CN216967920U

CN216967920U - Pipe cutting machine

Info

Publication number: CN216967920U
Application number: CN202220390674.7U
Authority: CN
Inventors: 赵志强; 裴凌健; 李玲; 裴嘉阳
Original assignee: Hefei Ha Gong Lun Ton Engineering Technology Co ltd
Current assignee: Hefei Ha Gong Lun Ton Engineering Technology Co ltd
Priority date: 2022-02-25
Filing date: 2022-02-25
Publication date: 2022-07-15
Anticipated expiration: 2032-02-25

Abstract

The utility model relates to pipeline cutting equipment, in particular to a pipe cutting machine.A frame vehicle is positioned on a well during pipe cutting, a swing feed shaft is rotatably arranged on the frame vehicle and has the freedom degree of swinging left and right around an axial center line, and the swing feed shaft also has the freedom degree of moving back and forth along the axial direction relative to the frame vehicle; the cutting rod seat is connected with the swinging feed shaft, the connecting pipe is positioned in the cutting rod seat and is rotatably connected with the cutting rod seat, and the connecting pipe has the freedom degree of swinging back and forth relative to the cutting rod seat; the bearing sleeve A is connected with the connecting pipe, the mounting plate A is rotatably connected with the bearing sleeve A, the cutting rod shaft is penetrated through the mounting plate A, the bearing sleeve A and the connecting pipe respectively, the cutting rod shaft has the freedom degree of swinging back and forth along the connecting pipe, the freedom degree of moving up and down along the axial direction and the freedom degree of horizontally rotating around the axial center line, and the cutting machine is mounted at the lower end of the cutting rod shaft. The cutter rod shaft with five degrees of freedom is lowered to the underground for pipe cutting, manual underground operation is replaced, working conditions are improved, and working efficiency is improved.

Description

Pipe cutting machine

Technical Field

The utility model relates to pipeline cutting equipment, in particular to a pipe cutting machine which is used for cutting the redundant and unused parts of various liner pipes in the manufacturing process of underground pipelines.

Background

At present, the redundant unused part of a liner pipe used in the manufacturing process of an underground pipeline is cut off by a worker holding a manual tool such as a cutter or a saber saw and the like to the underground. Workers are easily injured during the resection process; in addition, the underground working environment is severe, the working efficiency is low, and time and labor are wasted.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems existing in the manual cutting of the redundant and unnecessary parts of the liner pipe, the utility model aims to provide a pipe cutting machine.

The purpose of the utility model is realized by the following technical scheme:

the pipe cutting machine comprises a frame vehicle, a swing feed shaft, a cutting rod seat, a connecting pipe, a bearing sleeve A, a mounting plate A, a cutting rod shaft and a cutting machine, wherein the frame vehicle is positioned on a well during pipe cutting, the swing feed shaft is rotatably mounted on the frame vehicle and has the freedom degree of swinging left and right around an axial center line, and the swing feed shaft also has the freedom degree of moving back and forth along the axial direction relative to the frame vehicle; the cutting rod seat is connected with the swing feed shaft, the connecting pipe is positioned in the cutting rod seat, is rotatably connected with the cutting rod seat and has a degree of freedom of swinging back and forth relative to the cutting rod seat; the cutting machine comprises a bearing sleeve A, a connecting pipe, a mounting plate A, a cutter shaft and a cutter, wherein the bearing sleeve A is connected with the connecting pipe, the mounting plate A is rotatably connected with the bearing sleeve A, the cutter shaft is penetrated through the mounting plate A, the bearing sleeve A and the connecting pipe respectively, the cutter shaft has the freedom degree of swinging back and forth along with the connecting pipe, the freedom degree of moving up and down along the axial direction and the freedom degree of horizontally rotating around the axial center line, and the cutter is mounted at the lower end of the cutter shaft.

Wherein: the guide sleeve bearing seat is installed on the rack vehicle, the swing feed shaft is installed in the guide sleeve bearing seat in a rotating mode, a gear seat is arranged on the swing feed shaft, a gear A is installed on the gear seat in a rotating mode, a rack A meshed with the gear A is arranged on the swing feed shaft in the axial direction, and the rack A and the swing feed shaft are driven to move back and forth in the axial direction by inputting rotating torque to the gear A.

