A type of elevated pruning shears for planting *Vernicia fordii* trees.

Abstract

This utility model discloses an overhead shears for pruning branches of *Vernicia fordii*, relating to the technical field of pruning tools. It includes a blade holder, which is Z-shaped overall. A horizontal groove is formed in the middle of the upper end, extending through the front end, and a vertical mounting groove is formed at the middle connection point. This utility model provides strong power for the scissor blades and the blade edge on one side of the blade holder to merge by installing a telescopic rod on the top surface of the lower end of the blade holder, enabling the cutting of thick branches. The funnel-shaped structure and nut at the lower end of the connecting tube facilitate the installation of the connecting rod, making it easier to control the position of the blade holder with both hands. The telescopic rod, slider, stop rod, spring, trapezoidal groove one, and trapezoidal groove two work together to control the up-and-down movement of the scissor blade handle, enabling the scissor blades to close and separate from the blade holder. The tension spring facilitates the quick reset of the scissor blades, ultimately solving the problem of insufficient shearing force in overhead pruning.

Description

Technical Field

[0001] This utility model relates to the technical field of tree pruning tools, and in particular to an elevated tree pruning shears for planting *Vernicia fordii*. Background Technology

[0002] A pruning shears is a gardening tool specifically designed for pruning branches and leaves at height. It is primarily used for pruning branches in high places, such as street trees, fruit trees, and landscape trees. It can also be used for pruning tall plants around buildings, in parks, and courtyards. The main components of a traditional pruning shears include a rope, shear blades, a blade holder, a connecting rod, and a pulley mechanism that forms a labor-saving device. In use, one hand typically holds the connecting rod to place the blade holder onto the branch to be pruned, while the other hand pulls the rope to activate the pulley mechanism. The other end of the rope then pulls the handle of the shear blades, causing the blades to close and complete the pruning process. However, when encountering some thicker branches, the labor-saving device composed of the pulley mechanism and the pulling force of the rope alone are insufficient to cut the branch. Therefore, the above-mentioned technical problems need to be addressed. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a high-frame shear for pruning branches in the planting of *Vernicia fordii*.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-frame pruning shears for pruning branches of *Vernicia fordii* planting, comprising a blade holder, the blade holder being Z-shaped in general, with a horizontally opening blade groove in the middle of the upper end extending through the front end, and a vertically opening mounting groove at the middle connection point, with a longitudinally opening stop bar at the lower end of the mounting groove, the bottom surface of the upper end of the blade holder being a concave arc structure, and a blade being provided on one side of the upper end of the blade holder.

[0005] Preferably, a connecting pipe is vertically installed on the bottom surface of the lower end of the tool holder. The lower end of the connecting pipe is a trumpet-shaped structure with a cross opening in the middle of the trumpet-shaped structure, which extends through the bottom surface of the trumpet-shaped structure. A threaded groove is opened on the outer wall of the trumpet-shaped structure. A nut is installed at the lower end of the connecting pipe, and the nut is threadedly connected to the trumpet-shaped structure.

[0006] Preferably, a scissor blade is vertically and obliquely installed in the mounting groove of the knife holder, the middle part of the scissor blade is movably hinged to the middle part of the knife holder, and the back of the scissor blade abuts against the shank. A tension spring is vertically and obliquely installed in the middle of the top surface of the knife holder, and the two ends of the tension spring are respectively fixed to the top surface of the knife holder and the front end face of the handle of the scissor blade.

[0007] Preferably, the handle of the scissor blade has a trapezoidal groove 1 and a trapezoidal groove 2 vertically formed in the middle. The trapezoidal groove 1 and the trapezoidal groove 2 are of equal structure and are distributed in parallel front to back. The two ends of the trapezoidal groove 1 and the trapezoidal groove 2 are staggered and connected. The rear end face of the scissor blade has a vertically formed sliding groove that extends into the trapezoidal groove 2 and is aligned with the two ends of the trapezoidal groove 2.

[0008] Preferably, a slider is vertically installed at the lower inner side of the trapezoidal groove II, one end of the slider passes through the trapezoidal groove I and the rear end face of the scissor blade, and a telescopic rod is vertically installed on the top surface of the lower end of the blade holder, with both ends of the telescopic rod being movably hinged to the top surface of the lower end of the blade holder and the other end of the slider, respectively.

