A forestry branch pruning device

Abstract

This invention discloses a forestry branch pruning device, comprising: an electric pruning saw and an extension rod, the extension rod being connected to the electric pruning saw to increase the handle length of the electric pruning saw for pruning branches at higher locations; a storage box for holding the electric pruning saw and the extension rod; a cover plate for covering the storage box to seal it; and a support frame, one end of which is rotatably connected to the cover plate, and the other end having a ball joint. When the support frame is rotated around the connection point to a state perpendicular to the surface of the cover plate, the middle part of the extension rod is connected to the support frame through the ball joint, thereby forming a fulcrum on the extension rod to reduce the force applied to lift the extension rod. This application uses a rotatable support frame to form a force-bearing fulcrum, reducing the lifting force, while also achieving centralized storage of the equipment, reducing operator fatigue, and improving the convenience of forestry pruning operations.

Description

Technical Field

[0001] This invention belongs to the field of forest tree breeding technology, and in particular relates to a forestry branch pruning device. Background Technology

[0002] In forestry maintenance and landscaping operations, frequent pruning and shaping of high branches and miscellaneous twigs are necessary to ensure healthy tree growth and adequate ventilation and light penetration within the forest. Electric pruning saws, with their powerful cutting force and ease of operation, are widely used for branch pruning. To meet the needs of pruning high branches, extended telescopic rods are commonly available to extend the operating handle, allowing workers to cut branches at heights without climbing. However, in actual forestry outdoor work environments, existing extended pruning devices still suffer from problems such as laborious operation, lack of support structure, and inconvenient storage and portability, making them unsuitable for long-term, large-scale forestry pruning work.

[0003] Currently, traditional forestry branch pruning devices have a simple structural design, mostly consisting of a pruning saw and a simple extension rod. However, they suffer from numerous technical defects in actual operation, as detailed below: Firstly, the traditional telescopic pole has a longer overall length and cantilever when extended. When pruning branches at heights, workers need to hold the end of the extended pole the entire time, and the weight of the pole plus the weight of the pruning saw are all borne by their hands. Prolonged work can easily cause arm pain and limb fatigue, resulting in high manual labor intensity and low work efficiency.

[0004] Secondly, existing pruning equipment lacks a dedicated support structure. During the pruning process, the extension rod is suspended without support, and the staff needs to continuously apply lifting force to maintain the cutting angle. Especially when pruning thick branches and high branches, the force torque is large, lifting is difficult, and the physical requirements for operators are high, making it unsuitable for long-term continuous operation.

[0005] Third, traditional pruning saws and extension poles are often scattered and lack dedicated storage boxes. They are easily bumped and scratched during outdoor transportation and handling, causing wear on the saw blades and deformation of the poles. Moreover, scattered placement makes it easy to lose parts and the storage is messy, which is not conducive to carrying and storing them in the field of forestry operations.

[0006] Fourth, most pruning equipment with support structures uses rigid fixed supports, which cannot be flexibly adjusted. Tree branches grow at random angles, and rigid supports cannot adapt to different pruning postures, which can easily cause the poles to get stuck, the operation to be not smooth, and the adaptability is poor.

[0007] In summary, existing forestry pruning devices suffer from problems such as laborious high-altitude pruning, high manual labor intensity, lack of effort-saving fulcrums, poor storage and protection, and inflexible angle adjustment, failing to meet the needs of large-area, long-term outdoor forestry pruning operations. Therefore, there is an urgent need to develop a forestry pruning device with a flip-up support frame, a ball-head universal force-saving fulcrum, and storage capabilities. The flip-up support frame would create a force-bearing fulcrum, reducing the lifting force, while simultaneously enabling centralized storage, reducing operator fatigue, and improving the convenience of forestry pruning operations. 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 a forestry branch pruning device.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: a forestry branch pruning device, comprising: An electric pruning saw is used to trim tree branches; The extension pole is a telescopic pole that is connected to the electric pruning saw to increase the handle length of the electric pruning saw for pruning branches at higher locations. Storage box for storing electric pruning saws and extension poles; A cover plate is placed over the storage box to seal it. The support frame is rotatably connected to the cover plate at one end and has a ball joint at the other end. When the support frame is rotated around the connection point to a state perpendicular to the surface of the cover plate, the middle part of the extension rod is connected to the support frame through the ball joint, thereby forming a fulcrum on the extension rod to reduce the force applied to lift the extension rod.

[0011] Furthermore, the support frame includes a first support rod and a second support rod. The first support rod is provided with a first movable groove, and the second support rod is inserted into the first movable groove and can move along the inner wall of the first movable groove. The ball joint includes a connecting seat, a spherical part, and a connecting member. The connecting seat is located at one end of the support rod, the spherical part is located in the connecting seat and can rotate in the connecting seat, and the connecting member is located on the spherical part to connect the extension rod.

