Welding jig for front axle of excavator

Abstract

The utility model relates to a welding jig for a front axle of an excavator. The plurality of fixed leaning grids are vertically arranged on the base and are used for supporting and positioning a workpiece to be welded; the multiple adjustable leaning grids are vertically arranged on the base, and the tops of the adjustable leaning grids are inserted into a to-be-welded workpiece in a penetrating mode to position the to-be-welded workpiece; the two ends of the first positioning pin rod are mounted above the base through the first pin rod base; the two ends of the second positioning pin rod are installed above the base through the second pin rod base and located below the first positioning pin rod. According to the utility model, positioning is carried out by virtue of the positioning pin rod and the leaning grid, errors caused by manual measurement and line drawing are also eliminated, a mistake-proofing function is also realized, multiple functions are integrated, and meanwhile, the manufacturing cost is also saved.

Description

Technical Field

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

[0002] When welding the front axle of an excavator, it is necessary to assemble one workpiece and then weld another workpiece at the same time. At the same time, it is necessary to measure, draw lines, clamp and fix them before welding. This reduces the assembly efficiency and is prone to assembly errors. If lines are drawn, there will be cumulative errors. Even if the assembly and welding are completed, the product will be a defective product and cannot be used. Utility Model Content

[0003] To this end, the technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a welding fixture for the front axle of an excavator, which mainly relies on positioning pins and a guardrail for positioning, eliminates the errors caused by manual measurement and drawing, and has an error-proofing function, integrating multiple functions into one, while also saving manufacturing costs.

[0004] In order to solve the above technical problems, the utility model provides a welding fixture for the front axle of an excavator, comprising:

[0005] Base;

[0006] A fixed grid, including a plurality of grids, vertically arranged on the base for supporting and positioning the workpiece to be welded;

[0007] The adjustable backing grids include a plurality of grids which are vertically arranged on the base, and the tops of the adjustable backing grids are inserted into the interior of the workpiece to be welded to position it;

[0008] A first positioning pin rod, both ends of which are mounted above the base through a first pin rod base;

[0009] The second positioning pin rod has two ends installed above the base through a second pin rod base and is located below the first positioning pin rod.

[0010] In one embodiment of the utility model, the fixed backing grid includes a first fixed backing grid, a second fixed backing grid, a third fixed backing grid, a fourth fixed backing grid, a fifth fixed backing grid, a sixth fixed backing grid, a seventh fixed backing grid and an eighth fixed backing grid, and the tops of the first fixed backing grid, the third fixed backing grid and the fourth fixed backing grid are provided with a first limit block to support the bottom of the workpiece to be welded and limit the side at the same time; the second fixed backing grid, the seventh fixed backing grid and the eighth fixed backing grid are used to support the bottom of the workpiece to be welded; the fifth fixed backing grid and the sixth fixed backing grid are used to limit the side of the workpiece to be welded.

[0011] In one embodiment of the utility model, a second limit stop is provided at the end of the fifth fixed guardrail, so that the fifth fixed guardrail can limit the two side surfaces of the workpiece to be welded at the same time.

[0012] In one embodiment of the utility model, a first reinforcing connecting plate is provided on the side of the fixed guardrail.

[0013] In one embodiment of the present invention, a plurality of positioning rings are further provided on the outer side of the first positioning pin rod, which are used to limit the workpiece to be welded in the axial direction of the first positioning pin rod.

[0014] In one embodiment of the present invention, the positioning ring is semicircular and is buckled onto the first positioning pin rod.

[0015] In one embodiment of the present invention, a limiting sleeve is provided on the outer side of the second positioning pin rod, and the length of the limiting sleeve is smaller than the length of the second positioning pin rod.

[0016] In one embodiment of the present invention, the ends of the first pin rod base and the second pin rod base are both provided with limiting grooves.

[0017] In one embodiment of the utility model, the adjustable fence is a screw rod, and the bottom of the screw rod is threadedly connected to the base.

[0018] In one embodiment of the present invention, second reinforcing connecting plates are disposed on the sides of the first pin rod base and the second pin rod base.

