Assembling and welding tool for S-shaped connecting bent pipe on cooling system

Abstract

The utility model discloses an assembling and welding tool for an S-shaped connecting elbow on a cooling system, which comprises a base plate, a stand column fixedly arranged on the front side of the left end of the upper end face of the base plate, a first supporting plate fixedly arranged on the front side of the middle of the upper end face of the base plate, a second supporting plate fixedly arranged on the middle of the right end of the upper end face of the base plate, and a fourth supporting plate and a third supporting plate fixedly arranged on the rear side of the right end of the upper end face of the base plate. An L-shaped step groove used for positioning an outer hexagonal connector is formed in the upper end of the stand column, a first arc-shaped groove used for positioning the left end of a first supporting bent pipe is formed in the upper end face of the first supporting plate, and a second arc-shaped groove used for positioning the right end of the first supporting bent pipe is formed in the upper end face of the second supporting plate. A plurality of second inserting holes corresponding to the mounting holes in the flange plate one to one are formed in the upper end of the third supporting plate, second bolts are inserted into the second inserting holes, and third bolts used for positioning the connecting nuts are inserted into third inserting holes in the upper end of the fourth supporting plate. The positioning difficulty during splicing of all parts is remarkably reduced, it is guaranteed that the structural stability and appearance accuracy of finished S-shaped connecting bent pipes are good, the qualification rate of the finished products is high, and the welding efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline welding equipment technology, specifically to an assembly and welding fixture for S-shaped connecting bends in a cooling system. Background Technology

[0002] The cooling system of an electric locomotive is a crucial component for ensuring its efficient and sustained operation. Each locomotive's converter cabinet must be equipped with a separate cooling system. During operation, the cooling system must be maintained according to regulations, including cleaning and adding coolant, to ensure the proper functioning of both the cooling system and the locomotive.

[0003] In the cooling system of electric locomotives, the various cooling devices are connected by pipes, and when installation space is limited, connecting bends of various shapes are also used. For example... Figures 1-4 As shown, an S-shaped connecting bend for a cooling system includes a bend a and a bend b. A hexagonal connector c is coaxially welded to the left end of bend a. The right end of bend a is welded and fixedly connected to the left end of bend b. A flange connector d is coaxially welded to the right end of bend b. A through hole b-1 is provided on the rear side wall of the right end of bend b. A connecting nut e, coaxially communicating with the through hole b-1, is welded to the outer rear side wall of the right end of bend b. The hexagonal connector c includes a connecting pipe head c-2 and a hexagonal connector c-2, which are coaxially and sequentially connected together. The end cap c-1 and the connecting head c-3 are coaxially butt-welded to the left end of the bend a. The outer circumferential side of the connecting head c-2 is provided with an external thread structure. The flange connector d includes a flange plate d-1 and a connecting head d-2 coaxially and vertically fixed on one side of the flange plate d-1. The connecting head d-2 is coaxially butt-welded to the right end of the bend b. The connecting nut e has a concave arc surface e-1 on the upper and lower sides and a bevel surface e-2 on the outer side of the left and right edges on the end face facing the bend b. Traditional welding methods for S-shaped connecting bends often involve manual temporary splicing followed by direct welding. Therefore, the finished pipe is inevitably significantly affected by human splicing, leading to the following problems: (1) Poor positioning accuracy during splicing makes it difficult to ensure that each product meets requirements after welding, resulting in inconsistent product quality; (2) Due to the involvement of three-dimensional data piping in the S-shaped connecting bend, the connection between adjacent pipe openings is difficult, making it impossible to guarantee the uniformity and sealing of the weld after welding; (3) Manual splicing results in low welding efficiency, failing to meet the demand for large-volume deliveries. Therefore, this utility model proposes an assembly and welding fixture for S-shaped connecting bends in cooling systems to solve the aforementioned technical problems. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an assembly and welding fixture for S-shaped connecting bends in cooling systems. This fixture significantly reduces the positioning difficulty during the splicing of components, and the weld seams between components in the S-shaped connecting bend intermediate body formed by splicing and spot welding are more tightly joined. This effectively solves the problem of poor positioning accuracy in manual splicing and lays the foundation for subsequent dense welding processes, thereby ensuring excellent structural stability and shape accuracy of the finished S-shaped connecting bend. This helps improve the product quality and yield rate of each batch of S-shaped connecting bends. Compared to traditional manual splicing and welding methods, the welding process of the S-shaped connecting bend can be divided into two steps: splicing spot welding and dense welding. This facilitates assembly line operation, significantly reducing welding difficulty and improving welding efficiency, thus meeting the needs of large-volume deliveries and resulting in good economic benefits.

