Welding and assembling jig for power arm of excavator

Abstract

The utility model relates to the technical field of excavator power arm production, and provides a welding and assembling jig for an excavator power arm. The welding device comprises a bottom plate and a welding assembly connected to the top of the bottom plate. A first positioning pin rod and a second positioning pin rod of the welding assembly extend in the Y direction and are located above the bottom plate. The base fixing leaning grid assembly is arranged at the top of the bottom plate and used for supporting and limiting the base. The base side leaning grid is arranged at the top of the bottom plate and abuts against one end of the base and one end of the side plate; the first fixed leaning grid is arranged at the top of the bottom plate; the front fixed leaning grid and the rear movable leaning grid abut against the outer walls of the two side plates and the outer walls of the two bases respectively, and the front fixed leaning grid is arranged on the top of the bottom plate. The driving part of the rear movable leaning grid drives the limiting plate to move on the bottom plate in the X direction and abut against the outer wall of the side plate. And the second fixed leaning grid is arranged at the top of the bottom plate. According to the utility model, not only are working hours saved, but also manpower and financial resources are saved, and the yield is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of production of excavator power arms, in particular to a welding and assembling jig for excavator power arms. Background Art

[0002] The excavator power arm includes multiple parts, such as two bases, two side plates, large ears, small ears, a first top plate, a second top plate, a connecting plate, and multiple rings. These multiple parts need to be welded together when assembling the excavator power arm. The existing technology uses manual welding, which requires assembly while welding, and at the same time, measurement, drawing, clamping and fixing before welding. This is inefficient and prone to assembly errors; if the lines are drawn, there will be cumulative errors, resulting in low welding accuracy. Utility Model Content

[0003] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0004] In order to solve the above technical problems, the utility model provides an excavator power arm welding assembly jig, comprising:

[0005] Base plate, set horizontally;

[0006] A welding assembly is connected to the top of the bottom plate; the welding assembly includes a first positioning pin rod, a second positioning pin rod, two base fixed grid assemblies, two base side grids, a first fixed grid, a front fixed grid, a rear movable grid and a second fixed grid; the first positioning pin rod and the second positioning pin rod extend along the Y direction and are located above the bottom plate; the first positioning pin rod is inserted in the big ear, the small ear and the ring, and the second positioning pin rod is inserted in the big ear, the side plate and the ring; the base fixed grid assembly is arranged on the top of the bottom plate and corresponds to the base one by one, and the base fixed grid assembly is used to support the limit The base is positioned; the side guard of the base is arranged at the top of the bottom plate and corresponds to the base one by one, and the side guard of the base is abutted against the base and one end of the side plate; the first fixed guard is arranged at the top of the bottom plate, and is used to support and limit the first top plate and the small ears; the front fixed guard and the rear movable guard are respectively abutted against the outer walls of the two side plates and the two bases, and the front fixed guard is arranged at the top of the bottom plate; the rear movable guard includes a limiting plate and a driving part, and the driving part drives the limiting plate to move along the X direction on the bottom plate and abut against the outer walls of the side plate; the second fixed guard is arranged at the top of the bottom plate, and is used to support and limit the second top plate and the connecting plate.

[0007] In one embodiment of the utility model, the first fixed guard includes a first limit member and a second limit member arranged at intervals along the X direction, and the first limit member and the second limit member extend in the Y direction respectively; a contoured groove is provided on the top of the first limit member, which is used to support the front side of the limited first top plate; a contoured groove and a clamping groove are provided on the second limit member, and the contoured groove of the second limit member is used to support the rear side of the limited first top plate; two adjustment members that can be lifted up and down are provided in the clamping groove, and the lifting of the two adjustment members is used to support the front side and the small ears of the limited first top plate.

[0008] In one embodiment of the utility model, the contoured groove of the first limiting member has two surfaces, which respectively abut against the lower surface of the first top plate and the side wall of the first top plate; the contoured groove of the second limiting member has two surfaces, which respectively abut against the lower surface of the first top plate and the side wall of the first top plate; the first fixed guard also includes a first U-shaped clip, which is clamped on the side wall of the first limiting member and the side wall of the big ear.

[0009] In an embodiment of the present invention, the adjusting member is vertically arranged and the bottom end thereof is threadedly connected to the second limiting member.

