Excavator forearm and bucket connection protection device

Abstract

The utility model discloses an excavator forearm and bucket connection protection device, and relates to the technical field of excavator parts, the excavator forearm and bucket connection protection device comprises a bucket main body, the top of the bucket main body is provided with a connection assembly, the connection assembly is provided with a forearm main body, and the forearm main body is provided with a connecting rod. A mounting hole is formed in the small arm main body; a protection baffle is fixedly connected to the top of the bucket body, two limiting check blocks are fixedly connected to the bottom of the small arm body, and an oil pressure protection assembly is arranged between the small arm body and the bucket body. Through the arrangement of the connecting assembly, the rotating shaft is used for rotating at the connecting position, the two connecting bolts penetrate through the center of the rotating shaft, the bearing resistance and the connecting strength of the rotating shaft can be improved, the stability during excavation is guaranteed, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of excavator parts, in particular to a connection protection device between an excavator arm and a bucket. Background Art

[0002] An excavator is a heavy-duty construction machinery used for digging, reclaiming and moving soil, rocks and other materials. It usually consists of a chassis, hydraulic system, working device and cab. The excavator bucket is part of the excavator working device, used for digging, loading and moving soil, rocks, gravel and other materials. It usually consists of a bucket wall, bottom plate, blade and teeth.

[0003] The connection between the bucket and the forearm of the excavator is easily damaged during excavation. When the load is too large, the connection may break. At the same time, it is easy to be deformed by collision with the excavation site, which affects the excavation effect. At the same time, the maintenance cost of the excavator increases, resources are wasted, and work efficiency is reduced.

[0004] Therefore, it is urgent to provide a protection device for connecting the forearm and bucket of an excavator to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by the utility model is that the connection between the bucket of the excavator and the forearm is easily damaged during excavation. When the load-bearing force is too large, the connection may be broken. At the same time, it is easy to be deformed by collision with the excavation site, which affects the excavation effect. At the same time, the maintenance cost of the excavator is increased, resources are wasted, and work efficiency is reduced.

[0006] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an excavator arm and bucket connection protection device, comprising a bucket body, a connection assembly is arranged on the top of the bucket body, an arm body is arranged on the connection assembly, and a mounting hole is opened on the arm body;

[0007] The top of the bucket body is fixedly connected with a protective baffle, the bottom of the forearm body is fixedly connected with two limit blocks, and an oil pressure protection component is arranged between the forearm body and the bucket body.

[0008] The utility model is further configured as follows: the connecting assembly includes a mounting plate fixedly connected to the front and rear of the top of the bucket body, the two mounting plates are centrally rotatably connected with a rotating shaft, the forearm body is fixedly connected to the outer wall of the forearm body, the front and rear of the top of the bucket body are fixedly connected with fixing plates, the two fixing plates are threadedly connected with limiting bolts, and the two fixing plates are fixedly connected with protective frames.

[0009] Through the above technical solution, the bucket body is driven to rotate by the rotating shaft during the rotation process, and two limit bolts pass through the center of the rotating shaft, which can improve the load-bearing capacity and connection strength of the rotating shaft, ensure stability during excavation, and improve the service life of the equipment.

[0010] The utility model is further configured as follows: both of the two mounting plates are provided with shaft holes, and the rotating shaft passes through the center of the shaft hole.

[0011] Through the above technical solution, the rotating shaft can rotate at the center of the two mounting plates, so that the bucket body and the arm body can rotate relative to each other, so that the bucket body can realize the excavation function.

[0012] The utility model is further configured as follows: corresponding limiting holes are opened on the two rotating shafts, and the two limiting bolts are located at the centers of the limiting holes.

[0013] Through the above technical solution, the supporting strength of the rotating shaft can be improved by two limit bolts, thereby improving the load-bearing capacity of the bucket body and improving the stability during excavation.

[0014] The utility model is further configured as follows: the protective baffle is made of tungsten aluminum alloy.

