CN114193055A - Multi-gun automatic welding device and welding system for prefabricated cement reinforcing steel bars - Google Patents

Abstract

The invention provides a multi-gun automatic welding device and a welding system for prefabricated cement steel bars, relates to the technical field of prefabricated cement plate steel bar welding in the field of buildings, and aims to solve the problems of low efficiency and large workload of the prefabricated cement plate steel bar welding in the prior art. The device comprises a welding vehicle body, a welding gun clamping mechanism, a cable clamping mechanism and a welding gun adjusting mechanism which are arranged on the welding vehicle body, wherein the welding gun clamping mechanism is connected with the welding gun adjusting mechanism, the welding gun adjusting mechanism comprises a three-dimensional motion mechanism and a fine adjustment mechanism, the three-dimensional motion mechanism is installed on the welding vehicle body, the fine adjustment mechanism is connected with the three-dimensional motion mechanism, the three-dimensional motion mechanism drives the fine adjustment mechanism and the welding gun clamping mechanism installed on the fine adjustment mechanism to move to a preset position, and then the position of the welding gun clamping mechanism is adjusted through manually adjusting a transverse sliding table lead screw or/and a vertical sliding table lead screw. Simple structure, practicality are strong, need not handheld welder operation, improve welding efficiency.

Description

Multi-gun automatic welding device and welding system for prefabricated cement reinforcing steel bars

Technical Field

The invention relates to the technical field of welding of prefabricated cement plate reinforcing steel bars in the field of buildings, in particular to a multi-gun automatic welding device for prefabricated cement reinforcing steel bars and a welding system thereof.

Background

The precast slab replaces a brick bed mould construction technology to be widely applied to building projects, and the practical effect is obvious. The prefabricated plates are connected through welding with steel bars of the bottom plate. At present, most of small and medium-sized enterprises complete the welding of precast slab steel bars by manual electric arc welding, and the welding machine has the advantages of low efficiency, high labor intensity, uneven welding and poor welding quality.

At present, most of domestic welding trolleys are of single-gun type and need to be paved with specific walking tracks. The welding trolley with the type has too low efficiency in the welding construction site of the prefabricated cement plate, the workload is greatly increased by laying the track, and the development of the novel welding trolley is particularly important.

Disclosure of Invention

In view of this, the present invention provides a multi-gun automatic welding device for precast concrete steel bars and a welding system thereof, so as to solve the technical problems of low welding efficiency and large workload for precast concrete steel bars in the prior art.

In order to achieve the purpose, the invention provides a multi-gun automatic welding device for prefabricated cement steel bars, which comprises a welding vehicle body, a cable clamping mechanism, a welding gun adjusting mechanism and a welding gun clamping mechanism, wherein the welding gun adjusting mechanism and the cable clamping mechanism are arranged on the welding vehicle body, the welding gun clamping mechanism is connected with the welding gun adjusting mechanism, the welding gun adjusting mechanism comprises a three-dimensional moving mechanism and a fine adjustment mechanism, the three-dimensional moving mechanism is arranged on the welding vehicle body, the fine adjustment mechanism is connected with the three-dimensional moving mechanism, the fine adjustment mechanism comprises a slide rail connecting block, a first slide table shell, a switching plate structure and a second slide table shell, the slide rail connecting block is arranged on the three-dimensional moving mechanism, the first slide table shell is arranged on the slide rail connecting block, and the first slide table shell is connected with the switching plate structure through a vertical slide table lead screw, the adapter plate structure is connected with the second sliding table shell through a transverse sliding table lead screw, and the welding gun clamping mechanism is detachably mounted on the second sliding table shell; the three-dimensional movement mechanism drives the fine adjustment mechanism and the welding gun clamping mechanism installed on the fine adjustment mechanism to move to a preset position, and the position of the welding gun clamping mechanism can be adjusted by adjusting the transverse sliding table lead screw or/and the vertical sliding table lead screw.

As a further improvement of the present invention, the three-dimensional movement mechanism includes an X-axis movement mechanism, a Y-axis movement mechanism and a Z-axis movement mechanism, the Y-axis movement mechanism is mounted on the welding vehicle body, the Z-axis movement mechanism is connected to the Y-axis movement mechanism, the X-axis movement mechanism is connected to the Z-axis movement mechanism, the Y-axis movement mechanism can drive the X-axis movement mechanism and the Z-axis movement mechanism to move along the Y-axis direction, the Y-axis direction is consistent with the length direction of the weld joint, the Z-axis movement mechanism can drive the X-axis movement mechanism to move up and down, the X-axis movement mechanism is connected to the fine adjustment mechanism, and the X-axis movement mechanism can drive the fine adjustment mechanism to move along the X-axis direction to adjust the position of the welding gun on the welding gun clamping mechanism.

As a further improvement of the invention, the Y-axis movement mechanism comprises a Y-axis driving motor, a first Y-axis base, a second Y-axis base, a Y-axis synchronous belt, a Y-axis sliding block and a Y-axis coupler, wherein the first Y-axis base and the second Y-axis base are respectively arranged on two opposite sides of the welding vehicle body, the Y-axis synchronous belt is arranged on the corresponding first Y-axis base and the second Y-axis base through a synchronous wheel, the Y-axis driving motor is connected with the synchronous wheel on the first Y-axis base and can drive the synchronous belt on the first Y-axis base to move through the synchronous wheel, the Y-axis coupler is arranged between the first Y-axis base and the second Y-axis base, one end of the Y-axis coupler is connected with the Y-axis driving motor through the synchronous wheel on the first Y-axis base, the other end of the Y-axis coupler is connected with the synchronous wheel on the second Y-axis base, the Y-axis sliding blocks are arranged on the corresponding Y-axis synchronous belts, the Y-axis synchronous belts can drive the Y-axis sliding blocks to reciprocate, Z-axis moving mechanisms are arranged on the Y-axis sliding blocks, and the Y-axis moving mechanisms can drive the Z-axis moving mechanisms to reciprocate along the Y-axis direction;

