CN213510503U

CN213510503U - Self-centering hydraulic rotary table

Info

Publication number: CN213510503U
Application number: CN202022741126.8U
Authority: CN
Inventors: 韩光禄
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-11-24
Filing date: 2020-11-24
Publication date: 2021-06-22
Anticipated expiration: 2030-11-24

Abstract

The utility model relates to a self-centering hydraulic turntable, which comprises a casing, a central pipe extending up and down is rotatably installed in the casing, a plurality of clamping block passages penetrating inside and outside are provided on the side of the central pipe, and the clamping block passages are slidably installed. There is a clamping block, the lower end face or the lower end face of the clamping block is provided with a driven plane thread, a driving disk is rotatably installed on the central pipe, and the driving disk is provided with an active plane thread that engages with the driven plane thread, and the casing is installed with Hydraulic motor that drives the drive disc. The self-centering hydraulic turntable is driven by a plurality of clamping blocks to rotate the pipe string. With the torque output of the hydraulic motor, the clamping blocks can further clamp the pipe string. The device clamps the pipe string reliably and is not easy to slip off. Multiple clamping blocks are jointly driven by The disc clamps the pipe string by self-centering, and the action is accurate, ensuring the coaxiality of the pipe string and the central pipe, and ensuring the quality of workover operations.

Description

Self-centering hydraulic rotary table

Technical Field

The utility model relates to the field of petroleum machinery, specific self-centering hydraulic pressure carousel that says so.

Background

At present, mechanical equipment commonly used for oil well drilling and workover operations comprises a drilling machine and a workover rig, the mechanical equipment is provided with a hydraulic rotary table to meet the requirements of the workover operations, the hydraulic rotary table is used as a main component of a rotary system of the drilling machine or the workover rig, and the action process is to change the rotary motion into vertical rotary motion through a speed reducing mechanism.

The phenomenon that the clamping of a pipe column is unstable is found in the use of the existing hydraulic rotary table, and the observation shows that the pipe column deviates from the center of a central pipe due to the fact that the coaxiality of the pipe column and the central pipe in the hydraulic rotary table has large errors.

Disclosure of Invention

The utility model aims at the above-mentioned problem provide a high from centering hydraulic pressure carousel of axiality when the centre gripping is stable, tubular column and center tube centre gripping.

In order to achieve the above object, the utility model relates to a from centering hydraulic pressure carousel, including the casing, its structural feature is: the hydraulic motor is characterized in that a central tube extending up and down is rotatably mounted in the shell, a plurality of inside and outside penetrating clamping block channels are formed in the side portion of the central tube, clamping blocks are slidably mounted in the clamping block channels, driven plane threads are formed in the lower end face or the lower end face of each clamping block, a driving disc is rotatably mounted on the central tube, driving plane threads meshed with the driven plane threads are arranged on the driving disc, and a hydraulic motor for driving the driving disc to rotate is mounted on the shell.

After adopting above-mentioned structure, a plurality of clamp splices are carried out the clamping control by the driving-disc jointly, can guarantee the action synchronization of a plurality of clamp splices, in equipment course of the work, hydraulic motor output torque, the driving-disc transmits the moment of torsion to the clamp splice, synchronous clamping action is accomplished to a plurality of clamp splices this moment, simultaneously here, the clamp splice drives the tubular column rotatory, along with hydraulic motor torque output, the clamp splice can further press from both sides tight tubular column, this device tubular column presss from both sides tightly reliably, the slippage is difficult, a plurality of clamp splices carry out the self-centering by the driving-disc jointly and press from both sides tight tubular column, the action is accurate, guarantee the axiality of tubular column and center tube.

In order to further enable the pipe column to be accurately positioned, the number of the clamping block channels is three, the direction of the clamping block channels faces to the axis of the central pipe, and the number of the clamping blocks is three and corresponds to the three clamping block channels one to one. The three clamping blocks synchronously clamp the tubular column during working, so that the tubular column is reliably clamped and accurately positioned.

In order to ensure the sliding track of the clamping block, the two sides of the clamping block are fixedly provided with guide blocks, and the central tube is provided with a guide channel matched with the guide blocks. The action process of the clamping block is limited through the guide block and the guide channel.

In order to ensure that the pipe column is reliably clamped and prevent the pipe column from slipping, one end of the clamping block, which is close to the axis of the central pipe, is provided with a tooth plate, the end surface of the tooth plate is provided with convex patterns, the clamping block is provided with a threaded hole, the tooth plate is provided with a through hole corresponding to the clamping block, and the tooth plate is provided with a bolt which passes through the through hole and is screwed in the threaded hole in a threaded manner.

About the installation position of the driving disk, the driving disk is sleeved outside the central tube and is in running fit with the central tube,

with regard to the specific structure of the driving plane thread and the driven plane thread, the driving plane thread is provided in a spiral shape on the upper side of the driving disk, and the driven plane thread is in a partially truncated spiral shape. The structure of the driving plane thread and the driven plane thread is similar to the meshing structure of a jaw and a large bevel gear of a chuck of a machine tool.

