Multifunctional telescopic pruning machine
By using a nested design of primary, secondary, and tertiary extension cylinders, along with a fixing structure consisting of an upper collar, a lower collar, and a locking screw, the problem of structural damage during the telescopic pruning machine's extension and retraction process is solved. This achieves flexible extension and retraction as well as secure fixation, thereby enhancing the equipment's service life and operational safety.
Patent Information
- Application Number
- CN202423270872.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Existing telescopic pruning machines are prone to damage to their telescopic structure during the telescopic process due to excessive use of the equipment itself, which reduces their effectiveness.
The telescopic rod adopts a nested design of primary, secondary, and tertiary telescopic tubes, combined with an upper collar, lower collar, and locking screw fixing structure to achieve flexible adjustment and fixation. A sponge ring is glued to the inside of the collar for lubrication. The anti-smashing structure achieves flexible flipping of the barrier plate through the linkage of the push block, the built-in extension plate, and the ring frame to prevent branches from falling.
This technology enables the telescopic pruning machine to be flexible in its extension and retraction while remaining securely fixed, extending the equipment's service life, improving operational safety and ease of maintenance, and enhancing the equipment's versatility and flexibility.
Smart Images
Figure CN223786680U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pruning equipment technology, specifically a multi-functional telescopic pruning machine. Background Technology
[0002] Telescopic pruning shears are efficient and practical garden machinery, primarily used for pruning hard-to-reach areas such as median strips and garden branches. Their design features and functions make them an indispensable tool in landscaping. In terms of design, the telescopic arm can extend and retract freely as needed, adapting to hedges and branches of varying heights and widths, making pruning convenient, efficient, and easily accessible to hard-to-reach areas. The telescopic arm is made of high-strength steel, possessing excellent bending and tensile strength, ensuring stability and safety during pruning. The advanced cutting system uses high-speed rotating blades to easily cut branches and hedges, achieving ideal pruning results, and is equipped with an automatic lubrication system to reduce blade wear and extend service life. The user-friendly operation design allows operators to easily control the telescopic arm extension and retraction and the cutting system's on / off switch via a control panel for precise pruning, and includes safety features such as a protective cover and an emergency stop button to ensure operator safety. In terms of application scenarios, telescopic pruning shears can be used not only for pruning median strips and garden branches but also for greening maintenance in parks, squares, streets, and other public places. Compared to traditional pruning methods, they improve work efficiency and reduce labor intensity and costs.
[0003] Publication number CN218789260U discloses a multi-functional telescopic pruning machine, including a telescopic adjusting rod with a handle. A mounting block is connected to the end of the telescopic adjusting rod away from the handle. A working housing is mounted on the mounting block, and a cutting component for cutting branches is housed within the working housing. A fan is also connected to the working housing, and a transmission mechanism for connecting the cutting component and the fan is located within the working housing. An L-shaped pipe is connected to the air inlet of the fan, and an air inlet hopper is located at the end of the L-shaped pipe away from the fan. A protective component that cooperates with the cutting component is located within the L-shaped pipe. This invention utilizes the cutting component to drive the fan during branch cutting, collecting the sawdust generated during the cutting process. Furthermore, when the cutting component is not in use, the protective component protects it from harm, improving the practicality of the device.
[0004] The aforementioned technology utilizes connecting cutting components and protective components to prevent injury to the human body during use. However, many devices suffer damage to their telescopic structure during the telescopic process due to excessive use, which greatly reduces their effectiveness.
