Tea-leaf picker

Abstract

The tea picking machine comprises a rack, a leaf cutting mechanism and an air supply mechanism are arranged on the rack, an air guide plate is arranged behind the leaf cutting mechanism in a bearing mode, and the tea picking machine is characterized in that the air supply mechanism comprises a fan body and an air guide pipe, the air guide pipe is provided with an air guide cavity with an opening in the left end, and the left end of the air guide pipe is connected to an air outlet of the fan body; the rack comprises a first mounting wall and a second mounting wall, the fan body is rotatably mounted on the first mounting wall, the right end of the air guide pipe is rotatably mounted on the second mounting wall, the air guide pipe is located between the first mounting wall and the second mounting wall, and the air supply outlet supplies air to the leaf cutting mechanism. And a first locking device is arranged between the air supply mechanism and the rack. The tea leaf cutting device has the advantages that the structure is simple, the air supply angle of the air supply port blowing air to the leaf cutting mechanism on the air guide pipe is adjustable, and the air supply angle can be adjusted to the most adaptive air supply angle according to the sizes of different tea leaves, so that the tea loss rate is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of tea plucking equipment, in particular to a tea plucking machine. Background Art

[0002] The cultivation and processing of tea has a long history in my country. Tea picking technology is an important part of tea cultivation technology. Traditionally, tea is picked manually, which is inefficient and has high labor costs. In order to improve picking efficiency and reduce costs, tea picking machines came into being. Tea picking machines are crop harvesting machines that pick new and tender tea leaves from the tops of tea trees.

[0003] A tea picking machine usually consists of a power part, an air supply part, a leaf cutting part and a tea collection part. The power part drives the leaf cutting part to pick the tea leaves, and the air supply mechanism blows the picked tea leaves into the tea collection part. The basic component of the air supply mechanism of the common tea picking machines on the market is usually a fan, and the fan is basically fixed on the machine, resulting in a fixed air supply angle. During the tea picking and collection process, the blowing angle will affect the tea collection effect. A poor air supply angle will cause the cut tea leaves to be blown outside the collection part, resulting in waste. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a tea picking machine with a simple structure and adjustable air supply angle.

[0005] The technical solution adopted by the present invention to solve the above technical problems is: A tea picking machine comprises a frame, wherein a leaf cutting mechanism and an air supply mechanism are arranged on the frame, an air guide plate is arranged at the rear of the leaf cutting mechanism, the air supply mechanism comprises a fan body and an air guide duct, the air guide duct has an air guide cavity with an opening at the left end, the left end of the air guide duct is connected to the air outlet of the fan body, the air guide duct is provided with an air supply port connected to the air guide cavity, the frame comprises a first mounting wall and a second mounting wall which are spaced apart and arranged opposite to each other on the left and right sides, the fan body is rotatably mounted on the first mounting wall, the right end of the air guide duct is rotatably mounted on the second mounting wall, the air guide duct is located between the first mounting wall and the second mounting wall, the air supply port supplies air towards the leaf cutting mechanism, and a first locking device for locking the air supply angle of the air supply port is arranged between the air supply mechanism and the frame.

[0006] The fan body is provided with a connection cover for rotatably connecting and installing with the first installation wall, the connection cover is arranged on the outer side of the first installation wall, the connection cover is rotatably connected with the first installation wall through a first rotating shaft, and the right end of the air guide pipe is rotatably connected with the second installation wall through a second rotating shaft. The structure is simple and the rotation connection is stable.

[0007] The right side of the connecting cover is provided with a connecting wall, and the first locking device is provided between the connecting wall and the first mounting wall; The first locking device includes a first locking knob, the first locking knob includes a knob head and a threaded connecting rod, the connecting wall surface is provided with a locking mounting hole that passes through left and right, the rotation of the first rotating shaft drives the locking mounting hole to change its position around the central axis of the first rotating shaft, the first mounting wall is provided with a plurality of locking columns with internal threaded locking holes that match the threaded connecting rod, one locking column corresponds to the changing position of one locking mounting hole, and the threaded connecting rod passes through the locking mounting hole and is screwed into the corresponding locking column to achieve locking of the air supply angle of the air supply port. The above locking device has a simple structure, the centers of the plurality of locking columns are located on the circumference of a concentric circle, the positions of the plurality of locking columns are designed and arranged according to the commonly used air supply angles for specific air supply use, the locking and unlocking operations are relatively convenient, the cost is low, and the locking is stable.

