Tree crown pruning device
By setting a fixed shaft and a rotating sleeve on the blade tip of the crown pruning device, the safety hazards of existing garden scissors during use and transportation are solved, and effective protection and safety improvement of the blade tip is achieved.
Patent Information
- Application Number
- CN202421818744.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-07-30
AI Technical Summary
During the use and transportation of existing garden scissors, the tips are prone to puncture staff or other items, which poses a major safety hazard.
A tree crown pruning device is designed. By setting a fixed shaft and a rotating sleeve at the tip of the blade, the two sets of rotating sleeves and the fixed shaft are used to protect the blade tip when it is idle and prevent accidental injury.
It effectively improves the safety of the device during use, prevents the blade tip from accidentally injuring staff and other items, and also extends the service life of the rotating sleeve.
Smart Images
Figure CN222897694U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of tree crown pruning tools, in particular to a tree crown pruning device. Background Art
[0002] When transplanting trees, it is often necessary to cut off the tree crown or remove a part of the branches and leaves. The purpose is to reduce transpiration and increase the survival rate. After cutting off the tree crown, the growth height of the tree can be controlled. For example, street trees are more beautiful and tidy in this way. And in the process of pruning the tree crown, garden scissors are needed.
[0003] At present, when the existing garden scissors are in use, the overall structure is relatively simple. Since the tip of the scissors is relatively sharp, when the scissors are being transported, its tip is likely to stab the staff or other objects, so there are relatively large safety hazards and it is more limited in use. For this reason, we propose a tree crown pruning device to solve the above problems. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the defects existing in the prior art and propose a tree crown pruning device.
[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0006] A tree crown pruning device includes a grip. There are two groups of the grips in total. And blades are distributed and connected to the upper sides of the two groups of grips. The two blades are connected by a shear shaft. Fixing shafts are respectively inserted into the tops of the blades. And a connecting disk is connected to the front of the fixing shaft. A rotating sleeve is movably sleeved on the outer side of the fixing shaft. And an arc-shaped plate is connected to the front of the rotating sleeve. A limiting rod is inserted into the arc-shaped plate. And one end of the limiting rod is connected to a pulling strip. The other end of the pulling strip extends into the connecting disk. And two card slots adapted to the limiting rod are opened in the connecting disk.
[0007] In this device, by providing the fixing shaft and the rotating sleeve, when it is not in use, through the mutual cooperation of the two rotating sleeves and the fixing shaft, the protection of the tip of the blade can be realized, thereby effectively preventing the tip of the blade from accidentally injuring the staff and other objects, and effectively improving the safety during the use of this device.
[0008] Preferably, connecting springs are symmetrically connected to the inner side of the pulling strip. And the other ends of the connecting springs are all connected to the arc-shaped plate.
[0009] Preferably, connecting rods are symmetrically inserted into the arc-shaped plate. And the ends of the connecting rods are fixedly connected to the pulling strip.
[0010] Preferably, mounting plates are symmetrically connected to the sides of the arc-shaped plate, and the inside of the mounting plate is connected to a rotating sleeve through bolts.
[0011] Preferably, a protective pad is glued to the front end of the rotating sleeve, and the edge of the protective pad is arranged in an arc structure.
[0012] Preferably, a magnetic strip is connected to the side of the rotating sleeve, and the magnetic strips are symmetrically distributed on one side where two groups of rotating sleeves are close to each other.
[0013] Preferably, a protective sleeve is sleeved on the bottom end of the handle, and anti-slip lines are evenly arranged on the outer surface of the protective sleeve.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. By providing a fixed shaft and a rotating sleeve, when the device is not in use, the tip of the blade can be protected through the mutual cooperation of the two groups of rotating sleeves and the fixed shaft, thereby effectively preventing the tip of the blade from accidentally injuring the staff and other objects, and effectively improving the safety during the use of the device.
