Natural gas pipeline anti-deformation cutting device

Abstract

The invention relates to the field of natural gas pipeline cutting, in particular to a natural gas pipeline anti-deformation cutting device. According to an existing natural gas pipeline cutting device, a pipeline is inconvenient to support in the cutting process, the situation that water mist spraying is not timely or inaccurate is prone to occurring, a notch of the pipeline deforms, workers need to take and collect pipeline tailings, the cutting efficiency of the natural gas pipeline is low, and meanwhile the cutting efficiency of the natural gas pipeline is high. Certain potential safety hazards also exist. A natural gas pipeline anti-deformation cutting device comprises a bottom frame and the like. The top of the bottom frame is fixedly connected with a pipeline clamping seat, and the pipeline clamping seat is rotationally connected with a combined hoop. According to the gas pipeline cutting device, the cutting position of the gas pipeline is supported, meanwhile, water mist is sprayed to the contact position of the knife sawing machine and the gas pipeline for cooling, and therefore the situation that the gas pipeline deforms in the cutting process can be prevented, and then the connector position of the cut gas pipeline is smoother and more standard.

Description

Technical Field

[0001] The invention relates to the field of natural gas pipeline cutting, and in particular to a natural gas pipeline deformation-proof cutting device. Background Art

[0002] Gas pipelines are usually used to transport natural gas or other fuel gases to homes or commercial buildings. The manufacture and delivery of gas pipelines require a series of strict production and quality control procedures to ensure the safety and reliability of the pipelines. Before the gas pipelines leave the factory, port cutting is required to facilitate subsequent connection and installation, ensuring that the pipelines can be accurately docked with other pipelines or accessories.

[0003] However, most of the current natural gas pipeline cutting devices cut the natural gas pipeline through the cutting device, and the staff uses a spray bottle to spray water mist on the natural gas pipeline and the cutting device to cool down. It is inconvenient to support the pipeline during the cutting process, which can easily cause the natural gas pipeline to be impacted. It is also easy for the water mist to be sprayed untimely or inaccurately, which will cause deformation at the pipeline incision. The pipeline tail material will fall freely downward when the cutting is completed, and the staff is required to take and collect the pipeline tail material, which leads to low efficiency in natural gas pipeline cutting and certain safety hazards. Summary of the invention

[0004] In view of the shortcomings or deficiencies of the above-mentioned prior art, the present invention provides a natural gas pipeline anti-deformation cutting device, which can prevent the gas pipeline from being deformed during the cutting process, so that the cut gas pipeline interface is smoother and more standardized, and can also automatically clamp and cut the pipeline tail material, thereby improving the gas pipeline cutting efficiency and improving the operation and installation to a certain extent.

[0005] A natural gas pipeline deformation prevention cutting device comprises a base frame, a pipeline holder is fixedly connected to the top of the base frame, a combined hoop is rotatably connected to the pipeline holder, the combined hoop is composed of two half hoops, a gear ring is fixedly connected to the lower part of the combined hoop, a gas pipeline is placed on the pipeline holder, the combined hoop is sleeved on the gas pipeline, the gas pipeline passes through the gear ring, a driving motor is fixedly connected to one side of the pipeline holder, a driving gear is fixedly connected to the output shaft of the driving motor, the driving gear is meshed with the gear ring, a saw machine is slidably connected to the top of the base frame, convex rods are arranged at both ends of the saw machine, two return springs are connected between the saw machine and the base frame, two guide slot plates are slidably connected to the top of the base frame, a guide bevel groove and a slot are provided on the guide slot plate, the convex rods at both ends of the saw machine are respectively located in the guide bevel grooves on the two guide slot plates, a supporting cooling component is arranged on the base frame, and the supporting cooling component is used to support and cool the gas pipeline during the cutting process.

[0006] The cam is connected with the bottom end of the base frame by the spring, and the cam is connected with the bottom end of the base frame by the spring, and the cam is connected with the bottom end of the base frame by the spring. The cam is provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels, and the guide wheels are provided with a plurality of guide wheels.