the Z-axis motion mechanism comprises a Z-axis driving motor, a first Z-axis base, a second Z-axis base, a Z-axis synchronous belt, a Z-axis sliding block and a Z-axis coupler, the first Z-axis base is arranged on the Y-axis sliding block on the first Y-axis base, the second Z-axis base is arranged on the Y-axis sliding block on the second Y-axis base, the Z-axis coupler is positioned between the first Z-axis base and the second Z-axis base, the Z-axis synchronous belt is arranged on the corresponding first Z-axis base and the second Z-axis base through a synchronous wheel, the Z-axis driving motor is arranged on one side of the first Z-axis base far away from the second Z-axis base and is connected with the synchronous wheel on the first Z-axis base so as to drive the Z-axis synchronous belt on the first Z-axis base to move, the Z-axis sliding block is arranged on the corresponding Z-axis synchronous belt, and the Z-axis synchronous belt can drive the Z-axis sliding block on the Z-axis synchronous belt to move in a reciprocating manner, one end of the Z-axis coupler is connected with the Z-axis driving motor through a synchronizing wheel on the first Z-axis base, the other end of the Z-axis coupler is connected with a synchronizing wheel on the second Z-axis base, Z-axis sliding blocks on the first Z-axis synchronous belt and the second Z-axis synchronous belt move synchronously, and two ends of the X-axis movement mechanism are respectively installed on a sliding block on the first Z-axis base and a Z-axis sliding block on the second Z-axis base;

x axle motion includes X axle base, X axle driving motor, lead screw nut base and X axle slider, X axle base includes two guide rails and middle ball, two parallel arrangement about the guide rail just installs on the Z axle slider, lead screw nut base with ball is connected and lead screw nut base slides on the guide rail through X axle slider between, X axle driving motor with ball is connected and can pass through ball drives lead screw nut base along the length direction reciprocating motion of guide rail, install on the lead screw nut base fine-tuning.

As a further improvement of the invention, the welding gun clamping mechanism comprises an installation part and a welding gun clamping part, wherein the upper part of the installation part is provided with a long slotted hole, and the installation part passes through the long slotted hole through a connecting piece to be detachably connected with the slide rail connecting block;

the welding gun clamping part is fixedly arranged on the lower portion of the installation portion and comprises a first welding gun supporting seat and a second welding gun supporting seat, the first welding gun supporting seat is fixed to the installation portion, the second welding gun supporting seat is detachably connected with the first welding gun supporting seat, and a clamping opening capable of containing a welding gun head is formed between the first welding gun supporting seat and the second welding gun supporting seat.

As a further improvement of the present invention, the cable clamping mechanism includes a support frame, a cable placing portion, and an opening and closing portion, the support frame is mounted on the welding vehicle body, and a plurality of cable placing portions for placing the welding gun cables are fixed on the support frame, one end of the opening and closing portion is disposed on the support frame through a hinge portion, the other end of the opening and closing portion can be connected to the support frame through a bolt, the opening and closing portion has an open state and a closed state, the opening and closing portion in the closed state can fix the welding gun cables in the corresponding cable placing portions, and the opening and closing portion in the open state can release the fixation of the welding gun cables;

as a further improvement of the invention, the support frame is integrally in an inverted U shape and comprises a vehicle body installation part and an intermediate connection part, the two vehicle body installation parts are fixed on the welded vehicle body, and the intermediate connection part is connected with the two vehicle body installation parts; the middle connecting part is provided with a plurality of cable placing parts, the cable placing parts are U-shaped and fixed on the middle connecting part through bolts, and welding gun cables are placed in the corresponding U-shaped grooves of the cable placing parts; the hinge portion comprises a first connecting portion and a second connecting portion, a cushion block is fixed on the upper surface of the middle connecting portion, the first connecting portion is fixed on the cushion block through bolts, the second connecting portion is fixedly connected with the opening and closing portion, two ends of the second connecting portion are rotatably connected with two ends of the first connecting portion, an opening and closing baffle is arranged in the middle of the second connecting portion, and the opening and closing portion can drive the second connecting portion and the opening and closing baffle on the second connecting portion to abut against the first connecting portion when turning towards the direction close to the first connecting portion so as to control the opening and closing angle of the opening and closing portion.

As a further improvement of the invention, the welding vehicle body comprises a vehicle frame, an armrest mechanism and moving wheels, wherein the armrest mechanism is arranged on the vehicle frame, and the moving wheels are arranged at the bottom of the vehicle frame; the frame is including the automobile body front bezel, the automobile body right side board, automobile body back plate and the automobile body left side board that connect gradually, the support frame passes through the bolt fastening on the automobile body right side board, first X axle base with second X axle base cross frame in the automobile body left side board with automobile body right side board top, handrail mechanism sets up the front end of frame just handrail mechanism fixes the automobile body left side board with on the automobile body right side board.

As a further improvement of the invention, the welding vehicle body further comprises a clamping mechanism, the clamping mechanism is arranged at the bottom of the vehicle frame, the clamping mechanism comprises a pushing cylinder, a push rod and a stop block, the pushing cylinder is fixedly arranged at the bottom of the vehicle frame through a connecting support, the push rod is connected with the pushing cylinder, the stop block is connected with the push rod, and the pushing cylinder can drive the stop block to reciprocate along the length direction of the steel bar to be welded between the two prefabricated cement plates through the push rod.

The multi-gun automatic welding system for the prefabricated cement steel bars comprises a loading vehicle body, a carrying vehicle body and the multi-gun automatic welding device for the prefabricated cement steel bars, wherein the loading vehicle body is connected with the carrying vehicle body, and the loading vehicle body can drag the carrying vehicle body to move;

the loading vehicle body comprises a loading vehicle frame and a moving wheel arranged at the bottom of the loading vehicle frame, a first placing frame used for placing a gas tank and a second placing frame used for placing a wire feeder and a welding power supply/electric welding machine are arranged on the loading vehicle frame, the first placing frame and the second placing frame are arranged side by side along the length direction of the loading vehicle body, a plurality of gas tank accommodating grooves used for placing the gas tank are formed in the first placing frame, a wire feeder supporting plate is arranged on the second placing frame, the wire feeder is installed on the wire feeder supporting plate, and an accommodating space used for placing the welding power supply/electric welding machine is arranged below the wire feeder supporting plate;

the carrying vehicle body comprises a carrying frame and travelling wheels arranged at the bottom of the carrying frame, and a carrying space for placing the welding vehicle body is formed on the carrying frame; the carrying frame comprises a bottom plate and three side plates connected with the bottom plate, the three side plates are a left side plate, a front side plate and a right side plate which are connected in sequence, first pressing mechanisms are arranged at two ends of the front side plate respectively, and second pressing mechanisms are arranged on the bottom plate.

