Tall arbor branch and leaf cutting device

Abstract

The utility model provides a high arbor branch and leaf cutting device. A supporting assembly is used for reaching the target height of branches and leaves to be cut; the shearing assembly comprises a first blade and a second blade which form shearing force, blades of the first blade and the second blade are bent oppositely, and a shearing cavity is formed between the first blade and the second blade and used for driving the second blade to rotate relative to the first blade so as to fix and shear branches and leaves. The transmission assembly comprises a first transmission unit arranged at the lower position of the supporting assembly, a second transmission unit arranged at the higher position of the supporting assembly and a driving rope for driving the first transmission unit and the second transmission unit to act synchronously, and the driving rope is used for driving the second blade to rotate. The telescopic supporting assembly is used for achieving the target height needed by branch and leaf shearing, the shearing action of the shearing assembly is achieved through driving and matching of the transmission unit and the driving rope of the transmission assembly, even if branches and leaves are soft and difficult to control, the branches and leaves can be locked in the shearing cavity to be sheared, and the shearing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of plant sampling, and in particular to a device for pruning branches and leaves of tall trees. Background Technology

[0002] Vegetation-related research encompasses fields such as agriculture, ecology, and the environment, and its popularity is increasing year by year. Among these, research on trees has attracted numerous scholars. However, when collecting branches and leaves from trees in the field, the following two problems often arise: 1. When encountering tall trees, the lowest branches and leaves are still quite a distance from the ground, making manual collection difficult; 2. For some studies, it is necessary to consider the differences in functional traits of branches and leaves at different heights of trees, but collecting branches and leaves from the canopy is difficult, posing a certain challenge to related research.

[0003] To address these issues, people typically use long poles with blades to harvest branches and leaves from the upper parts of trees. However, long poles are inconvenient to carry and lack portability, making them difficult to use for fieldwork. Furthermore, a single blade is not ideal for cutting delicate branches and leaves, often resulting in missed cuts and significantly reducing harvesting efficiency. Summary of the Invention

[0004] Purpose of the invention: This utility model provides a device for pruning branches and leaves of tall trees, which can fix the target branches and leaves before pruning, improve pruning efficiency, and is easy to carry for field operations.

[0005] Technical solution: This utility model provides a device for pruning the branches and leaves of tall trees, including:

[0006] Support components, including telescopic rods with adjustable overall length, are used to reach the target height of the branches and leaves to be pruned;

[0007] The shearing assembly includes a first blade and a second blade that generate shearing force. The blades of the first blade and the second blade are bent toward each other, and a shearing cavity is formed between the first blade and the second blade. The first blade is fixed to the end of the support assembly, and the second blade is hinged to the first blade. The weight of the end of the second blade is greater than the weight of the other end of the hinge point. The assembly is used to complete the fixing and shearing of branches and leaves by driving the second blade to rotate relative to the first blade.

[0008] The transmission assembly includes a first transmission unit disposed at a lower position of the support assembly, a second transmission unit disposed at a higher position of the support assembly, and a drive rope for driving the first transmission unit and the second transmission unit to move synchronously. The first end of the drive rope is connected to the first transmission unit, and the second end is connected to the second blade, for driving the rotation of the second blade.

[0009] As one possible approach, the telescopic rod comprises rods that are connected in sections, with corresponding fixing holes on the rods. The extension or retraction of each rod is determined according to the target height of the branches and leaves to be cut, and the rods are locked by screwing fasteners into the fixing holes.

[0010] As one possible approach, the first blade is integrally formed with the support component.

[0011] In one possible approach, the first blade bends downwards and the second blade bends upwards.

[0012] As one possible approach, the first transmission unit is constructed as a spool, the second transmission unit is constructed as a fixed spool, the drive rope is wound around the spool, and the free end of the drive rope passes around the fixed spool and connects to the second blade.