[0005] To achieve the above objectives, the technical solution of this utility model is to design an assembly and welding fixture for an S-shaped connecting bend in a cooling system, comprising a base plate. A column is vertically fixed to the front left side of the upper surface of the base plate. An L-shaped stepped groove is formed at the upper end of the column for positioning and supporting the external hexagonal connector on the S-shaped connecting bend in the cooling system. A support plate one is vertically fixed to the front middle of the upper surface of the base plate in the horizontal Y-axis direction. A support plate two is vertically fixed to the middle right side of the upper surface of the base plate in the horizontal X-axis direction. A support plate four is vertically fixed to the rear right side of the upper surface of the base plate, corresponding to the rear side of the support plate two. A support plate four is vertically fixed to the rear right side of the upper surface of the base plate, corresponding to the rear side of the support plate two. The support plate three is located in the Y-axis direction. The upper end of the support plate one has an arc-shaped groove one for positioning and supporting the left end of the S-shaped connecting bend of the cooling system. The upper end of the support plate two has an arc-shaped groove two for positioning and supporting the right end of the S-shaped connecting bend of the cooling system. The upper end of the support plate three has several insertion holes two that penetrate the plate body, and the several insertion holes two correspond one-to-one with the mounting holes on the flange plate of the S-shaped connecting bend of the cooling system. A pin two is inserted into the insertion hole two. The upper end of the support plate four has an insertion hole three that penetrates the plate body, and a pin three for positioning the connecting nut on the S-shaped connecting bend of the cooling system is inserted into the insertion hole three.

[0006] This utility model discloses an assembly and welding fixture for S-shaped connecting bends in cooling systems. Its use significantly reduces the positioning difficulty during the splicing of various components, and the weld seams between components in the intermediate body of the S-shaped connecting bend formed by spot welding are more tightly joined. This effectively solves the problem of poor positioning accuracy in manual splicing and lays the foundation for subsequent dense welding processes. This ensures both the structural stability and shape accuracy of the finished S-shaped connecting bend, contributing to improved product quality and yield rate for each batch. Compared to traditional manual splicing and welding methods, the welding process for S-shaped connecting bends can be divided into two steps: spot welding and dense welding. This facilitates assembly line operation, significantly reducing welding difficulty and improving welding efficiency, thus better meeting the needs of large-volume deliveries and resulting in good economic benefits.

[0007] A preferred technical solution is that the vertical sidewall of the L-shaped stepped groove has a through-hole, and a pin for positioning the hexagonal connector on the S-shaped connecting bend of the cooling system is inserted into the through-hole. In use, the hexagonal cap on the hexagonal connector of the S-shaped connecting bend overlaps the horizontal bottom surface of the L-shaped stepped groove, while the pin is inserted into the connecting head of the hexagonal connector. This further improves the positioning stability of the hexagonal connector within the L-shaped stepped groove, helping to further ensure the positioning accuracy between various components.

[0008] A further preferred technical solution is that the upper end of the support plate three is provided with a positioning hole for positioning the flange connector on the S-shaped connecting bend of the cooling system, and several insertion holes two are circumferentially distributed on the outer periphery of the positioning hole. During assembly, the flange plate of the flange connector is positioned and connected together by pins two that pass through the insertion holes two on the support plate three and the mounting holes on the flange plate. Alternatively, pins four that are compatible with the positioning holes can be inserted from right to left into the positioning hole at the upper end of the support plate three, the center hole of the flange plate, and the inside of the pipe head three, thereby further improving the positioning and installation stability of the flange connector on the support plate three and helping to further ensure the positioning accuracy between the components.

[0009] A further preferred technical solution includes a pin three comprising an end cap. On one side of the end cap, three insertion sections with progressively decreasing outer diameters are vertically fixed: insertion section one, insertion section two, and insertion section three. Insertion section one is fitted into insertion hole three on the upper end of support plate four. Insertion section two has an external thread on its outer circumferential side that matches the inner thread of the connecting nut on the S-shaped connecting bend of the cooling system. Insertion section three is fitted into through hole on the S-shaped connecting bend of the cooling system. The pin three has a clever and reasonable structural design. In use, the connecting nut is screwed onto insertion section two on pin three. This ensures a tight fit between the connecting nut and the bend two, and facilitates the positioning of the connecting nut, ensuring that the two concave arc surfaces are correspondingly located on the upper and lower sides, thereby further improving the positioning accuracy and speed of the connecting nut.