[0012] Furthermore, the cover plate is provided with a connecting block and a first support block. One end of the first support rod is provided with a first protrusion, which is rotatably connected to the connecting block. The first support block is located on one side of the connecting block. The first protrusion is provided with a second movable groove, and a fixing rod is provided in the second movable groove. The cover plate is provided with a fixing hole corresponding to the fixing rod, and the fixing hole and the first support block are arranged adjacent to each other.

[0013] Furthermore, the first support rod is provided with a third movable groove that communicates with the second movable groove, the fixed rod is provided with a first push plate that extends out of the third movable groove, the side wall of the third movable groove is provided with a fourth movable groove, the fourth movable groove is provided with a first fixed block, the first fixed block is provided with a second push plate and a first spring, one end of the first spring is fixed to the inner wall of the fourth movable groove, and the second push plate extends out of the fourth movable groove.

[0014] Furthermore, the second support rod is provided with a guide block, the side wall of the first movable groove is provided with a guide groove for the guide block to move, the second support rod is provided with a threaded hole, a fixing screw passes through the threaded hole, the inner wall of the first movable groove is provided with a fixing groove corresponding to the fixing screw; one end of the threaded hole is provided with a cavity, the side wall of the cavity is provided with a fifth movable groove, the fifth movable groove is provided with a turntable, the turntable is provided with a push rod and a limiting rod, the push rod passes through the cavity, the side wall of the first movable groove is provided with a limiting groove corresponding to the limiting rod; the fixing screw is provided with a third push plate, the third push plate is located in the cavity.

[0015] Furthermore, the first support rod has a sixth movable groove on its side wall, a movable block is provided in the sixth movable groove, a seventh movable groove is provided on the movable block, two sets of rotating wheels are provided in the seventh movable groove, and a third support rod is provided on the rotating wheels; the movable block has a first helical tooth on its side wall, a toothed plate is provided on the inner wall of the sixth movable groove, and a second helical tooth is provided on the toothed plate, the inclined surface of the first helical tooth is set in the opposite direction to the inclined surface of the second helical tooth.

[0016] Furthermore, a transmission rod is provided in the seventh movable groove, which is located between the two sets of rotating wheels and drives the two sets of rotating wheels. A first through groove is provided at the top of the seventh movable groove, and the transmission rod passes through the first through groove. A limiting plate is provided at the top of the limiting rod. An eighth movable groove is provided on the side wall of the sixth movable groove, and a fourth push plate is provided on the limiting plate, which passes through the eighth movable groove.

[0017] Furthermore, the inner wall of the seventh movable groove is provided with a ninth movable groove, the ninth movable groove is provided with a second support block, the bottom of the second support block is provided with a first inclined groove, the second support block is provided with a first slider, the side wall of the ninth movable groove is provided with a first sliding groove for the first slider to move, the first slider is provided with a second spring; one end of the second support block is provided with an end block, the end block is provided with a second through groove, the inner wall of the second through groove is provided with a guide block, the fourth push plate is provided with a movable plate, the movable plate is provided with an extension rod, and the extension rod is slidably connected to the fourth push plate.

[0018] Furthermore, the top of the movable block is provided with an insert block, the limiting plate is provided with a slot, the insert block is provided with a second fixing block, the second fixing block is provided with a second slider and a second inclined groove, the second slider is located at the bottom of the second fixing block, the second inclined groove is located at the top of the second fixing block, the movable block is provided with a second sliding groove for the second slider to move, the second slider is provided with a third spring; the movable block is provided with a push block, the push block is provided with an extension plate, the extension plate is provided with a pull rope, one end of the pull rope is fixed to the second slider, the sixth movable groove is provided with a stop block, the stop block is located above the push block, and the push block and the limiting plate are staggered.

[0019] Furthermore, a tenth movable groove is provided on the side wall of the sixth movable groove, and a toothed plate is provided in the tenth movable groove. Multiple fourth springs are provided on the toothed plate, and one end of the third spring is fixedly connected to the tenth movable groove. An extension plate is provided on the side wall of the toothed plate, and the extension plate extends from the sixth movable groove to the side wall of the first support rod. A knob is rotatably connected to the side wall of the first support rod, and a second protrusion is provided on the knob. A third through groove is provided on the extension plate, and the knob is located in the third through groove.

[0020] The advantages of this invention are: The support frame of this device can be flipped to a position perpendicular to the cover plate, supporting the middle of the extension rod. It uses the lever principle to form a stable force fulcrum, distributing the weight of the extension rod and the electric pruning saw. It eliminates the need for workers to hold the end of the rod throughout the process, effectively reducing the lifting force required to raise the extension rod, alleviating arm pain and limb fatigue caused by long-term work, reducing manual physical exertion, and improving continuous work capability.

[0021] The support frame is equipped with a ball joint at the end, and the extension rod is connected to the ball joint, which can achieve free micro-adjustment at multiple angles. Unlike the traditional rigid fixed support structure, it can adapt to the pruning conditions of messy tree branches and different growth angles, avoid the problems of rod jamming and stiff operation, and make the pruning posture flexible and smooth, improving the pruning adaptability of complex branches.

