CN109197842A - For the small device to tea place pesticide - Google Patents

Abstract

The invention discloses a kind of small devices for tea place pesticide, including rack；Positioned at a crawler attachment of the central rack, for driving whole equipment fore-aft motion；For driving the driving device of the crawler attachment；Soil-finishing device in the rack, the soil to get up for flattening the crawler attachment band；For storing the explosive box of medical fluid；For the flusher to tea tree sprinkling medical fluid.Vibration caused by the present invention can quickly be absorbed in driving device by setting damping device, to reduce the vibration being transmitted in other equipment, it ensures when spraying insecticide to tea tree, the stability of whole equipment is high, it avoids when carrying out sprinkling drug, flusher causes herbal sprinkling irregular because of vibration.

Description

For the small device to tea place pesticide

Technical field

The invention belongs to Tea planting technical fields, more particularly, to a kind of small device for tea place pesticide.

Background technique

Tealeaves refers to leaf and the tender shoots of tea tree, refers to the leaf for the evergreen shrubs tea tree that can be used for making tea, wherein with Green tea represents the most, during planting to green tea, needs to carry out medical treatment to tea tree, have on tea tree to reduce Insect gnaws tender leaf, destroys the quality of tender leaf, influences the effect that tealeaves comes out in plantation；What is sprayed insecticide to more tealeaves When, it to spray in due course, in different seasons, different pesticides is sprayed for different insect pests.

Chinese patent CN108450448A discloses a kind of sprays insecticide device, including walking vehicle body and is mounted on walking The spraying mechanism of car body top, spraying mechanism left end face is interior to be equipped with the first extended up and down groove, the first bottom portion of groove Extending end, which is connected, is equipped with the second extended to the right groove, and spraying mechanism inner top is equipped with drug storage chamber, the second groove It is equipped with force (forcing) pump in spraying mechanism wall body above right side, is equipped with guide groove, sliding in guide groove on the right side of the second groove in inner wall It is connected with guiding loop bar, is oriented in loop bar right end face and is slidably connected with sliding bar extended to the left, it is sliding Extending end protrudes into the second groove on the left of lever, is symmetrically arranged with arc guide groove in the front and back inner wall of the second groove, arc is led It is rotatably assorted in the second groove of top on the left of to slot and is connected with undercarriage.

Although above-mentioned file equipment is simple, when spraying insecticide, because equipment can generate when operation Biggish vibration, its vibration will cause the amount that sprinkling process flusher moves up and down and makes local sprinkling drug during being somebody's turn to do Greatly, the pesticide volume being sprayed on tea tree is caused to cause pesticide not to be broken off quickly greatly.

Summary of the invention

The present invention for overcome the deficiencies in the prior art, provides that a kind of structure is simple, takes and is conveniently used for spraying to tea place The small device of pesticide.

To achieve the goals above, the invention adopts the following technical scheme: it is a kind of for being set to the small-sized of tea place pesticide It is standby, including

Rack；

Positioned at a crawler attachment of the central rack, for driving whole equipment fore-aft motion；

For driving the driving device of the crawler attachment；

Soil-finishing device in the rack, the soil to get up for flattening the crawler attachment band；

For storing the explosive box of medical fluid；

For the flusher to tea tree sprinkling medical fluid；

For stirring the agitating device of admixing medical solutions in explosive box；

For connecting the damping device of the driving device Yu the rack, the vibration in driving device is absorbed.

Vibration caused by the present invention can quickly be absorbed in driving device by setting damping device, to reduce transmitting Vibration onto other equipment ensures that when spraying insecticide to tea tree, the stability of whole equipment is high, avoids When carrying out sprinkling drug, flusher causes herbal sprinkling irregular because of vibration；By be arranged crawler attachment, into When row is sprayed insecticide, crawler attachment climbing ability is strong, can effectively move on designated position from the foot of the hill；To entire Equipment is suitable for whole landform, practical；And crawler attachment is one, therefore during use, crawler attachment The space occupied is small, thus on suitable traditional tea place Gansu Province spacing, whole equipment stability can be improved；It and because is to use Crawler attachment is moved, should during will not skid in motion process, therefore both can stable movement upwards, can also be stable It moves downward, when spilling medicine, has saved manpower；And soil-finishing device is set then when crawler attachment moves in the past, it can The soil that crawler belt takes up is paved again, so that the soil overall leveling between tea tree, therefore when spray, it can be effective It avoids soil from being destroyed and influences spraying next time；And setting soil-finishing device can also be supported whole equipment, protect Whole equipment is held when movement, stability is high, situations such as will not toppling over；And the soil-finishing device also for people it is straight It goes to the station to meet somebody and stands on soil-finishing device, to move ahead together with moving connectivity device, manpower should have been saved in the process.

