A telescopic electric pole saw

Abstract

The utility model relates to a telescopic electric high branch wire saw and relates to the field of high branch pruning, which comprises a saw bow, a telescopic rod, a driving wire wheel assembly, a saw wire wheel assembly and a handheld driving assembly; during operation, the telescopic rod is extended, the saw bow notch is aimed and the saw wire at the saw bow is placed on the branch to be sawn off, the handheld driving assembly is used to send the one end of the saw wire down from the high branch and hang it on the handheld driving assembly, the motor of the handheld driving assembly is turned on to saw off the branch, then the telescopic rod is retracted and the mechanism is reset using the handheld driving assembly, and the next operation process can be entered; the utility model can use a telescopic carbon fiber rod to connect a sawing component, uses a wire saw as a force application structure for sawing, is more light and handy than existing products, the force application line of the sawing force and the transmission line of the wire saw main body during lifting and feeding are decoupled from each other, so that the telescopic rod top weak part is not broken during force application sawing, and the high branch saw is truly practical.

Description

Technical Field

[0001] This invention relates to a retractable electric high-branch wire saw, particularly a high-branch wire saw for pruning taller fruit trees and harvesting fruit, belonging to the field of agricultural machinery. Background Technology

[0002] Currently, agricultural operations such as pruning branches of tall trees and harvesting fruits from high branches (e.g., durian harvesting) mainly rely on aerial work platforms carrying personnel or manual operations performed by climbers. The vehicle-assisted method suffers from drawbacks: it requires a large work area and cannot be used in densely planted orchards or forests with poor access. Purely manual operations, on the other hand, obviously pose significant safety risks. Furthermore, the need for large vehicles and multiple personnel increases operating costs. In contrast, using a peg saw can avoid these risks and disadvantages. However, existing peg saws mainly fall into two categories: one is a manual peg saw that attaches to a telescopic carbon fiber pole. When extended to a large length, this type of peg saw cannot apply sufficient cutting force to high branches and therefore cannot cut them. Excessive sawing force may cause the tip of the telescopic pole to break. The other type is a peg saw or chainsaw. Due to the bulky mechanical transmission structure of its saw teeth, this type of peg saw cannot extend too far and still requires the use of aerial work platforms for high-branch operations. Therefore, a lightweight high-branch saw that can use a telescopic carbon fiber rod (such as a telescopic rod manufactured with the same technology as a regular fishing rod) to attach sawing parts and apply sufficient sawing force during sawing is particularly necessary for low-cost agricultural operations such as pruning tall trees and harvesting fruits at heights (such as durians). Summary of the Invention

[0003] To address the aforementioned technical problems, this invention provides a retractable electric high-branch wire saw that uses a retractable carbon fiber rod (e.g., a telescopic rod manufactured using the same technology as a conventional fishing rod) to connect the sawing component, allowing the high-branch saw to extend to a sufficiently high position to complete the work. Using a wire saw as the force-applying structure for sawing is lighter and more compact than the chain structure or double-blade structure of a chainsaw. The force application path of the sawing force is decoupled from the force transmission path of the wire saw body during lifting and feeding, ensuring that sufficient sawing force is applied without causing the weakest part at the top of the telescopic rod to break, thus making this high-branch saw truly practical.

[0004] The objectives and effects of this invention are achieved through the following technical solutions:

[0005] A retractable electric high-branch wire saw, characterized in that it comprises a saw bow, a telescopic rod, a drive wire wheel assembly, a wire saw wheel assembly, and a handheld drive assembly; the telescopic rod consists of multiple sections, tapering from top to bottom, and can be manually extended and retracted; the saw bow is mounted on the top of the thinnest section of the telescopic rod, and its interior contains a fixed wire saw wheel, a movable wire saw wheel, and a wire feeding wheel assembly. Since the mechanical structure inside the saw bow does not contain the power components required for sawing branches, it ensures that the entire structure can be lifted by a retractable ordinary carbon fiber rod assembly, even when the saw bow is at the top of the thinnest section; the wire saw wheel assembly is attached to the handheld handle and is detachable, and its interior contains a wire winding wheel; the handheld drive assembly is a separate component and is used by hand; the saw wire for sawing branches is wound orderly around the wire winding wheel, and then sequentially attached to the fixed and movable wire saw wheels, with a wire end loop protruding from the end of the saw wire. Suspended outside the saw bow; the drive spool assembly mainly consists of a drive winding spool housing and a drive winding spool installed inside. One end of the drive winding spool's shaft extends out of the drive winding spool housing and is fixedly connected to a drive winding spool transmission lever. A drive winding spool insertion and positioning hole is coaxially provided on the end face of this end. A circular drive winding spool insertion and positioning female head, coaxial with the drive winding spool, is also fixedly connected to the drive winding spool housing. The drive winding spool transmission lever, the drive winding spool insertion and positioning hole, and the drive winding spool insertion and positioning female head together constitute a drive winding clutch joint structure. This structure can be coupled with the drive winding clutch plug structure provided on the handheld drive assembly to realize the power and motion transmission from the handheld drive assembly to the drive winding spool. The feed drive line is pulled out from the drive winding spool on which it is wound, passes through the inner cavity of the telescopic rod, enters the saw bow, and then winds onto the feed drive wheel of the feed wheel assembly. The saw wire and the wire drive line are relatively independent, which is an important link to decouple the force application line of sawing force from the force transmission line of the saw bow body during lifting and resetting. When the saw wire acts on the branch sawing, the thinnest part of the telescopic rod simply rests on the branch being sawed, without transmitting sawing power.