[0022] This device features a separate storage box for the electric pruning saw and extension rod, which, along with a cover, provides enclosed storage. This effectively prevents damage to the saw blade and rod during outdoor transport and storage, avoids the loss of parts, and provides excellent protection for the equipment. Furthermore, the compact design after storage facilitates handling, carrying, and storage during field forestry operations.

[0023] The extension pole is a telescopic pole structure, and the length of the pole can be flexibly adjusted according to the height of the branches. Workers can complete high-level branch pruning without climbing, avoiding the safety risks of working at height. It can adapt to branch pruning operations at different heights and positions, with a wide range of applications, meeting various operational scenarios in landscaping and forestry maintenance.

[0024] This device integrates the support structure, storage structure, and pruning structure into one integrated design. The support frame can be flipped up for storage without taking up extra space, and the structure is simple and compact. The whole device has no complex transmission components, making it easy to manufacture and cost-effective. It is also easy to operate and suitable for mass production and use by forestry workers, demonstrating excellent practicality and economy. Attached Figure Description

[0025] 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.

[0026] 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.

[0027] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a forestry branch pruning device in one embodiment of the present invention.

[0028] Figure 2 for Figure 1 A cross-sectional view of the support frame of the forestry branch pruning device in the illustrated embodiment.

[0029] Figure 3 for Figure 2 Enlarged view of point A in the image.

[0030] Figure 4 for Figure 2 Enlarged view of point B in the image.

[0031] Figure 5 for Figure 2 Enlarged view of point C in the image.

[0032] Figure 6 for Figure 1 A cross-sectional view of the receiving tube of the forestry branch pruning device in the illustrated embodiment.

[0033] Figure 7 for Figure 6 Enlarged view of point D in the image.

[0034] Figure 8 for Figure 6 Enlarged view of point E in the image.

[0035] Figure 9 for Figure 6 Enlarged view of point F in the image.

[0036] Figure 10 for Figure 1 A cross-sectional view of the first fixing block of the forestry branch pruning device in the illustrated embodiment.

[0037] Figure 11 for Figure 10 Enlarged view of point G in the image.

[0038] Figure 12 for Figure 1 A cross-sectional view of the movable block of the forestry branch pruning device in the illustrated embodiment.

[0039] Figure 13 for Figure 12 Enlarged view of point H in the image.

[0040] Figure 14 for Figure 1 A cross-sectional view of the limiting rod of the forestry branch pruning device in the illustrated embodiment.

[0041] Figure 15 for Figure 14 Enlarged view of point I in the image.

[0042] Figure 16 for Figure 1 A cross-sectional view of the second support block of the forestry branch pruning device in the illustrated embodiment.

[0043] Figure 17 for Figure 16 Enlarged view of point J in the image.

[0044] Figure 18 for Figure 16 Enlarged view of point K in the image.

[0045] The meanings of the reference numerals in the figure are as follows: 101. Storage box; 102. Cover plate; 103. First support rod; 104. Second support rod; 105. Extension rod; 106. Electric pruning saw; 107. Third support rod; 108. Magnetic block; 109. Fixing screw; 110. Third push plate; 111. Guide block; 112. Limiting plate; 113. Transmission rod; 114. Fourth push plate; 115. End block; 116. Second through slot; 117. Guide block; 118. Fixing rod; 119. First push plate; 120. First fixing block; 121. Second push plate; 122. First support block; 123. Connecting block; 124. First protrusion; 125. Connecting seat; 126. Spherical part; 127. Connecting plate; 128. First connecting ring; 129. Second 130. Connecting ring; 131. Extension plate; 132. Third through slot; 133. Knob; 134. Second protrusion; 135. Storage tube; 136. Moving block; 137. Pull rod; 138. First spring; 139. Handle; 140. Movable block; 141. Rotary wheel; 142. Insert block; 143. Second fixing block; 144. Second slider; 145. Pull rope; 146. Push block; 147. Extension plate; 148. Fifth spring; 149. Turntable; 150. Limiting rod; 151. Push rod; 152. Limiting slot; 153. Second support block; 154. First slider; 155. Second spring; 156. Toothed plate; 157. Fourth spring; 158. Mounting plate; 159. Caster wheel. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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".

[0050] 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.

[0051] This disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0052] like Figure 1-18 As shown, a forestry branch pruning device includes an electric pruning saw 106, an extension rod 105, a storage box, a cover plate 102, and a support frame. The electric pruning saw 106 is a conventional electric pruning machine, used only for pruning tree branches. The extension rod 105 is a telescopic rod connected to the electric pruning saw 106 to increase the handle length of the electric pruning saw 106 for pruning branches at higher elevations. The storage box is used to hold the electric pruning saw 106 and the extension rod 105. The cover plate 102 is placed on the storage box to close it. One end of the support frame is rotatably connected to the cover plate 102, and the other end is equipped with a ball joint. When the support frame is rotated around the connection point to a state perpendicular to the surface of the cover plate 102, the middle part of the extension rod 105 is connected to the support frame through the ball joint, thereby forming a fulcrum on the extension rod 105 to reduce the force required to lift the extension rod 105.