Preferably, the damping device include spring, the extensible member being arranged in the spring and with the extensible member Connected support plate, the driving device are set in the support plate；Spring can effectively absorb vibration, and telescoping rod is arranged On the one hand spring can be positioned, on the other hand support plate can then can be supported, support plate is avoided excessively to move up and down And it causes to be driven unstable.

Preferably, the extensible member includes the telescopic being connected with the rack, is arranged in stretching in the telescopic Contracting bar and sealing ring set on the telescopic rod end are equipped with filling liquid in the telescopic；Setting filling liquid can avoid this and stretch Contracting bar up and down motion amplitude is excessive and causes support plate unstable, ensures the stability of transmission.

Preferably, the telescopic lower end is connected with hydraulic branch pipe, which is bolted with a closure bolt；Pass through Hydraulic branch pipe is set, it can be achieved that open or close the hydraulic branch pipe adjust filling liquid measure number.

Preferably, being bonded with an elastomeric damper member in the support plate, the driving device is set to the elastic shock attenuation On part；By be arranged damping elastic piece, be able to cooperate spring and effectively absorb vibration, and be also avoided that driving device directly with branch Fagging is in contact and equipment attrition is caused to damage.

Preferably, the damping part includes that the first expanding wheel matched with the crawler belt and the crawler belt match The second expanding wheel closed and the damping spring for connecting first, second expanding wheel；The first, second expanding wheel, which is arranged, to be had Effect expands entire crawler belt, and crawler belt is made to form triangle, and the effect of the movement of crawler belt is good during being somebody's turn to do；And spring is set not But vibration when crawler attachment movement can be reduced, and when replacing to crawler belt, can also will subtract spring by compression, Loosen crawler belt, so that convenient disassemble to crawler belt repairs.

Preferably, the crawler belt side is equipped with the first anti-slop serrations matched with the driving wheel, the crawler belt other side Equipped with the second anti-slop serrations, the rack is equipped with for striking off the scraping member for being located at adjacent two second anti-skidding between cog soil；It is logical Crossing the first anti-slop serrations of setting can ensure that the stable driving crawler belt of the driving wheel is turned in the driving wheel when movement It is dynamic；And the second anti-slop serrations, which are arranged, can then improve the occlusal ability between crawler belt and ground, and guarantee crawler belt is when movement, and second Anti-slop serrations then can effectively improve the effect of whole equipment movement, and scraping member, which is arranged, can then will go into two neighboring second The soil of anti-skidding between cog is struck off, and the non-skid property of crawler belt is on the one hand protected, and ensures the process moved downward in whole equipment, no It can slide；And scraping member can also ensure the cleaning of crawler belt, reduce a possibility that crawler belt is impaired, improve crawler belt and use Effect.

Preferably, the scraping member includes the scraper plate being flexibly connected with the rack, the bullet being connected with the scraper plate Property the part and driving wheel of scraping set on the scraper plate end, it is described scrape driving wheel and be equipped with multiple scrape movable tooth；By the way that scraper plate, elastic component is arranged And driving wheel is scraped, scraper plate can effectively blow soil etc. off during being somebody's turn to do, and driving wheel is scraped in setting on scraper plate, during being somebody's turn to do The movable tooth of scraping scraped on driving wheel is that the second anti-slop serrations side wall is in contact, and can strike off soil part, the process struck off In especially the dry soil on crawler belt can be carried out wiping off and carry out wiping off bit by bit, carry out without manpower except soil.

