CN210768622U

CN210768622U - Quick detachable drilling rod

Info

Publication number: CN210768622U
Application number: CN201921684650.7U
Authority: CN
Inventors: 周文杰; 李景涛
Original assignee: Luoyang Pneumatic Tool Co ltd
Current assignee: Luoyang Pneumatic Tool Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-16
Anticipated expiration: 2029-10-10

Abstract

An easily-detachable drill rod comprises a rod body, connectors and connecting tails, wherein the connectors and the connecting tails are connected to two ends of the rod body, the easily-detachable drill rod also comprises a connecting nut, one drill rod connector is connected with the other drill rod connecting tail, the connectors are provided with axial multi-pyramid tables, and the connecting tails are provided with multi-pyramid sockets corresponding to the shapes of the multi-pyramid tables; when the two drill rods are connected end to end, the polygonal pyramid table of one drill rod is inserted into the polygonal pyramid socket of the other drill rod and is in contact with the corresponding edge surfaces of the polygonal pyramid sockets in a fitting manner, so that the two drill rods are coaxially connected. The utility model discloses a coaxial fit of many pyramid platforms and many pyramid nest has realized quick installation, the dismantlement of drilling rod, compares the threaded connection of background art, the utility model has the advantages of bearing the big, long service life, easily dismantling of moment of torsion, and comprehensive cost low grade is showing.

Description

Quick detachable drilling rod

Technical Field

The utility model belongs to the technical field of the drilling rod technique and specifically relates to a quick detachable drilling rod is related to.

Background

The drilling machine needs to be continuously connected with a drill rod in the working process so as to realize drilling depth, and when the drill rod is connected, the connector of the newly connected drill rod is connected with the connection tail of the drill rod on the drilling machine. The head-tail connection of the existing drill rod is realized through threaded connection, the connector is a shaft with external threads, the connection tail is a hole with internal threads, and the connector and the connection tail are connected together in a threaded manner. In order to ensure that the drill rods do not fall off in the drilled hole, the screwing direction of the threads is consistent with the rotating direction of the drilling machine, and therefore the resistance torque applied to the drill rods in the working process and the torque of the drilling machine enable the threaded connection between the drill rods to be tighter and tighter. So firstly solved the drilling rod problem that drops, secondly the connection between each drilling rod does not rock the clearance, makes whole drilling rod connector have fine guidance quality, and difficult emergence is bored partially. But this also brings about some negative effects.

Although the torque provided by the drill is not very great, the impact experienced by the drill during drilling causes the threaded connection to tighten and tighten, and in practice, the drill does not need to provide too much tightening torque to the threaded connection when the drill rod is being added, but the torque provided by the drill itself is much less than the torque required to loosen the thread when the drill rod is being removed. The more drill rods are added and connected, the larger the torque required for unscrewing the threads is, the torque of 2000 Nm is usually required for unscrewing the threads, and the large torque can be realized only by erecting an oil cylinder with a large cylinder diameter on a construction site and pushing a long force arm. Therefore, disassembly of the drill pipe is time consuming, labor intensive, and inefficient.

In order to improve the connection strength of the threads, the threads of the drill rod are generally large-pitch trapezoidal threads, but under the action of the unidirectional continuous precession torque, a tightening torque of 2000 Nm is finally generated, so that the service life of the threads is greatly influenced, and most of the drill rods are scrapped due to the damaged threads.

SUMMERY OF THE UTILITY MODEL

In order to overcome not enough in the background art, the utility model discloses an easy detachable drilling rod, its aim at: the connecting structure of the drill rod is changed, so that the drill rod is convenient to install and detach, and the service life of the drill rod is prolonged.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

an easily-detachable drill rod comprises a rod body, connectors and connecting tails, wherein the connectors and the connecting tails are connected to two ends of the rod body, the easily-detachable drill rod also comprises a connecting nut, one drill rod connector is connected with the other drill rod connecting tail, the connectors are provided with axial multi-pyramid tables, and the connecting tails are provided with multi-pyramid sockets corresponding to the shapes of the multi-pyramid tables; when the two drill rods are connected end to end, the polygonal pyramid table of one drill rod is inserted into the polygonal pyramid socket of the other drill rod and is in contact with the corresponding edge surfaces of the polygonal pyramid sockets in a fitting manner, so that the two drill rods are coaxially connected.

