Tea-leaf picker

Abstract

The utility model discloses a tea-leaf picker which comprises a machine frame, a leaf cutting mechanism and an air supply mechanism are arranged on the machine frame, an air guide plate is arranged behind the leaf cutting mechanism in a bearing mode, and the tea-leaf picker 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 utility model relates to the technical field of tea picking equipment, in particular to a tea picking machine. Background Art

[0002] The planting and processing of tea have a long history in China. The tea picking technology is an important part of tea tree cultivation technology. Traditionally, manual tea picking is basically adopted, which has low efficiency and high labor cost. In order to improve the picking efficiency and reduce the cost at the same time, the tea picking machine came into being. The tea picking machine is a crop harvesting machine that harvests new and tender tea leaves from the top of the tea tree.

[0003] The tea picking machine usually consists of a power part, a blowing part, a leaf shearing part and a tea collection part. The leaf shearing part is driven by the power part to pick the tea leaves, and the picked tea leaves are blown into the tea collection part by the blowing mechanism. The basic component of the blowing mechanism of the common tea picking machines on the market is usually a fan, and the fan is basically fixedly installed on the machine, resulting in a fixed blowing angle. During the process of tea picking and collection, the blowing angle will affect the collection effect of the tea leaves. An improper blowing 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 utility model is to provide a tea picking machine with a simple structure and an adjustable blowing angle.

[0005] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0006] A tea picking machine includes a frame. A leaf shearing mechanism and a blowing mechanism are arranged on the frame. A wind guide plate is arranged behind the leaf shearing mechanism. The blowing mechanism includes a fan body and a wind guide pipe. The wind guide pipe has a wind guide cavity with an opening at the left end. The left end of the wind guide pipe is connected to the air outlet of the fan body. An air outlet communicating with the wind guide cavity is arranged on the wind guide pipe. The frame includes a first installation wall and a second installation wall which are spaced apart left and right and opposite to each other. The fan body is rotatably installed on the first installation wall. The right end of the wind guide pipe is rotatably installed on the second installation wall. The wind guide pipe is located between the first installation wall and the second installation wall. The air outlet blows air towards the leaf shearing mechanism. A first locking device for locking the blowing angle of the air outlet is arranged between the blowing mechanism and the frame.

[0007] A connection cover for rotatably connecting and installing with the first mounting wall is provided on the blower body. The connection cover is arranged on the outer side of the first mounting wall. The connection cover and the first mounting wall are rotatably connected by a first rotating shaft. The right end of the air duct is rotatably connected with the second mounting wall by a second rotating shaft. The structure is simple and the rotating connection is stable.

[0008] A connection wall surface is provided on the right side of the connection cover. A first locking device is arranged between the connection wall surface and the first mounting wall.

[0009] The first locking device includes a first locking knob. The first locking knob includes a knob head and a threaded connecting rod portion. A locking mounting hole penetrating left and right is provided on the connection wall surface. The first rotating shaft drives the locking mounting hole to change its position around the central axis of the first rotating shaft. A plurality of locking columns with internal thread locking holes matching the threaded connecting rod portion are provided on the first mounting wall. One locking column corresponds to the changing position of one locking mounting hole. The air supply angle of the air supply port is locked by screwing the threaded connecting rod portion through the locking mounting hole and into the corresponding locking column. 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 common air supply angles used in specific air supply applications. The operations of locking and unlocking are both relatively convenient, with low cost and stable locking.

[0010] A rotation angle marking area is provided on the first mounting wall. An indicating arrow is provided on the connection wall surface in the direction towards the rotation angle marking area. It is convenient for the operator to accurately adjust the air supply angle according to the specific usage situation.

[0011] The first rotating shaft protrudes rightward on the connection wall surface. A first rotating connection hole for rotatably inserting and installing the first rotating shaft is correspondingly provided on the first mounting wall. The first rotating shaft extends into and is arranged in the first rotating connection hole and can rotate in the first rotating connection hole.

[0012] An internal thread connection hole is provided at the right end of the first rotating shaft. The anti - detachment and positioning installation of the first rotating shaft on the first mounting wall is realized by screwing a screw with a knob into the internal thread connection hole. Among them, 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. It realizes the stable rotating installation of the first rotating shaft on the first mounting wall, with a simple structure, low cost, and stability.