[0016] 2. By providing a protective sleeve and a magnetic strip, during the use process, the protective sleeve glued to the front end of the rotating sleeve can protect the rotating sleeve to ensure its service life. With the connection of the magnetic strip, the tightness when two groups of rotating sleeves are fitted can be effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a three-dimensional structural schematic diagram of a tree crown pruning device proposed by the present utility model;
[0018] Figure 2 is Figure 1 the three-dimensional structural schematic diagram of the rotating sleeve and the protective pad structure in
[0019] Figure 3 is Figure 1 the three-dimensional structural schematic diagram of the fixed shaft and the rotating sleeve structure in
[0020] Figure 4 is the Figure 3 enlarged schematic diagram of the structure at A in
[0021] In the figure: 1. Handle; 2. Blade; 3. Fixed shaft; 4. Connection disk; 5. Rotating sleeve; 6. Arc-shaped plate; 7. Limiting rod; 8. Pulling bar; 9. Connection spring; 10. Connecting rod; 11. Mounting plate; 12. Protective pad; 13. Magnetic strip; 14. Protective sleeve; 15. Shearing shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0023] Referring to Figures 1-4 , a tree crown pruning device includes a grip 1. There are two groups of grips 1 in total, and blades 2 are distributively connected to the upper sides of the two groups of grips 1. The two blades 2 are connected by a shear shaft 15. The connection method and working principle of the grip 1, the blade 2, and the shear shaft 15 are prior arts and will not be elaborated here. Fixing shafts 3 are respectively inserted at the tops of the blades 2, and a connection disk 4 is connected to the front of the fixing shaft 3. The fixing shaft 3 is fixedly inserted at the top position of the blade 2. A rotating sleeve 5 is movably sleeved outside the fixing shaft 3, and an arc-shaped plate 6 is connected to the front of the rotating sleeve 5. A limiting rod 7 is inserted into the arc-shaped plate 6, and a pulling bar 8 is connected to one end of the limiting rod 7. The other end of the pulling bar 8 extends into the connection disk 4, and two card slots adapted to the limiting rod 7 are opened inside the connection disk 4. Through the opening of the two card slots, it is convenient to limit the rotating sleeve 5 that has been rotated to the vertical or horizontal state.
[0024] Further, referring to Figure 4 it can be known that connecting springs 9 are symmetrically connected to the inner side of the pulling bar 8, and the other ends of the connecting springs 9 are all connected to the arc-shaped plate 6. Through the elastic characteristics of the connecting springs 9 themselves, the tightness when the limiting rod 7 is engaged in the card slots inside the connection disk 4 can be ensured.
[0025] Further, referring to Figure 4 it can be known that connecting rods 10 are symmetrically inserted into the arc-shaped plate 6, and the ends of the connecting rods 10 are fixedly connected to the pulling bar 8. Through the arrangement of the connecting rods 10, the limiting rod 7 can be guided during the pulling process of the pulling bar 8, thereby effectively ensuring the stability of the limiting rod 7 during the moving process.
[0026] Further, referring to Figure 3 and Figure 4 it can be known that mounting plates 11 are symmetrically connected to the sides of the arc-shaped plate 6, and the mounting plates 11 are connected to the rotating sleeve 5 through bolts. Through the mutual cooperation of the mounting plates 11 and the bolts, it is convenient for the staff to disassemble and replace the faulty limiting rod 7 and the arc-shaped plate 6.
[0027] Further, referring to Figure 2 and Figure 3 it can be known that a protective pad 12 is glued to the front end of the rotating sleeve 5, and the edge of the protective pad 12 is set as an arc-shaped structure. Through the protective pad 12 with the arc-shaped structure, the protection operation of the top position of the rotating sleeve 5 can be realized, thereby effectively ensuring the service life of the rotating sleeve 5.
[0028] Further, referring to Figure 3 it can be known that a magnet bar 13 is connected to the side of the rotating sleeve 5, and the magnet bars 13 are symmetrically distributed on the side where the two rotating sleeves 5 are close to each other. The magnet bars 13 connected to the inner sides of the two rotating sleeves 5 have opposite magnetic polarities. Therefore, when the two rotating sleeves 5 approach each other, through the magnet bars 13 with opposite magnetic polarities, the tightness during the fitting process of the rotating sleeve 5 can be ensured, so as to improve the protection effect on the front end of the blade 2.
[0029] Further, referring to Figure 1 and Figure 2 it can be known that a protective sleeve 14 is sleeved on the bottom end of the handle 1, and anti-slip patterns are evenly arranged on the outer surface of the protective sleeve 14. During the process of the staff holding the handle 1 to trim the tree crown, through the settings of the protective sleeve 14 and the anti-slip patterns, the tightness of the staff holding the handle 1 can be improved, which can effectively prevent the staff from slipping during use, thereby effectively improving the reliability during the use of the device.
