CN220407250U

CN220407250U - Cutting device for quick maintenance of gas pipeline

Info

Publication number: CN220407250U
Application number: CN202321775789.9U
Authority: CN
Inventors: 黄小凡
Original assignee: Xinyu Gas Co ltd
Current assignee: Xinyu Gas Co ltd
Priority date: 2023-07-07
Filing date: 2023-07-07
Publication date: 2024-01-30
Anticipated expiration: 2033-07-07

Abstract

The utility model relates to the technical field of gas pipeline cutting, in particular to a cutting device for quickly maintaining a gas pipeline. The cutting device comprises a mounting bottom plate and an inner and outer layer cutting mechanism which is arranged on the mounting bottom plate in a sliding manner, and the inner and outer layer cutting mechanism is used for cutting off the inner and outer layers of the gas corrugated pipe; the inner layer and outer layer cutting mechanism comprises a ring cutting piece, a first rotating handle and a second rotating handle, wherein the first rotating handle and the second rotating handle are hinged with each other, the first rotating handle and the second rotating handle are used for being hinged and spliced on the surface of the gas corrugated pipe and rotating along a cutting section, the ring cutting piece is located on the first rotating handle, and the ring cutting piece is used for carrying out ring cutting on the inner layer and the outer layer of the gas corrugated pipe. According to the utility model, the leaked gas corrugated pipe is cut, and the second rotating handle is gripped and rotated to drive the cutting wheel on the first rotating handle to cut off the gas corrugated pipe, so that the operation is simple, the work load of the wrist of a maintenance worker is reduced, the cutting efficiency is improved, and the maintenance process is accelerated.

Description

Cutting device for quick maintenance of gas pipeline

Technical Field

The utility model relates to the technical field of gas pipeline cutting, in particular to a cutting device for quickly maintaining a gas pipeline.

Background

Natural gas is used as a clean energy source by more and more people, and is particularly used as a main cooking fuel in restaurant and hotel places.

When the existing gas corrugated pipe leaked in restaurant and other restaurant is subjected to quick repair, a maintenance worker firstly performs circular cutting and peeling on the PVC flame-retardant outer layer at the cutting position of the gas corrugated pipe, exposes the corrosion-resistant metal inner layer of the gas corrugated pipe, then fixes the handheld pipeline cutter on the metal inner layer corrugated structure of the gas corrugated pipe, enables the cutting part of the handheld pipeline cutter to tightly press against the metal inner layer of the gas corrugated pipe, and then grips the handheld pipeline cutter by one hand of the maintenance worker, and performs circular cutting on the metal inner layer of the gas corrugated pipe by rotating the handheld pipeline cutter for many times, so that the metal inner layer of the gas corrugated pipe is cut off, after cutting is finished, the waveform structure at the metal inner layer cut of the gas corrugated pipe is subjected to wave beating through a die, so that the metal inner layer at the cut of the gas corrugated pipe forms a waveform interface, and a gas joint is installed on the waveform interface, so that the cutting of the leaked gas corrugated pipe and the installation work of a new gas joint are finished.

However, the inventor believes that when the inner and outer layers of the leaked gas corrugated pipe are cut off, different cutting tools are required to cut off the inner and outer layers of the gas corrugated pipe, and when the hand-held pipeline cutter is used for cutting off the metal inner layer of the gas corrugated pipe, the gas pipe body and the hand-held pipeline cutter are not stable in a suspended state, and meanwhile, the hand-held pipeline cutter is required to be rotated for many times to cut off the metal inner layer of the gas corrugated pipe, so that the whole cutting process is complex in operation, the burden of maintaining the wrist of a worker is increased, and the whole quick repair process is influenced.

Therefore, there is a need to provide a device for improving the above problems and shortening the maintenance time to accelerate the maintenance process.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the cutting device for quickly maintaining the gas pipeline, which can directly cut off the inner layer and the outer layer of the gas corrugated pipe, reduce the use of cutting tools, reduce the operation burden of maintenance workers, straighten the bending part of the gas corrugated pipe and clean the greasy dirt layer on the PVC flame-retardant outer layer of the gas corrugated pipe when the inner layer and the outer layer of the gas corrugated pipe are cut off, has simple operation and strong practicability, shortens the time required for maintenance and quickens the maintenance process.

