Forklift rear axle assembling and welding jig
By using a welding fixture for assembling the forklift rear axle, and securing the forklift rear axle with clamping parts and locating pins, the problems of low welding efficiency and cumulative errors are solved, achieving efficient and precise assembly and welding, and reducing the defect rate.
Patent Information
- Application Number
- CN202423120071.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-17
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2034-12-17
AI Technical Summary
In the existing technology, the welding and assembly efficiency of the rear axle of forklifts is low and it is easy for cumulative errors to occur, resulting in a high defect rate.
A forklift rear axle assembly welding fixture is used, which uses a clamping part to fix the forklift rear axle from the inside and outside, and uses a locating pin to achieve initial positioning, ensuring the coaxiality and positional accuracy of the perforated parts, thus simplifying the assembly process.
This improved welding accuracy and assembly efficiency, reduced manpower and financial resources consumption, and ensured the yield rate of forklift rear axles.
Smart Images
Figure CN223617037U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding fixture technology, and in particular to a welding fixture for assembling a forklift rear axle. Background Technology
[0002] The forklift rear axle is a crucial component of a forklift. Besides supporting the wheels and connecting them, it also enables steering and direction adjustment during forklift operation through the coordinated action of the steering gear and steering mechanism. The forklift rear axle is a bridge structure welded from multiple metal parts. Currently, the assembly process involves measuring and drawing positioning lines before welding, then using U-clamps to secure the metal parts, and finally welding. This method is inefficient and prone to errors. Furthermore, drawing positioning lines introduces cumulative errors, resulting in a defective forklift rear axle that cannot be used properly even after welding. Utility Model Content
[0003] Therefore, the technical problem to be solved by this utility model is to overcome the problems of low efficiency, easy accumulation of errors, and high defect rate of forklift rear axles in the existing positioning method of assembling forklift rear axles by measuring and drawing positioning lines. In this way, a forklift rear axle assembly and welding fixture is provided, which can quickly and accurately assemble forklift rear axles without the need for external tools and measuring and marking lines, which not only saves manpower and financial resources, but also ensures the yield rate of forklift rear axles.
[0004] To solve the above-mentioned technical problems, this utility model provides a forklift rear axle assembly and welding fixture for fixing the forklift rear axle. The forklift rear axle includes two perforated parts facing each other, a bent part connecting the two perforated parts, and a connecting part. The fixture includes...
[0005] Base;
[0006] An abutment, which is connected to the base, abuts against the forklift rear axle from the inside and outside of the forklift rear axle respectively;
[0007] Two positioning pins pass through the circular holes of the two perforated parts. The positioning pins have a circular cross-section and are fitted with the circular holes.
[0008] In one embodiment of the present invention, the fastening member includes a fixed fastening member and a movable fastening member. The fixed fastening member abuts against the outer side of the forklift rear axle, and the movable fastening member abuts against the inner side of the forklift rear axle.
[0009] In one embodiment of this utility model, the fixed fastening member is fixedly connected to the base, and the movable fastening member is movably connected to the base.
[0010] In one embodiment of the present invention, the movable abutment is disposed between the two perforated members.
[0011] In one embodiment of this utility model, the movable abutment includes a bottom plate and a top plate arranged vertically. The bottom plate is connected to the base by screws, and the top plate supports the connector located between the two perforated parts.
[0012] In one embodiment of this utility model, the movable abutment further includes a vertical plate, the bottom plate and the top plate are connected by the vertical plate, the edge of the vertical plate is provided with an abutment slope, the abutment slope abuts against the slope of the bending member, and the slope of the abutment slope is equal to the slope of the slope of the bending member.
[0013] In one embodiment of this utility model, the edge of the vertical plate is provided with a clearance opening, which is positioned directly opposite the bend of the bent component.
[0014] In one embodiment of the present invention, the fixing fastener includes a first fixing fastener and a second fixing fastener, the first fixing fastener abutting against one side of the forklift rear axle along a first direction, and the second fixing fastener abutting against one side of the forklift rear axle along a second direction.
