Height valve reliability test device

Abstract

The invention discloses a height valve reliability test device. The device comprises an electrical control device and a pneumatic pipeline device, the programmable logic controller is respectively connected with the solid-state relays; the electrical control device comprises a programmable logic controller, a plurality of solid-state relays and a plurality of electromagnetic valves connected with the solid-state relays; the pneumatic pipeline device comprises an altitude valve air inlet pipeline, an air compressor, an air source storage air cylinder, a first cutout cock, an air cylinder driving pipeline, a second cutout cock, a first electromagnetic valve, an air cylinder and a vibrator driving pipeline, wherein the air compressor, the air source storage air cylinder, the first cutout cock and the air cylinder are sequentially arranged on the altitude valve air inlet pipeline, and the second cutout cock, the first electromagnetic valve and the air cylinder are sequentially arranged on the air cylinder driving pipeline. The third cutout cock, the second electromagnetic valve, the vibrator and the height valves are sequentially arranged on the vibrator driving pipeline. According to the invention, transverse side pressure is respectively applied to the horizontal lever of the altitude valve and the fastening bolt of the driving shaft of the altitude valve, so that the application working condition of the altitude valve after loading can be simulated to the greatest extent.

Description

Technical Field

[0001] The invention relates to the technical field of rail vehicle design, and in particular to a height valve reliability test device. Background Art

[0002] The height valve on the rail vehicle is an actuator that dynamically adjusts the height of the vehicle body by filling and exhausting the air spring. The height valve body is fixed to the vehicle body by two fastening bolts, and the horizontal lever of the height valve is connected to the bogie through the vertical adjustment rod.

[0003] In order to ensure that the vehicle can run smoothly under different loads and different routes, and thus provide passengers with a comfortable riding environment, high requirements are placed on the reliability of the height valve. Especially when the vehicle accelerates, brakes urgently, turns the line or the vehicle body is in normal operation and generates high-frequency vibration, it is easy to cause the lever to rotate too much, and friction between the piston rod and the valve body occurs due to frequent movement, which can easily cause the height valve piston rod to wear eccentrically, get stuck and sinter. In order to optimize the mechanical structure design of the height valve and improve the reliability of the valve. When designing the height valve, a matching height valve reliability test device must be designed at the same time.

[0004] At present, the publicly available height valve reliability test bench or fatigue test fixture mainly controls the horizontal lever of the height valve through a driving mechanism to cause the piston rod to reciprocate and reach a specified number of movements or fatigue test cycles to verify the reliability of the height valve. However, the above reliability test bench or fatigue test fixture has a single working condition, which is far from the actual working condition of the height valve on the vehicle. Therefore, it is necessary to design a reliability test device for the height valve reliability test device that is closer to the actual working condition.

[0005] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section. Summary of the invention

[0006] The embodiment of the present invention provides a height valve reliability test device, which is used to simulate the application conditions of the height valve after installation to the greatest extent, shortening the test cycle and improving the accuracy of reliability test data.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] The present invention provides a height valve reliability test device, which comprises: an electrical control device and a pneumatic pipeline device;

[0009] The electrical control device comprises: a programmable logic controller, a plurality of solid-state relays and a plurality of solenoid valves connected thereto; the programmable logic controller is connected to the solid-state relays respectively;

[0010] The pneumatic pipeline device comprises: a height valve air inlet pipeline, an air compressor, an air source reserve air cylinder and a first cut-off valve sequentially arranged on the height valve air inlet pipeline, a cylinder drive pipeline, a second cut-off valve, a first solenoid valve and a cylinder sequentially arranged on the cylinder drive pipeline, a vibrator drive pipeline, a third cut-off valve, a second solenoid valve and a vibrator sequentially arranged on the vibrator drive pipeline, and a plurality of height valves;

[0011] The air outlet of the air inlet pipeline of the height valve is connected to the air inlet of the height valve, the cylinder drive pipeline and the vibrator drive pipeline; the cylinder is arranged on the height valve to apply lateral pressure to the fastening bolts on the height valve; the vibrator is connected to the horizontal lever of the height valve to drive the rotational movement of the horizontal lever of the height valve.

[0012] Furthermore, when the programmable logic controller controls the first solenoid valve to be energized through the solid-state relay, the first solenoid valve controls the filling of air in the lower chamber of the cylinder, pushing the piston rod of the cylinder to move in the direction of extending out of the cylinder, so that the piston rod of the cylinder squeezes the fastening bolt on the driving shaft of the height valve.