[0006] A handle is coaxially fixed to the wire winding wheel to enable manual winding and unwinding of the saw wire. The axis of rotation of the fixed wire winding wheel in the saw bow body is parallel to the axis of rotation of the movable wire winding wheel. The axis of rotation of the fixed wire winding wheel is fixed in position relative to the saw bow body and can only rotate around its own axis relative to the saw bow body. The axis of rotation of the movable wire winding wheel is mounted on the saw bow body through a movable slide, allowing it to rotate around its own axis and also to reciprocate in a certain direction relative to the saw bow body in a plane perpendicular to its own axis. The direction of the reciprocating motion is perpendicular to the axis of rotation of the fixed wire winding wheel and the axis of rotation of the movable wire winding wheel. The included angle between the planes is an acute angle not exceeding 45°. This angle requirement ensures that when using the hand-held drive assembly to pull both ends of the saw wire for branch sawing, the movable saw wheel is more easily pulled by the deformed saw wire to perform the aforementioned translational movement. The wire feeding wheel assembly consists of a wire feeding drive wheel and a wire feeding load wheel coaxially and fixedly connected. Its rotation axis is parallel to the rotation axis of the movable saw wheel, fixedly installed relative to the saw bow body, and can only rotate around its own axis. One end of the shaft extends outside the saw bow body and has a wire feeding wheel assembly reset square hole on its end face. The rubber rim of the wire feeding load wheel protrudes outward and is just enough to... Inserted into the pulley groove of the movable saw wheel, a saw wire feeding hole is formed. When the movable saw wheel performs the reciprocating translational motion in the plane perpendicular to its own axis, the size of the saw wire feeding hole will change. When the movable saw wheel moves closest to the axis of the wire feeding wheel assembly, the saw wire feeding hole shrinks to its smallest size, so that the saw wire can be pre-pressed by the rubber rim of the wire feeding load wheel, thereby generating a bidirectional wire feeding action, and the saw wire end hanger cannot pass through the saw wire feeding hole at this time. When the movable saw wheel moves furthest from the axis of the wire feeding wheel assembly, the saw wire feeding hole expands to its largest size, so that the saw wire can move completely freely in the saw wire feeding hole. Sliding; On one side of the wire feed wheel assembly near the saw bow body housing, there is a hole coaxial with the wire feed wheel assembly shaft. A wire feed wheel spring is pre-compressed radially towards the center and installed in this hole. The wire feed wheel spring has an opening. When the wire feed wheel assembly is installed on the saw bow, a locking block fixed to the saw bow body inserts into this opening, preventing the wire feed wheel spring from rotating relative to the saw bow body around the wire feed wheel assembly axis. The torsion spring arm of a pre-compressed angle torsion spring is connected to the shafts of the movable saw wheel and the wire feed wheel assembly respectively. The pre-compressed direction of the angle torsion spring should make the wire feed hole of the saw always maintain a tendency to shrink. Obviously, when not sawing, the angle torsion spring will cause the movable saw wheel to move closer to the wire feeding load wheel, thereby reducing the wire feeding hole so that the movement of the saw wire can be controlled by the wire feeding drive line. When sawing occurs, the deformation of the saw wire under force will cause the movable saw wheel to move away from the wire feeding load wheel, thereby expanding the wire feeding hole. At this time, the link between the wire feeding drive line and the saw wire is completely separated. This is also a key link to achieve the decoupling of the force application line of sawing force and the force transmission line of the saw bow body during lifting and resetting.

[0007] The handheld drive assembly comprises a handheld ring, a handheld drive assembly housing, a drive disc assembly A, a drive disc assembly B, a saw wire pull rod A, and a saw wire pull rod B. The handheld ring is fixed to one end of the handheld drive assembly housing. A battery-powered dual-output shaft geared motor is installed inside the handheld drive assembly housing. The output shafts of the dual-output shaft geared motor extend from opposite sides of the handheld drive assembly housing. Drive disc assembly A and drive disc assembly B are also fixed to these opposite sides of the handheld drive assembly housing. The output shafts of the dual-output shaft geared motor are coaxially fixed to the input gears of drive disc assembly A and drive disc assembly B, respectively. Drive disc assembly A contains an output gear. A gear transmission chain runs from the input gear to the output gear. A drive pin is located on the end face of the output gear, inserting into the pin groove of the pull rod A and reciprocating within the groove. The saw wire pull rod A is part of the saw wire pull rod A. The saw wire pull rod A is mounted on the drive disk assembly A via a sliding sleeve. The output gear of the drive disk assembly A, the transmission pin of the drive disk assembly A, the pin groove of the pull rod A, the saw wire pull rod A, and their mounting structure together constitute a straight groove slider mechanism that is driven by the output gear of the drive disk assembly A. This allows the saw wire pull rod A to reciprocate along its own axis. One end of the saw wire pull rod A that extends out of the drive disk assembly A can be hooked with a saw wire. The axes of the saw wire pull rod A and the saw wire pull rod B are parallel. The internal mechanical structures of the drive disk assembly A and the drive disk assembly B are identical, but the transmission pins of the drive disk assembly A and the drive disk assembly B are arranged with a 180-degree phase difference so that when the saw wire pull rod A is retracted to its shortest length, the saw wire pull rod B is just extended to its longest length. The two ends of the drive motor's extension shaft extend out of the outer shell of the drive disk assembly A and the drive disk assembly B, respectively. One end is provided with a wire feeding wheel set reset square head that can be coupled with the wire feeding wheel set reset square hole.To couple with the drive winding clutch connector structure provided on the drive reel assembly, a drive winding clutch plug structure is provided at the other end of the drive motor extension shaft as follows: A drive winding connector male with a sealed bottom cylindrical shape is coaxially fixed to this end of the drive motor extension shaft (5061). A drive winding spring is pre-compressed radially towards the center and installed in a hole inside the drive winding connector male. A drive reel insertion positioning male, coaxial with the drive winding connector male and cylindrical in shape, is fixed to the upper cover of the drive disc assembly, with an outer diameter of approximately... The inner diameter of the female drive winding wheel connector is smaller than that of the male drive winding wheel connector. A drive winding positioning post that can rotate around its own axis is coaxially mounted on the bottom of the inner cylinder of the male drive winding wheel connector through a drive wire connector bearing. The upper part of the drive wire force transmission post is cylindrical and its axis is parallel to the axis of the drive wire winding positioning post. Its lower part is cuboid. A drive wire winding connector connecting rod fixes the drive wire force transmission post and the drive wire winding positioning post together. The lower cuboid of the drive wire force transmission post is inserted into the opening of the drive wire winding wave spring located on the drive wire winding wave spring. After preloading, both the wire feed wheel spring and the drive wire winding spring tend to expand outward from the center within their respective mounting holes. Therefore, when relative rotation is required between the structure containing their mounting holes and the insertion structure at the spring opening, it is necessary to overcome the circumferential friction between the spring and the inner wall of its mounting hole. This provides a crucial protection against manipulation errors during manual branch sawing and repositioning, and is a key aspect of improving the practicality of this invention.