[0015] In one embodiment of the present invention, both the first fixing member and the second fixing member are provided with abutting protrusions, and the first fixing member and the second fixing member abut against the outer side of the forklift rear axle through the abutting protrusions.
[0016] In one embodiment of the present invention, the second fixing member abuts against the connector located on one side of the two perforated members, and the first fixing member abuts against the perforated members.
[0017] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:
[0018] The forklift rear axle assembly and welding fixture described in this utility model has abutting parts that press against the forklift rear axle from the inside and outside, conforming to the assembly process of first fixing two perforated parts and then fixing the bent parts and connecting parts. This facilitates the installation of the bent parts and connecting parts between the two perforated parts, preventing them from shaking during welding and thus improving welding accuracy. Two locating pins are used to pass through the round holes of the two forklift rear axles for initial positioning, and then the two perforated parts are placed on the base, greatly improving assembly efficiency. The locating pins and round holes have a smooth transition fit and good coaxiality, further reducing the positional deviation of the two perforated parts. Attached Figure Description
[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0020] Figure 1 This is a schematic diagram of the forklift rear axle assembly and welding fixture and the forklift rear axle in a preferred embodiment of this utility model;
[0021] Figure 2 for Figure 1 The diagram shows the structural schematic of the welding fixture for assembling the rear axle of a forklift.
[0022] Figure 3 for Figure 1 The diagram shows the structure of the forklift's rear axle.
[0023] Figure 4 for Figure 1 The diagram shows the structure of the movable contact part of the welding fixture for assembling the rear axle of a forklift.
[0024] Explanation of reference numerals in the accompanying drawings: 1. Forklift rear axle assembly and welding fixture; 11. Base; 111. First fixed fastener; 112. Second fixed fastener; 113. Closed protrusion; 114. Closed protrusion; 12. Locating pin; 13. Movable fastener; 131. Screw hole; 132. Base plate; 133. Strip hole; 134. Closed inclined surface; 135. Clearance opening; 136. Top plate; 137. Vertical plate; 2. Forklift rear axle; 21. Round hole; 22. Connector; 23. Perforated part; 24. Bending part; 25. Connector; 26. Perforated part; X, Second direction; Y, First direction. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.
[0026] Example
[0027] Reference Figure 1 , Figure 2 and Figure 3 As shown, in one embodiment of this utility model, a forklift rear axle assembly welding fixture 1 is disclosed, which is used to fix a forklift rear axle 2. The forklift rear axle 2 includes two perforated parts 26 / 23 arranged opposite each other, a bent part 24 connecting the two perforated parts 26 / 23, and two connecting parts 22 / 25. The circular holes 21 of the two perforated parts 26 / 23 are aligned. The fixture includes...
[0028] The base 11 is made of a metal plate, which serves to provide stable support;
[0029] The abutment is connected to the base 11. The abutment abuts against the forklift rear axle 2 from the inside and outside of the forklift rear axle 2 to fix the connecting parts 22 / 25, the bent parts 24 and the perforated parts 26 / 23. The abutment abuts against the inside of the bent parts 24 from the inside of the forklift rear axle 2, which makes it easier to accurately place the bent parts 24 between the two perforated parts 26 / 23 and improves the welding accuracy.
[0030] Positioning pins 12, two of which pass through the circular holes 21 of the two perforated parts 26 / 23, serve as initial positioning for the two perforated parts 26 / 23, ensuring the parallelism and precise alignment of the two perforated parts 26 / 23; the cross-section of the positioning pins 12 is circular, and the positioning pins 12 and the circular holes 21 are in a transition fit, that is, the diameter of the positioning pins 12 is slightly smaller than the diameter of the circular holes 21, and the gap between the positioning pins 12 and the circular holes 21 is very small, allowing the positioning pins 12 to slide within the circular holes 21, which facilitates assembly and ensures the coaxiality of the circular holes 21 and the positioning pins 12.
