Subway axle bridge overhauling device

By designing a multi-degree-of-freedom axle bridge maintenance device, and utilizing a vertically set rotating shaft structure to achieve rapid angle adjustment of the axle bridge, the problem of complex and costly subway axle bridge maintenance process has been solved, maintenance efficiency has been improved, and equipment requirements have been reduced.

CN224493521UActive Publication Date: 2026-07-14ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHUZHOU ELECTRIC LOCOMOTIVE CO LTD
Filing Date
2025-07-07
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

In existing technologies, the maintenance of subway axle bridges requires frequent hoisting and relocation, resulting in a complex and costly maintenance process.

Method used

A subway axle bridge maintenance device is designed, which adopts a multi-degree-of-freedom fixing component and rotating shaft structure. By vertically setting the first and second rotating shafts, the axle bridge can be quickly adjusted in angle, reducing the difficulty of maintenance.

Benefits of technology

It simplifies the axle bridge maintenance process, avoids the risks associated with repeated hoisting, improves maintenance efficiency, and saves equipment costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a subway axle bridge overhauling device relates to equipment maintenance technical field, the subway axle bridge overhauling device of above -mentioned includes fixed plate, first pivot and second pivot, is equipped with a plurality of fixed parts for fixing axle bridge on fixed plate, and fixed part is connected with first pivot, and first pivot is used for driving fixed part to rotate around the axial direction of first pivot, and first pivot is connected with second pivot, and makes fixed part rotate around the axial direction of second pivot, and the axis of first pivot and second pivot is perpendicular to set, adopts two directions's rotation degree of freedom, can take into account the position adjustment demand of axle bridge maintenance each stage, avoids the complicated step that axle bridge needs repeatedly hoisting to different work stations to carry out operation in each stage during the maintenance process, improves the efficiency of overhauling, reduces the whole overhauling cost.
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Description

Technical Field

[0001] This utility model relates to the field of equipment maintenance technology, and more specifically, to a subway axle bridge maintenance device. Background Technology

[0002] Rubber-tired metro systems employ a dual-track system of rubber and steel wheels. As a typical urban rail transit system, it features a unique structure with both rubber and steel wheels as running gear. The vehicles possess strong track adaptability and climbing ability, good environmental friendliness, and high safety and reliability. Rubber tires serve as the running wheels, while steel wheels act as auxiliary wheels, used for crossing switches and braking. Rubber-tired metro systems use axle bridges as connecting components, making axle bridge maintenance particularly important. Currently, axle bridge maintenance requires frequent lifting and repositioning for component repairs, necessitating the use of lifting equipment to adjust the axle bridge at different angles. The entire maintenance process is complex and costly.

[0003] In conclusion, how to reduce the difficulty of subway axle bridge maintenance is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a subway axle bridge maintenance device that uses a multi-degree-of-freedom approach to quickly and conveniently adjust the axle bridge angle, facilitating maintenance at different angles and reducing the difficulty of axle bridge maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A subway axle bridge maintenance device, comprising:

[0007] A fixing plate, wherein the fixing plate is provided with a plurality of fixing components for fixing the shaft bridge;

[0008] A first rotating shaft, wherein the fixing member is connected to the first rotating shaft, and the first rotating shaft is used to drive the fixing member to rotate around the axis of the first rotating shaft;

[0009] The second rotating shaft connects the first rotating shaft to the second rotating shaft and causes the fixing member to rotate about the axis of the second rotating shaft. The axes of the first rotating shaft and the second rotating shaft are perpendicular to each other.

[0010] Furthermore, the fixing member is a columnar structure and includes a support part and a mounting part, wherein a fixing nut is threaded onto the mounting part.

[0011] Furthermore, in this invention, the diameter of the support portion is larger than the diameter of the mounting portion.

[0012] Furthermore, this utility model also includes:

[0013] The mounting ring has a fixing plate rotatably mounted inside it. The first rotating shaft is coaxial with the mounting ring, and the second rotating shaft is connected to the mounting ring.

