CN218971144U

CN218971144U - Automatic centering device of regulation

Info

Publication number: CN218971144U
Application number: CN202223322816.5U
Authority: CN
Inventors: 欧军; 魏江涛; 孙欧阳; 罗勇; 裴亚涛; 余宇舟
Original assignee: Hubei Zuoxiang Petroleum Machinery Manufacturing Co ltd
Current assignee: Hubei Zuoxiang Petroleum Machinery Manufacturing Co ltd
Priority date: 2022-12-12
Filing date: 2022-12-12
Publication date: 2023-05-05
Anticipated expiration: 2032-12-12

Abstract

The utility model relates to an automatic adjusting centering device, and belongs to the technical field of drilling equipment. The clamp comprises a clamp body, a positioning block and a limiting mechanism, wherein the positioning block is movably arranged in the middle of the clamp body, the limiting mechanisms are symmetrically arranged on the clamp body at two sides of the positioning block, each limiting mechanism comprises a guide plate, a connecting plate and a compression spring, the connecting plate is movably inserted on the clamp body, the guide plate is fixedly arranged on one side of the connecting plate, and the compression spring is arranged between the other side of the connecting plate and the clamp body. The roller shaft on the guide plate is contacted with the pipe column, so that the friction force between the guide plate and the pipe column is effectively reduced, and the service life of the guide plate is prolonged; under the cooperation of the driving rack, the driving gear, the bevel gear set, the driven gear and the driven rack, the positioning block and the guide plate move by the same distance, so that the centering of the pipe columns with different pipe diameters is realized, the problems that the universality of the existing transition seat is poor, the disassembly and assembly are time-consuming and labor-consuming when the transition seat is replaced, and the iron roughneck is easy to damage due to frequent use are solved.

Description

Automatic centering device of regulation

Technical Field

The utility model relates to an automatic adjusting centering device, and belongs to the technical field of drilling equipment.

Background

In drilling and workover operations, the center of well drilling pipe utensil and well head center misalignment can lead to appearing skinning or skid the phenomenon when breaking out, cause the damage to the pipe utensil, and the iron roughneck binding clip is to the looking for of well drilling pipe utensil, generally accomplish through manual auxiliary operation, not only increased operator's working strength, and reduced the work efficiency of iron roughneck, patent document data such as application number 201721501015.1 discloses an iron roughneck and found device and iron roughneck, it includes transition seat, buffer gear and the pincers body, during operation, the pincers body removes to the pipe utensil, the pipe utensil is under the guide effect of flaring groove wall and pincers body floating function, along the cell wall removal of guide way, spacing to the tubular column left and right sides direction through the spacing groove in the transition seat, sense the tubular column through the first detecting element on the pincers body, make the pincers body stop stretching, realize looking for the front and back, thereby reduced manual operation, reduce operator's working strength, improve work efficiency. Because the limit groove in the transition seat corresponds to the pipe diameter of the pipe column in size, when pipe columns with different diameters are used, the transition seat cannot meet the use requirement, different transition seats need to be replaced, the universality is poor, and the disassembly and assembly work during replacement is time-consuming and laborious; on the other hand, due to frequent work of an iron driller, the wall of the flaring groove of the transition seat is rubbed with the pipe column for a long time, so that the transition seat is easy to damage, and the service life of the transition seat is reduced.

Disclosure of Invention

The utility model aims at: the automatic adjusting centering device is simple in structure, capable of automatically adjusting and centering the transition seat according to the size of the drilling pipe tool, high in universality, and capable of solving the problems that the existing transition seat cannot adapt to pipe columns with different pipe diameter sizes, is poor in universality, time and labor are wasted in disassembly and assembly when the transition seat is replaced, and an iron driller is frequently and practically used, so that the transition seat is easy to damage.

The technical scheme of the utility model is as follows:

the utility model provides an automatic centering device of regulation, it comprises pincers body, positioning mechanism, drive mechanism and locating piece, its characterized in that: the middle part of the clamp body is provided with a positioning block, the clamp bodies on two sides of the positioning block are symmetrically provided with limiting mechanisms, each limiting mechanism is composed of a guide plate, a connecting plate and a compression spring, the connecting plates are movably inserted on the clamp body, the guide plates are fixedly arranged on one sides of the connecting plates, one ends of the guide plates on one sides of the clamp body are provided with transmission mechanisms, the guide plates are connected with the positioning block through the transmission mechanisms, and the compression springs are arranged between the other sides of the connecting plates and the clamp body.

