Welding jig for rear axle of excavator

Abstract

The utility model relates to a welding jig for a rear axle of an excavator, which comprises a horizontally arranged bottom plate; the first supporting assembly is used for supporting the first bent bottom plate and the second bent bottom plate; the second supporting assembly is used for supporting the bending cover plate; the concentricity assembly is used for connecting the first vertical plate and the second vertical plate, so that the first hole in the first vertical plate and the second hole in the second vertical plate are concentrically arranged; the positioning pin is used for connecting the first vertical plate and the third vertical plate; and the movable cushion block assembly is arranged between the concentricity assembly and the first bending bottom plate and can move in the second direction, and after the movable cushion block assembly moves, a material taking gap is formed between the concentricity assembly and the first bending bottom plate. According to the excavator rear axle welding jig, the welding efficiency and precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding jigs, in particular to a welding jig for a rear axle of an excavator. Background Art

[0002] like Figure 1-2 As shown, the rear axle of the excavator includes the following components: a base, a first bent bottom plate, a second bent bottom plate, a first vertical plate, a second vertical plate, a third vertical plate and a bent cover plate, wherein the first vertical plate and the second vertical plate are arranged opposite to each other. In the prior art, when welding the rear axle of the excavator, it is necessary to assemble one component and weld another component at the same time, measure and draw lines, clamp and fix them, and then weld them. The welding efficiency is low, assembly errors are prone to occur, and there will be cumulative errors in drawing lines, resulting in defective products with welding errors. Utility Model Content

[0003] The embodiment of the present application provides an excavator rear axle welding jig, which solves the problem in the prior art that the excavator rear axle welding process needs to be assembled sequentially and then welded, resulting in low welding efficiency and prone to welding errors. A welding jig for the excavator rear axle is provided to improve the welding efficiency and accuracy.

[0004] In order to solve the above technical problems, the embodiment of the utility model provides a welding fixture for the rear axle of an excavator, the rear axle of the excavator comprises: a base, a first bent bottom plate, a second bent bottom plate, a first vertical plate, a second vertical plate, a third vertical plate and a bent cover plate, wherein the first vertical plate and the second vertical plate are arranged opposite to each other;

[0005] The excavator rear axle welding fixture comprises:

[0006] A bottom plate is arranged horizontally; a first supporting assembly is used to support the first bending bottom plate and the second bending bottom plate, so that the first bending bottom plate and the second bending bottom plate are supported to be spaced apart along a first direction;

[0007] A second supporting assembly, used for supporting the bent cover plate so that the bent cover plate is supported to be located above the first bent bottom plate and the second bent bottom plate;

[0008] A concentricity assembly for connecting the first vertical plate and the second vertical plate so that the first hole on the first vertical plate is concentrically arranged with the second hole on the second vertical plate;

[0009] A positioning pin, used to connect the first vertical board and the third vertical board so that the third vertical board is located on one side of the first vertical board and is closely arranged;

[0010] The movable pad block assembly is respectively arranged between the concentricity assembly and the first bending bottom plate and can move along the second direction. When the movable pad block assembly moves, a material taking gap is formed between the concentricity assembly and the first bending bottom plate.

[0011] In one embodiment of the present utility model, the first support assembly of the present application includes:

[0012] A first fixed pad, which is horizontally fixed to the top of the bottom plate, and whose top surface shape matches the shape of the base, and is used to place the base and support the rear end of the first bent bottom plate;

[0013] A first support member, which is disposed on the top of the bottom plate and on one side of the first fixed pad along the first direction, and the first support member is used to support the first bent bottom plate;

[0014] The second support member is arranged on the top of the bottom plate and on one side of the first support member block along the first direction, and the second support member is used to support the second bent bottom plate.

[0015] In one embodiment of the present utility model, the second support assembly of the present application includes:

[0016] A second fixed pad, which is arranged on the top of the bottom plate, and the shape of its top surface matches the shape of the base, and the second fixed pad is used to place the base and support the bent cover plate;

[0017] A third support member is disposed on the top of the bottom plate and on one side of the second support member along the first direction, and the third support member is used to support the end of the bent cover plate.

[0018] In the above embodiment of the utility model, the third support member of the present application includes:

[0019] Two sets of vertical plates, which are arranged on the top of the bottom plate, and the two sets of vertical plates are arranged at intervals on both sides of the bottom plate along the second direction, and the vertical plates are used to place the ends of the bent cover plate, so that the bent cover plate can be supported to the top of the first bent bottom plate and the second bent bottom plate;

[0020] A connecting plate is connected to the two sets of vertical plates.