[0008] The working principle of the above scheme is as follows: The operator first attaches the saw wheel assembly to the middle of the handle with the saw wire outlet facing upwards towards the saw bow. With the wire feed wheel assembly already reset (sufficient wire feed drive line wound on the drive wheel), the telescopic rod is extended section by section until the saw bow reaches the required height. The saw bow groove is then aligned and placed on the branch to be cut. It is worth noting that during the extension of the telescopic rod, the wire feed wheel spring cannot rotate relative to the wire feed wheel assembly shaft due to the obstruction of the locking block. Meanwhile, the drive wheel and the coaxially fixed wire feed load wheel tend to rotate under the drive of the wire feed drive line. Therefore, static friction will be generated between the wire feed wheel spring and the wire feed wheel assembly, hindering the rotation of the wire feed wheel assembly. The wire feed drive line will then be drawn from the drive wheel assembly... The wire is pulled out of the drive winding wheel rather than from the wire feeding drive wheel. Simultaneously, the wire, spanning the pulley grooves of the fixed and movable saw wheels, is slightly bent by the tree branch. The wire end hanger is then raised to a higher position along with the saw bow. The male connector of the handheld drive assembly is aligned with the female connector of the drive winding wheel assembly, ensuring the drive winding positioning post is precisely inserted into the drive winding wheel connector positioning hole and the drive wire transmission post is offset from the drive winding wheel transmission lever. After the dual-output shaft reduction motor of the handheld drive assembly is turned forward, the motor's extended shaft drives the male connector of the drive winding wheel to rotate forward. The drive winding spring inside rotates under friction, thereby causing the drive wire transmission post to rotate around the drive winding positioning post. The drive rod of the transmission column actuates the drive winding wheel, causing the drive winding wheel to rotate. This rotation drives the wire feeding wheel assembly inside the saw bow to rotate forward via the wire feeding drive line. The wire feeding load wheel, coaxially connected to the drive wheel, also rotates forward. Since the tension of the saw wire on the movable saw wheel is less than the spring force of the angle torsion spring, the rubber rim of the load wheel can now push the saw wire out of the saw bow. Therefore, the saw wire end hanger will continue to fall until it is within reach of the operator. Then, the operator removes the handheld drive assembly and holds it in their hand. Simultaneously, the operator attaches the saw wire end hanger to the extended end of the saw wire pull rod B of the handheld drive assembly. After adjusting the saw wire length using the saw wire winding handle, the saw wire will be pulled from the saw... The saw wire pulled out from the wire reel assembly is wound in multiple loops around the extended end of the saw wire pull rod A. At this time, the hand-held drive assembly's hand ring can be pulled down to tighten the saw wire segment located between the hand-held drive assembly and the branch to be sawed. At this time, the saw wire spanning the pulley grooves of the fixed saw wire wheel and the movable saw wire wheel will be significantly bent by the branch. Under the tension of the saw wire, the movable saw wire wheel installed in the saw bow slides to the position furthest from the wire feed wheel assembly's shaft, thereby enlarging the saw wire feed hole to its maximum, allowing the saw wire to slide completely freely in the saw wire feed hole. When the motor of the hand-held drive assembly is turned on, the saw wire pull rod A and the saw wire pull rod B of the hand-held drive assembly perform reciprocating linear motions in opposite phases, thereby driving the saw wire to reciprocate along the branch to produce a sawing action and cut the branch.After sawing off the branch, turn off the motor of the handheld drive assembly. The movable saw wheel will reset. Remove the wound saw wire from the extended end of the saw wire pull rod. Use the male connector of the drive wire pulley of the handheld drive assembly to drive the drive winding wheel to rotate clockwise. This will output all the excess drive wire from the drive wheel of the wire feed wheel assembly inside the saw bow back to the drive winding wheel. Of course, the saw wire will also be pulled out further from the saw wire winding wheel at the same time. It is worth noting that due to the presence of the drive wire winding spring, even if the operator does not turn off the drive motor after all the drive wire has been completely pulled out of the drive wheel, it will only lead to... The drive wire winding spring rotates relative to the drive wire winding connector male without breaking the wire feed drive wire. Then, starting from the first section near the handgrip, the telescopic rod is retracted section by section while the drive wire wheel connector positioning male of the hand-held drive assembly drives the drive winding wheel to rotate in the forward direction. Since the wire feed drive wire in the drive wheel has been completely pulled out at this point, neither the drive wheel nor its coupled drive winding wheel will rotate. Therefore, the drive wire winding spring installed inside the drive wire winding connector male will slip relative to the connector, thus preventing the wire feed drive wire from breaking during the complete retraction of the telescopic rod. During the process, the wire feeding drive line inside the rod remains taut and will not become tangled due to loosening. It is crucial to note that, as observed from the extension and retraction of the telescopic rod and the wire feeding operation, the frictional torque of the wire feeding wheel spring relative to its mounting hole should be less than the frictional torque of the drive line winding spring relative to its mounting hole. Otherwise, the motor of the hand-held drive assembly may idle during wire feeding, failing to complete the feeding process. Then, rotating the wire winding handle allows the wire to rewind back into the wire winding wheel. Although the wire feeding load wheel tends to rotate in the opposite direction, the frictional torque generated by the wire feeding wheel spring prevents it from reversing smoothly, thus ensuring the wire feeding drive... The wire is rewound to the wire feed drive wheel. Therefore, after the saw wire is fully reset, the wire feed wheel reset head of the handheld drive assembly is inserted into the wire feed wheel reset hole. The motor is then turned on to drive the wire feed drive wheel in reverse, thus rewinding enough wire back onto the wire feed drive wheel to complete the reset of the wire feed wheel assembly. Clearly, during this process, the saw wire tends to be fed further back into the saw wire winding box, but because the saw wire end loop is too thick to pass through the wire feed hole at this point, the saw wire will not be fed back. At this point, the entire retractable electric high-branch wire saw has been reset and is ready for pruning the next high branch or harvesting high-altitude fruit.

[0009] The beneficial effects of this invention are as follows: Existing hand-held high-branch saws do not utilize high-strength materials such as aluminum alloys for their telescopic rods. This is because telescopic rods made of such materials, with telescopic lengths exceeding 6 meters, combined with the sawing components at the top, are almost impossible to use manually and can only be mounted on engineering vehicles. Using engineering vehicles for high-branch pruning or high-altitude fruit harvesting presents the problem of requiring a large work area, making it unsuitable for densely planted orchards or densely forested areas with poor access. Therefore, existing hand-held high-branch saws for these agricultural tasks generally use telescopic carbon fiber rods (e.g., telescopic rods manufactured using the same technology as ordinary fishing rods) as the extension component. Existing motorized high-branch saws generally use the chain structure or double-blade structure of chainsaws, which are too bulky to be used with telescopic carbon fiber rods. This results in these two types of motorized sawing components failing to achieve true motorized high-branch sawing. This invention uses a wire saw as the force-applying structure for sawing, which, compared to the chain structure or double-blade structure of chainsaws… The blade structure is more compact, and the sawing component can be connected to a telescopic carbon fiber rod, allowing the paver to extend to a sufficiently high position to complete the work. Currently, most pavers on the market that can use telescopic carbon fiber rods have ordinary hand saw blades installed at the top of the rod without motor drive capability. Therefore, when sawing branches at high positions, the operator can only apply sawing force manually. Since the force application path of such pavers and the force transmission path of the paver body during lifting and feeding are both based on the telescopic carbon fiber rod itself, these pavers cannot apply sufficient sawing force to branches at high positions, otherwise the telescopic carbon fiber rod will break. The sawing force application path of this invention is decoupled from the force transmission path of the paver body during lifting and feeding, so that sufficient sawing force can be applied without causing the weak part at the top of the telescopic rod to break, thus making this paver truly practical. After completing a sawing of a branch or fruit stalk, this invention can be quickly reset on-site for the next sawing, and the sawing and main operation processes are all driven by a motor, saving time and effort, and has broad practical application prospects. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall composition of the present invention.

