Adjustment method for emergency spring gasket of subway train

Abstract

The present invention discloses an adjustment method for an emergency spring gasket of a subway train, which includes the following steps: First, park the train on the inspection track and adjust its pressure to the working air pressure; Raise or lower the car body by synchronously adjusting the height valves of the air springs located on both sides of the train car body, so as to place a number of support devices between the top plates of each air spring and the frame for supporting the car body; Use a jacking device to jack up the bottom of the emergency spring and then adjust the gasket; After the adjustment is completed, remove each jacking device, synchronously adjust the height valves of the air springs on both sides of the car body to raise the car body and then remove each support device; Then adjust the height valves of each air spring to lower the car body to an appropriate height and then measure the car body parameters. After the measurement is qualified, the adjustment of the emergency spring gasket of the train can be completed. The implementation process of this solution is simple and efficient, without the need to use an engineering vehicle to transfer the train to a dedicated car body lifting lane and use large-scale dedicated car body lifting equipment to lift the car body, which is beneficial to saving equipment costs and labor costs.

Description

Technical Field

[0001] The present invention belongs to the field of subway train maintenance, and particularly relates to a method for adjusting emergency spring gaskets of subway trains. Background Art

[0002] At present, during the operation of subway trains on the main line, the wheel diameters of some trains will become smaller. The smaller wheel diameters will cause a height difference on both sides of the car body, and the height difference of the car body needs to be solved by adjusting the emergency springs by adding or removing gaskets. On the other hand, after the overall assembly operation of the major overhaul of the train is completed, various parameters such as the height on both sides of the car body need to be measured. If the parameters of the vehicle height exceed the specified range, the emergency springs also need to be adjusted by adding or removing gaskets to adjust the height parameters on both sides of the car body to within the specified range. However, at present, this operation requires using an engineering vehicle to move the train to a dedicated car lifting lane, and using large-scale dedicated car lifting equipment to lift the car body in this lane before the emergency springs can be adjusted by adding or removing gaskets. After completing the operation of adding or removing gaskets, the train needs to be re-shunted to other lanes for the next process. This operation mode requires a large amount of equipment cost, labor cost and working hours, and because this operation requires a long working time, it seriously affects the vehicle supply and operation efficiency. When the gasket adding is not timely due to low operation efficiency, a series of problems such as awning tilt and unqualified coupler height will also occur.

[0003] Therefore, a new technology is needed to solve the problem that it is not convenient to lift the car body during the adjustment of emergency spring gaskets in the prior art. Summary of the Invention

[0004] To solve the above problems in the prior art, the present invention provides a method for adjusting emergency spring gaskets of subway trains, which has the effect of facilitating the lifting of the car body during the adjustment of emergency spring gaskets.

[0005] The present invention adopts the following technical solutions:

[0006] A method for adjusting emergency spring gaskets of subway trains includes the following steps:

[0007] S1. Park the train on the inspection track and adjust its pressure: Park the train that needs to adjust the emergency spring gaskets on the inspection track, and then adjust the air pressure of the train to the working air pressure.

[0008] S2. Adjust the car body height and support the train car body: Synchronously adjust the height valves of the air springs located on both sides of the train car body to raise or lower the train car body, so as to place a number of support devices between the top plates of the air springs and the bogies, and make the upper and lower ends of each support device respectively abut against the top plate of the air spring and the bogie. Each support device is used to support the train car body in the vertical direction.

[0009] S3. Jack up the emergency springs and adjust the shims: Remove the fixing bolts of each emergency spring, place each jacking device at the bottom of the emergency spring, drive each jacking device to jack up the bottom of each emergency spring vertically to an appropriate height, and then replace or add / remove shims at the bottom of each emergency spring;

[0010] S4. Remove each jacking device;

[0011] S5. Remove each support device: Synchronously adjust the height valves of the air springs on both sides of the train car body to raise the train car body, so as to remove each support device;

[0012] S6. Measure the car body parameters: First, synchronously adjust the height valves of the air springs on both sides of the train car body to lower the train car body to an appropriate height, and then measure the car body parameters. After the car body parameters are measured to be qualified, the adjustment of the emergency spring shims of the train can be completed.

[0013] As a further improvement of the technical solution of the present invention, before performing step S2, first measure the heights on both sides of the train, and calculate the parameter range for adjusting the emergency springs on both sides of the train.

[0014] As a further improvement of the technical solution of the present invention, in step S2, the several support devices are symmetrically arranged on both sides of the car body.

