Test equipment for passive obstacle detection device of rail transit vehicle

Abstract

The invention discloses test equipment for a passive obstacle detection device of a rail transit vehicle, which comprises a base, a clamping device for clamping the base on a guide rail is arranged at the bottom of the base, a lead screw capable of moving left and right is connected in the base in a penetrating manner, a sliding block is arranged on the lead screw, and a clamping device is arranged on the sliding block. A sliding block is arranged on the base, a beam contact block is installed on the sliding block through a connecting rod, a pressure sensor is arranged on the connecting rod, an air cylinder is arranged on the base, a telescopic rod on the air cylinder is fixedly connected with the sliding block, and the air cylinder is controlled by a PLC. The PLC is used for receiving a transmission signal of the pressure sensor and controlling the air cylinder to move according to the transmission signal. The equipment can simulate an operation scene in which the passive obstacle detection device triggers the emergency stop of the vehicle when detecting that the cross beam collides with the obstacle during the operation of the vehicle in the garage, and ensures the convenience, safety, real-time performance, accuracy, flexibility and practicability of the passive obstacle detection device during testing.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of rail transit vehicle test equipment, in particular to a kind of rail transit vehicle passive obstacle detection device test equipment. BACKGROUND

[0002] Rail transit vehicle passive obstacle detection device as the important component of vehicle safe operation, it is mainly used to detect the various obstacles that can appear on track, such as stone, large foreign matter etc., to improve the safety and reliability of vehicle operation, vehicle passive obstacle detection device is composed of detection beam, passive obstacle detection travel switch, electric control box etc., passive obstacle detection travel switch is installed in detection beam, when vehicle is in the process of driving, the impact force generated when detection beam hits obstacle, such as stone, large foreign matter etc., will act on detection beam, so that passive obstacle detection travel switch is triggered, so that vehicle produces emergency braking and stops, avoid possible derailment, subversion and other serious accidents, threaten the life safety of passenger and normal operation of subway system.

[0003] Passive obstacle detection device can monitor track condition in real time when train is running, take braking and other measures in time when obstacle is detected, avoid the occurrence of accident or reduce the harm of accident. Passive obstacle detection device is the key component of vehicle driving safety, so passive obstacle detection device needs to be functionally tested, if test is not up to standard, passive obstacle detection device needs to be checked, to ensure the normal function of passive obstacle detection device and ensure the safe operation of vehicle.

[0004] Currently, passive obstacle detection device function test is mainly through manual pressure to detection beam, which cannot ensure the accuracy of pressure applied to detection beam, such as too large pressure, which will damage detection beam, otherwise, too small pressure applied to detection beam, vehicle triggers emergency braking, which cannot simulate real vehicle driving scene. Since this test method cannot guarantee the authenticity of vehicle operation scene test and is easy to damage detection beam, it cannot guarantee the convenience, real-time, accuracy, flexibility of passive obstacle detection device test, and the test method has safety hazards. SUMMARY

[0005] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application provides a kind of rail transit vehicle passive obstacle detection device test equipment.

[0006] The technical scheme adopted by the present application to solve the above technical problems is: a test equipment of a passive obstacle detection device of a rail transit vehicle, comprising a base, the bottom of the base is provided with a clamping device for clamping the base on a guide rail, a lead screw movable left and right is connected in the base, a sliding block is arranged on the lead screw, a cross beam contact block is installed on the sliding block through a connecting rod, a pressure sensor is arranged on the connecting rod, the base is provided with a pneumatic cylinder, a telescopic rod on the pneumatic cylinder is fixedly connected with the sliding block, the pneumatic cylinder is controlled by a PLC controller, and the PLC controller is used for receiving a transmission signal of the pressure sensor and controlling movement of the pneumatic cylinder according to the transmission signal.

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

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

[0009] According to some embodiments of the present application, the locking cylinder is a three-axis cylinder.