[0011] Figure 2 This is a partial cross-sectional view of the internal structure of the saw bow.

[0012] Figure 3 Is Figure 2 View the saw bow along the direction of arrow A in the view.

[0013] Figure 4 Is Figure 3 The cross-sectional view of the saw bow along the middle section arrow BB.

[0014] Figure 5 Is Figure 3The cross-sectional view of the saw bow along the center section arrow CC.

[0015] Figure 6 This is a schematic diagram of the wire feeding and winding system in various components of the telescopic pole and the saw bow.

[0016] Figure 7 This is a schematic diagram of the saw wire winding inside the saw bow.

[0017] Figure 8 This is a schematic diagram of the assembly structure of the wire feeding wheel assembly and the movable wire saw wheel.

[0018] Figure 9 exist Figure 8 The assembly structure diagram of the wire feed wheel assembly and the movable wire saw wheel is shown in the direction of arrow D in the view.

[0019] Figure 10 This is a structural diagram of the wire feed wheel spring.

[0020] Figure 11 This is a schematic diagram of the drive pulley assembly installed on the telescopic pole.

[0021] Figure 12 yes Figure 11 Detailed view of point E in the middle.

[0022] Figure 13 This is a schematic diagram of the saw wheel assembly.

[0023] Figure 14 This is a schematic diagram of the saw wheel assembly viewed from another direction.

[0024] Figure 15 This is a schematic diagram of the handheld drive assembly with a partial cross-section.

[0025] Figure 16 A schematic diagram of the handheld drive component is viewed from another direction.

[0026] Figure 17 yes Figure 16 Detailed view of point F in the middle.

[0027] Figure 18 This is a structural diagram of a drive wire wound spring.

[0028] Figure 19 From different Figure 15 and Figure 16 View a partial cross-sectional view of the handheld drive assembly from the following direction.

[0029] Figure 20 This is an assembly diagram of the handheld drive assembly. In the diagram, the upper cover of drive disk assembly A and the upper cover of drive disk assembly B are respectively joined to the outer shell of drive disk assembly A and the outer shell of drive disk assembly B in the direction of the arrows in the diagram, thereby completing the assembly.

[0030] Figure 21 This diagram illustrates the operation of lowering the saw end ring into a reachable range using a handheld drive component after the saw bow has been hung on the tree branch to be sawed.

[0031] Figure 22 yes Figure 21 Detailed diagram of point G in the middle.

[0032] Figure 23 This is a diagram illustrating the operation of tightening the saw wire and sawing tree branches using a handheld drive assembly.

[0033] Figure 24 This is a schematic diagram illustrating the operation of resetting the wire feed wheel assembly using a handheld drive component after a branch has been cut.

[0034] Figure 25 yes Figure 24 Detailed view of section H in the middle.

[0035] The diagram is labeled as follows: 0-Tree branch, 1-Bow saw, 101-Bow saw body, 1011-Drive wire groove, 1012-Wire saw groove, 1013-Telescopic rod insertion hole, 1014-Wire feed wheel assembly mounting hole, 1015-Wire feed wheel spring retaining block, 1016-Fixed wire saw wheel mounting hole, 1017-Modible wire saw wheel mounting slide, 102-Fixed wire saw wheel, 103-Modible wire saw wheel, 1031-Modible wire saw wheel slide, 1032-Modible wire saw wheel axle, 1033-Modible wire saw pulley groove, 1033-42-Wire feed hole, 104-Wire feed wheel assembly, 1041-Wire feed drive wheel, 1042-Wire feed load wheel, 1043-Wire feed wheel spring, 10431-Wire feed wheel spring opening, 1044-Wire feed wheel assembly Shaft, 1045 - Wire feed wheel set reset square hole, 105 - Angle torsion spring, 1051 - Angle torsion spring arm, 2 - Telescopic rod, 201 - Hand grip rod, 202 - First section rod, 3 - Drive spool assembly, 301 - Wire feed drive line, 302 - Drive winding wheel, 303 - Drive winding wheel shaft, 3031 - Drive winding wheel insertion positioning hole, 3032 - Drive winding wheel transmission lever, 304 - Drive winding wheel housing, 305 - Drive winding wheel insertion positioning female head, 4 - Saw wheel assembly, 401 - Saw wire, 4011 - Saw wire end hanging ring, 402 - Saw wire winding box, 403 - Saw wire winding wheel, 404 - Saw wire outlet, 405 - Saw wire winding handle, 406 - Saw wire box hanging hole, 407 - Saw wire box hook, 5 - Handheld drive assembly, 501-Handheld ring, 502-Handheld drive assembly housing, 503-Drive disk assembly A, 5031-Drive disk assembly A housing, 5032-Drive disk assembly A top cover, 5033-Wire saw box strap, 5034-Drive reel connector positioning male, 5035-Drive disk assembly A input gear, 5036-Drive disk assembly A intermediate gear, 5037-Drive disk assembly A output gear, 50371-Drive disk assembly A transmission pin, 5038-Pulley A sliding sleeve, 504-Drive disk assembly B, 5041-Drive disk assembly B housing, 5042-Drive disk assembly B top cover, 5045-Drive disk assembly B input gear, 5046-Drive disk assembly B intermediate gear, 5047-Drive disk assembly B output gear, 5047 1-Drive pin of drive disc assembly B, 5048-Sleeve of pull rod B, 505-Battery, 506-Drive motor, 5061-Drive motor extension shaft, 50611-Drive wire winding connector male, 50612-Drive wire winding spring, 506121-Drive wire winding spring opening, 50613-Drive wire winding connector connecting rod, 506131-Drive wire force transmission column, 506132-Drive wire winding positioning column, 50614-Drive wire connector bearing, 50615-Reset square head of wire feed wheel assembly, 507-Reinforcing rib, 508-Saw wire pull rod A, 5081-Wire clamping end of pull rod A, 5082-Pin groove of pull rod A, 509-Saw wire pull rod B, 5091-Hanging ring of pull rod B, 5092-Pin groove of pull rod B. Detailed Implementation

[0036] The invention will now be further described with reference to the accompanying drawings.