Preferably, the soil-finishing device includes soil-suppressing board, the strike-off stick of bending setting, the rolling on the soil-suppressing board Moving part and pusher cylinder for driving the soil-suppressing board to open and close, the pusher cylinder are obliquely installed in the rack On；Can be when the equipment of track drive to be goed ahead by setting soil-suppressing board, the soil that soil-suppressing board takes up crawler crane carries out It is bulldozed, so that each Long Dao in tea place generally in formation state, avoids causing script smooth during spraying insecticide Bottom surface forms mixed and disorderly situation, and strike-off stick is arranged then preferably first can be pushed into the soil that part loosens pitting one by one and work as In, the effect of grading can be effectively improved, then soil-suppressing board can be achieved in the process of movement in setting rolling member, then can be to entire The support that equipment is formed, avoids crawler belt unstable during travelling forward and causes whole equipment there is a situation where toppling over, Improve the stability of equipment in the process of running.

The medical fluid in explosive box is stirred in conclusion the present invention can be realized by setting agitating device, thus , it can be achieved that being uniformly mixed between original liquid and water when original liquid and water is added, from when spraying insecticide, it is sprayed onto tea Pesticide on tree is integrally uniform, ensures that pesticide can be timely digested, avoids the local deposits of pesticide.

Detailed description of the invention

Fig. 1 is the structural schematic diagram one of the embodiment of the present invention one.

Fig. 2 is the structural schematic diagram two of the embodiment of the present invention one.

Fig. 3 is the enlarged drawing of A in Fig. 2.

Fig. 4 is the partial structural diagram one of the embodiment of the present invention one.

Fig. 5 is the partial structural diagram two of the embodiment of the present invention one.

Fig. 6 is the partial structural diagram three of the embodiment of the present invention one.

Fig. 7 is the enlarged drawing of B in Fig. 6.

Fig. 8 is the partial exploded view of the embodiment of the present invention one.

Fig. 9 is the cross-sectional view of the embodiment of the present invention two.

Figure 10 is the enlarged drawing of E in Fig. 9.

Figure 11 is the partial structural diagram of the embodiment of the present invention two.

Specific embodiment

In order to make those skilled in the art better understand the present invention program, below in conjunction in the embodiment of the present invention Attached drawing, the technical scheme in the embodiment of the invention is clearly and completely described.

Embodiment one

As shown in figures 1-8, a kind of small device for tea place pesticide, including 1, crawler attachment 2 of rack, driving dress 3, soil-finishing device 4, explosive box 5 and flusher 6 are set, wherein the rack 1 is a metal frame；Specifically, the crawler belt dress Setting 2 includes crawler belt 21, driving wheel 22 and damping part 23, and the crawler belt 21 is a metal track, on the inner wall of the crawler belt 21 With the first anti-slop serrations 211, first anti-slop serrations 211 are metal-toothed；It is anti-skidding that second is equipped on the outer wall of above-mentioned crawler belt 21 Tooth 212, the metal-toothed of 212 strip of the second anti-slop serrations；And the left and right sidewall of second anti-slop serrations 212 is inclined oblique Face；The driving wheel 22 is the metal wheel that surface has the groove matched with the first anti-slop serrations 211, which is to pass through What above-mentioned driving device 3 was rotated under driving.

Specifically, the damping part 23 includes the first expanding wheel 231, the second expanding wheel 232 and damping spring 233, institute Stating the first, second expanding wheel is with the metal wheel for matching groove with first anti-slop serrations 211；First expanding wheel 231 are connected with a first connecting rod 235 by bearing, and second expanding wheel 232 is connected with second by bearing Connecting rod 236, described 233 one end of damping spring are connected with the first connecting rod 235, the other end and second connecting rod 236 are connected, and first, second expanding wheel is located at same level, and the first, second expanding wheel is located at the driving wheel 22 Lower section；First expanding wheel 231 is connected with third connecting rod 237, which connect with described first Bar 235 is connected, and second expanding wheel 232 is connected with the 4th connecting rod 238, and the 4th connecting rod 238 connects with described second Extension bar 236 is connected；One the 5th connecting rod 239 is connected on the driving wheel 22, the 5th connecting rod 239 is inverted V-arrangement setting；The third connecting rod 237 is connected by one first spring 291 with described 5th connecting rod, 239 one end, and described the Four connecting rods 238 are connected by second spring 292 with the other end of the 5th connecting rod 239；Therefore the driving wheel 22, the One expanding wheel 231 and the second expanding wheel 232 form triangular shape, so that the crawler belt 21 also forms triangular shape.

