阅读说明：本技术 一种手持式风管环切装置 (Hand-held type tuber pipe circular cutting device ) 是由 林波 许修亮 卓文泽 谢文博 叶浩 于 2021-08-10 设计创作，主要内容包括：本发明公开了一种手持式风管环切装置,包括：便携式等离子切割机,包括主机、割枪套件和导线；环切机构,包括支撑架和滚轮组件,滚轮组件包括相对设置的两个滚轮；以及支撑组件。此手持式风管环切装置,通过支撑组件支撑风管,便携式等离子切割机便于携带,在风管上画出环切线,手动操作环切机构,根据环切线的位置放置滚轮组件,其中一个滚轮与风管的内侧表面接触,另一个与风管的外侧表面接触,进而夹持风管,工作人员手持带动支撑架动作,由于滚轮组件的作用,可以很轻松地沿风管做圆周运动,带动割枪套件环切风管,便于携带和操作,能够在一定程度上降低使用者的技术要求,并且适用于不同直径的圆形风管,此发明用于风管生产制造技术领域。(The invention discloses a hand-held air duct ring cutting device, which comprises: the portable plasma cutting machine comprises a main machine, a cutting gun kit and a wire; the circular cutting mechanism comprises a support frame and a roller assembly, wherein the roller assembly comprises two rollers which are oppositely arranged; and a support assembly. The handheld air pipe circular cutting device is used for the technical field of air pipe production and manufacturing, and is convenient to carry and operate.)

1. A hand-held type tuber pipe ring cuts device which characterized in that includes:

the portable plasma cutting machine comprises a host machine, a cutting gun external member and a lead, wherein the lead is electrically connected with the host machine and the cutting gun external member, and the cutting gun external member is used for cutting an air pipe;

the circular cutting mechanism comprises a support frame and at least one group of roller assemblies arranged on the support frame, the cutting gun suite is movably or fixedly connected with the support frame, each roller assembly comprises two rollers which are oppositely arranged, and the two rollers are used for clamping the circumferential surface of the air pipe to do circular motion along the air pipe so as to drive the cutting gun suite to circularly cut the air pipe; one of the rollers is used for contacting with the outer side surface of the air pipe, and the other roller is used for contacting with the inner side surface of the air pipe; and

at least one support assembly for supporting the air duct.

2. The hand-held air hose ring-cutting device of claim 1, wherein: the supporting frame comprises a vertical member, a first transverse member and a second transverse member which are oppositely arranged at intervals, wherein one end of the vertical member is connected with the first transverse member, and the other end of the vertical member is connected with the second transverse member to form a U-shaped structure; one of the rollers is mounted on the inside of the first cross member and the other roller is mounted on the inside of the second cross member such that the rollers are spaced apart.

3. The hand-held air hose ring-cutting device of claim 1, wherein: the roller and the supporting frame are provided with a connecting part therebetween, the connecting part comprises an elastic piece, and the elastic piece is used for providing acting force for enabling the roller to contact and attach with the air pipe.

4. The hand-held air hose ring-cutting device of claim 3, wherein: the connecting component further comprises a sliding seat, the elastic piece is arranged between the sliding seat and the roller, and the sliding seat is connected with the supporting frame in a sliding mode and used for adjusting the position of the roller in a sliding mode.

5. The hand-held air hose ring-cutting device of claim 4, wherein: the connecting part further comprises a screw and a nut, a rotating shaft penetrates through the roller, one end of the screw is fixedly connected or rotatably connected with the rotating shaft, the other end of the screw penetrates through the sliding seat and is matched with the nut, and the compression amount of the elastic part is adjusted by screwing the nut.

6. The hand-held air hose ring-cutting device of claim 1, wherein: the cutting torch external member is connected with a connecting member, and the cutting torch external member is rotatably connected with the supporting frame through the connecting member.

7. The hand-held air hose ring-cutting device of claim 6, wherein: hand-held type tuber pipe circular cutting device still includes the dust catcher, the dust catcher is used for absorbing the sweeps that burning torch external member cutting tuber pipe produced, the dust catcher includes suction head, first pipeline and vacuum device, the suction head rotationally sets up connecting elements is last and orientation the work end of burning torch external member, first pipe connection the suction head with vacuum device.

8. The hand-held air hose ring-cutting device of claim 1, wherein: the circular cutting mechanism further comprises a handle, the handle is fixedly connected with the supporting frame, the handle is used for holding and operating by workers, and then the circular cutting mechanism is driven to do circular motion along the air pipe.