[0037] This embodiment provides a retractable electric high-branch wire saw, such as... Figure 1 — Figure 6 , Figure 11 — Figure 13As shown, it includes a saw bow 1, a telescopic rod 2, a drive reel assembly 3, a saw reel assembly 4, and a handheld drive assembly 5. The telescopic rod 2 has the same structure as a regular fishing rod, consisting of multiple sections that are thicker at the top and thinner at the bottom. It can retract all sections to the thickest section at the bottom, or extend all sections sequentially to reach its maximum length. The saw bow 1 is installed at the top of the thinnest section of the telescopic rod 2 through the telescopic rod insertion hole 1013. The drive reel assembly 3 is fixed to the middle of the thickest section of the telescopic rod 2, i.e., the handhold rod 201. The saw reel assembly 4 is hooked to the middle of the handhold rod 201 through the saw box hanging hole 406 and can be accessed from the handhold rod 201. The handheld drive assembly 5 is a separate component and is used by hand. The saw wire 401 used to cut branches is wound in an orderly manner in the pulley groove of the saw wire winding wheel 403 of the saw wire wheel assembly 4 and pulled out from the saw wire outlet 404 located at the front end of the saw wire winding box 402. After entering the saw wire groove 1012 located inside the saw bow body 101, it is hung in the pulley grooves of the fixed saw wire wheel 102 and the movable saw wire wheel 103 installed inside the saw bow body 101 in sequence. The saw wire end hanging ring 4011 at the end of the saw wire 401 passes through the pulley groove of the movable saw wire wheel 103 and is suspended outside the saw bow 1. The drive wire wheel assembly 3 consists of the drive winding wheel housing 304 and The system comprises a drive winding wheel 302, which is mounted on a drive winding wheel housing 304 via a drive winding wheel shaft 303 and can rotate around the drive winding wheel shaft 303. The drive winding wheel shaft 303 is arranged perpendicular to the axis of the telescopic rod 2. One end of the drive winding wheel shaft 303 extends out of the drive winding wheel housing 304 and is fixedly connected to a drive winding wheel transmission lever 3032. The drive winding wheel transmission lever 3032 is close to the outer surface of the drive winding wheel housing 304 and is perpendicular to the axis of the drive winding wheel shaft 303. A drive winding wheel insertion and positioning hole 30 is provided at the connection point between the drive winding wheel transmission lever 3032 and the drive winding wheel shaft 303. 31. The positioning hole is coaxial with the drive winding wheel shaft 303. A ring-shaped drive winding wheel insertion positioning head 305 is also fixed to the drive winding wheel housing 304. Its inner diameter can be slightly larger than the rotation range of the drive winding wheel transmission lever 3032 and is coaxial with the drive winding wheel shaft 303. The wire feeding drive line 301 is orderly wound in the pulley groove of the drive winding wheel 302 and pulled out from it, passes through the interior of the hollow telescopic rod 2 and enters the drive wire groove 1011 inside the saw bow 1 from the top of the thinnest section of the telescopic rod 2, and is orderly wound in the pulley groove of the wire feeding drive wheel 1041 of the wire feeding wheel assembly 104 located inside the saw bow body 101. Figure 8 ).

[0038] like Figure 2 — Figure 5 , Figure 7 — Figure 10 , Figure 13 , Figure 14 , Figure 16 , Figure 23As shown, the saw wire winding handle 405 and the saw wire winding wheel 403 are coaxially mounted on one side end face of the saw wire winding box 402, and the saw wire winding wheel 403 can be manually driven to rotate around the axis to realize the winding and unwinding of the saw wire 401. The saw wire box hook 407 is fixed to the other side end face of the saw wire winding box 402 and can be hung in the saw wire box hook strap 5033 on the drive disc assembly 5032 of the handheld drive assembly 5; the saw wire 401 wound on the saw wire winding wheel 403 is pulled out of the saw wire winding box 402 from the saw wire outlet 404. 2. The saw then enters the saw body 101. Inside the saw body 101, the saw is sequentially hung in the pulley groove of the fixed saw wheel 102 and the pulley groove (also known as the movable saw wheel pulley groove 1033) of the movable saw wheel 103. The two ends of the shaft of the fixed saw wheel 102 are respectively installed in two fixed saw wheel mounting holes 1016 inside the saw body 101 and are fixed in position relative to the saw body 101. The two ends of the shaft (also known as the movable saw wheel shaft 1032) of the movable saw wheel 103 each have a waist-shaped movable saw wheel slide 1031. Two waist-shaped movable saw wheel slides 1031 are aligned along their length and are respectively installed in two movable saw wheel mounting grooves 1017 located inside the saw bow body 101. The width of the two movable saw wheel mounting grooves 1017 is the same as the width of the movable saw wheel slides 1031, but their length is longer, which ensures that the movable saw wheel 103 can move in translation along the length of the movable saw wheel mounting grooves 1017. The axis of rotation of the fixed saw wheel 102 is parallel to the axis of the movable saw wheel shaft 1032, and the two form a [missing information - likely a structure or feature]. The plane of the saw and the length direction of the two waist-shaped movable saw wheel slides 1031 form an acute angle of no more than 45°; the wire feeding wheel set 104 is composed of a wire feeding drive wheel 1041 and a wire feeding load wheel 1042 coaxially fixed together, and its shaft is the wire feeding wheel set shaft 1044. The two ends of the wire feeding wheel set shaft 1044 are respectively installed in the two wire feeding wheel set mounting holes 1014 in the saw bow body 101, and the end with the wire feeding wheel set reset square hole 1045 can extend to the outside of the saw bow body 101.The axis of the wire feeding wheel assembly shaft 1044 is parallel to the axis of the movable saw wheel shaft 1032. The rubber rim of the wire feeding load wheel 1042 protrudes outward and just inserts into the movable saw pulley groove 1033, thus forming a wire feeding hole 103342. When the movable saw wheel 103 slides along the length of the movable saw pulley groove 1033 to be closest to the wire feeding wheel assembly shaft 1044, the wire feeding hole 103342 is reduced to its minimum size so that the saw wire 401 can be pre-pressed by the rubber rim of the wire feeding load wheel 1042, thereby generating a bidirectional wire feeding action. The saw wire end hanging ring 4011, being thicker than the saw wire 401 itself, cannot pass through the wire feeding hole 103342 at this time. When the movable saw wheel 103 slides along the length of the movable saw pulley groove 1033 to the furthest point from the wire feed wheel assembly shaft 1044, the wire feed hole 103342 expands to its maximum size, allowing the saw wire 401 to slide freely within it. The wire feed load wheel 1042 has a hole coaxial with the wire feed wheel assembly shaft 1044 on one end face near the wire feed wheel assembly reset square hole 1045. A wire feed wheel spring 1043 is pre-compressed radially towards the center and installed in this hole. Since the wire feed wheel spring 1043 tends to expand outwards from the center, when the wire feed wheel assembly 104 rotates or tends to rotate relative to the wire feed wheel spring 1043, the wire feed wheel spring 1043 and the hole... Frictional force will be generated between the inner walls along the circumference of the spring. The wire feed wheel spring 1043 has a spring opening 10431. After the wire feed wheel assembly 104 is installed on the saw bow 1, the wire feed wheel spring locking block 1015, fixed to the saw bow body 101, precisely inserts into the spring opening 10431. This prevents the wire feed wheel spring 1043 from rotating relative to the saw bow body 101 around its own central axis, i.e., the axis of the wire feed wheel assembly shaft 1044. Therefore, any rotation of the wire feed wheel assembly 104 around the wire feed wheel assembly shaft 1044 must overcome the frictional torque generated between the wire feed wheel spring 1043 and the wire feed load wheel 1042. The winding direction of the wire feed drive line 301 in the pulley groove of the wire feed drive wheel 1041... This arrangement allows the rubber rim of the wire feeding load wheel 1042 to drive or tend to drive the saw wire 401 out of the saw wire winding wheel 403 when the wire feeding drive wire 301 is pulled out from the wire feeding drive wheel 1041. This causes the saw wire end hanging ring 4011, suspended outside the saw bow 1, to descend and move away from the saw bow 1 under gravity. The torsion spring arms 1051 of the angle torsion spring 105 are respectively connected to the movable saw wire wheel shaft 1032 and the wire feeding wheel assembly shaft 1044. The preload of the angle torsion spring 105 ensures that the saw wire feeding hole 103342 is always kept in its minimum position, unless the movable saw wire wheel 103 slides away from the wire feeding wheel assembly shaft 1044 along the length direction of the movable saw wire pulley groove 1033 under external force.