[0021] In one embodiment of the present utility model, the concentricity assembly of the present application includes:

[0022] a fourth support member, which is disposed on the top of the bottom plate;

[0023] A pin rod axially penetrates the first hole and the second hole, and is supported on the fourth support member at both ends of the pin rod passing through the first hole and the second hole.

[0024] In one embodiment of the utility model, the concentricity assembly of the present application includes: a limiting groove, which is sleeved on the pin rod and is located between the first vertical plate and the second vertical plate to abut against them.

[0025] In one embodiment of the present invention, it includes: a first fixed fence, which is arranged on one side of the first fixed pad along the first direction.

[0026] In one embodiment of the present invention, the movable pad block assembly of the present application includes: a first movable pad block, which is arranged between the first fixed guardrail and the first bent bottom plate along the second direction.

[0027] In one embodiment of the present utility model, the movable pad assembly of the present application includes: a second movable pad, which is arranged between the first support member and the second bent bottom plate along the second direction.

[0028] In one embodiment of the present invention, it includes: a positioning pin, which is axially inserted into the third hole and the fourth hole of the first vertical plate and the third vertical plate, and passes through both ends of the third hole and the fourth hole.

[0029] In one embodiment of the utility model, it includes: a second fixed fence, which is arranged on the top of the bottom plate.

[0030] In one embodiment of the utility model, it includes: a third fixed fence, which is arranged on one side of the second support member along the second direction and abuts against one side of the second bent bottom plate along the second direction.

[0031] The above technical solution of the utility model has at least the following advantages compared with the prior art:

[0032] The excavator rear axle welding jig described in the utility model includes a base plate, a first support assembly, a second support assembly, a concentricity assembly, a movable pad assembly and a positioning pin assembly. The base plate is horizontally arranged and used to connect other components of the welding jig; the first support assembly is used to place the base 1 of the excavator rear axle and support the first bending base plate and the second bending base plate of the excavator rear axle; the second support assembly is used for the base 2 of the excavator rear axle and supports the bending cover plate; the concentricity assembly is used to make the first vertical plate and the second vertical plate of the excavator rear axle concentrically arranged; the movable pad assembly can be moved along the second direction so that there is a material taking gap between the excavator rear axle and the excavator rear axle welding jig of the present application, and the material taking gap can facilitate the removal of the excavator rear axle after the welding of the various components of the excavator rear axle is completed; the positioning pin assembly is used to connect the first vertical plate and the third vertical plate of the excavator rear axle. The excavator rear axle welding jig described in the utility model supports and limits the various components of the excavator rear axle in the welding state, thereby improving the efficiency and accuracy of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to make the content of the utility model easier to understand, the utility model is further described in detail according to the specific embodiments of the utility model in combination with the accompanying drawings, wherein

[0034] Figure 1 This is a structural schematic diagram of the rear axle of an excavator that needs to be welded in a preferred embodiment of the utility model from a first viewing angle;

[0035] Figure 2 It is a structural schematic diagram of the rear axle of an excavator that needs to be welded in a preferred embodiment of the utility model from a second viewing angle;

[0036] Figure 3 It is a structural schematic diagram of the excavator rear axle welding fixture in the preferred embodiment of the utility model.

[0037] Description of the accompanying drawings: 1000, bottom plate; 110, first fixed pad; 120, first support member; 130, second support member; 210, second fixed pad; 220, third support member; 221, vertical plate; 222, connecting plate; 310, fourth support member; 311, supporting groove; 320, pin rod; 330, limiting groove; 410, first movable pad; 420, second movable pad; 510, third support member; A fixed backing rail; 520, a second fixed backing rail; 530, a third fixed backing rail; 600, a positioning pin; 10, a base; 20, a first bent bottom plate; 21, a first splicing hole; 30, a second bent bottom plate; 31, a second splicing hole; 40, a first vertical plate; 41, a first hole; 42, a third hole; 50, a second vertical plate; 51, a second hole; 60, a third vertical plate; 61, a fourth hole; 70, a bent cover plate; 71, a splicing interface. DETAILED DESCRIPTION

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0039] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings in the specification and specific trial methods.

