阅读说明：本技术 一种用于园林园艺的安全可靠性高的割草设备 (A equipment of mowing that safe and reliable nature is high for gardens ) 是由 齐宽宽 于 2019-11-07 设计创作，主要内容包括：本发明涉及一种用于园林园艺的安全可靠性高的割草设备,包括车体、把手、电机、转轴、第一轴承、四个移动轮和若干刀片,还包括防护机构和清洁机构,所述清洁机构包括水箱、抽水泵、进水管、出水管、连接盒和若干喷水管,所述防护机构包括传动组件、往复组件、连接块、第一齿条、第一齿轮连接轴、第二轴承、连杆和刮板,该用于园林园艺的安全可靠性高的割草设备通过清洁机构,实现了对刀片清洁的功能,无需人为清理,提高了清洁的便捷性,通过防护机构,将地面上的石粒推开,减小了刀片与石粒接触的几率,从而减小了刀片损坏的几率,提高了设备的安全可靠性。(The invention relates to a mowing device with high safety and reliability for gardening, which comprises a vehicle body, a handle, a motor, a rotating shaft, a first bearing, four moving wheels, a plurality of blades, a protective mechanism and a cleaning mechanism, the cleaning mechanism comprises a water tank, a water suction pump, a water inlet pipe, a water outlet pipe, a connecting box and a plurality of water spray pipes, the protection mechanism comprises a transmission component, a reciprocating component, a connecting block, a first rack, a first gear connecting shaft, a second bearing, a connecting rod and a scraper, the mowing equipment with high safety and reliability for garden gardening realizes the function of cleaning the blade through the cleaning mechanism without manual cleaning, improves the cleaning convenience, through the protection mechanism, the stone particles on the ground are pushed away, and the probability of contact between the blade and the stone particles is reduced, so that the probability of damage to the blade is reduced, and the safety and reliability of the equipment are improved.)

1. The utility model provides a mowing equipment that is used for gardens that fail-safe nature is high, includes automobile body (1), handle (3), motor (4), pivot (5), first bearing, four remove wheel (2) and a plurality of blade (6), and four wheels set up the four corners department in the below of automobile body (1) respectively, handle (3) are fixed in one side of automobile body (1), top in automobile body (1) is fixed in motor (4), first bearing fixes the bottom in automobile body (1), the below of automobile body (1) is equipped with the opening, motor (4) are connected with the one end transmission of pivot (5), the other end of pivot (5) passes the opening and sets up the below of automobile body (1), blade (6) circumference is evenly fixed on the other end of pivot (5), pivot (5) and the inner circle fixed connection of first bearing, the electric bicycle is characterized by further comprising a protection mechanism and a cleaning mechanism, wherein the protection mechanism is arranged on one side, far away from the handle (3), of the bicycle body (1), and the cleaning mechanism is arranged on one side, close to the handle (3), of the bicycle body (1);

the cleaning mechanism comprises a water tank (7), a water suction pump (9), a water inlet pipe (8), a water outlet pipe (10), a connecting box (11) and a plurality of water spray pipes (12), wherein the water tank (7), the connecting box (11) and the water suction pump (9) are fixed at the bottom in the vehicle body (1), the water suction pump (9) is communicated with the bottom in the water tank (7) through the water inlet pipe (8), the water suction pump (9) is communicated with the connecting box (11) through the water outlet pipe (10), the water spray pipes (12) are uniformly distributed below the connecting box (11), the connecting box (11) is communicated with the outside of the vehicle body (1) through the water spray pipes (12), and the water suction pump (9) is electrically connected with the PLC;

the protection mechanism comprises a transmission assembly, a reciprocating assembly, a connecting block (20), a first rack (21), a first gear (22), a connecting shaft (23), a second bearing, a connecting rod (24) and a scraper (25), wherein the rotating shaft (5) is connected with the reciprocating assembly through the transmission assembly, the reciprocating assembly is connected with one side of the connecting block (20), one side of the car body (1), which is far away from the handle (3), is provided with a strip-shaped opening, the other side of the connecting block (20) penetrates through the strip-shaped opening to be arranged outside the car body (1), the other side of the connecting block (20) is fixedly connected with the first rack (21), the second bearing is fixed on one side, which is close to the strip-shaped opening, of the car body (1), two ends of the connecting shaft (23) are respectively fixedly connected with one end of the inner ring of the second bearing and one end of the connecting rod (24), and the other end of, the first gear (22) is fixed on the connecting shaft (23), and the first gear (22) is meshed with the first rack (21).

