Adjustable electric fixed-length pruning device for tree breeding

Abstract

The application discloses a kind of adjustable forest breeding electric fixed-length pruning device, including: cylinder, with a through cavity to put into the branch to be pruned;Scissors component, set in cylinder to cut the branch inserted into cylinder;Butt plate, sliding connection in cylinder, after branch is inserted into cylinder, butt on butt plate, to determine the length of branch to be cut;Clamping component, set on one side of scissors component, clamping table is provided in cylinder, clamping component is above clamping table, after clamping component clamps branch on clamping table, scissors component cuts branch;The application has the advantages of accurate length, stable clamping, efficient cutting.

Description

Technical Field

[0001] This invention belongs to the field of forest tree breeding technology, and in particular relates to an adjustable electric fixed-length pruning device for forest tree breeding. Background Technology

[0002] In the process of forest tree breeding and cultivation, branch length pruning is a key step to ensure uniform seedling growth, improve survival rate, and enhance subsequent cultivation quality. The consistency of branch length and the smoothness of the cut directly affect the rooting rate, nutrient absorption efficiency, and standardized breeding progress of the seedlings. The core technical requirements for pruning branches of forest tree seedlings are precise and adjustable length setting, stable branch fixation, smooth and tear-free cuts, and efficient and convenient operation. This should be adaptable to branches of different thicknesses and target pruning lengths to meet the standardized pruning needs of mass forest tree breeding.

[0003] Currently available pruning devices for forest tree breeding are mostly ordinary manual pruning shears and simple fixed cutting tools. They have significant technical shortcomings in terms of length control, branch fixation, and operational adaptability, and cannot meet the requirements of refined and standardized breeding pruning. The specific technical defects are as follows: Firstly, the existing pruning device does not have a sliding and adjustable contact positioning component. The length of the branch pruning is entirely estimated and controlled by manual visual estimation, which cannot accurately limit the length of the branch extending into the cutting part. This results in branches of varying lengths after pruning, making it difficult to meet the standardized length requirements for forest tree breeding, and seriously affecting the uniformity and survival rate of seedlings in subsequent cultivation.

[0004] Secondly, the existing device is not equipped with clamping components and matching clamping platform. When pruning, the branches are in a free and loose state. When touched by external force or affected by cutting force, they are very easy to deviate, bend, or shake. This will not only further aggravate the length deviation, but also cause the cut to be crooked, the bark of the branches to be torn, damage the branch tissue, and reduce the survival rate of branch cuttings or cultivation.

[0005] Third, existing devices are mostly of fixed specifications and cannot be flexibly adjusted to a fixed length according to the variety, thickness and target pruning length of different tree seedlings. A single device can only be adapted to branches of a specific specification, and multiple sets of tools are required to complete the operation, which increases the breeding cost and the complexity of operation.

[0006] Fourth, existing pruning devices mostly rely on manual force for cutting. When pruning large batches of trees for breeding, the labor intensity of operators is high and the operation is time-consuming. Moreover, long-term manual operation is prone to uneven force, which further affects the cut quality and pruning accuracy, and cannot meet the high-efficiency operation requirements of large-scale tree breeding.

[0007] As forest tree breeding develops towards standardization, large-scale production, and precision, the shortcomings of existing pruning devices, such as inaccurate length setting, unstable fixation, easily damaged cuts, and low efficiency, have become the core bottleneck restricting the quality and efficiency of forest tree breeding. There is an urgent need to develop an adjustable electric fixed-length pruning device for forest tree breeding that can accurately set length, securely clamp, and efficiently cut, in order to solve the above-mentioned technical pain points. Summary of the Invention

[0008] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0009] In order to overcome the shortcomings of the prior art, the present invention provides an adjustable electric fixed-length pruning device for forest tree breeding.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: an adjustable electric fixed-length pruning device for forest tree breeding, comprising: The tube has a through cavity to hold the branches to be pruned; A shearing assembly is located inside the tube to cut off branches that extend into the tube; The abutment plate is slidably connected to the cylinder. After the branch extends into the cylinder, it abuts against the abutment plate to determine the length of the branch to be cut. The clamping component is located on one side of the shearing component. The cylinder is equipped with a clamping platform, and the clamping component is located above the clamping platform. After the clamping component clamps the branch on the clamping platform, the shearing component cuts the branch.

[0011] Furthermore, the abutment plate and the shear assembly are located at both ends of the cylinder; the abutment plate is provided with a guide block, and the side wall of the cylinder is provided with a guide groove for the guide block to move; the guide block is provided with a threaded hole, and a threaded rod passes through the threaded hole; the cylinder is provided with a motor that drives the threaded rod to rotate.

[0012] Furthermore, the clamping assembly includes a clamping block and a fixing block. The fixing block is fixed to the bottom surface of the clamping block and is made of an elastic material. The bottom of the clamping block is provided with a guide rod, and the clamping platform is provided with a guide hole. The guide rod passes through the guide hole. The cylinder is provided with a first reel, and a first pull rope is wound on the first reel. One end of the first pull rope is connected to the fixing block.

