Dust extraction cutting machine

Abstract

The application discloses a dust-removing cutting machine which is composed of a driving device, a linkage socket, a micro water pump, a head shell, a machine shell, a rear cover and a rear cover cover plate. The power supply of the micro water pump is connected with the linkage socket to realize synchronous cutting and water spraying. A sealing ring is arranged between the tail end of the machine shell and the rear cover. The rear cover is connected with the rear cover cover plate. A rotor cooling air inlet is arranged on the rear cover cover plate. An annular isolation sheet is arranged on the rear cover. A carbon brush cover is connected with the carbon brush holder. A sealing cover is arranged outside the carbon brush cover. The above-mentioned components jointly prevent sewage and fine sand particles generated by cutting, water adding and dust removing. Negative pressure generated by the high-speed rotating rotor cooling fan can suck the sewage into the machine shell cavity. The insulation paint of the winding of the rotor and the stator, the commutator on the rotor and the bearing connected with the two ends of the rotor main shaft are damaged. The service life of the cutting machine is prolonged. Too much sewage entering into the machine shell cavity can cause electric leakage and harm the life safety of the construction personnel. The dust-removing cutting machine has the characteristics of simple structure, small size, light weight, low cost and convenient use.

Description

Technical Field

[0001] This invention belongs to the technical field of cutting tools used for grooving walls and floors in building decoration and renovation, and for cutting wall and floor tiles, stone and other materials, and specifically relates to a dust removal cutting machine. Background Technology

[0002] Currently used cutting machines for wall and floor grooving, wall and floor tile cutting, and stone cutting in building decoration have a problem: the distance between the rotor and stator cooling air inlets on the machine casing is too close to the surface of the object being cut. When water is added during cutting, the wastewater generated is easily drawn into the machine casing cavity by the negative pressure created by the rotating rotor cooling fan. This damages the insulating varnish on the rotor and stator windings, potentially causing electric shock; it also damages the commutator on the rotor and the bearings connecting both ends of the rotor shaft, reducing the lifespan of the cutting machine. Furthermore, the rotor and stator cooling air inlets are located at the rear end of the machine casing, which poses a risk when workers are cutting vertical objects. When cutting horizontally, it is not possible to cut with the machine head facing upwards and the tail downwards as is the normal usage habit. Otherwise, the wastewater generated during water cleaning and cutting will naturally flow from the head downwards to the rotor cooling air inlet at the tail of the casing. The rotor cooling fan will then suck the wastewater into the casing cavity. Instead, water cleaning and cutting can only be done with the machine head downwards and the tail upwards, which is extremely inconvenient. Furthermore, the carbon brush caps connected to the two carbon brush holders on the casing are not sealed. Small amounts of wastewater can easily be sucked into the casing through the small gap between the carbon brush holders and the carbon brush caps, through the negative pressure generated by the rotation of the rotor cooling fan, causing electric shock. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides a water-cooled dust removal cutting machine with the following solution.

[0004] A dust-removing cutting machine comprises screws, pressure plates, cutting blades, lower pressure plates, main shafts, dust covers, gear seats, first bearings, snap rings, first semi-circular keys, large gears; second bearings, head shells, small gears; second semi-circular keys, third bearings, rotors, fourth bearings, bearing sleeves, dust rings, stators, handle covers, switches, machine housings, sealing rings, rear covers, base plates, wing screws, linkage sockets, protective sleeves, power cord clamps, carbon brush holders A, carbon brush A, carbon brush covers A, carbon brush holder sealing covers A, carbon brush holders B, carbon brush B, carbon brush covers B, carbon brush holder sealing covers B, rear cover plates, and a miniature water pump, all interconnected to form a dust-removing cutting machine. The power plug on the miniature water pump is connected to the linkage socket, and the water nozzle on the miniature water pump is connected to the water nozzle connection port on the head shell. A sealing ring connects the tail end of the machine housing to the rear cover. The rear cover is connected to the rear cover plate.