[0007] As a further preferred solution, it also includes a clamping and unloading assembly, the clamping and unloading mechanism is arranged on the base frame, the clamping and unloading mechanism includes a rotating frame, the top of the base frame is rotatably connected to the rotating frame, a torsion spring is connected between the rotating frame and the top of the base frame, the torsion spring is sleeved on the rotating frame, the lower part of the rotating frame is fixedly connected to a one-way bearing, the one-way bearing is fixedly connected to a unloading gear, one of the guide groove plates is fixedly connected to a rack frame, the unloading gear will mesh with the rack frame, the upper part of the rotating frame is fixedly connected to a mounting shaft frame, the mounting shaft frame is located above the gas pipeline, and the mounting shaft frame is rotatably connected to a left clamp arm and a right clamp arm, The lower part of the side where the left clamp arm and the right clamp arm are close to each other is provided with a protrusion, and the left clamp arm and the right clamp arm are symmetrically arranged and cooperate with each other, the top of the left clamp arm and the right clamp arm are fixedly connected with an extrusion inclined surface block, and a stabilizing spring is connected between the left clamp arm and the right clamp arm and the mounting shaft frame, and a sliding drum frame is slidably connected to the rotating frame, and a square groove is opened on the upper part of the sliding drum frame, and the mounting shaft frame and the two extrusion inclined surface blocks pass through the square groove on the sliding drum frame, and the edge of the square groove on the sliding drum frame contacts with the side of the two extrusion inclined surface blocks away from each other, and the lower part of the sliding drum frame is rotatably connected with a lifting frame, and the lower part of the lifting frame is fixedly connected to one of the protruding rods on the knife saw machine.

[0008] The present invention has the following advantages: first, the staff starts the driving motor and the servo motor, the driving motor will drive the gas pipeline to rotate, and at the same time the servo motor will drive the four arc push rods to jointly support the gas pipeline, the saw will gradually rise to cut one end of the gas pipeline, and at the same time the water in the water tank is sprayed through the atomizing nozzle to the contact point between the saw and the gas pipeline, thereby cooling the saw and the gas pipeline to prevent the high temperature from causing deformation of the gas pipeline. In this way, by supporting the cutting point of the gas pipeline and spraying water mist on the contact point between the saw and the gas pipeline to cool it down, it is possible to prevent the gas pipeline from being deformed during the cutting process, thereby making the cut gas pipeline interface smoother and more standardized.

[0009] When the gas pipeline cutting is completed, the left clamp arm and the right clamp arm will jointly clamp the pipeline tail material. When the sliding frame drives the two guide groove plates to move horizontally in the opposite direction to reset, the rotation of the rotating frame will drive the sliding cylinder frame, the left clamp arm, the right clamp arm and the pipeline tail material to rotate. When the left clamp arm and the right clamp arm drive the pipeline tail material to rotate to the appropriate position, the pipeline tail material will break away from the left clamp arm and the right clamp arm and fall downward. In this way, the pipeline tail material cut off the gas pipeline can be automatically clamped and discharged, which improves the efficiency of gas pipeline cutting while reducing the contact between staff and equipment and machines, thereby improving operation safety to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 Schematic diagram of the three-dimensional structure of the present invention.

[0011] Figure 2 A schematic diagram of a partial three-dimensional structure of the clamping and blanking assembly of the present invention.

[0012] Figure 3 A schematic diagram of a partially disassembled three-dimensional structure of the clamping and blanking assembly of the present invention.

[0013] Figure 4 A partial three-dimensional structural schematic diagram of the present invention.

[0014] Figure 5 A schematic diagram of a partially cutaway three-dimensional structure of a supporting cooling assembly of the present invention.

[0015] Figure 6 The present invention Figure 5 Schematic diagram of the enlarged three-dimensional structure of A in the middle.

[0016] Figure 7 A schematic diagram of a partially disassembled three-dimensional structure of a supporting cooling component of the present invention.

