WO2020224661A1 - 检测闸片、制动夹钳单元故障检测装置及检测方法 - Google Patents

检测闸片、制动夹钳单元故障检测装置及检测方法 Download PDF

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Publication number
WO2020224661A1
WO2020224661A1 PCT/CN2020/092875 CN2020092875W WO2020224661A1 WO 2020224661 A1 WO2020224661 A1 WO 2020224661A1 CN 2020092875 W CN2020092875 W CN 2020092875W WO 2020224661 A1 WO2020224661 A1 WO 2020224661A1
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WIPO (PCT)
Prior art keywords
brake
pressure
detection
cylinder chamber
caliper unit
Prior art date
Application number
PCT/CN2020/092875
Other languages
English (en)
French (fr)
Inventor
孔军
黄士伟
徐少亭
张昕
王飞
覃立伟
宋传云
张方亮
王震
Original Assignee
中车青岛四方车辆研究所有限公司
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Publication of WO2020224661A1 publication Critical patent/WO2020224661A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18Safety devices; Monitoring
    • B60T17/22Devices for monitoring or checking brake systems; Signal devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T17/00Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/18Safety devices; Monitoring
    • B60T17/22Devices for monitoring or checking brake systems; Signal devices
    • B60T17/221Procedure or apparatus for checking or keeping in a correct functioning condition of brake systems

Definitions

  • the application belongs to the technical field of vehicle brake failure detection, and in particular relates to a detection device and a detection method for detecting brake pads and brake caliper unit failures.
  • the brake caliper unit, the brake disc and the brake pads together constitute the basic braking device of the rolling stock.
  • keeping the gap between the brake pads and the brake discs stable is a necessary condition to ensure the reliable braking performance of the rolling stock and the normal wear of the brake discs and brake pads.
  • the braking sensitivity, relief clearance and one-time adjustment of the unit are important indicators that determine the stability of the gap between the brake pads and the brake disc. Therefore, before the brake caliper unit is installed, it runs to a certain mileage. And when a brake failure occurs, the above performance parameters need to be tested to assess whether the brake caliper unit meets the requirements for use.
  • the United States invention US6357291B1 discloses a brake deviation measuring device, which includes a load measuring mechanism for testing the load applied by the brake caliper piston to the brake disc for measuring brake deviation.
  • the brake deviation measuring device can be used to measure the deviation between the braking force distributed by the brake system on different wheels through the brake line , But does not involve the measurement of brake clearance.
  • This application provides a detection brake pad for fault detection of a vehicle braking device.
  • the detection brake pad for fault detection of a vehicle braking device.
  • the brake disc body which has:
  • a pressure detecting part, the pressure detecting part can be sealed and plugged into the pressure detecting element
  • a support cylinder chamber, the support cylinder chamber is formed in the brake shoe body, and the support cylinder chamber is provided corresponding to the pressure detection part;
  • a piston, the piston is sealed in the support cylinder chamber
  • extension piece is fixedly connected with the piston
  • the supporting cylinder chamber has:
  • Entrance and exit, the entrance and exit and the second mounting part are respectively located on both sides of the brake disc body;
  • the pressure input port is used to introduce fluid pressure into the support cylinder chamber to provide power for the piston to move toward the inlet and outlet;
  • the protruding piece is arranged corresponding to the inlet and outlet, and the protruding piece contacts the brake disc under the driving of the piston.
  • it further includes an air containing chamber formed in the brake disc body.
  • the air-containing chamber is formed on the outside of the supporting cylinder chamber, and the air-containing chamber extends along the outer circumferential direction of the supporting chamber;
  • the air containing chamber has an air outlet and an air inlet, the air outlet communicates with the pressure input port, and the air inlet communicates with the outside of the brake disc body.
  • the pressure detection part is a sensor interface
  • the air inlet is in communication with the sensor interface
  • external fluid enters the interior of the brake body through the sensor interface, and then enters the container through the air inlet.
  • the inside of the air chamber then enters the inside of the supporting cylinder chamber through the air outlet and the pressure input port.
  • multiple support cylinder chambers there are multiple support cylinder chambers, multiple support cylinder chambers are distributed at intervals, there are multiple pistons, and multiple pistons and multiple support cylinder chambers are arranged in one-to-one correspondence.
  • the present application also provides a brake caliper unit failure detection device.
  • the brake caliper unit includes a brake pad holder, and the brake caliper unit failure detection device includes:
  • the second installation part of the detection brake disc is fixedly connected with the first installation part formed by the brake disc holder;
  • a pressure detecting element is connected to the pressure detecting part, and the pressure detecting element is arranged corresponding to the supporting cylinder chamber;
  • a signal receiving unit the signal receiving unit is in communication connection with the pressure detecting element.
  • the pressure detecting element is fixedly connected to the brake disc body, and the signal receiving unit includes:
  • a signal conversion box the signal conversion box is fixedly connected with the brake disc body, and the signal conversion box is communicatively connected with the pressure detection element;
  • the mobile client is wirelessly connected to the signal conversion box.
  • the brake caliper unit further includes a brake cylinder, the brake cylinder is connected to the brake pad holder, and the brake cylinder has an air inlet, characterized in that the brake caliper unit failure detection device further includes:
  • a brake control mechanism the brake control mechanism is connected to a brake cylinder, and the brake control mechanism includes:
  • a relay valve the relay valve having an inlet end, a control end and an outlet end, and the inlet end is connected to the air source interface;
  • An air pressure control unit which is connected to the control terminal
  • the brake cylinder interface is connected to the air outlet, and the brake cylinder interface is connected to the air inlet of the brake cylinder.
  • the present application also provides a method for detecting a failure of a brake caliper unit, using the aforementioned device for detecting a failure of the brake caliper unit, and the method for detecting a failure of the brake caliper unit includes the following steps:
  • the gas pressure detected from the pressure detecting part is P 1 ;
  • the brake caliper unit fault detection method further includes the following steps:
  • the gas pressure detected from the pressure detecting part is P 2 ;
  • the brake caliper unit fault detection method further includes the following steps:
  • the pressure detecting section detects from the gas pressure P 3 based on the brake caliper unit to repeatedly charge, discharge, until in the inflated state to the caliper means and exhaust from the The gas pressure detected by the pressure detection unit no longer changes.
  • the gas pressure detected by the pressure detection unit is P m , which is set to
  • the gas pressure detected from the pressure detection unit is P n , and the relief gap of the brake caliper unit is set to c, then:
  • a detection brake pad is provided, and the detection brake pad has a supporting cylinder chamber, a piston, and an extension piece.
  • the detection brake pad can replace the brake brake of the vehicle brake device
  • the piece is fixedly connected with the power actuator.
  • the extension piece when the extension piece is in contact with the brake disc, it can be reflected (or converted) by detecting the pressure in the supporting cylinder chamber corresponding to the extension piece under different movement displacements. The movement and displacement of the extension piece can then accurately obtain the performance parameters of the power actuator's braking sensitivity, one-time adjustment and clearance relief.
  • Fig. 1 is a schematic structural diagram of a brake caliper unit according to an embodiment
  • FIG. 2 is a partial structural diagram 1 of a brake caliper unit failure detection device according to an embodiment
  • FIG. 3 is a schematic diagram 2 of a partial structure of a brake caliper unit failure detection device according to an embodiment
  • FIG. 4 is a schematic structural diagram of a detection brake disc according to an embodiment, wherein the detection brake disc is equipped with a signal receiving unit and a pressure detection element;
  • Figure 5 is a side view of the detection brake plate in Figure 4.
  • Figure 6 is a cross-sectional view of the detection brake plate in Figure 5 along the A-A direction;
  • FIG. 7 is a schematic structural diagram of a brake control mechanism of a brake caliper unit failure detection device according to an embodiment
  • FIG. 8 is a schematic diagram showing the connection relationship between the brake control mechanism and the brake caliper unit in FIG. 7;
  • FIG. 9 is a schematic diagram of the principle of detecting the braking sensitivity of the brake caliper unit by the brake caliper unit failure detection device of this application;
  • FIG. 10 is a schematic diagram of the principle of detecting the primary adjustment amount of the brake caliper unit by the brake caliper unit failure detection device of an embodiment
  • 11 is a schematic diagram of the principle of detecting the relief gap of the brake caliper unit by the brake caliper unit failure detection device of an embodiment
  • brake pad composition Number in the figure: 10, brake pad composition; 101, first installation part; 11, brake pad; 12, brake cylinder; 1, detection brake pad; 100, brake pad body; 110, second installation part; 120.
  • Air pressure control unit 431, Inflatable solenoid valve; 432, Exhaust solenoid valve; 433, Second pressure detection Components; 44. Brake cylinder interface; 45. Exhaust plug door on the side with electric contacts; 46. The third pressure detection component.
  • first and second are only used for description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.
  • the features defined with “first” and “second” may explicitly or implicitly include one or more of these features.
  • connection and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral Ground connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • connection should be understood in specific situations.
  • this application provides a detection brake pad
  • the detection brake pad is used for fault detection of the vehicle brake device
  • the brake pad body of the detection brake pad is arranged corresponding to the power actuator of the vehicle brake device
  • the detection brake pad has a supporting cylinder chamber, a piston and an extension piece
  • the extension piece when it is in contact with the brake disc, it can pass the detection extension
  • the pressure in the supporting cylinder chamber corresponding to the different movement displacements of the parts can reflect (or convert) the movement displacement of the protruding parts, and then accurately obtain the braking sensitivity, one-time adjustment amount and relief clearance of the power actuator
  • there is no need to remove the power actuator and there is no need to use the test bench to perform fault detection on the power actuator, thereby ensuring the authenticity of the detection environment and improving the accuracy of the detection results.
