A non-damage device for jackfruit picking
By precisely adjusting the picking height using a lifting hydraulic cylinder and guide column structure, combined with the buffer mechanism of the elastic net and winding motor, the problems of damage and inflexible operation during jackfruit picking are solved, achieving efficient and low-damage picking results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGXI MAIQIU AGRI TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional jackfruit harvesting methods are prone to causing damage, are inflexible, inefficient, and increase labor intensity and costs.
The system employs a lifting hydraulic cylinder and guide column structure to achieve precise adjustment of the picking height. Combined with the buffer mechanism of the elastic net and the winding motor, it ensures that the jackfruit falls into the carriage at a low speed. The bottom of the carriage is designed with double slopes to facilitate automatic collection.
It effectively reduces fruit damage rate, improves harvesting efficiency, and reduces the intensity and time of manual operation.
Smart Images
Figure CN224538843U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of jackfruit planting and harvesting technology, and more specifically, to a damage prevention device for jackfruit harvesting. Background Technology
[0002] Harvesting is a crucial stage in jackfruit cultivation. Traditional harvesting methods often have several problems. For example, the harvesting process easily damages the jackfruit, affecting its appearance, shortening its shelf life, and reducing its commercial value. Furthermore, traditional harvesting tools are not flexible enough when dealing with jackfruit at different heights and growing locations, resulting in low efficiency and increased harvesting costs and labor intensity. Therefore, developing a damage-resistant harvesting device that effectively avoids damage to jackfruit, is flexible in operation, and protects the tree is of significant practical importance. Utility Model Content
[0003] This application provides a damage prevention device for jackfruit harvesting, comprising a transport vehicle, a lifting mechanism, and a buffer mechanism. The transport vehicle has unloading doors on two opposite sides of its cargo compartment, and the bottom of the compartment is designed with a sloping surface, higher in the middle and extending towards the unloading doors. The lifting mechanism is mounted on the transport vehicle's cargo compartment and includes a lifting hydraulic cylinder vertically positioned at the center of the cargo compartment and a lifting plate fixed to the free end of the hydraulic cylinder's output shaft. A discharge port is provided on the lifting plate. The buffer mechanism is located below the discharge port of the lifting plate and includes a winding shaft, a winding motor for driving the winding shaft, and an elastic net. The winding shaft is installed below the lifting plate, and one end of the elastic net is fixed to the lower edge of the short side of the lifting plate, while the other end is connected to the winding shaft. Guide tubes are vertically installed at the four corners of the cargo compartment, and guide posts that slide in cooperation with the guide tubes are correspondingly installed at the four corners of the lifting plate.
[0004] In some embodiments, the elastic net includes a main elastic band, secondary elastic bands, and connecting bands; the main elastic band is located directly below the discharge port; two secondary elastic bands are symmetrically arranged parallel to each other on both sides of the main elastic band's length; multiple connecting bands are arranged in an array at intervals along the length of the main elastic band and perpendicularly connect the main elastic band and secondary elastic bands, allowing the jackfruit to slide into the carriage through the gaps between the connecting bands.
[0005] In some embodiments, the main elastic band and the secondary elastic band have the same thickness, and the connecting band has a thickness 1.5 to 2 times that of the main elastic band.
[0006] In some embodiments, baffles, 15-25 cm wide, are provided on both sides of the discharge port.
[0007] In some embodiments, two discharge ports are symmetrically arranged on both sides of the free end of the hydraulic cylinder output shaft, and a set of independent buffer mechanisms is arranged below each discharge port.
[0008] In some embodiments, a guardrail is provided around the upper surface of the lifting plate, and a central control panel is provided on the guardrail. The central control panel controls the lifting and lowering of the lifting plate and the rotation of the winding motor.
[0009] In some embodiments, the central control unit controls the take-up motor to take up the winding motor at a preset frequency and then immediately release it.
