Two-degree-of-freedom spiral advancing-type temporal bracing device

Abstract

The invention discloses a two-degree-of-freedom spiral advancing-type temporal bracing device. The device includes a bracing top plate, a baseplate and a jacking mechanism connected between the bracing top plate and the baseplate. A rectangular cavity is formed in the bracing top plate, the temporal bracing top plate is arranged in the cavity, and a temporal bracing top plate driving device is installed at the lower end of the bracing top plate; the temporal bracing top plate is driven by the temporal bracing top plate driving device to horizontally move left and right along the inner cavity of the bracing top plate; the bracing top plate adopts a mode of combining a four-rod mechanism with a hydraulic cylinder for driving and can horizontally move in the vertical direction and rotate around a first hinge, and therefore the adaptivity of the top plate is high. The problem that when the ground of a roadway is not parallel to the top surface of the roadway, the entire device tilts easilyis solved. Meanwhile, when the device is moved for erection, auxiliary equipment is not required, each movement pace is large, and bracing is much safer and more reliable; the device has the advantages that the working efficiency is high, the automation degree is high, and the adaptivity to the top surfaces of roadways is high.

Description

technical field [0001] The invention relates to a sliding type temporary support device, in particular to a two-degree-of-freedom spiral advance type temporary support device, which belongs to the technical field of underground mining machinery and equipment. Background technique [0002] With the improvement of the degree of mechanization of coal mining, in order to meet the installation requirements of large-scale fully mechanized mining equipment, the width of cutting holes in many fully mechanized mining faces is designed to be 8m to 10m. For super-large-span cut-out construction, the main form of support for the cut-out in the fully mechanized mining face is shed support. The construction space of the roadway with shed support is small, which makes it difficult to install and construct the support. At the same time, the shed support is a passive support and cannot Effectively improve the bearing strength of surrounding rock finishing, the support method not only has hig...

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the above-mentioned deficiencies in the prior art, the present invention provides a two-degree-of-freedom spiral advancing temporary support device, which is used to solve the problem that the device is prone to overall skew when the roadway ground and the top surface are not parallel, and the frame can be moved at the same time. There is no need for auxiliary equipment, the step distance is large, and the support is safer and more reliable

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