[0010] According to some embodiments of the present application, the locking cylinder is controlled by a PLC controller.

[0011] According to some embodiments of the present application, both ends of the lead screw are respectively provided with lead screw stroke adjusting bolts.

[0012] According to some embodiments of the present application, a pressure regulating valve is arranged on the PLC controller, which is used for setting the maximum pressure value borne by the cross beam contact block.

[0013] According to some embodiments of the present application, an emergency stop switch is arranged on the PLC controller, which is used for controlling the pneumatic cylinder to perform emergency exhaust, so that the cross beam contact block is retracted.

[0014] According to some embodiments of the present application, a limiting sliding block for limiting the control position of the connecting rod is further arranged on the lead screw.

[0015] According to some embodiments of the present application, the limiting sliding blocks are two, and are respectively located on the left and right sides of the sliding block.

[0016] The present application has at least the following beneficial effects: the present equipment can simulate the operation scene of the passive obstacle detection device detecting the cross beam hitting the obstacle to trigger the emergency stop of the vehicle when the vehicle is operating in the warehouse, and ensure the convenience, safety, real-time performance, accuracy, flexibility and practicality of the passive obstacle detection device test. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in combination with the drawings and embodiments, wherein:

[0018] Figure 1 is a structural schematic diagram of another direction of the present application;

[0019] Figure 2 is a structural schematic diagram of another direction of the present application;

[0020] Figure 3 is a structural schematic diagram of another direction of the present application;

[0021] Figure 4 is a structural schematic diagram of another direction of the present application; DETAILED DESCRIPTION

[0022] Embodiments of the present application are described in detail below with reference to the attached drawings, which show by way of example, embodiments in which the same or similar elements have the same or similar reference numbers and in which:

[0023] In the description of the present application, it needs to be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down and the like is based on the orientation or position relationship shown in the drawings, which is only for the purpose of facilitating the description of the present application and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0024] In the description of the present application, multiple refers to two or more. If there is a description of first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0025] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting and the like should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.

[0026] Reference Figure 1A kind of test equipment of passive obstacle detection device of rail transit vehicle, it includes base 1, the bottom of the base 1 is provided with clamping device 2 for clamping it on guide rail, threaded rod 3 that can be moved left and right is connected in the base 1, sliding block 4 is provided on the threaded rod 3, crossbeam contact block 5 is installed by connecting rod 41 of sliding block 4, pressure sensor 6 is provided on the connecting rod 41, the base 1 is provided with air cylinder 7, the telescopic rod 71 on the air cylinder 7 is fixedly connected with the sliding block 4, the air cylinder 7 is controlled by PLC controller 8, the PLC controller 8 is used to receive the transmission signal of the pressure sensor 6 and control the movement of the air cylinder 7 according to the transmission signal.

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

[0028] Referring to Figure 3 The telescopic movement of the telescopic rod 71 on the air cylinder 7 will drive the sliding block 4 to move forward and backward, while moving forward and backward, the threads on the sliding block 4 will drive the threaded rod to move forward and backward relative to the base 1, so as to realize the forward and backward movement of the crossbeam contact block 5 parallel to the steel rail 10. The threaded rod 3 is provided with a lead screw stroke adjusting bolt 31 at both ends. The movement of the crossbeam contact block 5 can be adjusted according to the movement of the lead screw stroke, generally, the movement of the crossbeam contact block 5 is adjusted to 0-100 mm.

[0029] The threaded rod 3 is also provided with limit sliding blocks 9 for limiting the position of the connecting rod 41, the limit sliding blocks 9 are two and located on the left and right sides of the sliding block 4. The limit sliding blocks 9 are "п" shaped, and the opening is provided with a movable bolt for limiting the connecting rod 41. When it is needed to turn the direction of the crossbeam contact block 5, the movable bolt can be loosened, the connecting rod 41 is turned 180 degrees together with the crossbeam contact block 5, and the connecting rod 41 is arranged in the limit sliding block 9 on the other side, which reflects the flexibility of the operation of the equipment.