[0010] In some embodiments, the side panel of the carriage is provided with a groove to accommodate the unloading door, and the side panel is provided with a rotating latch. The latch is a circular plate with an offset center of gravity and the upper part is cut off, which hangs down by gravity to cover and block the unloading door.
[0011] The damage-prevention harvesting equipment of this application achieves smooth lifting and precise adjustment of the harvesting height through a lifting hydraulic cylinder and guide column structure, adapting to jackfruits of different heights. The buffer mechanism uses an elastic net to flexibly support the fruit, and in conjunction with a winding motor, adjusts the net tension to effectively absorb the impact of falling fruit, allowing the jackfruits to fall gently at a low landing speed (e.g., less than or equal to 0.5 m / s). The bottom of the truck bed features a double-sloped design, combined with an openable unloading door, to automatically collect the fruit, reducing bumps and knocks during handling. This equipment effectively reduces the damage rate during fruit harvesting and improves harvesting efficiency.
[0012] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description
[0013] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:
[0014] Figure 1 This is a side view of the overall structure along the long side of the embodiment of this application;
[0015] Figure 2 This is a schematic diagram of the locking mechanism according to the embodiment of this application;
[0016] Figure 3 This is a top view of the overall structure of the embodiment of this application;
[0017] Figure 4 This is a partial view of the unfolded elastic band according to an embodiment of this application.
[0018] Explanation of main component symbols: Anti-damage equipment (100), transport vehicle (10), carriage (11), side plate (111), unloading door (12), inclined surface (13), groove (14), latch (15), lifting mechanism (20), lifting hydraulic cylinder (21), lifting plate (22), discharge port (221), guardrail (222), central control panel (223), baffle (224), buffer mechanism (30), winding shaft (31), winding motor (32), elastic net (33), main elastic band (331), secondary elastic band (332), connecting band (333), guide tube (40), guide post (50). Detailed Implementation
[0019] The embodiments of this application will be further described below with reference to the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions throughout.
[0020] Furthermore, the embodiments of this application described below in conjunction with the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting this application.
[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] Please see Figure 1 and Figure 2This application provides a damage prevention device (100) for jackfruit harvesting, which includes a transport vehicle (10), a lifting mechanism (20), and a buffer mechanism (30). The carriage (11) of the transport vehicle (10) is provided with unloading doors (12) on two opposite sides, and the bottom of the carriage (11) is designed with an inclined surface (13) that is higher in the middle and lower towards the bottom of the unloading door (12). The lifting mechanism (20) installed on the carriage (11) of the transport vehicle (10) includes a lifting hydraulic cylinder (21) vertically arranged in the center of the carriage (11) and a lifting plate (22) fixed to the free end of the output shaft of the lifting hydraulic cylinder (21). The lifting plate (22) is provided with a discharge port (221). Located below the discharge port (221) of the lifting plate (22), the buffer mechanism (30) includes a winding shaft (31), a winding motor (32) that drives the winding shaft (31) to rotate, and an elastic net (33). The winding shaft (31) is installed below the lifting plate (22), and one end of the elastic net (33) is fixed to the lower edge of the short side of the lifting plate (22), while the other end is connected to the winding shaft (31). Guide tubes (40) are vertically installed at the four corners of the carriage (11), and guide posts (50) that slide in cooperation with the guide tubes (40) are correspondingly installed at the four corners of the lifting plate (22).
[0023] The anti-damage harvesting equipment of this application achieves smooth lifting and precise adjustment of the harvesting height through the lifting hydraulic cylinder (21), guide column (50), and guide tube (40) structure, adapting to jackfruits of different heights. The buffer mechanism (30) uses an elastic net (33) to flexibly support the fruit, and works with the winding motor (32) to adjust the tension of the net surface, effectively absorbing the impact of falling, so that the jackfruits fall gently at a low landing speed (e.g., less than or equal to 0.5m / s). The bottom of the carriage (11) adopts a double-sloped design, and works with the openable unloading door (12) to achieve automatic collection of fruits, reducing bumps and knocks during handling. This equipment can effectively reduce the damage rate of fruit harvesting and improve harvesting efficiency.
