Multi-functional tea picking machine

Abstract

The application discloses a multifunctional tea picking machine, 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 arranged on the frame body and used for laying the net to the two sides; the laying unit comprises an extension pipe and laying pipes arranged on the two sides of the extension pipe; an adsorption pipe is arranged on the extension pipe; the laying pipes are arranged on the adsorption pipe; the diameter of the adsorption pipe is smaller than that of the extension pipe; an air inlet pipe is arranged in the middle of the extension pipe; a screw shaft is arranged on the frame body and used for driving the laying pipes to slide to the two sides; a driving plate matched with the screw shaft is arranged on the laying pipes; and a driving motor is connected to any one end of the screw shaft; the net surface is automatically laid by the cooperation of air flow adsorption and mechanical sliding; the spraying system is combined to lubricate the net surface and keep the moisture, so that the net laying is flattened and automated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agricultural machinery, and particularly to a multifunctional tea picking machine. BACKGROUND

[0002] At present, tea picking machines have been widely used in tea picking operations. In order to improve the efficiency of tea garden management, some tea picking machines are equipped with a net covering mechanism, which can cover the sunshade net on the surface of the tea tree after picking to achieve the functions of windproof, insect prevention, and sunshade. However, the existing net covering technology has significant defects in actual application:

[0003] Because the protective net is generally soft and light in quality, the net body is easily affected by wind, irregular shape of the tea tree canopy, or mechanical motion inertia during the net covering process, resulting in wrinkles or local accumulation of the net surface after covering, which is difficult to directly lay flat on the surface of the tea tree;

[0004] 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 covering to ensure its flat covering. This method greatly reduces the work efficiency and increases the labor force and labor cost. SUMMARY

[0005] The present application provides a multifunctional tea picking machine to solve the problems in the prior art. The net surface is automatically laid flat through the cooperation of air flow adsorption and mechanical sliding, and the spraying system is combined to lubricate the net surface and maintain moisture, realizing the flatness and automation of net covering.

[0006] To solve the above technical problems, the present application solves the problems by the following technical scheme: a multifunctional tea picking machine, comprising a vehicle body, a cutter arranged at the front end of the vehicle body in the direction of travel, and a covering unit arranged at the rear end of the vehicle body in the direction of travel;

[0007] The covering unit comprises a frame, a net roll, and a laying unit arranged on the frame for laying the net flat on both sides;

[0008] The laying unit comprises an extension pipe and a laying pipe arranged on both sides of the extension pipe, the extension pipe is provided with an adsorption pipe, the laying pipe is arranged on the adsorption pipe, and the diameter of the adsorption pipe is smaller than the diameter of the extension pipe;

[0009] The middle part of the extension pipe is provided with an air inlet pipe;

[0010] The frame is provided with a spiral shaft for driving the laying pipe to slide to both sides, the laying pipe is provided with a driving plate matched with the spiral shaft, and one end of the spiral shaft is connected with a driving motor.

[0011] Preferably, in the above scheme, the telescopic pipe comprises a first telescopic section arranged at the middle portion and connected with the air inlet pipe, and a second telescopic section symmetrically arranged at both sides of the first telescopic section, and the adsorption pipe is connected with the first telescopic section and the second telescopic section at both ends.

[0012] Preferably, in the above scheme, side plates matched with the telescopic pipe are symmetrically arranged at both sides of the frame body, and ventilation holes penetrating through the telescopic pipe are arranged on the side plates.

[0013] Preferably, in the above scheme, the helical shaft is slidingly arranged at both ends of the side plates, and a first sliding groove matched with the helical shaft is arranged on the side plates.

[0014] Preferably, in the above scheme, a rotating plate is rotatably arranged on the ventilation hole, the driving motor is arranged on the rotating plate at any one side, a driving push rod is arranged on the frame body, one end of the driving push rod is rotatably arranged on the frame body, and the other end of the driving push rod is connected with a swing arm on the rotating plate through a pin shaft.

[0015] Preferably, in the above scheme, a through hole matched with the ventilation hole is arranged on the rotating plate, a plurality of first ribs are arranged on the ventilation hole, a plurality of second ribs matched with the first ribs are arranged on the through hole, and a telescopic film is arranged between the first ribs and the second ribs.

[0016] Preferably, in the above scheme, a spraying pipe is arranged on the air inlet pipe, a spraying pump is connected with the spraying pipe, and the spraying pump is connected with the water tank.