2. The mowing device with high safety and reliability for garden gardening according to claim 1, wherein the transmission assembly comprises a third bearing, a transmission shaft (16), a belt (15) and two driving wheels (14), the third bearing is fixed at the bottom in the vehicle body (1), one end of the transmission shaft (16) is fixedly connected with an inner ring of the third bearing, the other end of the transmission shaft (16) is connected with the reciprocating assembly, the transmission shaft (16) is arranged in parallel with the rotating shaft (5), the two driving wheels (14) are respectively fixedly connected with the rotating shaft (5) and the transmission shaft (16), and the two driving wheels (14) are connected through the belt (15).

3. The mowing apparatus with high safety and reliability for garden gardening according to claim 2, wherein the reciprocating assembly comprises a half gear (17), a reciprocating frame (19) and two second racks (18), one end of the transmission shaft (16) far away from the third bearing is fixedly connected with the half gear (17), the two second racks (18) are respectively and fixedly connected with the inner walls of two sides of the reciprocating frame (19), the half gear (17) is arranged between the two second racks (18), the half gear (17) is meshed with the second racks (18), and one side of the connecting block (20) far away from the first rack (21) is fixedly connected with the reciprocating frame (19).

4. The safe and reliable mowing device for garden gardening according to claim 1, wherein the protection mechanism further comprises a guide rod (28), two ends of the guide rod (28) are fixedly connected with the inner walls of two sides of the vehicle body (1) respectively, a small hole is formed in the connecting block (20), the guide rod (28) penetrates through the small hole, and the connecting block (20) is connected with the guide rod (28) in a sliding mode.

5. The mowing apparatus with high safety and reliability for garden gardening according to claim 4, wherein two limiting rods (29) are fixed to the inner wall of the small hole of the connecting block (20), the two limiting rods (29) are symmetrically arranged about the axis of the small hole, the guide rod (28) is provided with two grooves, the grooves correspond to the limiting rods (29) one by one, the limiting rods (29) are arranged inside the grooves, and the limiting rods (29) are slidably connected with the grooves.

6. The mowing apparatus with high safety and reliability for gardening according to claim 1, wherein a filter screen (13) is fixed to one end of the water spraying pipe (12) far from the connecting box (11).

7. The safe and reliable mowing apparatus for gardening according to claim 1, wherein the first gear (22) is coated with grease.

8. The safe and reliable mowing apparatus for gardening according to claim 1, wherein a liquid level sensor (27) is arranged in the water tank (7), and the liquid level sensor (27) is electrically connected with the PLC.

9. The gardening safety-reliable mowing apparatus according to claim 1, wherein the motor (4) is a servo motor.

10. The safe and reliable mowing equipment for garden gardening according to claim 1, wherein an operation board (26) is arranged on the vehicle body (1), a display screen and a plurality of keys are arranged on the operation board (26), and the display screen and the keys are electrically connected with the PLC.

Technical Field

The invention relates to the field of gardening and gardening, in particular to a mowing device with high safety and reliability for gardening and gardening.

Background

The mower is a mechanical tool for trimming lawn and vegetation, and is composed of cutter head, engine, walking wheels, walking mechanism, blades, handrail and control unit.

After the existing mower finishes trimming the lawn, the blade needs to be manually cleaned, the cleaning process is complex, the blade easily injures a user, the convenience of cleaning is reduced, and moreover, when the existing mower is used for mowing, due to the fact that stone grains exist on the ground, the blade is easy to contact with the stone grains, the probability of blade damage is increased, and the safety and reliability of the existing mower are reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the mowing device for garden gardening is high in safety and reliability.