[0017] Among them: 1-base, 2-pipe holder, 3-combination hoop, 4-gear ring, 41-gas pipeline, 5-drive motor, 61-driving gear, 62-knife saw, 63-reset spring, 64-guide groove plate, 71-servo motor, 72-threaded rod, 73-sliding frame, 74-mounting frame, 741-compression spring, 75-supporting ring, 76-arc push rod, 77-arc clamping rod, 7701-rubber ring , 771-sliding shaft, 772-limit spring, 78-water tank, 781-one-way water pipe, 79-push plate frame, 710-atomizing nozzle, 81-rotating frame, 82-torsion spring, 821-one-way bearing, 83-unloading gear, 84-rack frame, 85-installing shaft frame, 86-left clamping arm, 87-right clamping arm, 88-extrusion ramp block, 881-stabilizing spring, 89-sliding cylinder frame, 810-lifting frame. DETAILED DESCRIPTION

[0018] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can all be customized according to the description in the specification and drawings. The specific connection methods of each part all adopt conventional means such as mature bolts, rivets, welding, and bonding in the prior art, which will not be described in detail here.

[0019] Example 1

[0020] A natural gas pipeline anti-deformation cutting device, such as Figure 1-Figure 7As shown, it includes a base frame 1, a pipe holder 2 is fixedly connected to the top of the base frame 1, a combined hoop 3 is rotatably connected to the pipe holder 2, the combined hoop 3 is composed of two half hoops, a gear ring 4 is connected to the lower part of the combined hoop 3 by bolts, a gas pipeline 41 is placed on the pipe holder 2, the combined hoop 3 is sleeved on the gas pipeline 41, the gas pipeline 41 passes through the gear ring 4, a driving motor 5 is connected to one side of the pipe holder 2 by bolts, and a driving gear 61 is connected to the output shaft of the driving motor 5 by a flat key, and the driving gear 61 is connected to the The gear ring 4 is meshed, and a sawing machine 62 is slidably connected to the top of the base frame 1. Both ends of the sawing machine 62 are provided with convex rods. Two return springs 63 are connected between the sawing machine 62 and the base frame 1 through hooks. Two guide groove plates 64 are slidably connected to the top of the base frame 1. The guide groove plates 64 are provided with guide bevel grooves and slots. The convex rods at both ends of the sawing machine 62 are respectively located in the guide bevel grooves on the two guide groove plates 64. A supporting and cooling component is provided on the base frame 1. The supporting and cooling component is used to support and cool the gas pipeline 41 during the cutting process.

[0021] The supporting cooling component includes a servo motor 71, the lower part of the base frame 1 is connected to the servo motor 71 by bolts, the lower part of the base frame 1 is rotatably connected to a threaded rod 72, the output shaft of the servo motor 71 is fixedly connected to the threaded rod 72, and a sliding frame 73 is slidably connected to the base frame 1. Both sides of the sliding frame 73 are provided with convex columns, and the convex columns on both sides of the sliding frame 73 are respectively located in the straight grooves on the two guide groove plates 64. The lower part of the sliding frame 73 is connected to the threaded rod 72 by threads, and the upper part of the sliding frame 73 is slidably connected to the upper part of the sliding frame 73. The mounting frame 74 is connected to the sliding frame 73, and a compression spring 741 is connected between the mounting frame 74 and the sliding frame 73 through a hook. The compression spring 741 is sleeved on the mounting frame 74. A support ring 75 is welded to the end of the mounting frame 74 away from the sliding frame 73. Four arc push rods 76 are slidably connected to the mounting frame 74. The ends of the four arc push rods 76 away from each other are provided with an extrusion arc surface, and the ends of the four arc push rods 76 close to each other are provided with a guide arc surface. The mounting frame 74 and the support ring 75 are slidably connected. Four arc surface clamping rods 77 are connected, and the ends of the four arc surface clamping rods 77 that are close to each other are provided with a pushing arc surface, and the ends of the four arc surface clamping rods 77 that are away from each other are provided with a roller. A rubber ring 7701 is set between the four arc surface clamping rods 77, and a sliding shaft 771 is slidably connected in the mounting frame 74. The end of the sliding shaft 771 close to the sliding frame 73 contacts the guide arc surfaces on the four arc surface push rods 76, and the end of the sliding shaft 771 away from the sliding frame 73 contacts the pushing arc surfaces on the four arc surface clamping rods 77. A limit spring 772 is connected between 71 and the inner wall of the mounting frame 74 via a hook, and the limit spring 772 is sleeved on the sliding shaft 771. A water tank 78 is welded on the mounting frame 74, and two notches are opened on the side of the water tank 78 away from the sliding frame 73. A one-way water pipe 781 is connected to the water tank 78 via a flange, and the water tank 78 is communicated with the one-way water pipe 781. A push plate frame 79 is slidably connected to one end of the water tank 78 close to the sliding frame 73, and an atomizing nozzle 710 is connected to the bottom of the water tank 78 via a flange.