[0040] Embodiment 1

[0041] like Figure 1-2 As shown, the rear axle of the excavator includes the following elements: a base 10, a first bent bottom plate 20, a second bent bottom plate 30, a first vertical plate 40, a second vertical plate 50, a third vertical plate 60 and a bent cover plate 70, wherein the first vertical plate 40 and the second vertical plate 50 are arranged opposite to each other, and the above elements are welded through a welding process to form the rear axle of the excavator.

[0042] The utility model embodiment provides a method for assisting the welding of the above components to form an excavator rear axle, such as Figure 3 Shown, including

[0043] The present application limits the rear axle of the excavator by using a first support assembly, a second support assembly, a concentricity assembly, and a movable pad assembly, so that the rear axle of the excavator is fixed on the welding fixture of the present application, thereby improving the efficiency and accuracy of the welding of the rear axle of the excavator; the welded rear axle of the excavator is taken away by the positioning pin 600, which is convenient and quick, thereby improving the efficiency of the welding work.

[0044] Excavator rear axle includes, refer to Figure 1 As shown, an embodiment of the utility model discloses an excavator rear axle welding jig, comprising: a horizontally arranged base plate 1000, a first support assembly, which is used to place the base 10 and support the first bent base plate 20 and the second bent base plate 30; a second support assembly, which is used to place the base 10 and support the bent cover plate 70; a concentricity assembly, which is used to make the first vertical plate 40 and the second vertical plate 50 concentrically arranged; a movable pad assembly, which can be moved along the second direction so that there is a material removal gap between the excavator rear axle and the excavator rear axle welding jig of the present application; a positioning pin 600, which is used to connect the first vertical plate 40 and the third vertical plate 60.

[0045] Specifically, the first support assembly includes: a first fixed cushion block 110 , a first support member 120 , and a second support member 130 .

[0046] Furthermore, the first fixed pad 110 is horizontally arranged on the top of the base plate 1000 along the second direction, and the shape of the first fixed pad 110 matches the base 10, which is used to place the base 10 and support one end of the first bent base plate 20, so that there is a welding seam between the base 10 and the first bent base plate 20, so that welding can be performed; the first support member 120 is arranged on one side of the first fixed pad 110 along the first direction, and the two groups of first support members 120 are respectively arranged at intervals along the second direction, which are used to support one end of the first bent base plate 20; the second support member 130 is arranged on one side of the first fixed pad 110 along the first direction, and the second support members 130 are arranged at intervals along the first direction, which are used to support the second bent base plate 30.

[0047] Specifically, the second supporting assembly includes: a second fixed cushion block 210 and a third supporting member 220 .

[0048] Furthermore, a second fixed pad 210 is horizontally arranged at the top of the base plate 1000 along the second direction, and the shape of the second fixed pad 210 matches the base 10, and is used to place the base 10 and support one end of the bending cover plate 70, so that there is a welding seam between the bending cover plate 70 and the first bending base plate 20, so that welding can be achieved; the third support member 220 is composed of two groups of vertical plates 221 and a connecting plate 222, the vertical plates 221 are arranged at one end of the second support member 130 along the first direction, and the two groups of vertical plates 221 are spaced apart along the second direction; the connecting plate 222 is connected to the two groups of vertical plates 221; the third support member 220 is used to support one end of the bending cover plate 70, so that the bending cover plate 70 is supported above the first bending base plate 20 and the second bending base plate 30, so that there is a welding seam between the second bending base plate 30 and the bending cover plate 70, so that welding can be achieved.

[0049] Specifically, the concentricity component includes: a fourth support member 310 , a pin rod 320 , and a limiting groove 330 .

[0050] Furthermore, the first vertical plate 40 and the second vertical plate 50 are penetrated in the first splicing hole 21 and the second splicing hole 31 along the first direction, the pin rod 320 is axially penetrated in the first hole 41 and the second hole 51, and passes through the two ends of the first hole 41 and the second hole 51, and the two ends of the pin rod 320 are supported in the support groove 311 of the fourth support member 310, so that the first vertical plate 40 and the second vertical plate 50 are concentrically arranged; the fourth support member 310 is arranged at intervals on the top of the bottom plate 1000 along the second direction, and the fourth support member 310 is provided with a support groove 311, and the support groove 311 matches the structure of the pin rod 320, so that the pin rod 320 can be stably supported to the fourth support member 310, so that there is a welding seam between the first vertical plate 40 and the second vertical plate 50 and the first bent bottom plate 20 and the second bent bottom plate 30, so that welding can be performed.