[0053] During operation, first open the storage box, take out the electric pruning saw 106 and the extension rod 105 and assemble them. Then flip the support frame over, turning it from the inside of the cover plate 102 to above the cover plate 102, so that the support frame is perpendicular to the surface of the cover plate 102. At this time, insert the assembled extension rod 105 into the ball joint connector for fixation. The operator holds the end of the extension rod 105 away from the electric pruning saw 106 and can then lift the extension rod 105 to prune the high branches. During operation, the lower end of the support frame uses the cover plate 102 and the storage box as a load-bearing base. The support frame forms a stable fulcrum in the middle of the extension rod 105. Utilizing the lever principle, the weight of the extension rod 105 and the electric pruning saw 106 is transferred to the storage box through the support frame. This eliminates the need for operators to lift the entire rod throughout the process, significantly reducing the force required to lift the rod and alleviating operator fatigue. When the branch growth angle changes, the extension rod 105 can be rotated directly, causing the ball joint 126 to rotate within the connecting seat 125 to adjust the pruning angle. This allows for flexible fine-tuning of the posture, adapting to the pruning needs of branches with different growth directions and avoiding operational jamming. After pruning, the extension rod 105 is removed from the ball joint. After retracting the telescopic rod, the electric pruning saw 106 and the extension rod 105 are placed inside the storage box. The support frame is then flipped back inside the cover plate 102, and the cover plate 102 is closed to complete the overall enclosed storage, facilitating transport and preventing damage to the equipment.

[0054] Specifically, the support frame includes a first support rod 103 and a second support rod 104. The first support rod 103 is provided with a first movable groove, and the second support rod 104 is inserted into the first movable groove and can move along the inner wall of the first movable groove. By adjusting the length of the second support rod 104 extending out of the first movable groove, the overall height of the support frame can be changed to adapt to the support needs of different positions of the extension rod 105, adjust the position of the labor-saving fulcrum, adapt to different working habits and trimming heights, and further optimize the labor-saving effect.

[0055] The ball joint includes a connecting seat 125, a spherical part 126, and a connector. The connecting seat 125 is located at one end of the support rod, the spherical part 126 is located within the connecting seat 125 and can rotate within it, and the connector is located on the spherical part 126 to connect the extension rod 105. The connector includes a connecting plate 127, a first connecting ring 128, and a second connecting ring 129. The first and second connecting rings 128 and 129 have a semi-circular ring structure. The connecting plate 127 fixes the first connecting ring 128 to the spherical part 126, and the first and second connecting rings 128 and 129 are connected by screws. After the extension rod 105 passes through the annular cavity formed by the first and second connecting rings 128 and 129, tightening the screws will fix the extension rod 105 to the connector. The connection method is simple and secure, and the disassembly and assembly are convenient and quick, enabling rapid completion of pre-trimming preparations.

[0056] The cover plate 102 is provided with a connecting block 123 and a first support block 122. One end of the first support rod 103 is provided with a first protrusion 124, which is rotatably connected to the connecting block 123. The first support block 122 is located on one side of the connecting block 123. The first protrusion 124 is provided with a second movable groove, and a fixing rod 118 is provided in the second movable groove. The cover plate 102 is provided with a fixing hole corresponding to the fixing rod 118, and the fixing hole and the first support block 122 are arranged adjacent to each other. When the first support rod 103 is flipped to a position perpendicular to the cover plate 102, the second movable groove aligns perfectly with the fixing hole. Pushing the fixing rod 118 along the second movable groove and inserting it into the fixing hole locks the rotational position of the first support rod 103, ensuring the support frame remains vertical and preventing accidental deflection or swaying, thus improving the stability of the support structure. When the support frame needs to be stored, the fixing rod 118 is pulled out of the fixing hole, allowing the first support rod 103 to be flipped to a horizontal position for storage. The operation is simple and smooth. When the first support rod 103 is flipped to a vertical position, it rests against the first support block 122, working in conjunction with the fixing rod 118 to provide a fixing effect, further enhancing the structural stability in the vertical support state and preventing the first support rod 103 from deflecting backward under force, ensuring the reliable fixation of the support fulcrum position.

