Height valve reliability test device

Abstract

The utility model 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 present application 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 a rail vehicle dynamically adjusts the vehicle's height by filling and exhausting air springs. The valve body is secured to the vehicle body with two fastening bolts, and the horizontal lever of the height valve is connected to the bogie via a vertical adjustment rod.

[0003] To ensure smooth operation of vehicles under varying loads and along varying routes, and to provide passengers with a comfortable riding environment, high reliability requirements are placed on the height valve. This is especially true when high-frequency vibrations are generated due to vehicle acceleration, emergency braking, line turns, or normal vehicle operation. This can easily cause the lever to rotate excessively, and friction between the piston rod and the valve body due to frequent movement. This can easily lead to eccentric wear, sticking, and sintering between the height valve piston rod and the valve body. To optimize the mechanical design of the height valve and improve its reliability, a corresponding height valve reliability test device must be designed simultaneously with the height valve design.

[0004] Currently, publicly available reliability test benches or fatigue test fixtures for height valves primarily utilize a drive mechanism to control the horizontal lever of the height valve, causing the piston rod to reciprocate. After achieving a specified number of actuations or fatigue test cycles, the reliability of the height valve is verified. However, these reliability test benches or fatigue test fixtures operate under a single operating condition, significantly different from the actual operating conditions of the height valve on a vehicle. Therefore, a reliability test device for the height valve needs to be designed that more closely resembles actual operating conditions.

[0005] Therefore, the inventor, relying on his many years of experience and practice in related industries, proposed a high-valve reliability test device to overcome the defects of the existing technology.

[0006] This section is intended to provide a background or context to the embodiments of the present application that are recited in the claims. No admission is made that the description herein is prior art by virtue of its inclusion in this section. Utility Model Content

[0007] In response to the problems in the prior art, the present application provides a height valve reliability test device 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.

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: A height valve reliability test device, comprising: an electrical control device and a pneumatic pipeline device;

[0009] The electrical control device includes: 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 includes: a height valve air inlet pipeline, an air compressor, an air source reserve air cylinder and a first shutoff valve sequentially arranged on the height valve air inlet pipeline, a cylinder drive pipeline, a second shutoff valve, a first solenoid valve and an air cylinder sequentially arranged on the cylinder drive pipeline, a vibrator drive pipeline, a third shutoff 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 height valve air inlet pipeline 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, and is used to apply side pressure to the fastening bolts on the height valve; the vibrator is connected to the horizontal lever of the height valve, and is used to drive the rotational movement of the horizontal lever of the height valve.

[0012] Preferably, when the first solenoid valve is energized, air is filled 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 drive shaft of the height valve.

[0013] Preferably, when the second solenoid valve is energized, the upper chamber of the vibrator is filled 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 clockwise.

[0014] Preferably, when the first solenoid valve loses power, the upper chamber of the cylinder is filled with air, 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 drive shaft of the height valve.

[0015] Preferably, when the second solenoid valve loses power, the lower chamber of the vibrator is filled with air, 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] Preferably, the pneumatic pipeline device further includes: a first pressure regulating valve, which is arranged between the first shut-off valve and the air inlet of the height valve.

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

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

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

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

[0021] The utility model provides a height valve reliability test device, which has the following beneficial effects:

[0022] The altitude valve reliability test device can simulate the application conditions of the altitude valve after installation to the greatest extent. By combining the application of lateral pressure and high-frequency vibrators, the reliability test process can be accelerated, thereby shortening the test cycle of the reliability test and providing data support for the maintenance of the altitude valve. The use of pressure sensors and photoelectric sensors can efficiently record the effective number of actions of the altitude valve, improving the accuracy of the test data. The altitude valve reliability test device under automated control can record and display the real-time number of altitude valve actions, thereby reducing manual workload. Based on the test data of the altitude valve reliability test device, the altitude valve functional test and the altitude valve performance test, the design and optimization of the altitude valve can be effectively implemented, and the reliability risk of the altitude valve can be assessed in advance, effectively avoiding the occurrence of eccentric wear, jamming and sintering of the altitude valve due to internal friction, thereby improving the reliability of the altitude valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0024] Figure 1A This is a schematic diagram of an electrical control device in one embodiment of the present invention;

[0025] Figure 1B This is a schematic diagram of an electrical control device in another embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of a pneumatic pipeline device in one embodiment of the present utility model;

[0027] Figure 3 This is a schematic diagram of the physical structure of a height valve reliability test device in one embodiment of the present utility model;

[0028] Figure 4It is a schematic diagram of the physical structure of the tooling frame in one embodiment of the present utility model. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention 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 in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein. In addition, the terms "including" and "having" and any of their variations 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.