[0010] In one embodiment of the utility model, the base side guard includes a fixed block and a limit block. The fixed block is arranged on the top of the bottom plate and abuts against the end surface of the base; the limit block abuts between the inner wall of the fixed block and the end surface of the side plate.

[0011] In one embodiment of the utility model, the base fixing grid assembly includes a plurality of base fixing grids spaced apart along the Y direction, and the base fixing grids are provided with contoured grooves matching the shape of the lower surface of the base.

[0012] In one embodiment of the utility model, the present application also includes two support assemblies, which are respectively arranged corresponding to the first positioning pin rod and the second positioning pin rod; the support assembly includes two symmetrically arranged support seats, and the support seat is provided with an arc groove matching the first positioning pin rod or the second positioning pin rod.

[0013] In one embodiment of the utility model, the second fixed guardrail includes a third limit member, a plurality of fourth limit members and a plurality of second U-shaped clips; the third limit member is arranged at the top of the bottom plate, and the third limit member abuts against the lower surface of the second top plate; a plurality of fourth limit members are arranged at intervals along the X direction at the top of the bottom plate and are located on the outside of the connecting plate; the fourth limit member has two surfaces, and the two surfaces respectively abut against the side walls of the second top plate and the connecting plate; the second U-shaped clip is clamped between the side wall of the fourth limit member and the outer wall of the second top plate.

[0014] In one embodiment of the utility model, the front fixed backrest has two surfaces, and the two surfaces are respectively against the outer wall of the side plate and the outer wall of the base.

[0015] In one embodiment of the utility model, the driving part includes a fixing member arranged on the top of the base plate and a plurality of tightening screws, the plurality of tightening screws are arranged on the fixing member at intervals, the tightening screws are threadedly connected to the fixing member, and the ends of the tightening screws are pressed against the outer wall of the limiting plate.

[0016] The above technical solution of the utility model has the following advantages compared with the prior art:

[0017] The excavator power arm welding assembly fixture described in the utility model can directly limit and support each component, ensure the size, coaxiality and other requirements of the component, and will not shift during the welding process, thereby ensuring the welding accuracy. At the same time, it allows welders to assemble quickly without the need for additional tooling and fixtures, nor does it require drawing lines to measure dimensions. This saves assembly time and manual labor, and can ensure the accuracy of assembly, which is both time-saving and labor-saving. In summary, the utility model saves time, manpower, and financial resources, and also ensures the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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

[0019] Figure 1 This is a schematic diagram of an excavator power arm welding assembly fixture in a preferred embodiment of the utility model. Figure 1 ;

[0020] Figure 2 This is a schematic diagram of an excavator power arm welding assembly fixture in a preferred embodiment of the utility model. Figure 2 ;

[0021] Figure 3 Is adopted Figure 1 Schematic diagram of excavator power arm welding Figure 1 ;

[0022] Figure 4 Is adopted Figure 1 Schematic diagram of excavator power arm welding Figure 2 .

[0023] Description of the accompanying drawings: 1000, bottom plate; 2000, welding assembly; 100, first positioning pin rod; 110, second positioning pin rod; 120, base fixed fence assembly; 121, base fixed fence; 130, base side fence; 131, fixed block; 132, limit block; 140, first fixed fence; 141, first limit member; 1411, first profiling groove; 142, second limit member; 1421, second profiling groove; 1422, slot; 1423, adjustment member; 143, first U shaped clip; 150, front fixed backrest; 160, rear movable backrest; 161, limit plate; 162, fixing piece; 163, tightening screw; 170, second fixed backrest; 171, third limit piece; 172, fourth limit piece; 173, second U-shaped clip; 180, big ear; 190, small ear; 200, ring; 210, side plate; 220, base; 230, first top plate; 240, second top plate; 250, connecting plate; 260, supporting assembly; 261, supporting seat; 2611, reinforcing plate. DETAILED DESCRIPTION

[0024] 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.

[0025] Reference Figure 1 to Figure 4 As shown, the embodiment of the utility model provides an excavator power arm welding assembly fixture, including: a horizontally arranged bottom plate 1000 and a welding assembly 2000 connected to the top of the bottom plate 1000. The welding assembly 2000 includes a first positioning pin rod 100, a second positioning pin rod 110, two base fixed fence assemblies 120, two base side fences 130, a first fixed fence 140, a front fixed fence 150, a rear movable fence 160 and a second fixed fence 170.

