Leaf trimming device for planting pineapples

By designing a mobile vehicle that includes pruning and shredding components, the problems of low efficiency and poor safety of existing pineapple pruning devices have been solved, achieving efficient and safe pineapple leaf pruning and shredding, and improving the pineapple growing environment.

CN224205782UActive Publication Date: 2026-05-08HAINAN QITIAN AGRICULTURAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HAINAN QITIAN AGRICULTURAL TECHNOLOGY CO LTD
Filing Date
2025-06-10
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

Existing pineapple pruning devices can only prune one plant at a time, which is inefficient, inconvenient to move, lacks safety protection, and the accumulation of pruned leaves affects the growth of pineapples.

Method used

Design a mobile vehicle body that includes a trimming component and a shredding component. The trimming height is adjusted by using a lifting hydraulic rod and a telescopic hydraulic rod. It combines a smooth blade and a serrated blade for dual cutting. The shredding component collects and shreds the blades. The wheels increase the contact area to improve stability, and the baffles prevent splashing.

Benefits of technology

It improved pruning efficiency, reduced the impact of leaf accumulation on pineapple growth, enhanced safety and stability, and ensured pruning quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a pineapple planting leaf pruning device, and relates to the technical field of pineapple planting, the pineapple planting leaf pruning device comprises a mobile vehicle body, a pruning assembly is arranged above the mobile vehicle body, the pruning assembly comprises a base installed on the top of the mobile vehicle body, and a lifting rod hydraulic rod is installed on the upper portion of the base; a supporting plate is mounted at the top end of the lifting rod hydraulic rod, a mounting frame is mounted on the upper portion of the supporting plate, a telescopic hydraulic rod is mounted in the mounting frame, and a connecting rod is welded to the tail end of the telescopic hydraulic rod; by arranging the pruning assembly, a lifting rod hydraulic rod is used for pushing a supporting plate to ascend and descend, so that the pruning height of a smooth attached blade and a sawtooth blade is adjusted, and the requirement for pruning the heights of pineapple plant leaves with different heights is met; the smooth attached blade and the sawtooth blade are adjusted to move towards the pineapple plant to a proper working position, and the pruning efficiency and effect are improved.
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Description

Technical Field

[0001] This utility model relates to the field of pineapple cultivation technology, and in particular to a device for pruning leaves when growing pineapples. Background Technology

[0002] A pineapple leaf pruning device is an agricultural machine specifically designed for pineapple cultivation. It is primarily used for the efficient and precise pruning of pineapple plant leaves, solving the problems of time-consuming, labor-intensive, and costly manual pruning. Its core function is to cut, collect, or shred pineapple leaves through mechanical structures or intelligent control, making it suitable for all stages of pineapple cultivation.

[0003] A search revealed that the document with publication number "CN221240957U" mentions that "this utility model relates to the field of pineapple cultivation technology and discloses a leaf-pruning device for field-grown pineapples. This leaf-pruning device for field-grown pineapples includes a pruning device body, and the pruning device body has a pruning structure inside." In use, the mounting rod drives the first clamping seat and the second clamping seat to move rapidly upwards through the assembly structure. When the first clamping seat and the second clamping seat move upwards, the annular cutting blade on them cuts the leaves surrounding the pineapple tree, allowing the leaves to fall off quickly, thus completing the leaf pruning efficiently.

[0004] However, most existing devices can only prune one pineapple at a time, each pruning requires different operations, and they are inconvenient to move around in the field, resulting in low overall pruning efficiency. During the pruning process, there is a lack of protection against flying debris generated when the blades cut the pineapple leaves, which poses a safety hazard to the pruning personnel. Furthermore, the pruned pineapple leaves are not properly treated, and the remaining leaves accumulate at the bottom of the pineapple plant, which can easily have an adverse effect on the subsequent growth of the pineapple. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a pineapple pruning leaf device, which aims to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A pineapple leaf trimming device includes a mobile vehicle body. A trimming assembly is mounted on top of the mobile vehicle body. The trimming assembly includes a base mounted on the top of the mobile vehicle body. A lifting hydraulic rod is mounted on the upper part of the base. A support plate is mounted on the top of the lifting hydraulic rod. A mounting frame is mounted on the upper part of the support plate. A telescopic hydraulic rod is installed inside the mounting frame. A connecting rod is welded to the end of the telescopic hydraulic rod. A motor is connected to the end of the connecting rod. A cutter disc is welded to the end of the motor. A smooth blade is mounted on the surface of the cutter disc. A serrated blade is mounted on the outer side of the smooth blade. A shredding assembly is mounted on the lower part of the mobile vehicle body. Wheels are mounted on the bottom middle part of the mobile vehicle body.

