CN112223385B

CN112223385B - Rotary internal cutting device for waste pile pipe

Info

Publication number: CN112223385B
Application number: CN202011031776.1A
Authority: CN
Inventors: 任国柱; 王春海; 赵陆民; 王喆
Original assignee: North China Institute of Aerospace Engineering
Current assignee: North China Institute of Aerospace Engineering
Priority date: 2020-09-27
Filing date: 2020-09-27
Publication date: 2022-06-17
Anticipated expiration: 2040-09-27
Also published as: CN112223385A

Abstract

The invention discloses a rotary internal cutting device for a waste pile pipe, which comprises a transposition supporting central shaft, a first gear, a connecting sleeve, a cutting and feeding motor base, a feeding retainer ring, a feeding guide plate, a cutting driving assembly and an end cover, wherein the transposition supporting central shaft is arranged on the first gear; a feeding turntable is sleeved on the outer side of the feeding check ring, a second gear with the same axis is arranged on the upper end face of the feeding turntable, the second gear is meshed with a third gear on one side, the third gear is arranged on a power output shaft of a cutting feeding motor, and the cutting feeding motor is arranged on a cutting feeding motor base; the feeding turntable is provided with a feeding guide hole, the feeding guide plate is provided with two sliding holes in a straight line, the two sliding holes are connected with a feeding guide block in a sliding mode, the bottom surfaces of the two feeding guide blocks are connected with a pile pipe cutting device, a guide post is arranged at the top of one feeding guide block, and the guide post extends into the feeding guide hole. The invention has the advantages of compact structure, convenient operation, high cutting efficiency, no environmental damage and strong practicability.

Description

Rotary internal cutting device for waste pile pipe

Technical Field

The invention relates to the field of ocean engineering, in particular to a rotary internal cutting device for waste pile pipes.

Background

The abandoned offshore drilling well pipe and the supporting riser of the drilling platform thereof are required to be removed according to regulations, and the residual pile pipe and the like on the seabed are cut to be below 4m of the seabed surface, and the traditional treatment method comprises the following steps: (1) the method is completely abandoned, and has the problems that offshore pipe abandonment can influence the offshore traffic safety; (2) the method adopts a manual method to cut along the outer wall of the abandoned pipe, and has the problems that the dismantling efficiency is low, the complete cutting cannot be realized, the residue is generally left under the water, and the influence on the marine traffic safety is also generated; (3) the blasting method is adopted for removal, and the problems of influence on ecology and environmental pollution exist.

Disclosure of Invention

The invention aims to provide a rotary internal cutting device for a waste pile pipe, which solves the problems that the pile pipe blasting demolition in the background technology pollutes the environment, the traffic safety is influenced, and the manual demolition efficiency is low.

In order to solve the technical problem, the invention adopts the following technical scheme:

the invention relates to a rotary internal cutting device for a waste pile pipe, which comprises a transposition supporting central shaft, wherein a first gear, a connecting sleeve, a cutting and feeding motor base, a feeding check ring and a feeding guide plate which are connected together through bolts are sleeved on the transposition supporting central shaft; a cutting driving assembly is arranged at the top end of the transposition supporting central shaft and is in power connection with the first gear; an end cover is arranged at the bottom end of the indexing support central shaft and abuts against the feeding guide plate;

a rotatable feeding turntable is sleeved on the outer side of the feeding check ring, a second gear which is coaxial with the axis is arranged on the upper end face of the feeding turntable, the second gear is meshed with a third gear on one side, the third gear is arranged on a power output shaft of a cutting feeding motor, and the cutting feeding motor is arranged on a cutting feeding motor base;

it is provided with the curved guiding hole that feeds to feed on the carousel, it is the straight line and is provided with two slide openings on the deflector to feed, two equal sliding connection has the feed guide block in the slide opening, two the bottom surface that feeds the guide block all is connected with stake pipe cutting device, two the top surface that feeds the guide block all supports on feeding the carousel, one of them the top that feeds the guide block is provided with the guide post, the guide post extends to feed in the guide opening.

Further, the pile tube cutting device comprises a U-shaped connecting frame, the top of the vertical portion of the U-shaped connecting frame is connected with the corresponding feeding guide block, a water knife seat is arranged at the bottom of the U-shaped connecting frame, and a water knife is arranged on the water knife seat.

Furthermore, the water knife holder is provided with an anti-collision wheel for preventing the water knife from contacting and impacting the inner wall of the pile pipe.

Furthermore, a plurality of adjusting hole positions for adjusting the installation position of the water knife seat are arranged at the bottom of the U-shaped connecting frame.

Furthermore, the cutting driving assembly comprises a driving base and a shaft seat, a fourth gear and a cutting rotating motor for driving the fourth gear to rotate are arranged on the driving base, the fourth gear is meshed with the first gear, and the transposition supporting central shaft is connected to the bottom of the driving base through the shaft seat.

Further, the feeding guide block is T-shaped.