[0015] Through the above technical solution, the protective baffle made of tungsten aluminum alloy can have greater hardness and strength, and can ensure that it will not be deformed when colliding with the excavation site, thereby protecting the connection.

[0016] The utility model is further configured as follows: the oil pressure protection assembly includes a first rotating support fixedly connected to the bucket body, a second rotating support fixedly connected to the arm body, and a hydraulic cylinder is rotatably connected between the first rotating support and the second rotating support.

[0017] Through the above technical solution, when the bucket body rotates, the hydraulic cylinder can buffer the rotation of the bucket body, further protecting the bucket body, saving maintenance costs and improving the use effect.

[0018] The utility model is further configured as follows: the first rotating support and the bucket body, and the second rotating support and the forearm body are all integrated structures.

[0019] Through the above technical solution, the first rotating support and the bucket body, and the second rotating support and the arm body have a strong connection strength, so that the hydraulic cylinder can have higher stability when buffering and have a better buffering effect.

[0020] The beneficial effects of the utility model are as follows:

[0021] 1. The utility model provides a connection assembly so that the connection part is rotated by a rotating shaft, and two connecting bolts penetrate the center of the rotating shaft, which can improve the load-bearing capacity and connection strength of the rotating shaft, ensure the stability during excavation, and improve the service life of the equipment;

[0022] 2. The utility model can protect the bucket body through the protective baffle and the limit block, which can not only prevent soil and stones from entering the connection, but also prevent the connection from colliding with the hard part of the excavation. The limit block can limit the rotation angle of the bucket body and protect it;

[0023] 3. The utility model provides an oil pressure protection component, which can buffer the rotation of the bucket body, further protect the bucket body, save maintenance costs, and improve the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the appearance diagram of the utility model;

[0025] Figure 2 It is a front view of the utility model;

[0026] Figure 3 It is a top view of the utility model;

[0027] Figure 4 for Figure 3 Cross-sectional view along the BB direction;

[0028] Figure 5 for Figure 2 A partial enlarged view of point A in the middle.

[0029] In the figure: 1. bucket body; 2. connecting assembly; 201. mounting plate; 202. rotating shaft; 203. fixing plate; 204. limiting bolt; 205. protective frame; 3. arm body; 4. mounting hole; 5. protective baffle; 6. limiting block; 7. oil pressure protection assembly; 701. first rotating support; 702. second rotating support; 703. hydraulic cylinder. DETAILED DESCRIPTION

[0030] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0031] See also Figure 1-Figure 5A device for connecting and protecting an excavator arm and a bucket comprises a bucket body 1, a connecting assembly 2 is arranged on the top of the bucket body 1, and the connecting assembly 2 comprises a mounting plate 201 fixedly connected to the front and rear of the top of the bucket body 1, a rotating shaft 202 is rotatably connected to the center of the two mounting plates 201, and an axial hole is opened on the two mounting plates 201, and the rotating shaft 202 passes through the center of the axial hole; so that the rotating shaft 202 can rotate at the center of the two mounting plates 201, thereby enabling the bucket body 1 and the arm body 3 to rotate relative to each other, so that the bucket body 1 can realize the excavation function; the arm body 3 is fixedly connected to the outer wall of the arm body 3, and the front and rear of the top of the bucket body 1 are fixedly connected to the fixing plates 203, and the two fixing plates 203 are threadedly connected with limited The two limiting bolts 204 are respectively provided with corresponding limiting holes on the two rotating shafts 202, and the two limiting bolts 204 are both located at the center of the limiting holes; the supporting strength of the rotating shaft 202 can be improved by the two limiting bolts 204, thereby improving the load-bearing capacity of the bucket body 1, and improving the stability during excavation; the two fixing plates 203 are both fixedly connected with the protective frame 205; during the rotation process, the rotating shaft 202 drives the bucket body 1 to rotate, and the two limiting bolts 204 penetrate the center of the rotating shaft 202, which can improve the load-bearing capacity and connection strength of the rotating shaft 202, ensure the stability during excavation, and improve the service life of the equipment; the connecting component 2 is provided with a forearm body 3, and the forearm body 3 is provided with a mounting hole 4;

