A rail transit vehicle bracket welding auxiliary positioning device

Abstract

The present invention discloses a welding auxiliary positioning device for a rail transit vehicle bracket, which relates to the technical field of welding auxiliary positioning, and includes a clamping arm group, a vehicle bracket, an adjustment rail and a positioning component. The clamping arm group is symmetrically arranged into two, and the clamping arm group consists of a mechanical arm and a clamp located at the end of the mechanical arm. The vehicle bracket is clamped and moved by the clamp. A plurality of adjustment rails are provided between the two clamping arm groups, and the positioning component is slidably provided on the adjustment rail for supporting and adjusting the vehicle bracket, so as to facilitate subsequent welding of the vehicle bracket. Moreover, the angle of the vehicle bracket can be adjusted by rotating the movable arm, so as to assist in positioning the weld to facilitate welding. At the same time, with the help of the clamping component, the weld spacing is kept stable by clamping from different positions.

Description

Technical Field

[0001] The present application relates to the technical field of welding auxiliary positioning, and in particular to a welding auxiliary positioning device for a rail transit vehicle bracket. Background Art

[0002] During the welding process of rail transit vehicle brackets, auxiliary positioning devices are required for fixed adjustment to ensure the size of the weld and the flatness of the butt joint, thereby reducing welding deviations and improving welding quality and production efficiency. However, existing auxiliary positioning devices are difficult to adapt to the clamping of different shapes, widths, thicknesses, and side seams; it is difficult to ensure accurate shaping after direct fixation through spot welding, resulting in the inability to adjust subsequent welding, affecting the overall welding quality.

[0003] Therefore, it is necessary to provide a rail transit vehicle bracket welding auxiliary positioning device to solve the problems raised in the above background technology. Summary of the Invention

[0004] To achieve the above-mentioned objectives, the present application provides the following technical solutions: a rail transit vehicle bracket welding auxiliary positioning device, comprising a clamping arm group, a vehicle bracket, an adjustment track and a positioning assembly, wherein the clamping arm group is symmetrically arranged in two, the clamping arm group is composed of a mechanical arm and a clamping head located at the end of the mechanical arm, the vehicle bracket is clamped and moved by the clamping head, a plurality of adjustment tracks are provided between the two clamping arm groups, and the positioning assembly is slidably provided on the adjustment track for supporting and adjusting the vehicle bracket, thereby facilitating subsequent welding of the vehicle bracket;

[0005] The positioning assembly includes an adjustment base, a rotating table, a support arm, a movable arm, a clamping assembly and a limit motor. The adjustment base is slidably arranged on the adjustment rail, and the lower end of the rotating table is rotatably arranged in the adjustment base. One end of the support arm is fixed on the rotating table, and the other end is rotatably provided with a movable arm. The movable arm is connected to the clamping assembly through a rotating shaft, and the limit motor is fixedly arranged on the movable arm, and the output shaft of the limit motor is connected to the rotating shaft.

[0006] Preferably, a control motor is provided in the adjustment base, an output end of the control motor is connected to the rotating table, and the rotating table is adjusted to rotate by the control motor.

[0007] Preferably, a plurality of fixed bases for support are provided below the adjustment track, a guide groove for accommodating the adjustment base is provided on the adjustment track, an adjustment screw is built into the adjustment track, and the adjustment screw is controlled by an external motor.

[0008] Preferably, the adjustment base includes a counterweight box and a guide bar, the lower end surface of the counterweight box is placed in contact with the surface of the adjustment track, and the guide bar is slidably arranged in the guide groove.

[0009] Preferably, a screw hole is provided on the guide bar for cooperating with the adjusting screw.

[0010] Preferably, a rotating motor is provided at the connection between the support arm and the movable arm, and the rotating motor is used to control the movable arm to rotate.

[0011] Preferably, the movable arm includes a transfer seat rotatably arranged on the support arm, and parallel wing plates fixed on the transfer seat, and the parallel wing plates are symmetrically arranged in two.

[0012] Preferably, the clamping assembly includes a counterweight rod, the upper end of which is slidably sleeved with the abutment column, and a groove is provided outside the abutment column, and the groove is used to accommodate the wedge strip.