  • the present application also provides a brake caliper unit failure detection device that uses the detection brake pad to detect the failure of the brake caliper unit, and the brake caliper unit failure detection device is used to detect the brake caliper unit.
  • the detection method for fault detection of the caliper unit can still achieve accurate detection of the brake caliper unit without disassembling the brake caliper unit, thereby improving the accuracy of the detection result.
  • the present application proposes a brake caliper unit failure detection device, which is used for fault detection of the brake caliper unit.
  • the brake caliper unit includes a brake pad assembly 10 and a brake cylinder 12.
  • the brake cylinder 12 is connected to the brake pad assembly 10 to drive The brake pad support assembly 10 moves.
  • the brake pad support assembly 10 has a first mounting portion 101 for connecting with the brake pad 11.
  • the brake caliper unit failure detection device includes a detection brake pad 1, a second A pressure detecting element 2 and a signal receiving unit 3.
  • the detecting brake pad 1 includes a brake pad body 100, a supporting cylinder chamber 200, a piston 300 and an extension member 400, among which:
  • the brake pad body 100 has a second mounting portion 110 and a pressure detecting portion 120.
  • the structure of the second mounting portion 110 is adapted to the first mounting portion 101, so that the first mounting portion 101 can be fixedly connected to the second mounting portion 110, namely When it is necessary to perform fault detection on the brake caliper unit, the detection brake lining 1 replaces the brake lining 11, and then the first mounting part 101 formed by the second mounting part 110 and the brake lining holder is fixedly connected.
  • the connection relationship between the second mounting portion 110 and the first mounting portion 101 is the same as the connection relationship between the brake pad 11 and the brake pad assembly 10, that is, the connection relationship between the brake pad 1 and the brake pad assembly 10 is detected, It is the same as the connection relationship between the brake pad 11 and the brake pad support assembly 10.
  • the extension piece 400 is fixedly connected to the piston 300, and the extension piece 400 may also be a part of the piston 300, and the two are integrally formed.
  • the pressure detection unit 120 is used to set or connect a pressure detection element (or a pressure detection instrument, for example, a pressure detection element, etc.) to provide conditions for detecting the internal pressure of the support cylinder chamber 200. Therefore, as long as the detection brake plate 1 has a detection support cylinder chamber The ability of the internal pressure of 200, that is, the ability to be combined with the pressure detecting element to detect the pressure inside the supporting cylinder chamber 200, it can be determined that the brake pad body 100 has the pressure detecting part 120.
  • the brake pad body 100 is integrally formed.
  • the brake pad body 100 is integrally formed by precision casting and then finished by finishing, as shown in FIGS. 4 and 5,
  • the second mounting portion 110 is a dovetail structure mounted on the back of the brake pad body 100 (that is, after the detection brake pad 1 is installed on the brake pad assembly 10, the second mounting portion 110 is located on the side close to the brake pad assembly 10).
  • the first mounting part 101 composed of the brake pad holder has a first interface
  • the second mounting part 110 has a second interface.
  • the second interface is set up with the brake pad, that is, the second interface is set to be connected to the brake pad 11
  • the connecting interfaces of the brake shoe holder assembly 10 are the same, and the second interface is adapted to the first interface to be fixedly connected to the first interface.
  • the pressure detecting part 120 is preferably a sensor interface for sealingly plug-in connection with the pressure detecting element.
  • the pressure detection part can also be a pressure detection surface.
  • the pressure detection surface and the support cylinder chamber are also hermetically connected.
  • the pressure change inside the support cylinder chamber can cause certain parameters of the pressure detection surface to change, such as mechanical deformation, resistance changes, and the pressure detection surface.
  • the connected pressure detection element can detect this parameter change and convert it into a pressure change.
  • the supporting cylinder chamber 200 is formed in the brake pad body 100, and the supporting cylinder chamber 200 is arranged corresponding to the pressure detecting part 120, so that the pressure inside the supporting cylinder chamber 200 can be detected when the pressure detecting part 120 is provided with or connected with a pressure detecting element .
  • the internal structure of the supporting cylinder chamber 200 may refer to the cylinder chamber, or refer to other chamber structures provided in the cylinder chamber, for example, a cylindrical chamber, a prismatic chamber, and the like.
  • the support cylinder chamber 200 has a pressure input port 210 and an inlet and outlet 220.
  • the pressure input port 210 is used to introduce fluid pressure into the support cylinder chamber 200 for the extension of the piston 300 (that is, toward Import and export 220 movement) to provide power.
  • the pressure input port can fill the support cylinder chamber with a certain pre-pressure, so that the extension piece extends out of the inlet and outlet, and then contacts the brake disc, so that the detection brake 1 enters and maintains the initial detection state , So that the protruding piece can be pressed back into the support cylinder chamber in the subsequent inspection process.
  • Fluid is a substance that can flow. It is a general term for liquid and gas. Fluid has a certain degree of compressibility.
  • the inlet and outlet 220 are perpendicular to the brake disc body 100, and the extension member 400 can reciprocate within the inlet and outlet 220 under the drive of the piston 300.
  • the pressure input port 210 is a pneumatic input port, which can be used to introduce gas into the support cylinder chamber 200 and then pass through The air pressure drives the piston 300 to extend.
  • the supporting cylinder chamber 200 is a chamber with gas.
  • the inlet and outlet 220 and the second mounting portion 110 are respectively located on both sides of the brake disc body 100 to detect when the brake disc 1 is connected to the gate.
  • the second mounting part 110 is fixedly connected to the first mounting part 101, and the inlet and outlet 220 faces the brake disc (or the inlet and outlet 220 faces the brake disc holder assembly 10), so that the extension piece 400 is in contact with the brake disc under the driving of the piston 300.
  • the pressure input port 210 is a hydraulic input port, which can be used to introduce liquid into the support cylinder chamber 200 and then pass through The hydraulic pressure drives the piston 300 to extend. Since the compressibility of liquid is relatively small, gas is generally used as the medium for forming fluid pressure. The following description mainly uses gas as the fluid that provides pre-pressure for supporting the cylinder chamber. Of course, liquid can also be used when the compression of the original fluid is relatively small.
  • a sealed space with a certain pre-pressure is formed.
  • the amount of fluid in the sealed space is constant.
  • the brake pads are detected to move close to the brake disc, and the piston is squeezed into the support cylinder chamber by the brake disc.
  • the internal movement reduces the volume of the sealed space and changes the pressure of the sealed space. Since the amount of fluid in the sealed space is constant, the displacement of the piston can be calculated according to the change of the pressure in the sealed space, and then the displacement of the protrusion can be obtained.
  • the displacement of the protrusion can be used to calculate the performance parameters of the brake caliper unit.
  • the supporting cylinder chamber 200 is formed by the hollow cylindrical cylinder sleeve of the brake disc body 100, and the supporting cylinder chamber 200 is cylindrical.
  • the pressure detection unit 120 is a sensor interface
  • the pressure can be input to the support cylinder chamber 200 through the sensor interface.
  • a check valve connected to the support cylinder chamber 200 can be provided at the sensor interface to allow only fluid to be input into the support cylinder chamber 200 , And the fluid in the supporting cylinder chamber 200 is not allowed to be outputted outwards.
  • the pressure detecting part 120 has the functions of a pre-inflation and pressure test interface.
  • the pressure input port 210 of the supporting cylinder chamber 200 may be a groove opening in the brake disc body 100, and the groove opening is in a strip shape.
  • the groove opening extends from the inside of the supporting cylinder chamber 200 to the outside of the hollow cylindrical cylinder liner until it communicates with the pressure detecting part.
  • the pressure detecting part 120 is a sensor interface
  • the notch port is in communication with the sensor port.
  • the detection brake pad 1 further includes an air-containing chamber 500, which is formed in the brake pad body 100 .
  • the air containing chamber 500 is preferably formed outside the supporting cylinder chamber 200, and the air containing chamber 500 extends along the outer circumferential direction of the supporting chamber 200.
  • the air-containing chamber 500 has an air outlet 510 and an air inlet 520, and the air outlet 510 is in communication with the pressure input port 210, thereby connecting the supporting cylinder chamber 200 and the air-containing chamber 500.
  • the air inlet 520 communicates with the outside of the brake pad body 100. In the embodiment shown in FIGS. 3 and 6, the air inlet 520 communicates with the sensor interface. Before the test, the external fluid enters the brake pad body 100 through the sensor interface.
  • the air inlet 520 and the sensor interface may also be the same, that is, the gas providing the pre-pressure directly enters the container chamber 500 through the sensor interface.
  • the piston 300 is sealed and sleeved inside the support cylinder chamber 200 to move along the support cylinder chamber 200 when receiving the pressure of the fluid entering the support cylinder chamber 200 from the pressure input port 210.
  • the piston 300 is in sliding fit with the supporting cylinder chamber 200.
  • the piston 300 has a piston body 310 and a sealing ring 320.
  • the piston body 310 is cylindrical as a whole, and the outer wall of the piston body 310 is provided with An annular groove, the sealing ring 320 is sleeved in the annular groove, and the outer side of the sealing ring 320 is in contact with the supporting cylinder chamber 200.
  • the sealing ring 320 is preferably a K-ring.
  • a stop ring 330 is provided at the inlet and outlet 220 of the support cylinder chamber 200.
  • the stop ring 330 is opened at the entrance and exit 220 of the support cylinder chamber 200.
