A test device for a passive obstacle detection device of a rail vehicle

Abstract

The utility model discloses a kind of test equipment of passive obstacle detection device of rail transit vehicle, it includes base, the base bottom is provided with the clamping device for being clamped on guide rail, the base is connected with the left and right movable screw rod, the screw rod is provided with slider, the slider is equipped with crossbeam contact block by connecting rod, the crossbeam contact block is rubber block, pressure sensor is provided on the connecting rod, the base is provided with pneumatic cylinder, the telescopic rod on the pneumatic cylinder is fixedly connected with the slider, the pneumatic cylinder is controlled by PLC controller, the PLC controller is used to receive the transmission signal of the pressure sensor and according to the transmission signal control the pneumatic cylinder movement.This equipment can simulate the operation scene when vehicle operating in warehouse passive obstacle detection device detects crossbeam impact to obstacle triggers vehicle emergency stop, ensure the convenience, safety, real-time, accuracy, flexibility, practicality when passive obstacle detection device test.

Description

Technical Field

[0001] This utility model relates to a testing device for rail transit vehicles, and more particularly to a testing device for a passive obstacle detection device for rail transit vehicles. Background Technology

[0002] As a crucial component of safe vehicle operation, the passive obstacle detection device for rail transit vehicles is primarily used to detect various obstacles that may appear on the track, such as rocks and large foreign objects, thereby improving the safety and reliability of vehicle operation. The passive obstacle detection device consists of a detection beam, a passive obstacle detection limit switch, and an electrical control box. The passive obstacle detection limit switch is installed inside the detection beam. When the detection beam collides with an obstacle, such as a rock or large foreign object, during vehicle operation, the impact force acts on the detection beam, triggering the passive obstacle detection limit switch and causing the vehicle to brake suddenly, thus preventing serious accidents such as derailment and overturning that could threaten passenger safety and the normal operation of the subway system.

[0003] Passive obstacle detection devices can monitor track conditions in real time while the train is running. When an obstacle is detected, timely braking and other measures can be taken to avoid accidents or mitigate their harm. Passive obstacle detection devices are critical components for vehicle safety, therefore, functional testing is essential. If any test fails, the passive obstacle detection device must be inspected to ensure it functions properly and to guarantee safe vehicle operation.

[0004] Currently, the functional testing of passive obstacle detection devices mainly involves manually applying pressure to the detection beam. This method cannot guarantee the accuracy of the applied pressure; excessive pressure can damage the beam, while insufficient pressure can trigger emergency braking, failing to realistically simulate a vehicle's on-line driving scenario. Because this testing method cannot guarantee the authenticity of vehicle operation scenarios and is prone to damaging the detection beam, it cannot guarantee the convenience, real-time performance, accuracy, and flexibility of passive obstacle detection device testing, and it also poses safety hazards. Utility Model Content

[0005] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a testing device for a passive obstacle detection device for rail transit vehicles.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a test device for a passive obstacle detection device for rail transit vehicles, which includes a base, a clamping device for clamping the device onto a guide rail is provided at the bottom of the base, a lead screw that can move left and right is passed through the base, a slider is provided on the lead screw, a crossbeam contact block is installed on the slider through a connecting rod, the crossbeam contact block is a rubber block, a pressure sensor is provided on the connecting rod, a cylinder is provided on the base, a telescopic rod on the cylinder is fixedly connected to the slider, the cylinder is controlled by a PLC controller, the PLC controller is used to receive the transmission signal of the pressure sensor and control the movement of the cylinder according to the transmission signal.

[0007] According to some embodiments of the present invention, the clamping device includes a hook disposed on one side of the bottom of the base and a locking cylinder disposed on the other side of the bottom of the base.

[0008] According to some embodiments of the present invention, a push-pull locking clamp is provided on the other side of the bottom of the base.

[0009] According to some embodiments of this utility model, the locking cylinder is a three-axis cylinder.

[0010] According to some embodiments of this utility model, the locking cylinder is controlled by a PLC controller.

[0011] According to some embodiments of the present invention, the two ends of the lead screw are respectively provided with lead screw stroke adjustment bolts.