Compared with the prior art, the invention has the beneficial technical effects that:

according to the rotary internal cutting device for the waste pile pipe, the radial feeding of the pile pipe cutting device can be completed through the cutting feeding mechanism consisting of the cutting feeding motor, the meshed second gear and third gear, the feeding turntable, the feeding guide block and the feeding guide plate, so that the cutting part of the pile pipe cutting device is close to the inner wall of the pile pipe, and the completion of cutting work is facilitated; the cutting driving assembly drives the feeding guide plate to rotate through the first gear, the connecting sleeve, the cutting feeding motor base and the feeding check ring, and then drives the pile pipe cutting device to complete 360-degree cutting of the pile pipe through the guide block; the invention has the advantages of compact structure, convenient operation, high cutting efficiency, no environmental damage and strong practicability.

Drawings

The invention is further illustrated in the following description with reference to the drawings.

FIG. 1 is a schematic structural view of a rotary internal cutting device for waste pile pipes according to the present invention;

FIG. 2 is a schematic view of the connection between the indexing support center shaft and the shaft seat according to the present invention;

FIG. 3 is a schematic cross-sectional view of the rotary internal cutting device for waste pile pipe according to the present invention;

FIG. 4 is a schematic view of the connection of the feed turntable and the first gear of the present invention;

FIG. 5 is a schematic view of the cutting feed motor mount of the present invention;

FIG. 6 is a schematic view of the feed guide plate of the present invention;

FIG. 7 is a schematic view of the feed guide block and guide post of the present invention;

fig. 8 is a schematic structural diagram of the pile tube cutting device.

Description of the reference numerals: 1. a first gear; 2. connecting sleeves; 3. cutting a feeding motor base; 4. a feed retainer ring; 5. a feed guide plate; 501. a slide hole; 6. a cutting drive assembly; 601. a drive base; 602. a fourth gear; 603. cutting the rotating motor; 604. a shaft seat; 7. an end cap; 8. a feed turntable; 801. a feed guide hole; 9. a second gear; 10. a third gear; 11. a cutting feed motor; 12. a feed guide block; 1201. a guide post; 13. a pile tube cutting device; 1301. a U-shaped connecting frame; 1302. a water knife holder; 1303. water jet; 1304. adjusting hole positions; 14. an indexing support central shaft; 15. anticollision wheel.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and the detailed description.

As shown in fig. 1 to 7, the present embodiment discloses a rotary internal cutting device for a waste pile pipe, which includes an indexing support central shaft 14, and a first gear 1, a connecting sleeve 2, a cutting and feeding motor base 3, a feeding check ring 4 and a feeding guide plate 5 which are connected together through bolts are sleeved on the indexing support central shaft 14. Specifically, the first gear 1 is connected to the upper end of the connecting sleeve 2 by a bolt. The connecting sleeve 2 and the cutting feed motor base 3 are connected to the upper end face of the feed check ring 4 through bolts. The feed guide plate 5 is bolted to the lower end face of the feed check ring 4. An end cover 7 is arranged at the bottom end of the indexing support central shaft 14, the outer circular wall of the end cover 7 is connected to the bottom end of the indexing support central shaft 14 through a bolt, and the upper end face of the end cover 7 abuts against the feeding guide plate 5 and is used for limiting the guide plate 5.

The top end of the indexing support central shaft 14 is provided with a cutting driving assembly 6, the cutting driving assembly 6 is in power connection with the first gear 1, in this embodiment, the cutting driving assembly 6 includes a driving base 601 and a shaft seat 604, a fourth gear 602 and a cutting rotating motor 603 for driving the fourth gear 602 to rotate are arranged on the driving base 601, the fourth gear 602 is engaged with the first gear 1, the indexing support central shaft 14 is connected to the shaft seat 604 through a bolt, and the shaft seat 604 is connected to the bottom of the driving base 601 through a bolt. In order to facilitate the integral rotation of the first gear 1, the connecting sleeve 2, the cutting and feeding motor base 3, the feeding check ring 4 and the feeding guide plate 5, the first gear 1 and the feeding check ring 4 are rotatably connected to the indexing support central shaft 14 through bearings.

The outer side of the feeding retainer ring 4 is sleeved with a rotatable feeding turntable 8, the upper end face of the feeding turntable 8 is connected with a second gear 9 with the same axis through a bolt, the second gear 9 is meshed with a third gear 10 on one side, the third gear 10 is installed on a power output shaft of a cutting feeding motor 11, and the cutting feeding motor 11 is installed on a cutting feeding motor base 3.

As shown in fig. 4 and 6, an arc-shaped feeding guide hole 801 is formed in the feeding turntable 8, two sliding holes 501 are linearly formed in the feeding guide plate 5, feeding guide blocks 12 are slidably connected in the two sliding holes 501, the feeding guide blocks 12 are T-shaped, the bottom surfaces of the two feeding guide blocks 12 are connected with the pile pipe cutting device 13, the top surfaces of the two feeding guide blocks 12 abut against the feeding turntable 8, a guide post 1201 is integrally formed on the top of one of the feeding guide blocks 12, and the guide post 1201 extends into the feeding guide hole 801.

As shown in fig. 8, the pile tube cutting device 13 includes a U-shaped connecting frame 1301, the top of the vertical portion of the U-shaped connecting frame 1301 is connected to the corresponding feed guide block 12, a water jet cutter holder 1302 is disposed at the bottom of the U-shaped connecting frame 1301, and a water jet cutter 1303 is disposed on the water jet cutter holder 1302.

