Auxiliary welding tool for rear tripod of bicycle

Abstract

The welding auxiliary tool for the bicycle rear tripod comprises a bottom plate, a side plate is arranged on the rear side of the top of the bottom plate, a first supporting block is arranged at one end of the top of the bottom plate, an L-shaped first base plate is arranged on the top of the first supporting block, and an L-shaped second base plate is rotationally connected to the front side of the side plate. The top of the first base plate and the front side of the second base plate are slidably connected with first fixing mechanisms used for fixing the chain support and the seat support respectively, a sliding plate is arranged at the upper end of the second base plate, a sliding rod is arranged on the rear side of the sliding plate, a sliding groove corresponding to the sliding rod is formed in the front side of the side plate, the sliding rod is slidably arranged in the sliding groove, and angle scale marks are arranged on the edge of the sliding groove. A power mechanism for driving the second base plate to rotate is arranged on the front side of the side plate, a second supporting block is arranged at the other end of the top of the bottom plate, and a second fixing mechanism for fixing the rear fork end is arranged on the top of the second supporting block. The fixing device is simple and convenient in operation of fixing each part of the rear triangle and convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bicycle processing technical field especially relates to a kind of welding auxiliary tool for bicycle rear triangular frame. BACKGROUND

[0002] The bicycle rear triangle generally includes chain stay, seat stay and seat tube, which usually need to be welded with other key components to form a solid overall structure. For example, the chain stay and seat stay end need to be welded with the rear fork end, which is located at both ends of the rear wheel axle for fixing the rear wheel. The chain stay and seat stay are welded together with the rear fork end to ensure the stability and safety of the rear wheel.

[0003] When welding the rear fork end of the rear triangular frame, using a welding auxiliary tool can ensure the accuracy and consistency during the welding process. The main purpose of this tool is to fix the position of the rear fork end, chain stay and seat stay, ensuring that they maintain the correct relative position and angle during the entire welding process. Currently, the common auxiliary tool includes a base and positioning clamps. The chain stay, seat stay and rear fork end are placed in the positioning clamps of the base, and after adjusting the angle, they are fixed and then welded after being assembled horizontally. This method requires flipping after welding one side to weld the other side, which not only increases the complexity of the operation, but also may cause dimensional deviation or damage, affecting the welding quality. Moreover, the angle between the chain stay and seat stay is often measured using a protractor, which has low convenience of use. SUMMARY

[0004] The utility model aims at solving the insufficient prior art, and provides a kind of welding auxiliary tool for bicycle rear triangular frame.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a kind of welding auxiliary tool for bicycle rear triangular frame, including bottom plate, bottom plate top rear side is equipped with side plate, bottom plate top one end is equipped with first support block, first support block top is equipped with the first backing plate of L shape, side plate front side is rotatably connected with the second backing plate of L shape, first backing plate top and second backing plate front side are slidably connected with first fixing mechanism for fixing chain stay and seat stay, and second backing plate upper end is equipped with sliding plate, sliding plate rear side is equipped with slide bar, side plate front side is equipped with the slide groove corresponding with slide bar, slide bar is slidably arranged in slide groove, and the edge of slide groove is equipped with angle scale line, side plate front side is equipped with the power mechanism of driving second backing plate rotation, bottom plate top other end is equipped with second support block, second support block top is equipped with the second fixing mechanism for fixing rear fork end.

[0006] In particular, a rotating rod is fixedly arranged at the lower end of the rear side of the second backing plate, and the rotating rod is rotatably connected to the front side of the side plate.

[0007] Particularly, the power mechanism comprises a first connecting seat arranged at the top of the front side of the side plate, a hydraulic cylinder rotatably connected in the first connecting seat, and a second connecting seat arranged at the rear side of the second backing plate, and the telescopic end of the hydraulic cylinder is rotatably connected with the second connecting seat.

[0008] Particularly, the first fixing mechanism comprises a clamping sleeve, a clamping plate slidably connected in the clamping sleeve, a first adjusting rod threadedly connected at one side of the clamping sleeve, and the first adjusting rod rotatably connected with the clamping plate, and the chain support and the seat support are arranged in the corresponding clamping sleeves and clamped and fixed by the clamping plate.

