Lifting control device for tree pruning

Abstract

The utility model relates to a landscape tree pruning auxiliary related technical field, concretely is a kind of lifting control device for tree pruning, for the vertical lifting of the sliding sleeve installed on vertical frame is controlled, including lifting drive arrangement;Lifting drive arrangement includes mounting seat, reel assembly of rotation installation on mounting seat and the cable of connecting reel assembly, the end of cable far from reel assembly is passed through the guide wheel fixed on vertical frame and is fixed with sliding sleeve, sliding sleeve is set on vertical frame, wherein: reel assembly includes: the reel of rotation installation on mounting seat, the end of cable is fixed on reel;Rotary drive unit for driving reel rotation;And for the one-way control member of controlling the one-way rotation of reel, when one-way control member is unlocked, reel can bidirectional rotation. The safety hazard that the one-way control member set ensures sliding sleeve and adjustable annular part under the action of gravity fall quickly brings.

Description

Technical Field

[0001] This utility model relates to the technical field of landscape tree pruning assistance, specifically a lifting control device for tree pruning. Background Technology

[0002] Landscape trees are trees used in gardens and parks to beautify the environment, create atmosphere, and enhance aesthetic value. They not only have ecological functions, such as providing shade, purifying the air, and regulating the climate, but also have important aesthetic and cultural value.

[0003] Landscape trees generally need to be pruned to maintain their desired shape or form. Currently, landscape tree pruning is usually done by human visual judgment, which can easily lead to deviations in the pruning shape. These deviations include: poor roundness of the pruning, and inconsistent pruning degree at different locations, which affect the overall shape of the landscape tree.

[0004] Therefore, adjustable ring-shaped components are set up to assist in pruning. However, since the height of the adjustable ring-shaped components needs to be adjusted according to the pruning position of the landscape tree, the current method directly uses a roller and rope to control the winding or unwinding. Although a ratchet assembly is set up to achieve one-way locking, when the ratchet assembly is released from the one-way locking state, the adjustable ring-shaped components are prone to fall rapidly under the action of gravity, which may cause safety hazards. Summary of the Invention

[0005] The purpose of this invention is to provide a lifting control device for tree pruning to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tree pruning lifting control device for controlling the vertical lifting of a sliding sleeve mounted on a vertical frame, including a lifting drive device;

[0008] The lifting drive device includes a mounting base, a take-up and release roller assembly rotatably mounted on the mounting base, and a cable connecting the take-up and release roller assembly. One end of the cable, away from the take-up and release roller assembly, passes over a guide wheel fixed to the vertical frame and is fixed to a sliding sleeve. The sliding sleeve is fitted onto the vertical frame, wherein:

[0009] The take-up and release roller assembly includes:

[0010] Rotate the roller mounted on the mounting base, with one end of the rope fixed to the roller;

[0011] A rotation drive unit for driving the rotation of the roller;

[0012] In addition, a one-way control member for controlling the one-way rotation of the roller, wherein when the one-way control member is unlocked, the roller can rotate in both directions.

[0013] As described above, the tree pruning lifting control device includes: The rotation drive unit comprises:

[0014] Rotate the drive gear mounted on the mounting base, and fix a rotation handle on the shaft of the drive gear;

[0015] It also includes a driven gear fixed coaxially with the roller, the driven gear meshing with the driving gear.

[0016] As described above, the tree trimming lifting control device includes: a one-way control component comprising:

[0017] A ratchet fixed coaxially with the drive gear and a sliding seat slidably connected to the mounting base, wherein the sliding seat has ratchet teeth that cooperate with the ratchet on the side facing the ratchet, and a friction element is formed on the side of the sliding seat away from the ratchet;

[0018] It also includes an elastic element connecting the slide and the mounting base, the elastic element providing a force toward the ratchet to the slide.

[0019] As described above, the tree trimming lifting control device includes: The elastic element includes:

[0020] A fixed base fixed on the mounting base and a connecting base fixedly connected to the sliding base, wherein at least one sliding rod is fixed to one end of the connecting base facing the fixed base, and the sliding rod passes through a through hole formed on the fixed base and can slide relative to the through hole;

[0021] It also includes a first spring sleeved on the slide rod, one end of the first spring abutting against the fixed seat, and the other end abutting against the extension plate fixed to the end of the slide rod, and the first spring is always in a compressed state.