The technical scheme adopted by the invention for solving the technical problems is as follows: a mowing device with high safety and reliability for garden gardening comprises a vehicle body, a handle, a motor, a rotating shaft, a first bearing, four moving wheels and a plurality of blades, wherein the four wheels are respectively arranged at four corners below the vehicle body, the handle is fixed on one side of the vehicle body, the motor is fixed on the top in the vehicle body, the first bearing is fixed on the bottom in the vehicle body, an opening is arranged below the vehicle body, the motor is in transmission connection with one end of the rotating shaft, the other end of the rotating shaft penetrates through the opening to be arranged below the vehicle body, the blades are uniformly fixed on the other end of the rotating shaft in the circumferential direction, the rotating shaft is fixedly connected with the inner ring of the first bearing, the vehicle body is internally provided with a PLC, the motor is electrically connected with the PLC, the vehicle body also comprises a protection mechanism and a cleaning mechanism, the protection mechanism is arranged on one side of the vehicle body far away from the handle, and the cleaning mechanism is arranged on one side of the vehicle body close to the handle;

the cleaning mechanism comprises a water tank, a water suction pump, a water inlet pipe, a water outlet pipe, a connecting box and a plurality of water spray pipes, wherein the water tank, the connecting box and the water suction pump are all fixed at the bottom in the vehicle body;

protection machanism includes drive assembly, reciprocal subassembly, connecting block, first rack, first gear, connecting axle, second bearing, connecting rod and scraper blade, the pivot is passed through drive assembly and is connected with reciprocal subassembly, reciprocal subassembly is connected with one side of connecting block, one side of keeping away from the handle of automobile body is equipped with the bar mouth, the opposite side of connecting block passes the bar mouth and sets up the outside at the automobile body, the opposite side and the first rack fixed connection of connecting block, the second bearing is fixed on one side that is close to the bar mouth of automobile body, the both ends of connecting axle respectively with the inner circle of second bearing and the one end fixed connection of connecting rod, the other end and the scraper blade fixed connection of connecting rod, first gear is fixed on the connecting axle, first gear and first rack toothing.

As preferred, for the transmission power, transmission assembly includes third bearing, transmission shaft, belt and two drive wheels, the bottom in the automobile body is fixed to the third bearing, the one end of transmission shaft and the inner circle fixed connection of third bearing, the other end and the reciprocal subassembly of transmission shaft are connected, transmission shaft and pivot parallel arrangement, two drive wheels respectively with pivot and transmission shaft fixed connection, two drive wheels pass through the belt and are connected.

Preferably, in order to drive the connecting block to move in a reciprocating manner, the reciprocating assembly comprises a half gear, a reciprocating frame and two second racks, one end, far away from the third bearing, of the transmission shaft is fixedly connected with the half gear, the two second racks are fixedly connected with the inner walls of the two sides of the reciprocating frame respectively, the half gear is arranged between the two second racks and meshed with the second racks, and one side, far away from the first rack, of the connecting block is fixedly connected with the reciprocating frame.

Preferably, in order to limit the moving direction of the connecting block, the protection mechanism further comprises a guide rod, two ends of the guide rod are fixedly connected with the inner walls of two sides of the vehicle body respectively, a small hole is formed in the connecting block, the guide rod penetrates through the small hole, and the connecting block is connected with the guide rod in a sliding mode.

Preferably, in order to improve the moving direction of the connecting block, two limiting rods are fixed on the inner wall of the small hole of the connecting block, the two limiting rods are symmetrically arranged about the axis of the small hole, two grooves are formed in the guide rod, the grooves correspond to the limiting rods one to one, the limiting rods are arranged inside the grooves, and the limiting rods are connected with the grooves in a sliding mode.

Preferably, in order to avoid the blockage of the spray pipe, a filter screen is fixed at one end of the spray pipe, which is far away from the connecting box.

Preferably, the first gear is coated with grease in order to make the first gear smoothly rotate.

Preferably, in order to monitor the liquid level in the water tank, a liquid level sensor is arranged in the water tank and is electrically connected with the PLC.

Preferably, the motor is a servo motor for precise and stable operation of the motor.

Preferably, in order to control the equipment to work, an operation board is arranged on the vehicle body, a display screen and a plurality of keys are arranged on the operation board, and the display screen and the keys are electrically connected with the PLC.

