RU2249666C2 - Quick-collapsible conic connection of conveyers - Google Patents

Abstract

FIELD: drilling equipment engineering.

SUBSTANCE: connection has sleeve, in walls of which in apertures welded bushings are mounted with fixing bolts, nipple, key connections, including keys and grooves. In walls of sleeve in same plane along axis two key grooves are made and two apertures, outputting into the latter, for bushings with holding bolts. In body of nipple of same plane along axis two grooves are made with fixedly mounted therein keys and two apertures for holding bolts.

EFFECT: higher efficiency and simplified manufacture.

1 dwg

Description

The invention relates to drilling equipment, specifically to drilling augers.

The closest analogue adopted for the prototype is known, a quick-detachable conical screw connection containing a coupling, in the walls of which are welded bushings with fixing bolts, a nipple, key connections, including dowels and grooves in the holes (see Express information (Reference information collection) , CJSC "Geoinformation", M., 1999 (Issue 8, p. 22).

In this device, the keys are fixedly mounted (welded) in the grooves of the coupling, and the keyways are made in the body of the nipple, while the keyways and holes for the fixing bolts in the nipple are located in the same section, which significantly reduces the strength of the nipple, respectively, the strength of the quick-release conical connection of the screws. In addition, to groove the grooves for the dowels in the walls of the coupling, it is necessary to drill additional holes for the output of the tool, which are then used to weld the dowels, which complicates the manufacturing technology.

The objective of the invention is to increase the strength of the quick-release conical connection of the screws and simplify the technology of its manufacture.

To solve this problem, in a quick-detachable conical connection of screws containing a coupling, in the walls of which are welded bushings with fixing screws, a nipple, key connections, including dowels and grooves, two keyways and two are made in the same plane along the axis along the axis the holes extending into them, under the bushings with fixing bolts, and in the body of the nipple in the same plane along the axis there are two grooves with dowels fixed in them and two holes for fixing bolts.

The invention is illustrated in the drawing.

The quick disconnect conical connection of the screws contains a sleeve 1, the walls of which have two holes 2. Insert holes 3 into the holes 2, which are welded to the sleeve 1. Fixing bolts 4 are screwed into the bushings 3, which also pass into the holes 5 in the nipple 6. In the walls couplings 1 in the same plane along the axis in which the holes 2 are located, two keyways 7 are made, and the holes 2 extend into the grooves 7. In the walls of the nipple 6 in the same plane along the axis there are two grooves 8 with fixed (welded) in them shp nkami 9 and two openings 5 by the fixing bolts 4. A coil 10 is welded to the screw coupling coil 1. Starting screw 10 is aligned with the groove 7 and the sleeve 3.

The present invention allows to solve the problem.

Indeed, in the proposed device, two keyways 8 with fixed keys 9 and two holes 5 for the fixing bolts 4 are located in the nipple 6 in the same plane along the axis, and in the device adopted for the prototype, they are located in the nipple in one section, which significantly reduces the strength of the nipple. Thus, the proposed quick conical connection of the screws allows to increase the strength of the connection. In addition, when hollowing the keyways 7 there is no need to drill additional holes for the output of the tool (as in the prototype), holes 2 are used for this. Thus, the simplified manufacturing technology is provided in the proposed device.

The device operates as follows.

On the one hand, the sleeve 1 is welded to the pipe 11 (see drawing), on the other hand, the nipple 6.

Then on the coupling 1, the pipe 11 and the nipple 6, the turns of the screw 10 are welded, forming a screw pipe. Connecting screw pipes, we get a screw column.

The quick disconnect conical connection of the augers during drilling transmits torque through the screw connections, while the axial load on the face is transmitted by the end face 12 of the coupling 1 to the step 13 of the nipple 6. When lifting the screw column, the axial load is transmitted through the fixing bolts 4. The tightness of the quick disconnect conical connection is ensured by the ring seal 14. For the screw connection connector, the bolts 4 are turned out of the bushings 3 by 3-4 turns.

The coupling 1 and the nipple 6 are disconnected, and the bolt 4 remains in the sleeve 3.

Thus, the proposed quick-release conical connection of the screws ensures the achievement of the task - increasing strength and simplifying manufacturing technology.

Claims (1)

A quick conical connection of screws containing a coupling, in the walls of which are welded bushings with fixing bolts, a nipple, key connections, including keys and grooves, characterized in that in the walls of the coupling there are two keyways and two holes in the same plane along the axis leaving in them, under the bushings with fixing bolts, and in the body of the nipple in the same plane along the axis, two grooves are made with dowels fixed in them and two holes for fixing bolts.