[0008] The first installation wall is provided with a rotation angle marking area, and the connecting wall surface is provided with an indication arrow in the direction of the rotation angle marking area, so that the operator can adjust the air supply angle accurately according to the specific usage conditions.

[0009] The first rotating shaft is provided on the connecting wall surface protruding to the right, and the first mounting wall is correspondingly provided with a first rotating connecting hole for the first rotating shaft to be rotatably inserted and installed, and the first rotating shaft is inserted and arranged in the first rotating connecting hole and can rotate in the first rotating connecting hole; The right end of the first rotating shaft is provided with an internal thread connection hole, and a matching screw with a knob is screwed into the internal thread connection hole to realize the anti-drop positioning installation of the first rotating shaft on the first mounting wall, wherein the screw is screwed into the internal thread connection hole, and the knob on the screw is located on the right side of the first mounting wall. The stable rotation installation of the first rotating shaft on the first mounting wall is realized, and the structure is simple, the cost is low, and it is stable.

[0010] The right end of the air guide pipe is protruded to the right and is provided with the second rotating shaft. The second mounting wall is correspondingly provided with a second rotating connection hole for the second rotating shaft to be rotatably inserted and installed. The second rotating shaft is inserted and arranged in the second rotating connection hole and can rotate in the second rotating connection hole. The right end of the second rotating shaft is provided with an internal thread connection hole, and the second rotating shaft is anti-dropping and positioned on the second mounting wall by a matching screw with a knob screwed into the internal thread connection hole, wherein the screw is screwed into the internal thread connection hole, and the knob on the screw is located on the right side of the second mounting wall. The second rotating shaft is stably rotated and mounted on the second mounting wall, and the structure is simple, the cost is low, and the installation is stable.

[0011] The fan body is driven by a driving motor, and the driving motor is arranged in the connecting cover, and the connecting cover also protects the driving motor.

[0012] The first installation wall is provided with a recessed opening, and the corresponding position of the fan body is embedded in the recessed opening, so that the overall structure is relatively neat and compact without any particularly abrupt parts.

[0013] The wind guide plate is provided with a connecting shaft across, the connecting shaft is arranged between the first mounting wall and the second mounting wall, and the first end of the connecting shaft is rotatably mounted on the first mounting wall, and the second end of the connecting shaft is rotatably mounted on the second mounting wall, so that the wind guide plate can be rotatably mounted between the first mounting wall and the second mounting wall around the axis, and a second locking device for locking the rotation position of the wind guide plate is arranged between the wind guide plate and the frame. The structure is simple, the wind guide plate is rotatably arranged on the frame through a connecting shaft, so that the wind guide angle of the wind guide plate is adjustable, which is convenient for adjusting the wind guide angle of the wind guide plate according to different varieties and specifications of tea leaves, and the parabola formed by the wind guide plate blows the unnecessary residual leaves to the outside, so that as few residual leaves as possible are collected into the tea collection part together with the usable tea leaves, which is convenient for the subsequent screening of the quality of the picked tea leaves, improves the later screening efficiency, and makes the versatility of the whole machine better, and the use cost is also effectively reduced; after the wind guide plate angle is adjusted, the position is locked by the second locking device.

[0014] The front end of the air guide plate is wound and fixedly arranged on the connecting shaft, so that the air guide plate can be stably fixedly installed on the connecting shaft.

[0015] The rear end of the wind guide plate is bent upward obliquely to form a bent portion, so that the wind blowing in can form a parabola and blow the unnecessary residual leaves outside.

[0016] The second locking device includes a second locking knob arranged on the outer side of the second mounting wall, the end of the first end of the connecting shaft extends out of the second mounting wall and is fixedly connected to the center of the second locking knob, a locking steel ball is telescopically eccentrically arranged on the end surface of the second locking knob opposite to the second mounting wall, the rotation of the second locking knob drives the connecting shaft to rotate, and synchronously drives the locking steel ball to change its position around the central axis of the connecting shaft, and the second mounting wall is provided with a plurality of through locking holes for the locking steel ball to be embedded and installed, one locking hole corresponds to the changing position of one locking steel ball, and the locking steel ball is embedded in one of the locking holes to achieve the locking of the rotation position of the air guide plate. The positions of the plurality of locking holes are designed and arranged according to the specific use angle, and the locking and unlocking operations are relatively convenient, with low cost and stable locking.

[0017] The centers of the plurality of locking holes are located on a circumference line of a concentric circle.

