Device for detecting motion performance of carbon sliding shoe of cylinder type current collector

Abstract

The utility model provides a cylinder type current collector carbon sliding shoe motion performance detection device, which comprises a detection device main body, a fixed pore plate, a back plate, a reversing sliding valve, an air inlet pipe, a descending air pipe and an ascending air pipe, and is characterized in that a base of the detection device main body is a square frame, and a door-shaped frame is vertically arranged above the middle parts of the two side edges of the base; the upper portions of the two sides of the door-shaped frame are fixedly connected with back plates used for fixing bolts of the current collector, M10 installation bolts are welded to the upper sides of the back plates, M10 nuts are welded to the back faces of the lower sides of the back plates, and the distance size of the bolts is consistent with the size of an adjusting toothed plate of the current collector. A three-position four-way manual reversing slide valve is installed at the upper end of the device body frame, an air inlet pipe is installed on the reversing slide valve, and a carbon sliding shoe air cylinder ascending air pipe and a carbon sliding shoe air cylinder descending air pipe are installed on the lower portion of the reversing slide valve. By using the detection device provided by the utility model, the replaced current collector can be detected at any time, and a defective part can be found out and replaced.

Description

Technical Field

[0001] This utility model belongs to the field of rail vehicle manufacturing technology, and in particular relates to a device for testing the motion performance of a cylinder-type current collector carbon skid. Background Technology

[0002] Subway cars receive power through contact between carbon slippers and the electrified third rails. The power supply voltage is generally DC 750V, and the operating speed is generally 80km / h. Current collectors are divided into mechanical lower current collectors and mechanical upper current collectors. The current collectors have return and locking functions. The locking function is to ensure that a defective current collector disengages from the third rail, thus guaranteeing one round trip of the vehicle. All current collectors are mounted on the side frame of the bogie. Each current collector has a mechanism consisting of two springs and two elastic bearings to ensure that the pressure between the current collector and the third rail remains constant even after the carbon slipper wears. Each current collector is equipped with a cylinder. The cylinder's air supply and exhaust are controlled by the energization and de-energization of a solenoid valve, thereby driving the raising and lowering of the carbon slipper to achieve centralized current collection or centralized slipper removal. Each subway train is equipped with the same number of current collectors, which are classified into Type A and Type B current collectors according to their installation location. The definitions and functions of the two types of current collectors are completely identical.

[0003] The current collector is a crucial component in the current receiving system of subway and light rail vehicles and requires regular inspection to ensure normal power supply performance. Currently, subway vehicle maintenance sites often lack the corresponding testing equipment, which poses challenges to testing the carbon slipper's operational performance, adjusting its height, and repairing or replacing faulty components, resulting in the following problems.

[0004] (1) The problem of long vehicle operation time and lane occupation during on-site vehicle inspection.

[0005] Since there were no suitable testing devices on site, dimensional tests and checks on the carbon slipper operation of the current collector could only be performed on the vehicle. The current collector's rising and falling solenoid valves were energized and de-energized via switches in the driver's cab, controlling the cylinder's air supply and exhaust, which in turn actuated the carbon slipper to achieve centralized slipper release or centralized current collection. Because the vehicle was stopped in the designated lane during testing and could not operate, the testing and maintenance process was lengthy, thus occupying both vehicle operating time and vehicle maintenance space resources.

[0006] (2) The problem of low efficiency in previous on-site vehicle inspections

[0007] Previously, due to the lack of corresponding testing equipment, the operation testing of cylinder-type current collectors could only be carried out on the vehicle itself. Furthermore, the current collectors are mounted on the bogies, a low position, requiring additional tools such as rulers and measuring tapes for height measurement, thus increasing workload. Generally, the working height of the carbon slipper of a current collector at the bottom of a three-rail system is 200±5mm, and its free height is approximately 273mm. When the measured carbon slipper height does not meet the standard requirements, the limiting steel pins and rubber-headed limiting pins need to be adjusted. Moreover, the height of the carbon slipper needs to be retested after adjustment. In the actual environment of current vehicles, due to installation location and space limitations, adjustment and measurement are not easy. Furthermore, a walkie-talkie is required to communicate with the driver's cab personnel for operation. These numerous steps lead to low work efficiency, unintuitive testing, and operational safety risks due to communication misunderstandings.