  • the inner diameter of the stop ring 330 is smaller than the outer diameter of the piston 300, so that the piston 300 can be restricted from moving in the supporting cylinder chamber 200.
  • the extension member 400 is fixedly connected with the piston 300 to move synchronously with the piston 300 along the supporting cylinder chamber 200.
  • the extension member 400 is arranged corresponding to the inlet and outlet 220 of the support cylinder chamber 200.
  • the extension member 400 can extend out of the support cylinder chamber 200 and contact the brake disc, and can be further squeezed when the distance between the brake pad and the brake disc becomes smaller. Therefore, the piston moves toward the inside of the support cylinder chamber, which facilitates the subsequent measurement of performance parameters such as the braking sensitivity of the brake caliper unit, the relief clearance, and the primary adjustment amount.
  • the extension piece 400 is cylindrical, the extension piece 400 is coaxial with the piston 300, and the extension piece 400 and the piston 300 are fixed together by welding, bolt connection, or integral molding.
  • a limit seat 340 is also fixed at the inlet and outlet 220 of the support cylinder chamber.
  • the limit seat 340 is in the shape of a circular plate.
  • the limit seat 340 is located between the limit stop ring 330 and the piston 300.
  • the center of the limit seat 340 is provided with a guide through hole 350, the extension piece 400 is sleeved inside the guide through hole 350, and the extension piece 400 is slidingly fitted with the guide through hole 350 to guide the through hole in the limit seat.
  • the movement under the guidance of 350 improves the stability of the movement of the protrusion 400.
  • the piston 300 moves toward the support cylinder chamber inlet and outlet 220, driving the extension member 400 to move to the outside of the brake disc body 100.
  • the movement displacement of the protrusion 400 is calculated by detecting the pressure in the supporting cylinder chamber 200 corresponding to the protrusion 400 under different movement displacements.
  • a detection brake pad 1 is provided, and the detection brake pad 1 has a supporting cylinder chamber 200, a piston 300, and an extension member 400.
  • the detection brake pad 1 can replace the track
  • the brake pads of the vehicle brake device are fixedly connected to the brake caliper unit, and at the same time, when the protrusion 400 is in contact with the brake disc, the supporting cylinder chamber 200 corresponding to the protrusion 400 under different movement displacements is detected
  • the internal pressure can reflect (or convert) the movement displacement of the protrusion 400, and then accurately obtain performance parameters such as the braking sensitivity of the brake caliper unit, the primary adjustment amount, and the relief of the gap.
  • the first pressure detecting element 2 is connected to the pressure detecting portion 120, and the first pressure detecting element 2 is arranged corresponding to the supporting cylinder chamber 200.
  • the first pressure detection element 2 is used to detect the pressure inside the support cylinder chamber 200, and then provide necessary parameters for calculating the braking sensitivity, primary adjustment amount, clearance relief and other performance of the brake caliper unit.
  • the first pressure detection element 2 is preferably a quick-plug pressure detection element, the first pressure detection element 2 has a quick-plug connector, and the quick-plug connector is sealed and plugged into the sensor interface, that is, the first pressure The detection element 2 is sealed to the sensor interface, and the first pressure detection element 2 is detachably connected to the sensor interface.
  • the first pressure detection element 2 can also be used as a part of the detection brake plate 1.
  • the signal receiving unit 3 is in communication connection with the first pressure detecting element 2 to receive the pressure signal detected by the first pressure detecting element 2.
  • the signal receiving unit 3 includes a signal conversion box 31 and a mobile client 32.
  • the signal conversion box 31 and the brake pad body 100 are fixed together by bolting or welding, and the signal conversion box 31 and The first pressure detection element 2 is communicatively connected to receive the pressure signal detected by the first pressure detection element 2 and process the pressure signal, and then send the pressure signal to the mobile client 32 in a desired state.
  • the corresponding relationship between the pressure value corresponding to the pressure signal and the displacement of the extension member 400 can be established in advance, and then when the signal conversion box 31 receives the detected pressure signal, the pressure signal can be directly converted into the displacement of the extension member 400 and sent to Mobile client 32.
  • the mobile client 32 may be a mobile phone, and the mobile client 32 is wirelessly connected to the signal conversion box 31 to remotely receive the pressure signal output by the signal conversion box 31 and display the pressure signal to the user.
  • the piston 300 is There are multiple, multiple pistons 300 and multiple supporting cylinder chambers 200 are arranged in one-to-one correspondence, and there are also multiple protrusions 400, and multiple protrusions 400 are arranged in one-to-one correspondence with multiple supporting cylinder chambers 200.
  • the pressure There are also multiple detection parts 120 corresponding to the supporting cylinder chamber 200. Therefore, the detection brake pads can respectively detect the performance parameters of the brake caliper unit at different positions of the brake pads, such as braking sensitivity, primary adjustment amount, and clearance relief.
  • the number of support cylinder chambers 200 is at least three (preferably three), that is, there is at least one support cylinder chamber 200 as the first support cylinder chamber, and there is at least one support cylinder
  • the chamber 200 is the second support cylinder chamber, and there is at least one support cylinder chamber 200 as the third support cylinder chamber.
  • the first support cylinder chamber and the second support cylinder chamber are respectively located at both ends of the brake pad body 100 (corresponding to FIG. 2 , Which are respectively located at the upper and lower ends of the brake pad body 100), the third support cylinder chamber is located between the first support cylinder chamber and the second support cylinder chamber, the first support cylinder chamber, the second support cylinder chamber and the third support cylinder
  • the rooms are distributed in a triangle.
  • the detection brake pad can separately detect the performance parameters of the brake caliper unit in the upper, middle and lower positions of the brake pad, such as the braking sensitivity, one-time adjustment and relief clearance, and then through comparative evaluation, it can comprehensively test each Whether the pressure of the brake pads at different positions on one side of the brake caliper unit is evenly distributed, so as to better prevent the brake pads from eccentric wear when the brake caliper unit is working.
  • the brake caliper unit failure detection device of the present application further includes a brake control mechanism 4, which is connected to the brake cylinder of the brake caliper unit to brake
  • the control mechanism 4 is used to replace the rail vehicle brake control system, and is used to control the brake cylinder of the brake caliper unit during fault detection. It is based on the air supply principle of the rail vehicle to supply the basic electrical The components are integrated.
  • the brake control mechanism 4 includes an air source interface 41, a relay valve 42, a pneumatic control unit 43, and a brake cylinder interface 44, among which:
  • the wind source interface 41 is used to connect an external wind source device to provide a wind source
  • the relay valve 42 has an inlet end, a control end and an outlet end, and the inlet end is connected with the air source interface;
  • the air pressure control unit 43 is connected to the control end of the relay valve 42 to control the air pressure at the outlet end of the relay valve 42.
  • the air pressure control unit 43 includes an inflation solenoid valve 431, an exhaust solenoid valve 432, and a second pressure detection element 433.
  • One end of the inflation solenoid valve 431 is connected to the air source interface 41, and the inflation solenoid valve 431
  • the other end of the exhaust solenoid valve 432 is connected to the exhaust solenoid valve 432, one end of the exhaust solenoid valve 432 is connected to the charging solenoid valve 431, the other end of the exhaust solenoid valve 432 is connected to the atmosphere, and the control end of the relay valve 42 is connected to the charging solenoid valve 431
  • Between the exhaust solenoid valve 432 and the second pressure detection element 433 is connected between the inflation solenoid valve 431 and the exhaust solenoid valve 432 to detect the pressure of the gas supplied to the control end of the relay valve 42.
  • the brake cylinder interface 44 is connected to the air outlet of the relay valve 42 and the brake cylinder interface 44 is connected to the air inlet of the brake cylinder of the brake caliper unit.
  • the brake cylinder interface 44 communicates with the air inlet, so as to realize the communication between the relay valve 42 and the brake cylinder.
  • the brake control mechanism 4 when the air source interface 41 is connected to an external air source, the wind enters the brake control mechanism 4 from the air source interface 41, and the inflation and exhaust volume of the inflation solenoid valve 431 and the exhaust solenoid valve 432 are adjusted.
  • the flow of the relay valve 42 so that the required wind is output from the air outlet of the relay valve 42, and then sent to the brake cylinder of the brake caliper unit through the brake cylinder interface to realize the control of the brake caliper unit Brake control. Therefore, the brake caliper unit failure detection device of the present application has a simple structure and is convenient to move and operate by providing the brake control mechanism 4, and at the same time, it does not rely on the rail vehicle brake control system to independently complete the brake caliper adjustment. The detection of unit performance reduces the detection cost and improves the detection efficiency.
  • the brake caliper unit fault detection device provided by the present application further includes a live contact side exhaust plug door 45, an opening and closing handle that controls the opening and closing of the live contact side exhaust plug door 45, and
  • the third pressure detection element 46, the exhaust valve 45 on the side with electric contact is connected between the outlet end of the relay valve 42 and the brake cylinder interface 44 to ensure that the brake caliper unit failure detection device is performed during the pressure holding test In the exhaust state, that is, the communication between the brake cylinder and the relay valve is disconnected, and no inflation is performed.
  • the pressure holding characteristics of the brake caliper unit can be accurately measured.
  • the third pressure detection element 46 is connected to the side row of the live contact
  • the air plug 45 and the brake cylinder interface 44 are used to monitor the air supply pressure.
  • the brake caliper unit failure detection device provided in the present application further includes a load cell, which is fixedly connected to the brake pad body 100, and the load cell is connected to the second The mounting parts 110 are respectively located on both sides of the brake pad body 100 so that the load cell can contact the brake disc during use, so that the detecting brake pad 1 has the function of detecting the output force of the brake caliper unit.