[0057] The first support rod 103 is provided with a third movable groove that communicates with the second movable groove. The fixed rod 118 is provided with a first push plate 119, which extends out of the third movable groove. The side wall of the third movable groove is provided with a fourth movable groove. The fourth movable groove is provided with a first fixed block 120. The first fixed block 120 is provided with a second push plate 121 and a first spring 137. One end of the first spring 137 is fixed to the inner wall of the fourth movable groove. The second push plate 121 extends out of the fourth movable groove. When the fixing rod 118 is inserted into the fixing hole, the first fixing block 120 pops out under the push of the first spring 137, abutting against the top of the first push plate 119, restricting the fixing rod 118 from sliding accidentally along the third movable groove, preventing the fixing rod 118 from coming out of the fixing hole on its own, and ensuring the stability of the locking state; when it is necessary to unlock, first push the second push plate 121 inward along the fourth movable groove, so that the first fixing block 120 retracts into the fourth movable groove, releasing the restriction on the first push plate 119, and then pull the first push plate 119 to pull the fixing rod 118 out of the fixing hole, making the unlocking operation simple and convenient.

[0058] The second support rod 104 is provided with a guide block 111. The side wall of the first movable groove is provided with a guide groove for the guide block 111 to move. The second support rod 104 is provided with a threaded hole, and a fixing screw 109 passes through the threaded hole. The inner wall of the first movable groove is provided with a fixing groove corresponding to the fixing screw 109. One end of the threaded hole is provided with a cavity. The side wall of the cavity is provided with a fifth movable groove. The fifth movable groove is provided with a turntable 149. The turntable 149 is provided with a push rod 151 and a limiting rod 150. The push rod 151 passes through the cavity. The side wall of the first movable groove is provided with a limiting groove 152 corresponding to the limiting rod 150. The fixing screw 109 is provided with a third push plate 110, which is located in the cavity. The guide block 111 and the guide groove cooperate to guide the movement of the second support rod 104, preventing the second support rod 104 from deflecting and wobbling when moving along the first movable groove, and ensuring a smooth and stable extension and retraction adjustment process. When it is necessary to fix the extension length of the second support rod 104, tighten the fixing screw 109. The fixing screw 109 is screwed inward along the threaded hole. During the process, the third push plate 110 moves inward together with the fixing screw 109, pushing the push rod 151 to move towards the side wall of the first movable groove in the cavity. This causes the turntable 149 to deflect in the fifth movable groove, pushing the limiting rod 150 to extend out of the fifth movable groove and insert into the corresponding limiting groove 152. This achieves double locking of the second support rod 104 and the first support rod 103, further improving the fixing strength of the structure after telescoping, preventing the second support rod 104 from accidentally retracting during the support process, and ensuring that the support height is stable and reliable.

[0059] Furthermore, a sixth movable groove is provided on the side wall of the first support rod 103, a movable block 139 is provided in the sixth movable groove, a seventh movable groove is provided on the movable block 139, two sets of rotating wheels 140 are provided in the seventh movable groove, and a third support rod 107 is provided on the rotating wheel 140; a first helical tooth is provided on the side wall of the movable block 139, a toothed plate 156 is provided on the inner wall of the sixth movable groove, and a second helical tooth is provided on the toothed plate 156. The inclined surface of the first helical tooth is set in the opposite direction to the inclined surface of the second helical tooth. In this embodiment, the inclined surface of the first helical tooth is set at the bottom, and the inclined surface of the second helical tooth is set at the top. When in use, the rotating wheel 140 rotates, causing the third support rod 107 to extend from the sixth movable slot. The movable block 139 is then pushed towards the bottom of the sixth movable slot, causing the bottom end of the third support rod 107 to rest against the ground. The third support rod 107 provides support to the other two sides of the support frame, preventing it from tipping over and further improving the structural stability and load-bearing capacity of the entire support frame, making the fulcrum more stable. When storage is required, pulling the movable block 139 upwards will retract the third support rod 107 back into the sixth movable slot, without occupying extra space or affecting the overall flipping and storage operation of the support frame. The cooperation of the first helical tooth and the toothed plate 156 ensures that the movable block 139 can only move downwards and cannot return to its original position, guaranteeing the supporting effect of the third support rod 107 on the support frame.

[0060] A transmission rod 113 is installed in the seventh movable slot, positioned between the two sets of rotating wheels 140 and engaging with them in a transmission manner. A first through slot is located at the top of the seventh movable slot, through which the transmission rod 113 passes. A limiting plate 112 is located at the top of the limiting rod 150. An eighth movable slot is located on the side wall of the sixth movable slot, with a fourth push plate 114 extending from the eighth movable slot onto the limiting plate 112. Pressing down on the fourth push plate 114 moves the limiting plate 112 downwards relative to the movable block 139, pushing the transmission rod 113 downwards along the first through slot. This causes the two sets of rotating wheels 140 to rotate synchronously, allowing the two third support rods 107 to extend synchronously out of the sixth movable slot. This single-step operation allows for the synchronous extension of both support rods, simplifying the operation and increasing adjustment efficiency. When the third support rod 107 needs to be retracted, the fourth push plate 114 is pulled upwards, causing the transmission rod 113 to move upwards relative to the movable block 139, which in turn causes the rotating wheel 140 to rotate in the opposite direction, thus retracting the third support rod 107 back into the seventh movable slot. The limiting plate 112 limits the maximum distance the transmission rod 113 can descend, thereby limiting the maximum angle of rotation of the third support rod 107, preventing the third support rod 107 from rotating while providing support, and ensuring the stability of the support frame.

