CN116621030A - Anti-shaking lifting device for steel structure bridge construction - Google Patents
Anti-shaking lifting device for steel structure bridge construction Download PDFInfo
- Publication number
- CN116621030A CN116621030A CN202310621176.8A CN202310621176A CN116621030A CN 116621030 A CN116621030 A CN 116621030A CN 202310621176 A CN202310621176 A CN 202310621176A CN 116621030 A CN116621030 A CN 116621030A
- Authority
- CN
- China
- Prior art keywords
- lifting
- plate
- hinged
- shaking
- fixed plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 60
- 239000010959 steel Substances 0.000 title claims abstract description 60
- 238000010276 construction Methods 0.000 title claims abstract description 31
- 239000000725 suspension Substances 0.000 claims abstract description 26
- 230000000712 assembly Effects 0.000 claims abstract description 11
- 238000000429 assembly Methods 0.000 claims abstract description 11
- 230000035939 shock Effects 0.000 claims description 23
- 238000012544 monitoring process Methods 0.000 claims description 10
- 230000005540 biological transmission Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000010521 absorption reaction Methods 0.000 claims 10
- 230000033001 locomotion Effects 0.000 abstract description 7
- 238000013016 damping Methods 0.000 description 19
- 230000009286 beneficial effect Effects 0.000 description 10
- 230000001105 regulatory effect Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 239000006096 absorbing agent Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/06—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for minimising or preventing longitudinal or transverse swinging of loads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
- B66C13/085—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions electrical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/26—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D21/00—Methods or apparatus specially adapted for erecting or assembling bridges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Transportation (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides an anti-shaking lifting device for steel structure bridge construction, which relates to the field of lifting equipment and comprises a workbench, wherein a winch and a suspension arm are arranged on the workbench, a lifting rope is wound on the winch, one end of the lifting rope, which is far away from the winch, bypasses the upper end of the suspension arm and is provided with a lifting seat, the lower end of the lifting seat is provided with a lifting hook, a fixed plate is arranged above the lifting seat and is fixedly connected with the lifting rope, a hinged plate is arranged above the fixed plate, one end of the hinged plate is hinged with the suspension arm, a plurality of guide assemblies are arranged between the hinged plate and the fixed plate, a sliding hole is formed in the center of the hinged plate, the lifting rope penetrates through the sliding hole and is in sliding connection with the inner wall of the sliding hole, a sliding block is arranged on the upper surface of the hinged plate in a sliding manner, and an electric push rod is arranged between the sliding block and the suspension arm. According to the invention, the guide assembly can provide guide for the up-and-down movement of the fixed plate, so that the lifting rope can vertically move up and down, the lifting rope between the hinged plate and the fixed plate is prevented from shaking greatly, the stability of lifting the box girder is improved, and the construction risk is reduced.
Description
Technical Field
The invention relates to the technical field of hoisting equipment, in particular to an anti-shaking hoisting device for steel structure bridge construction.
Background
The construction of bridge is usually formed through the concatenation of a plurality of prefabricated steel case roof beams, needs to hoist the prefabricated steel case roof beam to the construction point through lifting device in the work progress, and in the hoist and mount operation in-process, the accurate location of steel case roof beam directly relates to bridge erection quality. Aiming at an ultra-wide ultra-high large-section steel box girder, when a multi-point hoisting rope is hoisted, the section box girder can swing back and forth or swing left and right or shake left and right due to factors such as high cross wind and the like, the problem of unstable hoisting of the box girder occurs, and the factors such as high cross wind, multi-layer overpass bridge collision, high altitude attitude difficult control, high hoisting mechanical stability and the like are combined for installation, so that the installation operation is inconvenient and the hoisting construction risk is increased.
The invention discloses a complex environment steel box girder hoisting device with an authorized bulletin number of CN111824928B, which comprises: the lower beam body is provided with four hoisting points; an upper beam body positioned above the lower beam body; the upper beam body is provided with four connecting columns, and the lower end of any connecting column penetrates through the lower beam body and is provided with the bottom of the distributing beam mechanism to be connected with the steel box beam to be hoisted; the rotating shaft is positioned between the upper beam body and the lower beam body and is used for rotationally connecting the middle parts of the upper beam body and the lower beam body; and the three telescopic rods are positioned between the upper beam body and the lower beam body, and two ends of any telescopic rod are respectively connected with the upper beam body and the lower beam body. According to the invention, the transition piece of the upper beam body and the lower beam body is arranged between the steel wire rope connected with the crane and the steel box beam to be hoisted, so that the shaking amplitude of the steel box beam caused by other external forces (such as wind power) in a complex environment is greatly reduced, the probability of construction accidents caused by shaking of the steel box beam in the hoisting process is greatly reduced, and the completeness of construction is improved.
However, the hoisting equipment is only provided with the transition piece of the upper beam body and the lower beam body between the steel wire rope and the steel box beam to be hoisted, the connection part of the steel wire rope and the hoisting machine can shake greatly under the action of external force, the problem of unstable box beam hoisting is caused, and the hoisting equipment still has larger construction risk.
Disclosure of Invention
The invention provides an anti-shaking lifting device for steel structure bridge construction, which is used for solving the technical problem that the box girder lifting is unstable because the connecting part of a steel wire rope and a lifting machine can shake greatly under the action of external force at present.