[0014] Furthermore, this utility model also includes:

[0015] A bracket is mounted on the mounting ring, and a first driving component is mounted on the bracket. The first driving component is used to control the rotation of the first rotating shaft.

[0016] Furthermore, this utility model also includes:

[0017] At least one support column, one end of the second rotating shaft is rotatably mounted on the support column, and the other end of the second rotating shaft is fixedly connected to the mounting ring.

[0018] Furthermore, in this invention, there are two support columns, located on both sides of the mounting ring respectively. The other of the two support columns is rotatably mounted with an auxiliary shaft coaxial with the second rotating shaft. The auxiliary shaft is fixedly connected to the end of the mounting ring away from the second rotating shaft.

[0019] Furthermore, this invention also includes a second driving member for controlling the rotation of the second rotating shaft, the second driving member being mounted on the support column.

[0020] Furthermore, in this invention, both the first driving component and the second driving component are electric motors.

[0021] Furthermore, both of the support columns in this invention employ a telescopic structure to adjust the length of the support columns.

[0022] The subway axle bridge maintenance device provided by this utility model has several fixing components on a fixed plate for fixing the axle bridge. The axle bridge is fixed by the fixing components, forming an integral part with the fixed plate. Therefore, when the fixed plate rotates, the axle bridge can be controlled to rotate accordingly. The rotation of the fixed plate is achieved by a first rotating shaft and a second rotating shaft. The axes of the first rotating shaft and the second rotating shaft are set perpendicularly. The first rotating shaft is used to drive the fixing components to rotate around the axis of the first rotating shaft, while the second rotating shaft allows the fixing components to rotate around the axis of the second rotating shaft. That is, this device has rotational freedom in two directions, which can take into account the position adjustment needs of axle bridge maintenance at various stages. It avoids the cumbersome steps of repeatedly hoisting the axle bridge to different work positions for operation at various stages during the maintenance process, avoids the potential risks that may be brought about during hoisting, improves maintenance efficiency, and saves the cost of using multiple maintenance equipment together. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the device provided by the present invention from the first angle axis.

[0025] Figure 2 A schematic diagram of the second angle axis of the device provided by this utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the device provided by the present invention from the third angle axis.

[0027] Figure 4 A structural schematic diagram of the device provided by this utility model from a first angle (front view);

[0028] Figure 5 This is a structural schematic diagram of the device provided by this utility model from a first angle side view.

[0029] Figures 1-5 In the accompanying drawings, the reference numerals include:

[0030] 1. Mounting ring; 2. Fixing plate; 3. Auxiliary shaft; 4. Fixing component; 5. Support column; 6. Second rotating shaft; 7. Second driving component; 8. First rotating shaft; 9. First driving component; 10. Bracket. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] The core of this utility model is to provide a subway axle bridge maintenance device, which adopts a multi-degree-of-freedom approach to quickly and conveniently adjust the axle bridge angle, facilitating maintenance at different angles and reducing the difficulty of axle bridge maintenance.

[0033] Please refer to Figure 1A subway axle bridge maintenance device includes a fixing plate 2, a first rotating shaft 8, and a second rotating shaft 6. The fixing plate 2 is provided with a plurality of fixing members 4 for fixing the axle bridge. The fixing members 4 are connected to the first rotating shaft 8. The first rotating shaft 8 is used to drive the fixing members 4 to rotate around the axis of the first rotating shaft 8. The first rotating shaft 8 is connected to the second rotating shaft 6 and causes the fixing members 4 to rotate around the axis of the second rotating shaft 6. The axes of the first rotating shaft 8 and the second rotating shaft 6 are set perpendicularly.

[0034] It should be noted that the fixing plate 2 in this embodiment of the present invention can be of any shape, as long as it satisfies the function of fixing the shaft bridge.

[0035] Optionally, in some embodiments, bearings are provided at the rotation positions of both the first rotating shaft 8 and the second rotating shaft 6 to reduce wear and noise during rotation.

