CN116021084B - Protection cutting device for support parts - Google Patents
Protection cutting device for support parts Download PDFInfo
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- CN116021084B CN116021084B CN202310121020.3A CN202310121020A CN116021084B CN 116021084 B CN116021084 B CN 116021084B CN 202310121020 A CN202310121020 A CN 202310121020A CN 116021084 B CN116021084 B CN 116021084B
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- fixedly connected
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- cutting
- lap joint
- joint ring
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to the field of cutting equipment, and provides a protective cutting device for bracket parts, which comprises a connecting frame, a shell and the like; a shell is fixedly connected inside the connecting frame; the method is characterized in that: the flue gas extraction device also comprises a lap joint ring and a flue gas extraction mechanism; the left side of the shell is fixedly connected with a lap joint ring; the limiting pull rod is screwed on the lap joint ring; the lap joint ring is connected with a smoke extraction mechanism for intensively processing smoke generated by cutting. The invention is improved based on the existing handheld cutting device, the cutting piece is pre-positioned by the expansion and contraction of the binding belt, meanwhile, the problem of large shaking amount of handheld cutting is compensated, staff does not need to spend larger force to control shaking, the stability during cutting is improved, and generated gas is timely discharged and purified in the cutting process, so that the cutting position can keep clear visibility; emergency protection is carried out on the condition of the clamping knife, and the splashed scraps are blocked by utilizing the rotary protection plate, so that the workers are prevented from being hurt by the scraps.
Description
Technical Field
The invention relates to the field of cutting equipment, in particular to a protective cutting device for bracket parts.
Background
When the fixed support is installed, in order to reduce the waste of materials, the support can be welded in advance, the end part of a part of the support is exposed out of the support installation range, at the moment, the redundant part of the support needs to be cut, but the support is in a suspended state after being installed, and a handheld cutting device needs to be utilized.
The existing handheld cutting device has no any protection structure, accurate cutter feeding cannot be achieved in the cutting process, the edge of the support is cut to have defects, the edge is difficult to achieve flatness, meanwhile, operators need to independently align cutters with two hands, so that the cutters can shake when contacting the support, the operators cannot reduce shake well, the operators can hurt the operators easily when the shake is overlarge, safety is not guaranteed, cutter clamping phenomenon can occur in the cutting process, the existing equipment does not protect cutter lifting processes after cutter clamping, and safety coefficient is low.
Disclosure of Invention
In order to overcome the defects of no protection structure, low cutting stability and low safety coefficient of the existing handheld cutting device, the invention provides the protection cutting device for the bracket parts.
The technical implementation scheme of the invention is as follows: a protection cutting device for bracket parts comprises a handle, a connecting frame, an auxiliary grip, a shell, a servo motor and a blade; a connecting frame is fixedly connected on the handle; an auxiliary handle is fixedly connected on the connecting frame; a shell is fixedly connected inside the connecting frame; a servo motor is fixedly connected inside the shell; the output shaft of the servo motor is connected with a detachable blade; the smoke gas extraction device also comprises a lap joint ring, a limiting pull rod, a smoke gas extraction mechanism, a locking mechanism and an adaptive protection mechanism; the left side of the shell is fixedly connected with a lap joint ring; the left part of the shell is rotationally connected with a limit pull rod; the limiting pull rod is screwed on the lap joint ring; the lap joint ring is connected with a smoke extraction mechanism for intensively processing smoke generated by cutting; the limiting pull rod is used for limiting the smoke extraction mechanism; the flue gas extraction mechanism is provided with a locking mechanism for preventing sputtering; the smoke evacuation mechanism is connected with an adaptive protection mechanism for emergency protection.
Further, the outer surface of the handle is provided with an anti-skid groove.
Further, the smoke extraction mechanism comprises a protective cover, a fan, a gas pipe, a catcher and a filter screen; the inner part of the lap joint ring is rotationally connected with a protective cover; a fan is arranged at the front part of the protective cover; the connecting frame is fixedly connected with a catcher; a filter screen is arranged in the catcher; the protection cover is communicated with the catcher by means of a gas pipe.