As a further improvement of the present invention, the first pressing mechanism includes an extension plate connected to the front side plate, a rotating handle, a pressing bolt, and a pressing block, the pressing bolt is inserted into the extension plate, the rotating handle is connected to the upper end of the pressing bolt, the pressing block is fixed to the lower end of the pressing bolt, and the rotating handle can drive the pressing block to move downward through the pressing bolt to press the welding vehicle body, or the rotating handle can drive the pressing block to move upward through the pressing bolt to release the pressing state of the pressing block on the welding vehicle body;

the second pressing mechanism comprises a mounting seat, a hinged swing rod, a bolt handle and a slider structure, wherein a part of section of the bolt handle is arranged in the hinged swing rod, the slider structure is arranged on the periphery of the bolt handle positioned in the hinged swing rod, a sliding groove is formed in the inner wall of the hinged swing rod, a sliding part matched with the sliding groove is arranged on the slider structure, the hinged swing rod is rotatably connected with the mounting seat, a pressing plate is arranged on the bolt handle positioned outside the hinged swing rod, and the bolt handle can move downwards to be matched with a threaded hole in the hinged swing rod and abut against the welding vehicle body by rotating the bolt handle; or the bolt handle can be moved upwards by rotating the bolt handle so as to release the pressing state of the pressing plate on the welded vehicle body.

The invention provides a multi-gun automatic welding device for prefabricated cement steel bars, which comprises a welding vehicle body, a cable clamping mechanism, a welding gun adjusting mechanism and a welding gun clamping mechanism, wherein the welding gun adjusting mechanism and the cable clamping mechanism are arranged on the welding vehicle body; after the three-dimensional movement mechanism drives the fine adjustment mechanism and the welding gun clamping mechanism arranged on the fine adjustment mechanism to move to a preset position, the position of the welding gun clamping mechanism can be finely adjusted through manually adjusting a transverse sliding table lead screw or/and a vertical sliding table lead screw of the fine adjustment mechanism. Adopt multiple welder position control structure, the positional deviation who is applicable to prefabricated cement board upper reinforcing bar that can be better has simple structure, and the practicality is strong, and the flexibility ratio is high, and equipment input cost is low, easy operation's advantage. After the position of the welding gun is adjusted by the welding gun adjusting mechanism, the Y-axis moving mechanism of the three-dimensional moving mechanism can drive the welding gun to move along the length direction of a welding seam to be welded so as to weld the reinforcing steel bar between the two prefabricated cement plates, a manual welding mode is replaced, the welding efficiency is improved, and the labor intensity is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a first schematic structural diagram of a welding apparatus according to an embodiment of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a second schematic structural diagram of a welding device according to an embodiment of the present invention;

FIG. 4 is a third schematic view of a welding apparatus according to an embodiment of the present invention;

FIG. 5 is an enlarged view of portion B of FIG. 4;

FIG. 6 is a fourth schematic structural diagram of a welding device according to an embodiment of the present invention;

FIG. 7 is an enlarged view of portion C of FIG. 6;

FIG. 8 is a schematic structural diagram of a welding system provided by an embodiment of the present invention;

fig. 9 is an enlarged view of portion D of fig. 8;

FIG. 10 is a schematic structural view of a second clamping mechanism provided in accordance with an embodiment of the present invention (without the hinged swing link shown);

FIG. 11 is a schematic structural view of a cable clamping mechanism provided by an embodiment of the present invention;

FIG. 12 is a schematic structural view of a loaded vehicle body provided by an embodiment of the present invention;

FIG. 13 is a schematic diagram of a welding system according to an embodiment of the present invention.

Reference numerals: 1. welding the vehicle body; 11. a frame; 111. a vehicle body front panel; 112. a vehicle body right panel; 113. A vehicle body rear panel; 114. a left vehicle body panel; 12. an armrest mechanism; 13. a moving wheel; 2. a cable clamping mechanism; 21. a support frame; 22. a cable placement section; 23. an opening and closing part; 24. a hinge portion; 241. a first connection portion; 242. a second connecting portion; 25. a folding baffle plate; 3. a welding gun adjusting mechanism; 31. a three-dimensional motion mechanism; 311. An X-axis motion mechanism; 3111. a guide rail; 3112. an X-axis drive motor; 3113. a lead screw nut base; 3114. A middle ball screw; 312. a Y-axis motion mechanism; 3121. a Y-axis drive motor; 3122. a first Y-axis base; 3123. a second Y-axis base; 3124. a Y-axis synchronous belt; 3125. a Y-axis slider; 3126. a Y-axis coupler; 313. a Z-axis motion mechanism; 3131. a Z-axis drive motor; 3132. a first Z-axis base; 3133. A second Z-axis base; 3134. a Z-axis synchronous belt; 3135. a Z-axis slide block; 3136. a Z-axis coupler; 32. a fine adjustment mechanism; 321. a sliding rail connecting block; 322. a first slide table housing; 323. a second slide table housing; 324. a vertical sliding table lead screw; 325. a transverse sliding table lead screw; 4. a welding gun clamping mechanism; 41. an installation part; 411. A long slot hole; 42. a first welding gun support seat; 43. a second welding gun support seat; 5. a chucking mechanism; 51. a push cylinder; 52. a push rod; 53. a stopper; 6. carrying a vehicle body; 61. a first hold-down mechanism; 62. a second hold-down mechanism; 621. a mounting seat; 622. a swing rod is hinged; 623. a bolt handle; 624. a slider structure; 6241. A sliding part; 7. loading the vehicle body; 71. a first placing rack; 72. a second rack; 8. a gas tank; 9. a wire feeder; 10. a welding power supply/welder; 14. an electric appliance control box.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as appropriate to those of ordinary skill in the art.

Referring to fig. 1 to 7, the invention provides a multi-gun automatic welding device for prefabricated cement steel bars, which comprises a welding vehicle body 1, a cable clamping mechanism 2, a welding gun adjusting mechanism 3 and a welding gun clamping mechanism 4, wherein the welding gun adjusting mechanism 3 and the cable clamping mechanism 2 are both arranged on the welding vehicle body 1, and the welding gun clamping mechanism 4 is connected with the welding gun adjusting mechanism 3.