In order to solve the technical problems, the invention discloses an anti-shaking lifting device for steel structure bridge construction, which comprises: the lifting device comprises a workbench, wherein a winch and a suspension arm are arranged on the workbench, a lifting rope is wound on the winch, one end of the lifting rope, far away from the winch, bypasses the upper end of the suspension arm and is provided with a lifting seat, the lower end of the lifting seat is provided with a lifting hook, a fixed plate is arranged above the lifting seat and is fixedly connected with the lifting rope, a hinged plate is arranged above the fixed plate, one end of the hinged plate is hinged with the suspension arm, a plurality of guide assemblies are arranged between the hinged plate and the fixed plate, a sliding hole is formed in the center of the hinged plate, the lifting rope penetrates through the sliding hole and is in sliding connection with the inner wall of the sliding hole, a sliding block is arranged on the upper surface of the hinged plate in a sliding mode, and an electric push rod is arranged between the sliding block and the suspension arm.
Preferably, the plurality of guide assemblies are distributed in an annular array about the vertical section centerline of the hoist rope.
Preferably, the guiding component comprises a plurality of sleeves, the sleeves are sequentially sleeved from top to bottom to form a telescopic structure, the diameters of the sleeves are sequentially reduced from top to bottom, the outer wall of the lower end of each sleeve is provided with a chamfer, the inner wall of each sleeve is provided with an annular sliding groove, the outer wall of each sleeve, which is close to one end of each hinged plate, is provided with an annular sliding block, the annular sliding blocks are in sliding connection with the annular sliding grooves of the inner walls of the adjacent sleeves up and down, the upper ends of the sleeves, which are close to the hinged plates, are fixedly connected with the lower surface of each hinged plate, and the lower ends of the sleeves, which are close to the fixing plates, are fixedly connected with the upper surface of the fixing plates.
Preferably, the lifting hook is provided with a plurality of steel wire ropes which are matched with lifting lugs on the upper surface of the steel box girder.
Preferably, the controller is respectively and electrically connected with the electronic level meter and the electric push rod, the controller can receive the monitoring result of the electronic level meter, and the controller controls the electric push rod to work based on the monitoring result of the electronic level meter.
Preferably, two electric push rods are arranged, the two electric push rods are symmetrically arranged on the front side and the rear side of the lifting rope, one end of each electric push rod is hinged with the upper surface of the sliding block, and the other end of each electric push rod is hinged with the side wall of the lifting arm.
Preferably, a screw is arranged between the fixed plate and the hanging seat, a through hole is arranged in the center of the screw, the screw is sleeved outside the hanging rope, one end of the screw is rotationally connected with the bottom wall of the fixed plate, and the other end of the screw is rotationally connected with the upper surface of the hanging seat.
Preferably, the fixed plate bottom sets up prevents rocking the subassembly, prevent rocking the subassembly and include driving motor, driving motor and fixed plate lower surface fixed connection, driving motor output sets up first gear, the screw outer wall sets gradually second gear and movable block from last down, second gear and screw outer wall fixed connection, the movable block center sets up the screw hole, the movable block passes through the screw hole and is connected with the external screw thread transmission of screw outer wall, the movable block outer wall sets up solid fixed ring, gu fixed ring and movable block set up with one heart, gu fixed ring inner wall and movable block outer wall fixed connection, the fixed plate bottom surface sets up a plurality of regulating plates, regulating plate one end is articulated with the fixed plate bottom to be connected, the regulating plate is kept away from fixed plate one end cross-section and is semi-circular, a plurality of regulating plates are annular array distribution about the perpendicular section central line of lifting rope, set up the connecting rod between regulating plate and the movable block, connecting rod one end is articulated with the regulating plate inside wall and is connected, the connecting rod other end is articulated with the solid fixed ring outer wall.
Preferably, the lifting rope is provided with a balancing weight, the balancing weight is positioned between the hinged plate and the fixed plate, and the center of the balancing weight is fixedly connected with the outer wall of the lifting rope.
Preferably, still include damper, damper includes a plurality of telescopic links, a plurality of telescopic links and a plurality of direction subassembly one-to-one, telescopic link one end is connected with the configuration piece, the telescopic link other end is connected with the damping ring, the damping ring cover is established outside the sleeve pipe, the damping ring inner wall sets up a plurality of fixed pipes, set up damping spring in the fixed pipe, damping spring one end and damping ring inner wall fixed connection, the damping spring other end sets up the contact lever, contact lever and fixed pipe inner wall sliding connection, damping spring one end is kept away from to the contact lever extends to the fixed pipe outside and sets up the pulley, pulley and sleeve pipe outer wall butt.