[0031] Reference Figure 2 As shown, the clamping member further includes a fixed clamping member and a movable clamping member 13. The fixed clamping member abuts against the outer side of the forklift rear axle 2, and the movable clamping member 13 abuts against the inner side of the forklift rear axle 2.
[0032] Reference Figure 2 and Figure 4 As shown, the fixed fastener is welded to the base 11, and the movable fastener 13 is movably connected to the base 11. The position of the movable fastener 13 is determined according to the welding position of the bent part 24. The movable fastener 13 is then fixed to the base 11 after the bent part 24 is close to the movable fastener 13.
[0033] Reference Figure 1 As shown, the volume of the movable abutment 13 is smaller than that of the forklift rear axle 2, so as to facilitate the placement of the movable abutment 13 between the two perforated parts 26 / 23.
[0034] Reference Figure 4 As shown, the movable abutment 13 further includes a bottom plate 132 and a top plate 136 arranged vertically. The bottom plate 132 is connected to the base 11 by screws. Specifically, both the bottom plate 132 and the base 11 are provided with screw holes 131. In order to adjust the position of the movable abutment 13, the bottom plate 132 is also provided with a strip hole 133. The screw passes through the strip hole 133 or the screw hole 131 to connect to the screw hole of the base 11. The top plate 136 supports the connector 22 located between the two perforated parts 26 / 23 so that the connector 22 can be welded. Furthermore, in order to reduce the weight of the movable abutment 13, the bottom plate 11 is provided with weight reduction holes.
[0035] Reference Figure 4 As shown, the movable retaining member 13 further includes a vertical plate 137. The bottom plate 132 and the top plate 136 are connected by the vertical plate 137. The vertical plate 137 is provided with weight-reducing holes. In order for the bending member 24 to be accurately placed between the two perforated members 26 / 23, the edge of the vertical plate 137 is provided with a retaining inclined surface 134. The retaining inclined surface 134 abuts against the inclined surface of the bending member 24, and the slope of the retaining inclined surface 134 is equal to the slope of the inclined surface of the bending member 24.
[0036] Furthermore, in order to evenly support both ends of the bent component 24 and prevent misalignment during welding, two parallel and spaced vertical plates 137 are included, with the two vertical plates 137 respectively supporting both ends of the bent component 24.
[0037] Reference Figure 4 As shown, further, in order to avoid the bend of the bent part 24, the edge of the vertical plate 137 is provided with a clearance opening 135. The clearance opening 135 is located at the bend of the vertical plate close to the inclined surface 134. The clearance opening 135 is set directly opposite the bend of the bent part 24. The clearance opening 135 can avoid the bend of the bent part 24 and prevent the vertical plate 137 from being damaged by impact with the bent plate.
[0038] Reference Figure 2 As shown, the fixing fastener further includes a first fixing fastener 111 and a second fixing fastener 112. The first fixing fastener 111 abuts against one side of the forklift rear axle 2 along the first direction Y, while the other side of the forklift rear axle 2 along the first direction Y is left empty. The second fixing fastener 112 abuts against one side of the forklift rear axle 2 along the second direction X, while the other side of the forklift rear axle 2 along the second direction X is left empty. The purpose of leaving the empty side is to facilitate assembly and welding operations.
[0039] Reference Figure 2 As shown, further, since there is a height difference on the surface of the perforated part 23 due to the installation of other metal parts, both the first fixing fastener 111 and the second fixing fastener 112 are provided with abutting protrusions. The first fixing fastener 111 avoids and abuts against the side of the perforated part 23 through the abutting protrusion 113; the second fixing fastener 112 abuts against the connector 25 of the forklift rear axle through the abutting protrusion 114.