[0051] Furthermore, the limiting groove 330 is sleeved on the pin rod 320, and is located between the first vertical plate 40 and the second vertical plate 50 to abut against each other. It is used to limit the first vertical plate 40 and the second vertical plate 50 to prevent the first vertical plate 40 and the second vertical plate 50 from shifting inward, and to allow a welding seam to be formed between the first vertical plate 40 and the second vertical plate 50 and the bending cover plate 70 so that welding can be performed.

[0052] Specifically, two groups of first fixed guardrails 510 are spaced apart along the second direction on one side of the first fixed cushion block 110 and are closely attached to the first fixed cushion block 110 to fix the second movable cushion block 420 to prevent it from falling.

[0053] Specifically, the movable pad assembly includes: a first movable pad 410 and a second movable pad 420 .

[0054] Furthermore, the first movable pad 410 is placed above the base 10, and the two groups of first movable pads 410 are respectively inserted between the first fixed guardrail 510 and the first bent bottom plate 20 at intervals along the second direction, and the first movable pad 410 can move along the second direction, so that there is a material-taking gap between the first fixed guardrail 510 and the first bent bottom plate 20, so that the welded rear axle of the excavator can be removed; the second movable pad 420 is placed above the base 10, and the two groups of second movable pads 420 are respectively inserted between the first support member 120 and the bent cover plate 70 at intervals along the second direction, and the second movable pad 420 can move along the second direction, so that there is a material-taking gap between the first support member 120 and the bent cover plate 70, so that the welded rear axle of the excavator can be removed.

[0055] Specifically, the positioning pin 600 is axially penetrated in the third hole 42 and the fourth hole 61 and passes through both ends of the third hole 42 and the fourth hole 61, and is used to connect the first vertical plate 40 and the third vertical plate 60, so that the third vertical plate 60 fits on one side of the first vertical plate 40, so that they can be welded.

[0056] Specifically, the second fixed fence 520 is disposed on the top of the bottom plate 1000 and is respectively attached to one side of the first fixed cushion block 110 and the second fixed cushion block 210 to limit the base 10 and prevent it from deviating in the second direction.

[0057] Specifically, the third fixed fence 530 is disposed on the bottom plate 1000 and is closely disposed on one side of the third support member 220 , and is used to limit the second bent bottom plate 30 and the bent cover plate 70 to prevent them from deviating in the second direction.

[0058] Specifically, when the excavator rear axle welding fixture of the present application is used in the welding process, the implementation process is as follows: the base 10 is placed on the first fixed pad 110 and the second fixed pad 210 respectively; one end of the first bent bottom plate 20 is placed on the base corresponding to the first fixed pad 110, and one end is placed on the second support member 130; the second bent bottom plate 30 is placed on the second support member 130; then the first vertical plate 40 and the second vertical plate 50 are inserted into the first splicing hole 21 and the second splicing hole 31 along the first direction, and the pin rod 320 is axially connected to the first splicing hole 21 and the second splicing hole 31. The pin 320 is passed through the first hole 41 and the second hole 51, and both ends pass through the first hole 41 and the second hole 51, and both ends of the pin rod 320 are placed in the support groove 311 of the fourth support member 310; one end of the bent cover plate 70 is placed on the base 10 corresponding to the second fixed pad 210, and the other end is placed above the vertical plate 221 of the third support member 220, and the splicing interface 71 is spliced ​​to the first vertical plate 40 and the second vertical plate 50; the positioning pin 600 is passed through the third hole 42 and the fourth hole 61, and both ends of the positioning pin pass through the third hole 42 and the fourth hole 61.

[0059] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0060] The excavator rear axle welding jig described in the utility model comprises a base plate, a first support assembly, a second support assembly, a concentricity assembly, a movable pad assembly and a positioning pin assembly, wherein the base plate is horizontally arranged and used to connect other components of the welding jig; the first support assembly is used to place the base one of the excavator rear axle and support the first bent base plate and the second bent base plate of the excavator rear axle; the second support assembly is used for the base two of the excavator rear axle and supports the bent cover plate; the concentricity assembly is used to make the first vertical plate and the second vertical plate of the excavator rear axle concentrically arranged; the movable pad assembly can be moved along the second direction so that there is a material removal gap between the excavator rear axle and the excavator rear axle welding jig of the present application, and the material removal gap can facilitate the removal of the excavator rear axle after the welding of various components of the excavator rear axle is completed; the positioning pin assembly is used to connect the first vertical plate and the third vertical plate of the excavator rear axle. The excavator rear axle welding fixture described in the utility model supports and limits various components of the excavator rear axle in a welding state, eliminating the steps of sequential assembly, avoiding errors in drawing lines, and improving welding efficiency; and the welded excavator rear axle is taken away by a movable pad block assembly, which is convenient and quick, thereby improving the efficiency of the excavator rear axle welding work.