The welding gun adjusting mechanism 3 comprises a three-dimensional movement mechanism 31 and a fine adjustment mechanism 32, the three-dimensional movement mechanism 31 is installed on the welding vehicle body 1, the fine adjustment mechanism 32 is connected with the three-dimensional movement mechanism 31, the fine adjustment mechanism 32 comprises a sliding rail connecting block 321, a first sliding table shell 322, a changeover plate structure and a second sliding table shell 323, the sliding rail connecting block 321 is installed on the three-dimensional movement mechanism 31, the first sliding table shell 322 is arranged on the sliding rail connecting block 321, the first sliding table shell 322 is connected with the changeover plate structure through a vertical sliding table lead screw 324, the changeover plate structure is connected with the second sliding table shell 323 through a transverse sliding table lead screw 325, and the welding gun clamping mechanism 4 is detachably installed on the second sliding table shell 323; after the three-dimensional movement mechanism 31 drives the fine adjustment mechanism 32 and the welding gun clamping mechanism 4 mounted on the fine adjustment mechanism 32 to move to a preset position, the position of the welding gun clamping mechanism can be adjusted by adjusting the transverse sliding table lead screw 325 or/and the vertical sliding table lead screw 324.

The three-dimensional movement mechanism 31 comprises an X-axis movement mechanism 311, a Y-axis movement mechanism 312 and a Z-axis movement mechanism 313, the Y-axis movement mechanism 312 is installed on the welding vehicle body 1, the Z-axis movement mechanism 313 is connected with the Y-axis movement mechanism 312, the X-axis movement mechanism 311 is connected with the Z-axis movement mechanism 313, the Y-axis movement mechanism 312 can drive the X-axis movement mechanism 311 and the Z-axis movement mechanism 313 to move along the Y-axis direction, the Y-axis direction is consistent with the length direction of a welding seam, the Z-axis movement mechanism 313 can drive the X-axis movement mechanism 311 to move up and down, the X-axis movement mechanism 311 is connected with the fine adjustment mechanism 32, and the X-axis movement mechanism 311 can drive the fine adjustment mechanism 32 to move along the X-axis direction so as to adjust the position of a welding gun on the welding gun clamping mechanism 4.

After the three-dimensional movement mechanism 31 drives the fine adjustment mechanism 32 and the welding gun clamping mechanism 4 mounted on the fine adjustment mechanism 32 to move to the preset position, the welding gun clamping mechanism can be slightly adjusted by the fine adjustment mechanism 32 to enable the welding gun on the welding gun clamping mechanism to align to the position of the welding seam to be welded. The invention adopts a multiple welding gun position adjusting structure, can be better suitable for the position deviation of the upper-layer steel bar of the prefabricated cement plate, and has the advantages of simple structure, strong practicability, high flexibility, low equipment investment cost and simple operation.

After the position of the welding gun is adjusted by the welding gun adjusting mechanism 3, the Y-axis moving mechanism 312 of the three-dimensional moving mechanism 31 drives the welding gun to move along the length direction of the welding seam to be welded so as to weld the reinforcing steel bar between the two prefabricated cement plates, the manual welding mode is replaced, the welding efficiency is improved, and the labor intensity is reduced.

Specifically, the Y-axis moving mechanism 312 in this embodiment includes a Y-axis driving motor 3121, a first Y-axis base 3122, a second Y-axis base 3123, a Y-axis synchronous belt 3124, a Y-axis slider 3125, and a Y-axis coupler 3126, wherein two sides of the welding vehicle 1, which are oppositely disposed, are respectively provided with a first Y-axis base 3122 and a second Y-axis base 3123, the Y-axis synchronous belt 3124 is disposed on the corresponding first Y-axis base 3122 and second Y-axis base 3123 through a synchronous wheel, the Y-axis driving motor 3121 is connected to the synchronous wheel on the first Y-axis base 3122 and can drive the synchronous belt on the first Y-axis base 3122 to move through the synchronous wheel, the Y-axis coupler 3126 is disposed between the first Y-axis base 3122 and the second Y-axis base 3123, one end of the Y-axis coupler 3126 is connected to the Y-axis driving motor 3121 through the synchronous wheel on the first Y-axis base 3122, the other end is connected to the synchronous wheel on the second Y-axis base 3123, the Y-axis sliding block 3125 is arranged on the corresponding Y-axis synchronous belt 3124, the Y-axis synchronous belt 3124 can drive the Y-axis sliding block 3125 to reciprocate, the Z-axis moving mechanism 313 is installed on the Y-axis sliding block 3125, and the Y-axis moving mechanism 312 can drive the Z-axis moving mechanism 313 to reciprocate along the Y-axis direction.

The Z-axis moving mechanism 313 includes a Z-axis driving motor 3131, a first Z-axis base 3132, a second Z-axis base 3133, a Z-axis synchronous belt 3134, a Z-axis slider 3135, and a Z-axis coupler 3136, the first Z-axis base 3132 is installed on the Y-axis slider 3125 on the first Y-axis base 3122, the second Z-axis base 3133 is installed on the Y-axis slider 3125 on the second Y-axis base 3123, the Z-axis coupler 3136 is located between the first Z-axis base 3132 and the second Z-axis base 3133, the Z-axis synchronous belt 3134 is disposed on the corresponding first Z-axis base 3132 and second Z-axis base 3133 through a synchronous pulley, the Z-axis driving motor 3131 is disposed on the first Z-axis base 3132 at a side far from the second Z-axis base 3133 and connected to the synchronous pulley on the first Z-axis base 3132 and drives the Z-axis slider 3134 on the first Z-axis base 3132, the Z-axis slider 3134 is disposed on the Z-axis base 3135 and can move the synchronous belt 3135, one end of the Z-axis coupler 3136 is connected to a Z-axis driving motor 3131 through a synchronizing wheel on a first Z-axis base 3132, and the other end is connected to a synchronizing wheel on a second Z-axis base 3133, a Z-axis slider 3135 on a first Z-axis synchronizing belt 3134 and a second Z-axis synchronizing belt 3134 moves synchronously, and both ends of the X-axis moving mechanism 311 are respectively installed on a slider on the first Z-axis base 3132 and a Z-axis slider 3135 on the second Z-axis base 3133.

