SU1301984A1

SU1301984A1 - Power support unit

Info

Publication number: SU1301984A1
Application number: SU853982140A
Authority: SU
Inventors: Юрий Николаевич Казак; Владимир Александрович Бреннер; Олег Петрович Фадеев; Борис Иванович Грицаюк; Александр Иосифович Куракин; Александр Трофимович Архипенков
Original assignee: Тульский Политехнический Институт
Priority date: 1985-11-25
Filing date: 1985-11-25
Publication date: 1987-04-07

Abstract

Изобретение относитс к горной промышленности , а именно к оборудованию дл креплени очистных забоев. Цель - повышение эффективности управлени движением секции крепи по кровле пласта за счет снижени усилий при скалывании подкро- вельной пачки угл . Дл этого секци механизированной крепи имеет мультипликатор давлени (МД) 13, а клин 5 скалывател 4 выполнен с осевыми каналами, проход щими через его вершину и соединенные каналом 9. Последний гидролинией 10 через подпорный клапан И соединен с камерой 12 высокого давлени МД 13. Дл подачи воды низкого давлени к секци м крепи камера высокого давлени св зана через обратный клапан 14 с трубопроводом 15. Штокова и поршнева полости низкого давлени МД 13 св заны с напорной 18 и сливной 19 гидролини ми через гидравлически управл емый распределитель 22. Полости 23 и 24 его управлени имеют различный диаметр и соединены гидролини ми 25 и 26 с гидролини ми 21 и 20. Дл управлени гидроцилиндром 16 перемещени скалывател 4 служит распределитель 17. Положение клина 5 по мощности пласта регулируетс гидропатроном 7 через прижимную, балку 6. I ил. с СО С /2 СО о СО СХ) 4:The invention relates to the mining industry, namely to equipment for fixing cleaning faces. The goal is to increase the efficiency of controlling the movement of the lining section along the roof of the seam due to a decrease in the forces when the sub-pile of coal is cleaved. For this, the mechanized support section has a pressure multiplier (MD) 13, and the wedge 5 of the cleaver 4 is made with axial channels passing through its top and connected by channel 9. The latter by means of hydraulic line 10 through the retaining valve I is connected to the high pressure chamber 12 of MD 13. For supplying low pressure water to the support sections of the high pressure chamber is connected via a non-return valve 14 to the pipeline 15. The rod and the low pressure piston cavity MD 13 are connected to the pressure 18 and drain 19 hydraulic lines through a hydraulically controlled distribution divider 22. The cavities 23 and 24 of its control have a different diameter and are connected by hydrolines 25 and 26 to hydrolines 21 and 20. To control the hydraulic cylinder 16 for moving the cleaver 4, the distributor 17 serves as a control of the reservoir 5 through the clamping beam. 6. I il. with CO C / 2 CO about CO CX) 4:

Description

Изобретение относитс к горной промышленности , а именно к механизированным креп м очистных забоев.The invention relates to the mining industry, in particular to mechanized crepe and cleaning faces.

Цель изобретени - повышение эффективности управлени движением секции крепи по кровле пласта за счет снижени усилий при скалывании подкровельной пачки угл .The purpose of the invention is to increase the efficiency of controlling the movement of the lining section along the roof of the reservoir by reducing the forces when the subroofing bundle of coal is split.

На чертеже изображена секци крепи со скалывателем, обеспечиваюшим механическое или механо-гидравлическое отделе- Ю лением в гидросистеме крепи.The drawing shows a lining section with a cleaver providing mechanical or mechanical-hydraulic separation in the lining hydraulic system.

