Vacuum suction type tea picking machine harvesting device

Abstract

A kind of vacuum suction type tea picker harvesting device, including frame, air duct, guide plate, baffle, be arranged between the blowing port of guide plate and baffle and shear cutter;The sliding plate that is adapted to the contour of baffle is slidably arranged on the frame, a plurality of first hole bodies are formed in the baffle, and the second hole body that is in communication with the first hole body is arranged on the sliding plate after sliding;The cleaning brush matched with shear cutter is rotatably arranged on the frame, and the sliding plate is arranged on the side of baffle towards shear cutter;The air flow channel pointing to shear cutter is formed at specific time by the cooperation of sliding plate and baffle, tea leaves remaining on cutter can be actively swept, and combined with the swing of cleaning brush, tea leaves are swept into the main flow field of air duct, effectively solve the tea leaves accumulation problem near suction port, ensure the continuity and efficiency of harvesting.

Description

Technical Field

[0001] This invention relates to the field of tea-picking machine technology, and in particular to a vacuum adsorption type tea-picking machine harvesting device. Background Technology

[0002] Tea harvesters, as highly efficient tea-harvesting machinery, play a vital role in large-scale tea cultivation. Existing tea harvesters are mainly divided into handheld and mobile types, with mobile tea harvesters being particularly favored due to their high operating efficiency and applicability to large tea gardens. These machines are typically equipped with horizontal reciprocating shearing blades and use a pneumatic system to blow the cut tea leaves into a conveyor duct, ultimately delivering them to a collection device to complete the harvest.

[0003] Chinese patent CN119586430B discloses a negative pressure tea-picking machine and a tea-picking method. The tea-picking machine sets an adsorption port at the lower end of the air duct and uses the air pressure difference between the air outlet and the adsorption port to form a local negative pressure, thereby quickly adsorbing the cut tea leaves into the air duct. Theoretically, this can effectively reduce the scattering and falling of tea leaves after cutting and improve the harvest rate.

[0004] However, in practical applications, especially in scenarios involving intensive tea harvesting, the existing negative pressure tea harvesting structure still has significant shortcomings.

[0005] After being adsorbed, tea leaves are very likely to accumulate in the area between the adsorption port and the air outlet. In particular, when there are baffles or guide structures in the air duct to adjust the wind angle, the tea leaves will collide with such components under the high-speed airflow, causing some tea leaves to remain near the adsorption port and unable to enter the main airflow channel in time.

[0006] The aforementioned localized accumulation not only hinders the normal adsorption of tea leaves and affects the continuity of harvesting, but in severe cases it may also block the adsorption area, causing a sharp drop in equipment efficiency and even requiring shutdown for cleaning. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a vacuum adsorption type tea harvesting device. This device can effectively prevent tea leaves from accumulating near the adsorption port and can precisely and evenly apply pesticide to the cut surfaces of pruned branches, thereby improving harvesting efficiency and pest and disease control.

[0008] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a vacuum adsorption type tea harvesting machine, comprising a frame, an air duct, a guide plate, a baffle, an air outlet disposed between the guide plate and the baffle, and a shearing blade.

[0009] The frame is slidably provided with a sliding plate that is adapted to the shape of the baffle. The baffle is provided with a plurality of first holes. The sliding plate is provided with a second hole that is connected to the first holes after sliding.

[0010] The frame is rotatably equipped with a cleaning brush that cooperates with the shearing blade, and the sliding plate is located on the side of the baffle facing the shearing blade;

[0011] After the sliding plate slides, the airflow is blown from the opening between the first and second holes to the shearing blade to sweep away the tea leaves remaining on it, and then brushed to the top of the air outlet by the cleaning brush.

[0012] In the above scheme, preferably, the cleaning brush includes a brush body and a rotating shaft, and the rotating shaft is provided with a swing arm;

[0013] The frame is rotatably equipped with a rotating arm that cooperates with the swing arm. One end of the rotating arm cooperates with the swing arm, and the other end is equipped with a pull rope connected to one end of the sliding plate.

[0014] In the above scheme, preferably, the sliding plate is provided with a return spring connected to the baffle; the two sides of the frame are provided with guide grooves that cooperate with the sliding plate.

[0015] In the above scheme, preferably, the frame is provided with a rope guide plate that cooperates with the rope, and a first spring is provided between the rotating arm and the guide plate.

