A single vehicle pressure maintaining method for a vehicle with a blocked spring hole

Abstract

The present invention discloses a single-vehicle pressure-maintaining method with a blocked empty spring hole of a vehicle, which solves the problem in the prior art that a process bogie with a blocked empty spring hole cannot be subjected to a pressure-maintaining test, and has the beneficial effect of being able to conduct a pressure-maintaining test on a single vehicle with a blocked empty spring hole. The specific scheme is as follows: A single-vehicle pressure-maintaining method with a blocked empty spring hole of a vehicle comprises cleaning and pressure-maintaining a main air duct, a brake duct and a parking duct of a rail transit vehicle; lifting the rail transit vehicle to a platform, moving a supporting device to the bottom of the rail transit vehicle, adjusting the height of the supporting device, and supporting the bottom of the process bogie along the width direction of the rail transit vehicle with the top of the supporting device; sealing an empty spring air intake seat, dividing the main air duct, the brake duct and the parking duct into two sections respectively, one of which passes through the process bogie to form an empty spring duct passing through the empty spring hole, and cleaning and pressure-maintaining the empty spring duct; releasing the seal of the empty spring air intake seat.

Description

Technical Field

[0001] The invention relates to the field of rail transit vehicle pressure maintenance test, in particular to a single vehicle pressure maintenance method with a vehicle empty spring hole blocked. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] In the field of rail transit, pipeline pressure test is crucial to pipeline safety. It is used in the vehicle pressure-maintaining process to ensure the normal air tightness of the vehicle pipeline and to ensure that the pipeline system will not have safety accidents such as rupture or leakage under normal working pressure. There are currently two different types of bogies, one is the process bogie whose vehicle spring hole is not blocked, and the other is the process bogie whose vehicle spring hole is blocked. For the process bogie whose vehicle spring hole is blocked, since the vehicle spring hole is connected to the air cylinder, there may be leakage at the blocked vehicle spring hole. Although the pressure test can be carried out, the test results are not accurate enough, which affects the measurement accuracy of the rail transit vehicle pressure test, affects the production plan, and makes production impossible. Summary of the invention

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a single-vehicle pressure-maintaining method with a blocked empty spring hole of the vehicle, so as to support the process bogie when maintaining the pressure of the rail transit vehicle.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A single vehicle pressure maintaining method with a blocked spring hole, comprising the following contents:

[0007] For rail transit vehicles with blocked empty spring holes at the process bogie, the main air duct, brake duct and parking duct are cleaned and pressure maintained;

[0008] Lift the rail transit vehicle to the platform, replace the process bogie with a vehicle bogie, move the support device to the bottom of the rail transit vehicle, adjust the height of the support device along the width direction of the rail transit vehicle so that the top of the support device supports the bottom of the vehicle bogie;

[0009] The air spring air intake seat of the sealed vehicle bogie is divided into two sections, one of which passes through the process bogie to form an air spring pipeline passing through the air spring hole, and the air spring pipeline is cleaned and pressure maintained;

[0010] Release the seal of the air spring air intake seat of the vehicle bogie, and finally clean the main air duct, brake duct and parking duct again.

[0011] In the single-vehicle pressure-maintaining method with blocked empty spring holes as described above, considering that the vehicle bogie has undergone a sealing test, only the empty spring air intake seat of the vehicle bogie is sealed, so that the main air duct, brake duct and parking duct are respectively formed into two sections, and the front section of the main air duct, brake duct and parking duct after passing through the process bogie is the empty spring duct.

[0012] In the single-vehicle pressure-maintaining method with a blocked spring hole as described above, before cleaning the main air duct, brake duct and parking duct, the main air duct, brake duct and parking duct are sealed respectively to ensure smooth cleaning and pressure-maintaining work.

[0013] The above-mentioned method for maintaining pressure of a single vehicle with a blocked spring hole, wherein the main air duct, brake duct and parking duct are cleaned and pressure maintained, includes the following contents:

[0014] Connect the air inlet of the pipeline automatic cleaning and pressure-maintaining test bench to the air source;

[0015] Connect the air outlet of the pipeline automatic cleaning and pressure-maintaining test bench to the main air pipeline, brake pipeline and parking pipeline at one end of the rail transit vehicle respectively;

[0016] Turn on the automatic pipeline cleaning and pressure maintenance test bench to clean and maintain the pressure of the main air pipeline, brake pipeline and parking pipeline by supplying air.

