CN211285454U

CN211285454U - Hand-push sweeper

Info

Publication number: CN211285454U
Application number: CN201921834167.2U
Authority: CN
Inventors: 谢布雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-08-18
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses a hand push machine of sweeping floor, concretely relates to small-size mechanical technical field of sweeping floor, which comprises a vehicle rack, the top of frame one end is equipped with the axletree, the both sides of frame all are equipped with the wheel, two the middle part of wheel respectively with the both ends fixed connection of axletree, the outside at axletree both ends is all overlapped and is equipped with the gear wheel, two the middle part of gear wheel respectively with the lateral wall fixed connection at axletree both ends, one side of axletree is equipped with the pinion shaft. The utility model discloses a be equipped with spacing wheel, cantilever connecting rod, first cantilever connecting rod bearing, second cantilever connecting rod bearing, pinion and gear wheel, compare with prior art, be favorable to when cleaning the road surface that unsmooth or highly change, the brush of sweeping can keep parallel and nearer distance with ground for clean effectually, convenient operation, work efficiency is high, and novel structure, simple structure, the practicality is higher.

Description

Hand-push sweeper

Technical Field

The utility model relates to a small-size mechanical technical field of sweeping the floor, more specifically say, the utility model relates to a hand push machine of sweeping the floor.

Background

Along with the improvement of people's standard of living, more and more people all begin to use the machine of sweeping the floor to replace the manual work to clean, and the hand push machine of sweeping the floor is one kind and need not power, just can clean rubbish such as leaf, dust, tiny particle through the hand push walking machine of sweeping the floor, and power consumptive, not oily, can clean, cleans efficiently, and hand push machine of sweeping the floor appearance design is exquisite, the noise is little, can not cause environmental pollution, can also avoid dust phenomenon of flying upward.

However, the conventional hand-push sweeper is only suitable for sweeping horizontal ground in public places, and has the defects of poor sweeping effect and incapability of sweeping operation on irregular road surfaces, random road surface height change and uneven road surfaces which are always generated during road surface construction and maintenance, and the like.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a hand push machine of sweeping floor, through being equipped with spacing wheel, cantilever connecting rod, first cantilever connecting rod bearing, second cantilever connecting rod bearing, pinion and gear wheel, compare with prior art, be favorable to when cleaning the road surface that unevenness or highly change, the brush of sweeping is can keep parallel and nearer distance with ground for clean effectually, and convenient operation, high working efficiency, and novel structure, moreover, the steam generator is simple in structure, and the practicality is higher.

In order to achieve the above object, the utility model provides a following technical scheme: a hand-push sweeper comprises a frame, wherein a wheel shaft is arranged above one end of the frame, wheels are arranged on two sides of the frame, the middle parts of the two wheels are fixedly connected with two ends of the wheel shaft respectively, large gears are sleeved on the outer sides of two ends of the wheel shaft respectively, the middle parts of the two large gears are fixedly connected with the outer side walls of two ends of the wheel shaft respectively, a pinion shaft is arranged on one side of the wheel shaft, frame bearings located on one sides of the wheels are arranged at two ends of the pinion shaft respectively, the inner side wall of each frame bearing is in interference fit with the outer side wall of each pinion shaft, two ends of each pinion shaft are movably connected with two sides of the frame respectively through the frame bearings, a plurality of transverse sweeping brushes are arranged on the outer side of the pinion shaft, one sides of the transverse sweeping brushes are fixedly connected with the outer side walls of the pinion shaft respectively, and pinions, the middle parts of the two small gears are respectively and fixedly connected with the outer side walls at the two ends of the small gear shaft, and the two small gears are respectively in meshing transmission with the two large gears;

the two ends of the wheel shaft are respectively sleeved with a first cantilever connecting rod bearing positioned on one side of the big gear, the two ends of the pinion shaft are respectively sleeved with a second cantilever connecting rod bearing positioned on one side of the small gear, the inner side walls of the first cantilever connecting rod bearing and the second cantilever connecting rod bearing are respectively in interference fit with the outer side walls of the wheel shaft and the small gear, two sides between the wheel shaft and the small gear are respectively provided with a cantilever connecting rod, and the inner side walls of the two ends of the two cantilever connecting rods are respectively in interference fit with the outer side walls of the first cantilever connecting rod bearing and the second cantilever connecting rod bearing on the two sides;