[0016] In the above scheme, preferably, the swing arm is set in the same direction as the brush body extending direction;

[0017] The rotating arm is located on the side of the frame below the rotating shaft and close to the air duct.

[0018] In the above scheme, preferably, a liquid outlet box is provided below the shearing blade, the liquid outlet box includes a plurality of liquid outlet holes provided at the bottom, and the liquid outlet box is provided with absorbent cotton and a squeezing plate for squeezing the absorbent cotton.

[0019] In the above scheme, preferably, a squeezing rod that drives the squeezing plate is provided through the liquid outlet tank, and a squeezing groove that is adapted to the squeezing rod is provided on the tank wall;

[0020] The sliding plate is provided with a drive rod that drives the extrusion rod to slide along the extrusion groove.

[0021] In the above scheme, preferably, the liquid outlet tank is equipped with a liquid injection pump for injecting liquid into the absorbent cotton, and the liquid injection pump is connected to a plurality of evenly arranged liquid injection pipes; the frame is equipped with a button that cooperates with the rotating arm, and the button is electrically connected to the liquid injection pump.

[0022] In the above scheme, preferably, the liquid outlet tank is located behind the shearing blade, and its bottom length direction shape is adapted to the shearing blade;

[0023] The height of the liquid outlet tank is 5-20mm, and the tank body is made of wear-resistant engineering plastic.

[0024] In the above scheme, preferably, the rotating shaft is connected to the reduction motor, the cleaning brushes are symmetrically arranged on both sides of the air duct, and the cleaning brushes on both sides are connected by a coupling.

[0025] The beneficial effects of this invention are: by combining the sliding plate and the baffle, an airflow channel is formed at a specific time to point towards the shearing blade, which can actively blow away the tea leaves remaining on the blade. Combined with the swinging of the cleaning brush, the tea leaves are swept into the main flow field of the air duct, which effectively solves the problem of tea leaf accumulation near the adsorption port and ensures the continuity and efficiency of harvesting.

[0026] Meanwhile, by setting up a liquid outlet box linked to the sliding plate, and using the squeezing of the liquid-absorbing cotton, the liquid is applied precisely and quantitatively to the branch cut only after the shearing action, which greatly reduces the waste of liquid and significantly improves the effect of pest and disease control. In addition, this device integrates and controls multiple functions such as blowing, cleaning and applying pesticides, thereby achieving a high degree of automation and significantly improving the reliability, economy and overall efficiency of the equipment. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0028] Figure 2 This is a front view structural diagram of the present invention.

[0029] Figure 3 This is a three-dimensional structural diagram of the connection between the geared motor and the shaft of the present invention.

[0030] Figure 4 For the present invention Figure 2 Schematic diagram of the cross-sectional structure at point BB.

[0031] Figure 5 This is a three-dimensional structural diagram of the baffle of the present invention.

[0032] Figure 6 This is an exploded view of the baffle and sliding plate of the present invention.

[0033] Figure 7 For the present invention Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0034] Figure 8 For the present invention Figure 4 A magnified schematic diagram of the structure at point B in the middle.

[0035] Figure 9 This is a schematic diagram of the cooperation structure between the sliding plate and the squeezing rod on the liquid outlet tank of the present invention. Detailed Implementation

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments: See also Figures 1-9 .

[0037] A vacuum adsorption type tea harvesting device mainly includes a frame 11, an air duct 1, a guide plate 2, a baffle 3, an air outlet 4, and a shearing blade 5.

[0038] like Figure 4 As shown, the guide plate 2 and the baffle 3 are set on both sides of the air outlet 4 at the bottom of the air duct 1. The air outlet 4 is connected to the fan and is used to blow air into the air duct through the air outlet 4 and form a negative pressure suction port on the side of the air outlet 4 near the shearing blade 5 to absorb the sheared tea leaves. The air duct 1 is inclined on the frame 11. The air outlet 4 blows out high-speed air through the fan and blows into the air duct 1 along the baffle 3. At the same time, an suction port is formed at its lower end near the shearing blade 5, so that the tea leaves cut by the shearing blade 5 enter the wind conveying channel formed by the air outlet 4 and the guide plate 2 through the suction port.