And rollers for reducing friction resistance between the connecting plate and the pliers body are arranged at two ends of the connecting plate.

One side of the guide plate is composed of a guide cambered surface and a limit straight surface, and the guide cambered surface and the limit straight surface are of an integrated structure.

The guide cambered surface and the limiting straight surface are provided with a plurality of roll shafts at intervals through an assembly short shaft.

The driving mechanism consists of a driving rack, a driving gear, a bevel gear group, a driven gear and a driven rack, wherein the driving rack is fixedly arranged on the guide plate, the driving gear is arranged at the bottom of the driving rack, the driven rack is fixedly arranged on a positioning block below the driving gear, the driven gear is arranged on one side of the driven rack, the driven rack is in meshed connection with the driven gear, and the driving gear is in meshed transmission connection with the driven gear through the bevel gear group.

The bevel gear group consists of a bevel gear A, a bevel gear B, a bevel gear C and a bevel gear D, wherein the bevel gear A is connected with the driving gear through a connecting shaft, the bevel gear B is connected with the bevel gear C through a connecting shaft, the bevel gear D is connected with the driven gear through a connecting shaft, the bevel gear A is in meshed connection with the bevel gear B, and the bevel gear C is in meshed connection with the bevel gear D.

The utility model has the beneficial effects that:

the automatic adjusting centering device is in contact with the pipe column through the roll shaft on the guide plate, so that friction force between the automatic adjusting centering device and the pipe column is effectively reduced, the guide plate is prevented from being damaged, and the service life of the guide plate is prolonged; the pipe column is enabled to move along the axial limiting straight surface of the roller through the guide cambered surface, the pipe column extrudes the limiting straight surfaces on two sides, so that the driving rack is pushed to move, the positioning blocks are enabled to move the same distance under the matching action of the driving rack, the driving gear, the bevel gear set, the driven gear and the driven rack, the pipe column centering of different pipe diameters is achieved, the problem that the existing transition seat cannot adapt to the pipe column of different pipe diameter sizes is solved, the universality is poor, the disassembly and assembly are time-consuming and labor-consuming when the transition seat is replaced, and the problem that the transition seat is easy to damage is caused by frequent use of an iron driller is solved.

Description of the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a construction of the present utility model for a large pipe diameter size pipe string;

fig. 3 is a schematic side view of the transmission mechanism of the present utility model.

In the figure: 1. a clamp body; 2. a positioning block; 3. pressing blocks; 4. a guide plate; 5. a connecting plate; 6. a compression spring; 7. a roller; 8. a roll shaft; 9. a guide cambered surface; 10. limiting straight surfaces; 11. a driving rack; 12. a drive gear; 13. a driven rack; 14. a driven gear; 15. a bevel gear A; 16. a bevel gear B; 17. a bevel gear C; 18. a bevel gear D; 19. and (5) a tubular column.

Detailed Description

The automatic adjusting centering device is composed of a clamp body 1, a positioning mechanism and a limiting mechanism, wherein a U-shaped opening is formed in the middle of the clamp body 1, the inner wall of the U-shaped opening is arc-shaped, a positioning block 2 is movably mounted on the clamp body 1 at the bottom of the opening, one end of the positioning block 2 extends to the outer side of the clamp body 1, a pressing block 3 is arranged at the end of the positioning block 2 extending to the outer side of the clamp body 1, a pressure-sensitive sensor is arranged on the pressing block 3, and the pressing block 3 contacts with a tubular column 19 to touch the pressure-sensitive sensor, so that the centering position is achieved.

The symmetrical assembly grooves are formed in the inner wall of the clamp body 1 on two sides of the positioning block 2, a limiting mechanism is movably mounted in the assembly grooves and consists of a guide plate 4, a connecting plate 5 and a compression spring 6, the connecting plate 5 is movably inserted in the assembly grooves of the clamp body 1, rollers 7 for reducing friction resistance between the connecting plate 5 and the clamp body 1 are arranged at two ends of the connecting plate 5, so that when the pipe column 19 extrudes the connecting plate 5 on two sides, the connecting plate 5 slides in the assembly grooves of the clamp body 1, and meanwhile, the rollers 7 have a righting effect on the connecting plate 5 to center the connecting plate 5 in the assembly grooves.