[0019] The above technical solution of the utility model has the following advantages compared with the prior art:

[0020] The utility model discloses a welding jig for the front axle of an excavator, which allows welding personnel to assemble quickly without the need for additional tooling or clamps, and can quickly assemble and weld without the need for measuring, drawing lines, or marking. This welding jig saves assembly time and manual labor, and can ensure the accuracy of assembly. It saves time, manpower, and financial resources, and ensures the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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

[0022] Figure 1 It is a structural schematic diagram of a welding fixture for the front axle of an excavator in a preferred embodiment of the utility model;

[0023] Figure 2 yes Figure 1The schematic diagram of the structure of the excavator front axle welding fixture and the workpiece to be welded after being assembled;

[0024] Explanation of the reference numerals in the drawings in the specification: 1. base; 2. fixed guard; 21. first fixed guard; 22. second fixed guard; 23. third fixed guard; 24. fourth fixed guard; 25. fifth fixed guard; 251. second limit stop; 26. sixth fixed guard; 27. seventh fixed guard; 28. eighth fixed guard; 3. adjustable guard; 4. first positioning pin; 5. first pin base; 6. second positioning pin; 7. second pin base. DETAILED DESCRIPTION

[0025] 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.

[0026] Reference Figure 1 As shown, the utility model describes an excavator front axle welding fixture, comprising: a base 1; a fixed backrest 2, including a plurality of fixed backrests, vertically arranged on the base 1 for supporting and positioning the workpiece to be welded; an adjustable backrest 3, including a plurality of fixed backrests, vertically arranged on the base 1, the top of the adjustable backrest 3 is inserted into the interior of the workpiece to be welded to position it; a first positioning pin rod 4, both ends of which are installed above the base 1 through the first pin rod base 5; a second positioning pin rod 6, both ends of which are installed above the base 1 through the second pin rod base 7, and are located below the first positioning pin rod 4.

[0027] The excavator front axle welding jig based on the above structure allows welders to assemble quickly without the need for additional tooling and clamps, nor does it require drawing lines to measure dimensions. Using this welding jig not only saves assembly time and manual labor, but also ensures the accuracy of assembly, which is truly both time-saving and labor-saving.

[0028] Preferably, the fixed guard 2 includes a first fixed guard 21, a second fixed guard 22, a third fixed guard 23, a fourth fixed guard 24, a fifth fixed guard 25, a sixth fixed guard 26, a seventh fixed guard 27 and an eighth fixed guard 28. The tops of the first fixed guard 21, the third fixed guard 23 and the fourth fixed guard 24 are provided with a first limit block 211 to support the bottom of the workpiece to be welded and limit the side at the same time; the second fixed guard 22, the seventh fixed guard 27 and the eighth fixed guard 28 are used to support the bottom of the workpiece to be welded; the fifth fixed guard 25 and the sixth fixed guard 26 are used to limit the side of the workpiece to be welded.

[0029] Furthermore, a second limiting block 251 is provided at the end of the fifth fixed guardrail 25, so that the fifth fixed guardrail 25 can limit the two side surfaces of the workpiece to be welded at the same time.

[0030] Preferably, a first reinforcing connecting plate 11 is provided on the side of the fixed guardrail 2. The first reinforcing connecting plate 11 can enhance the connection strength between the fixed guardrail 2 and the base 1, so that the fixed guardrail 2 does not deflect, thereby ensuring the accuracy of workpiece positioning.

[0031] In this embodiment, a plurality of positioning rings 8 are further provided on the outer side of the first positioning pin rod 4 , which are used to limit the position of the workpiece to be welded in the axial direction of the first positioning pin rod 4 .

[0032] Preferably, the positioning ring 8 is semicircular and is buckled on the first positioning pin rod 4. The semicircular positioning ring 8 is convenient for fast buckling with the first positioning pin rod 4 and removing from the first positioning pin rod 4.

[0033] Furthermore, a limiting sleeve 9 is provided on the outer side of the second positioning pin rod 6, and the length of the limiting sleeve 9 is less than the length of the second positioning pin rod 6. The limiting sleeve 9 is installed on the outer side of the second positioning pin rod 6, and after the limiting sleeve 9 is installed, the workpieces on both sides of the second positioning pin rod 6 can be kept within a certain distance.

[0034] Preferably, the ends of the first pin base 5 and the second pin base 7 are both provided with limiting grooves, which can not only limit the ends of the first positioning pin 4 and the second positioning pin 6, but also prevent the first positioning pin 4 and the second positioning pin 6 from slipping off their respective bases.

[0035] In this embodiment, the adjustable fence 3 is a screw rod, and the bottom of the screw rod is threadedly connected to the base 1. When the screw rod is used to position the workpiece, the top of the screw rod is inserted into the workpiece to achieve the positioning of the workpiece; when the height of the screw rod needs to be adjusted, the height of the screw rod on the base 1 can be adjusted by rotating the screw rod.

