CN210127832U

CN210127832U - Internal locking type drill rod

Info

Publication number: CN210127832U
Application number: CN201920706664.8U
Authority: CN
Inventors: 卢明立; 刘祥军; 刘攀军
Original assignee: Tianming Nanjing Intelligent Equipment Technology Co ltd
Current assignee: Tianming Nanjing Intelligent Equipment Technology Co ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-03-06
Anticipated expiration: 2029-05-17

Abstract

The utility model provides an interior locking formula drilling rod, relate to drilling equipment technical field, the transmission problem of moment of torsion and pulling force between the mainly used solution drilling rod, male joint and female joint including drilling rod body both ends, be equipped with the biography on the male joint and turn round external splines, be equipped with the biography on the female joint and turn round internal splines, be equipped with spacing circular bead on the male joint of biography outer splines root, be equipped with the installation pipe with one heart in the drilling rod body, the fixed locking joint that has the external screw thread that is equipped with of one end that the installation pipe is close to female joint, the internal thread has been seted up on the male joint inner wall, locking joint is equipped with on being close to the outer wall of external screw thread and compresses tightly the circular bead, be equipped with the retaining ring. The utility model discloses a connected mode of spline and screw thread transmits the moment of torsion respectively and draws pressure, and it is clear and definite to divide the worker, the atress advantage of the different connected modes of full play, its simple structure is reliable, easy dismounting.

Description

Internal locking type drill rod

Technical Field

The utility model relates to a drilling equipment technical field, especially an interior locking-type drilling rod.

Background

At present, the drill rods used by engineering drillers are various in types and can be mainly divided into two main types: telescopic drill rods and non-telescopic drill rods. In the use process of the non-telescopic drill pipe, a section of drill pipe is generally required to be connected so as to increase the drilling depth. The connection mode of the non-telescopic drill rod mainly comprises the following steps: threaded connection, key and transverse pin connection and flange and a plurality of bolts connection. Through the drill rod in threaded connection, the torque that can transmit is relatively less, and can only transmit one-way torque. The flange plate is time-consuming to connect, disassemble and assemble. In the prior art, for example, a quick connection structure of a drill rod of a jumbolter with the publication number of CN203961814U adopts a connection and fixing mode of key connection and insertion of a U-shaped clamp. The connecting structure only fixes two sections of drill rods through the U-shaped clamp, drill slag is easy to enter the U-shaped clamp in the using process to cause difficulty in disassembly, and the U-shaped clamp can fall off from the clamping groove, so that the drill rods are disconnected to interrupt drilling work. Also, for example, CN205577893U discloses a auger stem capable of being screwed in forward and reverse directions, which uses a connection structure with threads and keys, and when it needs to be disassembled, the movable pin outside the reverse key sleeve needs to be pressed inward, so that the pin head of the movable pin presses the elastic piece, and the blocking effect of the elastic piece on the fixed pin is removed. The connecting structure of the spiral drill rod has more parts, more complex structure and inconvenient manufacture and use.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art not enough, provide a simple structure, the leakproofness is good, easy dismounting and the biography is turned round and is transmitted the interior locking-type drilling rod that the pressure performance is good.

The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to an internal locking formula drilling rod, its characteristics are: male joint and female joint including drilling rod body both ends, be equipped with on the male joint and pass and turn round external splines, be equipped with on the female joint and pass and turn round internal splines that external splines match with above-mentioned biography, be equipped with spacing circular bead on passing the male joint of turning round external splines root, be equipped with the installation pipe with one heart in the drilling rod body, the fixed locking joint that has the external screw thread that is equipped with of one end that the installation pipe is close to the female joint, set up the internal thread with locking joint's external screw thread assorted on the male joint inner wall, locking joint is close to and is equipped with on the outer wall of external screw thread and compresses tightly the circular bead, be equipped with the retaining ring between circular bead and biography turn round internal splines root.

Above the utility model relates to an internal locking formula drilling rod, its further preferred technical scheme or technical characterstic are: the rotating pipe mechanism comprises two rotating grooves symmetrically formed in the wall of the mounting pipe.

Above the utility model relates to an internal locking formula drilling rod, its further preferred technical scheme or technical characterstic are: the outer wall of the baffle ring is arranged to be abutted against the inner wall of the drill rod body, and the inner wall of the baffle ring is arranged to be abutted against the outer wall of the locking joint.

Above the utility model relates to an internal locking formula drilling rod, its further preferred technical scheme or technical characterstic are: the length of the installation pipe is not less than 1/2 of the total length of the drill rod body.

Above the utility model relates to an internal locking formula drilling rod, its further preferred technical scheme or technical characterstic are: and a rotary sealing ring is arranged between the installation pipe and the inner wall of the drill rod body.

