Monorail crane brake shoe clearance online detection system
By designing a single-rail suspension shoe clearance online detection system, real-time detection of the gap and thickness of the brake shoe plate and brake disc is achieved using the MCU and eddy current displacement sensor, solving the problem of high fault tolerance in manual inspection and improving detection accuracy and efficiency.
Patent Information
- Application Number
- CN202510317560.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2025-06-06
AI Technical Summary
In the prior art, the gap and thickness of the single-rail suspension shoe manually detects the problems of high fault tolerance and time-consuming and labor-consuming, resulting in inaccurate detection results.
A single-rail suspension brake shoe gap online detection system is designed, through the connection between the MCU and multiple eddy current displacement sensors, the eddy current displacement sensor is used to measure the gap between the brake shoe plate and the brake disc under the track reference, and the residual thickness of the brake shoe plate is judged by the oil cylinder brake arm.
Real-time online detection of the gap and thickness of the brake shoe plate and brake disc is realized, reducing the time and energy of manual inspection, improving the accuracy of the detection results, and saving labor costs.
Smart Images
Figure CN120101633A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of brake shoe detection, in particular to an online detection system for the gap between monorail suspension brake shoes. Background Art
[0002] When the single-rail brake shoe is actually in use, it needs to be checked manually frequently to ensure normal braking of the train.
[0003] The existing brake shoe gap detection can ensure that mechanics can know the use status of the train's brake shoes at any time and can debug them at any time to facilitate the safe operation of the train.
[0004] The existing manual inspection of brake shoe clearance consumes too much time and energy, and there is also a human error tolerance rate, resulting in inaccurate brake shoe inspection results. Summary of the invention
[0005] In view of the deficiencies in the prior art, the present invention provides an online detection system for the gap between monorail suspension brake shoes, which solves the problem of error tolerance in manual detection of the gap and thickness of the brake shoes.
[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a monorail suspension brake shoe gap online detection system, including a detection system and a brake shoe system, wherein the detection system is used to detect the brake shoe system: The detection system includes an MCU, the MCU is respectively connected to a RAM and a FLASH storage module through a conversion circuit, the MCU is connected to a plurality of eddy current displacement sensors through an AD conversion conditioning circuit, the MCU is connected to an Ethernet through an Ethernet network module using an SPI protocol, and the MCU is connected to an RS485 chip through a serial communication module using a UART protocol; The brake shoe system includes a brake disc and brake shoe plates symmetrically arranged on both sides of the brake disc, lining plates are arranged on the outer sides of the brake shoe plates, eddy current displacement sensors are arranged on the tops of the lining plates, and detection ends of the eddy current displacement sensors are arranged on both sides of the brake disc.
[0007] Preferably, the MCU is connected to a RAM and a FLASH storage module respectively through a conversion circuit.
[0008] Preferably, cylinder brake arms are provided on the outer sides of the lining plates, and the cylinder brake arms are connected to the hydraulic brake system of the vehicle.
[0009] Preferably, the MCU is connected to a clock and a reset switch respectively via a JTAG interface.
[0010] Preferably, the MCU is connected to a power module via a control circuit, and the power module is used to provide a 12V DC voltage to the MCU.
[0011] Preferably, the MCU is connected to a power light and a running light through a control circuit.
[0012] Preferably, the MCU is connected to the vehicle's CAN bus via a CAN-BUS communication module.
[0013] Preferably, a method for operating a monorail brake shoe gap online detection system comprises the following steps: S1. Brake shoe gap detection: The eddy current displacement sensor is installed on the lining plate on one side of the brake shoe plate. The eddy current displacement sensor measures the gap between the brake shoe plate and the brake disc based on the track. During the travel of the monorail crane, the eddy current displacement sensor moves with the movement of the brake shoe plate. The gap between the brake shoe plate and the brake disc can be obtained by subtracting the displacement at the closing time from the displacement at the opening time. S2. Brake shoe thickness detection: After the eddy current displacement sensor in step S1 is installed, the pressure received by the cylinder brake arm is measured to determine whether the monorail crane is in a braking state. When the monorail crane is in a closed state, the detection system is started and the residual thickness of the brake shoe plate can be calculated by the MCU.