[0005] Based on the above technical solution, one end of the main shaft is sequentially connected to a lower pressure plate, a cutting blade, an upper pressure plate, and a screw, while the other end of the main shaft is sequentially connected to a dust cover, a first bearing, a first semi-circular key, a large gear, and a second bearing; the first bearing connection position on the gear seat is connected to the first bearing connected to the main shaft, and the snap ring connection position on the gear seat is connected to the snap ring; the second bearing connected to the main shaft is connected to the second bearing connection position on the head shell; the gear seat screw connection hole on the gear seat is connected to the head shell screw connection hole A on the head shell.

[0006] Based on the above technical solution, the head shell is provided with a head shell rotor cooling air outlet. One end of the rotor main shaft is connected in sequence to a third bearing, a second semi-circular key, and a small gear. The other end of the rotor main shaft is connected to a fourth bearing, and a bearing sleeve is connected to the outside of the fourth bearing. The dustproof ring and the stator are located in the housing cavity. The third bearing connected to the rotor main shaft is connected to the third bearing connection position on the head shell. The bearing sleeve is connected to the housing bearing sleeve connection position on the housing. The head shell screw connection hole C on the head shell is connected to the housing screw connection hole A on the housing. The large gear connected to the main shaft meshes with the small gear connected to the rotor main shaft.

[0007] Based on the above technical solution, the linkage socket is equipped with a linkage socket power plug. The carbon brush holder A, carbon brush A, carbon brush cover A, and carbon brush holder sealing cover A are connected in sequence in the carbon brush holder connection hole A on the housing. The carbon brush holder B, carbon brush B, carbon brush cover B, and carbon brush holder sealing cover B are connected in sequence in the carbon brush holder connection hole B on the housing. The switch mounting position on the housing is connected to the switch. The power cord on the linkage socket passes through the sheath and is connected to the sheath connection position on the housing. The power cord is located in the middle of the connection between the housing screw connection hole B and the power cord clamping block. The housing screw connection hole C on the housing is connected to the handle screw connection hole on the handle cover.

[0008] Based on the above technical solution, the housing is provided with a cooling air vent for the stator and rotor, the rear cover is provided with an annular isolation plate, the rear cover plate is provided with a rear cover plate air inlet, the sealing ring connection position on the housing is connected to the sealing ring, the housing screw connection hole D is connected to the rear cover screw connection hole A on the rear cover, the rear cover screw connection hole B on the rear cover is connected to the rear cover plate screw connection hole on the rear cover plate, the rear cover plate air inlet on the rear cover plate, the cooling air vent for the stator and rotor on the rear cover, the cooling air outlet for the stator and rotor on the head shell are connected to the gap in the housing cavity, forming an integral cooling channel.

[0009] Based on the above technical solution, the head shell bottom plate connection hole on the head shell is connected to the bottom plate connection hole on the bottom plate, and the head shell screw connection hole B on the head shell is connected to the bottom plate height adjustment port on the bottom plate through a wing screw.

[0010] Based on the above technical solution, the miniature water pump is equipped with a miniature water pump power plug, a water volume adjustment switch, and a water pipe. The water nozzle connection port on the head shell is connected to the water nozzle on the miniature water pump, and the linkage socket hole on the linkage socket is connected to the miniature water pump power plug on the miniature water pump.

[0011] This application provides a water-cooled dust removal cutting machine technology, which has the following advantages: 1. By providing a cooling air inlet for the rotor and stator at the rear of the housing, and connecting the rear of the housing to the rear cover, the connection between the rear cover and the housing is sealed by a sealing ring, effectively preventing sewage from entering the interior of the housing cavity. The rear cover is provided with an annular isolation plate, which prevents sewage from entering the cooling air inlet for the rotor and stator provided on the rear cover.

