Cutting tool

Abstract

The invention discloses a cutting tool, which relates to the field of tools and comprises a fixed frame, a cutting part, an electrostatic discharge clamp, a wire and a gas detection part, the cutting part is arranged in the middle of the fixed frame and is in contact with the pipe fitting fixed on the fixed frame, and the cutting part and the pipe fitting are fixed on the fixed frame, so that the relative stability of operation is improved; due to the fact that an operator holds the cutting part by hand, static electricity generated by the human body and in the cutting process is released through the static electricity release clamp and the wire, and volatilization of a cutting opening and the concentration of combustible and harmful gas in the surrounding environment in the operation process can be continuously detected through the gas detection part in real time. And when the dangerous concentration is reached, an operator is reminded to stop working to ensure safety, and the existing technical problems are effectively solved. The cutting tool provided by the invention has the characteristics of intrinsic safety and high working efficiency.

Description

Technical Field

[0001] The invention belongs to the field of tools and apparatuses, and in particular relates to a cutting tool. Background Art

[0002] At oil and gas field operation sites or during workers' work, pipe cutting is often required, which requires a suitable tool.

[0003] In the existing technology, although the commonly used pipe cutting knives are relatively convenient to operate during use, they can only be used for smaller pipes and different models and specifications of cutting knives are often replaced for pipes of different sizes, which consumes a lot of physical energy; using cutting discs for electric cutting has a major explosion risk, is prone to sparks and static electricity, is unsafe and cannot meet the requirements of use. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a cutting tool to solve the problems in the prior art of high physical labor consumption in replacing the cutting blade, easy generation of sparks and static electricity by electric cutting with a cutting blade, and significant explosion risk.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cutting tool, comprising: a fixed frame, a cutting part, an electrostatic release clamp and a wire and a gas detection part;

[0007] The cutting part is arranged in the middle of the fixed frame and contacts the pipe fixed on the fixed frame. The static electricity release clamp and wire for releasing static electricity are arranged at one end of the fixed frame. The other end of the fixed frame is provided with a gas detection part for detecting flammable and harmful gases.

[0008] Preferably, the fixed frame includes: a first fixed frame, a second fixed frame and fasteners; the first fixed frame and the second fixed frame are both annular fixed frames, the pipe fittings are axially arranged on the first fixed frame and the second fixed frame, the fasteners are radially evenly distributed on the first fixed frame and the second fixed frame, the cutting part is arranged between the first fixed frame and the second fixed frame, and are relatively rotatably connected, the electrostatic release clamp and the wire are arranged at the bottom end of the second fixed frame, and the gas detection part is arranged at the upper end of the first fixed frame.

[0009] Preferably, there are two or more fasteners, and one end of the fastener close to the center of the first fixed frame and the second fixed frame is a fixed end, and the other end is a first operating handle.

[0010] Preferably, threaded through holes are uniformly opened on the first fixing frame and the second fixing frame in the circumferential direction, and fasteners are arranged on the first fixing frame and the second fixing frame through the threaded through holes and are fixedly connected by threads.

[0011] Preferably, the cutting part comprises: a moving ring and a cutting knife, the moving ring is slidably arranged on the first fixed frame and the second fixed frame, and is located between the two, and the cutting knife is vertically fixed on the moving ring and contacts the pipe fitting.

[0012] Preferably, the cutting knife is fixedly connected to the moving ring via threads, the cutting knife head is a rotatable circular cutting head, and a second operating handle is provided at one end of the handle, and an outer sliding sleeve of the second operating handle is provided with an anti-slip handle.

[0013] Preferably, the first fixed frame and the second fixed frame are provided with grooves for arranging the moving ring, and two ends of the moving ring are slidably arranged in the grooves of the first fixed frame and the second fixed frame respectively.

[0014] Preferably, grease or lubricating oil is injected into the groove.

[0015] Preferably, the electrostatic release clamp and the wire are arranged in a hollow cavity on the second fixed frame.

