Railway vehicle cab supporting piece assembling and welding tool

Abstract

The utility model discloses an assembling and welding tool for a supporting piece of a cab of a railway vehicle, which belongs to the technical field of mechanical manufacturing and comprises a workbench, a first clamping mechanism, a second clamping mechanism and a turnover mechanism, and the first clamping mechanism and the second clamping mechanism are respectively arranged on the front side and the back side of the workbench, and the turnover mechanism is arranged on the side face of the workbench. The first clamping mechanism used for clamping the rail vehicle stand columns and the second clamping mechanism used for clamping the rail vehicle longitudinal beams are arranged on the front face and the back face of the workbench respectively, and multiple sections of stand columns and multiple sections of longitudinal beams can be clamped on the same workbench in cooperation with the first supporting part and the second supporting part; by turning over the workbench, it can be guaranteed that welding seams of vertical column and longitudinal beam assembly welding are kept at the vertically-downward position for welding, the quality of the welding seams is guaranteed, and welding deformation caused by multiple times of clamp disassembly and assembly is reduced; meanwhile, the tool can achieve alternate welding of the stand columns and the longitudinal beams, and time waste caused by the fact that welders wait for welding seam cooling is reduced.

Description

Technical Field

[0001] The utility model relates to a welding fixture for assembling a cab support member of a rail vehicle, belonging to the technical field of mechanical manufacturing. Background Art

[0002] The front column and the longitudinal beam are important support structural members of the aluminum alloy subway cab skeleton; during the production process, on the one hand, due to the lack of a suitable fixture, the fixture needs to be disassembled and assembled multiple times during the welding process of the components, resulting in low production efficiency; on the other hand, due to the high requirements for the flatness and contour of the front column and the longitudinal beam after welding, and the large deformation of the aluminum alloy after welding, the size after welding exceeds the standard and is difficult to adjust and repair. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a welding fixture for assembling a cab support member of a rail vehicle, which can avoid disassembling and assembling the fixture multiple times when welding the columns and longitudinal beams of the rail vehicle, simultaneously clamp the columns and the longitudinal beams for welding, reduce the welding deformation caused by multiple disassembly and assembly of the fixture, and solve the problems of low efficiency caused by multiple disassembly and assembly of the fixture when welding the columns and longitudinal beams of the current subway cab; and the difficulty in adjusting and repairing the deformation of the columns and longitudinal beams after welding.

[0004] To achieve the above object / to solve the above technical problems, the utility model is implemented by the following technical solution: a welding fixture for assembling a cab support member of a rail vehicle, including a workbench, a first clamping mechanism respectively arranged on different planes of the workbench for clamping the columns of the rail vehicle and a second clamping mechanism for clamping the longitudinal beams of the rail vehicle, and a turning mechanism arranged on the side of the workbench for adjusting the clamping angles of the first clamping mechanism and the second clamping mechanism;

[0005] The first clamping mechanism includes a plurality of first clamping parts arranged on the workbench along the contour of the columns of the rail vehicle and a first supporting part arranged on the workbench corresponding to the first clamping parts;

[0006] The first clamping part is used to provide a vertical pressure to clamp the columns of the rail vehicle;

[0007] The second clamping mechanism includes a support seat arranged on the workbench, a plurality of second clamping parts arranged on the support seat along the contour of the longitudinal beams of the rail vehicle and a second supporting part corresponding to the second clamping parts;

[0008] The second clamping part is used to provide a vertical pressure to clamp the longitudinal beams.

[0009] Optionally, the turning mechanism includes a driving part, a driven part arranged on the side of the workbench, an adjusting part arranged on the driven part and a locking mechanism; the driving part drives the driven part to drive the workbench to deflect, and the driven part is locked through the locking mechanism and the adjusting mechanism.

[0010] Optionally, the driving part includes a manual speed reducer and a turntable arranged at the power input end of the manual speed reducer; the power output end of the manual speed reducer is connected to the driven part.

[0011] Optionally, the driven part includes connecting seats symmetrically arranged on both sides of the workbench and driven shafts arranged on the connecting seats, and the driven shafts are connected to the workbench.

[0012] Optionally, the adjusting part includes an adjusting disc arranged on the driven shaft and positioning holes arranged on the connecting seats. A plurality of adjusting holes are arranged on the adjusting disc, and the locking mechanism is respectively connected to the adjusting holes and the positioning holes.