[0008] Furthermore, a fixing block is welded to the right side surface of the base, and a fixing rod is welded inside the fixing block. A lifting block is welded to the right side surface of the support plate. The support plate and the base form a lifting structure through the lifting rod and hydraulic rod. The fixing rod and the lifting block are connected by a sleeve. The lifting block moves up and down simultaneously with the support plate.

[0009] Furthermore, the mounting frame and the support plate are welded together, and the connecting rod forms a telescopic structure with the mounting frame through a telescopic hydraulic rod. Two sets of telescopic hydraulic rods are provided, and the telescopic hydraulic rods are symmetrically arranged about the central axis of the moving vehicle body.

[0010] Furthermore, the smooth attached blade edge has a flat structure, the serrated blade edge has a serrated structure, and the smooth attached blade edge and the serrated blade edge rotate counterclockwise.

[0011] Furthermore, a movable baffle is provided on the surface of the connecting rod, and a fixed baffle is welded to the top edge of the moving vehicle body. The movable baffle moves in and out simultaneously with the connecting rod. The top of the fixed baffle is higher than the connecting rod, and the fixed baffle partially covers the outer side of the smooth attachment blade and the serrated blade.

[0012] Furthermore, the crushing assembly includes a fixed partition installed at the bottom of the mobile vehicle body. A fixed blade rod is installed on the inner side of the fixed partition. There are two sets of fixed blade rods. Four sets of crushing blades are evenly installed on the surface of the fixed blade rods. The four sets of crushing blades are staggered from high to low. The fixed partition opens at an angle toward the crushing blades.

[0013] Furthermore, the wheels are provided in two sets, with the bottom of the wheels lower than the crushing assembly.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting up a pruning assembly, the support plate is raised and lowered using a lifting hydraulic rod, thereby adjusting the pruning height of the smooth blade and serrated blade. This is suitable for pruning pineapple leaves of different heights. At the same time, by controlling the length of the telescopic hydraulic rod, the connecting rod is pushed outward, adjusting the smooth blade and serrated blade to move towards the pineapple plant to a suitable working position, facilitating cutting with the smooth blade and serrated blade. Furthermore, by utilizing the different patterns of the smooth blade and serrated blade, each pineapple leaf is double-cut, improving pruning efficiency and effectiveness.

[0016] 2. By setting up a crushing component, a fixed partition is used to receive fallen pineapple leaves and provide some support. The fixed partition is tilted and opens towards the crushing blades, guiding the pineapple leaves to move towards the crushing blades. The crushing blades crush the pineapple leaves, and then the pineapple leaves fall to the ground under gravity. Crushing the pineapple leaves can accelerate the decay of the leaves and reduce the accumulation of pruned pineapple leaves that may block the roots of the pineapple plant, thus avoiding affecting the normal growth of the pineapple. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall appearance structure of a pineapple planting and leaf trimming device according to the present invention;

[0019] Figure 2 This is a schematic diagram of the cooperative structure of the base, lifting rod, hydraulic rod, and fixed tool rod of this utility model;

[0020] Figure 3 This is a schematic diagram of the cooperative structure of the telescopic hydraulic rod, the smooth auxiliary blade, and the serrated blade of this utility model.

[0021] Figure 4 This is a schematic diagram of the crushing component structure of this utility model;

[0022] Figure 5 This is a schematic diagram of the connecting rod, fixed blade, and crushing blade of this utility model.

[0023] Numbered in the diagram: 1. Moving vehicle body; 2. Trimming assembly; 201. Base; 202. Lifting rod hydraulic rod; 203. Support plate; 204. Fixing block; 205. Fixing rod; 206. Lifting block; 207. Mounting bracket; 208. Telescopic hydraulic rod; 209. Connecting rod; 210. Motor; 211. Cutter disc; 212. Smooth blade; 213. Serrated blade; 214. Moving baffle; 215. Fixed baffle; 3. Crushing assembly; 301. Fixed partition; 302. Fixed blade bar; 303. Crushing blade; 4. Wheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0025] like Figure 1-5 As shown, this utility model provides a technical solution: a pineapple leaf trimming device, including a mobile vehicle body 1, a trimming component 2 disposed on the top of the mobile vehicle body 1, the trimming component 2 including a base 201 mounted on the top of the mobile vehicle body 1, a lifting hydraulic rod 202 mounted on the upper part of the base 201, a support plate 203 mounted on the top of the lifting hydraulic rod 202, an mounting frame 207 mounted on the upper part of the support plate 203, a telescopic hydraulic rod 208 mounted inside the mounting frame 207, a connecting rod 209 welded to the end of the telescopic hydraulic rod 208, a motor 210 connected to the end of the connecting rod 209, a cutter disc 211 welded to the end of the motor 210, a smooth blade 212 mounted on the surface of the cutter disc 211, a serrated blade 213 mounted on the outer side of the smooth blade 212, a crushing component 3 mounted on the lower part of the mobile vehicle body 1, and wheels 4 mounted on the bottom middle part of the mobile vehicle body 1.