the two sides of the other end of the frame are respectively provided with a support rod, one end of each support rod is hinged with the upper end of the frame, the other end of each support rod is provided with a vertical sweeping brush, the upper end of each vertical sweeping brush is rotatably connected with the other end of each support rod, the upper ends of the two vertical sweeping brushes are respectively provided with a small belt pulley, the middle parts of the two small belt pulleys are respectively fixedly connected with the outer side walls of the upper ends of the two vertical sweeping brushes, the two ends of the wheel axle are respectively sleeved with a large belt pulley positioned on one side of a wheel, the middle part of the large belt pulley is fixedly connected with the outer side wall of the wheel axle, a belt is arranged between the small belt pulley and the large belt pulley, the small belt pulley and the large belt pulley are connected through belt transmission, the two sides of one end of the frame are respectively provided with a limiting wheel, the, the upper end of the front small wheel is fixedly connected with the middle of the frame, the inner side of the frame is provided with a dust box, and the bottom end of the dust box is detachably connected with the two ends of the inner side of the frame.

In a preferred embodiment, a rear cover is arranged above the frame, the bottom end of the rear cover is fixedly connected with the upper end of the frame, one end of the rear cover is attached to one end of the dust collection box, and the plurality of transverse sweeping brushes are located on the inner side of the rear cover.

In a preferred embodiment, the two sides of the rear cover are both provided with fixing rods, the upper ends of the two fixing rods are provided with handrail tubes, the lower ends of the two fixing rods are respectively and fixedly connected with the upper end of the frame, and the upper ends of the two fixing rods are respectively connected with the two ends of the handrail tubes through hinges.

In a preferred embodiment, both ends of handrail tube all are equipped with handrail tube fixed knob, two handrail tube fixed knob respectively with the upper end swing joint of two dead levers through the screw thread, just one side of handrail tube fixed knob and the lateral wall laminating of handrail tube.

In a preferred embodiment, a frame adjusting knob is arranged above each of the two limiting wheels, and the bottom ends of the two frame adjusting knobs are respectively fixedly connected with the upper ends of the two limiting wheels.

In a preferred embodiment, the outer sides of the two large belt pulleys are sleeved with large belt pulley shields, and the bottom ends of the two large belt pulley shields are fixedly connected with the upper end of the frame.

In a preferred embodiment, a small belt pulley shield is sleeved above each of the two small belt pulleys, and one end of the small belt pulley shield is hinged with one end of the large belt pulley shield.

In a preferred embodiment, vertical sweeper adjusting knobs are arranged above the two small belt pulley shields, and the lower ends of the vertical sweeper adjusting knobs penetrate through the small belt pulley shields and are movably connected with one ends of the vertical sweepers through threads.

The utility model discloses a technological effect and advantage:

1. compared with the prior art, the utility model is provided with the limiting wheel, the cantilever connecting rod, the first cantilever connecting rod bearing, the second cantilever connecting rod bearing, the pinion and the gearwheel, so that the transverse sweeping brush can keep parallel and closer distance with the ground when sweeping uneven or height-changed road surfaces, thereby having good sweeping effect, convenient operation, high working efficiency, novel modeling, simple structure and higher practicability;

2. the utility model discloses a be equipped with frame adjust knob and found brush adjust knob, compare with prior art, be favorable to conveniently adjusting the height of frame for the hand push machine of sweeping the floor can adapt to different road conditions, and adaptability is good.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a cross-sectional view taken along line a-a of fig. 2 according to the present invention.

Fig. 4 is a cross-sectional view taken along line B-B of fig. 2 according to the present invention.