[0017] Preferably, in the above scheme, a guide rod is arranged on the driving plate, and a second sliding groove matched with the guide rod is arranged on the side plate.

[0018] Preferably, in the above scheme, the helical shaft is a bidirectional helical shaft, a guide pin matched with a helical groove on the helical shaft is arranged on the driving plate, and a reversing groove connected with the helical groove and allowing the driving plate to slide reversely is arranged on the helical shaft.

[0019] Preferably, in the above scheme, a controller is arranged, and the controller is connected with the driving motor, the driving push rod and the spraying pump and realizes automatic control of the driving motor, the driving push rod and the spraying pump.

[0020] A driving switch matched with the driving plate is arranged on the side plate, and the driving switch is connected with the controller.

[0021] The beneficial effects of the present application are as follows:

[0022] 1. The pipe adsorption net surface is laid, and the helical shaft is used to drive sliding, so that the net surface is automatically laid from the middle to both sides, manual adjustment is not needed, and automatic laying of the net surface is realized.

[0023] 2. Spray synergistic lubrication: spray water lubrication on the net surface when laying the pipe, reduce friction resistance, and at the same time, water is retained on the net surface, which is beneficial to the growth of tea trees;

[0024] 3. Self-adaptive airflow regulation: the ventilation hole and the rotating plate are linked to realize the switching of the adsorption and spraying states of the laying pipe, and realize the functions of adsorption during paving and spraying during resetting;

[0025] 4. Intelligent control: the controller coordinates the driving, spraying and reversing operations to realize full-process automation and greatly improve the operation efficiency of the tea picker. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a front view structural schematic diagram of the application.

[0027] Figure 2 It is a covering unit perspective structural schematic diagram of the application.

[0028] Figure 3 It is a covering unit cross-sectional structural schematic diagram of the application.

[0029] Figure 4 It is an exploded perspective view of the driving motor.

[0030] Figure 5 It is a driving plate and laying pipe perspective structural schematic diagram of the application.

[0031] Figure 6 It is a telescopic pipe perspective structural schematic diagram of the application. DETAILED DESCRIPTION

[0032] The application will be further described in detail below in combination with the drawings and specific embodiments: refer to Figures 1-6 .

[0033] A multifunctional tea picker includes a vehicle body 1, a cutter 2 arranged at the front end of the vehicle body 1 in the running direction, and a covering unit 3 arranged at the rear end of the vehicle body 1 in the running direction, the vehicle body 1 includes a vehicle frame and a track chassis, the vehicle frame is arranged on the track chassis, and the movement of the vehicle frame is realized by the running of the track chassis.

[0034] The vehicle frame is a gantry type vehicle frame, the cutter 2 is arranged at the middle part of the vehicle frame, and the surface of tea leaves is sheared by the cutter 2 when the vehicle body 1 runs; a wind channel is arranged on the vehicle frame, one end of the wind channel is connected with the cutter 2, the other end of the wind channel extends upward and is connected with a collection box, a fan is arranged on the vehicle frame to provide conveying air for the wind channel, tea leaves are blown into the wind channel by the fan after being sheared by the cutter 2, and the tea leaves are conveyed to the collection box by the wind channel to be collected, thereby realizing the picking of tea leaves.

[0035] The cutter 2 is located at the front end of the vehicle body 1 in the direction of travel, and the covering unit 3 is arranged at the rear end of the vehicle body 1 in the direction of travel, that is, after the tea tree surface is sheared by the cutter 2, the covering unit 3 covers the tea tree surface with a net, as shown in Figure 1 .

[0036] The covering unit 3 includes a frame body 301, a net roll 302, and a laying unit 4 arranged on the frame body 301 for flattening the two sides of the net box. Specifically, the net roll 302 is connected with a motor, and the net is laid on the tea tree surface by rotating the motor. The laying unit 4 is arranged on the side of the net roll 302 away from the traveling direction of the vehicle body 1. When the net is laid by the motor, the laying unit 4 can lay the net from the center to the two sides, so that the net is laid flat on the tea tree surface as a whole.

