A device for removing the spines of date palm petioles

Abstract

The utility model provides a kind of date leaf stalk thorn removing device, comprising: connecting rod, drawstring and two cutting knives;Connecting rod is equipped with rotating hole along length direction, connecting rod is equipped with reset spring, the first end of reset spring is fixedly connected with the side surface of connecting rod;Drawstring is located inside connecting rod, drawstring is pulled along the length direction of connecting rod;Cutting knife includes cutting part and connecting part, connecting part is rotationally arranged in rotating hole, the two sides of connecting part are equipped with first connecting rod and second connecting rod, reset spring is connected with first connecting rod, the top end of drawstring is connected with second connecting rod, two cutting knives are rotationally arranged on the two sides of connecting rod respectively, when drawstring is pulled to the bottom end of connecting rod, drive two cutting knives to rotate from two cutting parts being opposite state to two cutting parts being parallel state. By drawstring pulling connecting part rotates around rotating hole, so that two cutting knives are respectively adhered to the side surface of leaf stalk, and are hooked on the thorn on two sides.

Description

Technical Field

[0001] This utility model relates to the field of agricultural and horticultural tools, and in particular to a device for removing thorns from date palm petioles. Background Technology

[0002] The date palm (Phoenix dactylifera L.) is a perennial evergreen tree belonging to the genus Phoenix in the family Arecaceae. Its fruit, the date, is a nutritious and distinctive berry. Date palms are widely distributed in tropical and subtropical arid regions of the Middle East and North Africa. Especially in Arab countries such as Saudi Arabia, the UAE, Iraq, and Egypt, they are considered "desert bread" and "tree of life," serving not only as an important economic crop but also as a symbol of local tradition and agricultural livelihood. In recent years, with the deepening of agricultural cooperation under the Belt and Road Initiative, the date palm industry has shown promising prospects for introduction and development in my country. Currently, there are scattered plantings in Yunnan, Hainan, and Fujian provinces, and my country has introduced over 25,000 superior date palm varieties. Systematic trials and adaptation studies are being conducted in Hainan, Yunnan, Guizhou, Sichuan, Guangxi, and Fujian, aiming to promote the industrialization of dates in suitable growing areas of my country.

[0003] However, the operational difficulties posed by the petiole structure during the daily cultivation and management of date palm trees have remained unresolved. The petioles of date palms are long and sturdy, typically bearing clusters of sharp, hard thorns 5–15 cm long on both sides. These thorns are not only dense and strong but also irregularly oriented, making them highly susceptible to causing severe scratches or punctures to workers during actual agricultural operations—such as artificial pollination, fruit harvesting, tree shaping, pruning, and fruit bagging—significantly increasing operational risks and protection costs. Furthermore, the dense, overlapping, and interwoven leaves further hinder manual access to the base of the petiole, making traditional ground-based operations difficult, while working at heights carries the risk of falls.

[0004] Currently, in various date palm producing areas, whether it's traditional small-scale farming or large-scale plantations, the removal of leaf thorns still relies heavily on manual labor using traditional tools such as sickles, pruning shears, and hand saws. While these tools are simple in structure and readily available, the dense, interwoven leaves and complex leaf thorn structure of date palms make them difficult to maneuver around the dense foliage and accurately reach the deep base of the leaf thorn. This results in incomplete cleaning, low efficiency, and extreme inconvenience. Utility Model Content

[0005] Therefore, it is necessary to provide a date palm petiole thorn removal device to address the aforementioned technical problems.

[0006] A device for removing thorns from date palm petioles includes: a connecting rod, a pull rope, and two cutting blades;

[0007] A rotating hole is provided on the side of the top end of the connecting rod along the length direction, and a return spring is also provided on the side of the connecting rod, with the first end of the return spring fixedly connected to the side of the connecting rod.

[0008] The pull rope is disposed inside the connecting rod, and the bottom end of the pull rope protrudes from the bottom end of the connecting rod. The pull rope can be pulled along the length of the connecting rod.

[0009] The cutting blade includes a cutting part and a connecting part. The connecting part and the cutting part are generally sickle-shaped. The connecting part is rotatably disposed in the rotating hole. A first connecting rod and a second connecting rod are respectively disposed on both sides of the connecting part. The second end of the return spring is connected to the first connecting rod. The top end of the pull rope is connected to the second connecting rod. The two cutting blades are respectively rotatably disposed on both sides of the connecting rod. When the pull rope is pulled toward the bottom end of the connecting rod, it drives the two cutting blades to rotate from the two cutting parts being in a back-to-back state to the two cutting parts being in a parallel state.