A strip-shaped groove is formed in the swinging feed shaft along the axial direction, the rack A is embedded in the strip-shaped groove, and the tooth crest height of the rack A is smaller than the outer diameter of the swinging feed shaft.

The swinging and feeding shaft is rotatably connected with the guide sleeve bearing seat through a guide sleeve bearing, and the swinging and feeding shaft is in clearance fit with the guide sleeve bearing seat to realize that the swinging and feeding shaft rotates left and right relative to the guide sleeve bearing seat and moves back and forth along the axial direction.

Bearing sleeves B are mounted on the outer surfaces of the left side and the right side or one side of the cutting rod seat, rotating shafts are arranged on the left side and the right side or one side of the connecting pipe, the rotating shafts are rotatably connected with the bearing sleeves B through front and back swing bearings, and the connecting pipe, the bearing sleeves A, the mounting plate A and the cutting rod shaft are driven to swing back and forth around the axial center line of the rotating shafts by inputting rotating torque to the rotating shafts.

A hollow shaft is fixedly connected to the mounting plate A, the hollow shaft is rotatably connected with a bearing sleeve A through a rotary bearing, and the cutter bar shaft penetrates through the hollow shaft; the mounting plate A is provided with an up-and-down moving worm and gear gearbox, the output end of the up-and-down moving worm and gear gearbox is connected with a gear B, a rack B meshed with the gear B is axially arranged on the cutter bar shaft, a rotating torque is transmitted to the gear B through the up-and-down moving worm and gear gearbox, the rack B and the cutter bar shaft are driven to axially move up and down through the meshing of the gear B and the rack B, and the up-and-down moving worm and gear gearbox drives the cutter bar shaft to horizontally rotate through horizontal rotation.

A strip-shaped groove is formed in the cutter bar shaft in the axial direction, the rack B is embedded in the strip-shaped groove, and the tooth crest height of the rack B is smaller than the outer diameter of the cutter bar shaft.

The bearing sleeve A is provided with a jackscrew, and the axial positioning of the hollow shaft and the cutter bar shaft is realized through the butting of the jackscrew and the outer surface of the hollow shaft after the cutter bar shaft horizontally rotates in place.

The cutting rod shaft is in a multi-section structure, the cutting rod shafts of two adjacent sections are connected through threads, and the cutting machine is installed at the lower end of the cutting rod shaft of the lowest section.

The rack vehicle comprises a push-pull rod, a rack and wheels, wherein the wheels are symmetrically arranged on the left side and the right side of the rack, one end of the push-pull rod is connected with the rack, and the other end of the push-pull rod is a push-pull end.

The utility model has the advantages and positive effects that:

the cutter rod shaft with five degrees of freedom is lowered to the underground for pipe cutting, manual underground operation is replaced, working conditions are improved, and working efficiency is improved.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a front view of the structure of the present invention;

FIG. 3 is a right side view of the structure of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is an enlarged view of a portion of FIG. 4 at C;

FIG. 6 is a top view of the structure of the present invention;

FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;

FIG. 8 is an enlarged view of a portion of FIG. 7 at E;