[0005] Therefore, in view of this, we have studied and improved the existing shortcomings and proposed a multi-functional telescopic pruning machine. Utility Model Content
[0006] The purpose of this invention is to provide a multifunctional telescopic pruning machine to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: A multifunctional telescopic pruning machine, comprising: an operating body, a first-stage telescopic cylinder at the upper end of the operating body, a second-stage telescopic cylinder extending upward from the inner side of the first-stage telescopic cylinder, a third-stage telescopic cylinder extending upward from the inner side of the second-stage telescopic cylinder, multiple positioning holes on the outer sides of the first-stage and second-stage telescopic cylinders, a limiting ring at the middle of the outer side of the third-stage telescopic cylinder, a second telescopic rod downward on one side of the bottom end of the limiting ring, an upper collar at the bottom end of the second telescopic rod, a first telescopic rod downward on one side of the bottom end of the upper collar, a lower collar at the bottom end of the first telescopic rod, and insertion holes with the same diameter as the positioning holes on the outer sides of the lower collar and upper collar on both sides of the outer sides of the upper collar and upper collar, and a locking screw extending transversely through the inner side of the insertion holes on the outer sides of the upper collar and lower collar;
[0008] The top of the three-stage extension cylinder is equipped with a machine head, the top of the machine head is equipped with a cutting head, and the two sides of the machine head are equipped with anti-smashing structures.
[0009] Furthermore, the center point of the upper collar, the center point of the lower collar, and the center point of the three-stage extension cylinder are on the same straight line, which facilitates the installation of the three-stage extension cylinder, the upper collar, and the lower collar.
[0010] Furthermore, annular anti-wear washers are laid on the inner sides of the lower and upper collars to extend their service life.
[0011] Furthermore, the three-stage extension cylinder and the limiting ring are fixedly connected, and the machine head is trapezoidal in shape, which facilitates the three-stage extension cylinder to limit the movement of the upper and lower collars. At the same time, the trapezoidal outer shape of the machine head can effectively prevent the inner rotating shaft ring of the ring frame from rotating excessively, thereby causing the baffle plate to overturn.
[0012] Furthermore, the anti-smashing structure includes a barrier plate, an internal extension plate, an outer shell, a push block, and a ring frame. The outer shell is vertically fixed on both sides of the machine head. A rectangular hole is vertically opened on the front of the outer shell. A cavity is provided on the inner side of the outer shell. The internal extension plate is vertically placed in the inner cavity of the outer shell. A ring frame is provided at the top of the internal extension plate. A barrier plate is provided at the top of the ring frame. A push block is horizontally provided in the middle of the front of the internal extension plate. The ring frame is composed of a rotating shaft ring and a flipping bracket, which facilitates the ring frame to drive the barrier plate to rotate.
[0013] Furthermore, the diameter of the inner rotating shaft ring of the ring frame is larger than the width of the outer shell, and the ring frame can drive the baffle plate to rotate, so that the baffle plate can be adjusted in angle during the movement of the ring frame and the inner extension plate.
[0014] Furthermore, the width of the push block is smaller than the width of the rectangular hole on the front of the outer shell, making it easier for the user to move the push block.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This utility model features a secondary extension cylinder that slides vertically inside a primary extension cylinder, and a tertiary extension cylinder that slides vertically inside the secondary extension cylinder. When the primary, secondary, and tertiary extension cylinders work together to extend the working length of the machine head, pulling the upper collar at the lower end of the limiting ring causes the upper collar to wrap around the outer side of the secondary extension cylinder. Pulling the lower collar at the lower end of the upper collar causes the lower collar to wrap around the outer side of the primary extension cylinder. Simultaneously, the first and second telescopic rods extend and retract in coordination with the movement of the upper and lower collars. The locking screw inserts along the lower collar... The first-stage extension cylinder and the locking screw are inserted into the second-stage extension cylinder along the upper collar. This allows the first-stage, second-stage, and third-stage extension cylinders to be extended or shortened as a whole. The locking screw, upper collar, and lower collar structure can fix the length and structure of the first-stage, second-stage, and third-stage extension cylinders. Furthermore, the upper collar and lower collar are located on the outside of the first-stage and second-stage extension cylinders, allowing the user to replace and repair the locking screw, lower collar, and upper collar, and also making it easy for the user to observe the usage of the upper collar, lower collar, and locking screw.