[0013] Furthermore, when the programmable logic controller controls the second solenoid valve to be energized through the solid-state relay, the second solenoid valve controls the upper chamber of the vibrator to fill with air, pushing the piston rod of the vibrator to move in the direction of retracting the vibrator, so that the piston rod of the vibrator pulls the horizontal lever to move in the clockwise direction.

[0014] Furthermore, when the programmable logic controller controls the first solenoid valve to lose power through the solid-state relay, the first solenoid valve controls the filling of air in the upper chamber of the cylinder, pushing the piston rod of the cylinder to move in the direction of retracting the cylinder, so that the piston rod of the cylinder is disengaged from the fastening bolt on the driving shaft of the height valve.

[0015] Furthermore, when the programmable logic controller controls the second solenoid valve to lose power through the solid-state relay, the second solenoid valve controls the filling of air in the lower chamber of the vibrator, pushing the piston rod of the vibrator to move in the direction of extending out of the vibrator, so that the piston rod of the vibrator pushes the horizontal lever to move counterclockwise.

[0016] Furthermore, the pneumatic pipeline device also includes: a first pressure regulating valve, which is arranged between the first cut-off valve and the air inlet of the height valve.

[0017] Furthermore, the pneumatic pipeline device also includes: a second pressure regulating valve, which is arranged between the first pressure regulating valve and the second shut-off valve.

[0018] Furthermore, the pneumatic pipeline device also includes: a third pressure regulating valve, which is arranged between the first pressure regulating valve and the third shut-off valve.

[0019] Furthermore, the pneumatic pipeline device also includes: a pressure sensor connected to the air spring interface of the height valve.

[0020] Furthermore, the pneumatic pipeline device also includes: a filter, which is arranged between the air source reserve air cylinder and the first cut-off valve.

[0021] A height valve reliability test device provided by an embodiment of the present invention can simulate the application conditions of the height valve after installation to the greatest extent. By adopting the combined application of applying lateral side pressure and high-frequency vibrator, the process of reliability test can be accelerated, thereby shortening the test cycle of reliability test and providing data support for the maintenance of height valve. The use of pressure sensor and photoelectric sensor can efficiently record the effective action times of height valve, thereby improving the accuracy of test data. Through the height valve reliability test device under automatic control, the real-time height valve action times can be recorded and displayed, thereby reducing manual workload. According to the test data of the height valve reliability test device, the height valve functional test and the height valve performance test, the design and optimization of the height valve can be effectively implemented, and it can be evaluated in advance whether the height valve has reliability risks, effectively avoiding the occurrence of eccentric wear, jamming and sintering of the height valve due to internal friction, thereby improving the reliability of the height valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1A is a schematic diagram of an electrical control device in one embodiment of the present invention;

[0024] Figure 1B A schematic diagram of an electrical control device in another embodiment of the present invention;

[0025] Figure 2 A schematic diagram of a pneumatic pipeline device in one embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the physical structure of a height valve reliability test device in one embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the physical structure of a tooling frame in one embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0029] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so as to describe the embodiments of the present invention described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0030] In the present invention, the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction.

[0031] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0032] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] In order to simulate the application conditions of the height valve after installation to the greatest extent, various means such as optoelectronics and electricity are adopted to fully simulate the three-dimensional stress conditions of the height valve after installation to improve the accuracy of the test data. By applying lateral pressure and combining high-frequency vibrators to shorten the test cycle of the reliability test, the present invention provides a height valve reliability test device including an electrical control device and a pneumatic pipeline device.

[0035] like Figure 1A As shown, the electrical control device of the height valve reliability test device includes: a programmable logic controller 102 (Programmable Logic Controller, PLC), a plurality of solid-state relays 104 and a plurality of two-position three-way solenoid valves M1, M2, M3...M8 connected thereto in a one-to-one correspondence; the plurality of solid-state relays 104 are connected to the programmable logic controller 102 respectively.

[0036] Specifically, the programmable logic controller 102 is electrically connected to the plurality of solid-state relays 104 through cables, and the output end of each solid-state relay 104 is electrically connected to one of the above-mentioned solenoid valves through a wiring terminal.

