High branch scissors with height convenient to adjust

Abstract

The utility model belongs to the technical field of high branch shears, and particularly relates to a pair of high branch shears convenient for height adjustment, which solves the problems of inconvenience in adjustment and low working efficiency in the prior art, and comprises a square tube and a connecting rod, one end of the square tube and one end of the connecting rod are jointly and movably hinged with a shear head, and a pulley is rotatably mounted in the connecting rod. Guide blocks are fixedly connected to the interiors of the connecting rod and the square pipe through screws, a telescopic rod is assembled in the square pipe in a sliding mode, a check block is welded to one end of the telescopic rod, a fixing block is welded to one side of the telescopic rod, and a limiting block is assembled in the square pipe in a sliding mode. When high branches need to be trimmed, the telescopic rod can be pulled out from the interior of the square pipe, after the telescopic rod is pulled out, the limiting rod slides into the clamping groove of the telescopic rod to fix the telescopic rod, the structure is simple, operation is convenient, and height adjustment is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of high branch shears, in particular to a high branch shear that is easy to adjust in height. Background Art

[0002] At present, with the acceleration of urbanization and the increase in urban greening areas, the demand for tree pruning is also growing, especially in orchards, parks, roads and other fields, tree pruning is particularly important, traditional pruning tools are often unable to efficiently and safely complete the pruning of high branches, therefore, the market demand for high branch pruning machines is increasing, existing high branch pruning machines often have some limitations, for example, due to the different heights of branches, the length of traditional high branch pruning machines cannot be adjusted, making the operation inconvenient, which not only affects the pruning efficiency, but also may increase the safety risks of operators.

[0003] The application publication number in the prior art is: CN109832027A, and the name is a high-branch shear capable of adjusting the telescopic height. The patent consists of a shearing blade and a high-branch rod. The shearing blade includes key components such as a transmission rod, a transmission spring, a fixed scissor blade and a shearing scissor blade. The upper end of the transmission rod is connected to the rotating rod through a hinge point, so that the transmission rod can move with the rotation of the rotating rod. The rotating rod runs through the entire high-branch rod, so that the operator can control the high shearing blade on the ground or at a lower position. The lower end of the rotating rod is fixedly connected to a pressing handle, and the operator Just press the handle lightly to drive the transmission rod to move through the rotating rod. The transmission spring is installed in the middle of the transmission rod, and its lower end is connected to the shear blade. When the transmission rod is driven, the transmission spring will deform, thereby pushing the shear blade to rotate along the circular axis to achieve the opening and closing action with the fixed scissor blade. This patent adjusts the height of the entire high branch shears through a telescopic sleeve, but the adjustment through the sleeve is easy to shrink during use, which will affect the pruning efficiency, and rotating and pressing the handle requires a larger stroke to adjust the shear blade, which is more inconvenient to use.

[0004] The application publication number in the prior art is: CN112205193A, and the name is a high-branch pruning shear that is easy to adjust. The patent consists of an inner telescopic tube and an outer telescopic tube. The setting of the left-hand handle and the right-hand handle allows the operator to maintain a stable posture during operation, improving the comfort and safety of the operation. The setting of the adjustment component makes it more convenient to adjust the length of the telescopic tube, and the user can easily adjust the length of the telescopic tube as needed. In addition, the coordinated use of the mounting tube and the first tightening bolt further ensures the stability of the telescopic tube after adjustment. This high-branch pruning shear is also equipped with a series of precision mechanical structures such as a rotating bin, a pressing handle, a limit block, and a limit groove. These structures work together to adjust the tightness of the pull rope by turning the winding handle, thereby controlling the movement of the first blade. However, the patent body is relatively long and the length cannot be adjusted, which makes it more troublesome to carry. Utility Model Content

[0005] The utility model aims to provide a high branch shear which is convenient for adjusting the height, thereby solving the problems of inconvenient adjustment and low working efficiency.