The technical scheme adopted by the utility model is as follows: the cutting device for the rapid maintenance of the gas pipeline comprises a mounting bottom plate and an inner layer and outer layer cutting mechanism which is arranged on the mounting bottom plate in a sliding manner, wherein the inner layer and outer layer cutting mechanism is used for cutting off the inner layer and the outer layer of the gas corrugated pipe;

the inner layer and outer layer cutting mechanism comprises a ring cutting piece, a first rotating handle and a second rotating handle, wherein the first rotating handle and the second rotating handle are hinged to each other, the first rotating handle and the second rotating handle are used for being hinged to each other on the surface of the gas corrugated pipe and rotating along a cutting section, the ring cutting piece is located on the first rotating handle, and the ring cutting piece is used for carrying out ring cutting on the inner layer and the outer layer of the gas corrugated pipe.

Preferably, the circular cutting piece comprises a cutting wheel and an adjusting component for adjusting the height of the cutting wheel, and the cutting end of the cutting wheel is pressed against the outer surface of the gas corrugated pipe and performs circular cutting on the gas corrugated pipe.

Preferably, the adjusting component comprises a fixing sheet, an adjusting spring, a cutting frame, a thread adjusting rod and a limiting block, wherein the fixing sheet is arranged on the front side and the rear side of the middle part of the first rotating handle, the adjusting spring is connected to the lower surface of the fixing sheet, the lower end of the adjusting spring is connected with the cutting frame, two sliding rods on the upper part of the cutting frame are positioned in the adjusting spring and penetrate through the fixing sheet in a sliding manner, thread adjusting holes and a mounting frame are respectively formed in the middle part and the bottom of the cutting frame, the cutting wheel is arranged in the mounting frame, the thread adjusting rod is positioned in a threaded hole formed in the middle part of the first rotating handle, the lower end of the thread adjusting rod is positioned in a thread adjusting hole in the middle part of the cutting frame, and the limiting block is arranged on the lower part of the thread adjusting rod.

Preferably, the first rotating handle is provided with a first attaching part, the second rotating handle is provided with a second attaching part, the first attaching part and the second attaching part are attached to the outer surface of the gas corrugated pipe, and the first attaching part and the second attaching part are mutually spliced.

Preferably, the first attaching portion and the second attaching portion are respectively provided with a first semi-arc scraping ring and a second semi-arc scraping ring, and the first semi-arc scraping ring and the second semi-arc scraping ring are in head-tail correspondence.

Preferably, the second attaching portion is provided with a sliding frame, and the sliding frame is disposed on the mounting base plate.

Preferably, the first attaching portion is provided with a first rotating groove along the rotating direction of the first rotating handle, the second attaching portion is provided with a second rotating groove along the rotating direction of the second rotating handle, the first rotating groove corresponds to the second rotating groove in a head-to-tail mode, a first rotating sliding block and a second rotating sliding block are respectively arranged at the rotating positions of the first rotating handle and the second rotating handle, and the first rotating sliding block and the second rotating sliding block are respectively located in the first rotating groove and the second rotating groove.

Preferably, the first rotating handle and the second rotating handle are respectively provided with a first magnetic attraction block and a first adsorption groove, and the first attaching part and the second attaching part are respectively provided with a plurality of second adsorption grooves and a plurality of second magnetic attraction blocks.

Preferably, the device further comprises a fixed adjusting mechanism arranged at the bottom of the mounting bottom plate, and the fixed adjusting mechanism is used for adjusting the position and the height of the mounting bottom plate.

Preferably, the fixed adjustment mechanism comprises a fixed seat, an adjusting rod, an adjusting ring and a sucker, wherein the fixed seat is arranged at the bottom of the mounting bottom plate, the fixed seat is hinged with the adjusting rod, and the middle part and the lower end part of the adjusting rod are respectively provided with the adjusting ring and the sucker.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the first attaching part and the second attaching part are mutually spliced to fix the gas corrugated pipe, so that the gas corrugated pipe is prevented from shaking during cutting, and the cutting stability is ensured.