[0008] (3) The problem of significant economic waste during previous on-site vehicle inspections.

[0009] The contact pressure between the current collector and the three rails is achieved through the springs and rubber elastic bearings in the mechanical part of the current collector shoe. Considering factors such as three-rail installation and vehicle vibration, the design uses rubber elastic bearings to ensure that the current collector shoe maintains a constant contact pressure on the three rails within a certain fluctuation range. The standard static contact pressure is generally 120N, and the static pressure adjustment range is 120N±24N. Every time the vehicle passes through the three-rail section, the current collector shoe, springs, and related mechanisms will move, making them the most frequently moving components during vehicle operation. After a period of operation, problems such as jamming of the current collector carbon slipper's lifting and lowering action and pressure values ​​exceeding the standard may occur. It is necessary to find the cause of the problem and replace the problematic components, such as cylinders, springs, and bearings. After replacing the components, it is necessary to readjust the relevant components and the height of the carbon slipper, and test again. Under the actual environmental conditions of the current vehicle, this is not easy to implement and observe. Using the vehicle's air supply system to test the problematic components would also prolong the vehicle maintenance time. Utility Model Content

[0010] This utility model aims to solve the problems of the lack of a corresponding testing device for the action performance of carbon slippers in cylinder-type current collectors, the long vehicle operation time and lane occupation during on-site vehicle testing, low testing efficiency and large economic waste. Therefore, it provides a testing device for the action performance of carbon slippers in cylinder-type current collectors, which is convenient for testing, greatly improves the testing quality of current collectors, shortens the testing time, and effectively ensures the smooth and safe current collection performance of vehicles.

[0011] To achieve the above-mentioned utility model objectives, this utility model provides a device for testing the action performance of a cylinder-type current receiver carbon slipper, comprising a main body of the testing device, a fixed perforated plate, a back plate, a reversing slide valve, an air inlet pipe, a downflow pipe, and an upflow pipe. The main body of the testing device has a square frame base, with a portal frame vertically installed above the middle of both sides of the base. A back plate for bolt fixing of the current receiver is fixedly connected to the upper part of both sides of the portal frame. M10 mounting bolts are welded to the upper side of the back plate, and M10 nuts are welded to the lower back side of the back plate. The bolt spacing is consistent with the size of the current receiver adjusting tooth plate. A three-position four-way manual reversing slide valve is installed at the upper end of the main body frame of the device. An air inlet pipe is installed on top, and a carbon slipper cylinder riser pipe and a fallr pipe are installed at the bottom of the reversing slide valve. The reversing slide valve has a fallr exhaust port and a riser exhaust port on top. The reversing slide valve is equipped with a control handle, a clockwise limit stop, and a counterclockwise limit stop. When the control handle is rotated clockwise to the clockwise limit stop, the air inlet pipe is connected to the riser pipe of the flow-receiving shoe cylinder. When the control handle is rotated counterclockwise to the counterclockwise limit stop, the air inlet pipe is connected to the fallr pipe of the flow-receiving shoe cylinder. When the control handle is rotated to the middle position of the left and right stops, the riser pipe and the fallr pipe are simultaneously connected to the atmosphere through the exhaust port on the slide valve, and the air inlet pipe is closed.

[0012] Furthermore, four fixing plates are welded to the four corners of the main body base of the device, and fixing holes are provided on the fixing plates.

[0013] Furthermore, one end of the air inlet pipe is installed on the reversing slide valve, and the other end is installed with a quick connector; one end of the rising air pipe and the falling air pipe are installed at the lower part of the reversing slide valve, and the other end is installed with a standard connector for connecting to the carbon slipper cylinder.

[0014] This utility model has the following advantages:

[0015] (1) The main body of the device is welded from 35mm×35mm metal square tubes. The height and width of the main frame are designed according to the installation size of the current receiver to ensure sufficient mechanical strength while supporting the component to be tested.

[0016] (2) This device can improve maintenance efficiency. Under the actual environmental conditions of the vehicle, due to the limitations of installation location and space, it is not easy to adjust and measure. Moreover, it requires the use of a wireless walkie-talkie to contact the driver's cab personnel for operation. The many steps lead to problems such as low work efficiency and unintuitive detection. In addition, there are operational safety risks caused by communication misunderstandings. With this detection device, one person can operate it, with fewer steps and higher efficiency.