[0014] The present invention provides a monorail brake shoe gap online detection system, which has the following beneficial effects: The present invention cooperates with the detection system and the brake shoe system to install the eddy current displacement sensor on the lining plate on one side of the brake shoe plate. The eddy current displacement sensor measures the gap between the brake shoe plate and the brake disc with the track as a reference. During the travel of the monorail crane, the eddy current displacement sensor moves with the movement of the brake shoe plate. The gap between the brake shoe plate and the brake disc can be obtained by subtracting the displacement at the closing moment from the displacement at the opening moment. The pressure received by the cylinder brake arm is measured to determine whether the monorail crane is in a braking state. When the monorail crane is in a closed state, the detection system is started, and the residual thickness of the brake shoe plate can be calculated by the MCU. The gap between the brake shoe plate and the brake disc can be read online in real time when the train is running and under maintenance, so as to know the degree of wear of the brake shoe plate, facilitate maintenance for workers, and save labor costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the closed state of the present invention; Figure 2 This is a schematic diagram of the open gate state of the present invention; Figure 3 It is a structural schematic diagram of the brake shoe gap detection system of the present invention.
[0016] Among them, 1. Cylinder brake arm; 2. Lining plate; 3. Eddy current displacement sensor; 4. Brake shoe plate; 5. Brake disc. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] Embodiment 1: like Figure 1-3 As shown, an embodiment of the present invention provides an online detection system for the clearance of a monorail suspension brake shoe, including a detection system and a brake shoe system, wherein the detection system is used to detect the brake shoe system: The detection system includes an MCU, which is connected to RAM and FLASH storage modules through conversion circuits, and is connected to multiple eddy current displacement sensors 3 through AD conversion conditioning circuits. The MCU is connected to Ethernet through an Ethernet network module using SPI protocol, and is connected to an RS485 chip through a serial communication module using UART protocol. Through system integration, 24 brake shoe gaps / brake shoe thickness values can be monitored in real time, with a monitoring range of 0-10mm (accuracy of 0.01mm), and the brake shoe gap / brake shoe residual thickness is sent to the monorail crane controller through CAN / 485 / Ethernet; The brake shoe system includes a brake disc 5 and brake shoe plates 4 symmetrically arranged on both sides of the brake disc 5. Lining plates 2 are arranged on the outer sides of the brake shoe plates 4. Eddy current displacement sensors 3 are arranged on the tops of the lining plates 2. The detection ends of the eddy current displacement sensors 3 are arranged on both sides of the brake disc 5. The intrinsically safe eddy current displacement sensor 3: power supply DC10-24V; range: 0-8mm; measurement accuracy: 0.01mm; output signal is 1~5V.
[0019] The MCU is connected to the RAM and FLASH storage modules respectively through conversion circuits for storing data.
[0020] The outer sides of the lining plates 2 are provided with oil cylinder brake arms 1 , which are connected to the hydraulic brake system of the vehicle and are used to drive the brake shoe plates 4 .
[0021] The MCU is connected to the power light and running light through the control circuit. The MCU is connected to the clock and reset switch respectively through the JTAG interface. It has an audible and visual alarm function for brake shoe wear: when the brake shoe gap / brake shoe residual thickness exceeds the limit (10mm / 10mm), the corresponding status lights flash and an alarm voice of "brake shoe gap exceeds limit" is issued.
[0022] The MCU is connected to a power module through a control circuit, and the power module is used to provide a 12V DC voltage, a power supply voltage, to the MCU.
[0023] The MCU is connected to the vehicle's CAN bus through the CAN-BUS communication module to transmit the detection system data to the vehicle's center console.