In order to prevent the water jet from contacting and impacting the inner wall of the pile pipe, the water jet seat 1302 is provided with a collision prevention wheel 15 for preventing the water jet from contacting and impacting the inner wall of the pile pipe.

In this embodiment, a plurality of adjusting holes 1304 for adjusting the installation position of the water knife seat 1302 are disposed at the bottom of the U-shaped connecting frame 1301. The water knife base 1302 is connected to one of the adjusting water knife bases 1302 through a bolt.

The action process of the invention is as follows:

the cutting feed motor 11 transmits power to the feed turntable 8 through the meshed third gear 10 and the meshed second gear 9, the guide post 1201 is stirred through the feed guide hole 801 to act while the feed turntable 8 rotates, the guide post 1201 drives the feed guide block 12 to transversely slide in the slide hole 501, and therefore radial feed of the pile pipe cutting device 13 is completed, and the cutting part of the pile pipe cutting device 13 is close to the inner wall of a pile pipe due to radial movement of the pile pipe cutting device 13, and completion of cutting work is facilitated. In this embodiment, the pile tube cutting device 13 is water-cutting.

After the water jet 903 of the pile pipe cutting device 13 is fed in the radial direction, the cutting rotating motor 603 drives the connecting sleeve 2 to rotate through the fourth gear 602 and the first gear 1 which are meshed with each other, the connecting sleeve 2 drives the feeding guide plate 5 to rotate through the cutting feeding motor base 3 and the feeding retainer ring 4, and then the water jet 903 is driven by the guide block 12 to complete 360-degree cutting of the pile pipe. It should be noted that the cutting rotating motor 603 is automatically controlled by the controller, and when the required cutting angle is smaller than 360 °, the rotating cutting angle can be changed by setting parameters of the control system.

When the diameter of the pile pipe is larger, the requirement of cutting the pile pipe cannot be met by rotating the feeding turntable 8, and the water knife seat 1302 can move outwards by adjusting the installation positions of the water knife seat 1302 and the adjusting hole position 1304, namely the requirement of cutting the pile pipe with a larger pipe diameter is met.

The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.

Claims

1. A rotary internal cutting device for waste pile pipes is characterized by comprising an indexing support central shaft (14), wherein a first gear (1), a connecting sleeve (2), a cutting and feeding motor base (3), a feeding check ring (4) and a feeding guide plate (5) which are connected together through bolts are sleeved on the indexing support central shaft (14); a cutting driving assembly (6) is arranged at the top end of the indexing support central shaft (14), and the cutting driving assembly (6) is in power connection with the first gear (1); an end cover (7) is arranged at the bottom end of the indexing support central shaft (14), and the end cover (7) abuts against the feeding guide plate (5);

a rotatable feeding turntable (8) is sleeved on the outer side of the feeding retainer ring (4), a second gear (9) with the same axis is arranged on the upper end face of the feeding turntable (8), the second gear (9) is meshed with a third gear (10) on one side, the third gear (10) is installed on a power output shaft of a cutting feeding motor (11), and the cutting feeding motor (11) is installed on the cutting feeding motor base (3);

an arc-shaped feeding guide hole (801) is formed in the feeding turntable (8), two sliding holes (501) are linearly formed in the feeding guide plate (5), feeding guide blocks (12) are connected in the two sliding holes (501) in a sliding mode, the bottom surfaces of the two feeding guide blocks (12) are connected with a pile pipe cutting device (13), the top surfaces of the two feeding guide blocks (12) abut against the feeding turntable (8), a guide column (1201) is arranged at the top of one feeding guide block (12), and the guide column (1201) extends into the feeding guide hole (801);

the distance from one end of the feeding guide hole to the center of the feeding turntable is greater than the distance from the other end of the feeding guide hole to the center of the feeding turntable;

the pile tube cutting device (13) comprises a U-shaped connecting frame (1301), the tops of the vertical parts of the U-shaped connecting frame (1301) are connected with the corresponding feeding guide blocks (12), a water knife seat (1302) is arranged at the bottom of the U-shaped connecting frame (1301), and a water knife (1303) is arranged on the water knife seat (1302);

the water knife holder (1302) is provided with an anti-collision wheel (15) for preventing the water knife from contacting and colliding the inner wall of the pile pipe;

the bottom of the U-shaped connecting frame (1301) is provided with a plurality of adjusting hole positions (1304) for adjusting the installation position of the water knife holder (1302).

2. The rotary internal cutting device for waste pile tube according to claim 1, wherein: the cutting driving assembly (6) comprises a driving base (601) and a shaft seat (604), a fourth gear (602) and a cutting rotating motor (603) for driving the fourth gear (602) to rotate are arranged on the driving base (601), the fourth gear (602) is meshed with the first gear (1), and the indexing support central shaft (14) is connected to the bottom of the driving base (601) through the shaft seat (604).

3. The rotary internal cutting device for waste pile tube of claim 1, wherein: the feeding guide block (12) is T-shaped.