9. The hand-held air hose ring-cutting device of claim 8, wherein: the handle with the inside of support frame has the threading passageway of intercommunication each other, the wire passes in proper order the handle with the threading passageway of support frame with the burning torch external member is connected.

10. The hand-held ductwork ring-cutting apparatus according to any one of claims 1 to 9, wherein: the support assembly comprises a support and a base, the support is Y-shaped, the support can be lifted and lowered and arranged on the base to adjust and support the height position of the air pipe on the support, and the support assembly further comprises a driving mechanism used for driving the support to move up and down.

Technical Field

The invention relates to the technical field of air pipe production and manufacturing, in particular to a handheld air pipe circular cutting device.

Background

The circular air pipe has the characteristics of attractive appearance, high ventilation efficiency, low noise and the like, and is a common air pipe form in large places such as airports, gymnasiums, markets and the like. The preparation of circular tuber pipe, the galvanized steel sheet of accessible rectangle is rolled up and is made, also can adopt the galvanized steel strip of bar to roll up, however, no matter what kind of manufacture craft is adopted, circular tuber pipe inevitably need carry out the ring-cut in preparation and installation, also need cut out the unnecessary length of circular tuber pipe through the annular cutting promptly to accomplish the butt joint installation of tuber pipe smoothly.

In the related art, a table-type plasma cutting machine or a handheld angle grinder is generally used for circular cutting of the air duct, and the two methods have many disadvantages, such as: the primary cutting of the circular air pipe can be finished by adopting the table type plasma cutting machine, but the table type plasma cutting machine is inconvenient to move, secondary adjustment is difficult to carry out on the air pipe which is already cut, and particularly for the air pipe which is already conveyed to an installation site, the table type plasma cutting machine cannot realize rapid cutting; hand-held type angle mill has certain convenience to cutting small-size tuber pipe, but then has lost its flexibility to the large-scale tuber pipe that the diameter exceeds 1m, inconvenient operation to because the angle mill user has proposed higher technical requirement, make the safe risk that adopts the large-scale tuber pipe of angle mill cutting steep rise.

Disclosure of Invention

The invention aims to solve at least one of the technical problems in the prior art, and provides a handheld air duct circular cutting device which is suitable for circular air ducts with different diameters, is convenient to operate and reduces the technical requirements of users.

According to an embodiment of the first aspect of the present invention, there is provided a handheld air duct circular cutting device, including:

the portable plasma cutting machine comprises a host machine, a cutting gun external member and a lead, wherein the lead is electrically connected with the host machine and the cutting gun external member, and the cutting gun external member is used for cutting an air pipe;

the circular cutting mechanism comprises a support frame and at least one group of roller assemblies arranged on the support frame, the cutting gun suite is movably or fixedly connected with the support frame, each roller assembly comprises two rollers which are oppositely arranged, and the two rollers are used for clamping the circumferential surface of the air pipe to do circular motion along the air pipe so as to drive the cutting gun suite to circularly cut the air pipe; one of the rollers is used for contacting with the outer side surface of the air pipe, and the other roller is used for contacting with the inner side surface of the air pipe; and

at least one support assembly for supporting the air duct.

The handheld air pipe circular cutting device at least has the following beneficial effects: support the tuber pipe through supporting component, portable plasma cutting machine portable, can be used to the tuber pipe cutting of installation scene, draw the girdling line on the tuber pipe, manual operation girdling mechanism, place roller components according to the position of girdling line, the inboard surface contact of one of them gyro wheel and tuber pipe, another and the outside surface contact of tuber pipe, and then the centre gripping tuber pipe, the position of location support frame and burning torch external member, the handheld drive support frame action of staff, because roller components's effect, can be very easily along the tuber pipe circular motion, drive burning torch external member girdling tuber pipe, compare with current desk-top plasma cutting machine and hand-held type angle grinder, portable and operation, can reduce user's technical requirement to a certain extent, and be applicable to the circular tuber pipe of different diameters.

According to the handheld air duct circular cutting device provided by the embodiment of the first aspect of the invention, the supporting frame comprises a vertical member, a first transverse member and a second transverse member which are arranged oppositely at intervals, one end of the vertical member is connected with the first transverse member, and the other end of the vertical member is connected with the second transverse member to form a U-shaped structure; one of the rollers is mounted on the inside of the first cross member and the other roller is mounted on the inside of the second cross member such that the rollers are spaced apart.

According to the handheld air duct circular cutting device provided by the embodiment of the first aspect of the invention, a connecting part is arranged between the roller and the support frame, and the connecting part comprises an elastic part which is used for providing acting force for enabling the roller to contact and attach with an air duct.

