Monorail crane driving wheel wear state detection system

Abstract

The utility model discloses a monorail crane driving wheel wear state detection system, which comprises a controller, an alarm, a display screen, a hydraulic oil pump, an electromagnetic valve, a clamping hydraulic cylinder and a displacement sensor, the detection module is used for detecting telescopic position data of a piston in the clamping hydraulic cylinder; the displacement sensor is electrically connected with the signal input end of the controller; a hydraulic oil output port of the hydraulic oil pump is connected with an oil inlet of the clamping hydraulic cylinder; the electromagnetic valve is arranged on an oil way between the hydraulic oil pump and an oil inlet of the clamping hydraulic cylinder; the signal output end of the controller is electrically connected with the hydraulic oil pump, the electromagnetic valve and the alarm; and the display screen is electrically connected with the controller. The utility model solves the problem that the wearing of the driving wheel of the underground monorail crane cannot be found in time, and ensures that the wearing state of the driving wheel can be detected in real time in the running process of a locomotive.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine auxiliary transportation monorail cranes, in particular to a monorail crane driving wheel wear state detection system. Background Art

[0002] With the advancement of coal mining technology, the intelligence of monorail cranes has also become a trend. Monorail cranes travel by the friction between the drive wheels and the rails. The wear state of the drive wheels determines the safety and efficiency of monorail crane transportation.

[0003] However, due to the harsh underground environment, moisture and dust adhere to the track, and the drive wheel will wear out during the friction with the track. When the wear is too great, the drive wheel will idle due to insufficient friction, which will directly lead to a decrease in the traction of the monorail crane. The decrease in traction will cause the monorail crane to fail to climb or even slip when climbing a slope with full load.

[0004] The existing maintenance method is generally manual observation with the naked eye, but because the underground environment is dark and the visibility is poor, workers cannot discover the problem in time. Utility Model Content

[0005] The utility model aims at the deficiencies in the prior art and provides a monorail crane driving wheel wear state detection system to solve the problem that the monorail crane driving wheel wear cannot be detected in time.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A monorail crane driving wheel wear state detection system includes a controller, an alarm, a display screen, a hydraulic oil pump, a solenoid valve, a clamping hydraulic cylinder and a displacement sensor, wherein:

[0008] Before and during the travel of the monorail crane, the clamping hydraulic cylinder clamps the driving wheel on the track;

[0009] The displacement sensor is installed inside the clamping hydraulic cylinder to detect the telescopic position data of the piston in the clamping hydraulic cylinder;

[0010] The displacement sensor is electrically connected to the signal input terminal of the controller;

[0011] The hydraulic oil output port of the hydraulic oil pump is connected to the oil inlet port of the clamping hydraulic cylinder;

[0012] The solenoid valve is arranged in the oil circuit between the hydraulic oil pump and the oil inlet of the clamping hydraulic cylinder;

[0013] The signal output end of the controller is electrically connected to the hydraulic oil pump, the solenoid valve and the alarm;

[0014] The display screen is electrically connected to the controller.

[0015] The controller is a PLC control box, wherein:

[0016] The PLC control box is connected to the alarm via a CAN bus;

[0017] The PLC control box is connected to the display screen via Ethernet;

[0018] The PLC control box is drivingly connected to the hydraulic oil pump via a control motor.

[0019] The alarm is a voice alarm.

[0020] The display screen is a touch display screen.

[0021] The displacement sensor is a magnetostrictive displacement sensor.

[0022] The piston rod in the clamping hydraulic cylinder has a hollow rod cavity, the sensor housing of the magnetostrictive displacement sensor is threadedly connected to one end of the cylinder body of the clamping hydraulic cylinder, and the built-in sensor rod on the magnetostrictive displacement sensor extends into the cylinder body of the clamping hydraulic cylinder and is inserted into the hollow rod cavity of the piston rod.

[0023] The utility model proposes a monorail crane driving wheel wear state detection system. Before and during driving, the driver of the monorail crane will clamp the driving wheel on the track with a clamping hydraulic cylinder. The utility model sets a displacement sensor in the clamping hydraulic cylinder to detect the telescopic position data of the piston in the clamping hydraulic cylinder and transmit the position data to the PLC control box. If the position data is found to be too small, it means that the driving wheel is seriously worn. At this time, the monorail crane cannot drive. If it is in the process of driving, the monorail crane will stop. The PLC control box will control the voice alarm to broadcast the message that the driving wheel is seriously worn, and a prompt window will pop up on the touch screen.

[0024] The utility model monorail crane drive wheel wear state detection system solves the problem that the wear of the drive wheel of the underground monorail crane cannot be discovered in time, and ensures the continuous detection of the drive wheel by the locomotive before and during operation. It saves the driver's time to get off the vehicle to check whether the friction wheel is worn, improves the stability and safety of the monorail crane during operation, and reduces the failure caused by the failure to timely detect the wear of the drive wheel during the production process of the monorail crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 The utility model is a control principle diagram of a monorail crane driving wheel wear state detection system.

[0026] Among them, 1 is a PLC control box; 2 is a voice alarm; 3 is a touch screen; 4 is a motor; 5 is a hydraulic oil pump; 6 is a solenoid valve; 7 is a clamping hydraulic cylinder; and 8 is a displacement sensor.

