As a support equipment, hydraulic support is widely used in mining engineering. Hydraulic support generally includes guard plates, top beams and other components. Due to the large size and complex surface structure of hydraulic support, it is a structure used to control the mine pressure of coal mining working face. The mine pressure of the mining face acts on the hydraulic support in the form of external load. In the mechanical system of interaction between hydraulic support and mining face surrounding rock, if the combined force of each support of the hydraulic support and the combined force of external load acting on the hydraulic support by the top plate are exactly in the same straight line, then the hydraulic support is very suitable for the surrounding rock of this mining face.
In the past, in coal mine production at home and abroad, wooden pillars, wooden top beams or metal friction pillars articulated top beams were basically used to support the roof. Since the hydraulic support was first developed in the UK in 1954, it has been widely used in coal mine working faces because it can reduce the occurrence of mine collapse incidents and greatly improve the safety of coal mine operations. At the same time, with the gradual advancement of machinery replacing manual labor, the hydraulic support is also one of the most important equipment in the comprehensive mechanized coal mining method.
Coal mine hydraulic support cleaning refers to the process of cleaning and maintaining the hydraulic supports used underground in coal mines. The cleaning work mainly includes removing coal dust, mud and other impurities on the surface of the support to prevent pollution and accumulation from affecting the normal operation of the support. In addition, the hydraulic support also needs to be fully cleaned before maintenance. On the one hand, it is easy to disassemble, and on the other hand, it is to expose the original appearance of the hydraulic support, so as to facilitate the observation of the overall condition of the support and ensure the smooth progress of the maintenance work.
In the past, hydraulic supports were cleaned by using brushes, water spray pipes and other tools to remove dust, particles and attachments on the surface of hydraulic supports. If necessary, appropriate cleaning agents were needed to help dissolve stubborn oil and dirt. This cleaning method often requires manual participation, has slow cleaning efficiency, poor cleaning quality, high labor intensity for workers, and will cause certain environmental pollution problems.
At present, some coal mines have begun to try to use automated equipment to clean hydraulic supports to improve cleaning efficiency and quality and reduce manual participation. Guang yuan Cleaning Equipment has independently developed and put into use a set of high-pressure water hydraulic support automatic cleaning lines, which are composed of unloading area, conveying track, conveying cart, closed cleaning room, cleaning manipulator, ultra-high pressure cleaning machine, water storage tank, mud and water classification system, slag storage tank and other equipment.
After the one-button start system, the hydraulic support is placed on the traction flatbed by the driving crane, and the traction flatbed automatically moves to the cleaning station. The six-axis manipulators on both sides of the cleaning station clamp the cleaning nozzle group to perform circular cleaning on the hydraulic support. The nozzle rotates automatically to ensure that the surface of the hydraulic support is scanned and struck in an equidistant and all-round manner; the mud and water after cleaning are separated by the mud and water separation system, and the separated water can be recycled. During the cleaning process, wastewater can be avoided from flowing across, and the cleaning site environment can be kept clean. The whole process can complete the coal slime removal operation with high efficiency, high quality, high energy saving and environmental protection.
Guang yuan cleaning equipment high-pressure water hydraulic support through-type automatic cleaning line uses the huge impact force of high-pressure water jets to quickly and strip dust, oil and other dirt on the surface of the hydraulic support, effectively reducing manual participation and improving the consistency of cleaning quality. Compared with manual cleaning, automated equipment reduces the labor intensity of workers. Workers only need to operate and monitor the equipment, and no longer need to scrub or spray in person, which improves the overall cleaning efficiency and quality, reduces labor intensity, and improves operation safety.