[0012] 2. By connecting a rear cover to the rear of the machine housing, and the rear cover plate connected to the rear cover plate, an air inlet is provided on the rear cover plate. The air inlet of the rear cover plate, the cooling air outlet of the rotor and stator at the rear of the machine housing, and the head shell are at right angles. The distance between the air inlet of the rear cover plate and the surface of the object being cut is large. The negative pressure generated by the rotation of the rotor cooling fan will not suck the fine particles carried by the wastewater generated by the water-cooled dust removal cutting into the machine housing cavity, which would damage the winding insulation varnish on the rotor and stator, cause leakage current that could burn out the windings on the rotor and stator, and cause electric shock, or damage the bearings connected to the rotor main shaft in the machine housing cavity, thus extending the service life of the dust removal cutting machine.

[0013] 3. By connecting the two carbon brush holders on the casing, the inner carbon brush cover is connected to the outer sealing cover, preventing sewage from being sucked into the casing through the small gap between the carbon brush holder and the carbon brush cover through the negative pressure generated by the rotation of the rotor cooling fan, which could cause leakage and injury.

[0014] 4. The above methods enable construction personnel to use the dust removal cutting machine flexibly. Regardless of whether the head of the dust removal cutting machine is facing up or the tail is facing down, the wastewater generated during water cutting will not enter the interior of the machine casing, thus extending the service life of the dust removal cutting machine.

[0015] 5. By connecting the linkage socket on the main unit's power cord to the power plug on the miniature water pump, the cutting and water spraying are synchronized. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall external structure of the present invention. Figure 2 This is a schematic diagram of the unfolded structure of the components of the present invention; Figure 3 This is a schematic cross-sectional view of the body structure of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the main shaft components of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the rotor spindle components of the present invention; Figure 6 This is a schematic diagram of the front cover structure of the present invention; Figure 7 This is a schematic diagram of the left-side structure of the head shell of the present invention; Figure 8 This is a schematic diagram of the right-side structure of the head shell of the present invention; Figure 9 This is a schematic diagram of the left-side structure of the handle shell of the present invention; Figure 10 This is a schematic diagram of the right-side structure of the handle shell of the present invention; Figure 11 This is a schematic diagram of the left-side structure of the casing of the present invention; Figure 12 This is a schematic diagram of the right side view of the casing structure of the present invention; Figure 13 This is a schematic diagram of the left-side structure of the rear cover of the present invention; Figure 14 This is a schematic diagram of the right side view of the rear cover structure of the present invention; Figure 15 This is a top view of the rear cover structure of the present invention; Figure 16 This is a schematic diagram of the rear cover plate structure of the present invention; Figure 17 This is a schematic diagram of the base plate structure of the present invention; Figure 18 This is a schematic diagram of the linkage socket structure of the present invention; Figure 19 This is a schematic diagram of the micro water pump structure of the present invention; Figure 20 This is a schematic diagram of the front and right cross-sectional structure of the rear cover of the present invention; Figure 21 A schematic diagram of the location and structure of the air inlet and outlet for cooling the rotor and stator of an existing water-cooled dust removal cutting machine; Figure 22 A schematic diagram showing the distance between the ground plane and the cooling air inlet of the rotor and stator for cutting ground plane grooves using an existing water-cooled dust removal cutting machine; Figure 23 A schematic diagram showing the wastewater flow direction when cutting horizontal grooves in a wall using an existing water-cooled dust removal cutting machine. Figure 24 This is a schematic diagram showing the location and structure of the rotor cooling air inlet and outlet and the annular isolation plate on the rear cover of the present invention. Figure 25 This is a schematic diagram of the distance between the ground plane and the cooling air inlet of the rotor and stator, showing the cutting of the ground plane groove in this invention. Figure 26 This is a schematic diagram of the structure of the cutting machine for cutting horizontal grooves in walls, the location of the rotor and stator cooling air inlet and outlet, and the usage method of the cutting machine.