[0039] Shearing blade 5 is an arc-shaped blade, such as... Figure 2 As shown, the baffle 3 is arc-shaped and adapted to the shearing blade 5, and a sliding plate 6 is slidably disposed on the side of the baffle 3 facing the shearing blade 5, which is in contact with the baffle 3; specifically, the baffle 3 has a plurality of equidistantly arranged first holes 301, such as Figure 6 As shown, the sliding plate 6 has a corresponding second hole 601. Initially, the first hole 301 on the baffle 3 and the second hole 601 on the sliding plate 6 are staggered to form an airtight baffle assembly. At this time, all the air blown out of the air outlet 4 is blown into the air duct 1. When the sliding plate 6 slides laterally relative to the baffle 3, that is, along... Figure 5 Slide one hole to the left in the direction shown, so that the second hole 601 coincides with the first hole 301, forming a through hole. At this time, part of the airflow blown out of the air outlet 4 can be blown to the upper surface of the shearing tool 5 through the through hole, and blow away the tea leaves accumulated on its upper surface or stuck on the tool teeth.

[0040] To prevent tea leaves from being blown out of the harvesting device, in this embodiment, a cleaning brush 501 is installed on the frame 11 via a rotating shaft 503. The cleaning brush 501 is symmetrically installed on both sides of the frame 11, and the cleaning brush 501 can cover more than 90% of the transverse area of ​​the shearing blade 5. Figure 2 As shown, the rotating shafts 503 on both sides are connected by couplings 8 to achieve synchronous rotation.

[0041] The brush body 502 of the cleaning brush 501 can brush the surface of the shearing blade 5. In this embodiment, Figure 2 The cleaning brush 501 on the left side is shown with one end of its rotating shaft 503 connected to the reduction motor 9. A swing arm 504 is fixed on the rotating shaft 503. Figure 7 As shown, a rotating arm 505 is also hinged to the frame 11. The upper end of the rotating arm 505 contacts the swing arm 504, and the other end is connected to one end of the sliding plate 6 through a pull rope 506. Thus, when the rotating arm 505 swings, it realizes the lateral driving and sliding of the sliding plate 6. A return spring 602 is connected to the sliding plate 6. Guide grooves 111 are opened on both sides of the frame 11 to guide and reset the lateral sliding of the sliding plate 6.

[0042] The frame 11 is provided with a pull rope guide plate 112 that cooperates with the pull rope 506. A first spring 113 is provided between the rotating arm 505 and the pull rope guide plate 112. The first spring 113 is a tension spring, so that after the rotating arm 505 swings a certain angle and disengages from the swing arm 504, the rotating arm 505 can be reset. The swing arm 504 is set in the same direction as the extension direction of the brush body 502. The rotating arm 505 is located on the side of the frame 11 below the rotating shaft 503 and close to the air duct 1. Figure 7 As shown, when the swing arm 504 rotates counterclockwise to the position shown in the figure, the right side wall of the swing arm 504 contacts the left side wall of the rotating arm 505. At this time, the end of the brush body 502 of the cleaning brush 501 is initially placed on the upper surface of the shearing blade 5. Then, the swing arm 504 continues to rotate and squeezes the rotating arm 505 to swing clockwise, so that the lower end of the rotating arm 505 pulls the pull rope 506 and drives the sliding plate 6 to slide. At this time, the first hole 301 and the second hole 601 gradually overlap and blow out the airflow at the overlapping part to sweep the tea leaves accumulated on the upper surface of the shearing blade 5. After being swept, the tea leaves are blocked by the cleaning brush 501 rotating counterclockwise towards the air duct 1, and are thus brushed into the air duct 1 for collection.

[0043] In this embodiment, a liquid outlet tank 7 is provided below and behind the shearing blade 5, such as... Figure 8 As shown. The bottom surface of the liquid outlet tank 7 has multiple densely packed liquid outlet holes. The inside of the liquid outlet tank 7 is filled with absorbent cotton 701, and a squeezing plate 702 that can move up and down is provided on the upper surface of the absorbent cotton 701. When the squeezing plate 702 slides down to squeeze the absorbent cotton 701, the liquid inside can be discharged from the liquid outlet holes and suspended on the lower surface of the liquid outlet tank 7.