[0017] 2. This utility model uses an upward or downward movable push block, which drives the built-in extension plate to move up and down inside the outer shell. The built-in extension plate drives the ring frame to rotate and move linearly in both directions. When the rotating shaft ring on the ring frame structure abuts against the outside of the machine head, the ring frame is forced to rotate. At this time, the ring frame drives the baffle plate to flip. In this way, the baffle plate can flexibly surround both sides of the cutting head. When the cutting head is pruning branches, the baffle plate can prevent some branches from falling. Attached Figure Description
[0018] Figure 1 This is a first front view structural schematic diagram of the present invention;
[0019] Figure 2 This is a schematic diagram of the second axial side front view of the present invention;
[0020] Figure 3 This is a schematic diagram showing the separation of the first part of the structure of this utility model;
[0021] Figure 4 This is a schematic diagram of the structural separation of the second part of this utility model;
[0022] Figure 5 This is a schematic diagram of the first anti-smashing structure of this utility model;
[0023] Figure 6 This is a schematic diagram of the second anti-smashing structure of this utility model.
[0024] In the diagram: 1. Operating machine body; 2. First-stage extension cylinder; 3. Second-stage extension cylinder; 4. Third-stage extension cylinder; 5. Anti-smashing structure; 51. Barrier plate; 52. Internal extension plate; 53. External shell; 54. Push block; 55. Ring frame; 6. Cutting head; 7. Machine head; 8. Upper collar; 9. Lower collar; 10. Limiting ring; 11. First telescopic rod; 12. Second telescopic rod; 13. Locking screw. 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] like Figure 1 - Figure 6 As shown, a multifunctional telescopic pruning machine includes: an operating body 1, a first-stage telescopic cylinder 2 at the upper end of the operating body 1, a second-stage telescopic cylinder 3 extending upward from the inner side of the first-stage telescopic cylinder 2, a third-stage telescopic cylinder 4 extending upward from the inner side of the second-stage telescopic cylinder 3, multiple positioning holes on the outer sides of the first-stage telescopic cylinder 2 and the second-stage telescopic cylinder 3, a limiting ring 10 being engaged at the middle of the outer side of the third-stage telescopic cylinder 4, a second telescopic rod 12 being disposed downward from one side of the bottom end of the limiting ring 10, an upper sleeve 8 being disposed at the bottom end of the second telescopic rod 12, a first telescopic rod 11 being disposed downward from one side of the bottom end of the upper sleeve 8, a lower sleeve 9 being disposed at the bottom end of the first telescopic rod 11, and insertion holes with the same diameter as the positioning holes on the outer sides of the lower sleeve 9 and the upper sleeve 8 being opened on both sides of the outer side of the lower sleeve 9 and the upper sleeve 8, and a locking screw 13 being transversely inserted through the inner side of the insertion holes on the outer sides of the upper sleeve 8 and the lower sleeve 9.
[0027] The top of the three-stage extension cylinder 4 is equipped with a machine head 7, the top of the machine head 7 is equipped with a cutting head 6, and the two sides of the machine head 7 are equipped with anti-smashing structures 5.
[0028] The remaining parts, due to the presence of several positioning holes on the outer sides of the first-stage extension cylinder 2 and the second-stage extension cylinder 3, when the upper collar 8 and the lower collar 9 are fitted onto the outer sides of the first-stage extension cylinder 2 and the second-stage extension cylinder 3, pulling the upper collar 8 and the lower collar 9, along with the first telescopic rod 11 and the second telescopic rod 12 assisting the upper collar 8 and the lower collar 9 to move to a suitable position on the outer side of the first-stage extension cylinder 2 and the second-stage extension cylinder 3, allows the locking screw 13 to be inserted into the inner side of the first-stage extension cylinder 2 and the second-stage extension cylinder 3 along with the upper collar 8 and the lower collar 9, while the position of the limiting ring 10 on the outer side of the third-stage extension cylinder 4 remains unchanged. At this point, the upper limit of movement of the upper collar 8 and the lower collar 9 is determined, allowing the user to... By swapping the installation positions of the upper collar 8, lower collar 9, and limiting ring 10, the lower limit of the movement of the upper collar 8 and lower collar 9 is locked, allowing the user to insert them without using the locking screw 13. If the locking screw 13 is damaged, the user can replace it with a regular screw. The user can also attach a sponge ring to the inside of the upper collar 8 and lower collar 9 and soak the sponge ring with lubricating oil. This will cause the lubricating oil to overflow from the sponge ring inside the upper collar 8 and lower collar 9 during use, thus performing routine maintenance on the outside of the first-stage extension cylinder 2 and the second-stage extension cylinder 3.