[0010] In one embodiment, a groove is formed on the side of the connecting rod along its length, and a sliding block is slidably disposed in the groove. The sliding block is fixedly connected to the pull rope, and the side of the sliding block protrudes from the groove. A rotating hole passes through the sliding block in the vertical direction, and a control rod is provided on the inner wall of the rotating hole. A spiral groove is formed on the surface of the connecting part in a spiral shape along its length, and the control rod is inserted into the spiral groove. A limiting ring is also provided on the connecting rod to restrict the movement of the connecting part along the length direction of the connecting rod, and the connecting part is rotatably disposed within the limiting ring.

[0011] In one embodiment, the bottom end of the connecting rod is rotatably provided with a winding wheel and a drive gear, the bottom end of the pull rope is wound around the winding wheel, the winding wheel is coaxially connected with the drive gear, and the bottom end of the connecting rod is slidably provided with a drive rack along the length direction, the drive rack being meshed with the drive gear.

[0012] In one embodiment, a tension spring is provided inside the connecting rod, and the tension spring is fixedly connected to the top end of the drive rack.

[0013] In one embodiment, the connecting rod is provided with a limiting pawl for internal rotation, and a torsion spring is provided on the rotating shaft of the limiting pawl. The limiting pawl engages with the drive rack to limit the unidirectional movement of the drive rack and prevent the pull rope on the winding wheel from coming loose.

[0014] In one embodiment, a spring is provided between the two first links, and the midpoint of the spring is fixedly connected to the top end of the pull rope.

[0015] In one embodiment, the bottom end of the connecting rod is provided with a handle, and the surface of the handle is provided with anti-slip texture.

[0016] In one embodiment, a moving groove is provided on the handle along its length, and a hook rod is provided at the bottom end of the drive rack. The hook rod passes through the moving groove and protrudes from the surface of the handle.

[0017] In one embodiment, the end of the hook rod is provided with a clamping groove for clamping into the gap between fingers.

[0018] In one embodiment, a baffle is provided at the bottom end of the handle, the baffle protruding from the side of the connecting rod. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure in one embodiment;

[0020] Figure 2 This is a schematic diagram of the cutting state in one embodiment;

[0021] Figure 3 for Figure 2 An enlarged schematic diagram of part A in the middle;

[0022] Figure 4 This is a schematic diagram showing a partial cross-section in one embodiment;

[0023] Figure 5 for Figure 4 Enlarged schematic diagram of part B in the middle;

[0024] Figure 6 for Figure 2 An enlarged schematic diagram of section C.

[0025] 100. Connecting rod; 110. Rotating hole; 111. Control rod; 120. Return spring; 130. Slide groove; 140. Sliding block; 150. Winding wheel; 160. Drive gear; 170. Drive rack; 171. Holding spring; 172. Hook rod; 173. Clamping groove; 180. Limiting claw; 190. Handle; 191. Anti-slip texture; 192. Baffle; 193. Moving groove; 200. Cutting blade; 210. Cutting part; 220. Connecting part; 221. First connecting rod; 222. Second connecting rod; 223. Spiral groove; 230. Elastic spring; 240. Restricting ring; 300. Pull rope. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0027] like Figures 1-5 As shown, a date palm petiole thorn removal device is provided, including: a connecting rod 100, a pull rope 300 and two cutting blades 200;

[0028] A rotating hole 110 is provided on the side of the top end of the connecting rod 100 along the length direction. A return spring 120 is also provided on the side of the connecting rod 100. The first end of the return spring 120 is fixedly connected to the side of the connecting rod 100.

[0029] The pull rope 300 is disposed inside the connecting rod 100, and the bottom end of the pull rope 300 protrudes from the bottom end of the connecting rod 100. The pull rope 300 can be pulled along the length direction of the connecting rod 100.

