CN219773054U - Pin-connected panel excavator bucket rod - Google Patents

Abstract

The utility model belongs to the technical field of excavators, and relates to an assembled excavator bucket rod, which comprises a box-shaped main body, two front shaft barrels positioned at the front part of the main body, a lower shaft barrel positioned at the abdomen of the main body and a plurality of ear plates arranged in pairs at the rear part of the main body, wherein the main body is formed by enclosing a shell with an opening at the lower part and a folded plate for sealing the opening position of the shell, the shell is a U-shaped piece with an integral bending structure and comprises two parallel side plates and a backboard connected between the upper edges of the two side plates, a supporting plate is arranged in the shell, and four edges of the supporting plate are respectively connected with the inner walls of the two side plates, the inner wall of the backboard and the outer wall of the lower shaft barrel; the lower part of the side plate is provided with a notch for welding a lower shaft cylinder, and the lower shaft cylinder is positioned at the inner side of the bending position of the folded plate. The opening angle of the shell is controlled through the lower shaft cylinder and the supporting plate in the bucket rod, so that the parallel relation between the two side plates is ensured, the axial distance and the axial parallel relation between the two front shaft cylinders and the lower shaft cylinder are met, and the problem of abrasion of the rotating shaft in the working process is solved.

Description

Pin-connected panel excavator bucket rod

Technical Field

The utility model relates to the technical field of excavators, in particular to an assembled excavator bucket rod.

Background

The arm is a working member for connecting the boom and the bucket to the excavator, and is commonly called a boom because the arm is shorter than the boom. The working device of the excavator adopts a link mechanism principle, and the movement of each part is realized through the expansion and contraction of the oil cylinder. Most of the prior bucket rods are box-shaped structures with the side faces similar to an obtuse triangle. The main body of the box-shaped structure is generally formed by surrounding an upper plate, a web plate and two side plates, and a reinforcing plate is arranged in the box-shaped structure, so that the box-shaped structure is not easy to collapse and deform.

CN204163127U discloses an excavator and a bucket rod thereof, wherein a bucket rod main body is formed by enclosing a bottom plate, a back plate and a U-shaped shell, a lower sleeve is positioned at an acute angle position of the box structure, and a lug plate at the rear is integrally connected to the side surface of the shell. Although the welding position of the shell is reduced, the stress of the shell itself can cause the problem of unstable opening angle. The position that lower sleeve place is unfavorable for overcoming the opening angle problem, and inside the main part does not have the reinforcement structure moreover, and the parallelism can not be kept well to casing two sides, and the otic placode is connected outside the side and is likewise unable to be guaranteed the parallelism, then earhole and pivot can not carry out good matching, and this can bring the easy defect of wearing and tearing of dipper during operation pivot.

There is a need for an improved stick structure to address the above issues.

Disclosure of Invention

The utility model mainly aims to provide an assembled excavator bucket rod, which can be spliced and welded into the bucket rod by fewer parts, is convenient to weld, has a stable structure and has high position precision between lug holes.

The utility model realizes the aim through the following technical scheme: the utility model provides an assembled excavator bucket rod, includes box structure's main part, is located two front axle section of thick bamboo in main part front portion, is located the lower axle section of thick bamboo of main part belly and be in a plurality of otic placodes that main part rear portion set up in pairs, the main part is enclosed by lower open-ended casing and the folded plate that seals casing open position and form, the casing is U type spare of integral type bending structure, including two parallel curb plates and the backplate of connecting between two curb plate upper edges, be equipped with the backup pad in the casing, four edges of backup pad are connected respectively two the inner wall of curb plate, the inner wall of backplate and the outer wall of lower axle section of thick bamboo; the lower part of the side plate is provided with a notch for welding the lower shaft cylinder, and the lower shaft cylinder is positioned at the inner side of the bending position of the folded plate.

Specifically, the folded plate is divided into a web plate and a tail plate which are connected front and back, and a welding strip is arranged on the inner side of the butt joint position of the web plate and the tail plate.

Further, the lower shaft cylinder is formed by connecting two short sleeves with skirt edges, the skirt edges are provided with step-shaped welding edges at the contact positions of the skirt edges and the notch, the welding edges are supported on the inner sides of the notch and welded with the edges of the notch, and the edges of the skirt edges except the welding edges are welded with the inner sides of the folded corners of the web plate.

Further, the afterbody of curb plate is the obtuse angle, the tailboard is connected in the obtuse angle edge of two curb plates, the otic placode include parallel weld in the back otic placode on the tailboard, back otic placode has the matching the folded edge in the tailboard dog angle outside.

Further, the rear earhole is formed in the rear earplate, a rear positioning sleeve is connected to the outer side of the rear earplate, and the rear positioning sleeve and the rear earhole are coaxial and have the same inner diameter.