[0013] Optionally, the locking mechanism includes a positioning pin head, a positioning pin seat matching the positioning pin head, and a chain; the positioning pin head passes through the adjusting hole and is fixedly connected to the adjusting disc through the chain, and the positioning pin seat is fixedly connected to the positioning hole through a fastener.

[0014] Optionally, the first clamping part includes a base, a connecting arm arranged on the base, and a pressing rod movably arranged on the connecting arm; the base is fixedly connected to the workbench, and by rotating the pressing rod, the pressing rod moves perpendicular to the workbench on the connecting arm.

[0015] Optionally, the first supporting part includes a plurality of first bases and a plurality of support plate groups adapted to the first bases; the first bases are fixedly connected to the workbench, the support plate group includes a plurality of stacked plate bodies, and the plate bodies are connected by fasteners.

[0016] Optionally, the first supporting part further includes a plurality of jacking mechanisms for limiting and clamping the columns or longitudinal beams of the railway vehicle.

[0017] Optionally, the jacking mechanism includes a second base and a jacking rod movably arranged on the second base. By rotating the jacking rod, the jacking rod moves longitudinally on the second base.

[0018] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0019] 1. In the present utility model, a first clamping mechanism is arranged on different planes of the workbench to clamp the upright columns of the rail vehicle, and a second clamping mechanism is arranged to clamp the longitudinal beams of the rail vehicle. A plurality of first clamping parts of the first clamping mechanism are distributed along the contour of the upright column, and a plurality of second clamping parts of the second clamping mechanism are distributed along the contour of the longitudinal beam. Cooperating with the first supporting part and the second supporting part, multiple sections of upright columns and longitudinal beams can be clamped simultaneously on one workbench. After the upright column or the longitudinal beam is welded, the workbench can be flipped through the flipping mechanism to transfer the welded rail vehicle support member out of the welding station, and transfer the non-welded rail vehicle support member to the welding station, enabling simultaneous clamping and welding of the upright column and the longitudinal beam, reducing the welding deformation caused by multiple disassembly and assembly of the fixture, and solving the problems of low efficiency in repeatedly disassembling the tooling fixture when welding the upright column and the longitudinal beam of the subway driver's cab and the difficulty in adjusting and repairing the deformation after welding the upright column and the longitudinal beam.

[0020] 2. The present utility model performs rapid positioning before welding and clamping and dimensional constraint during the welding process of the rail vehicle support member through the first base. The support plate group includes multiple stacked plates, and the number of stacked plates can be increased or decreased by removing the fasteners between the plates to meet the clamping requirements of rail vehicle support members with different thicknesses. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of a welding fixture for a rail vehicle driver's cab support member group provided by an embodiment of the present utility model (showing the first clamping mechanism);

[0022] Figure 2 is a schematic diagram of the overall structure of a welding fixture for a rail vehicle driver's cab support member group provided by an embodiment of the present utility model (showing the second clamping mechanism);

[0023] Figure 3 is a schematic diagram of the structure of the first clamping part of a welding fixture for a rail vehicle driver's cab support member group provided by an embodiment of the present utility model;

[0024] Figure 4 is a schematic diagram of the structure of the first supporting part of a welding fixture for a rail vehicle driver's cab support member group provided by an embodiment of the present utility model;

[0025] Figure 5 is a schematic diagram of the structure of the tightening mechanism of a welding fixture for a rail vehicle driver's cab support member group provided by an embodiment of the present utility model;

[0026] Figure 6 is a schematic diagram of the structure of the second clamping mechanism of a welding fixture for a rail vehicle driver's cab support member group provided by an embodiment of the present utility model;

[0027] Figure 7 is a schematic diagram of the structure of the connecting seat of a welding fixture for a rail vehicle driver's cab support member group provided by an embodiment of the present utility model;

[0028] Figure 8 It is a schematic structural diagram of an adjusting disc of a welding fixture for assembling cab support parts of a rail vehicle provided by an embodiment of the present invention;

[0029] Figure 9 It is a schematic structural diagram of a driving part of a welding fixture for assembling cab support parts of a rail vehicle provided by an embodiment of the present invention;

[0030] Figure 10 It is a schematic structural diagram of a positioning pin head of a welding fixture for assembling cab support parts of a rail vehicle provided by an embodiment of the present invention;

[0031] Figure 11 It is a schematic structural diagram of a positioning pin seat of a welding fixture for assembling cab support parts of a rail vehicle provided by an embodiment of the present invention;

[0032] Figure 12 It is a schematic structural diagram of a chain of a welding fixture for assembling cab support parts of a rail vehicle provided by an embodiment of the present invention;

[0033] Figure 13 It is a schematic diagram of a clamping column of a welding fixture for assembling cab support parts of a rail vehicle provided by an embodiment of the present invention;

[0034] Figure 14 It is a schematic diagram of a clamping longitudinal beam of a welding fixture for assembling cab support parts of a rail vehicle provided by an embodiment of the present invention.