[0009] Particularly, the clamping sleeves are respectively slidably arranged at the top of the first backing plate and the front side of the second backing plate, and the end plates of the first backing plate and the second backing plate are respectively threadedly connected with second adjusting rods, and the second adjusting rods are rotatably connected with the clamping sleeves.

[0010] Particularly, the second fixing mechanism comprises a positioning block arranged at one end of the top of the second supporting block and in an inverted F shape, a lower plate of the positioning block is provided with a slot matched with the end of the rear fork, the end of the rear fork is inserted into the slot, and the slotted end of the rear fork is clamped on the upper plate of the positioning block, the other end of the top of the positioning block is provided with a gas cylinder, the telescopic end of the gas cylinder is provided with a lifting plate at the top, the bottom of the lifting plate is provided with a pressing rod, and the bottom of the pressing rod is threadedly connected with a pressing sleeve sleeved on the top of the end of the rear fork.

[0011] Particularly, the bottom of the lifting plate is provided with a guide rod, and the top of the vertical plate of the positioning block is provided with a guide hole, and the guide rod is slidably inserted into the guide hole.

[0012] The auxiliary tool has the advantages that the chain support, the seat support and the end of the rear fork can be welded in a vertical assembly mode, double-sided welding is convenient, the workpiece does not need to be turned over, time and labor are saved, size deviation or damage caused by turning operation is reduced, the angle adjustment operation between the chain support and the seat support is simple, the welding angle can be accurately set and locked by the operator, and the whole is convenient to use. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structural schematic view of the utility model;

[0014] Figure 2 It is Figure 1 It is an enlarged schematic view of A in the middle;

[0015] In the drawing: 1-bottom plate; 2-side plate; 3-first supporting block; 4-first backing plate; 5-second backing plate; 6-chain support; 7-seat support; 8-sliding plate; 9-sliding rod; 10-sliding groove; 11-second supporting block; 12-end of rear fork; 13-first connecting seat; 14-hydraulic cylinder; 15-second connecting seat; 16-clamping sleeve; 17-clamping plate; 18-first adjusting rod; 19-second adjusting rod; 20-positioning block; 21-slot; 22-gas cylinder; 23-lifting plate; 24-pressing rod; 25-pressing sleeve; 26-guide rod;

[0016] The utility model will be described below in detail in combination with the embodiments of the utility model and the accompanying drawings. DETAILED DESCRIPTION

[0017] The utility model will be described below in detail in combination with the embodiments of the utility model and the accompanying drawings.

[0018] As Figures 1-2 The utility model discloses a welding auxiliary tool for bicycle rear triangle, including bottom plate 1, the bottom plate 1 top rear side is equipped with side plate 2, and the bottom plate 1 top one end is equipped with first support block 3, and the first support block 3 top is equipped with the L-shaped first backing plate 4, and the side plate 2 front side is rotatably connected with the L-shaped second backing plate 5, and the second backing plate 5 rear side lower end is fixed with the rotating rod, and the rotating rod is rotatably connected at the side plate 2 front side, and the second backing plate 5 upper end is equipped with sliding plate 8, and the sliding plate 8 rear side is equipped with sliding rod 9, and the side plate 2 front side is equipped with the sliding groove 10 corresponding with sliding rod 9, and the sliding rod 9 is slidably arranged in the sliding groove 10, and the edge of sliding groove 10 is equipped with angle scale line, and the side plate 2 front side is equipped with the power mechanism of driving the rotation of second backing plate 5, and the power mechanism includes the first connecting seat 13 of setting at the side plate 2 front side top, and the hydraulic cylinder 14 is rotatably connected in the first connecting seat 13, and the second connecting seat 15 is equipped at the rear side of second backing plate 5, and the telescopic end of hydraulic cylinder 14 is rotatably connected with second connecting seat 15. Through the rotation of second backing plate 5 driven by hydraulic cylinder 14, the angle between chain stay 6 and seat stay 7 can be viewed in real time according to angle scale line, and the convenience of use is high.