Specifically, the rack 1 is equipped with scraping member 24, the scraping member 24 includes scraper plate 241, elastic component 242 And driving wheel 243 is scraped, the scraper plate 241 is a metal plate, the side of the scraper plate 241 and 1 hinge of rack, the elastic component 242 be a metal spring, and described 242 one end of elastic component is connected with the scraper plate 241, and the other end is connected with the rack 1, the bullet Property part 242 pull the scraper plate 241 to tilt；When the crawler belt 21 movement, the scraper plate 241 can enter two second Between anti-slop serrations 212, the soil between two second anti-slop serrations 212 is wiped off；The driving wheel 243 of scraping is a metal tube, this is scraped Driving wheel 243 is located at the end of the scraper plate 241, and the driving wheel 243 of scraping can be rolled in the end of the scraper plate 241, described It scrapes driving wheel 243 and scrapes movable tooth 244 equipped with multiple, the movable tooth 244 of scraping is to be bonded in the conical tooth scraped on driving wheel end face, institute It states and scrapes movable tooth 244 and be made of wear-resistant plastic.

Further, the driving device 3 includes actuator 31, output shaft 32, driving wheel 33 and drive rod 34, the drive Moving part 31 is the gasoline engine in the rack 1；The output shaft 32 is a metal shaft, the output shaft 32 and the actuator 31 are connected, therefore when the actuator is opened, the output shaft 32 can be driven to rotate；The driving wheel 33 is a metal Gear, the driving wheel 33 are connect with 32 rotation stop of output shaft；The rotating bar 34 is a metallic rod, one end of the rotating bar 34 Be connected with the driving wheel 22, the other end is connected with a driven wheel 35, the middle part of the rotating bar 34 by a bearing with it is described Rack 1 is connected, and the driving wheel 33 is meshed with the driven wheel 35, therefore when the actuator 31 is opened, described Actuator 31 can drive the driving wheel 22 to rotate.

Further, the soil-finishing device 4 includes soil-suppressing board 41, strike-off stick 42, rolling member 43 and pusher cylinder 45；It is described Soil-suppressing board 41 is a metal plate, and one end of the soil-suppressing board 41 has two metal protruding shafts 411, and the rack 1 is equipped with two sliding slots 11, Institute's protruding shaft 411 is inserted into the sliding slot 11, and the protruding shaft 411 can slide up and down in the sliding slot 11, also can be rotated；Institute Stating pusher cylinder 45 is a conventional cylinder, and the pusher cylinder 45 inclination is located in the rack 1, the end of the pusher cylinder 45 Portion's connection has a bolster 451, and the bolster 451 is a spring；The end of the bolster 451 is connected with metallic rod, institute It states metallic rod to be flexibly connected with the soil-suppressing board 41, therefore the pusher cylinder 45, when opening, which can Push 41 activity of soil-suppressing board；The strike-off stick 42 is a C-shaped plate, the strike-off stick 42 and the 41 lower end surface phase of soil-suppressing board Even；Two through hole is equipped on the soil-suppressing board 41,43 part of rolling member passes through in the through-hole, the rolling member 43 For metallic roll；Cleaning member 46 is additionally provided on the soil-suppressing board 41, the cleaning member 46 is that section is L-shaped wear-resistant plastic, should Cleaning member 46 is in contact with the end face of the rolling member 43, and 46 end of cleaning member has arcwall face；In the rolling member 43 In the rotation, the soil on the rolling member 43 can be fallen on ground under the striking off of the cleaning member 46；By setting The soil being attached on rolling member can effectively be removed by setting cleaning member, and guarantee will not adhere to greatly in the process of movement in rolling member The soil of amount, when especially the soil in tea place is in moisture state, which improves whole equipment during the work time The cleaning of lower part, therefore when spraying to tea place, as long as being not necessarily to after the rainwater after rain on tealeaves is dried Consider the humidity of soil in tea place, which raises whole equipments when spraying insecticide to the adaptability of environment, and is not necessarily to people Work strikes off the soil on rolling member, has saved manpower and material resources, sustainable to spray insecticide, and improves entire pesticide spray The efficiency spilt.