[0035] In the figure: 1, workbench; 2, first clamping mechanism; 201, first clamping part; 2011, base; 2012, connecting arm; 2013, pressing rod; 202, first supporting part; 2021, first base; 2022, support plate group; 2023, jacking mechanism; 20231, second base; 20232, jacking rod; 3, second clamping mechanism; 301, support seat; 302, second clamping part; 303, second supporting part; 4, flipping mechanism; 401, driving part; 4011, manual reducer; 4012, turntable; 402, driven part; 4021, connecting seat; 4022, driven shaft; 403, adjusting part; 4031, adjusting disc; 4032, adjusting hole; 4033, positioning hole; 404, locking mechanism; 4041, positioning pin head; 4042, positioning pin seat; 4043, chain; 5, column; 6, longitudinal beam. Detailed implementation manners

[0036] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and cannot be used to limit the protection scope of the present invention.

[0037] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.

[0038] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances. Embodiment 1

[0039] As Figure 1 、 Figure 2 、 Figure 13 and Figure 14 shown, a welding fixture for assembling a cab support member of a rail vehicle includes a workbench 1, a first clamping mechanism 2, a second clamping mechanism 3, and a flipping mechanism 4. Among them, the first clamping mechanism 2 and the second clamping mechanism 3 are respectively arranged on different planes of the workbench 1. In this embodiment, the rail vehicle support members are the columns 5 and longitudinal beams 6 of the rail vehicle; the first clamping mechanism 2 is used for clamping the columns 5 of the rail vehicle, and the second clamping mechanism 3 is used for clamping the longitudinal beams 6 of the rail vehicle. Specifically:

[0040] The first clamping mechanism 2 includes a plurality of first clamping parts 201 distributed along the contour of the rail vehicle column 5 on the workbench 1 and first supporting parts 202 corresponding to the first clamping parts 201;

[0041] As Figure 3As shown, the first clamping part 201 provides longitudinal pressure to clamp the column 5 of the rail vehicle. The first clamping part 201 includes a base 2011, a connecting arm 2012, and a pressing rod 2013. The base 2011 of the first clamping part 201 is fixedly installed on the front of the workbench 1; one end of the connecting arm 2012 is pivotally connected to the base 2011, and the other end is threadedly connected to the pressing rod 2013. By rotating the pressing rod 2013, the pressing rod 2013 rises or falls perpendicular to the workbench 1 on the connecting arm 2012;

[0042] As Figure 4 shown, the first supporting part 202 includes a plurality of first bases 2021 and a plurality of support plate groups 2022 adapted to the first bases 2021; the first bases 2021 and the support plate groups 2022 of the first supporting part 202 are both fixedly installed on the front of the workbench 1. The first bases 2021 of the first supporting part 202 can quickly position the column 5 of the rail vehicle placed on the support plates. Move the column 5 on the support plate groups 2022 so that the edge of the column 5 abuts against the first bases 2021, and the column 5 can be quickly positioned. By rotating the pressing rod 2013 of the first clamping part 201 downward, the column 5 can be clamped and fixed;

[0043] As Figure 5 shown, the first supporting part 202 further includes a plurality of tightening mechanisms 2023 for limiting the column 5 of the rail vehicle. The tightening mechanisms 2023 of the first supporting part 202 are distributed along the contour of the column 5 on the front of the workbench 1. The tightening mechanism 2023 includes a second base 20231 and a tightening rod 20232. The second base 20231 is fixedly installed on the top of the workbench 1. The tightening rod 20232 is threadedly connected to the second base 20231. By rotating the tightening rod 20232, the tightening rod 20232 moves longitudinally on the second base 20231. After the column 5 is positioned, by rotating the tightening rod 20232, the column 5 can be limited longitudinally;

