Landscaping nursery stock trimming device

Abstract

The utility model discloses a landscaping nursery stock trimming device which comprises a fixed tool bit, a movable tool bit, a lengthening rod, a sliding sleeve, a connecting rod, a sliding block, a pull rope, a control grab handle and a spring, and the fixed tool bit and the movable tool bit are hinged and arranged in a relatively inclined mode so that branches and leaves at high positions can be trimmed conveniently; the lengthening rod is made of aluminum alloy, is hollow and is provided with a sliding groove, the sliding sleeve slides along the sliding groove, and the sliding block is in linkage with the sliding sleeve in the lengthening rod. The pull rope penetrates through the lengthening rod, the rear end of the pull rope is connected with the pull handle, the pull handle is linked with the control grab handle, the control grab handle is slidably installed on the surface of the lengthening rod and connected with the pull rope through the connecting block, and two shearing operation modes are achieved. One end of the connecting rod is hinged to the sliding sleeve, and the other end of the connecting rod is hinged to an extension rod of the movable tool bit; the spring is arranged between the sliding sleeve and the limiting plate, so that the tool bit automatically resets after shearing is completed, and the shearing efficiency is improved.

Description

Technical Field

[0001] This utility model belongs to the field of landscape maintenance technology, specifically relating to a landscape greening seedling maintenance device. Background Technology

[0002] Pruning trees and shrubs is a common task in horticulture, agriculture, and forestry management, especially in fruit tree pruning and landscaping maintenance. The convenience and safety of pruning operations directly affect work efficiency and pruning quality. Traditional pruning tools mainly include handheld shears and electric pruning machines. Handheld shears are suitable for pruning low branches and leaves, while electric pruning machines, although more efficient, are limited by power supply and equipment weight, making them unsuitable for fine pruning of higher branches and leaves. Therefore, when pruning higher branches and leaves, ladders or long-handled pruning tools are usually required.

[0003] Existing high-branch pruning tools typically include a manual cutting device with a long pole, allowing the user to perform the cutting action by pulling a rope or control lever. However, these tools have the following problems:

[0004] 1. Inconvenient to operate: Some high-branch shears use a simple lever mechanism, which requires users to operate the shear handle in a large range of motion. Prolonged use can easily lead to hand fatigue and affect pruning efficiency.

[0005] 2. Unstable shearing control: In some devices, the closed state of the fixed and movable blades is difficult to control precisely during the shearing process, which may lead to unsatisfactory pruning results or even damage to uncut branches and leaves.

[0006] 3. Lack of automatic reset function: Most manual high-branch shears require the user to manually restore the shear head to its initial state. This requires additional operation after each cut before the next cut can be made, which affects the efficiency of continuous operation.

[0007] 4. Insufficient operational flexibility: The existing high-branch shears have a relatively simple grip method and cannot provide multiple operating methods, which makes it difficult for some users to adapt in certain pruning environments and affects the user experience. Utility Model Content

[0008] In view of the problems existing in the prior art, the purpose of this utility model is to provide a garden greening seedling trimming device, which can realize the automatic reset of the cutter head through a spring mechanism, and optimize the cutting control by combining the linkage and the sliding sleeve, thereby improving the convenience and stability of cutting. At the same time, it provides multiple operating modes to improve the pruning efficiency and applicability.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A garden greening seedling pruning device includes a fixed cutter head and a movable cutter head, which are hinged together. The fixed and movable cutter heads have blades on their adjacent sides. An extension rod is provided at the rear of the fixed cutter head, and an extension rod is provided at the rear of the movable cutter head. The fixed and movable cutter heads are inclined to one side relative to the extension rod. The extension rod is hollow inside with an open rear side. A first open groove is symmetrically formed on the surface of the extension rod near the fixed cutter head. A limiting plate is provided on the surface of the extension rod, positioned at the end of the first open groove opposite to the fixed cutter head. A sliding sleeve is fitted onto the surface of the extension rod, and a connecting plate is provided at one end of the sliding sleeve. A connecting rod is hinged to the surface of the connecting plate, and the end of the connecting rod opposite to the sliding sleeve is hinged to the end of the extension rod.

[0011] Furthermore, a baffle is provided at one end of the sliding sleeve away from the connecting rod, and a spring is sleeved on the surface of the extension rod, with the spring positioned between the limiting plate and the baffle.

[0012] Furthermore, a slider is slidably installed inside the extension rod, the slider and the sliding sleeve are positioned corresponding to each other, bolts are symmetrically inserted through the surface of the sliding sleeve, and the ends of the bolts are screwed onto the slider, and the two bolts respectively penetrate the first open sliding groove.