The X-axis moving mechanism 311 includes an X-axis base, an X-axis driving motor 3112, a screw nut base 3113 and an X-axis slider, the X-axis base includes two guide rails 3111 and a middle ball-screw 3114, the two guide rails 3111 are arranged in parallel up and down and are mounted on a Z-axis slider 3135, the screw nut base 3113 is connected to the middle ball-screw and the screw nut base 3113 slides on the guide rails 3111 through the X-axis slider, there are four screw nut bases 3113 in this embodiment, each screw nut base 3113 is mounted with a fine adjustment mechanism 32, that is, the welding apparatus in the embodiment shown in fig. 1 can allow four welding guns to weld simultaneously. The X-axis driving motor 3112 is connected to a ball screw and can drive the screw nut base 3113 to reciprocate along the length direction of the guide rail 3111 through the ball screw.

The slide rail connecting block 321 of the fine adjustment mechanism 32 is mounted on the lead screw nut base 3113 of the X-axis movement mechanism 311, the adapter plate structure comprises a first adapter plate and a second adapter plate, the first sliding table housing 322 is connected with the first adapter plate through a vertical sliding table lead screw 324, the first adapter plate is connected with the second adapter plate, and the vertical sliding table lead screw 324 rotates to drive the second sliding table housing 323 and the welding gun clamping mechanism 4 to move up and down through the adapter plate structure; the second adapter plate is connected with the second sliding table shell 323 through a transverse sliding table lead screw 325, and the transverse sliding table lead screw 325 can drive the second sliding table shell 323 and the welding gun clamping mechanism 4 to move along the horizontal direction through rotation.

In this embodiment, the three-dimensional movement mechanism 31 is used to make the welding gun head to be operated be located at the corresponding welding seam of the steel bar to be welded as much as possible, and if a small amount of welding gun head exists, the vertical sliding table screw rod 324 and the horizontal sliding table screw rod 325 in the fine adjustment mechanism 32 can be manually adjusted to make the welding gun just located at the welding seam of the steel bar.

The welding gun clamping mechanism 4 in the embodiment comprises an installation part 41 and a welding gun clamping part, wherein the upper part of the installation part 41 is provided with a long slotted hole 411, and the installation part 41 passes through the long slotted hole 411 through a connecting piece to form detachable connection with a slide rail connecting block 321; the position of the welding gun clamping part in the vertical direction can be adjusted through the arrangement of the long slotted hole 411, so that the longitudinal fine adjustment distance is supplemented. The fixed setting in the lower part of installation department 41 of welder clamping part, welder clamping part include first welder supporting seat 42 and second welder supporting seat 43, and first welder supporting seat 42 is fixed on installation department 41, and second welder supporting seat 43 can be dismantled with first welder supporting seat 42 and be connected and be formed with the rhombus's that can place the welder rifle head between first welder supporting seat 42 and the second welder supporting seat 43 the mouth that presss from both sides, the position of the fixed welder head that can more stabilize.

In order to effectively prevent the interference influence of a welding gun cable in the working and moving process of the welding gun, a cable clamping mechanism 2 is arranged on the welding vehicle body 1. As shown in fig. 11, the cable clamping mechanism 2 in this embodiment includes a support frame 21, a cable placing portion 22, and an opening and closing portion 23, the support frame 21 is mounted on the welding vehicle body 1, and a plurality of cable placing portions 22 for placing the welding gun cables are fixed on the support frame 21, one end of the opening and closing portion 23 is provided on the support frame 21 through a hinge portion 24, the other end of the opening and closing portion 23 can be connected to the support frame 21 through bolts, the opening and closing portion 23 has an open state and a closed state, the welding gun cables can be fixed in the corresponding cable placing portions 22 by the opening and closing portion 23 in the closed state, and the fixing of the welding gun cables can be released by the opening and closing portion 23 in the open state. The cable clamping mechanism 2 can well plan the routing path of the welding gun cable, and effectively solves the interference influence of the welding gun cable when a plurality of welding guns work.

Specifically, the support frame 21 is integrally in an inverted U shape, and includes vehicle body mounting portions 41 and an intermediate connecting portion, the two vehicle body mounting portions 41 are fixed on the welding vehicle body 1, and the intermediate connecting portion connects the two vehicle body mounting portions 41; the middle connecting part is provided with a plurality of cable placing parts 22, the cable placing parts 22 are U-shaped and fixed on the middle connecting part through bolts, and welding gun cables are placed in the U-shaped grooves of the corresponding cable placing parts 22; the hinge portion 24 includes a first connecting portion 241 and a second connecting portion 242, a cushion block is fixed on the upper surface of the middle connecting portion, the first connecting portion 241 is fixed on the cushion block through a bolt, the second connecting portion 242 is fixedly connected with the opening/closing portion 23, two ends of the second connecting portion 242 are rotatably connected with two ends of the first connecting portion 241, an opening/closing baffle 25 is disposed at the middle position of the second connecting portion 242, and the opening/closing portion 23 can drive the second connecting portion 242 and the opening/closing baffle 25 on the second connecting portion 242 to abut against the first connecting portion when turning towards the direction close to the first connecting portion 241 so as to control the opening/closing angle of the opening/closing portion 23.

The welding vehicle body 1 comprises a vehicle frame 11, an armrest mechanism 12 and a moving wheel 13, wherein the armrest mechanism 12 is arranged on the vehicle frame 11, and the moving wheel 13 is arranged at the bottom of the vehicle frame 11; the frame 11 includes the automobile body front bezel 111, the automobile body right side board 112, the automobile body back plate 113 and the automobile body left side board 114 that connect gradually, and the support frame 21 passes through the bolt fastening on the automobile body right side board 112, and first X axle base and second X axle base are violently put up in automobile body left side board 114 and automobile body right side board 112 top, and handrail mechanism 12 sets up at the front end of frame 11 and handrail mechanism 12 fixes on automobile body left side board 114 and automobile body right side board 112, can promote the welding automobile body 1 through promoting handrail mechanism 12 and remove.

