A multi-row self-propelled pineapple leaf cutter
By designing a multi-row self-propelled pineapple leaf cutter, which employs a four-blade group arrangement and an adjustable frame structure, the problem of reliance on manual labor for pineapple leaf cutting has been solved. This achieves efficient and safe mechanized cutting, adapts to different planting conditions, and reduces labor costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- HAINAN YUNKAI TECHNOLOGY CO LTD
- Filing Date
- 2026-03-30
- Publication Date
- 2026-05-26
AI Technical Summary
Currently, pineapple leaf cutting mainly relies on manual labor, which is inefficient. There is a lack of dedicated multi-row self-propelled cutting equipment. Existing general-purpose equipment has a complex structure, inconvenient row spacing adjustment, and cannot be adapted to pineapple cultivation. In addition, the cutting precision is low, which damages the fruit and stems.
Design a multi-row self-propelled pineapple leaf cutter. It adopts four saw blades arranged in groups and is powered by a drive motor. The frame is equipped with an adjustment groove to adjust the spacing and height of the saw blades. The walking system enables self-propelled movement. The whole machine has a simple and detachable structure, which is convenient for maintenance.
It enables mechanized multi-row simultaneous cutting of pineapple leaves, increasing work efficiency several times over, reducing labor intensity and costs, adapting to different planting row spacings and growth stages, and is highly versatile and easy to promote and use.
Smart Images

Figure CN122074313A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of agricultural machinery and equipment technology, specifically to a multi-row self-propelled pineapple leaf cutter, suitable for mechanized cutting of pineapple leaves in large-scale pineapple plantations. Background Technology
[0002] During the planting and harvesting of pineapples, their leaves need to be cut and trimmed. This facilitates field management and fruit harvesting. Currently, pineapple leaf cutting in China mainly relies on manual hand-held cutting tools, which is not only extremely inefficient but also labor-intensive and costly for farmers, making it unsuitable for large-scale, modern pineapple cultivation. Existing technologies only offer a few stem and leaf cutting devices for single crops; there are no cutting devices specifically designed for pineapple growth characteristics, and no dedicated pineapple leaf cutting machinery capable of simultaneous multi-row cutting and self-propelled movement. Some general-purpose stem and leaf cutting devices have complex structures, inconvenient row spacing adjustment, and cannot adapt to pineapple planting row spacing. Furthermore, their low cutting precision easily damages pineapple fruit and roots, thus hindering their widespread use in pineapple orchards. Therefore, developing a simple, easy-to-operate, self-propelled pineapple leaf cutter capable of simultaneous multi-row cutting is crucial for mechanizing pineapple field operations and has significant practical application value. Summary of the Invention
[0003] Purpose of the invention The purpose of this invention is to provide a multi-row self-propelled pineapple leaf cutting machine, which solves the technical problems of existing pineapple leaf cutting relying on manual labor, low efficiency, and lack of dedicated multi-row self-propelled cutting equipment, realizes the mechanization of pineapple leaf cutting, enables simultaneous cutting of multiple rows, improves work efficiency, and reduces labor costs. Technical solution
[0004] To achieve the above objectives, the present invention provides the following technical solution: a multi-row self-propelled pineapple leaf cutter, comprising a saw blade, a drive motor, a frame, a carriage, and a walking system; the frame is fixedly installed on the upper part of the carriage, serving as the mounting base for each working component; the drive motor and the saw blade are both mounted on the frame, with the drive motor providing power for the rotational cutting of the saw blade; the walking system is installed on the lower part of the carriage, providing power for the self-propelled movement of the entire machine, enabling continuous advancement of the cutting operation; the saw blade consists of four blades, arranged symmetrically in two groups of two blades each, with each group corresponding to the cutting of one row of pineapple leaves, thus achieving the function of simultaneously cutting two rows of pineapple leaves.
[0005] Furthermore, the two drive motors are connected to the saw blade via gear transmission, chain transmission, or belt transmission to ensure the stability of power transmission. Each saw blade can be configured with an independent two drive motors to achieve independent speed adjustment and driving of a single saw blade. Alternatively, multiple saw blades can be linked by the same two drive motors through a transmission assembly, simplifying the equipment structure.
