CN114458051A

CN114458051A - Building wall dismantling device and process

Info

Publication number: CN114458051A
Application number: CN202210243529.0A
Authority: CN
Inventors: 蔡燕滨; 吴焯文; 张滨
Original assignee: Guangdong Tuonan Construction Engineering Co ltd
Current assignee: Guangdong Tuonan Construction Engineering Co ltd
Priority date: 2022-03-12
Filing date: 2022-03-12
Publication date: 2022-05-10
Anticipated expiration: 2042-03-12
Also published as: CN114458051B

Abstract

The application discloses building wall demolishs device and technology belongs to building wall technical field, and it includes following step: removing the surface layer structure of the wall body and exposing the distribution condition of the brick structures in the wall body; cutting the connecting structure between the brick structures; and disassembling the module with the complete brick structure, thereby completing the dismantling of the wall body. This application has the characteristics that reduce the interior brick structure of wall body and damage when demolising the wall body to reach and be convenient for deposit, transport and recycle the fragment of brick structure of tearing open, reach energy-concerving and environment-protective effect.

Description

Building wall dismantling device and process

Technical Field

The application relates to the technical field of building wall dismantling, in particular to a building wall dismantling device and a building wall dismantling process.

Background

The wall body in the building is generally formed by piling bricks through concrete, and the outer surface is coated with a decorative layer, so that the aesthetic feeling of the appearance is improved. The wall body is firm and firm in structure, convenient to pile and mount and high in construction efficiency.

When the wall needs to be disassembled, people often directly knock the side face of the wall to be disassembled by a large hammer, and the brick structure in the wall is broken to fall down the wall, so that the wall is finally disassembled. In the process of implementing the application, the inventor finds that at least the following problems exist in the technology: the brick structure that produces after the wall body is demolishd is incomplete, is difficult to retrieve and recycles. There is a need for further improvement.

Disclosure of Invention

In order to improve that the brick structure that produces after the wall is demolishd is more complete, be convenient for retrieve and recycle, this application provides a building wall demolishs device and technology.

The application provides a building wall demolishs device and technology adopts following technical scheme:

a building wall demolition process comprises the following steps: removing the surface layer structure of the wall body and exposing the distribution condition of the brick structure in the wall body; cutting the connecting structure between the brick structures; and finishing the dismantling of the wall body and obtaining the module with the complete brick structure.

Through adopting above-mentioned technical scheme, cut the wall body according to the fragment of brick structure and demolish, can reduce the damage to the fragment of brick structure, can also detach the connection structure on fragment of brick structure surface simultaneously to be convenient for stack, transport and recycle the fragment of brick structure of tearing open out, reach high-efficient resources are saved's effect.

Preferably, the method comprises the steps of scanning the brick structure in the wall body, obtaining a distribution diagram of the brick structure in the wall body, guiding the distribution diagram into a controller, and controlling the dismantling device to dismantle the wall body by the controller according to distribution diagram information.

Through adopting above-mentioned technical scheme, because the inside fragment of brick structure of wall body has fixed and has great regularity, consequently, obtain the distribution diagram of fragment of brick structure through the scanning, the device is demolishd according to distribution diagram information control to the wall body to the rethread controller, and the trouble that the device was demolishd in people's control not only can be reduced to the mode of this kind of intelligence, reduces artifical labour and improves workman's personal safety, can also reduce manual operation's error, improves the precision that the inside fragment of brick structure of wall body surely goes out.

The utility model provides a building wall demolishs device, includes removal subassembly, movable block, power component and saw cutter body, the removal subassembly is used for driving the movable block removes, power component and saw cutter body are installed on the movable block, power component is used for driving the connection structure between the saw cutter body cutting fragment of brick structure.

Through adopting above-mentioned technical scheme, the removal subassembly can drive the removal piece and remove to change the position of saw cutter body, power component can drive the saw cutter body and cut the wall body, thereby reach the effect of cutting the wall body.

Preferably, the power assembly includes a cutting motor for driving the saw blade body to rotate, a balance shaft mounted on the moving block, an adjusting frame rotatably connected to the balance shaft, and an adjusting motor for driving the adjusting frame to rotate, the cutting motor is mounted at one end of the adjusting frame, a balance block is mounted at one end of the adjusting frame, which is far away from the cutting motor, the balance block is pressed against the outer side of the balance shaft, and the balance block and the cutting motor are respectively disposed at two sides of the balance shaft.