[0037] In one embodiment, the solenoid valve is specifically a two-position three-way solenoid valve, and may also be a valve island solenoid coil, which may be configured according to the needs of those skilled in the art, and is not specifically limited in this embodiment.

[0038] In one embodiment, the programmable logic controller 102 is used to display and record the number of times the height valve is actuated. The solid-state relay 104 is a contactless electronic switch with an isolation function, but the present invention is not limited thereto.

[0039] In one embodiment, if Figure 1B As shown, the electrical control device further includes: a text display 101 and a button 103 , and the text display 101 and the button 103 are electrically connected to the programmable logic controller 102 .

[0040] Specifically, the text display 101 is used to display the current state of the height valve reliability test device. The current state refers to the working state of the height valve reliability test, which includes the reliability test progress state, the reliability test stop state, and the number of actions of the reliability test. The button 103 is used to control the start and stop of the programmable logic controller 102.

[0041] In one embodiment, two solid-state relays 104 and the solenoid valves respectively connected thereto can be used as a group of outputs of the electrical control device. The outputs of the electrical control device can be divided into 4 groups or 8 groups, which are not specifically limited in the embodiment of the present invention. The outputs of the electrical control device in the embodiment of the present invention are described by taking 4 groups as an example.

[0042] Specifically, the output of the electrical control device is divided into 4 groups, each group includes two solid-state relays 104 and two solenoid valves, and the output end of each solid-state relay 104 is connected to its corresponding solenoid valve through a wiring terminal. The present invention controls the power on and off of the solenoid valve through the solid-state relay 104, thereby controlling the on and off of each gas circuit in the pneumatic pipeline device.

[0043] like Figure 2 As shown, the pneumatic pipeline device includes multiple height valves (LV1~LV4), an air compressor P, an air source reserve cylinder A1, a filter L1, a shut-off valve C9, multiple pressure regulating valves (R1~R9), multiple exhaust shut-off valves (C1~C8), multiple two-position three-way solenoid valves (M1~M8), multiple cylinders (01~04), multiple linear vibrators (V1~V4) and multiple pressure sensors (S1~S4), and the above-mentioned pneumatic components are connected by connectors such as hoses, four-way conversion joints, three-way conversion joints and quick-plug joints.

[0044] In one embodiment, the quick-connect connector is used to quickly cut off or conduct the air source of a single pressure regulating valve, and the pressure regulating valve can be quickly disassembled and installed without interrupting the entire reliability test process.

[0045] The pneumatic pipeline device also includes a height valve air inlet pipeline B, a cylinder drive pipeline (D1-D4) and a vibrator drive pipeline (E1-E4).

[0046] like Figure 2 As shown, in one embodiment, the various pneumatic components of the pneumatic pipeline device are explained in detail below by taking the height valve LV1 as an example.

[0047] The air outlet of the height valve air inlet pipeline B is connected to the air inlet V of the height valve LV1, the cylinder drive pipeline D1 and the vibrator drive pipeline E1. The pressure sensor S1 is connected to the empty spring interface L of the height valve LV1.

[0048] In one embodiment, the pressure sensor S1 is used to determine whether there is pressure output at the empty spring interface L of the height valve LV1.

[0049] On the air inlet pipeline B of the height valve, an air compressor P, an air source reserve air cylinder A1 and a cut-off valve C9 are arranged in sequence along the air path direction.

[0050] In one embodiment, the air compressor P is used to supply air to the air source reserve cylinder A1. The shut-off valve C9 is used to control the on-off of the air circuit of the entire pneumatic pipeline device, and adjust the output pressure of the pressure regulating valve R9 to supply the entire pneumatic pipeline device. When necessary, the shut-off valve C9 can be used to cut off the connection between the air source reserve cylinder A1 and the air inlet V of multiple height valves (LV1~LV4), or the connection between the air source and multiple cylinders (01~04) or multiple linear vibrators (V1~V4) can be cut off by the exhaust shut-off valve (C1~C8), thereby stopping the air supply to the pneumatic pipeline. Among them, the output pressure is about 600kPa, which can be set according to the needs of technical personnel in this field.

[0051] The filter L1 is arranged between the air source reserve air cylinder A1 and the cut-off valve C9. The pressure regulating valve R9 is arranged between the cut-off valve C9 and the air inlet V of the height valve LV1.

[0052] In one embodiment, the filter L1 is used to filter impurities and moisture in the air source from the air source storage cylinder A1.