[0010] The advantages and beneficial effects of this utility model are as follows:

[0011] 1. This utility model provides an assembly and welding fixture for S-shaped connecting bends in cooling systems. Its use significantly reduces the positioning difficulty during splicing of various components, and the weld seams between components in the intermediate body of the S-shaped connecting bend formed by spot welding are more tightly joined. This effectively solves the problem of poor positioning accuracy in manual splicing and lays the foundation for subsequent dense welding processes. This ensures both the structural stability and shape accuracy of the finished S-shaped connecting bend, helping to improve the product quality and yield of each batch. Compared to traditional manual splicing and welding methods, the welding process of the S-shaped connecting bend can be divided into two steps: spot welding and dense welding. This facilitates assembly line operation, significantly reducing welding difficulty and improving welding efficiency, thus meeting the needs of large-volume deliveries and resulting in good economic benefits.

[0012] 2. The L-shaped stepped groove has a through-hole on its vertical sidewall. A pin for positioning the hexagonal connector on the S-shaped connecting bend of the cooling system is inserted into this hole. In use, the hexagonal cap on the hexagonal connector overlaps the horizontal bottom surface of the L-shaped stepped groove, while the pin is inserted into the connecting head 2 on the hexagonal connector. This further improves the positioning stability of the hexagonal connector within the L-shaped stepped groove, helping to ensure the positioning accuracy between components.

[0013] 3. The upper end of the support plate three is also provided with positioning holes for positioning the flange connector on the S-shaped connecting bend of the cooling system, and several insertion holes two are circumferentially distributed on the outer periphery of the positioning holes. During assembly, the flange plate of the flange connector is positioned and connected together by pins two that pass through the insertion holes two on the support plate three and the mounting holes on the flange plate. Alternatively, pins four that are compatible with the positioning holes can be inserted from right to left into the positioning holes at the upper end of the support plate three, the center hole of the flange plate, and the inside of the pipe head three, thereby further improving the positioning and installation stability of the flange connector on the support plate three and helping to further ensure the positioning accuracy between various components.

[0014] 4. The three-pin structure is ingeniously and reasonably designed. When in use, the connecting nut is screwed onto the second insertion section of the three-pin. On the one hand, this ensures the tightness of the connection between the connecting nut and the second bend, and on the other hand, it facilitates the positioning of the connecting nut, so that the two concave arc surfaces are located on the upper and lower sides respectively, thereby further improving the positioning accuracy and speed of the connecting nut. Attached Figure Description

[0015] Figure 1 This is a perspective view of an S-shaped connecting bend in the background technology.

[0016] Figure 2 This is a rear-view perspective perspective of an S-shaped connecting bend in the background art;

[0017] Figure 3 This is a split three-dimensional view of an S-shaped connecting bend in the background technology;

[0018] Figure 4 This is a three-dimensional view of one end of the connecting nut;

[0019] Figure 5 This is a perspective view of the assembly and welding fixture for an S-shaped connecting bend in a cooling system according to the present invention.

[0020] Figure 6 This is a 3D view of pin three;

[0021] Figure 7 This is a diagram showing the usage state of an assembly and welding fixture for an S-shaped connecting bend in a cooling system according to this utility model.

[0022] Figure 8 yes Figure 7 A magnified view of a section at point H.

