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Failure analysis of hydraulic system of lifting platform

by:Powerston     2021-08-03
There are many faults in the hydraulic system of the lifting platform. The hydraulic lifting cage platform is driven by steel wire ropes and is mostly used to transport goods. It is composed of tower, hanging basket, hoist, etc. The tower is generally a truss structure, which is pulled by cables to keep it upright. The hanging basket is welded with section steel and is a container for loading goods. The hoist is fixed on the ground, the wire rope is connected to the gondola through the pulley on the top of the tower, and the gondola is pulled to run up and down, and the operator controls it on the ground. The hydraulic docking bridge is a special auxiliary equipment for fast loading and unloading of goods. Its height adjustment function enables a bridge between the truck and the cargo platform of the warehouse. The forklift and other handling vehicles can directly drive into the truck for bulk loading and unloading through it. Called the loading and unloading platform. platform is a kind of lifting machinery that vertically transports people or objects. It also refers to the equipment for vertical transportation in logistics systems such as factories and automatic warehouses. The lifting platform is often equipped with a variety of flat transportation equipment as a connecting device for conveyor lines of different heights. It is generally driven by hydraulic pressure, so it is called hydraulic lifting cage platform. In addition to transporting goods at different heights, it is widely used in high-altitude installation and maintenance operations. Different hydraulic equipment. The basic circuit of the hydraulic system is different, the composition of the basic circuit is also different, the fault is also different. Some failures in the system are caused by the failure of a certain hydraulic component, and some are caused by several comprehensive factors of the hydraulic components in the system. In many cases, large, destructive faults are accumulated from some small faults. Generally speaking, any failure will be accompanied by abnormal signs, and then it will become a major failure, which can be summarized in the following aspects: 1. Abnormal sounds, such as pumps, motors, safety valves, etc., are abnormal. 2. Turning, walking, winding hydraulic motors and working device cylinders have speed drops and gearboxes. 3. Oil tank hydraulic pressure drop and oil deterioration. 4. Oil leakage occurs on the outer surface of hydraulic components. 5. The oil temperature is too high. 6. Pipeline damage, vibration and damage. 7. Odor and other hydraulic lifting and all these phenomena, as long as you pay careful attention when using it, you can observe with the naked eye, touch your hands and find the smell of the nose. Through this on-site inspection, the user should find out the cause of the failure based on the necessary theory and practical experience in order to repair it as soon as possible. In most cases, when the hydraulic system of the lifting platform fails, it is difficult to find the fault location immediately. Because in the hydraulic system, the phase auxiliary devices and oil of various components are mostly enclosed in the casing and pipeline, the mechanical transmission cannot be directly observed, and the measurement is not as convenient as the circuit. In addition, when the system is running, only the fault phenomenon can be displayed, and the root cause of the fault phenomenon may be multiple. As the complexity of the system and the number of hydraulic components increase, the complexity and complexity of this hydraulic system failure is very obvious. This brings difficulties to detection, and it is often impossible to accurately determine the cause of the failure, that is, repeat analysis and repeated inspections until the cause of the failure is found. In order to more accurately find the fault location of the lifting platform, try to reduce and avoid blindness, and avoid disassembly of parts that should not be disassembled, in actual work, the following steps are usually taken to deal with the failure of the hydraulic system.
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