Connection device for integral lifting of bogie axle box of subway engineering vehicle

Abstract

Provided is a connection device for lifting the axle box of a metro engineering vehicle as a whole. The spring upper seat and the spring lower seat are located between the bogie frame and the wheelset axle box, and the spring upper seat is fixedly connected to the bogie frame. The process pin connected to the bogie frame passes through the center holes on the spring upper seat and the spring lower seat and extends to the outside of the spring lower seat. The lower end of the spring lower seat is adapted to the mounting hole on the wheelset axle box and the vibration-damping pad is sleeved on the spring lower seat. The lower end of the process pin is detachably fixedly connected to the locking member to realize the rigid connection between the bogie frame and the wheelset axle box when lifting. The present invention eliminates the lifting idle travel of the bogie frame and the wheelset axle box during the overall lifting, avoids the misalignment of the buffer spring during lifting, reduces the risk of a series of vertical oil pressure shock absorbers exceeding the maximum lifting travel, ensures the safety and reliability of the bogie frame and the wheelset axle box when lifting as a whole, has high utilization rate of the jacking equipment, reasonable design, economical and applicable, and improves the safety and reliability of operation.

Description

Technical Field

[0001] The invention belongs to a bogie of a subway engineering vehicle, and in particular relates to a connecting device for integrally lifting an axle box of a bogie of a subway engineering vehicle. Background Art

[0002] At present, the installation of the buffer spring between the bogie frame and the wheelset axle box of the subway engineering vehicle adopts the process pin and the flat pin to pre-compress the buffer spring. After the vehicle is assembled, the flat pin and the bottom of the wheelset axle box retain a gap that adapts to the change of the primary suspension dynamic load. When the bogie frame is lifted as a whole with the vehicle, the hydraulic jacking equipment lifts the frame, the frame drives the bogie frame to lift, and the bogie frame drives the process pin and the flat pin to lift. When the reserved gap between the flat pin and the bottom of the wheelset axle box is consumed, the flat pin and the bottom of the wheelset axle box limit each other to achieve a rigid connection between the bogie frame and the wheelset axle box, thereby achieving non-binding lifting between the bogie frame and the wheelset axle box; but with the increasingly higher requirements for rescue lifting of subway engineering vehicles at this stage, both the safety of lifting and the timeliness of lifting are required, that is, some overall lifting methods often consume the gap between the flat pin and the bottom of the wheelset axle box, and the hydraulic jacking equipment has insufficient stroke and low lifting efficiency. It is necessary to make improvements to the above problems. Summary of the invention

[0003] The technical problem solved by the present invention is as follows: a connecting device is provided for lifting the axle box of the bogie of a subway engineering vehicle as a whole. By detachably connecting the lower end of the process pin with the locking piece, a rigid connection between the bogie frame and the wheelset axle box when lifting is achieved, thereby solving the problem of poor applicability of hydraulic jacking equipment, eliminating the empty lifting stroke of the bogie frame and the wheelset axle box during overall lifting, avoiding the misalignment of the buffer spring during lifting, reducing the risk of a series of vertical oil pressure shock absorbers exceeding the maximum pulling stroke, and ensuring the safety and reliability of the bogie frame and the wheelset axle box when lifting as a whole. The jacking equipment has high utilization rate, reasonable design, simple structure, economy and applicability, and improves the safety and reliability of operation.

[0004] The technical solution adopted by the present invention is as follows: a connecting device for lifting the axle box of a metro engineering vehicle as a whole, comprising a spring upper seat, a buffer spring, a spring lower seat, a vibration-damping pad, a process pin and a flat pin, wherein the spring upper seat and the spring lower seat are located between the bogie frame and the wheelset axle box, and the spring upper seat is fixedly connected to the bogie frame, the buffer spring is arranged between the spring upper seat and the spring lower seat, and the process pin connected to the bogie frame passes through the center holes on the spring upper seat and the spring lower seat and extends to the outside of the spring lower seat, the lower end of the spring lower seat is adapted to be in the mounting hole on the wheelset axle box and the vibration-damping pad sleeve located on the upper end surface of the wheelset axle box is arranged on the spring lower seat, and the lower end of the process pin is detachably fixedly connected to the locking piece to realize the rigid connection between the bogie frame and the wheelset axle box when lifting.