[0006] Furthermore, the three frames are high-strength rigid frame structures made of metal, which have good load-bearing capacity and stability; the three frames are provided with adjustment grooves, and the one saw blade and two drive motors can move along the adjustment grooves to realize flexible adjustment of the saw blade spacing, adapt to the row spacing requirements of pineapples in different regions and with different planting specifications, and improve the versatility of the equipment.
[0007] Furthermore, the fourth frame is the main load-bearing body of the whole machine, and a frame structure is formed by welding or bolting. Its upper part is fixedly connected to the third frame by bolts, which facilitates the disassembly and installation of the frame; its lower part is detachably connected to the fifth walking system. When the fifth walking system fails, it can be quickly disassembled and repaired, reducing the maintenance cost of the equipment.
[0008] Furthermore, the 5-walking system includes walking wheels, a walking drive motor, and a transmission assembly. The walking drive motor can be an independent power source or share the same power source with the 2 drive motors. The overall walking speed can be adjusted through the control terminal to ensure that the walking speed matches the cutting speed, avoiding incomplete cutting due to walking too fast or affecting work efficiency due to walking too slow.
[0009] Furthermore, the cutting height of each of the four saw blades can be independently adjusted to suit the plant height of pineapples at different growth stages, avoiding damage to the pineapple fruit and roots during the cutting process and ensuring the safety and rationality of the cutting operation. Beneficial effects
[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention is the first to design a multi-row self-propelled special equipment adapted for pineapple leaf cutting, breaking the current situation where pineapple leaf cutting relies on manual labor, filling the gap in mechanized pineapple leaf cutting equipment, and providing a mechanized operation solution for large-scale pineapple planting.
[0011] 2. The structure of four saw blades arranged in groups allows for the simultaneous cutting of two rows of pineapple leaves. Compared to manual cutting, the work efficiency is increased several times, which greatly reduces the labor intensity and labor costs for fruit farmers.
[0012] 3. The entire machine is driven by a 5-walking system for self-propelled movement, eliminating the need for manual pushing and enabling continuous cutting operations. This ensures the consistency and continuity of the cutting work and improves field operation efficiency.
[0013] 4. The frame is equipped with an adjustable slide, which can flexibly adjust the spacing and cutting height of the saw blades to adapt to different planting row spacings and different growth stages of pineapples. The equipment is highly versatile and has a wide range of applications.
[0014] 5. The overall structure consists of 1 saw blade, 2 drive motor, 3 frame, 4 chassis and 5 walking system. The structure is simple and compact, and the components are detachably connected, which facilitates installation, transportation, maintenance and replacement. The equipment has low operating and maintenance costs and is easy to promote and use in pineapple growing areas. Attached Figure Description
[0015] Figure 1 This is a top view of the multi-row self-propelled pineapple leaf cutter described in this invention; Figure 2 This is a side view of the multi-row self-propelled pineapple leaf cutter of the present invention; The markings in the diagram are: 1-saw blade, 2-drive motor, 3-frame, 4-chassis, 5-walking system. Detailed Implementation
[0016] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.
[0017] In the description of this invention, it should be noted that the terms "upper part", "lower part", "both sides", "one end", "the other end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "fixing," etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can enable communication between the internal parts of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0019] This embodiment provides a multi-row self-propelled pineapple leaf cutter, including 1 saw blade, 2 drive motors, 3 frame, 4 carriage, and 5 walking system. The 3 frame is made of stainless steel rigid frame and is fixed to the upper part of the 4 carriage by bolts. The 4 carriage is a carbon steel welded frame, which serves as the load-bearing foundation of the whole machine. The 3 frame has symmetrical adjustment grooves on both sides. The four 1 saw blades are divided into two groups. The two 1 saw blades in each group are installed in the adjustment grooves through a rotating shaft and can move left and right along the groove to adjust the spacing between the saw blades to adapt to the row spacing of pineapple planting. Each group of saw blades corresponds to one 2 drive motor. The 2 drive motors are fixed to the 3 frame by bolts, and the output shaft of the 2 drive motor is connected to the rotating shaft of the 1 saw blade through chain drive to provide power for the rotation and cutting of the 1 saw blade.