[0030] The cutting blade 200 includes a cutting part 210 and a connecting part 220. The connecting part 220 and the cutting part 210 are generally sickle-shaped. The connecting part 220 is rotatably disposed in the rotating hole 110. A first connecting rod 221 and a second connecting rod 222 are respectively disposed on both sides of the connecting part 220. The second end of the return spring 120 is connected to the first connecting rod 221. The top end of the pull rope 300 is connected to the second connecting rod 222. The two cutting blades 200 are rotatably disposed on both sides of the connecting rod 100. When the pull rope 300 is pulled toward the bottom end of the connecting rod 100, it drives the two cutting blades 200 to rotate from the two cutting parts 210 being in a back-to-back state to the two cutting parts 210 being in a parallel state.

[0031] In this embodiment, in the initial non-operational state, the two cutting blades 200 are in a back-to-back position, and the first connecting rods 221 of the two cutting blades 200 are in a parallel position. The connecting part 220 is rotatably inserted into the rotating hole 110. The first connecting rod 221 and the second connecting rod 222 are located on both sides of the connecting part 220, and the two ends of the return spring 120 are respectively fixed to the ends of the two first connecting rods 221. The top end of the pull rope 300 is fixedly connected to the second connecting rod 222. When the device is passed through the blade to the base of the stalk to be cut, the bottom end of the pull rope 300 is pulled. The top end of the pull rope 300 pulls the first connecting rod 221 of the two cutting blades 200, driving the cutting blades 200 to rotate around the rotating hole 110, so that the two cutting parts 210 rotate from a back-to-back state to a parallel state. At this time, the return spring 120 is in a stretched state. When the cutting part 210 abuts against the thorn on the stalk, the connecting rod 100 is pulled, causing the top end of the connecting rod 100 to move along the direction of the stalk, and the cutting part 210 cuts the thorn. The two cutting blades 200 rotate in opposite directions, with rotation angles ranging from 0 to 90 degrees. The larger the diameter of the leaf stalk, the smaller the rotation angle of the two cutting blades 200; conversely, the smaller the diameter, the larger the rotation angle. After releasing the pull rope 300, the two cutting blades 200 rotate in opposite directions under the elastic force of the return spring 120, returning to their initial state.

[0032] like Figures 2-5 As shown, in one embodiment, the side of the connecting rod 100 is provided with a groove 130 along the length direction, and a sliding block 140 is slidably disposed in the groove 130. The sliding block 140 is fixedly connected to the pull rope 300, and the side of the sliding block 140 protrudes from the groove 130. The rotating hole 110 passes through the sliding block 140 in the vertical direction, and a control rod 111 is provided on the inner wall of the rotating hole 110. The surface of the connecting part 220 is provided with a spiral groove 223 in a spiral shape along the length direction, and the control rod 111 is inserted into the spiral groove 223. The connecting rod 100 is also provided with a limiting ring 240 for restricting the movement of the connecting part 220 along the length direction of the connecting rod 100, and the connecting part 220 is rotatably disposed in the limiting ring 240.

[0033] In this embodiment, when the pull rope 300 is pulled downwards, the pull rope 300 first drives the sliding block 140 to slide downwards along the groove 130. The connecting part 220 is rotatably disposed within the limiting ring 240, which only restricts the movement of the connecting part 220 along the length direction of the connecting rod 100. When the sliding block 140 is moved towards the bottom end of the connecting rod 100 by the pull rope 300, the control rod 111 on the inner wall of the rotating hole 110 slides along the spiral groove 223. Since the spiral groove 223 is located on the surface of the connecting part 220 and along its length direction, and combined with the limiting effect of the limiting ring 240 on the connecting part 220, the sliding block 140 drives the connecting part 220 to rotate through the control rod 111 during its movement. Furthermore, the rotation angle of the two cutting blades 200 is controlled by the distance of the pull rope 300, allowing the cutting blades 200 to adapt to the thickness of the leaf stalk. The rotation directions of the spiral grooves 223 in the two connecting parts 220 are opposite.

[0034] like Figure 2 and Figure 6 As shown, in one embodiment, the bottom end of the connecting rod 100 is rotatably provided with a winding wheel 150 and a drive gear 160, the bottom end of the pull rope 300 is wound on the winding wheel 150, the winding wheel 150 and the drive gear 160 are coaxially connected, and the bottom end of the connecting rod 100 is slidably provided with a drive rack 170 along the length direction, the drive rack 170 and the drive gear 160 are meshed together.

[0035] In this embodiment, pulling down the drive rack 170 causes the meshing drive gear 160 to rotate, which in turn drives the coaxially connected winding wheel 150 to rotate synchronously. The rotation of the winding wheel 150 tightens the pull rope 300, moving it downwards. After releasing the drive rack 170, the cutter 200 opens under the action of the return spring 120, pulling the pull rope 300 upwards, causing the winding wheel 150 to rotate in the opposite direction, thus releasing the pull rope 300 from the winding wheel 150.

