Excavator bucket rod

Abstract

The invention discloses an excavator bucket rod, which solves the problem that the bucket rod is easy to break at a stress concentration position, improves the stability of a reinforcing plate and reduces the risk of pipeline damage caused by frequent swing of the bucket rod. According to the technical scheme, the working arm comprises a working arm body and a pipeline fixing device; the operation arm body is of a box-shaped structure composed of a top plate, a front cover plate, a bottom plate and two side plates, a first hinge hole is formed in one end of the bottom plate, a second hinge hole is formed in the other end of the bottom plate, and a reinforcing web plate is arranged on the side plate close to the first hinge hole; a first reinforcing plate is arranged on the bottom plate close to the first hinge hole, and a second reinforcing plate is arranged on the bottom plate close to the second hinge hole; the pipeline fixing device comprises a rotatable pipe clamp and a fixed pipe clamp, and the rotatable pipe clamp and the fixed pipe clamp are both arranged on the top plate.

Description

Technical Field

[0001] The invention belongs to the technical field of excavator equipment, and in particular relates to an excavator bucket arm. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] Excavators are often used in loading and unloading debris and soil. They have a large workload and are easily subjected to impact from the debris and soil on the bucket arm, which causes the bucket arm to continuously receive pulse loads during operation. Therefore, the bucket arm is prone to stress concentration and fracture at the location of stress concentration.

[0004] The prior art publication number CN 108360588 B discloses a method of welding a reinforcement plate at the bottom of a boom to prevent impact and collision, and welding a plurality of reinforcement ribs on the reinforcement plate, and the reinforcement ribs are arranged along the length of the boom. The reinforcement ribs are welded by intermittent welding along the length direction, but the construction process is complicated, and the stability of multiple independent reinforcement ribs is poor, and the stress concentration and dispersion effect is poor. At the same time, the boom of an excavator is a component with a high swing frequency, and the existing pipes of the boom of an excavator are mostly fixed to the boom by pipe clamps. During the swinging process of the pipe, there is also the problem of fatigue and cracking of the pipe at the fixed position. Summary of the invention

[0005] In view of the above problems, the present invention provides an excavator boom, which solves the problem that the boom is prone to breakage at the stress concentration position, improves the stability of the reinforcement plate, and reduces the risk of pipeline damage due to frequent swinging of the boom through the cooperation of a rotatable pipe clamp and a fixed pipe clamp, thereby extending the service life of the pipeline.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] In a first aspect, the present invention provides an excavator boom, comprising: an arm body and a pipeline fixing device; the arm body is a box-shaped structure similar to a rhombus, consisting of a top plate, a front cover plate, a bottom plate and two side plates, one end of the bottom plate is provided with a first hinge hole, the other end is provided with a second hinge hole, and a reinforcing web is provided on the side plate near the first hinge hole; a first reinforcing plate is provided on the bottom plate near the first hinge hole, and a second reinforcing plate is provided on the bottom plate near the second hinge hole;

[0008] The pipeline fixing device includes a rotatable pipe clamp and a fixed pipe clamp, both of which are arranged on the top plate, and the rotatable pipe clamp is arranged at one end of the top plate close to the first hinge hole; the rotatable pipe clamp includes a hinged base, a pipe clamp bracket, a pipe protection sleeve and a pipe clamp cover; first fixing holes are arranged at both ends of the hinged base, the hinged base is hinged to one side of the pipe clamp bracket, the pipe clamp bracket and the pipe clamp cover are fixedly connected by a first connecting piece, a circular first pipe slot hole is arranged between the other side of the pipe clamp bracket and the pipe clamp cover, and a pipe protection sleeve is installed in the first pipe slot hole; two first pipe slot holes are arranged, and the first connecting piece is arranged between the two first pipe slot holes.

[0009] Furthermore, a connecting rod mounting seat, a dipper arm cylinder mounting seat and a bucket cylinder mounting seat are also provided on the working arm body; the connecting rod mounting seat is arranged between the first hinge hole and the reinforcing web, the dipper arm cylinder mounting seat is arranged at an end of the top plate away from the rotatable pipe clamp, and the bucket cylinder mounting seat is arranged on the front cover plate.