[0005] Among them, the locking part is a lifting nut, the lower end of the process pin is formed with an external thread, and the lifting washer under the wheelset axle box is sleeved on the process pin, and the rigid connection between the bogie frame and the wheelset axle box is achieved by adapting the lifting nut and the external thread at the lower end of the process pin and tightening them.

[0006] Furthermore, a long hole is formed at the lower end of the process pin and the long hole is axially parallel to the process pin, a pin hole is formed at the lower end of the process pin and is perpendicular to the long hole, the flat pin is installed on the process pin through the long hole, and the flat pin is locked after the cotter pin passes through the pin hole and the hole on the flat pin, and the bogie frame removes the cotter pin and the flat pin in turn before lifting the whole vehicle, and then puts the lifting washer on the process pin and lifts it by tightening the lifting nut to fit the external thread on the lower end of the process pin.

[0007] The advantages of the present invention compared with the prior art are:

[0008] 1. This technical solution realizes the rigid connection between the bogie frame and the wheelset axle box when lifting by detachably connecting the lower end of the process pin with the locking piece, thereby eliminating the idle lifting travel of the bogie frame and the wheelset axle box during overall lifting, avoiding the misalignment of the buffer spring during lifting, and reducing the risk of the first-line vertical hydraulic shock absorber exceeding the maximum lifting travel;

[0009] 2. Before the bogie frame of this technical solution is lifted with the whole vehicle, the cotter pin and the flat pin are removed in turn, and the lifting washer is put on the process pin and tightened by fitting the lifting nut with the external thread at the lower end of the process pin before lifting. The disassembly and installation before and after lifting are convenient and quick. The process pin meets the pre-compression installation requirements of the buffer spring when assembling the bogie frame and the wheelset axial direction and the gap-free installation requirements between the bogie frame and the wheelset axle box during lifting;

[0010] 3. This technical solution ensures the safety and reliability of the bogie frame and wheelset axle box when lifting as a whole. The jacking equipment has high utilization rate, reasonable design, simple structure, improved safety and reliability of operation, easy operation, economical and convenient installation and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the present invention;

[0012] Figure 2 This is a schematic diagram of the connection structure before lifting of the present invention;

[0013] Figure 3 It is a schematic structural diagram of the process pin of the present invention. DETAILED DESCRIPTION

[0014] The following is combined with Figure 1-3An embodiment of the present invention is described to clearly and completely describe the technical solution. Obviously, the described embodiment is only a part of the embodiments of the present invention, rather than all the embodiments.

[0015] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 understood as a limitation on the present invention.

[0016] The connecting device for lifting the axle box of the metro engineering vehicle as a whole comprises a spring upper seat 1, a buffer spring 2, a spring lower seat 7, a vibration-damping pad 6, a process pin 3 and a flat pin 5, wherein the spring upper seat 1 and the spring lower seat 7 are located between the bogie frame 9 and the wheelset axle box 8, and the spring upper seat 1 is fixedly connected to the bogie frame 9, the buffer spring 2 is arranged between the spring upper seat 1 and the spring lower seat 7, and the process pin 3 connected to the bogie frame 9 passes through the center holes on the spring upper seat 1 and the spring lower seat 7 and extends to the outside of the spring lower seat 7, the lower end of the spring lower seat 7 is adapted to the mounting hole on the wheelset axle box 8 and the vibration-damping pad 6 located on the upper end surface of the wheelset axle box 8 is sleeved on the spring lower seat 7, and the lower end of the process pin 3 is detachably fixedly connected to the locking member to realize the rigid connection between the bogie frame 9 and the wheelset axle box 8 when lifting; specifically, the locking member is a lifting member. A lifting nut 12, an external thread 10 is formed at the lower end of the process pin 3, and a lifting washer 11 under the wheelset axle box 8 is sleeved on the process pin 3, and the rigid connection between the bogie frame 9 and the wheelset axle box 8 is realized by fitting the lifting nut 12 with the external thread 10 at the lower end of the process pin 3 and tightening it; specifically, a long hole 13 is formed at the lower end of the process pin 3, and the long hole 13 is axially parallel to the process pin 3, and a pin hole 14 is formed at the lower end of the process pin 3 that is perpendicular to the long hole 13, the flat pin 5 is installed on the process pin 3 through the long hole 13, and the cotter pin 4 is locked after passing through the pin hole 14 and the hole on the flat pin 5, and the bogie frame 9 removes the cotter pin 4 and the flat pin 5 in turn before lifting the whole vehicle, and then the lifting washer 11 is sleeved on the process pin 3 and lifted after fitting the lifting nut 12 with the external thread 10 at the lower end of the process pin 3 and tightening it.

