Multifunctional tea-leaf picker

Abstract

The invention discloses a multifunctional tea-leaf picker which comprises a vehicle body, a cutter arranged at the front end of the vehicle body in the advancing direction and a covering unit arranged at the rear end of the vehicle body in the advancing direction. The covering unit comprises a frame body, a net roll and a laying unit which is arranged on the frame body and used for flattening a net towards the two sides. The laying unit comprises a telescopic pipe and laying pipes arranged on the two sides of the telescopic pipe, an adsorption pipe is arranged on the telescopic pipe, the laying pipes are arranged on the adsorption pipe, and the diameter of the adsorption pipe is smaller than that of the telescopic pipe; an air inlet pipe is arranged in the middle of the telescopic pipe; a spiral shaft for driving the laying pipe to slide towards the two sides is arranged on the frame body, a driving plate matched with the spiral shaft is arranged on the laying pipe, and any end of the spiral shaft is connected with a driving motor; the net surface is automatically paved through the synergistic effect of airflow adsorption and mechanical slippage, and the net surface is lubricated and moisture is kept in combination with a spraying system, so that netting flattening and automation are realized.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a multi-functional tea picker. Background Art

[0002] At present, tea pickers have been widely used in tea picking operations. To improve the efficiency of tea garden management, some tea pickers are equipped with a net covering mechanism, which can synchronously cover the sunshade net on the surface of tea trees after picking to achieve functions such as wind prevention, insect prevention, and sunshade. However, the existing net covering technology has significant defects in practical applications: Since the material of the protective net is generally soft and light, during the net covering process, the net body is easily affected by factors such as wind force, the irregular shape of the tea tree canopy, or the inertia of mechanical movement, resulting in problems such as wrinkles or local accumulation on the net surface after covering, and it is difficult to directly lay flat on the surface of tea trees; To solve the above problems, the existing technology usually relies on manual intervention, that is, the operator needs to manually pull and adjust the position of the net body after net covering to ensure its flat covering. This method greatly reduces the operation efficiency and increases the labor force and labor cost. Summary of the Invention

[0003] In view of the deficiencies in the prior art, the present invention provides a multi-functional tea picker, which automatically spreads the net surface through the synergistic action of air flow adsorption and mechanical sliding, combines a spray system to lubricate the net surface and maintain moisture, and realizes the flattening and automation of net covering.

[0004] To solve the above technical problems, the present invention is solved by the following technical solutions: A multi-functional tea picker includes a vehicle body, a cutter provided at the front end in the traveling direction of the vehicle body, and a covering unit provided at the rear end in the traveling direction of the vehicle body; The covering unit includes a frame, a net roll, and a laying unit provided on the frame for spreading the net to both sides; The laying unit includes a telescopic tube and laying tubes provided on both sides of the telescopic tube. An adsorption tube is provided on the telescopic tube, the laying tubes are provided on the adsorption tube, and the diameter of the adsorption tube is smaller than that of the telescopic tube; An air inlet pipe is provided in the middle of the telescopic tube; A spiral shaft for driving the laying tubes to slide to both sides is provided on the frame. A driving plate matching with the spiral shaft is provided on the laying tube, and a driving motor is connected to any one end of the spiral shaft.

[0005] In the above solution, preferably, the telescopic tube includes a first telescopic section connected to the air inlet pipe in the middle and second telescopic sections symmetrically provided on both sides of the first telescopic section. Both ends of the adsorption tube are respectively connected to the first telescopic section and the second telescopic section.

[0006] In the above solution, preferably, side panels cooperating with the telescopic tube are symmetrically provided on both sides of the frame, and ventilation holes communicating with the telescopic tube are provided on the side panels.

[0007] In the above scheme, preferably, both ends of the screw shaft are slidably arranged on the side plates, and the side plates are provided with a first sliding groove matching with the screw shaft.