The technical scheme of the invention has the following advantages: the invention provides an anti-shaking lifting device for steel structure bridge construction, which relates to the technical field of batteries and comprises a workbench, wherein a winch and a suspension arm are arranged on the workbench, a lifting rope is wound on the winch, one end of the lifting rope, which is far away from the winch, bypasses the upper end of the suspension arm and is provided with a lifting seat, the lower end of the lifting seat is provided with a lifting hook, a fixed plate is arranged above the lifting seat and is fixedly connected with the lifting rope, a hinged plate is arranged above the fixed plate, one end of the hinged plate is hinged with the suspension arm, a plurality of guide assemblies are arranged between the hinged plate and the fixed plate, a sliding hole is formed in the center of the hinged plate, the lifting rope penetrates through the sliding hole and is in sliding connection with the inner wall of the sliding hole, a sliding block is arranged on the upper surface of the hinged plate in a sliding manner, and an electric push rod is arranged between the sliding block and the suspension arm. According to the invention, the guide assembly can provide guide for the up-and-down movement of the fixed plate, so that the lifting rope can move vertically up and down, on one hand, the lifting rope between the hinged plate and the fixed plate cannot shake greatly, on the other hand, the influence on the lifting rope below the fixed plate is reduced, the lifting stability of the box girder is improved, the box girder is convenient to install, and the construction risk is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objects and other advantages of the invention may be realized and attained by means of the instrumentalities particularly pointed out in the written description and the appended drawings.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a schematic diagram of the whole structure of an anti-shaking hoisting device for steel structure bridge construction;
FIG. 2 is an enlarged view of the structure of FIG. 1A according to the present invention;
FIG. 3 is a schematic view of an anti-shake assembly according to the present invention;
FIG. 4 is an enlarged view of the structure of FIG. 3B in accordance with the present invention;
FIG. 5 is a schematic view of a shock absorbing assembly according to the present invention;
fig. 6 is an enlarged view of the structure of fig. 5 at C in accordance with the present invention.
In the figure: 1. a work table; 2. a hoist; 3. a suspension arm; 4. a hanging rope; 5. a hanging seat; 6. a lifting hook; 7. a fixing plate; 8. a hinged plate; 9. a guide assembly; 901. a sleeve; 902. an annular chute; 903. an annular slide block; 10. a sliding hole; 11. a slide block; 12. an electric push rod; 13. a steel box girder; 14. lifting lugs; 15. a wire rope; 16. a screw; 17. a through hole; 18. an anti-sloshing assembly; 1801. a driving motor; 1802. a first gear; 1803. a second gear; 1804. a moving block; 1805. a fixing ring; 1806. an adjusting plate; 1807. a connecting rod; 19. balancing weight; 20. a shock absorbing assembly; 2001. a telescopic rod; 2002. a shock-absorbing ring; 2003. a fixed tube; 2004. a damping spring; 2005. a contact lever; 2006. and (3) a pulley.
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
In addition, the descriptions of the "first," "second," and the like, herein are for descriptive purposes only and are not intended to be specifically construed as order or sequence, nor are they intended to limit the invention solely for distinguishing between components or operations described in the same technical term, but are not to be construed as indicating or implying any relative importance or order of such features. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, technical solutions and technical features between the embodiments may be combined with each other, but it is necessary to base that a person skilled in the art can implement the combination of technical solutions, when the combination of technical solutions contradicts or cannot be implemented, should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present invention.
Example 1
The embodiment of the invention provides an anti-shaking lifting device for steel structure bridge construction, which is shown in fig. 1-6 and comprises: the lifting device comprises a workbench 1, wherein a winch 2 and a suspension arm 3 are arranged on the workbench 1, a lifting rope 4 is wound on the winch 2, one end of the lifting rope 4, far away from the winch 2, bypasses the upper end of the suspension arm 3 and is provided with a lifting seat 5, the lower end of the lifting seat 5 is provided with a lifting hook 6, a fixed plate 7 is arranged above the lifting seat 5, the fixed plate 7 is fixedly connected with the lifting rope 4, a hinged plate 8 is arranged above the fixed plate 7, one end of the hinged plate 8 is hinged with the suspension arm 3, a plurality of guide assemblies 9 are arranged between the hinged plate 8 and the fixed plate 7, a sliding hole 10 is formed in the center of the hinged plate 8, the lifting rope 4 penetrates through the sliding hole 10 and is in sliding connection with the inner wall of the sliding hole 10, a sliding block 11 is arranged on the upper surface of the hinged plate 8, and an electric push rod 12 is arranged between the sliding block 11 and the suspension arm 3.