[0022] Initially, a gas pipeline 41 is placed on the pipeline holder 2, and the combined hoop 3 limits the gas pipeline 41. One end of the gas pipeline 41 is located directly above the sawing machine 62. A certain amount of water is stored in the water tank 78. First, the staff starts the driving motor 5 and the servo motor 71. The driving motor 5 drives the active gear 61 to rotate. The rotation of the active gear 61 drives the gear ring 4 to rotate. The rotation of the gear ring 4 drives the combined hoop 3 and the gas pipeline 41 to rotate. At the same time, the servo motor 71 drives the threaded rod 72 to rotate. The rotation of the threaded rod 72 drives the sliding frame 73 to move horizontally through the thread. The horizontal movement of the sliding frame 73 drives the mounting frame 74, the supporting ring 75 and the water tank 78 to move horizontally. When the supporting ring 75 and one end of the mounting frame 74 enter the gas pipeline 41, , one end of the gas pipeline 41 will contact the extrusion arc surfaces on the four arc push rods 76, the gas pipeline 41 will squeeze the four arc push rods 76 to move in a direction close to each other, the movement of the four arc push rods 76 will jointly squeeze the sliding shaft 771 to move horizontally, the limit spring 772 will be compressed, the horizontal movement of the sliding shaft 771 will push the four arc clamping rods 77 to move away from each other, the rubber ring 7701 will be stretched, the rollers on the four arc clamping rods 77 will contact the inner wall of the gas pipeline 41, and the four arc clamping rods 77 will jointly support the gas pipeline 41. At this time, the atomizing nozzle 710 is aligned with the bottom of one end of the gas pipeline 41, and one end of the gas pipe will contact the side of the water tank 78 away from the sliding frame 73, and then the sliding frame 73 servo motor 71 will drive The movable sliding frame 73 continues to move horizontally, and the compression spring 741 will be compressed. The horizontal movement of the sliding frame 73 will push the two guide groove plates 64 to move horizontally. The two guide groove plates 64 will jointly squeeze the saw blade 62 to move upward, and the reset spring 63 will be compressed. As the sliding frame 73 moves horizontally, the saw blade 62 will gradually rise to cut one end of the gas pipeline 41. At the same time, the sliding frame 73 will contact the push plate frame 79. The horizontal movement of the sliding frame 73 will push the push plate frame 79 to move horizontally. The horizontal movement of the push plate frame 79 will push the water in the water tank 78 to spray through the atomizing nozzle 710 to the contact point between the saw blade 62 and the gas pipeline 41, thereby cooling the saw blade 62 and the gas pipeline 41 to prevent the gas pipeline 41 from being deformed due to high temperature. When the gas pipeline 41 is cut, the cut pipe tail is located on the supporting ring 75 and the mounting frame 74, and the servo motor 71 drives the sliding frame 73 to move horizontally in the opposite direction through the threaded rod 72, and the compression spring 741 will reset. Then the reset of the sliding frame 73 will drive the supporting ring 75, the mounting frame 74 and the water tank 78 to move horizontally in the opposite direction and reset. The supporting ring 75 will be out of contact with the gas pipeline 41, and the limit spring 772 will reset. The reset of the limit spring 772 will drive the sliding shaft 771 to move horizontally in the opposite direction and reset. At the same time, the rubber ring 7701 will rebound. The rebound of the rubber ring 7701 will drive the four arc-surface clamping rods 77 to move and reset in the direction of approaching each other. The reset of the sliding shaft 771 will push the four arc-surface push rods 76 to move and reset in the direction of moving away from each other.The four arc-surface push rods 76 will jointly squeeze the pipe tail material to move horizontally away from the supporting ring 75 and the mounting frame 74. The staff will take away the pipe tail material, and then the sliding frame 73 will move in the opposite direction to push the two guide slot plates 64 to move in the opposite direction and reset horizontally. The reset of the two guide slot plates 64 will jointly squeeze the saw blade 62 to move downward and reset. The reset spring 63 will reset, and the saw blade 62 will be out of contact with the gas pipeline 41. Finally, the staff will turn off the servo motor 71 and the drive motor 5, and remove the cut gas pipeline 41. In this way, by supporting the cut portion of the gas pipeline 41 and spraying water mist on the contact portion between the saw blade 62 and the gas pipeline 41 to cool it down, it is possible to prevent the gas pipeline 41 from deforming during the cutting process, thereby making the interface of the cut gas pipeline 41 smoother and more standardized.