[0031] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0032] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to indicate a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0034] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] In order to simulate the application conditions of the height valve after installation to the greatest extent, various means such as optoelectronics and electrical equipment are used to fully simulate the three-dimensional stress conditions of the height valve after installation, so as 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 application provides a height valve reliability test device including an electrical control device and a pneumatic pipeline device.

[0036] 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), multiple solid-state relays 104 and multiple two-position three-way solenoid valves M1, M2, M3...M8 connected to them one by one; multiple solid-state relays 104 are connected to the programmable logic controller 102 respectively.

[0037] 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 solenoid valves through a wiring terminal.

[0038] 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.

[0039] 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 application is not limited thereto.

[0040] 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 .

[0041] Specifically, text display 101 is used to display the current status of the altitude valve reliability test device. This current status refers to the operating status of the altitude valve reliability test, including the reliability test progress status, reliability test stop status, and the number of reliability test operations. Button 103 is used to control the start and stop of the programmable logic controller 102.

[0042] In one embodiment, two solid-state relays 104 and the solenoid valves connected thereto can serve as a group of outputs of the electrical control device. The outputs of the electrical control device can be divided into four or eight groups, which are not specifically limited in this embodiment. The outputs of the electrical control device in this embodiment are described using four groups as an example.

[0043] Specifically, the output of the electrical control device is divided into four groups, each group containing two solid-state relays 104 and two solenoid valves. The output of each solid-state relay 104 is connected to its corresponding solenoid valve via a terminal block. In this application, the solid-state relays 104 control the power supply and power supply of the solenoid valves, thereby controlling the on / off of each air circuit in the pneumatic piping device.

[0044] like Figure 2 As shown, the pneumatic piping 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). The above-mentioned pneumatic components are connected by connectors such as hoses, four-way conversion joints, three-way conversion joints and quick-connect joints.

[0045] In one embodiment, the quick-connect connector is used to quickly cut off or connect 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.

[0046] The pneumatic pipeline device also includes a height valve air inlet pipeline B, a cylinder drive pipeline (D1 to D4) and a vibrator drive pipeline (E1 to E4).

[0047] 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 LV1 as an example.

[0048] The air outlet of the altitude valve air inlet pipe B is connected to the air inlet V of the altitude valve LV1, the cylinder drive pipe D1, and the vibrator drive pipe E1. The pressure sensor S1 is connected to the empty spring interface L of the altitude valve LV1.

[0049] In one embodiment, the pressure sensor S1 is used to determine whether there is pressure output at the empty spring interface L of the altitude valve LV1.

[0050] On the air inlet pipe B of the height valve, the air compressor P, the air source reserve air cylinder A1 and the cut-off valve C9 are arranged in sequence along the air path direction.

[0051] In one embodiment, the air compressor P is used to supply air to the air source storage cylinder A1. The shut-off valve C9 is used to control 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 above-mentioned shut-off valve C9 can be used to cut off the connection between the air source storage cylinder A1 and the air inlet V of multiple height valves (LV1~LV4), or the exhaust shut-off valve (C1~C8) can be used to cut off the connection between the air source and multiple cylinders (01~04) or multiple linear vibrators (V1~V4), 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.

[0052] The filter L1 is set between the air source reserve cylinder A1 and the cut-off valve C9. The pressure regulating valve R9 is set between the cut-off valve C9 and the air inlet V of the height valve LV1.

[0053] In one embodiment, the filter L1 is used to filter impurities and moisture in the air source from the air source storage cylinder A1.

[0054] On cylinder drive pipeline D1, along the air path, are located a shutoff valve with exhaust air C1, a two-position, three-way solenoid valve M1, and cylinder O1. Pressure regulating valve R1 is located between pressure regulating valve R9 and the shutoff valve with exhaust air C1. Cylinder O1 is attached to the fastening bolts of level valve LV1 to apply lateral pressure to the fastening bolts.

[0055] On vibrator drive pipeline E1, along the air path, are located a shutoff valve with exhaust air C2, a two-position, three-way solenoid valve M2, and a linear vibrator V1. Pressure regulating valve R2 is located between pressure regulating valve R9 and the shutoff valve with exhaust air C2. Linear vibrator V1 is connected to the end of the horizontal lever of level valve LV1, driving its rotational motion.

[0056] In one embodiment, the vibrator may be a high-frequency vibrator or a linear vibrator, etc., and this application does not impose any specific limitation.

[0057] 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 LV2 as an example.

[0058] The air outlet of the altitude valve air inlet pipe B is connected to the air inlet V of the altitude valve LV2, the cylinder drive pipe D2, and the vibrator drive pipe E2. The pressure sensor S2 is connected to the air spring interface L of the altitude valve LV2.

