A positioning fixture for welding an electric vehicle fork assembly

Abstract

The utility model discloses a positioning fixture for electric motor car front fork assembly welding, including fixed bolster, and lower fork pipe fixing mechanism, fork hook fixing mechanism, light box fixing mechanism, lower fork pipe fixing mechanism includes lower fork pipe to block, lower fork pipe locating block, first air cylinder, be provided with the first recess that cooperates with lower fork pipe on lower fork pipe to block, and lower fork pipe locating block is connected in the top rod front end of first air cylinder, and fork hook fixing mechanism includes fork hook locating block, fork hook locating clamp, second air cylinder, be provided with the second recess that cooperates with fork hook on fork hook locating block, and second air cylinder connects fork hook locating clamp and controls its opening and closing, and fork hook locating clamp and fork hook locating block cooperate and fix the fork hook. Lower fork pipe fixing mechanism, fork hook fixing mechanism, light box fixing mechanism position and clamp lower fork pipe, fork hook, light box respectively, then one -time welding forming of these parts one time, has saved the step of spot welding positioning, and the precision of finished product is high.

Description

Technical Field

[0001] This utility model relates to the field of electric vehicle frame technology, and in particular to a positioning fixture for welding electric vehicle front fork components. Background Technology

[0002] Electric vehicles are common two-wheeled or three-wheeled modes of transportation. The frame is one of the main components of an electric vehicle, serving as its core structural framework, supporting the vehicle body and connecting various parts. The main body of an electric vehicle frame is typically constructed from metal tubing or composite materials, formed through welding or die-casting processes. It includes major components such as the main frame, front fork, and rear fork, forming a complete mechanical load-bearing system. The front fork assembly of the electric vehicle frame is the main component connecting to the front wheel, including the fork tube, fork hook, reflector mounting box, and drum brake column. The fork hook is located at the end of the fork tube and is used to connect to the wheel; the reflector mounting box is located on the side of the fork tube and is used to install the reflector; the drum brake column is used to install the drum brake assembly.

[0003] In the existing technology, components such as fork hooks, reflector fixing boxes, and drum brake columns are all assembled on a workbench and then manually spot-welded to position them, and then manually welded using an argon arc welding machine in the next process. However, this operation method has the following disadvantages: (1) The dimensional accuracy of each component of the fork is low and the dimensional error is large after spot welding. (2) It requires manual spot welding for positioning and then manual welding to complete the process, which is inefficient and has high labor costs. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning fixture for welding the fork hook of an electric vehicle, addressing the shortcomings of the existing technology.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] A positioning fixture for welding electric vehicle front fork assemblies, characterized in that it includes a fixed bracket, and a lower fork tube fixing mechanism and a fork hook fixing mechanism disposed on the fixed bracket. The lower fork tube fixing mechanism includes a lower fork tube support block, a lower fork tube positioning block, and a first cylinder. The lower fork tube support block and the first cylinder are fixedly connected to the fixed bracket. The lower fork tube support block is provided with a first groove that mates with the lower fork tube. The lower fork tube positioning block is connected to the front end of the push rod of the first cylinder. The fork hook fixing mechanism includes a fork hook positioning block, a fork hook positioning clamp, and a second cylinder. The fork hook positioning block and the second cylinder are fixedly connected to the fixed bracket. The fork hook positioning block is provided with a second groove that mates with the fork hook. The second cylinder is connected to the fork hook positioning clamp and controls its opening and closing. The fork hook positioning clamp and the fork hook positioning block cooperate to fix the fork hook.

[0007] Furthermore, the fork hook positioning clamp includes a first clamp body and a second clamp body. The first clamp body is fixedly connected to the body of the second cylinder, and the second clamp body is fixedly connected to the push rod of the second cylinder. The lower end of the first clamp body is provided with a third groove that cooperates with the fork hook.

[0008] Furthermore, a shaft core is provided at the lower end of the second clamp body on one side opposite to the first clamp body, and the shaft core is connected to the circular hole of the fork hook.

[0009] Furthermore, the fixed bracket is provided with a first adjustment hole, and the lower fork tube support block and the first cylinder are both adjustablely connected to the fixed bracket through the first adjustment hole.