[0015] As a further improvement of the technical solution of the present invention, in step S2, first synchronously adjust the height valve nuts of the air springs on both sides of the train car body to raise the train car body to an appropriate height, so that the distance between the air spring top plate and the frame is greater than the height of the support device. At this time, each support device can be placed between the air spring top plate and the frame, and then synchronously adjust the height valve nuts of the air springs on both sides of the train car body, so that the train car body descends until the upper and lower ends of each support device are respectively in contact with the top plate of the air spring and the frame.

[0016] As a further improvement of the technical solution of the present invention, in step S3, before placing the jacking device at the bottom of each emergency spring, first relieve the train parking brake.

[0017] As a further improvement of the technical solution of the present invention, in step S3, when synchronously jacking up each emergency spring at the bottom of each emergency spring by using the jacking device, respectively synchronously measure the heights on both sides of the train car body.

[0018] As a further improvement of the technical solution of the present invention, in step S4, after the operation of replacing or adding / removing shims is completed, remove each jacking device and tighten the fixing bolts of each emergency spring.

[0019] As a further improvement of the technical solution of the present invention, in step S5, during the process of raising the train car body, the heights on both sides of the train are synchronously monitored.

[0020] As a further improvement of the technical solution of the present invention, each of the support devices includes a support body and a support base. The support base is horizontally arranged, the support body is perpendicular to the upper surface of the support base, and the support body is fixedly connected to the support base to form an inverted T shape.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] The height valves of the air springs located on both sides of the train car body are synchronously adjusted to raise or lower the train car body, so as to place a number of support devices between the top plates of each air spring and the frame, and make the upper and lower ends of each support device respectively abut against the top plate of the air spring and the frame, so as to support the train car body in the vertical direction. After the car body rises and is supported, the bottom of the emergency spring can be jacked up and the shim of the emergency spring can be adjusted. This solution utilizes the function of the train's own air spring to adjust the height of the car body, and is equipped with support devices to raise the train car body, providing a spatial condition for the adjustment of the emergency spring shim. Moreover, the process of raising the train is simple and efficient, and instant measurement and instant adjustment can be achieved, which is beneficial to timely adjusting the shim of the emergency spring and avoiding a series of problems such as the folding awning tilting and the coupler height not meeting the requirements due to untimely adjustment of the shim. This solution does not require using an engineering vehicle to transfer the train to a dedicated car lifting lane and using large-scale dedicated car lifting equipment to raise the car body, avoiding repeated car transfer, and correspondingly reducing the scheduling of staff and manual working hours in this process, which is beneficial to saving equipment costs and labor costs. Description of the Drawings

[0023] The following further describes the technology of the present invention in detail in conjunction with the drawings and specific embodiments:

[0024] Figure 1 It is a schematic structural diagram of the present invention when the emergency spring is jacked up;

[0025] Figure 2 It is a schematic structural diagram of the present invention when the support device supports the car body;

[0026] Figure 3 It is a schematic structural diagram of the support device of the present invention;

[0027] Figure 4 It is a cross-sectional view of the support device of the present invention;

[0028] Figure 5 It is a top view of the support device of the present invention.

[0029] Reference Signs:

[0030] 1 - Support device; 11 - Support body; 12 - Support base; 13 - Through hole;

[0031] 2 - Air spring; 21 - Air spring top plate;

[0032] 3 - Jacking device;

[0033] 4 - Emergency spring;

[0034] 5 - Bogie;

[0035] 6 - Frame;

[0036] 7 - Track;

[0037] 8 - Car body. Detailed implementation manner

[0038] The following will clearly and completely describe the concept, specific structure and technical effects generated by the present invention in combination with the embodiments and the drawings, so as to fully understand the purpose, solution and effects of the present invention. It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The same reference numerals used throughout the drawings indicate the same or similar parts.

[0039] It should be noted that, unless otherwise specified, when a certain feature is referred to as "fixed" or "connected" to another feature, it can be directly fixed or connected to the other feature, or indirectly fixed or connected to the other feature. In addition, the up, down, left, right, etc. descriptions used in the present invention are only relative to the mutual positional relationship of the components of the present invention in the drawings.

[0040] Refer to Figures 1 to 3 , a method for adjusting the emergency spring gasket of a subway train, comprising the following steps:

[0041] S1. Park the train on the inspection track and adjust its pressure: Park the train that needs to adjust the gasket of the emergency spring 4 on the inspection track, and then adjust the air pressure of the train to the corresponding working air pressure of each train, so as to facilitate detecting the height difference of the train in the working state.