The invention has the advantages that the mowing equipment with high safety and reliability for garden gardening realizes the function of cleaning the blade through the cleaning mechanism, does not need manual cleaning, improves the cleaning convenience, is more convenient and more practical compared with the existing cleaning mechanism, pushes away the stone particles on the ground through the protection mechanism, reduces the probability of the contact between the blade and the stone particles, thereby reducing the probability of blade damage and improving the safety and reliability of the equipment.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic structural view of a safe and reliable mowing apparatus for gardening according to the present invention;

FIG. 2 is a plan view of a guard mechanism of the safe and reliable mowing apparatus for gardening of the present invention;

FIG. 3 is a side view of a guard mechanism of the safe and reliable mowing apparatus for gardening of the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 1;

in the figure: 1. the automatic cleaning device comprises a vehicle body, 2. a moving wheel, 3. a handle, 4. a motor, 5. a rotating shaft, 6. a blade, 7. a water tank, 8. a water inlet pipe, 9. a water suction pump, 10. a water outlet pipe, 11. a connecting box, 12. a water spray pipe, 13. a filter screen, 14. a driving wheel, 15. a belt, 16. a transmission shaft, 17. a half gear, 18. a second rack, 19. a reciprocating frame, 20. a connecting block, 21. a first rack, 22. a first gear, 23. a connecting shaft, 24. a connecting rod, 25. a scraper, 26. an operating plate, 27. a liquid level sensor, 28. a guide rod and 29. a limiting rod.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, a mowing apparatus with high safety and reliability for gardening and gardening comprises a vehicle body 1, a handle 3, a motor 4, a rotating shaft 5, a first bearing, four moving wheels 2 and a plurality of blades 6, wherein the four wheels are respectively arranged at four corners below the vehicle body 1, the handle 3 is fixed at one side of the vehicle body 1, the motor 4 is fixed at the top of the vehicle body 1, the first bearing is fixed at the bottom of the vehicle body 1, an opening is arranged below the vehicle body 1, the motor 4 is in transmission connection with one end of the rotating shaft 5, the other end of the rotating shaft 5 penetrates through the opening and is arranged below the vehicle body 1, the blades 6 are uniformly fixed at the other end of the rotating shaft 5 in the circumferential direction, the rotating shaft 5 is fixedly connected with an inner ring of the first bearing, a PLC is arranged in the vehicle body 1, the motor 4 is electrically connected with the PLC, and further, the protection mechanism is arranged on one side of the vehicle body 1 far away from the handle 3, and the cleaning mechanism is arranged on one side of the vehicle body 1 close to the handle 3;

a PLC, i.e., a programmable logic controller, which employs a programmable memory for storing therein a program, executing instructions for user-oriented operations such as logic operation, sequence control, timing, counting, and arithmetic operation, and controlling various types of machines or production processes through digital or analog input/output, is essentially a computer dedicated for industrial control, has a hardware structure substantially the same as that of a microcomputer, and is generally used for data processing and instruction reception and output for realizing central control.

This a mowing equipment that safe and reliable nature is high for gardens passes through clean mechanism, has realized the clear function of blade 6, need not artificial clearance, has improved clear convenience, through protection machanism, pushes away subaerial stone grain, has reduced the probability of blade 6 with the stone grain contact to reduce the probability that blade 6 damaged, improved the safe and reliable nature of equipment.

As shown in fig. 1, the cleaning mechanism includes a water tank 7, a water pump 9, a water inlet pipe 8, a water outlet pipe 10, a connection box 11 and a plurality of water spray pipes 12, the water tank 7, the connection box 11 and the water pump 9 are all fixed at the bottom inside the vehicle body 1, the water pump 9 is communicated with the bottom inside the water tank 7 through the water inlet pipe 8, the water pump 9 is communicated with the connection box 11 through the water outlet pipe 10, the water spray pipes 12 are uniformly distributed below the connection box 11, the connection box 11 is communicated with the outside of the vehicle body 1 through the water spray pipes 12, and the water pump 9 is electrically connected with the PLC;

when cleaning, the water suction pump 9 is controlled to work, clean water in the water tank 7 is guided into the connecting box 11 through the water outlet pipe 10 through the water inlet pipe 8 and then is sprayed out from the water spraying pipe 12, so that the clean water is sprayed to the blade 6, the blade 6 is cleaned, manual cleaning is not needed, and cleaning convenience is improved.