Specifically, the flusher 6 includes piston cylinder 61, piston piece 62, liquid suction pipe 63 and hydrojet component 64, the work Plug tube 61 is a metal cylinder, and the piston cylinder 61 is set in the rack 1, and the piston piece 62 is by screw rod 621 and piston First 622 are constituted, and the screw rod 621 is a metallic rod, and the piston head 622 is a Rubber end, the screw rod 621 and the piston First 622 are connected, which penetrates into the piston cylinder 61；And the piston piece 62 by a connection structure with it is described Output shaft 32 is connected, and the liquid suction pipe 63 is metallic conduit, which is connected with the piston cylinder 61 and the liquid suction pipe Check valve is equipped in 63；The explosive box 5 is connect with the liquid suction pipe 63, and the explosive box 5 is a plastic box；The spray Liquid component 64 includes general pipeline 640, the first branch pipe 641 and the second branch pipe 642, and the general pipeline 640 is connected with the piston cylinder 61, And check valve is equipped in the general pipeline；Wherein first branch pipe 641 is connected with the general pipeline, and the second branch pipe is similarly and institute General pipeline 640 is stated to be connected；First branch pipe 641 includes the first tube body and the second tube body, and first tube body is and described the The plastic conduit that general pipeline is connected, second tube body is the plastic conduit being spirally connected with first tube body, in second tube body It is upper that there are multiple spray heads；Likewise, second tube body includes third tube body and the 4th tube body, the third tube body and described the What four tube bodies were connected, there are multiple spray heads on the 4th tube body, while described first, third tube body is on the general pipeline Height can be adjusted；Effectively crawler belt can be driven to carry out in entire driving device by setting piston cylinder, piston piece, liquid suction pipe During work, by the power of driving device, driving device is realized when side is run, while spraying to tea place Pesticide, pesticide spraying is uniform during being somebody's turn to do, and the pesticide for avoiding local tea tree excessively causes have pesticide residue on tealeaves, and Setting hydrojet component then can effectively spray pesticide, and the effect of sprinkling is good.

Further, the drive mechanism 7 includes that reduction assemblies are connected with rotation gear 72, and the reduction assemblies 71 are too Positive planetary gear set, the reduction assemblies are connected with the output shaft, and the end of the reduction assemblies is connected with tooth The line shaft of wheel, the rotation gear 72 are a metal gear, the gear phase of the rotation gear 72 and axis on the reduction assemblies Engagement has a through-hole in the middle part of the rotation gear 72, has internal screw thread, the rotation in the through-hole at 72 middle part of rotation gear Internal screw thread on gear 72 is meshed with the screw rod 621, therefore when the rotation gear 72 rotation, drives the work 62 forward motion of plug member, realizes the hydrojet of progress；A reset spring 79, the reset bullet are connected on the rotation gear 72 Spring 79 is a wind spring, which is connected with the rotation gear, and the other end is connected with rack；And the power Axis 73 includes the first axle body 731 being connected with the reduction assemblies, the second axle body 732 of connection gear and covers in second axis Socket bearing 733 on body 732, the first axle body 731 are flexibly connected with the second axle body 732, the first axle body 731 Upper to have multiple first rotation stop grooves 741, the inner ring of the socket bearing 733 is equipped with tool, and there are six planes；In the first axle Body 731 is equipped with the first hexagonal rotation prevention portion 701, and the end of second week axis body 732 is equipped with the second rotation prevention portion 702, described Bearing 733 is socketed when moving left and right, the socket bearing connects first rotation prevention portion 701 and the second rotation prevention portion 702；It is described It is socketed on the outer ring of bearing 733 and is connected with a catch bar 75, the catch bar 75 extends face, thus by pushing away described in pushing Lever 75 realizes socket bearing connection the first axle body 731 and the second axle body 732；When being sprayed, the mobile promotion Bar 75 realizes that the first axle body is connected with the second axle body, and during use, can spray it in the medicine in piston cylinder Afterwards, it disconnects the first axle body to connect with the second axle body, so that wind spring drives the piston piece to exit out of piston cylinder；Medicine is taken out in realization Enter into piston cylinder.