[0017] The present technical scheme is mainly used for pre-compression of the buffer spring 3 when assembling the bogie frame 9 and the wheelset axle box 8 before lifting, wherein the lower end of the process pin 3 has an external thread 10, and a long hole 13 for installing the flat pin 5 and a pin hole 14 for installing the cotter pin 4 are reserved at the lower end of the process pin 3. When lifting the whole, the cotter pin 4 and the flat pin 5 are taken out in turn, and then the lifting washer 11 is installed on the lower end of the process pin 3, and the lifting nut 12 is adapted to the external thread 10 at the lower end of the process pin 3 and tightened to achieve gap-free installation between the lifting nut 12, the lifting washer 11 and the wheelset axial direction 8; the present mechanism can effectively eliminate the gap through the cooperation of the process pin 3 with the lifting washer 11 and the lifting nut 12 with the external thread 10 Except for the idle travel between the bogie frame 9 and the wheelset axle box 8 during lifting, the bogie frame 9 and the wheelset axle box 8 can be lifted without idle travel, and the buffer spring 3 of the wheelset axle box 8 can be prevented from being misplaced or exceeding the maximum lifting travel of the first-series vertical oil pressure shock absorber during lifting. The general hydraulic jacking equipment can be used to safely and quickly realize the overall lifting of the bogie frame and the wheelset axle box 8, and then realize the overall lifting of the whole vehicle and the bogie, which improves the safety and reliability of operation, ensures the lifting safety and applicability of the hydraulic jacking equipment, and the jacking equipment has high utilization rate, reasonable design, simple structure, improved safety and reliability of operation, easy operation, economical and applicable, and convenient installation and maintenance.

[0018] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, all equivalent changes made to the contents described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A connection device for lifting the axle box of a metro engineering vehicle as a whole, comprising a spring upper seat (1), a buffer spring (2), a spring lower seat (7), a vibration-damping pad (6), a process pin (3) and a flat pin (5), wherein the spring upper seat (1) and the spring lower seat (7) are located between a bogie frame (9) and a wheelset axle box (8), and the spring upper seat (1) is fixedly connected to the bogie frame (9), the buffer spring (2) is arranged between the spring upper seat (1) and the spring lower seat (7), and the process pin (3) connected to the bogie frame (9) passes through the center holes on the spring upper seat (1) and the spring lower seat (7) and extends to the outside of the spring lower seat (7), the lower end of the spring lower seat (7) is adapted to be in the mounting hole on the wheelset axle box (8), and the vibration-damping pad (6) located on the upper end surface of the wheelset axle box (8) is sleeved on the spring lower seat (7), and the characteristics are as follows: The lower end of the process pin (3) is detachably fixedly connected to the locking piece to achieve a rigid connection between the bogie frame (9) and the wheelset axle box (8) when lifting; The locking member is a lifting nut (12), the lower end of the process pin (3) is formed with an external thread (10), and the lifting washer (11) below the wheelset axle box (8) is sleeved on the process pin (3), and the lifting nut (12) and the external thread (10) at the lower end of the process pin (3) are adapted and tightened to achieve a rigid connection between the bogie frame (9) and the wheelset axle box (8); The lower end of the process pin (3) is formed with a long hole (13) and the long hole (13) is axially parallel to the process pin (3); the lower end of the process pin (3) is formed with a pin hole (14) which is perpendicular to the long hole (13); the flat pin (5) passes through the long hole (13) and is installed on the process pin (3); and the cotter pin (4) passes through the pin hole (14) and the hole on the flat pin (5) to lock the flat pin (5); before the bogie frame (9) is lifted along with the entire vehicle, the cotter pin (4) and the flat pin (5) are removed in turn, and the lifting washer (11) is put on the process pin (3) and is lifted after being adapted to the external thread (10) at the lower end of the process pin (3) through the lifting nut (12) and tightened.

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