Fault Diagnosis and Alarm Method of Rail Wheel Braking System of Port Machinery

Abstract

The invention discloses a method for fault diagnosis and alarm of a rail wheel brake system of a port machine, comprising step 1: stopping the port machine and powering off the whole machine; step 2: installing a brake in each port machine rail wheel brake (3) Proximity switch BG, and connect each proximity switch BG to the port machine PLC module (1); Step 3: Connect the shunt overcurrent switch BR to the coil of each port machine rail wheel brake and connect it to the port machine PLC In the module; step 4: judge the performance of the port machinery rail wheel brake; if it is abnormal, return to step 1, and execute step 5 normally; step 5: power on the whole port machinery, the cart is running, and return the brake status signal to the port machinery PLC module; step 6: Judge the braking performance of the rail wheel brake of the port machinery; if it is normal, the cart will continue to run, if it is not normal, go to step 7; step 7: alarm, and return to step 5 after the fault is solved. The invention can detect the brake failure in time and give an alarm to locate the failure point, greatly shortens the troubleshooting time and improves the operation efficiency of the port machinery.

Description

technical field [0001] The invention relates to a braking control method of a port machinery rail wheel, in particular to a fault diagnosis and alarm method for a port machinery rail wheel braking system. Background technique [0002] At present, port machinery (hereinafter referred to as port machinery) is mostly used for the loading and unloading of steel products such as cold coils, hot coils and steel plates. It is responsible for the whole port machine walking along the wharf cart track. The operation of the port machine cart mechanism is driven by multiple motors at the same time to drive the cart rail wheels. A rail wheel brake is installed on the upper part of each motor, and the rail wheel brake is opened or closed. Realize the operation or braking of port machinery. [0003] The working principle of the cart mechanism is as follows: the operator operates the cart handle in the port machinery cab, and issues the port machinery cart operation or stop command, the op...

AI Technical Summary

Problems solved by technology

[0005] Under high-intensity operating loads, the mechanism of the port machinery cart moves frequently. After working for a long time, the internal rail wheel brake of the motor often jams and the brake cannot be opened. This not only leads to abnormal wear of the brake pads, but also seriously causes the internal coil of the motor to burn out

The powder after the brake pads are worn will also enter the terminal to cause a short circuit of the brake DC power supply module, and the damage of the DC power supply module will cause the main switch to trip suddenly, resulting in the failure of the port machine to continue working

As there are 16 motors installed in the port machinery, the daily maintenance of the rail wheel brakes inside the motors is relatively difficult. If the brake system of the port machinery cart mechanism fails, the entire port machinery cart mechanism will be in a state of braking out of control, which is extremely serious. Major accidents that may cause the port machine to hit the hull or capsize

The braking system of the port machinery truck adopts a relatively primitive power supply method, which cannot prevent, judge and alarm many problems existing in the braking system, and the failure rate of the braking system is relatively high

[0006] At present, there is no good inspection method for HAECO rail wheel brakes, and once a brake failure occurs, it is impossible to find out which brake has a problem in time

There are two main methods to check the working performance of the brake. The first method is to listen to the sound. When the brake is opened, there will be a slight metal impact sound. Due to the noisy environment and the relatively close distance between adjacent brakes, it is difficult to distinguish this sound. There is a slight sound, so it is impossible to accurately judge whether the brake is open; the second is to observe with the naked eye, there is an observation hole with a diameter of 15mm on the top of the brake to check the status of the brake, but because the range of action of the brake is small, generally between 5mm-8mm, consider Due to safety factors, people must keep a safe distance of 1m from the running equipment, so maintenance personnel cannot make accurate observations with the naked eye

The problem of the brake has been unable to be solved. Due to the fault of the brake, the fault of the braking system of the cart has frequently occurred. At present, there is no good solution

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