[0018] The end surface of the second locking knob opposite to the second mounting wall is provided with a concave cavity, a positioning column is provided in the concave cavity and protrudes in the direction of the second mounting wall, the positioning column has a positioning cavity opened in the direction of the second mounting wall, a compression spring and a locking steel ball are sequentially provided in the positioning cavity in the direction of the second mounting wall, and the locking steel ball is telescopically movable in the positioning cavity by cooperating with the compression spring, and in the locked state, the corresponding part of the locking steel ball extends out of the positioning cavity and is embedded in one of the locking holes, so as to realize the stable telescopic installation of the locking steel ball on the locking knob.

[0019] A gap is provided between the end surface of the positioning column opposite to the second mounting wall and the second mounting wall, and the gap is smaller than the ball diameter of the locking steel ball, so as to ensure that the locking steel ball will not fall off during the rotation of the second locking knob, thereby ensuring the overall stable use.

[0020] The second mounting wall is provided with an indicator mark at the position of each locking hole. According to the specifications of tea leaves, three locking holes are usually provided, corresponding to thick buds, medium buds and thin buds, respectively, so that the operator can adjust the air guide angle accurately according to the specific usage. The leaf shearing mechanism includes a fixed leaf shearing plate and a movable leaf shearing plate, wherein the fixed leaf shearing plate is fixedly arranged between the first mounting wall and the second mounting wall, and the movable leaf shearing plate can be movably arranged on the fixed leaf shearing plate, and the front end of the air guide plate is arranged close to the rear end surface of the fixed leaf shearing plate, and a guide plate with a guide groove is detachably arranged below the fixed leaf shearing plate. A guide plate with a guide groove is detachably installed below the fixed leaf shearing plate, so that the guide plate can be replaced. Then, a guide plate with a guide groove of matching specifications can be selected for tea leaves of different specifications, so that the versatility of the whole machine is better and the use cost is effectively reduced.

[0021] The fixed leaf shearing plate is provided with a plurality of first shearing grooves with front openings at intervals from left to right, the movable leaf shearing plate is provided with a plurality of second shearing grooves with front openings at intervals from left to right, and a guide leaf groove with front openings is provided on the guide leaf plate at a position corresponding to each of the first shearing grooves. When in use, the guide leaf plate first contacts the tea tree, and the corresponding tea leaf matched with the guide leaf groove enters the guide leaf groove and the first shearing groove, and the leaf entering the guide leaf groove is sheared off by the leaf shearing mechanism.

[0022] The left and right side walls of the first shearing groove are mirror-symmetrical oblique first shearing surfaces, the left and right side walls of the second shearing groove are mirror-symmetrical oblique second shearing surfaces, the first shearing surfaces are inclined outward from top to bottom, and the second shearing surfaces are inclined inward from top to bottom. The first shearing surfaces and the corresponding second shearing surfaces cooperate to shear off the tea leaves neatly.

[0023] The guide vane groove divides the front part of the guide vane plate into a plurality of guide vane strips, and the front end of the guide vane strips is bent upward to form a barrier portion. The barrier portion forms a barrier effect on the blades, making it easier for the blade shearing mechanism to shear the blades.

[0024] The vane guide plate is detachably connected to the fixed vane shear plate by bolts, and is convenient to install and disassemble, has a simple structure, low cost, and stable installation.

[0025] The movable blade shearing plate is provided with a plurality of waist-shaped guide grooves extending vertically from left to right at intervals, and the fixed blade shearing plate is provided with a plurality of guide protrusions protruding therefrom, one guide protrusion corresponds to one waist-shaped guide groove, and the guide protrusion is embedded in the corresponding waist-shaped guide groove, and the length of the waist-shaped guide groove in the left-right direction is greater than the length of the guide protrusion in the left-right direction. Through the cooperation of the guide protrusion and the waist-shaped guide groove, the movable blade shearing plate can achieve stable left-right movement operation relative to the fixed blade shearing plate.

[0026] The guide protrusion is provided with a vertically penetrating mounting hole, the guide vane plate is provided with a vertically penetrating mounting screw hole coaxial with the mounting hole, and the rod of the bolt passes through the waist-shaped guide groove and the mounting hole in sequence and is screwed into the corresponding mounting screw hole. The structure is simple, and the three are connected and installed with each other by bolts.

[0027] A washer is arranged between the head of the bolt and the guide protrusion, the washer is sleeved on the bolt, and the outer diameter of the washer is larger than the width of the waist-shaped guide groove in the front-back direction, thereby ensuring a stable connection and installation between the fixed blade shearing plate and the movable blade shearing plate.