The working principle and the beneficial effects of the technical scheme are as follows: the hoisting device comprises a workbench 1, a hoisting machine 2 is arranged on the workbench 1, a hoisting rope 4 is arranged on the hoisting machine 2, one end of the hoisting rope 4 is fixedly connected with the hoisting machine 2, the other end of the hoisting rope 4 sequentially bypasses the hoisting machine 2 and bypasses a guide wheel at the upper end of a suspension arm 3 and naturally sags under the action of gravity, a hoisting seat 5 is arranged at the lower end of a vertical section of the hoisting rope 4, a lifting hook 6 is arranged at the lower end of the hoisting seat 5, the lifting hook 6 is used for hoisting a steel box girder 13, a fixing plate 7 is fixedly arranged at one end of the hoisting rope 4 close to the hoisting seat 5, the fixing plate 7 is horizontally arranged, a hinged plate 8 is arranged above the fixing plate 7, one end of the hinged plate 8 is hinged with the side wall of the suspension arm 3, a sliding hole 10 is arranged in the center of the hinged plate 8, the hoisting rope 4 can slide left and right in the sliding hole 10 through adjusting the included angle between the suspension arm 3 and the workbench 1, a sliding block 11 is arranged on the hoisting rope 8 in a sliding manner, an electric push rod 12 is arranged between the sliding block 11 and the suspension arm 3, the included angle between the hinged plate 8 and the suspension arm 3 can be regulated through the pushing and retracting of the electric push rod 12, the hinged plate 8 is ensured to be always kept in a horizontal state, thereby ensuring that the fixed plate 7 is also ensured to be always kept in a horizontal state, when the fixed plate 7 and the hinged plate 8 are connected through a plurality of guide components 9, the hoist 2 starts to drive the lifting rope 4 to wind on the hoist 2, the lifting rope 4 pulls the fixed plate 7, the lifting seat 5 and the lifting hook 6 to move upwards, the fixed plate 7 moves along the vertical line 8 under the action of the guide components 9, when external acting force acts on the lifting rope 4 above the fixed plate 7, the movement of the fixed plate 7 is not influenced, thereby ensuring that the lifting rope 4 below the fixed plate 7 does not shake greatly, meanwhile, the lifting rope 4 positioned in the sliding hole 10 also correspondingly reduces the shaking amplitude under the limiting action of the sliding hole 10, make fixed plate 7, hanger bracket 5 and lifting hook 6 stable upward movement, realized the reliable hoist and mount of steel case roof beam 13, can provide the direction for the reciprocates of fixed plate 7 through guide assembly 9 to guarantee that lifting rope 4 can vertical up-and-down motion, lifting rope 4 between hinged plate 8 and the fixed plate 7 can not take place to rock by a wide margin on the one hand, on the other hand has also reduced the influence to lifting rope 4 of fixed plate 7 below, has improved the stability of case roof beam hoist and mount, the installation of the case roof beam of being convenient for, has reduced the construction risk.
Example 2
On the basis of the embodiment 1, as shown in fig. 1, a plurality of guide assemblies 9 are distributed in an annular array with respect to the center line of the vertical section of the hoist rope 4.
The working principle and the beneficial effects of the technical scheme are as follows: the guide components 9 are arranged in a plurality of groups, and the guide components 9 are distributed in an annular array with respect to the center line of the vertical section of the lifting rope 4, so that the force born by the guide components 9 is uniform, the stability of the up-and-down movement of the fixed plate 7 is further improved, and the shaking amplitude of the lifting rope 4 and the lifting hook 6 below the fixed plate 7 is reduced.
Example 3
On the basis of embodiment 1 or 2, as shown in fig. 1 and 2, the guiding component 9 comprises a plurality of sleeves 901, the sleeves 901 are sequentially sleeved to form a telescopic structure from top to bottom, the diameters of the sleeves 901 are sequentially reduced from top to bottom, the outer walls of the lower ends of the sleeves 901 are provided with chamfers, the inner walls of the sleeves 901 are all provided with annular sliding grooves 902, the outer walls of the sleeves 901 close to one end of a hinged plate 8 are provided with annular sliding blocks 903, the annular sliding blocks 903 are in sliding connection with the annular sliding grooves 902 of the inner walls of the adjacent sleeves 901 up and down, the upper ends of the sleeves 901 close to the hinged plate 8 are fixedly connected with the lower surface of the hinged plate 8, and the lower ends of the sleeves 901 close to a fixed plate 7 are fixedly connected with the upper surface of the fixed plate 7.
The working principle and the beneficial effects of the technical scheme are as follows: the guide component 9 comprises a plurality of sleeves 901, a plurality of sleeves 901 are sequentially sleeved, the diameter of the sleeve 901 close to the hinged plate 8 is larger than that of the sleeve 901 far away from the hinged plate 8, two adjacent sleeves 901 are connected in a sliding mode up and down, annular sliding grooves 902 are formed in the sleeves 901, annular sliding blocks 903 are arranged at the upper ends of the sleeves 901, when two adjacent sleeves 901 are connected, the lower sleeves 901 are connected with the inner wall of the annular sliding groove 902 in the upper sleeve 901 through the outer wall of the annular sliding blocks 903, the annular sliding grooves 902 can prevent the two sleeves 901 from being separated from each other, the guide component 9 is prevented from failing, when the fixed plate 7 moves upwards, the fixed plate 7 drives the sleeve 901 at the bottommost to move upwards, the sleeve 901 at the bottommost slides along the inner wall of the adjacent sleeves 901, so that the guide function is provided, the stability of the fixed plate 7 is improved, the lifting rope 4 or the fixed plate 7 is prevented from being subjected to the action of external force to violent shaking, the shaking prevention effect of the lifting device is improved, and the structural strength of the sleeves 901 is improved by gradually increasing the diameter of the upper sleeve 901 from the lower to the upper side due to the fact that the wind force is larger at a high place.
Example 4
On the basis of any one of the embodiments 1-3, as shown in fig. 1, a plurality of steel wire ropes 15 matched with lifting lugs 14 on the upper surface of a steel box girder 13 are arranged on the lifting hook 6.
The working principle and the beneficial effects of the technical scheme are as follows: the lifting hook 6 is provided with a plurality of steel wire ropes 15, one end of each steel wire rope 15 is connected with the lifting hook 6, the other end of each steel wire rope 15 is connected with the lifting lug 14 on the upper surface of the steel box girder 13, the steel box girder 13 is lifted through the plurality of steel wire ropes 15, the steel box girder 13 can be always kept in a horizontal state, and compared with the lifting of a single lifting hook 6, the lifting hook is more stable and reliable.
