Electric pruning shears with safety

Abstract

The utility model discloses a safe electric pruning shears uses, belongs to electric pruning shears technical field, aims at solving the stress of transmission part (gear, shaft etc. ) in prior art is difficult to distribute evenly, and local stress concentration can accelerate gear, shaft wear, shorten component life, more key is, under uneven stress state, the connected blade will shake, shift, on the one hand, cause the unevenness of incision, difficult accurate control blade track and shearing force, and the poor pruning quality will make plant wound difficult to heal, increase the risk of pathogenic infection, threaten the safety of plant growth, on the other hand, the abnormal shaking of blade can easily make the operator hand fatigue, slip, and even possibly because of blade out of control, injure the human body, there is the hidden danger of operation safety, at the same time, the stress problem can also increase the failure rate of bearing parts, and frequent failure not only delays the operation, also makes the equipment stability decline, further amplifies the problem of safety risk. Including pruning shears aluminum frame body, the upper portion of pruning shears aluminum frame body is equipped with aluminum dress dish.

Description

Technical Field

[0001] This utility model belongs to the technical field of electric pruning shears, specifically relating to a safe electric pruning shear. Background Technology

[0002] Currently, various trees and flowers are often planted in some gardens or green belts. However, during the growth process of plants, it is necessary to prune, thin out or otherwise treat them regularly to promote their growth or shape them. At this time, electric pruning shears are needed.

[0003] In modern electric pruning shears, the transmission components (gears, shafts, etc.) are difficult to distribute force evenly during use. Localized stress concentration accelerates wear on gears and shafts, shortening component lifespan. More importantly, under uneven force, the connected blades will vibrate and shift. This results in uneven cuts, making it difficult to accurately control the blade trajectory and shearing force. Poor pruning quality makes plant wounds difficult to heal, increases the risk of bacterial infection, and threatens plant growth. On the other hand, abnormal blade vibration can easily cause operator fatigue and slippage, and may even cause accidental injury due to blade malfunction, posing a safety hazard. At the same time, force issues also increase the failure rate of components such as bearings. Frequent failures not only delay operations but also reduce equipment stability, further amplifying safety risks. Utility Model Content

[0004] (1) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a safe electric pruning shears. It aims to solve the problems of uneven force distribution in transmission components (gears, shafts, etc.), which leads to localized stress concentration that accelerates wear and shortens component lifespan. More importantly, uneven force causes the connected blades to vibrate and shift, resulting in uneven cuts, difficulty in accurately controlling blade trajectory and shearing force, poor pruning quality that hinders wound healing, increases the risk of bacterial infection, and threatens plant growth. Furthermore, abnormal blade vibration can cause operator fatigue, slippage, and even accidental injury due to blade malfunction, posing a safety hazard. Additionally, force issues increase the failure rate of components such as bearings; frequent malfunctions not only delay operations but also reduce equipment stability, further amplifying safety risks.

[0006] (2) Technical solution

[0007] To solve the above-mentioned technical problems, this utility model provides a safe electric pruning shear, including an aluminum frame. An aluminum mounting plate is installed on the upper part of the frame, and a mounting groove is opened at the end of the frame. The groove contains first bearings, and bevel gears are installed in the middle of multiple first bearings. A disc gear meshes with the top of the bevel gear, and a spur gear is inserted in the middle of the disc gear. A second bearing is fitted around one side of the spur gear, and a threaded groove is opened in the middle of the top of the spur gear. The part is provided with a threaded bolt, and a washer is fitted on one end of the threaded bolt. A third bearing is fitted on the inner side of the threaded bolt and the opposite section of the washer. An enlarged disc is fixed around the periphery of the third bearing. The lower periphery of the enlarged disc has external threads. The lower inner side of the aluminum plate has internal threads. A preset groove is opened in the middle of both ends of the enlarged disc. A return spring is installed in the middle of the preset groove. A guide locking rod is fixed at the top of the return spring. An arc-shaped head is fixed at the top of the guide locking rod. A rubber pad is provided around the guide locking rod. Limit grooves are opened on both sides of the upper section of the aluminum plate.

[0008] Furthermore, the bevel gear and the disc gear are connected by meshing transmission, and the spur gear inserted in the middle of the disc gear can be connected by a driven rotational connection using the corresponding second bearing in the aluminum frame of the pruning shears.