[0036] In use, the fixing plate 2 is equipped with several fixing parts 4 for fixing the axle bridge. The axle bridge is fixed by the fixing parts 4, making it an integral part of the fixing plate 2. Therefore, when the fixing plate 2 rotates, the axle bridge can be controlled to rotate accordingly. The rotation of the fixing plate 2 is achieved by the first rotating shaft 8 and the second rotating shaft 6. The axes of the first rotating shaft 8 and the second rotating shaft 6 are set perpendicularly. The first rotating shaft 8 is used to drive the fixing parts 4 to rotate around the axis of the first rotating shaft 8. At the same time, the second rotating shaft 6 can make the fixing parts 4 rotate around the axis of the second rotating shaft 6. That is, this device has rotational freedom in two directions, which can take into account the position adjustment needs of the axle bridge at various stages of maintenance. It avoids the cumbersome steps of repeatedly hoisting the axle bridge to different work positions for operation at various stages during the maintenance process, avoids the potential risks that may be brought about during hoisting, improves the efficiency of maintenance, and saves the cost of using multiple maintenance equipment together.

[0037] Please refer to Figure 1 In some embodiments, the fastener 4 is a columnar structure and includes a support part and a mounting part. A fixing nut is threaded onto the mounting part. Specifically, the axle bridge itself has mounting holes for fixing it to the frame. Therefore, a fixing post corresponding to the mounting hole of the axle bridge is provided on the fixing plate 2. By inserting the fixing post into the mounting hole and fixing the nut at the same time, the axle bridge can be fixed to the fixing plate 2, thus achieving the tooling requirements of the axle bridge.

[0038] Optionally, in some embodiments, the diameter of the fixing nut is larger than the mounting hole on the shaft bridge, and a rubber sleeve is provided on the outside of the nut to effectively prevent wear on the shaft bridge itself.

[0039] Optionally, in some embodiments, the diameter of the support portion is larger than the diameter of the mounting portion. That is, the fastener 4 is divided into two sections, and a step is formed between the support portion and the mounting portion. Therefore, when the mounting hole of the axle bridge enters the mounting portion, the position of the axle bridge can be fixed. Thus, the support portion can limit the position of the axle bridge and fix its position.

[0040] Optionally, in some embodiments, the support portion may adopt a frustum structure. Therefore, when the support portion is inserted into the mounting hole of the shaft bridge, since the size of the mounting hole of the shaft bridge varies according to different shaft bridge models, the frustum-shaped support portion can adapt to mounting holes of different sizes, which is beneficial to improving the versatility of the device.

[0041] In the above embodiment, the mounting part is frustum-shaped, and a threaded part is provided above the mounting part for mounting and fixing threads.

[0042] Optionally, in some embodiments, the fixing plate 2 is provided with a plurality of adjustment holes that cooperate with the fixing member 4. The position of the fixing member 4 can be adjusted by adjusting the adjustment holes. Specifically, the adjustment holes are strip-shaped or arc-shaped holes. The bottom of the support part is provided with a movable part. The diameter of the movable part is smaller than that of the support part. The end of the movable part is threaded with a movable nut. The width of the adjustment hole is smaller than that of the support part and the movable nut. Therefore, the fixing member 4 can be fixed to the fixing plate 2 by cooperating with the movable nut and the support part.

[0043] Please refer to Figure 2 In some embodiments, a mounting ring 1 is also included, with the fixing plate 2 rotatably mounted inside the mounting ring 1. The first rotating shaft 8 is coaxially arranged with the mounting ring 1. That is, by rotatably mounting the fixing plate 2 to the mounting ring 1, and with the first rotating shaft 8 and the mounting ring 1 coaxially arranged, and the second rotating shaft 6 connected to the mounting ring 1, specifically, the second rotating shaft 6 is fixedly connected to the outer wall of the mounting ring 1. Therefore, the rotation of the fixing plate 2 can be achieved through the first rotating shaft 8, so that the axle bridge can rotate along the axial direction of the first rotating shaft 8.