[0023] Example 2

[0024] On the basis of Example 1, Figure 2 and Figure 3 As shown, it also includes a clamping and unloading component, the clamping and unloading mechanism is arranged on the base frame 1, the clamping and unloading mechanism includes a rotating frame 81, the top of the base frame 1 is rotatably connected to the rotating frame 81, a torsion spring 82 is connected between the rotating frame 81 and the top of the base frame 1 through a hook, the torsion spring 82 is sleeved on the rotating frame 81, the lower part of the rotating frame 81 is fixedly connected to a one-way bearing 821, and a unloading gear 83 is connected to the one-way bearing 821 through a flat key, a rack frame 84 is welded on one of the guide groove plates 64, and the unloading gear 83 will mesh with the rack frame 84, and a mounting shaft frame 85 is welded on the upper part of the rotating frame 81, the mounting shaft frame 85 is located above the gas pipeline 41, and a left clamp arm 86 and a right clamp arm 87 are rotatably connected to the mounting shaft frame 85, and the left clamp arm 86 and the right clamp arm 87 are used to clamp the gas Pipe 41, the lower part of the side where the left clamp arm 86 and the right clamp arm 87 are close to each other is provided with a protrusion, and the left clamp arm 86 and the right clamp arm 87 are symmetrically arranged and cooperate with each other, the top of the left clamp arm 86 and the right clamp arm 87 are fixedly connected with an extrusion inclined surface block 88, and the left clamp arm 86 and the right clamp arm 87 are connected to the mounting shaft frame 85 by a stabilizing spring 881 through a hook, and a sliding cylinder frame 89 is slidably connected to the rotating frame 81, and a square groove is opened on the upper part of the sliding cylinder frame 89, and the mounting shaft frame 85 and the two extrusion inclined surface blocks 88 pass through the square groove on the sliding cylinder frame 89, and the edge of the square groove on the sliding cylinder frame 89 contacts with the side of the two extrusion inclined surface blocks 88 away from each other, and the lower part of the sliding cylinder frame 89 is rotatably connected with a lifting frame 810, and the lower part of the lifting frame 810 is fixedly connected to one of the protruding rods on the knife saw machine 62.

