CN220739141U - Air pipe edge-folding device - Google Patents

Abstract

The utility model relates to an air pipe edge collecting device, which comprises a driving electric hammer, a hammering structure and a supporting arm, wherein a clamping head is arranged on the driving electric hammer; the bearing arm is arranged below the hammering structure along the direction from the hammering surface to the clamping head and is detachably connected with the driving electric hammer, and the vertical distance between one end of the bearing arm far away from the driving electric hammer and the clamping head is larger than the vertical distance between the hammering surface and the clamping head, so that the bearing arm at least supports the edge of the air pipe; the driving electric hammer is used for driving the hammering structure to reciprocate towards the direction close to or far away from the driving electric hammer so that the hammering surface hammers the edge of the air pipe, the edge of the air pipe is subjected to edge folding processing, and compared with the scheme that tools such as a hand-held hammer are adopted in the prior art to carry out edge folding processing on the air pipe, the driving electric hammer is trouble-saving and labor-saving, therefore the working efficiency of edge folding of the air pipe is improved, and the overall efficiency of air pipe manufacturing is improved.

Description

Air pipe edge-folding device

Technical Field

The disclosure relates to the technical field of air duct processing, in particular to an air duct edge-trimming device.

Background

The air pipe is a pipeline system for air transportation, distribution and smoke discharge, has good tightness, good rigidity, small ventilation resistance and low ventilation noise, and is one of indispensable components in industrial production and constructional engineering. The air pipes can be classified according to the sectional shape and the application, and can be classified into a plurality of circular air pipes, rectangular air pipes, oblate air pipes, spiral air pipes and the like according to the sectional shape. The device can be divided into a ventilation pipe, an oil smoke pipe, a dust exhaust pipe and the like according to the application.

The air pipe is usually manufactured and installed on site by using galvanized iron sheets and other materials on the construction site, the galvanized iron sheets have the advantages of high strength, capability of bearing 3000Pa of air pressure, capability of meeting the transportation of high, medium and low pressure air systems, convenience in transportation, convenience in adjustment and the like, and a large amount of edge folding and closing work is realized in the process of manufacturing and installing the air pipe on site by using the galvanized iron sheets. For example, the fireproof iron sheet air pipe with the publication number of CN 213420314U comprises a plurality of iron sheet air pipes, the cross section of each iron sheet air pipe is square, the outer wall of each iron sheet air pipe is spliced with fireproof plates to form the fireproof iron sheet air pipe, the fireproof plates are enclosed to form a tubular structure with the square cross section, the adjacent fireproof iron sheet air pipes are connected through flanges, and fireproof material layers are coated on the flanges.

However, in the prior art, the edge and the closing work of the air pipe are performed by manually beating the air pipe by using tools such as a hammer and a hammer, so that the air pipe is labor-consuming and labor-consuming, and the working efficiency is low.

Disclosure of Invention

In order to solve the technical problems described above or at least partially solve the technical problems described above, the present disclosure provides an air duct edging device.

The utility model provides an air pipe edge collecting device, which comprises a driving electric hammer, a hammering structure and a supporting arm;

the driving electric hammer is provided with a clamping head, the hammering structure is detachably connected in the clamping head, and one end of the hammering structure, which is away from the driving electric hammer, is provided with a hammering surface for hammering the air pipe;

the bearing arm is arranged below the hammering structure along the direction from the hammering surface to the clamping head, is detachably connected with the driving electric hammer, and the vertical distance between one end, far away from the driving electric hammer, of the bearing arm and the clamping head is larger than the vertical distance between the hammering surface and the clamping head, so that the bearing arm at least supports the edge of the air pipe;

the driving electric hammer is used for driving the hammering structure to reciprocate towards a direction close to or far away from the driving electric hammer, so that the hammering surface hammers the edge of the air pipe, and edge trimming treatment is carried out on the edge of the air pipe.

Optionally, the hammering structure comprises a connecting rod and a hammer head;

one end of the connecting rod is detachably connected with the clamping head, the hammer head is connected with the other end of the connecting rod, and one surface of the hammer head, which is away from the connecting rod, is formed into the hammering surface.