As shown in fig. 2-3, the guard mechanism includes a transmission assembly, a reciprocating assembly, a connecting block 20, a first rack 21, a first gear 22, a connecting shaft 23, a second bearing, a connecting rod 24 and a scraper 25, the rotating shaft 5 is connected with a reciprocating component through a transmission component, the reciprocating component is connected with one side of a connecting block 20, a strip-shaped opening is arranged on one side of the vehicle body 1 far away from the handle 3, the other side of the connecting block 20 passes through the strip-shaped opening and is arranged outside the vehicle body 1, the other side of the connecting block 20 is fixedly connected with a first rack 21, the second bearing is fixed on one side of the vehicle body 1 close to the strip-shaped opening, both ends of the connecting shaft 23 are respectively fixedly connected with the inner ring of the second bearing and one end of the connecting rod 24, the other end of the connecting rod 24 is fixedly connected with a scraper 25, the first gear 22 is fixed on the connecting shaft 23, and the first gear 22 is meshed with the first rack 21.

When the mowing machine is used for mowing, the motor 4 is controlled to rotate to drive the rotating shaft 5 to rotate, the blade 6 is made to rotate, the mowing machine is used for mowing, the rotating shaft 5 rotates to drive the transmission assembly to work, the connecting block 20 is driven to move in a reciprocating mode through the reciprocating assembly, the first rack 21 is driven to move in a reciprocating mode through the connecting block 20, the first gear 22 is driven to rotate in a reciprocating mode, the connecting rod 24 drives the scraper 25 to swing back and forth, and therefore when the mowing machine moves, the ground stone particles are pushed away in the direction far away from the blade 6 through the back and forth swing of the scraper 25, the probability of contact between the blade 6 and the stone particles is reduced, the probability of damage to the blade 6 is reduced, and the safety and reliability of the mowing machine are improved.

Preferably, in order to transmit power, the transmission assembly comprises a third bearing, a transmission shaft 16, a belt 15 and two driving wheels 14, the third bearing is fixed at the bottom in the vehicle body 1, one end of the transmission shaft 16 is fixedly connected with an inner ring of the third bearing, the other end of the transmission shaft 16 is connected with the reciprocating assembly, the transmission shaft 16 is arranged in parallel with the rotating shaft 5, the two driving wheels 14 are respectively fixedly connected with the rotating shaft 5 and the transmission shaft 16, and the two driving wheels 14 are connected through the belt 15.

Preferably, in order to drive the connecting block 20 to reciprocate, the reciprocating assembly comprises a half gear 17, a reciprocating frame 19 and two second racks 18, one end of the transmission shaft 16, which is far away from the third bearing, is fixedly connected with the half gear 17, the two second racks 18 are respectively fixedly connected with the inner walls of two sides of the reciprocating frame 19, the half gear 17 is arranged between the two second racks 18, the half gear 17 is meshed with the second racks 18, and one side of the connecting block 20, which is far away from the first rack 21, is fixedly connected with the reciprocating frame 19.

When the mowing machine is used for mowing, the motor 4 is controlled to rotate to drive the rotating shaft 5 to rotate, so that the blade 6 is rotated to perform mowing, the rotating shaft 5 is driven to rotate and simultaneously drive the driving wheel 14 fixedly connected with the rotating shaft 5 to rotate, the other driving wheel 14 is driven to rotate through the belt 15, the transmission shaft 16 is driven to rotate, so that the half gear 17 is driven to rotate, the reciprocating frame 19 is driven to move in a reciprocating manner through the meshing of the half gear 17 and the second rack 18, the first rack 21 is driven to move in a reciprocating manner through the connecting block 20, so that the first gear 22 is driven to rotate in a reciprocating manner, the scraper 25 is driven to swing back and forth through the connecting rod 24, so that when the machine moves, the rock particles on the ground are pushed away from the blade 6 through the back and forth swing of the scraper 25, the probability of contact between the blade 6 and the rock particles is reduced, and the, the safety and reliability of the equipment are improved, the swing of the scraper 25 and the rotation of the blade 6 adopt the same driving source, so that the energy is saved, and the environmental protection of the equipment is improved.

As shown in fig. 4, the protection mechanism further includes a guide rod 28, two ends of the guide rod 28 are respectively fixedly connected with the inner walls of two sides of the vehicle body 1, a small hole is formed in the connecting block 20, the guide rod 28 penetrates through the small hole, and the connecting block 20 is slidably connected with the guide rod 28.

By providing the guide bar 28, the moving direction of the connecting block 20 is limited, so that the connecting block 20 is more stable when moving.