[0013] Preferably, a reset motor is provided in the abutment column to control the abutment column to be telescopically adjusted relative to the counterweight rod.

[0014] Preferably, a polished rod is fixedly provided at an upper middle position of the counterweight rod, the polished rod is rotatably provided on the parallel wing plates, and the end of the counterweight rod is connected to the limit motor.

[0015] Compared with the prior art, the present application provides a rail transit vehicle bracket welding auxiliary positioning device, which has the following beneficial effects:

[0016] In the present application, the vehicle bracket is first clamped and moved to a suitable position by the clamping arm group before welding. Then, according to the structure of the vehicle bracket and the requirements of the welding part, multiple adjustment tracks are set at different intervals, and a positioning component is set on each adjustment track. By rotating the rotating table and the rotating motor, the clamping component can be driven to adjust the position arbitrarily within the circular area, ensuring that vehicle brackets of different shapes and sizes can be fixedly clamped by the clamping component in the most suitable position. At the same time, multiple different clamping components clamp the vehicle bracket at the same time to improve stability. The clamping component is adjusted to a vertical state by itself and maintained stable by a limit motor.

[0017] Moreover, the angle of the vehicle bracket can be adjusted by rotating the movable arm, which assists in positioning the weld to facilitate welding. At the same time, the clamping assembly is used to clamp the bracket from different positions to keep the weld spacing stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Other features, objects and advantages of the present application will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of a rail transit vehicle bracket welding auxiliary positioning device;

[0020] Figure 2 A schematic diagram of an adjustment track for a welding auxiliary positioning device for a rail transit vehicle bracket;

[0021] Figure 3 This is a schematic diagram of the positioning component structure of a rail transit vehicle bracket welding auxiliary positioning device;

[0022] Figure 4 This is a schematic diagram of the structure of an adjustment base of a rail transit vehicle bracket welding auxiliary positioning device;

[0023] Figure 5 This is a schematic diagram of the movable arm structure of a rail transit vehicle bracket welding auxiliary positioning device;

[0024] Figure 6 This is a schematic diagram of the structure of a clamping assembly of a rail transit vehicle bracket welding auxiliary positioning device;

[0025] In the figure: 1. Clamping arm group; 11. Robotic arm; 12. Clamp; 2. Vehicle bracket; 3. Adjustment track; 31. Fixed base; 32. Guide groove; 33. Adjustment screw; 4. Positioning assembly; 41. Adjustment base; 411. Counterweight box; 412. Guide bar; 413. Screw hole; 42. Turntable; 43. Support arm; 431. Rotating motor; 44. Movable arm; 441. Adapter; 442. Parallel wing plate; 45. Clamping assembly; 451. Counterweight rod; 452. Abutment column; 453. Groove; 454. Wedge bar; 46. Limit motor. DETAILED DESCRIPTION

[0026] See also Figures 1-6 In an embodiment of the present application, a rail transit vehicle bracket welding auxiliary positioning device includes a clamping arm group 1, a vehicle bracket 2, an adjustment rail 3 and a positioning assembly 4. The clamping arm group 1 is symmetrically arranged in two, and the clamping arm group 1 is composed of a mechanical arm 11 and a clamping head 12 located at the end of the mechanical arm 11. The vehicle bracket 2 is clamped and moved by the clamping head 12. A plurality of adjustment rails 3 are provided between the two clamping arm groups 1, and the positioning assembly 4 is slidably provided on the adjustment rail 3 for supporting and adjusting the vehicle bracket 2, so as to facilitate subsequent welding of the vehicle bracket 2.

[0027] The positioning assembly 4 includes an adjusting base 41, a rotating platform 42, a supporting arm 43, a movable arm 44, a clamping assembly 45 and a limiting motor 46. The adjusting base 41 is slidably set on the adjusting rail 3, and the lower end of the rotating platform 42 is rotatably set in the adjusting base 41. One end of the supporting arm 43 is fixed on the rotating platform 42, and the other end is rotatably set with a movable arm 44. The movable arm 44 is connected to the clamping assembly 45 through a rotating shaft, and the limiting motor 46 is fixedly set on the movable arm 44, and the output shaft of the limiting motor 46 is connected to the rotating shaft.

