Production, assembly and welding tool system for straddle type monorail vehicle framework bottom plate pre-assembly

Abstract

The utility model discloses a straddle type monorail vehicle framework bottom plate pre-assembly production, assembly and welding tool system which is axially symmetric in the transverse direction and the longitudinal direction. Comprising a frame, and an inner side bottom plate contour supporting body, an outer side bottom plate contour supporting body, a guide wheel mounting seat supporting plate, various pressing mechanisms, a pushing device and a positioning block which are arranged on the frame, the two ends of the frame are connected with the motor and can rotate by 180 degrees. The inner side bottom plate contour supporting body and the outer side bottom plate contour supporting body are located on the upper portion of the interior of the frame and the upper portion of the exterior of the frame correspondingly and used for supporting the framework bottom plate. The guide wheel mounting seat supporting plates are positioned at four corners of the frame; a plurality of pressing mechanisms and pushing devices are used for clamping in a hydraulic mode. According to the utility model, the problems of groove dislocation and non-uniform gaps during manual installation of the bottom plate pre-assembly are solved; the problems of large welding deformation quantity and welding size deformation of the bottom plate pre-assembly are solved; the problem of the bottom plate pre-assembly back welding seam welding turnover position is solved; the problem of low manual assembly efficiency of the bottom plate pre-assembly is solved; the problem that an original pressing device needs to be manually tightened is solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the tool equipment technical field for rail transit relates to a kind of straddle type monorail car framework bottom plate preassembly production group welding tool system, mainly for the assembly and group welding of straddle type monorail car framework bottom plate preassembly. BACKGROUND

[0002] With social economy and city development, public traffic as the important component of city traffic, will become the project of priority development of each big city, as city passenger traffic tool monorail car has safety, comfort, low noise, low cost and other advantages, receive the attention of each big city.

[0003] In the group welding process of each component of straddle type monorail car, tool is needed to guarantee the production process of welded part, the purpose is to facilitate assembly, control welding size and deformation.

[0004] Straddle type monorail car framework bottom plate preassembly is the important position of straddle type monorail car steering system guide wheel installation, and its tool positioning quality is related to final framework welding size, machining size quality, and then influence the final assembly quality of straddle type monorail car.

[0005] Moreover, the group welding tool of straddle type monorail car framework bottom plate preassembly needs to consider improving product size positioning, clamping and turnover efficiency and other processes in tool design. SUMMARY

[0006] The utility model wants to solve technical problems are: (1) solve the problem of bevel misplacement and uneven gap when bottom plate preassembly is installed manually;(2) solve the problem of large welding deformation and welding size deformation of bottom plate preassembly;(3) solve the problem of welding and turnover position of back weld of bottom plate preassembly;(4) solve the problem of low efficiency of manual assembly of bottom plate preassembly, reduce labor intensity;(5) solve the shortcoming of manual tightening of original pressing device, change oil pump hydraulic clamping device, improve production efficiency.

[0007] The utility model aims at providing a kind of straddle type monorail car framework bottom plate preassembly production group welding tool system, guarantees the size point of framework bottom plate preassembly, controls welding deformation to guarantee the quality of final product.

[0008] The utility model solves the technical scheme that the technical problem thereof adopts:

[0009] A pre-assembly and welding fixture system for the frame base plate of a straddle-type monorail vehicle is provided. The fixture system is axially symmetrical both laterally and longitudinally, and includes a frame and inner and outer base plate contour supports, guide wheel mounting base supports, various clamping mechanisms, pushing devices, and positioning blocks mounted on the frame. The frame is connected to motors at both ends and can rotate 180°. The inner and outer base plate contour supports are located at the upper inner and outer sides of the frame, respectively, to support the frame base plate. The guide wheel mounting base supports are located at the four corners of the frame. The various clamping mechanisms and pushing devices are hydraulically clamped.