[0028] Compared with the prior art, the advantages of the present invention are: simple structure, the fan body is rotatably connected to the first mounting wall on the frame, and the right end of the air guide pipe is rotatably connected to the second mounting wall on the frame, so that the air supply angle of the air supply outlet on the air guide pipe that blows air toward the leaf cutting mechanism is adjustable, and can be adjusted to the most suitable air supply angle according to the size of different tea leaves to avoid the tea leaves from being blown outside the collecting part as much as possible, thereby reducing the tea loss rate. After the adjustment is completed, the air supply angle is fixed by the first locking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of a first three-dimensional structure of the present invention; Figure 2 It is a side view structural schematic diagram of the present invention; Figure 3 It is a first cross-sectional structural schematic diagram of the present invention; Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle; Figure 5 It is a second cross-sectional structural schematic diagram of the present invention; Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 7 This is a schematic diagram of the three-dimensional structure of the present invention with the fan assembly removed; Figure 8 It is a schematic diagram of a second three-dimensional structure of the present invention; Fig. 9 It is a cross-sectional structural schematic diagram of the air guide plate of the present invention being installed on the frame in cooperation; Fig.10 It is a schematic diagram of the three-dimensional structure of the air guide plate and the first installation wall in the present invention; Fig.11 for Fig.10 Schematic diagram of the enlarged structure at C in the middle; Fig.12It is a schematic cross-sectional view of the second locking knob in the present invention being locked on the second mounting wall; Fig.13 for Fig.12 Schematic diagram of the enlarged structure at D in the middle; Fig.14 It is a schematic diagram of the partially exploded structure of the air guide plate and the second mounting wall in the present invention; Fig.15 It is a schematic diagram of the three-dimensional structure of the leaf cutting mechanism of the present invention installed on the frame; Fig.16 It is a schematic diagram of the three-dimensional structure of the vane guide plate and the blade cutting mechanism in the present invention; Fig.17 It is a partial cross-sectional structural schematic diagram of the cooperation and connection between the guide vane plate and the blade cutting mechanism in the present invention; Fig.18 It is a schematic diagram of the exploded structure of the guide vane plate and the blade cutting mechanism in the present invention. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below with reference to the accompanying drawings.

[0031] As shown in the figure, a tea picking machine includes a frame 1, on which a leaf cutting mechanism and an air supply mechanism are arranged, an air guide plate 2 is arranged at the rear of the leaf cutting mechanism, the air supply mechanism includes a fan body 3 and an air guide duct 4, the air guide duct 4 has an air guide cavity 5 with an opening at the left end, the left end of the air guide duct 4 is connected to the air outlet 6 of the fan body 3, and the air guide duct 4 is provided with an air supply port 7 connected to the air guide cavity 5. The frame 1 includes a first mounting wall 8 and a second mounting wall 9 which are spaced apart and arranged opposite to each other on the left and right sides, the fan body 3 is rotatably mounted on the first mounting wall 8, the right end of the air guide duct 4 is rotatably mounted on the second mounting wall 9, the air guide duct 4 is located between the first mounting wall 8 and the second mounting wall 9, the air supply port 7 supplies air to the leaf cutting mechanism, and a first locking device for locking the air supply angle of the air supply port 7 is arranged between the fan assembly and the frame 1.

[0032] In this specific embodiment, a connection cover 10 for rotatably connecting and installing with the first mounting wall 8 is provided on the fan body 3, and the connection cover 10 is provided on the outer side of the first mounting wall 8. The connection cover 10 and the first mounting wall 8 are rotatably connected through a first rotating shaft 11, and the right end of the air guide 4 is rotatably connected with the second mounting wall 9 through a second rotating shaft 12. The structure is simple and the rotation connection is stable.

[0033] In this specific embodiment, a connecting wall 13 is provided on the right side of the connecting cover 10, and a first locking device is provided between the connecting wall 13 and the first mounting wall 8; The first locking device includes a first locking knob 14, which includes a knob head 15 and a threaded connecting rod 16. A locking mounting hole 17 that passes through the left and right sides is provided on the connecting wall 13. The first rotating shaft 11 rotates to drive the locking mounting hole 17 to change its position around the central axis of the first rotating shaft 11. The first mounting wall 8 is provided with a plurality of locking columns 19 with internal threaded locking holes 18 that match the threaded connecting rod 16. One locking column 19 corresponds to the change position of one locking mounting hole 17. The threaded connecting rod 16 passes through the locking mounting hole 17 and is screwed into the corresponding locking column 19 to achieve the locking of the air supply angle of the air supply port 7. The above-mentioned locking device has a simple structure, and the centers of the plurality of locking columns 19 are located on the circumference of a concentric circle. The positions of the plurality of locking columns 19 are designed and arranged according to the commonly used air supply angles for specific air supply. The operations of locking and unlocking are relatively convenient, low in cost, and stable in locking.

