CN106907118A - Clutch type drill rod connecting device - Google Patents

Abstract

The invention discloses a clutch type drill pipe connection device, which comprises a drill pipe connector and a hydraulic chuck; the drill pipe connector is coaxially fixed to the main shaft of the drilling power box, and the hydraulic chuck is used for When disassembling, clamp the drill pipe and drive the drill pipe to rotate synchronously with the main shaft. The device combines the drill pipe connector with the hydraulic chuck. The chuck is connected with the main shaft in a detachable way. The connector is completed, so there is no need to disassemble and join the water braid; and the disassembly of the drill pipe is completed by the chuck, which simplifies the joining of the drill pipe and improves the efficiency of the drill pipe joining. In order to realize the intelligentization of the drill pipe Joining provides technical support.

Description

Clutch type drill pipe connection device

technical field

The invention relates to the field of drill pipe chucks, in particular to a clutch type drill pipe connecting device.

Background technique

The chuck is an important part of the drilling rig. Its function is to clamp the drill pipe, transmit torque and thrust, and drive the drilling tool to realize rotation and drilling. Therefore, the quality of the chuck structure is directly related to the reliability, range, and reliability of the drilling rig. Drill length, addition of water braids and execution of rig automation.

The existing chucks are directly connected to the main shaft by the rigidity of the connector, so that the torque is directly transmitted to the chuck, and the drill pipe is clamped by slips, without sealing function, and the cooling water can only pass through the extended drill pipe and the water braid , so as to enter the working drill pipe to realize the supply of cooling water. When the drill pipe is added, the following steps must be taken in sequence: remove the water braid - add the drill pipe - connect the water braid. Therefore, when the existing drill pipe chuck is added to the drill pipe, the disassembly and addition of the water braid must be completed, and the operation is very cumbersome. In the intelligent drilling machine, the intelligent addition and disassembly of the drill pipe cannot be realized.

In order to solve the above problems, a clutch type drill pipe connection device is needed. The device combines the drill pipe connector with the hydraulic chuck. The chuck is connected to the main shaft in a clutchable manner, and the connection of the drill pipe is completed by the drill pipe connector. , so that there is no need to disassemble and join the water braid; and the disassembly of the drill pipe is completed by the chuck, which simplifies the joining of the drill pipe, improves the efficiency of the joining of the drill pipe, and provides for the realization of the intelligent joining of the drill pipe. technical support.

Contents of the invention

In view of this, the object of the present invention is to overcome the defects in the prior art and provide a clutch type drill pipe connection device, which uses a drill pipe connector in combination with a hydraulic chuck, and the chuck is connected to the main shaft in a clutchable manner , the addition of the drill pipe is completed by the drill pipe connector, so that there is no need for disassembly and addition of the water braid; and the disassembly of the drill pipe is completed by the chuck, which simplifies the addition of the drill pipe and improves the addition of the drill pipe. Efficiency provides a technical guarantee for the realization of intelligent joining of drill pipes.

The clutch type drill pipe connecting device of the present invention includes a drill pipe connector and a hydraulic chuck; the drill pipe connector is coaxially fixed to the main shaft of the drilling power box, and the hydraulic chuck is used for clamping when the drill pipe is disassembled. Tighten the drill pipe and drive the drill pipe to rotate synchronously with the main shaft;

Further, the hydraulic chuck accepts the power of the main shaft in a clutchable manner;

Further, the hydraulic chuck includes a chuck seat as a piston cylinder, a piston slidingly fitted in the chuck seat, a clutch disc for clutchable transmission with the main shaft, and a clutch disc fixedly connected to the clutch disc. The slip sleeve is arranged in the slip sleeve to clamp the slip of the drill pipe; the slip sleeve is arranged in the piston in an axially fixed and circumferentially rotatable manner, and the slip sleeve The outer circle of the slip seat and the inner circle of the slip seat are conical surfaces that cooperate with each other;

Further, the slips and slip sleeves are relatively fixed in the circumferential direction through key connection, the clutch disc is provided with T-shaped grooves in the radial direction, and the T-shaped end of the slips is slidably fitted on the slips. The T-slot;