[0044] In the above embodiment, the mounting ring 1 is a circumferentially formed part with an L-shaped cross-section, and a bearing is fixedly installed on the inner wall of the mounting ring 1. The fixing plate 2 is fixedly connected to the inner wall of the bearing. Therefore, the bearing can increase the smoothness of the rotation of the fixing plate 2 and reduce wear and noise.

[0045] Optionally, in some embodiments, a cover plate is also installed on the mounting ring 1. Specifically, the cover plate is installed on the mounting ring 1 to fix the bearing.

[0046] Please refer to Figure 3In some embodiments, a bracket 10 is also included. The bracket 10 is mounted on the mounting ring 1, and a first driving member 9 is mounted on the bracket 10. The first driving member 9 is used to control the rotation of the first rotating shaft 8. That is, the bracket 10 is fixed on the mounting ring 1, and the first driving member 9 is mounted on the bracket 10. The first driving member 9 is used to control the rotation of the first rotating shaft 8. By controlling the rotation of the first rotating shaft 8 through the first driving member 9, the shaft bridge can be rotated along the first rotation direction.

[0047] Optionally, in some embodiments, in order to further improve the fixation of the fixed plate 2 after rotation, a bolt is threaded on the mounting ring 1. Specifically, the position of the fixed plate 2 can be fixed after the bolt nut contacts the fixed plate 2.

[0048] Optionally, in some embodiments, the edge of the fixing plate 2 is provided with a plurality of positioning holes evenly distributed around the axis of the first rotating shaft 8, and the mounting ring 1 is provided with a positioning rod that cooperates with the positioning holes. After the fixing rod is inserted into the positioning hole, the position of the fixing plate 2 can be fixed.

[0049] Optionally, in some embodiments, the bracket 10 has a U-shaped structure. Specifically, the bracket 10 includes two parallel support rods and a crossbar perpendicular to the axis of the first rotating shaft 8, and the first driving member 9 is mounted on the crossbar.

[0050] In the above embodiment, the positioning rod can be slidably or threadedly installed on the crossbar, so the position of the fixing plate 2 can be fixed by moving the positioning rod to insert it into the positioning hole.

[0051] Please refer to Figure 4 In some embodiments, at least one support column 5 is also included, one end of the second rotating shaft 6 is rotatably mounted on the support column 5, and the other end of the second rotating shaft 6 is fixedly connected to the mounting ring 1. That is to say, the second rotating shaft 6 is fixed by the support column 5, thereby achieving the fixation of the entire device.

[0052] Optionally, in some embodiments, there are two support columns 5, located on both sides of the mounting ring 1 respectively. An auxiliary shaft 3 coaxial with the second rotating shaft 6 is rotatably mounted on the other support column 5. The auxiliary shaft 3 is fixedly connected to the end of the mounting ring 1 away from the second rotating shaft 6. Specifically, the device is fixed by the two support columns 5, and the auxiliary shaft 3 is rotatably mounted on the other support column 5. Therefore, the mounting ring 1 can be effectively fixed by the cooperation of the auxiliary shaft 3 and the second rotating shaft 6, ensuring the stability of the mounting ring 1 during the installation process.

[0053] Optionally, in some embodiments, a mounting plate is also included, on which both support columns 5 are fixed, thereby fixing the positions of the two support columns 5 and further improving the robustness of the device.

[0054] In the above embodiments, in order to make the height of the device easy to adjust, several bolt bases are installed on the mounting plate. By turning the bolts to fix the bases, the overall rotation height can be adjusted to meet the maintenance work at different heights.

[0055] In the above embodiment, both support columns 5 adopt a telescopic structure to adjust the length of the support column 5. Specifically, both support columns 5 are hollow structures and are divided into two sections for sliding installation to achieve telescopic function. At the same time, the support columns 5 are provided with positioning bolts and positioning holes to fix their length after telescopic adjustment.

[0056] Please refer to Figure 4 In some embodiments, a second drive member 7 for controlling the rotation of the second rotating shaft 6 is also included, the second drive member 7 being mounted on the support column 5.

