SU481697A1

SU481697A1 - Hydraulic Drill Head Shock Rotary Action

Info

Publication number: SU481697A1
Application number: SU1894154A
Authority: SU
Inventors: Борис Петрович Кретов; Виталий Демьянович Павлов; Александр Григорьевич Лазуткин; Дмитрий Никитович Ешуткин; Анатолий Игнатьевич Пименов
Original assignee: Карагандинский политехнический институт; Всесоюзный научно-исследовательский горно-металлургический институт цветных металлов
Priority date: 1973-03-21
Filing date: 1973-03-21
Publication date: 1975-08-25

Description

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Изобретение относитс к горной промышленности , а именно к рабочим органам установок дл бурени скважин.The invention relates to the mining industry, namely to the working bodies of drilling installations.

Известна гидравлическа бурова головка ударно-вращательного действи с приводом от одного объемного насоса, включающа редуктор , ограничитель расхода жидкости, состо щий из подпружиненного клапана и седла, и гидроподъемное ударное устройство с гидромотором вращател , последовательно подключенного в напорную или сливную магистраль и содержащее порщень-блок с расположенным внутри него подпружиненным золотником .A hydraulic drill head of a rotary percussion action driven by a single displacement pump is known, including a reducer, a fluid flow limiter consisting of a spring-loaded valve and a seat, and a hydraulic lifting impactor with a rotator hydraulic motor connected in series to the discharge or drain line and containing a spraying unit with spring loaded spool inside.

Однако в известных гидравлических буровых головках отсутствует возможность регулировани ими скорости вращени бурового инструмента, они мало эффективны и имеют низкий КПД работы.However, in the known hydraulic drill heads there is no possibility to control the rotation speed of the drilling tool, they are of little efficiency and have a low efficiency of operation.

Цель изобретени - обеспечение возможности регулировки скорости вращени бурового инструмента и повышение КПД его работы .The purpose of the invention is to provide the ability to adjust the speed of rotation of the drilling tool and increase the efficiency of its operation.

Это достигаетс тем, что ограничитель расхода жидкости снабжен гидравлическим сопротивлением , подвижно установленным в седле и подключен параллельно к гидромотору вращател .This is achieved by the fact that the fluid flow limiter is equipped with a hydraulic resistance, which is movably mounted in the saddle and connected in parallel to the hydraulic motor of the rotator.

На чертеже изображена схема гидравлической буровой головки ударно-вращательного действи .The drawing shows a diagram of a hydraulic drilling head of a rotary percussion action.

Бурова головка включает корпус 1 с размещенным в нем редуктором, выходным валом которого вл етс шпиндель 2, л естко соединенный с буровым инструментом, поршень-боек 3, в центральной расточке которого находитс иодпружиненный двухпозиционный золотник 4, и гидромотор 5, вал которого соединен с входным валом редуктора.The drill head includes a housing 1 with a gearbox housed therein, the output shaft of which is a spindle 2, firmly connected to the drilling tool, a firing piston 3, in the central bore of which there is an iodine spring two-position spool 4, and a hydraulic motor 5 whose shaft is connected to the inlet gear shaft.

Поршень-боек и корпус образуют напорную 6, сливную 7 и аккумулирующую 8 камеры. Параллельно гидромотору 5, включенному последовательно в напорную магистраль, подключен ограничитель расхода жидкости, включающий клапан 9 и 10.The firing piston and the housing form a pressure head 6, a drain 7 and an accumulator 8 chambers. In parallel with the hydraulic motor 5, connected in series to the pressure line, a fluid flow limiter is connected, including a valve 9 and 10.

При включении насоса лсидкость под давлением поступает в напорную камеру 6 через ограничитель расхода, клапан 9 которого от седла пружиной 10, и перемещает поршень-боек 3 вправо, так как золотник 4 в этот период занимает левое положение и отсекает напорную камеру б от сливной 7.When you turn on the pump, fluid pressure enters the pressure chamber 6 through the flow limiter, the valve 9 of which is spring 10 from the saddle, and moves the firing piston 3 to the right, as the spool 4 in this period takes the left position and cuts the pressure chamber b from the drain 7.

Claims

At the same time, the gas in chamber 8 is compressed and pushes the waste liquid from chamber 7 into the drain line before connecting channel 11 with chamber 6. Thereafter, the pressurized fluid enters control chamber 12 of the gold box 4 and moves it to the right position. As a result, chambers 6 and 7 are connected, the pressure in them is equalized and the piston firing 3 under pressure of gas in chamber 8 is rapidly moving to the left, the liquid is displaced from the pressure chamber 6 to the drain 7, before colliding with the spindle stem

2. During the period of accelerated movement of the piston-bass 3 to the left, the spool 4 is held in the right position by the force of inertia and the rest of its mass. As soon as the spool 4 is moved to the right position, the pressure line is connected to the drain, and the valve 9, overcoming the resistance of the spring 10, sits on the saddle, as the flow rate through the flow limiter is increased due to the elastic properties of the magistral and fluid. As a result, the liquid from the pump can flow into the pressure chamber 6 in parallel through the hydraulic motor 5 and the central opening 13, the hydraulic resistance of which is controlled by the needle 14. The liquid from the pump enters the working chambers of the motor for as long as the valve 9 is in the seat. During the period of the collision of the piston-bite 3 with the spindle stem, the valve 4 moves under the action of springs and inertial forces to the left position, the compartment of the pressure chamber 6 from the drain 7, as a result the fluid flow through the flow limiter is briefly stopped and the spring 10 pushes valve 9 off the seat, freeing the passage of fluid into the pressure chamber 6 to bypass the motor 5. Then the cycle repeats. The invention of the Hydraulic Drill Head of a rotary action driven by a single volumetric pump, including a reducer, a liquid-flow restrictor consisting of a spring-loaded valve and a seat, and a hydrostatic impact device with a rotator hydraulic motor connected in series to a pressure or drain line and containing a piston-piston manure. with a spring-loaded spool located inside it, characterized in that, in order to provide the possibility of adjusting the speed of rotation of the drilling tool and Accelerating efficiency of its operation, the liquid flow restrictor is provided with a flow resistance which is movably mounted in the saddle, and is connected in parallel to the hydraulic motor rotator.

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