CN107269237B

CN107269237B - Rotary buckle pliers device with rotary buckle roller synchronously moving

Info

Publication number: CN107269237B
Application number: CN201710584976.1A
Authority: CN
Inventors: 王昌荣; 周克振
Original assignee: Sichuan Kunlun Petroleum Equipment Manufacturing Co ltd
Current assignee: Sichuan Kunlun Petroleum Equipment Manufacturing Co ltd
Priority date: 2017-07-18
Filing date: 2017-07-18
Publication date: 2023-06-27
Anticipated expiration: 2037-07-18
Also published as: CN107269237A

Abstract

The invention relates to a turnbuckle pliers device for synchronously moving a turnbuckle roller, which comprises a stand column and a turnbuckle pliers arranged on the stand column, wherein the turnbuckle pliers comprises a frame, a clamping oil cylinder, a clamping arm provided with a turnbuckle component and a rear rotary wheel support provided with the turnbuckle component, the frame is hinged to the middle part of the clamping arm, the end part of the clamping arm is hinged to one end of a connecting arm, and the other end of the connecting arm is hinged to the rear rotary wheel support; one end of the clamping oil cylinder is connected with the hinging point of the clamping arm and the connecting arm, and the other end of the clamping oil cylinder is hinged with the frame; the connecting line between the middle part and the end part of the clamping arm is not collinear with the movement direction of the clamping cylinder; a guiding device is arranged between the back-rotation wheel support and the frame. The turnbuckle components can be synchronously clasped towards the center of the pipe tool, centering of the pipe tool is facilitated, and the turnbuckle components are not easy to deviate due to the connection and matching of the connecting arm, the clamping arm and the rear rotary wheel support in the turnbuckle process.

Description

Rotary buckle pliers device with rotary buckle roller synchronously moving

Technical Field

The invention relates to the technical field of petroleum drilling mechanical equipment, in particular to a turnbuckle pliers device for synchronously moving turnbuckle rollers.

Background

In automatic drilling production, the turnbuckle pliers are the most advanced torque turnbuckle equipment at present, can finish the turnbuckle connection and disassembly work of drilling tools such as drilling rods, sleeves and the like, and are one of the most important automatic equipment in modern drilling because a large number of drilling tools need to be fastened and unfastened in the drilling or tripping process of an oil rig, and the turnbuckle pliers can play a role in reducing the labor intensity of wellhead drilling workers, improving the production efficiency and the safety of personnel.

The prior art of the turnbuckle pliers mostly adopts the structure form of four turnbuckle rollers, and on one hand, under the condition of the turnbuckle rollers with the same diameter, the turnbuckle pliers have smaller diameter range for clamping the pipe tool, are only suitable for turnbuckle connection of the large-diameter pipe tool, and are not suitable for turnbuckle connection of the small-diameter pipe tool; on the other hand, the turnbuckle pliers with the four turnbuckle rollers cannot translate synchronously in the process of holding the pipe fitting, which is unfavorable for centering the pipe fitting, and the phenomenon of deviation in the horizontal direction is easy to occur in the process of turnbuckle.

Disclosure of Invention

The invention aims to solve the technical problem of providing a screwing clamp device with synchronous movement of screwing rollers, so as to solve the problems that the screwing rollers of the screwing clamp in the prior art cannot translate synchronously and are easy to deviate.

The technical scheme for solving the technical problems is as follows:

the utility model provides a spiral-lock pincers device that spiral-lock gyro wheel moved in step, include stand and install the spiral-lock pincers on the stand, the spiral-lock pincers include frame, clamping cylinder, install the centre gripping arm of spiral-lock subassembly and install the back-spinning wheel support of spiral-lock subassembly, the frame articulates in the middle part of centre gripping arm, and the tip of centre gripping arm articulates in the one end of linking arm, and the other end of linking arm articulates with back-spinning wheel support; one end of the clamping oil cylinder is connected with the hinging point of the clamping arm and the connecting arm, and the other end of the clamping oil cylinder is hinged with the frame; the connecting line between the middle part and the end part of the clamping arm is not collinear with the movement direction of the clamping cylinder; a guiding device is arranged between the back-rotation wheel support and the frame.

