Detection device for quick discharge valve of lifting bow

Abstract

A detection device for a lifting bow quick discharge valve comprises a box body provided with a butt joint mechanism and an electric control mechanism, the butt joint mechanism comprises a placement tool located at the top of the box body, a transverse cylinder assembly and a longitudinal cylinder assembly, the placement tool is provided with a mounting groove used for containing the quick discharge valve, and the transverse cylinder assembly comprises an A-direction cylinder. The longitudinal air cylinder assembly comprises an R-direction air cylinder, air inlet tools are installed on telescopic rods of the A-direction air cylinder and the R-direction air cylinder correspondingly, air inlet pipes are connected to the air inlet tools, air outlets are formed in the air inlet tools, and the A-direction air cylinder can drive the air inlet tools to move till the air outlets are in butt joint communication with an A-direction air opening in the side face of the quick exhaust valve. The R-direction air cylinder can drive the air inlet tool to move till an air outlet is in butt joint communication with an R-direction air opening in the top face of the quick exhaust valve, and the electric control mechanism comprises a controller, a main air source and a plurality of air valves. According to the utility model, the quick discharge valve can be independently and conveniently installed, connected and detected, repeated detection can be carried out for multiple times to fully simulate the use condition, and the reliability of the detection result is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lift bow quick exhaust valve detection, in particular to a lift bow quick exhaust valve detection device. Background Art

[0002] The pantograph quick exhaust valve is a key component of the pantograph system in electric locomotives. It mainly controls the lifting and lowering of the pantograph and provides protection. The quick exhaust valve is usually composed of a valve body, a spring, a template assembly and an upper cover. These components work together to ensure that the quick exhaust valve can respond to control signals accurately and quickly.

[0003] When the quick exhaust valve is in use, abnormal exhaust may occur due to factors such as leakage in the ADD air circuit and the pressure switch air circuit (R direction), impurities clogging the quick exhaust valve damping hole (P direction), or deformation of the quick exhaust valve diaphragm material under extreme ambient temperatures. This may cause the quick exhaust valve to quickly lower the bow or be unable to raise the bow. Therefore, it is necessary to combine it with the pantograph for detection, but the existing detection device is relatively cumbersome to install and connect, the detection is inconvenient, and it is difficult to achieve automatic and repeated detection. Utility Model Content

[0004] The purpose of the utility model is to provide a detection device for a lifting bow quick exhaust valve, which is convenient for independent installation, connection detection and can be tested repeatedly for many times.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: a detection device for a lifting bow quick exhaust valve, comprising a box body equipped with a docking mechanism and an electric control mechanism, the docking mechanism comprising a placement tool located on the top of the box body, a horizontal cylinder assembly and a longitudinal cylinder assembly, a mounting groove for accommodating the quick exhaust valve is provided on the placement tool, a bottom surface of the mounting groove is provided with an exhaust hole for docking and communicating with the P-direction air port on the bottom surface of the quick exhaust valve, and a side wall of the mounting groove is provided with an A-direction air port for exposing the quick exhaust valve. The horizontal cylinder assembly includes an A-direction cylinder capable of horizontal telescopic movement, and the longitudinal cylinder assembly includes an R-direction cylinder capable of vertical telescopic movement. The telescopic rods of the A-direction cylinder and the R-direction cylinder are respectively equipped with air intake tooling, and the air intake tooling is connected to an air intake pipe and is provided with an air outlet. The A-direction cylinder can drive the air intake tooling to move until the air outlet is connected to the A-direction air port on the side of the quick exhaust valve, and the R-direction cylinder can drive the air intake tooling to move until the air outlet is connected to the R-direction air port on the top surface of the quick exhaust valve.

