Integrated modular welding tooling for railcar powertrain mounts

Abstract

An integrated modular welding tool for a rail vehicle power system mounting seat is provided. Each step surface on the multi-layered stepped main frame is provided with a positioning device having the same number as the mounting seats and used for adjusting the position of the mounting seats. The positional relationship between the multiple positioning devices is the same as the welding position relationship between the multiple mounting seats on the frame longitudinal beam. The multiple mounting seats change their connection positions on the multi-layered stepped main frame through the positioning device, so that the fixed ends of the multiple mounting seats integrated at the bottom of the multi-layered stepped main frame can smoothly avoid the frame longitudinal beam and be positioned and welded after being adjusted on the multi-layered stepped main frame. The present invention ensures the height difference size of each mounting seat, improves the welding position accuracy of each mounting seat, and the hole spacing size accuracy on the mounting surface of the mounting seat for installing the power system. The multi-layered stepped main frame has high rigidity, which is conducive to the deformation control of the mounting seat during the welding process, reduces the welding difficulty of the power system mounting seat, and improves the welding efficiency of the mounting seat.

Description

Technical Field

[0001] The present invention belongs to the technical field of track construction machinery, and particularly relates to an integrated modular welding tooling for a mounting seat of a power system of a rail vehicle. Background Art

[0002] With the continuous improvement of the scale, operating speed, operating mileage, and operating frequency of urban subway transportation in China, rail vehicles have become the first choice for people to travel. The rail vehicles in related technologies include a vehicle frame and a power system installed on the vehicle frame. The power system needs to be supported on the vehicle frame by a plurality of power system mounting seats welded to the vehicle frame. For models such as GCD-1000 / DAS-12, a total of 6 mounting seats for supporting the power system in the vehicle frame are in a group. To ensure the reliability of the power system, the hole pitch dimension accuracy on the mounting surface for installing the power system on the mounting seat is required to be ±0.5 mm, and there are height differences of different heights on the mounting surfaces of the mounting seats at different installation positions on the vehicle frame longitudinal beam. However, if the 6 mounting seats are welded separately, it is difficult to measure the height difference dimension of the mounting surface and it is difficult to ensure. Moreover, due to the influence of welding deformation, it is difficult to ensure the hole pitch dimension on the mounting surface for installing the power system on the mounting seat. In the patent application with the application number 201910611479.5 and the name "Rail Vehicle Power System Mounting Seat Assembly" (hereinafter referred to as the comparative document), a structure for precise welding of the mounting seat is disclosed. The tooling includes a main frame in a rectangular shape, through holes penetrating through the positions of the four corners of the main frame, and positioning pins protruding and extending around the through holes. The four mounting seats are bolted to the tooling, and then the four mounting seats are welded to the corresponding positions on the vehicle frame and the tooling is removed. However, this tooling is only applicable to the welding and fixing of multiple mounting seats with the same height on the vehicle frame longitudinal beam, and it cannot meet the welding requirements when facing multiple mounting seats with height differences. Moreover, if the problem of the height difference of the mounting seats is not considered, since the opening dimension between the vehicle frame longitudinal beams is smaller than the opening dimension required for the mounting seat, when the tooling with the power system mounting seat as a whole falls downward, there will be an interference phenomenon between the mounting seat and the vehicle frame longitudinal beam, resulting in the mounting seat being unable to smoothly fall to the welding position of the vehicle frame longitudinal beam. Therefore, in summary, it is necessary to make improvements. Summary of the Invention

[0003] Technical problems to be solved by the present invention: Provide an integrated modular welding tooling for the mounting seat of the power system of a rail vehicle. The step mounting surfaces on the multi-layer stepped main frame and the position adjusting device are used to ensure the height difference dimensions of each mounting seat. Taking the multi-layer stepped main frame as a reference, the mounting seats are integrally welded on the vehicle frame, improving the welding position accuracy of each mounting seat and the hole pitch dimension accuracy on the mounting surface for mounting the power system on the mounting seat. The multi-layer stepped main frame has high rigidity, which is beneficial to controlling the deformation of the mounting seat during the welding process, reducing the welding difficulty of the power system mounting seat, and improving the welding efficiency of the mounting seat.