[0009] Furthermore, the threaded bolt is fixedly connected to the spur gear by a threaded groove, and the bolt section at the opposite end of the threaded bolt and the spur gear is fitted with a washer and a third bearing.

[0010] Furthermore, the enlarged disc is fixedly connected to its aluminum mounting plate by external and internal threads.

[0011] Furthermore, the preset slots are symmetrically opened on the middle of both sides of the enlarged disc.

[0012] Furthermore, the guide lock rod utilizes the spring force of the reset spring and the preset groove for a guiding telescopic connection.

[0013] Furthermore, the overall dimensions of the guide lock rod match the dimensions of the limiting grooves opened on both sides of its aluminum plate.

[0014] Furthermore, rubber pads are fixedly attached to both sides of the guide lock rod.

[0015] (3) Beneficial effects

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the actual use of the pruning aluminum frame of this utility model, the drive end drives the bevel gear to rotate stably under the support of multiple first bearings. The bevel gear drives the disc gear to rotate synchronously through meshing transmission. At this time, the spur gear inserted in the middle of the disc gear rotates under the protection of the second bearing, thereby realizing precise stroke control of the moving tool to the fixed tool. This device widens and heightens the aluminum plate and uses its internal thread to firmly thread the enlarged disc onto the aluminum plate. Since a third bearing is set in the middle of the aluminum plate, after the thread is fixed, the third bearing will fit tightly against the shim above the disc gear. At the same time, the guide locking rods and arc-shaped heads at both ends of the enlarged disc, under the elastic force of the return spring, accurately engage with the corresponding limit grooves of the aluminum plate, forming a double fixing structure, effectively avoiding the loosening problem that may occur with single thread fixing. Subsequently, the operator will... The threaded bolt passes sequentially through the third bearing and the washer, and then, utilizing its threaded structure, is screwed into the threaded groove at the top of the spur gear for fixation. In this way, the spur gear is not only supported and fixed by the second bearing, but also establishes a stable connection with the enlarged disc, significantly distributing the force on the bearing and reducing the risk of damage. In addition, the widened and heightened aluminum disc, combined with the connection design between the spur gear and the enlarged disc, makes the force on the entire transmission system more balanced and reasonable. In high-intensity operation scenarios such as pruning large branches, it can effectively prevent tooth skipping and excessive wear, reduce damage to key components such as disc gears, bevel gears, and spur gears. The optimized transmission components can also ensure smoother blade movement, significantly improve pruning accuracy, make cuts cleaner, and promote plant wound healing. At the same time, it avoids pruning deviations caused by component shaking and uneven force, thereby significantly extending the overall service life of the pruning shears and reducing maintenance and replacement costs. Attached Figure Description

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

[0019] Figure 1 This is a schematic diagram of the structure of this utility model in a three-dimensional assembled state;

[0020] Figure 2 This is a schematic diagram of the structure in a partially disassembled three-dimensional configuration.

[0021] Figure 3 This is a schematic diagram of the structure under three-dimensional explosion conditions;

[0022] Figure 4 A top-view perspective diagram of the enlarged disc structure;

[0023] Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle.