[0010] Furthermore, a reflector fixing mechanism is also connected to the fixed bracket. The reflector fixing mechanism includes a third cylinder and a reflector positioning block. The body of the third cylinder is fixedly connected to the fixed bracket, and the reflector positioning block is fixedly connected to the top rod of the third cylinder.

[0011] Furthermore, the reflector fixing mechanism also includes a third cylinder fixing plate, and the third cylinder is connected to the fixing bracket through the third cylinder fixing plate.

[0012] Furthermore, the third cylinder fixing plate is provided with a through hole, and a guide rod is connected to the reflector box positioning block, the guide rod being slidably connected in the through hole.

[0013] Furthermore, the third cylinder fixing plate is provided with a second adjustment hole, and the third cylinder fixing plate is adjustablely connected to the fixing bracket through the second adjustment hole.

[0014] Furthermore, the lower fork tube fixing mechanism, the fork hook fixing mechanism, and the reflector box fixing mechanism are all provided in two sets.

[0015] Furthermore, a drum brake column positioning block is connected to the lower fork tube support block, and a fourth groove is provided on the drum brake column positioning block to cooperate with the drum brake column. A strong magnet is provided in the fourth groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This fixture uses a lower fork tube fixing mechanism, a fork hook fixing mechanism, and a reflector box fixing mechanism set on a fixed bracket to position and clamp the lower fork tube, fork hook, and reflector box respectively. Then, these parts are welded together in one go, eliminating the need for spot welding positioning. The finished product has high precision, will not deform, has good consistency, and saves labor costs.

[0018] A strong magnet is embedded in the drum brake column positioning block to prevent the drum brake column from moving or falling off, resulting in higher positioning accuracy and thus reducing the product defect rate.

[0019] Other features and advantages of this invention will be set forth in the following description or may be learned by practicing this invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure from the front of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the reverse side structure of the fixed bracket;

[0022] Figure 3 A schematic diagram of the explosion of the fork hook positioning clamp;

[0023] Figure 4 Enlarged view of a portion of the drum brake column positioning block;

[0024] Figure 5 This is a schematic diagram illustrating the usage state of an embodiment.

[0025] In the diagram: 1-Fixed bracket, 2-Lower fork tube support block, 3-Lower fork tube positioning block, 4-First cylinder, 5-Lower fork tube, 6-Fork hook positioning block, 7-Fork hook positioning clamp, 8-Second cylinder, 9-Fork hook, 10-First adjustment hole, 11-Third cylinder, 12-Reflector box positioning block, 13-Third cylinder fixing plate, 14-Through hole, 15-Guide rod, 16-Second adjustment hole, 17-Drum brake column positioning block, 18-Drum brake column, 19-Strong magnet, 20-Reflector box, 21-First groove, 61-Second groove, 71-First clamping body, 72-Second clamping body, 73-Third groove, 74-Shaft core column, 171-Fourth groove. Detailed Implementation

[0026] To enhance understanding of this utility model, we will now describe it in further detail with reference to the accompanying drawings. This embodiment is only used to explain this utility model and does not constitute a limitation on the scope of protection of this utility model.

[0027] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," "fixing," and "setting," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] like Figure 1 As shown, a specific embodiment of a positioning method for welding electric vehicle front fork components includes a fixed bracket 1, and a lower fork tube fixing mechanism, a fork hook fixing mechanism, and a reflector fixing mechanism disposed on the fixed bracket 1.

[0030] The lower fork tube fixing mechanism includes a lower fork tube support block 2, a lower fork tube positioning block 3, and a first cylinder 4. The lower fork tube support block 2 and the first cylinder 4 are fixedly connected to the fixed bracket 1. The lower fork tube support block 2 is provided with a first groove 21 that cooperates with the lower fork tube 5. The lower fork tube positioning block 3 is connected to the front end of the push rod of the first cylinder 4.

[0031] like Figure 3 As shown, the fork hook fixing mechanism includes a fork hook positioning block 6, a fork hook positioning clamp 7, and a second cylinder 8. The fork hook positioning block 6 and the second cylinder 8 are fixedly connected to the fixed bracket 1. The fork hook positioning block 6 is provided with a second groove 61 that cooperates with the fork hook 9. The second cylinder 8 is connected to the fork hook 9 positioning clamp and controls its opening and closing. The fork hook positioning clamp 7 and the fork hook positioning block 6 cooperate to fix the fork hook 9.