The power transmission structure of the hydraulic motor is characterized in that a transmission gear is sleeved on the outer side of a driving disc, an intermediate gear meshed with the transmission gear is rotatably installed in a shell, a driving gear is fixedly installed on an output shaft of the hydraulic motor, and the driving gear is meshed with the intermediate gear.

The shell comprises an upper shell and a lower shell which are spliced with each other, connecting lug plates which correspond to each other are fixedly arranged on the upper shell and the lower shell, and bolts fixedly connecting the upper shell and the lower shell are arranged on the connecting lug plates in a screwed mode. After adopting above-mentioned structure, two parts constitute about the casing, make things convenient for the assembly of spare part in the casing.

The upper part of the shell is fixedly provided with a connecting seat, and the connecting seat is provided with an avoiding channel corresponding to the central tube.

Because above-mentioned technical scheme's application is following right the utility model discloses an advantage effect carries out concrete analysis.

To sum up the utility model discloses a plurality of clamp splices are carried out clamping control by the driving-disc jointly, can guarantee that the action of a plurality of clamp splices is synchronous, in equipment course of the work, hydraulic motor output torque, the driving-disc transmits the clamp splice with the moment of torsion on, synchronous clamping action is accomplished to a plurality of clamp splices this moment, simultaneously here, the clamp splice drives the tubular column rotatory, along with hydraulic motor torque output, the clamp splice can further press from both sides tight tubular column, this device tubular column presss from both sides tightly reliably, difficult slippage, a plurality of clamp splices carry out from centering clamp tube column jointly by the driving-disc, the action is accurate, guarantee the axiality of tubular column and center tube, ensure workover quality.

Drawings

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings:

fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a portion of the enlarged structure of point A in FIG. 1;

FIG. 3 is a schematic structural view of a drive plate;

fig. 4 is a schematic structural view of the clamping block.

In the figure: the hydraulic motor comprises a hydraulic motor 1, a shell 2, a central tube 3, a clamping block 4, a connecting seat 5, driving plane threads 6, a driving disc 7, a guide channel 8, a clamping block channel 9, a tooth plate 10, a transmission gear 11, an intermediate gear 12, a driving gear 13, a guide block 14, driven plane threads 15, an upper shell 16 and a lower shell 17.

Detailed Description

Referring to the drawings, the utility model discloses a from centering hydraulic pressure carousel, including casing 2, the center tube 3 that extends from top to bottom is installed to 2 internal rotations of casing, the lateral part of center tube 3 is seted up a plurality of inside and outside clamp splice passageways 9 that run through, slidable mounting has clamp splice 4 in the clamp splice passageway 9, driven plane screw thread 15 has been seted up to the lower terminal surface of clamp splice 4 or lower terminal surface, it installs driving-disc 7 to rotate on the center tube 3, be equipped with on the driving-disc 7 with driven plane screw thread 15 engaged with initiative plane screw thread 6, install driving-disc 7 pivoted hydraulic motor 1 on the casing 2.

After adopting above-mentioned structure, a plurality of clamp splice 4 are carried out clamping control by driving-disc 7 jointly, can guarantee that the action of a plurality of clamp splice 4 is synchronous, in the equipment course of operation, hydraulic motor 1 output torque, driving-disc 7 transmits the moment of torsion to clamp splice 4 on, a plurality of clamp splice 4 accomplish synchronous clamping action this moment, simultaneously here, clamp splice 4 drives the tubular column rotatory, along with hydraulic motor 1 torque output, clamp splice 4 can further press from both sides tight tubular column, this device tubular column presss from both sides tightly reliably, difficult slippage, a plurality of clamp splice 4 carry out self-centering by driving-disc 7 jointly and press from both sides tight tubular column, the action is accurate, guarantee the axiality of tubular column and center tube 3, ensure workover quality.

Referring to fig. 1, in order to further accurately position the pipe column, three clamping block channels 9 are annularly arranged, the three clamping block channels 9 are arranged at equal intervals, the clamping block channels 9 are arranged in a direction facing to the axis of the central pipe 3, and the three clamping blocks 4 are arranged and correspond to the three clamping block channels 9 one by one. The three clamping blocks 4 synchronously clamp the tubular column during working, so that the tubular column is reliably clamped and accurately positioned.

Referring to fig. 1 and 2, in order to ensure the sliding track of the clamping block 4, guide blocks 14 are fixedly arranged on two sides of the clamping block 4, and a guide channel 8 matched with the guide blocks 14 is formed in the central tube 3. The action process of the clamping block 4 is limited through the guide block 14 and the guide channel 8.