Optionally, the dimension of the hammer head along the radial direction of the connecting rod is larger than the radial dimension of the connecting rod.

Optionally, the hammer head and the connecting rod are integrally formed.

Optionally, the bearing arm comprises a first supporting arm, a second supporting arm and a third supporting arm which are sequentially connected;

one end of the first supporting arm, which is away from the second supporting arm, is detachably connected with the driving electric hammer, and one end of the third supporting arm, which is away from the second supporting arm, is positioned on one side of the hammering surface, which is away from the clamping head.

Optionally, at least part of the second bracket arm protrudes away from the driving electric hammer;

and/or, the air pipe edge folding device further comprises a locking hoop; the locking hoop is detachably connected to the driving electric hammer, and one end of the first supporting arm, which is away from the second supporting arm, is fixed to the locking hoop.

Optionally, the size of the supporting arm is not smaller than the size of the hammering surface along the thickness direction of the driving electric hammer.

Optionally, the air pipe edge-folding device further comprises a locking hoop;

the locking hoop is provided with a mounting hole for the driving electric hammer to penetrate through, the locking hoop is sleeved on the outer wall of the driving electric hammer and is fixed relative to the driving electric hammer, and the bearing arm is fixed on the locking hoop.

Optionally, the locking band comprises a hoop and a locking member;

the mounting hole is formed in the hoop, the mounting hole can be opened and closed, a first connecting hole is formed in one end of the hoop, a second connecting hole is formed in the other end of the hoop, and the locking piece penetrates through the first connecting hole and the second connecting hole so that the hoop can be detachably connected to the driving electric hammer.

Optionally, the support arm is integrally formed with the locking band.

Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:

the utility model provides an tuber pipe edging device through setting up hammering structure and support arm, connects hammering structure on the clamping head of drive electric hammer, and the one end that deviates from of hammering structure has the hammering face. The bearing arm is arranged below the hammering structure along the direction from the hammering surface to the clamping head, the bearing arm is detachably connected with the driving electric hammer, and the vertical distance between one end, far away from the driving electric hammer, of the bearing arm and the clamping head is larger than the vertical distance between the hammering surface and the clamping head, so that the bearing arm at least supports the edge of the air pipe. The driving electric hammer is used for driving the hammering structure to reciprocate towards the direction close to or far away from the driving electric hammer so that the hammering surface hammers the edge of the air pipe, and therefore edge trimming treatment can be carried out on the edge of the air pipe. When the air pipe edge trimming device is used, the hammering structure and the supporting arm are connected to the driving electric hammer, the edge of the air pipe is propped against the supporting arm, the driving electric hammer is used for driving the hammering structure to reciprocate in the direction towards or away from the driving electric hammer, the hammering surface is enabled to continuously hammer the edge of the air pipe, and therefore the air pipe can be trimmed. Moreover, because hammering structure and bearing arm can dismantle with the drive electric hammer respectively and be connected, the installation is dismantled conveniently, so if one has the damage in drive electric hammer, hammering structure and the bearing arm and need change, only need dismantle the separation, change with one that needs to change can, saved use cost to a certain extent. In addition, in other construction stages except the edge folding treatment of the air pipe, the hammering structure can be detached from the driving electric hammer, and other operations are performed by using the driving electric hammer, so that the use functions of the driving electric hammer are enriched, the use rate of the driving electric hammer is improved, and the overall operation cost of construction is reduced to a certain extent.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, the drawings that are required for the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of an air duct edge-finishing device according to an embodiment of the disclosure;

fig. 2 is a schematic structural view of a hammering structure of an air duct edging device according to an embodiment of the present disclosure;

fig. 3 is a schematic structural view of a support arm of an air duct edging device according to an embodiment of the disclosure;

fig. 4 is a schematic structural view of a locking band and a support arm of an air duct edging device according to an embodiment of the present disclosure.

1, driving an electric hammer; 11. a clamping head; 2. a hammering structure; 21. a connecting rod; 22. a hammer head; 23. hammering the surface; 3. a support arm; 31. a first bracket arm; 32. a second bracket arm; 33. a third bracket arm; 4. a locking band; 41. a hoop; 411. a first connection hole; 412. a second connection hole; 42. a locking member; 43. and (5) mounting holes.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, a further description of aspects of the present disclosure will be provided below. It should be noted that, without conflict, the embodiments of the present disclosure and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced otherwise than as described herein; it will be apparent that the embodiments in the specification are only some, but not all, embodiments of the disclosure.