[0013] The right end of the air duct is provided with a protruding second rotating shaft, and a second rotating connection hole for the second rotating shaft to rotatably extend into and be installed is correspondingly provided on the second mounting wall. The second rotating shaft extends into the second rotating connection hole and can rotate within the second rotating connection hole;

[0014] The right end of the second rotating shaft is provided with an internally threaded connection hole. The anti - detachment and positioning installation of the second rotating shaft on the second mounting wall is realized by screwing a screw with a knob into the internally threaded connection hole. Among them, the screw is screwed into the internally threaded connection hole, and the knob on the screw is located on the right side of the second mounting wall. It realizes the stable rotational installation of the second rotating shaft on the second mounting wall, with simple structure, low cost, and stability.

[0015] The fan body is driven by a driving motor, and the driving motor is arranged inside the connection cover. The connection cover also plays a role in protecting the driving motor.

[0016] A recessed opening is recessed on the first mounting wall, and the corresponding position of the fan body is embedded in the recessed opening. This makes the overall structure neater and more compact, without particularly prominent parts.

[0017] A connecting shaft is horizontally arranged across the air deflector. 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 installed on the first mounting wall, and the second end of the connecting shaft is rotatably arranged on the second mounting wall, realizing that the air deflector is rotatably installed between the first mounting wall and the second mounting wall around the shaft. A second locking device for locking the rotation position of the air deflector is arranged between the air deflector and the frame. The structure is simple. The air deflector is rotatably arranged on the frame through a connecting shaft, realizing that the air guiding angle of the air deflector is adjustable, which is convenient for adjusting the air guiding angle of the air deflector for different varieties and specifications of tea leaves. The parabola formed by the air deflector blows the unnecessary residual leaves to the outside, minimizing the situation where the residual leaves are collected together with the usable tea leaves into the tea collection part, facilitating the subsequent screening of the quality of the picked tea leaves, improving the later screening efficiency, and at the same time making the versatility of the whole machine better and effectively reducing the use cost; after the air deflector angle adjustment is completed, the position is locked by the second locking device.

[0018] The front end of the air deflector is wound and fixed on the connecting shaft. It realizes the stable fixed installation of the air deflector on the connecting shaft.

[0019] The rear end of the air deflector is obliquely bent upward to form a bent portion, which facilitates the wind blowing over to form a parabola and can blow the unnecessary residual leaves outside.

[0020] 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 and eccentrically arranged on the end face of the second locking knob opposite to the second mounting wall. The rotation of the second locking knob drives the rotation of the connecting shaft, synchronously driving the locking steel ball to change its position around the central axis of the connecting shaft. A plurality of through locking holes for embedding and installing the locking steel ball are arranged on the second mounting wall. One of the locking holes corresponds to the changing position of one of the locking steel balls. By embedding the locking steel ball into one of the locking holes, the rotation position of the air deflector is locked. The positions of the plurality of locking holes are designed and arranged according to the specific use angle, and the operations of locking and unlocking are relatively convenient, with low cost and stable locking.

[0021] The centers of the plurality of locking holes are located on the circumference of a concentric circle.

[0022] A cavity is recessed on the end face of the second locking knob opposite to the second mounting wall. A positioning post protrudes in the direction of the second mounting wall in the cavity. A positioning cavity with an opening in the direction of the second mounting wall is formed in the positioning post. A compression spring and the locking steel ball are sequentially arranged in the positioning cavity in the direction of the second mounting wall. The telescopic movement of the locking steel ball in the positioning cavity is realized 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. The stable telescopic installation of the locking steel ball on the locking knob is realized.

[0023] A gap is provided between the end face of the positioning post 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. This ensures that during the rotation of the second locking knob, the locking steel ball will not fall off, ensuring the stable use of the whole.

[0024] Indicator marks are provided on the second mounting wall at the positions corresponding to each of the locking holes. According to the specifications of the tea leaves, usually three locking holes are provided, corresponding to thick buds, medium buds and thin buds respectively, which is convenient for the operator to accurately adjust the air guiding angle according to the specific use situation.

[0025] The described leaf shearing mechanism includes a fixed leaf shearing plate and a movable leaf shearing plate. The fixed leaf shearing plate is fixedly arranged between the first mounting wall and the second mounting wall. The movable leaf shearing plate is arranged on the fixed leaf shearing plate so as to be movable left and right. The front end of the air guide plate is closely arranged behind the rear end face of the fixed leaf shearing plate. A guide vane plate with a guide vane groove is detachably arranged below the fixed leaf shearing plate. By detachably installing a guide vane plate with a guide vane groove below the fixed leaf shearing plate, the replaceability of the guide vane plate is realized. Then, for tea tree leaves of different specifications, a guide vane plate with a guide vane groove of a matching specification can be selected, so that the universality of the whole machine is better and the use cost is effectively reduced.