[0013] Furthermore, the scissor assembly includes a first blade and a second blade, which are respectively located above and below the clamping platform. The first blade is provided with a first transmission rod, and the second blade is provided with a second transmission rod. The clamping platform is provided with a first transmission wheel that drives the first transmission rod and the second transmission rod, which are respectively located on both sides of the first transmission wheel. The cylinder is provided with a second reel, and a second pull rope is wound around the second reel. One end of the second pull rope is connected to the second blade.

[0014] Furthermore, the cylinder is provided with a second transmission wheel that drives the first threaded wheel and a third transmission wheel that drives the second threaded wheel. The third transmission wheel is located on one side of the second transmission wheel. The second and third transmission wheels are respectively provided with a first transmission hole and a second transmission hole. A first connecting rod passes through the second transmission wheel, and a transmission tube passes through the first transmission hole. The transmission tube can form a transmission fit with the inner wall of the first or second transmission hole. One end of the first connecting rod is inserted into the transmission tube.

[0015] Furthermore, the cylinder is provided with a mounting plate, the third transmission wheel and the second thread wheel are respectively connected to the mounting plate, the mounting plate is provided with a first electromagnet, the transmission tube is provided with a first magnetic plate, one end of the first connecting rod is provided with a first spring, one end of the first spring abuts against the inner wall of the transmission tube, when the first electromagnet is energized, it generates a magnetic force that attracts the first magnetic plate, so that the transmission tube moves from the first transmission hole to the second transmission hole.

[0016] Furthermore, the guide hole has a movable groove on its side wall, and a movable block and a limiting block are provided in the movable groove. The movable block and the limiting block are connected by a second spring. The movable block and the inner wall of the movable groove are connected by a third spring. The top of the limiting block has an inclined groove. The guide rod has multiple limiting grooves corresponding to the limiting blocks. The movable block has a second connecting rod that extends out of the cylinder. The cylinder has a through groove for the second connecting rod to move. The second connecting rod has a second magnetic plate. The second magnetic plate is located on one side of the first electromagnet. When the first electromagnet is energized, it generates a magnetic force that repels the second magnetic plate.

[0017] Furthermore, the cylinder is provided with a support plate, the support plate has a through hole, the transmission tube passes through the through hole, the side wall of the transmission tube has a protrusion, and the side wall of the through hole has a slot corresponding to the protrusion. When the first electromagnet is energized, the protrusion rotates with the transmission tube until it is aligned with the slot, and the transmission tube moves towards the third transmission wheel. The bottom of the clamping block is provided with a fourth spring, and the bottom end of the fourth spring abuts against the clamping table.

[0018] Furthermore, the cylinder is provided with a mounting base, the motor is mounted on the mounting base, the bottom of the motor is provided with a slider, the bottom of the mounting base is provided with a slide groove for the slider to move, the slider is provided with a fifth spring, one end of the fifth spring abuts against the inner wall of the slide groove, one end of the slide groove is provided with a second electromagnet, and the slider is provided with a magnetic block; the motor is a dual-shaft motor, and the two output shafts of the motor are respectively fitted with transmission sleeves.

[0019] Furthermore, the adjustable electric fixed-length pruning device for forest tree breeding also includes a hand handle with a connecting groove, a connecting block on the cylinder, a connecting wheel on the connecting block, and the connecting wheel rotatably connected to the connecting groove; the hand handle has a transmission cavity with a fourth transmission wheel inside, and the connecting wheel and the fourth transmission wheel are connected by a synchronous belt; the side wall of the transmission cavity has a transmission groove with a transmission block that is connected to the synchronous belt inside, and a push plate is provided on the transmission block.

[0020] The advantages of this invention are: By setting a sliding connecting plate, the branch extends into the tube and abuts against the plate, which can precisely limit the length of the branch to be cut, completely eliminating the drawbacks of manual visual estimation, achieving precise control and flexible adjustment of the pruning length, ensuring that the pruned branches are of uniform length, meeting the standardization requirements of forest tree breeding, effectively improving the uniformity and survival rate of seedlings in subsequent cultivation, and solving the problem of poor breeding quality caused by the lack of fixed length adjustment in the background technology.

[0021] By working together with the clamping components and the clamping platform, the branches can be firmly clamped on the clamping platform, preventing the branches from shifting, bending, or shaking during the cutting process. This ensures that the branches and the scissors components are precisely aligned, resulting in clean cuts without tearing, reducing damage to the branch tissue, and further improving the survival rate of branch cuttings or cultivation. At the same time, it avoids problems such as missed or incorrect cuttings caused by branch shaking, ensuring the quality of pruning.

[0022] The cylinder has a through cavity that can effectively guide and limit the inserted branches, ensuring that the branches are inserted at a standard angle and in a fixed position. This keeps the branches and the shearing components in a vertically compatible state, further improving the accuracy of length setting and avoiding incomplete cutting caused by branches being inserted haphazardly. This enhances the orderliness and efficiency of batch pruning operations.

