Novel temporary supporting device for coal mine roadway comprehensive digging face

Abstract

The invention relates to the technical field of coal mine down-hole comprehensive digging face temporary supporting, in particular to a novel temporary supporting device for a coal mine roadway comprehensive digging face. The novel temporary supporting device comprises a left supporting mechanism, a right supporting mechanism, a front supporting leg, a rear supporting leg, a front beam and a telescopic beam. The left supporting mechanism and the right supporting mechanism are integrally connected with a pin shaft through connecting transverse beams, the front beam and a protecting head on beam, and the structure of the left supporting mechanism is the same with that of the right supporting mechanism, and the left supporting mechanism and the right supporting mechanism comprise a base, a guiding beam, vertical pillars and top beams. The vertical pillars are fixed to the base, the top beams are arranged at the tops of the vertical pillars, and a sliding rail is arranged in the base. The front supporting leg and the rear supporting leg are integrally connected through the sliding rail. A supporting top longitudinal beam is arranged on the connecting transverse beams, the connecting transverse beams are fixed to the top beams, and the supporting top longitudinal beam is connected with the telescopic beam through a telescopic oil cylinder. The telescopic beam and the front beam are connected through a front beam jack, the front beam and the protecting head on beam are integrally connected through a protecting head on beam jack, and a pushing oil cylinder is arranged between the base and the front supporting leg. According to the novel temporary supporting device for the coal mine roadway comprehensive digging face, the supporting procedures are simplified.

Description

technical field [0001] The invention relates to the technical field of temporary support for fully mechanized excavation faces in coal mines, in particular to a novel temporary support device for fully mechanized excavation face roadways in coal mines. Background technique [0002] Before the rapid excavation temporary support bracket was developed, the temporary supports commonly used in the underground excavation working faces of most coal mines in China were as follows: one is the temporary support of the hanging ring piercing type front probe beam; the other is the airborne temporary support of the roadheader The third is to use multiple rows of single hydraulic props and high-strength I-beam beam support methods. Although these methods have relieved the pressure of the head-on support of the excavation working face to a certain extent and improved the support condition of the working face, there are still many deficiencies in the actual use process, and there are still ...

AI Technical Summary

Problems solved by technology

[0004] The temporary support of the hanging ring penetrating front beam is mainly composed of the hanging ring and the front beam. The ring is fixed on the roof by the anchor rod, and the front beam is in the ring, protruding out of the rear support roof. ①Use semi-logs and wooden wedges to tighten the steel and the roof. There is no initial support force, and there is a great potential safety hazard; ②The front probe beam and the roof are in point or line contact, and the empty roof area cannot be fully and effectively supported. , if the roof is broken, the effect will be worse; ③The operation process is complicated, manual movement is required, labor intensity is high, the temporary support speed is slow, and the efficiency is low; ④The anchor net support method must enter the empty roof when laying the net Area operation, there is a great safety hazard

Its main defects: ①The support area is small, and the exposed roof cannot be fully supported; ②Operators are still working under the empty roof during anchor net support, which has great potential safety hazards; ③The device has poor adaptability to the roof

When supporting each single hydraulic prop, at least three persons cooperate to carry out temporary support. The labor intensity of the workers is high, the cost is high, the danger of returning to the post is high, there are potential safety hazards, and it affects the passage of personnel and equipment, and the support effect and safety guarantee are not good. ideal

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