2. According to the utility model, the leaked gas corrugated pipe is cut, and the second rotating handle is gripped and rotated to drive the cutting wheel on the first rotating handle to cut off the gas corrugated pipe, so that the operation is simple, the workload on the wrist of a maintenance worker during cutting is reduced, the cutting efficiency is improved, and the maintenance process is accelerated.

3. According to the utility model, the first attaching part and the second attaching part which are mutually spliced can be driven by the sliding frame to straighten the bending part of the fixed gas corrugated pipe, and the first semicircular arc scraping ring and the second semicircular arc scraping ring which are respectively arranged on the first attaching part and the second attaching part are combined to form the cleaning scraping ring to scrape the greasy dirt layer on the gas corrugated pipe during straightening, so that the influence of the greasy dirt on cutting work is reduced, the erosion of the greasy dirt on the outer layer of the gas corrugated pipe is reduced, and the service life of the gas corrugated pipe is prolonged.

4. When the utility model cuts the leaked gas corrugated pipe, the distance between the cutting device for quickly maintaining the gas pipeline and the wall can be adjusted through the fixed adjusting mechanism, and the cutting device is fixed on the wall, so that the leaked gas corrugated pipe can be cut only by disassembling the joint at one end of the gas corrugated pipe, the disassembling step is simplified, the maintenance time is shortened, and the maintenance process is accelerated.

Drawings

FIG. 1 is a schematic perspective view of a first embodiment of the present utility model;

FIG. 2 is a schematic perspective view of a ring cut according to the present utility model;

FIG. 3 is a schematic view of the structure of the cutting frame of the present utility model;

FIG. 4 is a schematic view of a three-dimensional mechanism of a first rotary handle and a second rotary handle according to the present utility model;

FIG. 5 is an exploded view of a portion of the structure of the present utility model;

FIG. 6 is a schematic view of a second perspective structure of the present utility model;

fig. 7 is a schematic view of a part of the structure of the fixed adjusting mechanism of the present utility model.

Illustration of:

1. a mounting base plate; 101. a chute; 102. a protective pad; 103. a mounting groove; 2. a first rotary handle; 201. a threaded hole; 202. a first magnetic block; 203. a first rotating slider; 3. a second rotary handle; 301. an anti-skid sleeve; 302. a first adsorption groove; 303. a second rotating slider; 401. a fixing piece; 402. an adjusting spring; 403. a cutting frame; 4031. a slide bar; 4032. a threaded adjustment hole; 4033. a mounting frame; 404. a cutting wheel; 405. a threaded adjusting rod; 406. a limiting block; 5. a first bonding part; 501. a first rotating groove; 502. a second adsorption groove; 503. a first semi-circular arc-shaped scraper ring; 6. a second attaching part; 601. a second rotating groove; 602. a second magnetic block; 603. a second semi-arcuate scraper ring; 7. a carriage; 801. a fixing seat; 802. an adjusting rod; 803. an adjusting ring; 804. and a sucking disc.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 7, the cutting device for quick maintenance of a gas pipeline according to the present embodiment includes a mounting base plate 1 and an inner and outer layer cutting mechanism slidably disposed on the mounting base plate 1, where the inner and outer layer cutting mechanism is used for cutting inner and outer layers of a gas corrugated pipe;

the inner and outer layer cutting mechanism comprises a ring cutting piece, a first rotating handle 2 and a second rotating handle 3, wherein the first rotating handle 2 and the second rotating handle 3 are hinged with each other, the first rotating handle 2 and the second rotating handle 3 are used for being hinged and spliced on the surface of the gas corrugated pipe and rotating along a cutting section, the ring cutting piece is positioned on the first rotating handle 2, and the ring cutting piece is used for ring cutting of the inner and outer layers of the gas corrugated pipe.

In specific implementation, the second rotating handle 3 is rotated to drive the circular cutting piece on the first handle to rotate around the gas corrugated pipe, so that the inner layer and the outer layer of the gas corrugated pipe are cut off.

In particular, the second rotary handle 3 may be provided with an anti-slip cover 301 to improve the gripping force of the second rotary handle 3 when the second rotary handle 3 is rotated.