[0023] The abutment plate is adjustable and can be flexibly adjusted to position the branch abutment according to the variety, thickness and target pruning length of different tree seedlings. It can adapt to the pruning needs of different branch sizes without the need for multiple sets of pruning tools, reducing the operating cost of tree breeding and improving the practicality and flexibility of the device.

[0024] The device uses an electric shear assembly, eliminating the need for manual cutting and significantly reducing the labor intensity of operators. Combined with a precise length setting and stable clamping structure, it enables rapid cutting of branches, improves the pruning efficiency of mass forest tree breeding, and meets the needs of large-scale and refined forest tree breeding operations, solving the pain points of time-consuming and labor-intensive manual operation in the background technology.

[0025] The components work together to achieve the core requirements of precise and adjustable length, stable branch fixation, and neat and standardized cuts. They also have the advantages of convenient operation, strong adaptability, and high efficiency, which extends the service life of the device, reduces maintenance costs, meets the needs of standardized and large-scale forest tree breeding, and enhances the market competitiveness and promotion value of the product. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0027] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0028] In the attached diagram: Figure 1 This is a schematic diagram of the adjustable electric fixed-length pruning device for forest tree breeding in one embodiment of the present invention.

[0029] Figure 2 for Figure 1 A cross-sectional view of the cylindrical body of the adjustable electric fixed-length pruning device for forest tree breeding in the embodiment shown.

[0030] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0031] Figure 4 for Figure 2 Enlarged view of point B in the image.

[0032] Figure 5 for Figure 2 Enlarged view of point C in the image.

[0033] Figure 6 for Figure 1 A cross-sectional view of the clamping block of the adjustable electric fixed-length pruning device for forest tree breeding in the embodiment shown.

[0034] Figure 7 for Figure 6 Enlarged view of point D in the image.

[0035] Figure 8 for Figure 1 A cross-sectional view of the shear assembly of the adjustable electric fixed-length pruning device for forest tree breeding in the illustrated embodiment.

[0036] Figure 9 for Figure 8 Enlarged view of point E in the image.

[0037] Figure 10 for Figure 1 A cross-sectional view of the second reel of the adjustable electric fixed-length pruning device for forest tree breeding in the embodiment shown.

[0038] Figure 11 for Figure 10 Enlarged view of point F in the image.

[0039] Figure 12 for Figure 1 A cross-sectional view of the guide rod of the adjustable electric fixed-length pruning device for forest tree breeding in the embodiment shown.

[0040] Figure 13 for Figure 12 Enlarged view of point G in the image.

[0041] Figure 14 for Figure 12 Enlarged view of point H in the image.

[0042] Figure 15 for Figure 1 A cross-sectional view of the transmission pipe of the adjustable electric fixed-length pruning device for forest tree breeding in the embodiment shown.

[0043] Figure 16 for Figure 15 Enlarged view of point I in the image.

[0044] The meanings of the reference numerals in the figure are as follows: 101. Cylinder; 102. Clamping platform; 103. Clamping block; 104. Fixing block; 105. Protective cover; 106. Hand handle; 107. Connecting wheel; 108. Control button; 109. Abutting plate; 110. Receiving box; 111. Fixing plate; 112. Second blade; 113. Sixth spring; 114. Transmission chamber; 115. Threaded rod; 116. Motor; 117. Transmission sleeve; 118. Mounting plate; 119. Second transmission wheel; 120. Third transmission wheel; 121. First connecting rod; 122. Transmission pipe; 123. First spring; 124. First magnetic plate; 125. Support plate; 126. Second magnetic plate; 127. First blade; 128. Mounting 129. Seat; 130. Slider; 131. Fifth Spring; 132. Fifth Transmission Wheel; 133. Synchronous Belt; 134. Fourth Transmission Wheel; 135. Transmission Block; 136. Push Plate; 137. First Transmission Plate; 138. Second Transmission Plate; 139. First Transmission Wheel; 140. Mounting Bracket; 141. Third Spool; 142. First Pull Rope; 143. Reversing Wheel; 144. Guide Rod; 145. Second Connecting Rod; 146. Second Spool; 147. Second Pull Rope; 148. Fourth Spring; 149. Limiting Groove; 150. Movable Block; 151. Limiting Block; 152. Third Spring; 153. Second Spring; 154. Protrusion; 155. Slot. Detailed Implementation

[0045] Embodiments of this disclosure will now be described in more detail with reference to the accompanying drawings. While some embodiments of this disclosure are shown in the drawings, it should be understood that this disclosure can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this disclosure. It should be understood that the accompanying drawings and embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of protection of this disclosure.

[0046] It should also be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings. Unless otherwise specified, the embodiments and features described in this disclosure can be combined with each other.

[0047] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are used only to distinguish different devices, modules or units, and are not used to limit the order of functions performed by these devices, modules or units or their interdependencies.

[0048] It should be noted that the terms "a" and "a plurality of" used in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0049] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of such messages or information.

[0050] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0051] like Figure 1-16 As shown, an adjustable electric fixed-length pruning device for forest tree breeding includes a cylinder 101, a shear assembly, an abutment plate 109, and a clamping assembly.