[0004] Technical solution adopted by the present invention: An integrated modular welding tooling for the mounting seat of the power system of a rail vehicle, including a multi-layer stepped main frame. The height sequence of each layer of steps on the multi-layer stepped main frame is the same as and the height difference is also the same as that of a plurality of mounting seats to be welded to the vehicle frame longitudinal beam and used to support the power system; on each layer of step surface of the multi-layer stepped main frame, there are position adjusting devices with the same number as the mounting seats and used for adjusting the position of the mounting seats. The positional relationship between the plurality of position adjusting devices is the same as the welding positional relationship of the plurality of mounting seats on the vehicle frame longitudinal beam. The plurality of mounting seats located below the multi-layer stepped main frame change their connection positions on the multi-layer stepped main frame through the position adjusting devices, so that the fixed ends of the plurality of mounting seats integrated at the bottom of the multi-layer stepped main frame can smoothly avoid the vehicle frame longitudinal beam, and perform positioning welding after adjustment on the multi-layer stepped main frame.

[0005] Among them, the number of steps of the multi-layer stepped main frame is determined according to the number of mounting seats with different heights.

[0006] Furthermore, the position adjusting device includes a mounting plate and a position adjusting bolt. The mounting plate is fixed at the outer edge near the upper step surface of the multi-layer stepped main frame. The mounting plate is provided with a mounting hole and a process avoidance hole penetrating the multi-layer stepped main frame, and the process avoidance hole is located inside the mounting hole. By changing the matching position of the position adjusting bolt connecting the power system connection end of the mounting seat with the process avoidance hole or the mounting hole, when the position adjusting bolt connecting the power system connection end of the mounting seat is matched with the process avoidance hole, the fixed ends of the plurality of mounting seats integrated on the multi-layer stepped main frame can smoothly avoid the vehicle frame longitudinal beam, or when the position adjusting bolt connecting the power system connection end of the mounting seat is matched with the mounting hole, perform positioning welding on the fixed ends of the plurality of mounting seats integrated on the multi-layer stepped main frame.

[0007] Furthermore, the multi-layer stepped main frame includes a multi-layer stepped main board and a plurality of reinforcing ribs provided on the upper end surface and the bottom surface of the multi-layer stepped main board.

[0008] Further, the multi-layer stepped main board is composed of a first-layer stepped board, a second-layer stepped board, a third-layer stepped board, a first vertical board and a second vertical board. The board surfaces of the first-layer stepped board and the second-layer stepped board are in a T-shaped structure. Two positioning devices are symmetrically arranged on the widest board surfaces of the first-layer stepped board and the second-layer stepped board. Two positioning devices are symmetrically arranged at the edge of the board surface of the third-layer stepped board. The narrow end of the first-layer stepped board and the wide end of the second-layer stepped board are fixedly connected into a stepped structure through the first vertical board. The narrow end of the second-layer stepped board and the third-layer stepped board are fixedly connected into a stepped structure through the second vertical board. The height differences between the lower end surfaces of the first-layer stepped board, the second-layer stepped board and the third-layer stepped board are the same as the height differences of the mounting seats of three heights. A reinforcing rib is transversely fixed on the bottom surface of the first-layer stepped board below the positioning device. A plurality of reinforcing ribs fixedly connected to the first vertical board are fixed on the bottom surface of the first-layer stepped board along its length direction. A plurality of reinforcing ribs fixedly connected to the first vertical board are fixed on the upper end surface of the second-layer stepped board. A plurality of reinforcing ribs fixedly connected to the second vertical board are fixed on the bottom surface of the second-layer stepped board. A plurality of reinforcing ribs fixedly connected to the second vertical board are fixed on the upper end surface of the third-layer stepped board.

[0009] Further, a weight-reducing waist-shaped hole is formed in the middle of the board surface in the length direction of the first-layer stepped board and in the middle of the board surface in the width direction of the second-layer stepped board.

[0010] Further, a lifting lug on the same plane as the positioning device is arranged on the upper step surface of the multi-layer stepped main frame.