[0024] Specifically, please refer to Figure 1 and Figure 3 The transport vehicle (10) is designed for loading and transporting harvested jackfruit. It comes in various forms, including non-powered models that rely on human power to push, and models that can be equipped with a power unit to achieve self-propelled movement. The cargo compartment (11) of the transport vehicle (10) has a rectangular structure, and unloading doors (12) are provided on the two opposite short sides of the cargo compartment (11) to facilitate unloading of materials.
[0025] Specifically, please combine Figure 2The bottom of the short side panel (111) of the carriage (11) along one side of the unloading door (12) can be flipped (e.g., connected by a hinge). A latch (15) for controlling the switch is provided on the short side panel (111) at the upper center of the unloading door (12). Furthermore, the latch (15) is rotatably installed on the short side panel (111) of the carriage (11). The latch (15) is composed of a circular plate with an offset center of gravity. The upper part of the circular plate is cut off to lower its center of gravity, so that it hangs down naturally under the action of gravity, covering and blocking the unloading door (12). When unloading is required, the unloading door (12) can be opened by rotating the latch (15).
[0026] Furthermore, the bottom of the cargo compartment (11) of the transport vehicle (10) is designed with a sloping surface (13) that is higher in the middle and lower on the shorter side, with an inclination angle of 5° to 8°. When the transport vehicle (10) arrives at the destination and opens the unloading door (12), the jackfruit can slide down smoothly, thereby reducing the difficulty and time of manual unloading and improving unloading efficiency.
[0027] Please see Figure 1 The lifting mechanism (20) is installed on the carriage (11) of the transport vehicle (10). Its main function is to lift the harvesters to facilitate the harvesting of jackfruit. Specifically, the lifting mechanism (20) includes a lifting hydraulic cylinder (21) and a lifting plate (22). The lifting hydraulic cylinder (21) is vertically installed at the center of the carriage (11) of the transport vehicle (10), while the lifting plate (22) is located above the opening of the carriage (11) and fixed to the free end of the output shaft of the lifting hydraulic cylinder (21). The upper surface of the lifting plate (22) is surrounded by a guardrail (222), and the central control panel (223) is installed on the guardrail (222).
[0028] To further ensure the stability and safety of the entire structure, the carriage (11) and the lifting platform (22) are connected by conduits (40) and guide columns (50) at appropriate locations. Specifically, conduits (40) are vertically installed at each of the four corners of the carriage (11), and the conduits (40) are placed inside the carriage (11), or in other words, the conduits (40) are part of the carriage (11). Guide columns (50) are correspondingly installed at each of the four corners of the lifting platform (22), and the guide columns (50) extend into the conduits (40) and can slide relative to each other. When the lifting platform (22) is raised or lowered, the guide columns (50) can slide in the conduits (40), thereby ensuring that the lifting platform (22) can move smoothly and safely during the movement, preventing any possible tilting or shaking, and ensuring the stability and reliability of the entire system.
[0029] During the jackfruit harvest, pickers stand on a lifting platform (22) to pluck ripe jackfruits from the trees. The jackfruits are then gently dropped into the lower compartment (11). To ensure the jackfruits are not damaged by impact, the compartment (11) is designed with a cushioning structure to slow the speed at which the jackfruits fall, thus effectively preventing damage from impact.
[0030] For details, please refer to the appendix. Figure 1 and Figure 3 The lifting plate (22) has a discharge port (221), and the buffer structure is located below the discharge port (221). In the preferred embodiment of this application, two discharge ports (221) are symmetrically arranged on both sides of the free end of the hydraulic cylinder output shaft, and two sets of buffer structures are symmetrically arranged below them.
[0031] The buffer structure includes a winding shaft (31), a winding motor (32), and an elastic net (33). The winding shaft (31) is mounted near the center of the lifting plate (22) via a flange structure, with its axis parallel to the short side of the lifting plate (22). The winding motor (32) provides power to drive the rotation of the winding shaft (31). As for the elastic net (33), one end is firmly fixed to the lower edge of the short side of the lifting plate (22), while the other end is connected to the winding shaft (31). This design allows the elastic net (33) to effectively absorb the impact force when the jackfruit is thrown into the carriage (11), thereby protecting the jackfruit from damage.