[0039] like Figure 15— Figure 20 、 Figure 23As shown, the handheld drive assembly 5 consists of a handheld ring 501, a handheld drive assembly housing 502, a drive disc assembly A 503, a drive disc assembly B 504, a saw wire pull rod A 508, and a saw wire pull rod B 509. The handheld ring 501 is elliptical and fixed to one end of the handheld drive assembly housing 502 along its length. Inside the handheld drive assembly housing 502, from one end where the handheld ring 501 is located to the other end, a battery 505 and a drive motor 506 are installed sequentially. The drive motor 506 is a double-output shaft worm gear reducer motor, and its output shaft, i.e., the two ends of the drive motor extension shaft 5061, extend from opposite sides of the handheld drive assembly housing 502. Drive disc assembly A 503 and drive disc assembly B 504... The two ends of the drive motor extension shaft 5061 are respectively fixed to the two sides of the handheld drive assembly housing 502. The two ends of the drive motor extension shaft 5061 are coaxially fixed to the drive disk group A input gear 5035 inside the drive disk group A 503 and the drive disk group B input gear 5045 inside the drive disk group B 504. Both drive disk group A 503 and drive disk group B 504 are disc-shaped, with their disk surfaces coinciding and perpendicular to the drive motor extension shaft 5061. A reinforcing rib 507 is fixed to the handheld drive assembly housing 502, drive disk group A 503, and drive disk group B 504. Inside drive disk group A 503, the drive disk group A input gear 5035 meshes with a drive disk group A intermediate gear 5036. 036 meshes with an output gear 5037 of a drive disc assembly. The shafts of both the intermediate gear 5036 and the output gear 5037 of the drive disc assembly are fixedly connected to the outer shell 5031 of the drive disc assembly. A drive disc assembly transmission pin 50371 is located on the end face of the output gear 5037. The drive disc assembly transmission pin 50371 is inserted into the pin groove 5082 of the tie rod, which is part of the saw wire tie rod 508. The main body of the saw wire tie rod 508 is cylindrical and is installed in two tie rod sliding sleeves 5038 coaxially fixed to the inner side of the upper cover 5032 of the drive disc assembly, allowing the saw wire tie rod 508 to slide along its own axis. The length direction of the tie rod pin groove 5082 is perpendicular to the axis of rotation. The axis of the saw wire pull rod A 508 is perpendicular. The width of the pull rod A pin groove 5082 is the same as the outer diameter of the drive disc assembly A transmission pin 50371, so that the drive disc assembly A transmission pin 50371 can slide along the length of the pull rod A pin groove 5082. When the drive disc assembly A output gear 5037 rotates, the drive disc assembly A transmission pin 50371 can drive the saw wire pull rod A 508 to reciprocate and extend relative to the drive disc assembly A housing 5031 along its own axis. When the saw wire pull rod A 508 is retracted to its shortest length relative to the drive disc assembly A 503, one end of the saw wire pull rod A 508 can still extend out of the drive disc assembly A housing 5031. This end is also fixed with a pull rod A wire clamping end 5081, which can be used to wind and clamp the saw wire 401 by friction.Within drive disk assembly B 504, the input gear 5045 of drive disk assembly B meshes with an intermediate gear 5046 of drive disk assembly B, and the intermediate gear 5046 meshes with an output gear 5047 of drive disk assembly B. The shafts of both the intermediate gear 5046 and the output gear 5047 of drive disk assembly B are fixedly connected to the outer casing 5041 of drive disk assembly B. A drive pin 50471 of drive disk assembly B is located on the end face of the output gear 5047 of drive disk assembly B. The drive pin 50471 of group B is inserted into the pin groove 5092 of pull rod B. The pin groove 5092 of pull rod B is part of the saw wire pull rod B 509. The main body of the saw wire pull rod B 509 is cylindrical and is installed in two pull rod B sliding sleeves 5048 that are coaxially fixed to the inside of the upper cover 5042 of drive disc group B, so that the saw wire pull rod B 509 can slide along its own axis. The length direction of the pin groove 5092 of pull rod B is perpendicular to the axis direction of the saw wire pull rod B 509. The width of the drive pin 50471 of the drive disc assembly B is consistent with the outer diameter of the drive pin 50471, allowing the drive pin 50471 of the drive disc assembly B to slide along the length direction of the pin groove 5092 of the tie rod B. When the output gear 5047 of the drive disc assembly B rotates, the drive pin 50471 of the drive disc assembly B can drive the saw wire tie rod B 509 to reciprocate and extend relative to the outer shell 5041 of the drive disc assembly B along its own axis. When the saw wire tie rod B 509 retracts to its shortest length relative to the drive disc assembly B 504, the saw wire tie rod B 509... One end can still extend out of the drive disc assembly B housing 5041, and this end is also fixedly connected to a pull rod B hanging ring 5091, which can hang the saw wire end hanging ring 4011 in the pull rod B hanging ring 5091; the axes of the saw wire pull rod A 508 and the saw wire pull rod B 509 are parallel, and the drive pin 50371 of the drive disc assembly A and the drive pin 50471 of the drive disc assembly B are arranged with a 180-degree phase difference, so that when the saw wire pull rod A 508 is retracted to its shortest length, the saw wire pull rod B 509 is just extended to its longest length;Besides being coaxially and fixedly connected to the input gears 5035 and 5045 of drive disk group A and drive disk group B respectively, the two ends of the drive motor extension shaft 5061 have the following features: one end passes through the input gear 5045 of drive disk group B and extends further beyond the upper cover 5042 of drive disk group B, where it is coaxially and fixedly connected to a wire feeding wheel reset square head 50615; the other end passes through the input gear 5035 of drive disk group A and further passes through the upper cover 5032 of drive disk group A, where it is coaxially and fixedly connected to a drive wire winding connector male head 50611 with a sealed bottom cylindrical shape; and a drive wire winding wave spring 50612 is pre-compressed radially towards the center and installed on the drive wire winding connector male head. Inside the hole of 50611, a cylindrical drive wire reel connector positioning male 5034 is fixed to the upper cover 5032 of the drive disc assembly. Its inner diameter is slightly larger than the outer diameter of the drive wire winding connector male 50611 and is exactly coaxial with the drive wire winding connector male 50611. Its outer diameter is slightly smaller than the inner diameter of the drive wire winding reel connector positioning female 305. Inside the bottom of the drive wire winding connector male 50611, a drive wire winding positioning post 506132 is coaxially mounted through a drive wire connector bearing 50614. The upper part of the drive wire transmission post 506131 is cylindrical and its axis is parallel to that of the drive wire winding positioning post 5061. The 32 axes are parallel, and its lower part is a cuboid. A drive wire winding connector rod 50613 connects the drive wire transmission column 506131 and the drive wire winding positioning column 506132. The cylindrical part of the drive wire transmission column 506131 faces outward and is close to the inner cylindrical wall of the drive wire winding connector male 50611. The lower cuboid is inserted into the drive wire winding spring opening 506121 located on the drive wire winding spring 50612. When the drive wire winding positioning column 506132 rotates around its own axis, the drive wire transmission column 506131 will be driven by the drive wire winding connector rod 50613 to rotate around the drive wire winding positioning column 506132. The axis of 06132 revolves. Since the drive wire winding spring 50612 tends to expand outwards from the center, when the drive wire transmission column 506131 revolves or has a tendency to revolve, a frictional force along the circumferential direction will be generated between the drive wire winding spring 50612 and the inner wall of the drive wire winding connector 50611. Therefore, unless the drive motor extends out of the shaft 5061 and rotates synchronously, any revolving motion of the drive wire transmission column 506131 around the axis of the drive wire winding positioning column 506132 must overcome the frictional torque generated between the drive wire winding spring 50612 and the inner wall of the drive wire winding connector 50611.

