Portable and adjustable tree scissors

Abstract

The utility model discloses a pair of portable and adjustable tree scissors, and relates to the technical field of tree scissors. The pair of portable and adjustable tree scissors comprises a fixed claw, a movable claw rotationally connected with the fixed claw and a blade arranged on the inner wall of the fixed claw, a first oil cylinder for driving the grabbing position of the movable claw to change is arranged in the fixed claw, a supporting arm is arranged at one end of the fixed claw, and the supporting arm is connected with an excavator small arm. According to the device, the extension arm and the supporting arm which can be telescopically adjusted are arranged between the tree shear and the excavator small arm, so that the arrangement position of the tree shear can be adjusted and controlled in the linear direction, the tree shear can prune branches and leaves at different heights of a tree, and parts such as the rotary seat, the rotary disc and the hydraulic motor are combined, so that the device is convenient to use. The tree shears can be controlled to rotate and adjust in the circumferential direction relative to the excavator small arm, so that the tree shears can trim tree branches and leaves according to the growth directions of different branches and leaves, and the trimming range of the tree shears is effectively widened.

Description

Technical Field

[0001] This utility model relates to the field of tree pruning technology, specifically a portable and adjustable tree pruning shears. Background Technology

[0002] Trees grow by extending many branches and leaves. When branches and leaves grow excessively, they absorb nutrients from the tree itself. At the same time, the branches and leaves extending in all directions can make the tree look unbalanced and unsightly. Therefore, tree shears are used to prune the excess branches and leaves. In order to increase the convenience of the pruning process, the shears are mounted on the arm of an excavator, and the excavator drives the tree shears to prune the branches and leaves.

[0003] The excavator boom has a fixed length, which limits the height at which it can move the tree shears. This makes it difficult to precisely move the shears to the desired pruning positions on trees of different heights. Furthermore, the growth directions of tree branches vary, requiring different pruning angles. Since the connection between the tree shears and the excavator boom cannot be changed, the pruning angle is limited. When using shears with the same pruning angle to prune branches in different growth directions, uneven cuts or even tree tearing can occur. To address these shortcomings, we propose a portable, adjustable tree shear to solve these problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a portable and adjustable tree shears. This solves the problem that tree shears cannot be precisely moved to the desired pruning position on trees of different heights, and that the growth direction of tree branches and leaves also varies. Furthermore, the connection position between the tree shears and the excavator arm cannot be changed, resulting in a single pruning angle. When tree shears with the same pruning angle are used to prune branches and leaves on trees with different growth directions, uneven cuts or even tree tearing may occur.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a portable and adjustable tree shears, comprising a fixed claw, a movable claw rotatably connected to the fixed claw, and a blade disposed on the inner wall of the fixed claw. The fixed claw contains a first hydraulic cylinder that drives the movable claw to change its gripping position. A support arm is disposed at one end of the fixed claw, and one end of the support arm is connected to the excavator boom. An adjustment mechanism is provided between the fixed claw and the support arm, the adjustment mechanism comprising:

[0006] An extension arm is telescopically connected to a support arm, and a connecting seat is hinged at the end of the extension arm away from the support arm.

[0007] A rotary assembly is disposed between a connecting seat and a fixed claw. The rotary assembly includes a rotary seat fixedly disposed on one side of the connecting seat, a rotary disk rotatably disposed inside the rotary seat, a hydraulic motor disposed on the outer wall of the rotary seat for driving the rotary disk to rotate circumferentially, and an mounting component disposed on one side of the rotary disk and fixedly connected to the fixed claw.

[0008] A screw, which is rotatably mounted on the outer wall of the mounting component, locks the mounting component and the fixing claw together.

[0009] Preferably, a linkage mechanism is provided between the extension arm and the connecting seat, the linkage mechanism being used to adjust the gripping position of the fixed claw and the movable claw in the vertical direction after assembly.

[0010] Preferably, the linkage mechanism includes a connecting frame hinged between the extension arm and the connecting seat, and a second hydraulic cylinder hinged between the connecting frame and the connecting seat.

[0011] Preferably, a stabilizing component is provided at the end of the support arm away from the fixed claw. The stabilizing component includes a stabilizing seat fixedly connected to one end of the support arm and a rubber block disposed on the top surface of the stabilizing seat. The top surface of the rubber block abuts against the lower side of the excavator boom.