[0012] According to some embodiments of this utility model, the PLC controller is equipped with a pressure regulating valve for setting the maximum pressure value that the crossbeam contact block can withstand.

[0013] According to some embodiments of this utility model, the PLC controller is equipped with an emergency stop switch for controlling the cylinder to exhaust air in an emergency, causing the crossbeam contact block to retract.

[0014] According to some embodiments of this utility model, the lead screw is further provided with a limiting slider to limit the control position of the connecting rod.

[0015] According to some embodiments of this utility model, there are two limiting sliders, which are located on the left and right sides of the slider respectively.

[0016] This utility model has at least the following beneficial effects: This device can simulate the operation scenario in the warehouse where the passive obstacle detection device detects the crossbeam hitting an obstacle and triggers the vehicle to stop urgently, ensuring the convenience, safety, real-time performance, accuracy, flexibility and practicality of the passive obstacle detection device during testing. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model in use. Detailed Implementation

[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0023] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0024] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.

[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0026] Reference Figure 1A testing device for a passive obstacle detection device for rail transit vehicles includes a base 1. A clamping device 2 for mounting the base 1 on a guide rail is located at the bottom of the base 1. A movable lead screw 3 passes through the base 1. A slider 4 is mounted on the lead screw 3. A crossbeam contact block 5 is mounted on the slider 4 via a connecting rod 41. To avoid rigid collisions, the crossbeam contact block 5 is made of rubber. A pressure sensor 6 is mounted on the connecting rod 41. A cylinder 7 is mounted on the base 1. A telescopic rod 71 on the cylinder 7 is fixedly connected to the slider 4. The cylinder 7 is controlled by a PLC controller 8, which receives the transmission signal from the pressure sensor 6 and controls the movement of the cylinder 7 according to the transmission signal.

[0027] Reference Figure 2 The clamping device 2 includes a hook 21 located on one side of the bottom of the base 1 and a locking cylinder 22 located on the other side of the bottom of the base 1. The locking cylinder 22 is a three-axis cylinder. In use, the hook 21 is first engaged with one side of the rail 10, and the PLC controller 8 can operate the locking cylinder 22 to fix the base 1 to the rail 10. A push-pull locking clamp 23 is provided on the other side of the bottom of the base 1. When there is no air source, the push-pull locking clamp 23 can be manually operated to fix the base 1 to the rail 10. The locking cylinder 22 is controlled by the PLC controller 8.

[0028] Reference Figure 3 The telescopic rod 71 on cylinder 7 extends and retracts, causing slider 4 to move left and right. Simultaneously, the thread on slider 4 drives the lead screw to move left and right relative to base 1, thus enabling the crossbeam contact block 5 to move left and right parallel to rail 10. Both ends of the lead screw 3 are equipped with lead screw stroke adjustment bolts 31. The range of motion of the crossbeam contact block 5 can be adjusted according to the lead screw stroke. This equipment typically adjusts the range of motion of the crossbeam contact block 5 to 0-100 mm.

[0029] The lead screw 3 is also equipped with two limiting sliders 9 to control the position of the connecting rod 41. These limiting sliders 9 are located on the left and right sides of the slider 4, respectively. Each limiting slider 9 is "п"-shaped, with a movable bolt at its opening to limit the position of the connecting rod 41. When it is necessary to reverse the direction of the crossbeam contact block 5, the movable bolt can be loosened, and the connecting rod 41, along with the crossbeam contact block 5, can be rotated 180 degrees. The connecting rod 41 can then be positioned on the limiting slider 9 on the other side. This design demonstrates the operational flexibility of the equipment.

[0030] Reference Figure 4This diagram illustrates the usage state of the present invention. The device is installed on one side of the rail 10 and connected to an external air source via a switching valve. The external air source is typically an air tank 11 inside the carriage. The air tank 11 supplies high-pressure gas to the locking cylinder 22 and cylinder 7 through the switching valve. The switching valve is a manual sliding valve, which is widely used in pneumatic control due to its ease of operation, sensitive response, and durability. The design of the manual sliding valve allows the operator to open and close the valve with a simple sliding motion, improving work efficiency.