[0013] Furthermore, a pull rope is connected to the rear end of the slider, the pull rope passes through the extension rod, and a handle is connected to the end of the pull rope, the handle being located on the outer side of the rear end of the extension rod.

[0014] Furthermore, a second open groove is symmetrically provided on the rear side of the extension rod surface, a connecting block is provided on the surface of the pull rope, the connecting block corresponds to the second open groove, and a control handle is slidably installed on the surface of the extension rod, the control handle is fixed to the connecting block by bolts.

[0015] Furthermore, the rear end of the extension rod is fitted with an anti-slip rubber sleeve.

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

[0017] This utility model provides a garden greening seedling pruning device. By optimizing the structural design, it improves the convenience, stability and applicability of pruning operations. At the same time, it improves the existing high branch pruning tools to make pruning work more efficient and safer.

[0018] This invention utilizes an extended pole design, allowing users to trim high branches and leaves without climbing or using ladders, thus improving operational safety. The extended pole is made of aluminum alloy, ensuring overall strength while effectively reducing the machine's weight, preventing excessive weight from affecting the user experience during extended operation. The extended pole's tilt angle is set at 20-30°, allowing users to clearly observe the trimming process from the ground, improving trimming accuracy and preventing accidental or incomplete trimming.

[0019] This invention utilizes the cooperation between a sliding sleeve and a connecting rod to achieve smooth control of the shearing mechanism. The sliding sleeve and the extension rod are connected by a groove and a limiting plate, allowing the sliding sleeve to slide smoothly within a certain range, avoiding shearing failures or insufficient force due to poor sliding during operation. One end of the connecting rod is hinged to the sliding sleeve, and the other end is hinged to the extension rod of the movable cutter head, ensuring efficient and reliable force transmission during shearing, making the shearing operation smoother and reducing shearing failures caused by mechanism jamming.

[0020] A spring return mechanism is added to the shearing mechanism, allowing the fixed and movable blades to automatically return to their original positions after shearing, reducing manual reset operations and improving trimming efficiency. The spring is made of high-strength spring steel, with a pre-compression setting of 20-30N to ensure moderate elasticity. This allows the blades to quickly return to their initial state after shearing, facilitating the next cut and improving operational continuity.

[0021] The slider and sleeve are connected by bolts and slide along a groove inside the extension rod, ensuring smooth operation of the entire pulling mechanism. The slider is made of polyoxymethylene (POM) material, which improves wear resistance and reduces frictional resistance, ensuring that the shearing operation will not be affected by slider jamming when the pull rope is pulled. At the same time, the pull rope is made of high-strength polyester material with a diameter of 2mm, ensuring that it will not break due to excessive tension during long-term use, improving the durability and safety of the device.

[0022] This invention provides two cutting operation methods: operation via a pull handle or a control handle, to adapt to different user habits and the needs of different trimming environments. The pull handle is located at the rear end of the extension rod, allowing the user to easily hold the extension rod with one hand and pull to cut. The control handle is fixed to the extension rod via a sliding connecting block, allowing the user to pull the cord to cut by controlling the handle, enhancing operational flexibility and enabling the device to be used efficiently in various trimming environments.

[0023] The extended rod features a non-slip rubber sleeve at the rear. Made of highly elastic silicone with a corrugated texture, this sleeve increases grip friction, reduces accidental operation due to slippage, and improves safety. The non-slip sleeve ensures stable grip during extended operation, enhancing both comfort and safety during shearing work. Attached Figure Description

[0024] Figure 1 This is a front view structural diagram of the present utility model;

[0025] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the movable cutter head and pull rope structure of this utility model;

[0027] Figure 4 For the present utility model Figure 2 A magnified structural diagram of area A.

[0028] The attached diagram lists the components represented by each number as follows:

[0029] 1. Fixed cutter head; 11. Extension rod; 12. Anti-slip rubber sleeve; 13. First open slide groove; 14. Limiting plate; 15. Second open slide groove; 2. Movable cutter head; 21. Extension rod; 3. Slide sleeve; 31. Baffle; 32. Connecting plate; 4. Connecting rod; 5. Sliding block; 6. Pull rope; 61. Pull handle; 62. Connecting block; 7. Control handle; 8. Spring. Detailed Implementation

[0030] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0031] refer to Figures 1-4 As shown, a garden greening seedling pruning device includes a fixed cutter head 1 and a movable cutter head 2, which are hinged together. The sides of the fixed cutter head 1 and the movable cutter head 2 that are close to each other have sharp blades made of high-carbon steel to improve wear resistance and shearing force. An extension rod 11 is welded to the rear of the fixed cutter head 1. The extension rod 11 is made of aluminum alloy to reduce overall weight and enhance corrosion resistance. An extension rod 21 is provided at the rear of the movable cutter head 2 and is fixedly connected to the movable cutter head 2. The extension rod 21 is made of stainless steel to ensure strength. The fixed cutter head 1 and the movable cutter head 2 are tilted to one side relative to the extension rod 11 at an angle of 20-30° to improve visibility and ease of operation when pruning high branches and leaves.

