Wheel changing tool for non-falling bogie of rail transit vehicle

Abstract

The utility model provides a wheel changing tool for a non-falling bogie of a rail transit vehicle. The wheel changing tool comprises a base part and a sliding part. The foundation part comprises a foundation frame, and a walking device is arranged on the lower side of the foundation frame. The sliding part comprises a sliding frame, a sliding seat is arranged on the foundation frame, the sliding frame is matched with a sliding rail on the sliding seat, and a wheel pair supporting unit is arranged on the sliding frame; the wheel set supporting units comprise wheel set supports, each wheel set support is provided with a wheel set supporting mechanism, the upper end of each wheel set supporting mechanism is provided with a wheel set bearing seat, the foundation frame comprises a front supporting arm and a rear supporting arm, the front supporting arm is provided with a front supporting unit, the rear supporting arm is provided with a rear supporting unit, and each front support is provided with a front supporting mechanism; the rear supporting unit comprises rear supports, and each rear support is provided with a rear supporting mechanism. The operation of taking out an old wheel set and putting in a new wheel set can be conveniently conducted, the new wheel set can be jacked to a mounting position through the wheel set supporting mechanism, operation is flexible, and time and labor are saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of maintenance of rail transit facilities, and particularly relates to a wheel-changing tooling for a rail transit vehicle without dropping the bogie. Background Art

[0002] After the dimensions of the wheelset of an electric multiple unit reach the wear limit, it needs to be replaced during the maintenance process. The traditional method for replacing the wheelset is to disassemble the center pin, safety cable, height adjustment rod, brake air pipe, current collector cable, motor wiring, and grounding wire, etc., then separate the bogie from the car body, and remove the bogie with the wheelset as a whole. Then, use a crane to lift the bogie to separate and replace the wheelset. After replacing the wheelset, the bogie needs to be lifted near the car body and then manually carried to the bottom of the car body for assembly. This traditional operation method is time-consuming and laborious, with low work efficiency and many operation risk points. Therefore, it is necessary to design a tooling for facilitating the replacement of the wheelset to assist the wheelset replacement operation, so as to reduce labor costs and lower operation risks. Summary of the Invention

[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes a wheel-changing tooling for a rail transit vehicle without dropping the bogie.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A wheel-changing tooling for a rail transit vehicle without dropping the bogie includes a base part and a sliding part; the base part includes a base frame, and walking devices are symmetrically arranged on the lower side of the base frame; the sliding part includes a sliding frame, a sliding seat is arranged on the base frame, the sliding frame is slidably matched with the slide rail on the sliding seat, and wheel pair support units are symmetrically arranged on the upper side of the sliding frame; the wheel pair support unit includes a wheel pair support, and a wheel pair support mechanism is arranged on each wheel pair support. A wheel pair support seat is arranged at the upper end of the wheel pair support mechanism. The base frame includes a front support arm and a rear support arm symmetrically arranged on both sides of the slide rail. A front support unit is arranged on the front support arm, and a rear support unit is arranged on the rear support arm. The front support unit includes front supports symmetrically arranged at both ends of the front support arm, and a front support mechanism is arranged on each front support; the rear support unit includes rear supports symmetrically arranged at both ends of the rear support arm, and a rear support mechanism is arranged on each rear support. Support seats are arranged at the upper ends of both the front support mechanism and the rear support mechanism.

[0006] Further, the walking device includes a base, a walking wheel frame is arranged on one side of the base, walking wheels are installed on the walking wheel frame, and a telescopic support leg is installed at the lower end of the base.

[0007] Further, the walking wheels are universal wheels.

[0008] Further, the telescopic support leg is a screw jack installed at the lower end of the base.

[0009] Furthermore, the retractable support leg is screwed to the support column of the base by threading, the upper end of the support column is provided with a threaded section, and the lower end surface of the base is provided with a threaded hole matching the threaded section.

[0010] Furthermore, the wheelset supporting mechanism comprises a driving cylinder, and the wheelset supporting seat is mounted on the top of the driving cylinder.

[0011] Furthermore, an arc-shaped portion is provided on the upper end surface of the support seat.

