What are the types of coal mine hydraulic bracket

Coal mine hydraulic bracket types, model parameters detailed explanation

Coal mine hydraulic bracket is one of the important equipment in the coal mine operation, at present the hydraulic support as the main underground mining equipment, has gradually to program control, remote control, automation, intelligent direction, so what are the types and models of coal mine hydraulic support? This article will provide a detailed introduction.

The development history of coal mine hydraulic bracket

The prototype of coal mine hydraulic bracket appeared in the 1950s, basically using wooden pillar, wooden roof beam or metal friction pillar articulated roof beam to support the roof.

By 1954, the first hydraulic bracket was produced and developed in the UK, and the hydraulic bracket was developed in China in the 1960s, but it was not promoted and applied.

Then to the 1970s China imported dozens of sets of hydraulic brackets, after 10 years of application, imitation and summary experience, after the 1980s, China’s hydraulic bracket development, production and application have been rapidly developed, and more than 20 different specifications of hydraulic brackets such as TD series, ZY series and ZZ series have been developed and produced continuously.

In the early 1990s, the advanced coal mining method-putting top coal technology was adopted to suit the resource conditions of mining areas.

At present, in large and medium-sized mines in China, coal seams with suitable conditions are mined by hydraulic supports for comprehensive mechanized mining, and coal mines have achieved greater comprehensive benefits.

Types of hydraulic brackets for coal mines

Hydraulic brackets are divided into end hydraulic brackets and intermediate hydraulic brackets according to their position in the coal mine operation.

End hydraulic bracket is installed at the two ends of each coal mining working face, also known as end bracket.

The bracket installed in all positions other than the end of the working face is the intermediate hydraulic bracket, which can be divided into three basic types according to its structural form, namely the support type, cover type and support cover type, in addition to the specific type of hydraulic bracket according to specific needs.

Below I have summarized the characteristics, advantages and disadvantages and applicability of various types of coal mine hydraulic brackets for you.

Characteristics, advantages and disadvantages and applicability of various types of hydraulic brackets for coal mines

The model parameters of coal mine hydraulic bracket are explained

People are more concerned about the model parameters of the coal mine hydraulic bracket, the next to explain in detail for you.

Coal mine hydraulic bracket model more, involving more parameters factors, such as: bracket type, bracket model, height, width, center distance, initial support force, work resistance, bottom plate pressure, support strength, pumping station pressure, etc..

Among them, the bracket type, which is the type of coal mine hydraulic bracket we talked about above, the following is the detailed type.

Among the bracket types include cover type bracket, electro-hydraulic control cover type bracket, support cover type bracket, roofing coal release bracket, cover type roofing coal release bracket, support cover type transition bracket, roofing coal release transition bracket, end bracket, overrun bracket, filling bracket, row head bracket, laying net bracket, pallet bracket, masonry wall bracket ……

Due to the many parameters involved, there are 14 types of bracket types like the above, and there are different models under each bracket type, about 40 or 50 models. In addition, different companies will have different model naming, so the model number may be different, but other parameters such as height, width, etc. are the same, so although the naming is different, but in fact the model number is one, the following is a company production of coal mine hydraulic bracket as an example, to show you the model parameters of coal mine hydraulic bracket for your reference and use.