Palm fruit cutting machine

Abstract

The application relates to a palm fruit cutting machine, which comprises a cutter, a support rod assembly connected with the cutter, a power battery arranged at one end of the support rod assembly away from the cutter, and a driving mechanism arranged between the support rod assembly and the cutter. The driving mechanism comprises a motor connected with the power battery and outputting torque, and a worm gear assembly with one end connected with the cutter and the other end connected with the motor. The torque output by the motor is decelerated and increased in torque by the worm gear assembly, and then drives the cutter to reciprocate along the extension direction of the support rod assembly. The worm gear assembly is used for deceleration and torque increase, so that the cutter can reciprocate in a straight line direction to cut palm trees. The application adopts a power battery as a power source, has the advantage of small weight compared with a traditional gasoline engine, and is convenient for manual operation. Meanwhile, a voltage lower than or equal to 24V is used for driving, so that the life safety of users is avoided from being harmed by electric leakage in a humid environment.

Description

Technical Field

[0001] This application relates to agricultural harvesting equipment, and more particularly to a palm tree harvester. Background Technology

[0002] Palm trees are one of the most widely distributed tree species in my country. Their fan-shaped leaves are often used to make handicrafts such as fans and hats. Their fruits are edible and have medicinal uses, making them versatile and economically valuable. Traditionally, palm leaves and fruits are harvested using gasoline-powered harvesters. These machines typically require the operator to stand on the ground and use a long pole to raise the harvester to a height. However, gasoline engines are heavy, and the long pole itself is also heavy, resulting in a significant load on the equipment during use. Especially when dealing with palm trees that are tens or even twenty meters tall, the operator must hold the heavy equipment for extended periods, leading to high operational difficulty, labor intensity, and reduced efficiency and stability. With advancements in battery technology, some machines are beginning to use high-energy-density battery packs to replace traditional gasoline power, promoting lighter equipment. For example, invention patent CN103535157B discloses an electric palm tree harvester, whose structural design is modeled after a German gasoline harvester, using a motor combined with a battery pack for drive, aiming to reduce the overall weight of the equipment and improve portability. However, in actual production and application, this patented solution has not been widely used. The reason is that it uses an electric motor to directly drive the reciprocating motion of the cutter. However, under the premise of limited size and voltage, the power provided by the electric motor is significantly lower than that of a traditional gasoline engine, resulting in insufficient output torque. It is difficult to drive the cutter to complete effective cutting, especially when facing thick and hard palm branches or fruit bunches, and it cannot meet the actual operation requirements.

[0003] Therefore, there is an urgent need to provide a palm tree harvester that uses a high-energy battery pack as a power source, has the advantage of being lightweight, and can output sufficient cutting force through an efficient torque conversion mechanism. Utility Model Content

[0004] The purpose of this application is to provide a palm tree harvester that uses a high-energy battery pack as a power source, has the advantage of being lightweight, and can output sufficient cutting force through an efficient torque conversion mechanism.

[0005] According to one aspect of this application, a palm tree harvester is provided, the palm tree harvester comprising:

[0006] Knives,

[0007] The support rod assembly is connected to the cutting tool;

[0008] The power battery is located at the end of the support rod assembly away from the cutter.

[0009] A drive mechanism is located between the support rod assembly and the cutting tool. The drive mechanism includes a motor connected to a power battery and outputting torque, and a worm gear assembly with one end connected to the cutting tool and the other end connected to the motor. The torque output by the motor is reduced and increased by the worm gear assembly, which then drives the cutting tool to reciprocate along the extension direction of the support rod assembly.

[0010] More preferably, the drive mechanism further includes:

[0011] A star gear reducer is disposed between the motor and the worm gear assembly, and the output shaft of the motor transmits torque to the star gear reducer. After being reduced in speed and increased in torque by the star gear reducer, the torque is transmitted to the worm gear assembly.

[0012] The motor is connected to the support rod assembly, and the star gear reducer is located at the end of the motor away from the support rod assembly; the worm gear assembly is located at the end of the star gear reducer away from the motor.

[0013] More preferably, the worm gear assembly includes:

[0014] case,

[0015] The worm gear is located inside the housing;

[0016] The worm gear is connected at one end to the star gear reducer to receive torque from the motor, and at the other end extends into the housing and engages with the worm wheel. The worm gear transmits torque to the worm wheel to drive the worm wheel to rotate.