The working principle of the invention is as follows: when the pipe fitting needs to be buckled, the piston of the clamping oil cylinder stretches out and pushes the clamping arm to rotate around the hinging point at the middle part of the clamping arm, so that the rotary buckle assembly translates towards the center of the pipe fitting, and meanwhile, the clamping arm drives the rotary buckle assembly on the rear rotary wheel support to translate towards the center of the pipe fitting through the connecting arm, so that all the rotary buckle assemblies translate to the surface of the pipe fitting at the same time, clamp the pipe fitting tightly and generate certain clamping pressure, and the pipe fitting can be buckled after a hydraulic source is connected; the pipe break-out operation is opposite to the process and will not be described in detail here.

On the basis of the technical scheme, the invention can be improved as follows.

Further, the clamping arm is hinged with the connecting arm through a pin shaft b, and one end of the clamping oil cylinder is fixedly connected with the pin shaft b.

Further, the guiding device comprises a guiding block and a protruding track arranged on the rear rotary wheel support, the guiding block is provided with a guiding groove for sliding of the protruding track, and the guiding block is arranged on the frame.

Further, the turnbuckle assembly comprises a turnbuckle roller and a power motor for driving the turnbuckle roller to rotate.

Further, a lifting pulley driven by an oil cylinder is arranged on the upright post, the lifting pulley is connected with a hanging bracket, and the hanging bracket is connected with the turnbuckle pliers.

Further, the hanger is slidably connected with the upright.

Further, the hanging bracket is connected with four connecting rods, four lugs matched with the connecting rods are arranged at the top of the frame, and the turnbuckle pliers are arranged on the hanging bracket through the connecting rods.

Further, a buffer device is arranged between the lifting pulley and the hanging bracket.

Further, the buffer device is a buffer spring or a buffer hydraulic cylinder.

Compared with the prior art, the invention has the following beneficial effects:

(1) According to the invention, each turnbuckle assembly can be synchronously clasped towards the center of the pipe tool, so that the centering of the pipe tool is facilitated, and each turnbuckle assembly is not easy to deviate due to the connection and matching of the connecting arm, the clamping arm and the rear rotary wheel support in the turnbuckle process;

(2) The three groups of turnbuckle components are adopted to clamp the pipe tool for carrying out the buckling and/or the unbuckling operation, and compared with a four-turnbuckle roller turnbuckle pliers with the same diameter, the diameter range of the pipe tool is larger;

(3) According to the invention, the three groups of turnbuckle assemblies are driven to tightly hold the pipe tool through the cooperation of the clamping oil cylinder, the connecting arm, the clamping arm and the rear rotary wheel support, so that the distance between the whole transmission mechanism and the clamping oil cylinder is shortened, the whole volume of the turnbuckle pliers is reduced, the structure is compact, and the installation at a wellhead is facilitated;

(4) According to the invention, the lifting pulley drives the hanging frame to move up and down, so that the turnbuckle pliers can move up and down along the central shaft direction of the pipe tool, and the turnbuckle pliers are suitable for turnbuckle connection of pipe tools with different joint length specifications;

(5) The buffer device between the turnbuckle pliers and the lifting pulley can compensate axial displacement generated in the screwing or unscrewing process of the pipe tool threads in the turnbuckle process;

(6) The turnbuckle pliers and the hanging frame are connected through the four connecting rods to form a parallelogram mechanism, so that the turnbuckle pliers can swing forwards and backwards by a certain amplitude in the horizontal direction, the horizontal posture is kept unchanged, and the turnbuckle pliers can adapt to a certain amount of misalignment with the center of the pipe.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of a turnbuckle pliers;

FIG. 3 is a cross-sectional view of the swing clamp at the connecting arm;

FIG. 4 is a cross-sectional view of the swing clamp at the clamping cylinder;

FIG. 5 is a schematic view of the structure of the rear wheel support;

FIG. 6 is a schematic view of the structure of the guide block;

FIG. 7 is a schematic view of the connection structure of the upright, lifting block and hanger;

FIG. 8 is a schematic view of the structure of the lifting block;

fig. 9 is a schematic structural view of the hanger.

