Fault diagnosis alarm method for port machine rail wheel braking system

Abstract

The invention discloses a fault diagnosis alarm method for a port machine rail wheel brake system, the method comprises the following steps of: step 1, stopping the port machine and powering off the whole machine; step 2, installing a proximity switch BG in each port machine rail wheel brake (3), and connecting each proximity switch BG into a port machine PLC module (1); step 3, connecting a shuntovercurrent switch BR to a coil of each port machine rail wheel brake, and connecting the shunt overcurrent switches BR to a port machine PLC module; step 4, judging the performance of the rail wheelbrake of the port machine; if not, returning to the step 1, and normally executing the step 5; step 5, electrifying the whole port machine, running the cart, and returning a brake state signal to theport machine PLC module; step 6, judging the braking performance of the rail wheel brake of the port machine; if so, enabling the cart to continue to run, and if not, executing the step 7; and step 7, giving an alarm, and returning to the step 5 after the fault is solved. The fault of the brake can be found in time, a fault point is alarmed and located, the troubleshooting time is greatly shortened, and the working efficiency of the port machine is improved.

Description

technical field [0001] The invention relates to a brake control method of a rail wheel of a port machine, in particular to a fault diagnosis and alarm method for a brake system of a port machine rail wheel. Background technique [0002] At present, port machinery (hereinafter referred to as port machinery) is mostly used for loading and unloading of steel products such as cold coils, hot coils, and steel plates. Port machinery is mainly composed of four major mechanisms: cart, pitching, trolley, and lifting. Responsible for the entire port machine to walk along the wharf rail. The operation of the port machine cart mechanism is driven by multiple motors at the same time. Rail wheel brakes are installed on the upper part of each motor, which can be opened or closed by the rail wheel brakes. Realize the running or braking of the port machine. [0003] The working principle of the cart mechanism is: the operator operates the handle of the cart in the cab of the port machinery,...

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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