Example 5
On the basis of any one of embodiments 1 to 4, a controller is disposed on the workbench 1, an electronic level is disposed on the hinge plate 8, the electronic level is used for monitoring whether the hinge plate 8 is horizontal, the controller is respectively electrically connected with the electronic level and the electric push rod 12, the controller can receive the monitoring result of the electronic level, and the controller controls the electric push rod 12 to work based on the monitoring result of the electronic level.
The working principle and the beneficial effects of the technical scheme are as follows: the controller is arranged on the workbench 1, the controller is electrically connected with the electronic level meter and the electric push rod 12 on the hinge plate 8, the electronic level meter can monitor whether the hinge plate 8 is in a horizontal state or not, and transmits a monitoring result to the controller in real time, the controller judges after receiving the monitoring result, if the hinge plate 8 monitored by the electronic level meter is not in the horizontal state, the controller controls the electric push rod 12 to stretch out and draw back, thereby adjusting the included angle between the hinge plate 8 and the suspension arm 3 until the hinge plate 8 monitored by the electronic level meter is in the horizontal state, thereby ensuring that the fixed plate 7 is also kept in the horizontal state, and facilitating the stable vertical up-and-down movement of the fixed plate 7 and the suspension hook 6 in the hoisting process.
Example 6
On the basis of any one of the embodiments 1-5, two electric push rods 12 are arranged, the two electric push rods 12 are symmetrically arranged on the front side and the rear side of the lifting rope 4, one end of each electric push rod 12 is hinged with the upper surface of the sliding block 11, and the other end of each electric push rod 12 is hinged with the side wall of the suspension arm 3.
The working principle and the beneficial effects of the technical scheme are as follows: the two electric push rods 12 are arranged, the two electric push rods 12 can improve the bearing capacity of the hinged plate 8, and the two electric push rods 12 are respectively arranged on the front side and the rear side of the lifting rope 4 and can limit the lifting rope 4 above the hinged plate 8 forwards and backwards, so that the lifting rope 4 is prevented from shaking greatly in the front-rear direction.
Example 7
On the basis of any one of the embodiments 1-6, as shown in fig. 1, a screw 16 is arranged between the fixed plate 7 and the hanging seat 5, a through hole 17 is arranged in the center of the screw 16, the screw 16 is sleeved outside the hanging rope 4, one end of the screw 16 is rotatably connected with the bottom wall of the fixed plate 7, and the other end of the screw 16 is rotatably connected with the upper surface of the hanging seat 5.
The working principle and the beneficial effects of the technical scheme are as follows: the fixed plate 7 is connected with the hanging seat 5 through the screw rod 16, the screw rod 16 can enable the fixed plate 7 to be combined with the hanging seat 5 into a whole, meanwhile, through holes 17 in the screw rod 16 can protect the hanging rope 4 below the fixed plate 7, the hanging rope 4 below the fixed plate 7 is prevented from being subjected to external acting force, the lifting hook 6 and the hanging steel box girder 13 are enabled to be more stable, construction risks are reduced, and construction safety is improved.
Example 8
On the basis of embodiment 7, as shown in fig. 3 and 4, the bottom of the fixed plate 7 is provided with an anti-shaking component 18, the anti-shaking component 18 comprises a driving motor 1801, the driving motor 1801 is fixedly connected with the lower surface of the fixed plate 7, the output end of the driving motor 1801 is provided with a first gear 1802, the outer wall of a screw rod 16 is sequentially provided with a second gear 1803 and a movable block 1804 from top to bottom, the second gear 1803 is fixedly connected with the outer wall of the screw rod 16, the center of the movable block 1804 is provided with a threaded hole, the movable block 1804 is in transmission connection with the external threads of the outer wall of the screw rod 16 through the threaded hole, the outer wall of the movable block 1804 is provided with a fixed ring 1805, the fixed ring 1805 is concentrically arranged with the movable block 1804, the inner wall of the fixed ring 1805 is fixedly connected with the outer wall of the movable block 1804, the bottom surface of the fixed plate 7 is provided with a plurality of adjusting plates 1806, one end of the adjusting plates 1806 is hinged with the bottom surface of the fixed plate 7, the cross section of one end of the adjusting plates 1806 is semicircular, the plurality of adjusting plates 1806 are distributed in an annular array about the vertical section of the center line of the lifting rope 4, a connecting rod 1806 is arranged between the adjusting plates 1806 and the connecting rod 1806 and the movable block 1804, one end is hinged with the connecting rod 1805, one end is hinged with the connecting rod 1806, and the other end is hinged with the connecting rod 1806.