[0016] Preferably, the gas detection part is close to the cutting part, the gas detection part is a gas passage toward the cutting opening, and the side of the gas detection part facing the operator is a display screen.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention discloses a cutting tool, comprising: a fixed frame, a cutting part, an electrostatic release clamp, a wire and a gas detection part; the cutting part is arranged in the middle of the fixed frame, in contact with the pipe fixed on the fixed frame, and the cutting part and the pipe are fixed on the fixed frame, which improves the relative stability of the operation; because the operator holds the cutting part, the static electricity generated by the human body and the cutting process is released through the electrostatic release clamp and the wire static electricity, and the gas detection part can continuously detect the concentration of flammable and harmful gases volatilized from the cutting port and the surrounding environment during the operation, and remind the operator to stop the operation to ensure safety when the dangerous concentration is reached, effectively solving the problems of the prior art. The present invention provides a cutting tool with the characteristics of intrinsic safety and high working efficiency.

[0019] Furthermore, the anti-slip handle and the outer layer of the second operating handle are relatively slidably sleeved, and when in use, the anti-slip handle and the outer layer of the second operating handle can slide relatively, extending the size of the second operating handle and saving more effort.

[0020] Furthermore, the gas detection part is close to the cutting part, the gas detection part is a gas passage toward the cutting port, and the side of the gas detection part facing the operator is a display screen, which can facilitate observation of prompts. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of the present invention;

[0022] Figure 2 is a side view of the present invention;

[0023] Figure 3 It is a schematic diagram of the structure of two fasteners of the present invention;

[0024] Figure 4 It is a schematic diagram of the structure of four fasteners of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of two cutting knives of the present invention.

[0026] Among them: 1-first fixed frame; 2-second fixed frame; 3-fastener; 4-first operating handle; 5-fixed end; 6-second operating handle; 7-pipe fitting; 8-thread; 9-movement ring; 10-cutting knife; 11-cutting part; 12-static release clip and wire; 13-hollow cavity; 14-gas detection part; 15-threaded through hole. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0030] The present invention discloses a cutting tool, comprising: a fixed frame, a cutting part 11, an electrostatic release clamp and a wire 12 and a gas detection part 14;

[0031] The cutting part 11 is arranged in the middle of the fixed frame and contacts the pipe 7 fixed on the fixed frame. The static electricity release clamp and the wire 12 for releasing static electricity are arranged at one end of the fixed frame. The other end of the fixed frame is provided with a gas detection part 14 for detecting flammable and harmful gases.

[0032] The fixed frame includes: a first fixed frame 1, a second fixed frame 2 and a fastener 3; the first fixed frame 1 and the second fixed frame 2 are both annular fixed frames, the pipe 7 is axially arranged on the first fixed frame 1 and the second fixed frame 2, the fasteners 3 are radially evenly distributed on the first fixed frame 1 and the second fixed frame 2, the cutting part 11 is arranged between the first fixed frame 1 and the second fixed frame 2, and is relatively rotatably connected, the electrostatic release clamp and the wire 12 are arranged at the bottom end of the second fixed frame 2, and the gas detection part 14 is arranged at the upper end of the first fixed frame 1. There are two or more fasteners 3, and one end of the fastener 3 close to the center of the first fixed frame 1 and the second fixed frame 2 is a fixed end 5, and the other end is a first operating handle 4.

[0033] The first fixing frame 1 and the second fixing frame 2 are uniformly provided with threaded through holes 15 in the circumferential direction. The fasteners 3 are arranged on the first fixing frame 1 and the second fixing frame 2 through the threaded through holes 15 and are fixedly connected by threads.

[0034] The cutting part 11 includes: a moving ring 9 and a cutting knife 10. The moving ring 9 is slidably arranged on the first fixed frame 1 and the second fixed frame 2, and is located between the two. The cutting knife 10 is vertically fixed on the moving ring 9 and contacts the pipe 7. The cutting knife 10 is fixedly connected to the moving ring 9 by a thread 8. The cutter head of the cutting knife 10 is a rotatable circumferential cutter head, and a second operating handle 6 is arranged at one end of the handle. The outer sliding sleeve of the second operating handle 6 is provided with an anti-slip handle. The first fixed frame 1 and the second fixed frame 2 are provided with grooves for setting the moving ring 9, and the two ends of the moving ring 9 are respectively slidably arranged in the grooves of the first fixed frame 1 and the second fixed frame 2.