By adopting the technical scheme, the cutting motor can drive the saw blade body to rotate, so that the wall body is cut; under the great effort of wall body and saw blade body, the structure between saw blade body and the cutting motor takes place to deform, finally lead to the cutting motion of saw blade body unstable and not accurate, and under the alignment jig balanced action, through the effort between balancing piece and the balance shaft and under the effort balance between cutting motor and the balance shaft, make balance shaft dynamic stress balance, be difficult to appear the crooked condition of balance shaft, make the transmission between saw blade body and the cutting motor also more stable, and then make the cutting motion of saw blade body more stable and accurate.

Preferably, the saw blade body is provided with at least two saw blade sections with different diameters, an adjusting block is rotatably mounted on one side of the saw blade body, the saw blade body and the adjusting block are coaxially and rotatably mounted on the outer side of the balance shaft, and the balance shaft is provided with a first adjusting piece for locking the position of the adjusting block.

By adopting the technical scheme, the saw blade sections with different diameters are arranged, the position relation between the saw blade body and the wall body can be adjusted by changing the position of the adjusting block on the balance shaft and fixing the adjusting block by the first adjusting part, and therefore the saw blade sections with proper diameters can be used for cutting the wall body. Therefore, the wall bodies with different brick connecting structure thicknesses can be cut, and the applicability of the device is improved.

Preferably, a stabilizing block arranged outside the balance shaft in a sliding mode is installed on one side of the adjusting block, and a second adjusting piece used for locking the position of the stabilizing block is installed on the moving block.

Through adopting above-mentioned technical scheme, the piece that stabilizes can support the balance shaft, and the position of the piece that stabilizes can be fixed to the second regulating part to make the piece that stabilizes fix as far as in the position of better stable balance shaft, thereby can high-efficiently improve the stability of balance shaft, be favorable to the saw cutter body to keep moving steadily.

Preferably, the outer side of the saw blade body is provided with a dust suction hole, the position of the balance shaft corresponding to the wall to be disassembled for cutting is arranged in a net shape, a dust suction pipe is embedded in the balance shaft, and the dust suction pipe is connected with a dust suction device.

Through adopting above-mentioned technical scheme, when the saw sword body cutting waited to tear the wall body open, dust extraction can inhale the produced dust of cutting to reduce the pollution of dust to the environment, improve environmental protection effect.

Preferably, the moving assembly comprises a pneumatic slide rail and a moving motor which are arranged on two sides, the pneumatic slide rail is provided with a vertical sliding block in a sliding mode, the two vertical sliding blocks rotate together to be provided with a threaded rod, the threaded rod is in threaded connection with the moving block, and the moving motor is used for driving the threaded rod to rotate.

By adopting the technical scheme, the pneumatic slide rail can drive the vertical slide block to move along the length direction of the pneumatic slide rail, and the moving motor can drive the threaded rod to rotate so as to drive the moving block to move along the length direction of the threaded rod; finally, the moving block can move in the plane to drive the saw blade body to move in the vertical plane, and all positions of the wall body are cut.

Preferably, the moving block is provided with a balance shaft, the balance shaft penetrates through the wall body to be dismantled and is provided with a stabilizing plate, and the stabilizing plate is arranged on one side, far away from the moving block, of the wall body to be dismantled in a sliding mode.

Through adopting above-mentioned technical scheme, pass the wall body of waiting to tear open and install the stabilising plate with the balance shaft, the stabilising plate supports and keeps away from movable block one side at the wall body of waiting to tear open to support the one end that the movable block was kept away from to the balance shaft, with this stability that improves the balance shaft.

Preferably, the outer side of the saw blade body is provided with an external spiral convex strip, and one side of the external spiral convex strip, which is far away from the saw blade body, is provided with an inclined blade.

Through adopting above-mentioned technical scheme, the helical structure of outer spiral sand grip can make the better cutting wall body of oblique blade ability, simultaneously, can utilize the spiral clearance to reach radiating effect.