[0011] Advantages of the present invention compared with the prior art:

[0012] 1. In this technical solution, a multi-layer stepped main frame is made, in which the height sequence of each layer of steps is the same as the height sequence of a plurality of mounting seats to be welded to the vehicle frame longitudinal beam and the height differences are also the same. And positioning devices with the same number as the mounting seats and used for adjusting the positions of the mounting seats are arranged on the step surfaces of each layer of the multi-layer stepped main frame, so that the fixed ends of the plurality of mounting seats integrated at the bottom of the multi-layer stepped main frame can successfully avoid the vehicle frame longitudinal beam, and positioning welding is carried out after adjustment on the multi-layer stepped main frame, greatly simplifying the welding difficulty of the mounting seats;

[0013] 2. This technical solution uses the step mounting surfaces and positioning devices on the multi-layer stepped main frame to ensure the height difference dimensions of each mounting seat, and the mounting seats are integrally welded on the vehicle frame with the multi-layer stepped main frame as the reference, improving the welding position accuracy of each mounting seat and the hole pitch dimension accuracy of the mounting surface for mounting the power system on the mounting seat;

[0014] 3. In this technical solution, mounting plates, adjusting bolts, mounting holes, and process avoidance holes are provided on the multi-layer stepped main frame. While enhancing the strength of the supporting part of the mounting seat, it achieves the adjustment of the position of the mounting seat located on the multi-layer stepped main frame, enabling each mounting seat integrated on the multi-layer stepped main frame to smoothly avoid the vehicle frame longitudinal beam and be adjusted to the welding positioning position, thus solving the drawback of interference between the mounting seat integrated on the multi-layer stepped main frame and the vehicle frame longitudinal beam.

[0015] 4. This technical solution adopts a multi-layer stepped main frame formed by a multi-layer stepped main board composed of a first-layer stepped plate, a second-layer stepped plate, a third-layer stepped plate, a first vertical plate, and a second vertical plate and reinforcing ribs. The multi-layer stepped main frame has greater rigidity, which is beneficial to controlling the deformation of the mounting seat during the welding process, reducing the welding difficulty of the power system mounting seat, and improving the welding efficiency of the mounting seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the front view of the structure of the present invention;

[0017] Figure 2 is the top view of the structure of the present invention;

[0018] Figure 3 is the left view of the structure of the present invention;

[0019] Figure 4 is the front view of the present invention in the using state;

[0020] Figure 5 is the top view of the present invention in the using state. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following describes an embodiment of the present invention in conjunction with the attached Figures 1-5 drawings to clearly and completely describe the technical solution. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 therefore, should not be construed as a limitation to the present invention.

[0023] An integrated modular welding tooling for the mounting seat of the rail vehicle power system, such as Figures 1-3As shown, it includes a multi-layer stepped main frame 1. The height order of each layer of steps on the multi-layer stepped main frame 1 is the same as that of a plurality of mounting seats to be welded to the vehicle frame longitudinal beam and used to support the power system, and the height differences are also the same. On each layer of step surface of the multi-layer stepped main frame 1, there are position adjustment devices with the same number as the mounting seats and used for adjusting the positions of the mounting seats. The positional relationship between the multiple position adjustment devices is the same as the welding positional relationship of the multiple mounting seats on the vehicle frame longitudinal beam. The multiple mounting seats located below the multi-layer stepped main frame 1 change their connection positions on the multi-layer stepped main frame 1 through the position adjustment devices, so that the fixed ends of the multiple mounting seats integrated at the bottom of the multi-layer stepped main frame 1 can smoothly avoid the vehicle frame longitudinal beam and be positioned and welded after adjustment on the multi-layer stepped main frame 1. In the above structure, by making a multi-layer stepped main frame 1 with the height order of each layer of steps being the same as that of the multiple mounting seats to be welded to the vehicle frame longitudinal beam and the height differences also being the same, and setting position adjustment devices with the same number as the mounting seats and used for adjusting the positions of the mounting seats on each layer of step surface of the multi-layer stepped main frame 1, the fixed ends of the multiple mounting seats integrated at the bottom of the multi-layer stepped main frame 1 can smoothly avoid the vehicle frame longitudinal beam and be positioned and welded after adjustment on the multi-layer stepped main frame 1, greatly simplifying the welding difficulty of the mounting seats. Using the step mounting surfaces and position adjustment devices on the multi-layer stepped main frame 1 to ensure the height difference dimensions of each mounting seat, and welding the whole on the vehicle frame with the multi-layer stepped main frame 1 as the reference, improving the welding position accuracy of each mounting seat and the hole pitch dimension accuracy on the mounting surface of the mounting seat for mounting the power system.