For further improvement technical scheme, many pyramid platforms are positive four pyramid platforms, and the central line of positive four pyramid platform is coaxial with the body of rod, the positive four pyramid nest of many pyramid nests, the central line of positive four pyramid nest is coaxial with the body of rod.

In order to further improve the technical scheme, the cone angle of the regular quadrangular frustum pyramid is 10 degrees.

For further improvement of the technical scheme, any one of the connector and the connector tail is provided with an external thread, and the other connector is provided with a connecting nut corresponding to the external thread.

In order to further improve the technical scheme, the external thread is arranged on the outer cylindrical surface of the connector, and a compression joint shaft shoulder with the diameter larger than that of the rest part is arranged on the outer cylindrical surface of the connection tail and the part close to the outer end surface; the connecting nut is provided with a crimping sleeve with the inner diameter smaller than the inner thread of the connecting nut, the connecting nut is coaxially installed on the outer cylindrical surface of the connecting tail, and when the connecting nut on one drill rod is in threaded connection with the outer thread on the other drill rod connector, the crimping sleeve presses the crimping shaft shoulder to enable the connector to be crimped with the connecting tail.

For further improvement technical scheme, establish the annular on the outer face of cylinder of connecting the tail, the one end that is close to the body of rod, install the jump ring in the annular, coupling nut is located between crimping shaft shoulder and the jump ring.

In order to further improve the technical scheme, the screwing direction of the connecting nut and the connecting head is opposite to the rotating direction of the drill rod.

For further improvement of the technical scheme, four positioning grooves for directional connection of the multi-pyramid frustum and the multi-pyramid socket are arranged at two ends of the rod body.

In order to further improve the technical scheme, a synchronous belt wheel is arranged on the outer circular surface of the connecting nut.

Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has:

the utility model discloses a coaxial cooperation of many pyramid platforms and many pyramid nest has realized quick installation, the dismantlement of drilling rod. Compare the threaded connection of background art, the utility model has the advantages of it is big, long service life, easily dismantle to bear the weight of the moment of torsion, and comprehensive cost low grade is showing.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic partial cross-sectional view of two drill rods in a connected state.

In the figure: 1. a rod body; 1.1, positioning a groove; 2. a connector; 2.1, a polygonal pyramid platform; 3. a connection tail; 3.1, a multi-pyramid nest; 3.2, pressing a shaft shoulder; 4. a connecting nut; 4.1, pressing and connecting a sleeve; 5. and a clamp spring.

Detailed Description

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The utility model provides an easy detachable drilling rod, as shown in fig. 1-2, includes the body of rod 1 and connects connector 2, the connection tail 3 at body of rod 1 both ends, still includes the coupling nut 4 that is used for a drilling rod connector 2 to link to each other with another drilling rod connection tail 3, connector 2 is equipped with axial many pyramid platform 2.1, connection tail 3 is equipped with many pyramid nest 3.1 corresponding with many pyramid platform 2.1 shape.

Specifically, many pyramid platform 2.1 is positive four pyramid platform, and the central line of positive four pyramid platform is coaxial with the body of rod 1, the positive four pyramid nest of many pyramid nest 3.1, the central line of positive four pyramid nest is coaxial with the body of rod 1. When the two drill rods are connected end to end, the regular quadrangular frustum of one drill rod is inserted into the regular quadrangular pyramid socket of the other drill rod and is in contact with the edge surfaces corresponding to the regular quadrangular pyramid sockets in a fitting manner, so that the two drill rods are coaxially connected.

In order to connect the two drill rods end to end, any one of the connector 2 and the connector tail 3 is provided with an external thread, and the other one is provided with a connecting nut 4 corresponding to the external thread. The function of the connecting nut 4 is to connect the connecting head 2 and the connecting tail 3 together. Obviously, the coupling nut 4 can be mounted on the coupling head 2 as well as on the coupling tail 3.