[0017] Figure reference numerals: 1-Screw; 2-Upper pressure plate; 3-Cut blade; 4-Lower pressure plate; 5-Main shaft; 6-Dust cover; 7-Gear seat; 8-First bearing; 9-Snap ring; 10-First semi-circular key; 11-Large gear; 12-Second bearing; 13-Head shell; 14-Pin gear; 15-Second semi-circular key; 16-Third bearing; 17-Rotor; 18-Fourth bearing; 19-Bearing sleeve; 20-Dust ring; 21-Stator; 22-Handle cover; 23-Switch; 24-Machine housing; 25-Sealing ring; 26-Rear cover; 27-Base plate; 28-Wing screw; 29-Interlock socket; 30-Sheath; 31-Power cord clamp; 3 2-Carbon brush holder A; 33-Carbon brush A; 34-Carbon brush cover A; 35-Sealing cover A; 36-Carbon brush holder B; 37-Carbon brush B; 38-Carbon brush cover B; 39-Sealing cover B; 40-Rear cover plate; 41-Miniature water pump; 42-Gear seat screw connection hole; 43-First bearing connection position; 44-Snap ring connection position; 45-Head shell bottom plate connection hole; 46-Head shell screw connection hole A; 47-Second bearing connection position; 48-Head shell screw connection hole B; 49-Head shell screw connection hole C; 50-Third bearing connection position; 51-Head shell rotor-stator cooling air outlet; 52-Water nozzle connection port; 53-Handle cover screw connection hole; 54-Machine shell screw 55-Carbon brush holder connection hole A; 56-Switch mounting position; 57-Carbon bearing sleeve connection position; 58-Carbon brush holder connection hole B; 59-Carbon brush holder connection hole B; 60-Sheath connection position; 61-Carbon bearing sleeve connection hole C; 62-Sealing ring connection position; 63-Carbon bearing sleeve connection hole D; 64-Carbon bearing sleeve cooling air vent; 65-Annular isolation plate; 66-Rear cover screw connection hole A; 67-Rear cover screw connection hole B; 68-Rear cover plate air inlet; 69-Rear cover plate screw connection hole; 70-Base plate connection hole; 71-Base plate height adjustment port; 72-Interlock socket power plug; 73-Interlock socket hole ; 74-Power cord; 75-Miniature water pump power plug; 76-Water volume adjustment switch; 77-Water pipe; 78-Water nozzle; 79-Existing cutting machine casing rotor cooling air inlet; 80-Existing cutting machine carbon brush cover; 81-Existing cutting machine rotor cooling air outlet; 82-Distance between existing cutting machine base plate and casing; 83-Cutting plane; 84-Distance between existing cutting machine casing stator air inlet and ground plane; 85-Wall; 86-Natural flow direction of existing cutting machine wastewater; 87-Distance between the base plate and casing of the cutting machine of this invention; 88-Distance between the stator cooling air inlet and ground plane of the cutting machine of this invention; 89-Natural flow direction of wastewater in the cutting machine of this invention. Detailed Implementation

[0018] The dust removal cutting machine of the present invention will be further described in detail below with reference to the accompanying drawings.