[0061] Furthermore, the inner wall of the seventh movable groove is provided with a ninth movable groove, and the ninth movable groove is provided with a second support block 153. The bottom of the second support block 153 is provided with a first inclined groove, and the second support block 153 is provided with a first slider 154. The side wall of the ninth movable groove is provided with a first sliding groove for the first slider 154 to move, and the first slider 154 is provided with a second spring 155. One end of the second support block 153 is provided with an end block 115, and the end block 115 is provided with a second through groove 116. The inner wall of the second through groove 116 is provided with a guide block 117. The fourth push plate 114 is provided with a movable plate, and the movable plate is provided with an extension rod, which is slidably connected to the fourth push plate 114.

[0062] The top of the movable block 139 is provided with an insert block 141, and the limiting plate 112 is provided with a slot. The insert block 141 is provided with a second fixing block 142, and the second fixing block 142 is provided with a second slider 143 and a second inclined groove. The second slider 143 is located at the bottom of the second fixing block 142, and the second inclined groove is located at the top of the second fixing block 142. The movable block 139 is provided with a second sliding groove for the second slider 143 to move, and the second slider 143 is provided with a third spring 144. The movable block 139 is provided with a push block 146, and the push block 146 is provided with an extension plate 147. The movable block 139 is provided with a movable cavity for the extension plate 147 to move. The extension plate 147 is provided with a pull rope 145 and a fifth spring 148. The fifth spring 148 is located at the bottom of the extension plate 147, and one end of the pull rope 145 is fixed to the second slider 143. A stop block is provided in the sixth movable groove. The stop block is located above the push block 146, and the push block 146 and the limiting plate 112 are staggered.

[0063] When using the support frame, after flipping the first support rod 103 to a position perpendicular to the top surface of the cover plate 102, push the fourth push plate 114 downwards. At this time, the movable block 139 is on the second support block 153. The fourth push plate 114 drives the limiting plate 112 to move. The transmission rod 113 moves relative to the movable block 139, driving the rotating wheel 140 to rotate. This causes the third support rod 107, which is in the sixth movable groove, to rotate out of the sixth movable groove due to the rotation of the rotating wheel 140. When the limiting plate 112 moves to the top of the movable block 139, the insert block 141 is inserted into the slot. The bottom surface of the limiting plate 112 abuts against the second inclined groove of the second fixed block 142, pushing the fixed block to move so that the insert block 141 is normally inserted into the slot. When the insert block 141 is fully inserted into the slot, the third spring 144 pushes the second slider 143 to reset, and the second fixed block 142 partially moves to the limiting plate. The top of 112 fixes the limiting plate 112 to the movable block 139, preventing the limiting plate 112 from moving relative to the movable block 139, thereby fixing the third support rod 107 in the open state. After the limiting plate 112 can no longer move, it pushes the movable plate relative to the fourth push plate 114. The extension rod moves along the side wall of the fourth push plate 114, and the movable plate is inserted into the second through slot 116. The bottom of the movable plate abuts against the guide block 117, thereby pushing the end block 115 to move. The end block 115 drives the second support block 153 to move into the ninth movable slot. At this time, the fourth push plate 114 is pushed again, and the fourth push plate 114 drives the movable block 139 to move towards the bottom of the sixth movable slot, so that the third support rod 107 extending from the sixth movable slot descends to contact the ground, providing support force for the support frame from the other two directions and ensuring the stability of the support frame.

[0064] The sixth movable groove has a tenth movable groove on its side wall. The toothed plate 156 is located in the tenth movable groove. The toothed plate 156 has multiple fourth springs 157. One end of the third spring 144 is fixedly connected to the tenth movable groove. The toothed plate 156 has an extension plate 130 on its side wall. The extension plate 130 extends from the sixth movable groove to the side wall of the first support rod 103. The first support rod 103 has a knob 132 rotatably connected to its side wall. The knob 132 has a second protrusion 133. The extension plate 130 has a third through groove 131. The knob 132 is located in the third through groove 131.