According to the handheld air duct circular cutting device provided by the embodiment of the first aspect of the invention, the connecting part further comprises a sliding seat, the elastic part is arranged between the sliding seat and the roller, and the sliding seat is slidably connected with the supporting frame and used for slidably adjusting the position of the roller.

According to the handheld air duct circular cutting device provided by the embodiment of the first aspect of the invention, the connecting part further comprises a screw and a nut, a rotating shaft is arranged through the roller, one end of the screw is fixedly or rotatably connected with the rotating shaft, the other end of the screw passes through the sliding seat to be matched with the nut, and the compression amount of the elastic part is adjusted by screwing the nut.

According to the handheld air duct circular cutting device provided by the embodiment of the first aspect of the invention, the cutting torch suite is connected with the connecting member, and the cutting torch suite is rotatably connected with the supporting frame through the connecting member.

According to the handheld air duct ring-cutting device provided by the embodiment of the first aspect of the invention, the handheld air duct ring-cutting device further comprises a dust collector, the dust collector is used for collecting waste scraps generated by the cutting of the air duct by the cutting gun kit, the dust collector comprises a suction head, a first pipeline and a negative pressure device, the suction head is rotatably arranged on the connecting component and faces to the working end of the cutting gun kit, and the first pipeline is connected with the suction head and the negative pressure device.

According to the handheld air pipe circular cutting device provided by the embodiment of the first aspect of the invention, the circular cutting mechanism further comprises a handle, the handle is fixedly connected with the support frame, and the handle is used for being held and operated by a worker to further drive the circular cutting mechanism to do circular motion along the air pipe.

According to the handheld air duct circular cutting device disclosed by the embodiment of the first aspect of the invention, the handle and the support frame are internally provided with threading channels which are communicated with each other, and the lead sequentially passes through the threading channels of the handle and the support frame to be connected with the cutting gun suite.

According to the handheld air duct circular cutting device provided by the embodiment of the first aspect of the invention, the supporting assembly comprises a support and a base, the support is Y-shaped, the support can be arranged on the base in a lifting mode and used for adjusting the height position of an air duct supported on the support, and the supporting assembly further comprises a driving mechanism used for driving the support to move in the lifting mode.

Drawings

The invention is further described below with reference to the accompanying drawings and examples;

FIG. 1 is a schematic structural diagram of a handheld air duct circular cutting device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a ring cutting mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic view showing the structure of a roller and a connecting member according to an embodiment of the present invention;

reference numerals: the portable plasma cutting machine comprises a portable plasma cutting machine 100, a main machine 110, a cutting gun kit 120, a wire 130, a circular cutting mechanism 200, a support frame 210, a vertical member 211, a first transverse member 212, a second transverse member 213, a connecting member 214, a handle 215, a connecting end 2151, a holding end 2152, a roller assembly 220, a roller 221, a connecting part 222, an elastic part 2221, a sliding seat 2222, a screw 2223, a nut 2224, a rotating shaft 2225, a roller seat 2226, a support assembly 300, a bracket 310, a base 320, a dust collector 400, a suction head 410, a first pipeline 420 and a negative pressure device 430.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 3, an embodiment of the present invention provides a handheld air duct ring cutting device, including a portable plasma cutting machine 100, a ring cutting mechanism 200, and at least one support assembly 300, wherein the portable plasma cutting machine 100 includes a main machine 110, a cutting gun kit 120, and a lead 130, the lead 130 electrically connects the main machine 110 and the cutting gun kit 120, and the cutting gun kit 120 is used for cutting an air duct; the circular cutting mechanism 200 comprises a support frame 210 and at least one group of roller assemblies 220 arranged on the support frame 210, the cutting torch assembly 120 is movably or fixedly connected with the support frame 210, each roller assembly 220 comprises two rollers 221 which are oppositely arranged, and the two rollers 221 are used for clamping the circumferential surface of the air pipe to do circular motion along the air pipe so as to drive the cutting torch assembly 120 to circularly cut the air pipe; one of the rollers 221 is used for contacting with the outer side surface of the air duct, and the other roller 221 is used for contacting with the inner side surface of the air duct; the support assembly 300 is used to support the air duct.