[0032] The extension rod 11 is hollow inside with an open rear side. A first open groove 13 is symmetrically provided on the surface of the extension rod 11 near the fixed cutter head 1. The length of the first open groove 13 is set to 50-80mm according to the opening angle of the shearing cutter head to ensure smooth operation of the sliding structure. A limit plate 14 is provided on the surface of the extension rod 11. The limit plate 14 is fixed to the outer surface of the extension rod 11 by bolts. The limit plate 14 is made of hard plastic to reduce frictional resistance during sliding and improve the overall service life. The limit plate 14 is placed at the end of the first open groove 13 away from the fixed cutter head 1 to limit the sliding range of the sliding sleeve 3 and prevent the sliding sleeve 3 from moving excessively and affecting the reset operation of the shearing mechanism.

[0033] The extension rod 11 is fitted with a sliding sleeve 3. A connecting plate 32 is provided on one end of the sliding sleeve 3. The connecting plate 32 adopts an integral molding structure to improve the overall strength. A connecting rod 4 is hinged to the surface of the connecting plate 32. The end of the connecting rod 4 away from the sliding sleeve 3 is hinged to the end of the extension rod 21. The connecting rod 4 is made of stainless steel with a diameter of 5mm to ensure that shear force can be smoothly transmitted when the sliding sleeve 3 is pulled, and to avoid deformation or breakage.

[0034] refer to Figure 2 and Figure 4 As shown, a baffle 31 is provided at the end of the sliding sleeve 3 away from the connecting rod 4. The baffle 31 is fixed to the sliding sleeve 3 by welding. The baffle 31 is made of stainless steel plate with a thickness of 2mm to enhance impact resistance and ensure structural stability during shearing. A spring 8 is sleeved on the surface of the extension rod 11. The spring 8 is made of high-strength spring steel and is placed between the limiting plate 14 and the baffle 31. The pre-compression of the spring 8 is set to 20-30N to ensure that it can quickly reset after shearing, improve shearing efficiency and reduce the trouble of manual reset operation.

[0035] refer to Figures 2-4 As shown, a slider 5 is slidably installed inside the extension rod 11. The slider 5 and the sliding sleeve 3 are positioned corresponding to each other. The slider 5 is made of polyoxymethylene (POM) material to improve wear resistance and reduce sliding friction resistance, thereby improving the overall service life. Bolts are symmetrically inserted through the surface of the sliding sleeve 3. The bolts are M4 stainless steel bolts to ensure the connection is firm and corrosion-resistant. The ends of the bolts are screwed onto the slider 5. The two bolts respectively pass through the first open sliding groove 13 to ensure that the slider 5 slides stably along the direction of the sliding groove inside the extension rod 11, while avoiding the slider 5 from shifting and affecting the shearing effect.

[0036] refer to Figure 3As shown, a pull rope 6 is connected to the rear end of the slider 5. The pull rope 6 passes through the extension rod 11. The pull rope 6 is made of high-strength polyester material with a diameter of 2mm to ensure that it will not break due to excessive pulling force during long-term use. A handle 61 is connected to the end of the pull rope 6. The handle 61 is made of ABS engineering plastic to provide a comfortable grip and reduce hand fatigue caused by long-term use. The handle 61 is located on the outer side of the rear end of the extension rod 11 so that the user can pull the handle 61 from different positions to complete the cutting operation.

[0037] refer to Figures 1-3 As shown, the extension rod 11 has a second open groove 15 symmetrically opened on the rear side of its surface. The width of the second open groove 15 is set to 5mm to ensure that the connecting block 62 can slide smoothly and avoid jamming that affects the cutting operation. The pull rope 6 has a connecting block 62 on its surface. The connecting block 62 is made of high-strength nylon material to reduce the overall weight and improve the sliding flexibility. The connecting block 62 corresponds to the second open groove 15. A control handle 7 is slidably installed on the surface of the extension rod 11. The control handle 7 is fixed to the connecting block 62 by bolts. The control handle 7 is made of ergonomically designed rubber material shell to improve grip comfort, reduce hand fatigue caused by long-term use, and improve the convenience of trimming.

[0038] refer to Figure 1 As shown, the extension rod 11 is fitted with an anti-slip rubber sleeve 12 at its rear end. The anti-slip rubber sleeve 12 is made of high-elasticity silicone material and has a corrugated anti-slip texture on its outer surface to enhance the friction when the user holds it, prevent slippage and operational errors, and improve safety and stability.