[0029] This has resulted in the following effects and novel technologies:
[0030] In terms of effectiveness, firstly, the flexible telescopic function is achieved through the nested design of the first-stage telescopic cylinder 2, the second-stage telescopic cylinder 3, and the third-stage telescopic cylinder 4, which allows for flexible adjustment of the working length of the machine head 7. Users can extend or shorten the length of the telescopic cylinder as needed to adapt to tree pruning work at different heights and distances, greatly improving its versatility. For example, the telescopic cylinder can be lengthened when pruning tall trees and shortened when pruning low hedges. Secondly, convenient operation and fixation are achieved thanks to the setting of the upper collar 8, the lower collar 9, and the locking screw 13. After the telescopic cylinder is adjusted to the appropriate length, it can be firmly fixed. The first telescopic rod 11 and the second telescopic rod 12 assist the movement of the upper collar 8 and the lower collar 9, making the telescopic process smooth. Moreover, users can easily replace and repair the locking screw 13, the lower collar 9, and the upper collar 8, which facilitates equipment maintenance and observation of usage, and helps to identify and solve problems in a timely manner. Thirdly, the multi-functional use is reflected in the fact that users can change the installation of the upper collar 8, the lower collar 9, and the limiting ring 10 according to actual needs. The position allows for changing the upper and lower limits of movement, providing multiple options for different pruning scenarios and operating habits; fourth, the excellent maintenance convenience is reflected in the ability to stick sponge rings and soak them with lubricating oil on the inner side of the upper collar 8 and lower collar 9. When the equipment is in use, the overflowing lubricating oil can be used for daily maintenance of the outer side of the first-stage extension cylinder 2 and the second-stage extension cylinder 3, extending the service life of the equipment and reducing the occurrence of failures. In terms of novel technology, firstly, the unique extension cylinder nesting and fixing structure is reflected in the nesting of the first-stage extension cylinder 2, the second-stage extension cylinder 3 and the third-stage extension cylinder 4, as well as the cooperation of the upper collar 8, the lower collar 9 and the locking screw 13. Compared with the traditional pruning machine telescopic structure, it not only realizes the telescopic function, but also facilitates fixing, maintenance and upkeep, and provides multiple operating modes; secondly, the flexible upper and lower limit adjustment technology means that the installation position of the upper collar 8, the lower collar 9 and the limiting ring 10 can be adjusted to change the upper and lower limits of movement, which can meet the needs of different users in different pruning scenarios and increase the flexibility of equipment use.
[0031] like Figure 1 - Figure 6 As shown, a multi-functional telescopic pruning machine has an anti-smashing structure 5 comprising a baffle plate 51, an internal extension plate 52, an outer shell 53, a pusher block 54, and a ring frame 55. The outer shell 53 is vertically fixed on both sides of the machine head 7. A rectangular hole is vertically opened on the front of the outer shell 53. A cavity is provided inside the outer shell 53. The internal extension plate 52 is vertically placed in the inner cavity of the outer shell 53. A ring frame 55 is provided at the top of the internal extension plate 52. A baffle plate 51 is provided at the top of the ring frame 55. A pusher block 54 is horizontally arranged in the middle of the front of the internal extension plate 52. The ring frame 55 consists of a rotating shaft ring and a tilting bracket.