[0044] As Figure 6 shown, the second clamping mechanism 3 includes a support seat 301, a plurality of second clamping parts 302, and a second supporting part 303; the support seat 301 is fixedly installed on the back of the workbench 1. A plurality of second clamping parts 302 are distributed along the contour of the longitudinal beam 6 of the rail vehicle on the support seat 301. The second supporting part 303 corresponds to the second clamping part 302;

[0045] The second clamping part 302 provides longitudinal pressure to clamp the longitudinal beam 6. The structure of the second clamping part 302 is the same as that of the first clamping part 201. The structure of the second supporting part 303 is the same as that of the first supporting part 202, and the second supporting part 303 also includes a plurality of tightening mechanisms 2023, so it will not be elaborated. It should be noted that:

[0046] The base 2011 of the second clamping part 302 is fixedly installed on the front surface of the support base 301. The first base 2021 and the support plate group 2022 of the second support part 303 are both fixedly installed on the front surface of the support base 301. The positioning method of the second support part 303 for the longitudinal beam 6 is the same as that of the first support part 202 for the column 5. The tightening mechanisms 2023 of the second support part 303 are distributed along the contour of the longitudinal beam 6 at the bottom of the support base 301. The second base 20231 of the tightening mechanism 2023 of the second support part 303 is fixedly installed on the front surface of the support base 301. The tightening mechanism 2023 of the second support part 303 is used to limit the longitudinal beam 6, and the method of the tightening mechanism 2023 of the second support part 303 for limiting the longitudinal beam 6 is the same as that of the tightening mechanism 2023 of the first support part 202 for limiting the column 5.

[0047] The flipping mechanism 4 is arranged on the side of the surface of the workbench 1 and is used to rotate the workbench 1 to adjust the clamping angles of the first clamping mechanism 2 and the second clamping mechanism 3. Specifically:

[0048] As Figure 7 、 Figure 8 And Figure 9 shown, the flipping mechanism 4 includes a driving part 401, a driven part 402, an adjusting part 403 and a locking mechanism 404. The driven part 402 includes connecting seats 4021 symmetrically arranged on both sides of the workbench 1 and a driven shaft 4022 arranged on the connecting seats 4021. The driving part 401 includes a manual reducer 4011 and a turntable 4012 installed at the power input end of the manual reducer 4011. In this embodiment, the driven shaft 4022 is installed on the connecting seat 4021 through a bearing, and the driven shaft 4022 is fixedly connected to the workbench 1. The adjusting part 403 includes an adjusting disk 4031 fixedly connected to the driven shaft 4022 on the left side of the workbench 1 and a positioning hole 4033 opened at the top of the connecting seat 4021 on the left side of the workbench 1. The adjusting disk 4031 is coaxial with the driven shaft 4022, and there are 8 adjusting holes 4032 circumferentially distributed with the center of the adjusting disk 4031 as the center on the adjusting disk 4031.

[0049] As Figure 10 、 Figure 11 And Figure 12As shown in the figure, the locking mechanism 404 includes a positioning pin head 4041, a positioning pin seat 4042 matching the positioning pin head 4041, and a chain 4043. The positioning pin head 4041 passes through the positioning pin seat 4042 and the adjustment hole 4032 in sequence and is fixed on the adjustment disk 4031. The positioning pin seat 4042 is fixed to the positioning hole 4033 at the top of the left connecting seat 4021 of the workbench 1 through a screw. The chain 4043 is used to connect the positioning pin head 4041 and the positioning pin seat 4042 to prevent the positioning pin head 4041 from being lost during use. When it is necessary to adjust the welding angle or replace the support parts of the rail vehicle, pull out the positioning pin head 4041 from the adjustment disk 4031, rotate the turntable 4012 to make the manual speed reducer 4011 drive the driven shaft 4022 on the left, and then the adjustment disk 4031 and the workbench 1 rotate driven by the driven shaft 4022. After the workbench 1 rotates to the target position, insert the positioning pin head 4041 into the positioning pin seat 4042 and the adjustment hole 4032 in sequence, and fix the positioning pin head 4041 to keep the position of the workbench 1. Embodiment 2