[0053] On the cylinder drive pipeline D1, exhaust air shutoff valve C1, two-position three-way solenoid valve M1 and cylinder 01 are sequentially arranged along the air path direction. The pressure regulating valve R1 is arranged between the pressure regulating valve R9 and the exhaust air shutoff valve C1. The cylinder 01 is arranged on the fastening bolts of the height valve LV1 to apply lateral pressure to the fastening bolts on the height valve LV1.

[0054] On the vibrator drive pipeline E1, an exhaust shutoff valve C2, a two-position three-way solenoid valve M2 and a linear vibrator V1 are sequentially arranged along the gas path. The pressure regulating valve R2 is arranged between the pressure regulating valve R9 and the exhaust shutoff valve C2. The linear vibrator V1 is connected to the end of the horizontal lever of the height valve LV1 to drive the rotational movement of the horizontal lever of the height valve LV1.

[0055] In one embodiment, the vibrator may be a high-frequency vibrator or a linear vibrator, etc., and the present invention does not make any specific limitation.

[0056] like Figure 2 As shown, in one embodiment, the pneumatic components of the pneumatic pipeline device are explained in detail below by taking the height valve LV2 as an example.

[0057] The air outlet of the height valve air inlet pipeline B is connected to the air inlet V of the height valve LV2, the cylinder drive pipeline D2 and the vibrator drive pipeline E2. The pressure sensor S2 is connected to the empty spring interface L of the height valve LV2.

[0058] In one embodiment, the pressure sensor S2 is used to determine whether there is pressure output at the empty spring interface L of the height valve LV2.

[0059] On the cylinder drive pipeline D2, exhaust air shutoff valve C3, two-position three-way solenoid valve M3 and cylinder 02 are sequentially arranged along the air path direction. The pressure regulating valve R3 is arranged between the pressure regulating valve R9 and the exhaust air shutoff valve C3. The cylinder 02 is arranged on the fastening bolt of the height valve LV2 to apply lateral pressure to the fastening bolt on the height valve LV2.

[0060] On the vibrator drive pipeline E2, an exhaust shutoff valve C4, a two-position three-way solenoid valve M4 and a linear vibrator V2 are sequentially arranged along the gas path direction. The pressure regulating valve R4 is arranged between the pressure regulating valve R9 and the exhaust shutoff valve C4. The linear vibrator V2 is connected to the end of the horizontal lever of the height valve LV2 to drive the rotational movement of the horizontal lever of the height valve LV2.

[0061] like Figure 2 As shown, in one embodiment, the various pneumatic components of the pneumatic pipeline device are explained in detail below by taking the height valve LV3 as an example.

[0062] The air outlet of the height valve air inlet pipeline B is connected to the air inlet V of the height valve LV3, the cylinder drive pipeline D3 and the vibrator drive pipeline E3. The pressure sensor S3 is connected to the empty spring interface L of the height valve LV3.

[0063] In one embodiment, the pressure sensor S3 is used to determine whether there is pressure output at the empty spring interface L of the height valve LV3.

[0064] On the cylinder drive pipeline D3, exhaust air shutoff valve C5, two-position three-way solenoid valve M5 and cylinder 03 are sequentially arranged along the air path direction. The pressure regulating valve R5 is arranged between the pressure regulating valve R9 and the exhaust air shutoff valve C5. The cylinder 03 is arranged on the fastening bolt of the height valve LV3 to apply lateral pressure to the fastening bolt on the height valve LV3.

[0065] On the vibrator drive pipeline E3, an exhaust air shutoff valve C6, a two-position three-way solenoid valve M6 and a linear vibrator V3 are sequentially arranged along the gas path direction. The pressure regulating valve R6 is arranged between the pressure regulating valve R9 and the exhaust air shutoff valve C6. The linear vibrator V3 is connected to the end of the horizontal lever of the height valve LV3 to drive the rotational movement of the horizontal lever of the height valve LV3.

[0066] like Figure 2 As shown, in one embodiment, the various pneumatic components of the pneumatic pipeline device are explained in detail below by taking the height valve LV4 as an example.

[0067] The air outlet of the height valve air inlet pipeline B is connected to the air inlet V of the height valve LV4, the cylinder drive pipeline D4 and the vibrator drive pipeline E4. The pressure sensor S4 is connected to the empty spring interface L of the height valve LV4.