[0036] Furthermore, the sides of the first pin base 5 and the second pin base 7 are both provided with a second reinforcing connecting plate 10. The design of the second reinforcing connecting plate 10 strengthens the connection strength between the first pin base 5 and the second pin base 7 and the base 1, avoids the first pin base 5 and the second pin base 7 from being loosely installed, and ensures the accuracy of positioning of the first positioning pin 4 and the second positioning pin 6.

[0037] The assembly sequence of the utility model product is as follows: first fix the fixed guardrail 2, the first pin rod base 5, the second pin rod base 7 and the adjustable guardrail 3 on the base 1, then place the two workpieces to be welded on the adjustable guardrail 3 and fix the second fixed guardrail 22 tightly, then pass the second positioning pin rod 6 through the two workpieces to ensure coaxiality, then place one end of the bent workpiece on the fourth fixed guardrail 24 and the sixth fixed guardrail 26, and one end close to the fifth fixed guardrail 25 and the sixth fixed guardrail 26, then place the large flat piece on the two vertical base pieces and close to the large bent piece, then put the hole piece on the first positioning pin rod 4 according to the order of the drawing, and put in the semicircular positioning ring 8 at the same time, then insert the workpiece into the workpiece groove, and put the two ends of the first pin rod into the limiting groove of the first pin rod base 5, so that the workpiece is assembled. Figure 2 As shown, after the excavator front axle is assembled, the next welding process can be carried out.

[0038] In the present embodiment, the jig is mainly positioned by the first positioning pin rod 4, the fixed guardrail 2 and the adjustable guardrail 3, which also eliminates the errors caused by manual measurement and drawing, and also has an error-proofing function, avoiding the problem of being unable to assemble due to splicing errors.

[0039] 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 the front axle of an excavator, characterized by: include: Base; A fixed grid, including a plurality of grids, vertically arranged on the base for supporting and positioning the workpiece to be welded; The adjustable backing grids include a plurality of grids which are vertically arranged on the base, and the tops of the adjustable backing grids are inserted into the interior of the workpiece to be welded to position it; A first positioning pin rod, both ends of which are mounted above the base through a first pin rod base; The second positioning pin rod has two ends installed above the base through a second pin rod base and is located below the first positioning pin rod.

2. The excavator front axle welding jig according to claim 1, characterized in that: The fixed backing grid includes a first fixed backing grid, a second fixed backing grid, a third fixed backing grid, a fourth fixed backing grid, a fifth fixed backing grid, a sixth fixed backing grid, a seventh fixed backing grid and an eighth fixed backing grid. The tops of the first fixed backing grid, the third fixed backing grid and the fourth fixed backing grid are provided with a first limit block to support the bottom of the workpiece to be welded and limit the side surface at the same time; the second fixed backing grid, the seventh fixed backing grid and the eighth fixed backing grid are used to support the bottom of the workpiece to be welded; the fifth fixed backing grid and the sixth fixed backing grid are used to limit the side surface of the workpiece to be welded.

3. The excavator front axle welding jig according to claim 2, characterized in that: A second limiting block is disposed at the end of the fifth fixed guardrail, so that the fifth fixed guardrail can limit the two side surfaces of the workpiece to be welded at the same time.

4. The excavator front axle welding jig according to claim 2, characterized in that: A first reinforcing connecting plate is provided on the side of the fixed fence.

5. The excavator front axle welding jig according to claim 1, characterized in that: A plurality of positioning rings are also provided on the outer side of the first positioning pin rod, which are used to limit the position of the workpiece to be welded in the axial direction of the first positioning pin rod.

6. The excavator front axle welding jig according to claim 5, characterized in that: The positioning ring is semicircular and is buckled on the first positioning pin rod.

7. The excavator front axle welding jig according to claim 1, characterized in that: A limiting sleeve is disposed on the outer side of the second positioning pin rod, and the length of the limiting sleeve is smaller than the length of the second positioning pin rod.

8. The excavator front axle welding jig according to claim 1, characterized in that: The ends of the first pin rod base and the second pin rod base are both provided with limiting grooves.

9. The excavator front axle welding jig according to claim 1, characterized in that: The adjustable fence is a screw rod, and the bottom of the screw rod is threadedly connected to the base.

10. The excavator front axle welding jig according to claim 1, characterized in that: Second reinforcing connecting plates are disposed on the sides of the first pin rod base and the second pin rod base.

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