Large-step step along the top single-column support group

Abstract

The invention discloses a large-step-pitch along-roof walking single column support set. The large-step-pitch along-roof walking single column support set comprises bases. A plurality of vertical columns are hinged to the bases. A column adjustment jack is connected between each vertical column and the corresponding base. The multiple vertical columns are arranged into a single row and multiple lines or multiple rows and a single line or multiple rows and multiple lines. Column top caps are arranged at the top ends of the vertical columns, oval cambered surfaces making contact with the top ends of the vertical columns are arranged on the lower portions of the column top caps, and anti-slipping cone columns are arranged on the tops of the column top caps. The multiple bases are arranged and hinged to one another. Pull jacks and pull rods are arranged in front of the bases. The large-step-pitch along-roof walking single column support set is stable and flexible, and large supporting height, self-movement and continuous supporting can be achieved.

Description

technical field [0001] The invention relates to a coal mine roadway supporting device, in particular to a single-column supporting group of a step-along top stepping type with a large step distance. Background technique [0002] At present, advanced supports have been widely used in the roadway support of modern mines. In order to prevent repeated support to the roof, the advanced supports have gradually developed into a large-step moving method. , Three-level guard support. Such as figure 1 As shown, because the telescopic beam or the side is narrow, it is difficult to fully support, especially between the end bracket and the advanced bracket, there will be a large area of ​​unsupported area. [0003] In order to support the roof of the roadway in this area, some mining areas use narrow brackets. Due to the up and down movement of the scraper machine, the use of narrow brackets has problems of insufficient stability and flexibility. Therefore, narrow brackets are rarely u...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, due to the narrow telescopic beam or the side, it is difficult to fully support, especially between the end bracket and the advanced bracket, there will be a large area of ​​unsupported area

[0003] In order to support the roof of the roadway in this area, some mining areas use narrow brackets. Due to the up and down movement of the scraper machine, the use of narrow brackets has problems of insufficient stability and flexibility. Therefore, narrow brackets are rarely used now.

[0004] In the existing technology, for the maintenance of the roof of the roadway in this area, most of the single pillars are used. However, the use of single pillars is inefficient, requires more labor, and does not match the speed of modern mechanized production. It has become an obstacle that affects the advancement of the working face. an important factor

Especially for the support of ultra-high roadways, such as 6-meter-high roadways, due to the limitation of single height (generally no more than 4.5 meters), it is necessary to adopt methods such as stacking wood under the roof, which seriously affects the production efficiency of the working face

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