wherein: the device comprises a rack vehicle 1, a push-pull rod 2, a rack 3, wheels 4, a gear seat 5, a spanner 6, a guide sleeve bearing seat 7, a swinging and rotating feed shaft 8, a guide sleeve bearing 9, a rack A10, a gear A11, a cutting rod seat 12, a connecting pipe 13, a bearing sleeve A14, a mounting plate A15, a mounting plate B16, a cutting rod shaft 17, a worm and gear gearbox 18 for up-and-down movement, a gear B19, a rack B20, a slewing bearing 21, a worm and gear gearbox 22 for forward and backward swinging, a bearing sleeve B23, a forward and backward swinging bearing 24, a rotating shaft 25, a cutting machine 26, a hollow shaft 27 and a jackscrew 28.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, the present invention includes a rack vehicle 1, a swing feed shaft 8, a cutter bar seat 12, a connecting pipe 13, a bearing bush a14, a mounting plate a15, a cutter bar shaft 17 and a cutter 26, wherein the rack vehicle 1 is located on a well when cutting pipes, the swing feed shaft 8 is rotatably mounted on the rack vehicle 1 and has a degree of freedom of swinging left and right around an axial center line, and the swing feed shaft 8 also has a degree of freedom of moving back and forth along an axial direction relative to the rack vehicle 1; the cutting rod seat 12 is connected with the swing feed shaft 8, the connecting pipe 13 is positioned in the cutting rod seat 12, is rotatably connected with the cutting rod seat 12 and has the freedom degree of swinging back and forth relative to the cutting rod seat 12; the bearing sleeve A14 is connected with the connecting pipe 13, the mounting plate A15 is rotatably connected with the bearing sleeve A14, the cutter bar shaft 17 is respectively penetrated by the mounting plate A15, the bearing sleeve A14 and the connecting pipe 13, the cutter bar shaft 17 has the freedom degree of swinging back and forth along the connecting pipe 13, the freedom degree of moving up and down along the axial direction and the freedom degree of horizontally rotating around the axial center line, and the cutter 26 is mounted at the lower end of the cutter bar shaft 17.

The rack vehicle 1 of the embodiment comprises a push-pull rod 2, a rack 3 and wheels 4, wherein the wheels 4 are symmetrically arranged on the left side and the right side of the rack 3, so that the pipe cutting machine can move integrally; one end of the push-pull rod 2 is fixedly connected with the frame 3, and the other end is a push-pull end.

In the embodiment, two guide sleeve bearing seats 7 are fixedly connected to a frame 3, a swinging feed shaft 8 is rotatably mounted in the two guide sleeve bearing seats 7 through guide sleeve bearings 9, a gear seat 5 is arranged on the swinging feed shaft 8, the gear seat 5 is positioned between the two guide sleeve bearing seats 7, the swinging feed shaft 8 is penetrated through the gear seat 5, and the gear seat 5 is linked with the swinging feed shaft 8; rotate on the gear seat 5 and install gear A11, the strip groove has been seted up along the axial on the pendulum feed shaft 8, and rack A10 inlays in the strip groove to mesh mutually with gear A11, the addendum height of rack A10 is less than the external diameter of pendulum feed shaft 8, guarantees that pendulum feed shaft 8 when rotatory around axial centerline rack A10 does not scrape and bump guide pin bushing bearing 9. The rack A10 and the swing feed shaft 8 are driven to move back and forth along the axial direction by inputting the rotation torque to the gear A11, the rotation torque can be input to the gear A11 manually or through a gear shaft of the gear A11 driven by a motor, and in the embodiment, a worker rotates the gear shaft of the gear A11 through the wrench 6. The swing feed shaft 8 and the guide sleeve bearing 9 of the embodiment are in clearance fit, so that the swing feed shaft 8 can rotate left and right relative to the guide sleeve bearing seat 7 and can move back and forth along the axial direction.

Bearing sleeves B23 are mounted on the outer surfaces of the left side and the right side or one side of the cutting rod seat 12, a rotating shaft 25 is arranged on the left side and the right side or one side of the connecting pipe 13, the rotating shaft 25 is rotatably connected with the bearing sleeve B23 through a front-back swinging bearing 24, the connecting pipe 13, the bearing sleeve A14, the mounting plate A15 and the cutting rod shaft 17 are driven to swing back and forth around the axial center line of the rotating shaft 25 by inputting a rotating torque to the rotating shaft 25, and the rotating torque can be manually or electrically driven by inputting the rotating torque to the rotating shaft 25. The cutting rod seat 12 of the present embodiment is a square frame, the bearing sleeves B23 are symmetrically and fixedly connected to the outer surfaces of the left and right sides of the cutting rod seat 12, the connecting pipe 13 is a square pipe, the rotating shafts 25 are symmetrically arranged on the left and right sides of the connecting pipe 13, and the rotating shaft 25 on each side is rotatably connected to the bearing sleeve B23 on the same side through the front and rear swing bearings 24. In this embodiment, a front-back swing worm gear box 22 is fixedly connected to any side of the cutting rod seat 12, an output end of the front-back swing worm gear box 22 is connected to the same-side rotating shaft 25, or an output shaft of the front-back swing worm gear box 22 serves as the same-side rotating shaft 25, and an input end of the front-back swing worm gear box 22 can input a rotation torque manually or by driving a motor.

