CN111573508B

CN111573508B - Moving device for oil pipe in shaft

Info

Publication number: CN111573508B
Application number: CN202010248801.5A
Authority: CN
Inventors: 蒲泽川; 刘端; 桑雪梅
Original assignee: Wuhan Marine Machinery Plant Co Ltd
Current assignee: Wuhan Marine Machinery Plant Co Ltd
Priority date: 2020-04-01
Filing date: 2020-04-01
Publication date: 2023-04-07
Anticipated expiration: 2040-04-01
Also published as: CN111573508A

Abstract

The utility model provides a mobile device for oil pipe in axle belongs to the assembly field. The moving device comprises an expansion cylinder, a mandrel and a driving piece; the mandrel is coaxially inserted into the expansion cylinder, a first end of the mandrel is provided with a limit baffle which is positioned outside the expansion cylinder, the limit baffle abuts against the first end of the expansion cylinder towards the surface of the mandrel, the mandrel is sleeved with a driving piece, and the driving piece abuts against the second end of the expansion cylinder; the expansion cylinder is provided with a plurality of strip-shaped slits, each slit is parallel to the axis of the expansion cylinder, the opening of each slit is positioned at the first end of the expansion cylinder, and the slits extend from the opening to the second end of the expansion cylinder; the driver is configured to drive the second end of the expansion cylinder to move towards the limit stop. This openly can carry out the operation in narrow and small space through expanding a tight section of thick bamboo, makes interior oil pipe atress even, can not cause the damage to interior oil pipe. The requirement on environment is not high, and the operability is strong.

Description

Moving device for oil pipe in shaft

Technical Field

The disclosure belongs to the field of assembly, and particularly relates to a moving device for an oil pipe in a shaft.

Background

In the industrial production process, certain procedures need to move the oil pipe in the shaft.

In the related art, the existing tools, such as a strap, a caliper, etc., are generally used to fix or clamp the tubing via the strap or the caliper, and then the strap or the caliper is pulled to move the tubing in the shaft.

However, due to the narrow working space and the special structure of the oil pipe in the shaft, when the oil pipe in the shaft is moved by means of a hanging strip, a caliper and the like, the oil pipe is easily damaged, so that the damage of the oil pipe is caused, and the normal use of the oil pipe is influenced.

Disclosure of Invention

The embodiment of the disclosure provides a moving device for an oil pipe in a shaft, which can effectively move the oil pipe in the shaft. The technical scheme is as follows:

the embodiment of the disclosure provides a moving device for an oil pipe in a shaft, which comprises an expansion cylinder, a mandrel and a driving piece;

the mandrel is coaxially inserted into the expansion cylinder, a first end of the mandrel is provided with a limit baffle which is positioned outside the expansion cylinder, the limit baffle abuts against the first end of the expansion cylinder towards the surface of the mandrel, a driving piece is sleeved on the mandrel, and the driving piece abuts against a second end of the expansion cylinder;

the expansion and tightening cylinder is provided with a plurality of strip-shaped slits, each slit is parallel to the axis of the expansion and tightening cylinder, the opening of each slit is positioned at the first end of the expansion and tightening cylinder, and the slits extend from the opening to the second end of the expansion and tightening cylinder;

the driver is configured to drive the second end of the expansion cylinder to move towards the limit stop.

In an implementation of this disclosure, the position that the periphery wall of dabber is close to the second end is provided with the external screw thread, the external screw thread is followed the length direction of dabber extends, the driving piece suit is in the spindle, just the driving piece with external screw thread fit.

In another implementation manner of the present disclosure, the driving member includes a first driving nut and a second driving nut, the first driving nut and the second driving nut are both sleeved on the mandrel, and the first driving nut and the second driving nut are both in threaded fit with the external thread.

In yet another implementation of the present disclosure, each of the slits has a length that is half of a length of the expansion cylinder.

In another implementation manner of the present disclosure, the limiting baffles are perpendicular to the mandrel, and the outer edges of the limiting baffles all protrude from the outer peripheral wall of the mandrel.

In another implementation manner of the present disclosure, a flange is coaxially disposed in the middle of the outer peripheral wall of the mandrel, and the outer peripheral wall of the flange is in sliding fit with the inner peripheral wall of the expansion cylinder.

In another implementation manner of the present disclosure, a backing ring is slidably sleeved on the mandrel, the backing ring is located outside the expansion cylinder, one plate surface of the backing ring abuts against the second end of the expansion cylinder, and the other plate surface of the backing ring abuts against the driving member.