[0026] The first positioning pin rod 100 and the second positioning pin rod 110 extend along the Y direction and are located above the bottom plate 1000; the first positioning pin rod 100 is inserted into the big ear 180, the small ear 190 and the ring 200, and the second positioning pin rod 110 is inserted into the big ear 180, the side plate 210 and the ring 200; the base fixed grid assembly 120 is arranged on the top of the bottom plate 1000 and corresponds to the base 220 one by one, and the base fixed grid assembly 120 is used to support the limiting base 220; the base side grid 130 is arranged on the top of the bottom plate 1000 and corresponds to the base 220 one by one, and the base side grid 130 is set against the base 220 and the side plate 210 one end (left end or right end); the first fixed guardrail 140 is arranged at the top of the bottom plate 1000, and is used to support and limit the first top plate 230 and the small ear 190; the front fixed guardrail 150 and the rear movable guardrail 160 are respectively arranged on the outer walls of the two side plates 210 and the two bases 220, and the front fixed guardrail 150 is arranged on the top of the bottom plate 1000; the rear movable guardrail 160 includes a limiting plate 161 and a driving part, and the driving part drives the limiting plate 161 to move along the X direction on the bottom plate 1000 and abut against the outer wall of the side plate 210; the second fixed guardrail 170 is arranged on the top of the bottom plate 1000, and is used to support and limit the second top plate 240 and the connecting plate 250.

[0027] Specifically, this embodiment can directly limit and support each component, ensure the size, coaxiality and other requirements of the component, and no displacement will occur during the welding process, thereby ensuring the welding accuracy. At the same time, it allows welders to assemble quickly without the need for additional tooling and fixtures, nor does it require drawing lines to measure dimensions. This saves assembly time and manual labor, and ensures the accuracy of assembly, which is both time-saving and labor-saving. In summary, the utility model saves time, manpower, and financial resources, and also ensures the yield rate.

[0028] Furthermore, the first fixed guardrail 140 includes a first limit member 141 and a second limit member 142 spaced apart along the X direction, and the first limit member 141 and the second limit member 142 extend in the Y direction respectively; a first contoured groove 1411 is provided on the top of the first limit member 141 for supporting the front side of the limited first top plate 230; a second contoured groove 1421 and a clamping groove 1422 are provided on the second limit member 142, and the second contoured groove 1421 is used to support the rear side of the limited first top plate 230; two adjusting members 1423 that can be lifted up and down are provided in the clamping groove 1422, and the two adjusting members 1423 are lifted up and down to support the front side of the limited first top plate 230 and the small ears 190. The first profiling groove 1411 has two surfaces, which are respectively against the lower surface of the first top plate 230 and the side wall of the first top plate 230; the second profiling groove 1421 has two surfaces, which are respectively against the lower surface of the first top plate 230 and the side wall of the first top plate 230; the first fixed fence 140 also includes a first U-shaped clip 143, which is clamped on the side wall of the first stopper 141 and the side wall of the large ear 180. Specifically, the first stopper 141 and the second stopper 142 in this embodiment support the first top plate 230, and the first stopper 141, the second stopper 142 and the first U-shaped clip 143 limit the displacement of the first top plate 230 and the small ear 190 along the Y direction to ensure the welding quality and accuracy.

[0029] Furthermore, the adjusting member 1423 is vertically arranged and its bottom end is threadedly connected to the second stopper 142. Specifically, the height of the top end of the adjusting member 1423 can be adjusted by adjusting the screwing length of the adjusting member 1423 and the second stopper 142, thereby supporting the front side of the first top plate 230 and the small ear 190. In this way, the inclined surface on the first top plate 230 and the inclined surface at the bottom of the small ear 190 are supported and limited, thereby further improving the welding quality.

[0030] Furthermore, the base side guard 130 includes a fixed block 131 and a limit block 132. The fixed block 131 is arranged on the top of the bottom plate 1000 and abuts against the end face of the base 220; the limit block 132 abuts between the inner wall of the fixed block 131 and the end face of the side plate 210. Specifically, the base 220 is first limited by the base fixed guard assembly 120 to prevent the base 220 from shifting forward, backward, left and right. The side plate 210 is placed on the base 220, and the base 220 supports the side plate 210. Then, the distance from the end face of the base 220 to the end face of the side plate 210 is limited by the base side guard 130, so as to ensure the welding accuracy of this distance size.