[0032] Specifically, the fork hook positioning clamp 7 includes a first clamping body 71 and a second clamping body 72. The first clamping body 71 is fixedly connected to the body of the second cylinder 8 and cannot move. The second clamping body 72 is fixedly connected to the push rod of the second cylinder 8 and can move and open and close with the push rod of the second cylinder 8. The lower end of the first clamping body 71 is provided with a third groove 73 that cooperates with the fork hook 9. The lower end of the second clamping body 72 is provided with a shaft core 74 on the side opposite to the first clamping body 71, and the shaft core 74 is connected to the round hole of the fork hook 9.

[0033] like Figure 1As shown, the reflector box fixing mechanism includes a third cylinder 11, a reflector box positioning block 12, and a third cylinder fixing plate 13. The body of the third cylinder 11 is connected to the fixing bracket 1 via the third cylinder fixing plate 13, and the reflector box positioning block 12 is fixedly connected to the push rod of the third cylinder 11. The third cylinder fixing plate 13 is provided with a through hole 14, and a guide rod 15 is connected to the reflector box positioning block 12, which is slidably connected in the through hole 14. When the push rod of the third cylinder 11 moves the reflector box positioning block 12, the guide rod 15 slides along the through hole 14, ensuring the stability of the reflector box positioning block 12 during movement. The reflector box positioning block 12 can position the reflector box 20 at a designated position on the side of the lower fork tube 5.

[0034] like Figure 4 As shown, a drum brake column positioning block 17 is connected to the lower fork tube support block 2. The drum brake column positioning block 17 is provided with a fourth groove 171 that cooperates with the drum brake column 18. A strong magnet 19 is provided in the fourth groove 171.

[0035] Preferred, such as Figure 2 As shown, the fixed bracket 1 is provided with a first adjustment hole 10, and the lower fork tube support block 2 and the first cylinder 4 are both adjustablely connected to the fixed bracket 1 through the first adjustment hole 10. The third cylinder fixing plate 13 is provided with a second adjustment hole 16, and the third cylinder fixing plate 13 is adjustablely connected to the fixed bracket 1 through the second adjustment hole 16. The first adjustment hole 10 and the second adjustment hole 16 are used to adjust the relative positions of the lower fork tube fixing mechanism, the fork hook fixing mechanism, and the reflector fixing mechanism on the fixed bracket 1 to accommodate front fork assemblies of different sizes.

[0036] Preferably, the lower fork tube fixing mechanism, the fork hook fixing mechanism, and the reflector box fixing mechanism are all provided in two sets.

[0037] The working process and principle of the above embodiments are as follows:

[0038] like Figure 5As shown, firstly, based on the length of the lower fork tube 5, adjust the positions of the lower fork tube support block 2, the first cylinder 4, and the third cylinder fixing plate 13 vertically within the adjustment range of the first adjustment hole 10 and the second adjustment hole 16. Then, place the fork hook 9 into the second groove 61 of the fork hook positioning block 6, activate the second cylinder 8, and the second clamping body 72 moves towards the first clamping body 71. The shaft core 74 passes through the round hole on the fork hook 9, and the fork hook 9 is clamped and fixed in the third groove 73. Next, place the lower fork tube 5 into the first groove 21 on the lower fork tube support block 2, activate the first cylinder 4, and the first cylinder 4 drives the lower fork tube positioning block 3 to push the lower fork tube 5 upwards until the upper end of the lower fork tube 5 firmly abuts against the fork hook 9. At this point, both the lower fork tube 5 and the fork hook 9 are positioned and clamped. Then, place the reflector box 20 on the side of the lower fork tube 5, activate the third cylinder 11, and the reflector box positioning block 12 can lock the reflector box 20 in the designated position on the side of the lower fork tube 5. Finally, the drum brake column 18 is placed in the fourth groove 171 of the drum brake column positioning block 17. Since there is a strong magnet 19 in the fourth groove 171, the position of the drum brake column 18 can be fixed to prevent the drum brake column 18 from moving or falling off during the welding process.