[0010] Furthermore, the clamping mechanism includes a first corner clamping device, a second corner clamping device, and a clamping device; the first corner clamping device is located on the inner bottom plate contour support and the outer bottom plate contour support, and is used to clamp the bottom plate; the second corner clamping device and the clamping device are located on the guide wheel mounting seat support plate, and are used to clamp the guide wheel mounting seat.

[0011] Furthermore, the first and second corner clamping devices are clamped hydraulically.

[0012] Furthermore, the outer bottom plate contour support is higher than the inner bottom plate contour support, and the two are parallel to each other, matching the inner and outer contours of the frame bottom plate.

[0013] Furthermore, positioning holes are provided at corresponding positions on the frame and on the outer bottom plate contour support, and the positioning holes match the positioning pins on the frame bottom plate.

[0014] Furthermore, the positioning hole and the hole positioning pin are located on the longitudinal axis of symmetry of the tooling system.

[0015] Furthermore, the guide wheel mounting base support plate is higher than the inner bottom plate contour support body.

[0016] Furthermore, the positioning block is disposed on the guide wheel mounting base support plate and is used to position and limit the guide wheel mounting base.

[0017] Furthermore, the pushing device is located on the guide wheel mounting base support plate and cooperates with the positioning block to limit the guide wheel mounting base.

[0018] Furthermore, the frame is provided with a rotating shaft connecting seat at both ends and on the transverse axis of symmetry, and the rotating shaft connecting seat is connected to the motor; the motor is a three-phase asynchronous motor.

[0019] The advantages of this utility model are as follows:

[0020] (1) By using this utility model, the pre-assembly of the frame base plate can be accurately positioned during assembly, avoiding problems such as difficulty in post-weld adjustment and unqualified post-weld products caused by inaccurate positioning.

[0021] (2) This utility model solves the problem of large welding deformation and low welding accuracy when welding pre-components of the frame base plate;

[0022] (3) This utility model solves the problems of welding difficulty and welding accuracy of the back weld of the pre-component of the frame base plate.

[0023] (4) This utility model solves the problem of low assembly efficiency of pre-assembly of frame base plate and reduces the labor intensity of workers.

[0024] (5) By utilizing this utility model, the disadvantage of the corner clamping device and the push clamping device requiring manual positioning and clamping is solved, and the hydraulic system is replaced by an oil pump, thereby improving work efficiency. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the pre-assembly and welding fixture system for the straddle-type monorail vehicle frame base plate of this utility model.

[0026] Figure 2 A schematic diagram of the pre-assembly and welding fixture system for the straddle-type monorail vehicle frame base plate after the base plate has been placed.

[0027] Figure 3 A schematic diagram of the welding fixture system for the pre-assembly production of the frame base plate of a straddle-type monorail vehicle, showing the base plate to be placed.

[0028] Figure 4 A schematic diagram of the mounting hole positioning pins for the pre-assembly welding fixture system for the frame base plate of a straddle-type monorail vehicle.

[0029] Figure 5 A schematic diagram of the guide wheel mounting base to be installed in the pre-assembly and welding fixture system for the frame base plate of a straddle-type monorail vehicle.

[0030] Figure 6 A schematic diagram of the installation of guide wheel mounting seats and subsequent pressing and tightening of the pre-assembly production and welding fixture system for the straddle-type monorail vehicle frame base plate. Figure 1 (enlarged view of a part)

[0031] Among them, 1-hole positioning pin, 2-first corner clamping device, 3-clamping device, 4-pushing device, 5-positioning block, 6-tooling frame, 7-base plate, 8-guide wheel mounting seat, 9-second corner clamping device, 10-guide wheel mounting seat support plate, 11-outer bottom plate contour support body, 12-inner bottom plate contour support body. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] like Figure 1 As shown, the horizontal and vertical axes of the pre-assembly production and welding fixture system for the straddle-type monorail vehicle frame base plate in this embodiment are both axisymmetric. It includes a fixture frame 6, a hole positioning pin 1 provided on the fixture base frame, inner and outer bottom plate contour supports, a guide wheel mounting seat support plate 10, three clamping mechanisms, a pushing device 4, and a positioning block 5.