[0028] It should be explained that the vehicle bracket 2 is first clamped and moved to a suitable position by the clamping arm group 1 during welding. Then, according to the structure of the vehicle bracket 2 and the requirements of the welding part, a plurality of adjustment rails 3 are set at different intervals, and a positioning component 4 is set on each adjustment rail 3. Specifically, the rotating table 42 and the rotating motor 431 are rotated to drive the clamping component 45 to adjust the position arbitrarily within the circular area, ensuring that vehicle brackets 2 of different shapes and sizes can be fixedly clamped by the clamping component 45 in the most suitable position. At the same time, multiple different clamping components 45 clamp the vehicle bracket 2 at the same time to improve stability. The clamping component 45 is adjusted to a vertical state by itself and is kept stable by the limit motor 46.

[0029] Moreover, the angle of the vehicle bracket 2 can be adjusted by rotating the movable arm 44 to assist in positioning the weld for easier welding. At the same time, the clamping assembly 45 can be used to clamp the bracket 2 from different positions to keep the weld spacing stable.

[0030] As a preferred embodiment, a control motor is provided in the adjustment base 41 , and an output end of the control motor is connected to the rotating platform 42 , so that the rotating platform 42 is adjusted to rotate by the control motor.

[0031] As a preferred embodiment, a plurality of fixed bases 31 for support are provided under the adjustment rail 3, a guide groove 32 for placing the adjustment base 41 is opened on the adjustment rail 3, and an adjustment screw 33 is built into the adjustment rail 3, and the adjustment screw 33 is controlled by an external motor.

[0032] It should be explained that by adjusting the screw 33 to drive the positioning assembly 4 to slide as a whole, the adjustment base 41 can be controlled to reach a suitable position, ensuring that the range of movement of the clamping assembly 45 overlaps with the selected fixed position on the vehicle bracket 2.

[0033] As a preferred embodiment, the adjustment base 41 includes a counterweight box 411 and a guide bar 412 . The lower end surface of the counterweight box 411 is placed in contact with the surface of the adjustment track 3 , and the guide bar 412 is slidably arranged in the guide groove 32 .

[0034] As a preferred embodiment, a screw hole 413 is provided on the guide bar 412 for cooperating with the adjusting screw 33 .

[0035] As a preferred embodiment, a rotating motor 431 is provided at the connection between the support arm 43 and the movable arm 44 , and the rotating motor 431 is used to control the movable arm 44 to rotate.

[0036] It should be explained that when the movable arm 44 rotates relative to the support arm 43 , the corresponding clamping assembly 45 moves within a circumferential range around the axis of the rotating platform 42 , thereby controlling the clamping assembly 45 to reach a suitable position to clamp the vehicle bracket 2 .

[0037] As a preferred embodiment, the movable arm 44 includes a transfer seat 441 rotatably disposed on the support arm 43 , and parallel wing plates 442 fixed on the transfer seat 441 , and the parallel wing plates 442 are symmetrically arranged in two.

[0038] As a preferred embodiment, the clamping assembly 45 includes a counterweight rod 451 , the upper end of which is slidably sleeved with the abutment column 452 , and a groove 453 is provided on the outside of the abutment column 452 , and the groove 453 is used to accommodate the wedge strip 454 .

[0039] It should be explained that the clamping is performed by means of a wedge-shaped strip 454 , and the wedge-shaped strip 454 can be replaced according to the actual situation of the vehicle bracket 2 .

[0040] As a preferred embodiment, a reset motor is provided in the abutting column 452 to control the abutting column 452 to be telescopically adjusted relative to the counterweight rod 451 .

[0041] As a preferred embodiment, a light rod is fixedly provided at the upper middle position of the counterweight rod 451 , the light rod is rotatably provided on the parallel wing plate 442 , and the end of the counterweight rod 451 is connected to the limit motor 46 .

[0042] It needs to be explained that the clamping assembly 45 automatically restores its vertical state through the weight of the lower part of the counterweight rod 451, and then the limiting motor 46 applies resistance to the rotating shaft to prevent the clamping assembly 45 from shaking. In the subsequent load-bearing state, the limiting motor 46 is not the main force transmission point, which effectively ensures the stability of the clamping.