[0032] As the pusher 54 is pushed upward, it causes the built-in extension plate 52 to move upward inside the outer shell 53. The built-in extension plate 52 and the ring frame 55 are movably connected. Therefore, when the built-in extension plate 52 moves upward, the ring frame 55 begins to retract inward due to the weight of the baffle plate 51. At this time, the angle between the baffle plate 51 and the cutting head 6 increases. However, when the outer rotating shaft ring of the ring frame 55 abuts against the outer surface of the machine head 7, the baffle plate 51 stops rotating downward and begins to move closer to the cutting head 6. When the pusher 54 is pulled downward, it causes the built-in extension plate 52 to move downward inside the outer shell 53. Due to its own weight, the baffle plate 51 begins to compress the angle of movement of the ring frame 55. At this time, the baffle plate 51 is fully opened. The user can set a limiting block on the outside of the outer shell 53 to prevent the baffle plate 51 from rotating excessively, which would render the baffle plate 51 unusable.
[0033] This has resulted in the following effects and novel technologies:
[0034] In terms of effectiveness, firstly, regarding effective anti-smashing protection, the anti-smashing structure 5 provides effective protection when the telescopic pruning machine is working. When the cutting head 6 prunes branches, the baffle plate 51 can block some branches from falling, preventing them from hitting the operator or the equipment itself. This is especially beneficial when pruning tall trees, effectively avoiding danger and improving operational safety. Secondly, regarding flexible operation and adjustment, the design of the push block 54 makes the anti-smashing structure 5 extremely flexible to operate. Its width is smaller than the width of the rectangular hole on the front of the outer shell 53, allowing the user to easily push it up and down. Pushing the push block 54 can drive a series of movements of the internal extension plate 52, the ring frame 55, and the baffle plate 51, enabling flexible adjustment of the baffle plate 51's angle. Depending on the actual pruning situation, such as pruning branches at different angles, the position can be quickly adjusted to achieve the best anti-smashing effect. Thirdly, regarding reliable structural design, the diameter of the inner rotating shaft ring of the ring frame 55 is larger than the width of the outer shell 53, and the design of the trapezoidal outer surface of the machine head 7 ensures the reliability of the anti-smashing structure 5. When the ring frame 55 drives the baffle plate 51 to flip, It can prevent excessive rotation. The shape of the machine head 7 can effectively prevent the inner rotating shaft ring of the ring frame 55 from rotating excessively, thus avoiding the barrier plate 51 from overturning and becoming unusable. A limiting block can be set on the outside of the outer shell 53 for further restriction. Multiple protections make it more stable and reliable for long-term use. In terms of novel technology, firstly, the unique linkage adjustment mechanism is novel. The linkage structure composed of push block 54, built-in extension plate 52, ring frame 55 and barrier plate 51 is novel. The push block 54 moves up and down, driving the built-in extension plate 52 to move up and down inside the outer shell 53, causing the ring frame 55 to move in both rotation and linear movement, and finally realizing the flipping of the barrier plate 51. Compared with traditional anti-smashing devices, it can more accurately control the position and angle of the barrier plate 51, and the protection is more effective. Secondly, the limitation technology based on the structural shape is novel. The relationship between the diameter of the inner rotating shaft ring of the ring frame 55, the width of the outer shell 53 and the shape of the machine head 7 is used to limit the range of motion of the anti-smashing structure 5. It can ensure normal operation and safety without complex electronic control devices. It is simple and effective.
[0035] Working Principle: When using this multi-functional telescopic pruning machine, firstly, pull the third-stage extension cylinder 4. The remaining part of the third-stage extension cylinder 4 moves inside the second-stage extension cylinder 3. Then, pull the second-stage extension cylinder 3. The remaining part of the second-stage extension cylinder 3 moves inside the first-stage extension cylinder 2. Next, the user pulls the upper collar 8 at the lower end of the limiting ring 10 and the lower collar 9 at the lower end of the upper collar 8. At the same time, the first telescopic rod 11 and the second telescopic rod 12 work together with the upper collar 8 and the lower collar 9 to extend and retract. When the upper collar 8 and the lower collar 9 move to the position of the positioning hole on the outside of the first-stage extension cylinder 2 and the second-stage extension cylinder 3, insert the locking screw 13 into the lower collar 9 and the upper collar 8 respectively. At this time, the first-stage extension cylinder 2, the second-stage extension cylinder 3, and the third-stage extension cylinder 4 are connected. The length of the extension cylinder 4 will be locked. When the cutting head 6 starts to prune the branches, the push block 54 is pulled, causing the push block 54 to move up and down. The push block 54 drives the built-in extension plate 52 inside the outer shell 53 to move up and down. The built-in extension plate 52 drives the ring frame 55 to move up and down. When the built-in extension plate 52 drives the ring frame 55 to move downward, the ring frame 55 reduces the angle of the baffle plate 51. When the built-in extension plate 52 drives the ring frame 55 to move upward, the angle between the baffle plate 51 and the machine head 7 will increase. At this time, the baffle plate 51 will be located on both sides of the cutting head 6, so as to help the branches falling during the pruning process hit the user. This is the working principle of this multi-functional telescopic pruning machine.