[0017] The above-mentioned method for maintaining pressure on a single vehicle with a blocked empty spring hole, wherein the empty spring pipeline is cleaned and pressure maintained, comprises the following contents:

[0018] Connect the air inlet of the pipeline automatic cleaning and pressure-maintaining test bench to the air source;

[0019] Connect the air outlet of the pipeline automatic cleaning and pressure-maintaining test bench to the main air pipeline, brake pipeline and parking pipeline at one end of the rail transit vehicle respectively;

[0020] Turn on the pipeline automatic cleaning and pressure maintenance test bench to clean and maintain the pressure of the air spring pipeline by supplying air.

[0021] As described above, a single-vehicle pressure-maintaining method for a vehicle with a blocked empty spring hole, the support device includes a bracket, the bracket is provided with a moving mechanism, vertical support columns are respectively provided on both sides of the upper surface of the bracket, the support column includes multiple connecting sections so that the height of the support column is adjustable, after the support column is raised, the two adjacent connecting sections are fastened and connected by fasteners, the connecting section located at the bottom of the support column is fixed to the bracket, and the upper connecting section of the two adjacent connecting sections can be flipped relative to the lower connecting section, and the upper connecting section can be flipped relative to the lower connecting section.

[0022] According to the above-mentioned method for maintaining pressure on a single vehicle with a blocked spring hole, two adjacent connecting sections are connected by a hinge structure;

[0023] To ensure the installation of the fastener, a mounting plate is arranged at one end of the connecting section that is connected to another connecting section, and the fastener is arranged through the mounting plate.

[0024] According to the above-mentioned method for maintaining pressure on a single vehicle with a blocked spring hole, the support column comprises a plurality of connecting sections which are sleeved in sequence, the connecting section is a hollow sleeve, and the fastener fastens the connecting section from the circumferential direction of the connecting section;

[0025] A flexible pad is fixed on the top of the support column to avoid damage to the process bogie;

[0026] The distance between the two support columns on the upper surface of the bracket is smaller than the width of the rail transit vehicle.

[0027] According to the above-mentioned method for maintaining pressure on a single vehicle with a blocked empty spring hole, the bracket includes an H-shaped support beam, the H-shaped support beam includes an intermediate beam, two first beams are respectively arranged on opposite sides of the intermediate beam, the first beams are vertically connected to the intermediate beam, and the moving mechanism is installed through the two first beams on one side of the intermediate beam;

[0028] A second beam is connected between the two first beams on the side of the middle beam. The second beam is located on both sides of the middle beam, and a distance is set between the second beam and the middle beam.

[0029] According to the above-mentioned method for maintaining pressure on a single vehicle with a blocked spring hole, the support column is installed on the middle beam, and the length of the middle beam is greater than the distance between the two first beams on one side of the middle beam;

[0030] The moving mechanism is a wheel set structure, the wheels of the wheel set structure can move along the track on the ground, and the moving mechanism is installed between the second beam and the middle beam.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1) The present invention supports the process bogie of the rail transit vehicle by means of a supporting device to ensure the smooth progress of the pressure holding test. The entire pressure holding test is carried out twice. One time is when the process bogie is set up, and the main air duct, brake duct and parking duct are cleaned and pressure-maintained. The other time is after the process bogie is replaced with a vehicle bogie with higher precision. Although the precision is higher, considering the pressure holding effect, the whole is divided into two sections, and the empty spring duct passing through the empty spring hole is cleaned and pressure-maintained. The two pressure holding tests can effectively determine the air tightness of each duct, thereby ensuring the overall air tightness, saving manpower, material resources and working hours; the empty spring duct is pressure-maintained separately, the production efficiency is improved, the duct air tightness is ensured, and the operation risk is avoided.

[0033] 2) The support device in the present invention has a reasonable structural arrangement. The bracket in the support device supports the support column. The support column includes multiple sections. Two adjacent connecting sections can be flipped, so that the height of the support device is relatively low under normal conditions. When it is necessary to support the vehicle, the connecting section is flipped to increase the height of the support column, and the two adjacent connecting sections are connected by fasteners to ensure the height of the support column. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0035] Figure 1 It is a schematic diagram of a single-vehicle pressure-maintaining method with a blocked empty spring hole of the vehicle according to one or more embodiments of the present invention.