Embodiment two

As shown in figs. 9-11, this implementation discloses the damping device 9 for connecting the driving device 3 and the rack 1, this subtracts The vibration in the absorption driving device 3 of device 9 is shaken, specific: the damping device 9 includes spring 91, extensible member 92 and support plate 93, the spring 91 is a metal spring, and the extensible member 92 is through in the spring 91；Specifically, the extensible member 92 Including the telescopic 921, telescopic rod 922 and sealing ring 923 being connected with the rack 1, the telescopic 921 is a metallic sheath, Telescopic 921 is fixed by screws in the rack 1, and the telescopic rod 922 is worn in the telescopic 921；Specifically , the telescopic rod 922 is a metallic rod, and the sealing ring 923 is rubber ring, and 923 sets of the sealing ring in the telescopic rod 922 Lower end, the sealing ring 923 is in contact with the inner wall of the telescopic 921；The putting on for telescopic rod 922 is connected with one Hydraulic branch pipe 924, the hydraulic branch pipe 924 are a metal tube, are bolted with a closure bolt 925 on the hydraulic branch pipe 924；Institute It states filled with filling liquid in telescopic 921, which is hydraulic oil.

Further, the support plate 93 is a metal plate, which is equipped with an elastomeric damper member 931, the elastomeric damper member 931 is one layer of rubber layer, and the actuator 31 is placed directly in the elastomeric damper member 931, institute 93 lower end of support plate is stated to be connected with the telescopic rod 922.

Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment should fall within the scope of the present invention.

Claims (10)

1. a kind of small device for tea place pesticide, it is characterised in that: including

Rack (1)；

A crawler attachment (2) in the middle part of the rack (1), for driving whole equipment fore-aft motion；

For driving the driving device (3) of the crawler attachment (2)；

Soil-finishing device (4) on the rack (1), the soil to get up for flattening the crawler attachment (2) band；

For storing the explosive box (5) of medical fluid；

For the flusher (6) to tea tree sprinkling medical fluid；

For connecting the damping device (9) of the driving device (3) Yu the rack, the vibration on driving device (3) is absorbed.

2. a kind of small device for tea place pesticide according to claim 1, it is characterised in that: the damping dress Setting (9) includes spring (91), the extensible member (92) being arranged in the spring (91) and the branch being connected with the extensible member (92) Fagging (93), the driving device (3) are set on the support plate (93).

3. a kind of small device for spraying to tea place according to claim 2, it is characterised in that: the extensible member (92) include the telescopic (921) being connected with the rack (1), the telescopic rod (922) being arranged in the telescopic (921) and Sealing ring (923) set on the telescopic rod (911) end, the telescopic (921) is interior to be equipped with filling liquid.

4. a kind of small device for spraying to tea place according to claim 3, it is characterised in that: the telescopic (921) lower end is connected with hydraulic branch pipe (924), which is bolted with a closure bolt (925).

5. a kind of small device for spraying to tea place according to claim 4, it is characterised in that: the support plate (93) it is bonded on an elastomeric damper member (931), the driving device (3) is set on the elastomeric damper member (931).

6. a kind of small device for tea place pesticide according to claim 1, it is characterised in that: the crawler belt dress (2) are set to include crawler belt (21), the driving wheel (22) for driving the crawler belt (21) to rotate and match with the crawler belt (21) Damping part (23), the driving wheel (22) matches with the driving device (3), the damping part (23) and the drive Driving wheel (22) is matched supportting the crawler belt (21) for triangle.

7. a kind of small device for tea place pesticide according to claim 6, it is characterised in that: the damping portion Part (23) includes the first expanding wheel (231) matched with the crawler belt (21), second matched with the crawler belt (21) expansion Open wheel (232) and the damping spring (233) matched with first, second expanding wheel.

8. a kind of small device for tea place pesticide according to claim 7, it is characterised in that: the crawler belt (21) side is equipped with the first anti-slop serrations (211) matched with the driving wheel, and it is anti-skidding which is equipped with second Tooth (212), the rack (1) are equipped with the scraping member for striking off the soil between adjacent two second anti-slop serrations (212) (24).

9. a kind of small device for tea place pesticide according to claim 8, it is characterised in that: described to strike off portion Part (24) include with the rack (1) scraper plate (241) being flexibly connected, the elastic component (242) that is connected with the scraper plate (241) and Set on scraping driving wheel (243) for the scraper plate (241) end, it is described scrape driving wheel (243) and be equipped with multiple scrape movable tooth (234).

10. a kind of small device for tea place pesticide according to claim 1, it is characterised in that: the grading Device (4) include soil-suppressing board (41), bending setting strike-off stick (42), be set to the soil-suppressing board (41) on rolling member (43) and Pusher cylinder (45) for driving the soil-suppressing board (44) to open and close, the pusher cylinder (45) are obliquely installed in described In rack (1).