[0034] In this specific embodiment, a rotation angle marking area 20 is provided on the first mounting wall 8, and an indicating arrow 21 is provided on the connecting wall surface 13 in the direction of the rotation angle marking area 20. This facilitates the operator to accurately adjust the air supply angle according to specific usage conditions.

[0035] In this specific embodiment, a first rotating shaft 11 is provided on the connecting wall surface 13 protruding to the right, and a first rotating connecting hole 22 for the first rotating shaft 11 to be rotatably inserted and installed is correspondingly provided on the first installation wall 8. The first rotating shaft 11 is inserted into the first rotating connecting hole 22 and can rotate in the first rotating connecting hole 22. An internal thread connection hole (not marked in the figure) is opened at the right end of the first rotating shaft 11, and a matching screw rod 23 with a knob is screwed into the internal thread connection hole to realize the anti-drop positioning installation of the first rotating shaft 11 on the first mounting wall 8, wherein the screw rod is screwed into the internal thread connection hole, and the knob on the screw rod is located at the right side of the first mounting wall 8. The first rotating shaft 11 is stably rotated and installed on the first mounting wall 8, with a simple structure, low cost, and stability.

[0036] In this specific embodiment, the right end of the air guide 4 is protruded to the right and is provided with a second rotating shaft 12, and the second mounting wall 9 is correspondingly provided with a second rotating connection hole 24 for the second rotating shaft 12 to be rotatably inserted and installed, and the second rotating shaft 12 is inserted and arranged in the second rotating connection hole 24 and can rotate in the second rotating connection hole 24; An internal thread connection hole (not marked in the figure) is provided at the right end of the second rotating shaft 12, and a matching screw rod 23 with a knob is screwed into the internal thread connection hole to realize the anti-drop positioning installation of the second rotating shaft 12 on the second mounting wall 9, wherein the screw rod is screwed into the internal thread connection hole, and the knob on the screw rod is located at the right side of the second mounting wall 9. The second rotating shaft 12 is stably rotated and installed on the second mounting wall 9, with a simple structure, low cost, and stability.

[0037] In this specific embodiment, the fan body 3 is driven by a driving motor 25, and the driving motor 25 is disposed in the connection cover 10. The connection cover 10 also protects the driving motor 25.

[0038] In this specific embodiment, a recessed opening 26 is provided on the first mounting wall 8, and the corresponding position of the fan body 3 is embedded in the recessed opening 26. This makes the overall structure neat and compact without any particularly obtrusive parts.

[0039] In this specific embodiment, a connecting shaft 27 is arranged across the air guide plate 2, and the connecting shaft 27 is arranged between the first mounting wall 8 and the second mounting wall 9, and the first end of the connecting shaft 27 is rotatably mounted on the first mounting wall 8, and the second end of the connecting shaft 27 is rotatably mounted on the second mounting wall 9, so that the air guide plate 2 can be rotatably mounted between the first mounting wall 8 and the second mounting wall 9 around the axis, and a second locking device for locking the rotational position of the air guide plate 2 is arranged between the air guide plate 2 and the frame 1. The structure is simple. The air guide plate 2 is rotatably arranged on the frame 1 through a connecting shaft 27, so that the air guide angle of the air guide plate 2 is adjustable, which is convenient for adjusting the air guide angle of the air guide plate 2 according to different varieties and specifications of tea leaves. The parabola formed by the air guide plate 2 blows unnecessary residual leaves to the outside, and as few residual leaves as possible are collected in the tea collection part together with the usable tea leaves, which is convenient for the subsequent screening of the quality of the picked tea leaves and improves the later screening efficiency. At the same time, the versatility of the whole machine is better, and the use cost is also effectively reduced. After the angle adjustment of the air guide plate 2 is completed, the position is locked by the second locking device.

[0040] In this specific embodiment, the front end of the air guide plate 2 is wound and fixedly arranged on the connecting shaft 27, so that the air guide plate 2 is stably fixedly installed on the connecting shaft 27.

[0041] In this specific embodiment, the rear end of the wind guide plate 2 is bent upward obliquely to form a bent portion 28. This facilitates the blowing wind to form a parabola and blow the unnecessary residual leaves outside.