[0008] In the above scheme, preferably, a rotating plate is rotatably provided on the ventilation hole, the driving motor is arranged on the rotating plate on any side, a driving push rod is provided on the frame, one end of the driving push rod is rotatably provided on the frame, and the other end is connected to the swing arm on the rotating plate through a pin shaft.

[0009] In the above scheme, preferably, the rotating plate is provided with a through hole matching with the ventilation hole, the ventilation hole is provided with a plurality of first ribs, the through hole is provided with a second rib matching with the first ribs, and a telescopic membrane is provided between the first ribs and the second ribs.

[0010] In the above scheme, preferably, a spray pipe is provided on the air inlet pipe, the spray pipe is connected to a spray pump, and the spray pump is connected to a water tank.

[0011] In the above solution, preferably, a guide rod is provided on the driving plate, and a second sliding groove matching with the guide rod is provided on the side plate.

[0012] In the above scheme, preferably, the spiral shaft is a bidirectional spiral shaft, and the driving plate is provided with a guide pin adapted to the spiral groove on the spiral shaft; the spiral shaft is provided with a reversing groove that enables the driving plate to slide in the opposite direction and is through-connected with the spiral groove.

[0013] In the above scheme, preferably, a controller is included, and the controller is connected to the drive motor, the drive push rod and the spray pump to realize automatic control thereof; The side plate is provided with a driving switch matched with the driving plate, and the driving switch is connected to the controller.

[0014] The beneficial effects of the present invention are: 1. The mesh surface is adsorbed by the laying pipe and driven by the spiral shaft to slide, so that the mesh surface can be automatically spread from the middle to both sides without manual adjustment, thus realizing the automatic spreading of the mesh surface; 2. Spray synergistic lubrication: Spray water to lubricate the mesh surface when the laying pipe is reset to reduce friction resistance. At the same time, water is retained on the mesh surface, which is beneficial to the growth of tea trees; 3. Adaptive airflow adjustment: The linkage design of the ventilation hole and the rotating plate can realize the switching between the adsorption and injection states of the laying pipe, realizing the functions of adsorption during paving and injection during resetting; 4. Intelligent Control: The controller coordinates the driving, spraying, and reversing operations to achieve full-process automation, significantly improving the working efficiency of the tea picker. Description of the Drawings

[0015] Figure 1 This is the front view structural schematic diagram of the present invention.

[0016] Figure 2 This is the three-dimensional structural schematic diagram of the covering unit of the present invention.

[0017] Figure 3 This is the sectional structural schematic diagram of the covering unit of the present invention.

[0018] Figure 4 This is the exploded three-dimensional view at the driving motor of the present invention.

[0019] Figure 5 This is the three-dimensional structural schematic diagram of the driving board and the laying pipe of the present invention.

[0020] Figure 6 This is the three-dimensional structural schematic diagram of the telescopic pipe of the present invention. Detailed Description of the Invention

[0021] The following further describes the present invention in detail in conjunction with the drawings and the specific embodiments: Refer to Figures 1-6 .

[0022] A multi-functional tea picker includes a vehicle body 1, a cutter 2 provided at the front end in the traveling direction of the vehicle body 1, and a covering unit 3 provided at the rear end in the traveling direction of the vehicle body 1. The vehicle body 1 includes a frame and a crawler chassis, and the frame is provided on the crawler chassis, and the movement of the frame is realized by the walking of the crawler chassis.

[0023] The frame is a gantry frame, and the cutter 2 is provided in the middle of the frame. When the vehicle body 1 is traveling, the surface of the tea leaves is sheared by the cutter 2; a wind duct is provided on the frame, one end of the wind duct is connected to the cutter 2, and the other end extends upward and is connected to a collection box. A blower for providing conveying wind power for the wind duct is provided on the frame. After the cutter 2 shears the tea leaves, the tea leaves are blown into the wind duct by the blower and are conveyed to the collection box through the wind duct for collection, realizing the harvesting of the tea leaves.