The working principle and the beneficial effects of the technical scheme are as follows: when the steel box girder 13 is lifted by the lifting hook 6, the driving motor 1801 is started, the driving motor 1801 rotates to drive the first gear 1802 to rotate, the first gear 1802 rotates to drive the second gear 1803 to rotate, the second gear 1803 rotates to drive the screw 16 to rotate, the screw 16 rotates to drive the movable block 1804 to move along the axis direction of the screw 16 towards the direction close to the fixed plate 7, the movable block 1804 drives the fixed ring 1805 to move towards the direction close to the fixed plate 7, the fixed ring 1805 drives the adjusting plate 1806 to gather towards the center through the connecting rod 1807, the lower end of the adjusting plate 1806 gradually approaches the steel box girder 13 lifted by the lifting hook 6 until the adjusting plate 1806 abuts against the upper surface of the steel box girder 13, at this time, the steel box girder 13 can be fixed through a plurality of adjusting plates 1806 in the anti-shaking assembly 18, the steel box girder 13 is kept in a horizontal state in a synchronous mode through connection of the adjusting plates 1806, when the external acting force is received, large shaking of the steel box girder 13 can not occur, the lifting stability is improved, the distance between the adjusting plates 1806 drives the adjusting plates 1806 towards the center, the steel box girder 13 can be applied to the anti-shaking assembly 18, and the anti-shaking assembly 18 is applicable to various anti-shaking assemblies, and the anti-shaking assembly 18 is greatly, and the range of the anti-shaking assembly is improved.
Example 9
On the basis of the embodiment 3, as shown in fig. 5 and 6, a balancing weight 19 is arranged on the lifting rope 4, the balancing weight 19 is positioned between the hinged plate 8 and the fixed plate 7, and the center of the balancing weight 19 is fixedly connected with the outer wall of the lifting rope 4.
The working principle and the beneficial effects of the technical scheme are as follows: the lifting rope 4 is sleeved with the balancing weight 19, the center of the balancing weight 19 is fixedly connected with the outer wall of the lifting rope 4, the weight of the lifting rope 4 close to one end of the fixed plate 7 can be increased through the balancing weight 19, the lifting rope 4 above the fixed plate 7 is not easy to shake greatly when subjected to external acting force, and the swinging degree of the lifting rope 4 is reduced.
Example 10
On the basis of embodiment 9, as shown in fig. 5 and 6, the shock absorber comprises a shock absorber 20, the shock absorber 20 comprises a plurality of telescopic rods 2001, the telescopic rods 2001 are in one-to-one correspondence with the guide assemblies 9, one ends of the telescopic rods 2001 are connected with the configuration blocks, the other ends of the telescopic rods 2001 are connected with shock absorbing rings 2002, the shock absorbing rings 2002 are sleeved outside the sleeve 901, a plurality of fixed pipes 2003 are arranged on the inner walls of the shock absorbing rings 2002, shock absorbing springs 2004 are arranged in the fixed pipes 2003, one ends of the shock absorbing springs 2004 are fixedly connected with the inner walls of the shock absorbing rings 2002, contact rods 2005 are arranged on the other ends of the shock absorbing springs 2004, the contact rods 2005 are in sliding connection with the inner walls of the fixed pipes 2003, one ends of the contact rods 2005, which are far away from the shock absorbing springs 2004, extend to the outer parts of the fixed pipes 2003 and are provided with pulleys 2006, and the pulleys 2006 are in butt joint with the outer walls of the sleeve 901.
The working principle and the beneficial effects of the technical scheme are as follows: when the lifting rope 4 above the fixed plate 7 is subjected to external acting force to shake, the lifting rope 4 drives the balancing weights 19 to shake, the balancing weights 19 drive a plurality of telescopic rods 2001 to stretch out and draw back, elastic pieces inside the telescopic rods 2001 can buffer and absorb vibration of the balancing weights 19, the shaking amplitude of the balancing weights 19 is reduced, meanwhile, the telescopic rods 2001 transfer force to the damping rings 2002, the contact rods 2005 inside the damping rings 2002 slide in the fixed pipes 2003, the damping springs 2004 stretch out and draw back, further shake of the balancing weights 19 to absorb vibration, along with the rising of the height of the fixed plate 7, the pulleys 2006 slide along the outer wall of the sleeve 901 step by step, along with the gradual increase of the diameter of the sleeve 901, the compression degree of the damping springs 2004 gradually increases, on the one hand, the connection strength of the damping rings 2002 and the sleeve 901 is reduced, the shaking of the damping rings 2002 is increased, the damping force of the telescopic rods 2001 is gradually increased, the limit of the balancing weights 19 is reduced, when the high wind power is transferred to the damping rings 2002, the shaking degree of the contact rods 2005 inside the damping rings 2002 slides in the fixed pipe 2003, the damping components 20 are further reduced, the shaking degree of the lifting rope 4 above the fixed plate 7 can further shake, the lifting force generated by the lifting ropes 4 can be reduced, the shaking force of the steel box is reduced to the steel box 13 through the telescopic vibration, the vibration is greatly reduced, the vibration is reduced, and the vibration is greatly influenced by the vibration of the steel box 13, and the vibration is reduced, and the vibration is greatly reduced.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. A prevent rocking hoist device for steel construction bridge construction, its characterized in that includes: the lifting device comprises a workbench (1), wherein a winch (2) and a lifting arm (3) are arranged on the workbench (1), a lifting rope (4) is wound on the winch (2), one end of the lifting rope (4) is far away from the winch (2), the upper end of the lifting arm (3) is bypassed, a lifting seat (5) is arranged, a lifting hook (6) is arranged at the lower end of the lifting seat (5), a fixing plate (7) is arranged above the lifting seat (5), the fixing plate (7) is fixedly connected with the lifting rope (4), a hinged plate (8) is arranged above the fixing plate (7), one end of the hinged plate (8) is hinged with the lifting arm (3), a plurality of guide assemblies (9) are arranged between the hinged plate (8) and the fixing plate (7), a sliding hole (10) is formed in the center of the hinged plate (8), the lifting rope (4) penetrates through the sliding hole (10) and is in sliding connection with the inner wall of the sliding hole (10), a sliding block (11) is arranged on the upper surface of the hinged plate (8), and an electric push rod (12) is arranged between the sliding block (11) and the lifting arm (3).