[0024] The markings in the attached diagram are as follows: 1. Aluminum frame for pruning; 2. Aluminum mounting tray; 3. Groove; 4. First bearing; 5. Bevel gear; 6. Disc gear; 7. Spur gear; 8. Second bearing; 9. Threaded groove; 10. Threaded bolt; 11. Washer; 12. Third bearing; 13. Enlarged disc; 14. External thread; 15. Internal thread; 16. Pre-set groove; 17. Return spring; 18. Guide locking rod; 19. Arc-shaped head; 20. Rubber pad; 21. Limiting groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This specific embodiment is a safe electric pruning shears, the structural diagram of which is shown below. Figures 1 to 4As shown, the pruning frame includes an aluminum frame 1, with an aluminum mounting plate 2 mounted on its upper part. A mounting groove 3 is formed at the end of the pruning frame 1. The mounting groove 3 contains first bearings 4, and bevel gears 5 are mounted in the middle of multiple first bearings 4. A disc gear 6 meshes with the top of the bevel gear 5, and a spur gear 7 is inserted in the middle of the disc gear 6. A second bearing 8 is mounted around one end of the spur gear 7. The bevel gear 5 and the disc gear 6 are meshed and connected. The spur gear 7 inserted in the middle of the disc gear 6 can be driven to rotate using the corresponding second bearing 8 inside the pruning frame 1. A threaded groove 9 is formed at the top center of the spur gear 7, and a threaded rod 10 is provided in the middle of the disc gear 6. A washer 11 is fitted onto one end of the threaded bolt 10. A third bearing 12 is fitted onto the inner edge of the threaded bolt 10 and the opposite section of the washer 11. The threaded bolt 10 is threadedly fixed to the spur gear 7 via the threaded groove 9. The washer 11 and the third bearing 12 are fitted adjacent to the bolt section opposite to the spur gear 7. An enlarged disc 13 is fixed around the periphery of the third bearing 12. External threads 14 are formed on the lower periphery of the enlarged disc 13, and internal threads 15 are formed on the lower inner side of the aluminum plate 2. The enlarged disc 13 is threadedly fixed to the aluminum plate 2 via the external threads 14 and internal threads 15. Pre-set grooves 16 are symmetrically formed on the middle of both ends of the enlarged disc 13. A return spring 17 is installed in the middle of the preset groove 16. A guide lock rod 18 is fixed at the top of the return spring 17. The guide lock rod 18 is connected to the preset groove 16 by the elastic force of the return spring 17. An arc-shaped head 19 is fixed at the top of the guide lock rod 18. Rubber pads 20 are provided around the guide lock rod 18. Rubber pads 20 are attached and fixed on both sides of the guide lock rod 18. Limit grooves 21 are opened on both sides of the upper section of the aluminum plate 2. The overall size of the guide lock rod 18 matches the size of the limit grooves 21 opened on both sides of the aluminum plate 2. In the actual use of the pruning aluminum frame 1, the drive end will drive the bevel gear 5 to rotate stably under the support of multiple first bearings 4. The bevel gear 5 drives the disc gear 6 to rotate synchronously through meshing transmission. At this time, the insert The spur gear 7, mounted in the middle of the disc gear 6, rotates under the protection of the second bearing 8, thereby achieving precise stroke control of the moving tool towards the fixed tool. This device widens and heightens the aluminum mounting plate 2, and uses its internal thread 15 to firmly thread the enlarged disc 13 onto the aluminum mounting plate 2. Since a third bearing 12 is located in the middle of the aluminum mounting plate 2, after the threading is completed, the third bearing 12 will tightly fit against the washer 11 above the disc gear 6. Simultaneously, the guide locking rods 18 and arc-shaped heads 19 at both ends of the enlarged disc 13, under the elastic force of the return spring 17, precisely engage with the corresponding limiting grooves 21 of the aluminum mounting plate 2, forming a double-fixing structure. This effectively avoids the loosening problem that may occur with a single threaded fixation. Subsequently…The operator passes the threaded rod 10 through the third bearing 12 and the washer 11 in sequence, and then screws it into the threaded groove 9 at the top of the spur gear 7 for fixation, utilizing its threaded structure. In this way, the spur gear 7 is not only supported and fixed by the second bearing 8, but also establishes a stable connection with the enlarged disc 13, significantly distributing the stress on the bearing and reducing the risk of damage. Furthermore, the widened and heightened aluminum disc 2, combined with the connection design between the spur gear 7 and the enlarged disc 13, makes the entire transmission system more evenly and rationally stressed. In high-intensity operations such as pruning large branches, this effectively prevents tooth skipping and excessive wear, reducing damage to key components such as the disc gear 6, bevel gear 5, and spur gear 7. The optimized transmission components also ensure smoother blade movement, significantly improving pruning accuracy, resulting in cleaner cuts that promote plant wound healing. Simultaneously, it avoids pruning deviations caused by component wobbling and uneven stress, thus significantly extending the overall service life of the pruning shears and reducing maintenance and replacement costs.