[0036] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0037] Among them: 1. The upper connecting section, 2. The articulated shaft, 3. The lower connecting section, 4. The stiffening ribs, 5. The middle beam, 6. The wheelset, 7. The second beam, 8. The first beam, 9. The mounting plate. DETAILED DESCRIPTION

[0038] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0039] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0040] As introduced in the background technology, the prior art has the problem that a pressure holding test cannot be performed on a process bogie with a blocked empty spring hole. In order to solve the above technical problem, the present invention proposes a single-vehicle pressure holding method with a blocked empty spring hole.

[0041] Embodiment 1

[0042] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a single vehicle pressure maintaining method with a blocked spring hole of the vehicle comprises the following contents:

[0043] For rail transit vehicles with blocked empty spring holes at the process bogie, the main air duct, brake duct and parking duct are cleaned and pressure maintained;

[0044] Lift the rail transit vehicle to the platform (referring to the platform supporting the rail transit vehicle), replace the process bogie with a vehicle bogie, move the support device to the bottom of the rail transit vehicle, adjust the height of the support device along the width direction of the rail transit vehicle, so that the top of the support device supports the bottom of the vehicle bogie;

[0045] The air spring air intake seat of the sealed vehicle bogie is divided into two sections, one of which passes through the process bogie to form an air spring pipeline passing through the air spring hole, and the air spring pipeline is cleaned and pressure maintained;

[0046] Remove the seal of the air spring air intake seat of the vehicle bogie, and finally clean the main air pipeline, brake pipeline, and parking pipeline again

[0047] It should be noted that the air spring air intake seat is an air spring air intake port.

[0048] In the present embodiment, the air spring air intake seat can be sealed by a sealing cover, a rubber plug or a process bolt. The rubber plug can be T-shaped to facilitate subsequent removal, and the rubber plug has good sealing performance. The process bolt structure is the same as the bolt structure, and the head of the process bolt is also covered with a rubber ring to ensure effective sealing of the air spring air intake seat, so that the main air duct, brake duct and parking duct are respectively formed into two sections, and the main air duct, brake duct and parking duct pass through the front section of the process bogie, which is the air spring duct.

[0049] Among them, the function of the main air duct of the rail transit vehicle is to supply air to the brake duct and the parking duct, and the brake duct and the parking duct are arranged in parallel.

[0050] It is easy to understand that before cleaning the main air duct, brake duct and parking duct, the main air duct, brake duct and parking duct are sealed respectively. Specifically, they can be sealed by process bolts or rubber plugs. The rubber plug is adapted to the aperture of the corresponding sealing hole to ensure the smooth progress of cleaning and pressure maintenance.

[0051] It should be noted that cleaning and pressure maintenance of the main air pipeline, brake pipeline and parking pipeline include the following:

[0052] Connect the air inlet of the pipeline automatic cleaning and pressure-maintaining test bench to the air source;

[0053] Connect the air outlet of the pipeline automatic cleaning and pressure-maintaining test bench to the main air pipeline, brake pipeline and parking pipeline at one end of the rail transit vehicle respectively;

[0054] Turn on the automatic pipeline cleaning and pressure maintenance test bench to clean and maintain the pressure of the main air pipeline, brake pipeline and parking pipeline by supplying air.

[0055] Among them, the cleaning and pressure maintenance of the air spring pipeline includes the following contents:

[0056] Connect the air inlet of the pipeline automatic cleaning and pressure-maintaining test bench to the air source;

[0057] Connect the air outlet of the pipeline automatic cleaning and pressure-maintaining test bench to the main air pipeline, brake pipeline and parking pipeline at one end of the rail transit vehicle respectively;

[0058] Turn on the pipeline automatic cleaning and pressure maintenance test bench to clean and maintain the pressure of the air spring pipeline by supplying air.

[0059] Among them, it needs to be explained that the pipeline automatic cleaning and pressure maintaining test bench is an existing pipeline automatic cleaning test bench, which is an existing device and can be connected to the main air pipeline, brake pipeline and parking pipeline respectively; the air source can be an air compressor, and the air compressor can be connected to the pipeline automatic cleaning and pressure maintaining test bench.