In the drawings, the components represented by the respective reference numerals are as follows:

1. upright post, 2, lifting pulley, 3, oil cylinder, 4, turnbuckle clamp, 401, frame, 402, turnbuckle component, 403, guide block, 413, guide groove, 404, connecting arm, 405, clamping oil cylinder, 406, clamping arm, 416, a shaft hole, 426, b shaft hole, 436, c shaft hole, 407, back-rotating wheel support, 417, raised track, 408, a shaft pin, 409, b shaft pin, 5, buffer, 6, hanger, 7, connecting rod, 8, ear seat.

Detailed Description

The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention.

The utility model provides a turnbuckle pincers device of turnbuckle gyro wheel synchronous movement, as shown in fig. 1, 7 through 9, includes stand 1, elevating pulley 2, hydro-cylinder 3, turnbuckle pincers 4 and gallows 6, elevating pulley 2 sliding connection is on stand 1, and hydro-cylinder 3 sets up between stand 1 and elevating pulley 2 to drive elevating pulley 2 elevating motion on the stand. The hanging bracket 6 is also connected to the upright post 1 in a sliding manner, so that stable operation of the hanging bracket 6 can be ensured when the lifting pulley 2 moves, the lifting pulley 2 is connected with the hanging bracket 6 through a buffer device 5 such as a buffer spring or a buffer hydraulic cylinder, on one hand, the buffering function is realized in the screwing process of the pipe, and on the other hand, the axial displacement generated in the screwing or unscrewing process of the pipe is compensated. The hanger 6 is connected with four connecting rods 7, the top of the turnbuckle pliers 4 is provided with four lugs 8 which are matched with the connecting rods 7, and the hanger 6 is connected with the turnbuckle pliers 4 through the four connecting rods 7, so that the horizontal posture of the turnbuckle pliers 4 can be kept unchanged, and the turnbuckle pliers 4 can adapt to a certain amount of misalignment with the center of a pipe tool.

As shown in fig. 2 to 6, the turnbuckle pliers 4 include a frame 401, three sets of turnbuckle assemblies 402, a guide block 403 having a guide groove 413, a connecting arm 404, a clamping cylinder 405, a clamping arm 406 and a rear wheel support 407, the plane of the frame 401 is in a concave structure, the plane is disposed at the top and the bottom of the turnbuckle pliers 4, the guide block 403 is fixedly connected to the frame 401, and the guide groove 413 faces the inner side. Inside the frame 401 at the top and the bottom are a connecting arm 404 and a clamping arm 406, as shown in fig. 3, the clamping arm 406 is respectively provided with an a shaft hole 416, a b shaft hole 426 and a c shaft hole 436, wherein the frame 401 is connected with the b shaft hole 426 on the clamping arm 406 through an a pin 408; one end of the connecting arm 404 is connected with an a shaft hole 416 on the clamping arm 406 through a b pin 409, and the other end is connected with the rear rotary wheel support 407 through a pin. As shown in fig. 4, one end of the clamping cylinder 405 is connected to the b pin 409, and the other end is connected to the frame 401 through a pin. It should be noted that the connection line between the a pin 408 and the b pin 409 is not collinear with the movement direction of the clamping cylinder 405, so that when the clamping cylinder 405 pushes the b pin 409, one end of the c shaft hole 436 on the clamping arm 406 can rotate around the a pin 408. The rear wheel support 407 is provided with a protruding track 417 adapted to the guide groove 413, and when the clamping cylinder 405 stretches and contracts, the protruding track 417 slides freely in the guide groove 413, and at the same time, the movement direction of the rear wheel support 407 is limited. Three sets of swivel assemblies 402 are mounted at the c-axis bores 436 of the two clamping arms 406 and at the axis bores on the rear wheel mounts 407, respectively.