[0024] The number of steps of the multi-layer stepped main frame 1 is determined according to the number of mounting seats with different heights.

[0025] The specific structure of the position adjustment device is as follows: The position adjustment device includes a mounting plate 2 and a position adjustment bolt. The mounting plate 2 is fixed to the upper step surface of the multi-layer stepped main frame 1 near the outer edge. The mounting plate 2 is provided with a mounting hole 3 and a process avoidance hole 4 that penetrate the multi-layer stepped main frame 1, and the process avoidance hole 4 is located inside the mounting hole 3. By changing the matching position of the position adjustment bolt at the power system connection end of the connecting mounting seat with the process avoidance hole 4 or the mounting hole 3, when the position adjustment bolt at the power system connection end of the connecting mounting seat is matched with the process avoidance hole 4, the fixed ends of multiple mounting seats integrated on the multi-layer stepped main frame 1 can successfully avoid the vehicle frame longitudinal beam, or when the position adjustment bolt at the power system connection end of the connecting mounting seat is matched with the mounting hole 3, the positioning welding of the fixed ends of multiple mounting seats integrated on the multi-layer stepped main frame 1 is achieved. In the above structure, by providing the mounting plate 2, the position adjustment bolt, the mounting hole 3 and the process avoidance hole 4 on the multi-layer stepped main frame 1, while improving the strength of the support part of the mounting seat, the adjustment of the position of the mounting seat located on the multi-layer stepped main frame 1 is achieved, so that each mounting seat integrated on the multi-layer stepped main frame 1 can successfully avoid the vehicle frame longitudinal beam and be adjusted to the welding positioning position, solving the drawback of interference between the mounting seat integrated on the multi-layer stepped main frame 1 and the vehicle frame longitudinal beam;

[0026] The specific structure of the multi-layer stepped main frame 1 is as follows: The multi-layer stepped main frame 1 includes multi-layer stepped main boards and a plurality of reinforcing ribs 1-6 provided on the upper and lower end surfaces of the multi-layer stepped main boards.

[0027] Among them, taking the welding of three kinds of heights of six mounting seats on the longitudinal beam of the vehicle frame as an example, the specific structure of the multi-layer stepped main board is as follows: The multi-layer stepped main board is composed of a first-layer stepped board 1-1, a second-layer stepped board 1-2, a third-layer stepped board 1-3, a first vertical board 1-4 and a second vertical board 1-5. The plate surfaces of the first-layer stepped board 1-1 and the second-layer stepped board 1-2 are in a T-shaped structure. Two positioning devices are symmetrically arranged on the widest plate surfaces of the first-layer stepped board 1-1 and the second-layer stepped board 1-2. Two positioning devices are symmetrically arranged at the edge of the plate surface of the third-layer stepped board 1-3. The narrow end of the first-layer stepped board 1-1 and the wide end of the second-layer stepped board 1-2 are fixedly connected by the first vertical board 1-4 to form a stepped structure. The narrow end of the second-layer stepped board 1-2 and the third-layer stepped board 1-3 are fixedly connected by the second vertical board 1-5 to form a stepped structure. The height differences of the lower end surfaces of the first-layer stepped board 1-1, the second-layer stepped board 1-2 and the third-layer stepped board 1-3 are the same as the height differences of the mounting seats of the three kinds of heights. A reinforcing rib 1-6 located below the positioning device is transversely fixed on the bottom surface of the first-layer stepped board 1-1. A plurality of reinforcing ribs 1-6 fixedly connected to the first vertical board 1-4 are fixed along the length direction of the bottom surface of the first-layer stepped board 1-1. A plurality of reinforcing ribs 1-6 fixedly connected to the first vertical board 1-4 are fixed on the upper end surface of the second-layer stepped board 1-2. A plurality of reinforcing ribs 1-6 fixedly connected to the second vertical board 1-5 are fixed on the bottom surface of the second-layer stepped board 1-2. A plurality of reinforcing ribs 1-6 fixedly connected to the second vertical board 1-5 are fixed on the upper end surface of the third-layer stepped board 1-3. In the above structure, a multi-layer stepped main frame 1 formed by the multi-layer stepped main board composed of the first-layer stepped board 1-1, the second-layer stepped board 1-2, the third-layer stepped board 1-3, the first vertical board 1-4 and the second vertical board 1-5 and the reinforcing rib 1-6 has greater rigidity, which is beneficial to the deformation control of the mounting seat during the welding process, reduces the welding difficulty of the mounting seat of the power system, and improves the welding efficiency of the mounting seat. Specifically, in order to reduce the weight of this tooling, a weight-reducing waist-shaped hole 1-7 is processed in the middle of the plate surface in the length direction of the first-layer stepped board 1-1 and the middle of the plate surface in the width direction of the second-layer stepped board 1-2.