Further, there are a plurality of slips and they are uniformly distributed in the slip sleeve along the circumferential direction, slip return springs are provided between adjacent slips, and the end surface of the clutch disc facing the slips is provided with a spring for guiding the slips. The slips move radially to clamp or loosen the guide groove of the drill pipe;

Further, the end surface of the slip sleeve is fixed with a spring support seat, and an axial return spring is popped up between the spring support seat and the slip, and the elastic force of the axial return spring is used to push the slip relative to the slip sleeve. Slide it axially to release the drill pipe;

Further, the chuck seat and the piston jointly form a double-acting hydraulic cylinder structure;

Further, the power transmission is carried out between the main shaft and the clutch disc through the face teeth;

Further, the slip sleeve is provided with a two-way thrust ball bearing; the shaft ring of the two-way thrust ball bearing extends radially inward and is clamped on the outer wall of the slip sleeve;

Further, the drill pipe connector is provided with a cooling water channel, and the drill pipe connector is connected with the drill pipe using sealed pipe threads.

The beneficial effects of the present invention are: the clutch type drill pipe connection device of the present invention uses the drill pipe connector in combination with the hydraulic chuck, and when the drill pipe is connected, the main shaft is directly used to drive the drill pipe Each section of drill pipe does not need to be disassembled and joined by water braids; the process of joining drill pipes is simplified, the efficiency of joining drill pipes is improved, and technical support is provided for the realization of intelligent joining of drill pipes; When disassembling the drill pipe, use the chuck to clamp the drill pipe to be disassembled, and then use the clamper to clamp the drill pipe adjacent to the drill pipe, the hydraulic chuck is connected with the main shaft, the main shaft reverses, and the main shaft drives the hydraulic chuck The disc and the drill rod clamped by the chuck are reversed synchronously, and finally the drill rod is removed from the adjacent drill rod.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment:

Fig. 1 is the working schematic diagram of the present invention;

Fig. 2 is a structural schematic diagram of the present invention.

detailed description

Fig. 1 is a working schematic diagram of the present invention; Fig. 2 is a structural schematic diagram of the present invention; 1 is coaxially fixed to the main shaft 2 of the drilling power box, and the hydraulic chuck is used to clamp the drill pipe and drive the drill pipe to rotate synchronously with the main shaft 2 when the drill pipe is disassembled; the clutch type drill pipe connection of the present invention device, the drill pipe connector 1 is used in combination with the hydraulic chuck, and the drill pipe connector is used in combination with the hydraulic chuck. When the drill pipe is connected, the main shaft is directly used to drive the drill pipe section drill pipe, so that there is no need to disassemble and join the water braid; it simplifies the joining process of the drill pipe, improves the efficiency of the drill pipe joining, and provides technical support for the realization of the intelligent joining of the drill pipe; When disassembling the rod, use the chuck to clamp the drill pipe to be disassembled, and then use the clamper to clamp the drill pipe adjacent to the drill pipe, the hydraulic chuck is engaged with the main shaft, the main shaft reverses, and the main shaft drives the hydraulic chuck and The drill rod clamped by the chuck is reversed synchronously, and finally the drill rod is removed from the adjacent drill rod.

In this embodiment, the hydraulic chuck receives the power of the main shaft 2 in a clutchable manner, and uses a hydraulic device to drive the hydraulic chuck to press against the main shaft 2 or separate from the main shaft 2 to realize the power between the main shaft 2 and the clutch chuck. During the drilling process, the chuck is separated from the main shaft 2 of the power head; when the drill pipe is disassembled, the chuck engages with the main shaft 2, and the drill pipe is clamped at the same time, and the main shaft 2 transmits the torque to the hydraulic chuck. Slips 4 realize the disassembly of the drill pipe.