[0060] refer to Figure 1 As shown, the support device includes a bracket, the bracket is provided with a moving mechanism, vertical support columns are respectively provided on both sides of the upper surface of the bracket, the two support columns are set at a distance, the two support columns are parallel to each other, the support column includes multiple connecting sections so that the height of the support column can be adjusted, and specifically may include two connecting sections. After the support column is raised, the two adjacent connecting sections are fastened and connected by fasteners, and the connecting section located at the bottom of the support column is fixed to the bracket. The upper connecting section 1 of the two adjacent connecting sections can be flipped relative to the lower connecting section 3, and the upper connecting section 1 can be flipped relative to the lower connecting section 3.

[0061] Specifically, the sizes of the upper connecting segment 1 and the lower connecting segment 3 are the same, so that the bottom connecting segment is a fixed connecting segment, and the top connecting segment is a flippable connecting segment. The flippable connecting segment is normally located on the side of the lower connecting segment 3, and after flipping, it can be placed on the top of the lower connecting segment, and the two adjacent connecting segments are connected by a hinge structure.

[0062] To ensure the setting of the fasteners, a mounting plate 9 is set at one end of the connecting section that is connected to another connecting section. The hinge includes a hinge shaft 2, and the two sides of the hinge shaft 2 are respectively installed through the mounting plates of the two adjacent connecting sections. The mounting plate 9 is a rectangular or square mounting plate. The side length of the mounting plate 9 is greater than the side length of the connecting section, that is, the mounting plate 9 protrudes from the connecting section, and an opening is set on the part of the mounting plate protruding from the connecting section. Fasteners such as bolts are set through the two mounting plates of the two adjacent connecting sections and are locked with nuts.

[0063] It is easy to understand that a flexible pad is fixed on the top of the support column to avoid damage to the process bogie;

[0064] The distance between the two support columns on the upper surface of the bracket is smaller than the width of the rail transit vehicle, and a reinforcing rib 4 is arranged between the bottom side of the support column and the bracket, and the reinforcing rib 4 is located on each side of the support column.

[0065] In addition, the bracket includes an H-shaped support beam, the H-shaped support beam includes an intermediate beam 5, two first beams 8 are respectively arranged on opposite sides of the intermediate beam 5, the first beams 8 on both sides of the intermediate beam 5 are symmetrically arranged about the length direction of the intermediate beam, the first beams 8 are vertically connected to the intermediate beam 5, and the moving mechanism is installed through the two first beams 8 on one side of the intermediate beam;

[0066] A second beam 7 is connected between the two first beams on the side of the middle beam 5. The second beam 7 is vertically connected to the first beam 8. The width of the second beam 7 is smaller than the width of the middle beam. The length of the second beam 7 is smaller than the length of the middle beam 5. The second beam 7 is located on both sides of the middle beam 5, and the second beam 7 is spaced apart from the middle beam 5.

[0067] In this embodiment, in order to prevent the overall size of the bracket from being too large, the support column is installed on the middle beam 5, and the length of the middle beam 5 is greater than the distance between the two first beams 8 on one side of the middle beam 5;

[0068] It is easy to understand that the moving mechanism is a wheel set structure, the wheel set 6 of the wheel set structure can move along the track on the ground, and the moving mechanism is installed between the second beam 5 and the middle beam 5. Specifically, the moving mechanism is installed through the first beam 8.

[0069] In addition, in some examples, a hook is provided on the side of the lower connecting section, and the box body can be hung on the hook. The top or side of the box body is open and can be used to set components such as rubber plugs, which is convenient for use when the air spring intake seat needs to be sealed.

[0070] In this embodiment, the support device supports the rail transit vehicle process bogie through the provision of the entire method to ensure the smooth progress of the pressure holding test. The entire pressure holding test is carried out twice, one is to clean and hold the pressure of the main air duct, brake duct and parking duct, and the other is to divide the whole into two sections, clean and hold the pressure of the empty spring duct passing through the empty spring hole. The second pressure holding test involves the blocking of the empty spring air intake seat. After the test is completed, it is necessary to release the seal of the empty spring air intake seat. The second pressure holding test is carried out on the stand. The two pressure holding tests can effectively determine the air tightness of each duct, thereby ensuring the overall air tightness, saving manpower and material resources, effectively shortening working hours and improving efficiency.

[0071] Embodiment 2

[0072] The difference between this embodiment and the first embodiment is that:

[0073] The support column includes a plurality of connecting sections which are sleeved in sequence, wherein the connecting section is a hollow sleeve, and fasteners such as fastening bolts are used to fasten the connecting section from the circumferential direction of the connecting section.

