A welding tool for coupler bracket on rail transit bogie

Abstract

The utility model discloses a kind of welding tool for coupler bracket on rail transit bogie, including substrate, substrate upper end face center is fixed with core platform assembly, two vertical plate three, two vertical cylinder and two vertical plate four are also fixed on substrate upper end face, two vertical cylinder are correspondingly distributed in the left front side and right rear side of core platform assembly with central symmetry structure, one vertical cylinder corresponds with two through holes two on the left front side of coupler bracket, another vertical cylinder corresponds with two through holes two on the right rear side of coupler bracket, two vertical plate three and two vertical plate four are correspondingly distributed in the left and right two end portions of substrate with central symmetry structure, two groups of positioning locking assembly one are equipped on vertical plate three, and one group of positioning locking assembly two is equipped on vertical plate four upper end.Effectively improve the positioning splicing precision of each component, splicing efficiency, play the role of preventing stupid, make the coupler bracket of welding forming meet drawing requirement, high qualified rate, save finishing process, significantly shorten processing cycle, save processing and manufacturing cost.

Description

Technical Field

[0001] This utility model relates to the technical field of welding equipment for bogie upper coupling brackets, and specifically to a welding fixture for bogie upper coupling brackets in rail transit. Background Technology

[0002] like Figure 1 The diagram shows a coupling bracket, a major load-bearing component on the bogie of a rail transit vehicle. It includes a base plate A, a top plate B, and a central cylinder C. The lower end of the central cylinder C is threaded through and welded into the central hole of the base plate A, and the upper end is threaded through and welded into the central hole of the top plate B. Vertical plates M (located on the outer side) and N (located on the inner side) are respectively vertically welded to the left and right ends of the base plate A and top plate B. Both the base plate A and top plate B are central... The two plates are symmetrical, with right-angled notches H at their left and right ends. Ear blocks D, perpendicular to their right-angled edges, are welded and fixed inside the right-angled notches H. A pair of strip blocks E are welded and fixed to the upper and lower sides of the left and right ends of the bottom plate A and top plate B, respectively. Each pair of strip blocks E and its corresponding ear block D are welded and fixed together. The outer edges of the pair of strip blocks E are flush with the outer edges of the ends of the bottom plate A or top plate B. The ear blocks D are positioned away from the bottom plate A or top plate. A pair of horizontally oriented mounting holes D-1 are provided on one vertical end face of the top plate B; an "n"-shaped vertical plate F is welded to the left and right ends of the upper end face of the top plate B, respectively. The lower end of one leg of the "n"-shaped vertical plate F is welded and fixed to the top of a corresponding lug D. On the two vertical edges of the "n"-shaped vertical plate F facing the center hole of the top plate B, a right-angled triangular vertical plate G is welded and fixed to the lower side and a lug L is fixed to the upper side. The lug L has a through-hole. The two sides have through holes L-1. The upper end of the "n"-shaped vertical plate F has a pair of through holes F-1 that are connected to the through holes L-1 on the corresponding ear block L. The outer side of the right-angled triangular vertical plate G has a notch groove 2 at one end near the corner. The right-angled triangular vertical plate G is connected and welded to the top of a corresponding ear block D through the notch groove 2. The bottom plate A and the top plate B have through holes J located on the left front side and right rear side outside the center hole of the two plates, respectively.

[0003] Currently, the aforementioned coupling bracket for rail transit bogies is welded by manual splicing. The specific operation is as follows: First, the components are manually assembled. Then, tools such as C-clamps and pliers are used to clamp and fix the assembled components. The components are then welded together to form a rough coupling bracket. In order to ensure that the welded coupling bracket meets the tolerance requirements of the drawings, a machining process is also required for fine finishing. The problems with this manual splicing and welding method are: (1) The product involves many components and has a complex structure. It is difficult to position the components manually. Moreover, the assembly process is greatly affected by subjective human factors, making it difficult to ensure that each welded coupling bracket meets the requirements of the drawings, and the product quality is difficult to guarantee; (2) There are no error prevention measures, which can easily lead to problems such as incorrect assembly and omissions, resulting in a high scrap rate for the coupling bracket; (3) The efficiency of manual splicing and welding is low. In addition, a machining fine finishing process is required, resulting in low overall processing efficiency of the coupling bracket and high labor costs. Therefore, this utility model proposes a welding fixture for a coupling bracket on a rail transit bogie, in order to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects in the existing technology and provide a welding fixture for a coupling bracket on a rail transit bogie. During use, all components are positioned and assembled on this fixture before being welded together. Compared to manual assembly, this significantly reduces the difficulty and labor involved in assembly, effectively improving the positioning accuracy and efficiency of each component. It also serves as a foolproof method, effectively preventing incorrect or missing components. This ensures that the welded coupling bracket has accurate positioning of all components, dimensions that meet drawing requirements, and a high product qualification rate. It eliminates the need for machining and finishing processes, significantly shortens the overall processing cycle of the coupling bracket, and helps save on manufacturing costs, resulting in good economic benefits.

