Tea leaf harvester
Technical Field
The invention relates to the technical field of agricultural machinery, in particular to a tea harvester.
Background
At present, tea plucking is usually carried out by tea growers in a manual mode or a backpack tea plucker or a double tea plucker. The tea plucking machine is mostly based on the cutting type working principle, the plucking process is interrupted by a lot of pieces, the impurities are more, and the cut tea is mostly used for making the powdered tea bag. The handheld tea plucker is small in one-time picking amount, and needs to frequently transfer tea leaves picked, so that the backpack tea plucker is very inconvenient to operate due to the fact that the backpack tea plucker is heavy, and needs other people to help to sort the tea leaves picked into the storage bag. If the rail-mounted walking tea plucker is adopted, the investment is large, and the tea plucker is difficult to adapt to the plucking of tea trees in different areas and different growth conditions.
Disclosure of Invention
The invention provides a tea harvester which can be used for harvesting tea trees in different terrains and different growth conditions, picked tea can be subjected to primary screening, and the influence on the tea quality in the picking and storing processes is ensured.
In order to achieve the purpose, the invention adopts the following technical scheme:
a tealeaves harvester which characterized in that: comprises a shell, a tea leaf collector, a harvesting mechanism and a primary screening mechanism; the shell comprises a top and side parts extending downwards on two sides of the top, and a crawler walking mechanism and a steering mechanism are arranged at the lower ends of the side parts; the tea leaf collector comprises a top plate and a collecting box at the side part of the top plate, and the upper side of the top plate is communicated with the collecting box; the harvesting mechanism comprises a main harvesting hopper and a side harvesting hopper, a main cutting knife is arranged at the end part of the main harvesting hopper, a harvesting impeller is arranged at the upper end of the main cutting knife, the main cutting knife comprises a first knife body and a second knife body, a main driving mechanism for driving the first knife body and the second knife body to move relatively is arranged at the side part of the main cutting knife, a side cutting knife is arranged on the side harvesting hopper, a sweeping wheel is arranged at the upper side of the side cutting knife, the side cutting knife comprises a third knife body and a fourth knife body, and an auxiliary driving mechanism for driving the third knife body and the fourth knife body to move relatively is arranged at the side part of the side cutting knife; the primary screening mechanism comprises a screen plate, the screen plate is located between the harvesting mechanism and the top, and an opening is formed in the screen plate.
Preferably, a main motor is arranged on the side portion of the main cutting knife, the main motor drives an eccentric shaft to rotate, a first eccentric wheel and a second eccentric wheel are arranged on the eccentric shaft, the first eccentric wheel abuts against the first knife body, and the second eccentric wheel abuts against the second knife body.
Preferably, a hydraulic communicating vessel is arranged on the opposite side of the main cutter and the main motor, piston rods are arranged on the opposite sides of the first cutter body and the second cutter body and the main motor, and the two piston rods are respectively connected with two ports of a hydraulic channel of the hydraulic communicating vessel.
Preferably, the second cutter body is provided with a guide groove, the first cutter body is partially embedded in the guide groove and can move relative to the second cutter body along the guide groove, and a plane roller plate is arranged between the first cutter body and the second cutter body.
Preferably, a track groove is formed in the fourth cutter body, the third cutter body is partially embedded in the track groove and can move along the track groove, an auxiliary motor is arranged on the side portion of the side cutter, a driving rod is eccentrically connected to a rotating shaft of the auxiliary motor, and the driving rod is hinged to the rotating shaft of the motor and the third cutter body.
Preferably, a primary screen frame is arranged on the lower side of the screen plate, and screen holes are formed in the area, opposite to the screen plate, of the primary screen frame.
Preferably, a third rack extending upwards is arranged on the side portion of the primary screening frame, a second height adjusting motor is arranged on the top portion of the primary screening frame, a third gear is arranged at the output end of the second height adjusting motor, and the third gear is meshed with the third rack.
Preferably, the main harvesting hopper comprises a side arm which is located at the end and extends upwards, a first rack is arranged on the side arm, a first height adjusting motor is arranged on the top, a first gear is arranged at the output end of the first height adjusting motor, and the first gear is meshed with the first rack.
Preferably, one end of the side harvesting hopper is hinged with the side arm, the other end of the side harvesting hopper is provided with a sliding block, the side portion of the side harvesting hopper is provided with a sliding groove embedded with the sliding block, the side portion of the sliding groove is provided with a second rack, the side portion of the sliding block is provided with a second gear, and the second gear is meshed with the second rack.