  • a plurality of supporting cylinder chambers 200 can be connected into one body through a ventilation channel, that is, the plurality of supporting cylinder chambers 200 share a ventilation channel to communicate with the outside of the detection disc 1.
  • the present application also provides a brake caliper unit failure detection method, which applies the above-mentioned brake caliper unit failure detection device, and includes the following steps:
  • the detection method is described below using gas as the fluid that provides the pre-pressure for the supporting cylinder chamber.
  • gas as the fluid that provides the pre-pressure for the supporting cylinder chamber.
  • liquid can also be used as the fluid that provides the pre-pressure.
  • the sensor interface is provided with a one-way valve communicating with the supporting cylinder chamber.
  • the first pressure detecting element 2 when gas is input to the supporting cylinder chamber through the one-way valve, the first pressure detecting element 2 is not connected to the brake disc body, and the piston is in When the inner pressure of the supporting cylinder chamber is fully extended, the first pressure detecting element is installed in the sensor interface to make the supporting cylinder chamber a closed space. In this case, the position of the protruding member when the piston fully extends out of the supporting cylinder chamber is the initial position. When multiple inspections are repeated, the displacement of the protruding member is relative to the same initial position. Therefore, the results of multiple inspections Easy to compare between. In addition, it is also possible to install the first pressure detecting element in the sensor interface when the piston partially extends out of the supporting cylinder chamber.
  • the brake caliper unit is in an ideal state, that is, the disc gap on both sides, the gap between the upper, middle, and lower discs, as well as the left and right disc gaps are the same for each measurement, and the brake caliper unit is manufactured. Dynamic sensitivity test, one-time adjustment test and relief gap test.
  • the air pressure required for braking is applied to the brake cylinder of the brake caliper unit.
  • This air pressure is the internal pressure of the brake cylinder.
  • the gas pressure detected from the pressure detection unit is P 1 , that is The pressure value obtained from the first pressure detecting element 2 is P 1 , and the protrusion displacement of the protrusion 400 at this time is set as h 1 , and P 1 is the pressure inside the supporting cylinder chamber 200;
  • the area of the piston 300 is S, and the natural volume of the gas corresponding to the support cylinder chamber 200 (in this embodiment, it is the natural volume of the air storage chamber 500, and if the air storage chamber 500 is not provided, it is the support cylinder
  • the volume of the chamber 200 is V g
  • the extension displacement of the extension member 400 in the initial state is h 0
  • the braking sensitivity of the brake caliper unit is a
  • h 0 is the displacement produced by the movement of the extension member 400 driven by the piston 300 when the support cylinder chamber 200 is filled with gas
  • h 1 is the piston 300 or the extension member 400 when the internal pressure of the support cylinder chamber 200 is P1
  • the displacement at the position before the support cylinder chamber 200 is filled with gas then:
  • the air pressure required for braking is applied to the brake cylinder of the brake caliper unit.
  • the gas pressure detected from the pressure detecting unit is P 2 , which is obtained from the first pressure detecting element 2 a pressure value P 2, at this time was 400 projecting member projecting displacement h 2
  • P 2 is the pressure inside the support cylinder chamber 200
  • h 2 to support the internal pressure of the cylinder chamber 200 is 2 P
  • the piston 300 or extension The displacement of the output member 400 relative to the position of the supporting cylinder chamber 200 before being filled with gas;
  • the air pressure applied to the brake cylinder of the brake caliper unit is exhausted.
  • the gas pressure detected from the pressure detecting part is P 3 , that is, the pressure value obtained from the first pressure detecting element 2 is P 3 ,
  • the extension displacement of the extension member 400 at this time is h 3
  • P 3 is the internal pressure of the supporting cylinder chamber 200
  • h 3 is the internal pressure of the supporting cylinder chamber 200
  • the piston 300 or the extension member 400 is relative to The displacement of the position of the supporting cylinder chamber 200 before being filled with gas;