[0035] like Figure 1As shown, a cutting tool provided by an embodiment of the present invention includes: a fixed frame, including a first fixed frame 1 and a second fixed frame 2, the first fixed frame 1 and the second fixed frame 2 both have fasteners 3, there are two or more fasteners 3, and the fasteners 3 are evenly distributed along the annular fixed frame for fixing pipe fittings 7; a cutting part 11, the cutting part 11 is arranged between the first fixed frame 1 and the second fixed frame 2, and the cutting part 11 is relatively rotatably connected with the first fixed frame 1 and the second fixed frame 2; the cutting part 11 is composed of a moving ring 9 and a cutting knife 10, and the moving ring 9 is connected to the cutting knife 10 by a thread 8; the second fixed frame 2 has an electrostatic release clamp and a wire 12, and the electrostatic release clamp and the wire 12 are arranged in a hollow cavity 13 of the second fixed frame 2 for electrostatic release; a gas detection part 14, the gas detection part 14 is arranged at the other end of the first fixed frame 1, for flammable and harmful gas detection.

[0036] Specifically, the first fixed frame 1 and the second fixed frame 2 are both hollow ring-shaped; there are two or more fasteners 3, and the first fixed frame 1 and the second fixed frame 2 are connected to the fasteners 3 through threaded through holes 15. The side of the fastener 3 away from the outer circle of the first fixed frame 1 and the second fixed frame 2 is the first operating handle 4, and the side close to the center of the circle is the fixed end 5 that contacts the pipe 7; the fasteners 3 are evenly distributed along the ring-shaped fixed frame for fixing the pipe 7.

[0037] In the embodiment of the present invention, when using the cutting tool, the first fixed frame 1 and the second fixed frame 2 are connected through two or more fasteners 3, and the fasteners 3 are evenly distributed along the annular fixed frame to fix the pipe 7. A connecting rod is provided between the first operating handle 4 and the fixed end 5 contacting the pipe 7. The connecting rod has scales, so that the axis of the pipe 7 is consistent with the axis of the first fixed frame 1 and the second fixed frame 2, and the positioning is accurate; because the cutting part 11 is arranged between the first fixed frame 1 and the second fixed frame 2, the cutting part 11 is connected to the first fixed frame 1 and the second fixed frame 2 for relative rotation. After the first fixed frame 1 and the second fixed frame 2 are fixed, the cutting part 11 is composed of a moving ring 9 and a cutting knife 10. The moving ring 9 is connected to the cutting knife 10 with a thread 8, and the cutting blade is perpendicular to the pipe 7, which can prevent cutting. The blade edge bursts; when using the cutting tool, the second fixed frame 2 stores an electrostatic release clip and a wire 12, and the electrostatic release clip and the wire 12 are arranged in the hollow cavity 13 of the second fixed frame 2 for electrostatic release. The cover of the hollow cavity 13 is opened to take out the electrostatic release clip and the wire 12, and the electrostatic release clip is connected to the on-site grounding part; the gas detection unit 14 is arranged at the other end of the first fixed frame 1 for flammable and harmful gas detection; because the operator holds the second operating handle 6, the static electricity generated by the human body and the cutting process is electrostatically released through the electrostatic release clip and the wire 12. During the operation, the concentration of flammable and harmful gases volatilized from the cutting port and the surrounding environment can be continuously detected by the gas detection unit 14 at all times. When a dangerous concentration is reached, the operator is reminded to stop the operation to ensure safety, which effectively solves the problems of the prior art.