[0026] like Figure 1-5 As shown, there are two sets of wheels 4. The bottom of the wheels 4 is lower than the crushing component 3. By increasing the diameter and thickness of the wheels 4, the contact area with the ground is increased, which prevents the device from sinking into the soil due to poor ground conditions during the trimming process. At the same time, the two sets of wheels 4 allow the trimmer to push the device smoothly, which improves the stability of the device.

[0027] like Figure 1-5As shown, the pulverizing component 3 includes a fixed partition 301 installed at the bottom of the mobile vehicle body 1. A fixed blade 302 is installed on the inner side of the fixed partition 301. The fixed blade 302 is provided in two sets, and four sets of pulverizing blades 303 are evenly installed on the surface of the fixed blade 302. The four sets of pulverizing blades 303 are arranged in a staggered manner from high to low. The fixed partition 301 is inclined and opens towards the pulverizing blades 303. After the leaves are cut, the pineapple leaves fall into the fixed partition 301. The fixed partition 301 guides and supports the pineapple leaves to move towards the pulverizing blades 303. The pulverizing blades 303 rotate to pulverize the pineapple leaves. Subsequently, the pulverized pineapple leaves fall naturally to the ground surface under gravity. At the same time, the staggered arrangement of the pulverizing blades 303 can increase the contact area between the pulverizing blades 303 and the pineapple leaves, improve the efficiency and effect of pulverizing the leaves, and allow the pulverized pineapple leaves to decompose faster, providing nutrients for the subsequent pineapple plants. At the same time, it avoids the accumulation of pruned leaves at the bottom of the pineapple plants, which would affect the subsequent growth of the pineapple.

[0028] like Figure 1-5 As shown, the smooth blade 212 has a flat cutting edge, while the serrated blade 213 has a serrated cutting edge. The smooth blade 212 and the serrated blade 213 rotate counterclockwise. The serrated blade 213 cuts the pineapple leaves before the smooth blade 212. The serrated blade 213 has a better cutting effect on pineapple leaves with thick leaves and tough fibers. The smooth blade 212 is used to complete the secondary cutting after the serrated blade 213 cuts, reducing the residual fiber pulling on the leaves, improving the trimming efficiency, and ensuring the trimming quality of the leaves.

[0029] like Figure 1-5 As shown, a fixing block 204 is welded to the right side surface of the base 201, and a fixing rod 205 is welded inside the fixing block 204. A lifting block 206 is welded to the right side surface of the support plate 203. The support plate 203 forms a lifting structure with the base 201 through the lifting rod hydraulic rod 202. The fixing rod 205 and the lifting block 206 are connected by a sleeve. The lifting block 206 moves up and down simultaneously with the support plate 203. In use, by adjusting the length of the lifting rod hydraulic rod 202, the support plate 203 moves up and down, thereby driving the smooth blade 212 and the serrated blade 213 to a suitable height, which can trim pineapple leaves of different heights. At the same time, the fixing rod 205 can restrict the horizontal direction of the support plate 203 through the lifting block 206 when the support plate 203 moves up and down, ensuring the stability of the smooth blade 212 and the serrated blade 213 during rotation, and improving the flexibility of the device.

[0030] like Figure 1-5As shown, the mounting frame 207 and the support plate 203 are welded together. The connecting rod 209 forms a telescopic structure with the mounting frame 207 through the telescopic hydraulic rod 208. There are two sets of telescopic hydraulic rods 208, which are symmetrically arranged about the central axis of the moving vehicle 1. When it is necessary to prune pineapple leaves with different plant spacing, the telescopic hydraulic rod 208 can be extended to push the connecting rod 209 to move outward. Finally, the smooth blade 212 and the serrated blade 213 are moved to the appropriate working position to ensure that the blades can accurately cut pineapple leaves at different positions, thereby improving the adaptability of the device to pruning pineapple plants under different planting conditions.

[0031] like Figure 1-5 As shown, a movable baffle 214 is provided on the surface of the connecting rod 209, and a fixed baffle 215 is welded to the top edge of the moving vehicle body 1. The movable baffle 214 moves and extends simultaneously with the connecting rod 209. The top of the fixed baffle 215 is higher than the connecting rod 209. The fixed baffle 215 partially covers the outside of the smooth attachment blade 212 and the serrated blade 213. The movable baffle 214 moves with the connecting rod 209 when the telescopic hydraulic rod 208 extends. It can prevent pineapple leaves and leaf fragments from splashing when the blade is cutting, avoiding contamination and damage to the trimmer and the device. After the device is used, the telescopic hydraulic rod 208 is controlled to retract, causing the smooth attachment blade 212 and the serrated blade 213 to fit against both sides of the device. At the same time, the fixed baffle 215 can partially cover and store the smooth attachment blade 212 and the serrated blade 213, preventing damage to the blade or safety threats to the trimmer due to improper management and storage of the device.