[0028] After positioning and installing the six mounting seats on the multi-layer stepped main frame 1, in order to facilitate the lifting of the multi-layer stepped main frame 1, a lifting lug 5 is arranged on the upper step surface of the multi-layer stepped main frame 1 and is in the same plane as the positioning device.

[0029] Such as Figures 4-5As shown in the figure, the specific usage method is as follows: Set the lower plane of the vehicle frame upward and place the vehicle frame on the welding platform. First, install the power system mounting seat on the corresponding stepped surface at the bottom of the multi-layer stepped main frame 1 according to the height relationship, by fixing it with the positioning bolts adapted to the process avoidance holes 4. Then, use the overhead crane to lift the multi-layer stepped main frame 1 above the vehicle frame and slowly lower it. The welding ends of multiple mounting seats pass through the openings between the vehicle frame longitudinal beams. After the multi-layer stepped main frame 1 drops to the corresponding position of the vehicle frame longitudinal beams, take out the positioning bolts of the mounting seats in the process avoidance holes 4, and move the power system mounting seats outward. Fix the mounting seats on the multi-layer stepped main frame 1 again by the cooperation of the positioning bolts and the mounting holes 3. Adjust the front-back position and left-right position of the tooling according to the vehicle frame center line and the marked position line of the power system mounting seats. After the position is adjusted, spot-weld the mounting seats to the vehicle frame longitudinal beams. After all the welds of the power system mounting seats are welded, wait for the welds to cool, remove the positioning bolts, and take out the tooling.

[0030] The above embodiments are only the preferred embodiments of the present invention and are not used to limit the scope of implementation of the present invention. Therefore, all equivalent changes made according to the content described in the claims of the present invention should be included within the scope of the claims of the present invention.

Claims

1. An integrated modular welding tool for a rail vehicle power system mounting seat, characterized in that: The invention comprises a multi-layered stepped main frame (1), wherein the height sequence of each layer of steps on the multi-layered stepped main frame (1) is the same as the height sequence of a plurality of mounting seats to be welded to the frame longitudinal beam and used to support the power system, and the height difference is also the same; each layer of the step surface on the multi-layered stepped main frame (1) is provided with a positioning device having the same number as the mounting seats and used to adjust the position of the mounting seats, and the positional relationship between the plurality of positioning devices is the same as the welding position relationship of the plurality of mounting seats on the frame longitudinal beam; the plurality of mounting seats located below the multi-layered stepped main frame (1) change their connection positions on the multi-layered stepped main frame (1) through the positioning device, so that the fixed ends of the plurality of mounting seats integrated at the bottom of the multi-layered stepped main frame (1) smoothly avoid the frame longitudinal beam, and are positioned and welded after being adjusted on the multi-layered stepped main frame (1).