[0061] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. A welding fixture for an excavator rear axle, the excavator rear axle comprising a base, a first bent bottom plate, a second bent bottom plate, a first vertical plate, a second vertical plate, a third vertical plate and a bent cover plate, wherein the first vertical plate and the second vertical plate are arranged opposite to each other, characterized in that: The excavator rear axle welding fixture includes: Base plate, set horizontally; A first supporting assembly, used for supporting the first bending bottom plate and the second bending bottom plate, so that the first bending bottom plate and the second bending bottom plate are supported to be spaced apart along a first direction; A second supporting assembly, used for supporting the bent cover plate so that the bent cover plate is supported to be located above the first bent bottom plate and the second bent bottom plate; A concentricity assembly for connecting the first vertical plate and the second vertical plate so that the first hole on the first vertical plate is concentrically arranged with the second hole on the second vertical plate; A positioning pin, used to connect the first vertical board and the third vertical board so that the third vertical board is located on one side of the first vertical board and is closely arranged; The movable pad block assembly is respectively arranged between the concentricity assembly and the first bending bottom plate and can move along the second direction. When the movable pad block assembly moves, a material taking gap is formed between the concentricity assembly and the first bending bottom plate.

2. The excavator rear axle welding jig according to claim 1, characterized in that: The first support assembly comprises: A first fixed pad, which is horizontally fixed to the top of the bottom plate, and whose top surface shape matches the shape of the base, and is used to place the base and support the first bent bottom plate; A first support member, which is disposed on the top of the bottom plate and on one side of the first fixed pad along the first direction, and the first support member is used to support the first bent bottom plate; The second support member is arranged on the top of the bottom plate and on one side of the first support member block along the first direction, and the second support member is used to support the second bent bottom plate.

3. The excavator rear axle welding jig according to claim 2, characterized in that: The second supporting assembly comprises: A second fixed pad, which is arranged on the top of the bottom plate, and the shape of its top surface matches the shape of the base, and the second fixed pad is used to place the base and support the bent cover plate; A third support member is arranged on the top of the bottom plate and on one side of the second support member along the first direction, and the third support member is used to support the end of the bent cover plate.

4. The excavator rear axle welding jig according to claim 3, characterized in that: The third support member comprises: Two sets of vertical plates, which are arranged on the top of the bottom plate, and the two sets of vertical plates are arranged at intervals on both sides of the bottom plate along the second direction, and the vertical plates are used to place the ends of the bent cover plate, so that the bent cover plate is supported to the top of the first bent bottom plate and the second bent bottom plate; A connecting plate is connected to the two sets of vertical plates.

5. The excavator rear axle welding jig according to claim 1, characterized in that: The concentricity assembly comprises: a fourth support member, which is disposed on the top of the bottom plate; A pin rod axially penetrates the first hole and the second hole, and is supported on the fourth support member at both ends of the pin rod passing through the first hole and the second hole.

6. The excavator rear axle welding jig according to claim 5, characterized in that: The fourth support member is provided with a support groove, wherein the support groove matches the structure of the pin rod.

7. The excavator rear axle welding jig according to claim 5, characterized in that: The concentricity component also includes, The limiting groove is sleeved on the pin rod and is located between the first vertical plate and the second vertical plate to abut against the first vertical plate.

8. The excavator rear axle welding jig according to claim 2, characterized in that: Also includes: The first fixed fence is arranged on one side of the first fixed cushion block along the first direction.

9. The excavator rear axle welding jig according to claim 8, characterized in that: The movable pad assembly comprises: A first movable cushion block is arranged between the first fixed fence and the first bent bottom plate along a second direction; The second movable cushion block is arranged between the first supporting member and the second bending bottom plate along the second direction.

10. The excavator rear axle welding jig according to claim 1, characterized in that: The positioning pin is axially arranged in the third hole of the first vertical plate and the fourth hole of the third vertical plate, and passes through both ends of the third hole and the fourth hole.

Images