The upper end of the connecting pipe 13 is fixedly connected with a mounting plate B16, and a bearing sleeve A14 is fixedly connected to a mounting plate B16. The mounting plate A15 of the embodiment is located above the bearing sleeve 14, the mounting plate A15 is fixedly connected with the hollow shaft 27, the hollow shaft 27 is located inside the bearing sleeve A14 and is rotatably connected with the bearing sleeve A14 through the rotary bearing 21, and the cutter bar shaft 17 penetrates through the inside of the hollow shaft 27 and then penetrates through the connecting pipe 13; the mounting plate A15 is provided with an up-and-down moving worm gear gearbox 18, the output end of the up-and-down moving worm gear gearbox 18 is connected with a gear B19, a strip-shaped groove is axially formed in the cutter bar shaft 17, a rack B20 is embedded in the strip-shaped groove and meshed with a gear B19, and the tooth crest height of a rack B20 is smaller than the outer diameter of the cutter bar shaft 17. The rotating torque is transmitted to the gear B19 through the up-and-down moving worm gear gearbox 18, the gear B19 is meshed with the rack B20 to drive the rack B20 and the cutter bar shaft 17 to move up and down along the axial direction, and the worm gear gearbox 18 is moved up and down through horizontal rotation to drive the cutter bar shaft 17 to rotate horizontally. The input end of the worm gear gearbox 18 moving up and down can input the rotation torque manually or through the driving of a motor. The bearing bush a14 of the embodiment is provided with the jackscrew 28, and the cutter bar shaft 17 is horizontally rotated to a proper position and then axially positioned with the hollow shaft 27 and the cutter bar shaft 17 through the butting of the jackscrew 28 and the outer surface of the hollow shaft 27.

The cutter bar shaft 17 of the embodiment is multi-section, and the specific number of the sections can be determined according to the downhole depth; the cutter bar shafts 17 of two adjacent sections are connected through threads, and a cutter 26 is arranged at the lower end of the cutter bar shaft 17 of the lowest section. The cutting machine 26 of the present embodiment is a conventional one, and will not be described herein.

When the drilling tool is in work, the rack vehicle is moved to the wellhead, the number of the sections of the cutter rod shafts 17 is selected according to the well descending depth, and the cutter rod shafts are connected and lowered into a well. The cutting rod shaft 17 has five degrees of freedom, namely a forward and backward movement degree of freedom along with the swinging feeding shaft 8, a left and right swinging degree of freedom around the axial center line of the swinging feeding shaft 8, a forward and backward swinging degree of freedom around the axial center line of the rotating shaft 25 along with the connecting pipe 13, an upward and downward movement degree of freedom along the shaft and a horizontal rotation degree of freedom; the unnecessary and unused parts on the liner tube are cut off by the respective operation of five degrees of freedom of the cutter bar shaft 17 or the simultaneous operation of five degrees of freedom.

Claims

1. A pipe cutting machine is characterized in that: the pipe cutting machine comprises a frame vehicle (1), a swing feed shaft (8), a cutting rod seat (12), a connecting pipe (13), a bearing sleeve A (14), a mounting plate A (15), a cutting rod shaft (17) and a cutting machine (26), wherein the frame vehicle (1) is positioned on a well during pipe cutting, the swing feed shaft (8) is rotatably mounted on the frame vehicle (1) and has the freedom degree of left-right swinging around an axial center line, and the swing feed shaft (8) also has the freedom degree of front-back movement along the axial direction relative to the frame vehicle (1); the cutting rod seat (12) is connected with the swinging feed shaft (8), the connecting pipe (13) is positioned in the cutting rod seat (12), is rotatably connected with the cutting rod seat (12), and has the freedom degree of swinging back and forth relative to the cutting rod seat (12); the bearing sleeve A (14) is connected with the connecting pipe (13), the mounting plate A (15) is rotatably connected with the bearing sleeve A (14), the cutter rod shaft (17) is respectively penetrated by the mounting plate A (15), the bearing sleeve A (14) and the connecting pipe (13), the cutter rod shaft (17) has the freedom degree of swinging back and forth along the connecting pipe (13), the freedom degree of moving up and down along the axial direction and the freedom degree of horizontally revolving around the axial center line, and the cutter (26) is installed at the lower end of the cutter rod shaft (17).