2. The anti-shaking lifting device for steel structure bridge construction according to claim 1, wherein the plurality of guide assemblies (9) are distributed in an annular array with respect to the center line of the vertical section of the lifting rope (4).
3. The anti-shaking lifting device for steel structure bridge construction according to claim 1, wherein the guide assembly (9) comprises a plurality of sleeves (901), the sleeves (901) are sequentially sleeved from top to bottom to form a telescopic structure, the diameters of the sleeves (901) are sequentially reduced from top to bottom, the outer walls of the lower ends of the sleeves (901) are provided with chamfers, the inner walls of the sleeves (901) are provided with annular sliding grooves (902), the outer walls of the sleeves (901) close to one end of the hinged plate (8) are provided with annular sliding blocks (903), the annular sliding blocks (903) are in sliding connection with the annular sliding grooves (902) of the inner walls of the adjacent sleeves (901) up and down, the upper ends of the sleeves (901) close to the hinged plate (8) are fixedly connected with the lower surface of the hinged plate (8), and the lower ends of the sleeves (901) close to the fixed plate (7) are fixedly connected with the upper surface of the fixed plate (7).
4. The anti-shaking hoisting device for steel structure bridge construction according to claim 1, characterized in that the lifting hook (6) is provided with a plurality of steel wire ropes (15) which are matched with lifting lugs (14) on the upper surface of the steel box girder (13).
5. The anti-shaking lifting device for steel structure bridge construction according to claim 1, wherein a controller is arranged on the workbench (1), an electronic level meter is arranged on the hinge plate (8), the electronic level meter is used for monitoring whether the hinge plate (8) is horizontal or not, the controller is respectively electrically connected with the electronic level meter and the electric push rod (12), the controller can receive the monitoring result of the electronic level meter, and the controller controls the electric push rod (12) to work based on the monitoring result of the electronic level meter.
6. The anti-shaking lifting device for steel structure bridge construction according to claim 1, wherein two electric push rods (12) are arranged, the two electric push rods (12) are symmetrically arranged on the front side and the rear side of the lifting rope (4), one end of each electric push rod (12) is hinged with the upper surface of the sliding block (11), and the other end of each electric push rod (12) is hinged with the side wall of the suspension arm (3).
7. The anti-shaking lifting device for steel structure bridge construction according to claim 1, wherein a screw (16) is arranged between the fixing plate (7) and the lifting seat (5), a through hole (17) is formed in the center of the screw (16), the screw (16) is sleeved outside the lifting rope (4), one end of the screw (16) is rotationally connected with the bottom wall of the fixing plate (7), and the other end of the screw (16) is rotationally connected with the upper surface of the lifting seat (5).
8. The anti-shaking lifting device for steel structure bridge construction according to claim 7, wherein the anti-shaking component (18) is arranged at the bottom of the fixed plate (7), the anti-shaking component (18) comprises a driving motor (1801), the driving motor (1801) is fixedly connected with the lower surface of the fixed plate (7), a first gear (1802) is arranged at the output end of the driving motor (1801), a second gear (1803) and a movable block (1804) are sequentially arranged on the outer wall of the screw (16) from top to bottom, the second gear (1803) is fixedly connected with the outer wall of the screw (16), a threaded hole is arranged in the center of the movable block (1804), the movable block (1804) is in threaded transmission connection with external threads of the outer wall of the screw rod (16) through a threaded hole, a fixed ring (1805) is arranged on the outer wall of the movable block (1804), the fixed ring (1805) is concentrically arranged with the movable block (1804), the inner wall of the fixed ring (1805) is fixedly connected with the outer wall of the movable block (1804), a plurality of adjusting plates (1806) are arranged on the bottom surface of the fixed plate (7), one end of each adjusting plate (1806) is hinged with the bottom surface of the fixed plate (7), the section of one end of each adjusting plate (1806) far away from the fixed plate (7) is semicircular, the adjusting plates (1806) are distributed in an annular array with respect to the center line of the vertical section of the lifting rope (4), connecting rods (1807) are arranged between the adjusting plates (1806) and the movable block (1804), one end of a connecting rod (1807) is hinged with the inner side wall of the adjusting plate (1806), and the other end of the connecting rod (1807) is hinged with the outer wall of the fixing ring (1805).
9. The anti-shaking lifting device for steel structure bridge construction according to claim 3, wherein the lifting rope (4) is provided with a balancing weight (19), the balancing weight (19) is positioned between the hinged plate (8) and the fixed plate (7), and the center of the balancing weight (19) is fixedly connected with the outer wall of the lifting rope (4).