Further, the filter screen is of a multilayer hole-shaped structure.
Further, the locking mechanism comprises a lapping plate, an electric retractable wheel, a movable rod, a fixed rod, a binding belt, a spring rod and a traction structure; the lateral part of the protective cover is fixedly connected with a lapping plate; an electric retractable wheel is arranged on the lapping plate; the left side of the protective cover is provided with a chute, and the movable rod slides in the chute; a sliding groove is formed in the lapping plate, and the moving rod slides in the sliding groove; a spring rod is arranged in each of the two sliding grooves; a fixed rod is fixedly connected to the front side of the interior of the lapping plate, and the fixed rod is positioned right in front of the moving rod; the electric winding and unwinding wheel is wound with a binding belt; the end of the binding belt passes over the fixed rod and is clamped by the movable rod and the fixed rod; the rear side of the lapping plate is connected with a traction structure.
Further, the traction structure comprises traction wheels, a support frame and a power motor; two traction wheels are rotationally connected to the lapping plate; the outer surface of the lapping plate is fixedly connected with a supporting frame; the support frame is rotationally connected with two traction wheels; a power motor is fixedly connected on the support frame; the output shaft of the power motor is fixedly connected with a traction wheel; the two traction wheels are driven by a flat gear.
Further, the outer surface of the traction wheel is a rough surface.
Further, the adaptive protection mechanism comprises an arc-shaped guide rod, a straight spring, a limiting block and a protection plate; the upper part of the protective cover is fixedly connected with two arc-shaped guide rods; each arc-shaped guide rod is fixedly connected with a straight spring; each straight spring is fixedly connected with a limiting block; each limiting block is correspondingly connected with an arc-shaped guide rod in a sliding manner; the two limiting blocks are fixedly connected with the same protecting plate.
Further, the end of the protection plate is semi-cylindrical.
Further, the device also comprises a supporting plate and a clamping rod; a supporting plate is fixedly connected on each of the protective cover and the lapping plate; each supporting plate is respectively connected with a detachable clamping rod which is used for supporting the limiting block, and the straight springs are in a compressed state.
The invention has the following advantages: the invention is improved based on the existing handheld cutting device, the cutting piece is pre-positioned by the expansion and contraction of the binding belt, meanwhile, the problem of large shaking amount of handheld cutting is compensated, staff does not need to spend larger force to control shaking, the stability during cutting is improved, and generated gas is timely discharged and purified in the cutting process, so that the cutting position can keep clear visibility; emergency protection is carried out on the condition of the clamping knife, and the splashed scraps are blocked by utilizing the rotary protection plate, so that the workers are prevented from being hurt by the scraps.
Drawings
FIG. 1 is a schematic perspective view of a first view angle of the present invention;
FIG. 2 is a schematic perspective view of a second view angle of the present invention;
FIG. 3 is a structural cross-sectional view of the housing of the present invention;
FIG. 4 is a schematic view of the relationship between the blade and the protective cover according to the present invention;
FIG. 5 is a schematic view showing the positional relationship between the protective cover and the arc-shaped guide rod, the straight spring and the limiting block;
FIG. 6 is an enlarged schematic view of the travel bar and spring bar of FIG. 5 in accordance with the present invention;
FIG. 7 is a schematic view showing the internal structure of the protective cover at a first view angle according to the present invention;
FIG. 8 is a schematic view showing the internal structure of the protective cover at a second view angle according to the present invention;
FIG. 9 is a cutting operation state diagram of the present invention;
fig. 10 is an enlarged cross-sectional view of the support stand of fig. 9 in accordance with the present invention.