[0024] The cutter 2 is located at the front end in the traveling direction of the vehicle body 1, and the covering unit 3 is provided at the rear end in the traveling direction of the vehicle body 1, that is, after the surface of the tea tree is sheared by the cutter 2, the surface of the tea tree is covered with a net by the covering unit 3, such as Figure 1 shown.

[0025] The covering unit 3 includes a frame body 301, a net roll 302, and a laying unit 4 provided on the frame body 301 for flattening both sides of the net cage. Specifically, the net roll 302 is connected to a motor, and the net is laid on the tea tree surface by the rotation of the motor. The laying unit 4 is provided on the side of the net roll 302 away from the traveling direction of the vehicle body 1. When the net is spread by the motor, the laying unit 4 can spread the net from the center to both sides, so that the net is laid flat on the tea tree surface as a whole.

[0026] As Figures 2-4 shown, the laying unit 4 includes a telescopic tube 401 and laying tubes 402 provided on both sides of the telescopic tube 401. Specifically, side plates 5 are symmetrically arranged on both sides of the frame body 301. Both ends of the telescopic tube 401 are fixed on the side plates 5, and ventilation holes 501 communicating with the inner hole of the telescopic tube 401 are provided on the side plates 5; the telescopic tube 401 includes a first telescopic section 406 in the middle and second telescopic sections 407 symmetrically arranged at both ends. The first telescopic section 406 and the second telescopic sections 407 are connected by an adsorption tube 403, and the diameter of the adsorption tube 403 is smaller than the diameter of the telescopic tube 401, and the cross-sectional diameter of the telescopic tube 401 during elongation and compression is larger than the diameter of the adsorption tube 403.

[0027] The laying tubes 402 are provided on the adsorption tube 403. An air inlet pipe 404 is arranged in the middle of the telescopic tube 401, that is, the air inlet pipe 404 is arranged on the first telescopic section 406 and communicates with the inner cavity of the telescopic tube 401. The air inlet pipe 404 is connected to a blower, that is, the blower conveys wind power through the air inlet pipe 404 into the first telescopic section 406 of the telescopic tube 401 and discharges it outward through the ventilation holes 501 on the side plates 5 through the second telescopic sections 407 on both sides.

[0028] The laying tubes 402 are rotatably arranged on the adsorption tube 403, and the tube holes of the laying tubes 402 are always communicated with the inner cavity of the adsorption tube 403. When the wind power enters the telescopic tube 401 through the air inlet pipe 404 and forms a high-speed air flow in the telescopic tube 401, at this time, when the air flow passes through the adsorption tube 403, due to the reduction of the cross-section, a negative pressure suction force is formed at the laying tubes 402, so that an adsorption force is formed at the pipe orifice of the laying tubes 402 to adsorb the net surface. The pipe orifice of the laying tubes 402 is provided with a conical adsorption port and is made of smooth rubber. In its initial state (when the laying tubes 402 are in the Figures 2-3 shown state), the pipe orifice is close to the net surface and perpendicular or nearly perpendicular to the net surface.

[0029] On the frame body 301, a spiral shaft 303 for driving the laying tubes 402 to slide to both sides is provided. The spiral shafts 303 are symmetrically arranged and are fixed into one body by a connecting shaft in the middle. As Figure 2As shown, a driving plate 405 that cooperates with the spiral shaft 303 is provided on the laying pipe 402. Specifically, the spiral shaft 303 is a bidirectional spiral shaft, and a sliding hole that cooperates with the spiral shaft 303 is provided on the driving plate 405; spiral grooves 8 that cross and spiral are provided on the spiral shaft 303, which is the prior art of a bidirectional spiral shaft and will not be elaborated here; a guiding pin 801 that cooperates with the spiral groove 8 and is snapped into the groove is provided on the driving plate 405; reversing grooves 802 are provided at both ends of the spiral shaft 303. After the spiral shaft 303 rotates, the driving plate 405 can slide along the axis of the spiral shaft 303 towards one end. When it slides into the reversing groove 802, the guiding pin 801 slides into the reverse spiral groove, causing the driving plate 405 to slide in the reverse direction. In addition, the prior art of driving by a bidirectional spiral shaft will not be elaborated here.