[0043] During specific implementation, the vehicle bracket 2 is first clamped and moved to a suitable position by the clamping arm group 1 during welding. Then, multiple adjustment rails 3 are set at different intervals according to the structure of the vehicle bracket 2 and the requirements of the welding part, and a positioning component 4 is set on each adjustment rail 3. Specifically, by rotating the rotating table 42 and the rotating motor 431, the clamping component 45 can be driven to adjust the position arbitrarily within the circular area to ensure that vehicle brackets 2 of different shapes and sizes can be fixedly clamped by the clamping component 45 in the most suitable position. At the same time, multiple different clamping components 45 clamp the vehicle bracket 2 at the same time to improve stability. The clamping component 45 adjusts to a vertical state by itself and maintains stability through the limiting motor 46.

[0044] The above is only a preferred specific implementation method of the present application, but the scope of protection of the present application is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and application concept of the present application within the technical scope disclosed in the present application, and they should be covered by the scope of protection of the present application.

Claims

1. A rail transit vehicle bracket welding auxiliary positioning device, characterized in that: The invention comprises a clamping arm group (1), a vehicle support (2), an adjustment track (3) and a positioning assembly (4), wherein the clamping arm group (1) is symmetrically arranged into two, the clamping arm group (1) is composed of a mechanical arm (11) and a clamping head (12) located at the end of the mechanical arm (11), the vehicle support (2) is clamped and moved by the clamping head (12), a plurality of adjustment tracks (3) are provided between the two clamping arm groups (1), and the positioning assembly (4) is slidably provided on the adjustment track (3) for supporting and adjusting the vehicle support (2), so as to facilitate subsequent welding of the vehicle support (2); The positioning assembly (4) comprises an adjusting base (41), a rotating platform (42), a supporting arm (43), a movable arm (44), a clamping assembly (45) and a limiting motor (46); the adjusting base (41) is slidably arranged on the adjusting rail (3); the lower end of the rotating platform (42) is rotatably arranged in the adjusting base (41); one end of the supporting arm (43) is fixed on the rotating platform (42); and the other end is rotatably provided with a movable arm (44); the movable arm (44) is connected to the clamping assembly (45) via a rotating shaft; and the limiting motor (46) is fixedly arranged on the movable arm (44); and the output shaft of the limiting motor (46) is connected to the rotating shaft; The movable arm (44) includes a transfer seat (441) rotatably arranged on the support arm (43), and parallel wing plates (442) fixed on the transfer seat (441), and two parallel wing plates (442) are symmetrically arranged; The clamping assembly (45) includes a counterweight rod (451), the upper end of which is slidably sleeved with an abutment column (452), and a groove (453) is provided outside the abutment column (452), and the groove (453) is used to accommodate a wedge strip (454); A reset motor is provided in the abutting column (452) to control the abutting column (452) to perform telescopic adjustment relative to the counterweight rod (451); A polished rod is fixedly arranged at an upper position in the middle of the counterweight rod (451), the polished rod is rotatably arranged on the parallel wing plate (442), and the end of the counterweight rod (451) is connected to the limit motor (46); A plurality of fixed bases (31) for supporting are provided below the adjustment track (3), a guide groove (32) for accommodating the adjustment base (41) is provided on the adjustment track (3), and an adjustment screw (33) is built into the adjustment track (3); The adjustment base (41) includes a counterweight box (411) and a guide bar (412). The lower end surface of the counterweight box (411) is placed in contact with the surface of the adjustment track (3), and the guide bar (412) is slidably arranged in the guide groove (32). The guide bar (412) is provided with a screw hole (413) for cooperating with the adjusting screw rod (33).

2. The rail transit vehicle bracket welding auxiliary positioning device according to claim 1, characterized in that: A control motor is provided in the adjustment base (41), and an output end of the control motor is connected to the rotating platform (42). The rotating platform (42) is rotated by adjusting the control motor.

3. The rail transit vehicle bracket welding auxiliary positioning device according to claim 1, characterized in that: The adjusting screw (33) is controlled by an external motor.

4. The rail transit vehicle bracket welding auxiliary positioning device according to claim 1, characterized in that: A rotating motor (431) is provided at the connection between the support arm (43) and the movable arm (44), and the rotating motor (431) is used to control the movable arm (44) to rotate.

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