[0065] When the support frame needs to be stored, rotating knob 132 causes the second protrusion 133 to abut against the inner wall of the third through groove 131. The second protrusion 133 pushes the extension plate 130 to move, and the extension plate 130 drives the toothed plate 156 to move into the tenth movable groove, causing the first and second helical teeth to separate. This pushes the fourth push plate 114 towards the top of the sixth movable groove. Since the limiting plate 112 is fixed on the movable block 139, the fourth push plate 114 directly drives the movable block 139 to move towards the top of the sixth movable groove. When the limiting plate 112 moves to the bottom of the second support block 153, it abuts against the first helical groove at the bottom of the second support block 153. The limiting plate 112 pushes the second support block 153 into the ninth movable groove, causing the movable plate to... As the device moves upward normally, the movable block 139 moves to the bottom of the stop block, and the push block 146 abuts against the stop block. The movable block 139 moves relative to the push block 146, causing the push block 146 to move into the movable cavity. The extension plate 147 moves with the push block 146, pulling the pull rope 145. The pull rope 145 pulls the second slider 143, causing the second fixed block 142 to move to the top of the insert block 141, releasing the fixed connection between the limiting plate 112 and the movable block 139. When the fourth push plate 114 is pushed upward, the limiting plate 112 moves relative to the movable block 139. The transmission rod 113 drives the rotating wheel 140 to rotate, storing the third support rod 107 into the sixth movable slot, reducing the space occupied by the support frame and making it easier to store the support frame.

[0066] The bottom of the sixth movable slot is equipped with a partition that divides the sixth movable slot into left and right sides. At the same time, the partition limits the maximum descent distance of the movable block 139, so that the third support rod 107 forms a stable support with the ground.

[0067] The cover plate 102 is equipped with a magnetic block 108. When the support frame is stored, the second support rod 104 retracts into the first movable groove on the first support rod 103, and flips the first support rod 103 so that the first support rod 103 fits against the cover plate 102. The magnetic block 108 attracts the first support rod 103 to prevent the first support rod 103 from accidentally flipping open after storage, which facilitates the overall storage operation and keeps the storage state stable.

[0068] The bottom of the storage box 101 has multiple receiving slots, and a mounting plate 158 is rotatably connected to each receiving slot. Casters 159 are attached to the mounting plate 158. When the support frame needs to be moved during use, the casters 159 are rotated out of the receiving slots, allowing the entire storage box to be moved directly by the casters 159, eliminating the need for manual handling. After moving the box into position, the casters 159 are flipped back into the receiving slots, ensuring the bottom of the storage box is directly in contact with the ground, improving stability and preventing accidental slippage during trimming operations.

[0069] The bottom of the storage box 101 is also equipped with a storage tube 134. A moving block 135 is slidably connected inside the storage tube 134. A pull rod 136 is rotatably connected to the moving block 135. After the pull rod 136 is rotated out, the user can hold the pull rod 136 and pull the storage box. With the help of the casters 159, the physical exertion during movement is further reduced. After the movement is completed, the pull rod 136 is rotated back and the moving block 135 is pushed back into the storage tube 134. It will not occupy the external space of the storage box. The overall structure design is compact and reasonable.

[0070] The storage box has a handle 138 on its side wall. After the extension rod 105 and the electric pruning saw 106 are stored in the storage box, the storage box can be carried directly by holding the handle 138. This makes it more flexible and convenient for short-distance transfers or up-and-down transport. When not in use, the handle 138 can naturally fit against the side wall of the storage box without any additional protrusion or bumps, further optimizing the storage and user experience.

[0071] Overall, this forestry branch pruning device provides a stable and labor-saving support point for the extension pole 105 through the support frame, which can be adapted to different pruning heights and working habits. Multiple locking structures ensure stable support. After storage, the overall structure is compact and easy to carry and transfer, which greatly reduces the labor intensity of high-altitude pruning operations and improves operational safety and pruning efficiency.

[0072] 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. A forestry branch pruning device, characterized in that: include: Electric pruning saw (106) for pruning tree branches; An extension rod (105) is a telescopic rod, which is connected to the electric pruning saw (106) to increase the handle length of the electric pruning saw (106) for pruning branches at higher locations. A storage box for storing the electric pruning saw (106) and the extension rod (105); A cover plate (102) is placed over the storage box to close the storage box; The support frame is rotatably connected to the cover plate (102) at one end and has a ball joint at the other end. When the support frame is rotated around the connection point to a state perpendicular to the surface of the cover plate (102), the middle part of the extension rod (105) is connected to the support frame through the ball joint, thereby forming a fulcrum on the extension rod (105) to reduce the applied force to lift the extension rod (105).

2. The forestry branch pruning device according to claim 1, characterized in that: The support frame includes a first support rod (103) and a second support rod (104). The first support rod (103) is provided with a first movable groove. The second support rod (104) is inserted into the first movable groove and can move along the inner wall of the first movable groove. The ball joint includes a connecting seat (125), a spherical part (126), and a connector. The connecting seat (125) is located at one end of the support rod. The spherical part (126) is located in the connecting seat (125) and can rotate in the connecting seat (125). The connector is located on the spherical part (126) to connect the extension rod (105).