[0010] Furthermore, the front cover plate is V-shaped and is punched from a whole plate.

[0011] Furthermore, the top plate, front cover plate, bottom plate and two side plates are all made of high-strength steel plates.

[0012] Furthermore, the reinforcing web is made of a steel plate with a trapezoidal structure, and the long side of the reinforcing web is arc-shaped. There are two reinforcing webs, which are distributed on the side plates on both sides respectively. The reinforcing web is connected to the side plates by welding, and the welding is performed in a full welding form.

[0013] Furthermore, the first reinforcing plate has the same structure as the second reinforcing plate, and both the first reinforcing plate and the second reinforcing plate are connected to the base plate by welding. The first reinforcing plate is a rectangular steel plate, one of the short sides of which is provided with a U-shaped groove, and the U-shaped grooves of the first reinforcing plate and the second reinforcing plate are arranged opposite to each other.

[0014] Furthermore, the connecting rod mounting seat, the first hinge hole and the second hinge hole are all provided with shaft sleeves, and the connecting rod mounting seat, the first hinge hole and the second hinge hole are respectively fixed to the shaft sleeves by interference fit; the shaft sleeve of the connecting rod mounting seat is provided with a first hinge pin, and a pin fixing plate is provided at one end of the first hinge pin; the shaft sleeve of the second hinge hole is provided with a second hinge pin, and a pin fixing plate is provided at one end of the second hinge pin.

[0015] Furthermore, the boom cylinder mounting seat and the bucket cylinder mounting seat are both composed of two ear plates, which are arranged opposite to each other and have a set distance between them for installing the hydraulic cylinder. A through hole is provided on the ear plate, and a hydraulic cylinder hinge pin is provided in the through hole.

[0016] Furthermore, there are a plurality of fixed pipe clamps, which are evenly arranged between the bucket cylinder mounting seat and the rotatable pipe clamp.

[0017] Furthermore, the fixed pipe clamp includes a fixed seat and a fixed pipe clamp cover, and second fixing holes are respectively provided at both ends of the fixed seat, and a second pipe slot hole is provided on an adjacent side of the fixed seat and the fixed pipe clamp cover, and each of the fixed pipe clamps is provided with two second pipe slot holes, and the second pipe slot holes are composed of semicircular pipe slot holes on the fixed seat and the fixed pipe clamp cover, and the fixed seat and the fixed pipe clamp cover are fixedly connected by a second connecting piece, and the second connecting piece is provided between the two second pipe slot holes.

[0018] Compared with the prior art, the present invention has the following advantages and positive effects:

[0019] The working arm body of the present invention adopts a box-type structure, and a reinforcing web, a first reinforcing plate, a second reinforcing plate, etc. are respectively arranged near the first hinge hole and the second hinge hole, thereby improving the overall structural strength of the boom, so that it can better withstand various forces during operation; by arranging a rotatable pipe clamp and a fixed pipe clamp, the problem of effective fixation of the pipeline on the excavator boom is solved, and the pipeline is prevented from shaking, shifting, etc., and the stability of the pipeline during operation is guaranteed; at the same time, during the swinging of the boom, the pipeline will swing with the rotation of the rotatable pipe clamp, providing a buffer distance between the pipeline and the fixed pipe clamp, reducing the risk of pipeline damage due to frequent movements of the excavator, extending the service life of the pipeline, and ensuring the continuity of the excavator's operation.

[0020] The reinforcing web and the side plates of the present invention are connected by welding, and the welding is performed in the form of full welding, which effectively prevents the entire boom from breaking at the stress concentration position during the force application process. The arc structure can effectively disperse the stress concentration along the arc boundary. The first reinforcing plate and the second reinforcing plate are provided with relatively arranged U-shaped grooves, and the reinforcing plates and reinforcing webs designed on the structure of the working arm body are provided with curved grooves. While the overall structural strength of the boom is enhanced, the stress concentration is effectively dispersed along the boundary of the curved groove, which can better cope with high-intensity force conditions in excavation operations, reduce deformation and fracture problems, and improve the durability of the boom. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0022] Figure 1 The overall structure diagram of the bucket arm of the excavator of the present invention;

[0023] Figure 2 This is a bottom view of the digger arm of the excavator of the present invention;

[0024] Figure 3 This is a structural diagram of the rotatable pipe clamp of the present invention;

[0025] Figure 4 This is a structural diagram of the fixed pipe clamp of the present invention.