[0012] Preferably, a support base is fixedly provided on the outer wall of the support arm, a first shaft connected to the excavator boom is rotatably provided on the inner wall of the support base, and a second shaft connected to the I-beam is rotatably provided on the inner wall of the support base.

[0013] Preferably, a connecting cavity is formed inside one end of the fixing claw, and one end of the first hydraulic cylinder is disposed inside the connecting cavity.

[0014] Preferably, one end of the fixed claw is rotatably provided with a main shaft for supporting the movable claw, and one end of the first hydraulic cylinder is provided with a connecting shaft that is hinged to one end of the movable claw.

[0015] This utility model discloses a portable and adjustable tree shears, which has the following beneficial effects: This portable and adjustable tree shears, by setting an extendable and adjustable extension arm and support arm between the tree shears and the excavator boom, allows the position of the tree shears to be adjusted in a straight line, so that the tree shears can prune branches and leaves at different heights of the tree. In addition, by combining components such as a rotary seat, rotary table and hydraulic motor, the tree shears can be controlled to rotate in a circumferential direction relative to the excavator boom, so that the tree shears can prune branches and leaves according to different growth directions of branches and leaves, effectively increasing the pruning range of the tree shears. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the connection structure of the fixing claw and the adjusting mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the connection structure between the extended arm and the support arm of this utility model;

[0020] Figure 4 This is an exploded view of the fixed claw and rotating assembly structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection structure between the fixed claw and the movable claw of this utility model;

[0022] Figure 6 This is a schematic diagram of the fixing claw and connecting cavity structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the connection structure between the movable claw and the hydraulic cylinder of this utility model;

[0024] Figure 8 This is a schematic diagram of the connecting seat, rotating seat, and rotary table structure of this utility model.

[0025] In the diagram: 1. Fixed claw; 11. Main shaft; 12. Connecting cavity; 2. Movable claw; 21. Connecting shaft; 22. First hydraulic cylinder; 3. Blade; 4. Support arm; 41. Support seat; 42. First shaft; 43. Second shaft; 5. Adjustment mechanism; 51. Extension arm; 52. Connecting seat; 53. Rotary assembly; 531. Rotary seat; 532. Rotary disk; 533. Hydraulic motor; 534. Mounting component; 535. Screw; 6. Linkage mechanism; 61. Connecting frame; 62. Second hydraulic cylinder; 7. Stabilizing assembly; 71. Stabilizing seat; 72. Rubber block. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] This application provides a portable and adjustable tree shears, which solves the problem that tree shears cannot be accurately moved to the desired pruning position on trees of different heights, and that the growth direction of tree branches and leaves also varies. The connection position between the tree shears and the excavator arm cannot be changed, resulting in a single pruning angle. When tree shears with the same pruning angle are used to prune tree branches and leaves with different growth directions, it will cause uneven cuts and even tree tearing. This application enables the installation position of the tree shears relative to the excavator arm to be adjusted in both straight and circumferential directions.

[0028] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0029] This utility model discloses a portable and adjustable tree shears.

[0030] According to the appendix Figure 1-8 As shown, the pruning shears include a fixed claw 1, a movable claw 2 rotatably connected to the fixed claw 1, and a blade 3 disposed on the inner wall of the fixed claw 1. A main shaft 11 for supporting the movable claw 2 is rotatably mounted at one end of the fixed claw 1. A first hydraulic cylinder 22 for driving the movable claw 2 to change its gripping position is disposed inside the fixed claw 1. A connecting cavity 12 is opened inside one end of the fixed claw 1, and one end of the first hydraulic cylinder 22 is disposed inside the connecting cavity 12. A connecting shaft 21 hinged to one end of the movable claw 2 is provided at one end of the first hydraulic cylinder 22. The pruning shears mainly consist of a fixed claw 1, a movable claw 2, a blade 3, and a first hydraulic cylinder 22. Composed of components such as cylinder 22, the overall structure is compact and easy to carry. In use, the first hydraulic cylinder 22 controls the movable claw 2 to open or close relative to the fixed claw 1, thereby clamping trees, dead branches, and diseased branches by the fixed claw 1 and movable claw 2 at different degrees of opening. Then, the first hydraulic cylinder 22 continues to drive the movable claw 2 to rotate, so that the movable claw 2 and the fixed claw 1 gradually tighten. During this process, trees, dead branches, and diseased branches are pruned under the action of the blade 3, so as to adjust the shape and structure of the tree, promote the healthy growth of the plant, and beautify the tree shape.

