Metro vehicle unbalance simulation platform for altitude valve failure test

Abstract

The invention relates to the technical field of subway altitude valve application, and aims to solve the technical problem of equipment capable of simulating a real working environment of a subway vehicle. In order to solve the technical problem, the invention provides the metro vehicle unbalance simulation platform for the altitude valve failure test. The device comprises a gas source and an unbalance simulation mechanism. The unbalance simulation mechanism comprises an air source and an unbalance simulation mechanism. The lower platform of the unbalance simulation mechanism is horizontally arranged; the upper platform is arranged above the lower platform; the four adjusting assemblies are located at the four corners of the unbalance simulation mechanism correspondingly. An air spring of the adjusting assembly is arranged between the lower platform and the upper platform and used for adjusting the distance between the upper platform and the lower platform. The height valve to be measured is connected with the upper platform and the air source; the lifting parts and the adjusting assemblies are arranged in one-to-one correspondence; the lifting component is connected with the lower platform and the upper platform and used for simulating unbalance. Whether the working state of the altitude valve meets the requirement or not can be quickly and accurately evaluated.

Description

Technical Field

[0001] The invention relates to the technical field of subway height valve application, and in particular to a subway vehicle imbalance simulation platform for height valve failure testing. Background Art

[0002] In the air spring suspension, the height valve is an actuator used to control the internal pressure of the air spring. The height valve is fixed on the frame, and its inlet and outlet are connected to the air reservoir and the air spring respectively. When the load on the air spring increases, the spring is compressed, and the gas in the air reservoir is injected into the airbag through the air inlet of the height valve. The internal pressure of the airbag increases, and the air spring rises until it returns to its original position and the air inlet is closed; when the load on the air spring decreases, the spring stretches, and the gas is discharged through the exhaust port of the height valve until the air spring drops to its original position and the exhaust port is closed. Therefore, under the action of the height valve, the height of the air spring can be kept fluctuating near the equilibrium position, thereby ensuring that the vehicle body does not change with changes in load.

[0003] As the core component of the subway air suspension device, the height valve is crucial to the stability and safety of the subway vehicle, so it is necessary to regularly test the height valve. There is no equipment in the prior art that can simulate the real working environment of the subway vehicle, so it is necessary to design a device that can simulate the real working environment of the subway vehicle to test and verify the height valve. Summary of the invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the above-mentioned problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention provides a subway vehicle imbalance simulation platform for height valve failure test, including: an air source and an imbalance simulation mechanism; the imbalance simulation mechanism includes: Gas source and imbalance simulation mechanism; the imbalance simulation mechanism includes: Lower platform, horizontal setting; The upper platform is arranged above the lower platform; Four adjustment components are respectively located at the four corners of the unbalanced simulation mechanism; the adjustment components include a gas spring; the gas spring is arranged between the lower platform and the upper platform, and is used to adjust the distance between the upper platform and the lower platform; the height valve to be measured is connected to the upper platform; the height valve to be measured is connected to the air source, and is used to control the air intake and exhaust of the gas spring to adjust the height of the upper platform at the corresponding position; Four lifting components are arranged corresponding to the adjustment components one by one; the lifting components are connected with the lower platform and the upper platform to simulate imbalance.

[0006] In one embodiment of the present invention, the unbalance simulation mechanism further includes four measuring components, which are arranged in one-to-one correspondence with the adjustment components; the measuring components are used to measure the height of the upper platform at the corresponding position in the unbalanced state.

[0007] In one embodiment of the present invention, the measuring assembly includes a scale and a pointer; the scale is vertically arranged and connected to the outer side wall of the lower platform; the pointer is arranged on the upper platform; the pointer matches the scale and is used to indicate the scale of the scale.

[0008] In one embodiment of the present invention, the unbalance simulation mechanism is divided into two groups of unbalance simulation mechanisms, and the two groups of unbalance simulation mechanisms are arranged side by side front and back; the upper platforms of the two groups of unbalance simulation mechanisms are connected by an upper connecting part, and the lower platforms of the two groups of unbalance simulation mechanisms are connected by a lower connecting part; two gas springs are arranged between the upper platform and the lower platform of an unbalance simulation mechanism.

[0009] In one embodiment of the present invention, the height valve to be measured is connected to the gas source through a pipeline; the height valve to be measured is connected to the gas spring through a pipeline.