[0050] As Figure 1 , Figure 2 , Figure 13 and Figure 14 As shown in the figures, a welding fixture for assembling the support parts of the cab of a rail vehicle includes a workbench 1, a first clamping mechanism 2, a second clamping mechanism 3, and a flipping mechanism 4. The first clamping mechanism 2 and the second clamping mechanism 3 are respectively arranged on different planes of the workbench 1. In this embodiment, the support parts of the rail vehicle are the column 5 and the longitudinal beam 6 of the rail vehicle. The first clamping mechanism 2 is used to clamp the column 5 of the rail vehicle, and the second clamping mechanism 3 is used to clamp the longitudinal beam 6 of the rail vehicle. Specifically:

[0051] The first clamping mechanism 2 includes a plurality of first clamping parts 201 distributed along the contour of the column 5 of the rail vehicle on the workbench 1 and a first supporting part 202 corresponding to the first clamping parts 201.

[0052] As Figure 3 shown in the figure, the first clamping part 201 provides longitudinal pressure to clamp the column 5 of the rail vehicle. The first clamping part 201 includes a base 2011, a connecting arm 2012, and a pressing rod 2013. The base 2011 of the first clamping part 201 is fixedly installed on the top of the workbench 1. One end of the connecting arm 2012 is fixedly connected to the base 2011, and the other end is threadedly connected to the pressing rod 2013. By rotating the pressing rod 2013, the pressing rod 2013 rises or falls perpendicular to the workbench on the connecting arm 2012.

[0053] As Figure 4As shown in the figure, the first support portion 202 includes a plurality of first bases 2021 and a plurality of support plate groups 2022 adapted to the first bases 2021; the first bases 2021 and the support plate groups 2022 of the first support portion 202 are both fixedly installed on the top of the workbench 1. The first bases 2021 of the first support portion 202 can quickly position the upright column 5 of the rail vehicle placed on the support plate. Move the upright column 5 on the support plate group 2022 so that the edge of the upright column 5 abuts against the first base 2021, and the quick positioning of the upright column 5 can be achieved. Rotate the pressing rod 2013 of the first clamping portion 201 downward to clamp and fix the upright column 5.

[0054] As Figure 5 shown in the figure, the first support portion 202 further includes a plurality of tightening mechanisms 2023 for limiting the upright column 5 of the rail vehicle. The tightening mechanisms 2023 of the first support portion 202 are distributed along the contour of the upright column 5 on the top of the workbench 1. The tightening mechanism 2023 includes a second base 20231 and a tightening rod 20232. The second base 20231 is fixedly installed on the top of the workbench 1. The tightening rod 20232 is threadedly connected to the second base 20231. Rotate the tightening rod 20232, and the tightening rod 20232 moves longitudinally on the second base 20231. After the upright column 5 is positioned, rotate the tightening rod 20232 to limit the upright column 5 longitudinally.

[0055] As Figure 6 shown in the figure, the second clamping mechanism 3 includes a support seat 301, a plurality of second clamping portions 302 and a second support portion 303; the support seat 301 is fixedly installed at the bottom of the workbench 1. A plurality of second clamping portions 302 are distributed along the contour of the longitudinal beam 6 of the rail vehicle on the support seat 301. The second support portion 303 corresponds to the second clamping portion 302.

[0056] The second clamping portion 302 provides longitudinal pressure to clamp the longitudinal beam 6. The structure of the second clamping portion 302 is the same as that of the first clamping portion 201. The structure of the second support portion 303 is the same as that of the first support portion 202, and the second support portion 303 also includes a plurality of tightening mechanisms 2023, so it will not be elaborated. It should be noted that:

[0057] The base 2011 of the second clamping portion 302 is fixedly installed on the front surface of the support base 301. The first base 2021 and the support plate group 2022 of the second support portion 303 are both fixedly installed on the front surface of the support base 301. The positioning method of the second support portion 303 for the longitudinal beam 6 is the same as that of the first support portion 202 for the column 5. The tightening mechanisms 2023 of the second support portion 303 are distributed along the contour of the longitudinal beam 6 at the bottom of the support base 301. The second base 20231 of the tightening mechanism 2023 of the second support portion 303 is fixedly installed on the front surface of the support base 301. The tightening mechanism 2023 of the second support portion 303 is used to limit the longitudinal beam 6, and the method of the tightening mechanism 2023 of the second support portion 303 for limiting the longitudinal beam 6 is the same as that of the tightening mechanism 2023 of the first support portion 202 for limiting the column 5.