[0024] Embodiment 2: Reference Figure 1-Figure 3 As shown, the present invention provides an operation method of a monorail brake shoe gap online detection system, comprising the following steps: S1. Brake shoe gap detection: The eddy current displacement sensor 3 is installed on the lining plate 2 on one side of the brake shoe plate 4. The eddy current displacement sensor 3 measures the gap between the brake shoe plate 4 and the brake disc 5 based on the track. During the travel of the monorail crane, the eddy current displacement sensor 3 moves with the movement of the brake shoe plate 4. The gap between the brake shoe plate 4 and the brake disc 5 can be obtained by subtracting the displacement at the closing time from the displacement at the opening time. S2. Brake shoe thickness detection: After the eddy current displacement sensor 3 in step S1 is installed, the pressure received by the cylinder brake arm 1 is measured to determine whether the monorail crane is in a braking state. When the monorail crane is in a closed state, the detection system is started and the residual thickness of the brake shoe plate 4 can be calculated by the MCU.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. An online detection system for the gap of a monorail suspension brake shoe, comprising a detection system and a brake shoe system, wherein the detection system is used to detect the brake shoe system, and is characterized in that: The detection system comprises an MCU, wherein the MCU is respectively connected to a RAM and a FLASH storage module via a conversion circuit, the MCU is connected to a plurality of eddy current displacement sensors (3) via an AD conversion conditioning circuit, the MCU is connected to an Ethernet via an Ethernet network module using an SPI protocol, and the MCU is connected to an RS485 chip via a serial communication module using a UART protocol; The brake shoe system comprises a brake disc (5) and brake shoe plates (4) symmetrically arranged on both sides of the brake disc (5), lining plates (2) are arranged on the outside of the brake shoe plates (4), eddy current displacement sensors (3) are arranged on the top of the lining plates (2), and detection ends of the eddy current displacement sensors (3) are arranged on both sides of the brake disc (5).
2. The monorail brake shoe gap online detection system according to claim 1 is characterized by: The MCU is respectively connected with the RAM and FLASH storage modules through a conversion circuit.
3. The monorail brake shoe gap online detection system according to claim 1 is characterized by: The outer sides of the lining plates (2) are each provided with a cylinder brake arm (1), and the cylinder brake arm (1) is each connected to a hydraulic brake system of the vehicle.
4. The monorail brake shoe gap online detection system according to claim 1 is characterized in that: The MCU is respectively connected to a clock and a reset switch via a JTAG interface.
5. The monorail brake shoe gap online detection system according to claim 1 is characterized by: The MCU is connected to a power supply module through a control circuit, and the power supply module is used to provide a 12V DC voltage to the MCU.
6. The monorail brake shoe gap online detection system according to claim 1 is characterized by: The MCU is connected with a power light and a running light through a control circuit.
7. The monorail brake shoe gap online detection system according to claim 1 is characterized by: The MCU is connected to the CAN bus of the vehicle via a CAN-BUS communication module.
8. The operating method of the monorail brake shoe gap online detection system according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Brake shoe gap detection: an eddy current displacement sensor (3) is mounted on a lining plate (2) on one side of a brake shoe plate (4). The eddy current displacement sensor (3) measures the gap between the brake shoe plate (4) and the brake disc (5) with the track as a reference. During the travel of the monorail crane, the eddy current displacement sensor (3) moves along with the movement of the brake shoe plate (4). The gap between the brake shoe plate (4) and the brake disc (5) can be obtained by subtracting the displacement at the time of closing the brake from the displacement at the time of opening the brake. S2. Brake shoe thickness detection: After the eddy current displacement sensor (3) in step S1 is installed, the pressure received by the cylinder brake arm (1) is measured to determine whether the monorail crane is in a braking state. When the monorail crane is in a closed state, the detection system is started and the residual thickness of the brake shoe plate (4) can be calculated by the MCU.