[0006] To achieve the above object, the utility model provides the following technical solution: a high branch shear that is easy to adjust in height, comprising a square tube and a connecting rod, wherein one end of the square tube and the connecting rod are jointly and movably hingedly connected with a shear head, a pulley is rotatably installed inside the connecting rod, a guide block is fixedly connected inside the connecting rod and the square tube by screws, and a telescopic rod is slidably installed inside the square tube;

[0007] A stopper is welded at one end of the telescopic rod, a fixed block is welded at one side of the telescopic rod, a limit block is slidingly assembled inside the square tube, one end of the limit block is inclined, the other end of the limit block is fixedly connected to a straight rod by screws, and one side of the straight rod is fixedly connected to a pull block by screws.

[0008] Preferably, a groove is formed inside the two guide blocks, and the insides of the two grooves are commonly connected to a first spring.

[0009] Preferably, a through hole is provided on the connecting rod, the pulley is rotatably installed inside the through hole, a nylon rope is fixedly connected to the fixed block, one end of the nylon rope passes through the inside of the through hole, and adjusting nuts are provided between the connecting rod and the square tube and the shear head.

[0010] Preferably, a square groove is provided inside the square tube, and the telescopic rod is slidably connected inside the square groove.

[0011] Preferably, a limiting groove is provided inside the square tube, the limiting block is slidably connected inside the limiting groove, and a second spring is commonly connected between one end of the limiting block and the side wall of the limiting groove.

[0012] Preferably, a plurality of slots equidistantly distributed in an array are provided inside the telescopic rod, and one end of the limit block is located inside one of the slots.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The utility model is provided with structures such as a limit rod and a telescopic rod. When it is necessary to prune high branches, the telescopic rod can be pulled out from the inside of the square tube. After the telescopic rod is pulled out, the limit rod will slide into the slot of the telescopic rod to fix it. The structure is simple, the operation is convenient, and the height adjustment is also more convenient.

[0015] 2. The utility model sets up structures such as connecting rods and adjusting nuts. Since branches may affect each other during pruning, the shearing head needs to adjust the angle for pruning certain branches. Therefore, the connecting rod and the square tube are movably hinged to the shearing head to make angle adjustment more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the connecting rod of the utility model;

[0018] Figure 3 It is a side sectional view of the square tube of the utility model;

[0019] Figure 4 It is an enlarged view of point A of the present utility model.

[0020] In the figure: 1. square tube; 2. connecting rod; 3. nylon rope; 4. fixing block; 5. telescopic rod; 6. pulling block; 7. shear head; 8. guide block; 9. first spring; 10. adjusting nut; 11. groove; 12. stopper; 13. square groove; 14. slot; 15. limit block; 16. second spring; 17. straight rod; 18. pulley. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4, a high branch shear that is easy to adjust the height, includes a square tube 1 and a connecting rod 2, one end of the square tube 1 and the connecting rod 2 are jointly movably hinged with a shear head 7, a pulley 18 is rotatably installed inside the connecting rod 2, and the connecting rod 2 and the square tube 1 are both connected to a guide block 8 by screws. The inside of the square tube 1 is slidably equipped with a telescopic rod 5, one end of the telescopic rod 5 is welded with a stopper 12, and one side of the telescopic rod 5 is welded with a fixing block 4. The inside of the square tube 1 is slidably equipped with a limit block 15, one end of the limit block 15 is inclined, and the other end of the limit block 15 is fixedly connected to a straight rod 17 by screws, and one side of the straight rod 17 is fixedly connected to a pull block 6 by screws. Through the arrangement of structures such as the limit rod and the telescopic rod 5, when it is necessary to prune high branches, the telescopic rod 5 can be pulled out from the inside of the square tube 1. After the telescopic rod 5 is pulled out, the limit rod will slide into the slot 14 of the telescopic rod 5 to fix it. The structure is simple, the operation is convenient, and the height adjustment is also more convenient.

[0023] See also Figure 2 A groove 11 is provided inside the two guide blocks 8, and a first spring 9 is connected to the inside of the two grooves 11. Through the arrangement of structures such as the connecting rod 2 and the adjusting nut 10, since the branches will affect each other during pruning, the shearing head 7 needs to adjust the angle for pruning some branches. Therefore, the connecting rod 2 and the square tube 1 are movably hinged to the shearing head 7 to make the angle adjustment more convenient.