[0022] As described above, the tree trimming lifting control device includes a pull handle fixed to the sliding seat.

[0023] As described above, the tree pruning lifting control device has a guide groove formed on the mounting base, and the connecting block connecting the connecting base and the sliding base passes through the guide groove and can slide relative to the guide groove.

[0024] Compared with the prior art, the beneficial effects of this utility model are:

[0025] When the drive gear rotates to cooperate with the driven gear to drive the roller to rotate in the forward direction (driving the sliding sleeve to move upward along the vertical frame), the ratchet does not restrict the ratchet wheel at this time, ensuring smooth movement when controlling the upward movement of the sliding sleeve and the adjustable ring-shaped part. However, when the user's hand leaves the rotating handle, the ratchet wheel tends to rotate in the opposite direction under the gravity of the sliding sleeve and the adjustable ring-shaped part. At this time, the ratchet restricts the ratchet wheel to ensure that the sliding sleeve will not fall down and cause safety hazards.

[0026] When it is necessary to control the downward movement of the sliding sleeve and adjustable ring-shaped component, the user manually pulls the handle, causing the sliding seat to move towards the shaft of the roller. This disengages the ratchet from the ratchet wheel, and the friction element provides rotational resistance to the roller shaft, preventing the sliding sleeve and adjustable ring-shaped component from falling rapidly under gravity when the ratchet disengages from the ratchet wheel, thus avoiding potential safety hazards. At this point, the user can manually rotate the handle in the opposite direction, driving the roller to rotate in the opposite direction through the engagement of the drive and driven gears, thereby causing the sliding sleeve to move smoothly downward along the vertical frame. This effectively solves the potential safety hazards of the sliding sleeve during movement, improving safety and convenience of use. Attached Figure Description

[0027] Figure 1 A schematic diagram of a landscape tree pruning aid device.

[0028] Figure 2 A front view of a landscape tree pruning aid.

[0029] Figure 3 A schematic diagram of the landscape tree pruning aid device from another angle.

[0030] Figure 4 This is a schematic diagram of the adjustable ring-shaped component in a landscape tree pruning aid device.

[0031] Figure 5 A schematic diagram of the adjustable ring-shaped component in a landscape tree pruning aid device from another angle.

[0032] Figure 6 A schematic diagram of the adjustable ring-shaped component in the landscape tree pruning auxiliary device in its separated state.

[0033] Figure 7 A schematic diagram of the adjustable ring-shaped component in a landscape tree pruning aid device at another angle of separation.

[0034] Figure 8 for Figure 7 Enlarged view of the structure at point A in the middle.

[0035] Figure 9 An exploded view of the fixed unit in a landscape tree pruning aid device.

[0036] Figure 10 An exploded view of the fixed unit in a landscape tree pruning aid device from another angle.

[0037] Figure 11 This is a schematic diagram of the locking mechanism in a landscape tree pruning auxiliary device.

[0038] Figure 12 This is a schematic diagram of the lifting drive device in a landscape tree pruning auxiliary device.

[0039] Figure 13 This is a structural diagram of the lifting drive device in a landscape tree pruning auxiliary device from another angle.

[0040] Figure 14 This is a structural diagram of the lifting drive device in a landscape tree pruning auxiliary device from another angle.

[0041] Figure 15 This is a schematic diagram showing the separation state of the lifting drive device in a landscape tree pruning auxiliary device.

[0042] Figure 16 This is a schematic diagram showing another angle separation state of the lifting drive device in the landscape tree pruning auxiliary device.

[0043] Figure 17 This is a schematic diagram showing another angle separation state of the lifting drive device in the landscape tree pruning auxiliary device.

[0044] Figure 18 This is a schematic diagram of the one-way control component in a landscape tree pruning auxiliary device.