[0059] In one embodiment, the pressure sensor S2 is used to determine whether there is pressure output from the empty spring interface L of the altitude valve LV2.

[0060] On cylinder drive pipeline D2, along the air path, are located a shutoff valve with exhaust air C3, a two-position, three-way solenoid valve M3, and cylinder O2. Pressure regulating valve R3 is located between pressure regulating valve R9 and the shutoff valve with exhaust air C3. Cylinder O2 is mounted on the fastening bolts of level valve LV2 to apply lateral pressure to the fastening bolts.

[0061] On vibrator drive pipeline E2, along the air path, are located a shutoff valve with exhaust air C4, a two-position, three-way solenoid valve M4, and a linear vibrator V2. Pressure regulating valve R4 is located between pressure regulating valve R9 and the shutoff valve with exhaust air C4. Linear vibrator V2 is connected to the end of the horizontal lever of level valve LV2, driving its rotation.

[0062] 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.

[0063] The air outlet of the altitude valve air inlet pipe B is connected to the air inlet V of the altitude valve LV3, the cylinder drive pipe D3 and the vibrator drive pipe E3. The pressure sensor S3 is connected to the air spring interface L of the altitude valve LV3.

[0064] In one embodiment, the pressure sensor S3 is used to determine whether there is pressure output from the empty spring interface L of the altitude valve LV3.

[0065] On cylinder drive line D3, along the air path, are located a shutoff valve C5 with exhaust, a two-position, three-way solenoid valve M5, and cylinder O3. Pressure regulating valve R5 is located between pressure regulating valve R9 and the shutoff valve C5 with exhaust. Cylinder O3 is attached to the fastening bolts of level valve LV3 to apply lateral pressure to the fastening bolts.

[0066] On vibrator drive pipeline E3, along the air path, are located a valve with an exhaust shutoff valve C6, a two-position, three-way solenoid valve M6, and a linear vibrator V3. Pressure regulating valve R6 is located between pressure regulating valve R9 and valve with an exhaust shutoff valve C6. Linear vibrator V3 is connected to the end of the horizontal lever of level valve LV3, driving its rotational motion.

[0067] 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.

[0068] The air outlet of the altitude valve air inlet pipe B is connected to the air inlet V of the altitude valve LV4, the cylinder drive pipe D4 and the vibrator drive pipe E4. The pressure sensor S4 is connected to the air spring interface L of the altitude valve LV4.

[0069] In one embodiment, the pressure sensor S4 is used to determine whether there is pressure output from the empty spring interface L of the altitude valve LV4.

[0070] On cylinder drive line D4, along the air path, are located a shutoff valve with exhaust air C7, a two-position, three-way solenoid valve M7, and cylinder O4. Pressure regulating valve R7 is located between pressure regulating valve R9 and the shutoff valve with exhaust air C7. Cylinder O4 is attached to the fastening bolts of level valve LV4 to apply lateral pressure to the fastening bolts.

[0071] On vibrator drive pipeline E4, along the air path, are located a shutoff valve C8 with exhaust, a two-position, three-way solenoid valve M8, and a linear vibrator V4. Pressure regulating valve R8 is located between pressure regulating valve R9 and the shutoff valve C8 with exhaust. Linear vibrator V4 is connected to the end of the horizontal lever of level valve LV4, driving its rotation.

[0072] In one embodiment, during reliability testing, the air inlets V of multiple altitude valves (LV1-LV4) are connected to the pneumatic piping system of the altitude valve reliability tester via adapters or quick-connect connectors. The air spring interface L of the altitude valve is connected to multiple pressure sensors (S1-S4) via quick-connect connectors. An air compressor P adjusts the air pressure via a pressure regulating valve R9 and then supplies the air to the air inlets V of the multiple altitude valves (LV1-LV4). The air is then adjusted via eight pressure regulating valves (R1-R8) and supplied to the corresponding cylinder drive pipelines (D1-D4) and vibrator drive pipelines (E1-E4).

[0073] 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 the vehicle body is subjected to during 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 to 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 to 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 to 04) and the multiple linear vibrators (V1 to V4), the force acting on the fastening bolt caps and horizontal levers of the drive shafts of the multiple height valves (LV1 to LV4) can be adjusted at any time, thereby testing the reliability of the height valves under different conditions.

[0074] 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.

[0075] When the height valve fails in the reliability test, such as lever bending or piston rod jamming, 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.

[0076] 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.