[0006] The electronic control mechanism includes a controller and a total air source, the total air source is connected to the total air intake valve, the total air intake valve is respectively connected to the driving pressure regulating valve and the air intake pressure regulating valve, the driving pressure regulating valve is respectively connected to the A-direction cylinder valve and the R-direction cylinder valve, so as to facilitate the supply of air to the A-direction cylinder and the R-direction cylinder through the total air source; the air intake pressure regulating valve is respectively connected to the air inlets of the A-direction air intake valve and the R-direction air intake valve, and the air outlets of the A-direction air intake valve and the R-direction air intake valve are respectively connected to the air intake pipes of the two air intake toolings, so as to facilitate the supply of air to the A-direction air port and the R-direction air port through the total air source; a driving pressure gauge is installed on the driving pressure regulating valve, and an air intake pressure gauge is installed on the air intake pressure regulating valve, the controller can respectively receive the pressure detection values ​​of the driving pressure gauge and the air intake pressure gauge, and the controller is respectively electrically connected to the total air intake valve, the driving pressure regulating valve, the air intake pressure regulating valve, the A-direction air intake valve and the R-direction air intake valve.

[0007] Preferably, the depth of the mounting groove is less than the thickness of the quick exhaust valve.

[0008] Preferably, the A-direction cylinder is a linear cylinder, and the R-direction cylinder is a rotary downward pressure cylinder.

[0009] Preferably, one end of the air inlet tooling has a tapered convex portion, the air outlet is located at the small end of the convex portion, and a sealing ring is installed at the large end of the convex portion.

[0010] Preferably, an exhaust port is provided on the A-direction air intake valve and the R-direction air intake valve respectively.

[0011] Preferably, a control panel is provided on the top of the box, and an operating screen is provided on the control panel.

[0012] According to the above technical solution, the beneficial effects of the utility model are:

[0013] The utility model integrates the docking mechanism and the electric control mechanism into the box body, and can independently and conveniently install, connect and test the quick exhaust valve. The controller controls the drive pipeline and the air intake pipeline to automatically connect and test the process, which can effectively simulate the lifting bow and pressure holding action of the quick exhaust valve, thereby performing a quick exhaust performance test and a pressure holding performance test. Multiple repeated tests can be performed to fully simulate the usage conditions and ensure the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the present utility model;

[0015] Figure 2 This is a partial enlarged view of the quick exhaust valve when it is placed;

[0016] Figure 3 This is a partial enlarged view when the quick exhaust valve is not placed;

[0017] Figure 4 is a schematic diagram of a transverse cylinder assembly and a longitudinal cylinder assembly;

[0018] Figure 5 This is the gas circuit connection schematic.

[0019] Markings in the figure: 1. Box body, 2. Control panel, 3. Placement tooling, 4. Quick exhaust valve, 5. A-direction cylinder, 6. R-direction cylinder, 7. Intake tooling, 8. Intake pipe, 9. Mounting groove, 10. Exhaust hole, 11. Protruding mouth, 12. Sealing ring. DETAILED DESCRIPTION

[0020] With reference to the accompanying drawings, the specific implementation is as follows:

[0021] like Figure 1-3 As shown, a detection device for a lifting bow quick exhaust valve includes a box body 1 equipped with a docking mechanism and an electric control mechanism. The docking mechanism includes a placement tool 3 located on the top of the box body 1, a horizontal cylinder assembly, and a longitudinal cylinder assembly. The placement tool 3 is provided with a mounting groove 9 for accommodating a quick exhaust valve 4. The bottom surface of the mounting groove 9 is provided with an exhaust hole 10 for docking and communicating with the P-direction air port on the bottom surface of the quick exhaust valve 4. The side wall of the mounting groove 9 is provided with an opening for exposing the A-direction air port of the quick exhaust valve 4. Figure 2 As shown, the depth of the mounting groove 9 is smaller than the thickness of the quick exhaust valve 4, that is, the lower half of the quick exhaust valve 4 is adapted to be embedded in the mounting groove 9, and the A-direction air port of the quick exhaust valve 4 is penetrated through the side wall of the mounting groove 9, which is convenient for the A-direction air port to be connected.

[0022] like Figure 1-3 As shown, the horizontal cylinder assembly includes an A-direction cylinder 5 capable of horizontal telescopic movement. A-direction cylinder 5 is a linear cylinder. The longitudinal cylinder assembly includes an R-direction cylinder 6 capable of vertical telescopic movement. R-direction cylinder 6 is a rotary downward pressure cylinder. After resetting, the rotary downward pressure cylinder can be moved to the outside of the quick exhaust valve 4 without affecting the vertical movement of the quick exhaust valve 300, facilitating the placement and removal of the quick exhaust valve 300.