[0026] A plurality of first shearing grooves with front openings are arranged on the fixed leaf shearing plate at intervals from left to right. A plurality of second shearing grooves with front openings are arranged on the movable leaf shearing plate at intervals from left to right. A guide vane groove with a front opening is arranged at the position corresponding to each of the first shearing grooves on the guide vane plate. During specific use, the guide vane plate first contacts the tea tree, and the corresponding tea tree leaves matched with the guide vane groove enter the guide vane groove and then enter the first shearing groove, and the leaves entering the guide vane groove are sheared off by the leaf shearing mechanism.

[0027] The left and right side walls of the first shearing groove are inclined first shearing surfaces that are mirror-symmetrical. The left and right side walls of the second shearing groove are inclined second shearing surfaces that are mirror-symmetrical. The first shearing surface is inclined outward from top to bottom, and the second shearing surface is inclined inward from top to bottom. The first shearing surface and the corresponding second shearing surface cooperate to neatly shear off the tea tree leaves.

[0028] The guide vane groove divides the front part of the guide vane plate into a plurality of guide vane strips, and the front end heads of the guide vane strips are bent upward to form blocking parts. The blocking parts play a blocking role on the leaves, which is convenient for the leaf shearing mechanism to shear the leaves.

[0029] The guide vane plate and the fixed leaf shearing plate are detachably connected by bolts. The installation and disassembly are convenient, the structure is simple, the cost is low, and the installation is stable.

[0030] A plurality of vertically-through oblong guide grooves are arranged on the movable leaf shearing plate at intervals from left to right. A plurality of guide protrusions are convexly arranged on the fixed leaf shearing plate. One guide protrusion corresponds to one oblong guide groove, and the guide protrusion is embedded in the corresponding oblong guide groove. The length of the oblong 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 oblong guide groove, the stable left-right movement operation of the movable leaf shearing plate relative to the fixed leaf shearing plate is realized.

[0031] 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.

[0032] 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.

[0033] Compared with the prior art, the advantages of the utility model 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 port 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

[0034] Figure 1 It is a schematic diagram of the first three-dimensional structure of the utility model;

[0035] Figure 2 It is a side view structural schematic diagram of the utility model;

[0036] Figure 3 This is a first cross-sectional structural schematic diagram of the utility model;

[0037] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0038] Figure 5 It is a second cross-sectional structural schematic diagram of the utility model;

[0039] Figure 6 for Figure 5 A schematic diagram of the enlarged structure at B in the middle;

[0040] Figure 7 This is a schematic diagram of the three-dimensional structure of the utility model with the fan assembly removed;

[0041] Figure 8 It is a second three-dimensional structural schematic diagram of the utility model;

[0042] Figure 9 This is a cross-sectional structural diagram of the utility model in which the air guide plate is installed on the frame;

[0043] Figure 10 This is a three-dimensional structural schematic diagram of the air deflector cooperating with the first installation wall in the present utility model;

[0044] Figure 11 is Figure 10 an enlarged structural schematic diagram at position C in

[0045] Figure 12 This is a cross-sectional structural schematic diagram of the second locking knob cooperating and locking on the second installation wall in the present utility model;

[0046] Figure 13 is Figure 12 an enlarged structural schematic diagram at position D in

[0047] Figure 14 This is a partial exploded structural schematic diagram of the air deflector cooperating with the second installation wall in the present utility model;

[0048] Figure 15 This is a three-dimensional structural schematic diagram of the leaf shearing mechanism installed on the frame in the present utility model;

[0049] Figure 16 This is a three-dimensional structural schematic diagram of the guide vane plate cooperating and connecting with the leaf shearing mechanism in the present utility model;

[0050] Figure 17 This is a partial cross-sectional structural schematic diagram of the guide vane plate cooperating and connecting with the leaf shearing mechanism in the present utility model;

[0051] Figure 18 This is an exploded structural schematic diagram of the guide vane plate and the leaf shearing mechanism in the present utility model. Specific embodiments

[0052] The present utility model will be further described in detail below in conjunction with the embodiments with reference to the drawings.