[0019] like Figure 1 ,2 As shown in Figure 3, the dust removal cutting machine of the present invention is composed of screw 1, upper pressure plate 2, cutting blade 3, lower pressure plate 4, main shaft 5, dust cover 6, gear seat 7, first bearing 8, snap ring 9, first semi-circular key 10, large gear 11, second bearing 12, head shell 13, small gear 14, second semi-circular key 15, third bearing 16, rotor 17, fourth bearing 18, bearing sleeve 19, dust ring 20, stator 21, handle cover 22, switch 23, machine housing 24, sealing ring 25, rear cover 26, base plate 27, wing screw 28, linkage socket 29, protective sleeve 30, power cord clamp 31, carbon brush holder A32, carbon brush A33, carbon brush cover A34, sealing cover A35, carbon brush holder B36, carbon brush B37, carbon brush cover B38, sealing cover B39, rear cover plate 40, and micro water pump 41, all interconnected. Detailed description follows: like Figure 2 , 3 As shown in Figures 4, 6, and 7, one end of the main shaft 5 is sequentially connected to the lower pressure plate 4, the cutting blade 3, the upper pressure plate 2, and the screw 1. The other end of the main shaft 5 is sequentially connected to the dust cover 6, the first bearing 8, the first semi-circular key 10, the large gear 11, and the second bearing 12. The first bearing connection position 43 on the gear seat 7 is connected to the first bearing 8 connected to the main shaft 5. The snap ring connection position 44 on the gear seat 7 is connected to the snap ring 9. The second bearing 12 connected to the main shaft 5 is connected to the second bearing connection position 47 on the head shell 13. The gear seat screw connection hole 42 on the gear seat 7 is connected to the head shell screw connection hole A46 on the head shell 13.

[0020] like Figure 2 , 3 As shown in Figures 5, 8, 10, 11, and 12, the head shell 13 is provided with a head shell rotor cooling air outlet 51. One end of the rotor 17 main shaft is connected in sequence to the third bearing 16, the second semi-circular key 15, and the pinion 14. The other end of the rotor 17 main shaft is connected to the fourth bearing 18. The fourth bearing 18 is externally connected to the bearing sleeve 19. The dustproof ring 20 and the stator 21 are located in the chamber of the housing 24. The third bearing 16 connected to the rotor 17 main shaft is connected to the third bearing connection position 50 on the head shell 13. The bearing sleeve 19 is connected to the housing bearing sleeve connection position 58 on the housing 24. The head shell screw connection hole C49 on the head shell 13 is connected to the housing screw connection hole A54 on the housing 24. The large gear 11 connected to the main shaft 5 meshes with the small gear 14 connected to the rotor 17 main shaft.

[0021] like Figure 2 , 10As shown in Figures 11, 12, and 18, the linkage socket 29 is equipped with a power plug 72. The carbon brush holder connection hole A55 on the housing 24 is sequentially connected to a carbon brush holder A32, a carbon brush A33, a carbon brush cover A34, and a carbon brush holder sealing cover A35. The carbon brush holder connection hole B59 on the housing is sequentially connected to a carbon brush holder B36, a carbon brush B37, a carbon brush cover B38, and a carbon brush holder sealing cover B39. The switch mounting position 56 on the housing 24 is connected to the switch 23. The power cord 74 on the linkage socket 29 passes through the sheath 30. The sheath 30 is connected to the sheath connection position 60 on the housing 24. The power cord 74 is located in the middle of the connection between the housing screw connection hole B57 and the power cord clamping block 31. The housing screw connection hole C61 on the housing 24 is connected to the handle screw connection hole 53 on the handle cover 22.

[0022] like Figure 2 , 3 As shown in 12, 13, 14, 15, 16, 20, 24, 25, and 26, the housing 24 is provided with a housing rotor-stator cooling air vent 64, the rear cover 26 is provided with an annular isolation plate 65, the rear cover plate 40 is provided with a rear cover plate air inlet 68, the sealing ring connection position 62 on the housing 24 is connected to the sealing ring 25, the housing screw connection hole D63 is connected to the rear cover screw connection hole A66 on the rear cover 26, the rear cover screw connection hole B67 on the rear cover 26 is connected to the rear cover plate screw connection hole 69 on the rear cover plate 40, the rear cover plate air inlet 68 on the rear cover plate 40, the rear cover 26, the housing 24 housing rotor-stator cooling air vent 64, the head shell housing rotor-stator cooling air outlet 51 on the head shell 13 are connected to the gap formed by the stator 21 and rotor 17 connected in the cavity of the housing 24, forming an integral cooling channel.