[0017] More preferably, the worm gear grip assembly further includes:

[0018] A planetary shaft, fixed to the worm gear, rotates along with the worm gear when the worm drives the worm gear to rotate; the cutting tool includes:

[0019] The tool holder is connected to the planetary shaft. When the planetary shaft rotates with the worm gear, the tool holder reciprocates along the extension direction of the support rod assembly, following the planetary shaft.

[0020] More preferably, the cutting tool further includes:

[0021] The cutting head, connected to the handle, reciprocates along the extension direction of the support rod assembly as the handle follows the planetary axis, thereby cutting the palm tree.

[0022] More preferably, the blade is one or more of a sickle or a shovel.

[0023] More preferably, the strut assembly includes:

[0024] A support rod extends along its length and is fixed to the motor. The star gear reducer is located at the end of the motor away from the support rod. The cutter head reciprocates along the extension direction of the support rod, following the cutter handle.

[0025] A handle is located at the end of the support rod opposite to the motor, and a power battery is located at the end of the handle opposite to the support rod; a button switch is provided on the handle, and the button switch is electrically connected to the motor to control the motor to start or stop.

[0026] More preferably, the palm tree harvester further includes:

[0027] The drive controller is located between the power battery and the handle, and is electrically connected to the power battery, the motor and the button switch on the handle.

[0028] More preferably, the power battery is a high-energy lithium battery pack.

[0029] More preferably, the voltage of the power battery is less than or equal to 24V.

[0030] This application has the following beneficial effects:

[0031] By setting up a worm gear assembly, the torque output by the motor is transmitted to the worm, which rotates at high speed and drives the worm wheel to rotate. After receiving the torque transmitted by the worm, the worm wheel outputs it in a low-speed, high-torque manner, thereby driving the cutter to reciprocate in a linear direction to complete the cutting operation of palm fruit or branches.

[0032] This application uses a power battery as the main power source, replacing the traditional gasoline engine drive method. It has significant advantages such as light weight, low vibration, and low noise, which significantly improves the portability and operability of the equipment and makes it more suitable for manual hand-held operation.

[0033] In addition, the system adopts a low-voltage DC power supply scheme of no more than 24V, which effectively reduces the risk of leakage in the electrical system in tropical operating environments such as high temperature and high humidity while meeting the cutting performance of the tool, thereby improving the electrical safety of the equipment and effectively protecting the personal safety of users. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0035] Figure 1A schematic diagram of the mechanism of a palm tree harvester according to an embodiment of this application when equipped with a sickle head;

[0036] Figure 2 A schematic diagram of the mechanism of the palm tree harvester according to one embodiment of this application when equipped with a shovel blade head;

[0037] Figure 3 This is a schematic diagram of the worm gear assembly according to one embodiment of this application.

[0038] Figure 4 This is an exploded view of the drive mechanism and cutting tool described in one embodiment of this application.

[0039] The following are the reference numerals: 100, Palm tree harvester; 10, Blade; 20, Support rod assembly; 30, Power battery; 40, Drive mechanism; 41, Motor; 43, Worm gear assembly; 42, Planetary gear reducer; 431, Housing; 432, Worm gear; 433, Worm; 434, Planetary shaft; 11, Blade holder; 12, Blade head; 21, Support rod; 22, Handle; 50, Drive controller. Detailed Implementation

[0040] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0041] Please refer to Figure 1 - Figure 4 One embodiment of this application provides a palm tree harvester 100, which includes: a blade 10, a support rod assembly 20, a power battery 30, and a drive mechanism 40.

[0042] Specifically, the support rod assembly 20 is connected to the cutting tool 10. A power battery 30 is located at the end of the support rod assembly 20 furthest from the cutting tool 10. A drive mechanism 40 is located between the support rod assembly 20 and the cutting tool 10.

[0043] The drive mechanism 40 includes a motor 41 and a worm gear assembly 43. The motor 41 is connected to the power battery 30 and outputs torque. One end of the worm gear assembly 43 is connected to the cutter 10, and the other end is connected to the motor 41. The torque output by the motor 41 is transmitted to the worm gear 432 to drive the cutter 10 to reciprocate along the extension direction of the support assembly 20. The extension direction of the branch assembly is... Figure 1 The vertical straight line direction in the middle.