[0068] In one embodiment, the pressure sensor S4 is used to determine whether there is pressure output at the empty spring interface L of the height valve LV4.

[0069] On the cylinder drive pipeline D4, exhaust air shutoff valve C7, two-position three-way solenoid valve M7 and cylinder 04 are sequentially arranged along the air path direction. The pressure regulating valve R7 is arranged between the pressure regulating valve R9 and the exhaust air shutoff valve C7. The cylinder 04 is arranged on the fastening bolt of the height valve LV4 to apply lateral pressure to the fastening bolt on the height valve LV4.

[0070] On the vibrator drive pipeline E4, an exhaust shutoff valve C8, a two-position three-way solenoid valve M8 and a linear vibrator V4 are sequentially arranged along the gas path direction. The pressure regulating valve R8 is arranged between the pressure regulating valve R9 and the exhaust shutoff valve C8. The linear vibrator V4 is connected to the end of the horizontal lever of the height valve LV4 to drive the rotational movement of the horizontal lever of the height valve LV4.

[0071] In one embodiment, when conducting a reliability test, the air inlets V of multiple height valves (LV1-LV4) are connected to the pneumatic pipeline device of the height valve reliability test device through a conversion joint or a quick-connect joint. The air spring interface L of the height valve is connected to multiple pressure sensors (S1-S4) through a quick-connect joint. The air compressor P adjusts the pressure of the air source through the pressure regulating valve R9, and then supplies it to the air inlets V of multiple height valves (LV1-LV4) respectively, and after adjusting the pressure through 8 pressure regulating valves (R1-R8), it supplies it to the corresponding cylinder drive pipelines (D1-D4) and vibrator drive pipelines (E1-E4).

[0072] When conducting reliability tests, it is necessary to apply lateral external pressure to the horizontal lever and / or the fastening bolts of the drive shaft of the height valve to simulate the lateral pressure on the vehicle body in operation. When applying lateral external pressure to the fastening bolts of the drive shaft of the height valve, different output pressures can be applied to the cylinders (01-04) by controlling the pressure regulating valves R1, R3, R5 and R7. When applying lateral external pressure to the horizontal lever of the height valve, different output pressures can be applied to the multiple linear vibrators (V1-V4) by controlling the pressure regulating valves R2, R4, R6 and R8. By adjusting the output pressure of the upstream pressure regulating valves of the multiple cylinders (01-04) and the multiple linear vibrators (V1-V4), the force acting on the fastening bolt caps and horizontal levers of the drive shafts of the multiple height valves (LV1-LV4) can be adjusted at any time, thereby testing the reliability of the height valves under different conditions.

[0073] The pneumatic pipeline device records the actual number of actions and air charging times of multiple altitude valves (LV1~LV4) through multiple digital counters and multiple pressure sensors (S1~S4). When the pressure sensor corresponding to the altitude valve displays the output pressure, it means that the valve port of the altitude valve is open and the altitude valve completes one air charging operation.

[0074] When the height valve fails such as lever bending or piston rod sticking during the reliability test, the faulty height valve shall be disassembled and inspected, and the actual number of operations in the reliability test and the cause of the height valve failure shall be recorded.

[0075] In one embodiment, the exhaust pipe of the height valve can be removed, and a muffler can be added to the exhaust port of the height valve to reduce the exhaust noise during the reliability test.

[0076] In one embodiment, before conducting a reliability test, the initial position of the horizontal lever of the height valve to be tested needs to be adjusted to a neutral position, that is, a position where the height valve is neither filled with air nor exhausted, and the photoelectric sensor is adjusted to a preset horizontal height. In addition, the piston rod movement amplitude of the linear vibrator needs to be further set to control the horizontal lever movement amplitude of the height valve to be tested to a preset rotation angle. The preset rotation angle can be ±15°, and the preset horizontal height can be set according to the needs of those skilled in the art, and the present invention is not limited thereto.

[0077] In one embodiment, the height valve reliability test device further includes: a photoelectric sensor for detecting the rotation angle of the horizontal lever of the height valve to be tested.

[0078] During the reliability test, the electrical control device can control the on and off of each branch of the pneumatic pipeline device by controlling the power on and off of multiple two-position three-way solenoid valves (M1-M8). By controlling the power on and off of the two-position three-way solenoid valves M1, M3, M5, M7 corresponding to multiple cylinders (01-04) and the two-position three-way solenoid valves M2, M4, M6, M8 corresponding to multiple linear vibrators V1-V4, multiple height valves (LV1-LV4) can be filled with air, and the height valve LV1 is used as an example for explanation.