[0053] As shown in the figure, a tea plucking machine includes a frame 1, a leaf shearing mechanism and an air supply mechanism are arranged on the frame 1, an air deflector 2 is arranged behind the leaf shearing mechanism, the air supply mechanism includes a fan body 3 and a duct 4, the duct 4 has an air guide cavity 5 with an open left end, the left end of the duct 4 is connected to the air outlet 6 of the fan body 3, an air supply port 7 communicating with the air guide cavity 5 is arranged on the duct 4, the frame 1 includes a first installation wall 8 and a second installation wall 9 which are spaced left and right and opposite to each other, the fan body 3 is rotatably installed on the first installation wall 8, the right end of the duct 4 is rotatably installed on the second installation wall 9, the duct 4 is located between the first installation wall 8 and the second installation wall 9, the air supply port 7 blows air towards the leaf shearing 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.

[0054] In this specific embodiment, a connection cover 10 is provided on the fan body 3 for rotatably connecting and installing with the first mounting wall 8. The connection cover 10 is arranged 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. The right end of the air duct 4 and the second mounting wall 9 are rotatably connected through a second rotating shaft 12. The structure is simple and the rotating connection is stable.

[0055] In this specific embodiment, a connection wall surface 13 is provided on the right side of the connection cover 10, and a first locking device is arranged between the connection wall surface 13 and the first mounting wall 8;

[0056] The first locking device includes a first locking knob 14. The first locking knob 14 includes a knob head 15 and a threaded connecting rod portion 16. A locking mounting hole 17 that penetrates left and right is provided on the connection wall surface 13. The rotation of the first rotating shaft 11 drives the locking mounting hole 17 to change its position around the central axis of the first rotating shaft 11. A plurality of locking columns 19 with internal thread locking holes 18 that cooperate with the threaded connecting rod portion 16 are provided on the first mounting wall 8. One locking column 19 corresponds to the changing position of one locking mounting hole 17. The air supply angle of the air supply port 7 is locked by screwing the threaded connecting rod portion 16 through the locking mounting hole 17 and screwing it into the corresponding locking column 19. The above-mentioned locking device has a simple structure. 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 common air supply angles used in specific air supply applications. The operations of locking and unlocking are both relatively convenient, with low cost and stable locking.

[0057] 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 connection wall surface 13 in the direction towards the rotation angle marking area 20. It is convenient for the operator to accurately adjust the air supply angle according to the specific usage situation.

[0058] In this specific embodiment, the first rotating shaft 11 protrudes rightward on the connection wall surface 13, and a first rotating connection hole 22 for the first rotating shaft 11 to rotatably extend into and install is correspondingly provided on the first mounting wall 8. The first rotating shaft 11 extends into and is arranged in the first rotating connection hole 22 and can rotate in the first rotating connection hole 22;

[0059] An internal thread connection hole (not marked in the figure) is provided at the right end of the first rotating shaft 11. The first rotating shaft 11 is stably installed on the first mounting wall 8 against detachment by screwing a screw rod 23 with a knob into the internal thread connection hole. Among them, the screw rod is screwed into the internal thread connection hole, and the knob on the screw rod is located on the right side of the first mounting wall 8. The stable rotational installation of the first rotating shaft 11 on the first mounting wall 8 is realized, with a simple structure, low cost, and stability.

[0060] In this specific embodiment, the right end of the air duct 4 is provided with a second rotating shaft 12 protruding to the right. A second rotating connection hole 24 for the second rotating shaft 12 to rotatably extend into and be installed is correspondingly provided on the second installation wall 9. The second rotating shaft 12 extends into and is arranged in the second rotating connection hole 24 and can rotate in the second rotating connection hole 24;

[0061] The right end of the second rotating shaft 12 is provided with an internally threaded connection hole (not marked in the figure). The second rotating shaft 12 is anti - detachment and positioned on the second installation wall 9 by screwing a screw rod 23 with a knob into the internally threaded connection hole. Among them, the screw rod is screwed into the internally threaded connection hole, and the knob on the screw rod is located on the right side of the second installation wall 9. The stable rotational installation of the second rotating shaft 12 on the second installation wall 9 is realized, with a simple structure, low cost, and high stability.

[0062] In this specific embodiment, the fan body 3 is driven by a driving motor 25, and the driving motor 25 is arranged in the connection cover 10. The connection cover 10 also plays a role in protecting the driving motor 25.