[0042] S2. Adjust the car body height and support the train car body: Before adjusting the height of the car body 8, measure the height on both sides of the train, and calculate the parameter range for adjusting the emergency spring 4 on both sides of the train, so as to determine whether to add or reduce the shims on both sides of the car body 8 respectively. Then remove the height valve nut, and slowly inflate the train car body 8 to raise it. During this process, two staff members monitor the inflation height at the vertical shock absorbers on both sides of the train car body 8 respectively. Until the train is raised to a suitable height, symmetrically place the special support device 1 for the car body 8 between the top plate of the air spring 2 and the frame 6 to support the train car body 8. Synchronously adjusting the height valves of the air springs 2 located on both sides of the train car body 8 can control the rise or fall of the train car body 8. First, synchronously adjust the height valve nuts of the air springs 2 on both sides of the train car body 8 to raise both sides of the train car body 8 to an appropriate height. At this time, the upper ends on both sides of the car body 8 are raised to the same height, which can be determined according to the parameter range for adjusting the emergency spring 4, and the distance between the top plate of the air spring 2 and the frame 6 on both sides of the car body 8 is greater than the height of the support device 1, so as to place a plurality of support devices 1 between the top plate of each air spring 2 and the frame 6. Among them, the frame 6 is located between two adjacent bogies 5 and is connected to a bogie 5 at both ends. After that, simultaneously adjust the height valve nuts of the air springs 2 on both sides of the train car body 8, close the air cylinder valve of the air spring 2, and then operate the height valve of the air spring 2 to exhaust the air spring 2, so that the upper and lower ends of each support device 1 are respectively in contact with the top plate of the air spring 2 and the frame 6.

[0043] Among them, the plurality of support devices are symmetrically arranged on both sides of the car body. Each support device 1 is used to support the train car body 8 in the vertical direction. Each support device 1 includes a support body 11 and a support base 12. The support base 12 is horizontally arranged. The support body 11 is perpendicular to the upper surface of the support base 12. The support body 11 is fixedly connected to the support base 12 to form an inverted T shape. When in the support state, the end of the support body 11 far from the support base 12 abuts against the top plate of the air spring 2, and the side of the support base 12 far from the support body 11 abuts against the frame 6.

[0044] Specifically, each support device 1 can preferably be a hollow structure or a solid structure. When each support device 1 is a hollow structure, each support device 1 is provided with a through hole 13 that sequentially penetrates the support body 11 and the support base 12. A stepped surface is provided at the end of the through hole 13 on the support body 11 far from the support base 12, so that the through hole 13 forms a stepped hole structure at the end of the support body 11 far from the support base 12. The setting of the through hole 13 can save the cost of the support device 1.

[0045] This solution utilizes the height adjustment function of the train's own air spring 2 for the car body 8, and is equipped with a support device 1 to lift the train car body 8, providing a spatial condition for the adjustment of the shims of the emergency spring 4. Moreover, the process of lifting the train is simple and efficient, enabling immediate measurement and adjustment, which is beneficial for timely adjusting the shims of the emergency spring 4 and avoiding a series of problems such as the folding awning tilting and the coupler height not meeting the requirements due to untimely shim adjustment. This solution does not require using an engineering vehicle to move the train to a dedicated car body lifting lane and adopting large-scale dedicated car body lifting equipment to lift the car body 8, thus avoiding repeated shunting and correspondingly reducing the dispatching of staff and manual working hours during this process, which is beneficial for saving equipment costs and labor costs.

[0046] S3. Jack up the emergency springs and adjust the shims: First, release the parking brake of the train, then remove the fixing bolts of each emergency spring 4, place each jacking device 3 at the bottom of the emergency spring 4, drive each jacking device 3 to jack up the bottom of each emergency spring 4 in the vertical direction to an appropriate height, and synchronously measure the heights on both sides of the train car body 8 respectively. Then, add or subtract shims at the bottom of each emergency spring 4 according to the parameter range for adjusting the emergency spring 4 in step S2. When it is checked that the original shims are damaged, the shims can also be replaced. When using the jacking device 3 to synchronously jack up the bottom of each emergency spring 4 at the bottom of each emergency spring 4, measure the heights on both sides of the train car body 8 respectively to prevent the train car body 8 from tilting. Among them, the sum of the height of the support body 11 and the height of the support base 12 is greater than the height to which the bottom of the emergency spring 4 is jacked up. The jacking device 3 can preferably be a jack. The jacking device 3 jacks up the bottom of the emergency spring 4 upward, facilitating the replacement or addition and subtraction of shims at the bottom of the emergency spring 4. The bottom of the jacking device 3 can be located on the plane of the track 7 or other structures.

[0047] S4. Remove each jacking device: After the operation of replacing or adding and subtracting shims is completed, remove each jacking device 3 and tighten the fixing bolts of each emergency spring 4.

