What is the role of the coal mine hydraulic bracket,2022 must learn

Commonly used coal mine hydraulic bracket column mainly includes double telescopic column, single telescopic column, mechanical extension column, DW type external injection monoblock hydraulic pillar.

What is the use of coal mine hydraulic bracket column? Pay attention to these keys so that you save time and effort

What is the role of coal mine hydraulic bracket column

Coal mine hydraulic bracket production, low cost, can effectively reduce physical labor, improve the coal mining production process and working environment, is to accelerate the development of China’s coal industry, significantly improve production efficiency, to achieve the modernization of coal industry important equipment, but also the development direction of China’s coal industry technology.

So, as the main accessories of the coal mine hydraulic bracket, what exactly is the use of coal mine hydraulic bracket column, what are the advantages, and what are the key points to note when using it? Now I’ll share with you a little knowledge of the coal mine hydraulic bracket column, I hope it will help you.

Coal mine hydraulic bracket column is mainly composed of cylinder body, live column, guide sleeve and various seals.

coal mine hydraulic bracket column
coal mine hydraulic bracket column

Coal mine hydraulic bracket column

Coal mine hydraulic bracket column is to connect the roof beam and the base, to bear the load of the roof plate, is the main bearing parts of the bracket. It is the main load-bearing part of the bracket. It bears the roof load and the pressure of increasing resistance, and transmits and releases the roof pressure. It prevents the roof plate from falling, keeps the working space, ensures the safety of workers and the normal operation of all work.

It can realize a whole set of processes such as supporting, cutting the roof, moving the frame and pushing the conveyor. Practice shows that hydraulic support has the advantages of good support performance, high strength, fast moving frame, safety and reliability. It is an indispensable and effective measure to improve coal production, reduce cost, improve labor productivity, reduce workers’ physical labor and ensure safety productivity. So it is said that the coal mine hydraulic bracket column is technically advanced, safe and reliable, and can realize the comprehensive mechanization of coal mining and the indispensable equipment accessories of white movement.

What are the commonly used coal mine hydraulic bracket column

Commonly used coal mine hydraulic bracket column mainly includes double telescopic column, single telescopic column, mechanical extension column, DW type external injection monoblock hydraulic pillar.

Double telescopic column

The double telescopic column has a large range of height adjustment, is a full two-stage hydraulic stepless height adjustment, convenient and flexible operation, complex structure, high processing requirements, and relatively high cost. It is mostly used in thin coal seams and large high mining, and the working medium used is emulsion. No pollution to the environment, excellent performance. Reliable quality. Meet the hydraulic support safety performance requirements.

Single telescopic column

Single telescopic column has the advantages of higher height adjustment range, low cost and high reliability, but it is not as convenient to use as double telescopic column.

Additional trivia: Single and double telescopic columns are mainly used in different coal mining working faces, which can be used with metal articulated roof beams or as point columns alone to meet different coal seams. If certain safety measures are adopted, the range of use can be extended to inclined recovery working face with inclination angle of 25°~35°, which ensures sufficient support strength, thus improving the recovery rate, reducing coal mining cost, lowering the labor intensity of workers and improving automation to ensure the safety of workers.

Mechanical Extension Pole Column

Mechanical extension pole column is to compensate the column height by installing extension pole on the hydraulic bracket column when the support height of the bracket cannot meet the requirements of the recovery height. In the general working face where the coal seam thickness does not change much, the extension bar is adjusted to the required height at the time of installation, and then during the recovery process, only the hydraulic stroke of the live column is adjusted with the change of the mining height, and the length of the extension bar is no longer adjusted. Only when the change of coal seam height exceeds the hydraulic stroke of the live column, the extension rod has to be adjusted.

DW type externally injected monoblock hydraulic pillar

DW type externally injected mono-hydraulic pillar is a kind of externally supplied liquid constant resistance pillar, which is used in conjunction with HDJA or HDJC metal roof beam for the support of the plate at the working face of the coal mine, and also for the support of the end of the comprehensive mining and comprehensive release working face or temporary support.

coal mine hydraulic bracket
coal mine hydraulic bracket

Advantages of hydraulic bracket column for coal mine

Coal mine hydraulic bracket column pay attention to these keys so that you use it to save time and effort

  1. When the column is recovered, insert the unloading handle into the unloading hole of the right valve of the triple-use valve, turn the unloading handle, forcing the valve sleeve, connecting screw and liquid injection valve body to move axially, compressing the unloading valve spring and unloading valve pad to leave the sealing surface of the left valve cylinder, the unloading valve is opened, the working fluid in the cavity of the column overflows through the left valve, and the column retracts under the action of self-weight and reset spring to complete the column recovery.
  2. Check the parts carefully before use for any defects affecting the use, and then install and use them. It is forbidden to hit the column with metal objects such as hammers during maintenance, especially to prevent the plating of the live column from being hit.
  3. the column is not allowed to adjust and disassemble the repair in the well, and if there is a failure, it can only be replaced with qualified components of the same type.
  4. the appropriate grade of emulsified oil should be used according to different water quality, and the emulsion should be prepared according to the oil-water ratio of 5:95, and its performance should be checked frequently in the process of use.
  5. column stored for more than three months, to check whether the emulsion in the column is deteriorated, such as deterioration should be replaced, when using the evacuation method should check the rust corrosion.
  6. the column in the process of use should pay attention to and ensure that the joint seat is not damaged, the transport packaging must be strong and reliable. Column in the process of transportation should be. Lightly loaded and unloaded, pay special attention to the joint seat to avoid damage to the interface, affecting the use of the column.

The above is about the coal mine hydraulic bracket column knowledge, I hope this knowledge can help you, what else you want to know about the machinery and equipment? Can give us a message!

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