[0017] (3) It solves the problem of large economic waste during the previous on-site vehicle inspection. Using this inspection device, the replaced current receiver can be inspected at any time, the problematic parts can be replaced, and the unproblematic parts can be left for continued use. This achieves component inspection, i.e., precise maintenance, and avoids the problem of large economic waste caused by overall replacement. It improves the quality and efficiency of maintenance and effectively ensures the smooth and safe current receiving performance of the vehicle.

[0018] (4) This solves the problem of long vehicle operating time and lane occupation during on-site vehicle testing. Because vehicles cannot operate while stopped in designated lanes during testing, the testing and repair time is long, which occupies both vehicle operating time and scarce vehicle repair space resources. If the current collector carbon slipper action performance testing device is used, the faulty current collector can be directly replaced and tested and repaired on the device, thus avoiding the occupation of vehicle operating time and repair space resources. Attached Figure Description

[0019] Figure 1 This is a front view of the cylinder-type current collector carbon slipper action performance testing device of this utility model;

[0020] Figure 2 This is a side view of the cylinder-type current collector carbon slipper action performance testing device of this utility model;

[0021] Figure 3 This is a top view of the cylinder-type current collector carbon slipper action performance testing device of this utility model;

[0022] The components include: 1. Detection device body; 2. Fixing orifice plate; 3. Back plate; 4. Reversing slide valve; 5. Air inlet pipe; 6. Downward air duct; 7. Upward air duct; 2.1 Fixing hole; 3.1 M10 nut; 3.2 Mounting bolt; 4.1 Downward air duct exhaust hole; 4.2 Upward air duct exhaust hole; 4.3 Operating handle; 4.4 Clockwise limit stop; 4.5 Counterclockwise limit stop. Detailed Implementation

[0023] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed description of the carbon skid performance testing device for a cylinder-type current collector.

[0024] like Figure 1 , 2The main body 1 of the cylinder-type current receiver carbon slipper action performance testing device shown is constructed from 35mm×35mm metal square tubing. The height and width of the main frame are designed according to the current receiver's installation dimensions, ensuring sufficient mechanical strength while supporting the component under test. Four fixing plates 2 are welded to the four corners of the base of the main body 1. Fixing holes 2.1 are present on the fixing plates 2.1, allowing for easy fixing of the frame to a suitable workbench using M8 nuts. A current receiver bolt fixing back plate 3 is welded to the frame of the main body 1. M10 mounting bolts 3.2 are welded to the upper side of the back plate 3, with a bolt hole spacing of 24.5cm. M10 nuts 3.1 are welded to the lower back of the back plate 3, with the bolt spacing matching the current receiver adjustment tooth plate dimensions. During operation, the two upper bolts remain stationary, facilitating direct hanging of the current receiver during installation before tightening with the lower screws. This allows for operation by a single person, reducing labor intensity during current receiver installation. A three-position four-way manual directional valve 4 is installed at the upper end of the main body 1 frame. The reversing slide valve 4 is welded to the crossbeam of the main frame. The reversing slide valve 4 is welded with an operating handle 4.3, a clockwise limit stop 4.4, and a counterclockwise limit stop 4.5. The reversing slide valve 4 has a downdraft exhaust port 4.1 and a riser exhaust port 4.2, with an exhaust port diameter of 2mm. Figure 2 As shown. An air inlet pipe 5 is installed on the reversing slide valve 4. A duct clamp is installed on the air inlet pipe 5, and a quick connector is installed at the other end of the air inlet pipe 5 for easy connection to an air source. A carbon slipper cylinder rising air pipe 7 and a falling air pipe 6 are installed at the lower part of the reversing slide valve 4. A standard connector for connecting to the carbon slipper cylinder is installed on the rising air pipe 7. A standard connector for connecting to the carbon slipper cylinder is installed on the falling air pipe 6. The component to be tested 9 is installed on bolt 3.2 and tightened with a fastening nut. A screw is used to fix it in screw hole 3.1, connecting the rising air pipe 7 and the falling air pipe 6.

[0025] The present invention includes the following steps in its specific use:

[0026] Step 1, Fix the current receiver: such as Figure 1 As shown, first hang the main body of the current receiver on the mounting bolt 3.2. This can reduce the labor intensity and can be done by one person. Then tighten it with a nut, and then fix it with a screw in the screw hole 3.1.