[0044] To achieve the extrusion of the extrusion plate 702, multiple extrusion rods 703 are installed through the wall of the liquid outlet tank 7. The rod body portion inside the liquid outlet tank 7 is connected to the extrusion plate 702, and the end portion outside the liquid outlet tank 7 cooperates with the drive rod 705 on the sliding plate 6. The wall of the liquid outlet tank 7 has extrusion grooves 704 that match the movement trajectory of the extrusion rods 703, such as... Figure 9As shown, when the sliding plate 6 is pulled to the left by the pull rope 506, the drive rod 705 drives the squeezing rod 703 to slide to the left, and the squeezing rod 703 drives the squeezing plate 702 to slide downward under the guidance of the squeezing groove 704, thereby squeezing the absorbent cotton 701 and squeezing out the liquid.

[0045] The squeezing groove 704 is inclined downwards from top to bottom towards the driving direction of the sliding plate 6; the absorbent cotton 701 can be made of sponge and has a certain elastic restoring ability, thereby realizing the function of repeatedly absorbing water and squeezing out water. In addition, the liquid outlet tank 7 is connected to an injection pump (not shown in the figure), which replenishes the medicine to the absorbent cotton 701 through an injection pipe. A button 114 is installed on the frame 11. The button 114 corresponds to the position of the rotating arm 505 and is electrically connected to the injection pump. When the rotating arm 505 rotates once, the button 114 is triggered once, so that the injection pump injects liquid into the absorbent cotton 701 once, realizing the function of quantitative and timed liquid replenishment.

[0046] The bottom length of the liquid outlet tank 7 is adapted to the shape of the shearing blade 5; the height of the liquid outlet tank 7 is 5-20mm, and the tank body is made of wear-resistant engineering plastic, thereby improving the wear resistance of the bottom of the liquid outlet tank 7 and the end of the pruned tea tree branches and extending its service life.

[0047] The method of using a vacuum adsorption type tea harvesting machine as described above:

[0048] In the initial state, the second hole 601 on the sliding plate 6 and the first hole 301 on the baffle 3 are staggered, the baffle assembly is in a closed state, and all the airflow blown out of the air outlet 4 enters the air duct 1 to transport tea leaves.

[0049] The workflow begins with the shearing blade 5 cutting the tea leaves. The cut tea leaves are then sucked into the air duct 1 under the negative pressure formed at the suction port. At the same time, the cleaning brush 501, driven by the geared motor 9, begins to rotate counterclockwise.

[0050] When the swing arm 504 on the rotating shaft 503 of the cleaning brush 501 rotates to contact the rotating arm 505, the continued rotation will push the rotating arm 505 to swing clockwise around its hinge point. The swing of the rotating arm 505 overcomes the elastic force of the return spring 602 through the pull rope 506, and pulls the sliding plate 6 to slide laterally.

[0051] Subsequently, the second hole 601 on it gradually aligns with the first hole 301 on the baffle 3 to form a through channel, causing some of the airflow to change direction and blow towards the surface of the shearing blade 5 through these channels, thus directionally blowing away any remaining or accumulated tea leaves.

[0052] At the same time, the drive rod 705 on the sliding plate 6 moves accordingly, pushing the extrusion rod 703 to move along the inclined extrusion groove 704, forcing the extrusion rod 703 to drive the extrusion plate 702 to extrude the absorbent cotton 701 in the liquid tank 7 downward.

[0053] The tea leaves blown away fly towards the air duct 1 under the action of the airflow. At this time, the brush body 502 of the rotating cleaning brush 501 moves just above the blade, effectively blocking and sweeping these tea leaves into the air duct 1, completing the cleaning and recycling.

[0054] At the same time, under the action of the squeezing plate 702, the liquid medicine stored in the absorbent cotton 701 is squeezed out evenly, seeps out through the liquid outlet hole at the bottom of the liquid outlet box 7, and is applied to the cut of the freshly pruned tree branch, thus achieving precise application of medicine.

[0055] When the sliding plate 6 is pulled to its limit position, as the swing arm 504 of the cleaning brush 501 continues to rotate, it disengages from the rotating arm 505. The rotating arm 505 resets under the tension of the first spring 113, and the pull rope 506 is released. The sliding plate 6 then slides back to its original position under the action of the reset spring 602. The drive rod 705 disengages from the squeezing rod 703, and the squeezing plate 702 rises under the elastic restoring force of the absorbent cotton 701, stopping the application of medicine. At the same time as the sliding plate 6 resets, the second hole 601 and the first hole 301 are misaligned again, shutting off the auxiliary airflow blowing towards the blade.