[0026] In the figure: 1. top plate; 2. bottom plate; 3. side plate; 4. front cover plate; 5. boom cylinder mounting seat; 6. bucket cylinder mounting seat; 7. rotatable pipe clamp; 8. fixed pipe clamp; 9. first hinge hole; 10. hydraulic cylinder hinge pin; 11. first reinforcement plate; 12. connecting rod mounting seat; 13. first hinge pin; 14. reinforcement web; 15. second hinge hole; 16. second hinge pin; 17. second reinforcement plate; 18. hinge base; 19. pipe clamp bracket; 20. pipe protection cover; 21. first connecting piece; 22. pipe clamp cover; 23. fixed pipe clamp cover; 24. second connecting piece; 25. shock-absorbing protection cover; 26. fixing seat. DETAILED DESCRIPTION

[0027] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0028] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0029] The present embodiment discloses an excavator bucket arm, such as Figure 1-Figure 4As shown, it includes a working arm body and a pipeline fixing device; the working arm body is a box-shaped structure similar to a rhombus, which is composed of a top plate 1, a front cover plate 4, a bottom plate 2 and two side plates 3. The side plate 3 is a quadrilateral plate formed by two long sides and two short sides. One long side of the side plate 3 is fixedly connected to the bottom plate 2, the top plate 1 is fixedly connected to the other long side of the side plate 3, and the front cover plate 4 is fixedly connected to the two short sides; one end of the bottom plate 2 is provided with a first hinge hole 9, and the other end is provided with a second hinge hole 9. Hole 15, a reinforcing web 14 is arranged on the side plate 3 near the first hinge hole 9; a first reinforcing plate 11 is arranged on the bottom plate 2 near the first hinge hole 9, and a second reinforcing plate 17 is arranged on the bottom plate 2 near the second hinge hole 15; the working arm body adopts a box-type structure, and a reinforcing web 14, a first reinforcing plate 11, a second reinforcing plate 17, etc. are respectively arranged near the first hinge hole 9 and the second hinge hole 15, thereby improving the overall structural strength of the boom and enabling it to better withstand various forces during operation.

[0030] The pipeline fixing device includes a rotatable pipe clamp and a fixed pipe clamp, the rotatable pipe clamp 7 and the fixed pipe clamp 8 are both arranged on the top plate 1, and the rotatable pipe clamp is arranged at one end of the top plate 1 close to the first hinge hole 9; the rotatable pipe clamp includes a hinged base 18, a pipe clamp bracket 19, a pipe protection sleeve 20 and a pipe clamp cover 22; first fixing holes are arranged at both ends of the hinged base 18, the hinged base 18 is hinged to one side of the pipe clamp bracket 19, the pipe clamp bracket 19 and the pipe clamp cover 22 are fixedly connected by a first connecting member 21, a circular first pipe slot hole is arranged between the other side of the pipe clamp bracket 19 and the pipe clamp cover 22, and a pipe protection sleeve 20 is installed in the first pipe slot hole; there are two first pipe slot holes, and the first connecting member 21 is arranged between the two first pipe slot holes. By setting a rotatable pipe clamp and a fixed pipe clamp, the problem of effective fixation of the pipeline on the excavator boom is solved; at the same time, during the swing of the boom, the pipeline will swing with the rotation of the rotatable pipe clamp, providing a buffer distance between the pipeline and the fixed pipe clamp, reducing the risk of pipeline damage due to frequent movement of the excavator, extending the service life of the pipeline, and ensuring the continuity of the excavator's operation.