Referring to fig. 1 to 4, the present embodiment provides an air duct edging device, which includes a driving electric hammer 1, a hammering structure 2 and a supporting arm 3.

The driving electric hammer 1 is an electric tool, is one of electric drills, and can drill holes in concrete, floor slabs, brick walls and stones. The driving electric hammer 1 is characterized in that a piston which is driven by a motor and provided with a crankshaft connecting rod is additionally arranged on the basis of an electric drill, air is reciprocally compressed in a cylinder, so that the air pressure in the cylinder is periodically changed, and the changed air pressure drives a hammer in the cylinder to reciprocally strike the top of a drill bit just like a hammer to strike the drill bit, so the driving electric hammer 1 is named.

The specific structure and implementation of the driving electric hammer in this embodiment are the same as those of the driving electric hammer in the prior art, and are not described here again.

Specifically, the head of the driving electric hammer 1 is provided with a clamping head 11, the hammering structure 2 is detachably connected in the clamping head 11, one end of the hammering structure 2, which is away from the driving electric hammer 1, is provided with a hammering surface 23 for hammering an air pipe, and the hammering surface 23 is exposed on the front side of the head of the driving electric hammer 1; the support arm 3 is arranged below the hammering structure 2 in a direction between the hammering surface 23 and the clamping head 11, and is detachably connected with the driving electric hammer 1. Referring to fig. 1, the vertical distance L1 between the end of the support arm 3 remote from the driving hammer 1 and the clamping head 11 is greater than the vertical distance L2 between the hammering surface 23 and the clamping head 11, that is, the end of the support arm 3 remote from the driving hammer 1 extends to the front of the hammering surface 23, so that the support arm 3 supports at least the edge of the air duct. The driving electric hammer 1 is used for driving the hammering structure 2 to reciprocate towards a direction approaching to or away from the driving electric hammer 1 so that the hammering surface 23 hammers the edge of the air pipe, and edge trimming treatment is carried out on the edge of the air pipe.

When the air pipe edge folding device is used, the hammering structure 2 and the supporting arm 3 are connected to the driving electric hammer 1, the air pipe edge folding device in the embodiment is formed through assembly, and the air pipe can be folded after the driving electric hammer 1 is electrified.

Specifically, after the hammering structure 2, the supporting arm 3 and the driving electric hammer 1 are installed in place, when the air conditioner is electrified and used, the edge of the air pipe is propped against the supporting arm 3, the driving electric hammer 1 is utilized to drive the hammering structure 2 to reciprocate in the direction approaching to or far away from the driving electric hammer 1, and the hammering surface 23 continuously hammers the edge of the air pipe, so that the edge of the air pipe can be folded.

In some implementations, the hammering structure 2 and the supporting arm 3 can be locally obtained at the construction site, for example, the hammering structure is made of stainless steel leftover materials at the construction site, so that waste materials at the construction site are reused, the cost is saved to a certain extent, the structure is simple, and the hammering structure is easy to manufacture.

In the edge folding process, an operator holds and drives the electric hammer 1 to move along the length direction of the edge of the air pipe, so that the edge of the air pipe can be integrally folded.

The tuber pipe edging device that this embodiment provided is through setting up hammering structure 2 and supporting arm 3, connects hammering structure 2 on the clamping head 11 of drive electric hammer 1, and the one end that deviates from drive electric hammer 1 of hammering structure 2 has hammering face 23. The supporting arm 3 is arranged below the hammering structure 2 along the direction from the hammering surface 23 to the clamping head 11, the supporting arm 3 is detachably connected with the driving electric hammer 1, and the vertical distance between one end, far away from the driving electric hammer 1, of the supporting arm 3 and the clamping head 11 is larger than the vertical distance between the hammering surface 23 and the clamping head 11, so that the supporting arm 3 supports at least the edge of the air pipe. The driving electric hammer 1 is used for driving the hammering structure 2 to reciprocate towards a direction approaching or separating from the driving electric hammer 1 so that the hammering surface 23 hammers the edge of the air pipe, and therefore edge trimming treatment can be carried out on the edge of the air pipe. When the air pipe edge trimming device is used, the hammering structure 2 and the supporting arm 3 are connected to the driving electric hammer 1, the edge of the air pipe is propped against the supporting arm 3, the driving electric hammer 1 is used for driving the hammering structure 2 to reciprocate in the direction close to or far away from the driving electric hammer 1, the hammering surface 23 is enabled to continuously hammer the edge of the air pipe, and accordingly the air pipe can be trimming.