[0009] Preferably, the slider has a T-shaped structure, and mounting holes are longitudinally provided on both sides of the lower end of the slider. Springs and abutments are respectively installed in the mounting holes. The two ends of the springs abut against the bottom surface of the mounting holes and one end of the abutments, respectively. The other ends of the two abutments abut against the inner walls of the two sides of the trapezoidal groove.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: In this utility model, by installing a telescopic rod on the top surface of the lower end of the blade holder, it is convenient to provide strong power for the merging of the scissor blade and the blade on one side of the blade holder, so as to cut thick branches. The funnel-shaped structure and nut at the lower end of the connecting tube facilitate the installation of the connecting rod, and it is easier to control the position of the blade holder with both hands by holding the connecting rod. Through the cooperation of the telescopic rod, slider, stop rod, spring, trapezoidal groove one and trapezoidal groove two, it is convenient to control the blade handle of the scissor blade to move up and down, so as to realize the function of closing and separating the scissor blade and the blade holder. The tension spring facilitates the quick reset of the scissor blade, thus solving the problem of insufficient shearing force in overhead shearing. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0012] Figure 1 This is a front view schematic diagram of the overall structure proposed in this utility model;

[0013] Figure 2 This is a side view of the overall structure proposed in this utility model;

[0014] Figure 3 This is a side sectional view of the overall structure proposed in this utility model;

[0015] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the slider proposed in this utility model;

[0016] Figure 5This is a cross-sectional schematic diagram of the internal structure of the knife handle proposed in this utility model.

[0017] The numbers in the diagram are: 1. Knife holder; 2. Connecting pipe; 3. Nut; 4. Scissor blade; 5. Telescopic rod; 6. Tension spring; 7. Slider; 8. Stop rod; 9. Spring. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Example: See Figure 1-5 This utility model discloses a high-frame shears for pruning branches of *Vernicia fordii* (a type of privet), comprising a blade holder 1. The blade holder 1 is Z-shaped, with a horizontally opening at the middle of the upper end that extends through the front end, and a vertically opening at the middle connection point. A stop bar is longitudinally provided at the lower end of the installation groove. The bottom surface of the upper end of the blade holder 1 has a concave arc structure, and a blade is provided on one side of the upper end of the blade holder 1. A connecting pipe 2 is vertically installed on the bottom surface of the lower end of the blade holder 1. The lower end of the connecting pipe 2 has a trumpet-shaped structure with a cross opening in the middle that extends through the bottom surface of the trumpet-shaped structure. A threaded groove is provided on the outer wall of the trumpet-shaped structure. A nut 3 is installed at the lower end of the connecting pipe 2, and the nut 3 is threadedly connected to the trumpet-shaped structure. The trumpet-shaped structure at the lower end of the connecting pipe 2 and the nut 3 facilitate the installation and fixing of the connecting rod. The concave arc structure at the upper end of the blade holder 1 facilitates hooking branches. The blade on one side facilitates cutting branches when combined with the shear blade 4. The Z-shaped structure facilitates the installation of the shear blade 4 and the telescopic rod 5.

[0020] In this utility model, a scissor blade 4 is vertically and obliquely installed in the mounting groove of the knife holder 1. The middle part of the scissor blade 4 is movably hinged to the middle part of the knife holder 1, and the back of the scissor blade 4 abuts against the blade handle. A tension spring 6 is vertically and obliquely installed in the middle of the top surface of the knife holder 1. The two ends of the tension spring 6 are respectively fixed to the top surface of the knife holder 1 and the front end face of the handle of the scissor blade 4. A trapezoidal groove 1 and a trapezoidal groove 2 are vertically opened in the middle of the handle of the scissor blade 4. The trapezoidal groove 1 and the trapezoidal groove 2 are of equal structure and are distributed in parallel front and back. The two ends of the trapezoidal groove 1 and the trapezoidal groove 2 are staggered and connected. A sliding groove is vertically opened in the rear end face of the scissor blade 4. The sliding groove extends into the trapezoidal groove 2, and its two ends are aligned with the two ends of the trapezoidal groove 2. A slider 7 is vertically installed in the lower inner side of the trapezoidal groove 2. One end of the slider 7 extends through the trapezoidal groove 1 and the rear end face of the scissor blade 4. A telescopic rod 5 is vertically installed in the top surface of the lower end of the knife holder 1. The two ends of the telescopic rod 5 are respectively fixed to the front end of the knife holder 1 and the back end face of the scissor blade 4. The slider 7 is hinged to the top surface of the lower end of the blade holder 1 and the other end of the slider 7. The slider 7 has a T-shaped structure, and mounting holes are longitudinally opened on both sides of the lower end of the slider 7. Springs 9 and abutment rods 8 are installed in the mounting holes respectively. The two ends of the springs 9 abut against the bottom surface of the mounting holes and one end of the abutment rods 8 respectively. The other ends of the two abutment rods 8 abut against the inner walls of the two sides of the trapezoidal groove. By opening two trapezoidal grooves on the back of the handle of the scissor blade 4, the slider 7 can move unidirectionally in the two trapezoidal grooves. The tension spring 6 can pull the handle of the scissor blade 4 so that the scissor blade 4 can quickly return to the mounting groove of the blade holder 1. The telescopic rod 5 can control the handle of the scissor blade 4 to move up and down, so that the scissor blade 4 and the blade holder 1 can be combined. The cooperation of the springs 9 and the abutment rods 8 can facilitate the movement of the slider 7 in the trapezoidal groove and keep it close to the inner walls of the two sides of the trapezoidal groove. The spring 9 can also facilitate the movement of the slider 7 in the trapezoidal groove.