[0045] In the picture:

[0046] 1-Base;

[0047] 2-Mounting bracket;

[0048] 3-Lifting drive device, 301-Mounting base, 3011-Guide groove, 302-Rope, 303-Roller, 304-Pull handle, 305-Driven gear, 306-Rotating handle, 307-Driving gear, 308-Ratchet, 309-Sliding seat, 310-Ratchet, 311-First spring, 312-Connecting seat, 313-Slide rod, 314-Friction component, 315-Fixed seat;

[0049] 4-Upright frame, 401-Gateway rail;

[0050] 5-Sliding sleeve, 501-Roller;

[0051] 6-Adjustable ring-shaped component, 601-First arc-shaped component, 6011-First arc-shaped rod, 6012-Second arc-shaped rod, 6013-Upright rod, 6014-Pass through groove, 602-Second arc-shaped component, 603-Hinge, 604-Limiting post, 605-Fixing unit, 6051-First locking component, 60511-First fixing hole, 6052-Second locking component, 60521-Second fixing hole, 6053-Fixing pin, 60531-Limiting pin hole, 6054-Card-releasing component, 60541-Card-releasing seat, 60542-Card pin, 60543-Actuating component, 60544-Second spring, 606-Abutting component, 607-First limiting rod, 608-Second limiting rod;

[0052] 7-Guide wheel. Detailed Implementation

[0053] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0054] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0055] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented even without certain specific details. In some instances, methods, means, and elements well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0056] Please see Figures 1-18 In this embodiment of the utility model, a landscape tree pruning auxiliary device includes a vertical frame 4, a tree pruning size auxiliary control mechanism, and a tree pruning lifting control device.

[0057] The tree pruning size auxiliary control mechanism includes an adjustable ring-shaped component 6, which includes a first arc-shaped component 601 and a second arc-shaped component 602 that are hinged to each other. The ends of the first arc-shaped component 601 and the second arc-shaped component 602 away from the hinge position are fixed by a fixing component. Specifically, the first arc-shaped component 601 and the second arc-shaped component 602 are hinged by a hinge 603.

[0058] The tree pruning lifting control device includes a lifting drive device 3, which includes a mounting base 301, a take-up and release roller assembly rotatably mounted on the mounting base 301, and a rope 302 connected to the take-up and release roller assembly. One end of the rope 302 away from the take-up and release roller assembly passes around a guide wheel 7 fixed on the upright frame 4 and is fixed to a sliding sleeve 5 fixed on the first arc-shaped member 601. The sliding sleeve 5 is sleeved on the upright frame 4.

[0059] In this embodiment, the landscape tree pruning assistance device is used to assist in pruning landscape trees to a fixed size (ring shape). In use, the device is placed next to the landscape tree, and then the second arc-shaped component 602 is wrapped around the landscape tree to cooperate with the first arc-shaped component 601 to hug the landscape tree. Then, the first arc-shaped component 601 and the second arc-shaped component 602 are fixed with a fixing component. At this time, the internal space of the first arc-shaped component 601 and the second arc-shaped component 602 is the size of the landscape tree after pruning. The operator controls the rotation of the winding roller assembly and changes the height of the adjustable ring-shaped component 6 with the rope 302, thereby realizing comprehensive pruning assistance for the landscape tree. This effectively eliminates the problem that the existing landscape tree pruning relies on manual visual perception, resulting in relatively low pruning neatness and uniformity.

[0060] It should be noted that the adjustable ring-shaped component 6 is formed by welding a metal rod-like structure. Tree branches can pass through the adjustable ring-shaped component 6. Therefore, the adjustable ring-shaped component 6 plays an auxiliary role without affecting the pruning of landscape trees.

[0061] To improve the stability of the vertical frame 4, a base 1 is installed at the bottom of the vertical frame 4. The base 1 is arranged in a "+" shape. In the specific implementation process, rollers can also be installed at the bottom of the base 1 to facilitate the movement of the entire device.

[0062] Preferably, the mounting base 301 is fixed on the mounting bracket 2 which is fixed to the base 1.

[0063] Further, please refer to Figure 3 At least two grooves 401 are formed on the vertical frame 4. A roller 501 is rotatably mounted on the sliding sleeve 5. The roller 501 is placed in the groove 401 and can roll along the groove 401, so that the sliding sleeve 5 can slide stably up and down on the vertical frame 4. This restricts the movement trajectory of the sliding sleeve 5, avoids deviation during the sliding process, and ensures the stability of the height adjustment of the adjustable ring-shaped part 6. At the same time, the use of roller 501 reduces the friction between the sliding sleeve 5 and the groove 401, making the sliding smoother. It also reduces the wear of the equipment, extends its service life, and saves effort when adjusting the adjustable ring-shaped part 6.

[0064] Please see Figures 4-11The fixing member includes a first limiting rod 607 formed at the end of the first arc-shaped member 601 away from the hinge position and a second limiting rod 608 formed at the end of the second arc-shaped member 602 away from the hinge position.