[0019] The first backing plate 4 top and the second backing plate 5 front side are slidably connected with the first fixing mechanism for fixing chain stay 6 and seat stay 7 respectively, and the first fixing mechanism includes the clamping sleeve 16, the clamping sleeve 16 is slidably connected with the clamping plate 17, one side of clamping sleeve 16 is threadedly connected with the first adjusting rod 18, the first adjusting rod 18 is rotatably connected with the clamping plate 17, chain stay 6 and seat stay 7 are placed in the corresponding clamping sleeve 16 and are clamped and fixed through clamping plate 17, the clamping sleeve 16 is slidably arranged at the top of first backing plate 4 and the front side of second backing plate 5 respectively, and the end plate of first backing plate 4 and second backing plate 5 is threadedly connected with the second adjusting rod 19 respectively, and the second adjusting rod 19 is rotatably connected with the clamping sleeve 16. Chain stay 6 and seat stay 7 are fixed conveniently, and can also be fine-tuned according to the length difference, and the use is convenient.

[0020] The other end of the top of the bottom plate 1 is provided with a second supporting block 11, and the top of the second supporting block 11 is provided with a second fixing mechanism for fixing the rear fork end 12, and the second fixing mechanism comprises a positioning block 20 arranged at one end of the top of the second supporting block 11 and in an inverted F shape, and the lower plate of the positioning block 20 is provided with a slot 21 matched with the rear fork end 12, the rear fork end 12 is inserted into the slot 21, and the slotted groove of the rear fork end 12 is clamped on the upper plate of the positioning block 20, and the other end of the top of the positioning block 20 is provided with a pneumatic cylinder 22, the top of the telescopic end of the pneumatic cylinder 22 is provided with a lifting plate 23, the bottom of the lifting plate 23 is provided with a pressing rod 24, the bottom of the pressing rod 24 is threadedly connected with a pressing sleeve 25 sleeved on the top of the rear fork end 12, the bottom of the lifting plate 23 is provided with a guide rod 26, the vertical plate of the positioning block 20 is provided with a guide hole, and the guide rod 26 is slidably inserted into the guide hole. The positioning block 20 and the rear fork end 12 are arranged in a profiled matching mode, and the positioning and fixing effect is good.

[0021] During work, the rear fork end 12 is inserted on the positioning block 20 and is tightly fixed through the pressing sleeve 25, then the chain support 6 is placed in the clamp sleeve 16 on the first base plate 4 and is tightly fixed through the clamping plate 17, the seat support 7 is placed in the clamp sleeve 16 on the second base plate 5 and is fixed through the clamping plate 17, then the hydraulic cylinder 14 is driven to rotate, the angle between the chain support 6 and the seat support 7 is adjusted, the seat support 7 is butted with the rear fork end 12 by rotating the second adjusting rod 19, at this time, the chain support 6, the seat support 7 and the rear fork end 12 are assembled, and welding can be performed on the butt joint, since the chain support 6, the seat support 7 and the rear fork end 12 are assembled in a vertical mode, the butt joint is convenient to weld from the front surface and the back surface, and the workpiece does not need to be turned over, so that the chain support 6 is convenient to use.

[0022] By using the auxiliary tool, the chain support 6, the seat support 7 and the rear fork end 12 of the rear triangle can be welded in a vertical assembly mode, and double-sided welding is convenient, the workpiece does not need to be turned over, time and labor are saved, size deviation or damage caused by turning operation is reduced, meanwhile, the vertical assembly allows the welder to work continuously in a fixed position without frequent adjustment of the position of the workpiece, so that the welding speed and the working efficiency are greatly improved, if necessary, multiple welders can simultaneously weld from different angles, so that the welding time is further shortened, in the welding process, the operator can more easily observe the welding condition from various angles, and any problem can be found and corrected in time, and the angle adjustment operation between the chain support 6 and the seat support 7 is simple, so that the operator is facilitated to accurately set and lock the welding angle, and the whole is convenient to use.