Moreover, because hammering structure 2 and supporting arm 3 can be dismantled with drive electric hammer 1 respectively and be connected, the installation is dismantled conveniently, so if drive electric hammer 1, hammering structure 2 and supporting arm 3 have one to damage when changing, only need with one dismantlement separation, the change that need change can, saved use cost to a certain extent. In addition, in other construction stages except the edge folding treatment of the air pipe, the hammering structure 2 can be detached from the driving electric hammer 1, and other operations are performed by using the driving electric hammer 1, so that the use functions of the driving electric hammer 1 are enriched, the use rate of the driving electric hammer 1 is improved, and the overall operation cost of construction is reduced to a certain extent.

In some embodiments, referring to fig. 1 and 2, the hammering structure 2 includes a connecting rod 21 and a hammer 22, one end of the connecting rod 21 is detachably connected with the clamping head 11, the hammer 22 is connected to the other end of the connecting rod 21, and a surface of the hammer 22 facing away from the connecting rod 21 is formed into a hammering surface 23, which is simple in structure and easy to manufacture.

In concrete implementation, the hammer 22 can be made of a cylindrical iron device, the connecting rod 21 can be made of the root of a drill bit, local materials can be obtained, the cost is low, and the implementation is easy.

When the pneumatic hose is specifically used, the hammer head 22 moves towards the direction away from the driving electric hammer 1 (namely towards the direction close to the air hose), the hammer is hammered on the edge of the air hose, the hammer head 22 moves towards the direction close to the driving electric hammer 1 (namely towards the direction away from the air hose), and the hammer head 22 is separated from the edge of the air hose so as to facilitate subsequent hammering and reciprocating circulation, and therefore the air hose is subjected to edge folding treatment.

In some embodiments, referring to fig. 2, the dimension of the hammer head 22 in the radial direction of the connecting rod 21 is larger than the radial dimension of the connecting rod 21.

That is, the vertical projection of the connecting rod 21 on the driving electric hammer 1 is completely covered by the vertical projection of the hammer head 22 on the driving electric hammer 1, that is, the size of the hammer head 22 is larger than the size of the connecting rod 21 along the direction parallel to the hammering surface 23, so that the contact area between the hammer head 22 and the air pipe is larger, and the edge folding efficiency of the air pipe is improved.

In some embodiments, the hammer 22 and the connecting rod 21 are integrally formed, so that the hammer face 23 has good integrity and high structural strength, and the phenomenon that the hammer 22 is separated from the connecting rod 21 is effectively avoided in the process of carrying out edge trimming treatment on the edge of the air pipe by reciprocating vibration, so that the construction safety is good.

In other embodiments, the hammer head 22 may be attached to the connecting rod 21, for example, by welding.

In some embodiments, referring to fig. 1 and 3, the support arm 3 includes a first support arm 31, a second support arm 32, and a third support arm 33 connected in sequence. One end of the first supporting arm 31, which is far away from the second supporting arm 32, is detachably connected with the driving electric hammer 1, one end of the third supporting arm 33, which is far away from the second supporting arm 32, is located on one side of the hammering surface 23, which is far away from the clamping head 11, namely, the vertical distance between one end of the third supporting arm 33, which is far away from the driving electric hammer 1, and the clamping head 11 is larger than the vertical distance between the hammering surface 23 and the clamping head 11, and the edge of the air pipe is propped against the third supporting arm 33, so that the structure is simple and the manufacturing is easy.

In particular, the first bracket arm 31, the second bracket arm 32, and the third bracket arm 33 may be made of a steel plate having a thickness of 2mm, for example.