Preferably, the collection box is provided with a fan, and a vent hole is provided at the opposite side of the fan.
In summary, compared with the prior art, the invention has the advantages that: the harvesting machine can be used for harvesting tea trees in different terrains and different heights, is high in flexibility, and can adjust a harvesting mechanism according to the shape of the tea trees to ensure the quality stability of harvested leaves; picked tea leaves can be subjected to primary screening, impurities in the tea leaves are removed, subsequent processing work is reduced, and meanwhile, the influence on the quality of the tea leaves in the storage process of a collector is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of another view angle of the present invention;
FIG. 3 is a schematic view of the main drive mechanism;
FIG. 4 is a schematic structural view of the sub-drive mechanism;
fig. 5 is a schematic view of the structure of the main cutter.
The reference numbers in the figures are as follows:
1. the main body of the harvester comprises a shell, 11, a top part, 12, a side part, 121, a sliding chute, 122, a second rack, 2, a tea leaf collector, 21, a top plate, 22, a collecting box, 221, a fan, 3, a harvesting mechanism, 31, a main harvesting hopper, 311, a side arm, 3111, a first rack, 32, a side harvesting hopper, 321, a sliding block, 322, a second gear, 33, a main cutter, 331, a first cutter body, 332, a second cutter body, 3321, a guide groove, 333, a plane roller plate, 34, a harvesting impeller, 35, a side cutter, 351, a third cutter body, 352, a fourth cutter body, 3521, a rail groove, 36, a sweeping wheel, 37, a first height adjusting motor, 371, a first gear, 4, a prescreening mechanism, 41, a sieve plate, 42, a primary sieve frame, 421, a third rack, 43, a second height adjusting motor, 431, a third gear, 5, a crawler traveling mechanism, 6, a steering mechanism, 7, a main driving mechanism, 71, a main motor, 72. eccentric shaft, 73, first eccentric wheel, 74, second eccentric wheel, 75, hydraulic communicating device, 76, piston rod, 8, secondary driving mechanism, 81, secondary motor, 82, driving rod.
Detailed Description
The invention will be further elucidated with reference to an embodiment in the drawing.
As shown in fig. 1 to 5, the tea leaf harvester includes a housing 1, a tea leaf collector 2, a harvesting mechanism 3, and a prescreening mechanism 4. The housing 1 comprises a top part 11 and a side part extending downwards on two sides of the top part 11, and the lower end of the side part 12 is provided with a crawler belt 5 mechanism and a steering mechanism 6. The crawler belt walking mechanism 5 comprises three walking wheels and a crawler belt wrapped on the outer side. The steering mechanism 6 comprises a steering wheel and a wheel carrier arranged on the shell 1, a steering motor is arranged on the side part of the wheel carrier, and the steering motor is meshed with the gear teeth on the wheel carrier through a gear at the output end to drive the wheel carrier to rotate. The wheel carrier may be connected to the housing 1 by bearings.
The tea leaf collector 2 comprises a top plate 21 and collecting boxes 22 on two sides of the top plate 21, the upper sides of the collecting boxes 22 are open, the upper sides of the top plate 21 are communicated with the collecting boxes 22, the top plate 21 is gradually inclined downwards from the middle part to the end part, and tea leaves falling on the top plate 21 can slide into the collecting boxes 22 on two sides along the top plate 21.
The harvesting mechanism 3 comprises a main harvesting hopper 31 and a side harvesting hopper 32, a main cutter 33 is arranged at the end part of the main harvesting hopper 31, a harvesting impeller 334 is arranged at the upper end of the main cutter 33, the main cutter 33 comprises a first cutter body 331 and a second cutter body 332, and a main driving mechanism 7 for driving the first cutter body 331 and the second cutter body 332 to move relatively is arranged at the side part of the main cutter 33. The side harvesting bucket 32 is provided with a side cutting knife 35, the upper side of the side cutting knife 35 is provided with a sweeping wheel 36, and the sweeping wheel 36 comprises a shaft lever and a convex rod which is arranged along the axial direction of the shaft lever and is vertical to the shaft lever. The side cutter 35 includes a third blade 351 and a fourth blade 352, and a sub-drive mechanism 8 for driving the third blade 351 and the fourth blade 352 to move relatively is provided on a side portion of the side cutter 35.