[0052] The cylinder 101 has a through cavity for holding branches to be pruned; a shearing assembly is disposed inside the cylinder 101 to cut the branches extending into the cylinder 101; an abutment plate 109 is slidably connected inside the cylinder 101, and the branches, after extending into the cylinder 101, abut against the abutment plate 109 to determine the length of the branches to be cut; a clamping assembly is disposed on one side of the shearing assembly, and a clamping platform 102 is provided inside the cylinder 101, with the clamping assembly positioned above the clamping platform 102. After the clamping assembly clamps the branches onto the clamping platform 102, the shearing assembly cuts the branches. When pruning branches, the cylinder 101 is inserted onto the branches to be pruned, allowing the branches to extend along the cavity of the cylinder 101 until the end of the branches abuts against the abutment plate 109. At this point, the distance between the abutment plate 109 and the shearing assembly is the preset pruning length. Subsequently, the clamping component activates, firmly holding the branch on the clamping platform 102 to prevent displacement during the cutting process. Next, the shearing component engages, precisely cutting the clamped branch to ensure a clean, tear-free cut. After cutting, the clamping component releases, allowing the operator to remove the trimmed branch from the cylinder 101, completing a single trimming operation. The guiding function of the cylinder 101 ensures consistent branch insertion direction, and combined with the precise positioning of the abutment plate 109, standardized trimming of branches of different lengths is achieved, effectively solving the problems of inaccurate length setting and low efficiency associated with traditional manual trimming tools.

[0053] The abutment plate 109 and the shear assembly are located at opposite ends of the cylinder 101, ensuring that the portion of the branch to be pruned is completely within the cutting range of the shear assembly after it extends into the cylinder 101 from one end, thus guaranteeing accurate pruning length. The abutment plate 109 is equipped with a guide block, and the side wall of the cylinder 101 has a guide groove for the guide block to move. The length direction of the guide groove is aligned with the axis of the cylinder 101, providing precise guidance for the sliding of the abutment plate 109 and preventing it from shifting or rotating during movement. This ensures that the abutment plate 109 remains perpendicular to the axis of the cylinder 101, thereby guaranteeing accurate branch abutment positioning. The guide block has a threaded hole through which a threaded rod 115 passes. A motor 116 on the cylinder 101 drives the threaded rod 115 to rotate. When motor 116 starts, it drives threaded rod 115 to rotate. Since threaded rod 115 is threadedly engaged with threaded hole on guide block, and guide block cannot rotate within guide groove, the rotation of threaded rod 115 is converted into linear movement of guide block along guide groove, thereby driving abutment plate 109 to slide within cylinder 101. This achieves precise adjustment of the position of abutment plate 109, meeting the needs of different target trimming lengths. Motor 116 can be a stepper motor or servo motor. Its rotation angle is precisely controlled by control system, thereby precisely controlling the moving distance of abutment plate 109, realizing digital adjustment of fixed length dimension, and improving fixed length accuracy.

[0054] The clamping assembly includes a clamping block 103 and a fixing block 104. The fixing block 104 is fixed to the bottom surface of the clamping block 103. The fixing block 104 is made of an elastic material, such as rubber or silicone, which has good elasticity and friction, and can closely fit the surface of the branch when clamping it, ensuring the stability of the clamping while avoiding damage to the bark of the branch. A guide rod 144 is provided at the bottom of the clamping block 103, and a guide hole is provided on the clamping platform 102. The guide rod 144 passes through the guide hole. The cooperation between the guide rod 144 and the guide hole provides guidance for the up and down movement of the clamping block 103, ensuring that the clamping block 103 can move accurately towards the clamping platform 102 and press the branch firmly onto the clamping platform 102. A first reel is provided on the cylinder 101, and a first pull rope 142 is wound on the first reel. One end of the first pull rope 142 is connected to the fixing block 104. A reversing wheel 143 is provided below the clamping platform 102. A first pull rope 142 is threaded through the clamping platform 102 and wound around the reversing wheel 143, so that when the first pulley pulls the first pull rope 142, it drives the clamping block 103 to move towards the clamping platform 102. When the first pulley rotates, the first pull rope 142 pulls the fixing block 104 and the clamping block 103 downward, thereby clamping the branch.

[0055] The scissors assembly includes a first blade 127 and a second blade 112, which are respectively positioned above and below the clamping platform 102, forming a symmetrical arrangement. The second blade 112 is located between the first blades 127. The relative movement of the first blades 127 and 112 achieves the cutting of branches. A first transmission rod is provided on the first blade 127, and a second transmission rod is provided on the second blade 112. A first transmission wheel 139 is provided on the clamping platform 102 to drive the first and second transmission rods. The first transmission wheel 139 is connected to the first and second transmission rods via gears. The first and second transmission rods are respectively located on both sides of the first transmission wheel 139. When the first transmission wheel 139 rotates, it drives the first and second transmission rods to move in opposite directions, thereby causing the first blades 127 and 112 to move closer or further apart, completing the cutting action. A second reel 146 is mounted on the cylinder 101, and a second pull rope 147 is wound around the second reel 146. One end of the second pull rope 147 is connected to the second blade 112. Rotation of the second reel 146 pulls the second pull rope 147, thereby moving the second blade 112 to cooperate with the first blade 127 for cutting. A sixth spring 113 is mounted on the second blade 112, one end of which is fixed to the bottom of the clamping platform 102. The sixth spring 113 provides a reset function for the second blade 112. The blade is made of high-hardness alloy material, with a sharp and specially treated cutting edge to ensure rapid cutting of branches, resulting in a clean, burr-free cut and reducing compression and tearing of the branch tissue.