[0057] Optionally, in some embodiments, both the first driving member 9 and the second driving member 7 are motors. That is, the rotation of the first rotating shaft 8 and the second rotating shaft 6 is controlled by the motor to achieve rapid fixation of the position of the fixing plate 2, and the locking function of the motor can increase the firmness of the fixing plate 2.

[0058] In other words, the key point of this utility model is that the subway axle bridge is fixed by the fixing member 4, making it an integral part of the fixing plate 2. Therefore, when the fixing plate 2 rotates, the axle bridge can be controlled to rotate accordingly. The rotation of the fixing plate 2 is achieved by the first rotating shaft 8 and the second rotating shaft 6. The axes of the first rotating shaft 8 and the second rotating shaft 6 are set perpendicularly. The first rotating shaft 8 is used to drive the fixing member 4 to rotate around the axis of the first rotating shaft 8. At the same time, the second rotating shaft 6 can make the fixing member 4 rotate around the axis of the second rotating shaft 6. That is, this device has rotational freedom in two directions, which can take into account the position adjustment needs of the axle bridge at various stages of maintenance. It avoids the cumbersome steps of repeatedly hoisting the axle bridge to different work positions for operation at various stages during the maintenance process, avoids the potential risks that may be brought about during hoisting, improves the efficiency of maintenance, and saves the cost of using multiple maintenance equipment.

[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0060] The above provides a detailed description of a subway axle bridge maintenance device provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core idea of ​​this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A subway axle bridge maintenance device, characterized in that, include: A fixing plate (2) is provided with a plurality of fixing parts (4) for fixing the shaft bridge. The first rotating shaft (8) is connected to the fixing member (4), and the first rotating shaft (8) is used to drive the fixing member (4) to rotate around the axis of the first rotating shaft (8); The second rotating shaft (6) is connected to the first rotating shaft (8) and causes the fixing member (4) to rotate around the axis of the second rotating shaft (6). The axes of the first rotating shaft (8) and the second rotating shaft (6) are set perpendicularly.

2. The subway axle bridge maintenance device according to claim 1, characterized in that, The fastener (4) is a columnar structure and includes a support part and a mounting part, with a fixing nut threaded onto the mounting part.

3. The subway axle bridge maintenance device according to claim 2, characterized in that, The diameter of the support part is larger than the diameter of the mounting part.

4. The subway axle bridge maintenance device according to claim 1, characterized in that, Also includes: Mounting ring (1), the fixing plate (2) is rotatably mounted inside the mounting ring (1), the first rotating shaft (8) is coaxially arranged with the mounting ring (1), and the second rotating shaft (6) is connected to the mounting ring (1).

5. The subway axle bridge maintenance device according to claim 4, characterized in that, Also includes: A bracket (10) is mounted on the mounting ring (1), and a first driving member (9) is mounted on the bracket (10). The first driving member (9) is used to control the rotation of the first rotating shaft (8).

6. The subway axle bridge maintenance device according to claim 5, characterized in that, Also includes: At least one support column (5), one end of the second rotating shaft (6) is rotatably mounted on the support column (5), and the other end of the second rotating shaft (6) is fixedly connected to the mounting ring (1).

7. The subway axle bridge maintenance device according to claim 6, characterized in that, There are two support columns (5), which are located on both sides of the mounting ring (1). The other support column (5) is rotatably mounted with an auxiliary shaft (3) coaxial with the second rotating shaft (6). The auxiliary shaft (3) is fixedly connected to the end of the mounting ring (1) away from the second rotating shaft (6).

8. The subway axle bridge maintenance device according to claim 7, characterized in that, It also includes a second drive member (7) for controlling the rotation of the second shaft (6), the second drive member (7) being mounted on the support column (5).

9. The subway axle bridge maintenance device according to claim 8, characterized in that, Both the first driving component (9) and the second driving component (7) are motors.

10. The subway axle bridge maintenance device according to any one of claims 6-9, characterized in that, Both of the support columns (5) adopt a telescopic structure to adjust the length of the support column (5).