Meaning of reference numerals in the drawings: 1-handle, 2-connecting frame, 3-auxiliary handle, 4-shell, 41-lap joint ring, 42-limit pull rod, 5-servo motor, 6-blade, 7-protection cover, 8-fan, 9-gas pipe, 10-catcher, 11-filter screen, 12-lap joint plate, 13-electric retractable wheel, 14-movable rod, 15-fixed rod, 16-bandage, 171-traction wheel, 172-support frame, 173-power motor, 18-spring rod, 19-arc guide rod, 20-straight spring, 21-limit block, 22-protection plate, 23-support plate, 24-clamping rod and 001-support.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a protective cutting device for bracket parts, which is shown in figures 1-10 and comprises a handle 1, a connecting frame 2, an auxiliary grip 3, a shell 4, a servo motor 5 and a blade 6; the handle 1 is connected with a connecting frame 2 through bolts; an auxiliary handle 3 is fixedly connected on the connecting frame 2; the inside of the connecting frame 2 is fixedly connected with a shell 4; a servo motor 5 is fixedly connected inside the shell 4; the output shaft of the servo motor 5 is connected with a detachable and replaceable blade 6;
the smoke gas extraction device also comprises a lap joint ring 41, a limit pull rod 42, a smoke gas extraction mechanism, a locking mechanism and an adaptive protection mechanism; the left side of the shell 4 is fixedly connected with a lap joint ring 41; the left part of the shell 4 is rotatably connected with a limiting pull rod 42; the limiting pull rod 42 is screwed on the lap joint ring 41; the lap joint ring 41 is connected with a smoke extraction mechanism; the limiting pull rod 42 is used for limiting the smoke extraction mechanism; the flue gas extraction mechanism is provided with a locking mechanism; the smoke extraction mechanism is connected with an adaptive protection mechanism.
The outer surface of the handle 1 is provided with an anti-skid groove.
The smoke extraction mechanism comprises a protective cover 7, a fan 8, a gas pipe 9, a catcher 10 and a filter screen 11; the lap joint ring 41 is internally and rotatably connected with a protective cover 7; a fan 8 is arranged at the front part of the protective cover 7; the catcher 10 is fixedly connected on the connecting frame 2; the catcher 10 is internally provided with a filter screen 11; the protection cover 7 and the catcher 10 are communicated by means of a gas pipe 9.
The filter screen 11 has a multi-layer porous structure.
The locking mechanism comprises a lapping plate 12, an electric retractable wheel 13, a movable rod 14, a fixed rod 15, a binding belt 16, a spring rod 18 and a traction structure; the lateral part of the protective cover 7 is fixedly connected with a lapping plate 12; an electric retractable wheel 13 is arranged on the lapping plate 12; a sliding groove is formed in the left side of the protective cover 7, and a moving rod 14 slides in the sliding groove; the lapping plate 12 is provided with a chute, and the moving rod 14 slides in the chute; a spring rod 18 is arranged in each of the two sliding grooves; a fixed rod 15 is fixedly connected to the front side of the interior of the lapping plate 12, and the fixed rod 15 is positioned right in front of the movable rod 14; the electric winding and unwinding wheel 13 is wound with a binding belt 16; the end of the strap 16 passes over the fixed rod 15 and is clamped by the moving rod 14 and the fixed rod 15; a traction structure is connected to the rear side of the splice plate 12.
The traction structure comprises traction wheels 171, a support frame 172 and a power motor 173; two traction wheels 171 are rotatably connected to the lap plate 12; the outer surface of the lapping plate 12 is fixedly connected with a supporting frame 172; the support frame 172 is rotatably connected with two traction wheels 171; the support frame 172 is fixedly connected with a power motor 173; the output shaft of the power motor 173 is fixedly connected with a traction wheel 171; the two traction wheels 171 are driven by flat gears.
The traction wheel 171 has a roughened surface on its outer surface for increasing contact friction against the strap 16.
The adaptive protection mechanism comprises an arc-shaped guide rod 19, a straight spring 20, a limiting block 21 and a protection plate 22; the upper part of the protective cover 7 is fixedly connected with two arc-shaped guide rods 19; each arc-shaped guide rod 19 is fixedly connected with a straight spring 20; each straight spring 20 is fixedly connected with a limiting block 21; each limiting block 21 is correspondingly and slidably connected with an arc-shaped guide rod 19; the two limiting blocks 21 are fixedly connected with the same protecting plate 22.