Preferably, in order to increase the moving direction of the connecting block 20, two limiting rods 29 are fixed on the inner wall of the small hole of the connecting block 20, the two limiting rods 29 are symmetrically arranged about the axis of the small hole, two grooves are arranged on the guide rod 28, the grooves correspond to the limiting rods 29 one by one, the limiting rods 29 are arranged inside the grooves, and the limiting rods 29 are connected with the grooves in a sliding manner.

When the connecting block 20 moves along the guide rod 28, the limiting rod 29 is driven to move in the groove, so that the moving direction of the connecting block 20 is limited, the connecting block 20 cannot rotate when moving, the moving direction of the connecting block 20 is improved, the reciprocating frame 19 moves stably, the reciprocating frame 19 is prevented from inclining, and the meshing of the second rack 18 and the half gear 17 is influenced.

Preferably, in order to avoid the clogging of the spray pipe 12, a filter screen 13 is fixed to one end of the spray pipe 12 away from the connection box 11.

Through setting up filter screen 13, reduced the probability that the straw bits carried out spray pipe 12 to avoid spray pipe 12 to block up.

Preferably, in order to make the first gear 22 smoothly rotate, the first gear 22 is coated with grease, so that the friction between the first gear 22 and the rack is reduced, the first gear 22 is more smoothly rotated, and the smoothness of the scraper 25 during the swinging is improved.

Preferably, in order to monitor the liquid level in the water tank 7, a liquid level sensor 27 is arranged in the water tank 7, and the liquid level sensor 27 is electrically connected with the PLC.

Through setting up level sensor 27, can detect the liquid level in the water tank 7, when the liquid level value was crossed lowly, send signal gave PLC, and PLC control display screen shows the information that the water level was crossed lowly to can remind the user to add water.

Preferably, the motor 4 is a servo motor in order to make the motor 4 work accurately and stably.

Preferably, in order to control the operation of the equipment, an operation panel 26 is arranged on the vehicle body 1, a display screen and a plurality of keys are arranged on the operation panel 26, and the display screen and the keys are electrically connected with the PLC.

Through setting up the display screen, can display device's operating condition, through setting up the button, can controlgear work to the intelligent degree of equipment has been improved.

When cleaning, the water suction pump 9 is controlled to work, clean water in the water tank 7 is guided into the connecting box 11 through the water outlet pipe 10 through the water inlet pipe 8 and then is sprayed out from the water spraying pipe 12, so that the clean water is sprayed to the blade 6, the blade 6 is cleaned, manual cleaning is not needed, and cleaning convenience is improved. When the mowing machine is used for mowing, the motor 4 is controlled to rotate to drive the rotating shaft 5 to rotate, so that the blade 6 is rotated to perform mowing, the rotating shaft 5 is driven to rotate and simultaneously drive the driving wheel 14 fixedly connected with the rotating shaft 5 to rotate, the other driving wheel 14 is driven to rotate through the belt 15, the transmission shaft 16 is driven to rotate, so that the half gear 17 is driven to rotate, the reciprocating frame 19 is driven to move in a reciprocating manner through the meshing of the half gear 17 and the second rack 18, the first rack 21 is driven to move in a reciprocating manner through the connecting block 20, so that the first gear 22 is driven to rotate in a reciprocating manner, the scraper 25 is driven to swing back and forth through the connecting rod 24, so that when the machine moves, the rock particles on the ground are pushed away from the blade 6 through the back and forth swing of the scraper 25, the probability of contact between the blade 6 and the rock particles is reduced, and the, the safety and reliability of the equipment are improved, the swing of the scraper 25 and the rotation of the blade 6 adopt the same driving source, so that the energy is saved, and the environmental protection of the equipment is improved.

Compared with the prior art, this a mowing equipment that is used for gardens safe and reliable nature is high passes through clean mechanism, realized the clear function of blade 6, need not artificial clearance, the clear convenience has been improved, compare with current clean mechanism, this clean mechanism is clean convenient, high in practicability, through protection machanism, push away subaerial stone grain, the probability of blade 6 with the stone grain contact has been reduced, thereby the probability of blade 6 damage has been reduced, the safe and reliable nature of equipment has been improved, compare with current protection machanism, this protection machanism adopts same driving source with the rotation of blade 6, thereby the energy has been practiced thrift, the feature of environmental protection of equipment has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.