[0032] Furthermore, please combine Figure 4 The elastic net (33) includes a main elastic band (331), a secondary elastic band (332), and a connecting band (333), all of which are made of elastic rubber. The main elastic band (331) is placed directly below the discharge port (221), and the two secondary elastic bands (332) are arranged parallel and symmetrically at intervals on both sides of the length direction of the main elastic band (331) to ensure the balance and stability of the overall structure. The connecting band (333) vertically connects the main elastic band (331) and the secondary elastic band (332). Multiple connecting bands (333) are arranged in an array at intervals along the length direction of the main elastic band (331). The secondary elastic bands (332) mainly serve to fix and keep the main elastic band (331) unfolded. The elastic net (33) can be set with different sizes of connecting bands (333) according to actual needs to form elastic nets (33) of different sizes.
[0033] Furthermore, since the connecting strips (333) are continuously spaced, in order to reduce the indentation generated in this part of the take-up shaft (31) during take-up, the main elastic strip (331) and the secondary elastic strip (332) have the same thickness, while the connecting strip (333) has a thickness of 1.5-2 times that of the main elastic strip (331). This design is intended to ensure that the take-up shaft (31) can operate more smoothly during take-up, avoiding uneven take-up caused by excessive spacing, thereby improving overall work efficiency and take-up quality.
[0034] In one example, the jackfruit has an average diameter of about 20 cm and a length of about 35 cm. The main elastic band (331) is 22 cm wide and 0.5 cm thick. The secondary elastic band (332) is 4 cm wide and 0.5 cm thick. The connecting band (333) is 2 cm wide and 40 cm long (that is, the length of the interval). The interval between the connecting bands (333) is 25 cm.
[0035] Furthermore, to facilitate harvesters in accurately placing the jackfruit onto the main elastic band (331), baffles (224) are installed on both sides below the feeding port (221), with a width of 15-25 cm. The aim is to confine the jackfruit to the feeding port (221) area, ensuring that the jackfruit can be accurately placed on the main elastic band (331), thereby reducing operational errors and improving harvesting and processing efficiency. The baffles (224) are located above the feeding port (221), but can also be placed below, provided there is sufficient space.
[0036] In addition, to avoid jackfruit loss, a soft rubber (not shown) buffer should be installed at the feeding port or an appropriate location. The central button of the control panel (223) controls the lifting operation of the lifting platform, while the buttons on both sides are used to operate the corresponding elastic net (33) winding mechanism. The upper button indicates the lifting or raising of the elastic net (33) winding belt, while the lower button performs the opposite function. Furthermore, the control panel (223) controls the winding motor (32) to wind up and release immediately at a preset frequency to prevent the jackfruit from getting stuck. For example, after winding up 30 cm of elastic band, it is released immediately, 3 times every 10 seconds.
[0037] The damage prevention device (100) operates as follows:
[0038] The harvesters climb onto the lifting platform (22) and control the lifting hydraulic cylinder (21) via the central control panel (223) to raise the lifting platform (22) to a suitable harvesting height. After the harvesters pick the jackfruit from the tree, they drop it into the discharge port (221). Since plates are set on both sides of the discharge port (221), the jackfruit can be guided to fall accurately onto the main elastic band (331). When the elastic net (33) is impacted by the jackfruit, the main elastic band (331), the secondary elastic band (332), and the connecting band (333) work together to absorb and disperse the impact force. Then, the jackfruit falls into the carriage (11) through the gaps in the connecting band (333), thus preventing it from being damaged by colliding with the bottom of the carriage (11) or other objects.