In another implementation manner of the present disclosure, two tangent planes are provided on the outer peripheral wall of the mandrel, the two tangent planes are arranged in parallel relatively, and the two tangent planes are located outside the expansion cylinder.

In another implementation manner of the present disclosure, a lifting ring for connecting the steel wire rope is inserted into the second end of the mandrel.

In yet another implementation of the present disclosure, the expansion cylinder is a seamless steel tube.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

when oil pipe moved in the countershaft through the mobile device that is used for oil pipe in the countershaft that this embodiment provided, can insert the axle with dabber and the tight section of thick bamboo that expands in the oil pipe in the countershaft together, because this mobile device includes the driving piece, so, can move towards limit baffle through the tight section of thick bamboo that expands of driving piece drive, make the tight section of thick bamboo that expands take place the bulging deformation by the department under limit baffle and the clamping effect of driving piece, make the tight section of thick bamboo that expands can with the inner wall in the axle in close contact with, finally will expand tight section of thick bamboo and the axle in oil pipe through the pulling dabber and remove together. Because the mandrel and the expansion cylinder are inserted in the oil pipe in the shaft, the space is not occupied, the oil pipe in the shaft is moved under the condition that the mandrel and the expansion cylinder are clamped in a narrow space and outside the oil pipe, the manufacturability of the movement of the oil pipe in the shaft is improved, and the oil pipe in the shaft is protected.

The moving device for the oil pipe in the shaft provided by the embodiment is simple in structure, convenient to use and low in cost, can operate in a narrow space, enables the stress of the oil pipe in the shaft to be uniform, and cannot damage the oil pipe in the shaft. The requirement on environment is not high, and the operability is strong.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a cross-sectional view of a displacement device for an oil tube in a shaft provided by an embodiment of the present disclosure;

fig. 2 is a cross-sectional view of a cinch cartridge provided by embodiments of the present disclosure;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a cross-sectional view of a mandrel provided by an embodiment of the present disclosure;

FIG. 5 is a cross-sectional view of a grommet provided by an embodiment of the present disclosure;

fig. 6 is a usage state diagram of a mobile device provided in an embodiment of the present disclosure.

The symbols in the drawings represent the following meanings:

1. expanding and tightening the cylinder; 10. an opening; 11. slotting;

2. a mandrel; 20. an external thread; 21. a limiting baffle; 22. a flange; 23. cutting into noodles; 24. a threaded hole; 25. a hoisting ring;

3. a drive member; 31. a first drive nut; 32. second drive nut

4. A backing ring;

100. an inner oil pipe; 200. an outer oil pipe.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

The embodiment of the present disclosure provides a moving device for an oil pipe in a shaft, as shown in fig. 1, the moving device includes an expansion cylinder 1, a mandrel 2 and a driving member 3. The coaxial cartridge of dabber 2 is in expanding tight section of thick bamboo 1, and the first end of dabber 2 is provided with limit baffle 21, and limit baffle 21 is located and expands outside tight section of thick bamboo 1, and limit baffle 21 offsets towards the face of dabber 2 and the first end of expanding tight section of thick bamboo 1, and the cover is equipped with driving piece 3 on the dabber 2, and driving piece 3 offsets with the second end of expanding tight section of thick bamboo 1.

Fig. 2 is a cross-sectional view of the expansion cylinder provided by the embodiment of the present disclosure, and in combination with fig. 2, a plurality of elongated slits 11 are provided on the expansion cylinder 1, each slit 11 is parallel to the axis of the expansion cylinder 1, an opening 10 of the slit 11 is located at a first end of the expansion cylinder 1, and the slit 11 extends from the opening 10 toward a second end of the expansion cylinder 1. The driver 3 is configured to drive the second end of the expansion cylinder 1 towards the limit stop 21.

When oil pipe moved in the countershaft through the mobile device that is used for oil pipe in the countershaft that this embodiment provided, can insert the interior oil pipe of countershaft 2 and an expansion section of thick bamboo 1 together, because this mobile device includes driving piece 3, so, can expand a section of thick bamboo 1 and remove towards limit baffle 21 through driving piece 3 drive, make an expansion section of thick bamboo 1 under limit baffle 21 and driving piece 3's clamping effect, take place the bulging deformation by cracking 11 department, make an expansion section of thick bamboo 1 can with the inner wall in the axle in close contact with, finally will expand a section of thick bamboo 1 and an axle in oil pipe and remove together through pulling dabber 2. Because dabber 2 and an expansion cylinder 1 all insert and establish in the interior oil pipe of axle, so occupation space has realized removing the interior oil pipe of axle in narrow and small space and not carrying out the clamping in the oil pipe outside the condition, has improved the manufacturability that the interior oil pipe of axle removed, has protected the interior oil pipe of axle.