In summary, the present application includes at least one of the following beneficial technical effects:

according to the distribution condition of the brick structures of the wall body, the connecting structures among the brick structures are cut, so that complete brick structures can be obtained, and the brick structures can be conveniently stored, transported and reused;

the balance shaft, the adjusting frame, the adjusting motor and the balance block are arranged, when the saw blade body cuts a wall body along different directions, the adjusting frame can be driven to rotate through the adjusting motor, so that the balance block and the cutting motor rotate, the stress on the balance shaft is stable, the possibility of deformation is reduced, the transmission stability of the cutting motor 30 is improved, the cutting stability of the saw blade body is improved, and the cutting effect of the saw blade body is improved;

the balance shaft and the stabilizing plate are arranged, so that the stability of the balance shaft can be improved, and the cutting stability of the saw blade body is further improved;

the arrangement of at least two segments of saw blade segments, the adjusting block and the stabilizing block can adjust different saw blade segments according to the connecting structures of wall brick structures with different specifications, and the requirements on the detached brick structures are met.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of the saw blade body and power assembly of an embodiment of the present application;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is a schematic view of the structure of the saw blade body in the embodiment of the present application;

fig. 5 is a schematic diagram of a cutting path of a wall to be demolished in the embodiment of the present application.

Description of reference numerals:

1. a moving assembly; 11. a pneumatic slide rail; 12. a vertical slide block; 13. a threaded rod; 14. a moving motor; 2. a moving block; 20. a stabilizing plate; 3. a power assembly; 30. cutting the motor; 31. a balance shaft; 32. an adjusting bracket; 33. adjusting the motor; 34. a counterbalance; 35. a first gear; 36. a second gear; 4. a saw blade body; 40. external spiral convex strips; 41. a bevel blade; 5. an adjusting block; 50. a first adjustment member; 51. a stabilizing block; 52. a second adjustment member; 6. and (4) cutting the route.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses a building wall dismantling device and a building wall dismantling process.

Referring to fig. 1 and 2, the building wall demolition device comprises a moving assembly 1, a moving block 2, a power assembly 3 and a saw blade body 4, wherein the moving block 2 is installed on the moving assembly 1, the power assembly 3 and the saw blade body 4 are installed on the moving block 2, and the saw blade body 4 is installed on the power assembly 3. The movable assembly 1 is fixed on one side of a wall to be dismantled, and the movable assembly 1 can drive the movable block 2 to move on a vertical surface, so that the saw blade body 4 can operate on each position of the wall to be dismantled, and the operation flexibility of the saw blade body 4 is improved. The power assembly 3 is used for driving the saw cutter body 4 to move, and the saw cutter body 4 is used for cutting the connecting structure between the brick block structures inside the wall body, so that the effect of removing the wall body is achieved.

Referring to fig. 1, the movable assembly 1 includes the pneumatic slide rail 11 that the bisymmetry set up, and pneumatic slide rail 11 slides and is provided with vertical slider 12, and vertical slider 12 can be vertical slip on pneumatic slide rail 11, and the common fixed mounting of two vertical sliders 12 has the backup pad, rotates in the backup pad and installs threaded rod 13, and threaded rod 13 is the level setting, and threaded

rod

13 and 2 threaded connection of movable block still install movable motor 14 in the backup pad, and movable motor 14's output is connected with the one end of threaded rod 13.

The pneumatic slide rail 11 can drive the vertical slide block 12 to move stably along the vertical direction, so as to drive the moving block 2 on the supporting plate to move vertically. The moving motor 14 can drive the threaded rod 13 to rotate, thereby driving the moving block 2 to move horizontally. From this, can realize the removal of movable block 2 on the vertical face to drive saw cutter body 4 and power component 3 and treat the wall body of tearing open and cut.

Referring to fig. 2, in this embodiment, the power assembly 3 includes a cutting motor 30, a balance shaft 31, an adjusting bracket 32 and an adjusting motor 33, one end of the balance shaft 31 is fixedly mounted on the top of the moving block 2, the balance shaft 31 is horizontally disposed, the saw blade body 4 and the balance shaft 31 are both rotatably mounted on the outer side of the balance shaft 31, a first gear is fixedly mounted on one side of the saw blade body 4 close to the adjusting bracket 32, the first gear is rotatably mounted on the outer side of the balance shaft 31, and a second gear engaged with the first gear is mounted on the output end of the cutting motor 30. The cutting motor 30 drives the second gear to rotate so as to drive the first gear to rotate, thereby enabling the saw blade body 4 to rotate to cut the wall to be dismantled.

