SU883396A1

SU883396A1 - Drilling machine chuck

Info

Publication number: SU883396A1
Application number: SU802890591A
Authority: SU
Inventors: Владимир Афанасьевич Сухоруков; Виктор Павлович Звягин
Original assignee: Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Угольный Институт
Priority date: 1980-01-03
Filing date: 1980-01-03
Publication date: 1981-11-23

Description

ff

Изобретение относитс к горной промьшшенности, в частности к буровым станкам дл бурени скважин в подземных услови х.The invention relates to the mining industry, in particular to drilling rigs for drilling wells in underground conditions.

Известен патрон бурового станка, включающийштангу, шпиндель, стакан с вертикальными и горизонтальными пазами дл захвата выступов штангиKnown cartridge drilling rig, including the rod, spindle, glass with vertical and horizontal grooves to capture the protrusions of the rod

пз.pz.

Недостатком этого устройства вл етс трудность совмещени прорезей с выступами штанги и невозможность применени автоматики дл наращивани гстава штанг.A disadvantage of this device is the difficulty of aligning the slits with the protrusions of the rod and the inability to use automation to build up the rod.

Наиболее близким техническим решением к предлагаемому вл етс патрон бурового станка, включгшвдий корпус , в котором размещена обойма с радиальными полост ми дл зажимных плашек буровой штаиги, гидроцилиндр привода плашек с поршнем и штоком и гидромагристраль Г2.The closest technical solution to the proposed one is the chuck of a drilling machine, including a housing in which a holder with radial cavities for clamping dies of the drilling rod, a hydraulic cylinder for driving the dies with a piston and a rod and a hydraulic interface G2 are placed.

Однако применение этого патрона предполагает применение штанг с цилиндрической поверхностью хвостовика . При передаче больших крут щих моментов наблюдаетс проскальзывание зажимных плашек, всд1едствие чего на поверхности штанг образуютс задирыHowever, the use of this cartridge involves the use of rods with a cylindrical surface of the shank. When transmitting large torques, slipping of the clamping dies is observed, all of which are formed on the surface of the rods.

Увеличение силы прижати ведет к поломке плашек и см тию труб. Кроме того, задиры и заусеницы травмоопасны, а четырехугольна форма хвостовика необходима дл установки ключа-подхвата , удерживсиощего став при навинчивании и свинчивании штанг.An increase in the pressing force leads to breakage of the dies and the destruction of pipes. In addition, scoring and burrs are traumatic, and the quadrangular shape of the shank is necessary for the installation of the key-pickup, keeping it strong when screwing and screwing the rods.

10 Цель изобретени - повышение надежности захвата штанг при передаче крут щего момента большой величины.10 The purpose of the invention is to increase the reliability of the capture of rods when transmitting a large torque.

Поставленна цель достигаетс тем, что плашки выполнены в виде от ,с дельных пластин- плунжеров , расположенных в радиальных полост х обоймы, которые сообщены с гидромагистралью. Кроме того,пластины-плунже хл в сечении имеют форму усеченного клинаThe goal is achieved by the fact that the plates are made in the form of, from individual plunger plates located in the radial cavities of the holder, which are connected to the main line. In addition, the plate-plunger chl in the cross section have the shape of a truncated wedge

п сопр женного с пр моугольником, при этом пр моугольные части пластинплунжеров размещены в радиальных полост х обоймы. Пластины-плунжеры в верхней части выполнены с овальныff ми фасками.conjugated with a rectangle, with the rectangular parts of the plunger placed in the radial cavities of the yoke. Plunger plates in the upper part are made with oval-shaped chamfers.

На фигЛ изображена компановка на траверсе бурового станка; на фиг.2 - патрон бурового станка, разрез , на фиг.З - сечение А-А наFIG. Depicts a line up on the traverse of the drilling machine; figure 2 - cartridge drilling machine, the section, fig.Z - section aa on

Claims

2Q figure 2. The device includes a housing 1 of cylindrical shape, which is installed on the traverse 2 of the drilling machine. A sealing ring 3 is installed in the housing 1; it has labyrinths 4 and an aperture 5. On the inner surface of the sealing ring 3 an oil groove is selected for supplying oil from the hydraulic main to the casing 7. In the casing 7 there are radial cavities 8 for passing oil to the clamping plates. , made in the form of plates-plungers 9 and associated with hydraulic cylinders (not shown). The clip 7 is installed in the bearings 10. Drill rod 11 is equipped with pins 12, the upper of which keeps becoming in the grip 13 when screwing and unscrewing. In order to more reliably hold the rod 11 at high feed forces during well drilling from top to bottom, a fork 14 is used, pulled out by a jack 15. The rods are fed to the drilling axis using a manipulator 16. The plunger plates 9 in cross section have the shape of a truncated wedge 16, matched with the rectangle 17, while the rectangular parts of the plunger plates are placed in the radios “d. In the upper part of the plate-plungers are made with oval chamfers. The device works as follows. When the cartridge is fed up, the tail of the rod 11, clamped in the manipulator 16, pushes the plungers 9 apart. After the shank has completely entered the cartridge along the hydraulic line, oil is fed through the holes in the holder 7. Under the pressure of the oil, the plunger plates 9 move and squeeze the drill rod 11. Due to the fact that the cartridge dies are made in the form of plates, they can shift relative to each other and cover the end of the rod with its end surface regardless of its shape. This ensures reliable retention of the bar and prevents slippage. Next, the fork 14 moves up, then the claws of the manipulator 16 are opened and the chuck delivers the rod 11 installed and clamped in it to connect with the shank of the previous drill rod standing at pick-up 13. After the connection is reached, the lift 13 is removed and the drilling is continued. When drilling, the system works in reverse order. Making the dies of the cartridge in the form of individual plates-plungers eliminates the possibility of slipping of the dies during the transmission of large torques and increases the reliability of operation of the cartridge. The oval chamfers at the top of the plunger plates eliminate the rear {: 1 and barbs on the shanks of the rods, and the safety of labor is increased. Claim 1. A drill rig cartridge comprising a housing in which a cage with radial cavities for clamping dies of a drill rod is placed, a hydraulic cylinder for driving dies with a piston and a pin and a hydraulic rod, which is different from the fact that, in order to maintain a reliable grip when transferring a twist of large magnitude, the dies are made in the form of individual plates-plungers located in the radial cavities of the holder, which are communicated with the hydraulic manifold. 2. Patron POP.1, characterized in that the plunger plates in cross section have a truncated wedge mated to a rectangle, while the rectangular portions of the plunger plates are located in the radial cavities of the yoke. 3. A cartridge according to claim 1, characterized in that the plunger plates in the upper part are made with oval chamfers. Sources of information taken into account in the examination 1. The author's certificate of the USSR I 201277, cl. E 21 C 15/00, 1965.

2. Authors certificate of the USSR 170022, cl. E 21 C 3/34, 1964 (prototype).