The moving device for the oil pipe in the shaft provided by the embodiment is simple in structure, convenient to use and low in cost, and can operate in a narrow space, so that the stress of the oil pipe in the shaft is uniform, and the oil pipe in the shaft cannot be damaged. The requirement on the environment is not high, and the operability is strong.

It should be noted that, in order to ensure that the expansion cylinder 1 can expand and deform under force, a metal with certain toughness may be selected for the expansion cylinder 1. And, the opening 10 that cracks 11 is located the first end of the tight section of thick bamboo 1 that expands, can guarantee to expand tight section of thick bamboo 1 when receiving the drive of driving piece 3, expand tight section of thick bamboo 1 through the second end can be even transmit the first end of an effort to the tight section of thick bamboo 1 that expands for it is whole through cracking 11 that the tight section of thick bamboo 1 that expands takes place effective deformation. If the slit 11 is arranged at the second end of the expansion cylinder 1, when the expansion cylinder 1 is driven by the driving member 3, the second end of the expansion cylinder 1 is firstly deformed due to the slit 11, and the deformation of the whole expansion cylinder 1 cannot be effectively ensured.

Preferably, the expansion cylinder 1 may be a seamless steel pipe, thereby ensuring the structural strength of the expansion cylinder 1.

Fig. 3 is a left side view of fig. 2, and in conjunction with fig. 3, exemplarily, the number of the slits 11 may be 6, and 6 slits 11 are arranged at the peripheral wall of the expansion cylinder 1 at regular intervals in the circumferential direction of the expansion cylinder 1.

In above-mentioned implementation, 6 the setting of slotting 11 can guarantee that tight section of thick bamboo 1 that expands can in time take place to warp and produce the tight power of expanding when the atress, produces even extrusion to the interior oil pipe of countershaft.

Illustratively, each slit 11 has a length that is half the length of the expansion cylinder 1.

In the above implementation mode, the above arrangement can ensure that the expansion cylinder 1 can generate effective deformation and generate expansion force when stressed, and the oil pipe in the shaft is expanded.

Fig. 4 is a cross-sectional view of the mandrel provided in the embodiment of the present disclosure, and with reference to fig. 4, optionally, an external thread 20 is provided at a position of the outer circumferential wall of the mandrel 2 near the second end, the external thread 20 extends along the length direction of the mandrel 2, the driving member 3 is sleeved on the mandrel 2, and the driving member 3 is in threaded fit with the external thread 20.

In above-mentioned implementation, 3 moving direction of driving piece can be injectd in the setting of external screw thread 20, and the drive of effectual control driving piece 3 is simultaneously through the cooperation between driving piece 3 and the external screw thread 20 for driving piece 3 can firmly extrude tight section of thick bamboo 1 that expands, guarantees that tight section of thick bamboo 1 that expands takes place effective deformation.

Illustratively, the limit stops 21 are perpendicular to the mandrel 2, and the outer edges of the limit stops 21 all protrude from the outer peripheral wall of the mandrel 2.

In above-mentioned implementation, above set up can effectual assurance limit baffle 21 support the pressure to an expanding section of thick bamboo 1 for an expanding section of thick bamboo 1 can take place effective deformation under the drive of driving piece 3.

Illustratively, the limit stop 21 is in a shape of a circular disc, the axis of the mandrel 2 passes through the center of the limit stop 21, the outer edge of the limit stop 21 is flush with the outer edge of the first end of the mandrel 2 (see fig. 1), and the limit stop 21 is vertically welded on the first end of the mandrel 2.

In the above implementation manner, the above arrangement can enable the expansion cylinder 1 to uniformly extrude the limiting baffle 21, so that the limiting baffle 21 is prevented from being damaged or deformed due to stress and affecting normal use. Correspondingly, the expansion cylinder 1 can be uniformly expanded to better tightly abut against an oil pipe in the shaft.

Optionally, the central part of the outer peripheral wall of the mandrel 2 is coaxially provided with a flange 22, and the outer peripheral wall of the flange 22 is in sliding fit with the inner peripheral wall of the expansion cylinder 1.