  • the brake caliper unit On the basis that the gas pressure detected by the pressure detection unit is P 3 , that is, after completing one adjustment of the brake caliper unit, the brake caliper unit is repeatedly inflated and exhausted until the In the state of inflating and exhausting the brake caliper unit, the gas pressure detected from the pressure detection unit no longer changes. At this time, as shown in FIG. In the state, the gas pressure detected from the pressure detection unit is P m , and the extension displacement of the corresponding extension member 400 is set to h m .
  • the The gas pressure detected by the pressure detection unit is P n
  • the extension displacement of the corresponding extension member 400 is h n
  • the relief gap of the brake caliper unit is c
  • P m and P n are both supports
  • the pressure inside the cylinder chamber 200, h m and h n are the displacement of the piston 300 or the protrusion 400 relative to the position of the supporting cylinder chamber 200 before the gas is not filled when the internal pressure of the supporting cylinder chamber 200 is P m and P n , then:

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Abstract

提供一种检测闸片(1)、制动夹钳单元故障检测装置及检测方法,检测闸片(1)包括闸片本体(100)、支撑缸室(200)、活塞(300)及伸出件(400),闸片本体(100)具有压力检测部(120),支撑缸室(200)形成于闸片本体(100)中,支撑缸室(200)与压力检测部(120)对应设置,活塞(300)密封套接于支撑缸室(200)中,伸出件(400)与活塞(300)固定连接,支撑缸室(200)具有可为其充入一定预压力的压力输入口(210),以及供伸出件(400)往复伸出的进出口(220)。

Description

检测闸片、制动夹钳单元故障检测装置及检测方法
本申请要求在2019年05月29日提交中国专利局、申请号为201910456828.0、申请名称为“检测闸片、制动夹钳单元故障检测装置及检测方法”中国专利申请的优先权,其全部内容通过引用结合在本申请中。
技术领域
本申请属于车辆制动故障检测技术领域,尤其涉及一种检测闸片、制动夹钳单元故障检测装置及检测方法。
背景技术
制动夹钳单元、制动盘和制动闸片共同构成机车车辆的基础制动装置。在机车车辆运行过程中,保持制动闸片与制动盘之间间隙稳定,是保证机车车辆制动性能可靠,以及制动盘和制动闸片正常磨耗的必要条件,而制动夹钳单元的制动灵敏度、缓解间隙和一次调整量等参数是决定制动闸片与制动盘之间间隙稳定的重要指标,因此,在制动夹钳单元装车前、运行到一定的里程后以及发生制动故障时,均需要对上述性能参数测试,以评定制动夹钳单元是否符合使用要求。
美国发明US6357291B1公开了一种制动偏差测量装置,包括载荷测量机构,用于测试制动夹钳活塞施加在制动偏差测量闸片上的载荷。车轮制动时,为了增强稳定性和车辆的控制,制动系统偏向前制动,该制动偏差测量装置可用于测量制动系统通过制动线分配在不同车轮上的制动力之间的偏差,但并没有涉及制动间隙的测量。
现有对制动夹钳单元的制动灵敏度、缓解间隙和一次调整量等性能参数的精确测量,均是在试验台上完成的,即在制动夹钳单元装车前、运用到一定的里程后需要做状态修以及发生制动故障时,需要将制动夹钳单元与构架进行分离并放置于试验台中,以在制动夹钳单元处于独立个体的状态下,通过试验台来测量制动夹钳单元的制动灵敏度、缓解间隙和一次调整量等性能参数,其中,试验台为制动夹钳单元的故障检测提供了必要的模拟真实工况的检测环境,以及检测性能参数所必需的检测仪器。在对制动夹钳单元做故障检测时,需要将制动夹钳单元从构架上分离后在试验台中做故障检测,因此检测环境与制动夹钳单元的实际应用环境之间存在有一定的差距,从而导致检测结果的准确性不高。
发明内容
本申请提供一种检测闸片,用于车辆制动装置的故障检测,所述检测闸片
包括:
闸片本体,所述闸片本体具有:
第二安装部;
压力检测部,所述压力检测部可与压力检测元件密封插接;
支撑缸室,所述支撑缸室形成于所述闸片本体中,所述支撑缸室与所述压力检测部对应设置;
活塞,所述活塞密封套接于所述支撑缸室中;
伸出件,所述伸出件与所述活塞固定连接;
所述支撑缸室具有:
进出口,所述进出口与所述第二安装部分别位于所述闸片本体的两侧;
压力输入口,用于向所述支撑缸室的内部导入流体压力,为所述活塞朝向进出口运动提供动力;
所述伸出件与所述进出口对应设置,所述伸出件在所述活塞的带动下与制动盘接触。
作为优选,还包括容气腔室,所述容气腔室形成于闸片本体中。
作为优选,所述容气腔室形成于所述支撑缸室的外部,并且所述容气腔室沿着所述支撑腔室的外周方向延伸;
所述容气腔室具有出气口及进气口,所述出气口与所述压力输入口连通,所述进气口与所述闸片本体的外部连通。
作为优选,压力检测部为传感器接口,所述进气口与所述传感器接口连通,外界流体经过所述传感器接口进入所述闸片本体的内部,继而经过所述进气口进入至所述容气腔室的内部,继而经过所述出气口及所述压力输入口进入至所述支撑缸室的内部。
作为优选,所述支撑缸室为多个,多个所述支撑缸室间隔分布,所述活塞为多个,多个所述活塞与多个所述支撑缸室一一对应设置,所述伸出件为多个,多个所述伸出件与多个所述支撑缸室一一对应设置。
作为优选,存在至少一个支撑缸室为第一支撑缸室,存在至少一个支撑缸室为第二支撑缸室,存在至少一个支撑缸室为第三支撑缸室,其中,所述第一支撑缸室与所述第二支撑缸室分别位于所述闸片本体的两端,所述第三支撑缸室位于所述第一支撑缸室与所述第二支撑缸室之间,所述第一支撑缸室、所述第二支撑缸室及所述第三支撑缸室呈三角形分布。
本申请还提供一种制动夹钳单元故障检测装置,制动夹钳单元包括闸片托组成,所述制动夹钳单元故障检测装置包括:
前文所述的检测闸片,所述检测闸片的第二安装部与闸片托组成的第一安装部固定连接;
压力检测元件,所述压力检测元件与所述压力检测部连接,所述压力检测元件与所述支撑缸室对应设置;及
信号接收单元,所述信号接收单元与所述压力检测元件通信连接。
作为优选,所述压力检测元件与所述闸片本体固定连接,所述信号接收单元包括:
信号转换箱,所述信号转换箱与所述闸片本体固定连接,所述信号转换箱与所述压力检测元件通信连接;及
移动客户端,所述移动客户端与所述信号转换箱无线连接。
作为优选,制动夹钳单元还包括制动缸,制动缸与闸片托组成连接,制动缸具有进风口,其特征在于,所述制动夹钳单元故障检测装置还包括:
制动控制机构,所述制动控制机构与制动缸连接,所述制动控制机构包括:
风源接口;
中继阀,所述中继阀具有进气端、控制端及出气端,所述进气端与所述风源接口连接;
气压控制单元,所述气压控制单元与所述控制端连接;
制动缸接口,所述制动缸接口与所述出气端连接,所述制动缸接口与制动缸的进风口连接。
本申请还提供一种制动夹钳单元故障检测方法,应用前文所述的制动夹钳单元故障检测装置,所述制动夹钳单元故障检测方法包括以下步骤:
将所述检测闸片的所述第二安装部与闸片托组成的第一安装部固定;
向所述压力输入口输入气压,并且保持所述支撑缸室内部的气压,此时,从所述压力检测部检测到的气体压力为P 0,同时所述伸出件与制动盘接触;
向制动夹钳单元施加制动所需的气压,此时,从所述压力检测部检测的气体压力为P 1
设所述活塞的面积为S,设对应于所述支撑缸室的气体固有容积为V g,以及设制动夹钳单元的制动灵敏度为a,则:
Figure PCTCN2020092875-appb-000001
作为优选,所述制动夹钳单元故障检测方法还包括以下步骤:
向制动夹钳单元施加制动所需的气压,此时,从所述压力检测部检测到的气体压力为P 2
将向制动夹钳单元施加的气压排空,此时,从所述压力检测部检测到的气体压力为P 3
设制动夹钳单元的一次调整量为b,则:
Figure PCTCN2020092875-appb-000002
作为优选,所述制动夹钳单元故障检测方法还包括以下步骤:
在从所述压力检测部检测到的气体压力为P 3的基础上,反复向制动夹钳单元充气、排气,直至在向制动夹钳单元充气及排气的状态下,从所述压力检测部检测到的气体压力均不再发生变化,此时,设在向制动夹钳单元充气的状态下,从所述压力检测部检测到的气体压力为P m,设在向制动夹钳单元排气的状态下,从所述压力检测部检测到的气体压力为P n,以及设制动夹钳单元的缓解间隙为c,则:
Figure PCTCN2020092875-appb-000003
与现有技术相比,本申请的有益效果为:
本申请通过设置检测闸片,同时该检测闸片具有支撑缸室、活塞及伸出件,当需要对车辆制动装置进行故障检测时,该检测闸片能够代替车辆制动装置的制动闸片与动力执行机构固定连接,同时,在伸出件与制动盘接触下,通过检测伸出件在不同运动位移下所对应的支撑缸室内的压力,即可反映出(或者说换算出)伸出件的运动位移,进而精确获得动力执行机构的制动灵敏度、一次调整量及缓解间隙等性能参数。检测过程中,无需将动力执行机构卸下,并且无需借助试验台对动力执行机构进行故障检测,从而保证了检测环境的真实性, 在不卸下制动夹钳单元的情况下,仍能够实现对制动夹钳单元进行精确检测,进而提高了检测结果的准确性。
附图说明
图1为一种实施方式的制动夹钳单元的结构示意图;
图2为一种实施方式的制动夹钳单元故障检测装置的部分结构示意图1;
图3为一种实施方式的制动夹钳单元故障检测装置的部分结构示意图2;
图4为一种实施方式的检测闸片的结构示意图,其中,检测闸片安装有信号接收单元和压力检测元件;
图5为图4中检测闸片的侧视图;
图6为图5中检测闸片沿着A-A方向的剖视图;
图7为一种实施方式的制动夹钳单元故障检测装置的制动控制机构的结构示意图;