[0036] like Figure 2 and Figure 6 As shown, in one embodiment, a tension spring 171 is provided inside the connecting rod 100, and the tension spring 171 is fixedly connected to the top end of the drive rack 170.

[0037] In this embodiment, pulling down the drive rack 170 stretches the holding spring 171. Releasing the drive rack 170 causes the spring force of the holding spring 171 to pull the drive rack 170 upward, returning it to its initial position. This prepares for the next operation and improves operational continuity.

[0038] like Figure 2 and Figure 6As shown, in one embodiment, the connecting rod 100 is provided with a limiting claw 180 for internal rotation. A torsion spring is provided on the rotating shaft of the limiting claw 180. The limiting claw 180 engages with the driving rack 170 to limit the unidirectional movement of the driving rack 170 and prevent the pull rope 300 on the winding wheel 150 from coming loose.

[0039] In this embodiment, the limiting claw 180 is used to restrict the drive rack 170 to slide only downwards. When the holding spring 171 pulls the drive rack 170 to move in the opposite direction, the limiting claw 180, under the action of the torsion spring, engages in the tooth groove of the drive rack 170, preventing the drive rack 170 from moving upwards, thereby locking the current position. This ensures that the pull rope 300 is always taut and will not come off the winding wheel 150, guaranteeing the reliability of the control. When it is necessary to unlock the drive rack 170, the limiting claw 180 is controlled to separate from the drive rack 170, and the drive rack 170 resets under the action of the holding spring 171.

[0040] like Figure 4 and Figure 5 As shown, in one embodiment, a spring 230 is provided between the two first connecting rods 221, and the midpoint of the spring 230 is fixedly connected to the top end of the pull rope 300.

[0041] In this embodiment, when the pull rope 300 is pulled, the midpoint of the elastic spring 230 is pulled down, simultaneously causing the two first connecting rods 221 to rotate in opposite directions. Releasing the pull rope 300 causes the two cutting blades 200 to synchronously reset under the action of the return spring 120. This ensures that the two blades open and close synchronously, with coordinated movements. Using a single pull rope 300 to simultaneously control the two cutting blades 200 via the elastic spring 230 simplifies the structure, avoids arranging two independent control ropes within the slender connecting rod 100, and reduces manufacturing complexity and failure rate. Furthermore, the elastic force of the elastic spring 223 allows the two cutting blades 200 to automatically and slightly change their rotation angle according to the diameter of the leaf stalk, ensuring that the cutting part 210 always adheres to the surface of the leaf stalk, improving the efficiency of cutting the leaf stalk spikes.

[0042] like Figure 2 and Figure 6 As shown, in one embodiment, the bottom end of the connecting rod 100 is provided with a handle 190, and the surface of the handle 190 is provided with anti-slip texture 191.

[0043] In this embodiment, a dedicated handhold is provided to make prolonged operation more comfortable and reduce fatigue. Furthermore, the anti-slip texture 191 on the surface of the handle 190 increases friction, preventing the tool from slipping out of the hand due to sweat or water, thus improving operational safety.

[0044] like Figure 2 and Figure 6 As shown, in one embodiment, the handle 190 has a moving groove 193 along its length, and the bottom end of the drive rack 170 is provided with a hook rod 172. The hook rod 172 passes through the moving groove 193 and protrudes from the surface of the handle 190.

[0045] In this embodiment, the hook rod 172 extends along the diameter of the handle 190, and one end of the hook rod 172 protrudes from the surface of the handle 190 after passing through the moving groove 193. When it is necessary to pull the drive rack 170, the palm loosely grips the handle 190 and moves along the bottom of the handle 190, causing the end of the hook rod 172 to move with the palm, controlling the drive rack 170 to be pulled, thereby driving the two cutting blades 200 to rotate toward the working state. After the two cutting blades 200 rotate to the working state, the palm firmly grips the handle 190, pulling the handle 190 to drive the connecting rod 100 and the cutting blades 200 to move from the root of the petiole toward the tip, cutting off the barbs on the surface of the petiole.

[0046] like Figure 2 and Figure 6 As shown, in one embodiment, the end of the hook rod 172 is provided with a clamping groove 173, which is used to clamp into the gap between the fingers.