In order to improve welding stability of welding automobile body 1, welding automobile body 1 in this embodiment still includes chucking mechanism 5, it is concrete, chucking mechanism 5 sets up in frame 11 bottom, chucking mechanism 5 is including promoting cylinder 51, push rod 52 and dog 53, promote cylinder 51 through linking bridge fixed mounting in the bottom of frame 11, push rod 52 is connected with promoting cylinder 51, dog 53 is connected with push rod 52, promoting cylinder 51 can drive dog 53 through push rod 52 and follow the reinforcing bar length direction reciprocating motion that treats welding between two prefabricated cement boards. As long as the welding car body 1 stops to weld, the side wall of the prefabricated cement board is propped through the clamping mechanism 5, so that the overall stability of the trolley is enhanced.

In addition, referring to fig. 8, the invention provides a multi-gun automatic welding system for precast concrete steel bars, which comprises a loading vehicle body 7, a carrying vehicle body 6 and the multi-gun automatic welding device for precast concrete steel bars, wherein the loading vehicle body 7 is connected with the carrying vehicle body 6, and the loading vehicle body 7 can drag the carrying vehicle body 6 to move.

The loading vehicle body 7 shown in fig. 12 includes a loading vehicle frame 11 and a moving wheel 13 disposed at the bottom of the loading vehicle frame 11, a first rack 71 for placing a gas tank 8 and a second rack 72 for placing a wire feeder 9 and a welding power supply/welding machine 10 are disposed on the loading vehicle frame 11, the first rack 71 and the second rack 72 are disposed side by side along the length direction of the loading vehicle body 7, a plurality of gas tank 8 accommodating grooves for placing the gas tank 8 are formed on the first rack 71, a wire feeder 9 supporting plate is disposed on the second rack 72, the wire feeder 9 is mounted on the wire feeder 9 supporting plate, and an accommodating space for placing the welding power supply/welding machine 10 is disposed below the wire feeder 9 supporting plate.

The carrying vehicle body 6 comprises a carrying frame 11 and travelling wheels arranged at the bottom of the carrying frame 11, and a carrying space for placing the welding vehicle body 1 is formed on the carrying frame 11; the carrying frame 11 comprises a bottom plate and three side plates connected with the bottom plate, the three side plates are a left side plate, a front side plate and a right side plate which are connected in sequence, two ends of the front side plate are respectively provided with a first pressing mechanism 61, and the bottom plate is provided with a second pressing mechanism 62.

An electrical control box 14 is further provided on the frame 11 of the welded vehicle body 1, and a control unit of the three-dimensional movement mechanism 31, a welding gun unit, and the like are provided in the electrical control box 14. The electric appliance control box 14 is installed on the rear panel 113 of the vehicle body and is close to the side of the Y-axis driving motor 3121 and the Z-axis driving motor 3131 of the three-dimensional movement mechanism 31, so that a long-distance power line can be reduced to ensure a neat and safe working environment.

First hold-down mechanism 61 includes the extension board of being connected with the preceding curb plate, twist grip, clamp bolt and briquetting, wears to be equipped with clamp bolt on the extension board, clamp bolt's upper end is connected with twist grip, clamp bolt's lower extreme is fixed with the briquetting, twist grip can drive the briquetting downstream through clamp bolt so that briquetting compression welding automobile body 1, perhaps twist grip can drive the briquetting upward movement through clamp bolt in order to relieve the compact state of briquetting to welding automobile body 1.

With reference to fig. 9 and 10, the second pressing mechanism 62 includes a mounting seat 621, a hinged swing rod 622, a bolt handle 623 and a slider structure 624, a partial section of the bolt handle 623 is disposed inside the hinged swing rod 622 and a slider structure 624 is disposed on the periphery of the bolt handle 623 located inside the hinged swing rod 622, a sliding slot is disposed on the inner wall of the hinged swing rod 622, a sliding portion 6241 matched with the sliding slot is disposed on the slider structure 624, the hinged swing rod 622 is rotatably connected with the mounting seat 621, a pressing plate is disposed on the bolt handle 623 located outside the hinged swing rod 622, and the bolt handle 623 can be rotated to move downward so as to be matched with a threaded hole inside the hinged swing rod 622 and abut against and weld the vehicle body 1; alternatively, turning the bolt handle 623 can move the bolt handle 623 upward to release the pressing state of the pressing plate to the welded vehicle body 1. The provision of the slider structure 624 also prevents the bolt handle 623 from sliding out of the hinged rocker 622 when moved upwardly. In addition, the hinged swing link 622 can rotate relative to the mounting seat 621, thereby facilitating the movement of the welded vehicle body 1 onto the loading vehicle body 6. In this embodiment, there are two first hold-down mechanism 61, a second hold-down mechanism 62, can be better fix welding automobile body 1 on carrying automobile body 6 through first hold-down mechanism 61 and second hold-down mechanism 62 to produce when rocking when passing through uneven road or bumping, cause welding automobile body 1's damage.

As shown in fig. 13, when the prefabricated cement panel reinforcing steel bar welding is performed, the driving wheels and the driven wheels of the welding vehicle body 1 are located on the vertical side walls of the adjacent prefabricated cement panels; the handrail mechanism 12 is pushed to move the welding vehicle body 1 to a working area, and the welding vehicle body 1 is fixed between two prefabricated cement plates through the pushing cylinder 51, so that the welding vehicle body 1 stably works and does not move in the front, back, left and right directions; before the steel bar welding, the welding gun head needing to work is positioned at the welding seam of the corresponding steel bar to be welded as much as possible through the three-dimensional movement mechanism 31, and if a small amount of welding gun head exists, the welding gun can be just positioned at the welding seam of the steel bar by adjusting the vertical sliding table lead screw 324 and the transverse sliding table lead screw 325 in the fine adjustment mechanism 32; then, driving a Y-axis driving motor 3121 to enable a Y-axis slider 3125 of the Y-axis movement mechanism 312 to drive the welding gun to move along the Y-axis direction, wherein the Y-axis direction in the embodiment is consistent with the length direction of the welding seam; after welding of a group of steel bars is finished, the push rod 52 is contracted by the push cylinder 51, and the whole welding system is moved to the next working interval until the last group of steel bars is welded; after the welding work of the prefabricated concrete slab steel bars is finished, the push rod 52 is controlled to contract, the welding vehicle body 1 is moved to the carrying vehicle body 6, and the welding vehicle body 1 is fixed through the first pressing mechanism 61 and the second pressing mechanism 62 on the carrying vehicle body 6; and starting the loading vehicle body 7, and moving the whole welding system to the next prefabricated cement board to be welded. It should be noted that if each set of steel bars to be welded is less than four pairs, the welding guns not participating in the steel bar welding work can be flexibly controlled to be shut down.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A multi-gun automatic welding device for prefabricated cement steel bars is characterized by comprising a welding vehicle body, a cable clamping mechanism, a welding gun adjusting mechanism and a welding gun clamping mechanism, wherein the welding gun adjusting mechanism and the cable clamping mechanism are arranged on the welding vehicle body, the welding gun clamping mechanism is connected with the welding gun adjusting mechanism,