[0031] Furthermore, the base fixing grid assembly 120 includes a plurality of base fixing grids 121 spaced apart along the Y direction, and the base fixing grids 121 are provided with third contoured grooves matching the shape of the lower surface of the base 220. Specifically, the base fixing grids 121 in this embodiment can limit the base to prevent it from shifting, thereby ensuring welding quality.

[0032] Furthermore, the present application also includes two support assemblies 260, and the two support assemblies 260 are respectively arranged corresponding to the first positioning pin rod 100 and the second positioning pin rod 110; the support assembly 260 includes two symmetrically arranged support seats 261, and the support seats 261 are provided with an arc groove matching the first positioning pin rod 100 or the second positioning pin rod 110, and the first positioning pin rod 100 and the second positioning pin rod 110 are arranged in the arc groove.

[0033] Furthermore, the support assembly 260 further includes a reinforcing plate 2611 disposed on the outer wall of the support seat 261 , and the reinforcing plate 2611 is disposed on the top of the bottom plate 1000 . The reinforcing plate 2611 reinforces the support seat 261 .

[0034] Further, the second fixed fence 170 includes a third stopper 171, a plurality of fourth stoppers 172, and a plurality of second U-shaped clips 173; the third stopper 171 is disposed on the top of the bottom plate 1000, and the third stopper 171 abuts against the lower surface of the second top plate 240; a plurality of fourth stoppers 172 are disposed at intervals along the X direction on the top of the bottom plate 1000 and are located on the outer side of the connecting plate 250; the fourth stopper 172 has two surfaces, and the two surfaces abut against the side walls of the second top plate 240 and the connecting plate 250 respectively; the second U-shaped clip 173 is clamped between the side wall of the fourth stopper 172 and the outer wall of the second top plate 240. The number of the second U-shaped clips 173 is equal to the number of the fourth stoppers 172. Specifically, the third limiter 171 in this embodiment supports the second top plate 240 , and the cooperation of the fourth limiter 172 and the second U-shaped clip 173 can limit the displacement of the connecting plate 250 and the second top plate 240 along the Y direction, thereby ensuring welding accuracy.

[0035] Furthermore, the front fixed backing grid 150 has two surfaces, which are respectively against the outer wall of the side plate 210 and the outer wall of the base 220. The driving part includes a fixing member 162 and a plurality of tightening screws 163 arranged on the top of the base plate 1000. The plurality of tightening screws 163 are arranged on the fixing member 162 at intervals and are threadedly connected to the fixing member 162. The ends of the tightening screws 163 are against the outer wall of the limiting plate 161. Specifically, in this embodiment, the components placed in the jig can be tightened by tightening the tightening screws 163 (fixing the components between the front fixed backing grid 150 and the limiting plate 161) to avoid displacement of the components during welding, thereby ensuring welding accuracy. In addition, the welded assembled product can be loosened by loosening the tightening screws 163, so that the product can be removed from the jig. It is convenient and quick to use.

[0036] The process of welding using this application is as follows:

[0037] First, place the two bases 220 on the base fixed fence 121, and place one of the side panels 210 (the side panel close to the front fixed fence 150) on the base 220, and make the base 220 and the side panel 210 against the base side fence 130. Then put the parts with holes in the product (put the small ear 190, the ring 200, and the big ear 180 on the first positioning pin rod 100; put the big ear 180, the ring 200, and the connecting plate 250 on the second positioning pin rod 110). Then put the first top plate 230 on the first fixed fence 140, and the second top plate 240 on the second fixed fence 170. In addition, place the other side panel 210 (the side panel close to the rear movable fence 160) on the base 220, and make the base 220 and the side panel 210 against the base side fence 130. Then tighten the jacking screw 163 so that the stop plate 161 and the front fixed fence 150 clamp the parts of the product. The workpiece has just been assembled like this, so that it can be welded.

