Adjustable temporary supporting apparatus for coal mine having secondary limiting function

Abstract

The present invention discloses an adjustable temporary supporting apparatus for a coal mine having a secondary limiting function, comprising a basal body, a fixed sleeve rod, a mounting piston, an air supply hose, a movable block and a fixed frame. The fixed sleeve rod is embedded and the mounted at the outer end of the basal body, and a first chute is formed in the outer side of the fixed sleeverod; a first gear is connected to a bearing on the inner side of the basal body; and a second gear is embedded and mounted on the inner surface of the basal body. In the adjustable temporary supporting apparatus for the coal mine having the secondary limiting function, as a support frame is automatically unfolded during being stressed, a traction rope in butt joint to a shaft end thereof drives aconnection frame to move inward to abut against the outer end of a thread rod for strengthened supporting; moreover, when the upper end of the apparatus is stressed, a pressed first airbag supplies air to a second airbag, so that the second airbag is deformed for secondary supporting of a support frame and the inner end of the connection frame; and moreover, the stress of the upper end of the apparatus is greater, the secondary support force of the bottom of the support frame is greater.

Description

technical field [0001] The invention relates to the technical field of coal mine tunnels, in particular to an adjustable temporary support device for coal mine tunnels with a secondary limit function. Background technique [0002] With the continuous development of my country's industrialization technology and the continuous improvement of coal mining technology, coal mines are areas where human beings mine coal resources in coal-rich mining areas, and it is more important to adapt to the process of mining inside coal mines. Protective devices are used to avoid dangerous situations such as landslides. Among them, temporary support devices are one of the more common objects. However, the existing temporary support devices for coal mines still have certain defects, such as: [0003] 1. For example, a new coal mine underground support device whose publication number is CN209040872U, through the setting of lighting lamps, it plays the role of lighting, increases the brightness of...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide an adjustable temporary support device for coal mines with a secondary limit function, so as to solve the problem in the above-mentioned background technology that the preliminary support work can only be carried out on the inside of the mine. Stable secondary support work under the original support structure leads to certain defects in the support stability of the device, and the support range is relatively limited, resulting in collapse and other adverse phenomena, which are prone to falling of gravel Unfavorable phenomena, which will increase the burden on the user's escape. At the same time, most of the devices are fixed, which cannot stably meet the installation needs of different locations.

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