[0058] To improve the adaptability to support members of rail vehicles with different thicknesses, the support plate group 2022 includes a plurality of stacked plates, which are connected by fasteners. The number of stacked plates can be increased or decreased by removing the fasteners between the plates, so as to meet the clamping requirements of support members of rail vehicles with different thicknesses.

[0059] As Figure 7 、 Figure 8 and Figure 9 shown, the flipping mechanism 4 is arranged on the side of the surface of the workbench 1 and is used to rotate the workbench 1 to adjust the clamping angle between the first clamping mechanism 2 and the second clamping mechanism 3. Specifically:

[0060] The flipping mechanism 4 includes a driving portion 401, a driven portion 402, an adjusting portion 403 and a locking mechanism 404. The driven portion 402 includes connecting seats 4021 symmetrically arranged on both sides of the workbench 1 and a driven shaft 4022 arranged on the connecting seats 4021. The driving portion 401 includes a manual reducer 4011 and a turntable 4012 installed at the power input end of the manual reducer 4011. In this embodiment, the driven shaft 4022 is installed on the connecting seat 4021 through a bearing, and the driven shaft 4022 is fixedly connected to the workbench 1. The adjusting portion 403 includes an adjusting disk 4031 fixedly connected to the driven shaft 4022 on the left side of the workbench 1 and a positioning hole 4033 opened at the top of the connecting seat 4021 on the left side of the workbench 1. The adjusting disk 4031 is coaxial with the driven shaft 4022, and there are 8 adjusting holes 4032 distributed circumferentially with the center of the adjusting disk 4031 as the center.

[0061] As Figure 10 、 Figure 11 and Figure 12As shown in the figure, the locking mechanism 404 includes a positioning pin head 4041, a positioning pin seat 4042 matching the positioning pin head 4041, and a chain 4043. The positioning pin head 4041 passes through the positioning pin seat 4042 and the adjustment hole 4032 in sequence and is fixed on the adjustment disk 4031. The positioning pin seat 4042 is fixed to the positioning hole 4033 at the top of the left connecting seat 4021 of the workbench 1 through a screw. The chain 4043 is used to connect the positioning pin head 4041 and the positioning pin seat 4042 to prevent the loss of the positioning pin head 4041 during use. When it is necessary to adjust the welding angle or replace the support parts of the rail vehicle, only need to pull out the positioning pin head 4041 from the adjustment disk 4031, rotate the turntable 4012 to make the manual reducer 4011 drive the left driven shaft 4022, and then the adjustment disk 4031 and the workbench 1 rotate driven by the driven shaft 4022. After the workbench 1 rotates to the target position, insert the positioning pin head 4041 into the positioning pin seat 4042 and the adjustment hole 4032 in sequence, and fix the positioning pin head 4041 to keep the position of the workbench 1.

[0062] Working principle

[0063] Pull out the positioning pin head 4041 from the adjustment hole 4032 on the adjustment disk 4031, rotate the turntable 4012 to turn the side of the workbench 1 with the first clamping mechanism 2 to the horizontal position, align the positioning pin head 4041 with the adjustment hole 4032 corresponding to the positioning pin seat 4042 on the adjustment disk 4031, install the positioning pin head 4041 on the adjustment disk 4031, turn up the pressing rod 2013 of the first clamping part 201, turn outwards the jacking rod 20232 of the first supporting part 202, place the column 5 of the rail vehicle on the support plate group 2022 of the first supporting part 202 according to the position of the first base 2021 of the first supporting part 202. After adjusting the position, press the column 5 of the rail vehicle against the first base 2021, turn down the pressing rod 2013 to clamp the column 5 of the rail vehicle, and turn inwards the jacking rod 20232 to tighten the column 5 to complete the clamping of the column 5. Remove the positioning pin head 4041, turn the side of the workbench 1 with the support seat 301 to the horizontal position, install the positioning pin head 4041 and clamp the longitudinal beam 6 of the rail vehicle to the second clamping mechanism 3 with reference to the clamping process of the column 5. Observe whether the position of the workbench 1 needs to be finely adjusted. If adjustment is needed, remove the positioning pin head 4041, rotate the turntable 4012 to adjust the workbench 1 to an appropriate angle and install the positioning pin head 4041, then welding operation can be carried out.

[0064] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and deformations can still be made, and these improvements and deformations should also be regarded as the protection scope of the present invention.