[0038] like Figure 1 , Figure 2As shown, in a specific implementation, the cutting portion 11 is connected to the first fixed frame 1 and the second fixed frame 2 in relative rotation so as to slide tightly together and can be injected with grease or lubricating oil; the cutting portion 11 is composed of a moving ring 9 and a cutting knife 10, the circular moving ring 9 is relatively rotated with the first fixed frame 1 and the second fixed frame 2, and the moving ring 9 is connected to the cutting knife 10 by a thread 8; the cutting knife 10 is located on the outer side of the circular moving ring 9 as the second operating handle 6, and the cutting knife 10 is located on the inner side of the circular moving ring 9 as a rotatable circular cutter head. The aforementioned cutting tool, wherein the second fixed frame 2 has an electrostatic release clip and a wire 12, and the electrostatic release clip and the wire 12 are arranged in a hollow cavity 13 of the second fixed frame 2 for electrostatic release; the hollow cavity 13 of the second fixed frame 2 is fixedly connected to the second fixed frame 2, and the hollow cavity 13 can be a container, and the shape is not limited. It is better to be connected to the outside and side of the circle of the second fixed frame 2 so as not to affect the use of the tool; the gas detection unit 14 is arranged at the other end of the first fixed frame 1, for flammable and harmful gas detection, and is better to be connected to the outside and side of the circle of the first fixed frame 1 so as not to affect the use of the tool.

[0039] Specifically, the cutting knife 10 is located outside the circular motion ring 9 and the second operating handle 6 is made of an electrostatically conductive rubber material on the outside, which can safely release static electricity and is firm and comfortable to hold.

[0040] like Figure 1 , Figure 2 As shown, in a specific implementation, the hollow cavity 13 of the second fixed frame 2 can be a metal tube or other material shape to ensure that the space for accommodating the electrostatic release clamp and the wire 12 is reliable in strength. The hollow cavity 13 is away from the hollow cavity 13 and the fixed connection part of the second fixed frame 2 has a cover to seal the hollow cavity. The sealing form can be a threaded connection or other form of clamping, and there is no restriction as long as it can be detachably connected; the electrostatic release clamp is a common elastic clamp, which can be reliably in contact with the on-site electrostatic conductive part. The length of the wire meets the on-site use requirements and varies from several meters without restriction.

[0041] Specifically, the gas detection unit 14 is arranged at the fixed connection part away from the first fixed frame 1, and is used for flammable and harmful gas detection. The connection is a detachable connection, which is convenient for inspection of the gas detection unit 14; the gas detection unit 14 is close to the cutting knife 10, and can accurately detect the concentration of flammable and harmful gases when the cutting tool is working; the gas detection unit 14 is a gas channel facing the cutting port, and the side of the gas detection unit 14 facing the operator is a display screen, which can facilitate observation of prompts.

[0042] like Figure 1 , Figure 2As shown, in a specific implementation, the first fixed frame 1 and the second fixed frame 2 are both hollow ring-shaped; there are two or more fasteners 3, and the first fixed frame 1 and the second fixed frame 2 are connected to the fasteners 3 through threaded through holes 15. The side of the fastener 3 away from the outer circle of the first fixed frame 1 and the second fixed frame 2 is the first operating handle 4, and the side close to the center of the circle is the fixed end 5 of the contact pipe 7. There is a connecting rod between the first operating handle 4 and the fixed end 5 of the contact pipe 7, and there is a scale on the connecting rod; the fasteners 3 are evenly distributed along the ring-shaped fixed frame for fixing the pipe 7, and can be spaced at intervals of 180° (two fasteners), 120° (three fasteners), and 90° (four fasteners).

[0043] Specifically, the first fixed frame 1 and the second fixed frame 2 include fasteners 3, which can be made of aluminum or other materials, or steel, etc., in order to reduce weight, facilitate operation, and achieve explosion-proof and static-conducting effects; the first fixed frame 1 and the second fixed frame 2 are both hollow rings, and the hollow rings can also be two half rings that can be detachably connected, which is convenient for installation during use.

