A telescopic saw for pruning trees

Abstract

This utility model discloses a telescopic saw for forest pruning, including a connecting seat. The bottom of the connecting seat has an installation groove, and a hydraulic cylinder is installed within the installation groove. A telescopic saw mechanism is connected to the bottom of the hydraulic cylinder. A connecting sleeve is provided at the top of the connecting seat. Through channels are distributed on both sides of the connecting seat. A connecting column is connected above the connecting sleeve and installed below a fixed plate. A movable hole is provided on the fixed plate, and a pull rod is movably inserted into the movable hole. This utility model has a scientifically and rationally designed structure, allowing for quick docking and assembly of the connecting sleeve and the connecting column. Under the elastic force of a spring, a locking block automatically engages with the slot, achieving a fixed connection. By using a support sleeve, a support rod, and a locking screw, the relative distance between the support rod and the support sleeve can be adjusted and fixed to meet different application needs.

Description

Technical Field

[0001] This utility model relates to the field of telescopic saw technology, and in particular to a telescopic saw for pruning trees. Background Technology

[0002] In forest pruning, trimming branches at different heights is an important part of daily work. However, existing pruning tools have many problems that urgently need to be solved in practical use. Traditional forest pruning tools, such as ordinary hand saws, are not only limited in function, but also require workers to use ladders and other auxiliary tools to climb when dealing with high branches, resulting in high labor intensity and safety risks. Moreover, their overall structure is mostly fixed, and once a part is damaged, disassembly and repair are extremely cumbersome, often requiring professional personnel with multiple tools to complete the task. This not only delays the work progress but also increases maintenance costs.

[0003] While some handheld chainsaws offer improved cutting efficiency, they suffer from significant shortcomings in length adjustment. Their lengths are mostly fixed, unable to be flexibly adjusted according to branch height. When encountering tall or short branches, workers either have to risk climbing or simply cannot reach them, resulting in poor applicability. Furthermore, the saw blade is tightly connected to the main structure, making disassembly and maintenance inconvenient. If the saw blade wears out or is damaged, replacement is time-consuming and labor-intensive, severely impacting work efficiency. Therefore, we propose a telescopic saw for forest pruning. Summary of the Invention

[0004] To address the aforementioned problems, this utility model provides a telescopic saw for forest pruning. This utility model solves the problems mentioned in the background section.

[0005] This utility model provides the following technical solution: a telescopic saw for pruning trees, including a connecting seat, an installation groove at the bottom of the connecting seat, a hydraulic cylinder in the installation groove, a telescopic saw mechanism connected to the bottom of the hydraulic cylinder, a connecting sleeve at the top of the connecting seat, through channels distributed on both sides of the connecting seat, a connecting column connected above the connecting sleeve, the connecting column installed below a fixed plate, a movable hole in the fixed plate, a pull rod movably inserted into the movable hole, a locking block at the bottom of the pull rod, a knob at the top of the pull rod, a spring sleeved on the pull rod, a locking block in the installation groove, a locking groove at the top of the locking block, the locking block rotating outward after passing through the channel to form a concave-convex locking engagement with the locking block, a support sleeve in the middle of the fixed plate, a support rod inserted into the support sleeve, and a locking screw screw screwed to the side wall of the support sleeve.

[0006] In the above solution, the pull rod, knob, and locking block are integrally formed connecting parts.

[0007] In the above scheme, the two ends of the spring are connected to the knob and the upper surface of the fixing plate, respectively.

[0008] In the above solution, a handle is connected to the top of the support rod, and the handle is provided with anti-slip texture.

[0009] In the above scheme, a drive box is provided on the support rod, and a control switch is provided on the drive box.

[0010] In the above scheme, the support sleeve is fixedly connected to the fixing plate by bolts.

[0011] In the above scheme, the support sleeve and support rod are stainless steel structural components.

[0012] The advantages and beneficial effects of this utility model are as follows: This utility model provides a telescopic saw for forest pruning. By setting a connecting mechanism with a pull rod, knob, spring, locking block, and locking block, the connecting sleeve and connecting column can be quickly connected and combined. The user manually presses the knob to move the locking block down from the inside of the channel, then rotates it outward and gradually releases the knob. Under the elastic force of the spring, the locking block automatically engages in the slot, achieving a connection and fixing effect. The hydraulic cylinder can drive the telescopic saw mechanism to move from the mounting slot, quickly extending and retracting the telescopic saw. It is easy to operate and can quickly achieve relevant protection for the telescopic saw mechanism. By setting a support sleeve, support rod, and locking screw, the relative distance between the support rod and the support sleeve can be adjusted and fixed to meet different application needs. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a schematic diagram of the separation structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure of this utility model;