[0021] Working Principle: When using this utility model, firstly, before using the overhead shears, insert a connecting rod into the connecting tube 2 to increase the length of the overhead shears. Then, tighten the nut 3 to compress the trumpet-shaped structure of the connecting tube 2 to achieve fixation. Next, send the blade holder 1 to the branch to be pruned through the connecting rod, and hook the branch through the concave arc structure at the upper end of the blade holder 1. Then, retract the telescopic rod 5 to drive the slider 7, which is hinged to one end of the telescopic rod 5, to move upward from the bottom of the lower end of the trapezoidal groove. When it moves to the upper end of the first trapezoidal groove, the shear blade 4 closes with the blade on one side of the blade holder 1 to complete the cut. At the same time, since the first and second trapezoidal grooves are staggered and connected at their larger and smaller ends, forming a trapezoidal structure, the slider 7 slides and moves into the second trapezoidal groove through the cooperation of the spring 9 and the stop rod 8. At the same time, the tension spring 6 pulls the handle of the shear blade 4 forward, and the cooperation of the telescopic rod 5 and the slider 7 facilitates the quick reset of the shear blade 4 and its return to the mounting groove of the blade holder 1, which is convenient for subsequent pruning.

[0022] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A type of high-frame pruning shears for pruning branches of *Vernicia fordii*, comprising a shear frame (1), characterized in that: The tool holder (1) is Z-shaped in general. A horizontal groove is opened in the middle of the upper end and passes through the front end. A vertical mounting groove is opened at the middle connection. A stop bar is provided at the lower end of the mounting groove. The bottom surface of the upper end of the tool holder (1) is a concave arc structure, and a blade is provided on one side of the upper end of the tool holder (1).

2. The elevated pruning shears for pruning branches in planting *Vernicia fordii* as described in claim 1, characterized in that: A connecting pipe (2) is vertically installed on the bottom surface of the lower end of the tool holder (1). The lower end of the connecting pipe (2) is a horn-shaped structure. A cross opening is opened in the middle of the horn-shaped structure and penetrates the bottom surface of the horn-shaped structure. A threaded groove is opened on the outer wall of the horn-shaped structure. A nut (3) is installed on the lower end of the connecting pipe (2). The nut (3) is threadedly connected to the horn-shaped structure.

3. The elevated pruning shears for pruning branches in planting *Vernicia fordii* as described in claim 1, characterized in that: A scissor blade (4) is vertically and inclinedly installed in the mounting groove of the knife holder (1). The middle part of the scissor blade (4) is movably hinged to the middle part of the knife holder (1), and the back of the scissor blade (4) abuts against the knife bar. A tension spring (6) is vertically and inclinedly installed in the middle of the top surface of the knife holder (1). The two ends of the tension spring (6) are respectively fixed to the top surface of the knife holder (1) and the front end face of the handle of the scissor blade (4).

4. The elevated pruning shears for pruning branches in planting *Vernicia fordii* as described in claim 3, characterized in that: The handle of the scissor blade (4) has a trapezoidal groove 1 and a trapezoidal groove 2 vertically formed in the middle. The trapezoidal groove 1 and the trapezoidal groove 2 are of equal structure and are distributed in parallel front to back. The two ends of the trapezoidal groove 1 and the trapezoidal groove 2 are staggered and connected. The rear end face of the scissor blade (4) has a sliding groove vertically formed. The sliding groove extends into the trapezoidal groove 2 and its two ends are aligned with the two ends of the trapezoidal groove 2.

5. The elevated pruning shears for pruning branches in planting *Vernicia fordii* as described in claim 4, characterized in that: A slider (7) is vertically installed at the lower end of the inner side of the trapezoidal groove. One end of the slider (7) passes through the trapezoidal groove and the rear end face of the scissor blade (4). A telescopic rod (5) is vertically installed on the top surface of the lower end of the blade holder (1). The two ends of the telescopic rod (5) are respectively movably hinged to the top surface of the lower end of the blade holder (1) and the other end of the slider (7).

6. The elevated pruning shears for pruning branches in planting *Vernicia fordii* as described in claim 5, characterized in that: The slider (7) is a T-shaped structure. The slider (7) has mounting holes on both sides at the lower end. Springs (9) and abutments (8) are installed in the mounting holes respectively. The two ends of the springs (9) abut against the bottom surface of the mounting holes and one end of the abutments (8) respectively. The other ends of the two abutments (8) abut against the inner walls of the trapezoidal grooves on both sides respectively.

Images