[0037] As shown in Figures 2-4 , the laying unit 4 includes an extension pipe 401 and laying pipes 402 arranged on both sides of the extension pipe 401. Specifically, the frame body 301 is symmetrically provided with side plates 5 on both sides, the extension pipe 401 is fixed at both ends of the side plates 5, and the side plates 5 are provided with air vents 501 penetrating the inner hole of the extension pipe 401. The extension pipe 401 includes a first extension section 406 in the middle and second extension sections 407 symmetrically arranged at both ends. The first extension section 406 and the second extension section 407 are connected by a suction pipe 403, and the diameter of the suction pipe 403 is smaller than the diameter of the extension pipe 401. The cross-sectional diameter of the extension pipe 401 is larger than the diameter of the suction pipe 403 when the extension pipe 401 is elongated or compressed.

[0038] The laying pipe 402 is arranged on the suction pipe 403. The extension pipe 401 is provided with an air inlet pipe 404 in the middle, that is, the air inlet pipe 404 is arranged on the first extension section 406 and penetrates the inner cavity of the extension pipe 401. The air inlet pipe 404 is connected with a fan, that is, the fan sends the wind power to the first extension section 406 of the extension pipe 401 through the air inlet pipe 404, and then the wind power is discharged outward through the second extension sections 407 on both sides and the air vents 501 on the side plates 5.

[0039] The laying pipe 402 is rotatably arranged on the suction pipe 403, and the pipe hole of the laying pipe 402 always penetrates the inner cavity of the suction pipe 403. When the wind power enters the extension pipe 401 through the air inlet pipe 404, a high-speed airflow is formed in the extension pipe 401. At this time, when the airflow passes through the suction pipe 403, a negative pressure suction force is formed at the laying pipe 402 due to the reduction of the cross section, so that a suction force is formed at the pipe opening of the laying pipe 402 to adsorb the net surface. The pipe opening of the laying pipe 402 is provided with a tapered suction port made of smooth rubber. In the initial state (the laying pipe 402 is in the Figures 2-3 state shown in the figure), the pipe opening is close to the net surface and perpendicular or nearly perpendicular to the net surface.

[0040] The frame body 301 is provided with a screw shaft 303 for driving the laying pipe 402 to slide to both sides, the screw shaft 303 is symmetrically arranged, and the middle part is fixed into one body by a connecting shaft, as shown in Figure 2 The laying pipe 402 is provided with a driving plate 405 matched with the screw shaft 303, specifically, the screw shaft 303 is a bidirectional screw shaft, the driving plate 405 is provided with a sliding hole matched with the screw shaft 303; the screw shaft 303 is provided with a cross spiral groove 8, which is a bidirectional screw shaft existing technology and will not be described here; the driving plate 405 is provided with a guide pin 801 matched with the spiral groove 8 and clamped into the groove; the both ends of the screw shaft 303 are provided with a reversing groove 802, when the screw shaft 303 rotates, the driving plate 405 can slide to one end along the axis of the screw shaft 303, when sliding into the reversing groove 802, the guide pin 801 slides into the reverse spiral groove, so that the driving plate 405 reversely slides, in addition, the existing technology of bidirectional screw shaft driving will not be described here.

[0041] The screw shaft 303 is connected with a driving motor 304 at any end, the driving motor 304 can be a servo motor, as shown on the right upper side, when the driving motor 304 drives the screw shaft 303 to rotate, the driving plate 405 can be driven to reciprocatingly slide along the axis of the screw shaft 303, further, the driving plate 405 drives the laying pipe 402 to reciprocatingly slide along the axis, and the translation of the laying pipe 402 realizes the paving of the net surface through the telescopic function of the telescopic pipe 401.

[0042] In order to make the driving plate 405 contact with the net surface when sliding to the end close to the side plate 5 and not adsorb the net surface when resetting, a mechanism for rotating the laying pipe 402 is arranged in the embodiment, specifically, the both ends of the screw shaft 303 are slidingly arranged on the side plate 5, the side plate 5 is provided with a first sliding groove 502 matched with the screw shaft 303, the first sliding groove 502 is a circular arc groove body concentrically arranged with the telescopic pipe 401, that is, when the screw shaft 303 slides along the first sliding groove 502, it is a circular motion around the telescopic pipe 401.

