CN-224200673-U - Underground coal mine roof column cutting and circulating supporting device

Abstract

The utility model relates to auxiliary equipment for underground coal mines, in particular to a circulating supporting device for underground cutting jacking posts of a mine, which comprises a supporting connecting plate arranged on the side surface of an end head frame of a hydraulic support, wherein one end of the supporting connecting plate is rotatably connected with one end of the side surface of the end head frame through a limiting pin, the other end of the supporting connecting plate is hinged with an adjusting jack on the side surface of the end head frame, a plurality of cutting jacking posts are arranged on the end surface of the supporting connecting plate in a penetrating mode, a liquid supply system of the adjusting jack and the cutting jacking posts is connected with a liquid supply system of the end head frame in series through a valve group, and the circulating supporting device for the cutting jacking posts is arranged, so that the time for personnel to enter the supporting at the cutting jacking line is shortened, repeated carrying of single body posts is avoided, the labor intensity of the personnel is reduced, the time for the personnel to operate in a small space and a broken section of a top plate is shortened, and the safety coefficient and the working efficiency are improved.

Inventors

• ZHANG ZHIRONG
• ZHANG GUOSHUAI
• WANG LIANG
• GUO ZHENTAO
• CUI ZHENHUA
• QIN CHENGFENG
• YANG JIA

Assignees

• 晋能控股装备制造集团有限公司

Dates

Publication Date

20260505

Application Date

20250606

Claims (5)

1. 1. The utility model provides a colliery is cut jack-up circulation in pit and is established device, its characterized in that, including installing prop up in hydraulic support end frame (1) side and establish connecting plate (2), prop up the one end of establishing connecting plate (2) and rotate through spacer pin (3) and connect in the side one end of end frame (1), prop up the other end of establishing connecting plate (2) and the side of end frame (1) and articulate have adjusting jack (5), prop up the terminal surface of establishing connecting plate (2) and wear to establish and install many jack-up (4), adjusting jack (5) and jack-up (4) feed liquid system are established ties through valves and the feed liquid system of end frame (1).
2. 2. The underground coal mine prop cutting circulation prop-up device according to claim 1 is characterized in that three prop cutting props (4) are installed on the end face of the prop-up connecting plate (2) in an equidistant penetrating mode.
3. 3. The underground coal mine prop cutting circulation prop-up device according to claim 1 is characterized in that four prop cutting posts (4) are installed on the end face of the prop-up connecting plate (2) in an equidistant penetrating mode.
4. 4. The underground coal mine prop cutting circulation supporting device according to claim 1, wherein one end of the limiting pin (3) is welded on the end frame (1), and the other end of the limiting pin (3) is rotatably connected with the supporting connecting plate (2).
5. 5. The underground coal mine prop cutting circulation supporting device according to claim 1, wherein a group of valve groups for adjusting the direction of the prop cutting circulation supporting device and the height of the prop cutting (4) are arranged on the side face of the end head frame (1).

Description

Underground coal mine roof column cutting and circulating supporting device Technical Field The utility model relates to auxiliary equipment for underground coal mines, in particular to a circulating supporting device for underground cutting jacking columns of a mine. Background In the stoping process of the coal mine working face, the stoped area requires the roof to collapse in time so as to ensure that the pressure of the roof in the working area is in a controllable safety range, and after the single hydraulic prop outside the necessary working area is retracted, the roof is required to collapse according to a line required by design, and the boundary line is the roof collapse line, namely the roof cutting line, on the line which is a supporting area and is a roof collapse area. The technical method is used to make the top plate collapse area and the support area and the roof collapse area as the 'roof cutting'. Roof cutting is mainly achieved by constructing single hydraulic struts, which are also called "roof cutting struts". The roof cutting column needs to be supported and retracted circularly along with the pushing of the working face pulling frame. During the period, because the goaf roof is broken, the safety risk is higher when adopting traditional manual setting up, withdrawing monomer hydraulic prop, and still need the manual work to carry out carrying and stacking after the monomer post is retrieved, the efficiency of construction is extremely low. Therefore, a device is needed to be designed to replace manual circulation to prop up and retract the cut jack-up column so as to meet the purposes of man reduction, high efficiency and safety of the underground operation site. Disclosure of Invention The utility model provides a circulating supporting device for underground roof cutting of a coal mine, which aims to solve the technical problems of higher safety risk and extremely low construction efficiency when the traditional single hydraulic prop is manually supported and retracted. The hydraulic prop is used for circularly supporting a prop cutting in the stoping process of the underground fully mechanized mining face of the coal mine, and is a device capable of improving safety guarantee, reducing personnel investment and improving work efficiency. In order to solve the technical problems, the technical scheme includes that the underground coal mine prop cutting circulation prop-up device comprises prop-up connecting plates which are arranged on the side surfaces of end frames of hydraulic supports, one ends of the prop-up connecting plates are rotatably connected to one ends of the side surfaces of the end frames through limiting pins, the other ends of the prop-up connecting plates are hinged with the side surfaces of the end frames, a plurality of prop cutting posts are arranged on the end surfaces of the prop-up connecting plates in a penetrating mode, and a liquid supply system of the prop cutting posts is connected with a liquid supply system of the end frames in series through valve groups. Furthermore, three jacking cutting posts are arranged on the end face of the supporting connecting plate in an equidistant penetrating mode. Furthermore, four cut jacking columns are arranged on the end face of the supporting connecting plate in an equidistant penetrating mode. Furthermore, one end of the limiting pin is welded on the end head frame, and the other end of the limiting pin is rotationally connected with the supporting connecting plate. Further, a group of valve groups for adjusting the direction of the cyclic propping device and the height of the prop are arranged on the side face of the end head frame. Compared with the prior art, the utility model has the following beneficial effects: By installing the jacking column cutting circulation supporting device, the time for personnel to enter the jacking line cutting position for supporting is reduced, repeated carrying of single columns is avoided, labor intensity of personnel is reduced, and safety coefficient is improved. (1) The labor intensity during the operation of personnel can be reduced, and the safety operation is facilitated; (2) The time of personnel operation in a narrow space and a top plate crushing section can be reduced, and the safety guarantee is improved. (3) The device can reduce the labor intensity of staff during operation, improve the working efficiency, is more beneficial to safe operation, can obtain good economic benefit, and can be popularized and applied in the same type of operation period in the coal mine industry. Drawings FIG. 1 is a top view of a coal mine underground cut roof column circulation bracing apparatus. FIG. 2 is an elevation view of a coal mine down-hole roof cutting column circulation support device. The figures are labeled as follows: 1-end headstock, 2-supporting connecting plate, 3-limiting pin, 4-cutting jack post and 5-adjusting jack. Detailed Description The utility model is further il