[0034] Among them, the tooling frame 6 is the basic frame of the entire tooling system. At both ends of the tooling frame 6 and on the horizontal axis of symmetry, there are rotating shaft connecting seats. The rotating shaft connecting seats are connected to the motor. When the motor is started, it drives the entire tooling frame 6 to rotate 180° through the rotating shaft connecting seats.

[0035] The locating pin 1 is located on the tooling frame 6 and on the longitudinal axis of symmetry of the tooling system. The base plate 7 is accurately positioned on the tooling frame 6 by means of the locating pin 1.

[0036] The outer bottom plate contour support 11 and the inner bottom plate contour support 12 are located above the outside and inside of the tooling frame 6, respectively, and are arranged parallel to each other. Furthermore, the outer bottom plate contour support 11 is higher than the inner bottom plate contour support 12, which matches the inner and outer contours of the bottom plate 7 (e.g., ...). Figure 1 (As shown). In addition, the outer bottom plate contour support 11 is also provided with positioning holes that match the positioning pins 1 on the tooling frame 6.

[0037] Among them, the guide wheel mounting base support plate 10 is located at the four corners of the tooling frame 6, and the guide wheel mounting base support plate 10 is higher than the inner bottom plate contour support body 12 (e.g., Figure 1 (As shown).

[0038] The positioning block 5 is located on the guide wheel mounting base support plate 10 and is used to position and limit the guide wheel mounting base 8.

[0039] Among them, the three clamping mechanisms include a first corner clamping device 2, a second corner clamping device 9, and a clamping device 3.

[0040] The first corner clamping device 2 is located on the inner bottom plate contour support 12 and the outer bottom plate contour support 12, and is used to clamp the bottom plate 7.

[0041] The second corner clamping device 9 is located on the guide wheel mounting base support plate 10 and is used to clamp the guide wheel mounting base 8.

[0042] The clamping device 3 is located on the guide wheel mounting base support plate 10 and is used to clamp the guide wheel mounting base 8.

[0043] The push-tightening device 4 is located on the guide wheel mounting base support plate 10, and is arranged opposite to and cooperates with the positioning block 5 to limit the guide wheel mounting base 8.

[0044] This embodiment of the tooling system reduces the need for manual labor while ensuring product quality. The first corner clamping device 2, the second corner clamping device 9, and the pushing device 4 all employ hydraulic pumps to control clamping, significantly reducing manual product positioning and clamping operations and improving work efficiency. Furthermore, a three-phase asynchronous motor is added, which drives the tooling system to rotate 180° via a rotating shaft, enabling flip welding and further enhancing welding production efficiency.

[0045] The process of assembling and welding the straddle-type monorail vehicle frame base plate pre-assembly using the production and welding tooling system of this embodiment is as follows:

[0046] (1) Assembly of base plate 7

[0047] Start the hydraulic oil pump and control the switch to rotate all hydraulic clamping mechanisms outwards towards the outside of the pre-assembly production and welding fixture system for the straddle-type monorail vehicle frame base plate in this embodiment, ensuring that the base plate 7 falls into the fixture system without interference (e.g., Figure 3 As shown), after the base plate 7 falls into the tooling system, it is adjusted to match the corresponding hole position of the base plate 7 through the positioning holes on the tooling frame 6, and then fixed by the insertion of the positioning pin 1 (as shown). Figure 4 (As shown). Check that the gap between the material tooling platform of the straddle-type monorail frame base plate is ≤0.2mm (this refers to the gap between the inner base plate outline support 12, the outer base plate outline support 11 and the base plate 7).