[0016] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0017] In the diagram: 1. Connecting seat; 11. Mounting groove; 12. Hydraulic cylinder; 13. Telescopic saw mechanism; 14. Connecting sleeve; 15. Channel; 16. Fixing plate; 17. Connecting column; 18. Pull rod; 19. Knob; 2. Spring; 21. Locking block; 22. Locking block; 23. Locking groove; 24. Support sleeve; 25. Support rod; 26. Handle; 27. Locking screw. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0019] like Figure 1-3 As shown, this utility model is a telescopic saw for forest pruning, including a connecting seat 1. The bottom of the connecting seat 1 has an installation groove 11, and a hydraulic cylinder 12 is installed within the installation groove 11. A telescopic saw mechanism 13 is connected to the bottom of the hydraulic cylinder 12. A connecting sleeve 14 is provided at the top of the connecting seat 1. Through channels 15 are distributed on both sides of the connecting seat 1. A connecting post 17 is connected above the connecting sleeve 14. The connecting post 17 is installed below a fixed plate 16. A movable hole is provided on the fixed plate 16, and a [missing information - likely a component or part] is movably inserted into the movable hole. A pull rod 18 has a locking block 21 at its bottom and a knob 19 at its top. A spring 2 is fitted onto the pull rod 18. A locking block 22 is provided in the mounting groove 11. A locking groove 23 is provided on the top of the locking block 21. The locking block 21 passes through the channel 15 and rotates 90 degrees outward to form a convex-concave engagement with the locking block 22. A support sleeve 24 is provided in the middle of the fixing plate 16. A support rod 25 is inserted into the support sleeve 24. A locking screw 27 is screwed to the side wall of the support sleeve 24.

[0020] By setting up a hydraulic cylinder 12, the telescopic saw mechanism 13 can be moved from the mounting slot 11, achieving the effect of quickly extending and retracting the telescopic saw. When not in use, the telescopic saw mechanism 13 can be stored in the mounting slot 11 for protection, preventing damage to the saw blade; when it is necessary to prune branches, it can be quickly extended for operation, making it convenient to use.

[0021] By incorporating a connecting mechanism consisting of a pull rod 18, a knob 19, a spring 2, a locking block 21, and a locking block 22, the connecting sleeve 14 and the connecting post 17 can be quickly connected and assembled. The user manually presses the knob 19 to move the locking block 21 downwards from inside the channel 15, then rotates it outwards and gradually releases the knob 19. Under the elastic force of the spring 2, the locking block 22 automatically engages in the slot 23, achieving a secure connection. This method is convenient, quick, easy to install and disassemble, and improves work efficiency.

[0022] By configuring the support sleeve 24, support rod 25, and locking screw 27, the relative distance between the support rod 25 and the support sleeve 24 can be adjusted and fixed. When it is necessary to prune branches of different heights, the length of the support rod 25 extending out of the support sleeve 24 can be adjusted to meet different application needs, thus enhancing the applicability of the tool.

[0023] In the above design, the pull rod 18, knob 19, and locking block 21 are integrally formed connectors. This integral design makes the structure more stable and ensures that the pull rod 18, knob 19, and locking block 21 move synchronously during operation, avoiding operational difficulties due to loose connections and improving the reliability and service life of the connection mechanism.

[0024] In the above scheme, the two ends of the spring 2 are connected to the knob 19 and the upper surface of the fixing plate 16, respectively. This connection method ensures that when the knob 19 is pressed to move the locking block 21 downward, the spring 2 is in a compressed state to store elastic potential energy; when the knob 19 is released, the spring 2 can use the stored elastic potential energy to push the knob 19 and the locking block 21 connected to it upward, so as to realize the automatic engagement of the locking block 22 and the locking groove 23, and ensure the normal operation of the connection mechanism.

[0025] In the above design, a handle 26 is connected to the top of the support rod 25, and the handle 26 is provided with anti-slip texture. The handle 26 makes it easier for the operator to grip and apply force during operation; the anti-slip texture on the handle 26 increases the friction between the hand and the handle 26, preventing the tool from slipping due to sweaty hands or uneven force during operation, thus improving operational safety.

[0026] In the above scheme, a drive box is installed on the support rod 25, and a control switch is installed on the drive box. The drive box is used to install control circuits and other related components. The control switch allows the operator to directly control the relevant functions of the telescopic saw (such as starting or stopping the hydraulic cylinder 12) while holding the handle 26, without having to find an additional control device, thus improving the convenience of operation.

[0027] In the above scheme, the support sleeve 24 is fixedly connected to the fixing plate 16 by bolts. This connection method is simple and reliable, and is easy to install and disassemble. When it is necessary to perform maintenance or replacement of the support sleeve 24 or the fixing plate 16, it can be easily achieved by removing the bolts, which reduces maintenance costs and difficulty.