[0043] The ventilation hole 501 is rotatably provided with a rotating plate 503, the driving motor 304 is arranged on the rotating plate 503 at any side, and the rotating plate 503 is rotatably connected with the middle support of the ventilation hole 501, the frame body 301 is provided with a driving push rod 6, one side of the rotating plate 503 is provided with a motor mounting plate matched with the driving motor 304, and the other side is provided with a swing arm 504, the rod base end of the driving push rod 6 is rotatably arranged on the frame body 301 by a pin shaft, as shown in Figure 2As shown, the other end is connected with the swing arm 504 on the rotating plate 503 through a pin, and the rotating plate 503 is rotated by driving the driving push rod 6, and at the same time, the rotating plate 503 drives the spiral shaft 303 to slide along the first sliding slot 502, and the spiral shaft 303 drives the driving plate 405 to rotate around the center of the adsorption pipe 403, so as to adjust the angle of the pipe opening of the laying pipe 402.

[0044] The driving plate 503 is provided with a rotating hole, the laying pipe 402 is in a spatial axis vertical state with the rotating hole, and the driving plate 503 is rotationally connected with the pipe wall of the adsorption pipe 403 through the rotating hole, so as to realize the rotational connection of the laying pipe 402 and the adsorption pipe 403, and the pipe hole of the adsorption pipe 403 and the pipe hole of the laying pipe 402 are through.

[0045] In order to realize the rotation of the driving plate 405 around the adsorption pipe 403 while sliding, a guide rod 7 is arranged on the driving plate 405 in the embodiment, the driving plate 405 is slidingly arranged on the guide rod 7, and the two ends of the guide rod 7 are arranged through the side plate 5, the side plate 5 is provided with a second sliding slot 701, and the second sliding slot 701 is also a circular arc slot concentrically arranged with the telescopic pipe 401, that is, the driving plate 405 is rotated to make the guide rod 7 slide along the second sliding slot 701.

[0046] The rotating plate 503 is provided with a through hole 505 matched 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 matched with the first rib 506, and initially, the first rib 506 and the second rib 507 are in contact and abutment state, at this time, the air discharged from the telescopic pipe 401 can be discharged through the gap between the ribs, as shown in the state, at this time, the pipe opening of the laying pipe 402 is in adsorption state due to the cross-section change of the adsorption pipe 403 and the telescopic pipe 401. Figure 2

[0047] The first rib 506 and the second rib 507 are provided with a stretchable film; in the initial state, the stretchable film is in a folded state, when the driving push rod 6 drives the rotating plate 503 to rotate by a certain angle, the stretchable film between the first rib 506 and the second rib 507 is unfolded at this time, and the ventilation hole 501 is blocked, at this time, the air in the telescopic pipe 401 can only be discharged through the laying pipe 402, so as to realize the blowing effect of the laying pipe 402.

[0048] ​The air inlet pipe 404 is provided with a spraying pipe, the spraying pipe is connected with a spraying pump, the spraying pump is connected with a water tank, whether the spraying pipe sprays is controlled by the spraying pump, that is, when the laying pipe 402 is adsorbed, the spraying pump stops working, when the laying pipe 402 is in the blowing state, the spraying pump works to spray atomized water droplets into the air inlet pipe 404, the water droplets are sprayed out atomized particles at the laying pipe 402 after being discharged into the telescopic pipe 401 through the air inlet pipe 404, so as to wet and lubricate the net surface.

[0049] The tea picking machine is provided with a controller connected with the driving motor 304, the driving push rod 6 and the spraying pump and achieving automatic control of the driving motor 304, the driving push rod 6 and the spraying pump; the side plate 5 is provided with a driving switch 9 matched with the driving plate 405, and a reset switch matched with the driving plate 405 can also be arranged on the connecting shaft; the driving switch 9 and the reset switch are connected with the controller, so as to identify the position state of the driving plate 405; the controller can be controlled by a single-chip microcomputer or a PLC controller, so as to improve the intelligence of the whole machine.

[0050] A working process of a multifunctional tea picking machine:

[0051] S1: system starting and net covering preparation

[0052] Starting equipment: the tea picking machine vehicle body 1 advances, the cutter 2 picks tea leaves, and the covering unit 3 is synchronously unfolded;

[0053] Net roll release: the net roll 302 releases the protective net, and the net body is preliminarily covered on the surface of the tea tree;

[0054] Air flow generation: the fan connected with the air inlet pipe 404 starts, and air flow enters the inside of the telescopic pipe 401;

[0055] S2: adsorption and paving

[0056] Negative pressure adsorption: when the air flow passes through the adsorption pipe 403 with a smaller diameter, the flow rate increases and the pressure decreases, negative pressure adsorption of the net surface is formed, and the main air flow is discharged through the ventilation hole, so that the net body is suspended or in contact with the surface of the laying pipe 402;

