SU949196A1

SU949196A1 - Powered support for steeply sloping seams

Info

Publication number: SU949196A1
Application number: SU803216918A
Authority: SU
Inventors: Леонид Григорьевич Могилевский; Гавриил Иванович Зайцев; Владимир Иванович Ивко; Ханан Матвеевич Дубров; Валерий Анатольевич Овчаренко
Priority date: 1980-12-16
Filing date: 1980-12-16
Publication date: 1982-08-07

Description

(54) МЕХАНИЗИРОВАННАЯ КРЕПЬ ДЛЯ КРУТЫХ ПЛАСТОВ(54) MECHANIZED FASTENER FOR CLOSED LAYERS

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Изобретение относитс к горному делу, конкретно к механизированным креп м дл крутых пластов.The invention relates to mining, specifically to mechanized supports for steep seams.

Известна механизированна крепь дл крутых и наклонных пластов, состо ща из однотипных двухстоечных секций, домкратов передвижени и системы телескопических межсекционных св зей 1.The known mechanized lining for steep and inclined formations consisting of two-column sections of the same type, movement jacks and a telescopic intersectional system 1.

Недостаток этой крепи состоит в том, что из-за отсутстви принудительного складывани штанг имеют место заклинивани секций крепи.The disadvantage of this lining is that due to the lack of forced folding of the rods, the lining sections are jammed.

Наиболее близкой к изобретению по технической сущности и достигаемому результату вл етс механизированна крепь дл крутых пластов, включающа секции, гидродомкраты передвижени и межсекционные гидродомкраты св зи, шарнирно закрепленные на смежных секци х 2.Closest to the invention to the technical essence and the achieved result is a mechanized support for steep formations, including sections, hydraulic jacks of movement and intersection hydraulic jacks of communication, hinged on adjacent sections 2.

Недостаток этой крепи заключаетс в невозможности ее использовани в забо х с наклоном более 13° из-за заклинивани секций при передвижкеThe disadvantage of this support is the impossibility of its use in the forks with an inclination of more than 13 ° due to the jamming of the sections when shifting

Цель изобретени - расширение области применени крепи путем увеличени возможного наклона фронта ее к забою и исключени заклиниваний.The purpose of the invention is to expand the field of application of lining by increasing the possible inclination of its front to the face and eliminating seizures.

Указанна цель достигаетс тем, что межсекционные гидродомкраты св зи выполнены с дополнительными гидравлическими полост ми и установленными в них дополнительными щтоками, причем дополнительные гидравлические полости межсёкционных гидродомкратов св зи сообщены с их щтоковыми полост ми, а дополнительные щтоки при полностью сомкнутых гидродомкратах передвижени выдвинуты из межсекционных гидро10 домкратов св зи.This goal is achieved by the fact that the intersection hydraulic jacks of communication are made with additional hydraulic cavities and additional brushes installed in them, and the additional hydraulic cavities of intersection hydraulic hydraulic jacks of communication are communicated with their hydraulic cavities, and communication jacks.

На фиг. 1 показана механизированна крепь, вид в плане; на фиг. 2 - перемещаема и смежные с ней секции крепи, вид в плане .FIG. 1 shows a mechanized lining, a plan view; in fig. 2 - movable and lining sections adjacent to it, plan view.

Механизированна крепь состоит из секций 1, гидродомкратов передвижени 2 и межсекционных гидродомкратов св зи 3, щарнирно закрепленных на смежных секци х крепи со стороны забойной и завальной их части. Каждый межсекционный гидродом20 крат св зи 3 снабжен дополнительной полостью А, в которой установлен дополнительный щток 4.The mechanized lining consists of sections 1, movement hydraulic jacks 2 and intersection hydraulic coupling jacks 3, which are hinged on adjacent sections of the support from the side of the downhole and downhole part. Each intersection hydrodom 20 fold link 3 is provided with an additional cavity A in which an additional brush 4 is installed.

Claims

In the initial position, the supports, i.e., when the hydraulic jacks of movement are closed, additional rods 4 are extended from the intersectional hydraulic jacks of communication. The additional cavity A of the intersectional hydraulic coupling junction is separated from its piston cavity B by the partition 5 and communicated with the COBOY cavity B. This intersectional communication provides an increase in the clearance for moving the sections by an amount equal to the double stroke of the additional stem 4. The sections are moved as follows . The section to be moved is unloaded and the jack 2 moves to the bout. At the same time, the working fluid under pressure is supplied to the rod B and the additional A cavity of both intersection hydraulic jacks of communication 3 located immediately below the movable section. The supply of pressure to these cavities is necessary to ensure the automatic maintenance of the intersectional intervals. Piston B, the stock C and the additional A cavity of both intersectional hydraulic coupling jacks, located above the movable section, are connected to a drain. If the shortest distance between the attachment points intersectional jacks communication on sections lining disposed immediately above and below the slide, It appears less than two lengths intersectional jacks communication with extended additional rods 4, additional rods upper intersectional jacks communication utaplivayuts, do not interfere with the movement of the section. If the h values of the stroke of the upper intersectional hydraulic coupling jacks are not enough to prevent the section from jamming during movement, then under the action of the movement of the movement jack there is a forced retraction of the rods 4 of the lower intersectional hydraulic coupling jacks. After the passage of the critical position, the slots 4 of the lower intersectional hydraulic jacks of communication are automatically extended, thereby providing an intersectional interval. The increase in cross-sectional gaps in the crepe allows to increase the nominal angle of inclination of its front and thereby expand the scope of application, as well as eliminate jamming of the sections. This improves the technical and economic performance of the lining. Claims of the invention: Mechanized roof support for steep seams, comprising sections, hydraulic jacks of movement and intersectional hydraulic jacks of communication, hinged on adjacent sections, characterized in that. the purpose of extending the field of application of lining by increasing the possible inclination of its front to the face and eliminating jamming, intersection hydraulic jacks are made with additional hydraulic cavities and additional rods installed in them, and additional hydraulic cavities of intersectional hydraulic jacks are communicated with their rod cavities, and additional rods at fully closed hydraulic jacks of movement are advanced from intersection hydraulic jacks of communication. Sources of information taken into account in the examination 1. USSR author's certificate number 178330, cl. E 21 D 23/00, 1964.

2. Ivanov I. F. and others. Mechanized complexes of the CGD. Donetsk, Donbass, 1975, p. 9, 17 (prototype).

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