[0065] The first limiting rod 607 abuts against a plurality of abutting parts 606 installed on the second arc-shaped part 602;

[0066] A fixing unit 605 is installed on the second limiting rod 608, and the fixing unit 605 is fixedly engaged with a plurality of limiting posts 604 installed on the first arc-shaped member 601.

[0067] In this embodiment, the area enclosed by the first arc-shaped member 601 and the second arc-shaped member 602 can be adjusted according to different landscape tree pruning needs. The adjustment method is as follows:

[0068] The end of the second arc-shaped member 602 away from the hinge position can extend beyond the end of the first arc-shaped member 601 away from the hinge position, thereby changing the fixed position and changing the area enclosed between the first arc-shaped member 601 and the second arc-shaped member 602. Specifically, four equidistant limiting posts 604 are fixed on the first arc-shaped member 601. The user can fix the fixing unit 605 on different limiting posts 604 as needed to achieve adjustment.

[0069] In this embodiment, the number of abutment members 606 is the same as the number of limiting posts 604, and the distance between two adjacent limiting posts 604 is the same as the distance between two adjacent abutment members 606. Thus, when the first arc-shaped member 601 and the second arc-shaped member 602 are connected, the first limiting rod 607 and part of the limiting posts 604 can abut against the abutment members 606 to limit the first arc-shaped member 601 and ensure the connection stability after the area enclosed between the first arc-shaped member 601 and the second arc-shaped member 602 changes.

[0070] Preferably, the abutment member 606 has an arc-shaped groove on which the first limiting rod 607 and the limiting post 604 can be inserted, thereby improving the stability of the connection between the abutment member 606 and the first limiting rod 607 and the limiting post 604.

[0071] In one exemplary embodiment, the fixing unit 605 includes a first locking member 6051 fixed to the second limiting rod 608 and a second locking member 6052 hinged to the first locking member 6051. The first locking member 6051 and the second locking member 6052 can be wrapped around the limiting post 604 and fixed by a locking member. The locking member includes a fixing pin 6053. The fixing pin 6053 passes through the first fixing hole 60511 and the second fixing hole 60521 formed on the first locking member 6051 and the second locking member 6052 and is then engaged and fixed with a locking member 6054 installed on the second locking member 6052.

[0072] The locking component 6054 includes a locking seat 60541 fixed on the second locking component 6052. The locking seat 60541 has a placement groove. Two locking pins 60542 protruding from the locking seat 60541 are slidably installed in the placement groove. The locking pins 60542 are inserted into the limiting pin holes 60531 formed on the fixing pin 6053. The component also includes a second spring 60544 placed in the placement groove and located between the two locking pins 60542. The second spring 60544 is fixed to the two locking pins 60542 and provides elastic force for the two locking pins 60542 to move in opposite directions.

[0073] A toggle element 60543 is vertically fixed on the locking pin 60542. The toggle element 60543 allows the user to manually move the locking pin 60542 to disengage it from the limiting pin hole 60531, thereby unlocking the device.

[0074] When the second limiting rod 608 is positioned at one of the limiting posts 604, the user can rotate the second locking piece 6052 so that the second locking piece 6052 bypasses the limiting post 604 to cooperate with the first locking piece 6051 to encircle the limiting post 604. At this time, the centers of the first fixing hole 60511 and the second fixing hole 60521 are collinear. Then, the fixing pin 6053 is inserted through the first fixing hole 60511 and the second fixing hole 60521, so that the locking pin 60542 is engaged in the limiting pin hole 60531, thereby fixing the fixing pin 6053. This achieves the fixed position of the first arc-shaped part 601 and the second arc-shaped part 602 after adjustment. The insertion and engagement between the fixing pin 6053 and the locking pin 60542 makes the entire fixing process simple, convenient and quick, greatly improving the user's operating efficiency.

[0075] When it is necessary to adjust the enclosed area between the first arc-shaped member 601 and the second arc-shaped member 602, the locking pin 60542 is disengaged from the limiting pin hole 60531 by moving the toggle member 60543, thereby releasing the fixed state of the fixing pin 6053. Then, the second locking member 6052 is rotated to separate it from the first locking member 6051 to unlock it. The above adjustment steps (adjusting the fixed position between the first arc-shaped member 601 and the second arc-shaped member 602) are then repeated.