In this embodiment, the hydraulic chuck includes a chuck seat 7 as a piston 6 cylinder, a piston 6 slidingly fitted in the chuck seat 7, and a clutch disc 3 for clutch transmission with the main shaft 2 1. The slip sleeve 5 fixedly connected to the clutch disc 3 is arranged in the slip sleeve 5 for clamping the slip 4 of the drill pipe; the slip sleeve 5 can be axially fixed and circumferentially The way of rotation is set in the piston 6, the outer circle of the slip 4 and the inner circle of the slip seat 4 are conical surfaces that cooperate with each other, wherein the slip sleeve 5 is fixed with a fixed seat 12 through threads, and the fixed seat 12 is fixed by using a fixed The seat 12 drives the clutch disc 3 to slide away from the main shaft 2. When the oil is supplied to the end of the chuck seat 7A, the chuck is opened and separated from the main shaft 2. The working process is as follows: oil is supplied to the end A, the clutch disc 3, the piston 6, and the slips The sleeve 5, the thrust bearing 11 and the fixed seat 12 move from left to right (as shown in Figure 1), the clutch disc 3 disengages from the main shaft 2, and the slip 4 continues to maintain the leftmost end of the slip 4 under the action of the axial return spring 8 , the slips 4 are opened under the action of the circumferential return spring located on its side. During the working process, the slips 4 move along the T-shaped groove on the end face of the clutch disc 3 to realize the opening, closing and load transmission of the slips 4. When oil is supplied to end B, the clutch disc 3, piston 6, slip sleeve 5, thrust bearing 11 and fixed seat 12 move from right to left, and the clutch disc 3 first engages with the main shaft 2. After the engagement is completed, the piston 6 continues to Moving to the left, except that the slips 4, the meshing disk and the circumferential return spring of the slips 4 do not move, the others continue to move to the left, the slip sleeve 5 compresses the slips 4, and shrinks radially, thereby realizing the clamping of the drill pipe.

In this embodiment, the power is transmitted between the slips 4 and the slips 4 through keys, the inner conical surface of the slips 4 and the outer conical surface of the slips 4 are provided with key grooves, the slips 4 and the slip sleeve 5 Circumferential transmission is realized through keys, and the length of the keyway of the 4 slips should ensure that the slips 4 can reciprocate axially along the 4 slips.

In this embodiment, the slips 4 and the slip sleeve 5 are relatively fixed in the circumferential direction through a key connection, and the length of the keyway on the slip seat sleeve should ensure that the slip 4 can move along the axial direction of the slip sleeve. reciprocating movement. The clutch disc 3 is provided with a T-shaped slot 14 in the radial direction, and the T-shaped end of the slip 4 is slidably fitted in the T-shaped slot 14 , and the slip 3 can move radially under the guidance of the T-shaped slot 14 . Move to realize clamping or loosening of slips 4.

In this embodiment, there are a plurality of slips 4 and they are evenly distributed in the slip sleeve 5 along the circumferential direction, slip return springs 10 are provided between adjacent slips 4, and the clutch disc 3 faces toward the slips. The end surface of the shoe 4 is provided with a guide groove for guiding the slip 4 to move radially to realize clamping or loosening the drill pipe; therefore, when the slip 4 moves to the right relative to the slip 4 seat, the The slips 4 are spread radially under the action of the slip return spring 10 to loosen them from the drill pipe.

In this embodiment, the end surface of the slip sleeve 5 is fixed with a spring support seat 9, and an axial return spring 8 is popped up between the spring support seat 9 and the slip 4, and the elastic force of the axial return spring 8 is used to To push the slip 4 to slide axially relative to the slip sleeve 5 to loosen the drill pipe, when the hydraulic oil enters from the end of the chuck seat 7A, the piston 6 drives the slip sleeve 5 to move to the right, and the slip 4 moves on the shaft. Under the action of the return spring 8 , it will slide to the left relative to the slip sleeve 5 to realize the relaxation of the slips 4 .

In this embodiment, the chuck seat 7 and the piston 6 jointly form a double-acting hydraulic cylinder structure, and the chuck seat 7 as a cylinder has two oil inlet ports, and the two oil inlet ports are respectively connected to the left and right sides of the piston 6 , alternately supplying hydraulic oil to the two oil inlet ports can drive the piston 6 to move back and forth.