Compared with the linear motion of a saw blade, the rotary motion saw blade body 4 has the advantages that the wall to be disassembled is cut through the rotary motion, the stress of the rotary motion saw blade body 4 is more uniform, dust fragments generated by cutting are not easy to fly out from two sides of the wall to be disassembled, and the safety is higher.

The adjusting bracket 32 includes a third gear rotatably mounted on the balance shaft 31 and two connecting rods respectively mounted on both sides of the third gear, and the two connecting rods are centrally and symmetrically distributed with a center point of the third gear. One end of one connecting rod far from the third gear is fixed with the cutting motor 30, and one end of the other connecting rod far from the third gear is rotatably connected with a balance block 34, and the balance block 34 is cylindrical and the outer side surface is pressed against the outer side of the balance shaft 31.

Referring to fig. 2, when the moving assembly 1 drives the saw blade body 4 to cut a wall to the left, one end of the balance shaft 31 contacting with the wall to be removed is forced to the right, and in order to keep the stress balance of the balance shaft 31, the middle part of the balance shaft 31 is forced to the left by the second gear, and because the two stressed parts of the balance shaft 31 are different, a larger torque is generated, and the balance shaft 31 is easily destabilized. The balance weight 34 in this embodiment can apply a force to the balance shaft 31 away from the saw blade body 4, and the balance weight 34 and the second gear jointly keep the stress balance and the torque balance of the balance shaft 31, thereby improving the stability of the balance shaft 31.

An adjusting motor 33 is installed on the moving block 2, a fourth gear is installed at the output end of the adjusting motor 33, and the fourth gear is meshed with the third gear, so that the adjusting motor 33 can drive the fourth gear to rotate, the fourth gear drives the third gear to rotate, the adjusting frame 32 rotates around the balance shaft 31, and the positions of the balance block 34 and the cutting motor 30 are adjusted.

When the moving assembly 1 drives the saw blade body 4 to cut the wall upwards, the adjusting motor 33 is driven to drive the third gear to rotate; the cutting motor 30 and the second gear are rotated to the upper side of the balance shaft 31, the balance weight 34 is rotated to the lower side of the balance shaft 31, at the moment, the balance shaft 31 can receive downward acting force from the second gear and upward acting force from the balance weight 34, and therefore the stress of the balance shaft 31 is more uniform and stable and is not easy to deform.

Referring to fig. 2, in order to improve the adaptability of the saw blade body 4, two saw blade segments with different diameters are arranged on the saw blade body 4, the saw blade segment with the larger diameter is closer to the first gear, the thickness of the first gear is larger than that of the second gear, and the thickness of the first gear is the same as that of the saw blade segment with the smaller diameter or the thickness of the first gear is larger than that of the saw blade segment with the smaller diameter.

Referring to fig. 2 and 3, in order to adjust the position of the saw blade body 4, both the saw blade body 4 and the first gear can be slidably disposed outside the balance shaft 31, the adjusting block 5 is rotatably mounted on the side of the first gear away from the saw blade body 4, the adjusting block 5 is a rotating body, the rotating center line of the adjusting block coincides with the rotating center line of the saw blade body 4, the adjusting block 5 can also be slidably disposed outside the balance shaft 31, and the first adjusting member 50 is mounted on the outer side surface of the balance shaft 31. In the present embodiment, the first adjustment member 50 is a bolt. The first adjusting part 50 penetrates through the adjusting block 5 and is screwed into the balance shaft 31, and meanwhile, two threaded holes for the first adjusting part 50 to be screwed into under the working condition of the two saw blade sections are formed in the outer side surface of the balance shaft 31. In other embodiments, the first adjusting member 50 may also be a matched bolt and nut, and the first adjusting member 50 passes through the adjusting block 5 and the balance shaft 31 and is fixed by a nut.