[0024] See also Figure 1-4 A through hole is provided on the connecting rod 2, and a pulley 18 is rotatably installed inside the through hole. A nylon rope 3 is fixedly connected to the fixed block 4, and one end of the nylon rope 3 passes through the inside of the through hole. An adjusting nut 10 is arranged between the connecting rod 2 and the square tube 1 and the shear head 7. A square groove 13 is provided inside the square tube 1, and the telescopic rod 5 is slidably connected inside the square groove 13. A limiting groove is provided inside the square tube 1, and a limiting block 15 is slidably connected inside the limiting groove. A second spring 16 is commonly connected between one end of the limiting block 15 and the side wall of the limiting groove. A plurality of slots 14 equidistantly distributed in an array are provided inside the telescopic rod 5, and one end of the limiting block 15 is located inside one of the slots 14.

[0025] The specific implementation process of the utility model is as follows: in order to facilitate the trimming of the high pole, the telescopic rod 5 can be pulled out from the inside of the square tube 1. Since one end of the limit rod is inclined, when the telescopic rod 5 is pulled out, the limit rod will not be stuck in the inside of the card slot 14, and due to the second spring 16, the limit rod will be pushed forward all the time, so that the telescopic rod 5 cannot slide into the inside of the square tube 1, and then the nylon rope 3 can be pulled to make the nylon rope 3 pull the connecting rod 2 to move downward, so that the shear head 7 can be moved, thereby adjusting the height to trim the pole;

[0026] Furthermore, during the pruning process, branches may interfere with each other. In order to make pruning more convenient, the adjusting nut 10 can be loosened so that the angle of the connecting rod 2, the square tube 1 and the shear head 7 can be adjusted, and then fixed with the nut, making pruning more convenient and improving pruning efficiency.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-branch pruning shears that is easy to adjust in height, comprising a square tube (1) and a connecting rod (2), characterized in that: The square tube (1) and one end of the connecting rod (2) are jointly and movably hingedly connected with a shear head (7); a pulley (18) is rotatably installed inside the connecting rod (2); a guide block (8) is fixedly connected inside the connecting rod (2) and the square tube (1) by screws; and a telescopic rod (5) is slidably installed inside the square tube (1); A stopper (12) is welded to one end of the telescopic rod (5), a fixed block (4) is welded to one side of the telescopic rod (5), a limit block (15) is slidably assembled inside the square tube (1), one end of the limit block (15) is inclined, the other end of the limit block (15) is fixedly connected to a straight rod (17) by means of screws, and one side of the straight rod (17) is fixedly connected to a pull block (6) by means of screws.

2. The high branch shears that are easy to adjust in height according to claim 1, characterized in that: A groove (11) is provided inside each of the two guide blocks (8), and a first spring (9) is commonly connected inside the two grooves (11).

3. The high branch shears that are easy to adjust in height according to claim 1, characterized in that: The connecting rod (2) is provided with a through hole, the pulley (18) is rotatably mounted inside the through hole, a nylon rope (3) is fixedly connected to the fixed block (4), one end of the nylon rope (3) passes through the inside of the through hole, and an adjusting nut (10) is provided between the connecting rod (2) and the square tube (1) and the shear head (7).

4. The high branch shears that are easy to adjust in height according to claim 1, characterized in that: A square groove (13) is provided inside the square tube (1), and the telescopic rod (5) is slidably connected inside the square groove (13).

5. The high branch shears that are easy to adjust in height according to claim 1, characterized in that: A limiting groove is provided inside the square tube (1), the limiting block (15) is slidably connected inside the limiting groove, and a second spring (16) is commonly connected between one end of the limiting block (15) and the side wall of the limiting groove.

6. The high branch shears that are easy to adjust in height according to claim 1, characterized in that: The interior of the telescopic rod (5) is provided with a plurality of slots (14) distributed in an array at equal intervals, and one end of the limit block (15) is located inside one of the slots (14).

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