Compared with the prior art, the utility model discloses following beneficial effect has: the male joint and the female joint of the utility model are matched and spliced together through the transmission external spline and the transmission internal spline, and positive and negative torques can be better transmitted by using the transmission external spline and the transmission internal spline; the locking joint is fixedly connected in the male joint through threads, the retaining ring can be tightly pressed at the root of the internal spline of the torque transmission of the female joint by the locking joint through the pressing shoulder, the axial locking of the male joint and the female joint is realized, the tensile force and the downward pressure can be better transmitted through threaded connection, and the torque can be better transmitted through the spline; the utility model discloses use two kinds of connected modes simultaneously and transmit the moment of torsion respectively and draw pressure, it is clear and definite to divide the worker, the atress advantage of the different connected modes of full play, its simple structure is reliable, easy dismounting.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic front view of the male connector;

FIG. 3 is a schematic front view of the female connector;

in the figure, 1 is a male joint, 2 is a female joint, 3 is a transmission external spline, 4 is a transmission internal spline, 5 is a limiting shoulder, 6 is a mounting pipe, 7 is a locking joint, 8 is an external thread, 9 is an internal thread, 10 is a pressing shoulder, 11 is a retaining ring, 12 is a rotating groove, and 13 is a rotating sealing ring.

Detailed Description

The following further describes embodiments of the present invention in order to facilitate further understanding of the present invention by those skilled in the art, and does not constitute a limitation to the right thereof.

The utility model provides an interior locking type drilling rod, refer to fig. 1, fig. 2 and fig. 3, the public affairs that include drilling rod body both ends are connected, 1 and box 2, be equipped with on the public affairs joint 1 and pass and turn round external splines 3, be equipped with on the box 2 and pass and turn round internal splines 4 with the outer affairs of 3 matches of above-mentioned biography, be equipped with spacing circular bead 5 on the public affairs joint 1 of 3 roots of biography commentaries on classics external splines, be equipped with installation pipe 6 in the drilling rod body with one heart, the fixed locking joint 7 that has external screw thread 8 that is equipped with of one end of installation pipe 6 near box 2, set up on the public affairs joint 1 inner wall with locking joint 7 external screw thread 8 assorted internal thread 9, be equipped with on the outer wall that locking joint 7 is close to external screw thread 8 and compress tightly circular bead 10, be equipped with fender ring 11 between 4 roots of biog. And 6 transmission and torsion

external splines

3 and 6 transmission and torsion internal splines 4 are arranged. The retainer ring 11 may be made of a rigid metal material.

The pipe rotating mechanism comprises two rotating grooves 12 symmetrically formed in the pipe wall of the mounting pipe 6. The locking joint 7 is connected with the male joint 1 through threads by inserting an external installation tool into the rotating groove 12 and driving the installation pipe 6 to rotate.

The outer wall of the baffle ring 11 is arranged to be abutted against the inner wall of the drill rod body, and the inner wall of the baffle ring 11 is arranged to be abutted against the outer wall of the locking joint 7.

The length of the installation tube 6 is 4/5 the total length of the drill rod body.

And a rotary sealing ring 13 is arranged between the mounting pipe 6 and the inner wall of the drill rod body. The rotary seal ring 13 can be arranged on the mounting pipe 6 close to the rotary groove 12, and foreign matters can be prevented from falling into the rotary seal ring 12 to influence the threaded connection between the locking joint 7 and the male joint 1.

When the utility model is used, the male joint 1 of one internal locking drill rod is upward, and then the female joint 2 of the other internal locking drill rod is inserted into the male joint 1 through spline fit; then, an external installation tool is inserted into the rotating groove 12 to drive the locking joint 7 to be in threaded connection with the male joint 1, and meanwhile, the pressing shoulder 10 on the locking joint 7 is utilized to press the retaining ring 11 at the root of the female joint torque transmission internal spline 4, so that the connection of two internal locking type drill rods is realized. When disassembly is required, the locking nipple 7 is unscrewed from the male nipple 1 by the installation tool, and the female nipple 2 is then withdrawn from the male nipple 1.

Claims

1. An internal locking formula drilling rod which characterized in that: male joint and female joint including drilling rod body both ends, be equipped with on the male joint and pass and turn round external splines, be equipped with on the female joint and pass and turn round internal splines that external splines match with above-mentioned biography, be equipped with spacing circular bead on passing the male joint of turning round external splines root, be equipped with the installation pipe with one heart in the drilling rod body, the fixed locking joint that has the external screw thread that is equipped with of one end that the installation pipe is close to the female joint, set up the internal thread with locking joint's external screw thread assorted on the male joint inner wall, locking joint is close to and is equipped with on the outer wall of external screw thread and compresses tightly the circular bead, be equipped with the retaining ring between circular bead and biography turn round internal splines root.

2. An internally locked drill rod according to claim 1, wherein: the rotating pipe mechanism comprises two rotating grooves symmetrically formed in the wall of the mounting pipe.

3. An internally locked drill rod according to claim 1, wherein: the outer wall of the baffle ring is arranged to be abutted against the inner wall of the drill rod body, and the inner wall of the baffle ring is arranged to be abutted against the outer wall of the locking joint.

4. An internally locked drill rod according to claim 1, wherein: the length of the installation pipe is not less than 1/2 of the total length of the drill rod body.

5. An internally locked drill rod according to claim 1, wherein: and a rotary sealing ring is arranged between the installation pipe and the inner wall of the drill rod body.