[0044] Traditional palm tree harvesters 100 use gasoline engines as their power source, requiring users to manually carry the harvester 100 to work on the palm trees. Tall palm trees can reach heights of ten to twenty meters or even higher. Not only is the gasoline engine heavy, but the branch and trunk components are also very heavy, resulting in a significant burden on the user's operator and making operation difficult. This embodiment uses a power battery 30 instead of a traditional gasoline engine, greatly reducing weight. However, the power battery 30 cannot provide the same high power output as a gasoline engine, resulting in insufficient torque output from the drive mechanism 40.

[0045] In this specific embodiment, the worm gear assembly 43 is mainly used to achieve speed reduction and torque increase. The worm 433 can be directly connected to the output shaft of the motor 41. The high-speed rotating worm 433 transmits torque to the worm wheel 432, which reduces speed and increases torque, outputting a large torque. The torque is used to drive the tool 10 to reciprocate more powerfully in a straight line, thereby solving the problem of insufficient torque caused by low power.

[0046] More preferably, to further improve torque, the drive mechanism 40 also includes a planetary gear reducer 42.

[0047] Specifically, the star gear reducer 42 is located between the motor 41 and the worm gear assembly, and the output shaft of the motor 41 transmits torque to the star gear reducer 42. After being reduced in speed by the star gear reducer 42, the torque is transmitted to the worm gear assembly. The star gear reducer 42 mainly performs the work of reducing speed and increasing torque, thereby transmitting the reduced and increased torque power to the worm 433. The worm 433 cooperates with the worm gear 432 to further reduce speed and increase torque, thereby further providing output torque.

[0048] Meanwhile, the motor 41 is connected to the support rod assembly 20, and the star gear reducer 42 is located at the end of the motor 41 opposite to the support rod assembly 20; the worm gear assembly 43 is located at the end of the star gear reducer 42 opposite to the motor 41. This arrangement brings the motor 41 and the drive mechanism 40 closer to the cutter 10, effectively avoiding distance loss during power transmission in application scenarios where palm trees can reach heights of twenty to thirty meters.

[0049] More preferably, the worm gear assembly includes: a housing 431, a worm gear 432, and a worm 433.

[0050] The worm gear 432 is housed within the housing 431. One end of the worm 433 is connected to the planetary gear reducer 42 and receives torque from the motor 41 or the planetary gear reducer 42. The other end of the worm 433 extends into the housing 431 and engages with the worm gear 432, transmitting torque to the worm gear 432 to drive its rotation. In this embodiment, the torque output by the motor 41 is first reduced and amplified by the planetary gear reducer 42 before being transmitted to the worm gear assembly 43 for further reduction and amplification.

[0051] During operation, the motor 41 serves as the primary power source, and its initial torque is first transmitted to the planetary gear reducer 42. The planetary gear reducer 42, through the engagement of its internal planetary gears and sun gear, performs initial speed reduction while simultaneously increasing the output torque. This torque is further transmitted to the worm gear 433, which rotates and drives the worm wheel 432 to achieve secondary speed reduction and torque amplification. Finally, the torque is output to the cutter 10 in a low-speed, high-torque manner, enabling efficient cutting or harvesting of crops such as palm fruits.

[0052] More preferably, the worm gear 432 grip assembly further includes a planetary shaft 434.

[0053] Specifically, the planetary shaft 434 is fixed to the worm gear 432. When the worm 433 drives the worm gear 432 to rotate, the planetary shaft 434 rotates with the worm gear 432.

[0054] During operation, when the worm 433 rotates around its axis and drives the worm wheel 432 to rotate, the planetary shaft 434 also rotates around the central axis of the worm wheel 432. Since the planetary shaft 434 is rigidly fixed to the worm wheel 432, its motion trajectory is consistent with that of the worm wheel 432, and it can be used as the power output shaft of the subsequent mechanism.

[0055] Furthermore, the cutting tool 10 includes a handle 11.

[0056] The handle 11 is connected to the planetary shaft 434. When the planetary shaft 434 rotates with the worm gear 432, the handle 11 reciprocates along the extension direction of the support rod assembly 20 following the planetary shaft 434.

[0057] Specifically, one end of the tool holder 11 is connected to the planetary shaft 434, and a reliable transmission connection can be maintained with the planetary shaft 434 through a coupling, pin, or sliding guide rail. The planetary shaft 434, as a follower structure, is fixedly mounted on the worm gear 432, and while the worm 433 drives the worm gear 432 to rotate, it drives the tool holder 11 to move synchronously.