[0023] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0024] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0025] In the utility model, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or can communicate with each other; can be directly connected, or can be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise specifically limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] The utility model has been described above in conjunction with the drawings, and obviously the specific implementation of the utility model is not limited by the above mode, as long as various improvements are made by adopting the method concept and technical scheme of the utility model, or directly applied to other occasions without improvement, which is within the protection scope of the utility model.

Claims

1. A welding auxiliary tool for a bicycle rear triangle, comprising a bottom plate (1), a side plate (2) is arranged on the top rear side of the bottom plate (1), characterized in that, The first support block (3) is arranged at one end of the top of the bottom plate (1), and the first support block (3) is provided with an L-shaped first backing plate (4) at the top. The side plate (2) is provided with an L-shaped second backing plate (5) which is rotatably connected to the front side. The first backing plate (4) and the second backing plate (5) are respectively provided with a first fixing mechanism for fixing the chain support (6) and the seat support (7). The second backing plate (5) is provided with a sliding plate (8) at the upper end. The sliding plate (8) is provided with a sliding rod (9) at the rear side. The side plate (2) is provided with a sliding groove (10) corresponding to the sliding rod (9) at the front side. The sliding rod (9) is slidably arranged in the sliding groove (10). The sliding groove (10) is provided with an angle scale line at the edge. The side plate (2) is provided with a power mechanism for driving the second backing plate (5) to rotate. The other end of the top of the bottom plate (1) is provided with a second support block (11). The second support block (11) is provided with a second fixing mechanism for fixing the rear fork end (12) at the top.

2. A welding aid for a bicycle rear triangle as defined in claim 1, characterized in that The second backing plate (5) is provided with a rotating rod at the lower end of the rear side. The rotating rod is rotatably connected to the front side of the side plate (2).

3. A welding aid for a bicycle rear triangle as defined in claim 1, characterized in that The power mechanism comprises a first connecting seat (13) arranged at the top of the front side of the side plate (2). The first connecting seat (13) is rotatably connected with a hydraulic cylinder (14). The second backing plate (5) is provided with a second connecting seat (15). The extension end of the hydraulic cylinder (14) is rotatably connected with the second connecting seat (15).

4. A welding aid for a bicycle rear triangle as defined in claim 1, wherein The first fixing mechanism comprises a clamping sleeve (16). The clamping sleeve (16) is slidably connected with a clamping plate (17). The clamping sleeve (16) is threadedly connected with a first adjusting rod (18) at one side. The first adjusting rod (18) is rotatably connected with the clamping plate (17). The chain support (6) and the seat support (7) are arranged in the corresponding clamping sleeve (16) and are clamped and fixed by the clamping plate (17).

5. A welding aid for a bicycle rear triangle as defined in claim 4, characterized in that The clamping sleeve (16) is slidably arranged at the top of the first backing plate (4) and the front side of the second backing plate (5). The end plate of the first backing plate (4) and the second backing plate (5) is threadedly connected with a second adjusting rod (19). The second adjusting rod (19) is rotatably connected with the clamping sleeve (16).

6. A welding aid for a bicycle rear triangle as defined in claim 1, wherein The second fixing mechanism comprises a positioning block (20) arranged at one end of the top of the second support block (11) in an inverted F shape. The lower plate of the positioning block (20) is provided with a slot (21) matched with the rear fork end (12). The rear fork end (12) is inserted into the slot (21). The slotted groove of the rear fork end (12) is clamped on the upper plate of the positioning block (20). The other end of the top of the positioning block (20) is provided with an air cylinder (22). The extension end of the air cylinder (22) is provided with a lifting plate (23) at the top. The lifting plate (23) is provided with a pressing rod (24) at the bottom. The bottom of the pressing rod (24) is threadedly connected with a pressing sleeve (25) arranged on the top of the rear fork end (12).

7. A welding aid for a bicycle rear triangle as defined in claim 6, characterized in that The lifting plate (23) is provided with a guide rod (26) at the bottom. The vertical plate of the positioning block (20) is provided with a guide hole. The guide rod (26) is slidably inserted into the guide hole.

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