[0020] The 5-walking system is installed on the lower part of the 4-frame and includes two walking wheels, a walking drive motor and a transmission assembly. The walking wheels are located on both sides of the bottom of the 4-frame, and the walking drive motor is fixed inside the 4-frame. The output shaft of the walking drive motor is connected to the rotating shaft of the walking wheel through a gear transmission, providing self-propelled movement power for the whole machine. The walking drive motor and the 2-drive motor are both connected to an external control box. The cutting speed and walking speed can be adjusted separately through the control box to ensure that the walking speed matches the cutting speed.
[0021] Each of the four saw blades has a height adjustment knob on its rotating shaft. By rotating the knob, the cutting height of the saw blade can be adjusted to suit the height of pineapple plants at different growth stages, thus avoiding damage to the pineapple fruit and roots during the cutting process.
[0022] In actual operation, the multi-row self-propelled pineapple leaf cutter of this embodiment first adjusts the spacing between the two sets of saw blades according to the row spacing of the pineapple planting by adjusting the sliding groove on the frame 3. Then, it adjusts the cutting height of the saw blades according to the height of the pineapple plants. Subsequently, it starts the drive motors of the two drive motors and the walking drive motor of the five walking system. The drive motor drives the saw blades to rotate at high speed, and the walking drive motor drives the walking wheels to move at a constant speed. The whole machine is self-propelled and the four saw blades simultaneously rotate and cut the leaves of two rows of pineapples, realizing the mechanized and continuous cutting operation of pineapple leaves.
[0023] The multi-row self-propelled pineapple leaf cutter of the present invention has a simple structure, is easy to operate, and has high work efficiency. It can effectively replace manual cutting, reduce labor costs, and meet the field operation needs of large-scale pineapple planting. It has significant practical value and market promotion prospects.
Claims
1. A multi-row self-propelled pineapple leaf cutter, characterized in that, It includes 1 saw blade, 2 drive motors, 3 frame, 4 carriage, and 5 walking system; the 3 frame is fixedly installed on the upper part of the 4 carriage, the 2 drive motors and 1 saw blade are both installed on the 3 frame, and the 5 walking system is installed on the lower part of the 4 carriage, providing self-propelled mobility for the whole machine; the 1 saw blade is four in number and the four 1 saw blades are arranged symmetrically to realize the function of cutting two rows of pineapple leaves at the same time.
2. The multi-row self-propelled pineapple leaf cutter according to claim 1, characterized in that, The two drive motors are connected to the saw blade to provide power for the rotational cutting of the saw blade. Each saw blade is driven by an independent two drive motor, or multiple saw blades are driven by the same two drive motors in a coordinated manner.
3. The multi-row self-propelled pineapple leaf cutter according to claim 1, characterized in that, The three frames are rigid frame structures used to fix two drive motors and one saw blade, and the spacing of the saw blade can be adjusted according to the row spacing of pineapple planting to adapt to different pineapple planting specifications.
4. The multi-row self-propelled pineapple leaf cutter according to claim 1, characterized in that, The fourth frame serves as the load-bearing foundation for the entire machine. Its upper part is fixedly connected to the third frame, and its lower part is detachably connected to the fifth walking system, facilitating the maintenance and replacement of the fifth walking system.
5. The multi-row self-propelled pineapple leaf cutter according to claim 1, characterized in that, The five-walking system includes walking wheels and a walking drive assembly. The walking drive assembly is linked with an external control terminal or two drive motors to achieve uniform self-movement of the whole machine, ensuring the continuity and consistency of the cutting operation.
6. The multi-row self-propelled pineapple leaf cutter according to any one of claims 1-5, characterized in that, The four saw blades are divided into two groups, with two saw blades in each group corresponding to the cutting of a row of pineapple leaves. The spacing between the two groups of saw blades matches the row spacing of the pineapple planting.