[0058] The other end of the tool holder 11 is disposed within the support rod assembly 20 or arranged along the guide path of the support rod assembly 20, and is restricted by it, so that the movement trajectory of the tool holder 11 is effectively constrained. The support rod assembly 20 may be a slide rail, guide groove, guide post or linkage mechanism, forming a linear guide system to ensure that the movement of the tool holder 11 is precisely reciprocating along a set direction—that is, the extension direction of the support rod assembly 20.

[0059] In practical operation, when the worm 433 rotates continuously, it drives the worm wheel 432 to rotate. The planetary shaft 434 on the worm wheel 432 then runs in a circular trajectory. Because the tool holder 11 is connected to the planetary shaft 434 and is constrained by the linear guidance of the support rod assembly 20, it achieves reciprocating linear motion at the output end. This motion is converted from rotation to linear motion, and structurally, it does not require a complex crank-slider mechanism, thus featuring high efficiency, low wear, and smooth motion.

[0060] More preferably, the cutting tool 10 further includes a cutting head 12.

[0061] The blade head 12 is connected to the handle 11. When the handle 11 reciprocates along the extension direction of the support rod assembly 20 following the planetary axis 434, the blade head 12 reciprocates along the extension direction of the support rod assembly 20 following the handle 11 to cut the palm tree.

[0062] In this embodiment, the blade 12 can be one of a sickle or a shovel, or it can be other types of blades 12, or a combination of multiple blades 12.

[0063] Specifically, the cutter head 12 can be installed at the front end of the cutter handle 11 and reliably connected to the cutter handle 11 by means of welding, threaded connection, pin locking, or snap-fit ​​structure, and reciprocates along the extension direction of the support rod assembly 20 together with the cutter handle 11. When the worm gear 432, worm 433, and planetary shaft 434 drive the cutter handle 11 to perform linear reciprocating motion, the cutter head 12 synchronously follows the motion trajectory to achieve high-frequency, linear cutting action.

[0064] The structure and type of the blade head 12 can be flexibly configured according to different harvesting objects. Preferably, the blade head 12 can be a sickle-type blade head 12 or a shovel-type blade head 12, or it can be other forms of cutting tools 10 suitable for cutting crops, such as: serrated blade head 12, double-edged shear blade head 12, punching blade head 12, or combined blade head 12.

[0065] More preferably, the support rod assembly 20 includes a support rod 21 and a handle 22.

[0066] The support rod 21 extends along its length and is fixed to the motor 41. The star gear reducer 42 is located at the end of the motor 41 opposite to the support rod 21, and the cutter head 12 reciprocates along the extension direction of the support rod 21 following the cutter handle 11.

[0067] The handle 22 is located at the end of the support rod 21 opposite to the motor 41, and the power battery 30 is located at the end of the handle 22 opposite to the support rod 21. A push-button switch is provided on the handle 22, and the push-button switch is electrically connected to the motor 41 to control the motor 41 to start or stop.

[0068] In this embodiment, the star gear reducer 42 is installed at the end of the motor 41 away from the support rod 21, and is used to perform first-stage reduction and torque amplification on the output of the motor 41. Its output end is connected to the worm gear assembly 43 to achieve second-stage reduction. Finally, the transmission link drives the tool holder 11 and the tool head 12 to reciprocate along the support rod 21.

[0069] More preferably, the palm tree harvester 100 also includes a drive controller 50, which is used to manage the power supply and control the operation of the entire machine's electric system to ensure that the equipment operates efficiently, safely and stably.

[0070] Specifically, the drive controller 50 is located between the power battery 30 and the handle 22, and is electrically connected to the power battery 30, the motor 41, and the button switch on the handle 22 via wires, thus constructing a complete electronic control system. This controller integrates power management, motor 41 drive, current / temperature protection, and other functional modules, possessing intelligent judgment and response capabilities, and can comprehensively control functions such as motor 41 start / stop, speed adjustment, and overload protection.

[0071] In this embodiment, the power battery 30 is a high-energy lithium battery pack, preferably ternary lithium or lithium iron phosphate type, which has the characteristics of high energy density, light weight, high temperature resistance, and long cycle life. To ensure the safety and stability of the equipment in harsh environments, the rated voltage of the battery pack is set to less than or equal to 24V, which complies with the "safe voltage for human contact" limit in international safety standards such as IEC / UL 60950-1.