[0030] Referring to Figure 4For the use state diagram of the present application, the present device is installed on one side of the steel rail 10, connected with the external air source through the on-off valve, and the external air source is usually the gas storage tank 11 in the carriage. The gas storage tank 11 inputs high-pressure gas to the locking cylinder 22 and the cylinder 7 through the on-off valve. The on-off valve adopts a hand slide valve, which is widely used in the field of pneumatic control due to its characteristics of simple operation, sensitive response and strong durability. The design of the hand slide valve allows the operator to open and close the valve through a simple sliding action, improving work efficiency.

[0031] The PLC controller 8 adopted by the present device is a PLC touch screen all-in-one machine, which is mainly used for the transmission and control of the gas circuit. The keys for pneumatic clamping and pneumatic loosening are arranged on the PLC touch screen. By operating the corresponding keys on the PLC touch screen, the locking cylinder 22 can be controlled to extend the air rod to the side of the steel rail 10, so as to fix the base 1 on the steel rail 10. Conversely, the locking cylinder 22 can be controlled to retract the air rod, so that the base 1 is separated from the steel rail 10.

[0032] The keys for advancing to the right and advancing to the left are also arranged on the PLC touch screen. The PLC controller 8 controls the cylinder 7 to act through the electromagnetic valve 13, so as to drive the lead screw 3 to rotate forward or reversely. The sliding block 4 is installed on the lead screw 3, and the sliding block 4 drives the cross beam contact block 5 to move rightward or leftward. When the cross beam contact block 5 contacts the passive obstacle detection device on the detection cross beam 12, the pressure sensor 6 will feedback the pressure applied to the detection cross beam 12 and display it on the PLC touch screen.

[0033] The PLC controller 8 is provided with a pressure regulating valve 81 for setting the maximum pressure value borne by the cross beam contact block 5. When the measured pressure = the set maximum pressure, the PLC controller 8 controls the cylinder 7 to exhaust, so as to retract the cross beam contact block 5 and prevent the detection cross beam 12 on the passive obstacle detection device from being damaged. The PLC controller 8 is provided with an emergency stop switch 82. The emergency stop button can also cut off the voltage of the electromagnetic valve 13, so as to make the cylinder 7 exhaust and retract the cross beam contact block 5, thereby preventing the cross beam on the passive obstacle detection device from being damaged.

[0034] The present device can simulate the operation scene of triggering the emergency stop of the vehicle when the passive obstacle detection device detects that the detection cross beam 12 collides with the obstacle during the simulation of the vehicle operation in the warehouse, so as to ensure the convenience, safety, real-time performance, accuracy, flexibility and practicality of the passive obstacle detection device during the test.

[0035] The above describes the preferred embodiments of the present application in detail. It should be understood that those skilled in the art can make many modifications and changes without creative labor based on the concept of the present application. Therefore, any technical solution obtained by logical analysis, reasoning or limited experiment based on the prior art according to the concept of the present application shall be within the protection scope determined by the claims.

Claims

1. A test device for a passive obstacle detection device for a rail transit vehicle, characterized by: The invention comprises a base (1), wherein a clamping device (2) for clamping the base (1) on a guide rail is provided at the bottom thereof, a screw rod (3) movable leftward and rightward is passed through the base (1), a slider (4) is provided on the screw rod (3), a crossbeam contact block (5) is installed on the slider (4) via a connecting rod (41), a pressure sensor (6) is provided on the connecting rod (41), a cylinder (7) is provided 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), and the PLC controller (8) is used to receive a transmission signal from the pressure sensor (6) and control the movement of the cylinder (7) according to the transmission signal.

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

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

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

6. The test equipment for a rail transit vehicle passive obstacle detection device according to claim 1, characterized in that: Both ends of the screw rod (3) are respectively provided with screw rod stroke adjustment bolts (31).

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

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

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

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

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