The first bracket arm 31, the second bracket arm 32, and the third bracket arm 33 may be welded by using, for example, three scrap steel plates having smaller lengths, but of course, may be integrally formed by using one longer steel plate, which is not limited thereto.

In some embodiments, referring to fig. 1 and 3, at least a portion of the second supporting arm 32 protrudes away from the driving electric hammer 1, so that a larger avoiding space is formed between the second supporting arm 32 and the outer wall of the driving electric hammer 1, and edge folding processing of the air duct is more convenient.

In some embodiments, the air hose edge finishing device further comprises a locking hoop 4, wherein the locking hoop 4 is detachably connected to the driving electric hammer 1, and one end of the first supporting arm 31, which is away from the second supporting arm 32, is fixed on the locking hoop 4.

That is, the supporting arm 3 is connected to the driving electric hammer 1 through the locking hoop 4, so that on one hand, the assembly and the disassembly are more convenient, and on the other hand, the connection strength between the supporting arm 3 and the driving electric hammer 1 is higher, and the structural stability of the air pipe edge folding device of the embodiment is further improved.

In some embodiments, the size of the support arm 3 is not smaller than the size of the hammering structure 2 in the thickness direction of the driving electric hammer 1.

The thickness direction of the driving hammer 1, that is, the vertical direction between the face of the driving hammer 1 facing the operator and the face of the driving hammer 1 facing away from the operator during use of the driving hammer 1.

The size of the supporting arm 3 along the thickness direction of the driving electric hammer 1 is not smaller than the size of the hammering surface 23 along the thickness direction of the driving electric hammer 1, so that the supporting arm 3 can bear and support the area of the wind pipe edge accessory with a larger area, the bearing performance of the supporting arm 3 on the wind pipe edge is higher, the hammering surface 23 can hammer and edge the wind pipe edge with a larger area each time, and the working efficiency is further improved.

In some embodiments, referring to fig. 1 and 4, the air duct edging device further comprises a locking hoop 4, the locking hoop 4 is provided with a mounting hole 43 for the driving electric hammer 1 to pass through, the locking hoop 4 is sleeved on the outer wall of the driving electric hammer 1 and is fixed relative to the driving electric hammer 1, and the supporting arm 3 is fixed on the locking hoop 4.

That is, the supporting arm 3 is connected to the driving electric hammer 1 through the locking hoop 4 sleeved on the outer wall of the driving electric hammer 1, so that on one hand, the assembly and the disassembly are more convenient, and on the other hand, the connection strength between the supporting arm 3 and the driving electric hammer 1 is higher, and the structural stability of the air pipe edge folding device of the embodiment is further improved.

The driving electric hammer 1 is sleeved in the mounting hole 43 of the locking hoop 4, the connection area of the locking hoop 4 and the driving electric hammer 1 is larger, so that the connection strength of the locking hoop 4 and the driving electric hammer 1 is higher, and the connection stability between the bearing arm 3 and the driving electric hammer 1 is improved.

Of course, the hammering structure 2 may be detachably attached to the driving hammer 1 in other ways.

In some embodiments, referring to fig. 4, the locking band 4 includes a hoop 41 and a locking member 42, a mounting hole 43 is provided on the hoop 41, the mounting hole 43 is openable and closable, one end of the hoop 41 has a first coupling hole 411, the other end of the hoop 41 has a second coupling hole 412, and the locking member 42 is penetrated in the first coupling hole 411 and the second coupling hole 412 to detachably couple the hoop 41 to the driving electric hammer 1.

That is, the hoop 41 is openable and closable, so that, on the one hand, the electric hammer 1 is easily driven into and out of the mounting hole 43, and the mounting and dismounting are facilitated. On the other hand, the size of the mounting hole 43 can be adjusted in a certain range by opening and closing the hoop 41, so that errors can be compensated, and if the circumferential dimension of the mounting hole 43 formed by encircling the hoop 41 and the driving electric hammer 1 has certain errors, the errors between the mounting hole 43 and the driving electric hammer can be compensated by opening and closing the hoop 41 and the locking piece 42, so that the assembly is more convenient.