In this embodiment, the ring cutting member includes a cutting wheel 404 and an adjusting component for adjusting the height of the cutting wheel 404, where the cutting end of the cutting wheel 404 is pressed against the outer surface of the gas bellows and performs ring cutting on the gas bellows.

In specific implementation, the adjusting component is used for adjusting the distance between the cutting wheel 404 and the inner and outer layers of the gas corrugated pipe, so that the cutting part of the cutting wheel 404 is pressed against the outer surfaces of the inner and outer layers of the gas corrugated pipe.

In this embodiment, the adjusting component includes stationary blade 401, adjusting spring 402, cutting frame 403, screw thread regulation pole 405 and stopper 406, the stationary blade 401 is installed the front and back side at first rotation handle 2 middle part, adjusting spring 402 connects the lower surface at the stationary blade 401, adjusting spring 402 lower extreme is connected with cutting frame 403, just two slide bars 4031 on cutting frame 403 upper portion are located adjusting spring 402 and slide and pass stationary blade 401, the middle part and the bottom of cutting frame 403 are provided with screw thread regulation hole 4032 and mounting bracket 4033 respectively, just cutting wheel 404 installs in mounting bracket 4033, screw thread regulation pole 405 is located screw thread 201 that first rotation handle 2 middle part set up, just the lower extreme of screw thread regulation pole 405 is located the screw thread regulation hole 4032 at cutting frame 403 middle part, the lower part of screw thread regulation pole 405 is provided with stopper 406.

In specific implementation, the threaded adjusting rod 405 in the threaded adjusting hole 4032 in the middle of the adjusting cutting frame 403 is lifted, so that the cutting frame 403 is controlled to lift or descend, the length of the adjusting spring 402 is compressed or released, the lower end of the threaded adjusting rod 405 is limited by the limiting block 406 while the adjusting is performed, and the threaded adjusting rod 405 is prevented from being separated from the cutting frame 403 in the adjusting process.

In this embodiment, be provided with first laminating portion 5 on the first rotation handle 2, be provided with second laminating portion 6 on the second rotation handle 3, first laminating portion 5 with second laminating portion 6 all laminate with the gas bellows surface mutually, just first laminating portion 5 with second laminating portion 6 amalgamates each other.

During specific implementation, firstly, the gas corrugated pipe is placed on the inner wall of the second attaching part 6 for preliminary fixing, then the first attaching part 5 is driven to rotate by rotating the first rotating handle 2, so that the inner wall of the first attaching part 5 is attached to the gas corrugated pipe, the gas corrugated pipe is completely fixed through the first attaching part 5 and the second attaching part 6 which are spliced together, and the gas corrugated pipe is guaranteed to be in a stable state in the cutting process.

In this embodiment, the first attaching portion 5 and the second attaching portion 6 are respectively provided with a first semi-circular arc scraping ring 503 and a second semi-circular arc scraping ring 603, and the first semi-circular arc scraping ring 503 and the second semi-circular arc scraping ring 603 are in head-tail correspondence.

During specific implementation, the first semicircular arc scraping ring 503 and the second semicircular arc scraping ring 603 are spliced end to form a cleaning scraping ring, and the cleaning scraping ring is used for scraping an oil stain layer on the flame-retardant outer layer of the gas corrugated pipe PVC, so that the cleanness of the gas corrugated pipe body is ensured, the corrosion of oil stains to the gas corrugated pipe is reduced, and the service life of the gas corrugated pipe is prolonged.

In this embodiment, a sliding frame 7 is disposed on the second attaching portion 6, and the sliding frame 7 is disposed on the mounting base plate 1.

During specific implementation, the second rotating handle 3 is gripped to drive the sliding frame 7 and related parts on the sliding frame 7 to move transversely in the sliding groove 101 on the mounting bottom plate 1, the bending part of the gas corrugated pipe is straightened through the first attaching part 5 and the second attaching part 6 spliced on the outer surface of the gas corrugated pipe while moving transversely, the cleaning scraping ring formed by splicing the first semicircular arc scraping ring 503 and the second semicircular arc scraping ring 603 is used for scraping the oil stain layer on the surface of the gas corrugated pipe while straightening the gas corrugated pipe, and meanwhile the sliding adjusting position is carried out on the cutting wheel 404 through the sliding frame 7, so that the cutting position of the cutting wheel 404 is adjusted.