Further, the ear plates comprise a pair of upper ear plates which are arranged on the outer surface of the backboard in parallel, the upper end of the tail plate is provided with a protruding area higher than the outer surface of the backboard, and the tail part of the upper ear plates is connected with the protruding area.

Further, the upper ear plate is provided with an upper ear hole, an upper positioning sleeve is connected to the outer side of the upper ear plate, and the upper positioning sleeve and the upper ear hole are coaxial and have the same inner diameter.

Specifically, the front axle section of thick bamboo includes the parallel first front axle section of thick bamboo and the second front axle section of thick bamboo around, the front end of curb plate have weld in concave arc limit on the cambered surface of first front axle section of thick bamboo, the front portion of curb plate has by the side opening that the second front axle section of thick bamboo passed and connected, the front end of backplate sag and weld in the surface of first front axle section of thick bamboo, the front end welding of folded plate in the surface of first front axle section of thick bamboo.

Further, a side reinforcing plate is welded on the outer side face of each side plate, and the side reinforcing plate is located between the first front shaft barrel and the second front shaft barrel.

Specifically, the surface of main part still is equipped with a plurality of silk seats, a plurality of oil pipe mounting and a plurality of stationary blade.

The technical scheme of the utility model has the beneficial effects that:

1. the main body part in the bucket rod is fewer, and the back plate and the two side plates are integrally bent to form the shell, so that welding between the back plate and the two side plates is omitted, cutting processing is simpler, welding times are reduced, the relative position is more accurate, and structural accuracy is improved.

2. The opening angle of the shell is controlled through the lower shaft cylinder and the supporting plate, the parallel relation between the two side plates is guaranteed, the axial distance and the axial parallel relation between the two front shaft cylinders and the lower shaft cylinder are met, and the abrasion problem of the rotating shaft in the working process is relieved.

Drawings

FIG. 1 is a perspective view of a bucket rod of an assembly excavator;

FIG. 2 is an exploded view of a bucket rod of the modular excavator;

fig. 3 is an overall view of the front axle tube.

Marked in the figure as:

1-a shell, 11-a back plate, 12-a side plate, 121-a notch, 122-a concave arc edge and 123-a side hole;

2-folded plates, 21-webs, 22-tail plates, 221-convex areas and 23-welding strips;

31-a first front axle tube, 32-a second front axle tube;

4-lower shaft cylinder, 41-short sleeve, 411-skirt, 412-welding edge;

51-rear ear plate, 511-folded edge, 512-rear ear hole and 52-rear positioning sleeve;

61-upper ear plate, 611-upper ear hole, 62-upper positioning sleeve;

7-supporting plates;

8-side reinforcing plates;

91-wire seat, 92-oil pipe fixing piece, 93-fixing piece.

Detailed Description

The present utility model will be described in further detail with reference to specific examples.

Examples:

as shown in fig. 1 and 2, the assembled excavator bucket rod of the present utility model comprises a box-shaped main body, two front axle cylinders (a first front axle cylinder 31 and a second front axle cylinder 32) positioned at the front part of the main body, a lower axle cylinder 4 positioned at the belly of the main body and a plurality of ear plates (a pair of rear ear plates 51 and a pair of upper ear plates 61) arranged in pairs at the rear part of the main body, wherein the main body is formed by enclosing a shell 1 with an opening at the lower part and a folded plate (a web 21 and a tail plate 22) for sealing the opening position of the shell 1, the shell 1 is a U-shaped member with an integral bending structure, the U-shaped member comprises two parallel side plates 12 and a back plate 11 connected between the upper edges of the two side plates 12, a supporting plate 7 is arranged in the shell 1, and four edges of the supporting plate 7 are respectively connected with the inner walls of the two side plates 12, the inner wall of the back plate 11 and the outer wall of the lower axle cylinder 4; the lower part of the side plate 12 is provided with a notch 121 for welding the lower shaft cylinder 4, and the lower shaft cylinder 4 is positioned at the inner side of the bending position of the folded plate 2.

The main body parts in the bucket rod are fewer, and the backboard 11 and the two side plates 12 of the bucket rod are integrally bent to form the shell 1, so that welding between the backboard 11 and the two side plates 12 is omitted, cutting processing is simpler, welding times are reduced, the relative positions are more accurate, and structural accuracy is improved. The opening angle of the shell 1 is controlled through the lower shaft barrel 4 and the supporting plate 7, so that the parallel relation between the two side plates 12 is ensured, the parallel relation between the axial distances and the axial directions of the two front shaft barrels and the lower shaft barrel 4 is met, and the abrasion problem of the rotating shaft in the working process is relieved.