[0028] In the above design, the support sleeve 24 and support rod 25 are stainless steel structural components. Stainless steel is corrosion-resistant and has high strength. Using stainless steel to make the support sleeve 24 and support rod 25 can extend their service life and ensure stable operation in various complex outdoor environments, thus guaranteeing the reliability and stability of the telescopic saw's height adjustment mechanism.

[0029] Working principle:

[0030] During assembly, this type of telescopic saw for pruning trees involves aligning the connecting post 17 with the upper position of the connecting sleeve 14, and then manually pressing the knob 19. At this time, the pull rod 18, integrally formed with the knob 19, moves the locking block 21 downwards, allowing it to move down through the movable hole in the fixing plate 16 and the channels 15 on both sides of the connecting seat 1. Once the locking block 21 has reached the appropriate position, rotate it outwards by 90 degrees. Then, release the knob 19. Because the two ends of the spring 2 are connected to the knob 19 and the upper surface of the fixing plate 16 respectively, the locking block 21 moves upwards under the elastic force of the spring 2 until the locking block 22 in the mounting groove 11 engages with the locking groove 23 at the top of the locking block 21, thus achieving a stable connection between the connecting post 17 and the connecting sleeve 14. During disassembly, press the knob 19 again to disengage the locking block 22 from the locking groove 23, then rotate the locking block 21 inwards by 90 degrees and move it back to its initial position to separate the connecting post 17 from the connecting sleeve 14.

[0031] When the telescopic saw mechanism 13 is needed for tree pruning, the hydraulic cylinder 12 in the mounting slot 11 is activated. The thrust generated by the hydraulic cylinder 12 drives the telescopic saw mechanism 13 to extend downward from the mounting slot 11. Once it reaches the appropriate position, the branches can be sawed. After pruning is completed, the hydraulic cylinder 12 generates a pulling force to retract the telescopic saw mechanism 13 back into the mounting slot 11, completing the operation and providing protection for the telescopic saw mechanism 13.

[0032] When the height of the telescopic saw needs to be adjusted to accommodate the pruning needs of branches at different heights, loosen the locking screw 27 screwed to the side wall of the support sleeve 24, and then pull the support rod 25 up or down as needed to allow it to slide inside the support sleeve 24. After adjusting to the appropriate height, tighten the locking screw 27 to make it press against the support rod 25, thereby fixing the relative position of the support rod 25 and the support sleeve 24 and realizing the adjustment of the overall height of the telescopic saw.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. 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.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A telescopic saw for pruning trees, comprising a connecting seat (1), characterized in that: The bottom of the connecting seat (1) is provided with an installation groove (11), and a hydraulic cylinder (12) is provided in the installation groove (11). The bottom of the hydraulic cylinder (12) is connected to a telescopic saw mechanism (13). The top of the connecting seat (1) is provided with a connecting sleeve (14). Through channels (15) are distributed on both sides of the connecting seat (1). A connecting column (17) is connected above the connecting sleeve (14). The connecting column (17) is installed below the fixing plate (16). The fixing plate (16) is provided with a movable hole. A pull rod (18) is movably inserted into the movable hole. The bottom of the pull rod (18) A locking block (21) is provided, a knob (19) is provided on the top of the pull rod (18), a spring (2) is sleeved on the pull rod (18), a locking block (22) is provided in the mounting groove (11), a locking groove (23) is provided on the top of the locking block (21), the locking block (21) passes through the channel (15) and rotates 90 degrees outward to form a concave-convex locking fit with the locking block (22), a support sleeve (24) is provided in the middle of the fixing plate (16), a support rod (25) is inserted into the support sleeve (24), and a locking screw (27) is screwed to the side wall of the support sleeve (24).

2. The telescopic saw for pruning trees according to claim 1, characterized in that, The pull rod (18), knob (19) and locking block (21) are integrally formed connecting parts.

3. A telescopic saw for pruning trees according to claim 1, characterized in that, The two ends of the spring (2) are connected to the knob (19) and the upper surface of the fixing plate (16), respectively.

4. A telescopic saw for pruning trees according to claim 1, characterized in that, The top of the support rod (25) is connected to a handle (26), and the handle (26) is provided with anti-slip texture.

5. A telescopic saw for pruning trees according to claim 1, characterized in that, A drive box is provided on the support rod (25), and a control switch is provided on the drive box.

6. A telescopic saw for pruning trees according to claim 1, characterized in that, The support sleeve (24) is fixedly connected to the fixing plate (16) by bolts.

7. A telescopic saw for pruning trees according to claim 1, characterized in that, The support sleeve (24) and support rod (25) are stainless steel structural components.

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