[0044] like Figure 1 , Figure 2 As shown, in a specific implementation, the aforementioned cutting tool, wherein the cutting part 11 is composed of a moving ring 9 and a cutting knife 10, the circular moving ring 9 rotates relative to the first fixed frame 1 and the second fixed frame 2, the moving ring 9 is connected to the cutting knife 10 thread 8, the cutting knife 10 is one or more, and when the cutting knife 10 is multiple, the cutting knife 10 is evenly distributed along the moving ring 9 for cutting the pipe 7.

[0045] Specifically, the cutting knife 10 is located outside the circular motion ring 9 as the second operating handle 6, and the anti-slip handle is arranged on the outer layer of the second operating handle 6. The anti-slip handle and the outer layer of the second operating handle 6 are relatively slidably sleeved. When in use, the anti-slip handle and the outer layer of the second operating handle 6 can be relatively slid, extending the size of the second operating handle 6 and saving more effort.

[0046] like Figure 1 , Figure 2As shown, in a specific implementation, when a cutting tool provided by an embodiment of the present invention is in operation, the first fixed frame 1 and the second fixed frame 2 are connected by two or more fasteners 3, and the fasteners 3 are evenly distributed along the annular fixed frame to fix the pipe 7. A connecting rod is provided between the first operating handle 4 and the fixed end 5 contacting the pipe 7, and the connecting rod has scales, so that the axis of the pipe 7 is consistent with the axis of the first fixed frame 1 and the second fixed frame 2, and the positioning is accurate; the cutting part 11, because the cutting part 11 is arranged between the first fixed frame 1 and the second fixed frame 2, the cutting part 11 is relatively rotatably connected with the first fixed frame 1 and the second fixed frame 2, after the first fixed frame 1 and the second fixed frame 2 are fixed, the cutting part 11 is composed of a moving ring 9 and a cutting knife 10, and the moving ring 9 is connected with the cutting knife 10 by a thread 8, and the cutting blade is perpendicular to the pipe 7, which can prevent the cutting blade from bursting; when using the cutting tool, the second fixed frame 2 has an electrostatic release clip and a wire 12, and the electrostatic release clip and the wire 12 are arranged in a hollow cavity 13 of the second fixed frame 2 for electrostatic release, The cover of the hollow cavity 13 is opened to take out the electrostatic release clamp and the wire 12, and the electrostatic release clamp is connected to the on-site grounding part; the gas detection part 14 is arranged at the other end of the first fixed frame 1, and is used for flammable and harmful gas detection; because the operator holds the second operating handle 6, the static electricity generated by the human body and the cutting process is discharged through the electrostatic release clamp and the wire 12, and the concentration of flammable and harmful gases volatilized from the cutting port and the surrounding environment during the operation can be continuously detected by the gas detection part 14 at all times, and the operator is reminded to stop when a dangerous concentration is reached. Stop the operation to ensure safety; clamp the cut pipe 7 with two or more fasteners 3, and make the cutting blade perpendicular to the pipe 7 to prevent the cutting blade from bursting; mark the cut pipe 7 according to the required length, loosen the knife edge, clamp the cutting knife 10 on the pipe 7, align the blade with the marked line, and gradually advance the knife with the second operating handle 6; do not use too much force each time to advance the knife, and the depth of the knife should not exceed half a turn of the second operating handle 6 each time. The amount of advance can be slightly larger during the initial cutting so as to cut a deeper knife groove; when using, a small amount of lubricating oil should be added to the active parts of the cutting tool and the surface of the cut pipe 7 to reduce friction.

[0047] like Figure 3 As shown, further, the fasteners 3 are evenly distributed along the circular fixing frame for fixing the pipe fittings 7, and can be spaced at intervals of 180° (two fasteners), 120° (three fasteners), 90° (four fasteners). The figure shows two fasteners 3 evenly distributed along the circular fixing frame for fixing the pipe fittings 7, with an interval of 180° (two fasteners).

[0048] Specifically, there is one cutting knife 10 .

[0049] like Figure 4 As shown, further, the fasteners 3 are evenly distributed along the circular fixing frame for fixing the pipe fittings 7, and can be spaced at intervals of 180° (two fasteners), 120° (three fasteners), and 90° (four fasteners). The figure shows four fasteners 3 evenly distributed along the circular fixing frame for fixing the pipe fittings 7, with an interval of 90° (four fasteners).

