Hydraulic support and its top beam

Abstract

The invention relates to the technical field of hydraulic supports, and discloses a hydraulic support and a top beam thereof. The hydraulic support top beam includes a top plate and a hinged seat located at the rear end of the bottom surface of the top plate, and also includes a rib structure extending in the front and back direction on the bottom surface of the top plate, and the rib structure is bent by opposite sides of the steel plate Formed, the bent parts on both sides of the rib structure are fixed on the bottom surface of the top plate. After implementing the technical solution of the present invention, the efficiency of the manufacture and assembly of the top beam can be effectively improved, the cost can be reduced, the problems of complicated assembly and large amount of welding in the prior art can be solved, and a relatively small box height or volume can be achieved. A large moment of inertia means that the height or volume of the top beam can be reduced under the condition of meeting the predetermined strength, so that the use space of the hydraulic support can be increased.

Description

technical field [0001] The invention relates to the technical field of hydraulic supports, in particular to a hydraulic support and its top beam. Background technique [0002] The hydraulic support is the supporting equipment of the fully mechanized mining face, and its main function is to support the roof of the stope and maintain a safe working space. In the prior art, for example, in the Chinese patent document disclosed by the publication number CN102444413A, the top beam of the hydraulic support is mainly composed of a top plate, a cover plate, a plurality of longitudinal main ribs and a plurality of transverse ribs, etc. Welded box structure with beam fit. Specifically, a plurality of longitudinal main ribs are between the bottom surface of the roof and the cover plate and extend longitudinally to the front and rear of the entire roof beam in the front-rear direction. The box structure of the top beam is formed by group butt welding. In addition, in the above-mentio...

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Problems solved by technology

[0003] However, when the above-mentioned top beam is used, it is time-consuming and labor-intensive during the manufacturing and assembly process, such as complicated assembly and large amount of welding, etc.

In addition, the inventors of the present application found that, under a certain strength, the box structure of the above-mentioned top beam needs a larger height or volume to achieve a larger moment of inertia, which usually results in a larger height or volume of the box of the top beam , reducing the bracket space; if the number of parts or the complexity of the top beam is reduced, it may help to improve the efficiency of the top beam manufacturing and assembly and reduce the cost, but it is difficult to ensure that the top beam reaches the corresponding strength, so this is a Dilemma

In addition, the inventors of the present application also found that since the column cap is located between two adjacent longitudinal main ribs, and the longitudinal main ribs extend to the hinge seat at the rear end of the top beam, the hinge point of the hinge seat is affected by two adjacent longitudinal ribs. The distance between the longitudinal main ribs is limited, and the distance and height between two adjacent longitudinal main ribs are limited by the position or size of the column cap, which makes the design of the joint distance extremely inflexible, which is not conducive to the corresponding hydraulic support. expand

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