Hydraulic support column cap for coal mine

Abstract

The invention discloses a hydraulic support column cap for a coal mine and belongs to the field of hydraulic supports for coal mines. The hydraulic support column cap comprises a base plate and a first installation column and a second installation column which are arranged on the base plate. The first installation column and the second installation column are fixed on the same side of the base plate correspondingly and vertically. An installation hole is formed in each installation column, and a reinforcing block is arranged on the other side of the base plate. The hydraulic support column is simple in manufacture process and simple to install. A guardrail and the columns are in interface fit and ensure that the column cap can be used for hydraulic supports of most types. Meanwhile, the base plate of the column cap is long, and the integrity of a middle beam of the hydraulic support is fully utilized to improve pressure resistance. After the column cap is used, the effect is remarkable, the columns of the support have the reliable support points, and the requirements for support lifting resistance and rated working resistance can be met under the condition that two columns of the support are destroyed.

Description

technical field [0001] The invention relates to the field of coal mine hydraulic support, in particular, the invention relates to a column cap of a coal mine hydraulic support. Background technique [0002] The hydraulic support column cap is located in the gap between the two inner and outer main ribs of the top beam of the hydraulic support. In order to realize the change of the coal mining height of the hydraulic support itself. In addition to bearing the pressure of the roof of the mining area, the top beam of the hydraulic support also bears horizontal friction and lateral force. The force situation is relatively complicated and harsh, and it is easy to be damaged. Therefore, the column cap in the hydraulic support is an important force-bearing part of the hydraulic support. [0003] If the top beam of the hydraulic support is damaged or even penetrated, the support cannot be lifted and moved by itself, and the initial support force is difficult to guarantee, which ...

AI Technical Summary

Problems solved by technology

[0003] If the top beam of the hydraulic support is damaged or even penetrated, the support cannot be lifted and moved by itself, and the initial support force is difficult to guarantee, which brings great safety hazards to the safety management and production of the working face

In the prior art, two single pillars are generally supported under the top beam of the support, but the support force of the single pillar is far less than the rated support force of the hydraulic support pillar, especially when the pressure is cycled, it is difficult to guarantee the initial support force of the support

At the same time, the excessive load on the single pillar for a long time is prone to accidents such as collapse of the pillar and the escape of the three-purpose valve, which poses a serious threat to safe production

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