[0023] In the diagram: a. Bend 1; b. Bend 2; c. External hexagonal connector; d. Flange connector; e. Connecting nut; b-1. Through hole; c-1. External hexagonal end cap; c-2. Connecting head 1; c-3. Connecting head 2; d-1. Flange plate; d-2. Connecting head 3; e-1. Concave arc surface; e-2. Bevel; 1. Base plate; 2. Column; 3. Support plate 1; 4. Support plate 2; 5. Support plate 3; 6. Support plate 4; 7. Pin 1; 8. Pin 2; 9. Pin 3; 2-1. L-shaped stepped groove; 3-1. Arc groove 1; 4-1. Arc groove 2; 5-1. Insertion hole 2; 5-2. Positioning hole; 9-1. End cap; 9-2. Insertion section 1; 9-3. Insertion section 2; 9-4. Insertion section 3. 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 Figures 5-6 As shown, this utility model is an assembly and welding fixture for an S-shaped connecting bend in a cooling system. It includes a base plate 1. A column 2 is vertically fixed to the front left side of the upper surface of the base plate 1. An L-shaped stepped groove 2-1 is formed at the upper end of the column 2 for positioning and supporting the external hexagonal connector c on the S-shaped connecting bend in the cooling system. A support plate 3 is vertically fixed to the front middle of the upper surface of the base plate 1 in the horizontal Y-axis direction. A support plate 4 is vertically fixed to the middle right side of the upper surface of the base plate 1 in the horizontal X-axis direction. A support plate 6, corresponding to the rear side of the support plate 4, is vertically fixed to the rear right side of the upper surface of the base plate 1. A support plate 5, in the horizontal Y-axis direction, is vertically fixed to the rear right side of the upper surface of the base plate 1. The upper surface of the support plate 3 is provided with an arc-shaped groove 3-1 for positioning and supporting the left end of the upper bend of the S-shaped connecting bend of the cooling system. The upper surface of the support plate 4 is provided with an arc-shaped groove 4-1 for positioning and supporting the right end of the upper bend of the S-shaped connecting bend of the cooling system. The upper end of the support plate 5 is provided with several insertion holes 5-1 that penetrate the plate body, and the several insertion holes 5-1 correspond one-to-one with the mounting holes on the flange plate d-1 of the S-shaped connecting bend of the cooling system. A pin 8 is inserted into the insertion hole 5-1. The upper end of the support plate 6 is provided with a insertion hole 3 that penetrates the plate body, and a pin 9 for positioning the connecting nut e of the S-shaped connecting bend of the cooling system is inserted into the insertion hole 3.

[0027] Preferably, the vertical sidewall of the L-shaped stepped groove 2-1 is provided with a through-hole, and a pin 7 for positioning the external hexagonal connector c on the S-shaped connecting bend of the cooling system is inserted into the through-hole.

[0028] More preferably, the upper end of the support plate 5 is provided with a positioning hole 5-2 for positioning the flange connector d of the S-shaped connecting bend on the cooling system, and a plurality of the insertion holes 5-1 are circumferentially distributed on the outer periphery of the positioning hole 5-2.

[0029] More preferably, the third pin 9 includes an end cap 9-1, on one side of which are vertically fixed a first insertion section 9-2, a second insertion section 9-3, and a third insertion section 9-4 with successively decreasing outer diameters. The first insertion section 9-2 is inserted into and adapted to the insertion hole 3 at the upper end of the support plate 6. The outer peripheral side of the second insertion section 9-3 is provided with an external thread that is adapted to the inner thread of the connecting nut e on the S-shaped connecting bend of the cooling system. The third insertion section 9-4 is inserted into and adapted to the through hole b-1 on the S-shaped connecting bend of the cooling system.

[0030] The working principle of the assembly and welding fixture for S-shaped connecting bends in a cooling system according to this utility model is as follows:

[0031] Step 1: Place the left end of the bend a inside the arc groove 3-1 at the upper end of the support plate 3, and the right end inside the arc groove 4-1 at the upper end of the support plate 4.

[0032] Step 2: Remove pin 7 from the top of column 2, place the external hexagonal connector c inside the L-shaped insertion slot 2-1 at the top of column 2, and adjust one set of edges of the external hexagonal cap c-1 to be aligned on the upper and lower sides, with the lower edge of the external hexagonal cap c-1 overlapping the horizontal bottom surface of the L-shaped insertion slot 2-1. Then, insert pin 7 from left to right into the insertion hole 1 on column 2 and the pipe head 2 c-3 of external hexagonal connector c, so that the pipe head 1 c-2 of external hexagonal connector c is connected to the left end of the bend a.

[0033] Step 3: Remove several pins 28 from the upper end of support plate 35. Fit the flange plate d-1 of flange connector d onto the upper left side of support plate 35. Clamp the bend 2b between bend 1a and flange connector d, ensuring the left end of bend 2b is aligned with the right end of bend 1a and the right end is aligned with connector 3d-2. Insert several pins 28 sequentially from right to left into the insertion holes 25-1 on the upper end of support plate 35 and the mounting holes on flange plate d-1 (see Appendix). Figure 7Alternatively, a pin four that is compatible with the positioning hole 5-2 can be inserted from right to left into the positioning hole 5-2 at the upper end of the support plate 3 5, the center hole of the flange plate d-1, and the inside of the pipe head 3 d-2.