[0048] (2) Assembly of guide wheel mounting seat 8

[0049] Place the guide wheel mounting base 8 into the four end positions (four corners, see assembly relationship) of the tooling system according to the assembly relationship. Figure 5 The guide wheel mounting seat 8 is located on the outer end of the base plate 7, and is assembled with the base plate 7. Assembly is performed according to the process requirements, ensuring that the guide wheel mounting seat 8 is symmetrical in both the longitudinal and transverse directions relative to the base plate 7. The outermost part of the guide wheel mounting seat 8 with a centerline ≤0.5mm is flush with the base plate 7. After verifying the assembly relationship, all clamping mechanisms are tightened. These include the first corner clamping device 2, the second corner clamping device 9, and the pushing device 4 (see...). Figure 6 The hydraulic pump starts automatically and clamps.

[0050] (3) Front welding

[0051] If the assembly dimensions are correct in step (2), weld the front weld between the guide wheel mounting seat 8 and the base plate 7 according to the requirements of the welding process document.

[0052] (4) Back welding

[0053] After the front weld is completed, the motor is started to rotate the welding plane 180° through the shaft, and the back weld between the guide wheel mounting seat 8 and the base plate 7 is welded according to the requirements of the welding process document.

[0054] The above description is merely a preferred embodiment of the present utility model and does not constitute a limitation on the scope of protection of the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the scope of protection of the claims of the present utility model.

Claims

1. A straddle-type monorail car frame bottom plate pre-assembly production assembly and welding tooling system, characterized in that, The tooling system is axisymmetric in both lateral and longitudinal directions, comprising a frame, an inner bottom plate contour support body and an outer bottom plate contour support body arranged on the frame, a guide wheel mounting seat support plate, a plurality of pressing mechanisms, a pushing device and a positioning block; the two ends of the frame are connected with a motor and can rotate by 180 degrees; the inner bottom plate contour support body and the outer bottom plate contour support body are respectively located above the inside and outside of the frame and are used for supporting the frame bottom plate; the guide wheel mounting seat support plate is located at the four corners of the frame; the plurality of pressing mechanisms and the pushing device are clamped in a hydraulic manner.

2. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to claim 1, characterized in that, The pressing mechanism comprises a first corner pressing device, a second corner pressing device and a presser; the first corner pressing device is located on the inner bottom plate contour support body and the outer bottom plate contour support body and is used for pressing the bottom plate; the second corner pressing device and the presser are located on the guide wheel mounting seat support plate and are used for pressing the guide wheel mounting seat.

3. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to claim 2, characterized in that, The first corner pressing device and the second corner pressing device are clamped in a hydraulic manner.

4. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to any one of claims 1-3, characterized in that, The outer bottom plate contour support body is higher than the inner bottom plate contour support body and is parallel to the inner and outer contours of the frame bottom plate.

5. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to any one of claims 1-3, characterized in that, Corresponding positions on the frame and the outer bottom plate contour support body are provided with positioning holes, and the positioning holes are matched with hole positioning pins on the frame bottom plate.

6. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to claim 5, characterized in that, The positioning holes and the hole positioning pins are located on the longitudinal symmetry axis of the tooling system.

7. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to any one of claims 1-3, characterized in that, The guide wheel mounting seat support plate is higher than the inner bottom plate contour support body.

8. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to any one of claims 1-3, characterized in that, The positioning block is arranged on the guide wheel mounting seat support plate and is used for positioning and limiting the guide wheel mounting seat.

9. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to claim 8, characterized in that, The pushing device is arranged on the guide wheel mounting seat support plate and cooperates with the positioning block to limit the guide wheel mounting seat.

10. The straddle-type monorail car frame bottom plate pre-assembly production assembly welding tool system according to any one of claims 1-3, characterized in that, The two ends of the frame and located on the lateral symmetry axis are provided with a rotating shaft connecting seat, and the rotating shaft connecting seat is connected with the motor; the motor is a three-phase asynchronous motor.

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