[0010] In one embodiment of the present invention, the adjustment assembly further comprises a vertically arranged connecting member which is retractable along its axial direction; one end of the connecting member is connected to the lower platform and the other end is connected to one end of the balance rod of the height valve to be measured.

[0011] In one embodiment of the present invention, the lifting component includes a cylinder, the cylinder is connected to the lower platform, and the telescopic end of the cylinder is connected to the upper platform.

[0012] In one embodiment of the present invention, the imbalance simulation mechanism further includes a pressure gauge for detecting the pressure of the gas spring.

[0013] In one embodiment of the present invention, the imbalance simulation mechanism further includes a pressure regulating valve for adjusting the pressure of the gas spring.

[0014] In one embodiment of the present invention, the unbalance simulation mechanism further includes a moving component disposed at the bottom of the lower platform, for realizing the movement of the subway vehicle unbalance simulation platform for height valve failure testing.

[0015] The above technical solution of the present invention has the following advantages compared with the prior art: The subway vehicle imbalance simulation platform for height valve failure testing described in the present invention simulates the situation where the four corners of the four subway vehicles are subjected to different loads (different cars carrying different numbers of passengers) through four lifting components (i.e., simulating different imbalance states), and then adjusts the air intake and exhaust of the gas spring through the height valve, and monitors the time for the upper platform to return to the horizontal under the action of the height valve, so as to timely test the performance of the height valve, and discover potential problems of the height valve, and avoid safety accidents caused by height valve failure. It can be seen that the present application can quickly and accurately evaluate whether the working state of the height valve meets the requirements and ensure that it meets safety standards by simulating the real working environment of the subway vehicle (various imbalance states). By regularly testing the height valve on the present application, problems with the height valve can be discovered and solved in a timely manner, and major failures caused by minor problems can be avoided, thereby reducing the overall maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below according to specific embodiments of the present invention in conjunction with the accompanying drawings, wherein: Figure 1 It is a three-dimensional schematic diagram of a subway vehicle imbalance simulation platform for height valve failure testing in a preferred embodiment of the present invention; Figure 2 yes Figure 1 A side view of a subway vehicle imbalance simulation platform for height valve failure testing; Description of the accompanying drawings: 100, gas source; 200, lower platform; 210, lower connecting part; 300, upper platform; 310, upper connecting part; 400, regulating assembly; 410, gas spring; 420, connecting piece; 430, pressure gauge; 440, pressure regulating valve; 500, lifting parts; 600, height valve to be measured; 700, measuring component; 710, scale; 720, pointer; 800, mobile components; 900. Support member. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0018] Reference Figure 1~Figure 2As shown, an embodiment of the present invention provides a subway vehicle imbalance simulation platform for height valve failure test, including an air source 100 and an imbalance simulation mechanism. The air source 100 can be an air compressor. The air source 100 is arranged on one side of the imbalance simulation mechanism. The imbalance simulation mechanism includes a lower platform 200, an upper platform 300, four adjustment components 400 and four lifting components 500.

[0019] The lower platform 200 is arranged horizontally. The lower platform 200 uses a plurality of transverse square steels and vertical square steels to form a frame structure, and then a fixed plate is set on the frame structure to form the lower platform 200. For example, welding can be used to connect the transverse square steels, the transverse square steels and the vertical square steels, and the frame and the plate. Of course, bolt connection or clamping connection can also be used. The lower platform 200 simulates the chassis of the vehicle.

[0020] The upper platform 300 is disposed above the lower platform 200. The upper platform 300 simulates a compartment of a vehicle.

[0021] Four adjustment components 400 are respectively arranged at the four corners of the unbalanced simulation mechanism. The adjustment component 400 includes a gas spring 410; the gas spring 410 is connected between the lower platform 200 and the upper platform 300, and the gas spring 410 is used to adjust the distance between the upper platform 300 and the lower platform 200. The height valve 600 to be measured is connected to the upper platform 300, and is used to identify the height of the corresponding positions in the four corners of the upper platform 300. The height valve 600 to be measured is connected to the air source 100, and the height valve 600 to be measured is used to control the air intake and exhaust of the gas spring 410 to adjust the height of the corresponding positions in the four corners of the upper platform 300, so that the upper platform 300 returns to the level.