2. The pipe cutter of claim 1, wherein: the guide sleeve bearing seat (7) is installed on the rack vehicle (1), the swinging feed shaft (8) is rotatably installed in the guide sleeve bearing seat (7), a gear seat (5) is arranged on the swinging feed shaft (8), a gear A (11) is rotatably installed on the gear seat (5), a rack A (10) meshed with the gear A (11) is axially arranged on the swinging feed shaft (8), and the rack A (10) and the swinging feed shaft (8) are driven to move back and forth along the axial direction by inputting a rotating torque to the gear A (11).

3. The pipe cutter of claim 2, wherein: a strip-shaped groove is formed in the swing feed shaft (8) in the axial direction, the rack A (10) is embedded in the strip-shaped groove, and the tooth crest height of the rack A (10) is smaller than the outer diameter of the swing feed shaft (8).

4. The pipe cutter of claim 1, wherein: the pendulum feed shaft (8) is rotatably connected with the guide sleeve bearing seat (7) through a guide sleeve bearing (9), and the pendulum feed shaft (8) is in clearance fit with the guide sleeve bearing (9) to realize that the pendulum feed shaft (8) rotates left and right relative to the guide sleeve bearing seat (7) and moves back and forth along the axial direction.

5. The pipe cutter of claim 1, wherein: bearing sleeves B (23) are mounted on the outer surfaces of the left side and the right side or one side of the cutting rod seat (12), rotating shafts (25) are arranged on the left side and the right side or one side of the connecting pipe (13), the rotating shafts (25) are rotatably connected with the bearing sleeves B (23) through front and back swing bearings (24), and the connecting pipe (13), the bearing sleeves A (14), the mounting plate A (15) and the cutting rod shaft (17) are driven to swing back and forth around the axial center line of the rotating shafts (25) by inputting rotating torque to the rotating shafts (25).

6. The pipe cutter of claim 1, wherein: a hollow shaft (27) is fixedly connected to the mounting plate A (15), the hollow shaft (27) is rotatably connected with the bearing sleeve A (14) through a rotary bearing (21), and the cutter bar shaft (17) penetrates through the hollow shaft (27); the mounting plate A (15) is provided with an up-and-down moving worm and gear gearbox (18), the output end of the up-and-down moving worm and gear gearbox (18) is connected with a gear B (19), a rack B (20) meshed with the gear B (19) is axially arranged on the cutter bar shaft (17), a rotating torque is transmitted to the gear B (19) through the up-and-down moving worm and gear gearbox (18), the rack B (20) and the cutter bar shaft (17) are driven to move up and down along the axial direction through meshing of the gear B (19) and the rack B (20), and the up-and-down moving worm and gear gearbox (18) drives the cutter bar shaft (17) to horizontally rotate through horizontal rotation.

7. The pipe cutter of claim 6, wherein: a strip-shaped groove is formed in the cutter bar shaft (17) in the axial direction, the rack B (20) is embedded in the strip-shaped groove, and the tooth crest height of the rack B (20) is smaller than the outer diameter of the cutter bar shaft (17).

8. The pipe cutter of claim 6, wherein: the bearing sleeve A (14) is provided with a jackscrew (28), and the cutter bar shaft (17) is horizontally rotated in place and then axially positioned with the hollow shaft (27) and the cutter bar shaft (17) through the butting of the jackscrew (28) and the outer surface of the hollow shaft (27).

9. The pipe cutter of claim 1, wherein: the cutter bar shafts (17) are in multiple sections, the cutter bar shafts (17) of two adjacent sections are connected through threads, and the cutter (26) is installed at the lower end of the cutter bar shaft (17) of the lowest section.

10. The pipe cutter of claim 1, wherein: the frame trolley (1) comprises a push-pull rod (2), a frame (3) and wheels (4), wherein the wheels (4) are symmetrically arranged on the left side and the right side of the frame (3), one end of the push-pull rod (2) is connected with the frame (3), and the other end of the push-pull rod is a push-pull end.