[0032] like Figure 5 As shown, a protective baffle 5 is fixedly connected to the top of the bucket body 1, and the protective baffle 5 is made of tungsten-aluminum alloy; the protective baffle 5 made of tungsten-aluminum alloy can have strong hardness and strength, and can ensure that it will not be deformed when colliding with the excavation site, thereby protecting the connection; two limit blocks 6 are fixedly connected to the bottom of the arm body 3, and an oil pressure protection component 7 is arranged between the arm body 3 and the bucket body 1; the oil pressure protection component 7 includes a first rotating support 701 fixedly connected to the bucket body 1, and a second rotating support 702 is fixedly connected to the arm body 3, and the first rotating support 701 and the second rotating support 702 are fixedly connected A hydraulic cylinder 703 is rotatably connected between the movable supports 702; the first rotating support 701 and the bucket body 1, as well as the second rotating support 702 and the forearm body 3 are all integrated structures; this ensures that the first rotating support 701 and the bucket body 1, as well as the second rotating support 702 and the forearm body 3 have a strong connection strength, so that the hydraulic cylinder 703 can have a higher stability during buffering and has a better buffering effect; when the bucket body 1 rotates, the hydraulic cylinder 703 can buffer the rotation of the bucket body 1, further protect the bucket body 1, save maintenance costs, and improve the use effect.

[0033] When the utility model is in use, the arm body 3 drives the bucket body 1 to rotate, and during the rotation process, the bucket body 1 is driven to rotate by the rotating shaft 202. The two limit bolts 204 pass through the center of the rotating shaft 202, which can improve the load-bearing capacity and connection strength of the rotating shaft 202, ensure the stability during excavation, and improve the service life of the equipment. The protective baffle 5 has a protective function for the bucket body 1, which can not only prevent soil and stones from entering the connection, but also prevent the connection from colliding with the hard part of the excavation. The limit block 6 can limit the rotation angle of the bucket body 1 and protect it. When the bucket body 1 is rotating, the hydraulic cylinder 703 can buffer the rotation of the bucket body 1, further protecting the bucket body 1, saving maintenance costs and improving the use effect.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A protective device for connecting an excavator arm and a bucket, comprising a bucket body (1), characterized in that: A connecting assembly (2) is arranged on the top of the bucket body (1), a small arm body (3) is arranged on the connecting assembly (2), and a mounting hole (4) is opened on the small arm body (3); The top of the bucket body (1) is fixedly connected with a protective baffle (5), the bottom of the arm body (3) is fixedly connected with two limit blocks (6), and an oil pressure protection component (7) is provided between the arm body (3) and the bucket body (1); The connecting assembly (2) comprises a mounting plate (201) fixedly connected to the front and rear of the top of the bucket body (1); the two mounting plates (201) are centrally rotatably connected to a rotating shaft (202); the arm body (3) is fixedly connected to the outer wall of the arm body (3); the top of the bucket body (1) is fixedly connected to a fixing plate (203) at the front and rear; the two fixing plates (203) are threadedly connected to limit bolts (204); and the two fixing plates (203) are fixedly connected to a protective frame (205); The two mounting plates (201) are each provided with an axial hole, and the rotating shaft (202) passes through the center of the axial hole; The two rotating shafts (202) are each provided with a corresponding limiting hole, and the two limiting bolts (204) are each located at the center of the limiting hole; The oil pressure protection assembly (7) comprises a first rotating support (701) fixedly connected to the bucket body (1), a second rotating support (702) fixedly connected to the arm body (3), and a hydraulic cylinder (703) rotatably connected between the first rotating support (701) and the second rotating support (702).

2. The excavator arm and bucket connection protection device according to claim 1, characterized in that: The protective baffle (5) is made of tungsten-aluminum alloy.

3. The excavator arm and bucket connection protection device according to claim 1, characterized in that: The first rotating support (701) and the bucket body (1), as well as the second rotating support (702) and the forearm body (3) are all integrated structures.

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