One side fixed mounting of connecting plate 5 has deflector 4, the medial surface of deflector 4 is the same with the open-ended inner wall arc of the pincers body 1, the lateral surface of deflector 4 comprises guide cambered surface 9 and spacing straight face 10, guide cambered surface 9 and spacing straight face 10 are integrated into one piece structure, be the interval form through the assembly minor axis on guide cambered surface 9 and the spacing straight face 10 and be provided with a plurality of roller 8, reduce the friction damage of tubular column 19 and deflector 4's guide cambered surface 9 and spacing straight face 10 through roller 8, the life of deflector 4 is prolonged, the front end of deflector 4 and the end parallel and level of pincers body 1, the rear end of deflector 4 is provided with "T" shape slider, the pincers body 1 inner wall that corresponds with "T" shape slider is provided with the spout, the spout has spacing and guiding action to deflector 4, deflector 4 and pincers body 1 inner wall pass through the cooperation sliding connection of "T" shape slider and spout.

The back of the guide plate 4 at one side of the pliers body 1 is provided with a transmission mechanism, the transmission mechanism is composed of a driving rack 11, a driving gear 12, a bevel gear group, a driven gear 14 and a driven rack 13, the driving rack 11 is axially and fixedly arranged on the guide plate 4, the bottom of the driving rack 11 is provided with the driving gear 12, the driving rack 11 is in meshed connection with the driving gear 12, the driven rack 13 is radially and fixedly arranged on the positioning block 2 below the driving gear 12, one side of the driven rack 13 is provided with the driven gear 14, the driven rack 13 is in meshed connection with the driven gear 14, the bevel gear group is arranged between the driving gear 12 and the driven gear 14, the bevel gear group is composed of a bevel gear A15, a bevel gear B16, a bevel gear C17 and a bevel gear D18, the bevel gear A15 is connected with the driving gear 12 through a connecting shaft, the bevel gear B16 and the bevel gear C17 are connected with the driven gear 14 through the connecting shaft, the bevel gear A15 is in meshed connection with the bevel gear B16, the bevel gear C17 is in meshed connection with the bevel gear D18, the driving gear 12 and the driven gear 14 is driven by the bevel gear B16, and the bevel gear C17 is matched with the bevel gear C18, and the bevel gear C is driven by the driving gear 14 to move on the driving gear 1 in the axial direction through the driving gear 12, and the driving gear 1 is driven by the driving gear 1.

The compression spring 6 is arranged between the other side of the connecting plate 5 and the clamp body 1, the connecting plate 5 is enabled to extend to the middle of the opening of the clamp body 1 through the elastic force of the compression spring 6, the guide plate 4 is convenient to contact with the pipe column 19 and guide the movement of the pipe column 19 relative to the guide plate 4, the compression spring 6 is in a natural state in an initial state, the axial distance between the guide plates 4 is 2 times of the radial distance between the pressing block 3 and the center of the clamp body 1, at the moment, the axial distance between the guide plates 4 is the minimum pipe diameter size of the applicable pipe column 19, and when the inner side surface of the guide plates 4 is attached to the inner wall of the opening of the clamp body 1, the axial distance between the guide plates 4 is the maximum pipe diameter size of the applicable pipe column 19.

The centering device is provided with a controller and a rotary electromagnetic valve, wherein the controller is electrically connected with the rotary electromagnetic valve and a pressure-sensitive sensor, and the controller is used for controlling the rotary electromagnetic valve and the pressure-sensitive sensor to sequentially and orderly act.

The centering device is firstly arranged on the upper part of an iron driller before working, the iron driller is used for completing the buckling or the unbuckling of two pipe columns 19, and mainly comprises a boom device (not shown in the figure) and a centering device, the pliers body 1 is driven to move to a target pipe column 19 to be out through the multi-degree-of-freedom motion of the boom device, then the pliers body 1 holds the pipe column 19 tightly, and the buckling or the unbuckling between the two pipe columns 19 is completed.

During operation, the clamp body 1 moves towards the pipe column 19 under the drive of the arm support device, the pipe column 19 is firstly contacted with the roller shaft 8 of the guide cambered surface 9, meanwhile, under the action of the rotary electromagnetic valve, the direction correction is carried out in the moving process of the clamp body 1, the pipe column 19 gradually moves to the middle part of the clamp body 1 along the guide cambered surface 9, along with the movement of the pipe column 19, when the pipe column 19 moves to be in conflict with the roller shaft 8 of the limiting straight surface 10, the pipe column 19 is kept left and right at the middle part of the clamp body 1 by the compression springs 6 on the two sides of the pipe column 19, the compression springs 6 are compressed by the connecting plate 5 under the action of the reaction force of the pipe column 19, the rear end of the guide plate 4 axially moves along the sliding groove of the clamp body 1, the driving rack 11 synchronously moves, the driving rack 11 drives the driving gear 12 to rotate, the driven gear 14 rotates under the cooperation of the bevel gear A15, the bevel gear B16, the bevel gear C17 and the bevel gear D18, the driven rack 14 radially moves, thereby driving the positioning block 2 to move downwards, the positioning block 4 axially moves, the distance of the positioning block 4 is kept at the left and right at the same distance as the 2, the distance of the radial movement of the positioning block 4 is regulated by the guide plate 4, the same distance, and the distance of the pipe column 19 moves automatically and the distance is adjusted to be equal to the distance of the pipe column 19 and the same according to the different sizes.