图8为表示图7中的制动控制机构与制动夹钳单元的连接关系示意图;
图9为本申请的制动夹钳单元故障检测装置检测制动夹钳单元的制动灵敏度的原理示意图;
图10为一种实施方式的制动夹钳单元故障检测装置检测制动夹钳单元的一次调整量的原理示意图;
图11为一种实施方式的制动夹钳单元故障检测装置检测制动夹钳单元的缓解间隙的原理示意图;
图中编号:10、闸片托组成;101、第一安装部;11、制动闸片;12、制动缸;1、检测闸片;100、闸片本体;110、第二安装部;120、压力检测部;200、支撑缸室;210、压力输入口;220、进出口;300、活塞;310、活塞本体;320、密封圈;330、限位挡圈;340、限位座;350、导向通孔;400、伸出件;500、容气腔室;510、出气口;520、进气口;2、第一压力检测元件;3、信号接收单元;31、信号转换箱;32、移动客户端;4、制动控制机构;41、风源接口;42、中继阀;43、气压控制单元;431、充气电磁阀;432、排气电磁阀;433、第二压力检测元件;44、制动缸接口;45、带电触点侧排风塞门;46、第三压力检测元件。
具体实施方式
以下结合具体实施方式对本申请的技术方案进行详实的阐述,然而应当理解,在没有进一步叙述的情况下,一个实施方式中的元件、结构和特征也可以有益地结合到其他实施方式中。
在本申请的描述中,需要理解的是,术语“第一”、“第二”仅用于描述目的,而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此,限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。
在本申请的描述中,需要理解的是,术语“上”、“下”、“底”、“内”等指示的方位或位置关系为基于附图中所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示 或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。
在本申请的描述中,需要说明的是,除非另有明确的规定和限定,术语“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。
所述的实施方式仅仅是对本申请的优选实施方式进行描述,并非对本申请的范围进行限定,在不脱离本申请设计精神的前提下,本领域普通技术人员对本申请的技术方案作出的各种变形和改进,均应落入本申请权利要求书确定的保护范围内。
本申请提供的技术方案,总体思路如下:
为了在不卸下车辆(如轨道车辆)制动装置的动力执行机构(如制动夹钳单元)的情况下,仍能够实现对动力执行机构进行精确检测,本申请提供了一种检测闸片,该检测闸片用于车辆制动装置的故障检测,该检测闸片的闸片本体与车辆制动装置的动力执行机构对应设置,该检测闸片具有支撑缸室、活塞及伸出件,当需要对车辆制动装置进行故障检测时,该检测闸片能够代替车辆制动装置的制动闸片与动力执行机构固定连接,同时,在伸出件与制动盘接触下,通过检测伸出件在不同运动位移下所对应的支撑缸室内的压力,即可反映出(或者说换算出)伸出件的运动位移,进而精确获得动力执行机构的制动灵敏度、一次调整量及缓解间隙等性能参数,过程中,无需将动力执行机构卸下,并且无需借助试验台对动力执行机构进行故障检测,从而保证了检测环境的真实性,进而提高了检测结果的准确性。
进一步,本申请还提供了一种应用该检测闸片来对制动夹钳单元进行故障检测的制动夹钳单元故障检测装置,以及应用该制动夹钳单元故障检测装置来对制动夹钳单元进行故障检测的检测方法,在不拆卸制动夹钳单元的情况下,仍能够实现对制动夹钳单元进行精确检测,进而提高了检测结果的准确性。
为了更好的理解本申请的发明构思,下面将以检测闸片应用于轨道车辆制动夹钳单元的故障检测为例,结合说明书附图以及具体的实施方式对上述技术方案进行详细的说明。
参见图2至图3,本申请提出了一种制动夹钳单元故障检测装置,其用于对制动夹钳单元进行故障检测。作为轨道车辆基础制动装置的动力执行机构,如图1所示,该制动夹钳单元包括闸片托组成10及制动缸12,制动缸12与闸片托组成10连接,以驱动闸片托组成10运动,闸片托组成10具有第一安装部101,第一安装部101用于与制动闸片11连接,该制动夹钳单元故障检测装置包括检测闸片1、第一压力检测元件2及信号接收单元3,检测闸片1包括闸片本体100、支撑缸室200、活塞300及伸出件400,其中:
闸片本体100具有第二安装部110及压力检测部120,第二安装部110的结构与第一安装部101相适应,以使第一安装部101能够与第二安装部110固定连接,即,当需要对制动夹钳单元进行故障检测时,检测闸片1替换制动闸片11,继而通过第二安装部110与闸片托组成的第一安装部101固定连接。其中第二安装部110与第一安装部101间的连接关系,和制动闸片11与闸片托组成10的连接关系相同,即,检测闸片1与闸片托组成10的连接关 系,和制动闸片11与闸片托组成10的连接关系相同。伸出件400与活塞300固定连接,伸出件400也可以是活塞300的一部分,两者一体成型。压力检测部120用于设置或连接压力检测元件(或者压力检测仪器,例如,压力检测元件等),以为支撑缸室200内部压力的检测提供条件,因此,只要检测闸片1具有检测支撑缸室200内部压力的能力,即,能够与压力检测元件相结合,以检测支撑缸室200内部的压力,即可确定闸片本体100具有压力检测部120。
具体而言,如图2和图3所示,闸片本体100一体化成型,例如,闸片本体100通过精密铸造整体成型,然后再精加工而成,如图4和图5所示,第二安装部110为安装于闸片主体100背部(即,检测闸片1安装在闸片托组成10上后,第二安装部110位于靠近闸片托组成10的一侧)的燕尾结构。闸片托组成的第一安装部101具有第一接口,第二安装部110具有第二接口,第二接口的设置同制动闸片,即,第二接口设置成制动闸片11上与闸片托组成10连接的接口相同,第二接口与第一接口相适应,以与第一接口固定连接。压力检测部120优选为传感器接口,以与压力检测元件密封插接。压力检测部也可以是压力检测面,压力检测面与支撑缸室也是密封连接,支撑缸室内部压力变化可引起该压力检测面某一些参数变化,例如机械形变、电阻变化,与该压力检测面连接的压力检测元件可检测到此参数变化,并将其转化为压力的变化。
支撑缸室200形成于闸片本体100中,支撑缸室200与压力检测部120对应设置,以当压力检测部120设有或者连接压力检测元件时,能够对支撑缸室200内部的压力进行检测。支撑缸室200的内部结构可以参照气缸缸室,或参照气缸缸室设置的其他腔室结构,例如,圆柱形腔室、棱柱形腔室等。如图3和图6所示,支撑缸室200具有压力输入口210及进出口220,压力输入口210用于向支撑缸室200的内部导入流体压力,以为活塞300的伸出运动(即朝向进出口220运动)提供动力。检测闸片用于检测之前,压力输入口可为支撑缸室充入一定预压力,以使伸出件伸出进出口,进而与制动盘接触,使得检测闸片1进入和维持检测初始状态,以便在后续检测过程中伸出件可被压回支撑缸室中。流体是能流动的物质,是液体和气体的总称,流体具有一定的可压缩性。进出口220垂直于闸片本体100,伸出件400可在活塞300的带动下在进出口220内往复运动。若通过压力输入口210向支撑缸室200内导入气体,使支撑缸室200内部具有一定的压力,则压力输入口210为气压输入口,可用于向支撑缸室200的内部导入气体,继而通过气压带动活塞300伸出,此时,支撑缸室200为有气体的腔室,进出口220与第二安装部110分别位于闸片本体100的两侧,以在当检测闸片1连接至闸片托组成10上时,第二安装部110与第一安装部101固定连接,进出口220朝向制动盘(或者说,进出口220背向闸片托组成10),从而能够使伸出件400在活塞300的带动下与制动盘接触。若通过压力输入口210向支撑缸室200内导入液体,使支撑缸室200内部具有一定的压力,则压力输入口210为液压输入口,可用于向支撑缸室200的内部导入液体,继而通过液压带动活塞300做伸出运动。由于液体的可压缩性相对较小,因此一般采用气体作为形成流体压力的介质,以下也主要以气体作为为支撑缸室提供预压力的流体来进行描述。当然在本来流体的压缩相对较小的时候也可采用液体。
支撑缸室导入流体之后即形成具有一定预压力的密封空间,该密封空间流体的量一定,制动时,检测闸片运动靠近制动盘,活塞因受到制动盘挤压而向支撑缸室内部运动,从而减小该密封空间的容积,改变了密封空间的压力。由于密封空间流体的量不变,根据密封空间压力的变化即可计算得出活塞的位移,进而得出伸出件的位移。该伸出件的位移可用于计算制动夹钳单元的性能参数。
具体而言,如图3和图6所示,支撑缸室200由闸片本体100的中空圆柱形缸套形成,支撑缸室200呈圆柱形。当压力检测部120为传感器接口时,可通过传感器接口为支撑缸室200输入压力,例如,可在传感器接口处设置连通支撑缸室200的单向阀,只允许向支撑缸室200内输入流体,而支撑缸室200内的流体不允许向外输出,此时压力检测部120兼具预充气和压力测试接口的作用。支撑缸室200的压力输入口210可为开设于闸片本体100的凹槽口,凹槽口呈条状。凹槽口自支撑缸室200的内部延伸至中空圆柱形缸套的外部,直至与压力检测部连通。当压力检测部120为传感器接口时,凹槽口与传感器接口连通,在对制动夹钳单元进行故障检测时,通过传感器接口以及凹槽口向支撑缸室200的内部提供所需压力的压缩空气,因而可通过第一压力检测元件2与传感器接口密封连接,使得支撑缸室形成密封空间,从而简化了检测闸片1的整体结构,同时提高了检测闸片1使用的效率。进一步,如图3和图6所示,为了提高对支撑缸室200内部压力检测结果的准确性,检测闸片1还包括容气腔室500,容气腔室500形成于闸片本体100中。容气腔室500优选为形成于支撑缸室200的外部,并且容气腔室500沿着支撑腔室200的外周方向延伸。容气腔室500具有出气口510及进气口520,出气口510与压力输入口210连通,进而将支撑缸室200与容气腔室500导通。进气口520与闸片本体100的外部连通,在如图3和图6所示的实施方式中,进气口520与传感器接口连通,测试前,外界流体经过传感器接口进入至闸片本体100的内部,继而经过容气腔室500的进气口520进入至容气腔室500的内部,继而经过容气腔室500的出气口510及支撑缸室200压力输入口210进入至支撑缸室200的内部,进而将活塞300沿进出口200向外推出,带动伸出件400伸出进出口220,检测闸片进入测试前的初始状态。进气口520与传感器接口也可以是同一个,即,提供预压力的气体直接通过传感器接口进入容器腔室500。
活塞300密封套接于支撑缸室200的内部,以在受到从压力输入口210进入到支撑缸室200的流体的压力时沿着支撑缸室200移动。具体而言,如图2和图3所示,活塞300与支撑缸室200滑动配合,活塞300具有活塞本体310及密封圈320,活塞本体310整体呈圆柱形,活塞本体310的外侧壁开设有环形凹槽,密封圈320套接于环形凹槽中,密封圈320的外侧与支撑缸室200接触。密封圈320优选为K型圈。此时,为了避免活塞300从进出口220运动出支撑缸室200,在支撑缸室200的进出口220设置限位挡圈330。限位挡圈330开设于支撑缸室200的进出口220处。限位挡圈330的内径小于活塞300的外径,进而可以将活塞300限制在支撑缸室200内运动。