[0022] The lifting components 500 are arranged in one-to-one correspondence with the adjustment components 400; the lifting components 500 are connected to the lower platform 200 and the upper platform 300, and the lifting heights of the lifting components 500 at four positions are different to simulate different imbalance states.

[0023] Specifically, this embodiment uses four lifting components 500 to respectively simulate the situation where the four corners of the four subway vehicles are subjected to different loads (different cars are carrying different numbers of passengers) (i.e., simulating different imbalance states), and then adjusts the air intake and exhaust of the gas spring 410 through the height valve, and monitors the time it takes for the upper platform 300 to return to the horizontal under the action of the height valve, so that the performance of the height valve can be tested in time, and potential problems of the height valve can be discovered, thereby avoiding safety accidents caused by height valve failure. It can be seen that the present application simulates the real working environment of the subway vehicle (various imbalance states, for example: simulating the unbalanced tilt of the vehicle when it is loaded on one side or when it turns, etc.), so as to quickly and accurately evaluate whether the working state of the height valve meets the requirements and ensure that it meets safety standards. By regularly testing the height valve on the present application, problems with the height valve can be discovered and solved in time, avoiding major failures caused by minor problems, thereby reducing the overall maintenance cost.

[0024] Furthermore, the unbalance simulation mechanism further includes four measuring components 700, and the measuring components 700 are arranged one by one corresponding to the adjusting components 400. The measuring components 700 are used to measure the height of the upper platform 300 at the corresponding position in the unbalanced state, that is, the unbalanced height of the upper platform 300 moving downward or upward at the corresponding position can be detected by the measuring components 700, thereby simulating different unbalanced states.

[0025] Specifically, this embodiment can monitor the unbalanced height of the upper platform 300 when it is unbalanced through the measuring component 700, and can cooperate with the timing device to identify how long it takes for the upper platform 300 to return to the initial height. And the four measuring components 700 monitor the four unbalanced positions respectively. Ensure the consistency of the test, improve the test efficiency, and ensure the accuracy of the test results.

[0026] Further, the measuring assembly 700 includes a scale 710 and a pointer 720; the scale 710 is vertically arranged and connected to the outer side wall of the lower platform 200. The pointer 720 is arranged on the upper platform 300. The pointer 720 matches the scale 710 and is used to indicate the scale of the scale 710. In some possible implementations, the scale 710 is arranged at a position close to the edge of the corner of the lower platform 200, so that the tester can view the scale, and the bottom of the scale 710 is fixed to the scale 710 by bolts or other connection methods. The top of the scale 710 is provided with scales. A part of the corner of the upper platform 300 is cut to avoid the scale 710. The pointer 720 is connected and fixed at a position corresponding to the scale 710 on the upper platform 300 by bolts or other connection methods. The free end of the pointer 720 is provided with a tip, and the tip indicates the side of the scale 710 with the scale, so that the operator can quickly identify the scale.

[0027] Specifically, this embodiment monitors the height of the lower platform 200 by using a scale 710 fixed on the lower platform 200 and a pointer 720 connected to the upper platform 300, which is convenient for monitoring, simple in structure, and easy to operate.

[0028] Further, the unbalanced simulation mechanism is divided into two groups of unbalanced simulation mechanisms, and the two groups of unbalanced simulation mechanisms are arranged side by side in front and back. The upper platforms 300 of the two groups of unbalanced simulation mechanisms are connected through the upper connecting part 310. For example, the upper platforms 300 of the two groups of unbalanced simulation mechanisms are respectively connected to the upper connecting part 310 by bolts. For another example, the upper platforms 300 of the two groups of unbalanced simulation mechanisms are respectively connected to the upper connecting part 310 by welding or clamping. In some embodiments, the upper connecting part 310 is an L-shaped structure, one side of the upper connecting part 310 is connected to the upper surface of the upper platform 300, and the other side of the upper connecting part 310 is connected to the outer side of the upper platform 300, so as to ensure the stability of the connection of the upper platforms 300 of the two groups of unbalanced simulation mechanisms.

[0029] The lower platforms 200 of the two sets of unbalanced simulation mechanisms are connected by lower connecting parts 210, and the two lower connecting parts 210 are connected by bolts or other connecting methods. In some embodiments, the lower connecting parts 210 are connected to the outer side of the lower connecting parts 210 for easy installation and disassembly. Two gas springs 410 are arranged between the upper platform 300 and the lower platform 200 of each unbalanced simulation mechanism.