The end of protective plate 22 is semi-cylindrical.
Also comprises a supporting plate 23 and a clamping rod 24; each bolt on the protective cover 7 and the lapping plate 12 is connected with a supporting plate 23; each supporting plate 23 is connected with a detachable clamping rod 24, the clamping rods 24 are used for supporting the limiting blocks 21, and the straight springs 20 are in a compressed state.
When using the bracket component to protect the cutting device, hereinafter referred to as the cutting device, the operator holds the handle 1 to pick up the whole cutting device, performs an outdoor high-altitude cutting operation and a cutting operation with great difficulty in fixing, as shown in fig. 9, the operator holds the moving rod 14 by hand, then controls the moving rod 14 to move forward, compresses the two spring rods 18, then holds the free end of the strap 16 by the other hand, pulls down through between the moving rod 14 and the fixing rod 15, moves the strap 16 out by a length sufficient to extend the free end of the strap 16 between the two traction wheels 171, then releases the moving rod 14, moves back and resets the strap 16 under the action of the two spring rods 18, clamps the strap 16 together with the fixing rod 15 to avoid the cluttered movement of the strap 16, then bypasses the strap 16 from the lower end of the bracket 001, then passes through the space between the two traction wheels 171 from the lower part of the two traction wheels 171, and then controls the power motor 173 to operate, the power motor 173 drives the front traction wheel 171 to rotate anticlockwise under the view angle from left to right, because the transmission of the two traction wheels 171 is based on mutually meshed flat gears, the directions of rotation of the two traction wheels 171 are opposite, thereby driving the free ends of the binding belts 16 to move upwards and tightening the binding belts 16, in the process, the electric retracting wheel 13 also rotates clockwise under the view angle from left to right, the fixed ends of the binding belts 16 are driven to wind up and tighten the binding belts 16, so that under the cooperation of the binding belts 16, the worker uses the blade 6 to align the position of the cutting line, the binding belts 16 are stably locked to the normal and non-processed parts of the bracket 001, the worker can accurately position the position of the cutting line when the blade 6 is positioned above the cutting line, the servo motor 5 is started by a worker, the output shaft of the servo motor 5 drives the blade 6 to rotate at a high speed, at the moment, the worker can put one hand on the auxiliary grip 3, simultaneously, the limit pull rod 42 is turned around, the limit pull rod 42 moves towards the direction away from the center of the lap ring 41, so that the limit pull rod 42 and the protective cover 7 are not mutually contacted, the clamping locking of the protective cover 7 is released, the protective cover 7 can freely rotate in the lap ring 41, at the moment, the electric retractable wheel 13 and the power motor 173 tighten the binding belt 16 at a set speed, the worker is matched for cutting operation, when the blade 6 touches the redundant part of the bracket 001, the shake generated by the binding belt 16 is compensated, the worker does not need to spend larger force to control the shake, the safety and the stability are improved, the worker can repeatedly lift the handle 1 continuously in the cutting process, under the locking action of the binding belt 16, the protection cover 7 is stabilized on the support 001, because the limit pull rod 42 is no longer clamped and locks the protection cover 7, and free rotation can be realized between the shell 4 and the protection cover 7, so that a worker can freely adjust the cutting posture by utilizing the cooperation of the handle 1 and the auxiliary grip 3, for example, the worker can hold the handle 1 in a state that the handle 1 is horizontal at first, after uncomfortable feeling, based on the principle that the shell 4 can realize free rotation between the shell 4 and the protection cover 7, the handle 1 can be directly rotated to a vertical state or other angles under the state that the cutter blade 6 can cut the support 001 without retracting a cutter blade, the holding posture of the worker is changed, arm muscle ache is reduced, the force of the worker is adapted to be carried out by cooperation with the contraction of the binding belt 16, and the cutting depth of the cutter blade 6 allows complete cutting in a single direction; in the course of the cutting process, the fan 8 operates simultaneously, and the fan 8 draws the flue gas that produces when blade 6 cutting, guides the flue gas in same direction, contains a large amount of metal particle matter in the flue gas, and the staff inhales too much and can cause huge harm to the health, and the production of flue gas can influence the view of cutting simultaneously, and the staff judges inaccurately, can't realize accurate cutting, and the flue gas enters into gas-supply pipe 9 from safety cover 7, then enters into in the trapper 10, and the inside filter screen 11 of trapper 10 filters the flue gas, gets rid of a large amount of metal particle matter, maintains good cutting environment.