2. The integrated modular welding tool for a rail vehicle power system mounting seat according to claim 1, characterized in that: The number of steps of the multi-layer stepped main frame (1) is determined according to the number of mounting seats of different heights.

3. The integrated modular welding tool for a rail vehicle power system mounting seat according to claim 1, characterized in that: The positioning device comprises a mounting plate (2) and a positioning bolt. The mounting plate (2) is fixed to the upper step surface of the multi-layer stepped main frame (1) near the outer edge. The mounting plate (2) is provided with a mounting hole (3) and a process avoidance hole (4) penetrating the multi-layer stepped main frame (1). The process avoidance hole (4) is located on the inner side of the mounting hole (3). The matching position of the positioning bolt at the power system connection end connected to the mounting seat and the process avoidance hole (4) or the mounting hole (3) is changed, so that when the positioning bolt at the power system connection end connected to the mounting seat is matched with the process avoidance hole (4), the fixed ends of the multiple mounting seats integrated on the multi-layer stepped main frame (1) can smoothly avoid the frame longitudinal beam, or when the positioning bolt at the power system connection end connected to the mounting seat is matched with the mounting hole (3), the positioning welding of the fixed ends of the multiple mounting seats integrated on the multi-layer stepped main frame (1) can be achieved.

4. The integrated modular welding tool for a rail vehicle power system mounting seat according to claim 1, characterized in that: The multi-layer stepped main frame (1) comprises a multi-layer stepped main board and a plurality of reinforcing ribs (1-6) arranged on the upper end surface and the bottom surface of the multi-layer stepped main board.

5. The integrated modular welding tool for a rail vehicle power system mounting seat according to claim 4, characterized in that: The multi-layer stepped main board comprises a first layer of stepped boards (1-1), a second layer of stepped boards (1-2), a third layer of stepped boards (1-3), a first vertical board (1-4) and a second vertical board (1-5); the board surfaces of the first layer of stepped boards (1-1) and the second layer of stepped boards (1-2) are in a T-shaped structure; two positioning devices are symmetrically arranged on the widest board surfaces of the first layer of stepped boards (1-1) and the second layer of stepped boards (1-2); two positioning devices are symmetrically arranged at the edge of the board surface of the third layer of stepped boards (1-3); the narrow end of the first layer of stepped boards (1-1) and the wide end of the second layer of stepped boards (1-2) are fixedly connected to form a stepped structure via the first vertical board (1-4); the narrow end of the second layer of stepped boards (1-2) and the third layer of stepped boards (1-3) are fixedly connected to form a stepped structure via the second vertical board (1-5); The height difference between the lower end surfaces of the first step plate (1-1), the second step plate (1-2) and the third step plate (1-3) is the same as the height difference of the mounting seats of the three heights; a reinforcing rib (1-6) located below the positioning device is transversely fixed to the bottom surface of the first step plate (1-1); a plurality of reinforcing ribs (1-6) fixedly connected to the first vertical plate (1-4) are fixedly connected to the bottom surface of the first step plate (1-1) along its length direction; a plurality of reinforcing ribs (1-6) fixedly connected to the first vertical plate (1-4) are fixedly connected to the upper end surface of the second step plate (1-2); a plurality of reinforcing ribs (1-6) fixedly connected to the second vertical plate (1-5) are fixedly connected to the bottom surface of the second step plate (1-2); and a plurality of reinforcing ribs (1-6) fixedly connected to the second vertical plate (1-5) are fixedly connected to the upper end surface of the third step plate (1-3).

6. The integrated modular welding tool for a rail vehicle power system mounting seat according to claim 5, characterized in that: The middle of the plate surface in the length direction of the first layer of stepped plates (1-1) and the middle of the plate surface in the width direction of the second layer of stepped plates (1-2) are both provided with weight-reducing waist-shaped holes (1-7).

7. The integrated modular welding tool for a rail vehicle power system mounting seat according to any one of claims 1 to 6, characterized in that: The upper step surface of the multi-layered stepped main frame (1) is provided with a lifting lug (5) located in the same plane as the positioning device.

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