[0027] Figure 2 It is a schematic diagram of the connection structure between the magnetostrictive displacement sensor and the clamping hydraulic cylinder;

[0028] Among them, 7-1 is the piston rod; 7-2 is the spring; 7-3 is the cylinder body; 8-2 is the sensor housing;

[0029] Figure 3 for Figure 2 AA section view;

[0030] Among them, 8-1 is the sensor rod built into the sensor; 8-2 is the position magnet. DETAILED DESCRIPTION

[0031] The technical solution of the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] Figure 1 The utility model is a control principle diagram of a monorail crane driving wheel wear state detection system.

[0033] The monorail crane driving wheel wear state detection system comprises a PLC control box 1, a voice alarm 2, a touch screen 3, a motor 4, a hydraulic oil pump 5, a solenoid valve 6, a clamping hydraulic cylinder 7 and a displacement sensor 8.

[0034] Before the monorail crane moves, the motor 5 will be started to drive the hydraulic oil pump 6, and then the solenoid valve 7 will be opened to supply oil to the clamping hydraulic cylinder 8. Before and during the travel of the monorail crane, the clamping hydraulic cylinder will clamp the driving wheel on the track, and the displacement sensor 8 installed inside the clamping hydraulic cylinder 7 will transmit the telescopic position data of the cylinder to the PLC control box 1.

[0035] like Figure 2 and Figure 3 As shown, in the utility model, the displacement sensor 8 is a magnetostrictive displacement sensor of model RH5 MA 0300 M01D60 1A010, the piston rod 7-1 in the clamping hydraulic cylinder has a hollow rod cavity, the sensor housing 8-2 of the magnetostrictive displacement sensor is threadedly connected to one end of the cylinder body 7-3 of the clamping hydraulic cylinder, and the built-in sensor rod 8-1 on the magnetostrictive displacement sensor extends into the cylinder body of the clamping hydraulic cylinder and is inserted into the hollow rod cavity of the piston rod.

[0036] The PLC control box 1 determines the wear state of the friction wheel by reading the data of the displacement sensor 8. If the displacement data is found to be too small, it means that the driving wheel is seriously worn. At this time, the monorail crane cannot travel. If it is in the process of travel, the monorail crane will stop.

[0037] The monorail crane will always maintain the pressure of the clamping cylinder during driving, and the displacement sensor 8 will send the telescopic position data of the cylinder to the PLC control box 1 in real time, which can ensure the continuous monitoring of the wear degree of the monorail crane driving wheel.

[0038] When the PLC control box 1 detects that the driving wheel is excessively worn, it will control the voice alarm 3 through the CAN bus to broadcast the message that the monorail crane driving wheel is excessively worn.

[0039] When the PLC control box 1 detects that the driving wheel is excessively worn, it will control the touch screen 4 through Ethernet communication, and a message indicating that the driving wheel of the monorail crane is excessively worn will pop up on the touch screen.

[0040] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. A monorail crane drive wheel wear state detection system, characterized in that: It comprises a controller, an alarm, a display screen, a hydraulic oil pump (5), a solenoid valve (6), a clamping hydraulic cylinder (7) and a displacement sensor (8), wherein: Before and during the travel of the monorail crane, the clamping hydraulic cylinder (7) clamps the driving wheel on the track; The displacement sensor (8) is installed inside the clamping hydraulic cylinder (7) to detect telescopic position data of the piston in the clamping hydraulic cylinder (7); The displacement sensor (8) is electrically connected to a signal input terminal of the controller; The hydraulic oil output port of the hydraulic oil pump (5) is connected to the oil inlet port of the clamping hydraulic cylinder (7); The solenoid valve (6) is arranged on the oil circuit between the hydraulic oil pump (5) and the oil inlet of the clamping hydraulic cylinder (7); The signal output end of the controller is electrically connected to the hydraulic oil pump (5), the solenoid valve (6) and the alarm; The display screen is electrically connected to the controller.

2. The monorail crane driving wheel wear state detection system according to claim 1 is characterized in that: The controller is a PLC control box (1), wherein: The PLC control box (1) is connected to the alarm via a CAN bus; The PLC control box (1) is connected to the display screen via Ethernet; The PLC control box (1) is drivingly connected to the hydraulic oil pump (5) via a control motor (4).

3. The monorail crane driving wheel wear state detection system according to claim 1 is characterized in that: The alarm is a voice alarm (2).

4. The monorail crane driving wheel wear state detection system according to claim 1, characterized in that: The display screen is a touch display screen (3).

5. The monorail crane driving wheel wear state detection system according to claim 1, characterized in that: The displacement sensor is a magnetostrictive displacement sensor.

6. The monorail crane driving wheel wear state detection system according to claim 5, characterized in that: The piston rod in the clamping hydraulic cylinder has a hollow rod cavity, the sensor housing of the magnetostrictive displacement sensor is threadedly connected to one end of the cylinder body of the clamping hydraulic cylinder, and the built-in sensor rod on the magnetostrictive displacement sensor extends into the cylinder body of the clamping hydraulic cylinder and is inserted into the hollow rod cavity of the piston rod.

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