[0042] In this specific embodiment, the second locking device includes a second locking knob 29 arranged at the outer side of the second mounting wall 9, the end of the first end of the connecting shaft 27 extends out of the second mounting wall 9 and is fixedly connected to the center of the second locking knob 29, a locking steel ball 30 is telescopically eccentrically arranged on the end surface of the second locking knob 29 opposite to the second mounting wall 9, the second locking knob 29 rotates to drive the connecting shaft 27 to rotate, and synchronously drives the locking steel ball 30 to change its position around the central axis of the connecting shaft 27, and the second mounting wall 9 is provided with a plurality of through locking holes 31 for the locking steel ball 30 to be embedded and installed, one locking hole 31 corresponds to the changing position of one locking steel ball 30, and the locking steel ball 30 is embedded and set in one of the locking holes 31 to achieve the locking of the rotation position of the air guide plate 2. The positions of the plurality of locking holes 31 are designed and arranged according to the specific use angle, and the locking and unlocking operations are relatively convenient, low in cost and stable in locking.

[0043] In this specific embodiment, the centers of the plurality of locking holes 31 are located on a circumference line of a concentric circle.

[0044] In this specific embodiment, a concave cavity 32 is recessed on the end surface of the second locking knob 29 opposite to the second mounting wall 9, a positioning column 33 is protruding in the concave cavity 32 toward the second mounting wall 9, a positioning cavity 34 opening toward the second mounting wall 9 is provided in the positioning column 33, a compression spring 35 and a locking steel ball 30 are sequentially arranged in the positioning cavity 34 in the direction toward the second mounting wall 9, and the locking steel ball 30 is telescopically movable in the positioning cavity 34 by cooperating with the compression spring 35. In the locked state, the corresponding part of the locking steel ball 30 extends out of the positioning cavity 34 and is embedded in one of the locking holes 31. Stable telescopic installation of the locking steel ball 30 on the locking knob is achieved.

[0045] In this specific embodiment, a gap 36 is provided between the end surface of the positioning column 33 opposite to the second mounting wall 9 and the second mounting wall 9, and the gap 36 is smaller than the ball diameter of the locking steel ball 30. It is ensured that the locking steel ball 30 will not fall off during the rotation of the second locking knob 29, ensuring the overall stable use.

[0046] In this specific embodiment, an indicator mark 37 is provided on the second mounting wall 9 at the position of each locking hole 31. According to the specifications of tea leaves, three locking holes 31 are usually provided, corresponding to thick buds, medium buds and thin buds, respectively, so that the operator can accurately adjust the air guide angle according to the specific usage. In this specific embodiment, the leaf shearing mechanism includes a fixed leaf shearing plate 38 and a movable leaf shearing plate 39. The fixed leaf shearing plate 38 is fixedly arranged between the first mounting wall 8 and the second mounting wall 9. The movable leaf shearing plate 39 can be movably arranged on the fixed leaf shearing plate 38. The front end of the air guide plate 2 is arranged close to the rear end surface of the fixed leaf shearing plate 38. A guide plate 41 with a guide vane groove 40 is detachably arranged below the fixed leaf shearing plate 38. The guide plate 41 with the guide vane groove 40 is detachably installed below the fixed leaf shearing plate 38, so that the guide plate 41 can be replaced. Then, for tea leaves of different specifications, a guide plate 41 with a guide vane groove 40 of matching specifications can be selected, so that the versatility of the whole machine is better and the use cost is effectively reduced.

[0047] In this specific embodiment, a plurality of first shearing grooves 42 with front openings are arranged at intervals from left to right on the fixed shearing plate 38, a plurality of second shearing grooves 43 with front openings are arranged at intervals from left to right on the movable shearing plate 39, and a guide groove 40 with front openings is arranged at a position corresponding to each first shearing groove 42 on the guide plate 41. When in use, the guide plate 41 first contacts the tea tree, and the corresponding tea leaf matching the guide groove 40 enters the guide groove 40 and the first shearing groove 42, and the leaf entering the guide groove 40 is sheared off by the leaf shearing mechanism.

[0048] In this specific embodiment, the left and right side walls of the first shearing groove 42 are mirror-symmetrical oblique first shearing surfaces 44, and the left and right side walls of the second shearing groove 43 are mirror-symmetrical oblique second shearing surfaces 45. The first shearing surface 44 is inclined outward from top to bottom, and the second shearing surface 45 is inclined inward from top to bottom. The first shearing surface 44 and the corresponding second shearing surface 45 cooperate to shear off the tea leaves neatly.