The structure of the turnbuckle pliers 4 of the invention is symmetrically arranged in the left-right direction of the guide groove 413 so as to be vertically symmetrically arranged on the plane where the clamping oil cylinder 405 is located. From the control aspect, the two groups of clamping cylinders 405 are mechanically synchronized without considering the problem of controlling synchronization of the two groups of clamping cylinders 405, so that the configuration of other related hydraulic valves is reduced, the production cost of the invention is reduced, and the control efficiency is improved.

The turnbuckle assembly 402 is composed of a power motor and a turnbuckle roller, wherein the power motor drives the turnbuckle roller to rotate. The rotary buckle roller is a friction roller with a concave-convex surface, so that the working efficiency of the pipe rotary buckle is improved; the power motor can be of a model with larger overall dimension, so that the screwing torque is improved, and the screwing speed is correspondingly improved.

In addition, the angle between the connecting arm 404 and the clamping arm 406 may be toward the center of the pipe tool or may be away from the center of the pipe tool. When the included angle between the connecting arm 404 and the clamping arm 406 is towards the center of the pipe tool, the piston of the clamping cylinder 405 stretches out to tightly hold the pipe tool, and retracts back to loosen the pipe tool; when the included angle between the connecting arm 404 and the clamping arm 406 is back to the center of the pipe tool, the piston of the clamping cylinder 405 stretches out to loosen the pipe tool, and retracts to hold the pipe tool tightly.

The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a spiral-lock pincers device of spiral-lock gyro wheel synchronous motion which characterized in that: the rotary buckle clamp comprises a stand column (1) and a rotary buckle clamp (4) arranged on the stand column (1), wherein the rotary buckle clamp (4) comprises a frame (401), a clamping oil cylinder (405), a clamping arm (406) provided with a rotary buckle component (402) and a rear rotary wheel support (407) provided with the rotary buckle component (402), the frame (401) is hinged to the middle part of the clamping arm (406), the end part of the clamping arm (406) is hinged to one end of a connecting arm (404), and the other end of the connecting arm (404) is hinged to the rear rotary wheel support (407); one end of the clamping oil cylinder (405) is connected with the hinging point of the clamping arm (406) and the connecting arm (404), and the other end of the clamping oil cylinder (405) is hinged with the frame (401); the connecting line between the middle part and the end part of the clamping arm (406) is not collinear with the movement direction of the clamping cylinder (405); a guiding device is arranged between the rear rotary wheel support (407) and the frame (401); the upright post (1) is provided with a lifting pulley (2) driven by an oil cylinder (3), the lifting pulley (2) is connected with a hanging bracket (6), and the hanging bracket (6) is connected with the turnbuckle pliers (4);

the hanger (6) is connected with four connecting rods (7), four lug seats (8) matched with the connecting rods (7) are arranged at the top of the frame (401), and the turnbuckle pliers (4) are arranged on the hanger (6) through the connecting rods (7);

the clamping arm (406) is hinged with the connecting arm (404) through a b pin shaft (409), and one end of the clamping oil cylinder (405) is fixedly connected with the b pin shaft (409);

the guide device comprises a guide block (403) and a protruding track (417) arranged on the rear rotary wheel support (407), wherein the guide block (403) is provided with a guide groove (413) for sliding the protruding track (417), and the guide block (403) is arranged on the frame (401).

2. The spinning clip device for synchronously moving spinning rollers according to claim 1, wherein: the turnbuckle assembly (402) comprises a turnbuckle roller and a power motor for driving the turnbuckle roller to rotate.

3. The spinning clip device for synchronously moving spinning rollers according to claim 1, wherein: the hanging bracket (6) is connected with the upright post (1) in a sliding way.

4. The spinning clip device for synchronously moving spinning rollers according to claim 1, wherein: a buffer device (5) is arranged between the lifting pulley (2) and the hanging bracket (6).

5. The spinning clip apparatus for synchronously moving spinning rollers according to claim 4, wherein: the buffer device (5) is a buffer spring or a buffer hydraulic cylinder.