[0056] The cylinder 101 is equipped with a second transmission wheel 119 that engages with the first threaded wheel 146, and a third transmission wheel 120 that engages with the second threaded wheel 146. The third transmission wheel 120 is located on one side of the second transmission wheel 119. The second transmission wheel 119 and the third transmission wheel 120 are respectively provided with a first transmission hole and a second transmission hole. The inner walls of the first transmission hole and the second transmission hole can be provided with keyways or splines. A first connecting rod 121 passes through the second transmission wheel 119, and a transmission tube 122 passes through the first transmission hole. The outer wall of the transmission tube 122 is provided with a structure that engages with the keyway or spline, so that the transmission tube 122 can form a transmission engagement with the inner wall of the first transmission hole or the second transmission hole. One end of the first connecting rod 121 is inserted into the transmission tube 122, and the two can be circumferentially fixed by a spline or a flat key, but can slide relative to each other axially. By moving the transmission tube 122 to engage with the first transmission hole of the second transmission wheel 119 or the second transmission hole of the third transmission wheel 120, the first connecting rod 121 drives the second transmission wheel 119 or the third transmission wheel 120, thereby controlling the release of the clamping assembly and the cutting action of the scissor assembly respectively.

[0057] A mounting plate 118 is provided on the cylinder 101. The third transmission wheel 120 and the second reel 146 are respectively connected to the mounting plate 118, which provides a stable mounting base for each component. A first electromagnet is provided on the mounting plate 118, and a first magnetic plate 124 is provided on the transmission tube 122. The first magnetic plate 124 is made of a material that can be attracted by a magnet. A first spring 123 is provided at one end of the first connecting rod 121. One end of the first spring 123 abuts against the inner wall of the transmission tube 122, providing a thrust to the transmission tube 122 in the direction of the second transmission wheel 119. When the first electromagnet is not energized, under the action of the first spring 123, the transmission tube 122 engages with the first transmission hole of the second transmission wheel 119. At this time, the rotation of the first connecting rod 121 can drive the second transmission wheel 119 to rotate, thereby controlling the release of the clamping assembly through the first reel and the first pull rope 142. When the first electromagnet is energized, it generates a magnetic force that attracts the first magnetic plate 124, overcoming the elastic force of the first spring 123 and attracting the transmission tube 122 from the first transmission hole to the second transmission hole. At this time, the rotation of the first connecting rod 121 drives the third transmission wheel 120 to rotate, and the second thread wheel 146 and the second pull rope 147 control the scissor assembly to cut.

[0058] A movable groove is provided on the side wall of the guide hole. A movable block 150 and a limiting block 151 are located within the movable groove. The movable block 150 and the limiting block 151 are connected by a second spring 153. The movable block 150 and the inner wall of the movable groove are connected by a third spring 152. A sloping groove is provided on the top of the limiting block 151. Multiple limiting grooves 149 corresponding to the limiting blocks 151 are provided on the guide rod 144, and these limiting grooves 149 are evenly distributed along the length of the guide rod 144. When the clamping block 103 moves downwards to clamp the branch, the limiting grooves 149 on the guide rod 144 align with the limiting block 151. Under the action of the second spring 153, the limiting block 151 engages with the limiting groove 149, limiting the guide rod 144 and preventing the clamping block 103 from moving upwards during the cutting process, ensuring the stability of the clamping. The movable block 150 is provided with a second connecting rod 145, which extends out of the cylinder 101. The cylinder 101 has a through groove for the second connecting rod 145 to move. The second connecting rod 145 is provided with a second magnetic plate 126, which is located on one side of the first electromagnet and has opposite magnetic poles to the first magnetic plate 124. When the first electromagnet is energized, in addition to attracting the first magnetic plate 124, it also generates a magnetic force that repels the second magnetic plate 126, pushing the second magnetic plate 126 to move the second connecting rod 145 and the movable block 150.

