Now with the application of the single hydraulic prop, people are more and more fond of it. Let ’s first understand what is the single hydraulic prop that people love.
The single hydraulic prop is composed of a cylinder block, a movable pillar, a valve and the like. The three-purpose valve is the heart of the external injection type single hydraulic prop, which is composed of a check valve, an unloading valve and a safety valve king. The one-way valve is used for liquid supply of the single hydraulic prop, and the unloading valve is used for unloading the single hydraulic prop back to the column. The above everyone understands the introduction of the single hydraulic prop, but it is easy to be damaged before and after it is used. Then let's analyze what causes the damage easily.
1. Overdue use
The single-use hydraulic prop is used overtime. Due to the long-term wear of the components, the support performance is greatly reduced. The failure to organize timely overhaul of wells has accelerated the aging of the props and brought great potential safety hazards to production.
2. Improper handling operations
In recent years, the newly installed coal mining face, the individual hydraulic well props have been overhauled and pressure tested, and they are all qualified. These large numbers of props have repeatedly crashed during many transportation links of loading and unloading. Caused damage to the single hydraulic prop.
3. Improper use
Improper use of the coal mining face is also the main cause of damage to the single hydraulic prop. Hard hit with a sledgehammer, causing human damage. In addition, the use of ultra-high props also easily leads to the cylinder being out of cylinder. In the artillery mining face, too many drugs were fired and no protective measures were taken, and the prop collapse occurred from time to time. There is no special moving equipment. Almost all the hydraulic props are used to lift the conveyor. The lateral stress on the waist of the prop is too large, and the mechanical damage is very serious.
4. Poor quality of emulsified oil
The emulsified liquid with proper concentration is used as the working medium of the single hydraulic prop, which has the functions of lubrication, anticorrosion and rust prevention, which can effectively protect the single hydraulic prop and prolong its service life. However, in use, the operator often reduces the concentration of the emulsion without authorization. Due to the low concentration of the emulsion, the prop is easily corroded and damaged, which shortens the service life. At the same time, in recent years, some fake and inferior emulsified oils have been used in mines. When used, the degree of emulsification is poor, and it is easy to block the three-way valve orifices and affect the use of props.