[0031] The working arm body is also provided with a connecting rod mounting seat 12, a dipper cylinder mounting seat 5 and a bucket cylinder mounting seat 6; the connecting rod mounting seat 12 is arranged between the first hinge hole 9 and the reinforcing web 14, the dipper cylinder mounting seat 5 is arranged at the end of the top plate 1 away from the rotatable pipe clamp 7, and the bucket cylinder mounting seat 6 is arranged on the front cover plate 4; the front cover plate 4 is V-shaped and is stamped from a whole piece of plate; the top plate 1, the front cover plate 4, the bottom plate 2 and the two side plates 3 are all made of high-strength steel plates.

[0032] The reinforcing web 14 is made of a steel plate with a trapezoidal structure, and the long side of the reinforcing web 14 is arc-shaped. There are two reinforcing webs 14, which are respectively distributed on the side plates 3 on both sides. The reinforcing web 14 is connected to the side plates 3 by welding, and the welding is carried out in the form of full welding, which effectively prevents the entire boom from breaking at the stress concentration position during the force process. The arc structure can effectively disperse the stress concentration along the arc boundary. The first reinforcing plate 11 has the same structure as the second reinforcing plate 17. The first reinforcing plate 11 and the second reinforcing plate 17 are connected to each other by welding. The plates 17 are connected to the base plate 2 by welding. The first reinforcing plate 11 is a rectangular steel plate, one of the short sides of which is provided with a U-shaped groove. The U-shaped grooves of the first reinforcing plate 11 and the second reinforcing plate 17 are arranged relative to each other. The reinforcing plates and reinforcing webs 14 designed on the structure of the working arm body are provided with curved grooves. While the overall structural strength of the boom is enhanced, the stress concentration is effectively dispersed along the boundaries of the curved grooves, which can better cope with high-intensity stress conditions in excavation operations, reduce deformation and fracture problems, and improve the durability of the boom.

[0033] The connecting rod mounting seat 12, the first hinge hole 9 and the second hinge hole 15 are all provided with shaft sleeves, and the connecting rod mounting seat 12, the first hinge hole 9 and the second hinge hole 15 are respectively fixed to the shaft sleeves by interference fit; the shaft sleeve of the connecting rod mounting seat 12 is provided with a first hinge pin 13, and a pin fixing plate is provided at one end of the first hinge pin 13; the shaft sleeve of the second hinge hole 15 is provided with a second hinge pin 16, and a pin fixing plate is provided at one end of the second hinge pin 16; the boom cylinder mounting seat 5 and the bucket cylinder mounting seat 6 are both composed of two ear plates, the two ear plates are arranged opposite to each other, and a set distance is provided between them for installing the hydraulic cylinder, and a through hole is provided on the ear plate, and the hydraulic cylinder articulation pin 10 is provided in the through hole.

[0034] The front cover plate 4 is provided with a rotatable pipe clamp mounting seat 7 and a fixed pipe clamp mounting seat 8. The rotatable pipe clamp is arranged at one end of the top plate 1 close to the first hinge hole 9. There are multiple fixed pipe clamps, which are evenly arranged between the bucket cylinder mounting seat 6 and the rotatable pipe clamp 7. The fixed pipe clamp includes a fixed seat 26 and a fixed pipe clamp cover 23. The two ends of the fixed seat 26 are respectively provided with second fixing holes. The adjacent sides of the fixed seat 26 and the fixed pipe clamp cover 23 are provided with second pipeline slot holes. Each of the fixed pipe clamps is provided with two second pipeline slot holes, and the second pipeline slot holes are composed of the semicircular pipeline slot holes on the fixed seat 26 and the fixed pipe clamp cover 23. The fixed seat 26 and the fixed pipe clamp cover 23 are fixedly connected by a second connecting member 24. The second connecting member 24 is arranged between the two second pipeline slot holes, and a shock-absorbing protective cover 25 is arranged in the second pipeline slot hole.