[0039] The above specific embodiments are only for illustrating the technical concept and structural features of this utility model, and are intended to enable those skilled in the art to implement them. However, the above content does not limit the protection scope of this utility model. Any equivalent changes or modifications made in accordance with the spirit and essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A positioning fixture for welding front fork assemblies of electric vehicles, characterized in that: The system includes a fixed bracket (1), and a lower fork tube fixing mechanism and a fork hook fixing mechanism disposed on the fixed bracket (1). The lower fork tube fixing mechanism includes a lower fork tube support block (2), a lower fork tube positioning block (3), and a first cylinder (4). The lower fork tube support block (2) and the first cylinder (4) are fixedly connected to the fixed bracket (1). The lower fork tube support block (2) is provided with a first groove (21) that mates with the lower fork tube (5). The lower fork tube positioning block (3) is connected to the first cylinder. The fork hook fixing mechanism includes a fork hook positioning block (6), a fork hook positioning clamp (7), and a second cylinder (8) at the front end of the top rod of the cylinder (4). The fork hook positioning block (6) and the second cylinder (8) are fixedly connected to the fixed bracket (1). The fork hook positioning block (6) is provided with a second groove (61) that cooperates with the fork hook (9). The second cylinder (8) is connected to the fork hook positioning clamp (7) and controls its opening and closing. The fork hook positioning clamp (7) and the fork hook positioning block (6) cooperate to fix the fork hook (9).

2. The positioning fixture for welding electric vehicle front fork assemblies according to claim 1, characterized in that: The fork hook positioning clamp (7) includes a first clamp body (71) and a second clamp body (72). The first clamp body (71) is fixedly connected to the body of the second cylinder (8), and the second clamp body (72) is fixedly connected to the top rod of the second cylinder (8). The lower end of the first clamp body (71) is provided with a third groove (73) that cooperates with the fork hook (9).

3. The positioning fixture for welding electric vehicle front fork assemblies according to claim 2, characterized in that: The lower end of the second clamp (72) is provided with a shaft core (74) on the side opposite to the first clamp (71), and the shaft core (74) is connected to the round hole of the fork hook (9).

4. The positioning fixture for welding electric vehicle front fork assemblies according to claim 1, characterized in that: The fixed bracket (1) is provided with a first adjustment hole (10), and the lower fork tube support block (2) and the first cylinder (4) are both adjustablely connected to the fixed bracket (1) through the first adjustment hole (10).

5. A positioning fixture for welding electric vehicle front fork assemblies according to claim 1, characterized in that: A reflector box fixing mechanism is also connected to the fixed bracket (1). The reflector box fixing mechanism includes a third cylinder (11) and a reflector box positioning block (12). The body of the third cylinder (11) is fixedly connected to the fixed bracket (1), and the reflector box positioning block (12) is fixedly connected to the top rod of the third cylinder (11).

6. A positioning fixture for welding electric vehicle front fork assemblies according to claim 5, characterized in that: The reflector box fixing mechanism also includes a third cylinder fixing plate (13), and the third cylinder (11) is connected to the fixing bracket (1) through the third cylinder fixing plate (13).

7. A positioning fixture for welding electric vehicle front fork assemblies according to claim 6, characterized in that: The third cylinder fixing plate (13) is provided with a through hole (14), and the reflector box positioning block (12) is connected with a guide rod (15), which is slidably connected in the through hole (14).

8. A positioning fixture for welding electric vehicle front fork assemblies according to claim 6, characterized in that: The third cylinder fixing plate (13) is provided with a second adjustment hole (16), and the third cylinder fixing plate (13) is adjustablely connected to the fixing bracket (1) through the second adjustment hole (16).

9. A positioning fixture for welding electric vehicle front fork assemblies according to claim 5, characterized in that: The lower fork tube fixing mechanism, the fork hook fixing mechanism, and the reflector box fixing mechanism are all provided in two sets.

10. A positioning fixture for welding electric vehicle front fork assemblies according to claim 1, characterized in that: The lower fork tube support block (2) is connected to a drum brake column positioning block (17), and the drum brake column positioning block (17) is provided with a fourth groove (171) that cooperates with the drum brake column (18), and a strong magnet (19) is provided in the fourth groove (171).

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