伸出件400与活塞300固定连接,以随着活塞300沿着支撑缸室200同步移动。伸出件400与支撑缸室200的进出口220对应设置,伸出件400可伸出支撑缸室200并与制动 盘接触,并在检测闸片和制动盘间距变小时可进一步被挤压,从而使得活塞朝向支撑缸室内部运动,进而便于后续对制动夹钳单元的制动灵敏度、缓解间隙和一次调整量等性能参数的测量。具体而言,伸出件400呈圆柱形,伸出件400与活塞300同轴,伸出件400与活塞300通过焊接、螺栓连接或一体成型等方式固定在一起。为了提高伸出件400运动的稳定性,在支撑缸室进出口220处还固定设置有限位座340,限位座340呈圆形板状,限位座340位于限位挡圈330与活塞300之间,限位座340的中心开设有导向通孔350,伸出件400套接于导向通孔350的内部,伸出件400与导向通孔350滑动配合,以在限位座导向通孔350的导引下运动,从而提高了伸出件400运动的稳定性。
以上,当压力输入口210有压力输入时,活塞300朝向支撑缸室进出口220移动,带动伸出件400向闸片本体100的外部移动。测量时,伸出件400的运动位移通过检测伸出件400在不同运动位移下所对应的支撑缸室200内的压力换算得出。
基于上述,本申请至少具有如下的技术效果或优点:
本申请通过设置检测闸片1,同时该检测闸片1具有支撑缸室200、活塞300及伸出件400,当需要对轨道车辆制动装置进行故障检测时,该检测闸片1能够代替轨道车辆制动装置的制动闸片与制动夹钳单元固定连接,同时,在伸出件400与制动盘接触下,通过检测伸出件400在不同运动位移下所对应的支撑缸室200内的压力,即可反映出(或者说换算出)伸出件400的运动位移,进而精确获得制动夹钳单元的制动灵敏度、一次调整量及缓解间隙等性能参数。检测过程中,无需将制动夹钳单元从车辆架构上卸下,并且无需借助试验台对制动夹钳单元进行故障检测,从而保证了检测环境的真实性,即,解决了如何在不拆卸制动夹钳单元的情况下,仍能够实现对制动夹钳单元进行精确检测的技术问题,进而提高了检测结果的准确性。
继续参见图1,第一压力检测元件2与压力检测部120连接,第一压力检测元件2与支撑缸室200对应设置。第一压力检测元件2用于检测支撑缸室200内部的压力,进而为计算制动夹钳单元的制动灵敏度、一次调整量及缓解间隙等性能提供必要参数。具体而言,如图1所示,第一压力检测元件2优选为快插式压力检测元件,第一压力检测元件2具有快插接头,快插接头与传感器接口密封插接,即第一压力检测元件2与传感器接口密封连接,同时第一压力检测元件2与传感器接口可拆卸连接。当然,本领域技术人员基于上述可知,第一压力检测元件2还可以作为检测闸片1的一部分。
继续参见图1,信号接收单元3与第一压力检测元件2通信连接,以接收第一压力检测元件2检测到的压力信号。具体而言,如图1所示,信号接收单元3包括信号转换箱31及移动客户端32,信号转换箱31与闸片本体100通过螺栓连接或者焊接等方式固定在一起,信号转换箱31与第一压力检测元件2通信连接,以接收第一压力检测元件2检测到的压力信号并对该压力信号进行处理,继而将压力信号以所需的状态发送至移动客户端32。例如,可以预先建立压力信号对应的压力值与伸出件400位移的对应关系,进而信号转换箱31接收到检测的压力信号时,可直接将压力信号转换为伸出件400的位移,发送至移动客户端32。移动客户端32可以为手机,移动客户端32与信号转换箱31无线连接,以远程接收信号转 换箱31输出的压力信号,并且将该压力信号显示给用户。
为了预防制动夹钳单元工作时制动闸片发生偏磨的现象,继续参见图2和图3,支撑缸室200为多个,多个支撑缸室200间隔分布,对应的,活塞300为多个,多个活塞300与多个支撑缸室200一一对应设置,同时伸出件400也为多个,多个伸出件400与多个支撑缸室200一一对应设置,当然,压力检测部120对应于支撑缸室200也为多个,因此,该检测闸片能够分别检测制动夹钳单元在制动闸片不同位置的制动灵敏度、一次调整量和缓解间隙等性能参数,继而通过对比评价,能够测试每个制动夹钳单元单侧不同位置的制动闸片压力是否分布均匀,如果分布不均,可对制动闸片和制动夹钳单元进行调整,进而能够预防制动夹钳单元工作时制动闸片发生偏磨的现象。具体而言,如图1和图2所示,支撑缸室200的数量为至少三个(优选为三个),即存在至少一个支撑缸室200为第一支撑缸室,存在至少一个支撑缸室200为第二支撑缸室,存在至少一个支撑缸室200为第三支撑缸室,其中,第一支撑缸室与第二支撑缸室分别位于闸片本体100的两端(对应于图2,其分别位于闸片本体100的上下两端),第三支撑缸室位于第一支撑缸室与第二支撑缸室之间,第一支撑缸室、第二支撑缸室及第三支撑缸室呈三角形分布。因此该检测闸片可分别检测制动夹钳单元在制动闸片上、中、下不同位置的制动灵敏度、一次调整量和缓解间隙等性能参数,继而通过对比评价,能够全面地测试每个制动夹钳单元单侧不同位置的制动闸片压力是否分布均匀,进而能够更好的预防制动夹钳单元工作时制动闸片发生偏磨的现象。
为了实现便携式操作,继续参见图7至图8,本申请制动夹钳单元故障检测装置还包括制动控制机构4,制动控制机构4与制动夹钳单元的制动缸连接,制动控制机构4用于取代轨道车辆制动控制系统,用于在故障检测时,对制动夹钳单元的制动缸进行控制,其基于轨道车辆的供风原理,将供风所需的基本电气元件集成于一体,制动控制机构4包括风源接口41、中继阀42、气压控制单元43及制动缸接口44,其中:
风源接口41用于连接外界风源装置,以提供风源;
中继阀42具有进气端、控制端及出气端,进气端与风源接口连接;
气压控制单元43与中继阀42的控制端连接,以控制中继阀42出气端的出风风压。具体而言,如图5所示,气压控制单元43包括充气电磁阀431、排气电磁阀432及第二压力检测元件433,充气电磁阀431的一端与风源接口41连接,充气电磁阀431的另一端与排气电磁阀432连接,排气电磁阀432的一端与充气电磁阀431连接,排气电磁阀432的另一端连至大气,中继阀42的控制端连接于充气电磁阀431与排气电磁阀432之间,第二压力检测元件433连接于充气电磁阀431与排气电磁阀432之间,以检测向中继阀42的控制端提供气体的压力。
制动缸接口44与中继阀42的出气端连接,制动缸接口44与制动夹钳单元的制动缸的进风口连接。制动缸接口44与进风口连通,进而实现中继阀42与制动缸的连通。
以上,当风源接口41与外界风源连接后,风从风源接口41进入到制动控制机构4中,通过调节充气电磁阀431及排气电磁阀432的充气、排气量,调节中继阀42的导通量,从而使得所需的风从中继阀42的出气端输出,继而经过制动缸接口输送至制动夹钳单元的制动 缸中,实现对制动夹钳单元的制动控制。因此,本申请的制动夹钳单元故障检测装置,通过设置制动控制机构4,结构简单并且移动、操作方便,同时不依赖于轨道车辆制动控制系统,即可独立完成对制动夹钳单元性能的检测,进而降低了检测成本,以及提高了检测效率。
此外,继续参见图4,本申请提供的制动夹钳单元故障检测装置还包括带电触点侧排风塞门45,控制该带电触点侧排风塞门45开闭的开闭手柄,以及第三压力检测元件46,带电触点侧排风塞门45连接于中继阀42出气端与制动缸接口44之间,以保证在进行保压测试时,制动夹钳单元故障检测装置处于排气状态,即断开制动缸与中继阀的连通,不再进行充气,可精确的测量制动夹钳单元的保压特性,第三压力检测元件46连接于带电触点侧排风塞门45与制动缸接口44之间,以监测供风压力。
为了使得检测闸片1具有检测制动夹钳单元输出力的功能,本申请提供的制动夹钳单元故障检测装置还包括荷重传感器,荷重传感器与闸片本体100固定连接,荷重传感器与第二安装部110分别位于闸片本体100的两侧,以在使用时荷重传感器能够与制动盘接触,进而使得检测闸片1具有检测制动夹钳单元输出力的功能。
另外,为了简化检测闸片1的结构,可将多个支撑缸室200通过一个通气槽道连成一体,即多个支撑缸室200共用一个通气通道与检测闸片1的外界连通。
参见图9至图11,并结合图2至图6,本申请还提供了一种制动夹钳单元故障检测方法,其应用上述制动夹钳单元故障检测装置,包括以下步骤:
下面以气体作为为支撑缸室提供预压力的流体来对检测方法进行描述,当然也可以采用液体作为提供预压力的流体。
测试前,向压力输入口210输入气压,以使得三个支撑缸室200内部的气体压力为P 0(记为初始压力,此时,从压力检测部检测到的气体压力为P 0,即从第一压力检测元件2获取的压力值为P 0),使得活塞300完全伸出,检测闸片1进入检测初始状态,将三个第一压力检测元件2连接至闸片本体100上,打开移动客户端32对应的程序。本实施方式中,传感器接口设有连通支撑缸室的单向阀,因此在通过单向阀向支撑缸室输入气体时,第一压力检测元件2并未连接至闸片本体上,待活塞在支撑缸室内部压力作用下完全伸出时,再将第一压力检测元件安装于传感器接口中,使支撑缸室成为密闭空间。这种情况下,活塞完全伸出支撑缸室时伸出件的位置为初始位置,多次重复检测时,伸出件发生的位移均是相对同一个初始位置,因而,多次检测的结果之间容易进行比较。另外,也可以在活塞部分伸出支撑缸室时,将第一压力检测元件安装于传感器接口中。
将检测闸片1的第二安装部110与闸片托组成固定连接,即卸下制动夹钳单元的制动闸片,安装检测闸片1,通过转动制动夹钳单元的手动调节螺母调节盘片间隙(即制动盘与检测闸片的间隙),使得制动盘两侧的伸出件400与均与制动盘的盘面接触。此时,伸出件仍然保持完全伸出的状态。
以下,假设制动夹钳单元处于理想状态,即两侧盘片间隙,每测上、中、下盘片间隙,以及左、右侧盘片间隙均分别一致,进行制动夹钳单元的制动灵敏度测试、一次调整量测试及缓解间隙测试。
向制动夹钳单元的制动缸施加制动所需的气压,此气压为制动缸内部压力,此时,如图9所示,从压力检测部检测到的气体压力为P 1,即从第一压力检测元件2获取的压力值为P 1,设此时伸出件400的伸出位移为h 1,P 1为支撑缸室200内部的压力;
设活塞300的面积为S,设对应于支撑缸室200的气体固有容积(在本实施方式中,为容气腔室500的固有容积,在未设置容气腔室500的情况下为支撑缸室200的如有容积)为V g,设伸出件400初始状态(即气体压力为P 0时的状态)下的伸出位移为h 0,以及设制动夹钳单元的制动灵敏度为a,h 0为向支撑缸室200内充入气体时,活塞300带动伸出件400运动所产生的位移,h 1为支撑缸室200内部压力为P1时,活塞300或伸出件400相对于支撑缸室200未充入气体前的位置的位移,则:
根据理想气体状态方程3P 0(V g+Sh 0)=3P 1(V g+Sh 1),可以得出:
制动夹钳单元的制动灵敏度
Figure PCTCN2020092875-appb-000004
由图9可知,伸出件400受到制动盘的挤压,使得活塞300向支撑缸室内部移动,移动的距离为h 0-h 1