[0059] A support plate 125 is provided on the cylinder 101, and a through hole is provided on the support plate 125. The transmission pipe 122 passes through the through hole, and the through hole guides the movement of the transmission pipe 122. A protrusion 154 is provided on the side wall of the transmission pipe 122, and a slot 155 corresponding to the protrusion 154 is provided on the side wall of the through hole. The length direction of the slot 155 is consistent with the movement direction of the transmission pipe 122. When the first electromagnet is energized and attracts the transmission pipe 122 to move, the transmission pipe 122 can only move smoothly towards the third transmission wheel 120 when the protrusion 154 rotates with the transmission pipe 122 to be aligned with the slot 155. The bottom of the clamping block 103 is provided with a fourth spring 148. The bottom end of the fourth spring 148 abuts against the clamping platform 102. When the first pull rope 142 releases the tension on the clamping block 103 and the limiting block 151 disengages from the limiting groove 149, the elastic force of the fourth spring 148 will push the clamping block 103 to move upward, releasing the clamping of the branch so that the cylinder 101 can be removed from the branch.

[0060] A mounting base 128 is provided on the cylinder 101, and the motor 116 is mounted on the mounting base 128, providing stable support for the motor 116. A slider 129 is provided at the bottom of the motor 116, and a groove for the slider 129 to move is provided at the bottom of the mounting base 128. A fifth spring 130 is provided on the slider 129, one end of which abuts against the inner wall of the groove. A second electromagnet is provided at one end of the groove. A magnetic block is provided on the slider 129, and the magnetic poles of the magnetic block and the second electromagnet can be configured to attract or repel each other as needed. The motor 116 is a dual-shaft motor, and transmission sleeves 117 are respectively fitted on the two output shafts of the motor 116. The transmission sleeves 117 can be connected to the output shafts of the motor 116 via splines or flat keys and can slide axially. When the position of the abutment plate 109 needs adjustment, the second electromagnet is energized, attracting the magnetic block on the slider 129 to move. The transmission sleeve 117 on one output shaft of the motor 116 meshes with the gear on the drive threaded rod 115, causing the motor 116 to rotate and thus rotating the threaded rod 115, adjusting the position of the abutment plate 109. When clamping or cutting is required, the second electromagnet is de-energized. Under the action of the fifth spring 130, the slider 129 drives the motor 116 to move, engaging the transmission sleeve 117 on the other output shaft with the gear at the input end of the first connecting rod 121, thereby driving the first connecting rod 121 to rotate, achieving clamping and cutting. This design allows one motor 116 to drive multiple components, simplifying the device structure and reducing cost and failure rate.

[0061] The adjustable electric fixed-length pruning device for forest tree breeding also includes a handheld lever 106, which is convenient for operators to hold and operate the device. The handheld lever 106 has a connecting groove, and the cylinder 101 has a connecting block. A connecting wheel 107 is mounted on the connecting block, and the connecting wheel 107 is rotatably connected to the connecting groove, allowing the cylinder 101 to rotate relative to the handheld lever 106. This allows the operator to adjust the direction of the cylinder 101 according to different working angles and positions, improving operational flexibility. The handheld lever 106 has a transmission cavity 114, which contains a fourth transmission wheel 133 and a fifth transmission wheel 131. The fifth transmission wheel 131 and the fourth transmission wheel 133 are connected by a synchronous belt 132, and the fifth transmission wheel 131 meshes with the connecting wheel 107 to form a kinetic engagement. The side wall of the transmission cavity 114 has a transmission groove 134, which contains a transmission block 135 that engages with the synchronous belt 132. A push plate 136 is mounted on the transmission block 135. The operator pushes the push plate 136, causing the transmission block 135 to move within the transmission groove 134. The transmission block 135 drives the fourth transmission wheel 133 and the fifth transmission wheel 131 to rotate via the synchronous belt 132. The connecting wheel 107 rotates accordingly, thereby causing the cylinder 101 to rotate relative to the hand lever 106, thus achieving angle adjustment. A control button 108 can also be installed on the hand lever 106 to control the start / stop, forward / reverse rotation of the motor 116, and the on / off state of the electromagnet, enabling convenient operation of various functions of the device.

[0062] The cylinder 101 is equipped with a receiving box 110, which is located on one side of the clamping platform 102. A fixing plate 111 is rotatably connected to one end of the cylinder 101. The fixing plate 111 rotates so that it partially overlaps with the side wall of the receiving box 110 to fix the receiving box 110 inside the cylinder 101. The branches that are cut off inside the cylinder 101 fall into the receiving box 110 for collection.