In this embodiment, the power transmission is performed between the main shaft 2 and the clutch disc 3 through the end face teeth, and the end face teeth are formed on the end face of the main shaft 2 and the end face of the clutch disc 3, and the two mesh to realize power transmission.

In this embodiment, the slip sleeve 5 is provided with a two-way thrust ball bearing 11; the shaft ring of the two-way thrust ball bearing 11 extends radially inwards and is externally clamped on the outer wall of the slip sleeve 5, bidirectional The thrust ball bearing 11 can apply bidirectional axial thrust to the slip sleeve 5. In addition, the shaft ring of the bidirectional thrust ball bearing 11 extends radially inward to form a convex ring, and the convex ring is stuck between the slip sleeve 5 and the fixed seat 12. in the groove formed between them.

In this embodiment, the drill pipe connector 1 is provided with a cooling water channel, and the drill pipe connector 1 is connected to the drill pipe with a sealed pipe thread, and the drill pipe and the connector 1 are connected with a matching sealed pipe thread. , which not only realizes the transmission of load, but also realizes the sealing of cooling water, and the cooling water enters the drill pipe through the main shaft 2 and the drill pipe connector 1 .

Finally, it is noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be carried out Modifications or equivalent replacements without departing from the spirit and scope of the technical solution of the present invention shall be covered by the claims of the present invention.

Claims (10)

1. a kind of disengaging type drill rod connecting device, it is characterised in that：Including drill rod connector and oild chuck；The drilling rod connection Device is coaxially fixed on the main shaft of drilling headstock, and the oild chuck is used to clamp drilling rod when drilling rod is dismantled and drive the drilling rod With the main shaft synchronous axial system.

2. disengaging type drill rod connecting device according to claim 1, it is characterised in that：The oild chuck is with can clutch Mode receives the power of the main shaft.

3. disengaging type drill rod connecting device according to claim 2, it is characterised in that：The oild chuck is included as living The chuck seat of plug cylinder, the piston being snug fit in the chuck seat, for the main shaft can disengaging type be driven clutch discs, The slip sleeve of the clutch discs is fixedly connected on, the slips for clamping the drilling rod is arranged in the slip sleeve；The card Watt set is arranged in the piston in the circumferential rotatable mode of axial restraint, and the inner circle of the cylindrical and slip spider of the slips is The circular conical surface of mutual cooperation.

4. disengaging type drill rod connecting device according to claim 3, it is characterised in that：Lead between the slips and slip sleeve Cross and be bonded the mode for connecing and realize circumferentially being relatively fixed, the clutch discs are radially provided with T-slot, the T-shaped end of the slips It is snug fit at the T-slot.

5. disengaging type drill rod connecting device according to claim 3, it is characterised in that：The slips is multiple and circumferentially It is uniformly distributed in the slip sleeve, slips back-moving spring, end face of the clutch discs towards slips is provided between adjacent slips It is provided with for guiding the slips to move radially the gathering sill for realizing clamping or unclamp drilling rod.

6. disengaging type drill rod connecting device according to claim 5, it is characterised in that：The slip sleeve end face is fixed with bullet Spring support base, and there are axial back-moving spring, the elastic force use of the axial back-moving spring in bullet top between spring support seat and slips It is set to unclamp drilling rod in promoting slips to be slid axially relative to slip sleeve.

7. disengaging type drill rod connecting device according to claim 3, it is characterised in that：The chuck seat and the common shape of piston Into double acting hydraulic cylinder structure.

8. disengaging type drill rod connecting device according to claim 3, it is characterised in that：Lead between the main shaft and clutch discs Cross end-tooth and enter action edge transmission.

9. disengaging type drill rod connecting device according to claim 3, it is characterised in that：Bidirectional pulling is provided with the slip sleeve Power ball bearing；The blowout patche of the double-direction thrust ball bearing is radially inwardly extending and is stuck in the outer wall of the slip sleeve outward.

10. disengaging type drill rod connecting device according to claim 3, it is characterised in that：It is provided with the drill rod connector Cooling water channel, and drill rod connector uses sealing pipe screw thread to be attached with drilling rod.