[0038] 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 therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An excavator power arm welding assembly jig, characterized in that: include: Base plate, set horizontally; A welding assembly connected to the top of the bottom plate; the welding assembly includes a first positioning pin rod, a second positioning pin rod, two base fixed grid assemblies, two base side grids, a first fixed grid, a front fixed grid, a rear movable grid and a second fixed grid; the first positioning pin rod and the second positioning pin rod extend along the Y direction and are located above the bottom plate; the first positioning pin rod is inserted in the big ear, the small ear and the ring, and the second positioning pin rod is inserted in the big ear, the side plate and the ring; the base fixed grid assembly is arranged on the top of the bottom plate and corresponds to the base one by one, and the base fixed grid assembly is used to support and limit the base; The base side guard is arranged at the top of the bottom plate and corresponds to the base one by one, and the base side guard is abutted against the base and one end of the side plate; the first fixed guard is arranged at the top of the bottom plate, and is used to support and limit the first top plate and the small ears; the front fixed guard and the rear movable guard are respectively abutted against the outer walls of the two side plates and the two bases, and the front fixed guard is arranged at the top of the bottom plate; the rear movable guard includes a limit plate and a driving part, and the driving part drives the limit plate to move along the X direction on the bottom plate and abut against the outer wall of the side plate; the second fixed guard is arranged at the top of the bottom plate, and is used to support and limit the second top plate and the connecting plate.

2. The excavator power arm welding assembly jig according to claim 1, characterized in that: The first fixed fence includes a first limiting member and a second limiting member spaced apart along the X direction, and the first limiting member and the second limiting member extend in the Y direction respectively; a contoured groove is provided on the top of the first limiting member, which is used to support and limit the front side of the first top plate; a contoured groove and a clamping groove are provided on the second limiting member, and the contoured groove of the second limiting member is used to support and limit the rear side of the first top plate; two adjusting members that can be lifted up and down are provided in the clamping groove, and the lifting of the two adjusting members is used to support and limit the front side and the small ears of the first top plate.

3. The excavator power arm welding assembly jig according to claim 2, characterized in that: The contoured groove of the first limiting member has two surfaces, which respectively abut against the lower surface of the first top plate and the side wall of the first top plate; the contoured groove of the second limiting member has two surfaces, which respectively abut against the lower surface of the first top plate and the side wall of the first top plate; the first fixed support grid also includes a first U-shaped clip, which is clamped on the side wall of the first limiting member and the side wall of the big ear.

4. The excavator power arm welding assembly jig according to claim 3, characterized in that: The adjusting member is arranged vertically and the bottom end thereof is threadedly connected to the second limiting member.

5. The excavator power arm welding assembly jig according to claim 1, characterized in that: The side fence of the base includes a fixed block and a limit block. The fixed block is arranged on the top of the bottom plate and abuts against the end surface of the base; the limit block abuts between the inner wall of the fixed block and the end surface of the side plate.

6. The excavator power arm welding assembly jig according to claim 1, characterized in that: The base fixing grid assembly comprises a plurality of base fixing grids spaced apart along the Y direction, and the base fixing grids are provided with contoured grooves matching the shape of the lower surface of the base.

7. The excavator power arm welding assembly jig according to claim 1, characterized in that: It also includes two support components, which are respectively arranged corresponding to the first positioning pin rod and the second positioning pin rod; the support component includes two symmetrically arranged support seats, and the support seats are provided with an arc groove matching the first positioning pin rod or the second positioning pin rod.

8. The excavator power arm welding assembly jig according to claim 1, characterized in that: The second fixed fence includes a third limiter, a plurality of fourth limiters and a plurality of second U-shaped clips; the third limiter is arranged at the top of the bottom plate, and the third limiter abuts against the lower surface of the second top plate; a plurality of fourth limiters are arranged at intervals along the X direction at the top of the bottom plate and are located on the outer side of the connecting plate, the fourth limiter; the fourth limiter has two surfaces, and the two surfaces respectively abut against the side walls of the second top plate and the connecting plate; the second U-shaped clip is clamped between the side wall of the fourth limiter and the outer wall of the second top plate.

9. The excavator power arm welding assembly jig according to claim 1, characterized in that: The front fixed fence has two surfaces, which are respectively against the outer wall of the side plate and the outer wall of the base.

10. The excavator power arm welding assembly jig according to claim 1, characterized in that: The driving part includes a fixing member and a plurality of tightening screws arranged on the top of the base plate. The plurality of tightening screws are arranged on the fixing member at intervals. The tightening screws are threadedly connected to the fixing member, and the ends of the tightening screws are pressed against the outer wall of the limiting plate.

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