[0031] See attached document Figure 3One end of the fixed claw 1 is provided with a support arm 4. The outer wall of the support arm 4 is fixedly provided with a support seat 41. The inner wall of the support seat 41 is rotatably provided with a first shaft 42 connected to the excavator arm. The inner wall of the support seat 41 is rotatably provided with a second shaft 43 connected to the I-beam frame. That is, by controlling the excavator, the support arm 4 is driven to move, so that the tree shears provided at one end of the support arm 4 can be moved to different heights of the tree, thereby pruning dead branches and diseased branches at different heights of the tree.

[0032] See attached document Figure 2-4 An adjustment mechanism 5 is provided between the fixed claw 1 and the support arm 4. The adjustment mechanism 5 expands the range of movement of the tree shears on the basis of the original support arm 4, and can control the tree shears to rotate 360 ​​degrees. This allows the tree shears to be adjusted to the appropriate direction for pruning branches and leaves with different growth directions, and also increases the pruning range of the tree shears. The adjustment mechanism 5 includes an extension arm 51, which is telescopically connected to the support arm 4. One end of the support arm 4 can be connected to a drive component that controls the extension and retraction of the extension arm 51. The drive component is connected to the excavator. The drive component is not specifically shown in the figure. The end of the extension arm 51 away from the support arm 4 is hinged to a connecting seat 52. That is, by controlling the extension arm 51 to slide along the support arm 4, the total length between the combined extension arm 51 and the support arm 4 can be adjusted. When facing tall trees, the tree shears installed at one end of the combined extension arm 51 and the support arm 4 can also meet the pruning needs of branches and leaves at the top of the tree.

[0033] See attached document Figure 4 and attached Figure 8The rotating component 53 is located between the connecting seat 52 and the fixed claw 1. Through the rotating component 53, the tree shears can rotate 360 ​​degrees around the connecting seat 52. When the tree shears rotate in a circle, they can cover a larger pruning area. Simple straight-line pruning can only prune branches in one direction or on one plane. Circular rotation allows the blades of the tree shears to contact the branches at different angles, processing branches in multiple directions at once. Furthermore, tree branches grow in various directions—upward, horizontal, and downward bending. The rotating tree shears can flexibly prune according to these different growth directions. Regardless of the branch's direction of growth, by adjusting the circular motion trajectory of the tree shears, a suitable angle can be found to prune the branch. To facilitate smoother pruning and avoid difficulties caused by unfavorable branch growth direction, the rotary assembly 53 includes a rotary seat 531 fixedly mounted on one side of the connecting seat 52, a rotary disk 532 rotatably mounted inside the rotary seat 531, a hydraulic motor 533 mounted on the outer wall of the rotary seat 531 for driving the rotary disk 532 to rotate circumferentially, and an installation member 534 mounted on one side of the rotary disk 532 and fixedly connected to the fixing claw 1. A screw 535 is rotatably mounted on the outer wall of the installation member 534, locking the installation member 534 and the fixing claw 1 through the screw 535. By turning on the hydraulic motor 533, the rotary disk 532 is driven to rotate circumferentially along the rotary seat 531, thereby driving the tree shears connected to one side of the rotary disk 532 to rotate circumferentially to meet different tree pruning needs.

[0034] See attached document Figure 2 and attached Figure 8 A linkage mechanism 6 is provided between the extension arm 51 and the connecting seat 52. The linkage mechanism 6 is used to adjust the gripping position of the fixed claw 1 and the movable claw 2 in the vertical direction after assembly. The linkage mechanism 6 includes a connecting frame 61 hinged between the extension arm 51 and the connecting seat 52, and a second hydraulic cylinder 62 hinged between the connecting frame 61 and the connecting seat 52. (See attached figure) Figure 8 The connecting frame 61 consists of two sets of hinged frames. One set of frames is hinged to one end of the extension arm 51, and the other set of frames is hinged to the connecting seat 52. The hinged positions of the two sets of frames are also hinged to one end of the second hydraulic cylinder 62. Specifically, by activating the second hydraulic cylinder 62, the second hydraulic cylinder 62 extends or retracts, thereby driving the connecting seat 52, which is controlled by the second hydraulic cylinder 62, to rotate downward or upward around one end of the extension arm 51 as the axis, so as to drive the tree shears installed on one side of the connecting seat 52 to adjust their position in the vertical direction.