[0005] To achieve the above objectives, the technical solution of this utility model is to design a welding fixture for a coupling bracket on a rail transit bogie, comprising a base plate. A core platform assembly for positioning the central cylinder of the coupling bracket is fixedly disposed at the center of the upper end face of the base plate. Two vertical plates (three), two vertical cylinders, and two vertical plates (four) are also fixedly disposed on the upper end face of the base plate. The two vertical cylinders are centrally symmetrically distributed on the left front side and right rear side of the core platform assembly, and one of the vertical cylinders on the left front side is connected to two through holes on the left front side of the coupling bracket. The second vertical cylinder, located on the right rear side, corresponds to the two through holes on the right rear side of the connector bracket. The two vertical plates three and two vertical plates four are centrally symmetrically distributed at the left and right ends of the base plate. The vertical plate three is provided with two sets of positioning and locking components one for positioning the two lugs one corresponding to the left or right end of the connector bracket. The upper end of the vertical plate four is provided with a set of positioning and locking components two for positioning an "n"-shaped vertical plate, two right-angled triangular vertical plates and two lugs two on the left or right end of the connector bracket.

[0006] This utility model discloses a welding fixture for a coupling bracket on a rail transit bogie. During use, all components are positioned and assembled on this fixture before being welded together. Compared to manual assembly, this significantly reduces the difficulty and labor involved in assembly, effectively improving the positioning accuracy and efficiency of each component. It also serves as a foolproof method, preventing incorrect or missing components. This results in precise positioning of all components on the welded coupling bracket, ensuring dimensions meet drawing requirements and a high product qualification rate. It eliminates the need for machining and finishing processes, significantly shortening the overall processing cycle of the coupling bracket and helping to save on manufacturing costs, thus offering good economic benefits.

[0007] A preferred technical solution is that the core platform assembly includes a circular pad fixed to the center of the upper surface of the substrate and a circular core platform coaxially fixed to the center of the upper surface of the circular pad. The circular core platform is fitted and adapted to the end of the central cylinder on the connector bracket, and the outer diameter of the circular pad is greater than the outer diameter of the end of the central cylinder on the connector bracket. The core platform assembly has a clever and reasonable structural design. The circular pad acts as a gasket, raising each component assembled into the connector bracket by a certain distance, thereby reserving space for welding operations on the lower components and improving the convenience of welding operations.

[0008] A preferred technical solution is that the upper and lower ends of the vertical plate three are respectively provided with a pair of horizontally oriented positioning holes one. Screws pass through the positioning holes one. The pair of positioning holes one at the upper end of the vertical plate three corresponds to a pair of mounting holes one on the upper side lug one at the left or right end of the connector bracket; the pair of positioning holes one at the lower end of the vertical plate three corresponds to a pair of mounting holes one on the lower side lug one at the left or right end of the connector bracket. The pair of positioning holes one at the upper or lower end of the vertical plate three and the screws passing through them constitute a positioning and locking assembly one. The positioning assembly one has a clever and reasonable structural design. The lug one is positioned and locked onto the vertical plate three by the screws passing through the corresponding positioning holes one and mounting holes one on the vertical plate three and lug one. The positioning method is simple, has good firmness, and effectively prevents relative displacement between the lug one and the top plate or bottom plate during welding, ensuring good accuracy of the lug one after welding on the top plate or bottom plate.

[0009] A preferred technical solution is that the upper end of the four vertical plates is provided with a pair of horizontally oriented positioning holes. Positioning pins are inserted into the positioning holes, and the pair of positioning holes correspond to a pair of through holes on an "n"-shaped vertical plate at the left or right end of the connector bracket. The pair of positioning holes and the positioning pins inserted inside them constitute a set of positioning and locking components. The positioning and locking components have a clever and reasonable structural design. An "n"-shaped vertical plate, two right-angled triangular vertical plates, and two ear blocks are pre-assembled and welded together to form a set of intermediate components. Using this structure, the positioning and locking components and C-clamps can accurately position and clamp the set of intermediate components onto the four vertical plates. The operation is simple and highly practical.

[0010] A further preferred technical solution is that the substrate has a rectangular structure, and the two vertical plates three and two vertical plates four are respectively centrally symmetrically distributed at the corners of the left and right ends of the substrate.