[0025] When the sliding frame 73 pushes the two guide slot plates 64 to move horizontally, one of the guide slot plates 64 will drive the rack frame 84 to move horizontally, and the rack frame 84 will mesh with the unloading gear 83. The horizontal movement of the rack frame 84 will drive the unloading gear 83 to rotate. The rotation of the unloading gear 83 will not drive the rotating frame 81 to rotate under the action of the one-way bearing 821. Then the guide slot plate 64 drives the sawing machine 62 to move upward, and the sawing machine 62 will drive the lifting frame 810 to gradually move upward. The upward movement of the lifting frame 810 will drive the sliding drum frame 89 to move upward, and the upward movement of the sliding drum frame 89 will push the two The extrusion bevel blocks 88 swing in the direction of approaching each other, and the swing of the two extrusion bevel blocks 88 will drive the left clamp arm 86 and the right clamp arm 87 to swing in the direction of approaching each other, the stabilizing spring 881 will be twisted, and the protrusions on the left clamp arm 86 and the right clamp arm 87 will be respectively stuck in the two notches on the water tank 78. When the gas pipeline 41 is cut, the left clamp arm 86 and the right clamp arm 87 will clamp the pipeline tail together. When the sliding frame 73 drives the two guide groove plates 64 to move horizontally in the opposite direction to reset, one of the guide groove plates 64 will drive the rack frame 84 to move horizontally in the opposite direction to reset, and the rack frame 84 will move horizontally in the opposite direction to reset. The horizontal movement will drive the unloading gear 83 to rotate in the opposite direction, and the reverse rotation of the unloading gear 83 will drive the one-way bearing 821 and the rotating frame 81 to rotate, and the torsion spring 82 will be twisted. The rotation of the rotating frame 81 will drive the sliding cylinder frame 89, the left clamping arm 86, the right clamping arm 87 and the pipe tail to rotate. When the left clamping arm 86 and the right clamping arm 87 drive the pipe tail to rotate to a suitable position, the saw machine 62 will drive the lifting frame 810 and the sliding cylinder frame 89 to move downward, and the sliding cylinder frame 89 will no longer squeeze the two squeezing inclined plane blocks 88, and the stabilizing spring 881 will reset. The reset of the stabilizing spring 881 will drive the left clamping arm 86 to rotate. 6 and the right clamp arm 87 are swung back and forth in the direction away from each other, and the pipe tail material will break away from the left clamp arm 86 and the right clamp arm 87 and fall downward. Then the rack frame 84 will break away from the discharge gear 83, and the torsion spring 82 will be reset. The reset of the torsion spring 82 will drive the rotating frame 81, the one-way bearing 821, the discharge gear 83 and the sliding cylinder frame 89 to rotate and reset in the opposite direction. In this way, the pipe tail material cut off from the gas pipeline 41 can be automatically clamped and discharged, which improves the cutting efficiency of the gas pipeline 41 while reducing the contact between the staff and the equipment and the machine, thereby improving the operation safety to a certain extent.

[0026] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A natural gas pipeline anti-deformation cutting device, characterized by: The invention comprises a base frame (1), a pipe holder (2) is fixedly connected to the top of the base frame (1), a combined hoop (3) is rotatably connected to the pipe holder (2), the combined hoop (3) is composed of two half hoops, a gear ring (4) is fixedly connected to the lower part of the combined hoop (3), a gas pipeline (41) is placed on the pipe holder (2), the combined hoop (3) is sleeved on the gas pipeline (41), the gas pipeline (41) passes through the gear ring (4), and a driving motor (5) is fixedly connected to one side of the pipe holder (2), the driving motor (5) ) is fixedly connected to the output shaft of the base frame (1), the active gear (61) is meshed with the gear ring (4), the top of the base frame (1) is slidably connected to a sawing machine (62), both ends of the sawing machine (62) are provided with convex rods, two return springs (63) are connected between the sawing machine (62) and the base frame (1), the top of the base frame (1) is slidably connected to two guide groove plates (64), and a supporting and cooling component is provided on the base frame (1), the supporting and cooling component is used to support and cool the gas pipeline (41) during the cutting process.

2. A natural gas pipeline anti-deformation cutting device according to claim 1, characterized in that: The guide groove plate (64) is provided with a guide bevel groove and a straight groove, and the protruding rods at both ends of the knife saw (62) are respectively located in the guide bevel grooves on the two guide groove plates (64).