ние подкровельной пачки угл .Обратный клапан 14 закрываетс , отсоедин мультипликатор 13 от трубопровода 15 с водой, открываетс подпорный клапан 11, и вода по гибкому шлангу 10 и каСекци механизированной крепи содержит перекрытие 1, козырек 2, в направл ющих 3 которого размешен выдвижной скалыватель 4 с рабочим элементом в виде налу 9 подаетс в осевые каналы 8, воздей- клина 5. Выдвижной скалыватель 4 опира- ству на уголь.The return valve 14 is closed, the multiplier 13 is disconnected from the water pipeline 15, the retaining valve 11 is opened, and the water along the flexible hose 10 and the mechanized support section contains an overlap 1, a visor 2, in the guides 3 of which a sliding cleaver 4 is placed With the work element in the form of a nal 9, it is fed into the axial channels 8, the impact of a wedge 5. The extendable cleaver 4 is supported by coal.

етс на прижимную балку 6j взаимосв зан-Известно, что при одновременном дейную с гидропатроном 7. Клин 5 снабжен осе- ствии механического инструмента и струи выми каналами 8, соединенными обшим ка- воды под высоким давлением, подводимой налом 9, св занным гидролинией 10 через по осевому каналу, снижаютс усили дл подпорный клапан 11 высокого давлени с 20 внедрени механического инструмента вIt is known that, at the same time, it is effective with hydraulic chute 7. Wedge 5 is equipped with mechanical tool holes and jet channels 8 connected by a common high-pressure cable, fed by pressure gauge 9, connected by hydroline 10 through along the axial channel, the forces for the high pressure retaining valve 11 are reduced from the introduction of a 20 mechanical tool into

разрушаемый массив. При переключении распределител 17 рабоча жидкость под давлением подводитс в канал 20 и осуше- ствл етс холостой ход гидроцилиндра 16, что соответствует подт гиванию секции крени.destructible array. When switching the distributor 17, the working fluid under pressure is supplied to the channel 20 and the idle stroke of the hydraulic cylinder 16 is dried, which corresponds to the tilting of the tilting section.

При этом давление рабочей жидкости существенно ниже, чем при рабочем ходе.The pressure of the working fluid is significantly lower than during the working stroke.

камерой 12 мультипликатора 13 давлени . В свою очередь, камера 12 высокого давлени через обратный клапан 14 св зана с трубопроводом 15 дл подачи воды низкого давлени вдоль очистного забо к секци м кр.епи.pressure chamber 12 of pressure 13. In turn, the high pressure chamber 12 through the check valve 14 is connected to the pipeline 15 for supplying low pressure water along the cleansing hole to the crushing unit section.

Дл управлени гидроцилиндром 16 перемещени скалывател служит распределитель 17, гидравлически св занный с напорной 18 и сливной 19 гидролини ми гидросис25To control the hydraulic cylinder 16 for moving the cleaver, a valve 17 is used, which is hydraulically connected to the pressure 18 and drain 19 hydraulic lines 25.

Рабоча жидкость под пониженным давлением подводитс через гидролинию 26 в потемы механизированной крепи, а через гид- зо 24 управлени распределител 22. Дл The working fluid under reduced pressure is supplied through the hydroline 26 in the flow of the mechanized support, and through the hydraulic control 24 of the distributor 22. For

ролинии 20 и 21 - с гидроцилиндром 16. Штокова и поршнева полости низкого давлени мультипликатора 13 св заны с напорной 18 и сливной 19 гидролини ми гидросистемы механизированной крепи черезrollers 20 and 21 - with hydraulic cylinder 16. The rod and low-pressure piston cavity of the multiplier 13 are connected to the pressure 18 and drain 19 hydraulic lines of the hydraulics of the mechanized support through

преодолени сопротивлени пружины 27, имеющей такую же жесткость, как и пружина 28, диаметр полости 24 управлени прин т больше диаметра полости 23.overcoming the resistance of the spring 27 having the same rigidity as the spring 28, the diameter of the control cavity 24 is larger than the diameter of the cavity 23.