[0030] A driving motor 304 is connected to any one end of the spiral shaft 303. The driving motor 304 can be a servo motor. As can be seen above, after the driving motor 304 drives the spiral shaft 303 to rotate, the driving plate 405 can be driven to slide reciprocally along the axis of the spiral shaft 303. Further, the driving plate 405 drives the laying pipe 402 to slide reciprocally along the axis, and the laying pipe 402 is translated to pave the mesh surface through the telescopic function of the telescopic pipe 401.

[0031] In order to make the driving plate 405 disengage from the mesh surface when sliding to the side close to the side plate 5 and not adsorb the mesh surface during reset, in this embodiment, a mechanism that can rotate the laying pipe 402 is provided. Specifically, both ends of the spiral shaft 303 are slidably arranged on the side plate 5, and a first sliding groove 502 that cooperates with the spiral shaft 303 is provided on the side plate 5. The first sliding groove 502 is a circular arc groove body that is concentric with the telescopic pipe 401, that is, when the spiral shaft 303 slides along the first sliding groove 502, it is a circular motion around the telescopic pipe 401.

[0032] A rotating plate 503 is rotatably arranged on the ventilation hole 501. The driving motor 304 is arranged on the rotating plate 503 on any one side, and the rotating plate 503 is rotatably connected to the middle bracket of the ventilation hole 501. A driving push rod 6 is provided on the frame body 301. One side of the rotating plate 503 is provided with a motor mounting plate that cooperates with the driving motor 304, and the other side is provided with a swing arm 504. The rod seat end of the driving push rod 6 is rotatably arranged on the frame body 301 through a pin shaft, as Figure 2 shown, the other end is connected to the swing arm 504 on the rotating plate 503 through a pin shaft. Through the drive of the driving push rod 6, the rotating plate 503 rotates. At the same time, after the rotating plate 503 rotates, it drives the spiral shaft 303 to slide along the first sliding groove 502. When the spiral shaft 303 slides, the driving plate 405 rotates around the center of the adsorption pipe 403, so as to adjust the angle of the nozzle of the laying pipe 402.

[0033] A rotating hole is provided on the driving plate 503. The laying pipe 402 is perpendicular to the rotating hole in terms of spatial axis, and the driving plate 503 is rotationally connected to the pipe wall of the adsorption pipe 403 through the rotating hole, so as to realize the rotational connection between the laying pipe 402 and the adsorption pipe 403. At the same time, the pipe hole of the adsorption pipe 403 is communicated with the pipe hole of the laying pipe 402.

[0034] In order to enable the driving plate 405 to rotate around the adsorption pipe 403 while guiding and sliding, in this embodiment, a guiding rod 7 is provided on the driving plate 405. The driving plate 405 is slidably arranged on the guiding rod 7, and both ends of the guiding rod 7 are arranged through the side plate 5. A second sliding groove 701 is provided on the side plate 5, and the second sliding groove 701 is also an arc groove concentric with the telescopic pipe 401. That is, after the driving plate 405 rotates, the guiding rod 7 slides along the second sliding groove 701.

[0035] A through hole 505 matching with the ventilation hole 501 is provided on the rotating plate 503. A plurality of first ribs 506 are provided on the ventilation hole 501, and second ribs 507 matching with the first ribs 506 are provided on the through hole 505. Initially, the first ribs 506 and the second ribs 507 are in contact and abutting state. At this time, the wind discharged from the telescopic pipe 401 can be discharged through the gaps between the ribs, as Figure 2 shown in the state. At this time, the pipe orifice of the laying pipe 402 is in an adsorption state due to the cross-sectional changes of the adsorption pipe 403 and the telescopic pipe 401.