3. A natural gas pipeline anti-deformation cutting device according to claim 1, characterized in that: The supporting cooling component comprises a servo motor (71), the servo motor (71) is fixedly connected to the lower part of the base frame (1), a threaded rod (72) is rotatably connected to the lower part of the base frame (1), an output shaft of the servo motor (71) is fixedly connected to the threaded rod (72), a sliding frame (73) is slidably connected to the upper part of the base frame (1), the lower part of the sliding frame (73) is threadedly connected to the threaded rod (72), the upper part of the sliding frame (73) is slidably connected to a mounting frame (74), and a mounting frame (74) is connected to the sliding frame (73). A compression spring (741) is connected, and the compression spring (741) is sleeved on the mounting frame (74). The end of the mounting frame (74) away from the sliding frame (73) is fixedly connected to a supporting ring (75). Four arc-surface push rods (76) are slidably connected to the mounting frame (74). The ends of the four arc-surface push rods (76) away from each other are provided with an extrusion arc surface, and the ends of the four arc-surface push rods (76) close to each other are provided with a guide arc surface. Four arc-surface clamping rods (77) are slidably connected between the mounting frame (74) and the supporting ring (75). The ends of the four arc surface clamping rods (77) close to each other are all provided with a pushing arc surface, and the ends of the four arc surface clamping rods (77) away from each other are all provided with a roller. A rubber ring (7701) is sleeved between the four arc surface clamping rods (77). A sliding shaft (771) is slidably connected in the mounting frame (74). The end of the sliding shaft (771) close to the sliding frame (73) contacts the guide arc surfaces on the four arc surface push rods (76), and the end of the sliding shaft (771) away from the sliding frame (73) contacts the pushing arc surfaces on the four arc surface clamping rods (77). A limit spring (772) is connected between the sliding shaft (771) and the inner wall of the mounting frame (74), and the limit spring (772) is sleeved on the sliding shaft (771). A water tank (78) is fixedly connected to the mounting frame (74), and a one-way water pipe (781) is fixedly connected to the water tank (78). The water tank (78) is communicated with the one-way water pipe (781). One end of the water tank (78) close to the sliding frame (73) is slidably connected to a push plate frame (79), and an atomizing nozzle (710) is fixedly connected to the bottom of the water tank (78).

4. A natural gas pipeline anti-deformation cutting device according to claim 3, characterized in that: Both sides of the sliding frame (73) are provided with convex columns, and the convex columns on both sides of the sliding frame (73) are respectively located in the straight grooves on the two guide groove plates (64).

5. A natural gas pipeline anti-deformation cutting device according to claim 3, characterized in that: The water tank (78) has two notches on one side away from the sliding frame (73).

6. A natural gas pipeline anti-deformation cutting device according to claim 1, characterized in that: The machine also comprises a clamping and unloading assembly, wherein the clamping and unloading mechanism is arranged on the base frame (1), and the clamping and unloading mechanism comprises a rotating frame (81), the top of the base frame (1) is rotatably connected to the rotating frame (81), a torsion spring (82) is connected between the rotating frame (81) and the top of the base frame (1), the torsion spring (82) is sleeved on the rotating frame (81), and a one-way bearing (821) is fixedly connected to the lower part of the rotating frame (81), and the one-way bearing (821) is fixedly connected to the lower part of the rotating frame (81). A feeding gear (83) is fixedly connected to the bearing (821), a rack frame (84) is fixedly connected to one of the guide groove plates (64), and the feeding gear (83) is meshed with the rack frame (84). A mounting shaft frame (85) is fixedly connected to the upper part of the rotating frame (81), and the mounting shaft frame (85) is located above the gas pipeline (41). A left clamping arm (86) and a right clamping arm (87) are rotatably connected to the mounting shaft frame (85). The left clamping arm ( The left clamp arm (86) and the right clamp arm (87) are provided with a protrusion at the lower part of the side close to each other, and the left clamp arm (86) and the right clamp arm (87) are symmetrically arranged and cooperate with each other. The tops of the left clamp arm (86) and the right clamp arm (87) are fixedly connected with an extrusion inclined surface block (88). The left clamp arm (86) and the right clamp arm (87) are connected to the mounting shaft frame (85) with a stabilizing spring (881). The rotating frame (81) is slidably connected with a sliding cylinder frame (89). A square groove is formed on the upper portion of the sliding cylinder frame (89), the mounting shaft frame (85) and the two extrusion bevel blocks (88) both pass through the square groove on the sliding cylinder frame (89), the edge of the square groove on the sliding cylinder frame (89) contacts the side of the two extrusion bevel blocks (88) that are away from each other, and a lifting frame (810) is rotatably connected to the lower portion of the sliding cylinder frame (89), and the lower portion of the lifting frame (810) is fixedly connected to one of the protruding rods on the knife saw machine (62).

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