Происходит переключение распределитегидравлически управл емый распредели- 35 л 22, и штокова полость пониженного дав- тель 22, причем его полости 23 и 24 управ- лени мультипликатора 13 соедин етс сThere is a switching distribution of a hydraulically controlled distribution - 35 liters 22, and a rod cavity underpressure 22, and its control cavities 23 and 24 of the multiplier 13 are connected to

напорной магистралью 18, а поршнева -pressure line 18, and piston -

лени имеют различный диаметр и соединесо сливной гидролинией 19. В результате осуществл етс холостой ход мультиплика40Sloths have a different diameter and are connected by drain hydroline 19. As a result, the idling is performed.

тора 13 и его камера высокого давлени через обратный клапан 14 заполн етс водой из трубопровода 15.torus 13 and its high pressure chamber through the check valve 14 is filled with water from the pipeline 15.

Claims

Invention Formula

Hydrolines 25 and 26 with hydrolines 21 and 20. Distributor 22 is equipped with springs 27 and 28.

Section mechanized lining works as follows.

In the initial position, the support section is in the open state. Neotbit by a shearer or plow underframe a bundle of coal cleaves the extension of the 45 section of the mechanized support, including a cleaver, while the working fluid overlap is hinged to the bone under pressure from the pressure hydrolyzed visor, inside which 18 through the hydraulic distributor 17 and the control valves, a retractable rock is installed. The roller line 21 enters a piston cavity in the form of a wedge, and from the cylinder 16 of movement of the cleaver 4. connected with it a hydraulic cylinder of movement. The position of the wedge 5 of the cleaver 4 along the power pipeline for supplying water to the sections, the reservoir is regulated by the hydraulic cartridge 7 pore and drain hydrolines, which differ through the pressure beam 6. so that, in order to increase the efficiency of the splitting of the under-roof control of the movement of the section Because the coal pack does not exceed the permissible level of the roof of the reservoir due to a decrease in the force n, the pressure of the working fluid in the hydraulic section of the under roof pack of coal, line 25 is insufficient for it to be equipped with a meltiplicator ene compression spring 28, the distributor 22, the Maintenance of Stock nym rod and the piston cavities Latter remains in the neutral position, low pressure, chamber High Pressure multiplier 13 is not working. When the splitting force is exceeded, the pressure of the working fluid in the hydrolines 21 and 25 increases proportionally, which leads to the actuation of the distributor 22 and the connection of the piston cavity of the multiplier 13 with the pressure hydraulic line 18, and the rod end of the cavity with the hydroline 19. The working chamber 12 of the multiplier creates an increased Compared to the davdin multiplier 13 from the pipeline 15 with water, the retaining valve 11 opens, and water is supplied through the flexible hose 10 and channel 9 to the axial channels 8, which are acting on coal.

The pressure of the working fluid is significantly lower than during the working stroke.

The working fluid under reduced pressure is supplied via hydroline 26 to 24 of the control valve 22. For

24 distributor controls 22. For

overcoming the resistance of the spring 27 having the same rigidity as the spring 28, the diameter of the control cavity 24 is larger than the diameter of the cavity 23.

The distributor 22 is switched, and the reduced pressure rod cavity of the multiplier 13 is connected to

with flush line 19. As a result, the idling is performed

torus 13 and its high pressure chamber through the check valve 14 is filled with water from the pipeline 15.

Invention Formula

45 The section of mechanized support, including the overlap, which is hingedly connected with the hollow visor, inside of which a retractable rock is installed in the guides. A wedge shaped device and a displacement hydraulic cylinder associated with it. a pipe for supplying water to the sections, the flow and drain lines, characterized in that, in order to increase the efficiency

nor, retaining and non-return valves and guide wire for water supply, and the rod

Equally controlled dispenser, and low pressure piston cavity. In this case, the cleaver is made from an axial extensor and connected to a pressure and drain

channels passing through its top, hydrolines through hydraulically controlled, which are hydraulically connected through substation distributor, control cavities

Porous valve with a high-pressure chamber which is hydraulically connected to the nopniHcni multiplier, which is locked by the cylinder and rod of the hydraulic cylinder

The valve is connected to the mixing pipe of the cleaver.