Along with the continuous movement of the clamp body 1, the pipe column 19 is contacted with the pressing block 3 at the end of the positioning block 2 and touches the pressure sensor, the pressure sensor transmits signals to the controller, and the controller controls the clamp body 1 to stop moving, so that the pipe column 19 is centered in front and back relative to the clamp body 1, and the centering of the pipe column 19 is completed.

The automatic adjusting centering device is contacted with the pipe column 19 through the roll shaft 8 on the guide plate 4, so that the friction force between the automatic adjusting centering device and the pipe column 19 is effectively reduced, the guide plate 4 is prevented from being damaged, and the service life of the guide plate 4 is prolonged; the pipe column 19 moves along the roll shaft 8 to the limiting straight surface 10 through the guide cambered surface 9, the pipe column 19 extrudes the limiting straight surfaces 10 on two sides, so that the driving rack 11 is pushed to move, the positioning block 2 moves by the same distance under the matching action of the driving rack 11, the driving gear 12, the bevel gear group, the driven gear 14 and the driven rack 13, the pipe column 19 with different pipe diameters is centered, the problem that the existing transition seat cannot adapt to the pipe column 19 with different pipe diameter sizes, the universality is poor, time and labor are wasted in disassembly and assembly when the transition seat is replaced, and an iron roughneck is frequently used, so that the transition seat is easy to damage is solved.

Claims

1. The utility model provides an automatic centering device of regulation, it comprises pincers body (1), positioning mechanism, drive mechanism and locating piece (2), its characterized in that: the middle part of the clamp body (1) is provided with a positioning block (2), the clamp bodies (1) on two sides of the positioning block (2) are symmetrically provided with limiting mechanisms, each limiting mechanism consists of a guide plate (4), a connecting plate (5) and a compression spring (6), the connecting plate (5) is movably inserted on the clamp body (1), one side of the connecting plate (5) is fixedly provided with the guide plate (4), one end of the guide plate (4) on one side of the clamp body (1) is provided with a transmission mechanism, the guide plate (4) is connected with the positioning block (2) through the transmission mechanism, and the compression spring (6) is arranged between the other side of the connecting plate (5) and the clamp body (1).

2. An automatically adjustable centering device according to claim 1, wherein: two ends of the connecting plate (5) are provided with rollers (7) for reducing friction resistance between the connecting plate and the pliers body (1).

3. An automatically adjustable centering device according to claim 1, wherein: one side of the guide plate (4) is composed of a guide cambered surface (9) and a limiting straight surface (10), and the guide cambered surface (9) and the limiting straight surface (10) are of an integrated structure.

4. A self-adjusting centering device as claimed in claim 3, wherein: a plurality of roll shafts (8) are arranged on the guide cambered surface (9) and the limiting straight surface (10) at intervals through an assembly short shaft.

5. An automatically adjustable centering device according to claim 1, wherein: the driving mechanism consists of a driving rack (11), a driving gear (12), a bevel gear set, a driven gear (14) and a driven rack (13), wherein the driving rack (11) is fixedly arranged on the guide plate (4), the driving gear (12) is arranged at the bottom of the driving rack (11), the driven rack (13) is fixedly arranged on the positioning block (2) below the driving gear (12), the driven gear (14) is arranged on one side of the driven rack (13), the driven rack (13) is meshed with the driven gear (14), and the driving gear (12) is meshed with the driven gear (14) through the bevel gear set.

6. An automatically adjustable centering device as claimed in claim 5, wherein: the bevel gear set consists of a bevel gear A (15), a bevel gear B (16), a bevel gear C (17) and a bevel gear D (18), wherein the bevel gear A (15) is connected with a driving gear (12) through a connecting shaft, the bevel gear B (16) and the bevel gear C (17) are connected through a connecting shaft, the bevel gear D (18) is connected with a driven gear (14) through a connecting shaft, the bevel gear A (15) is meshed with the bevel gear B (16), and the bevel gear C (17) is meshed with the bevel gear D (18).