[0079] In one embodiment, when the programmable logic controller 102 controls the two-position three-way solenoid valve M1 to be energized through the solid-state relay 104, the two-position three-way solenoid valve M1 controls the filling of the lower chamber of the cylinder 01, thereby pushing the piston rod of the cylinder 01 to move in the direction of extending out of the cylinder 01, so that the nylon joint set at the end of the piston rod of the cylinder 01 is squeezed on the fastening bolt of the height valve LV1 drive shaft, thereby simulating the lateral side pressure exerted on the vehicle body during turning.

[0080] In one embodiment, when the programmable logic controller 102 controls the two-position three-way solenoid valve M2 to be energized through the solid-state relay 104, the two-position three-way solenoid valve M2 controls the upper chamber of the linear vibrator V1 to charge air, thereby pushing the piston rod of the linear vibrator V1 to move in the direction of retracting the linear vibrator V1, so that the linear vibrator V1 pulls the horizontal lever of the height valve LV1 to move in the direction of the arrow on the horizontal lever, that is, clockwise. The arrow direction is the charging direction. At this time, the wind source input from the air inlet V of the height valve LV1 will be output to the pressure sensor S1 from the air spring interface L of the height valve LV1.

[0081] In one embodiment, when the programmable logic controller 102 controls the two-position three-way solenoid valve M1 to lose power through the solid-state relay 104, the two-position three-way solenoid valve M1 controls the upper chamber of the cylinder 01 to fill with air, thereby pushing the piston rod of the cylinder 01 to move in the direction of retracting the cylinder 01, so that the nylon joint at the end of the piston rod of the cylinder 01 is disengaged from the fastening bolts of the height valve LV1 drive shaft, thereby stopping the application of lateral side pressure to the height valve LV1.

[0082] In one embodiment, when the programmable logic controller 102 controls the two-position three-way solenoid valve M2 to lose power through the solid-state relay 104, the two-position three-way solenoid valve M2 controls the filling of the lower chamber of the linear vibrator V1, thereby pushing the piston rod of the linear vibrator V1 to move in the direction of extending the linear vibrator V1, so that the linear vibrator V1 pushes the horizontal lever of the height valve LV1 to move in the opposite direction of the arrow on the horizontal lever, that is, counterclockwise, so that the height valve LV1 exhausts air.

[0083] In one embodiment, the piston rod end of the linear vibrator can be connected to the horizontal lever end of the height valve through a Y-type joint.

[0084] In one embodiment, during the reliability test, if the horizontal lever of the height valve cannot be rotated to a preset rotation angle due to a height valve failure or there is no output pressure at the empty spring interface L of the pressure sensor, the effective number of reliability tests will not be counted.

[0085] In the embodiment of the present invention, by applying lateral side pressure to the horizontal lever of the height valve and the fastening bolt of the driving shaft of the height valve respectively, the application condition of the height valve after installation can be simulated to the greatest extent. By using a cylinder to support the fastening bolt cap of the driving shaft of the height valve, and by adjusting the output pressure of the pressure regulating valve upstream of the cylinder, the lateral pressure acting on the fastening bolt cap of the driving shaft of the height valve can be adjusted at any time, thereby simulating the test conditions of the height valve under different pressure states. By setting the test cycle or setting the reliability test of the number of actions, applying lateral external pressure to the horizontal lever of the height valve by a high-frequency vibrator can accelerate the progress of the reliability test, thereby shortening the test cycle. The combined application of pressure sensors and photoelectric sensors can effectively record the effective number of actions of the height valve, thereby improving the accuracy of the reliability test data.

[0086] like Figure 3 As shown, in one embodiment, the height valve reliability test device 300 further includes: a plurality of tooling racks 400, a button 103, an electrical control device and a pneumatic pipeline device (not shown in the figure). The plurality of tooling racks 400 are arranged on the height valve reliability test device 300, and the electrical control device and the pneumatic pipeline device are arranged in the box of the height valve reliability test device 300.

[0087] In one embodiment, if Figure 4 As shown, each tooling frame 400 is provided with two height valves LV1 and LV2, two linear vibrators V1 and V2, two cylinders O1 and O2 and two pressure sensors (not shown in the figure).