The reference signs are: the device comprises a frame 1, a handrail tube 2, a frame 3 adjusting knob, a handrail tube 4 fixing knob, a rear cover 5, a large belt pulley 6, a limit wheel 7, a wheel shaft 8, a wheel 9, a large belt pulley guard 10, a transverse sweeping brush 11, a belt 12, a small belt pulley 13, a vertical sweeping brush 14, a small belt pulley guard 15, a front small wheel 16, a vertical sweeping brush 17 adjusting knob, a dust collecting box 18, a pinion shaft 19, a cantilever connecting rod 20, a frame bearing 21-1, a first cantilever connecting rod bearing 21-2, a second cantilever connecting rod bearing 21-3, a pinion 22, a large gear 23, a fixing rod 24 and a support rod 25.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a hand-push sweeper, which comprises a frame 1, wherein a wheel shaft 8 is arranged above one end of the frame 1, wheels 9 are arranged on both sides of the frame 1, the middle parts of the wheels 9 are respectively fixedly connected with both ends of the wheel shaft 8, the outer sides of both ends of the wheel shaft 8 are respectively sleeved with a large gear 23, the middle parts of the large gears 23 are respectively fixedly connected with the outer side walls of both ends of the wheel shaft 8, one side of the wheel shaft 8 is provided with a small gear shaft 19, both ends of the small gear shaft 19 are respectively provided with a frame bearing 21-1 positioned on one side of the wheel 9, the inner side wall of the frame bearing 21-1 is in interference fit with the outer side wall of the small gear shaft 19, both ends of the small gear shaft 19 are respectively movably connected with both sides of the frame 1 through the frame bearings 21-1, the outer side of the small gear shaft 19 is, one side of each of the transverse sweeping brushes 11 is fixedly connected with the outer side wall of a pinion shaft 19, the outer sides of two ends of the pinion shaft 19 are respectively sleeved with a pinion 22, the middle parts of the two pinions 22 are respectively fixedly connected with the outer side walls of two ends of the pinion shaft 19, and the two pinions 22 are respectively in meshing transmission with the two large gears 23;

the two ends of the wheel shaft 8 are respectively sleeved with a first cantilever connecting rod bearing 21-2 positioned on one side of a large gear 23, the two ends of the small gear shaft 19 are respectively sleeved with a second cantilever connecting rod bearing 21-3 positioned on one side of a small gear 22, the inner side walls of the first cantilever connecting rod bearing 21-2 and the second cantilever connecting rod bearing 21-3 are respectively in interference fit with the outer side walls of the wheel shaft 8 and the small gear shaft 19, the two sides between the wheel shaft 8 and the small gear shaft 19 are respectively provided with a cantilever connecting rod 20, and the inner side walls of the two ends of the two cantilever connecting rods 20 are respectively in interference fit with the outer side walls of the first cantilever connecting rod bearing 21-2 and the second cantilever connecting rod bearing 21-3 on the two;

two sides of the other end of the frame 1 are respectively provided with a support rod 25, one end of each of the two support rods 25 is hinged with the upper end of the frame 1, the other end of each of the two support rods 25 is provided with a vertical sweeping brush 14, the upper end of each vertical sweeping brush 14 is rotatably connected with the other end of each support rod 25, the upper ends of the two vertical sweeping brushes 14 are respectively provided with a small belt pulley 13, the middle parts of the two small belt pulleys 13 are respectively fixedly connected with the outer side walls of the upper ends of the two vertical sweeping brushes 14, two ends of the wheel axle 8 are respectively sleeved with a large belt pulley 6 positioned on one side of the wheel 9, the middle part of the large belt pulley 6 is fixedly connected with the outer side wall of the wheel axle 8, a belt 12 is arranged between the small belt pulley 13 and the large belt pulley 6, the small belt pulley 13 is in transmission connection with the large belt pulley 6 through the belt 12, two sides of one end of, the middle part of the other end of the frame 1 is provided with a front small wheel 16, the upper end of the front small wheel 16 is fixedly connected with the middle part of the frame 1, the inner side of the frame 1 is provided with a dust box 18, and the bottom end of the dust box 18 is detachably connected with the two ends of the inner side of the frame 1.