[0063] When using this application to prune branches, the user first adjusts the angle of the cylinder 101 and the position of the abutment plate 109 according to the branches to be pruned. Specifically, the user pushes the push plate 136 to drive the connecting wheel 107 to rotate, thereby adjusting the angle of the cylinder 101. After the user presses one of the buttons on the hand lever 106, the second electromagnet is energized and the motor 116 starts working. The motor 116 and the threaded rod 115 form a transmission cooperation to drive the threaded rod 115 to rotate. The position of the abutment plate 109 is adjusted by the cooperation of the threaded rod 115 and the threaded hole, thereby determining the length of the branches to be pruned. After the position of the abutment plate 109 is adjusted, the button is released, the second electromagnet is de-energized, the motor 116 stops working, the fifth spring 130 pushes the motor 116 to reset, and the motor 116 re-establishes a transmission engagement with the first connecting rod; then the user puts the cylinder 101 onto the branch to be pruned, presses another button on the hand lever 106, the first electromagnet is energized, and the motor 116 works. At this time, the protrusion 154 on the transmission tube 122 is misaligned with the slot 155, the transmission tube 122 is still in the first transmission hole and forms a transmission engagement with the second transmission wheel 119, the second magnetic plate 126 moves away from the first electromagnet under the magnetic force of the first electromagnet, the movable block 150 drives the limiting block 151 to move outward of the movable slot, so that the limiting block 151 abuts against the side wall of the guide rod 144; the motor 116 drives the first connecting rod 121 to rotate, and the transmission tube 122 drives the second transmission wheel 119 to rotate. The first pulley rotates, pulling the first pull rope 142 to move. The first pull rope 142 pulls the clamping block 103 to move towards the clamping platform 102. The guide rod 144 moves downward towards the guide hole. During the movement, the top of the limiting groove 149 of the guide rod 144 abuts against the inclined groove on the top of the limiting block 151, pushing the limiting block 151 to move. When the protrusion 154 rotates to be aligned with the slot 155, the fixing block 104 abuts against the branch to clamp and fix the branch. The limiting block 151 is embedded in one of the limiting grooves 149 to fix the guide rod 144, thereby fixing the clamping block 103 in the current position. The first electromagnet attracts the first magnetic plate 124 to move. The transmission tube 122 is dislodged from the first transmission hole and inserted into the second transmission hole. The motor 116 continues to work to drive the second pulley 146 to rotate. The second pull rope 147 pulls the second blade 112 to move, cooperating with the first blade 127 to accurately cut the branch. After trimming, the pruned portion of the branch falls into the receiving box 110 below for automatic collection. Releasing the button de-energizes the first electromagnet, and the first spring 123 pushes the transmission tube 122 back to the first transmission hole, re-engaging with the second transmission wheel 119. Simultaneously, the repulsive force of the first electromagnet on the second magnetic plate 126 disappears, the third spring 152 pulls the movable block 150 back to its original position, and the limiting block 151 moves with the movable block 150, disengaging from the limiting groove 149. The fourth spring 148 pushes the clamping block 103 upwards, releasing the clamp on the branch.The operator can then remove the cylinder 101 from the remaining branches, completing a full pruning operation. The receiving box 110 can be separated from the side wall of the box by rotating the fixing plate 111, making it easy to pour out the collected pruned branches and maintain the continuous operation capability of the device. The entire process is driven by the motor 116 and controlled by the electromagnet, realizing the integrated operation of fixed length adjustment, automatic clamping, precise cutting and branch collection, which greatly improves the efficiency and standardization of forest tree breeding pruning.

[0064] The clamping block 103 is provided with a mounting groove, and a mounting frame 140 is provided in the mounting groove. A third spool 141 is connected to the mounting frame 140. The third spool 141 is connected to the mounting frame 140 through a torsion spring. One end of the first pull rope 142 is wound around the third spool 141. When the torsion spring is in the normal state, part of the first pull rope 142 is wound around the third spool 141. This part of the pull rope wound around the third spool 141 is used to compensate for the length of the first pull rope 142 that is wound into the first spool, so as to ensure that the protrusion 154 on the transmission tube 122 can rotate to the position aligned with the slot 155 when the clamping block 103 is clamping branches of any thickness.

[0065] A protective cover 105 is connected to the side wall of the cylinder 101. The motor 116, transmission wheel, reel, guide groove and other components on the surface of the cylinder 101 are all inside the protective cover 105, which effectively prevents external dust, moisture and debris from corroding the internal transmission structure. At the same time, it prevents operators from accidentally touching moving parts during use and causing safety hazards, thereby improving the safety and service life of the device.

[0066] It is worth noting that the branches pruned in this application are all branches from seedling breeding, not robust branches.

[0067] The above description is merely a selection of preferred embodiments of this disclosure and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in the embodiments of this disclosure is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in the embodiments of this disclosure.

Claims

1. An adjustable electric fixed-length pruning device for forest tree breeding, characterized in that: include: The cylinder (101) has a through cavity for inserting branches to be pruned; A shearing assembly is provided inside the cylinder (101) to cut off branches that extend into the cylinder (101); The abutment plate (109) is slidably connected inside the cylinder (101). After the branch extends into the cylinder (101), it abuts against the abutment plate (109) to determine the length of the branch to be cut. A clamping assembly is provided on one side of the scissor assembly. A clamping platform (102) is provided inside the cylinder (101). The clamping assembly is located above the clamping platform (102). After the clamping assembly clamps the branch on the clamping platform (102), the scissor assembly cuts the branch.

2. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 1, characterized in that: The abutment plate (109) and the scissor assembly are located at both ends of the cylinder (101); the abutment plate (109) is provided with a guide block, and the side wall of the cylinder (101) is provided with a guide groove for the guide block to move; the guide block is provided with a threaded hole, and a threaded rod (115) passes through the threaded hole; the cylinder (101) is provided with a motor (116) for driving the threaded rod (115) to rotate.

3. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 2, characterized in that: The clamping assembly includes a clamping block (103) and a fixing block (104). The fixing block (104) is fixed to the bottom surface of the clamping block (103) and is made of elastic material. The bottom of the clamping block (103) is provided with a guide rod (144). The clamping platform (102) is provided with a guide hole, and the guide rod (144) passes through the guide hole. The cylinder (101) is provided with a first reel, and a first pull rope (142) is wound on the first reel. One end of the first pull rope (142) is connected to the fixing block (104).

4. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 3, characterized in that: The scissor assembly includes a first blade (127) and a second blade (112), the first blade (127) and the second blade (112) being respectively disposed above and below the clamping platform (102). The first blade (127) is provided with a first transmission rod, and the second blade (112) is provided with a second transmission rod. The clamping platform (102) is provided with a first transmission wheel (139) for transmitting the first transmission rod and the second transmission rod. The first transmission rod and the second transmission rod are respectively disposed on both sides of the first transmission wheel (139). The cylinder (101) is provided with a second reel (146), and a second pull rope (147) is wound around the second reel (146). One end of the second pull rope (147) is connected to the second blade (112).

5. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 4, characterized in that: The cylinder (101) is provided with a second transmission wheel (119) that drives the first thread pulley and a third transmission wheel (120) that drives the second thread pulley (146). The third transmission wheel (120) is located on one side of the second transmission wheel (119). The second transmission wheel (119) and the third transmission wheel (120) are respectively provided with a first transmission hole and a second transmission hole. A first connecting rod (121) is inserted into the second transmission wheel (119). A transmission tube (122) is inserted into the first transmission hole. The transmission tube (122) can form a transmission engagement with the inner wall of the first transmission hole or the second transmission hole. One end of the first connecting rod (121) is inserted into the transmission tube (122).

6. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 5, characterized in that: The cylinder (101) is provided with a mounting plate (118), the third transmission wheel (120) and the second reel (146) are respectively connected to the mounting plate (118), the mounting plate (118) is provided with a first electromagnet, the transmission tube (122) is provided with a first magnetic plate (124), one end of the first connecting rod (121) is provided with a first spring (123), one end of the first spring (123) abuts against the inner wall of the transmission tube (122), when the first electromagnet is energized, it generates a magnetic force that attracts the first magnetic plate (124) to move the transmission tube (122) from the first transmission hole to the second transmission hole.

7. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 6, characterized in that: The guide hole has a movable groove on its side wall, and a movable block (150) and a limiting block (151) are provided in the movable groove. The movable block (150) and the limiting block (151) are connected by a second spring (153). The movable block (150) and the inner wall of the movable groove are connected by a third spring (152). The top of the limiting block (151) has an inclined groove. The guide rod (144) has multiple limiting grooves (149) corresponding to the limiting block (151). The movable block (150) is provided with a second connecting rod (145), which extends out of the cylinder (101). The cylinder (101) is provided with a through groove for the second connecting rod (145) to move. The second connecting rod (145) is provided with a second magnetic plate (126), which is located on one side of the first electromagnet. When the first electromagnet is energized, it generates a magnetic force that repels the second magnetic plate (126).

8. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 7, characterized in that: The cylinder (101) is provided with a support plate (125), the support plate (125) is provided with a through hole, the transmission tube (122) passes through the through hole, the transmission tube (122) is provided with a protrusion (154) on the side wall, and the through hole is provided with a slot (155) corresponding to the protrusion (154) on the side wall. When the first electromagnet is energized, the protrusion (154) rotates with the transmission tube (122) until it is aligned with the slot (155), and the transmission tube (122) moves toward the third transmission wheel (120). The bottom of the clamping block (103) is provided with a fourth spring (148), and the bottom end of the fourth spring (148) abuts against the clamping table (102).

9. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 8, characterized in that: The cylinder (101) is provided with a mounting base (128), the motor (116) is mounted on the mounting base (128), the bottom of the motor (116) is provided with a slider (129), the bottom of the mounting base (128) is provided with a sliding groove for the slider (129) to move, the slider (129) is provided with a fifth spring (130), one end of the fifth spring (130) abuts against the inner wall of the sliding groove, one end of the sliding groove is provided with a second electromagnet, and the slider (129) is provided with a magnetic block; the motor (116) is a dual-shaft motor, and the two output shafts of the motor (116) are respectively fitted with transmission sleeves (117).

10. The adjustable electric fixed-length pruning device for forest tree breeding according to claim 1, characterized in that: It also includes a handheld handle (106), which has a connecting groove. The cylinder (101) has a connecting block, and the connecting block has a connecting wheel (107), which is rotatably connected to the connecting groove. The handheld handle (106) has a transmission cavity (114), and the transmission cavity (114) has a fourth transmission wheel (133). The connecting wheel (107) and the fourth transmission wheel (133) are connected by a synchronous belt (132). The side wall of the transmission cavity (114) has a transmission groove (134), and the transmission groove (134) has a transmission block (135) that is connected to the synchronous belt (132). The transmission block (135) has a push plate (136).

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