[0039] The working principle of this utility model is as follows: Due to the presence of spring 8, the sliding sleeve 3 always has a forward force, which in turn pushes the end of the extension rod 21 upward through the connecting rod 4, thereby opening the fixed cutter head 1 and the movable cutter head 2. This is the normal state. At this time, since the sliding sleeve 3 is at the frontmost position, pulling the pull rope 6 makes both the pull handle 61 and the control handle 7 at the frontmost position of the stroke. The pull rope 6 is taut. When using, hold the anti-slip rubber sleeve 12 area at the end of the extension rod 11. The anti-slip rubber sleeve 12 can effectively increase the friction with the user's palm, achieving the purpose of anti-slip. Then adjust its position so that the branches and leaves to be pruned are placed on the fixed cutter head 1 and the movable cutter head 2. Between the movable blades 2, since the fixed blade 1 and the movable blade 2 have a certain tilt angle relative to the extension rod 11, it is convenient for the user to observe the pruning situation under the tree. After the position adjustment is completed, hold the control handle 7 and pull the control handle 7 backward. At this time, the backward movement of the control handle 7 can pull the pull rope 6 backward through the connecting block 62. The pull rope 6 can pull the sliding sleeve 3 backward, so that through the cooperation of the sliding sleeve 3 and the connecting rod 4, the end of the extension rod 21 is pulled closer to the extension rod 11, thereby enabling the fixed blade 1 and the movable blade 2 to prune the branches and leaves, thereby realizing the pruning work of high branches and leaves and improving the convenience of pruning.

[0040] When the control handle 7 is pulled, the spring 8 can be compressed and stored. Therefore, after a single cut is completed, the fixed cutter head 1 and the movable cutter head 2 automatically open to facilitate the next cut. Cutting can also be achieved by pulling the handle 61 at the tail, providing multiple operating methods.

[0041] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A pruning device for landscaping seedlings, comprising a fixed blade (1) and a movable blade (2), characterized in that: The fixed cutter head (1) and the movable cutter head (2) are hinged together, and the fixed cutter head (1) and the movable cutter head (2) have blades on their respective sides. An extension rod (11) is provided on the rear side of the fixed cutter head (1), and an extension rod (21) is provided on the rear side of the movable cutter head (2). The fixed cutter head (1) and the movable cutter head (2) are inclined to one side relative to the extension rod (11). The extension rod (11) is hollow inside and open at the rear. The surface of the extension rod (11) is close to the fixed cutter head (1). A first open groove (13) is symmetrically opened on one side of the extension rod (11). A limiting plate (14) is provided on the surface of the extension rod (11). The limiting plate (14) is placed at the end of the first open groove (13) away from the fixed cutter head (1). A sliding sleeve (3) is sleeved on the surface of the extension rod (11). A connecting plate (32) is provided on the surface of one end of the sliding sleeve (3). A connecting rod (4) is hinged on the surface of the connecting plate (32). The end of the connecting rod (4) away from the sliding sleeve (3) is hinged to the end of the extension rod (21).

2. The garden greening seedling trimming device according to claim 1, characterized in that: The sliding sleeve (3) is provided with a baffle (31) at one end away from the connecting rod (4), and a spring (8) is sleeved on the surface of the extension rod (11). The spring (8) is placed between the limiting plate (14) and the baffle (31).

3. The garden greening seedling trimming device according to claim 2, characterized in that: The extension rod (11) has a slider (5) slidably installed inside. The slider (5) and the sliding sleeve (3) are positioned corresponding to each other. Bolts are symmetrically inserted through the surface of the sliding sleeve (3), and the ends of the bolts are screwed onto the slider (5). The two bolts respectively penetrate the first open groove (13).

4. The garden greening seedling trimming device according to claim 3, characterized in that: The slider (5) is connected to a pull rope (6) at its rear end. The pull rope (6) passes through the extension rod (11). The end of the pull rope (6) is connected to a handle (61). The handle (61) is located outside the rear end of the extension rod (11).

5. A garden greening seedling trimming device according to claim 4, characterized in that: The extension rod (11) has a second open groove (15) symmetrically opened on the rear side of its surface. The pull rope (6) has a connecting block (62) on its surface, which corresponds to the second open groove (15). A control handle (7) is slidably installed on the surface of the extension rod (11), and the control handle (7) is fixed to the connecting block (62) by bolts.

6. The garden greening seedling trimming device according to claim 1, characterized in that: The extension rod (11) is fitted with an anti-slip rubber sleeve (12) at its rear end.

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