the welding gun adjusting mechanism comprises a three-dimensional movement mechanism and a fine adjustment mechanism, the three-dimensional movement mechanism is installed on the welding vehicle body, the fine adjustment mechanism is connected with the three-dimensional movement mechanism, the fine adjustment mechanism comprises a slide rail connecting block, a first sliding table shell, a changeover plate structure and a second sliding table shell, the slide rail connecting block is installed on the three-dimensional movement mechanism, the first sliding table shell is arranged on the slide rail connecting block, the first sliding table shell is connected with the changeover plate structure through a vertical sliding table screw rod, the changeover plate structure is connected with the second sliding table shell through a transverse sliding table screw rod, and the welding gun clamping mechanism is detachably installed on the second sliding table shell; the three-dimensional movement mechanism drives the fine adjustment mechanism and the welding gun clamping mechanism installed on the fine adjustment mechanism to move to a preset position, and the position of the welding gun clamping mechanism can be adjusted by adjusting the transverse sliding table lead screw or/and the vertical sliding table lead screw.

2. The multi-gun automatic welding device for precast cement rebars according to claim 1, the three-dimensional motion mechanism comprises an X-axis motion mechanism, a Y-axis motion mechanism and a Z-axis motion mechanism, the Y-axis motion mechanism is arranged on the welding vehicle body, the Z-axis motion mechanism is connected with the Y-axis motion mechanism, the X-axis motion mechanism is connected with the Z-axis motion mechanism, the Y-axis motion mechanism can drive the X-axis motion mechanism and the Z-axis motion mechanism to move along the Y-axis direction, the Y-axis direction is consistent with the length direction of the welding seam, the Z-axis motion mechanism can drive the X-axis motion mechanism to move up and down, the X-axis motion mechanism is connected with the fine adjustment mechanism and can drive the fine adjustment mechanism to move along the X-axis direction so as to adjust the position of the welding gun on the welding gun clamping mechanism.

3. The automatic multi-gun welding device for precast cement steel bars according to claim 2, wherein the Y-axis movement mechanism comprises a Y-axis driving motor, a first Y-axis base, a second Y-axis base, a Y-axis synchronous belt, a Y-axis slider and a Y-axis coupler, the first Y-axis base and the second Y-axis base are respectively arranged on two opposite sides of the welding carriage body, the Y-axis synchronous belt is arranged on the corresponding first Y-axis base and the second Y-axis base through a synchronous wheel, the Y-axis driving motor is connected with the synchronous wheel on the first Y-axis base and can drive the synchronous belt on the first Y-axis base to move through the synchronous wheel, the Y-axis coupler is arranged between the first Y-axis base and the second Y-axis base, one end of the Y-axis coupler is connected with the Y-axis driving motor through the synchronous wheel on the first Y-axis base, the other end of the Y-axis sliding block is connected with a synchronizing wheel on the second Y-axis base, the Y-axis sliding block is arranged on the corresponding Y-axis synchronizing belt and can drive the Y-axis sliding block to reciprocate, a Z-axis motion mechanism is arranged on the Y-axis sliding block and can drive the Z-axis motion mechanism to reciprocate along the Y-axis direction;

the Z-axis motion mechanism comprises a Z-axis driving motor, a first Z-axis base, a second Z-axis base, a Z-axis synchronous belt, a Z-axis sliding block and a Z-axis coupler, the first Z-axis base is arranged on the Y-axis sliding block on the first Y-axis base, the second Z-axis base is arranged on the Y-axis sliding block on the second Y-axis base, the Z-axis coupler is positioned between the first Z-axis base and the second Z-axis base, the Z-axis synchronous belt is arranged on the corresponding first Z-axis base and the second Z-axis base through a synchronous wheel, the Z-axis driving motor is arranged on one side of the first Z-axis base far away from the second Z-axis base and is connected with the synchronous wheel on the first Z-axis base so as to drive the Z-axis synchronous belt on the first Z-axis base to move, the Z-axis sliding block is arranged on the corresponding Z-axis synchronous belt, and the Z-axis synchronous belt can drive the Z-axis sliding block on the Z-axis synchronous belt to move in a reciprocating manner, one end of the Z-axis coupler is connected with the Z-axis driving motor through a synchronizing wheel on the first Z-axis base, the other end of the Z-axis coupler is connected with a synchronizing wheel on the second Z-axis base, Z-axis sliding blocks on the first Z-axis synchronous belt and the second Z-axis synchronous belt move synchronously, and two ends of the X-axis movement mechanism are respectively installed on a sliding block on the first Z-axis base and a Z-axis sliding block on the second Z-axis base;

x axle motion includes X axle base, X axle driving motor, lead screw nut base and X axle slider, X axle base includes two guide rails and middle ball, two parallel arrangement about the guide rail just installs on the Z axle slider, lead screw nut base with ball is connected just between lead screw nut base passes through X axle slider and slides on the guide rail, X axle driving motor with ball is connected and can pass through ball drives lead screw nut base along the length direction reciprocating motion of guide rail, install on the lead screw nut base fine-tuning.

4. The multi-gun automatic welding device for the precast cement reinforcing steel bars as claimed in claim 1, wherein the welding gun clamping mechanism comprises an installation part and a welding gun clamping part, a long slotted hole is formed in the upper part of the installation part, and the installation part passes through the long slotted hole through a connecting piece to be detachably connected with the slide rail connecting block;

the welding gun clamping part is fixedly arranged on the lower portion of the installation portion and comprises a first welding gun supporting seat and a second welding gun supporting seat, the first welding gun supporting seat is fixed to the installation portion, the second welding gun supporting seat is detachably connected with the first welding gun supporting seat, and a clamping opening capable of containing a welding gun head is formed between the first welding gun supporting seat and the second welding gun supporting seat.