[0013] As one possible implementation, the transmission assembly further includes a tensioning unit for tensioning the drive rope that drives between the first and second transmission units.

[0014] As one possible implementation, the tensioning unit is constructed as a helical pulley, which is mounted on the support assembly;

[0015] The drive rope is wound around the first transmission unit, and the free end of the drive rope is tensioned after passing over a spiral pulley and then connected to the second blade via the second transmission unit.

[0016] As one possible approach, the spool is provided with a gripping assembly that drives the spool to rotate.

[0017] Beneficial effects: This utility model uses a retractable support component to achieve the target height required for branch and leaf pruning. Through the drive and cooperation of the transmission component, transmission unit, and drive rope, the pruning action of the pruning component is realized. Even if the branches and leaves are relatively soft and difficult to control, they can be locked in the pruning chamber to complete the pruning, thereby improving pruning efficiency. This utility model has a simple structure, is easy to operate, is convenient to carry, and has low cost. It can be applied to the pruning and collection of tree branches and leaves of various heights in field working environments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of the cutting device of this utility model;

[0020] Figure 2 This is a side view of the cutting device of this utility model;

[0021] Figure 3 This is a schematic diagram of the fixing method for telescopic rods. Detailed Implementation

[0022] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0023] In the description of the embodiments of this application, it should be noted that the terms "first", "second", "upper", "lower", "top", "bottom", 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 the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element 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 the embodiments of this application.

[0024] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0025] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the embodiments 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0026] A device for pruning branches and leaves of tall trees, such as Figure 1 , 2 As shown, it includes a support assembly 100, a shearing assembly 200, and a transmission assembly 300.

[0027] To meet the working height requirements for pruning tree branches and leaves in the field, the support assembly 100 includes a telescopic rod with an adjustable overall length. The telescopic rod can be extended or shortened to reach the target height of the branches and leaves to be pruned, so as to complete the pruning action.

[0028] In one embodiment, the telescopic rod includes segments 101 that are sequentially connected. The diameter of each segment of the rod 101 changes sequentially to complete the connection. Adjacent segments of the rod 101 can extend or retract, thus the overall length of the telescopic rod 101 can be adjusted as needed. After adjusting the extension and retraction of the rod 101, the relative positions of the rods 101 need to be fixed to ensure the stability of the support assembly 100 during shearing. Therefore, corresponding positions of the rods 101 are provided with fixing holes 102. The fixing holes 102 are generally constructed as screw holes, and the rods 101 are locked by screwing fasteners 103 into the fixing holes 102. The fasteners 103 can be screws or the like, and there are no restrictions.

[0029] like Figure 3 As shown, each rod 101 has a fixing hole 102 at the corresponding position on the top and bottom sidewalls. Taking the upper and lower rod sections 101 as an example: When the upper rod section 101 extends relative to the lower rod section 101, the fixing hole 102 at the bottom of the upper rod section 101 corresponds to the fixing hole 102 at the top of the lower rod section 101. After screwing in the fastener 103, the two can be fixed. When the upper rod section 101 retracts relative to the lower rod section 101, the fixing hole 102 at the top of the upper rod section 101 corresponds to the fixing hole 102 at the top of the lower rod section 101, and the fixing hole 102 at the bottom of the upper rod section 101 corresponds to the fixing hole 102 at the bottom of the lower rod section 101. After screwing in the fastener 103, the two can be fixed.

[0030] The shearing assembly 200 includes a first blade 201 and a second blade 202 that generate shearing force. The cutting edges of the first blade 201 and the second blade 202 are bent toward each other, and a shearing cavity is formed between the first blade 201 and the second blade 202. The first blade 201 is fixed to the end of the support assembly 100, and the second blade 202 is hinged to the first blade 201.

[0031] Because there is a shearing cavity between the first blade 201 and the second blade 202, when the second blade 202 moves closer to the first blade 201, the shearing cavity can fix the branches and leaves at the top to a certain extent, lock them in the shearing cavity, and then cut them off by the blade, ensuring that the branches and leaves will not slip out of the shearing range of the blade due to shaking, thus effectively improving the shearing efficiency.