[0036] A telescopic film is provided between the first ribs 506 and the second ribs 507; in the initial state, the telescopic film is in a folded state. When the driving push rod 6 drives the rotating plate 503 to rotate a certain angle, the telescopic film between the first ribs 506 and the second ribs 507 unfolds, blocking the ventilation hole 501. At this time, the wind force introduced into the telescopic pipe 401 can only be discharged through the laying pipe 402, so that the laying pipe 402 realizes a blowing effect.

[0037] A spray pipe is provided on the air inlet pipe 404. The spray pipe is connected with a spray pump, and the spray pump is connected with a water tank. Whether the spray pipe sprays is controlled by the spray pump. That is, when the laying pipe 402 adsorbs, the spray pump stops working. When the laying pipe 402 is in a blowing state, the spray pump works to spray atomized water droplets into the air inlet pipe 404. The water droplets are discharged into the telescopic pipe 401 through the air inlet pipe 404 and then spray atomized particles at the laying pipe 402, so as to moisten and lubricate the mesh surface.

[0038] A controller is provided on the tea picking machine. The controller is connected to the drive motor 304, the drive push rod 6, and the spray pump to achieve their automatic control. A drive switch 9 that cooperates with the drive plate 405 is provided on the side plate 5. A reset switch that cooperates with the drive plate 405 can also be provided on the connecting shaft. Both the drive switch 9 and the reset switch are connected to the controller to identify the position state of the drive plate 405. The controller can be controlled by a single-chip microcomputer or a PLC controller to improve the intelligence of the whole machine.

[0039] The working process of a multifunctional tea picking machine: S1: System startup and net covering preparation Start the equipment: The tea picking machine body 1 moves forward, the cutter 2 picks tea leaves, and at the same time, the covering unit 3 unfolds synchronously; Net roll release: The net roll 302 releases the protective net, and the net body is initially covered on the surface of the tea tree; Airflow generation: The fan connected to the air inlet pipe 404 starts, and the airflow enters the inside of the telescopic pipe 401; S2: Adsorption and spreading Negative pressure adsorption: When the airflow passes through the adsorption pipe 403 with a smaller diameter, the flow rate increases and the pressure decreases, forming a negative pressure to adsorb the net surface. And the main airflow is discharged through the ventilation holes, so that the net body is suspended or in contact with the surface of the laying pipe 402; Mechanical spreading: The drive motor 304 drives the bidirectional spiral shaft 303 to rotate. The spiral groove 8 cooperates with the guide pin 801 of the drive plate 405 to push the laying pipe 402 to slide to both sides; Net surface unfolding: When the laying pipe 402 slides, the adsorbed net surface is evenly pulled to both sides, eliminating wrinkles and laying flat on the surface of the tea tree; S3: Spray lubrication and moisture retention Reset spray: When the laying pipe 402 slides to the end and needs to be reset, the controller triggers the spray pump to start, and the atomized water droplets enter the air inlet pipe 404 through the spray pipe; The drive push rod 6 adjusts the angle of the rotating plate 503 through the swing arm 504, so that the telescopic film covers the ventilation holes. At this time, the airflow in the telescopic pipe 401 can only be discharged through the laying pipe 402; After the laying pipe 402 rotates a certain angle driven by the rotating plate 503, the pipe orifice rotates to the unlaid net surface, and the atomized particles are sprayed onto the unlaid net surface through the laying pipe 402; Lubrication effect: After the laying pipe 402 slides to the end, it slides in the reverse direction through the switching of the bidirectional spiral groove, that is, during the reverse sliding process of the laying pipe 402, it disengages from the net surface and wets the unlaid net surface; Moisture retention effect: The moisture retained on the net surface after spreading penetrates to the surface of the tea tree, promoting the optimization of the growth environment. At the same time, the atomized particles retained on the net surface reduce the friction between the laying pipe 402 and the net surface during subsequent spreading, facilitating spreading; S4: Loop control Reciprocating cycle: The spiral shaft 303 rotates continuously to achieve the reciprocating motion of the laying pipe 402, which is synchronized with the release speed of the mesh roll 302 to ensure continuous mesh covering.