[0050] like Figure 5 As shown, further, the fasteners 3 are evenly distributed along the annular fixed frame for fixing the pipe fittings 7, and can be spaced at intervals of 180° (two fasteners), 120° (three fasteners), 90° (four fasteners). The figure shows two fasteners 3 evenly distributed along the annular fixed frame for fixing the pipe fittings 7, with an interval of 180° (two fasteners). There are one or more cutting knives 10. When there are multiple cutting knives 10, the cutting knives 10 are evenly distributed along the moving ring 9 for cutting the pipe fittings 7. The figure shows two cutting knives 10 evenly distributed along the annular fixed frame for cutting the pipe fittings 7, with an interval of 180°. The two cutting knives 10 advance simultaneously when cutting the pipe fittings 7, which is more efficient.

[0051] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A cutting tool, characterized in that: include: A fixed frame, a cutting part (11), an electrostatic release clamp and a wire (12) and a gas detection part (14); The cutting part (11) is arranged in the middle of the fixed frame and contacts the pipe (7) fixed on the fixed frame. The static electricity release clamp and the wire (12) for releasing static electricity are arranged at one end of the fixed frame. The other end of the fixed frame is provided with a gas detection part (14) for detecting flammable and harmful gases.

2. A cutting tool according to claim 1, characterized in that: The fixed frame comprises: a first fixed frame (1), a second fixed frame (2) and a fastener (3); the first fixed frame (1) and the second fixed frame (2) are both annular fixed frames, the pipe (7) is axially arranged on the first fixed frame (1) and the second fixed frame (2), the fastener (3) is radially evenly distributed on the first fixed frame (1) and the second fixed frame (2), the cutting part (11) is arranged between the first fixed frame (1) and the second fixed frame (2), and is relatively rotatably connected, the electrostatic release clamp and the wire (12) are arranged at the bottom end of the second fixed frame (2), and the gas detection part (14) is arranged at the upper end of the first fixed frame (1).

3. A cutting tool according to claim 2, characterized in that: There are two or more fasteners (3), and one end of the fastener (3) close to the center of the first fixed frame (1) and the second fixed frame (2) is a fixed end (5), and the other end is a first operating handle (4).

4. A cutting tool according to claim 2, characterized in that: The first fixed frame (1) and the second fixed frame (2) are uniformly provided with threaded through holes (15) in the circumferential direction, and the fasteners (3) are arranged on the first fixed frame (1) and the second fixed frame (2) through the threaded through holes (15) and are fixedly connected by threads.

5. A cutting tool according to claim 1, characterized in that: The cutting part (11) comprises: a moving ring (9) and a cutting knife (10); the moving ring (9) is slidably arranged on the first fixed frame (1) and the second fixed frame (2) and is located between the two; the cutting knife (10) is vertically fixed on the moving ring (9) and contacts the pipe (7).

6. A cutting tool according to claim 5, characterized in that: The cutting knife (10) is fixedly connected to the moving ring (9) via a thread (8); the cutting knife (10) has a rotatable circular cutting knife, and a second operating handle (6) is provided at one end of the handle; the outer sliding sleeve of the second operating handle (6) is provided with an anti-slip handle.

7. A cutting tool according to claim 5, characterized in that: The first fixed frame (1) and the second fixed frame (2) are provided with grooves for arranging the moving ring (9), and the two ends of the moving ring (9) are slidably arranged in the grooves of the first fixed frame (1) and the second fixed frame (2), respectively.

8. A cutting tool according to claim 7, characterized in that: Grease or lubricating oil is injected into the groove.

9. A cutting tool according to claim 2, characterized in that: The electrostatic release clamp and the wire (12) are arranged in a hollow cavity (13) on the second fixed frame (2).

10. A cutting tool according to claim 2, characterized in that: The gas detection part (14) is close to the cutting part (11), the gas detection part (14) is a gas passage facing the cutting opening, and the side of the gas detection part (14) facing the operator is a display screen.

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