[0088] Specifically, before the reliability test is performed, the height valve to be tested is set on the fixture frame through two fastening bolts, and the horizontal lever of the height valve to be tested is connected to the corresponding linear vibrator through a spherical bearing or a universal joint.

[0089] In the embodiment of the present invention, a height valve reliability test device under automated control is provided, which can display and record the number of actions of the reliability test in real time, greatly reducing the workload of manpower. By applying lateral pressure to the horizontal lever of the height valve and the fastening bolts of the driving shaft of the height valve respectively, the application conditions of the height valve after installation can be simulated to the greatest extent. By combining the application of lateral pressure and a high-frequency vibrator, the process of the reliability test can be accelerated, thereby shortening the test cycle of the reliability test. The use of pressure sensors and photoelectric sensors can efficiently record the effective number of actions of the height valve, thereby improving the accuracy of the reliability test data.

[0090] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A height valve reliability test device, characterized in that: include: Electrical control devices and pneumatic piping devices; The electrical control device comprises: a programmable logic controller, a plurality of solid-state relays and a plurality of solenoid valves connected thereto; the programmable logic controller is connected to the solid-state relays respectively; The pneumatic pipeline device comprises: a height valve air inlet pipeline, an air compressor, an air source reserve air cylinder and a first cut-off valve sequentially arranged on the height valve air inlet pipeline, a cylinder drive pipeline, a second cut-off valve, a first solenoid valve and a cylinder sequentially arranged on the cylinder drive pipeline, a vibrator drive pipeline, a third cut-off valve, a second solenoid valve and a vibrator sequentially arranged on the vibrator drive pipeline, and a plurality of height valves; The air outlet of the air inlet pipeline of the height valve is connected to the air inlet of the height valve, the cylinder drive pipeline and the vibrator drive pipeline; the cylinder is arranged on the height valve to apply lateral pressure to the fastening bolts on the height valve; the vibrator is connected to the horizontal lever of the height valve to drive the rotational movement of the horizontal lever of the height valve.

2. The reliability testing device according to claim 1, characterized in that: When the programmable logic controller controls the first solenoid valve to be energized through the solid-state relay, the first solenoid valve controls the filling of air in the lower chamber of the cylinder, pushing the piston rod of the cylinder to move in the direction of extending out of the cylinder, so that the piston rod of the cylinder squeezes the fastening bolt on the driving shaft of the height valve.

3. The reliability testing device according to claim 1, characterized in that: When the programmable logic controller controls the second solenoid valve to be energized through the solid-state relay, the second solenoid valve controls the upper chamber of the vibrator to fill with air, pushing the piston rod of the vibrator to move in the direction of retracting the vibrator, so that the piston rod of the vibrator pulls the horizontal lever to move in the clockwise direction.

4. The reliability testing device according to claim 1, characterized in that: When the programmable logic controller controls the first solenoid valve to lose power through the solid-state relay, the first solenoid valve controls the filling of air in the upper chamber of the cylinder, pushing the piston rod of the cylinder to move in the direction of retracting the cylinder, so that the piston rod of the cylinder is disengaged from the fastening bolt on the driving shaft of the height valve.

5. The reliability testing device according to claim 1, characterized in that: When the programmable logic controller controls the second solenoid valve to lose power through the solid-state relay, the second solenoid valve controls the filling of air in the lower chamber of the vibrator, pushing the piston rod of the vibrator to move in the direction of extending out of the vibrator, so that the piston rod of the vibrator pushes the horizontal lever to move counterclockwise.

6. The reliability testing device according to claim 1, characterized in that: The pneumatic pipeline device also includes: a first pressure regulating valve, which is arranged between the first cut-off valve and the air inlet of the height valve.

7. The reliability testing device according to claim 6, characterized in that: The pneumatic pipeline device also includes: a second pressure regulating valve, which is arranged between the first pressure regulating valve and the second cut-off valve.

8. The reliability testing device according to claim 6, characterized in that: The pneumatic pipeline device also includes: a third pressure regulating valve, which is arranged between the first pressure regulating valve and the third cut-off valve.

9. The reliability testing device according to claim 1, characterized in that: The pneumatic pipeline device also includes: a pressure sensor connected to the air spring interface of the height valve.

10. The reliability testing device according to claim 1, characterized in that: The pneumatic pipeline device also includes: a filter, which is arranged between the air source reserve air cylinder and the first cut-off valve.

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