CN200985747Y

CN200985747Y - Pyramid inserted type drill pipe joint

Info

Publication number: CN200985747Y
Application number: CN 200620172957
Authority: CN
Inventors: 李华斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-19
Filing date: 2006-12-19
Publication date: 2007-12-05
Anticipated expiration: 2016-12-19

Abstract

A drill pipe joint of a pyramid inlaying type relates to a device that connects a drill and a drill pipe in a well-digging machine. The pyramid structure is formed by an internal wall of a bearing socket (2) of a bearing plug-in (1) and an external wall of an insertion joint (3) of an insertion device (8). A clasp (7) at a tail of a pressure cap (5) combines with a convex cardy (6) of the external wall in the middle of the insertion device (8). The internal wall of the pressure cap (5) combines with a thread in the external wall of the bearing plug-in (1). By adopting the way of the pyramid inlaying type, the pressure cap is screwed tightly after plugging in and the phenomenon that inconvenient connection and disassembly brought by the twisting force of the drill when in use can be avoided. The disassembly uses only one minute and the utility model is simple in structure, fast in disassembly, tightening in connection, convenient in use and durable on service.

Description

The tool joint of pyramid plug-in type

One, technical field

The utility model relates to the device that connects drill bit and drilling rod in a kind of machinery of digging a well, the tool joint of especially a kind of pyramid plug-in type.

Two, background technology

In the known technology,, must aim at screw thread during installation, in the course of the work,, cause the dismounting difficulty, also the easy damaged joint because the powerful twisting force of drilling rod makes the joint screw thread revolve very tightly because general water conservancy Wheel drilling joint adopts reverse screw thread to screw connection; In addition, though large-scale adopt mechanical handling as the oil drilling rod bit, but still exist such as waste time and energy, heavy loaded down with trivial details deficiency.

Three, summary of the invention

Goal of the invention of the present utility model is, proposes the tool joint of a kind of pyramid plug-in type, and this device can conveniently mount and dismount.

The measure that realizes the present utility model purpose is, the bell and spigot inwall of socket component and the insert head outer wall of insert are the pyramidal structure that cooperatively interacts, the snap ring of pressure cap afterbody cooperates with the Ka Tai of insert middle part outer wall projection, and the pressure cap inwall cooperates with the socket component outer wall thread.

The utility model screws pressure cap owing to adopt the combination of pyramid inserting mode after the grafting, avoid the connection and the inconvenient phenomenon of dismounting that occur because of the drilling rod twisting force in the course of work.General of dismounting needs about 1 minute time, and structure is simple and direct, and dismounting is quick, connects fastening, easy to use, durable in use.

Four, description of drawings

Fig. 1 is the schematic diagram of the utility model embodiment 1

Five, the specific embodiment

Embodiment 1: bell and spigot 2 inwalls of socket component 1 and insert head 3 outer walls of insert 8 are the pyramidal structure that cooperatively interacts, and the snap ring 7 of pressure cap 5 afterbodys cooperates with the card platform 6 of insert 8 middle part outer wall projectioies, and pressure cap 5 inwalls cooperate with socket component 1 outer wall thread 4.

Pressure cap 5 outer walls have axial rib groove 10.

Insert 8 middle part card platforms 6 back outer walls have screw thread 9.

Bell and spigot 2 inwalls of socket component 1 and insert head 3 outer walls of insert 8 are that the pyramidal structure employing that cooperatively interacts is with slightly in many ways, insert head 3 outer walls that are insert 8 are 4 to 16 quadratic prism shapes, and diameter of section is gradually little to the end, bell and spigot 2 inwalls of corresponding socket component 1 are also corresponding to be interior 4 to 16 sides, and internal diameter is gradually little to the bottom from port part.Bell and spigot 2 inwalls of socket component 1 and insert head 3 outer walls of insert 8 are inclined to 1.5 ° to axle.

After the insert head 3 of insert 8 inserts the bell and spigot 2 of socket component 1, gapped between insert head 3 ends and bell and spigot 2 bottoms, gapped between the card platform 6 of bell and spigot 2 open ends and insert 8.These gaps are the 5-15 millimeter, after remaining on service wear, still can closely cooperate during the bell and spigot 2 of the insert head 3 insertion socket components 1 of insert 8.

Pressure cap 5 inwalls cooperate with socket component 1 outer wall thread 4.The precession direction of screw thread 4 is opposite with insert 8 work direction of rotation with socket component 1.

During installation, the insert head 3 of insert 8 is aimed at pyramid cooperate, behind the bell and spigot 2 of insertion socket component 1, pressure cap 5 was revolved from insert 8 middle part card platforms 6 back outer wall screw threads 9, push down card platform 6 precession inserts 8 outer wall threads 4 and get final product; In the course of the work, insert 8 cooperates the transmission rotary torsion by insert head 3 with bell and spigot 2 pyramids of socket component 1, though pressure cap 5 further screws with the friction of borehole wall work plane, but this effect is limited, during dismounting, block the axial rib groove 10 of pressure cap 5 outer walls with instruments such as knuckle busters, screw off pressure cap 5 after, pressure cap 5 keeps off before outer wall screw thread 9, the insert head 3 of insert 8 is extracted get final product from the bell and spigot 2 of socket component 1.

Present embodiment adopts the combination of pyramid inserting mode, screws pressure cap after the grafting, avoids the connection and the inconvenient phenomenon of dismounting that occur because of the drilling rod twisting force in the course of work.General of dismounting needs about 1 minute time, and structure is simple and direct, and dismounting is quick, connects fastening, easy to use, durable in use.

Claims

1, pyramid plug-in type tool joint, it is characterized in that, insert head (3) outer wall of bell and spigot (2) inwall of socket component (1) and insert (8) is the pyramidal structure that cooperatively interacts, the snap ring (7) of pressure cap (5) afterbody cooperates with the Ka Tai (6) of insert (8) middle part outer wall projection, and pressure cap (5) inwall cooperates with socket component (1) outer wall thread (4).

2, pyramid plug-in type as claimed in claim 1 tool joint is characterized in that, pressure cap (5) outer wall has axial rib groove (10).

3, pyramid plug-in type as claimed in claim 1 tool joint is characterized in that, insert (8) middle part Ka Tai (6) back outer wall has screw thread (9).

4, pyramid plug-in type as claimed in claim 1 tool joint, it is characterized in that, insert head (3) outer wall of bell and spigot (2) inwall of socket component (1) and insert (8) is that the pyramidal structure employing that cooperatively interacts is with slightly in many ways, insert head (3) outer wall that is insert (8) is 4 to 16 quadratic prism shapes, and diameter of section is gradually little to the end, bell and spigot (2) inwall of corresponding socket component (1) is also corresponding to be interior 4 to 16 sides, and internal diameter is gradually little to the bottom from port part, and insert head (3) outer wall of bell and spigot (2) inwall of socket component (1) and insert (8) is inclined to 1.5 ° to axle.

5, pyramid plug-in type as claimed in claim 1 tool joint, it is characterized in that, after the insert head (3) of insert (8) inserts the bell and spigot (2) of socket component (1), gapped between insert head (3) end and bell and spigot (2) bottom, gapped between the Ka Tai (6) of bell and spigot (2) open end and insert (8).

6, pyramid plug-in type as claimed in claim 5 tool joint is characterized in that, these gaps are the 5-15 millimeter.

7, pyramid plug-in type as claimed in claim 1 tool joint is characterized in that, the precession direction of screw thread (4) is opposite with insert (8) work direction of rotation with socket component (1).