The frame is characterized in that a rear cover 5 is arranged above the frame 1, the bottom end of the rear cover 5 is fixedly connected with the upper end of the frame 1, one end of the rear cover 5 is attached to one end of a dust collection box 18, and the transverse sweeping brushes 11 are located on the inner side of the rear cover 5.

The two sides of the rear cover 5 are provided with fixing rods 24, the upper ends of the two fixing rods 24 are provided with the handrail tubes 2, the lower ends of the two fixing rods 24 are fixedly connected with the upper end of the frame 1, and the upper ends of the two fixing rods 24 are connected with the two ends of the handrail tubes 2 through hinges.

The both ends of handrail pipe 2 all are equipped with handrail pipe fixed knob 4, two handrail pipe fixed knob 4 respectively with the upper end swing joint of two dead levers 24 through the screw thread, just one side of handrail pipe fixed knob 4 and the lateral wall laminating of handrail pipe 2.

As shown in fig. 1 to 4, the embodiment specifically is as follows: when cleaning operation is carried out, when the handrail tube 2 is pushed to move forwards, the wheels 9 drive the wheel shafts 8 to drive the two large gears 23 to rotate, the large gears 23 drive the small gears 22 to rotate, so that the small gear shafts 19 and the transverse sweeping brushes 11 rotate, and then the ground is cleaned, in the rotating process of the wheels 9, the vertical sweeping brushes 14 are driven to rotate through the large belt pulleys 6, the belt 12 and the small belt pulleys 13, so that the vertical sweeping brushes 14 clean the ground in front, when the road surface is uneven or the height changes, the limiting wheels 7 pass through a relatively flat position, and when the wheels 9 bump, the wheels 9 only drive the wheel shafts 8 to move under the action of the cantilever connecting rods 20, the small gear shafts 19 are not influenced by the wheel shafts 8, namely, the cantilever connecting rods 20 and the limiting wheels 7 can keep the transverse sweeping brushes 11 parallel to the ground and at a relatively short distance, so as to achieve road surface cleaning operation, the garbage cleaned by the transverse sweeper 11 enters the dust collection box 18, the dust collection box 18 is detachably connected with the frame 1 through bolts, after cleaning is completed, the dust collection box 18 is detached and dumped, the garbage is dumped, and the angle between the fixed rod 24 and the handrail tube 2 is adjusted by arranging the handrail tube fixing knob 4, so that the hand sweeper can adapt to people with different heights to enable the hand sweeper to be favorable for cleaning uneven or highly-changed road surfaces, the transverse sweeper 11 can be parallel to and close to the ground, the sweeping effect is good, the operation is convenient, the working efficiency is high, the modeling is novel, the structure is simple, the practicability is high, the implementation mode specifically solves the problems that the existing hand sweeper is only suitable for cleaning horizontal ground in public places, and random road surface height changes which exist all the time in road surface construction and maintenance and uneven surfaces, And rough road surfaces, etc., and have the defects of poor cleaning effect and incapability of cleaning operation.

And the frame adjusting knobs 3 are arranged above the two limiting wheels 7, and the bottom ends of the two frame adjusting knobs 3 are respectively fixedly connected with the upper ends of the two limiting wheels 7.

Two the outside cover of big belt pulley 6 is equipped with big belt pulley guard shield 10, two the bottom of big belt pulley guard shield 10 all with the upper end fixed connection of frame 1.

Two the top of belt lace wheel 13 all is equipped with belt lace wheel guard shield 15, belt lace wheel guard shield 15's one end is articulated with the one end of big belt lace wheel guard shield 10.

Two standing sweeper adjusting knobs 17 are arranged above the small belt pulley protective covers 15, and the lower ends of the standing sweeper adjusting knobs 17 penetrate through the small belt pulley protective covers 15 and are movably connected with one ends of the standing wipers 14 through threads.