[0049] In this specific embodiment, the guide vane groove 40 divides the front part of the guide vane plate 41 into a plurality of guide vane strips 46, and the front end of the guide vane strips 46 is bent upward to form a barrier 47. The barrier 47 forms a barrier effect on the blades, which facilitates the shearing of the blades by the blade cutting mechanism.

[0050] In this specific embodiment, the vane guide plate 41 is detachably connected to the fixed vane shear plate 38 by means of bolts 48. The installation and disassembly are convenient, the structure is simple, the cost is low, and the installation is stable.

[0051] In this specific embodiment, a plurality of waist-shaped guide grooves 49 are provided from left to right and are passed through vertically on the movable blade shearing plate 39, and a plurality of guide protrusions 50 are provided on the fixed blade shearing plate 38, one guide protrusion 50 corresponds to one waist-shaped guide groove 49, and the guide protrusion 50 is embedded in the corresponding waist-shaped guide groove 49, and the length of the waist-shaped guide groove 49 in the left-right direction is greater than the length of the guide protrusion 50 in the left-right direction. Through the cooperation of the guide protrusion 50 and the waist-shaped guide groove 49, the movable blade shearing plate 39 can achieve stable left-right movement operation relative to the fixed blade shearing plate 38.

[0052] In this specific embodiment, the guide protrusion 50 is provided with a vertically penetrating mounting hole 51, the guide vane plate 41 is provided with a vertically penetrating mounting screw hole 52 coaxial with the mounting hole 51, and the rod of the bolt 48 passes through the waist-shaped guide groove 49 and the mounting hole 51 in sequence and is screwed into the corresponding mounting screw hole 52. The structure is simple, and the three are connected and installed with each other through the bolt 48.

[0053] In this specific embodiment, a washer 53 is provided between the head of the bolt 48 and the guide protrusion 50, and the washer 53 is sleeved on the bolt 48, and the outer diameter of the washer 53 is larger than the width of the waist-shaped guide groove 49 in the front-to-back direction, thereby ensuring a stable connection and installation between the fixed blade shearing plate 38 and the movable blade shearing plate 39.

[0054] When the air supply angle of the fan needs to be adjusted, first remove the threaded connecting rod 16 of the first locking knob 14 from one of the locking columns 19, then the lock is released, rotate the air duct 4, and after the air supply angle is adjusted to the right position, screw the threaded connecting rod 16 of the first locking knob 14 into the corresponding locking column 19 again to re-lock the position. The air supply angle of the air duct 4 corresponding to each locking position is different, and different air supply angles are designed for different varieties of tea, generally divided into four blowing angles (30° position, 15° position, 0° position and -15° position). When picking tender tea leaves, the angle of the air duct 4 is adjusted to a smaller angle so that the tender tea leaves will not be blown away. When picking older coarse tea leaves, the angle of the air duct 4 is adjusted to a straight angle so that the tea leaves can be directly blown into the tea collection bag.

[0055] The fan adopts a powerful vortex fan blade system, which forms multiple air duct designs through 4 diversions through a single air duct. The vortex fan blade system can adjust the air volume through electronic control and can achieve precise wind control. Different air volumes can be selected for different varieties of tea, thereby reducing the occurrence of tea leaves not being blown into the collection bag or being blown outside during the picking process, effectively reducing tea waste.

[0056] The guide plate 40 with different guide grooves 41 can be selected according to the growth of the tea leaves of the year. If the tea leaves grow vigorously, the guide grooves 41 with wider openings can be used. If the tea leaves grow sparsely, the guide grooves 41 with narrower openings can be used, thereby improving the picking quality and making it difficult to guide the residual leaves or old leaves into the leaf cutting mechanism. It can also play a certain protective role on the entire tea tree and will not damage the branches.

Claims

1. A tea picking machine, comprising a frame, on which a leaf cutting mechanism and an air supply mechanism are arranged, and an air guide plate is arranged behind the leaf cutting mechanism, characterized in that The air supply mechanism includes a fan body and an air duct, the air duct has an air guide cavity with an opening at the left end, the left end of the air duct is connected to the air outlet of the fan body, the air duct is provided with an air supply port connected to the air guide cavity, the frame includes a first mounting wall and a second mounting wall which are spaced apart and opposite to each other on the left and right sides, the fan body is rotatably mounted on the first mounting wall, the right end of the air duct is rotatably mounted on the second mounting wall, the air duct is located between the first mounting wall and the second mounting wall, the air supply port supplies air to the blade cutting mechanism, and a first locking device for locking the air supply angle of the air supply port is provided between the air supply mechanism and the frame.