The handheld air duct circular cutting device of the embodiment supports an air duct through the supporting component 300, the portable plasma cutting machine 100 is portable and can be used for cutting the air duct on an installation site, a circular tangent line is drawn on the air duct, the circular cutting mechanism 200 is manually operated, the roller component 220 is placed according to the position of the circular tangent line, one roller 221 is in contact with the inner side surface of the air duct, the other roller is in contact with the outer side surface of the air duct, so as to clamp the air duct, the positions of the supporting frame 210 and the cutting gun kit 120 are positioned, the cutting gun kit 120 is movably connected with the supporting frame 210, the position of the cutting gun kit 120 can be properly adjusted, a worker can drive the supporting frame 210 to act by hand, and can easily do circular motion along the air duct due to the action of the roller component 220 to drive the cutting gun kit 120 to circularly cut the air duct, compared with the existing desk-top plasma cutting machine and handheld angle grinder, the portable plasma cutting machine is convenient to carry and operate, can reduce the technical requirements of users to a certain extent, and is suitable for circular air pipes with different diameters, in particular to air pipes with large diameters.

It can be understood that the number of the roller assemblies 220 can be set as required, and two or more than two sets are provided in this embodiment, so that the moving direction of the roller assemblies 220 can be conveniently controlled, and the roller assemblies 220 can be prevented from deviating from the circular tangent line when making circular motion around the air duct as far as possible. Specifically, the roller 221 is made of rubber, and has moderate elasticity, flat wheel surface and width not less than 3cm, so as to ensure that the air duct does not roll on the support assembly 300 when the circular cutting mechanism 200 moves.

In some embodiments, the supporting frame 210 comprises a vertical member 211, a first transverse member 212 and a second transverse member 213 which are oppositely arranged at intervals, wherein one end of the vertical member 211 is connected with the first transverse member 212, and the other end is connected with the second transverse member 213 to form a U-shaped structure; one of the rollers 221 is installed inside the first cross member 212 and the other roller 221 is installed inside the second cross member 213 such that the two rollers 221 are spaced apart from each other. The support frame 210 with the U-shaped structure is beneficial to mounting the two rollers 221, and the structure is compact.

In some embodiments, the connecting member 214 is connected to the cutting torch assembly 120, and the cutting torch assembly 120 is rotatably connected to the supporting frame 210 through the connecting member 214, specifically, the connecting point of the connecting member 214 and the first cross member 212 is a rotatable fulcrum, so that the position of the cutting torch assembly 120 can be properly adjusted, the working end of the cutting torch assembly 120 is in contact with the circular tangent line, and the adjusted position can be locked and fixed by a fastener. The position of the rotatable fulcrum may be disposed between the adjacent two sets of roller assemblies 220, or may be disposed outside thereof.

In some embodiments, the circular cutting mechanism 200 further includes a handle 215, the handle 215 is fixedly connected to the supporting frame 210, and the handle 215 is used for being held by a worker to operate, so as to drive the circular cutting mechanism 200 to move circularly along the air duct, thereby improving the operation convenience. Specifically, the handle 215 includes a connecting end 2151 and a holding end 2152, the connecting end 2151 is fixedly connected with the vertical member 211, and the diameter of the holding end 2152 is slightly larger than the connecting end 2151 for holding by a worker.

Further, the handle 215, the vertical member 211, the first horizontal member 212 and the connection member 214 are hollow structures, the handle 215, the support frame 210 and the connection member 214 have threading passages communicating with each other inside, one end of the wire 130 of the portable plasma cutting machine 100 is connected to the main machine 110, and the other end of the wire 130 passes through the threading passages of the handle 215, the support frame 210 and the connection member 214 in sequence to be connected to the cutting gun set 120, so that the position of the wire 130 can be properly fixed, and the wire 130 is prevented from being entangled and knotted when the air duct is cut circularly.

In some embodiments, the handheld air duct girdling device further comprises a vacuum cleaner 400, the vacuum cleaner 400 is used for sucking the waste dust and smoke dust generated by the cutting of the air duct by the cutting torch assembly 120, the vacuum cleaner 400 comprises a suction head 410, a first pipeline 420 and a negative pressure device 430, the suction head 410 is rotatably arranged on the connecting member 214 and faces to the working end of the cutting torch assembly 120, the first pipeline 420 is connected with the suction head 410 and the negative pressure device 430, the negative pressure device 430 is used for generating negative pressure, so that the suction head 410 sucks the waste dust and smoke dust, and particularly, the negative pressure device 430 can generate negative pressure through a fan. The position of the suction head 410 can be adjusted by rotation towards and close to the cutting position, and the position can be locked and fixed by a fastener.

In some embodiments, a connection member 222 is disposed between the roller 221 and the support frame 210, the roller 221 and the support frame 210 are connected by the connection member 222, the connection member 222 includes an elastic member 2221, and the elastic member 2221 is used to provide an acting force for contacting and attaching the roller 221 to the air duct, so that the two rollers 221 clamp the air duct, and the contact stability between the roller 221 and the air duct is improved. Specifically, the elastic member 2221 may be a spring or rubber having a certain elastic force.