[0023] like Figure 1-3 As shown, an air intake fixture 7 is respectively installed on the telescopic rod of the A-direction cylinder 5 and the R-direction cylinder 6. The air intake fixture 7 is connected to an air intake pipe 8 and has an air outlet. The A-direction cylinder 5 can drive the air intake fixture 7 to move until the air outlet is connected to the A-direction air port on the side of the quick-exhaust valve 4, and the R-direction cylinder 6 can drive the air intake fixture 7 to move until the air outlet is connected to the R-direction air port on the top surface of the quick-exhaust valve 4. One end of the air intake fixture 7 has a tapered protruding portion 11, and the air outlet is located at the small end of the protruding portion 11. The large end of the protruding portion 11 is installed with a sealing ring 12. The protruding portion 11 can partially extend into the A-direction air port and the R-direction air port, and the sealing ring 12 is in contact with the top surface or side surface of the quick-exhaust valve 4 to ensure the airtightness inside the quick-exhaust valve 4.

[0024] like Figure 5As shown, the electronic control mechanism includes a controller and a main air source. The main air source is connected to the main air intake valve, which is respectively connected to the driving pressure regulating valve and the air intake pressure regulating valve. The driving pressure regulating valve is respectively connected to the A-direction cylinder valve and the R-direction cylinder valve, so that air can be supplied to the A-direction cylinder 5 and the R-direction cylinder 6 through the main air source. The air intake pressure regulating valve is respectively connected to the air intake ports of the A-direction air intake valve and the R-direction air intake valve. The A-direction air intake valve and the R-direction air intake valve are each provided with an exhaust port and an air outlet. The air outlets of the A-direction air intake valve and the R-direction air intake valve are respectively connected to the air intake pipes 8 of two air intake fixtures 7, so that air can be supplied to the A-direction air port and the R-direction air port through the main air source.

[0025] like Figure 5 As shown, a driving pressure gauge is installed on the driving pressure regulating valve, and an intake pressure gauge is installed on the intake pressure regulating valve. The controller can receive the pressure detection values ​​of the driving pressure gauge and the intake pressure gauge respectively. A control panel 2 is also provided on the top of the box body 1, and an operating screen is provided on the control panel 2 to display pressure-related values.

[0026] like Figure 5 As shown by the dotted lines, the controller is electrically connected to the main intake valve, the drive pressure regulating valve, the intake pressure regulating valve, the A-direction intake valve, and the R-direction intake valve. During testing, the drive pressure regulating valve can be adjusted based on the docking pressure requirements of the A-direction cylinder 5 and the R-direction cylinder 6 to match the value on the drive pressure gauge with the required pressure. Similarly, the intake pressure regulating valve can be adjusted based on the pressure requirements of the A-direction and R-direction ports of the quick exhaust valve 4 to match the intake pressure with the required pressure. When the A-direction and R-direction intake valves lose power, their exhaust ports automatically exhaust and depressurize the corresponding ports, thereby discharging the compressed gas from the ports connected to them.

[0027] When starting the test, first preset the pressure holding time parameters, pressure relief time parameters and test number parameters on the operation screen; then click the corresponding test switch, such as the intermittent exhaust test switch or the intermittent pressure holding test switch, and the equipment will enter the automatic operation state; in addition, the manual test mode can also be used, and each valve needs to be manually triggered to control the corresponding switch.

[0028] The purpose of the intermittent exhaust test is to simulate the actual raising / lowering action of the lifting bow to test the rapid exhaust performance of the quick exhaust valve. Through multiple high-frequency cycle tests, the safety hazards of the safety quick exhaust valve are detected. During the test, it is necessary to observe whether the driving pressure gauge increases or decreases the pressure normally to determine whether the quick exhaust valve diaphragm is working normally. For example, when the R-direction intake valve loses power and exhausts the pressure for a preset time, the pressure in the upper chamber of the quick exhaust valve is lower than the pressure in the lower chamber of the quick exhaust valve. The quick exhaust valve diaphragm is compressed by the pressure in the lower chamber and bulges. The exhaust port of the lower chamber of the quick exhaust valve is opened to exhaust, and the pressure gauge index drops.