[0011] A further preferred technical solution is that the substrate has a second mounting hole at one corner. The substrate can be fixedly mounted on the welding worktable by screws inserted into the second mounting hole, which is simple and convenient.

[0012] The advantages and beneficial effects of this utility model are as follows:

[0013] 1. This utility model discloses a welding fixture for a coupling bracket on a rail transit bogie. During use, all components are positioned and assembled on this fixture before being welded together. Compared to manual assembly, this significantly reduces the difficulty and labor involved in assembly, effectively improving the positioning accuracy and efficiency of each component. It also serves as a foolproof method, preventing incorrect or missing components. This ensures precise positioning of all components on the welded coupling bracket, conforms to the dimensions of the drawings, and has a high product qualification rate. It eliminates the need for machining and finishing processes, significantly shortens the overall processing cycle of the coupling bracket, and helps save on manufacturing costs, resulting in good economic benefits.

[0014] 2. The core platform assembly includes a circular pad fixed to the center of the upper surface of the substrate and a circular core platform coaxially fixed to the center of the upper surface of the circular pad. The circular core platform is fitted and adapted to the end of the central cylinder on the connector bracket, and the outer diameter of the circular pad is greater than the outer diameter of the end of the central cylinder on the connector bracket. The core platform assembly has a clever and reasonable structural design. The circular pad acts as a gasket, raising each component assembled into the connector bracket by a certain distance, thereby reserving space for welding operations on the lower components and improving the convenience of welding operations.

[0015] 3. The positioning component has a clever and reasonable structural design. The ear block is positioned and locked on the vertical plate three by screws that pass through the corresponding positioning holes one and mounting holes one on the vertical plate three and the ear block one. The positioning method is simple and has good firmness. It effectively prevents relative displacement between the ear block one and the top plate and bottom plate during the welding process, and ensures good accuracy of the ear block one after welding on the top plate or top plate.

[0016] 4. The positioning and locking component two has a clever and reasonable structural design. One "n"-shaped vertical plate, two right-angled triangular vertical plates, and two ear blocks have been pre-assembled and welded together to form a set of intermediate accessories. The positioning and locking component two with this structure and the C-type clamp can accurately position and clamp the set of intermediate accessories on the vertical plate four. It is simple to operate and highly practical.

[0017] 5. The substrate has a second mounting hole at one corner. The substrate can be fixedly mounted on the welding workbench by screws that pass through the second mounting hole. The fixing and installation method is simple and convenient. Attached Figure Description

[0018] Figure 1 This is a perspective view of a connector bracket in the background art;

[0019] Figure 2 This is a three-dimensional view of a welding fixture for a coupling bracket on a bogie of rail transit according to the present invention;

[0020] Figure 3This is one of the usage diagrams of the welding fixture for the coupling bracket on the bogie of rail transit according to this utility model;

[0021] Figure 4 This is the second diagram showing the usage status of the welding fixture for the coupling bracket on the bogie of rail transit according to this utility model;

[0022] Figure 5 This is the third diagram showing the usage status of the welding fixture for the coupling bracket on the bogie of rail transit according to this utility model.

[0023] In the diagram: A, base plate; B, top plate; C, central cylinder; D, lug 1; D-1, mounting hole 1; E, strip block; F, "n"-shaped vertical plate; F-1, through hole 1; G, right-angled triangular vertical plate; H, right-angled notch 1; J, through hole 2; L, lug 2; L-1, through hole 3; M, vertical plate 1; N, vertical plate 2; 1, base plate; 2, core platform assembly; 3, vertical plate 3; 4, vertical cylinder; 5, vertical plate 4; 1-1, mounting hole 2; 2-1, circular pad; 2-2, circular core platform; 3-1, positioning hole 1; 3-2, screw; 3-3, washer; 5-1, positioning hole 2; 5-2, positioning pin. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0025] Example

[0026] like Figure 2 As shown, a welding fixture for a coupling bracket on a rail transit bogie includes a base plate 1. A core platform assembly 2 for positioning the central cylinder C on the coupling bracket is fixedly disposed at the center of the upper end face of the base plate 1. Two vertical plates 3, two vertical cylinders 4, and two vertical plates 5 are also fixedly disposed on the upper end face of the base plate 1. The two vertical cylinders 4 are centrally symmetrically distributed on the left front side and right rear side of the core platform assembly 2. The vertical cylinder 4 located on the left front side corresponds to the two through holes 2J on the left front side of the coupling bracket and is located on the right... The other vertical cylinder 4 on the rear side corresponds to the two through holes 2J on the right rear side of the connector bracket. The two vertical plates 3 and 4 are respectively centrally symmetrically distributed at the left and right ends of the base plate 1. The vertical plate 3 is provided with two sets of positioning and locking components 1 for positioning the two lugs 1D corresponding to the left or right end of the connector bracket. The upper end of the vertical plate 4 is provided with a set of positioning and locking components 2 for positioning an "n"-shaped vertical plate F, two right-angled triangular vertical plates G and two lugs 2L on the left or right end of the connector bracket.