When the cutting process is interrupted, the clamping rods 24 on the two supporting plates 23 are completely pulled away immediately, under the action of the two straight springs 20, the two limiting blocks 21 drive the protecting plates 22 to rotate circumferentially, the protecting plates 22 are protected against the side of workers in a closed mode, the cutter lifting operation is needed, the power motor 173 is controlled to rotate reversely, the workers hold the handle 1 and the auxiliary handle 3 at the moment, the cutting device is lifted upwards in a matched mode, in the process, the high-speed rotation of the blades 6 is kept, a large amount of scraps can be accumulated in the clamping area, when the blades 6 are separated, the scraps can splash, and therefore the protecting plates 22 shield the scraps well, and the workers are prevented from being damaged by the scraps.
After cutting, the binding belt 16 is retracted by the electric retractable wheel 13, and the two spring rods 18 support the movable rod 14, so that the movable rod 14 forms stable pressure on the binding belt 16, and the winding quality of the electric retractable wheel 13 is ensured.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted equally without departing from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. The protection cutting device for the bracket parts comprises a handle (1), a connecting frame (2), an auxiliary grip (3), a shell (4), a servo motor (5) and a blade (6); a connecting frame (2) is fixedly connected on the handle (1); an auxiliary handle (3) is fixedly connected on the connecting frame (2); a shell (4) is fixedly connected inside the connecting frame (2); a servo motor (5) is fixedly connected in the shell (4); the output shaft of the servo motor (5) is connected with a detachable and replaceable blade (6);
the method is characterized in that: the smoke gas extraction device also comprises a lap joint ring (41), a limit pull rod (42), a smoke gas extraction mechanism, a locking mechanism and an adaptive protection mechanism; the left side of the shell (4) is fixedly connected with a lap joint ring (41); the left part of the shell (4) is rotationally connected with a limit pull rod (42); the limiting pull rod (42) is screwed on the lap joint ring (41); the lap joint ring (41) is connected with a smoke extraction mechanism for intensively processing smoke generated by cutting; the limiting pull rod (42) is used for limiting the smoke extraction mechanism; the flue gas extraction mechanism is provided with a locking mechanism for preventing sputtering; the smoke extraction mechanism is connected with an adaptive protection mechanism for emergency protection;
the smoke extraction mechanism comprises a protective cover (7), a fan (8), a gas pipe (9), a catcher (10) and a filter screen (11); the inside of the lap joint ring (41) is rotationally connected with a protective cover (7), and a convex ring is arranged on the side, close to the lap joint ring (41), of the protective cover (7), and the convex ring is matched with the lap joint ring (41) to realize rotation; a fan (8) is arranged at the front part of the protective cover (7); a catcher (10) is fixedly connected on the connecting frame (2); a filter screen (11) is arranged in the catcher (10); the protection cover (7) is communicated with the catcher (10) by means of a gas pipe (9);
the locking mechanism comprises a lapping plate (12), an electric retractable wheel (13), a movable rod (14), a fixed rod (15), a binding belt (16), a spring rod (18) and a traction structure; the lateral part of the protective cover (7) is fixedly connected with a lapping plate (12); an electric retractable wheel (13) is arranged on the lapping plate (12); a sliding groove is formed in the left side of the protective cover (7), and a moving rod (14) slides in the sliding groove; a sliding groove is formed in the lapping plate (12), and a moving rod (14) slides in the sliding groove; a spring rod (18) is arranged in each of the two sliding grooves; a fixed rod (15) is fixedly connected to the front side of the interior of the lapping plate (12), and the fixed rod (15) is positioned right in front of the movable rod (14); a binding belt (16) is wound on the electric winding and unwinding wheel (13); the end of the binding band (16) passes over the fixed rod (15) and is clamped by the movable rod (14) and the fixed rod (15); the rear side of the lapping plate (12) is connected with a traction structure;
the adaptive protection mechanism comprises an arc-shaped guide rod (19), a straight spring (20), a limiting block (21) and a protection plate (22); the upper part of the protective cover (7) is fixedly connected with two arc-shaped guide rods (19); each arc-shaped guide rod (19) is fixedly connected with a straight spring (20); each straight spring (20) is fixedly connected with a limiting block (21); each limiting block (21) is correspondingly connected with an arc-shaped guide rod (19) in a sliding manner; the two limiting blocks (21) are fixedly connected with the same protecting plate (22).