[0034] Step 4: Remove pin 39 from the upper end of support plate 46. Place the connecting nut e against the upper end of the side of support plate 46 facing bend 2b, ensuring that the end of connecting nut e with concave arc surface e-1 aligns with the through hole b-1 on the rear side wall of bend 2d, and that the two concave arc surfaces e-1 are positioned correspondingly on the upper and lower sides. Rotate pin 39 sequentially into the insertion hole 3 on the upper end of support plate 46, the connecting nut e, and the through hole b-1 on the rear side wall of bend 2d, until pin 39 tightly abuts the connecting nut e and bend 2d (see Appendix). Figure 8 );

[0035] Step 5: Spot weld the mating points of each component together to form an S-shaped connecting bend intermediate body. Then remove pin 1 7, pin 2 8 and pin 3 9, remove the S-shaped connecting bend intermediate body and transfer it to the compact welding process for subsequent compact welding operations.

[0036] This utility model discloses an assembly and welding fixture for S-shaped connecting bends in cooling systems. Its use significantly reduces the positioning difficulty during the splicing of various components, and the weld seams between components in the intermediate body of the S-shaped connecting bend formed by spot welding are more tightly joined. This effectively solves the problem of poor positioning accuracy in manual splicing and lays the foundation for subsequent dense welding processes. This ensures both the structural stability and shape accuracy of the finished S-shaped connecting bend, contributing to improved product quality and yield rate for each batch. Compared to traditional manual splicing and welding methods, the welding process for S-shaped connecting bends can be divided into two steps: spot welding and dense welding. This facilitates assembly line operation, significantly reducing welding difficulty and improving welding efficiency, thus better meeting the needs of large-volume deliveries and resulting in good economic benefits.

[0037] 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. An assembly welding tool for an S-shaped connecting bend of a cooling system, characterized by, The system includes a substrate (1). A column (2) is vertically fixed to the front left side of the upper surface of the substrate (1). An L-shaped stepped groove (2-1) for positioning and supporting the external hexagonal connector (c) on the S-shaped connecting bend of the cooling system is provided on the upper end of the column (2). A support plate one (3) located in the horizontal Y-axis direction is vertically fixed to the front middle part of the upper surface of the substrate (1). A support plate two (4) located in the horizontal X-axis direction is vertically fixed to the middle right end of the upper surface of the substrate (1). A support plate four (6) located behind the support plate two (4) is vertically fixed to the rear right end of the upper surface of the substrate (1). A support plate three (5) located in the horizontal Y-axis direction is vertically fixed to the rear right end of the upper surface of the substrate (1). The upper surface of the support plate one (3) is provided with... The support plate 2 (4) has an arc groove 1 (3-1) on the left end of the upper bend of the S-shaped connecting bend of the cooling system. The upper end of the support plate 2 (4) has an arc groove 2 (4-1) on the right end of the upper bend of the S-shaped connecting bend of the cooling system. The upper end of the support plate 3 (5) has several insertion holes 2 (5-1) that penetrate the plate body. The insertion holes 2 (5-1) correspond one-to-one with the mounting holes on the flange plate (d-1) of the S-shaped connecting bend of the cooling system. The insertion holes 2 (5-1) are inserted with pins 2 (8). The upper end of the support plate 4 (6) has an insertion hole 3 that penetrates the plate body. The insertion holes 3 are inserted with pins 3 (9) that are used to position the connecting nut (e) of the S-shaped connecting bend of the cooling system.

2. The assembly welding tool for the S-shaped connecting bend of the cooling system according to claim 1, characterized in that, The L-shaped stepped groove (2-1) has a through-hole on its vertical sidewall. A pin (7) for positioning the external hexagonal connector (c) on the S-shaped connecting bend of the cooling system is inserted into the through-hole.

3. The assembly welding tool for cooling system S-shaped connecting bend according to claim 2, characterized in that, The upper end of the support plate three (5) is also provided with a positioning hole (5-2) for positioning the flange connector (d) on the S-shaped connecting bend of the cooling system, and several of the insertion holes two (5-1) are circumferentially distributed on the outer periphery of the positioning hole (5-2).

4. The assembly welding tool for cooling system S-shaped connecting bend according to claim 3, characterized in that, The pin three (9) includes an end cap (9-1). The end cap (9-1) has three insertion sections with decreasing outer diameters, namely insertion section one (9-2), insertion section two (9-3), and insertion section three (9-4), which are vertically fixed on one side of the end cap (9-1). Insertion section one (9-2) is inserted into the insertion hole three at the upper end of the support plate four (6). Insertion section two (9-3) has an external thread on its outer peripheral side that is adapted to the inner thread of the connecting nut (e) on the S-shaped connecting bend of the cooling system. Insertion section three (9-4) is inserted into the through hole (b-1) on the S-shaped connecting bend of the cooling system.

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