In some embodiments, the support arm 3 and the locking band 4 are integrally formed, that is, the support arm 3 and the locking band 4 form a modularized structure, so that the disassembly efficiency is high. In addition, the bearing performance of the bearing arm 3 on the edge of the air pipe is higher.

Of course, the support arm 3 can also be connected to the locking band 4, for example by welding.

It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the disclosure to enable one skilled in the art to understand or practice the disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown and described herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The wind pipe edge collecting device is characterized by comprising a driving electric hammer (1), a hammering structure (2) and a supporting arm (3);

the driving electric hammer (1) is provided with a clamping head (11), the hammering structure (2) is detachably connected in the clamping head (11), and one end of the hammering structure (2) deviating from the driving electric hammer (1) is provided with a hammering surface (23) for hammering an air pipe;

the bearing arm (3) is arranged below the hammering structure (2) along the direction from the hammering surface (23) to the clamping head (11) and is detachably connected with the driving electric hammer (1), and the vertical distance between one end, far away from the driving electric hammer (1), of the bearing arm (3) and the clamping head (11) is larger than the vertical distance between the hammering surface (23) and the clamping head (11), so that the bearing arm (3) at least supports the edge of the air pipe;

the driving electric hammer (1) is used for driving the hammering structure (2) to reciprocate towards a direction close to or far away from the driving electric hammer (1), so that the hammering surface (23) hammers the edge of the air pipe, and edge trimming treatment is carried out on the edge of the air pipe.

2. The hose edge finishing device according to claim 1, wherein said hammering structure (2) comprises a connecting rod (21) and a hammer head (22);

one end of the connecting rod (21) is detachably connected with the clamping head (11), the hammer head (22) is connected to the other end of the connecting rod (21), and one surface of the hammer head (22) deviating from the connecting rod (21) is formed into the hammering surface (23).

3. The hose edge finishing device according to claim 2, characterized in that the dimension of the hammer head (22) in the radial direction of the connecting rod (21) is greater than the radial dimension of the connecting rod (21).

4. The hose edge finishing device according to claim 2, characterized in that the hammer head (22) is integrally formed with the connecting rod (21).

5. The air duct edging device according to claim 1, characterized in that the supporting arm (3) comprises a first supporting arm (31), a second supporting arm (32) and a third supporting arm (33) connected in sequence;

one end of the first supporting arm (31) deviating from the second supporting arm (32) is detachably connected with the driving electric hammer (1), one end of the third supporting arm (33) deviating from the second supporting arm (32) is located at one side of the hammering surface (23) deviating from the clamping head (11), and the edge of the air pipe is propped against the third supporting arm (33).

6. The air hose edge finishing device according to claim 5, wherein at least part of the second bracket arm (32) protrudes away from the driving electric hammer (1);

and/or, the air pipe edge folding device further comprises a locking hoop (4); the locking hoop (4) is detachably connected to the driving electric hammer (1), and one end of the first supporting arm (31) which is far away from the second supporting arm (32) is fixed to the locking hoop (4).

7. The air duct edging device according to claim 1, characterized in that the size of the support arm (3) is not smaller than the size of the hammering face (23) in the thickness direction of the driving electric hammer (1).

8. The ductwork edging device according to any one of claims 1 to 7, characterized in that it further comprises a locking band (4);

the locking hoop (4) is provided with a mounting hole (43) for the driving electric hammer (1) to penetrate, the locking hoop (4) is sleeved on the outer wall of the driving electric hammer (1) and is relatively fixed with the driving electric hammer (1), and the supporting arm (3) is fixed on the locking hoop (4).

9. The ductwork edging device according to claim 8, characterized in that the locking band (4) comprises a band (41) and a locking member (42);

the mounting hole (43) is formed in the hoop (41), the mounting hole (43) can be opened and closed, a first connecting hole (411) is formed in one end of the hoop (41), a second connecting hole (412) is formed in the other end of the hoop (41), and the locking piece (42) is arranged in the first connecting hole (411) and the second connecting hole (412) in a penetrating mode, so that the hoop (41) can be detachably connected to the driving electric hammer (1).

10. The hose edge finishing device according to claim 8, wherein said support arm (3) is integrally formed with said locking band (4).