[0027] Preferably, the core assembly 2 includes a circular pad 2-1 fixed to the center of the upper end face of the substrate 1 and a circular core 2-2 coaxially fixed to the center of the upper end face of the circular pad 2-1, and the circular core 2-2 is fitted and adapted to the end of the central cylinder C on the connector bracket, wherein the outer diameter of the circular pad 2-1 is greater than the outer diameter of the end of the central cylinder C on the connector bracket.

[0028] Preferably, the upper and lower ends of the vertical plate 3 are respectively provided with a pair of horizontally oriented positioning holes 3-1. Screws 3-2 pass through the positioning holes 3-1. The pair of positioning holes 3-1 at the upper end of the vertical plate 3-1 correspond to a pair of mounting holes D-1 on the upper side lug D of the left or right end of the connector bracket, and the pair of positioning holes 3-1 at the lower end of the vertical plate 3-1 correspond to a pair of mounting holes D-1 on the lower side lug D of the left or right end of the connector bracket. The pair of positioning holes 3-1 at the upper or lower end of the vertical plate 3-3 and the screws 3-2 passing through them constitute a set of the positioning and locking components. Specifically, in use, a washer 3-3 located between the vertical plate 3-3 and the lug D can also pass through the screw 3-2.

[0029] Preferably, the upper end of the vertical plate 4 5 is provided with a pair of horizontally oriented positioning holes 5-1. Positioning pins 5-2 pass through the internal parts of the positioning holes 5-1. The pair of positioning holes 5-1 correspond to a pair of through holes F-1 on an "n"-shaped vertical plate F at the left or right end of the connector bracket. The pair of positioning holes 5-1 and the positioning pins 5-2 passing through them constitute a set of positioning and locking components 2. Specifically, the vertical plate 4 5 is a "7"-shaped plate, and the positioning and locking components 2 are located on the horizontal section of the "7"-shaped plate.

[0030] More preferably, the substrate 1 has a rectangular structure, and the two vertical plates 3 and 4 are respectively centrally symmetrically distributed at the corners of the left and right ends of the substrate 1.

[0031] More preferably, the corner of the substrate 1 is provided with mounting hole 2 1-1.

[0032] The working principle of the welding fixture for the coupling bracket on the bogie of rail transit is as follows:

[0033] Step 1: Fix the substrate 1 to the welding workbench using screws that pass through the mounting hole 1-1. Fit the central cylinder C onto the circular core platform 2-2 of the core platform assembly 2. Place the lower end of the central cylinder C on the upper surface of the circular pad 2-1. Fit the bottom plate A onto the lower end of the central cylinder C and the top plate B onto the central cylinder C. Connect the two sets of through holes J on the left front side of both the bottom plate A and the top plate B to a vertical cylinder 4 located on the left front side of the core platform assembly 2, and connect the other set of through holes J on the right rear side to another vertical cylinder 4 located on the right rear side of the core platform assembly 2. Place a set of vertical plates M and N at designated positions on the left and right sides between the bottom plate A and the top plate B (see Appendix). Figure 3 );

[0034] Step 2: Fix a lug block 1D to the top and bottom ends of one side of each of the two upright plates 3 facing the bottom plate A and top plate B using a pair of screws 3-2 and washers 3-3. The screws 3-2 pass through the corresponding set of positioning holes 3-1 and mounting holes 1D. The lug block 1D is fitted into the right-angle notch 1H at the end of the bottom plate A or top plate B. Weld a pair of strip blocks E to the top and bottom ends of both the left and right sides of the bottom plate A and top plate B, respectively. The outer ends of the strip blocks E are flush with the outer edges of the bottom plate A or top plate B. The strip blocks E are then welded together with the corresponding lug block 1D (see Appendix). Figure 4 );

[0035] Step 3: An "n"-shaped vertical plate F, two right-angled triangular vertical plates G, and two ear blocks L have been pre-assembled and welded together to form a set of intermediate components. Place this set of intermediate components on the left end of the upper surface of the top plate B, and align the "n"-shaped vertical plate F with the corresponding vertical plate 4 5. Insert a positioning pin 5-2 into each of the two sets of through holes 1 F-1 and positioning holes 2 5-1 on the "n"-shaped vertical plate F and the vertical plate 4 5. Then, use a C-clamp to clamp the "n"-shaped vertical plate F and the vertical plate 4 5. Similarly, clamp and install another set of intermediate components onto another vertical plate 4 5 (see Appendix). Figure 5 );

[0036] Step 4: Weld all the components together to form the connector bracket, then remove the C-clamp, several screws 3-2, washers 3-3 and locating pins 5-2, and remove the connector bracket.

