SU623953A1

SU623953A1 - Mechanism for screwing and unscrewing pipes

Info

Publication number: SU623953A1
Application number: SU721782845A
Authority: SU
Inventors: Геннадий Геннадьевич Горбунов; Николай Нестерович Ляхов; Константин Дмитриевич Лохтин; Лидия Витальевна Куршакова
Original assignee: Иркутское Территориальное Геологическое Управление
Priority date: 1972-05-10
Filing date: 1972-05-10
Publication date: 1978-09-15

Description

(54) МЕХАНИЗМ ДЛЯ СВИНЧИВАНРШ И РАЗВИНЧИВАНИЯ ТРУБ(54) MECHANISM FOR SWINCHING AND PIPE UNLOADING

Изобретение относитс к спускоподъемным операци м при ведении буро-&ЫХ работ.This invention relates to tripping operations when conducting drilling & work.

Известен ключ дл свинчивани бурильных труб, содержащий ручной привод flj.A key for screwing drill pipes is known, comprising a manual flj actuator.

Недостаток его заключаетс в том, что этот ключ нельз использовать от механического привода, так как при реверсивном качении плашки всегда проскальзывают по поверхности трубы в прижатом состо нии и в результате чего преждевременноИзнашиваютс .,The disadvantage of it is that this key cannot be used from a mechanical drive, as in reverse rolling, the dies always slip along the surface of the pipe in the pressed state and, as a result, they get prematurely recognized.

Известен механизм дл свинчивани и развинчивани труб, содержащий привод,соединенный с маховиком, зажимные элементы и рычаг C2J.A known mechanism for screwing and unscrewing pipes, comprising a drive connected to the flywheel, clamping elements and a lever C2J.

Недостаток этбго механизма заключаетс в сложности конструкции и невозможности регулировани крут щего момента при свинчивании и развинчивании труб.The disadvantage of this mechanism lies in the complexity of the design and the impossibility of controlling the torque when screwing and unscrewing the pipes.

Цель изобретени - упрощение конструкции и регулирование крут щего мо- мента.The purpose of the invention is to simplify the design and control the torque.

Предлагаемый механизм снабжен кривошипно-кулиСным механизмом, кривошип которого установлен на маховике, а кулиса соединена с рычагом.The proposed mechanism is equipped with a crank-kulis mechanism, the crank of which is mounted on the flywheel, and the link is connected to the lever.

На фиг, 1 изобрал ен описываемыйFig, 1 depicted described

механизм, вид сб.оку; на фиг. 2 - вид по стрелке А на фиг. 1.mechanism, view sb.oku; in fig. 2 is a view along arrow A in FIG. one.

Механизм дл свинчивани и развинчивани труб содержит привод с черв чным редуктором 1, на выходном валу которого закрепл етс маховик 2 с кривошипом 3; в отверстие кривошипа вставл етс кулиса 4. Головка 5 механизма состоит из шарнирных звеньев 6 с аажимными элементами в виде зубчатых плашек 7. Звень механизма соедин ютс между собой и с рычагом 8 шарнирно , .л поворота рычага 8 вокруг своей оси в положении холостого хоца ограничен регул тором 9. Чтобы во врем работы головка 5 не опускалась , на трубе 1О, крепитс поддерживающее кольцо 11.The mechanism for screwing and unscrewing the tubes includes a drive with a worm gearbox 1, on the output shaft of which the flywheel 2 is fixed with a crank 3; The link 4 is inserted into the crank hole. The head 5 of the mechanism consists of hinged links 6 with clamping elements in the form of gear dies 7. The links of the mechanism are connected to each other and to the lever 8 pivotally, turning the lever 8 around its axis in the idle hotsa position is limited The regulator 9. To prevent the head 5 from falling down during operation, the support ring 11 is attached to the pipe 1O.

Работает механизм следующим образом . Дл свинчивани или развинчивани The mechanism works as follows. For screwing or unscrewing

Claims

threaded connection of pipes Yu hinge-. 362 HX6 links 6 open, head 5 winds up pipe 10 and freely rests on the retaining ring 11, njpri this link 4 should be in the hole and crank 3. When the drive is turned on, the flywheel 2 rotates in the W direction of clockwise or counterclockwise M and thankful to crank 3 converts the vrascious movement into swinging movement of scenes 4. When the flywheel 2 rotates in the direction of the arrow M, the threaded connection is unscrewed, the distance B is in the atom position, from the axis of the pipe 1O to the point of application of the circumferential force therefore, the maximum torque at the breaking connection will be maximal, which is necessary (e at the initial unscrewing moment. At the time of unscrewing the rim, it switches to reverse rotation, and in this position the distance B from the pipe axis to the point of application of the circumferential axis - ly will be the smallest, therefore, the torque in the threaded connection will be minimal, which ensures the safety of threaded connections of the pipes 1O. During the swinging movement, the snout-chag 8 rotates around its axis and acts on the hinge of the mechanism, the pipe H grabs, clamps, and turns in threaded connections; 3; H1 makes a working move. At the moment of idling, the lever 8 rotates around its axis due to the clearance, but its rotation is limited by the abutment 9. In this position, the contact between the dies 7 and the surface of the pipe Yu is absent, and the head 5 makes an idling motion. The screwing of the threaded joint is carried out in a similar way, only for this purpose it is necessary to turn the head5 by 180, with the top part down. The invention The mechanism for screwing and unscrewing the tubes, comprising a drive connected to the flywheel, clamping elements and a lever, characterized in that, in order to simplify the design and adjust the torque, it is equipped with a crank-and-link mechanism, the crank of which is mounted on the flywheel, a.kulisa connected to the lever. Sources of information taken into account in the examination: {1,1 USSR author's certificate | № 92880, cl. Е 21 В 19 / 16,1950.

2. USSR author's certificate, -. No. 113511, cl. E 21 V 19/16, 1954,