[0035] See attached document Figure 3A stabilizing component 7 is provided at the end of the support arm 4 away from the fixed claw 1. The stabilizing component 7 includes a stabilizing seat 71 fixedly connected to one end of the support arm 4 and a rubber block 72 disposed on the top surface of the stabilizing seat 71. The top surface of the rubber block 72 abuts against the lower side of the excavator arm. When the extension arm 51 and the support arm 4 move downward after the excavator arm control assembly, the rubber block 72 abutting against the lower side of the excavator arm can limit its movement.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A portable adjustable tree shears, comprising a fixed claw (1), a movable claw (2) rotatably connected to the fixed claw (1), and a blade (3) disposed on the inner wall of the fixed claw (1), wherein the fixed claw (1) is provided with a first hydraulic cylinder (22) for driving the movable claw (2) to change its gripping position, and a support arm (4) is provided at one end of the fixed claw (1), one end of the support arm (4) being connected to the excavator boom, characterized in that, An adjustment mechanism (5) is provided between the fixed claw (1) and the support arm (4), the adjustment mechanism (5) comprising: An extension arm (51) is telescopically connected to a support arm (4), and a connecting seat (52) is hinged at the end of the extension arm (51) away from the support arm (4). A rotary assembly (53) is disposed between a connecting seat (52) and a fixed claw (1). The rotary assembly (53) includes a rotary seat (531) fixedly disposed on one side of the connecting seat (52), a rotary disk (532) rotatably disposed inside the rotary seat (531), a hydraulic motor (533) disposed on the outer wall of the rotary seat (531) for driving the rotary disk (532) to rotate circumferentially, and a mounting component (534) disposed on one side of the rotary disk (532) and fixedly connected to the fixed claw (1). A screw (535) is rotatably disposed on the outer wall of the mounting part (534), and the mounting part (534) and the fixing claw (1) are locked by the screw (535).

2. The portable adjustable tree shears according to claim 1, characterized in that: A linkage mechanism (6) is provided between the extension arm (51) and the connecting seat (52). The linkage mechanism (6) is used to adjust the gripping position of the fixed claw (1) and the movable claw (2) in the vertical direction after assembly.

3. The portable adjustable tree shears according to claim 2, characterized in that: The linkage mechanism (6) includes a connecting frame (61) hinged between the extension arm (51) and the connecting seat (52) and a second hydraulic cylinder (62) hinged between the connecting frame (61) and the connecting seat (52).

4. The portable and adjustable tree shears according to claim 1, characterized in that: The support arm (4) is provided with a stabilizing component (7) at one end away from the fixed claw (1). The stabilizing component (7) includes a stabilizing seat (71) fixedly connected to one end of the support arm (4) and a rubber block (72) disposed on the top surface of the stabilizing seat (71). The top surface of the rubber block (72) abuts against the lower side of the excavator arm.

5. A portable and adjustable tree shears according to claim 4, characterized in that: The outer wall of the support arm (4) is fixedly provided with a support seat (41), the inner wall of the support seat (41) is rotatably provided with a first shaft (42) connected to the excavator boom, and the inner wall of the support seat (41) is rotatably provided with a second shaft (43) connected to the I-beam frame.

6. A portable and adjustable tree shears according to claim 1, characterized in that: One end of the fixed claw (1) has a connecting cavity (12) inside, and one end of the first oil cylinder (22) is located inside the connecting cavity (12).

7. A portable and adjustable tree shears according to claim 1, characterized in that: One end of the fixed claw (1) is rotatably provided with a main shaft (11) for supporting the movable claw (2), and one end of the first oil cylinder (22) is provided with a connecting shaft (21) that is hinged to one end of the movable claw (2).

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