5. The multi-gun automatic welding device for the precast cement steel bars according to claim 1, wherein the cable clamping mechanism comprises a support frame, a cable placing part and an opening and closing part, the support frame is installed on the welding vehicle body, a plurality of cable placing parts for placing the welding gun cables are fixed on the support frame, one end of each opening and closing part is arranged on the support frame through a hinge part, the other end of each opening and closing part can be connected with the support frame through a bolt, the opening and closing parts are in an opening and closing state, the welding gun cables can be fixed in the corresponding cable placing parts through the opening and closing parts in the opening and closing state, and the fixing of the welding gun cables can be released through the opening and closing parts in the opening state.

6. The multi-gun automatic welding device for the precast cement reinforcing steel bars as claimed in claim 5, wherein the support frame is integrally in an inverted U shape and comprises vehicle body installation parts and a middle connecting part, the two vehicle body installation parts are fixed on the welding vehicle body, and the middle connecting part is connected with the two vehicle body installation parts;

the middle connecting part is provided with a plurality of cable placing parts, the cable placing parts are U-shaped and fixed on the middle connecting part through bolts, and welding gun cables are placed in the corresponding U-shaped grooves of the cable placing parts;

the hinge portion comprises a first connecting portion and a second connecting portion, a cushion block is fixed on the upper surface of the middle connecting portion, the first connecting portion is fixed on the cushion block through bolts, the second connecting portion is fixedly connected with the opening and closing portion, two ends of the second connecting portion are rotatably connected with two ends of the first connecting portion, an opening and closing baffle is arranged in the middle of the second connecting portion, and the opening and closing portion can drive the second connecting portion and the opening and closing baffle on the second connecting portion to abut against the first connecting portion when turning towards the direction close to the first connecting portion so as to control the opening and closing angle of the opening and closing portion.

7. The multi-gun automatic welding device for precast cement steel bars according to claim 3, wherein the welding vehicle body comprises a vehicle frame, an armrest mechanism and a moving wheel, the armrest mechanism is arranged on the vehicle frame, and the moving wheel is arranged at the bottom of the vehicle frame;

the frame is including the automobile body front bezel, the automobile body right side board, automobile body back plate and the automobile body left side board that connect gradually, the support frame passes through the bolt fastening on the automobile body right side board, first X axle base with second X axle base cross frame in the automobile body left side board with automobile body right side board top, handrail mechanism sets up the front end of frame just handrail mechanism fixes the automobile body left side board with on the automobile body right side board.

8. The multi-gun automatic welding device for precast cement steel bars according to claim 7, characterized in that the welding vehicle body further comprises a clamping mechanism, the clamping mechanism is arranged at the bottom of the vehicle frame, the clamping mechanism comprises a pushing cylinder, a push rod and a stop block, the pushing cylinder is fixedly installed at the bottom of the vehicle frame through a connecting support, the push rod is connected with the pushing cylinder, the stop block is connected with the push rod, and the pushing cylinder can drive the stop block to reciprocate along the length direction of the steel bar to be welded between the two precast cement plates through the push rod.

9. The multi-gun automatic welding system for the prefabricated cement steel bars is characterized by comprising a loading vehicle body, a carrying vehicle body and the multi-gun automatic welding device for the prefabricated cement steel bars as claimed in any one of claims 1 to 8, wherein the loading vehicle body is connected with the carrying vehicle body, and the loading vehicle body can drag the carrying vehicle body to move;

the loading vehicle body comprises a loading vehicle frame and a moving wheel arranged at the bottom of the loading vehicle frame, a first placing frame used for placing a gas tank and a second placing frame used for placing a wire feeder and a welding power supply/electric welding machine are arranged on the loading vehicle frame, the first placing frame and the second placing frame are arranged side by side along the length direction of the loading vehicle body, a plurality of gas tank accommodating grooves used for placing the gas tank are formed in the first placing frame, a wire feeder supporting plate is arranged on the second placing frame, the wire feeder is installed on the wire feeder supporting plate, and an accommodating space used for placing the welding power supply/electric welding machine is arranged below the wire feeder supporting plate;

the carrying vehicle body comprises a carrying frame and travelling wheels arranged at the bottom of the carrying frame, and a carrying space for placing the welding vehicle body is formed on the carrying frame; the carrying frame comprises a bottom plate and three side plates connected with the bottom plate, the three side plates are a left side plate, a front side plate and a right side plate which are connected in sequence, first pressing mechanisms are arranged at two ends of the front side plate respectively, and second pressing mechanisms are arranged on the bottom plate.

10. The system for multi-gun automatic welding of precast cement rebars according to claim 9, wherein the first pressing mechanism comprises an extension plate connected with a front side plate, a rotating handle, a pressing bolt and a pressing block, the pressing bolt penetrates through the extension plate, the rotating handle is connected to the upper end of the pressing bolt, the pressing block is fixed to the lower end of the pressing bolt, and the pressing block can be driven to move downwards by rotating the rotating handle through the pressing bolt so as to press the pressing block against the welding vehicle body, or the pressing block can be driven to move upwards by rotating the rotating handle through the pressing bolt so as to relieve the pressing state of the pressing block against the welding vehicle body;

the second pressing mechanism comprises a mounting seat, a hinged swing rod, a bolt handle and a slider structure, wherein a part of section of the bolt handle is arranged in the hinged swing rod, the slider structure is arranged on the periphery of the bolt handle positioned in the hinged swing rod, a sliding groove is formed in the inner wall of the hinged swing rod, a sliding part matched with the sliding groove is arranged on the slider structure, the hinged swing rod is rotatably connected with the mounting seat, a pressing plate is arranged on the bolt handle positioned outside the hinged swing rod, and the bolt handle can move downwards to be matched with a threaded hole in the hinged swing rod and abut against the welding vehicle body by rotating the bolt handle; or the bolt handle can be moved upwards by rotating the bolt handle so as to release the pressing state of the pressing plate on the welded vehicle body.

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