[0032] In this embodiment, the first blade 201 and the top of the support assembly 100 are integrally formed, and the second blade 202 is hinged to the middle of the first blade 201. For ease of explanation, the two ends of the second blade 202 at the hinge point are respectively named the free end and the driving end. It can be understood that the driving end is the end that drives the second blade 202 to move, and the free end is the end that performs the shearing motion. As one way to achieve the shearing motion, the weight of the free end of the second blade 202 is greater than the weight of the driving end. When the driving end is driven to move, based on the lever principle, the blade of the free end moves closer to the first blade 201, thus achieving shearing. However, when the driving end is not powered, the second blade 202 will not perform shearing because the free end is heavier and naturally droops. More specifically, the target branch can be locked in the shearing cavity corresponding to the first blade 201 first, and then the second blade 202 can be driven to perform shearing.

[0033] To further ensure the cutting effect, the blade of the first blade 201 bends downwards, and the blade of the second blade 202 bends upwards. When encountering relatively soft branches and leaves that are difficult to fix in their cutting posture, the second blade 202 can be driven to lock the branches and leaves, locking them onto the blades of the first blade 201 and the second blade 202. The entire support assembly 100 is then moved downwards to pull the branches and leaves downwards until they break off.

[0034] The transmission assembly 300 includes a first transmission unit 301 disposed at the lower part of the support assembly 100, a second transmission unit 302 disposed at the higher part of the support assembly 100, and a drive rope 303 for driving the first transmission unit 301 and the second transmission unit 302 to move synchronously. The first end of the drive rope 303 is connected to the first transmission unit 301, and the second end is connected to the drive end of the second blade 202. When the first transmission unit 301 moves, the second transmission unit 302 is driven to move synchronously through the drive rope 303, and the second blade 202 moves closer to or further away from the first blade 201, thereby completing the fixing and cutting of branches and leaves.

[0035] In one implementation, the first transmission unit 301 is constructed as a reel rotating around a first shaft. The first shaft is fixed to the support assembly 100, and the contact surface between the reel and the first shaft can be coated with lubricating oil to ensure the flexibility of the reel's rotation. The first end of the drive rope 303 can be fixed to the reel and wound around it.

[0036] Furthermore, since the first transmission unit 301 is the driving end for the shearing assembly 200, a gripping assembly is provided on the reel for easy manual rotation. This gripping assembly includes a rocker arm 3011 and a crank handle 3012. The crank handle 3012 is connected to the reel via the rocker arm 3011, allowing for easy rotation of the reel by holding the crank handle 3012. For greater ease of operation, the rocker arm 3011 can be positioned radially on the reel.

[0037] In one implementation, the first transmission unit 301 is configured as a fixed wheel that rotates around a second axis. The drive rope 303 is released from the reel and passes around the fixed wheel for transmission, eventually connecting to the drive end of the second blade 202. It can be imagined that after the drive reel rotates, the drive rope 303 drives the fixed wheel to rotate, and by pulling or releasing, the second blade 202 can move closer to or further away from the first blade 201.

[0038] In addition, the transmission assembly 300 also includes a tensioning unit 304 for tensioning the drive rope 303 transmitted between the first transmission unit 301 and the second transmission unit 302, ensuring effective transmission of the drive rope 303. For example, the tensioning unit 304 is constructed as a helical pulley, which is installed at the bottom of the support assembly 100. The drive rope 303, released from the spool, must first pass around the helical pulley, then through the fixed pulley, and finally connect to the drive end of the second blade 202. When the drive rope 303 is under tension, it can be tightly wound into the threaded groove, causing the drive rope 303 to move along the threaded trajectory and tensioning the entire drive rope 303. When the length of the support assembly 100 needs adjustment, the tension of the drive rope 303 can be adjusted by rotating the drive spool, and it can be checked whether the drive rope 303 is wound into the threaded groove of the helical pulley. While tensioning, entanglement is avoided, so the drive rope 303 will not experience idle travel during transmission, and the rotation of the fixed pulley is continuous, ensuring the effective completion of the shearing action.