[0027] Step 2, Connect the air duct: such as Figure 1 As shown, the cylinder-type air receiver carbon slipper connects the rising air duct 7 and the falling air duct 6. It is connected to the air source duct in the factory building through the air inlet duct 5.

[0028] Step 3: Adjust the air pressure: Turn on the air source duct switch and adjust the air pressure to the specified air pressure of 6 Bar required by the receiver to prepare for the next step of the receiver cylinder experiment.

[0029] Step 4: Manual inspection: Manually check whether the current receiving shoe and spring and other components move up and down normally, and then manually remove the shoe using the insulated handle to check whether each component is normal.

[0030] Step 5, Pneumatic Check: After manual inspection, operate the reversing slide valve control handle 4.3 to charge and exhaust air. When the control handle 4.3 is rotated clockwise to the limit stop 4.4, the air inlet pipe 5 connects to the rising air pipe 7 of the receiving shoe cylinder. When the control handle 4.3 is rotated counterclockwise to the limit stop 4.5, the air inlet pipe 5 connects to the descending air pipe 6 of the receiving shoe cylinder. When the control handle 4.3 is rotated to the middle position of the left and right stops, the rising air pipe 7 and the descending air pipe 6 simultaneously connect to the atmosphere through the exhaust port on the slide valve, and the air inlet pipe 5 closes. During the pneumatic check, perform the pneumatic shoe removal and reset operation of the receiving device to check whether the moving parts, carbon slide shoe, and cylinder movement are stuck or abnormal when the upper and lower air ports of the cylinder are charged and ventilated respectively.

[0031] Step 6: Replace the faulty part and test again: Replace the faulty part in time when the problem is found, and test again after replacement.

Claims

1. A device for testing the action performance of a cylinder-type current collector carbon slipper, characterized in that: The device comprises a detection device body (1), a fixed hole plate (2), a back plate (3), a reversing slide valve (4), an air inlet pipe (5), a descending air pipe (6) and an ascending air pipe (7). The base of the detection device body (1) is a square frame, door-shaped frames are vertically arranged on the middle of the two sides of the base, the back plate (3) is fixedly connected to the upper part of the two sides of the door-shaped frames for bolt fixing of a current collector, M10 mounting bolts (3.2) are welded on the upper side of the back plate (3), M10 nuts (3.1) are welded on the lower side of the back plate (3), the bolt distance size is consistent with the size of the current collector adjustment tooth plate; a three-position four-way manual reversing slide valve (4) is installed on the upper end of the frame of the device body (1), the air inlet pipe (5) is installed on the upper surface of the reversing slide valve (4), the carbon shoe cylinder ascending air pipe (7) and the descending air pipe (6) are installed on the lower part of the reversing slide valve (4); the reversing slide valve (4) is provided with a descending air pipe exhaust hole (4.1) and an ascending air pipe exhaust hole (4.2), the reversing slide valve (4) is provided with a control handle (4.3), a clockwise limiting stop (4.4) and an anticlockwise limiting stop (4.5), when the control handle (4.3) is rotated clockwise to the clockwise limiting stop (4.4), the air inlet pipe (5) is connected with the current collector shoe cylinder ascending air pipe (7); when the control handle (4.3) is rotated anticlockwise to the anticlockwise limiting stop (4.5), the air inlet pipe (5) is connected with the current collector shoe cylinder descending air pipe (6); when the control handle (4.3) is rotated to the middle position of the left and right stops, the ascending air pipe (7) and the descending air pipe (6) are simultaneously connected with the atmosphere through the exhaust holes on the upper surface of the slide valve, and the air inlet pipe (5) is closed.

2. The device for detecting the action performance of the carbon shoe of the air cylinder current collector according to claim 1, characterized in that: Four fixed hole plates (2) are welded on the four corners of the base of the device body (1), and fixed holes (2.1) are arranged on the fixed hole plates (2).

3. The device for detecting the action performance of the carbon shoe of the air cylinder current collector according to claim 1, characterized in that: One end of the air inlet pipe (5) is installed on the upper surface of the reversing slide valve (4), and the other end is installed with a quick connector; one end of the ascending air pipe (7) and the descending air pipe (6) is installed on the lower part of the reversing slide valve (4), and the other end is installed with a standard connector connected with the carbon shoe cylinder.

Images