[0076] The first arc-shaped component 601 and the second arc-shaped component 602 have the same structure. Therefore, this embodiment will describe the specific structure of the first arc-shaped component 601 in detail, as follows:

[0077] The first arc-shaped component 601 includes a first arc-shaped rod 6011 and a second arc-shaped rod 6012. The first arc-shaped rod 6011 and the second arc-shaped rod 6012 are fixed together by a plurality of uprights 6013. A passage groove 6014 for the passage of landscape tree branches is formed between two adjacent uprights 6013.

[0078] Please see Figures 12-18 The take-up and release roller assembly includes a winding roller 303 rotatably mounted on the mounting base 301, one end of the rope 302 being fixed to the winding roller 303; a rotation drive unit for driving the winding roller 303 to rotate; and a one-way control member for controlling the one-way rotation of the winding roller 303. When the one-way control member is unlocked, the winding roller 303 can rotate in both directions.

[0079] The mounting base 301 is U-shaped, and the roller 303 is rotatably mounted in the mounting base 301, so that both ends of the roller 303 have supporting force, ensuring the rotational stability of the roller 303.

[0080] In one exemplary embodiment, the rotation drive unit includes:

[0081] Rotate the drive gear 307 mounted on the mounting base 301, and fix a rotation handle 306 on the shaft of the drive gear 307;

[0082] It also includes a driven gear 305 that is coaxially fixed with the roller 303, and the driven gear 305 meshes with the driving gear 307.

[0083] The rotating handle 306 drives the drive gear 307 to rotate. When the drive gear 307 rotates, it drives the winding roller 303 to rotate through the driven gear 305 that meshes with it, thereby winding or unwinding the rope 302 to adjust the height of the sliding sleeve 5, and thus change the height of the adjustable ring-shaped part 6.

[0084] It should be noted that, in order to achieve the stability of the adjustable ring-shaped component 6, two ropes 302 can be set to connect the sliding sleeve 5 and the roller 303. Specifically, the two ropes 302 are defined as the first rope and the second rope. The first rope passes around the guide wheel 7 and its two ends are fixed to the upper end of the sliding sleeve 5 and the roller 303, respectively. One end of the second rope is fixed to the lower end of the sliding sleeve 5 and the other end is fixed to the roller 303. The first rope and the second rope have opposite winding directions on the roller 303.

[0085] Furthermore, the unidirectional control element includes:

[0086] A ratchet 308 is coaxially fixed with the drive gear 307 and a sliding seat 309 is slidably connected to the mounting base 301. A ratchet tooth 310 that engages with the ratchet 308 is installed on the side of the sliding seat 309 facing the ratchet 308. A friction element 314 is formed on the side of the sliding seat 309 away from the ratchet 308. A pull handle 304 is also fixed on the sliding seat 309.

[0087] It also includes an elastic element connecting the slide seat 309 and the mounting seat 301, the elastic element providing the slide seat 309 with a force toward the ratchet 308.

[0088] In this embodiment, when the drive gear 307 rotates to cooperate with the driven gear 305 to drive the roller 303 to rotate in the forward direction (driving the sliding sleeve 5 to move upward along the vertical frame 4), the ratchet 310 does not restrict the ratchet 308, ensuring that the sliding sleeve 5 and the adjustable ring-like part 6 can move smoothly when controlled to move upward. When the user's hand leaves the rotating handle 306, the ratchet 308 tends to rotate in the opposite direction under the gravity of the sliding sleeve 5 and the adjustable ring-like part 6. At this time, the ratchet 310 restricts the ratchet 308, ensuring that the sliding sleeve 5 and the adjustable ring-like part 6 will not fall down and cause safety hazards.

[0089] When it is necessary to control the downward movement of the sliding sleeve 5 and the adjustable ring-like component 6, the user manually pulls the handle 304, causing the sliding seat 309 to move towards the pivot position of the roller 303. This allows the ratchet 310 to disengage from the ratchet 308. Simultaneously, the friction element 314 abuts against the pivot of the roller 303, providing rotational resistance and preventing the sliding sleeve 5 and the adjustable ring-like component 6 from falling rapidly under gravity when the ratchet 310 disengages from the ratchet 308, thus preventing potential safety hazards. At this time, the user can manually rotate the handle 306 in the opposite direction. Through the cooperation of the drive gear 307 and the driven gear 305, the roller 303 is driven to rotate in the opposite direction, thereby causing the sliding sleeve 5 and the adjustable ring-like component 6 to move smoothly downward along the vertical frame 4. This effectively solves the potential safety hazards of the sliding sleeve 5 and the adjustable ring-like component 6 during movement, improving the safety and convenience of use.