[0012] Furthermore, a wheelset limiting groove is provided on the upper surface of the wheelset supporting seat.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] The invention has a reasonable structural design, and the tooling can be conveniently moved to the bottom of the vehicle body, and the bogie and the wheelset can be respectively supported by various supporting mechanisms. During the process of disassembling the wheelset, the bogie will not separate from the vehicle body, and the old wheelset can be conveniently taken out and the new wheelset can be put in by sliding the sliding frame on the sliding seat, and the new wheelset can be lifted to the installation position by the wheelset supporting mechanism. The operation is flexible, time-saving and labor-saving, the working efficiency is high, and the risk factors in the process of wheelset replacement are eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 A schematic diagram of the structure created by the present invention;

[0017] Figure 2 A schematic diagram of a walking device in the invention;

[0018] Figure 3 This is a schematic diagram of the present invention without the sliding frame;

[0019] Figure 4 The present invention is a schematic diagram of the sliding frame after sliding outward. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0021] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "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 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 thus should not be construed as a limitation to the present invention. In addition, the terms "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, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "mounted", "connected", "coupled" 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 invention can be understood through specific circumstances.

[0023] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0024] A wheel-changing tooling for a non-drop bogie of a rail transit vehicle, as Figures 1 to 4 shown, includes a base part and a sliding part; the base part includes a base frame 1, and 4 groups of traveling devices 2 are symmetrically arranged on the lower side of the base frame; the sliding part includes a sliding frame 3, a sliding seat 4 is arranged on the base frame, the sliding frame is slidably matched with the slide rail 5 on the sliding seat, and wheel set support units are symmetrically arranged on the upper side of the sliding frame. The wheel set support unit includes a wheel set support 6, and a wheel set support mechanism 7 is arranged on each wheel set support. The upper end of the wheel set support mechanism is provided with a wheel set support seat 8.

[0025] As an example, the wheel set support mechanism includes a driving cylinder, and the wheel set support seat is installed on the top of the driving cylinder. As Figure 4 shown, it is the state after the sliding frame slides outwards along the sliding seat. In this state, the wheel set support seat is exposed outside the vehicle body, which is very convenient for taking and placing the wheel set.

[0026] Preferably, a wheelset limiting groove 20 is provided on the upper surface of the wheelset supporting seat, into which the wheelset can be inserted and withdrawn from the bottom of the vehicle body. The new wheelset is placed in the limiting groove and then pushed into the bottom of the vehicle for installation. During the process of the sliding frame sliding in and out from the bottom of the vehicle, the wheelset will not fall off, which is very convenient for wheel changing operations.

[0027] The basic frame includes a front support arm 9 and a rear support arm 10 symmetrically arranged on both sides of the slide rail, a front support unit is provided on the front support arm, and a rear support unit is provided on the rear support arm. The front support unit includes front supports 11 symmetrically arranged at both ends of the front support arm, and a front support mechanism 12 is provided on each front support; the rear support unit includes rear supports 13 symmetrically arranged at both ends of the rear support arm, and a rear support mechanism 14 is provided on each rear support, and a support seat 15 is provided at the upper end of the front support mechanism and the upper end of the rear support mechanism. Usually, an arc portion is provided on the upper end surface of the support seat to adapt to the surface structure of the bogie and effectively support the guide frame.

[0028] Typically, the walking device includes a base 16, a walking wheel frame 17 is provided on one side of the base, a walking wheel 18 is installed on the walking wheel frame, and a retractable support leg 19 is installed at the lower end of the base. As an example, the walking wheel adopts a universal wheel. Under normal circumstances, with the help of the universal wheel, the tooling can be easily moved, and the use is more efficient and convenient.

[0029] In an optional embodiment, the retractable support leg adopts a threaded jack installed at the lower end of the base. By controlling the extension of the jack, the retractable support leg can be pressed against the ground, thereby playing a role in bearing the load when the wheelset is placed on the tooling. In another optional embodiment, the retractable support leg adopts a support column screwed to the base, the upper end of the support column is provided with a threaded section, and the lower end surface of the base is provided with a threaded hole that cooperates with the threaded section. By screwing the support column, the support column is supported on the ground, thereby playing a role in bearing the load when the wheelset is placed on the tooling. It should be pointed out that when the weight of the wheelset does not exceed the carrying capacity of the running wheels, the retractable support leg can be used without supporting the ground, and the running wheels can be used directly to bear the load.