As shown in fig. 2, the flap 2 is divided into a web 21 and a tail 22 connected back and forth, and a welding strip 23 is provided inside the butt joint position of the web 21 and the tail 22. The housing 1 forms a main outer wall of a box-shaped structure, and when the support plate 7, the front shaft tube (the first front shaft tube 31, the second front shaft tube 32) and the lower shaft tube 4 are welded, the opening of the lower portion of the housing 1 is ensured because the above components are spot-welded from the inside of the housing 1. After the welding of the above parts is completed, the folded plate 2 is required to seal the opening position of the shell 1. However, the folded plate 2 has two bending positions, so that the two bending positions are separated into a web 21 and a tail plate 22, a certain gap is reserved between the web 21 and the tail plate 22, and the length difference is compensated by a welding strip 23 in order to avoid mismatching between the two bending positions and the opening edge of the shell 1. In actual welding, the welding strip 23 may be welded to the edge of the web 21 or the tail plate 22, and then welded to the edge of the other, and the welding strip 23 may also prevent the welding flux from leaking to the inner side of the body to cause the problem of weak welding.

As shown in fig. 2 and 3, the lower shaft tube 4 is formed by connecting two short sleeves 41 having a skirt 411, the skirt 411 has a stepped welding edge 412 at a contact position with the notch 121, the welding edge 412 is supported inside the notch 121 and welded with an edge of the notch 121, and an edge of the skirt 411 other than the welding edge 412 is welded with an inside of a corner of the web 21. The two short sleeves 41 can each be formed by casting, resulting in a structure with a skirt 411 and a welded edge 412. The two short sleeves 41 are mirror-symmetrically connected during welding, with the welding edge 412 being inward. The welding edge 412 can make the welding surface not only be on the arc-shaped surface of the notch 121, but also on the inner surface of the notch 121, and meanwhile, the skirt 411 is also responsible for being connected with the web 21, so that the connection strength between the lower shaft barrel 4 and surrounding parts is increased, and the opening stress of the shell 1 is better overcome.

As shown in fig. 1 and 2, the tail portions of the side plates 12 are at an obtuse angle, the tail plates 22 are connected to the obtuse edges of the two side plates 12, and the ear plates include rear ear plates 51 welded in parallel to the tail plates 22, and the rear ear plates 51 have folded edges 511 matching the outside of the folded corners of the tail plates 22. The tail obtuse angle of the side plate 12 is connected with the folded edge 511 of the rear ear plate 51 through the tail plate 22, so that the welding position of the tail plate 22 and the side plate 12 is more three-dimensional, and the connection is stable; compared with the straight line connection, the rear ear plates 51 are not easy to shake, and the parallelism between the two rear ear plates 51 can be better ensured during operation.

As shown in fig. 2, the rear ear plate 51 has a rear ear hole 512, and a rear positioning sleeve 52 is connected to the outer side of the rear ear plate 51, and the rear positioning sleeve 52 and the rear ear hole 512 are coaxial and have the same inner diameter. The rear positioning sleeve 52 is used for prolonging the contact area between the rear ear hole 512 and the rotating shaft, so as to avoid deformation of the rear ear hole 512 caused by too concentrated stress.

As shown in fig. 1 and 2, the ear plates include a pair of upper ear plates 61 disposed in parallel to the outer surface of the back plate 11, and the upper end of the tail plate 22 has a convex region 221 higher than the outer surface of the back plate 11, and the tail of the upper ear plate 61 is connected to the convex region 221. On the one hand, the protruding area 221 serves as a rear reference of the two upper ear plates 61, can play a limiting role on the front and rear positions of the two upper ear plates on the back plate 11, and is also beneficial to ensuring that the two upper ear holes 611 are in a coaxial position; on the other hand, the protruding areas 221, the back plate 11 and the upper ear plates 61 form a two-to-two vertical connection structure, so that the structure is more stable, and the parallelism between the two upper ear plates 61 can be ensured.

As shown in fig. 2, the upper ear plate 61 has an upper ear hole 611, and an upper positioning sleeve 62 is connected to the outer side of the upper ear plate 61, and the upper positioning sleeve 62 is coaxial with the upper ear hole 611 and has an equal inner diameter. The upper positioning sleeve 62 is used for prolonging the contact area between the upper ear hole 611 and the rotating shaft, so as to avoid deformation of the upper ear hole 611 caused by too concentrated stress.

As shown in fig. 1 and 2, the front shaft comprises a first front shaft 31 and a second front shaft 32 which are parallel in front-rear direction, the front end of the side plate 12 has a concave arc edge 122 welded on the arc surface of the first front shaft 31, the front part of the side plate 12 has a side hole 123 penetrated and connected by the second front shaft 32, the front end of the back plate 11 is bent down and welded on the outer surface of the first front shaft 31, and the front end of the folded plate 2 (i.e. the front end of the web 21) is welded on the outer surface of the first front shaft 31. The first front shaft barrel 31 and the second front shaft barrel 32 form two hinge points at the front part of the bucket rod, and the welding position of the first front shaft barrel 31 is staggered back and forth in the connecting mode, so that deformation in multiple directions can be resisted.