[0090] The elastic element includes a fixed seat 315 fixed on the mounting base 301 and a connecting seat 312 fixedly connected to the sliding seat 309. At least one slide rod 313 is fixed to one end of the connecting seat 312 facing the fixed seat 315. The slide rod 313 passes through a through hole formed on the fixed seat 315 and can slide relative to the through hole. It also includes a first spring 311 sleeved on the slide rod 313. One end of the first spring 311 abuts against the fixed seat 315, and the other end abuts against an extension disc fixed to the end of the slide rod 313. The first spring 311 is always in a compressed state.

[0091] The first spring 311 provides a force to the connecting seat 312 in a direction away from the roller 303, ensuring that the ratchet 308 and the ratchet 310 remain engaged when the sliding seat 309 is not subjected to external force, and at this time the friction element 314 does not come into contact with the rotating shaft of the roller 303, ensuring that the resistance when the roller 303 rotates is relatively small.

[0092] It should be further explained that a guide groove 3011 is formed on the mounting base 301, and the connecting block connecting the connecting base 312 and the sliding base 309 passes through the guide groove 3011 and can slide relative to the guide groove 3011.

[0093] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0094] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A tree pruning lifting control device for controlling the vertical lifting of a sliding sleeve (5) mounted on a vertical frame (4), characterized in that, Including lifting drive device (3); The lifting drive device (3) includes a mounting base (301), a take-up and release roller assembly rotatably mounted on the mounting base (301), and a cable (302) connecting the take-up and release roller assembly. One end of the cable (302) away from the take-up and release roller assembly passes over a guide wheel (7) fixed to the vertical frame (4) and is fixed to a sliding sleeve (5). The sliding sleeve (5) is fitted onto the vertical frame (4). The take-up and release roller assembly includes: Rotate the roller (303) mounted on the mounting base (301), with one end of the rope (302) fixed to the roller (303); A rotation drive unit for driving the rotation of the roller (303); In addition, a one-way control member for controlling the one-way rotation of the roller (303), wherein when the one-way control member is unlocked, the roller (303) can rotate in both directions.

2. The tree pruning lifting control device according to claim 1, characterized in that, The rotation drive unit includes: Rotate the drive gear (307) mounted on the mounting base (301), and fix a rotating handle (306) on the shaft of the drive gear (307). It also includes a driven gear (305) fixed coaxially with the roller (303), the driven gear (305) meshing with the driving gear (307).

3. The tree pruning lifting control device according to claim 2, characterized in that, The one-way control element includes: A ratchet (308) is fixed coaxially with the drive gear (307) and a sliding seat (309) is slidably connected to the mounting base (301). The sliding seat (309) has ratchet teeth (310) that cooperate with the ratchet (308) on the side facing the ratchet (308), and a friction element (314) is formed on the side of the sliding seat (309) away from the ratchet (308). It also includes an elastic element connecting the slide (309) and the mounting base (301), the elastic element providing the slide (309) with a force toward the ratchet (308).

4. A tree pruning lifting control device according to claim 3, characterized in that, The elastic element includes: A fixed seat (315) is fixed on the mounting base (301) and a connecting seat (312) is fixedly connected to the sliding seat (309). At least one slide rod (313) is fixed at one end of the connecting seat (312) facing the fixed seat (315). The slide rod (313) passes through a through hole formed on the fixed seat (315) and can slide relative to the through hole. It also includes a first spring (311) sleeved on the slide rod (313), one end of the first spring (311) abutting against the fixed seat (315), and the other end abutting against the extension disc fixed to the end of the slide rod (313), and the first spring (311) is always in a compressed state.

5. A tree pruning lifting control device according to claim 3, characterized in that, A pull handle (304) is also fixed on the sliding seat (309).

6. A tree pruning lifting control device according to claim 4, characterized in that, The mounting base (301) has a guide groove (3011) formed thereon. The connecting block connecting the connecting base (312) and the sliding base (309) passes through the guide groove (3011) and can slide relative to the guide groove (3011).

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