[0031] The PLC controller 8 used in this equipment is a PLC touch screen all-in-one machine, which is mainly used for the transmission and control of the air circuit. The PLC touch screen is equipped with pneumatic clamping and pneumatic releasing buttons. By operating the corresponding buttons on the PLC touch screen, the locking cylinder 22 can be controlled to extend its air rod to push against the side of the rail 10, fixing the base 1 to the rail 10; conversely, the locking cylinder 22 retracts its air rod, causing the base 1 to detach from the rail 10.

[0032] The PLC touchscreen also has buttons for moving right and left. The PLC controller 8 controls the cylinder 7 to move through the solenoid valve 13, thereby driving the lead screw 3 to rotate forward / reverse. The lead screw 3 is equipped with a slider 4, which drives the crossbeam contact block 5 to move right / left. When the crossbeam contact block 5 contacts the passive obstacle detection device detection crossbeam 12, the pressure sensor 6 will feed back the pressure applied to the crossbeam 12 and display it on the PLC touchscreen.

[0033] The PLC controller 8 is equipped with a pressure regulating valve 81, which is used to set the maximum pressure value that the crossbeam contact block 5 can withstand. When the measured pressure equals the set maximum pressure, the PLC controller 8 controls the cylinder 7 to exhaust air, causing the crossbeam contact block 5 to retract and preventing damage to the detection crossbeam 12 on the passive obstacle detection device. The PLC controller 8 is also equipped with an emergency stop switch 82, which can also cut off the voltage to the solenoid valve 13, causing the cylinder 7 to exhaust air and retract the crossbeam contact block 5, preventing damage to the crossbeam on the passive obstacle detection device.

[0034] This equipment can simulate the operational scenario of a vehicle in operation, where the passive obstacle detection device detects the crossbeam 12 hitting an obstacle and triggers an emergency stop for the vehicle. This ensures the convenience, safety, real-time performance, accuracy, flexibility, and practicality of the passive obstacle detection device during testing.

[0035] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A testing device for a passive obstacle detection device for rail transit vehicles, characterized in that: The system includes a base (1), a clamping device (2) for clamping the base (1) onto a guide rail, a lead screw (3) that can move left and right passing through the base (1), a slider (4) on the lead screw (3), a crossbeam contact block (5) on the slider (4) via a connecting rod (41), the crossbeam contact block (5) being a rubber block, a pressure sensor (6) on the connecting rod (41), a cylinder (7) on the base (1), a telescopic rod (71) on the cylinder (7) being fixedly connected to the slider (4), and the cylinder (7) being controlled by a PLC controller (8), the PLC controller (8) being used to receive the transmission signal from the pressure sensor (6) and control the movement of the cylinder (7) according to the transmission signal.

2. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 1, characterized in that: The clamping device (2) includes a hook (21) disposed on one side of the bottom of the base (1) and a locking cylinder (22) disposed on the other side of the bottom of the base (1).

3. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 2, characterized in that: A push-pull locking clamp (23) is provided on the other side of the bottom of the base (1).

4. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 2, characterized in that: The locking cylinder (22) is a three-axis cylinder.

5. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 2, characterized in that: The locking cylinder (22) is controlled by a PLC controller (8).

6. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 1, characterized in that: The lead screw (3) is provided with lead screw stroke adjustment bolts (31) at both ends.

7. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 1, characterized in that: The PLC controller (8) is equipped with a pressure regulating valve (81) for setting the maximum pressure value that the crossbeam contact block (5) can withstand.

8. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 1, characterized in that: The PLC controller (8) is equipped with an emergency stop switch (82) to control the cylinder (7) to exhaust air in an emergency, so that the crossbeam contact block (5) retracts.

9. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 1, characterized in that: The lead screw (3) is also provided with a limiting slider (9) to limit the position of the connecting rod (41).

10. The testing equipment for a passive obstacle detection device for rail transit vehicles according to claim 9, characterized in that: There are two limiting sliders (9), which are located on the left and right sides of the slider (4), respectively.

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