[0063] In this specific embodiment, a recessed opening 26 is recessed on the first installation wall 8, and the corresponding position of the fan body 3 is embedded in the recessed opening 26. This makes the overall structure neater and more compact without particularly prominent parts.

[0064] In this specific embodiment, a connecting shaft 27 is horizontally arranged across the air deflector 2. The connecting shaft 27 is arranged between the first installation wall 8 and the second installation wall 9, and the first end of the connecting shaft 27 is rotatably installed on the first installation wall 8, and the second end of the connecting shaft 27 is rotatably arranged on the second installation wall 9, realizing that the air deflector 2 is rotatably installed between the first installation wall 8 and the second installation wall 9. A second locking device for locking the rotational position of the air deflector 2 is arranged between the air deflector 2 and the frame 1. The structure is simple. The air deflector 2 is rotatably arranged on the frame 1 through a connecting shaft 27, realizing that the air guiding angle of the air deflector 2 is adjustable, which is convenient for adjusting the air guiding angle of the air deflector 2 according to different varieties and specifications of tea leaves. The parabola formed by the air deflector 2 blows the unwanted residual leaves outside, minimizing the amount of residual leaves collected together with the usable tea leaves in the tea collection part, facilitating the subsequent screening of the quality of the picked tea leaves, improving the later screening efficiency, and at the same time making the universality of the whole machine better and effectively reducing the use cost; after the angle of the air deflector 2 is adjusted, the position is locked by the second locking device.

[0065] In this specific embodiment, the front end of the air deflector 2 is wound and fixed on the connecting shaft 27. The stable fixed installation of the air deflector 2 on the connecting shaft 27 is realized.

[0066] In this specific embodiment, the rear end of the air deflector 2 is obliquely bent upward to form a bent portion 28. This facilitates the wind blowing over to form a parabola, enabling the blowing of unwanted residual leaves to the outside.

[0067] In this specific embodiment, the second locking device includes a second locking knob 29 provided on 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 and eccentrically provided on the end face of the second locking knob 29 opposite to the second mounting wall 9. When the second locking knob 29 rotates, it drives the connecting shaft 27 to rotate, synchronously driving the locking steel ball 30 to change its position around the central axis of the connecting shaft 27. A plurality of through locking holes 31 for the locking steel ball 30 to be embedded and installed are provided on the second mounting wall 9. One locking hole 31 corresponds to the changing position of one locking steel ball 30. By embedding the locking steel ball 30 into one of the locking holes 31, the rotational position of the air deflector 2 is locked. The positions of the plurality of locking holes 31 are designed and arranged according to the specific use angle, and the operations of locking and unlocking are both relatively convenient, with low cost and stable locking.

[0068] In this specific embodiment, the centers of the plurality of locking holes 31 are located on the circumference of a concentric circle.

[0069] In this specific embodiment, a concave cavity 32 is recessed on the end face of the second locking knob 29 opposite to the second mounting wall 9. A positioning post 33 is protrudingly provided in the concave cavity 32 in the direction towards the second mounting wall 9. A positioning cavity 34 with an opening in the direction towards the second mounting wall 9 is provided inside the positioning post 33. A compression spring 35 and a locking steel ball 30 are sequentially provided in the positioning cavity 34 in the direction towards the second mounting wall 9. The telescopic movement of the locking steel ball 30 in the positioning cavity 34 is realized 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. The stable telescopic installation of the locking steel ball 30 on the locking knob is realized.

[0070] In this specific embodiment, a gap 36 is provided between the end face of the positioning post 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. This ensures that during the rotation of the second locking knob 29, the locking steel ball 30 will not break away and fall off, ensuring the stable use of the whole.

[0071] In this specific embodiment, indication marks 37 are provided on the second mounting wall 9 at the positions corresponding to each locking hole 31. According to the specifications of the tea leaves, usually three locking holes 31 are provided, corresponding to thick buds, medium buds, and thin buds respectively, facilitating the operator to accurately adjust the air guiding angle according to the specific usage situation.

[0072] 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 is arranged on the fixed leaf shearing plate 38 so as to be movable left and right. The front end of the air guide plate 2 is closely arranged behind the rear end face of the fixed leaf shearing plate 38. A guide vane plate 41 with a guide vane groove 40 is detachably arranged below the fixed leaf shearing plate 38. By detachably installing the guide vane plate 41 with the guide vane groove 40 below the fixed leaf shearing plate 38, the replaceability of the guide vane plate 41 is realized. Then, for tea tree leaves of different specifications, a guide vane plate 41 with a guide vane groove 40 of a matching specification can be selected, so that the versatility of the whole machine is better and the use cost is effectively reduced.

