Small electric greenhouse vegetable harvester

Abstract

The utility model provides a small electric greenhouse vegetable harvester. The small electric greenhouse vegetable harvester mainly comprises a battery pack, a header, a driving system and a control system. The battery pack serves as a power source of the harvester and supplies power to the control system and the driving system. The header comprises a line divider, a divider and a sawtooth-shaped cutting knife, and the line divider and the divider are correspondingly installed on the front edge of the cutting knife; the driving system comprises a driving motor, a gearbox, a driving rear axle, driving wheels, a header lifting motor and a cutter motor; the control system comprises a whole vehicle controller, a motor controller, a speed regulator, a current regulator and an alarm. According to the small electric greenhouse vegetable harvester, the height of the header can be adjusted to adapt to vegetables with different stubble cutting height harvesting requirements.

Description

Technical Field

[0001] The utility model relates to a greenhouse vegetable harvester, in particular to a small electric greenhouse vegetable harvester, belonging to the technical field of agricultural harvesting machinery. Background Art

[0002] my country boasts a large scale of protected agriculture, with protected vegetable plantings reaching 60 million mu (approximately 1.6 million hectares), accounting for 17% of the total vegetable planting area. Research on vegetable harvesting machinery in China started relatively late. While numerous research institutions have conducted research on various types of harvesting machinery, these are generally powered by diesel engines, which are not only noisy but also produce harmful exhaust gases, contradicting the international trend of transitioning to green and new energy agricultural equipment. Furthermore, current domestic harvesters lack adjustable headers, making them difficult to adapt to the harvesting height requirements of different protected crops.

[0003] For this reason, it is urgent to develop a small electric greenhouse vegetable harvester with adjustable cutting table height. Summary of the Invention

[0004] In order to solve the above problems, the utility model provides a small electric greenhouse vegetable harvester, including a battery pack, a harvesting platform, a drive system and a control system, wherein:

[0005] The battery pack serves as the power source of the harvester, supplying power to the control system and the drive system; the harvester table is the working device of the harvester, including a row divider, a straw divider and a serrated cutter, the row divider is used to gather vegetables, the straw divider is used to push the gathered vegetables toward the cutter, and to push down and place the cut vegetables, the row divider and the straw divider are arranged horizontally alternately, and the serrated cutter performs reciprocating linear motion to cut the vegetables pushed by the straw divider.

[0006] The drive system includes a drive motor, a gearbox, a drive rear axle, a drive wheel, a cutting table lifting motor, and a cutting knife motor. The drive motor transmits power to the gearbox and the drive rear axle. The drive rear axle transmits power to the drive wheel. The drive wheel drives the entire machine to move. The cutting table lifting motor drives the cutting table to rise and fall to adapt to vegetables of different heights. The cutting knife motor drives the serrated cutting knife to perform linear reciprocating motion.

[0007] The control system includes a vehicle controller, a motor controller, a speed regulator, a current regulator, and an alarm. The vehicle controller has a visual operation interface and operation buttons, which can control the driving of the harvester and the lifting and lowering of the cutting table, and can input the desired speed of the cutter motor and the drive motor into the motor controller. The motor controller mainly includes a speed regulator and a current regulator. The speed regulator is mainly used to receive the given speed and current speed information of the drive wheel and output a current signal. The current regulator receives the current signal sent by the speed regulator, compares it with the actual current, and adjusts the output current of the speed regulator. The alarm sounds an alarm when an error occurs in the control system.

[0008] Compared with the prior art, the utility model has the following advantages:

[0009] The utility model provides a small electric greenhouse vegetable harvester with the advantages of small size, simple power source and convenient operation. It can adapt to different types of vegetables by adjusting the height of the cutting platform and can meet the use conditions of greenhouses. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the overall structure diagram of a small electric greenhouse vegetable harvester of the utility model;

[0011] Figure 2 This is a structural diagram of the drive system of a small electric greenhouse vegetable harvester of the present utility model;

[0012] Figure 3 This is a control scheme diagram of the drive system of a small electric greenhouse vegetable harvester of the present utility model;

[0013] Figure 4 This is a current prediction control flow chart based on double closed loops for a small electric greenhouse vegetable harvester of the utility model.