[0072] Since palm trees are mainly distributed in tropical regions, the working environment is often characterized by high temperature, high humidity, and frequent rain. Furthermore, this equipment is a handheld tool, making electrical safety risks a key concern. Therefore, limiting the system voltage to 24V or below can effectively reduce the risk of leakage and electric shock caused by rain, sweat, or humid air, thereby maximizing the safety of the operator.

[0073] In this way, by setting up the worm gear assembly 43, the torque output by the motor 41 is transmitted to the worm 433, which rotates at high speed and drives the worm gear 432 to rotate. After receiving the torque transmitted by the worm gear 433, the worm gear 432 outputs it in a low-speed, high-torque manner, thereby driving the cutter 10 to reciprocate in a linear direction to complete the cutting operation of palm fruit or branches.

[0074] This application uses a power battery 30 as the main power source, replacing the traditional gasoline engine drive method. It has significant advantages such as light weight, low vibration, and low noise, which significantly improves the portability and operability of the equipment and makes it more suitable for manual hand-held operation.

[0075] In addition, the system adopts a low-voltage DC power supply scheme of no more than 24V, which effectively reduces the risk of leakage in the electrical system in tropical operating environments such as high temperature and high humidity while meeting the cutting performance of the tool 10, thereby improving the electrical safety of the equipment and effectively protecting the personal safety of users.

[0076] The embodiments described above are merely examples of several implementations of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application.

Claims

1. A palm tree harvesting machine, characterized in that, The palm tree harvester includes: Knives, The support rod assembly is connected to the cutting tool; The power battery is located at the end of the support rod assembly away from the cutter. A drive mechanism is located between the support rod assembly and the cutting tool. The drive mechanism includes a motor connected to a power battery and outputting torque, and a worm gear assembly with one end connected to the cutting tool and the other end connected to the motor. The torque output by the motor is reduced and increased by the worm gear assembly, which then drives the cutting tool to reciprocate along the extension direction of the support rod assembly.

2. The palm tree harvester according to claim 1, characterized in that, The drive mechanism also includes: A star gear reducer is disposed between the motor and the worm gear assembly, and the output shaft of the motor transmits torque to the star gear reducer. After being reduced in speed and increased in torque by the star gear reducer, the torque is transmitted to the worm gear assembly. The motor is connected to the support rod assembly, and the star gear reducer is located at the end of the motor away from the support rod assembly; the worm gear assembly is located at the end of the star gear reducer away from the motor.

3. The palm tree harvester according to claim 2, characterized in that, The worm gear assembly includes: case, The worm gear is located inside the housing; The worm gear is connected at one end to the star gear reducer to receive torque from the motor, and at the other end extends into the housing and engages with the worm wheel. The worm gear transmits torque to the worm wheel to drive the worm wheel to rotate.

4. The palm tree harvester according to claim 3, characterized in that, The worm gear grip assembly also includes: A planetary shaft, fixed to the worm gear, rotates along with the worm gear when the worm drives the worm gear to rotate; the cutting tool includes: The tool holder is connected to the planetary shaft. When the planetary shaft rotates with the worm gear, the tool holder reciprocates along the extension direction of the support rod assembly, following the planetary shaft.

5. The palm tree harvester according to claim 4, characterized in that, The cutting tool also includes: The cutting head, connected to the handle, reciprocates along the extension direction of the support rod assembly as the handle follows the planetary axis, thereby cutting the palm tree.

6. The palm tree harvester according to claim 5, characterized in that, The blade is one or more of a sickle or a shovel.

7. The palm tree harvester according to claim 6, characterized in that, The support rod assembly includes: A support rod extends along its length and is fixed to the motor. The star gear reducer is located at the end of the motor away from the support rod. The cutter head reciprocates along the extension direction of the support rod, following the cutter handle. A handle is located at the end of the support rod opposite to the motor, and a power battery is located at the end of the handle opposite to the support rod; a button switch is provided on the handle, and the button switch is electrically connected to the motor to control the motor to start or stop.

8. The palm tree harvester according to claim 7, characterized in that, The palm tree harvester also includes: The drive controller is located between the power battery and the handle, and is electrically connected to the power battery, the motor and the button switch on the handle.

9. The palm tree harvester according to claim 1, characterized in that, The power battery is a high-energy lithium battery pack.

10. The palm tree harvester according to claim 1, characterized in that, The voltage of the power battery is less than or equal to 24V.

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