[0057] Mechanical paving: the driving motor 304 drives the bidirectional screw shaft 303 to rotate, the screw groove 8 cooperates with the guide pin 801 of the driving plate 405, and the laying pipe 402 slides to both sides;

[0058] Net surface unfolding: when the laying pipe 402 slides, the adsorbed net surface is evenly pulled to both sides, wrinkles are eliminated, and the net surface is paved on the surface of the tea tree;

[0059] S3: spraying lubrication and moisture retention

[0060] 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 air vent, at this time the airflow in the telescopic pipe 401 can only be discharged through the laying pipe 402;

[0061] Laying pipe 402 rotates a certain angle under the drive of rotating plate 503, and the pipe opening is rotated to the un-laid net surface, and the atomized particles are sprayed onto the un-laid net surface through the laying pipe 402;

[0062] Lubricating effect: after the laying pipe 402 slides to the end, it slides reversely through the switching of the bidirectional spiral groove, that is, it separates from the net surface during the reverse sliding of the laying pipe 402 and moistens the un-laid net surface;

[0063] Moisturizing effect: the water retained on the net surface after paving penetrates to the surface of tea trees, 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 paving, facilitating paving;

[0064] S4: cycle control

[0065] Reciprocating cycle: the screw shaft 303 continuously rotates to realize the reciprocating motion of the laying pipe 402, which is synchronized with the release speed of the net roll 302, ensuring continuous net covering.

[0066] The above examples are only used to illustrate the technical solutions of the present application, and not to limit it; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A multi-functional tea-picking machine, characterized in that: It includes a vehicle body (1), a cutting tool (2) located at the front end of the vehicle body (1) in the direction of travel, and a cover unit (3) located at the rear end of the vehicle body (1) in the direction of travel. The covering unit (3) includes a frame (301), a net roll (302), and a laying unit (4) provided on the frame (301) for spreading the net to both sides. The laying unit (4) includes a telescopic pipe (401) and laying pipes (402) on both sides of the telescopic pipe (401). An adsorption pipe (403) is provided on the telescopic pipe (401), and the laying pipe (402) is provided on the adsorption pipe (403). The diameter of the adsorption pipe (403) is smaller than the diameter of the telescopic pipe (401). An air inlet pipe (404) is provided in the middle of the telescopic pipe (401). The frame (301) is provided with a spiral shaft (303) that drives the laying pipe (402) to slide to both sides. The laying pipe (402) is provided with a drive plate (405) that cooperates with the spiral shaft (303). A drive motor (304) is connected to any end of the spiral shaft (303). The frame (301) is symmetrically provided with side plates (5) that cooperate with the telescopic pipe (401) on both sides, and the side plates (5) are provided with ventilation holes (501) that communicate with the telescopic pipe (401). A rotating plate (503) is rotatably mounted on the ventilation hole (501). The drive motor (304) is mounted on the rotating plate (503) on either side. A drive push rod (6) is mounted on the frame (301). One end of the drive push rod (6) is rotatably mounted on the frame (301), and the other end is connected to the swing arm (504) on the rotating plate (503) via a pin. The rotating plate (503) is provided with a through hole (505) that cooperates 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) that cooperates with the first ribs (506). A telescopic membrane is provided between the first ribs (506) and the second ribs (507). The air inlet pipe (404) is equipped with a spray pipe, which is connected to a spray pump, and the spray pump is connected to a water tank.

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

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

4. A multi-functional tea-picking machine according to claim 1, characterized in that: The drive plate (405) is provided with a guide rod (7), and the side plate (5) is provided with a second groove (701) that cooperates with the guide rod (7).

5. A multi-functional tea-picking machine according to claim 1, characterized in that: The spiral shaft (303) is a bidirectional spiral shaft, and the drive plate (405) is provided with a guide pin (801) that is adapted to the spiral groove (8) on the spiral shaft (303); the spiral shaft (303) is provided with a reversing groove (802) that allows the drive plate (405) to slide in the opposite direction and is connected to the spiral groove (8).

6. A multi-functional tea-picking machine according to claim 1, characterized in that: Includes a controller, which is connected to the drive motor (304), the drive push rod (6) and the spray pump and realizes their automated control; The side plate (5) is provided with a drive switch (9) that cooperates with the drive plate (405), and the drive switch (9) is connected to the controller.

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