[0023] like Figure 1 , 7 As shown in Figure 17, the head shell bottom plate connecting hole 45 on the head shell 13 is connected to the bottom plate connecting hole 70 on the bottom plate 27, and the head shell screw connecting hole B48 on the head shell 13 is connected to the bottom plate height adjustment port 71 on the bottom plate 27 through a wing screw 28.

[0024] like Figure 8 , 18 As shown in Figure 19, the miniature water pump 41 is equipped with a miniature water pump power plug 75, a water volume adjustment switch 76, and a water pipe 77. The water nozzle connection port 52 on the head shell 13 is connected to the water nozzle 78 on the miniature water pump 41, and the linkage socket hole 73 on the linkage socket 29 is connected to the miniature water pump power plug 75 on the miniature water pump 41.

[0025] like Figure 21As shown, the diagram illustrates the existing cutting machine housing rotor cooling air inlet 79, the existing cutting machine carbon brush cover 80, the existing cutting machine rotor cooling air outlet 81, and the distance between the existing cutting machine base plate and the housing. 82 represents the positional relationship of the existing water-cooled dust removal cutting machine.

[0026] like Figure 22 , 23 As shown, the distance between the air inlet of the existing cutting machine casing and the ground plane is 84. When the existing cutting machine cuts the wall horizontally, the wastewater will flow to the cooling air inlet of the casing along the route marked 86.

[0027] like Figure 24 , 25 As shown in Figure 26, Figure 25 The diagram shows the overall operating state of the dust-removing cutting machine of the present invention when cutting the cutting plane 83. Figure 26 shows the operating state of the dust-removing cutting machine of the present invention when cutting horizontal grooves on the wall 85.

[0028] The distance between the base plate and the casing of the cutting machine of the present invention is 87; the distance between the cooling air inlet of the rotor and stator of the cutting machine of the present invention and the ground plane is 88; when the cutting machine of the present invention horizontally cuts the wall, the wastewater will flow to the cooling air inlet of the rotor and stator of the casing along the natural flow direction of the wastewater of the cutting machine of the present invention marked 89. Instructions for use: The method of using the water-cooled dust removal cutting machine of the present invention is the same as that of the existing water-cooled dust removal cutting machine. Before using the dust removal cutting machine, check whether the external parts of the machine body are loose, then connect the power supply, turn on the main power switch and run it. After checking for any abnormal noises or odors, it can be used normally.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dust-removing cutting machine, characterized in that, include: Main body, water supply components, power supply components, air intake components; The main body is composed of screws (1), upper pressure plate (2), cutting blade (3), lower pressure plate (4), main shaft (5), dust cover (6), gear seat (7), first bearing (8), snap ring (9), first semi-circular key (10), large gear (11), second bearing (12), head shell (13), small gear (14), second semi-circular key (15), third bearing (16), rotor (17), fourth bearing (18), bearing sleeve (19), dust ring (20), stator (21), handle cover (22), switch (23), housing (24), base plate (27), wing screw (28), linkage socket (29), sheath (30), power cord clamp (31), carbon brush holder A (32), carbon brush A (33), carbon brush cover A (34), sealing cover A (35), carbon brush holder B (36), carbon brush B (37), carbon brush cover B (38), and sealing cover B (39) connected to each other in sequence; The water supply assembly is composed of a water nozzle connection port (52) on the head shell (13) connected to a water nozzle (78) on the micro water pump (41); The power supply assembly is composed of a micro water pump power plug (75) on the micro water pump (41) and a linkage socket hole (73) on the linkage socket (29); The intake assembly consists of a sealing ring (25) connecting the rear end of the housing (24) to the rear cover (26), and the rear cover (26) being connected to the rear cover plate (40); The housing (24) is provided with a housing rotor-stator cooling air inlet (64), the rear cover (26) is provided with an annular isolation plate (65), the rear cover plate (40) is provided with a rear cover plate air inlet (68), the sealing ring connection position (62) on the housing (24) is connected to the sealing ring (25), the housing screw connection hole D (63) is connected to the rear cover screw connection hole A (66) on the rear cover (26), and the rear cover screw connection hole B on the rear cover (26) is connected to the rear cover screw connection hole B. (67) Connected to the screw connection hole (69) on the rear cover plate (40), the rear cover plate air inlet (68) on the rear cover plate (40), the rear cover (26), the machine housing stator cooling air inlet (64) on the machine housing (24), the head housing stator cooling air outlet (51) on the head housing (13) and the gap formed by the stator (21) and rotor (17) connected in the cavity of the machine housing (24) form an integral cooling channel.