向制动夹钳单元的制动缸施加制动所需的气压,此时,如图10所示,从压力检测部检测到的气体压力为P 2,即从第一压力检测元件2获取的压力值为P 2,设此时伸出件400的伸出位移为h 2,P 2为支撑缸室200内部的压力,h 2为支撑缸室200内部压力为P 2时,活塞300或伸出件400相对于支撑缸室200未充入气体前的位置的位移;
将向制动夹钳单元的制动缸施加的气压排空,此时,从所述压力检测部检测到的气体压力为P 3,即从第一压力检测元件2获取的压力值为P 3,设此时伸出件400的伸出位移为h 3,P 3为支撑缸室200内部的压力,h 3为支撑缸室200内部压力为P 3时,活塞300或伸出件400相对于支撑缸室200未充入气体前的位置的位移;
设制动夹钳单元的一次调整量为b,则:
根据理想气体状态方程3P 0(V g+Sh 0)=3P 3(V g+Sh 3),可以得出:
制动夹钳单元的一次调整量
Figure PCTCN2020092875-appb-000005
在从所述压力检测部检测到的气体压力为P 3的基础上,即在完成制动夹钳单元的一次调整量检测的基础上,反复向制动夹钳单元充气、排气,直至在向制动夹钳单元充气及排气的状态下,从所述压力检测部检测到的气体压力均不再发生变化,此时,如图11所示,设在向制动夹钳单元充气的状态下,从所述压力检测部检测到的气体压力为P m,并且设对应的伸出件400的伸出位移为h m,设在向制动夹钳单元排气的状态下,从所述压力检测部检测到的气体压力为P n,并且设对应的伸出件400的伸出位移为h n,以及设制动夹钳单元的缓解间隙为c,P m和P n均为支撑缸室200内部的压力,h m和h n为支撑缸室200内部压力为P m和P n时,活塞300或伸出件400相对于支撑缸室200未充入气体前的位置的位移,则:
根据理想气体状态方程3P m(V g+Sh m)=3P n(V g+Sh n),可以得出:
制动夹钳单元的缓解间隙
Figure PCTCN2020092875-appb-000006

Claims (12)

  1. 一种检测闸片,用于车辆制动装置的故障检测,其特征在于,所述检测闸片包括:
    闸片本体,所述闸片本体具有:
    第二安装部;
    压力检测部,所述压力检测部可与压力检测元件密封插接;
    支撑缸室,所述支撑缸室形成于所述闸片本体中,所述支撑缸室与所述压力检测部对应设置;
    活塞,所述活塞密封套接于所述支撑缸室中;
    伸出件,所述伸出件与所述活塞固定连接;
    所述支撑缸室具有:
    进出口,所述进出口与所述第二安装部分别位于所述闸片本体的两侧;
    压力输入口,用于向所述支撑缸室的内部导入流体压力,为所述活塞朝向进出口运动提供动力;
    所述伸出件与所述进出口对应设置,所述伸出件在所述活塞的带动下与制动盘接触。
  2. 根据权利要求1所述的检测闸片,其特征在于,还包括容气腔室,所述容气腔室形成于闸片本体中。
  3. 根据权利要求2所述的检测闸片,其特征在于,所述容气腔室形成于所述支撑缸室的外部,并且所述容气腔室沿着所述支撑腔室的外周方向延伸;
    所述容气腔室具有出气口及进气口,所述出气口与所述压力输入口连通,所述进气口与所述闸片本体的外部连通。
  4. 根据权利要求3所述的检测闸片,其特征在于,压力检测部为传感器接口,所述进气口与所述传感器接口连通,外界流体经过所述传感器接口进入所述闸片本体的内部,继而经过所述进气口进入至所述容气腔室的内部,继而经过所述出气口及所述压力输入口进入至所述支撑缸室的内部。
  5. 根据权利要求1-4任一项所述的检测闸片,其特征在于,所述支撑缸室为多个,多个所述支撑缸室间隔分布,所述活塞为多个,多个所述活塞与多个所述支撑缸室一一对应设置,所述伸出件为多个,多个所述伸出件与多个所述支撑缸室一一对应设置。
  6. 根据权利要求1-4任一项所述的检测闸片,其特征在于,存在至少一个支撑缸室为第一支撑缸室,存在至少一个支撑缸室为第二支撑缸室,存在至少一个支撑缸室为第三支撑缸室,其中,所述第一支撑缸室与所述第二支撑缸室分别位于所述闸片本体的两端,所述第三支撑缸室位于所述第一支撑缸室与所述第二支撑缸室之间,所述第一支撑缸室、所述第二支撑缸室及所述第三支撑缸室呈三角形分布。
  7. 一种制动夹钳单元故障检测装置,制动夹钳单元包括闸片托组成,所述制动夹钳单元故障检测装置包括:
    检测闸片,所述检测闸片为如权利要求1-4中任一项所述的检测闸片,所述第二安装部 与闸片托组成的第一安装部固定连接;
    压力检测元件,所述压力检测元件与所述压力检测部连接,所述压力检测元件与所述支撑缸室对应设置;及
    信号接收单元,所述信号接收单元与所述压力检测元件通信连接。
  8. 根据权利要求7所述的制动夹钳单元故障检测装置,其特征在于,所述压力检测元件与所述闸片本体固定连接,所述信号接收单元包括:
    信号转换箱,所述信号转换箱与所述闸片本体固定连接,所述信号转换箱与所述压力检测元件通信连接;及
    移动客户端,所述移动客户端与所述信号转换箱无线连接。
  9. 根据权利要求8所述的制动夹钳单元故障检测装置,制动夹钳单元还包括制动缸,制动缸与闸片托组成连接,制动缸具有进风口,其特征在于,所述制动夹钳单元故障检测装置还包括:
    制动控制机构,所述制动控制机构与制动缸连接,所述制动控制机构包括:
    风源接口;
    中继阀,所述中继阀具有进气端、控制端及出气端,所述进气端与所述风源接口连接;
    气压控制单元,所述气压控制单元与所述控制端连接;
    制动缸接口,所述制动缸接口与所述出气端连接,所述制动缸接口与制动缸的进风口连接。
  10. 一种制动夹钳单元故障检测方法,应用权利要求7-9中任一项所述的制动夹钳单元故障检测装置,其特征在于,所述制动夹钳单元故障检测方法包括以下步骤:
    将所述检测闸片的所述第二安装部与闸片托组成的第一安装部固定;
    向所述压力输入口输入气压,并且保持所述支撑缸室内部的气压,此时,从所述压力检测部检测到的气体压力为P 0,同时所述伸出件与制动盘接触;
    向制动夹钳单元施加制动所需的气压,此时,从所述压力检测部检测的气体压力为P 1
    设所述活塞的面积为S,设对应于所述支撑缸室的气体固有容积为V g,以及设制动夹钳单元的制动灵敏度为a,则:
    Figure PCTCN2020092875-appb-100001
  11. 根据权利要求10所述的制动夹钳单元故障检测方法,其特征在于,所述制动夹钳单元故障检测方法还包括以下步骤:
    向制动夹钳单元施加制动所需的气压,此时,从所述压力检测部检测到的气体压力为P 2
    将向制动夹钳单元施加的气压排空,此时,从所述压力检测部检测到的气体压力为P 3
    设制动夹钳单元的一次调整量为b,则:
    Figure PCTCN2020092875-appb-100002
  12. 根据权利要求11所述的制动夹钳单元故障检测方法,其特征在于,所述制动夹钳单 元故障检测方法还包括以下步骤:
    在从所述压力检测部检测到的气体压力为P 3的基础上,反复向制动夹钳单元充气、排气,直至在向制动夹钳单元充气及排气的状态下,从所述压力检测部检测到的气体压力均不再发生变化,此时,设在向制动夹钳单元充气的状态下,从所述压力检测部检测到的气体压力为P m,设在向制动夹钳单元排气的状态下,从所述压力检测部检测到的气体压力为P n,以及设制动夹钳单元的缓解间隙为c,则:
    Figure PCTCN2020092875-appb-100003
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1240503A (zh) * 1996-12-12 2000-01-05 联盟-莫卧技术有限公司 盘状制动器
US6357291B1 (en) * 1999-12-22 2002-03-19 Ford Global Technologies, Inc. Apparatus and method for measuring brake bias
EP2700557A1 (de) * 2012-08-21 2014-02-26 RöschConsult International Ltd. Vorrichtung und Verfahren zum Messen der Anpresskraft der Bremsbeläge an Bremsscheiben von Schienenfahrzeugen
CN106989858A (zh) * 2017-03-30 2017-07-28 中车青岛四方车辆研究所有限公司 机车车辆闸片压力测试装置
CN110103933A (zh) * 2019-05-29 2019-08-09 中车青岛四方车辆研究所有限公司 检测闸片、制动夹钳单元故障检测装置及检测方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201983894U (zh) * 2011-03-17 2011-09-21 姜雪 一种用于检测盘式制动器制动力矩的新型检测装置
CN203376104U (zh) * 2013-07-15 2014-01-01 泛博制动部件(苏州)有限公司 电子卡钳的夹紧力测试装置
CN106167016B (zh) * 2016-08-31 2019-07-16 泛博制动部件(苏州)有限公司 卡钳活塞回位量测量装置及测量方法
CN106481703A (zh) * 2016-11-25 2017-03-08 中车长春轨道客车股份有限公司 一种液压制动单元制动力测试装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1240503A (zh) * 1996-12-12 2000-01-05 联盟-莫卧技术有限公司 盘状制动器
US6357291B1 (en) * 1999-12-22 2002-03-19 Ford Global Technologies, Inc. Apparatus and method for measuring brake bias
EP2700557A1 (de) * 2012-08-21 2014-02-26 RöschConsult International Ltd. Vorrichtung und Verfahren zum Messen der Anpresskraft der Bremsbeläge an Bremsscheiben von Schienenfahrzeugen
CN106989858A (zh) * 2017-03-30 2017-07-28 中车青岛四方车辆研究所有限公司 机车车辆闸片压力测试装置
CN110103933A (zh) * 2019-05-29 2019-08-09 中车青岛四方车辆研究所有限公司 检测闸片、制动夹钳单元故障检测装置及检测方法

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