[0030] Specifically, this embodiment can simulate the imbalance of different vehicle models and has a wider range of applications.

[0031] Further, the height valve (height valve to be measured 600) includes a valve body, a valve core and a balance rod; the valve body is connected to the upper platform 300, and the valve body is provided with an air inlet, an exhaust port and an opening; the air inlet of the height valve to be measured 600 is connected to the gas source 100 through a pipeline, and in some embodiments, the pipeline is a hose. The exhaust port is connected to the outside through a pipeline. The opening of the height valve to be measured 600 is connected to the gas spring 410 through a pipeline; in some embodiments, the pipeline is a hose. The valve core is arranged in the valve body, and is used to switch the opening to be connected to the air inlet or the exhaust port; one end of the balance rod is hinged to the valve body, and the other end is connected to the connector 420.

[0032] Specifically, when the simulation is in a certain unbalanced state, if the gas spring 410 is in a low position at this time, the end of the balance bar connected to the lower platform 200 will tilt downward, and the balance bar tilting downward will make the valve core control opening communicate with the air inlet, so as to inflate the gas spring 410, so that the upper platform 300 is adjusted to a horizontal state; if the gas spring 410 is in a high position at this time, the end of the balance bar connected to the lower platform 200 will tilt upward, and the balance bar tilting upward will make the valve core control opening communicate with the exhaust port, so as to discharge the gas of the gas spring 410, so that the upper platform 300 is adjusted to a horizontal state. It can be seen that in this embodiment, the inflation and exhaust of the gas spring 410 can be controlled by the height valve 600 to be measured, so that the upper platform 300 is adjusted to a horizontal state. That is, the required height is set for the balance bar (then after the unbalanced state, the height valve of this embodiment is adjusted to make the upper platform 300 in a horizontal state).

[0033] Furthermore, the adjustment assembly 400 also includes a vertically arranged connector 420, and the connector 420 is telescopic along its axial direction. In some embodiments, the connector 420 can be a telescopic structure of a sleeve type, which is a prior art and will not be described in detail here. Of course, the connector 420 can also be other structures that can be telescopic along its axial direction. One end of the connector 420 is connected to the lower platform 200, and the other end is connected to one end of the balance bar of the height valve 600 to be measured. Specifically, the connector 420 of this embodiment can be used to set a preset height for the balance bar of the height valve, so that the upper platform 300 can be adjusted to a horizontal level at this height through the height valve, and the present application can be applicable to the testing of different models.

[0034] Further, the lifting component 500 includes a cylinder, the cylinder is connected to the lower platform 200, and the telescopic end of the cylinder is connected to the upper platform 300. Specifically, this embodiment realizes imbalance at different positions (i.e., front, back, left, and right) through the cylinder, with a simple structure and low cost.

[0035] Furthermore, the unbalanced simulation mechanism further includes a pressure gauge 430 for detecting the pressure of the gas spring 410. In some embodiments, the pressure gauge 430 is connected to the pipeline connecting the gas source 100 and the height valve 600 to be measured. Specifically, this embodiment can implement the detection of the pressure in the gas spring 410 to ensure safety.

[0036] Furthermore, the imbalance simulation mechanism also includes a pressure regulating valve 440 for adjusting the pressure of the gas spring 410. In some embodiments, the pressure regulating valve 440 is connected to the pipeline connecting the gas source 100 and the height valve 600 to be measured. Specifically, in this embodiment, the pressure of the gas in the gas spring 410 is adjusted by the pressure regulating valve 440, that is, when the pressure of the gas in the gas spring 410 is high, its pressure is adjusted to a low level, and when the pressure of the gas in the gas spring 410 is low, its pressure is adjusted to a high level. In this way, the situation in which the gas pressure in the gas spring 410 is too high, causing the gas spring 410 to be damaged, is avoided, and the situation in which the pressure in the gas spring 410 is too low, causing the upper platform 300 to be adjusted to a horizontal state for too long or with poor effect, is avoided.

[0037] Furthermore, the unbalanced simulation mechanism further includes a moving assembly 800 disposed at the bottom of the lower platform 200, which is used to realize the movement of the subway vehicle unbalanced simulation platform for the height valve failure test. Specifically, the moving assembly 800 provided in this embodiment facilitates the movement of the mechanism to the target position. In some embodiments, the moving assembly 800 includes a plurality of universal wheels. For example, the moving assembly 800 includes four universal wheels, and the four universal wheels are disposed at the four corners of the bottom of the lower platform 200.