In order to improve the stability of the balance shaft 31, a stabilizing block 51 is fixedly installed on one side, away from the first gear, of the adjusting block 5, the stabilizing block 51 is in an arch shape, the stabilizing block 51 can slide on the outer side surface of the balance shaft 31, and a second adjusting piece 52 is installed on the moving block 2. In this embodiment, the second adjusting members 52 are three bolts, one of the second adjusting members 52 sequentially passes through the stabilizing block 51 and the balance shaft 31 and is screwed into the moving block 2, the other two second adjusting members 52 are distributed on two sides of the balance shaft 31 and pass through the stabilizing block 51 and are screwed into the moving block 2, and threaded holes for the second adjusting members 52 to be screwed into under the working condition of the two saw blade segments are respectively formed in the outer side surfaces of the moving block 2 and the balance shaft 31.

Referring to fig. 2, a flange plate is installed at one end of the balance shaft 31 far away from the movable block 2, the diameter of the flange plate is the same as that of the saw blade section with the smaller diameter of the saw blade body 4 or the diameter of the flange plate is smaller than that of the saw blade section with the smaller diameter of the saw blade body 4, the balance shaft 31 is provided with a stabilizing plate 20 through the flange plate, the flange plate is fixed in the stabilizing plate 20 through six evenly arranged bolts, and sliding balls are installed on one side, close to the movable block 2, of the stabilizing plate 20.

In the process of cutting the wall to be detached, the sliding ball slides on the surface of the wall to be detached. Through the support of sliding ball, make balance shaft 31 keep away from with the fixed one end of movable block 2 slide steadily on waiting to tear the wall body open, make balance shaft 31 steady operation more, and then make the cutting motion of saw sword body 4 more stable, improve the cutting accuracy who waits to tear the wall body open.

Referring to fig. 4, the outer side of the saw blade body 4 is provided with male spiral ribs 40. The two side surfaces of the external spiral convex strip 40 are inclined inwards away from one end of the saw blade body 4, so that the cross section of the external spiral convex strip 40 is trapezoidal, a plurality of inclined blades 41 are arranged side by side along the spiral direction on one side of the external spiral convex strip 40 away from the saw blade body 4, and the blade edges of the inclined blades 41 are inclined towards one side of the rotation direction of the saw blade body 4 on one side of the rotation direction of the saw blade body 4. In the process of rotationally cutting the to-be-demolished wall body by the saw blade body 4, dust generated by cutting is scattered from the gaps of the outer spiral convex strips 40, meanwhile, heat generated by cutting can be fast scattered, the condition that the temperature of the saw blade body 4 is too high is reduced, and the service life of the saw blade body 4 is prolonged.

In this embodiment, a dust suction hole may be formed on the outer side surface of the saw blade body 4 at a position avoiding the male spiral protrusion 40, the position of the balance shaft 31 corresponding to the position of cutting the wall to be disassembled is set to be a net structure, and a dust suction pipe is embedded inside the balance shaft 31, one end of the dust suction pipe is fixed at the net structure of the balance shaft 31, and the other end of the dust suction pipe extends out of the dust suction pipe and is connected to a dust suction port of a dust suction device (not shown). The dust suction device can be a dust suction device with a dust collection device in the prior art, collects and recycles dust, reduces the dust flying out to pollute the environment, and can achieve the effect of environmental protection.

Referring to fig. 1-3, a building wall demolition process includes the following steps:

s1: and removing the surface structure of the wall body to be disassembled by adopting a grinding tool or a prying tool and other tools to expose the brick structure inside the wall body to be disassembled, so that the distribution condition of the brick structure inside the wall body to be disassembled can be clearly seen.

S2: scanning the brick structure in the wall by adopting a scanner to obtain a distribution map of the brick structure in the wall, and guiding the distribution map into a controller;

s3: and (5) installing and dismantling the device. Firstly, mounting holes are formed in a connecting structure between brick structures of a part to be removed in a wall body to be removed, after the moving assembly 1, the moving block 2, the power assembly 3 and the saw blade body 4 are assembled and fixed on one side of the wall body to be removed, one end, far away from the moving block 2, of the balance shaft 31 on the moving block 2 penetrates through the mounting holes, and finally the stabilizing plate 20 is mounted.

The controller controls the pneumatic slide rail 11, the moving motor 14, the cutting motor 30 and the adjusting motor 33 in the dismantling device according to the distribution diagram information, and cuts the connecting structure between the brick structures so as to realize dismantling of the brick structures of the wall body.

S4: after the dismantling of the brick structure in the wall body to be dismantled is completed, the brick structure with a complete structure can be obtained, so that the brick structure can be placed, transported and recycled in the later period, and the effects of energy conservation and environmental protection are achieved.

Referring to fig. 5, in the embodiment, a cutting path 6 of a connecting structure of a brick structure inside a wall is provided, and a wall to be disassembled is cut along the cutting path 6, so that the cutting efficiency is higher.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A building wall demolition technology is characterized in that: the method comprises the following steps:

removing the surface layer structure of the wall body and exposing the distribution condition of the brick structure in the wall body;

cutting the connecting structure between the brick structures;

and finishing the dismantling of the wall body and obtaining the module with the complete brick structure.

2. A building wall demolition process according to claim 1, wherein: the method comprises the steps of scanning the brick structure in the wall body, obtaining a distribution diagram of the brick structure in the wall body, guiding the distribution diagram into a controller, and controlling a dismantling device to dismantle the wall body by the controller according to distribution diagram information.

3. The utility model provides a building wall demolishs device which characterized in that: the brick cutting machine is characterized by comprising a moving assembly (1), a moving block (2), a power assembly (3) and a saw cutter body (4), wherein the moving assembly (1) is used for driving the moving block (2) to move, the power assembly (3) and the saw cutter body (4) are installed on the moving block (2), and the power assembly (3) is used for driving the saw cutter body (4) to cut a connecting structure between brick structures.

4. A building wall demolition arrangement as claimed in claim 3 wherein: the power assembly (3) comprises a cutting motor (30) for driving the saw blade body (4) to rotate, a balance shaft (31) installed on the moving block (2), an adjusting frame (32) rotatably connected to the balance shaft (31) and an adjusting motor (33) for driving the adjusting frame (32) to rotate, the cutting motor (30) is installed at one end of the adjusting frame (32), the adjusting frame (32) is far away from one end of the cutting motor (30) and is provided with a balance block (34), the balance block (34) is pressed on the outer side of the balance shaft (31), and the balance block (34) and the cutting motor (30) are respectively arranged on two sides of the balance shaft (31).

5. A building wall demolition arrangement as claimed in claim 4 wherein: the sawing blade body (4) is provided with at least two sawing blade sections with different diameters, an adjusting block (5) is rotatably mounted on one side of the sawing blade body (4), the sawing blade body (4) and the adjusting block (5) are coaxially and rotatably mounted on the outer side of a balance shaft (31), and a first adjusting piece (50) used for locking the position of the adjusting block (5) is mounted on the balance shaft (31).

6. A building wall demolition arrangement as claimed in claim 5 wherein: the adjusting device is characterized in that a stabilizing block (51) which is arranged outside the balance shaft (31) in a sliding mode is installed on one side of the adjusting block (5), and a second adjusting piece (52) used for locking the position of the stabilizing block (51) is installed on the moving block (2).

7. A building wall demolition arrangement as claimed in claim 4 wherein: the outer side of the saw blade body (4) is provided with a dust suction hole, the position of the balance shaft (31) corresponding to the wall to be detached is arranged in a net shape, a dust suction pipe is embedded in the balance shaft (31), and the dust suction pipe is connected with a dust suction device.

8. A building wall demolition arrangement as claimed in claim 3 wherein: the moving assembly (1) comprises a pneumatic sliding rail (11) and a moving motor (14), the pneumatic sliding rail (11) is provided with vertical sliding blocks (12) in a sliding mode, the two vertical sliding blocks (12) rotate together to be provided with a threaded rod (13), the threaded rod (13) is in threaded connection with the moving block (2), and the moving motor (14) is used for driving the threaded rod (13) to rotate.

9. A building wall demolition arrangement as claimed in claim 3 wherein: the movable block (2) is provided with a balance shaft (31), the balance shaft (31) penetrates through the wall to be dismantled and is provided with a stabilizing plate (20), and the stabilizing plate (20) is arranged on one side, far away from the movable block (2), of the wall to be dismantled in a sliding mode.

10. A building wall demolition arrangement as claimed in claim 3 wherein: the outer side of the saw blade body (4) is provided with an outer spiral convex strip (40), and one side, away from the saw blade body (4), of the outer spiral convex strip (40) is provided with an inclined blade (41).