In some embodiments, the connecting member 222 further includes a sliding seat 2222, the elastic member 2221 is disposed between the sliding seat 2222 and the roller 221, the elastic member 2221 is in a compressed state, the sliding seat 2222 is slidably connected to the supporting frame 210, and the transverse position of the roller 221 on the supporting frame 210 is slidably adjusted according to the position of the tangent line, so as to maximize the position of the tangent line between the two sets of roller assemblies 220. The sliding seat 2222 can be locked and fixed by a fastener after sliding adjustment. Specifically, the sliding seat 2222 may employ a sliding clip.

Further, the connection member 222 further includes a screw 2223 and a nut 2224, a rotation shaft 2225 is disposed through the roller 221, the rotation shaft 2225 is supported on the roller seat 2226, the elastic member 2221 is disposed between the sliding seat 2222 and the roller seat 2226, the screw 2223 is disposed at both ends of the rotation shaft 2225, one end of the screw 2223 is fixedly or rotatably connected with the rotation shaft 2225, the other end of the screw 2223 passes through the sliding seat 2222 and is matched with the nut 2224, and the distance between the sliding seat 2222 and the roller 221 can be adjusted by screwing the nut 2224, so as to adjust the compression amount of the elastic member 2221, that is, adjust the pretightening force of the two rollers 221 clamping the air duct. In addition, by adjusting the amount of compression of the elastic member 2221, the circular cutting mechanism 200 can be adapted to circular cutting of air ducts of different sizes and wall thicknesses. It can be understood that the screw 2223 passes through the sliding seat 2222 but does not pass through the supporting bracket 210, so as to avoid the interference between the screw 2223 and the sliding seat 2222.

In some embodiments, the support assembly 300 includes a bracket 310 and a base 320, the bracket 310 is Y-shaped and has an arc that matches the outer surface of the air hose, and the bracket 310 has sufficient strength and friction coefficient to ensure that the air hose does not slide, roll, or move when supported on the bracket 310. The support 310 is arranged on the base 320 in a lifting manner and used for adjusting the height position of the air pipe supported on the support 310 to adapt to air pipes with different sizes, so that the air pipe is convenient to operate by the handheld ring cutting mechanism 200 at a proper height, and the support assembly 300 further comprises a driving mechanism for driving the support 310 to move up and down. Specifically, the driving mechanism may adopt a linear lifting mechanism or device such as a screw mechanism, an electric cylinder, or an air cylinder.

It will be appreciated that the number of support assemblies 300 may be set according to the length of the ductwork that needs to be supported, with the longer the length of the ductwork, the greater the number of support assemblies 300 that are needed.

The working process of the handheld air duct circular cutting device of the embodiment is as follows: placing the air pipe to be cut on the bracket 310, and adjusting the bracket 310 to enable the air pipe to be at a proper height position; drawing a circular tangent line on the air pipe according to the cutting length; installing the circular cutting mechanism 200, wherein two rollers 221 are arranged on the outer surface of the air pipe, and the other two rollers 221 are arranged inside the air pipe; the nuts 2224 of the connecting members 222 corresponding to the rollers 221 are respectively screwed and adjusted, and the compression amount of the elastic members 2221 is adjusted, so that the rollers 221 are ensured to be in contact with the surface of the air duct and have a certain pretightening force, and the contact force is based on that the circular cutting mechanism 200 does not generate pause when the handle 215 is shaken; the position of the connecting component 214 connected with the cutting gun kit 120 is adjusted in a rotating way, so that the working end of the cutting gun kit 120 is enabled to be coincided with the circular cutting line, and the position of the suction head 410 of the dust collector 400 is adjusted, so that the suction head 410 faces to the working end of the cutting gun kit 120; and (3) performing necessary safety protection in the plasma cutting process, starting the main machine 110, shaking the handle 215 to enable the circular cutting mechanism 200 to perform circular motion on the surface of the air pipe along a circular cutting line, and gradually separating the air pipe of the part to be cut from the original air pipe under the action of plasma rays to complete circular cutting.

The hand-held type tuber pipe ring cutting device of this embodiment can the circular tuber pipe of the various sizes of adaptation and wall thickness to cutting speed is fast, and the operation of being convenient for is fit for carrying out the ring cutting at tuber pipe processing factory and tuber pipe erection site to the tuber pipe, and the efficiency of construction is high.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.