[0030] Working principle: When the present utility model is in use, when it is necessary to trim the tree crown, the staff can successively pull the pull bar 8, so that the limiting rod 7 connected to the inner side thereof is stressed and moves, so that the limiting rod 7 is withdrawn from the inside of the connecting disc 4, thereby releasing the limitation on the connecting disc 4. Then the staff can pull the rotating sleeve 5 to rotate, and it slides along the outer surface of the fixed shaft 3 under force. When the rotating sleeve 5 is rotated by 90 degrees, the limiting rod 7 corresponds to another set of card slots opened inside the connecting disc 4, thereby realizing the re-limitation of the rotating sleeve 5. When the two rotating sleeves 5 are respectively rotated by 90 degrees, the tip of the blade 2 is exposed. At this time, the staff can hold the two protective sleeves 14 by hand and complete the trimming of the tree crown through the opening and closing of the two blades 2. After the trimming is completed, the staff can pull the pull bar 8 again, and then the rotating sleeve 5 can be rotated into a vertical state to protect the tip of the blade 2. The above is the entire working principle of the present utility model.
[0031] In the present utility model, the installation methods, connection methods or setting methods of all the above-mentioned components are common mechanical methods, and the specific structures, models and coefficient indexes of all its components are its own technologies. As long as the beneficial effects can be achieved, they can be implemented, so no more details will be described.
[0032] The above embodiments are the preferred embodiments of the present utility model, but the embodiments of the present utility model are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principle of the present utility model shall be equivalent replacement methods and are all included in the protection scope of the present utility model.
[0033] In the present utility model, unless otherwise stated, directional terms such as "up and down, left and right, front and back, inside and outside, vertical and horizontal" included in the terms only represent the directions of the terms in the normal use state, or are commonly known to those skilled in the art, and should not be regarded as a limitation to the terms. At the same time, numerical terms such as "first", "second" and "third" do not represent specific quantities and orders, but are only used for name distinction. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.
Claims
1. A tree crown pruning device, comprising a handle (1), characterized in that: The handles (1) are provided in two groups, and the upper sides of the two groups of handles (1) are distributed and connected with blades (2), and the two groups of blades (2) are connected via a shear shaft (15). The top ends of the blades (2) are respectively inserted with fixed shafts (3), and the front faces of the fixed shafts (3) are connected with connecting disks (4). The outer movable sleeves of the fixed shafts (3) are provided with rotating sleeves (5), and the front faces of the rotating sleeves (5) are connected with arc plates (6). A limiting rod (7) is inserted into the interior of the arc plates (6), and one end of the limiting rod (7) is connected with a pulling bar (8), and the other end of the pulling bar (8) extends into the connecting disk (4), and the interior of the connecting disk (4) is provided with two groups of slots adapted to the limiting rod (7).
2. A tree crown pruning device according to claim 1, characterized in that: The inner side of the pulling bar (8) is symmetrically connected to a connecting spring (9), and the other end of the connecting spring (9) is connected to the arc plate (6).
3. A tree crown pruning device according to claim 1, characterized in that: Connecting rods (10) are symmetrically inserted into the interior of the arc-shaped plate (6), and the ends of the connecting rods (10) are fixedly connected to the pulling bars (8).
4. A tree crown pruning device according to claim 1, characterized in that: The side edges of the arc-shaped plate (6) are symmetrically connected to a mounting plate (11), and the interior of the mounting plate (11) is connected to the rotating sleeve (5) via bolts.
5. A tree crown pruning device according to claim 1, characterized in that: A protective pad (12) is glued to the front end of the rotating sleeve (5), and the edge of the protective pad (12) is arranged in an arc-shaped structure.
6. A tree crown pruning device according to claim 1, characterized in that: The side edge of the rotating sleeve (5) is connected to a magnet bar (13), and the magnet bar (13) is symmetrically distributed on the side where the two groups of rotating sleeves (5) are close to each other.
7. A tree crown pruning device according to claim 1, characterized in that: The bottom end of the handle (1) is provided with a protective cover (14), and the outer surface of the protective cover (14) is evenly provided with anti-slip patterns.