As shown in fig. 1 and 2, a side reinforcing plate 8 is welded to the outer side surface of each side plate 12, and the side reinforcing plate 8 is connected between the first front shaft tube 31 and the second front shaft tube 32. When the excavator works, the first front shaft barrel 31 and the second front shaft barrel 32 are two concentrated stress points, so that the side plates 12 are easy to deform at the positions between the two, the wall thickness of the side reinforcing plates 8 can be increased, the strength of the side reinforcing plates can be increased, and the service life of the bucket rod can be prolonged.

As shown in fig. 1 and 2, the outer surface of the main body is further provided with a plurality of wire seats 91, a plurality of oil pipe fixing members 92 and a plurality of fixing pieces 93. The wire seat 91, the oil tube securing member 92 and the securing tab 93 are all small pieces on the stick. Since the boom and the arm are generally driven by the hydraulic cylinder, it is necessary to provide an oil pipe through which the oil flows, the wire seat 91 is for closely attaching the oil pipe to the surface of the arm, the oil pipe fixing member 92 is for guiding and connecting to the hydraulic cylinder, and the fixing piece 93 is for fixing the hydraulic cylinder.

What has been described above is merely some embodiments of the present utility model. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model.

Claims (10)

1. The utility model provides an assembled excavator bucket rod, includes box structure's main part, is located two front axle section of thick bamboo in main part front portion, be located the lower axle section of thick bamboo of main part belly and a plurality of otic placodes that set up in pairs in main part rear portion, its characterized in that: the main body is formed by surrounding a shell with an opening at the lower part and a folded plate for sealing the opening of the shell, the shell is a U-shaped piece with an integrated bending structure and comprises two parallel side plates and a back plate connected between the upper edges of the two side plates, a supporting plate is arranged in the shell, and four edges of the supporting plate are respectively connected with the inner walls of the two side plates, the inner wall of the back plate and the outer wall of the lower shaft barrel; the lower part of the side plate is provided with a notch for welding the lower shaft cylinder, and the lower shaft cylinder is positioned at the inner side of the bending position of the folded plate.

2. The modular excavator stick of claim 1, wherein: the folded plate is divided into a web plate and a tail plate which are connected front and back, and a welding strip is arranged at the inner side of the butt joint position of the web plate and the tail plate.

3. The modular excavator stick of claim 2, wherein: the lower shaft cylinder is formed by connecting two short sleeves with skirt edges, the contact positions of the skirt edges and the notch are provided with step-shaped welding edges, the welding edges are supported on the inner sides of the notch and welded with the edges of the notch, and the edges of the skirt edges except the welding edges are welded with the inner sides of the folded corners of the web plate.

4. The modular excavator stick of claim 2, wherein: the afterbody of curb plate is the obtuse angle, the tailboard is connected in the obtuse angle edge of two curb plates, the otic placode including parallel weld in back otic placode on the tailboard, back otic placode has the matching the folded edge in the tailboard dog.

5. The modular excavator boom of claim 4, wherein: the rear earhole is formed in the rear earplate, a rear positioning sleeve is connected to the outer side of the rear earplate, and the rear positioning sleeve and the rear earhole are coaxial and have the same inner diameter.

6. The modular excavator stick of claim 2, wherein: the earplates comprise a pair of upper earplates which are arranged on the outer surface of the backboard in parallel, the upper end of the tail plate is provided with a protruding area higher than the outer surface of the backboard, and the tail part of the upper earplates is connected with the protruding area.

7. The modular excavator boom of claim 6, wherein: the upper ear plate is provided with an upper ear hole, an upper positioning sleeve is connected to the outer side of the upper ear plate, and the upper positioning sleeve and the upper ear hole are coaxial and have the same inner diameter.

8. The modular excavator stick of claim 1, wherein: the front shaft cylinder comprises a first front shaft cylinder and a second front shaft cylinder which are parallel front and back, the front end of the side plate is provided with a concave arc edge welded on the arc surface of the first front shaft cylinder, the front part of the side plate is provided with a side hole penetrated and connected by the second front shaft cylinder, the front end of the back plate is bent downwards and welded on the outer surface of the first front shaft cylinder, and the front end of the folded plate is welded on the outer surface of the first front shaft cylinder.

9. The modular excavator boom of claim 8, wherein: and a side reinforcing plate is welded on the outer side surface of each side plate and connected between the first front shaft cylinder and the second front shaft cylinder.

10. The modular excavator stick of claim 1, wherein: the outer surface of the main body is also provided with a plurality of wire seats, a plurality of oil pipe fixing pieces and a plurality of fixing pieces.