2. The dust-removing cutting machine according to claim 1, characterized in that, One end of the main shaft (5) is connected in sequence to the lower pressure plate (4), the cutting blade (3), the upper pressure plate (2), and the screw (1). The other end of the main shaft (5) is connected in sequence to the dust cover (6), the first bearing (8), the first semi-circular key (10), the large gear (11), and the second bearing (12). The first bearing connection position (43) on the gear seat (7) is connected to the first bearing (8) on the main shaft (5), and the snap ring connection position (44) on the gear seat (7) is connected to the snap ring (9). The second bearing (12) on the main shaft (5) is connected to the second bearing connection position (47) on the head shell (13). The gear seat screw connection hole (42) on the gear seat (7) is connected to the head shell screw connection hole A (46) on the head shell (13).

3. The dust-removing cutting machine according to claim 1, characterized in that, The head shell (13) is provided with a head shell rotor-stator cooling air outlet (51). One end of the rotor (17) main shaft is connected in sequence with the third bearing (16), the second semi-circular key (15), and the pinion (14). The other end of the rotor (17) main shaft is connected with the fourth bearing (18). The fourth bearing (18) is connected with the bearing sleeve (19). The dust ring (20) and the stator (21) are located in the chamber of the housing (24). The third bearing (16) connected to the rotor (17) main shaft is connected to the third bearing connection position (50) on the head shell (13). The bearing sleeve (19) is connected to the housing bearing sleeve connection position (58) on the housing (24). The head shell screw connection hole C (49) on the head shell (13) is connected to the housing screw connection hole A (54) on the housing (24). The large gear (11) connected to the main shaft (5) meshes with the small gear (14) connected to the rotor (17) main shaft.

4. The dust-removing cutting machine according to claim 1, characterized in that, The carbon brush holder A (32), carbon brush A (33), carbon brush cover A (34), and sealing cover A (35) are connected sequentially in the carbon brush holder connection hole A (55) on the housing (24); the carbon brush holder B (36), carbon brush B (37), carbon brush cover B (38), and sealing cover B (39) are connected sequentially in the carbon brush holder connection hole B (59) on the housing (24); the switch mounting position (56) on the housing (24) is connected to the switch (23); the power cord (74) on the linkage socket (29) is inserted into the sheath (30); the sheath (30) is connected to the sheath connection position (60) on the housing (24); the power cord (74) is located in the middle position between the housing screw connection hole B (57) and the power cord clamp (31); the housing screw connection hole C (61) on the housing (24) is connected to the handle screw connection hole (53) on the handle cover (22).

5. The dust-removing cutting machine according to claim 1, characterized in that, The head shell bottom plate connection hole (45) on the head shell (13) is connected to the bottom plate connection hole (70) on the bottom plate (27), and the head shell screw connection hole B (48) on the head shell (13) is connected to the bottom plate height adjustment port (71) on the bottom plate (27) by a wing screw (28).

6. The dust-removing cutting machine according to claim 1, characterized in that, The micro water pump (41) is equipped with a micro water pump power plug (75), a water volume adjustment switch (76), and a water pipe (77). The water nozzle connection port (52) on the head shell (13) is connected to the water nozzle (78) on the micro water pump (41), and the linkage socket hole (73) on the linkage socket (29) is connected to the micro water pump power plug (75) on the micro water pump (41).

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