[0040] The working principle of the above embodiments is as follows: Figure 21 — Figure 25As shown, the operator first attaches the saw box hanging hole of the saw wheel assembly to the middle of the handle, with the saw wire outlet pointing upwards towards the saw bow. After the wire feed wheel assembly has been reset (with sufficient wire feed drive line wound on the drive wheel), the telescopic rod is extended section by section until the saw bow reaches the required height. The saw bow groove is then aligned and placed on the branch to be sawed. It is important to note that during the extension of the telescopic rod, the wire feed wheel spring cannot rotate relative to the wire feed wheel assembly shaft due to the obstruction of the spring stop block. Meanwhile, the drive wheel and the coaxially fixed load wheel tend to rotate under the influence of the wire feed drive line. Therefore, a static force will be generated between the wire feed wheel spring and the wire feed wheel assembly, hindering the rotation of the wire feed wheel assembly. Friction causes the wire feed drive line to be pulled out from the drive winding wheel of the drive wire wheel assembly, rather than from the wire feed drive wheel itself. Simultaneously, the saw wire, spanning the pulley grooves of the fixed and movable saw wheels, is slightly bent by the tree branch, and the saw wire end hanger is raised higher along with the saw bow. Align the male connector of the drive wire wheel of the handheld drive assembly with the female connector of the drive winding wheel of the drive wire wheel assembly and insert it, ensuring the drive wire winding positioning post is precisely inserted into the drive winding wheel's positioning hole and the drive wire transmission post is offset from the drive winding wheel's transmission lever. After turning on the drive motor of the handheld drive assembly, the extended shaft of the drive motor drives the male connector of the drive wire winding assembly to rotate clockwise, activating the drive wire winding spring within its inner hole. Driven by friction, the rotation of the drive wire transmission column causes the drive wire winding positioning column to rotate. The drive wire transmission column then actuates the drive winding wheel transmission lever, causing the drive winding wheel to rotate. The rotation of the drive winding wheel drives the wire feeding drive wheel located inside the saw frame to rotate forward via the wire feeding drive wire. The wire feeding load wheel, which is coaxially fixed to the wire feeding drive wheel, will also rotate forward. Since the tension of the saw wire on the movable saw wheel is less than the elastic force of the angle torsion spring, the rubber rim of the wire feeding load wheel can now push the saw wire out of the saw frame. Therefore, the saw wire end hanging ring will continue to fall until it is within reach of the operator. Then, the operator removes the handheld drive assembly and holds it in their hand, while the other... The saw wire end hanger is attached to the pull rod B hanger of the hand-held drive assembly. After adjusting the saw wire length using the saw wire winding handle, the saw wire portion pulled from the saw wire outlet is wound multiple times around the wire clamping end of the pull rod A. At this time, the hand-held ring of the hand-held drive assembly can be pulled down to tighten the saw wire segment located between the hand-held drive assembly and the branch to be sawed. At this time, the saw wire spanning the fixed saw wire wheel and the movable saw wire wheel pulley groove will be significantly bent by the branch. Under the tension of the saw wire, the movable saw wire wheel installed in the saw bow slides along the length direction of the movable saw wire pulley groove to the position furthest from the wire feeding wheel group shaft, thereby enlarging the saw wire feeding hole to the maximum, and the saw wire can slide completely freely in the saw wire feeding hole.Turn on the drive motor of the handheld drive assembly. The saw wire pull rods A and B of the handheld drive assembly, driven by two linkage sliding push rod mechanisms composed of a sliding sleeve of pull rod A (B), a pin groove of pull rod A (B), and a transmission pin of drive disc group A (B), respectively, perform reciprocating linear movements in opposite phases. This causes the saw wire to reciprocate and cut the branch. After cutting the branch, turn off the drive motor of the handheld drive assembly. The movable saw wire wheel resets, and the wound saw wire is removed from the wire clamping end of pull rod A. The drive wire wheel of the handheld drive assembly is connected to the positioning male head to drive the drive winding wheel to rotate forward, thereby removing excess wire from the wire feeding drive wheel of the wire feeding wheel group inside the saw bow. All the wire is output back to the drive winding wheel. Simultaneously, the saw wire is further pulled out of the winding wheel. It's important to note that due to the drive wire winding spring, even if the operator doesn't turn off the drive motor after all the drive wire has been completely pulled out of the drive wheel, the drive wire winding spring will only rotate relative to the drive wire winding connector, without breaking the drive wire. Afterward, starting from the first section near the handgrip, retract the telescopic rod section by section while using the drive wire wheel connector of the handheld drive assembly to drive the drive winding wheel to rotate forward. Since all the drive wire in the drive wheel has been pulled out at this point, the drive wheel and its coupling... The drive winding wheels will no longer rotate, so the drive winding spring installed inside the male drive winding connector will slip relative to the male drive winding connector. This ensures that the drive wire inside the telescopic rod remains taut and does not become tangled during the full retraction of the telescopic rod. It is important to note that, as seen from the extension, retraction, and wire feeding operations of the telescopic rod, the frictional torque of the wire feeding wheel spring relative to its mounting hole should be less than the frictional torque of the drive winding spring relative to its mounting hole. Otherwise, the drive motor of the hand-held drive assembly may idle during wire feeding and fail to complete the feeding process. Then, rotating the wire winding handle allows the wire to rewind back into the wire winding wheel. At this point, although the wire feeding load wheel rotates in the opposite direction... The saw wire tends to be fed back, but due to the frictional torque generated by the wire feed wheel spring, it cannot be reversed smoothly to allow the wire feed drive line to rewind back onto the wire feed drive wheel. Therefore, after the saw wire is fully reset, the wire feed wheel reset square head of the handheld drive assembly is inserted into the wire feed wheel reset square hole, and the drive motor is turned on to drive the wire feed drive wheel to reverse, thereby rewinding enough wire feed drive line back onto the wire feed drive wheel to complete the reset of the wire feed wheel assembly. Obviously, during this process, the saw wire tends to be fed further back into the saw wire winding box, but because the saw wire end hanging ring is too thick, it cannot pass through the saw wire feed hole at this time, and the saw wire will not be fed back. At this point, the entire retractable electric high-branch wire saw has been reset and can proceed to the next high-level branch pruning or high-level fruit harvesting.