[0047] In this embodiment, a clamping groove 173 is provided at the end of the hook rod 172. When the hook rod 172 is clamped between the fingers, the sides of the two adjacent fingers respectively abut against the surface of the clamping groove 173, which makes it easier for the operator to drive the hook rod to move with one hand.

[0048] like Figure 1 As shown, in one embodiment, a baffle 192 is provided at the bottom end of the handle 190, and the baffle 192 protrudes from the side of the connecting rod 100.

[0049] In this embodiment, the baffle 192 at the bottom of the handle 190 forms a flange. When the hand grips the handle 190, the base of the palm or the little finger side will naturally abut against the baffle 192, which can effectively prevent the hand gripping the handle 190 from accidentally slipping off the bottom of the handle 190. This is especially safe when lifting the bar upwards.

[0050] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for removing thorns from date palm petioles, characterized in that, Includes: connecting rod, pull rope, and two cutting blades; A rotating hole is provided on the side of the top end of the connecting rod along the length direction, and a return spring is also provided on the side of the connecting rod, with the first end of the return spring fixedly connected to the side of the connecting rod. The pull rope is disposed inside the connecting rod, and the bottom end of the pull rope protrudes from the bottom end of the connecting rod. The pull rope can be pulled along the length of the connecting rod. The cutting blade includes a cutting part and a connecting part. The connecting part and the cutting part are generally sickle-shaped. The connecting part is rotatably disposed in the rotating hole. A first connecting rod and a second connecting rod are respectively disposed on both sides of the connecting part. The second end of the return spring is connected to the first connecting rod. The top end of the pull rope is connected to the second connecting rod. The two cutting blades are respectively rotatably disposed on both sides of the connecting rod. When the pull rope is pulled toward the bottom end of the connecting rod, it drives the two cutting blades to rotate from the two cutting parts being in a back-to-back state to the two cutting parts being in a parallel state.

2. The date palm petiole thorn removal device according to claim 1, characterized in that, The connecting rod has a groove along its length on its side, and a sliding block is slidably disposed in the groove. The sliding block is fixedly connected to the pull rope, and the side of the sliding block protrudes from the groove. A rotating hole passes through the sliding block vertically, and a control rod is disposed on the inner wall of the rotating hole. The surface of the connecting part has a spiral groove in a spiral shape along its length, and the control rod is inserted into the spiral groove. The connecting rod is also provided with a limiting ring for restricting the movement of the connecting part along the length of the connecting rod, and the connecting part is rotatably disposed within the limiting ring.

3. The date palm petiole thorn removal device according to claim 1, characterized in that, The bottom end of the connecting rod is rotatably provided with a winding wheel and a drive gear. The bottom end of the pull rope is wound around the winding wheel. The winding wheel and the drive gear are coaxially connected. The bottom end of the connecting rod is slidably provided with a drive rack along the length direction. The drive rack is meshed with the drive gear.

4. The date palm petiole thorn removal device according to claim 3, characterized in that, The connecting rod is equipped with a tension spring inside, and the tension spring is fixedly connected to the top end of the drive rack.

5. The date palm petiole thorn removal device according to claim 3, characterized in that, The connecting rod is internally equipped with a limiting claw, and a torsion spring is provided on the rotating shaft of the limiting claw. The limiting claw engages with the drive rack to restrict the unidirectional movement of the drive rack and prevent the pull rope on the winding wheel from coming loose.

6. The date palm petiole thorn removal device according to claim 1, characterized in that, A spring is provided between the two first links, and the midpoint of the spring is fixedly connected to the top end of the pull rope.

7. The date palm petiole thorn removal device according to claim 3, characterized in that, The bottom end of the connecting rod is provided with a handle, and the surface of the handle is provided with anti-slip texture.

8. The date palm petiole thorn removal device according to claim 7, characterized in that, The handle has a moving groove along its length, and the bottom end of the drive rack is provided with a hook rod, which protrudes from the surface of the handle after passing through the moving groove.

9. A date palm petiole thorn removal device according to claim 8, characterized in that, The end of the hook rod is provided with a clamping groove, which is used to clamp into the gap between the fingers.

10. A date palm petiole thorn removal device according to claim 7, characterized in that, A baffle is provided at the bottom of the handle, and the baffle protrudes from the side of the connecting rod.

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