[0039] After the elastic net (33) has received a certain number of jackfruits, the harvester can operate the buttons on both sides of the central control panel (223) to control the winding motor (32) to drive the winding shaft (31) to rotate, thereby winding up the elastic net (33) and continuing the harvesting work. When the transport vehicle (10) arrives at the designated unloading location, the operator rotates the latch (15) to open the unloading door (12), and the jackfruits will automatically slide down under the action of gravity, completing the unloading process.
[0040] Throughout the harvesting process, the guide tube (40) and guide column (50) structure ensured the smooth lifting of the lifting plate (22), preventing the lifting plate (22) from tilting or shaking, and providing a safe and stable operating platform for harvesters. At the same time, the inclined design of the bottom of the carriage (11) with the middle being higher and the short side lower, as well as the special structure of the unloading door (12), made the unloading of jackfruit more efficient and convenient, reducing the intensity and time of manual operation.
[0041] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0042] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. A damage prevention device for jackfruit harvesting, characterized in that, include: The transport vehicle (10) has unloading doors (12) on two opposite sides of its cargo compartment (11). The bottom of the cargo compartment (11) is designed with a sloping surface (13) that is higher in the middle and lower towards the bottom of the unloading door (12). The lifting mechanism (20) is installed on the carriage (11) of the transport vehicle (10). The lifting mechanism (20) includes a lifting hydraulic cylinder (21) vertically installed in the center of the carriage (11) and a lifting plate (22) fixed to the free end of the output shaft of the lifting hydraulic cylinder (21). The lifting plate (22) has a discharge port (221). A buffer mechanism (30) is located below the discharge port (221) of the lifting plate (22). The buffer mechanism (30) includes a winding shaft (31), a winding motor (32) that drives the winding shaft (31) to rotate, and an elastic net (33). The winding shaft (31) is installed below the lifting plate (22). One end of the elastic net (33) is fixed to the lower edge of the short side of the lifting plate (22), and the other end is connected to the winding shaft (31). The four corners of the carriage (11) are vertically equipped with guide tubes (40), and the four corners of the lifting plate (22) are equipped with guide columns (50) that slide with the guide tubes (40).
2. The damage prevention device according to claim 1, characterized in that: The elastic net (33) includes a main elastic band (331), a secondary elastic band (332), and a connecting band (333); the main elastic band (331) is located directly below the discharge port (221); the two secondary elastic bands (332) are symmetrically arranged in parallel on both sides of the length direction of the main elastic band (331); multiple connecting bands (333) are arranged in an array at intervals along the length direction of the main elastic band (331) and vertically connected to the main elastic band (331) and the secondary elastic bands (332), and the jackfruit can slide down into the carriage (11) from the interval between the connecting bands (333).
3. The damage prevention device according to claim 2, characterized in that: The main elastic band (331) and the secondary elastic band (332) have the same thickness, and the connecting band (333) has a thickness of 1.5 to 2 times that of the main elastic band (331).
4. The damage prevention device according to claim 1, characterized in that: The discharge port (221) is provided with baffles (224) on both sides, and the width of the baffles (224) is 15-25 cm.
5. The damage prevention device according to claim 1, characterized in that: Two discharge ports (221) are symmetrically arranged on both sides of the free end of the hydraulic cylinder output shaft, and a set of independent buffer mechanisms (30) is arranged below each discharge port (221).
6. The damage prevention device according to claim 1, characterized in that: The upper surface of the lifting plate (22) is surrounded by guardrails (222), and a central control panel (223) is installed on the guardrails (222). The central control panel (223) controls the lifting of the lifting plate (22) and the rotation of the winding motor (32).
7. The damage prevention device according to claim 1, characterized in that: The central control unit (223) controls the winding motor (32) to wind up at a preset frequency and then immediately release.
8. The damage prevention device according to claim 1, characterized in that: The side panel (111) of the carriage (11) is provided with a groove (14) for accommodating the unloading door (12). The side panel (111) is provided with a rotating latch (15). The latch (15) is a circular plate with an offset center of gravity and the upper part is cut off. It hangs down by gravity to cover and block the unloading door (12).