The main driving mechanism 7 comprises a main motor 71 positioned at the side part of the main cutting knife 33, the main motor 71 drives an eccentric shaft 72 to rotate, a first eccentric wheel 73 and a second eccentric wheel 74 are arranged on the eccentric shaft 72, the first eccentric wheel 73 abuts against a first knife body 331, and the second eccentric wheel 74 abuts against a second knife body 332. The two eccentric wheels drive the first cutter body and the second cutter body to move in a staggered mode.
The main cutter 33 is provided with a hydraulic communicating vessel 75 on the side opposite to the main motor 71, the first cutter body 331 and the second cutter body 332 are provided with piston rods 76 on the side opposite to the main motor 71, and the two piston rods 76 are respectively connected with two ports of a hydraulic passage of the hydraulic communicating vessel 75. When the eccentric shaft 72 drives the first cutter 331 and the second cutter 332 to perform the alternating motion, the two piston rods 76 alternately move toward the inside of the hydraulic communication unit 75, and the hydraulic communication unit 75 generates the restoring force of the first cutter 331 and the second cutter 332.
The second blade body 332 is provided with a guide groove 3321, the first blade body 331 is partially inserted into the guide groove 3321 and can move along the guide groove 3321 relative to the second blade body 332, and a plane roller plate 333 is provided between the first blade body 331 and the second blade body 332. The lower end of the second cutter 332 is also provided with a plane needle roller plate 333, and the plane needle roller plate 333 is fixed on the support plates at both sides.
The fourth cutter body 352 is provided with a track groove 3521, the third cutter body 351 is partially embedded in the track groove 3521 and can move along the track groove 3521, the side of the side cutter 35 is provided with an auxiliary motor 81, a rotating shaft of the auxiliary motor 81 is eccentrically connected with a driving rod 82, and the driving rod 82 is hinged with the rotating shaft of the motor and the third cutter body 351. The main motor 71 and the sub motor 81 are micro motors, and are supplied with power through a battery pack.
The first cutter body 331 and the second cutter body 332 move alternately, and the third cutter body 351 and the fourth cutter body 352 move alternately to cut tea leaves at the upper end and both sides of the tea tree, respectively.
The prescreening mechanism 4 comprises a sieve plate 41, the sieve plate 41 is positioned between the harvesting mechanism 3 and the top 11, and the sieve plate 41 is provided with an opening. A primary screen frame 42 is arranged on the lower side of the screen plate 41, and screen holes are arranged on the primary screen frame 42 in the area opposite to the screen plate 41. The side of the primary screen frame 42 is provided with a third rack 421 extending upwards, the top 11 is provided with a second height adjusting motor 43, the output end of the second height adjusting motor 43 is provided with a third gear 431, and the third gear 431 is meshed with the third rack 421.
The main harvesting hopper 31 comprises side arms which are located at the end portions and extend upwards, a first rack 3111 is arranged on the side arms 311, a first height adjusting motor 37 is arranged on the top portion 11, a first gear 371 is arranged at the output end of the first height adjusting motor 37, the first gear 371 is meshed with the first rack 3111, the height of the main harvesting hopper 31 is adjusted through the first height adjusting motor 37, and therefore harvesting of tea trees with different heights is adapted.
One end of the side harvesting bucket 32 is hinged with the side arm, the other end of the side harvesting bucket is provided with a sliding block 321, the side part 12 is provided with a sliding groove 121 embedded with the sliding block 321, the side part of the sliding groove 121 is provided with a second rack 122, the side part of the sliding block 321 is provided with a second gear 322, and the second gear 322 is meshed with the second rack 122. The open end of the sliding groove 121 is tightened inward to prevent the sliding block 321 from falling off.
The collection tank 22 is provided with a fan 221, and a vent hole provided at the opposite side of the fan 221. The fan 221 is located on the collecting box 22 near one side of the harvesting mechanism 3, and the tea leaves discharged into the collecting box 22 from one side of the harvesting mechanism 3 are dispersed to the other side under the action of the fan 221 so as to avoid the accumulation of local tea leaves in the collecting box 22, and the tea leaves with light weight and large area can drift away under the action of wind power and are separated from heavier particles. Meanwhile, the fan 221 can ventilate the collection box 22 regularly to avoid excessive internal humidity.
The above description is only for explaining the present invention and making the present invention complete, but not limiting the present invention, and the skilled in the art can make modifications without inventive contribution to the present embodiment as required after reading the present specification, and these are all modifications without inventive contribution, but are protected by patent laws within the scope of the claims of the present invention.