Referring to the attached drawing 1, in order to ensure reliable clamping of the pipe column and prevent the pipe column from slipping, a tooth plate 10 is installed at one end, close to the axis of a central pipe 3, of a clamping block 4, a convex pattern is arranged on the end face of the tooth plate 10, a threaded hole is formed in the clamping block 4, a through hole corresponding to the clamping block 4 is formed in the tooth plate 10, and a bolt penetrating through the through hole and screwed in the threaded hole is screwed on the tooth plate 10.

Reference is made to figure 1. Regarding the installation position of the driving disk 7, the driving disk 7 is sleeved outside the central tube 3, the driving disk 7 is in running fit with the central tube 3,

referring to fig. 3 and 4, regarding the specific structure of the driving flat thread 6 and the driven flat thread 15, the driving flat thread 6 is disposed on the upper side of the driving disk 7 in a spiral shape, and the driven flat thread 15 is in a partially truncated spiral shape. The configuration of the driving flat thread 6 and the driven flat thread 15 is similar to the engagement configuration of the jaws and the large bevel gear of the chuck of the machine tool.

Referring to fig. 1, regarding the power transmission structure of the hydraulic motor 1, a transmission gear 11 is sleeved outside the driving disc 7, an intermediate gear 12 engaged with the transmission gear 11 is rotatably installed in the housing 2, a driving gear 13 is fixedly installed on an output shaft of the hydraulic motor 1, and the driving gear 13 is engaged with the intermediate gear 12.

Referring to fig. 1, regarding the specific structure of the housing 2, the housing 2 includes an upper housing 16 and a lower housing 17 which are spliced with each other, and the upper housing 16 and the lower housing 17 are fixedly provided with corresponding connection ear plates, and the connection ear plates are screwed with bolts for fixedly connecting the two. After adopting above-mentioned structure, casing 2 upper and lower two parts constitute, make things convenient for the assembly of spare part in the casing 2.

Referring to the attached drawing 1, the upper part of the shell 2 is fixedly provided with a connecting seat 5, and the connecting seat 5 is provided with an avoiding channel corresponding to the central tube 3.

To sum up, the present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications are intended to be within the scope of the present invention.

Claims

1. A self-centering hydraulic rotary table comprises a shell (2) and is characterized in that: center tube (3) that extend from top to bottom are installed to casing (2) internal rotation, a plurality of inside and outside clamp splice passageways (9) that run through are seted up to the lateral part of center tube (3), slidable mounting has clamp splice (4) in clamp splice passageway (9), driven plane screw thread (15) have been seted up to the lower terminal surface or the lower terminal surface of clamp splice (4), it installs driving-disc (7) to rotate on center tube (3), be equipped with on driving-disc (7) with driven plane screw thread (15) engaged with initiative plane screw thread (6), install drive driving-disc (7) pivoted hydraulic motor (1) on casing (2).

2. The self-centering hydraulic swivel plate of claim 1, wherein: the clamp splice channels (9) are annularly arranged in three, the clamp splice channels (9) are arranged in the direction towards the axis of the central tube (3), and the clamp splices (4) are arranged in three and are in one-to-one correspondence with the three clamp splice channels (9).

3. The self-centering hydraulic swivel plate of claim 2, wherein: guide blocks (14) are fixedly arranged on two sides of the clamping block (4), and a guide channel (8) matched with the guide blocks (14) is formed in the central pipe (3).

4. The self-centering hydraulic swivel plate of claim 3, wherein: tooth plate (10) are installed to clamp splice (4) one end near center tube (3) axle center, are equipped with the burr on the terminal surface of tooth plate (10), set up threaded hole on clamp splice (4), set up the through-hole corresponding with clamp splice (4) on tooth plate (10), and the spiral shell is equipped with the bolt that passes through-hole spiral shell dress in the threaded hole on tooth plate (10).

5. The self-centering hydraulic swivel plate of claim 1, wherein: the driving disc (7) is sleeved on the outer side of the central tube (3), and the driving disc (7) is in running fit with the central tube (3).

6. The self-centering hydraulic swivel plate of claim 5, wherein: the driving plane thread (6) is arranged on the upper side of the driving disk (7) in a spiral shape, and the driven plane thread (15) is in a partially-cut spiral shape.

7. The self-centering hydraulic swivel plate of claim 6, wherein: the outer side of the driving disc (7) is sleeved with a transmission gear (11), an intermediate gear (12) meshed with the transmission gear (11) is rotatably mounted in the shell (2), a driving gear (13) is fixedly mounted on an output shaft of the hydraulic motor (1), and the driving gear (13) is meshed with the intermediate gear (12).

8. The self-centering hydraulic swivel plate of claim 1, wherein: casing (2) are including last casing (16) and lower casing (17) of mutual concatenation, go up casing (16) and set firmly the engaging lug board that corresponds each other on casing (17) down, and the spiral shell is equipped with the bolt with both fixed connection on the engaging lug board.

9. The self-centering hydraulic swivel plate of claim 1, wherein: the upper portion of casing (2) sets firmly connecting seat (5), sets up the passageway of dodging corresponding with center tube (3) on connecting seat (5).