Claims

1. A welding tool for supporting parts of a rail vehicle cab, characterized in that: The invention comprises a workbench (1), a first clamping mechanism (2) and a second clamping mechanism (3) respectively arranged on different planes of the workbench (1) for clamping a rail vehicle column (5) and for clamping a rail vehicle longitudinal beam (6), and a turning mechanism (4) arranged on a side of the workbench (1) for adjusting the clamping angles of the first clamping mechanism (2) and the second clamping mechanism (3); The first clamping mechanism (2) comprises a plurality of first clamping portions (201) arranged on the workbench (1) and distributed along the contour of the rail vehicle column (5), and a first supporting portion (202) arranged on the workbench (1) and corresponding to the first clamping portions (201); The first clamping portion (201) is used to provide vertical pressure to clamp the rail vehicle column (5); The second clamping mechanism (3) comprises a support seat (301) provided on the workbench (1), a plurality of second clamping portions (302) provided on the support seat (301) and distributed along the contour of the rail vehicle longitudinal beam (6), and a second supporting portion (303) corresponding to the second clamping portion (302); The second clamping portion (302) is used to provide vertical pressure to clamp the longitudinal beam (6).

2. The welding tool for supporting parts of a rail vehicle cab according to claim 1, characterized in that: The turning mechanism (4) comprises a driving part (401), a driven part (402) arranged on the side of the workbench (1), an adjusting part (403) arranged on the driven part (402), and a locking mechanism (404); the driving part (401) drives the driven part (402) to drive the workbench (1) to deflect, and the driven part (402) is locked by the locking mechanism (404) and the adjusting mechanism.

3. The welding tool for supporting parts of a rail vehicle cab according to claim 2, characterized in that: The driving part (401) comprises a manual reducer (4011) and a rotating disk (4012) provided at a power input end of the manual reducer (4011); the power output end of the manual reducer (4011) is connected to the driven part (402).

4. The welding tool for supporting parts of a rail vehicle cab according to claim 2, characterized in that: The driven part (402) comprises a connecting seat (4021) symmetrically arranged on both sides of the workbench (1) and a driven shaft (4022) arranged on the connecting seat (4021), and the driven shaft (4022) is connected to the workbench (1).

5. The welding tool for supporting parts of a rail vehicle cab according to claim 4, characterized in that: The adjusting portion (403) comprises an adjusting disk (4031) provided on the driven shaft (4022) and a positioning hole (4033) provided on the connecting seat (4021); a plurality of adjusting holes (4032) are provided on the adjusting disk (4031); and the locking mechanism (404) is respectively connected to the adjusting holes (4032) and the positioning holes (4033).

6. The welding tool for supporting parts of a rail vehicle cab according to claim 5, characterized in that: The locking mechanism (404) comprises a positioning pin head (4041), a positioning pin seat (4042) matching the positioning pin head (4041), and a chain (4043); the positioning pin head (4041) passes through the adjustment hole (4032) and is fixedly connected to the adjustment disk (4031) via the chain (4043); the positioning pin seat (4042) is fixedly connected to the positioning hole (4033) via a fastener.

7. The welding tool for supporting parts of a rail vehicle cab according to claim 1, characterized in that: The first clamping portion (201) comprises a base (2011), a connecting arm (2012) arranged on the base (2011), and a clamping rod (2013) movably arranged on the connecting arm (2012); the base (2011) is fixedly connected to the workbench (1), and the clamping rod (2013) is rotated, and the clamping rod (2013) moves on the connecting arm (2012) perpendicular to the workbench (1).

8. The welding tool for supporting parts of a rail vehicle cab according to claim 1, characterized in that: The first support portion (202) comprises a plurality of first bases (2021) and a plurality of support plate groups (2022) adapted to the first bases (2021); the first bases (2021) are fixedly connected to the workbench (1); the support plate group (2022) comprises a plurality of stacked plate bodies, and the plate bodies are connected via fasteners.

9. The welding tool for supporting parts of a rail vehicle cab according to claim 1, characterized in that: The first support portion (202) further comprises a plurality of clamping mechanisms (2023) for limiting and clamping rail vehicle columns (5) or longitudinal beams (6).

10. The welding tool for supporting parts of a rail vehicle cab according to claim 9, characterized in that: The tightening mechanism (2023) comprises a second base (20231) and a tightening rod (20232) movably arranged on the second base (20231); the tightening rod (20232) is rotated so that the tightening rod (20232) moves longitudinally on the second base (20231).

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