10. The anti-shaking hoisting device for steel structure bridge construction according to claim 9, further comprising a shock absorption assembly (20), wherein the shock absorption assembly (20) comprises a plurality of telescopic rods (2001), the telescopic rods (2001) are in one-to-one correspondence with the guide assemblies (9), one ends of the telescopic rods (2001) are connected with the configuration blocks, the other ends of the telescopic rods (2001) are connected with shock absorption rings (2002), the shock absorption rings (2002) are sleeved outside the sleeve (901), a plurality of fixed pipes (2003) are arranged on the inner walls of the shock absorption rings (2002), shock absorption springs (2004) are arranged in the fixed pipes (2003), one ends of the shock absorption springs (2004) are fixedly connected with the inner walls of the shock absorption rings (2002), the other ends of the shock absorption springs (2004) are provided with contact rods (2005), one ends of the contact rods (2005) are far away from the shock absorption springs (2004) and extend to the outside of the fixed pipes (2003) and are provided with pulleys (2006), and the pulleys (2006) are in butt joint with the outer walls of the sleeve (901).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310621176.8A CN116621030A (en) | 2023-05-26 | 2023-05-26 | Anti-shaking lifting device for steel structure bridge construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310621176.8A CN116621030A (en) | 2023-05-26 | 2023-05-26 | Anti-shaking lifting device for steel structure bridge construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116621030A true CN116621030A (en) | 2023-08-22 |
Family
ID=87616786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310621176.8A Pending CN116621030A (en) | 2023-05-26 | 2023-05-26 | Anti-shaking lifting device for steel structure bridge construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116621030A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117550482A (en) * | 2024-01-11 | 2024-02-13 | 河南德久建设工程有限公司 | Building construction hoist device |
| CN117963722A (en) * | 2024-04-01 | 2024-05-03 | 河南新创业起重机械有限公司 | Auto repair hoist device |
| CN118083794A (en) * | 2024-04-28 | 2024-05-28 | 河南省第二建筑工程发展有限公司 | Steel construction hoist device |
| CN118637501A (en) * | 2024-08-16 | 2024-09-13 | 河南省川汇建设工程有限公司 | Lifting device for installing roadbed stone crushing equipment |
| CN118637501B (en) * | 2024-08-16 | 2024-11-12 | 河南省川汇建设工程有限公司 | Lifting device for installing roadbed stone crushing equipment |
-
2023
- 2023-05-26 CN CN202310621176.8A patent/CN116621030A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117550482A (en) * | 2024-01-11 | 2024-02-13 | 河南德久建设工程有限公司 | Building construction hoist device |
| CN117550482B (en) * | 2024-01-11 | 2024-03-22 | 河南德久建设工程有限公司 | Building construction hoist device |
| CN117963722A (en) * | 2024-04-01 | 2024-05-03 | 河南新创业起重机械有限公司 | Auto repair hoist device |
| CN117963722B (en) * | 2024-04-01 | 2024-05-31 | 河南新创业起重机械有限公司 | Auto repair hoist device |
| CN118083794A (en) * | 2024-04-28 | 2024-05-28 | 河南省第二建筑工程发展有限公司 | Steel construction hoist device |
| CN118637501A (en) * | 2024-08-16 | 2024-09-13 | 河南省川汇建设工程有限公司 | Lifting device for installing roadbed stone crushing equipment |
| CN118637501B (en) * | 2024-08-16 | 2024-11-12 | 河南省川汇建设工程有限公司 | Lifting device for installing roadbed stone crushing equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN116621030A (en) | Anti-shaking lifting device for steel structure bridge construction | |
| CN102943438B (en) | External vibration absorber capable of inhibiting vibration of stay cable | |
| CN107795946B (en) | Integrated intelligent control solar street lamp | |
| CN108660905B (en) | Damping vibration damper for medium and long suspension cables of suspension bridge | |
| CN210419026U (en) | Crane capable of adjusting counterweight position | |
| CN105586827A (en) | Continuous beam bridge vibration reduction device with inertia force activating function | |
| CN209041762U (en) | A kind of movable bearing support of high intensity earthquake territory | |
| CN113233344B (en) | Novel hoisting device for bridge installation | |
| US4303164A (en) | Structure for damping the oscillation of building cranes | |
| CN212401570U (en) | Hanging device of unmanned aerial vehicle | |
| CN117048846B (en) | Device and method for preventing aircraft from excessively sinking in full-aircraft drop test | |
| CN113021313A (en) | Vibration damping base for reconnaissance robot | |
| CN205616470U (en) | Simple crane | |
| CN114017260B (en) | Active anti-resonance device for sleeve support frame of wind driven generator | |
| CN212744823U (en) | Hydraulic multiple damping device | |
| CN215060479U (en) | Supporting base for generator | |
| CN210380484U (en) | Shock-proof type generator is with bearing device | |
| CN210177999U (en) | Protective net device for constructional engineering | |
| CN221988016U (en) | Hoisting machine for improving protection | |
| CN106390327A (en) | Safety belt suspending device for high-place operation of transformer substation | |
| CN218761112U (en) | Damper and tower barrel assembly | |
| CN220184325U (en) | Building quenching and tempering damper | |
| CN214057294U (en) | General fast railway contact net supporting device | |
| CN117416871B (en) | Cable crane assembled tower | |
| CN221761555U (en) | High-strength shockproof 35KV power transmission line tangent tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |