Building decoration cutting equipment

Abstract

The utility model relates to the technical field of cutting equipment, and provides building decoration cutting equipment which comprises a cutting table, a cutting machine and an electric controller, in the building decoration cutting equipment, a threaded rod B is screwed to enable a connecting block to drive the height from the bottom of a rotating roller to the surface of the cutting table to be the thickness of a cut plate, and then a threaded rod A is screwed to enable the connecting block to drive the rotating roller to rotate. The connecting plates drive the bottoms of the limiting frames to make contact with the upper surface of the cutting table, then screw rods are screwed correspondingly, two sliding blocks drive the two limiting frames correspondingly to limit the two sides of the cut plate correspondingly, then a motor A is started, and the motor A drives a rotating roller to rotate; and the rotating roller drives the cutting plate to be movably cut towards the cutting knife under the limiting of the two limiting frames, and the cutting flexibility of the cutting machine is improved through the arrangement of the driving assembly. By means of the technical scheme, the problems that in the prior art, plates of different sizes cannot be conveniently and rapidly limited and positioned, and the cutting knife is low in flexibility are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting equipment, and in particular to a building decoration and renovation cutting equipment. Background Art

[0002] When decorating a house, cutting equipment is needed to cut boards of different shapes and sizes to obtain boards of the required size.

[0003] A patent with patent number CN219445254U discloses a building decoration cutting device, including a building decoration cutting table, the bottom of which is fixedly connected to a motor, two rotating rods rotatably connected to the building decoration cutting table are penetrated by the building decoration cutting table, the rotating rod on the left is fixedly connected to the output end of the motor, the outer walls of the two rotating rods are sleeved with belts, the tops of the two rotating rods are fixedly connected to driving gears, two clamping mechanisms are provided on the building decoration cutting table, and a collecting mechanism is provided on the building decoration cutting table.

[0004] However, the architectural decoration cutting device in the above patent still has certain problems during use. It is not convenient to quickly limit and position plates of different sizes, and the cutting knife has low flexibility. Therefore, a architectural decoration cutting device is proposed. Utility Model Content

[0005] The utility model provides a building decoration cutting device, which solves the problems in the related art that it is inconvenient to quickly limit and position plates of different sizes and the cutting knife has low flexibility.

[0006] The technical solution of the utility model is as follows:

[0007] A building decoration cutting device, comprising a cutting table for support, a cutting machine for plate cutting and an electric controller for controlling the device, and also comprising:

[0008] A processing mechanism, wherein the processing mechanism is arranged at one end of the cutting table, the processing mechanism comprises a rotating roller, a mounting frame, a motor A, an adjusting assembly and a limiting assembly, the mounting frame is arranged in an N shape, the two ends of the rotating roller pass through the two sides of the bottom of the mounting frame, and are rotatably connected to the mounting frame, the motor A is fixedly mounted on one side of the mounting frame, and one end of the output shaft is fixedly connected to one end of the rotating roller, the adjusting assembly and the limiting assembly are each provided with two groups, and are symmetrically distributed along the middle of the rotating roller, the limiting assembly comprises a limiting frame, a sliding block and a screw, and a supporting assembly is provided on the top of the limiting frame.

[0009] Preferably, one end of the bottom of the limit frame is sleeved on the outside of the rotating roller and one end of the mounting frame, and is slidably connected to the mounting frame and the rotating roller. The limit frame is arranged in a U shape, and one end of the sliding block is arranged inside a sliding groove opened on one side of the limit frame, and is slidably connected to the inner wall of the sliding groove. The screw rod passes through one end of the sliding block and is threadedly connected to the sliding block. The screw rod passes through one end of the sliding block and is rotatably connected to one side of the middle part of the mounting frame.

[0010] Preferably, the support assembly includes a connecting plate and a threaded rod A, the connecting plate is fixedly connected to one end of the limit frame opening, the threaded rod A passes through the middle of the connecting plate and is threadedly connected to the connecting plate, and the threaded rod A passes through one end of the connecting plate and contacts the top of the mounting frame.

[0011] Preferably, the adjustment assembly includes a fixed block, a connecting block and a threaded rod B, the fixed block is fixedly connected to the cutting table, the connecting block is arranged in a 7 shape, one end of the connecting block horizontal plate is fixedly connected to one end of the mounting frame, one end of the connecting block vertical plate is arranged on the top of the fixed block, the threaded rod B passes through the connecting block and is threadedly connected to the connecting block, and the threaded rod B passes through one end of the connecting block and is rotatably connected to the fixed block.

[0012] Preferably, the cutting machine is arranged in the middle of the cutting table and is connected to the cutting table through a driving assembly, the driving assembly includes a rotating table, a motor B, a connecting rod A and a connecting rod B, the rotating table is rotatably connected to the inside of a through groove opened in the middle of the cutting table, a through groove is arranged at the inner bottom of the rotating table, the top of the cutting knife on the cutting machine passes through the top of the rotating table and is sealed and movably connected to the rotating table, the cutting machine is detachably connected to the rotating table through an installation assembly, the motor B is arranged at the bottom of the rotating table, and is clamped with both sides of the cutting table through a connecting rod B fixedly connected to the outside, the middle part of the connecting rod A is fixedly connected to one end of the output shaft of the motor B, and the two sides of the connecting rod A are clamped with the two ends of the bottom of the rotating table.

[0013] Preferably, the connecting rod A and the connecting rod B are both configured as round rods, and the bottoms of the connecting rods A and B are both U-shaped, and blocks are provided on both sides of the U-shaped openings at the bottoms of the connecting rods A and B. The cutting table and the rotating table are respectively provided with slots for clamping and limiting the blocks on the connecting rods B and A.

[0014] Preferably, the mounting assembly includes a mounting plate and a limit block, the cutting machine is fixedly mounted on the top of the mounting plate, the mounting plate is fitted with the inner wall of the through groove at the bottom of the rotating table, a plurality of ventilation holes are opened on the mounting plate, two limit blocks are provided, and are symmetrically distributed along the middle part of the rotating table, one end of the two limit blocks are respectively connected to the rotating table for rotation, and the other ends of the two limit blocks are respectively arranged at the bottom of the connection between the mounting plate and the rotating table, and are fitted with the mounting plate and the bottom of the rotating table.

[0015] Preferably, a dust suction assembly is provided on one side of the cutting table, and the dust suction assembly includes a fan, a dust collecting box and a connecting pipe. The fan is fixedly installed at one end of the top of the dust collecting box, and the exhaust port of the fan is connected to the outside. One end of the dust suction port of the connecting pipe is provided on the top of the rotating table, and the other end of the connecting pipe is fixedly connected to the inside of the dust collecting box. One end of the fan dust suction duct is connected to the inside of the dust collecting box.

[0016] Preferably, one end of the connecting pipe close to the rotating table is fixedly connected to a dust hopper, the dust hopper is configured to be conical, and the diameter of the dust inlet at the bottom is larger than the diameter of the rotating table.

[0017] Preferably, a section in the vertical direction where the connecting pipe is connected to the dust hopper is configured as an elastic telescopic pipe.

[0018] The working principle and beneficial effects of the utility model are:

[0019] 1. In the utility model, by screwing the threaded rod B, the connecting block drives the rotating roller connected to the mounting frame to adjust the height, so that the height of the bottom of the rotating roller from the surface of the cutting table is the thickness of the cutting plate, and then by screwing the threaded rod A, the connecting plate is moved in the direction close to the surface of the cutting table under the limit of the mounting frame until the bottom of the limit frame contacts the upper surface of the cutting table, and then by screwing the screw rods respectively, the two sliding blocks respectively drive the two limit frames to move on the outer sides of the rotating roller and the mounting frame, so that the two limit frames limit the two sides of the cutting plate respectively, so that the position to be cut of the cutting plate corresponds to the cutting knife, and then the motor A is started, and the motor A drives the rotating roller to rotate, so that the rotating roller drives the cutting plate to move and cut at the cutting knife under the limit of the two limit frames, so that the cutting flexibility of the cutting machine is improved by the driving component, and the cutting plate is quickly and accurately limited and positioned by the processing mechanism, and the purpose of fast and automatic cutting of the cutting plate is achieved by setting the rotating roller and the motor A. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the processing mechanism structure of the utility model;

[0023] Figure 3 It is a partial cross-sectional view of the utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the dust collection component of the utility model;

[0025] Figure 5 It is a side view of the utility model;

[0026] In the figure: 1. cutting table; 2. electric controller; 3. cutting machine; 4. processing mechanism; 5. rotating roller; 6. mounting frame; 7. motor A; 8. fixing block; 9. connecting block; 10. threaded rod B; 11. limiting frame; 12. sliding block; 13. screw rod; 14. connecting plate; 15. threaded rod A; 16. rotating table; 17. motor B; 18. connecting rod A; 19. connecting rod B; 20. cutting knife; 21. clamping block; 22. clamping groove; 23. mounting plate; 24. limiting block; 25. fan; 26. dust box; 27. connecting pipe; 28. dust hopper. DETAILED DESCRIPTION

[0027] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Example 1

[0029] like Figure 1~Figure 5 As shown, this embodiment proposes a building decoration cutting device, including a cutting table 1 for support, a cutting machine 3 for plate cutting, and an electric controller 2 for controlling the device, and also includes:

[0030] The processing mechanism 4 is arranged at one end of the cutting table 1. The processing mechanism 4 includes a rotating roller 5, a mounting frame 6, a motor A7, an adjustment component and a limit component. The mounting frame 6 is arranged in an N shape. Both ends of the rotating roller 5 pass through both sides of the bottom of the mounting frame 6 and are rotatably connected to the mounting frame 6. The motor A7 is fixedly installed on one side of the mounting frame 6, and one end of the output shaft is fixedly connected to one end of the rotating roller 5. Two groups of adjustment components and limit components are provided, and are symmetrically distributed along the middle of the rotating roller 5. The limit component includes a limit frame 11, a sliding block 12 and a screw 13. A support component is provided on the top of the limit frame 11.

[0031] Preferably, one end of the bottom of the limiting frame 11 is sleeved on the outside of the rotating roller 5 and one end of the mounting frame 6, and is slidably connected with the mounting frame 6 and the rotating roller 5. The limiting frame 11 is set in a U-shape, one end of the sliding block 12 is set inside the slide groove opened on one side of the limiting frame 11, and is slidably connected with the inner wall of the slide groove, the screw rod 13 passes through one end of the sliding block 12, and is threadedly connected with the sliding block 12, and the screw rod 13 passes through one end of the sliding block 12 and is rotatably connected with one side of the middle part of the mounting frame 6. The purpose of this setting is to realize that by screwing the screw rod 13 respectively, the two sliding blocks 12 respectively drive the two limiting frames 11 to move outside the rotating roller 5 and the mounting frame 6, so as to achieve the purpose of allowing the two limiting frames 11 to limit the two sides of the cut plate respectively.

[0032] Preferably, the support assembly includes a connecting plate 14 and a threaded rod A15, wherein the connecting plate 14 is fixedly connected to one end of the opening of the limiting frame 11, the threaded rod A15 passes through the middle of the connecting plate 14 and is threadedly connected to the connecting plate 14, and one end of the threaded rod A15 passes through the connecting plate 14 and contacts the top of the mounting frame 6. The purpose of this arrangement is to realize that by twisting the threaded rod A15, the connecting plate 14 moves toward the surface of the cutting table 1 under the limit of the mounting frame 6, so that the bottom of the limiting frame 11 contacts the upper surface of the cutting table 1, and the purpose of accurately and stably limiting the cutting plates of different thicknesses is achieved.

[0033] Preferably, the adjustment assembly includes a fixed block 8, a connecting block 9 and a threaded rod B10, wherein the fixed block 8 is fixedly connected to the cutting table 1, the connecting block 9 is arranged in a 7-shaped shape, one end of the horizontal plate of the connecting block 9 is fixedly connected to one end of the mounting frame 6, one end of the vertical plate of the connecting block 9 is arranged on the top of the fixed block 8, the threaded rod B10 penetrates the connecting block 9 and is threadedly connected to the connecting block 9, and the threaded rod B10 passes through one end of the connecting block 9 and is rotatably connected to the fixed block 8. The purpose of this arrangement is to achieve that by twisting the threaded rod B10, the connecting block 9 drives the rotating roller 5 connected to the mounting frame 6 to adjust the height, so that the height of the bottom of the rotating roller 5 from the surface of the cutting table 1 is the thickness of the cutting plate, so as to achieve the purpose of driving the limited cutting plate to move toward the cutting knife 20 by the rotating roller 5.

[0034] In this embodiment, by screwing the threaded rod B10, the connecting block 9 drives the rotating roller 5 connected to the mounting frame 6 to adjust the height, so that the height of the bottom of the rotating roller 5 from the surface of the cutting table 1 is the thickness of the cutting plate, and then by screwing the threaded rod A15, the connecting plate 14 is moved in the direction close to the surface of the cutting table 1 under the limit of the mounting frame 6 until the bottom of the limit frame 11 contacts the upper surface of the cutting table 1, and then by screwing the screw rod 13 respectively, the two sliding blocks 12 respectively drive the two limit frames 11 to move outside the rotating roller 5 and the mounting frame 6, so that the two limit frames 1 1 limits the two sides of the cutting plate respectively, so that the position to be cut of the cutting plate corresponds to the cutting knife 20, and then the motor A7 is started, and the motor A7 drives the rotating roller 5 to rotate, so that the rotating roller 5 drives the cutting plate to move to the cutting knife 20 for cutting under the limit of the two limit frames 11, so that the cutting flexibility of the cutting machine 3 is improved by the driving component, and the cutting plate is quickly and accurately limited and positioned by the processing mechanism 4, and the purpose of quickly and automatically cutting the cutting plate is achieved through the setting of the rotating roller 5 and the motor A7.

[0035] Example 2

[0036] like Figure 1~Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes that the cutting machine 3 is arranged in the middle of the cutting table 1 and is connected to the cutting table 1 through a driving assembly. The driving assembly includes a rotating table 16, a motor B17, a connecting rod A18 and a connecting rod B19. The rotating table 16 is rotatably connected to the inside of a through groove opened in the middle of the cutting table 1. A through groove is arranged at the bottom of the rotating table 16. The top of the cutting knife 20 on the cutting machine 3 passes through the top of the rotating table 16 and is sealed and movably connected to the rotating table 16. The cutting machine 3 is detachably connected to the rotating table 16 through an installation assembly. The motor B17 is arranged at the bottom of the rotating table 16 and is clamped with both sides of the cutting table 1 through a connecting rod B19 fixedly connected to the outside. The middle of the connecting rod A18 is fixedly connected to one end of the output shaft of the motor B17, and the two sides of the connecting rod A18 are clamped with both ends of the bottom of the rotating table 16.

[0037] Preferably, the connecting rod A18 and the connecting rod B19 are both round rods, and the bottoms of the connecting rods A18 and B19 are both U-shaped, and blocks 21 are provided on both sides of the U-shaped openings at the bottoms of the connecting rods A18 and B19, and the cutting table 1 and the rotating table 16 are respectively provided with slots 22 for clamping and limiting the blocks 21 on the connecting rods B19 and A18. The purpose of this arrangement is to achieve the correspondence between the blocks 21 on the connecting rods B19 and A18 and the slots 22 on the cutting table 1 and the rotating table 16, so as to facilitate the disassembly and assembly of the motor B17 and the removal of the cutting machine 3 from the rotating table 16 for inspection and replacement.

[0038] Preferably, the mounting assembly includes a mounting plate 23 and a stopper 24. The cutting machine 3 is fixedly mounted on the top of the mounting plate 23. The mounting plate 23 is fitted with the inner wall of the through groove at the bottom of the rotating table 16. A plurality of ventilation holes are provided on the mounting plate 23. Two stopper blocks 24 are provided and are symmetrically distributed along the middle of the rotating table 16. One end of the two stopper blocks 24 is respectively rotatably connected to the rotating table 16. The other ends of the two stopper blocks 24 are respectively arranged at the bottom of the connection between the mounting plate 23 and the rotating table 16, and are fitted with the mounting plate 23 and the bottom of the rotating table 16. The purpose of this arrangement is to achieve the purpose of releasing the limit of the mounting plate 23 by rotating the stopper block 24 away from the connection between the mounting plate 23 and the rotating table 16, so as to facilitate the disassembly of the cutting machine 3.

[0039] In this embodiment, the motor B17 drives the rotating table 16 connected to the connecting rod A18 to rotate, so that the rotating table 16 drives the cutting blade 20 on the cutting machine 3 to rotate and adjust, thereby improving the flexibility of the cutting machine 3 in cutting the plate.

[0040] Example 3

[0041] like Figure 1~Figure 5 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment further proposes that a dust suction assembly is provided on one side of the cutting table 1, and the dust suction assembly includes a fan 25, a dust collecting box 26 and a connecting pipe 27. The fan 25 is fixedly installed at one end of the top of the dust collecting box 26, and the exhaust port of the fan 25 is connected to the outside. One end of the dust suction port of the connecting pipe 27 is provided on the top of the rotating table 16, and the other end of the connecting pipe 27 is fixedly connected to the inside of the dust collecting box 26. One end of the dust suction pipe of the fan 25 is connected to the inside of the dust collecting box 26.

[0042] Preferably, one end of the connecting pipe 27 close to the rotating table 16 is fixedly connected with a dust hopper 28, and the dust hopper 28 is set to be conical, and the diameter of the dust inlet at the bottom is larger than the diameter of the rotating table 16. The purpose of this setting is to achieve the purpose of increasing the dust collection range of the connecting pipe 27 through the setting of the dust hopper 28.

[0043] Preferably, a section of the vertical direction where the connecting pipe 27 is connected to the dust hopper 28 is set as an elastic telescopic pipe. The purpose of this setting is to achieve the purpose of adjusting the dust collection height of the dust hopper 28 by setting a section of the elastic telescopic pipe of the connecting pipe 27.

[0044] In this embodiment, by starting the fan 25, the waste generated during the cutting process is sucked by the connecting pipe 27, and the waste is caused to fall into the dust collecting box 26 for collection, so as to facilitate the treatment of the waste.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A building decoration cutting device, comprising a cutting table (1) for support, a cutting machine (3) for cutting a plate, and an electric controller (2) for controlling the device, characterized in that: Also includes: A processing mechanism (4), the processing mechanism (4) is arranged at one end of the cutting table (1), the processing mechanism (4) comprises a rotating roller (5), a mounting frame (6), a motor A (7), an adjustment component and a limit component, the mounting frame (6) is arranged in an N shape, the two ends of the rotating roller (5) pass through the two sides of the bottom of the mounting frame (6) and are rotatably connected to the mounting frame (6), the motor A (7) is fixedly mounted on one side of the mounting frame (6), and one end of the output shaft is fixedly connected to one end of the rotating roller (5), the adjustment component and the limit component are each provided with two groups, and are symmetrically distributed along the middle of the rotating roller (5), the limit component comprises a limit frame (11), a sliding block (12) and a screw (13), and a support component is provided on the top of the limit frame (11).

2. The building decoration cutting equipment according to claim 1, characterized in that: One end of the bottom of the limit frame (11) is sleeved on the outside of the rotating roller (5) and one end of the mounting frame (6), and is slidably connected to the mounting frame (6) and the rotating roller (5); the limit frame (11) is arranged in a U-shape; one end of the sliding block (12) is arranged in a sliding groove opened on one side of the limit frame (11), and is slidably connected to the inner wall of the sliding groove; the screw rod (13) passes through one end of the sliding block (12) and is threadedly connected to the sliding block (12); the screw rod (13) passes through one end of the sliding block (12) and is rotatably connected to one side of the middle part of the mounting frame (6).

3. The building decoration cutting equipment according to claim 1, characterized in that: The support assembly comprises a connecting plate (14) and a threaded rod A (15); the connecting plate (14) is fixedly connected to an open end of the limiting frame (11); the threaded rod A (15) passes through the middle of the connecting plate (14) and is threadedly connected to the connecting plate (14); one end of the threaded rod A (15) passes through the connecting plate (14) and contacts the top of the mounting frame (6).

4. The building decoration cutting equipment according to claim 1, characterized in that: The adjustment assembly comprises a fixed block (8), a connecting block (9) and a threaded rod B (10); the fixed block (8) is fixedly connected to the cutting table (1); the connecting block (9) is arranged in a 7-shape; one end of a horizontal plate of the connecting block (9) is fixedly connected to one end of a mounting frame (6); one end of a vertical plate of the connecting block (9) is arranged on the top of the fixed block (8); the threaded rod B (10) passes through the connecting block (9) and is threadedly connected to the connecting block (9); and the threaded rod B (10) passes through one end of the connecting block (9) and is rotatably connected to the fixed block (8).

5. The architectural decoration cutting equipment according to claim 1, characterized in that: The cutting machine (3) is arranged in the middle of the cutting table (1) and is connected to the cutting table (1) through a driving assembly. The driving assembly comprises a rotating table (16), a motor B (17), a connecting rod A (18) and a connecting rod B (19). The rotating table (16) is rotatably connected to the inside of a through slot opened in the middle of the cutting table (1). The bottom of the rotating table (16) is provided with a through slot. The top of the cutting knife (20) on the cutting machine (3) passes through the top of the rotating table (16) and is sealed and movably connected to the rotating table (16). The cutting machine (3) is detachably connected to the rotating table (16) through a mounting assembly. The motor B (17) is arranged at the bottom of the rotating table (16) and is clamped to both sides of the cutting table (1) through the connecting rod B (19) fixedly connected to the outside. The middle of the connecting rod A (18) is fixedly connected to one end of the output shaft of the motor B (17). Both sides of the connecting rod A (18) are clamped to both ends of the bottom of the rotating table (16).

6. The building decoration cutting equipment according to claim 5, characterized in that: The connecting rod A (18) and the connecting rod B (19) are both round rods, and the bottoms of the connecting rod A (18) and the connecting rod B (19) are both U-shaped. Blocks (21) are provided on both sides of the U-shaped openings at the bottoms of the connecting rod A (18) and the connecting rod B (19). The cutting table (1) and the rotating table (16) are respectively provided with clamping grooves (22) for clamping and limiting the clamping blocks (21) on the connecting rod B (19) and the connecting rod A (18).

7. The building decoration cutting equipment according to claim 5, characterized in that: The mounting assembly comprises a mounting plate (23) and a limit block (24); the cutting machine (3) is fixedly mounted on the top of the mounting plate (23); the mounting plate (23) is in contact with the inner wall of a through groove at the bottom of the rotating table (16); a plurality of ventilation holes are provided on the mounting plate (23); two limit blocks (24) are provided and are symmetrically distributed along the middle of the rotating table (16); one end of the two limit blocks (24) are respectively rotatably connected to the rotating table (16); the other ends of the two limit blocks (24) are respectively arranged at the bottom of the connection between the mounting plate (23) and the rotating table (16), and are in contact with the mounting plate (23) and the bottom of the rotating table (16).

8. The building decoration cutting equipment according to claim 1, characterized in that: A dust collection assembly is provided on one side of the cutting table (1), the dust collection assembly comprising a fan (25), a dust collection box (26) and a connecting pipe (27); the fan (25) is fixedly mounted on one end of the top of the dust collection box (26); an air outlet of the fan (25) is connected to the outside; one end of the dust collection port of the connecting pipe (27) is provided on the top of the rotating table (16); the other end of the connecting pipe (27) is fixedly connected to the inside of the dust collection box (26); and one end of the dust collection pipe of the fan (25) is connected to the inside of the dust collection box (26).

9. The building decoration cutting equipment according to claim 8, characterized in that: One end of the connecting pipe (27) close to the rotating platform (16) is fixedly connected to a dust suction hopper (28); the dust suction hopper (28) is arranged in a cone shape, and the diameter of the dust inlet at the bottom is larger than the diameter of the rotating platform (16).

10. The building decoration cutting equipment according to claim 8, characterized in that: A section in the vertical direction where the connecting pipe (27) is connected to the dust hopper (28) is arranged as an elastic telescopic pipe.

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