[0035] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. An excavator bucket arm, characterized in that: include: Working arm body and pipeline fixing device; the working arm body is a box-shaped structure similar to a rhombus, which is composed of a top plate, a front cover plate, a bottom plate and two side plates, a first hinge hole is arranged at one end of the bottom plate, a second hinge hole is arranged at the other end, and a reinforcing web is arranged on the side plate near the first hinge hole; a first reinforcing plate is arranged on the bottom plate near the first hinge hole, and a second reinforcing plate is arranged on the bottom plate near the second hinge hole; The pipeline fixing device includes a rotatable pipe clamp and a fixed pipe clamp, both of which are arranged on the top plate, and the rotatable pipe clamp is arranged at one end of the top plate close to the first hinge hole; the rotatable pipe clamp includes a hinged base, a pipe clamp bracket, a pipe protection sleeve and a pipe clamp cover; first fixing holes are arranged at both ends of the hinged base, the hinged base is hinged to one side of the pipe clamp bracket, the pipe clamp bracket and the pipe clamp cover are fixedly connected by a first connecting piece, a circular first pipe slot hole is arranged between the other side of the pipe clamp bracket and the pipe clamp cover, and a pipe protection sleeve is installed in the first pipe slot hole; two first pipe slot holes are arranged, and the first connecting piece is arranged between the two first pipe slot holes.

2. An excavator boom as claimed in claim 1, characterized in that: The working arm body is also provided with a connecting rod mounting seat, a dipper arm cylinder mounting seat and a bucket cylinder mounting seat; the connecting rod mounting seat is arranged between the first hinge hole and the reinforcing web, the dipper arm cylinder mounting seat is arranged at one end of the top plate away from the rotatable pipe clamp, and the bucket cylinder mounting seat is arranged on the front cover plate.

3. An excavator boom as claimed in claim 1, characterized in that: The front cover plate is V-shaped and is formed by punching a whole plate.

4. An excavator boom as claimed in claim 1, characterized in that: The top plate, front cover plate, bottom plate and two side plates are all made of high-strength steel plates.

5. The excavator boom according to claim 1, characterized in that: The reinforcing web is made of a steel plate with a trapezoidal structure, and the long side of the reinforcing web is arc-shaped. There are two reinforcing webs, which are respectively distributed on the side plates on both sides. The reinforcing web is connected to the side plates by welding, and the welding is performed in the form of full welding.

6. The excavator boom according to claim 1, characterized in that: The first reinforcing plate has the same structure as the second reinforcing plate. Both the first reinforcing plate and the second reinforcing plate are connected to the base plate by welding. The first reinforcing plate is a rectangular steel plate, one of the short sides of which is provided with a U-shaped groove. The U-shaped grooves of the first reinforcing plate and the second reinforcing plate are arranged opposite to each other.

7. An excavator boom as claimed in claim 2, characterized in that: The connecting rod mounting seat, the first hinge hole and the second hinge hole are all provided with shaft sleeves, and the connecting rod mounting seat, the first hinge hole and the second hinge hole are respectively fixed to the shaft sleeves by interference fit; the shaft sleeve of the connecting rod mounting seat is provided with a first hinge pin, and a pin fixing plate is provided at one end of the first hinge pin; the shaft sleeve of the second hinge hole is provided with a second hinge pin, and a pin fixing plate is provided at one end of the second hinge pin.

8. An excavator boom as claimed in claim 7, characterized in that: The boom cylinder mounting seat and the bucket cylinder mounting seat are both composed of two ear plates, which are arranged opposite to each other and have a set distance between them for installing the hydraulic cylinder. A through hole is provided on the ear plate, and a hydraulic cylinder hinge pin is provided in the through hole.

9. The excavator boom according to claim 1, characterized in that: There are a plurality of fixed pipe clamps, which are evenly arranged between the bucket cylinder mounting seat and the rotatable pipe clamp.

10. The excavator boom according to claim 1, characterized in that: The fixed pipe clamp includes a fixed seat and a fixed pipe clamp cover, and second fixing holes are respectively provided at both ends of the fixed seat, and a second pipe slot hole is provided on an adjacent side of the fixed seat and the fixed pipe clamp cover, and each of the fixed pipe clamps is provided with two second pipe slot holes, and the second pipe slot holes are composed of semicircular pipe slot holes on the fixed seat and the fixed pipe clamp cover, and the fixed seat and the fixed pipe clamp cover are fixedly connected by a second connecting piece, and the second connecting piece is provided between the two second pipe slot holes.

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