2. A tea picking machine as claimed in claim 1, characterized in that The fan body is provided with a connecting cover for rotatably connecting and installing with the first mounting wall. The connecting cover is arranged on the outer side of the first mounting wall. The connecting cover and the first mounting wall are rotatably connected via a first rotating shaft. The right end of the air duct is rotatably connected to the second mounting wall via a second rotating shaft.

3. A tea picking machine as claimed in claim 2, characterized in that The right side of the connecting cover is provided with a connecting wall, and the first locking device is provided between the connecting wall and the first mounting wall; The first locking device includes a first locking knob, and the first locking knob includes a knob head and a threaded connecting rod. The connecting wall surface is provided with a locking mounting hole that passes through the left and right sides. The rotation of the first rotating shaft drives the locking mounting hole to change its position around the central axis of the first rotating shaft. The first mounting wall is provided with a plurality of locking columns with internal threaded locking holes that match the threaded connecting rod. One locking column corresponds to the changed position of one locking mounting hole. The air supply angle of the air supply outlet is locked by the threaded connecting rod passing through the locking mounting hole and being screwed in the corresponding locking column.

4. A tea picking machine as claimed in claim 2, characterized in that A connecting shaft is arranged across the air guide plate, and the connecting shaft is arranged between the first mounting wall and the second mounting wall. The first end of the connecting shaft is rotatably mounted on the first mounting wall, and the second end of the connecting shaft is rotatably mounted on the second mounting wall, so that the air guide plate can be rotatably mounted between the first mounting wall and the second mounting wall around the axis, and a second locking device for locking the rotational position of the air guide plate is arranged between the air guide plate and the frame.

5. A tea picking machine as claimed in claim 4, characterized in that The second locking device includes a second locking knob arranged on the outer side of the second mounting wall, the end of the first end of the connecting shaft extends out of the second mounting wall and is fixedly connected to the center of the second locking knob, and a locking steel ball is telescopically and eccentrically arranged on the end surface of the second locking knob opposite to the second mounting wall, the rotation of the second locking knob drives the connecting shaft to rotate, and synchronously drives the locking steel ball to change its position around the central axis of the connecting shaft, and the second mounting wall is provided with a plurality of through locking holes for the locking steel balls to be embedded and installed, one locking hole corresponds to the changing position of one locking steel ball, and the locking steel ball is embedded in one of the locking holes to achieve the locking of the rotation position of the air guide plate.

6. A tea picking machine as claimed in claim 5, characterized in that A concave cavity is recessed on the end surface of the second locking knob opposite to the second mounting wall, a positioning column is protruding in the concave cavity toward the direction of the second mounting wall, the positioning column has a positioning cavity opening in the direction of the second mounting wall, a compression spring and a locking steel ball are sequentially arranged in the positioning cavity in the direction toward the second mounting wall, and the locking steel ball can be telescopically moved in the positioning cavity by cooperating with the compression spring. In the locked state, the corresponding part of the locking steel ball extends out of the positioning cavity and is embedded in one of the locking holes.

7. A tea picking machine as claimed in claim 6, characterized in that A gap is provided between the end surface of the positioning column opposite to the second mounting wall and the second mounting wall, and the gap is smaller than the ball diameter of the locking steel ball.

8. A tea picking machine as claimed in claim 1, characterized in that The blade cutting mechanism includes a fixed blade cutting plate and a movable blade cutting plate. The fixed blade cutting plate is fixedly arranged between the first mounting wall and the second mounting wall. The movable blade cutting plate can be movably arranged left and right on the fixed blade cutting plate. The front end of the air guide plate is arranged close to the rear end surface of the fixed blade cutting plate. A guide plate with a guide groove is detachably arranged below the fixed blade cutting plate.

9. A tea picking machine as claimed in claim 8, characterized in that The fixed shearing plate is provided with a plurality of first shearing grooves with front openings at intervals from left to right, the movable shearing plate is provided with a plurality of second shearing grooves with front openings at intervals from left to right, and a guide vane groove with front opening is provided on the guide vane plate at a position corresponding to each of the first shearing grooves.

10. A tea picking machine as claimed in claim 9, characterized in that The guide vane groove divides the front part of the guide vane plate into a plurality of guide vane strips, and the front end of the guide vane strips is bent upward to form a baffle.

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