[0029] The intermittent pressure-holding test is primarily used to detect leaks in quick exhaust valves. It maintains pressure by disconnecting the main intake valve after inflation to assess the valve's pressure-holding performance. In this test mode, the intake pressure gauge is observed for leakage (pressure drop) after the air circuit is closed to determine pressure-holding performance.

[0030] The detection device of this embodiment can perform an intermittent exhaust test process and an intermittent pressure holding test process respectively. The two processes can be performed independently without any particular order. One or both detection processes can be selected according to the test requirements.

Claims

1. A detection device for a lifting bow quick exhaust valve, characterized by: The invention comprises a box body (1) equipped with a docking mechanism and an electric control mechanism, wherein the docking mechanism comprises a placement tool (3) located on the top of the box body (1), a horizontal cylinder assembly and a longitudinal cylinder assembly, a mounting groove (9) for accommodating a quick exhaust valve (4) is provided on the placement tool (3), a vent hole (10) for docking and communicating with the P-direction air port on the bottom of the quick exhaust valve (4) is provided on the bottom surface of the mounting groove (9), an opening for exposing the A-direction air port of the quick exhaust valve (4) is provided on the side wall of the mounting groove (9), and the horizontal cylinder assembly comprises a gas hole (10) capable of horizontal telescopic movement. The A-direction cylinder (5) is movable, and the longitudinal cylinder assembly includes an R-direction cylinder (6) capable of vertical telescopic movement. An air intake tooling (7) is respectively installed on the telescopic rods of the A-direction cylinder (5) and the R-direction cylinder (6). The air intake tooling (7) is connected to an air intake pipe (8) and is provided with an air outlet. The A-direction cylinder (5) can drive the air intake tooling (7) to move to the air outlet so as to connect and communicate with the A-direction air outlet on the side of the quick exhaust valve (4). The R-direction cylinder (6) can drive the air intake tooling (7) to move to the air outlet so as to connect and communicate with the R-direction air outlet on the top surface of the quick exhaust valve (4). The electric control mechanism includes a controller and a total air source, the total air source is connected to the total air intake valve, the total air intake valve is respectively connected to the driving pressure regulating valve and the air intake pressure regulating valve, the driving pressure regulating valve is respectively connected to the A-direction cylinder valve and the R-direction cylinder valve, so as to facilitate air supply to the A-direction cylinder (5) and the R-direction cylinder (6) through the total air source; the air intake pressure regulating valve is respectively connected to the air intake ports of the A-direction air intake valve and the R-direction air intake valve, the air outlet ports of the A-direction air intake valve and the R-direction air intake valve are respectively connected to the air intake pipes (8) of the two air intake fixtures (7), so as to facilitate air supply to the A-direction air port and the R-direction air port through the total air source; a driving pressure gauge is installed on the driving pressure regulating valve, and an air intake pressure gauge is installed on the air intake pressure regulating valve, the controller can respectively receive pressure detection values ​​of the driving pressure gauge and the air intake pressure gauge, and the controller is respectively electrically connected to the total air intake valve, the driving pressure regulating valve, the air intake pressure regulating valve, the A-direction air intake valve and the R-direction air intake valve.

2. The detection device for a lifting bow quick exhaust valve according to claim 1, characterized in that: The depth of the mounting groove (9) is less than the thickness of the quick exhaust valve (4).

3. The detection device for a lifting bow quick exhaust valve according to claim 1, characterized in that: The A-direction cylinder (5) is a linear cylinder, and the R-direction cylinder (6) is a rotary downward pressure cylinder.

4. The detection device for a lifting bow quick exhaust valve according to claim 1, characterized in that: One end of the air inlet tooling (7) has a conical convex portion (11), the air outlet is located at the small end of the convex portion (11), and a sealing ring (12) is installed at the large end of the convex portion (11).

5. The detection device for a lifting bow quick exhaust valve according to claim 1, characterized in that: Exhaust ports are respectively provided on the A-direction air intake valve and the R-direction air intake valve.

6. The detection device for a lifting bow quick exhaust valve according to claim 1, characterized in that: A control panel (2) is also provided on the top of the box body (1), and an operating screen is provided on the control panel (2).

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