[0040] Reference Figure 2As shown, the first fixing member 111 further includes two parallel and spaced vertical plates, with the edges of the vertical plates protruding to form abutment protrusions 113; the second fixing member 112 also includes two parallel and spaced horizontal plates, with the edges of the horizontal plates protruding to form abutment protrusions 114. The second fixing member 111 abuts against the edges of the two perforated members 26 / 23 through the edges of the horizontal plates, and the second fixing member 111 abuts against the side of the connector 2 through the abutment protrusions 114.
[0041] The working principle of the forklift rear axle assembly and welding fixture 1 described in this utility model is as follows:
[0042] When assembling the forklift rear axle 2, place the two perforated parts 26 / 23 onto the two ends of the two locating pins 12. Then, place the two perforated parts 26 / 23 over the movable retaining part 13 from top to bottom and finally place them on the base 11. Move the two perforated parts 26 / 23 to fit tightly against the first fixed retaining part 111 and the second fixed retaining part 112. Then, adjust the spacing between the two perforated parts 26 / 23 to the correct position. Next, place the bent part 24 against the inclined surface 134 of the vertical plate 137. Then, fix the movable retaining part 13 with screws. Finally, place the connector 25 on one side of the two perforated parts 26 / 23 and place the connector 22 on the top plate 136 to complete the assembly. Then, start welding the connector 22, connector 25, and bent part 24 onto the two perforated parts 26 / 23. After welding, loosen the movable retaining part 13 and then remove the forklift rear axle 2.
[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A welding fixture for assembling a forklift rear axle, used to fix a forklift rear axle, the forklift rear axle comprising two perforated parts facing each other, a bent part connecting the two perforated parts, and a connecting part, characterized in that, The fixtures include, Base; An abutment, which is connected to the base, abuts against the forklift rear axle from the inside and outside of the forklift rear axle respectively; Two positioning pins pass through the circular holes of the two perforated parts. The positioning pins have a circular cross-section and are fitted with the circular holes.
2. The forklift rear axle assembly and welding fixture according to claim 1, characterized in that, The fastening component includes a fixed fastening component and a movable fastening component. The fixed fastening component abuts against the outer side of the forklift rear axle, and the movable fastening component abuts against the inner side of the forklift rear axle.
3. The forklift rear axle assembly and welding fixture according to claim 2, characterized in that, The fixed fastener is fixedly connected to the base, and the movable fastener is movably connected to the base.
4. The forklift rear axle assembly and welding fixture according to claim 2, characterized in that, The movable abutment is positioned between the two perforated members.
5. A forklift rear axle assembly and welding fixture according to claim 2, characterized in that, The movable fastener includes a bottom plate and a top plate arranged vertically. The bottom plate is connected to the base by screws, and the top plate supports the connector located between the two perforated parts.
6. A forklift rear axle assembly and welding fixture according to claim 5, characterized in that, The movable retaining member also includes a vertical plate, the bottom plate and the top plate are connected by the vertical plate, the edge of the vertical plate is provided with a retaining slope, the retaining slope abuts against the slope of the bending member, and the slope of the retaining slope is equal to the slope of the slope of the bending member.
7. A forklift rear axle assembly and welding fixture according to claim 6, characterized in that, The edge of the vertical plate is provided with a clearance opening, which is positioned directly opposite the bend of the bent component.
8. A forklift rear axle assembly and welding fixture according to claim 2, characterized in that, The fixing fastener includes a first fixing fastener and a second fixing fastener. The first fixing fastener abuts against one side of the forklift rear axle along a first direction, and the second fixing fastener abuts against one side of the forklift rear axle along a second direction.
9. A forklift rear axle assembly and welding fixture according to claim 8, characterized in that, Both the first and second fixing fasteners are provided with abutting protrusions, and the first and second fixing fasteners abut against the outer side of the forklift rear axle through the abutting protrusions.
10. A forklift rear axle assembly and welding fixture according to claim 8, characterized in that, The second fixing member abuts against the connector located on one side of the two perforated members, and the first fixing member abuts against the perforated members.