In this embodiment, a first rotating groove 501 is formed in the first attaching portion 5 along the rotating direction of the first rotating handle 2, a second rotating groove 601 is formed in the second attaching portion 6 along the rotating direction of the second rotating handle 3, the first rotating groove 501 and the second rotating groove 601 are corresponding to each other from head to tail, a first rotating slider 203 and a second rotating slider 303 are respectively disposed at the rotating positions of the first rotating handle 2 and the second rotating handle 3, and the first rotating slider 203 and the second rotating slider 303 are respectively located in the first rotating groove 501 and the second rotating groove 601.

The first rotating groove 501 and the second rotating groove 601 are spliced end to form a rotating groove, the first rotating sliding block 203 and the second rotating sliding block 303 in the grooves are limited to a certain extent through the rotating groove, the rotating stability of the first rotating handle 2 and the second rotating handle 3 is improved, and the cutting wheel 404 is ensured to firmly cut the gas corrugated pipe.

In this embodiment, the split positions of the first rotating handle 2 and the second rotating handle 3 are respectively provided with a first magnetic attraction block 202 and a first adsorption groove 302, and the split positions of the first attaching portion 5 and the second attaching portion 6 are respectively provided with a plurality of second adsorption grooves 502 and a plurality of second magnetic attraction blocks 602.

In specific implementation, through the first magnetic attraction blocks 202 and the first adsorption grooves 302 respectively arranged on the first rotating handle 2 and the second rotating handle 3, the splicing stability of the first rotating handle 2 and the second rotating handle 3 is further improved, and simultaneously, through the plurality of second adsorption grooves 502 and the plurality of second magnetic attraction blocks 602 respectively arranged on the first attaching part 5 and the second attaching part 6, the cutting stability is improved by reinforcing the fixation of the gas corrugated pipe.

In this embodiment, the device further includes a fixed adjustment mechanism disposed at the bottom of the mounting base plate 1, where the fixed adjustment mechanism is used to adjust the position and the height of the mounting base plate 1.

In this embodiment, the fixed adjustment mechanism includes a fixing base 801, an adjusting rod 802, an adjusting ring 803 and a suction cup 804, the fixing base 801 is mounted at the bottom of the mounting base 1, the fixing base 801 is hinged with the adjusting rod 802, and the middle part and the lower end part of the adjusting rod 802 are respectively provided with the adjusting ring 803 and the suction cup 804.

In specific implementation, when the leaked fuel gas corrugated pipe is cut on a wall or a ceramic tile, the adjusting rod 802 is turned inwards by 90 degrees from the mounting groove 103 at the bottom of the mounting bottom plate 1, and the cutting device for quick maintenance of the fuel gas pipeline is fixedly adsorbed by the sucker 804, so that the cutting device can be fixedly attached to the wall and vertical to the ground, meanwhile, the adjusting ring 803 is rotated to control the length of the adjusting rod 802, and the height of the cutting device for quick maintenance of the fuel gas pipeline is adjusted, so that the cutting of the fuel gas corrugated pipe is more convenient.

In specific implementation, the protection pads 102 can be arranged on the front end face and the rear end face of the mounting bottom plate 1, so that damage of the ground impact force to the cutting device for quickly maintaining the gas pipeline in the utility model when the gas pipeline falls accidentally is reduced.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a cutting device is used in quick maintenance of gas pipeline which characterized in that: the gas corrugated pipe comprises a mounting bottom plate (1) and an inner and outer layer cutting mechanism which is arranged on the mounting bottom plate (1) in a sliding manner, wherein the inner and outer layer cutting mechanism is used for cutting off the inner and outer layers of the gas corrugated pipe;

the inner and outer layer cutting mechanism comprises a ring cutting piece, a first rotating handle (2) and a second rotating handle (3), wherein the first rotating handle (2) and the second rotating handle (3) are hinged to each other, the first rotating handle (2) and the second rotating handle (3) are used for being hinged to each other on the surface of the gas corrugated pipe and rotating along a cutting section, the ring cutting piece is located on the first rotating handle (2), and the ring cutting piece is used for carrying out ring cutting on the inner and outer layers of the gas corrugated pipe.