[0030] When in use, first retract the supporting mechanisms of the tooling to the initial position, and then push them to the bottom of the vehicle body, so that the front and rear supporting units correspond to the front and rear ends of the vehicle body in the direction of travel respectively, and perform a jacking action through the front and rear supporting mechanisms, so that the supporting seats on each supporting mechanism respectively bear against the bogie, and then perform a jacking action through the wheelset supporting mechanism, so that the wheelset supporting seat supports the wheelset (the wheelset is inserted into the wheelset limiting groove), to ensure that during the removal of the wheelset, the bogie does not separate from the vehicle body, and the wheelset does not fall and cause safety risks (the supporting mechanisms are independent of each other, so the jacking heights of each supporting mechanism can be different according to needs, which has high flexibility and strong adaptability, and can better match the actual working conditions).

[0031] Then the wheelset disassembly operation is carried out. The wheelset is directly supported by the wheelset supporting seat, and then the wheelset supporting mechanism is used to perform a retraction action to move the wheelset supporting seat downward. When the wheelset on the wheelset supporting seat no longer interferes with the bogie, the sliding frame is directly pushed to one side of the car body, and then the old wheelset on the wheelset supporting unit on that side is removed, and after the new wheelset is placed, the sliding frame is pushed to the other side of the car body, and then the old wheelset on the wheelset supporting unit on that side is removed, and the new wheelset is placed, and finally the sliding frame is pushed to the bottom of the car body, so that the new wheelset is aligned with the installation position, and then the wheelset supporting mechanism is used to perform a jacking action to jack the new wheelset to the installation position, and assembly is performed to complete the work of replacing the wheelset.

[0032] The invention has a reasonable structural design, and the tooling can be conveniently moved to the bottom of the vehicle body, and the bogie and the wheelset can be respectively supported by various supporting mechanisms. During the process of disassembling the wheelset, the bogie will not separate from the vehicle body, and the old wheelset can be conveniently taken out and the new wheelset can be put in by sliding the sliding frame on the sliding seat, and the new wheelset can be lifted to the installation position by the wheelset supporting mechanism. The operation is flexible, time-saving and labor-saving, the working efficiency is high, and the risk factors in the process of wheelset replacement are eliminated.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wheel changing tool for a rail transit vehicle without dropping the bogie, characterized in that: It includes a basic part and a sliding part; the basic part includes a basic frame, and a walking device is symmetrically arranged on the lower side of the basic frame; the sliding part includes a sliding frame, a sliding seat is provided on the basic frame, the sliding frame slides with the slide rail on the slide seat, and a wheelset support unit is symmetrically arranged on the upper side of the sliding frame; the wheelset support unit includes a wheelset support, each wheelset support is provided with a wheelset support mechanism, and the upper end of the wheelset support mechanism is provided with a wheelset supporting seat, the basic frame includes a front support arm and a rear support arm symmetrically arranged on both sides of the slide rail, the front support arm is provided with a front support unit, and the rear support arm is provided with a rear support unit, the front support unit includes front supports symmetrically arranged at both ends of the front support arm, and each front support is provided with a front support mechanism; the rear support unit includes rear supports symmetrically arranged at both ends of the rear support arm, and each rear support is provided with a rear support mechanism, and support seats are provided at the upper end of the front support mechanism and the upper end of the rear support mechanism.

2. The wheel changing tool for a rail transit vehicle without dropping the bogie according to claim 1, characterized in that: The walking device comprises a base, one side of the base is provided with a walking wheel frame, a walking wheel is installed on the walking wheel frame, and a retractable supporting leg is installed at the lower end of the base.

3. The wheel changing tool for a rail transit vehicle without dropping the bogie according to claim 2, characterized in that: The traveling wheel is a universal wheel.

4. The wheel changing tool for a rail transit vehicle without dropping the bogie according to claim 2, characterized in that: The retractable supporting legs adopt threaded jacks installed on the lower end of the base.

5. The wheel changing tool for a rail transit vehicle without dropping the bogie according to claim 2, characterized in that: The telescopic support leg is screwed to the support column of the base by threading, the upper end of the support column is provided with a threaded section, and the lower end surface of the base is provided with a threaded hole matched with the threaded section.

6. The wheel changing tool for a rail transit vehicle without dropping the bogie according to claim 1, characterized in that: The wheelset supporting mechanism comprises a driving cylinder, and the wheelset supporting seat is installed on the top of the driving cylinder.

7. The wheel changing tool for a rail transit vehicle without dropping the bogie according to claim 1, characterized in that: An arc portion is provided on the upper end surface of the support seat.

8. The wheel changing tool for rail transit vehicles without dropping bogies according to claim 1, characterized in that: A wheelset limiting groove is arranged on the upper surface of the wheelset supporting seat.

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