As shown in fig. 1, the embodiment specifically includes: through being equipped with frame adjust knob 3 and found brush adjust knob 17, can adjust spacing round 7 and the height that found brush 14 and leave ground according to the road conditions, improve adaptability, through being equipped with belt lace wheel guard shield 15 and big belt pulley guard shield 10, can protect belt lace wheel 13, belt 12 and big belt pulley 6, be favorable to conveniently adjusting spacing round 7 and the height that found brush 14 and leave ground promptly for the hand push machine of sweeping the floor can adapt to different road conditions, and adaptability is good.

The utility model discloses the theory of operation:

referring to the attached drawings 1-4 of the specification, when the handrail tube 2 is pushed to move forward during cleaning operation, the wheel 9 drives the wheel shaft 8 to drive the two large gears 23 to rotate, the large gears 23 drive the small gears 22 to rotate, so that the small gear shaft 19 and the transverse sweeping brush 11 rotate to further sweep the ground, in the process of rotating the wheel 9, the vertical sweeping brush 14 is driven to rotate through the large belt pulley 6, the belt 12 and the small belt pulley 13, so that the vertical sweeping brush 14 sweeps the ground in front, when the road surface is uneven or the height changes, the limiting wheel 7 passes through a relatively flat position, and when the wheel 9 bumps, the wheel 9 only drives the wheel shaft 8 to move under the action of the cantilever connecting rod 20, and the small gear shaft 19 is not influenced by the wheel shaft 8, namely, the cantilever connecting rod 20 and the limiting wheel 7 can keep the transverse sweeping brush 11 parallel to the ground and at a relatively short distance, therefore, the road surface cleaning operation is achieved, the garbage cleaned by the transverse sweeper 11 enters the dust box 18, the dust box 18 is detachably connected with the frame 1 through bolts, after the cleaning is finished, the dust box 18 is detached, the garbage is poured out, and the angle between the fixing rod 24 and the handrail tube 2 is adjusted through the handrail tube fixing knob 4, so that the hand-push sweeper can adapt to people with different heights;

further, referring to the attached figure 1 of the specification, the height of the limiting wheel 7 and the vertical sweeping brush 14 from the ground can be adjusted according to road conditions by arranging the frame adjusting knob 3 and the vertical sweeping brush adjusting knob 17, the adaptability is improved, and the small belt pulley 13, the belt 12 and the large belt pulley 6 can be protected by arranging the small belt pulley shield 15 and the large belt pulley shield 10.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a hand push sweeper, includes frame (1), its characterized in that: a wheel shaft (8) is arranged above one end of the frame (1), wheels (9) are arranged on two sides of the frame (1), the middle parts of the two wheels (9) are fixedly connected with two ends of the wheel shaft (8) respectively, large gears (23) are sleeved on the outer sides of the two ends of the wheel shaft (8), the middle parts of the two large gears (23) are fixedly connected with the outer side walls of the two ends of the wheel shaft (8) respectively, a small gear shaft (19) is arranged on one side of the wheel shaft (8), frame bearings (21-1) located on one sides of the wheels (9) are arranged on two ends of the small gear shaft (19), the inner side walls of the frame bearings (21-1) are in interference fit with the outer side walls of the small gear shaft (19), two ends of the small gear shaft (19) are movably connected with two sides of the frame (1) through the frame bearings (21-1, a plurality of transverse wipers (11) are arranged on the outer side of the pinion shaft (19), one sides of the transverse wipers (11) are fixedly connected with the outer side wall of the pinion shaft (19), pinions (22) are sleeved on the outer sides of two ends of the pinion shaft (19), the middle parts of the two pinions (22) are fixedly connected with the outer side walls of two ends of the pinion shaft (19), and the two pinions (22) are respectively in meshing transmission with the two large gears (23);