2. The protective cutting device for a bracket component according to claim 1, wherein: the outer surface of the handle (1) is provided with an anti-skid groove.
3. The protective cutting device for a bracket component according to claim 1, wherein: the filter screen (11) is of a multi-layer hole-shaped structure.
4. A protective cutting device for a bracket component according to claim 3, characterized in that:
the traction structure comprises a traction wheel (171), a support frame (172) and a power motor (173); two traction wheels (171) are rotatably connected to the lapping plate (12); the outer surface of the lapping plate (12) is fixedly connected with a supporting frame (172); the support frame (172) is rotationally connected with two traction wheels (171); a power motor (173) is fixedly connected on the support frame (172); the output shaft of the power motor (173) is fixedly connected with a traction wheel (171); the two traction wheels (171) are driven by flat gears.
5. The protective cutting device for a bracket component according to claim 4, wherein: the outer surface of the traction wheel (171) is a rough surface.
6. The protective cutting device for a bracket component according to claim 5, wherein: the end of the protection plate (22) is semi-cylindrical.
7. The protective cutting device for a bracket component according to claim 6, wherein: the device also comprises a supporting plate (23) and a clamping rod (24); a supporting plate (23) is fixedly connected on each of the protective cover (7) and the lapping plate (12); each supporting plate (23) is connected with a detachable clamping rod (24), the clamping rods (24) are used for supporting the limiting blocks (21), and the straight springs (20) are in a compressed state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310121020.3A CN116021084B (en) | 2023-02-16 | 2023-02-16 | Protection cutting device for support parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310121020.3A CN116021084B (en) | 2023-02-16 | 2023-02-16 | Protection cutting device for support parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116021084A CN116021084A (en) | 2023-04-28 |
| CN116021084B true CN116021084B (en) | 2023-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310121020.3A Active CN116021084B (en) | 2023-02-16 | 2023-02-16 | Protection cutting device for support parts |
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| CN (1) | CN116021084B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29803006U1 (en) * | 1998-02-20 | 1999-06-24 | Powertools International Gmbh | Separator |
| CN101505899A (en) * | 2006-07-13 | 2009-08-12 | 创科实业有限公司 | Portable power tool for cutting concrete board and other substrates |
| CN207154858U (en) * | 2017-07-14 | 2018-03-30 | 新昌县城南乡量新机械厂 | A kind of portable metal cutter convenient for collecting |
| CN112122676B (en) * | 2020-09-17 | 2021-09-07 | 江西吉事达厨房用品有限公司 | Aluminum alloy ex-trusions cutting process protection architecture |
| CN113681070B (en) * | 2021-10-27 | 2021-12-31 | 江苏振乾机电科技有限公司 | Portable pneumatic cutting machine |
| CN113815134A (en) * | 2021-11-03 | 2021-12-21 | 张瑜琴 | Wall cutting device for construction |
| CN216263825U (en) * | 2021-12-06 | 2022-04-12 | 广东助建管道科技有限公司 | Water-saving semi-automatic cutting machine for prefabricating and processing pipeline |
| CN218224849U (en) * | 2022-05-31 | 2023-01-06 | 大冶远东特殊钢有限公司 | Steel cutting device with safety arrangement |
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