[0036] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.
Claims
1. A multi-functional telescoping pruner comprising: The operation machine body (1) is characterized in that the upper end of the operation machine body (1) is provided with a first extension cylinder (2), the inner side of the first extension cylinder (2) is upwardly extended and provided with a second extension cylinder (3), the inner side of the second extension cylinder (3) is upwardly extended and provided with a third extension cylinder (4), a plurality of positioning holes are formed in the outer sides of the first extension cylinder (2) and the second extension cylinder (3), a limiting ring (10) is clamped at the middle of the outer side of the third extension cylinder (4), a second telescopic rod (12) is downwardly arranged on one side of the bottom end of the limiting ring (10), an upper sleeve ring (8) is arranged at the bottom end of the second telescopic rod (12), a first telescopic rod (11) is downwardly arranged on one side of the bottom end of the upper sleeve ring (8), a lower sleeve ring (9) is arranged at the bottom end of the first telescopic rod (11), the lower sleeve ring (9) and the upper sleeve ring (8) are provided with insertion holes with the same diameter as the positioning holes on the outer surfaces of the first extension cylinder (2) and the second extension cylinder (3), and the inner sides of the insertion holes on the outer sides of the upper sleeve ring (8) and the lower sleeve ring (9) are transversely penetrated and provided with clamping screws (13). The top end of the third extension cylinder (4) is provided with a machine head (7), the top end of the machine head (7) is provided with a cutting head (6), and both sides of the machine head (7) are provided with anti-smashing structures (5).
2. The multi-functional telescopic pruner according to claim 1, wherein, The center points of the upper sleeve ring (8), the lower sleeve ring (9) and the third extension cylinder (4) are on the same straight line.
3. The multi-functional telescopic pruner according to claim 1, wherein, The inner sides of the lower sleeve ring (9) and the upper sleeve ring (8) are paved with annular wear-resistant washers.
4. The multi-functional telescopic pruner according to claim 1, wherein The third extension cylinder (4) and the limiting ring (10) are fixedly connected, and the outer shape of the machine head (7) is trapezoidal.
5. The multi-functional telescopic pruner according to claim 1, wherein The anti-smashing structure (5) comprises a blocking plate (51), an inner extension plate (52), an outer shell (53), a push block (54) and a ring frame (55), the outer shell (53) is vertically fixed on both sides of the machine head (7), a rectangular hole is vertically formed in the front of the outer shell (53), the inner side of the outer shell (53) is provided with a cavity, the inner extension plate (52) is vertically placed in the cavity of the inner side of the outer shell (53), the ring frame (55) is arranged at the top end of the inner extension plate (52), the blocking plate (51) is arranged at the top end of the ring frame (55), the push block (54) is transversely arranged at the middle of the front of the inner extension plate (52), and the ring frame (55) is composed of a rotating shaft ring and a turnover support.
6. The multi-functional telescopic pruner according to claim 5, wherein The diameter of the rotating shaft ring on the inner side of the ring frame (55) is greater than the width of the outer shell (53), and the ring frame (55) can drive the blocking plate (51) to turn over.
7. The multi-functional telescopic pruner according to claim 5, wherein The width of the push block (54) is smaller than the width of the rectangular hole formed in the front of the outer shell (53).