[0014] Attachment Figure 1 Marking instructions: 1-row divider; 2-grain divider; 3-cutter motor; 4-cutting table lifting motor; 5-alarm; 6-vehicle controller; 7-box; 8-drive wheel; 9-motor controller; 10-drive motor; 11-gearbox; 12-drive rear axle; 13-sawtooth cutter. DETAILED DESCRIPTION

[0015] The specific implementation of the present invention is further described in detail below with reference to the accompanying drawings.

[0016] like Figure 1 As shown, the utility model proposes a small electric greenhouse vegetable harvester including a battery pack, a cutting table, a drive system and a control system. The battery pack is installed in a box 7 and serves as a power source for the harvester to supply power to the control system and the drive system.

[0017] The working principle of the harvester is as follows Figure 1 As shown, according to the stubble height of the vegetables, the cutting table lifting motor 4 works, and the cutting table is adjusted to a suitable height through the cutting table height adjustment button in the vehicle controller 6. When the driving wheel 8 moves forward under the action of the driving motor 10, the cutting table of the harvester is close to the vegetables. The vegetables are pushed toward the divider 2 under the gathering action of the row divider 1. As the harvester moves forward, the divider 2 makes a circular motion, pushing the vegetables to be cut toward the serrated cutter 13. The serrated cutter 13 makes a linear reciprocating motion under the drive of the cutter motor 3. The vegetable plants are cut off under the action of the cutting force. The cut vegetables are neatly stacked on both sides of the row divider 1 under the push of the circular motion of the divider 2.

[0018] like Figure 2 As shown, the drive system uses a lithium battery pack as the power source of the DC motor. During greenhouse operation, the drive motor 10 transmits power to the gearbox 11 and the drive rear axle 12 through the coupling, and then transmits it to the drive wheel 8. The battery pack supplies power to the drive motor 8, the cutter motor 3, the cutting platform lifting motor 4, the vehicle controller 6 and the motor controller 9. The vehicle controller 6 controls the speed of the cutter motor 3 and feeds the speed back to the motor controller 9. The speed of the cutter motor 3 and the drive motor 8 is controlled by the motor controller 9.

[0019] The control system includes a vehicle controller 6, a motor controller 9, a speed regulator, a current regulator, and an alarm 5. The vehicle controller 6 has a visual operation interface and operation buttons, which can control the driving of the harvester, control the lifting and lowering of the cutting platform, and input the predetermined speed of the cutter motor 3 and the speed of the drive motor 10 to the motor controller 9. The motor controller 9 mainly includes the speed regulator and the current regulator, and controls the output current of the cutter motor 3 and the drive motor 10 through a current prediction control strategy based on a double closed loop. The speed regulator receives the given speed and current speed information and outputs a current signal. The current regulator receives the current signal sent by the speed regulator, compares it with the actual current, and adjusts the output current of the speed regulator. The alarm 5 issues an alarm when an error occurs in the control system to avoid danger.

[0020] like Figure 3 As shown, the operator inputs the cutter speed and drive motor speed required for the vegetable harvester to work into the control system. During the operation, the following Figure 4 The dual-closed-loop current prediction control strategy shown in the figure achieves the purpose of accurately controlling the motor torque of the electric vegetable harvester by controlling the speed of the DC motor according to the changes in actual working conditions, thereby improving the utilization efficiency of the lithium battery and increasing the battery life.

[0021] It should be noted that although the utility model is described in detail above, the utility model is not limited thereto. Technicians in this technical field can make modifications based on the contents or principles recorded in the utility model. Therefore, all modifications made in accordance with the contents or principles recorded in the utility model should fall within the scope of protection of the utility model.

Claims

1. A small electric greenhouse vegetable harvester, characterized in that: The invention mainly comprises a battery pack, a cutting platform, a drive system and a control system. The battery pack is installed in a box (7) as a power source of the harvester to supply power to the control system and the drive system. The drive system comprises a drive motor (10), a gearbox (11), a drive rear axle (12), a drive wheel (8), a cutting platform lifting motor (4), and a cutter motor (3). The cutting platform lifting motor (4) drives the cutting platform to rise and fall.

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