the two ends of the wheel shaft (8) are respectively sleeved with a first cantilever connecting rod bearing (21-2) positioned on one side of the large gear (23), the two ends of the small gear shaft (19) are respectively sleeved with a second cantilever connecting rod bearing (21-3) positioned on one side of the small gear (22), the inner side walls of the first cantilever connecting rod bearing (21-2) and the second cantilever connecting rod bearing (21-3) are respectively in interference fit with the outer side walls of the wheel shaft (8) and the small gear shaft (19), two cantilever connecting rods (20) are respectively arranged on two sides between the wheel shaft (8) and the small gear shaft (19), and the inner side walls of two ends of the two cantilever connecting rods (20) are respectively in interference fit with the outer side walls of the first cantilever connecting rod bearing (21-2) and the second cantilever connecting rod bearing (21-3) on two sides;

the two sides of the other end of the frame (1) are respectively provided with a support rod (25), one end of each support rod (25) is hinged with the upper end of the frame (1), the other end of each support rod (25) is provided with a vertical sweeping brush (14), the upper end of each vertical sweeping brush (14) is rotatably connected with the other end of each support rod (25), the upper ends of the two vertical sweeping brushes (14) are respectively provided with a small belt pulley (13), the middle parts of the two small belt pulleys (13) are respectively fixedly connected with the outer side walls of the upper ends of the two vertical sweeping brushes (14), two ends of the wheel axle (8) are respectively sleeved with a large belt pulley (6) positioned on one side of a wheel (9), the middle part of the large belt pulley (6) is fixedly connected with the outer side wall of the wheel axle (8), a belt (12) is arranged between each small belt pulley (13) and the large belt pulley (6), the small belt pulleys (13) are in transmission connection with, the utility model discloses a bicycle frame, including frame (1), both sides of frame (1) one end all are equipped with spacing wheel (7), two the both sides swing joint of screw thread and frame (1) is passed through to the upper end of spacing wheel (7), the middle part of the frame (1) other end is equipped with preceding steamboat (16), the upper end of preceding steamboat (16) and the middle part fixed connection of frame (1), the inboard of frame (1) is equipped with laying dust case (18), the bottom of laying dust case (18) can be dismantled with the both ends of frame (1) inboard and be connected.

2. The hand-propelled sweeper of claim 1, wherein: the utility model discloses a cleaning vehicle, including frame (1), back lid (5) are equipped with to the top of frame (1), the bottom of back lid (5) and the upper end fixed connection of frame (1), the one end of back lid (5) is laminated with the one end of laying dust case (18), a plurality of horizontal brush (11) are located the inboard of back lid (5).

3. The hand-propelled sweeper of claim 2, wherein: the two sides of the rear cover (5) are provided with fixing rods (24), the upper ends of the fixing rods (24) are provided with handrail tubes (2), the lower ends of the fixing rods (24) are fixedly connected with the upper end of the frame (1) respectively, and the upper ends of the fixing rods (24) are connected with the two ends of the handrail tubes (2) through hinges respectively.

4. The hand-propelled sweeper according to claim 3, wherein: the both ends of handrail pipe (2) all are equipped with handrail pipe fixed knob (4), two handrail pipe fixed knob (4) pass through the screw thread respectively with the upper end swing joint of two dead levers (24), just one side of handrail pipe fixed knob (4) is laminated with the lateral wall of handrail pipe (2).

5. The hand-propelled sweeper of claim 1, wherein: and the two limiting wheels (7) are respectively provided with a frame adjusting knob (3) above, and the bottom ends of the two frame adjusting knobs (3) are respectively fixedly connected with the upper ends of the two limiting wheels (7).

6. The hand-propelled sweeper of claim 1, wherein: two the outside cover of big belt pulley (6) is equipped with big belt pulley guard shield (10), two the bottom of big belt pulley guard shield (10) all with the upper end fixed connection of frame (1).

7. The hand-propelled sweeper of claim 6, wherein: two the top of belt lace wheel (13) all is equipped with belt lace wheel guard shield (15), the one end of belt lace wheel guard shield (15) is articulated with the one end of big belt lace wheel guard shield (10).

8. The hand-propelled sweeper of claim 7, wherein: two the top of belt lace wheel guard shield (15) all is equipped with upright brush adjustment knob (17), the lower extreme of founding brush adjustment knob (17) runs through belt lace wheel guard shield (15) and stands the one end of brush (14) and pass through screw thread swing joint.