RU2470139C1 - Swivel of drilling machine - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention refers to machine building industry and can be used in systems of drilling machines, and namely for connection of rotating base of rods with fixed sleeve of drilling machine, via which air-and-water mixture is supplied. Swivel of drilling machine includes an adapter for sleeve, housing and a nipple installed in the housing. Housing is provided with built-in sleeve adapter. Rod adapter is crewed on the nipple end. Flanges are made on rod adapter and nipple so that housing and damper rings can be installed between them. Cuffs supported with rings are installed between internal wall of housing and external wall of nipple.

EFFECT: invention allows reducing the wear of swivel seal; besides, reducing the hazard of emergency air leak from swivel of drilling machine and therefore, improving reliability and increasing service life of drilling machine swivel, thus considerably reducing the costs for its repair and service.

2 dwg

Description

The invention relates to the field of mechanical engineering and can be used in drilling rig systems, in particular for connecting a rotating rod end to a fixed sleeve of a drilling rig through which an air-water mixture is supplied.

A known clutch [1], connecting the end of a rotating stav rod with a sleeve, which is an air-water mixture. Moreover, it contains a housing that has an external tapered thread for wrapping it in a rod. A nipple is inserted inside the housing, under the side of which a sealing gasket is laid, pressed against the housing by a nut. At the end of the nipple, a square (adapter for the sleeve) is screwed, having a thread for attaching the sleeve. When the stavka rotates, the coupling rotates with it, with the exception of the nipple with the adapter for the sleeve. Compressed air enters the sleeve inside the sleeve and presses the gasket against the side of the nipple.

The main disadvantages of the known technical solution is the lack of sealing provided by this design of the coupling, the rapid wear of the gasket, which leads to uncontrolled leakage of air from the coupling, and as a result, the coupling of the drilling rig quickly becomes inoperative.

The technical task of the invention is the elimination of these disadvantages by changing the design of the coupling (hereinafter swivel) of the drilling rig, and implement this solution in the most simple and relatively cheap way.

The problem is solved due to the fact that in the design of the swivel of the drilling rig containing the adapter for the sleeve, the housing and the nipple installed in the housing, according to the invention, the housing is made with an integrated adapter for the sleeve, the adapter for the rod is screwed onto the end of the nipple, while on the adapter for the rod and nipples are made flanges with the possibility of installing between them a housing and shock-absorbing rings, between the inner wall of the housing and the outer wall of the nipple installed collar cuffs supported by rings.

The specified set of features allows to reduce the wear of the swivel seal, while reducing the risk of emergency air leakage from the swivel of the drilling rig and, accordingly, increasing the reliability and service life of the swivel of the drilling rig, significantly reducing the cost of its repair and maintenance.

The essence of the technical solution is illustrated by an example of a specific design and figure, where Fig. 1 shows a longitudinal section of a swivel of a drilling rig, and Fig. 2 shows a cross section of a swivel of a drilling rig.

Swivel of the drilling rig (Figs. 1 and 2) an adapter for a sleeve 1, a housing 2 mounted in the housing 2 of a nipple 3 with holes 13, an adapter for a rod 4 having a thread onto which the drill rod is screwed is screwed onto the end of the nipple 3 the adapter for the rod 4 and the nipple 3 is made of flanges 5, 6 with the possibility of installing between them a housing 2 and shock absorbing rings 7, the collar cuffs 8 are made with the edges 14 and installed between the inner wall 9 of the housing 2 and the outer wall 10 of the nipple 3, supported by rings 11, 12. The inner wall 9 of the housing 2 and eshney wall 10 of the nipple 3 is formed by a cavity 15 bounded on the ends 8 of collar cuffs.

Swivel drilling rig works as follows.

The swivel of the drilling rig is mounted on the drilling rig. Through the adapter for the sleeve 1, an air-water mixture is supplied under pressure to the housing 2, which through the holes 13 in the nipple 3 enters the cavity 15 formed by the inner wall 9 of the housing 2 and the outer wall 10 of the nipple 3. The air-water mixture acts on the collar cuffs 8 installed from the ends of the cavity 15 and bursting the edges 14 of the cuffs 8, presses them against the walls of the cavity 15, this ensures a good seal and prevents leakage of the air-water mixture from the coupling. The cuffs 8 support the rings 11, 12, insuring them against loss. Two shock absorbing rings 7 are installed on the edges of the housing 2 between the flanges 5, 6 to prevent the axial movement of the housing 2 with the cuffs 8. Also, the air-water mixture through the Central hole of the nipple 3 and the adapter for the rod 4 is fed into the drill rod for hammer work. Simultaneously with the supply of the air-water mixture to the drill rod, rotation is also transmitted from the drilling rig, while the nipple 3 and the adapter for the rod 4 are rotated, the remaining parts of the swivel remain stationary.

Using the proposed improvements in the design of the swivel for the drilling rig can reduce the wear of the swivel seal, while reducing the risk of emergency air leakage from the swivel of the drilling rig and, accordingly, increase the reliability and life of the swivel of the drilling rig, significantly reducing the cost of its repair and maintenance.

Information sources

1. P. M. Emelyanov “Universal drilling semiautomatic device NKR-100”, under the editorship of N.N. Esina, Novosibirsk 1961, pp. 57-58.

Claims (1)

A drilling machine swivel comprising an adapter for the sleeve, a housing and a nipple installed in the housing, characterized in that the housing is made with an integrated adapter for the sleeve, an adapter for the rod is screwed onto the end of the nipple, while flanges are made on the adapter for the rod and nipple with the possibility of installing between casing and shock-absorbing rings, between the inner wall of the casing and the outer wall of the nipple installed collar cuffs supported by rings.

Images