[0039] In this embodiment, the cutting device first selects a suitable rod 101 for telescopic cooperation and locks it in place according to the target cutting height. Rotating the reel forward applies a certain tension to the drive rope 303, making it taut. Checking if the drive rope 303 is within the grooves of the fixed wheel and helical pulley, if not, manually adjust it. Rotating the reel in the opposite direction reduces the tension on the drive rope 303, causing the free end of the second blade 202 to rotate downwards due to gravity, moving away from the first blade 201, and opening the cutting chamber. Holding the bottom rod 101, select a branch at the target height and secure it inside the cutting chamber. Then, rotating the reel forward drives the entire transmission assembly 300 to apply tension to the drive rope 303, causing the second blade 202 to move closer to the first blade 201 for cutting. If the branch is stuck between the first blade 201 and the second blade 202 and difficult to cut, pulling the entire device downwards will break the branch.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate this application and are not intended to limit this application. Although this application has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications, or equivalent substitutions of the technical solutions of this application do not depart from the spirit and scope of the technical solutions of this application and should be covered within the scope of the claims of this application.

Claims

1. A device for pruning the branches and leaves of tall trees, characterized in that, include: Support components, including telescopic rods with adjustable overall length, are used to reach the target height of the branches and leaves to be pruned; The shearing assembly includes a first blade and a second blade that generate shearing force. The blades of the first blade and the second blade are bent toward each other, and a shearing cavity is formed between the first blade and the second blade. The first blade is fixed to the end of the support assembly, and the second blade is hinged to the first blade. The weight of the end of the second blade is greater than the weight of the other end of the hinge point. The assembly is used to complete the fixing and shearing of branches and leaves by driving the second blade to rotate relative to the first blade. The transmission assembly includes a first transmission unit disposed at a lower position of the support assembly, a second transmission unit disposed at a higher position of the support assembly, and a drive rope for driving the first transmission unit and the second transmission unit to move synchronously. The first end of the drive rope is connected to the first transmission unit, and the second end is connected to the second blade, for driving the rotation of the second blade.

2. The tall tree branch and leaf pruning device according to claim 1, characterized in that, The telescopic rod consists of rods that are connected in sections. Each rod has a fixing hole at a corresponding position. The extension or retraction of each rod is determined according to the target height of the branches and leaves to be cut, and the rods are locked by screwing fasteners into the fixing holes.

3. The tall tree branch and leaf pruning device according to claim 1, characterized in that, The first blade is integrally formed with the support component.

4. The tall tree branch and leaf pruning device according to claim 1, characterized in that, The first blade bends downwards, and the second blade bends upwards.

5. The tall tree branch and leaf pruning device according to claim 1, characterized in that, The first transmission unit is constructed as a spool, and the second transmission unit is constructed as a fixed spool. The drive rope is wound around the spool, and the free end of the drive rope passes around the fixed spool and connects to the second blade.

6. The tall tree branch and leaf pruning device according to claim 1, characterized in that, The transmission assembly further includes a tensioning unit for tensioning the drive rope that transmits power between the first transmission unit and the second transmission unit.

7. The tall tree branch and leaf pruning device according to claim 6, characterized in that, The tensioning unit is constructed as a helical pulley, which is mounted on the support assembly; The drive rope is wound around the first transmission unit, and the free end of the drive rope is tensioned after passing over a spiral pulley and then connected to the second blade via the second transmission unit.

8. The tall tree branch and leaf pruning device according to claim 5, characterized in that, The spool is equipped with a gripping component that drives the spool to rotate.

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