[0027] Working Principle: During actual use of the pruning aluminum frame 1, the drive end drives the bevel gear 5 to rotate stably under the support of multiple first bearings 4. The bevel gear 5 drives the disc gear 6 to rotate synchronously through meshing transmission. At this time, the spur gear 7, which is inserted in the middle of the disc gear 6, rotates under the protection of the second bearing 8, thereby realizing precise stroke control of the moving tool to the fixed tool. This device widens and heightens the aluminum mounting plate 2, and uses its internal internal thread 15 to firmly thread the enlarged disc 13 onto the aluminum mounting plate 2. Since the aluminum mounting plate 2 is provided with a third bearing 12 in the middle, after the thread is fixed, the third bearing 12 will tightly fit against the washer 11 above the disc gear 6. At the same time, the guide locking rods 18 and arc-shaped heads 19 at both ends of the enlarged disc 13, under the elastic force of the return spring 17, are precisely locked into the corresponding limit grooves 21 of the aluminum mounting plate 2, forming a double fixing structure, which effectively avoids the loosening problem that may occur with single thread fixing. Afterwards, the operator passes the threaded rod 10 through the third bearing 12 and the washer 11 in sequence, and uses its threaded structure to screw it into the threaded groove 9 at the top of the spur gear 7 for fixation. In this way, the spur gear 7 is not only supported and fixed by the second bearing 8, but also establishes a stable connection with the enlarged disc 13, which significantly disperses the force on the bearing and reduces the risk of damage. In addition, the widened and heightened aluminum disc 2, together with the connection design between the spur gear 7 and the enlarged disc 13, makes the force on the entire transmission system more balanced and reasonable. In high-intensity operation scenarios such as pruning large branches, it can effectively prevent tooth skipping and excessive wear, reduce damage to key components such as the disc gear 6, bevel gear 5 and spur gear 7. The optimized transmission components can also ensure that the blade movement is more stable, greatly improve the pruning accuracy, make the cut more neat, and facilitate the healing of plant wounds. At the same time, it avoids pruning deviations caused by component shaking and uneven force, thereby significantly extending the overall service life of the pruning shears and reducing maintenance and replacement costs.

[0028] All technical features in this embodiment can be freely combined according to actual needs.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A safe electric pruning shears, comprising an aluminum frame (1) for pruning shears, characterized in that, The upper part of the pruning aluminum frame (1) is equipped with an aluminum mounting plate (2), and the end of the pruning aluminum frame (1) is provided with a mounting groove (3). The mounting groove (3) contains a first bearing (4), and a bevel gear (5) is installed in the middle of the multiple first bearings (4). The top of the bevel gear (5) is meshed with a disc gear (6), and a spur gear (7) is inserted in the middle of the disc gear (6). A second bearing (8) is assembled around a section of the spur gear (7), and a threaded mounting groove (9) is opened in the middle of the top of the spur gear (7). A threaded rod (10) is provided in the middle of the disc gear (6), and a washer (11) is fitted on a section of the threaded rod (10). A third bearing (12) is fitted on the inner edge and the opposite section of the gasket (11), and an enlarged disc (13) is fixed around the periphery of the third bearing (12). The lower section of the enlarged disc (13) is provided with an external thread (14). The lower section of the inner side of the aluminum plate (2) is provided with an internal thread (15). The middle of both ends of the enlarged disc (13) is provided with a preset groove (16), and a reset spring (17) is installed in the middle of the preset groove (16). The top of the reset spring (17) is fixed with a guide lock rod (18), and the top of the guide lock rod (18) is fixed with an arc head (19). The periphery of the guide lock rod (18) is provided with a rubber pad (20). Limit grooves (21) are opened on both sides of the upper section of the aluminum plate (2).

2. The electric pruning shears for safe use according to claim 1, characterized in that, The bevel gear (5) is meshed with the disc gear (6), and the spur gear (7) inserted in the middle of the disc gear (6) can be driven to rotate by the corresponding second bearing (8) in the pruning aluminum frame (1).

3. The electric pruning shears for safe use according to claim 1, characterized in that, The threaded rod (10) is fixedly connected to the spur gear (7) by the threaded groove (9), and the rod section at the opposite end of the threaded rod (10) and the spur gear (7) is fitted with a washer (11) and a third bearing (12).

4. The electric pruning shears for safe use according to claim 1, characterized in that, The enlarged disc (13) is fixedly connected to the aluminum plate (2) by external thread (14) and internal thread (15).

5. A safe electric pruning shears according to claim 1, characterized in that, The preset slots (16) are symmetrically opened on the middle of both sides of the enlarged disc (13).

6. The electric pruning shears for safe use according to claim 1, characterized in that, The guide lock rod (18) is telescopically connected to the preset groove (16) by the elastic force of the return spring (17).

7. A safe electric pruning shears according to claim 1, characterized in that, The overall dimensions of the guide rod (18) match the dimensions of the limiting grooves (21) opened on both sides of its aluminum plate (2).

8. A safe electric pruning shears according to claim 1, characterized in that, Rubber pads (20) are attached and fixed on both sides of the guide lock rod (18).

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