3. The forestry branch pruning device according to claim 2, characterized in that: The cover plate (102) is provided with a connecting block (123) and a first support block (122). One end of the first support rod (103) is provided with a first protrusion (124), which is rotatably connected to the connecting block (123). The first support block (122) is located on one side of the connecting block (123). The first protrusion (124) is provided with a second movable groove, and a fixing rod (118) is provided in the second movable groove. The cover plate (102) is provided with a fixing hole corresponding to the fixing rod (118), and the fixing hole and the first support block (122) are arranged adjacent to each other.

4. The forestry branch pruning device according to claim 3, characterized in that: The first support rod (103) is provided with a third movable groove that communicates with the second movable groove. The fixed rod (118) is provided with a first push plate (119). The first push plate (119) extends out of the third movable groove. The side wall of the third movable groove is provided with a fourth movable groove. The fourth movable groove is provided with a first fixed block (120). The first fixed block (120) is provided with a second push plate (121) and a first spring (137). One end of the first spring (137) is fixed to the inner wall of the fourth movable groove. The second push plate (121) extends out of the fourth movable groove.

5. The forestry branch pruning device according to claim 2, characterized in that: The second support rod (104) is provided with a guide block (111), and the side wall of the first movable groove is provided with a guide groove for the guide block (111) to move. The second support rod (104) is provided with a threaded hole, and a fixing screw (109) passes through the threaded hole. The inner wall of the first movable groove is provided with a fixing groove corresponding to the fixing screw (109). One end of the threaded hole is provided with a cavity, and the side wall of the cavity is provided with a fifth movable groove. The fifth movable groove is provided with a turntable (149), and the turntable (149) is provided with a push rod (151) and a limiting rod (150). The push rod (151) passes through the cavity, and the side wall of the first movable groove is provided with a limiting groove (152) corresponding to the limiting rod (150). The fixing screw (109) is provided with a third push plate (110), and the third push plate (110) is located in the cavity.

6. The forestry branch pruning device according to claim 2, characterized in that: The first support rod (103) has a sixth movable groove on its side wall, a movable block (139) in the sixth movable groove, a seventh movable groove on the movable block (139), two sets of rotating wheels (140) in the seventh movable groove, and a third support rod (107) on the rotating wheel (140); the movable block (139) has a first helical tooth on its side wall, a toothed plate (156) on the inner wall of the sixth movable groove, and a second helical tooth on the toothed plate (156); the inclined surface of the first helical tooth is set in the opposite direction to the inclined surface of the second helical tooth.

7. The forestry branch pruning device according to claim 6, characterized in that: The seventh movable slot is provided with a transmission rod (113), which is located between the two sets of rotating wheels (140) and drives the two sets of rotating wheels (140). The top of the seventh movable slot is provided with a first through slot, and the transmission rod (113) passes through the first through slot. The top of the limiting rod (150) is provided with a limiting plate (112). The side wall of the sixth movable slot is provided with an eighth movable slot. The limiting plate (112) is provided with a fourth push plate (114), which passes through the eighth movable slot.

8. The forestry branch pruning device according to claim 7, characterized in that: The inner wall of the seventh movable groove is provided with a ninth movable groove, and the ninth movable groove is provided with a second support block (153). The bottom of the second support block (153) is provided with a first inclined groove, and the second support block (153) is provided with a first slider (154). The side wall of the ninth movable groove is provided with a first sliding groove for the first slider (154) to move. The first slider (154) is provided with a second spring (155). One end of the second support block (153) is provided with an end block (115), and the end block (115) is provided with a second through groove (116). The inner wall of the second through groove (116) is provided with a guide block (117). The fourth push plate (114) is provided with a movable plate, and the movable plate is provided with an extension rod. The extension rod is slidably connected to the fourth push plate (114).

9. The forestry branch pruning device according to claim 7, characterized in that: The movable block (139) has an insert (141) at its top, and the limiting plate (112) has a slot. The insert (141) has a second fixing block (142), and the second fixing block (142) has a second slider (143) and a second inclined groove. The second slider (143) is located at the bottom of the second fixing block (142), and the second inclined groove is located at the top of the second fixing block (142). The movable block (139) has a first... The second slide groove has a third spring (144) on the second slider (143); the movable block (139) has a push block (146), the push block (146) has an extension plate (147), the extension plate (147) has a pull rope (145), one end of the pull rope (145) is fixed to the second slider (143), the sixth movable groove has a stop block, the stop block is above the push block (146), and the push block (146) and the limiting plate (112) are staggered.

10. The forestry branch pruning device according to claim 6, characterized in that: The sixth movable groove has a tenth movable groove on its side wall. The toothed plate (156) is located in the tenth movable groove. The toothed plate (156) has multiple fourth springs (157). One end of the third spring (144) is fixedly connected to the tenth movable groove. The toothed plate (156) has an extension plate (130) on its side wall. The extension plate (130) extends from the sixth movable groove to the side wall of the first support rod (103). The first support rod (103) has a knob (132) rotatably connected to its side wall. The knob (132) has a second protrusion (133). The extension plate (130) has a third through groove (131). The knob (132) is located in the third through groove (131).

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