[0074] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for maintaining pressure on a single vehicle when a spring hole of the vehicle is blocked, characterized in that: It includes the following: For rail transit vehicles with blocked empty spring holes at the process bogie, the main air duct, brake duct and parking duct are cleaned and pressure maintained; Lift the rail transit vehicle to the platform, replace the process bogie with a vehicle bogie, move the support device to the bottom of the rail transit vehicle, adjust the height of the support device along the width direction of the rail transit vehicle so that the top of the support device supports the bottom of the vehicle bogie; The air spring air intake seat of the sealed vehicle bogie is divided into two sections, one of which passes through the process bogie to form an air spring pipeline passing through the air spring hole, and the air spring pipeline is cleaned and pressure maintained; Release the seal of the air spring air intake seat of the vehicle bogie, and finally clean the main air duct, brake duct and parking duct again.

2. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 1, characterized in that: The air spring air inlet seat of the vehicle bogie is blocked so that the main air duct, brake duct and parking duct are respectively formed into two sections, and the front section of the main air duct, brake duct and parking duct passing through the process bogie is the air spring duct.

3. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 1, characterized in that: Before cleaning the main air duct, the brake duct and the parking duct, the main air duct, the brake duct and the parking duct are sealed respectively.

4. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 1, characterized in that: The cleaning and pressure maintenance of the main air pipeline, brake pipeline and parking pipeline include the following contents: Connect the air inlet of the pipeline automatic cleaning and pressure-maintaining test bench to the air source; Connect the air outlet of the pipeline automatic cleaning and pressure-maintaining test bench to the main air pipeline, brake pipeline and parking pipeline at one end of the rail transit vehicle respectively; Turn on the automatic pipeline cleaning and pressure maintenance test bench to clean and maintain the pressure of the main air pipeline, brake pipeline and parking pipeline by supplying air.

5. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 1, characterized in that: The cleaning and pressure maintenance of the air spring pipeline includes the following contents: Connect the air inlet of the pipeline automatic cleaning and pressure-maintaining test bench to the air source; Connect the air outlet of the pipeline automatic cleaning and pressure-maintaining test bench to the main air pipeline, brake pipeline and parking pipeline at one end of the rail transit vehicle respectively; Turn on the pipeline automatic cleaning and pressure maintenance test bench to clean and maintain the pressure of the air spring pipeline by supplying air.

6. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 1, characterized in that: The support device includes a bracket, the bracket is provided with a moving mechanism, vertical support columns are respectively provided on both sides of the upper surface of the bracket, the support column includes multiple connecting sections so that the height of the support column can be adjusted, after the support column is raised, two adjacent connecting sections are fastened and connected by fasteners, the connecting section located at the bottom of the support column is fixed to the bracket, and the upper connecting section of the two adjacent connecting sections can be flipped relative to the lower connecting section.

7. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 6, characterized in that: Two adjacent connecting sections are connected by a hinge structure; A mounting plate is arranged at one end of the connecting section which is connected to another connecting section, and the fastener is arranged through the mounting plate.

8. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 6, characterized in that: The support column comprises a plurality of connecting sections which are sleeved in sequence, the connecting section being a hollow sleeve, and the fastener fastens the connecting section from the circumferential direction of the connecting section; A flexible pad is fixed on the top of the support column; The distance between the two support columns on the upper surface of the bracket is smaller than the width of the rail transit vehicle.

9. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 6, characterized in that: The bracket includes an H-shaped support beam, the H-shaped support beam includes an intermediate beam, two first beams are respectively arranged on opposite sides of the intermediate beam, the first beams are vertically connected to the intermediate beam, and the moving mechanism is installed through the two first beams on one side of the intermediate beam; A second beam is connected between the two first beams on the side of the middle beam. The second beam is located on both sides of the middle beam, and a distance is set between the second beam and the middle beam.

10. A method for maintaining pressure on a single vehicle with a blocked spring hole according to claim 9, characterized in that: The support column is installed on the middle beam, and the length of the middle beam is greater than the distance between the two first beams on one side of the middle beam; The moving mechanism is a wheel set structure, the wheels of the wheel set structure can move along the track on the ground, and the moving mechanism is installed between the second beam and the middle beam.

Images