[0037] This utility model discloses a welding fixture for a coupling bracket on a rail transit bogie. During use, all components are positioned and assembled on this fixture before being welded together. Compared to manual assembly, this significantly reduces the difficulty and labor involved in assembly, effectively improving the positioning accuracy and efficiency of each component. It also serves as a foolproof method, preventing incorrect or missing components. This results in precise positioning of all components on the welded coupling bracket, ensuring dimensions meet drawing requirements and a high product qualification rate. It eliminates the need for machining and finishing processes, significantly shortening the overall processing cycle of the coupling bracket and helping to save on manufacturing costs, thus offering good economic benefits.

[0038] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A welding fixture for a coupling bracket on a railway bogie, characterized in that, The system includes a base plate (1). A core platform assembly (2) for positioning the central cylinder (C) on the connector bracket is fixedly mounted on the center of the upper surface of the base plate (1). Two vertical plates (3), two vertical cylinders (4), and two vertical plates (5) are also fixedly mounted on the upper surface of the base plate (1). The two vertical cylinders (4) are centrally symmetrically distributed on the left front side and right rear side of the core platform assembly (2). One vertical cylinder (4) on the left front side corresponds to the two through holes (J) on the left front side of the connector bracket, and the other vertical cylinder (4) on the right rear side corresponds to... The two through holes (J) on the right rear side of the connector bracket correspond to each other. The two vertical plates (3) and two vertical plates (5) are respectively centrally symmetrically distributed at the left and right ends of the base plate (1). The vertical plate (3) is provided with two sets of positioning and locking components for positioning the two lugs (D) on the left or right end of the connector bracket. The upper end of the vertical plate (5) is provided with a set of positioning and locking components for positioning an "n" shaped vertical plate (F), two right-angled triangular vertical plates (G) and two lugs (L) on the left or right end of the connector bracket.

2. The welding fixture for the coupling bracket on a rail transit bogie as described in claim 1, characterized in that, The core assembly (2) includes a circular pad (2-1) fixed at the center of the upper end face of the substrate (1) and a circular core (2-2) coaxially fixed at the center of the upper end face of the circular pad (2-1). The circular core (2-2) is fitted and adapted to the end of the central cylinder (C) on the connector bracket. The outer diameter of the circular pad (2-1) is greater than the outer diameter of the end of the central cylinder (C) on the connector bracket.

3. The welding fixture for the coupling bracket on a rail transit bogie as described in claim 1, characterized in that, The upper and lower ends of the vertical plate three (3) are respectively provided with a pair of horizontal positioning holes one (3-1). Screws (3-2) are inserted inside the positioning holes one (3-1). The pair of positioning holes one (3-1) at the upper end of the vertical plate three (3) corresponds to a pair of mounting holes one (D-1) on the upper side ear block one (D) at the left or right end of the connector bracket. The pair of positioning holes one (3-1) at the lower end of the vertical plate three (3) corresponds to a pair of mounting holes one (D-1) on the lower side ear block one (D) at the left or right end of the connector bracket. The pair of positioning holes one (3-1) at the upper or lower end of the vertical plate three (3) and the screws (3-2) inserted inside them constitute a set of positioning and locking components one.

4. The welding fixture for the coupling bracket on a rail transit bogie as described in claim 1, characterized in that, The upper end of the vertical plate four (5) is provided with a pair of horizontally positioned positioning holes two (5-1). A positioning pin (5-2) passes through the positioning holes two (5-1). The pair of positioning holes two (5-1) corresponds to a pair of through holes one (F-1) on an "n"-shaped vertical plate (F) at the left or right end of the connector bracket. The pair of positioning holes two (5-1) and the positioning pin (5-2) passing through them constitute a set of positioning locking components two.

5. The welding fixture for a coupling bracket on a rail transit bogie as described in any one of claims 1 to 4, characterized in that, The substrate (1) is a rectangular structure, and the two vertical plates three (3) and two vertical plates four (5) are respectively centrally symmetrically distributed at the corners of the left and right ends of the substrate (1).

6. The welding fixture for the coupling bracket on a rail transit bogie as described in claim 5, characterized in that, The substrate (1) has a mounting hole 2 (1-1) at its corner.

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