[0073] In this specific embodiment, a plurality of first shearing grooves 42 with front openings are arranged on the fixed leaf shearing plate 38 at intervals from left to right. A plurality of second shearing grooves 43 with front openings are arranged on the movable leaf shearing plate 39 at intervals from left to right. A guide vane groove 40 with a front opening is arranged at the position corresponding to each first shearing groove 42 on the guide vane plate 41. During specific use, the guide vane plate 41 first contacts the tea tree, and the corresponding tea tree leaves matched with the guide vane groove 40 enter the guide vane groove 40 and then enter the first shearing groove 42, and the leaf shearing mechanism shears off the leaves entering the guide vane groove 40.

[0074] In this specific embodiment, the left and right side walls of the first shearing groove 42 are inclined first shearing surfaces 44 that are mirror-symmetrical. The left and right side walls of the second shearing groove 43 are inclined second shearing surfaces 45 that are mirror-symmetrical. 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 neatly shear off the tea tree leaves.

[0075] 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 heads of the guide vane strips 46 are bent upward to form blocking parts 47. The blocking parts 47 play a role in blocking the leaves, which is convenient for the leaf shearing mechanism to shear the leaves.

[0076] In this specific embodiment, the guide vane plate 41 and the fixed leaf shearing plate 38 are detachably connected by bolts 48. The installation and disassembly are convenient, the structure is simple, the cost is low, and the installation is stable.

[0077] In this specific embodiment, a plurality of vertically penetrating waist-shaped guide grooves 49 are arranged at intervals from left to right on the movable cutting blade 39, and a plurality of guide protrusions 50 are convexly arranged on the fixed cutting blade 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. 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 stable left-right movement operation of the movable cutting blade 39 relative to the fixed cutting blade 38 is realized.

[0078] In this specific embodiment, an installation hole 51 penetrating up and down is provided on the guide protrusion 50, and an installation screw hole 52 penetrating up and down coaxial with the installation hole 51 is provided on the guide vane 41. The rod portion of the bolt 48 sequentially passes through the waist-shaped guide groove 49 and the installation hole 51 and is screwed into the corresponding installation screw hole 52. The structure is simple, and the mutual connection and installation of the three are realized through the bolt 48.

[0079] In this specific embodiment, a washer 53 is provided between the head of the bolt 48 and the guide protrusion 50. The washer 53 is sleeved on the bolt 48, and the outer diameter of the washer 53 is greater than the width of the waist-shaped guide groove 49 in the front-rear direction. Ensure the stable connection and installation between the fixed cutting blade 38 and the movable cutting blade 39.

[0080] When the air supply angle of the fan needs to be adjusted, first remove the threaded connecting rod portion 16 of the first locking knob 14 from one of the locking posts 19. At this time, the locking is released. Rotate the air duct 4. After the air supply angle is adjusted in place, screw the threaded connecting rod portion 16 of the first locking knob 14 back into the corresponding locking post 19 to re-lock the position. The air supply angles of the air duct 4 corresponding to each locking position are different, and different air supply angles are designed for different varieties of tea. Generally, it is divided into four blowing angles (30° position, 15° position, 0° position, and -15° position). When picking tender tea, the angle of the air duct 4 is adjusted to be smaller so that the tender tea will not be blown away. When picking older coarse tea, the air duct 4 is adjusted straight, and the tea can be directly blown into the tea collection bag completely.

[0081] The fan adopts a powerful vortex impeller system. Through the design of forming multiple air ducts by splitting a single air duct 4, the vortex impeller system can adjust the air volume electronically and can achieve precise air control. Different air volumes can be selected for different varieties of tea, thereby reducing the situation that tea cannot be blown into the collection bag or is blown outside during the picking process, and effectively reducing tea waste.

[0082] According to the growth pattern of the tea leaves in the current year, a guide vane plate 40 with different guide vane grooves 41 can be selected. If the growth pattern of the tea leaves is relatively exuberant, a guide vane groove 41 with a wider opening can be used. If the growth pattern of the tea leaves is relatively sparse, a guide vane groove 41 with a narrower opening can be used, thereby improving the picking quality, not easily introducing residual leaves or old leaves into the leaf shearing mechanism, and also playing a certain protective role for the entire tea tree without damaging 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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