[0040] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements 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 multifunctional tea picking machine, characterized in that: It comprises a vehicle body (1), a cutting tool (2) arranged at the front end of the vehicle body (1) in the direction of travel, and a covering unit (3) arranged at the rear end of the vehicle body (1) in the direction of travel; The covering unit (3) comprises a frame (301), a net roll (302), and a laying unit (4) arranged on the frame (301) and used for spreading the net to both sides; The laying unit (4) comprises a telescopic tube (401) and laying tubes (402) arranged on both sides of the telescopic tube (401); an adsorption tube (403) is arranged on the telescopic tube (401); the laying tube (402) is arranged on the adsorption tube (403); and the diameter of the adsorption tube (403) is smaller than the diameter of the telescopic tube (401); An air inlet pipe (404) is provided in the middle of the telescopic tube (401); The frame (301) is provided with a screw shaft (303) for driving the laying pipe (402) to slide to both sides, the laying pipe (402) is provided with a driving plate (405) matched with the screw shaft (303), and either end of the screw shaft (303) is connected to a driving motor (304).

2. A multifunctional tea picking machine according to claim 1, characterized in that: The telescopic tube (401) comprises a first telescopic section (406) arranged in the middle and connected to the air inlet pipe (404), and second telescopic sections (407) symmetrically arranged on both sides of the first telescopic section (406), and two ends of the adsorption tube (403) are respectively connected to the first telescopic section (406) and the second telescopic section (407).

3. A multifunctional tea picking machine according to claim 1, characterized in that: Side panels (5) matching the telescopic tube (401) are symmetrically arranged on both sides of the frame (301), and ventilation holes (501) intersecting the telescopic tube (401) are arranged on the side panels (5).

4. A multifunctional tea picking machine according to claim 1, characterized in that: The two ends of the screw shaft (303) are slidably mounted on the side plate (5), and the side plate (5) is provided with a first sliding groove (502) matching with the screw shaft (303).

5. A multifunctional tea picking machine according to claim 3, characterized in that: A rotating plate (503) is rotatably provided on the ventilation hole (501), the driving motor (304) is provided on the rotating plate (503) on either side, a driving push rod (6) is provided on the frame (301), one end of the driving push rod (6) is rotatably provided on the frame (301), and the other end is connected to a swing arm (504) on the rotating plate (503) via a pin shaft.

6. A multifunctional tea picking machine according to claim 5, characterized in that: The rotating plate (503) is provided with a through hole (505) matching with the ventilation hole (501), the ventilation hole (501) is provided with a plurality of first ribs (506), the through hole (505) is provided with a second rib (507) matching with the first rib (506), and a telescopic membrane is provided between the first rib (506) and the second rib (507).

7. A multifunctional tea picking machine according to claim 6, characterized in that: The air inlet pipe (404) is provided with a spray pipe, the spray pipe is connected to a spray pump, and the spray pump is connected to a water tank.

8. The multifunctional tea picking machine according to claim 1, characterized in that: The driving plate (405) is provided with a guide rod (7), and the side plate (5) is provided with a second sliding groove (701) that matches the guide rod (7).

9. A multifunctional tea picking machine according to claim 1, characterized in that: The screw shaft (303) is a bidirectional screw shaft. The driving plate (405) is provided with a guide pin (801) adapted to the screw groove (8) on the screw shaft (303). The screw shaft (303) is provided with a reversing groove (802) that enables the driving plate (405) to slide in the opposite direction and is connected to the screw groove (8).

10. The multifunctional tea picking machine according to claim 1, characterized in that: It comprises a controller, wherein the controller is connected to a driving motor (304), a driving push rod (6) and a spray pump to realize automatic control thereof; The side plate (5) is provided with a driving switch (9) that matches the driving plate (405), and the driving switch (9) is connected to the controller.

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