SU977761A1

SU977761A1 - Boom swinging gear for drill rig

Info

Publication number: SU977761A1
Application number: SU813294364A
Authority: SU
Inventors: Николай Тимофеевич Грицаев; Сергей Егорович Зернюков; Геннадий Миронович Алексеев
Original assignee: Всесоюзный Научно-Исследовательский И Проектно-Конструкторский Институт Горнорудного Машиностроения
Priority date: 1981-05-27
Filing date: 1981-05-27
Publication date: 1982-11-30

Description

Изобретение относитс к горной промьЕшенности, в частности к буровым установкам.The invention relates to the mining industry, in particular to drilling rigs.

Известен механизм поворота стрелы буровой установки, включающий корпус/ в который на подшипниках помещен вал, соединенный со стрелой и несущий на себе зубчатое колесо, вход щее в зацепление с зубчатой рейкой, причем, концы зубчатой рейки снабжены поршн ми , помещенными в стаканы силовых цилиндров, закрепленных на корпусе механизма поворота.A known mechanism for rotating a boom of a drilling rig includes a housing in which a shaft is placed on bearings, which is connected to the boom and carries a gear that engages with a rack, and the ends of the gear rack are equipped with pistons placed in glasses of power cylinders, mounted on the body of the rotation mechanism.

При работе этой установки в зацеплении зубчатого колеса и рейки возникает распорное усилие, под действием которого на концах рейки (т.е. на поршн х) возникают усили , направленные перпендикул рно оси силовых цилиндров . Эти усили создают момент, стрем щийс вырвать стакан цилиндра из заделки в корпусе, и момент, изгибающий стакан силового цилиндра.When this installation is in operation, a thrust force arises in the gearing of the gear and rail, under the action of which forces arise at the ends of the rail (i.e., on the pistons) that are directed perpendicular to the axes of the power cylinders. These forces create a moment tending to tear the cylinder glass out of the seal in the body, and the moment bending the glass of the power cylinder.

Дл обеспечени работоспособности механизма крепление стаканов силовых цилиндров к корпусу механизма выполн ют в виде мощных шпилек или болтов, а стаканы выполн ют из толстых .To ensure the operability of the mechanism, the fastening of the glasses of the power cylinders to the mechanism housing is carried out in the form of powerful studs or bolts, and the glasses are made of thick ones.

Недостатки механизма поворота стрелы заключаютс в усиленном креплении стаканов силовых.цилиндров к корпусу механизма поворота, значительных габаритах деталей креплени , большой толщине стенок силовых цилиндров и высокой металлоемкости механизма вследствие больших габаритов деталей креплени силовых цилиндров к корпусу механизма и большой толщины стенок стаканов силовых цилиндров.Disadvantages of the boom swing mechanism are reinforced fastening of the power cylinder glasses to the turn mechanism body, considerable dimensions of fastening parts, large wall thickness of the power cylinders and high metal intensity of the mechanism due to the large dimensions of the fastening parts of the power cylinders to the body frame and a large wall thickness of the power cylinders.

10ten

Наиболее близким по технической сущности и достигаемому результату к предлагаемому вл етс механизм поворота стрелы буровой установки, включающий спаренные силовые цилинд15 ры с размещенными внутри зубчатыми рейками, наход щимис в зацеплении с зубчатым колесом, установленныг в корпусе механизма поворота, скрепл ющем середины силовых цилиндров 21.The closest to the technical essence and the achieved result to the proposed is a mechanism for rotating the boom of the drilling rig, including twin power cylinders with gear racks inside, which are in engagement with the gear wheel mounted in the body of the turn mechanism fastening the middle of the power cylinders 21.

2020

Недостатком вл етс высока металлоемкость и низка надежность работы.The disadvantage is the high metal consumption and low reliability.

Цель изобретени - повгаиение надежности работы и.снижение металлоемкости .The purpose of the invention is the reliability of operation and the decrease in metal intensity.

2525

Claims

To achieve this goal, in the mechanism of boom rotation of the drilling rig, which includes paired power cylinders with placed inside racks, which are in engagement with the gear wheel installed in the case of the rotation mechanism fastening the middle of the power cylinders, the outer ends of the power cylinders are rigidly attached to each other. The outer ends of the power cylinders are made with spikes and are connected by means of a bar planted on the spikes. In FIG. 1 shows the rotation mechanism, a longitudinal section; in fig. 2 is a view along arrow A in FIG. 1. The boom swinging mechanism comprises a housing 1, in the trunnion 2 of which, on bearings (not shown), is mounted a shaft 3 connected to a boom (not shown). On the shaft 3, a gear wheel 4 is engaged, which is in engagement with two gear racks 5. The ends of the gear rails are equipped with pistons b placed in glasses 7 of power cylinders 8 and 9. Power cylinders 8 and 9 with one ends are fixed on housing 1 with bolts 10, and their opposite ends are provided with covers 11 with cylindrical spikes 12. The studs 12 of the power cylinders 8 and 9 are rigidly interconnected by pairs of strips 13 and fixed by nuts 14. Arrow B - direction of movement of the pressure flow of the working medium, arrow C of the discharge flow for turning the gear th wheel in a clockwise direction. The turning mechanism works in the same way. Under the action of the working medium, the toothed rack 5 moves to the right, to the bottom to the left, rotating the gear 4 in a clockwise direction. At the same time, in engagement there are spacer forces, under the action of which forces arise at the ends of the rails (pistons) that are directed perpendicularly to the axes of the power cylinders 8 and 9. These forces in each glass create a moment, which tends to pull it out of the embedment in the housing and bending glass. However, the rigid connection of the ends of the cylinder cups with the slats 13 forms a closed power circuit, as a result of which the glasses mutually unload each other from the moment the glass is pulled out of the seal and significantly reduce the bending of U1 (the moment in the cups. cylinders, reducing the size of the hull and reducing the metal. Improving the reliability of the mechanism, due to the reduction of loads acting in the termination and housings, cylinders Firewood. Claim 1. The mechanism of rotation of the boom of the drilling rig, including twin power cylinders with internal gear racks, which are in engagement with a gear wheel mounted in the body of the turn mechanism, fastening the middle of the power cylinders, characterized in that increase of reliability of work and decrease in metal intensity, the ends of power cylinders are rigidly fastened with each other.

2. The mechanism according to claim 1, characterized in that the ends of the power cylinders are made with spikes and are connected by means of a bar planted on the spikes. Sources of information taken into account in the examination 1. USSR author's certificate on application no. 2729586 / 22-03, l. E 21 C 11/02, 1978.