[0038] Further, the bottom of the lower platform 200 is also provided with a retractable support member 900. When the mechanism needs to be moved, the support member 900 is retracted so that the mobile assembly 800 contacts the ground, thereby moving the mechanism to the target position through the mobile assembly 800. In addition, during the movement, the support member 900 does not affect the operation of the mobile assembly 800. In some possible embodiments, the top of the support member 900 is threadedly connected to the bottom of the lower platform 200, and the length of the threaded connection between the support member 900 and the lower platform 200 is adjusted to achieve the telescopic operation of the support member 900, which is convenient and quick to operate. In some embodiments, the support member 900 is arranged at the edge of the bottom of the lower platform 200, which is convenient for adjusting the length of the support member 900.

[0039] This application plays an important role in ensuring the safe and efficient operation of subway vehicles and improving the passenger experience.

[0040] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present invention.

Claims

1. A subway vehicle imbalance simulation platform for height valve failure testing, characterized in that: include: Air source and imbalance simulation mechanism; The imbalance simulation mechanism comprises: Lower platform, horizontal setting; An upper platform, arranged above the lower platform; Four adjustment components are respectively located at four corners of the imbalance simulation mechanism; the adjustment component includes a gas spring; the gas spring is arranged between the lower platform and the upper platform, and is used to adjust the distance between the upper platform and the lower platform; the height valve to be measured is connected to the upper platform; the height valve to be measured is connected to the air source, and is used to control the air intake and exhaust of the gas spring to adjust the height of the upper platform at the corresponding position; Four lifting components are arranged in one-to-one correspondence with the adjustment components; the lifting components are connected with the lower platform and the upper platform to simulate imbalance.

2. The subway vehicle imbalance simulation platform for height valve failure test according to claim 1 is characterized in that: The unbalanced simulation mechanism further comprises four measuring components, which are arranged in one-to-one correspondence with the adjusting components; the measuring components are used to measure the height of the upper platform at the corresponding position in the unbalanced state.

3. The subway vehicle imbalance simulation platform for height valve failure test according to claim 2 is characterized in that: The measuring assembly includes a scale and a pointer; the scale is vertically arranged and connected to the outer side wall of the lower platform; the pointer is arranged on the upper platform; the pointer matches the scale and is used to indicate the scale of the scale.

4. The subway vehicle imbalance simulation platform for height valve failure test according to claim 1 is characterized in that: The unbalance simulation mechanism is divided into two groups of unbalance simulation mechanisms, and the two groups of unbalance simulation mechanisms are arranged side by side front and back; the upper platforms of the two groups of unbalance simulation mechanisms are connected by an upper connecting part, and the lower platforms of the two groups of unbalance simulation mechanisms are connected by a lower connecting part; two gas springs are arranged between the upper platform and the lower platform of one of the unbalance simulation mechanisms.

5. The subway vehicle imbalance simulation platform for height valve failure test according to claim 1 is characterized in that: The height valve to be measured is connected to the gas source through a pipeline; the height valve to be measured is connected to the gas spring through a pipeline.

6. The subway vehicle imbalance simulation platform for height valve failure test according to claim 5 is characterized in that: The adjustment assembly also includes a vertically arranged connecting member, which is telescopic along its axial direction; one end of the connecting member is connected to the lower platform, and the other end is connected to one end of the balance rod of the height valve to be measured.

7. The subway vehicle imbalance simulation platform for height valve failure test according to claim 1 is characterized in that: The lifting component comprises a cylinder, the cylinder is connected to the lower platform, and the telescopic end of the cylinder is connected to the upper platform.

8. The subway vehicle imbalance simulation platform for height valve failure test according to claim 1 is characterized in that: The imbalance simulation mechanism further includes a pressure gauge for detecting the pressure of the gas spring.

9. The subway vehicle imbalance simulation platform for height valve failure test according to claim 8 is characterized in that: The imbalance simulation mechanism further includes a pressure regulating valve for adjusting the pressure of the gas spring.

10. The subway vehicle imbalance simulation platform for height valve failure test according to claim 1, characterized in that: The unbalance simulation mechanism further comprises a moving assembly arranged at the bottom of the lower platform, which is used to realize the movement of the subway vehicle unbalance simulation platform used for the height valve failure test.

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