In the above-mentioned implementation, flange 22 is used for supporting the tight section of thick bamboo 1 that expands, and when the tight section of thick bamboo 1 that expands under the extrusion of driving piece 3, the outer wall of the tight section of thick bamboo 1 that expands can only take place outside flexible deformation and can not inwards, further makes things convenient for tight section of thick bamboo 1 that expands to closely laminate with the interior oil pipe of axle like this.

Illustratively, the flange 22 is cylindrical so as to facilitate engagement with the inner wall of the expansion cylinder 1.

Optionally, the outer circumferential wall of the mandrel 2 is provided with two tangent planes 23, the two tangent planes 23 are arranged in parallel, and the two tangent planes 23 are located outside the expansion cylinder 1.

In the above-described embodiment, the two cut surfaces 23 are provided for clamping the mandrel 2 by means of a wrench tool when the drive element 3 is manually rotated, preventing the mandrel 2 from rotating along with the drive element 3.

Illustratively, two cut surfaces 23 and flanges 22 are located at opposite ends of the external thread 20.

In this way, the cutting surfaces can be prevented from interfering with the movement of the driving member 3 on the mandrel 2.

In addition, both cut surfaces 23 are located on the peripheral wall of the mandrel 2 near the second end and are located next to the external thread 20.

In the above implementation manner, the mandrel 2 can be conveniently clamped by the two tangent planes 23, so that the mandrel 2 is prevented from rotating.

Optionally, a lifting ring 25 for connecting the steel cable is inserted into the second end of the mandrel 2.

In the implementation mode, the lifting ring 25 is fixed through the threaded hole 24 in the mandrel 2, then the steel wire rope is fixed on the lifting ring 25, the mandrel 2 is conveniently pulled to move, and the mandrel 2 moves in the in-shaft oil pipe.

Illustratively, the eye 25 may be an eye screw. The lifting bolt is a standard part and is connected with the mandrel 2 through threads, a steel wire rope is connected in the lifting bolt, and the moving device and the oil pipe in the shaft are driven by the steel wire rope to move together in the shaft.

Referring again to fig. 1, optionally, the driving member 3 includes a first driving nut 31 and a second driving nut 32, the first driving nut 31 and the second driving nut 32 are both sleeved on the mandrel 2, and the first driving nut 31 and the second driving nut 32 are both in threaded fit with the external thread 20.

In the above-mentioned implementation, first drive nut 31 is used for compressing tightly the tight section of thick bamboo 1 that expands, second drive nut 32 can prevent that first drive nut 31 is not hard up, make interlocking between the two through first drive nut 31 and second drive nut 32, in order to keep the tight section of thick bamboo 1 that expands to exert pressure continuously to the interior oil pipe of countershaft, so, above setting can be effectively through driving piece 3 with tight section of thick bamboo 1 that expands presss from both sides tight extrusion deformation, can avoid this mobile device to take place to warp resilience at the tight section of thick bamboo 1 that expands in the during operation simultaneously, the tight power that expands that the tight section of thick bamboo 1 produced that makes to expand is invalid.

Illustratively, the first and

second drive nuts

31 and 32 are identical in construction and are standard nut members.

It will be appreciated that the drive member 3 may be of other configurations, for example, the piston rod may be driven by hydraulic means, one end of the piston rod abutting against one end of the expansion cylinder 1. This implementation is not limiting.

Optionally, the mandrel 2 is slidably sleeved with a backing ring 4, the backing ring 4 is located outside the expansion cylinder 1, one plate surface of the backing ring 4 abuts against the second end of the expansion cylinder 1, and the other plate surface of the backing ring 4 abuts against the driving member 3.

In above-mentioned implementation, backing ring 4 can prevent to expand and cause wearing and tearing between a tight section of thick bamboo 1 and the driving piece 3, also can increase simultaneously and expand the lifting surface area and the frictional force between a tight section of thick bamboo 1 and the driving piece 3, transmit the packing force of driving piece 3 for expanding tight section of thick bamboo 1 through backing ring 4 is effectual, improves the extrusion effect of driving piece 3 to an tight section of thick bamboo 1 that expands.

Fig. 5 is a cross-sectional view of a backing ring provided in an embodiment of the present disclosure, and with reference to fig. 5, for example, the backing ring 4 may be made of 35 # steel, a large gap is formed between an inner hole of the backing ring 4 and the mandrel 2, and an outer diameter of the backing ring 4 is slightly larger than an outer diameter of the expansion cylinder 1.