In the embodiment, the external thread is arranged on the outer cylindrical surface of the connector 2, and a crimping shaft shoulder 3.2 with the diameter larger than that of the rest part is arranged on the outer cylindrical surface of the connection tail 3 and the part close to the outer end surface; the connecting nut 4 is provided with a crimping sleeve 4.1 with the inner diameter smaller than the inner thread of the connecting nut, and the connecting nut 4 is coaxially arranged on the outer cylindrical surface of the connecting tail 3.

When the connecting nut 4 on one drill rod is in threaded connection with the external thread on the other drill rod connector 2, the crimping sleeve 4.1 presses the crimping shaft shoulder 3.2, so that the connector 2 and the connecting tail 3 are crimped together. The connector 2 and the connecting tail 3 are pressed together, so that the regular quadrangular frustum pyramid and the regular quadrangular pyramid socket form reliable fit.

Because the structural strength is high, the contact surface is large, the regular quadrangular frustum pyramid can bear the torque far greater than the threaded connection by being matched with the regular quadrangular pyramid socket, and the use of the regular quadrangular frustum pyramid socket is not hindered even if the regular quadrangular pyramid. The regular quadrangular pyramid frustum and the regular quadrangular pyramid socket have conicity, and the conicity has the functions of facilitating disassembly and assembly and transmitting torque and axial force. The drilling machine applies axial thrust and rotation torque to the drill rod during drilling, the axial thrust is far greater than the reverse axial force generated by the conical surface during rotation, therefore, under the connecting action of the axial thrust and the connecting nut 4, the regular quadrangular frustum and the regular quadrangular pyramid socket are always matched and connected together, no gap swing exists, and the connection is rigid. The rigid connection enables a plurality of drill rods to form an integral long rod, so that the drill rod has good guidance performance and is not easy to cause drilling deviation. And do not take tapered connector 2 and connect the tail 3 to link together, even if the cylinder head of connector 2 has many precisions with the cooperation of dismantling of connecting 3 cylinder holes of tail, the inevitable production of all shakes the clearance, and many drilling rods are connected the back, and a plurality of shaking clearance superposes, enlargies and causes the amplitude of oscillation of whole drilling rod very big, and the direction error to the drill bit is also bigger.

The influence of factors such as the disassembly and assembly convenience of the drill rod, the transmitted torque, the axial thrust and the like on the service life and the manufacturing cost of the drill rod is comprehensively considered, and the taper angle of the regular quadrangular frustum is optimal when the taper angle is 10 degrees.

The utility model discloses the positive quadrangular frustum pyramid of drilling rod all has comparatively complicated shape with positive quadrangular pyramid nest, nevertheless does not mean to have higher processing cost.

The utility model discloses a drilling rod divide into the triplex and makes, and the positive rectangular pyramid platform of connector 2, the positive rectangular pyramid nest of connecting tail 3 adopt the die forging shaping, then is a whole through the friction weld welding with the body of rod 1 after the machining, and friction weld welding area is big, welding strength is high, can satisfy the moment of torsion requirement of drilling rod completely. The conventional die forging technology can achieve the degree of no machining, and the regular rectangular pyramid frustum and the regular rectangular pyramid socket can meet the matching requirement without machining. The difficult processing problem of positive quadrangular frustum pyramid platform and positive quadrangular pyramid nest has been solved to the die forging technology, compares current thread machining mode, the utility model discloses a drilling rod has the advantage that joint strength is high, long service life, comprehensive cost are low.

In order to prevent that coupling nut 4 from sliding into the body of rod 1, establish the annular on the outer face of cylinder of connecting tail 3, the one end that is close to the body of rod 1, install jump ring 5 in the annular, coupling nut 4 is located between crimping shaft shoulder 3.2 and jump ring 5.

In order to prevent the drill rod from loosening and falling off in the drilling process, the screwing direction of the connecting nut 4 and the connecting head 2 is opposite to the rotating direction of the drill rod. Thus, the friction torque applied to the coupling nut 4 by the wall of the borehole during drilling will keep the coupling nut 4 tightened. Although the drilled hole wall also generates a tightening torque for the coupling nut 4, this tightening torque is occasional, non-continuous and not substantial, since the diameter of the drilled hole is greater than the diameter of the coupling nut 4, and the coupling nut 4 only occasionally has some contact with the drilled hole wall.