[0077] In one embodiment, before conducting a reliability test, the initial position of the horizontal lever of the height valve to be tested must be adjusted to a neutral position (i.e., a position where the height valve neither fills nor exhausts air), and the photoelectric sensor must be adjusted to a preset horizontal height. Furthermore, the piston rod movement amplitude of the linear vibrator must be further adjusted to control the movement amplitude of the horizontal lever 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 this application is not limited thereto.

[0078] 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.

[0079] During the reliability test, the electrical control device controls the on / off switching of the various branches of the pneumatic piping system by controlling the power on / off of multiple two-position, three-way solenoid valves (M1-M8). By controlling the power on / off of the two-position, three-way solenoid valves M1, M3, M5, and M7 corresponding to the multiple cylinders (01-04) and the two-position, three-way solenoid valves M2, M4, M6, and M8 corresponding to the multiple linear vibrators V1-V4, multiple level valves (LV1-LV4) can be charged. Level valve LV1 is used as an example for this description.

[0080] In one embodiment, when the two-position three-way solenoid valve M1 is energized, the lower chamber of the cylinder 01 is filled with air, 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 provided at the end of the piston rod of the cylinder 01 is squeezed onto the fastening bolt of the height valve LV1 drive shaft, thereby simulating the lateral side pressure exerted on the vehicle body during turning.

[0081] In one embodiment, when the two-position, three-way solenoid valve M2 is energized, air fills the upper chamber of the linear vibrator V1, pushing the piston rod of the linear vibrator V1 toward its retraction direction. This causes the linear vibrator V1 to pull the horizontal lever of the level valve LV1 in the direction indicated by the arrow on the lever, i.e., clockwise. The arrow indicates the direction of air filling. At this point, the air source input to the air inlet V of the level valve LV1 is output to the pressure sensor S1 through the air spring interface L of the level valve LV1.

[0082] In one embodiment, when the two-position three-way solenoid valve M1 loses power, the upper chamber of the cylinder 01 is filled 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 bolt of the height valve LV1 drive shaft, thereby stopping the application of lateral side pressure to the height valve LV1.

[0083] In one embodiment, when the two-position three-way solenoid valve M2 loses power, the lower chamber of the linear vibrator V1 is filled with air, 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, thereby exhausting the height valve LV1.

[0084] In one embodiment, the end of the piston rod of the linear vibrator can be connected to the end of the horizontal lever of the height valve through a Y-type joint.

[0085] In one embodiment, during the reliability test, if the horizontal lever of the height valve cannot be rotated to the 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.

[0086] In the embodiment of the present utility model, 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 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 the number of actions for reliability testing, 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 number of effective actions of the height valve, thereby improving the accuracy of the reliability test data.

[0087] like Figure 3As shown, in one embodiment, the height valve reliability test device 300 further includes: a plurality of fixtures 400, a button 103, an electrical control device, and a pneumatic pipeline device (not shown). The plurality of fixtures 400 are mounted on the height valve reliability test device 300, and the electrical control device and pneumatic pipeline device are mounted in a housing of the height valve reliability test device 300.

[0088] In one embodiment, if Figure 4 As shown, each fixture 400 is equipped with two height valves LV1 and LV2, two linear vibrators V1 and V2, two cylinders O1 and O2, and two pressure sensors (not shown). Specifically, before conducting the reliability test, the height valve to be tested is mounted on the fixture using two fastening bolts, and the horizontal lever of the height valve to be tested is connected to the corresponding linear vibrator via a spherical bearing or universal joint.

[0089] In the embodiment of the present utility model, a reliability test device for a height valve 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 above description is only an illustrative embodiment of the present invention and is not intended to limit the scope of the present invention. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principle of the present invention shall fall within 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 includes: 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 includes: a height valve air inlet pipeline, an air compressor, an air source reserve air cylinder and a first shutoff valve sequentially arranged on the height valve air inlet pipeline, a cylinder drive pipeline, a second shutoff valve, a first solenoid valve and an air cylinder sequentially arranged on the cylinder drive pipeline, a vibrator drive pipeline, a third shutoff 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 height valve air inlet pipeline 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, and is used to apply side pressure to the fastening bolts on the height valve; the vibrator is connected to the horizontal lever of the height valve, and is used 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 first solenoid valve is energized, the lower chamber of the cylinder is filled with air, 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 drive shaft of the height valve.

3. The reliability testing device according to claim 1, wherein: When the second solenoid valve is energized, the upper chamber of the vibrator is filled 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, wherein: When the first solenoid valve loses power, the upper chamber of the cylinder is filled with air, 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 separated from the fastening bolt on the drive shaft of the height valve.

5. The reliability testing device according to claim 1, wherein: When the second solenoid valve loses power, the lower chamber of the vibrator is filled with air, 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, wherein: 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 shut-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 shut-off valve.

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

Images