Claims

1. A telescoping electric pole saw characterized by: It includes a saw bow (1), an extension rod (2), a driving line wheel assembly (3), a saw line wheel assembly (4) and a handheld driving assembly (5); the extension rod (2) is composed of multiple sections with thin upper part and thick lower part and can be manually extended and contracted; the saw bow (1) is installed at the top end of the thinnest section of the extension rod (2) and is internally provided with a fixed saw line wheel (102), a movable saw line wheel (103) and a line feeding wheel set (104); the saw line wheel assembly (4) is hung on the hand holding rod (201) and can be removed, and is internally provided with a saw line winding wheel (403); the handheld driving assembly (5) is a separate matching assembly and is used in a handheld manner; the saw line (401) used for sawing branches is orderly wound on the saw line winding wheel (403) and is hung on the fixed saw line wheel (102) and the movable saw line wheel (103) in sequence, and the saw line end hanging ring (4011) at the end of the saw line (401) penetrates out and hangs outside the saw bow (1); the driving line wheel assembly (3) is mainly composed of a driving winding wheel shell (304) and a driving winding wheel (302) installed in the driving winding wheel shell (304), one end of the rotating shaft of the driving winding wheel (302) penetrates out of the driving winding wheel shell (304) and is fixedly connected with a driving winding wheel transmission lever (3032), and a coaxial driving winding wheel connector positioning hole (3031) is arranged on the end face of the end; a driving winding wheel connector positioning female head (305) in the form of a ring and coaxial with the driving winding wheel (302) is further fixedly connected to the driving winding wheel shell (304); the driving winding wheel transmission lever (3032), the driving winding wheel connector positioning hole (3031) and the driving winding wheel connector positioning female head (305) jointly form a driving winding clutch connector structure, which can be coupled with a driving winding clutch connector structure arranged on the handheld driving assembly (5) to realize power and motion transmission from the handheld driving assembly (5) to the driving winding wheel (302); the line feeding driving line (301) is pulled out from the driving winding wheel (302) where it is wound, penetrates through the inner cavity of the extension rod (2) and enters the inside of the saw bow (1), and is then wound on the line feeding driving wheel (1041) of the line feeding wheel set (104).

2. A telescoping electric pole saw according to claim 1, characterized in that: A handle is coaxially fixed to the saw line winding wheel (403) to manually release and wind the saw line (401); the rotation axis of the fixed saw line winding wheel (102) and the rotation axis of the movable saw line winding wheel (103) are parallel to each other, the rotation axis of the fixed saw line winding wheel (102) is fixedly installed relative to the saw bow body (101) and can only rotate around its own axis relative to the saw bow body (101), while the rotation axis of the movable saw line winding wheel (103) is installed on the saw bow body (101) through a movable slide, so that it can rotate around its own axis and also can reciprocatingly translate in a certain direction in the vertical plane of its own axis relative to the saw bow body (101), and the included angle between the translation direction and the plane formed by the rotation axis of the fixed saw line winding wheel (102) and the rotation axis of the movable saw line winding wheel (103) is an acute angle not greater than 45°; the line feeding wheel set (104) is coaxially fixedly connected by a line feeding driving wheel (1041) and a line feeding load wheel (1042), the rotation axis of the line feeding wheel set (104) is parallel to the rotation axis of the movable saw line winding wheel (103) and is fixedly installed relative to the saw bow body (101) and can only rotate around its own axis, one end of the rotation axis of the line feeding wheel set (104) extends to the outside of the saw bow body (101) and the end face is provided with a line feeding wheel set reset square hole (1045); the rubber rim part of the line feeding load wheel (1042) protrudes outward and is just inserted into the pulley groove of the movable saw line winding wheel (103), so as to form a saw line feeding hole (103342), when the movable saw line winding wheel (103) reciprocatingly translates in the vertical plane of its own axis, the size of the saw line feeding hole (103342) will change, when the movable saw line winding wheel (103) slides to the closest to the axis of the line feeding wheel set (104), the saw line feeding hole (103342) is shrunk to the minimum, so that the saw line (401) can be pre-pressed by the rubber rim part of the line feeding load wheel (1042), thereby a bidirectional line feeding action can be generated and the saw line end hanging ring (4011) cannot pass through the saw line feeding hole (103342) at this time, when the movable saw line winding wheel (103) slides to the farthest away from the axis of the line feeding wheel set (104), the saw line feeding hole (103342) is expanded to the maximum, so that the saw line (401) can completely freely slide in the saw line feeding hole (103342); the end face of the line feeding wheel set (104) close to one side of the shell of the saw bow body (101) is provided with a hole coaxial with the rotation axis of the line feeding wheel set (104), a line feeding wheel wave spring (1043) is installed in the hole after being pre-pressed along the radial direction to the center, the line feeding wheel wave spring (1043) has an opening, when the line feeding wheel set (104) is installed on the saw bow (1), a clamping block fixedly connected to the saw bow body (101) is just inserted into the opening, so that the line feeding wheel wave spring (1043) cannot rotate around the axis of the line feeding wheel set (104) relative to the saw bow body (101).A pre-pressed angular torsion spring (105) has its torsion spring arms connected to the rotating shafts of the movable saw wire wheel (103) and the wire feeding wheel set (104) respectively, and the pre-pressing direction of the angular torsion spring (105) should be such that the saw wire feeding hole (103342) always has a tendency to be reduced.

Images