[0056] During the resetting process of the rotating arm 505, it will trigger button 114 to start the injection pump, and quantitatively replenish the drug solution to the absorbent cotton 701 in the liquid outlet tank 7 through the injection pipe, in preparation for the next application of the drug after shearing.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vacuum adsorption type tea-harvesting device, characterized in that: Includes frame (11), air duct (1), guide plate (2), baffle (3), air outlet (4) located between guide plate (2) and baffle (3) and shearing blade (5); The frame (11) is slidably provided with a sliding plate (6) that is adapted to the shape of the baffle (3). The baffle (3) is provided with a plurality of first holes (301). The sliding plate (6) is provided with a second hole (601) that is slidably connected to the first holes (301). The frame (11) is rotatably equipped with a cleaning brush (501) that cooperates with the shearing blade (5), and the sliding plate (6) is located on the side of the baffle (3) facing the shearing blade (5). After the sliding plate (6) slides, the airflow is blown from the first hole (301) and the second hole (601) through the air outlet (4) to the shearing blade (5) to blow away the tea leaves remaining on it, and then brushed to the air outlet (4) above it by the cleaning brush (501). The cleaning brush (501) includes a brush body (502) and a rotating shaft (503), and a swing arm (504) is provided on the rotating shaft (503). The frame (11) is rotatably provided with a rotating arm (505) that cooperates with the swing arm (504). One end of the rotating arm (505) cooperates with the swing arm (504), and the other end is provided with a pull rope (506) connected to one end of the sliding plate (6).

2. The vacuum adsorption type tea harvesting device according to claim 1, characterized in that: The sliding plate (6) is provided with a return spring (602) connected to the baffle (3); the frame (11) is provided with guide grooves (111) on both sides that cooperate with the sliding plate (6).

3. The vacuum adsorption type tea harvesting device according to claim 1, characterized in that: The frame (11) is provided with a rope guide plate (112) that cooperates with the rope (506), and a first spring (113) is provided between the rotating arm (505) and the rope guide plate (112).

4. The vacuum adsorption type tea harvesting device according to claim 1, characterized in that: The swing arm (504) is positioned in the same direction as the extension direction of the brush body (502); The rotating arm (505) is located on the side of the frame (11) below the rotating shaft (503) and close to the air duct (1).

5. The vacuum adsorption type tea harvesting device according to claim 1, characterized in that: Below the shearing blade (5) is a liquid outlet box (7), which includes several liquid outlet holes at the bottom. The liquid outlet box (7) contains absorbent cotton (701) and a squeezing plate (702) for squeezing the absorbent cotton (701).

6. The vacuum adsorption type tea harvesting device according to claim 5, characterized in that: The liquid outlet tank (7) is provided with a squeezing rod (703) through which the driving squeezing plate (702) passes. The liquid outlet tank (7) has a squeezing groove (704) on its body wall that is compatible with the squeezing rod (703). The sliding plate (6) is provided with a drive rod (705) that drives the extrusion rod (703) to slide along the extrusion groove (704).

7. The vacuum adsorption type tea harvesting device according to claim 5, characterized in that: The liquid outlet tank (7) is equipped with a liquid injection pump for injecting liquid into the absorbent cotton (701), and the liquid injection pump is connected to a number of evenly arranged liquid injection pipes; the frame (11) is equipped with a button (114) that cooperates with the rotating arm (505), and the button (114) is electrically connected to the liquid injection pump.

8. The vacuum adsorption type tea harvesting device according to claim 5, characterized in that: The liquid outlet box (7) is located behind the shearing blade (5), and its bottom length direction shape is adapted to the shearing blade (5); The height of the liquid outlet tank (7) is 5-20mm, and the tank body is made of wear-resistant engineering plastic.

9. The vacuum adsorption type tea harvesting device according to claim 1, characterized in that: The rotating shaft (503) is connected to the geared motor (9), and the cleaning brushes (501) are symmetrically arranged on both sides of the air duct (1). The cleaning brushes (501) on both sides are connected by a coupling (8).

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