In order to facilitate the identification of the position of the regular quadrangular frustum pyramid and the regular quadrangular pyramid socket in a matched installation manner, four positioning grooves 1.1 for directionally connecting the regular quadrangular frustum pyramid 2.1 with the regular quadrangular pyramid socket 3.1 are arranged at the two ends of the rod body 1. Therefore, the corresponding state of the quadrangular frustum pyramid and the regular quadrangular pyramid socket is not required to be observed, the manual installation can be realized, and the automation of the installation and the removal of the drill rod is convenient to realize.

In this embodiment, the coupling nut 4 is not designed into a common external hexagon, but a plurality of axial synchronous pulley grooves are uniformly distributed on the external cylindrical surface thereof. Such a design is intended to reduce the diameter of the drill rod and to facilitate the fitting of a dedicated rotary dismounting device for quick screwing or unscrewing of the coupling nut 4.

The utility model discloses a coaxial cooperation of many pyramid platforms 2.1 and many pyramid nest 3.1 has realized quick installation, the dismantlement of drilling rod. Compare threaded connection, the utility model has the advantages of it is big, joint strength is high, long service life, easily dismantlement to bear the moment of torsion, and comprehensive cost low grade is showing.

The part of the utility model not detailed is prior art. Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a quick detachable drilling rod, includes the body of rod (1) and connects connector (2), connection tail (3) at body of rod (1) both ends, characterized by: the drill pipe connector is characterized by further comprising a connecting nut (4) for connecting one drill pipe connector (2) with another drill pipe connecting tail (3), wherein the connector (2) is provided with an axial multi-pyramid platform (2.1), and the connecting tail (3) is provided with a multi-pyramid socket (3.1) corresponding to the multi-pyramid platform (2.1) in shape; when the two drill rods are connected end to end, the multi-pyramid platform (2.1) of one drill rod is inserted into the multi-pyramid socket (3.1) of the other drill rod and is in contact with the corresponding edge surfaces of the multi-pyramid socket (3.1) in a fitting manner, so that the two drill rods are coaxially connected.

2. The quick release drill rod as set forth in claim 1, wherein: the multi-pyramid platform (2.1) is a regular four-pyramid platform, the central line of the regular four-pyramid platform is coaxial with the rod body (1), the regular four-pyramid socket of the multi-pyramid socket (3.1) is coaxial with the rod body (1).

3. The quick release drill rod as set forth in claim 2, wherein: the cone angle of the regular quadrangular frustum pyramid is 10 degrees.

4. The quick release drill rod as set forth in claim 1, wherein: any one of the connector (2) and the connection tail (3) is provided with an external thread, and the other one is provided with a connection nut (4) corresponding to the external thread.

5. The quick release drill rod as claimed in claim 4, wherein: the external thread is arranged on the outer cylindrical surface of the connector (2), and a crimping shaft shoulder (3.2) with the diameter larger than that of the rest part is arranged on the outer cylindrical surface of the connection tail (3) and the part close to the outer end surface; connecting nut (4) are equipped with crimping cover (4.1) that the internal diameter is less than its internal thread, and connecting nut (4) are installed on the outer face of cylinder of connecting tail (3) coaxially, and when connecting nut (4) on a drilling rod and the external screw thread spiro union on another drilling rod connector (2), crimping cover (4.1) press to crimping shaft shoulder (3.2), make connector (2) with connect tail (3) crimping together.

6. The quick release drill rod as claimed in claim 5, wherein: establish the annular on the outer face of cylinder of connecting tail (3), the one end that is close to body of rod (1), install jump ring (5) in the annular, coupling nut (4) are located between crimping shaft shoulder (3.2) and jump ring (5).

7. The quick release drill rod as claimed in claim 5, wherein: the screwing direction of the connecting nut (4) and the connecting head (2) is opposite to the rotating direction of the drill rod.

8. The quick release drill rod as set forth in claim 1, wherein: the two ends of the rod body (1) are provided with four positioning grooves (1.1) which are used for the directional connection of the multi-pyramid frustum (2.1) and the multi-pyramid nest (3.1).

9. The quick release drill rod as set forth in claim 1, wherein: and a synchronous belt wheel is arranged on the outer circular surface of the connecting nut (4).