The operation of the in-shaft oil pipe moving device provided in this embodiment is briefly described as follows:

fig. 6 is a use state diagram of the moving device provided by the embodiment of the present disclosure, and with reference to fig. 6, when in use, one end of the moving device is inserted into the in-shaft oil pipe 100, one end of the expansion cylinder 1 is supported on the limiting baffle 21, and the other end of the expansion cylinder 1 is attached to the backing ring 4. Then, by applying a torque to the first driving nut 31, the expansion cylinder 1 is expanded and deformed under the pressure between the backing ring 4 and the limit baffle 21, and the slit 11 in the expansion cylinder 1 can satisfy the deformation amount of the expansion cylinder 1. Then, the second driving nut 32 is abutted against the first driving nut 31, so that the interlocking between the first driving nut 31 and the second driving nut 32 is realized, and the deformation and the rebound of the expansion cylinder 1 can be prevented. After the second driving nut 32 is locked, the hanging ring 25 is installed at the second end of the mandrel 2, the steel wire rope is passed through the hanging ring 25, and then the steel wire rope is used for traction, so that the in-mandrel oil pipe 100 and the moving device can move together, and finally the in-mandrel oil pipe 200 is separated. When the moving device moves the oil pipe 100 in the shaft, the oil pipe can be prevented from being damaged, and the operation in a narrow space is realized.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A moving device for an oil pipe in a shaft is characterized by comprising an expansion cylinder (1), a mandrel (2) and a driving piece (3);

the mandrel (2) is coaxially inserted into the expansion cylinder (1), a flange (22) is coaxially arranged in the middle of the outer peripheral wall of the mandrel (2), the outer peripheral wall of the flange (22) is in sliding fit with the inner peripheral wall of the expansion cylinder (1), a limit baffle (21) is arranged at the first end of the mandrel (2), the limit baffle (21) is positioned outside the expansion cylinder (1), the outer edge of the limit baffle (21) is flush with the outer edge of the first end of the expansion cylinder (1), the limit baffle (21) abuts against the first end of the expansion cylinder (1) towards the surface of the mandrel (2), the limit baffle (21) is perpendicular to the mandrel (2), the outer edge of the limit baffle (21) protrudes out of the outer peripheral wall of the mandrel (2), a driving part (3) is sleeved on the mandrel (2), and the driving part (3) abuts against the second end of the expansion cylinder (1);

a plurality of elongated slits (11) are formed in the expansion cylinder (1), each slit (11) is parallel to the axis of the expansion cylinder (1), the opening of each slit (11) is located at the first end of the expansion cylinder (1), each slit (11) extends from the opening (10) towards the second end of the expansion cylinder (1), and the outer peripheral wall of each flange (22) is in sliding fit with the inner peripheral wall of each slit (11) of the expansion cylinder (1);

the drive element (3) is configured to drive the second end of the expansion cylinder (1) to move towards the limit stop (21).

2. The displacement device according to claim 1, characterized in that the outer circumferential wall of the mandrel (2) is provided with an external thread (20) near the second end, the external thread (20) extends along the length direction of the mandrel (2), the driving member (3) is sleeved on the mandrel (2), and the driving member (3) is in threaded fit with the external thread (20).

3. The displacement device according to claim 2, characterized in that the drive member (3) comprises a first drive nut (31) and a second drive nut (32), the first drive nut (31) and the second drive nut (32) each being fitted over the mandrel (2), and the first drive nut (31) and the second drive nut (32) each being in threaded engagement with the external thread (20).

4. A displacement device according to any one of claims 1-3, characterized in that the length of each slit (11) is half the length of the expansion cylinder (1).

5. The moving device according to any one of claims 1-3, wherein the mandrel (2) is slidably sleeved with a backing ring (4), the backing ring (4) is located outside the tightening cylinder (1), one plate surface of the backing ring (4) abuts against the second end of the tightening cylinder (1), and the other plate surface of the backing ring (4) abuts against the driving member (3).

6. A displacement device according to any one of claims 1-3, characterized in that the mandrel (2) is provided with two cut surfaces (23) on its peripheral wall, the two cut surfaces (23) being arranged in parallel with respect to each other and the two cut surfaces (23) being located outside the expansion cylinder (1).

7. A traveller according to any of claims 1-3, characterised in that a hoist ring (25) for connecting a wire rope is inserted into the second end of the mandrel.

8. A traveller according to any one of claims 1-3, characteri sed in that the expansion cylinder (1) is a seamless steel tube.