[0032] Working principle: Move the device to the working position. Adjust the height of the lifting hydraulic rod 202 according to the plant height, thereby moving the mounting frame 207 up and down. Move the smooth blade 212 and serrated blade 213 to the predetermined pineapple leaf trimming height. Then adjust the length of the telescopic hydraulic rod 208, pushing the connecting rod 209 outward to move the smooth blade 212 and serrated blade 213 to the appropriate position. Then start the motor 210. The rotation of the motor 210 drives the cutter head 211 to rotate, causing the smooth blade 212 and serrated blade 213 to rotate and cut the pineapple leaves. The cut pineapple leaves fall inside the fixed partition 301. The pulverizing blade 303 is activated to rotate and pulverize the pineapple leaves. After pulverization, the pineapple leaves fall naturally to the ground. During the pruning process, the pruner can move the device by pushing the handle, causing the smooth blade 212 and the serrated blade 213 to cut forward, achieving a continuous pruning effect for the pineapple leaves. During the pruning process, the baffle 214 is moved to block the flying pulverized blades. After the work is completed, the lifting hydraulic rod 202 and the telescopic hydraulic rod 208 are retracted to their original positions, and the fixed baffle 215 is wrapped around the outside of the smooth blade 212 and the serrated blade 213. This completes the use of a pineapple pruning leaf pruning device.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pineapple pruning device, comprising a mobile vehicle (1), characterized in that: A trimming assembly (2) is provided above the mobile vehicle body (1). The trimming assembly (2) includes a base (201) installed on the top of the mobile vehicle body (1). A lifting hydraulic rod (202) is installed on the upper part of the base (201). A support plate (203) is installed at the top of the lifting hydraulic rod (202). A mounting bracket (207) is installed on the upper part of the support plate (203). A telescopic hydraulic rod (208) is installed inside the mounting bracket (207). A connecting rod (209) is welded to the end of the hydraulic rod (208), and a motor (210) is connected to the end of the connecting rod (209). A cutter disc (211) is welded to the end of the motor (210). A smooth blade (212) is installed on the surface of the cutter disc (211), and a serrated blade (213) is installed on the outer side of the smooth blade (212). A crushing assembly (3) is installed on the lower part of the mobile vehicle body (1), and a wheel (4) is installed at the bottom middle part of the mobile vehicle body (1).

2. The pineapple leaf pruning device according to claim 1, characterized in that, A fixing block (204) is welded to the right side surface of the base (201), and a fixing rod (205) is welded inside the fixing block (204). A lifting block (206) is welded to the right side surface of the support plate (203). The support plate (203) forms a lifting structure with the base (201) through the lifting rod hydraulic rod (202). The fixing rod (205) and the lifting block (206) are connected by a sleeve. The lifting block (206) moves up and down simultaneously with the support plate (203).

3. The pineapple leaf pruning device according to claim 1, characterized in that, The mounting bracket (207) and the support plate (203) are welded together. The connecting rod (209) forms a telescopic structure with the mounting bracket (207) through the telescopic hydraulic rod (208). Two sets of the telescopic hydraulic rod (208) are provided, and the telescopic hydraulic rod (208) is symmetrically arranged about the central axis of the moving vehicle body (1).

4. The pineapple leaf pruning device according to claim 1, characterized in that, The smooth blade (212) has a flat cutting edge, and the serrated blade (213) has a serrated cutting edge. The smooth blade (212) and the serrated blade (213) rotate counterclockwise.

5. A pineapple leaf-pruning device according to claim 1, characterized in that, The surface of the connecting rod (209) is provided with a movable baffle (214), and the top edge of the moving vehicle body (1) is welded with a fixed baffle (215). The movable baffle (214) moves in extension and retraction simultaneously with the connecting rod (209). The top of the fixed baffle (215) is higher than the connecting rod (209), and the fixed baffle (215) partially covers the outer side of the smooth auxiliary blade (212) and the serrated blade (213).

6. The pineapple leaf pruning device according to claim 1, characterized in that, The crushing assembly (3) includes a fixed partition (301) installed at the bottom of the mobile vehicle body (1). A fixed blade rod (302) is installed on the inner side of the fixed partition (301). There are two sets of fixed blade rods (302). Four sets of crushing blades (303) are evenly installed on the surface of the fixed blade rod (302). The four sets of crushing blades (303) are arranged in a staggered manner from high to low. The fixed partition (301) is inclined to open towards the crushing blades (303).

7. A pineapple leaf pruning device according to claim 1, characterized in that, The wheels (4) are provided in two sets, and the bottom of the wheels (4) is lower than the crushing component (3).

Citation Information

Patent Citations

  • Leaf trimming device for field planting of pineapples

    CN221240957U