2. The cutting device for rapid maintenance of a gas pipeline according to claim 1, wherein: the circular cutting piece comprises a cutting wheel (404) and an adjusting component for adjusting the height of the cutting wheel (404), and the cutting end of the cutting wheel (404) is pressed against the outer surface of the gas corrugated pipe and performs circular cutting on the gas corrugated pipe.

3. The cutting device for rapid maintenance of a gas pipeline according to claim 2, wherein: the utility model provides an adjusting part includes stationary blade (401), adjusting spring (402), cutting frame (403), screw thread regulation pole (405) and stopper (406), stationary blade (401) are installed the front and back side at first rotation handle (2) middle part, adjusting spring (402) are connected at the lower surface of stationary blade (401), adjusting spring (402) lower extreme is connected with cutting frame (403), just two slide bars (4031) on cutting frame (403) upper portion are located adjusting spring (402) and slide and pass stationary blade (401), the middle part and the bottom of cutting frame (403) are provided with screw thread regulation hole (4032) and mounting bracket (4033) respectively, just cutting wheel (404) are installed in mounting bracket (4033), screw thread regulation pole (405) are located screw thread regulation hole (201) that first rotation handle (2) middle part set up, just the lower extreme of screw thread regulation pole (405) is located screw thread regulation hole (4032) at cutting frame (403) middle part, the lower part of screw thread regulation pole (405) is provided with stopper (406).

4. The cutting device for rapid maintenance of a gas pipeline according to claim 1, wherein: be provided with first laminating portion (5) on first rotation handle (2), be provided with second laminating portion (6) on second rotation handle (3), first laminating portion (5) with second laminating portion (6) all laminate with the gas bellows surface mutually, just first laminating portion (5) with second laminating portion (6) amalgamate each other.

5. The cutting device for rapid maintenance of a gas pipeline according to claim 4, wherein: the first attaching part (5) and the second attaching part (6) are respectively provided with a first semi-arc scraping ring (503) and a second semi-arc scraping ring (603), and the first semi-arc scraping ring (503) and the second semi-arc scraping ring (603) are in head-tail correspondence.

6. The cutting device for rapid maintenance of a gas pipeline according to claim 4 or 5, wherein: the second attaching part (6) is provided with a sliding frame (7), and the sliding frame (7) is arranged on the mounting base plate (1).

7. The cutting device for rapid maintenance of a gas pipeline according to claim 4, wherein: first laminating portion (5) are gone up and are followed the direction of rotation of first rotation handle (2) has been seted up first rotation groove (501), second laminating portion (6) are gone up and are followed the direction of rotation of second rotation handle (3) has been seted up second rotation groove (601), just first rotation groove (501) with second rotation groove (601) head and tail corresponds each other, first rotation handle (2) with the rotation position department of second rotation handle (3) is provided with first rotation slider (203) and second rotation slider respectively, just first rotation slider with the second rotation slider is located respectively first rotation groove (501) with in second rotation groove (601).

8. The cutting device for rapid maintenance of a gas pipeline according to claim 4, wherein: the first rotary handle (2) and the second rotary handle (3) are respectively provided with a first magnetic attraction block (202) and a first adsorption groove (302), and the first attaching part (5) and the second attaching part (6) are respectively provided with a plurality of second adsorption grooves (502) and a plurality of second magnetic attraction blocks (602).

9. The cutting device for rapid maintenance of a gas pipeline according to claim 1, wherein: the device also comprises a fixed adjusting mechanism arranged at the bottom of the mounting bottom plate (1), and the fixed adjusting mechanism is used for adjusting the position and the height of the mounting bottom plate (1).

10. The cutting device for rapid maintenance of a gas pipeline according to claim 9, wherein: the fixing and adjusting mechanism comprises a fixing seat (801), an adjusting rod (802), an adjusting ring (803) and a sucker (804), wherein the fixing seat (801) is installed at the bottom of the mounting base plate (1), the adjusting rod (802) is hinged to the fixing seat (801), and the adjusting ring (803) and the sucker (804) are respectively arranged at the middle part and the lower end part of the adjusting rod (802).