[0048] S5. Remove each support device: Synchronously adjust the height valves of the air springs 2 located on both sides of the train car body 8 to raise the train car body 8. During the process of raising the train car body 8, synchronously monitor the heights on both sides of the train car body 8 to remove each support device 1. That is, adjust or install the height valve of the air spring 2, slowly inflate the train to make it rise, and two staff members respectively monitor the height of the car body 8 during the inflation process at the vertical shock absorbers on both sides of the car body 8 until the car body 8 is separated from the upper end of the support device 1 and the support device 1 no longer bears the weight of the car body 8. At this time, each support device 1 can be removed.

[0049] S6. Measuring the carbody parameters: First, synchronously adjust the height valves of the air springs 2 on both sides of the train carbody 8 to lower the train carbody 8 to an appropriate height, and then measure the parameters of the carbody 8. After the measurement of the carbody 8 parameters is qualified, the adjustment of the shims of the emergency spring 4 of the train can be completed.

[0050] For other contents of the method for adjusting the emergency spring shims of the subway train according to the present invention, reference can be made to the prior art and will not be elaborated herein.

[0051] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Therefore, any modifications, equivalent changes, and decorations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A method for adjusting an emergency spring gasket of a subway train, characterized in that: Including the following steps: S1. Park the train on the maintenance track and adjust its pressure: Park the train that needs to adjust the emergency spring gasket on the maintenance track, and then adjust the air pressure of the train to the working air pressure; S2. Adjust the height of the car body and support the train car body: Synchronously adjust the height valves of the air springs on both sides of the train car body to raise or lower the train car body, so as to place a number of support devices between the top plates of the air springs and the frame, and make the upper and lower ends of each support device respectively abut against the top plate of the air spring and the frame. Each support device is used to support the train car body in the vertical direction; S3. Lift the emergency spring and adjust the gasket: Close the air spring cylinder valve, then operate the height valve to exhaust the air spring, place each lifting device at the bottom of the emergency spring, drive each lifting device to lift the bottom of each emergency spring to an appropriate height in the vertical direction, and then replace or add or subtract gaskets at the bottom of each emergency spring; S4. Remove each lifting device; S5. Remove each support device: Synchronously adjust the height valves of the air springs on both sides of the train car body to raise the train car body, so as to remove each support device; S6. Measure the car body parameters: Open the air spring cylinder valve, synchronously adjust the height valves of the air springs on both sides of the train car body to lower the train car body to an appropriate height, and then measure the car body parameters. After the car body parameters are measured to be qualified, the adjustment of the emergency spring gasket of the train can be completed.

2. The adjustment method of the emergency spring gasket of the subway train according to claim 1, characterized in that: Before performing step S2, first measure the height on both sides of the train and calculate the parameter range for adjusting the emergency spring on both sides of the train.

3. The adjustment method of the emergency spring gasket for the subway train according to claim 1, characterized in that: In step S2, the number of support devices is symmetrically arranged on both sides of the car body.

4. The adjustment method of the emergency spring gasket of the subway train according to claim 3, characterized in that: In step S2, first synchronously adjust the height valve nuts of the air springs on both sides of the train car body to raise the train car body to an appropriate height, so that the distance between the top plate of the air spring and the frame is greater than the height of the support device. At this time, each support device can be placed between the top plate of the air spring and the frame, and then synchronously adjust the height valve nuts of the air springs on both sides of the train car body, so that the train car body descends until the upper and lower ends of each support device respectively abut against the top plate of the air spring and the frame.

5. The adjustment method of the emergency spring gasket for subway trains according to claim 1, characterized in that: In step S3, before placing the lifting device at the bottom of each emergency spring, first relieve the parking brake of the train.

6. The adjustment method of the emergency spring gasket for a subway train according to claim 5, characterized in that: In step S3, when using the lifting device to synchronously lift each emergency spring at the bottom of each emergency spring, respectively synchronously measure the height on both sides of the train car body.

7. The adjustment method of the emergency spring gasket for subway trains according to claim 1, characterized in that: In step S4, after the operation of replacing or adding or subtracting gaskets is completed, remove each lifting device and tighten the fixing bolts of each emergency spring.

8. The adjustment method of the emergency spring gasket of the subway train according to claim 1, characterized in that: In step S5, during the process of raising the train car body, synchronously monitor the height on both sides of the train.

9. The adjustment method of the emergency spring gasket of the subway train according to claim 1, characterized in that: Each support device includes a support body and a support base. The support base is horizontally arranged, the support body is perpendicular to the upper surface of the support base, and the support body is fixedly connected to the support base to form an inverted T shape.

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