Tree shearing claw for excavator

Abstract

A connecting frame is fixedly connected with a box body connecting disc, two rotating oil cylinders are installed in a box body, a left output plate and a right output plate which output torsion are installed at the two ends of each rotating oil cylinder respectively, and a shearing claw welding piece and a control machine are fixedly installed at the two ends of each rotating oil cylinder. The tree shearing claw is controlled to enable the output ends of the left and right rotating oil cylinders to drive the left output plate and the right output plate to rotate inwards or outwards at the same time, synchronous inner rotation or outer rotation of the left claw welding piece and the right claw welding piece is achieved, during inner rotation, the left claw welding piece and the right claw welding piece rotate towards the central axis at the same time, and tight holding is achieved. According to the double-edged tree pruning machine, trees can be sheared and grabbed at the same time, the working time is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a tree shear, in particular to a tree shear grab for an excavator. Background Art

[0002] Existing tree shears generally mainly use small tools such as electric saws, and the operation is mainly carried out by manual hand-holding during shearing. Such small tools are mainly for branches with relatively small diameters, and the operation is relatively convenient during shearing. However, for tree trunks with relatively high trees and large diameters, it is very laborious to operate such small tools, resulting in high labor intensity of workers, long operation time, and low efficiency. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides a tree shear grab for an excavator, and its technical solution is as follows:

[0004] It includes a connecting frame, which is installed on the body mounting frame. The connecting frame is connected to the box body connecting plate through a fixing member, and also includes a box body assembly. The top of the box body assembly is fixed with the box body connecting plate;

[0005] Inside the box body assembly, there are two rotary cylinders, which are symmetrically arranged along the central axis of the box body assembly and are respectively fixedly installed on the upper cover plate of the box body assembly through fixing members;

[0006] The front and rear ends of the rotary cylinder are respectively installed with rotary cylinder output plates for outputting torque, which are fixedly connected to the shear claw welded part;

[0007] On the side of the rotary cylinder output plate, there is a positioning transmission groove, which is installed in cooperation with the positioning transmission pin shaft on the shear claw welded part. There are screw holes arranged on the upper plane of the rotary cylinder output plate, and the shear claw welded part is limited and installed and fixed through the left and right claw positioning bolts;

[0008] The shear claw welded part is respectively a left claw welded part and a right claw welded part. The left claw welded part and the right claw welded part are arranged oppositely, and are respectively composed of an arc-shaped plate and a knife plate. One end of the arc-shaped plate is connected to the rotary cylinder output plate, and the inner end of the other end is fixedly installed with the knife plate, and the cutting edge of the knife plate faces outwards.

[0009] Further, the distance between the centers of the two rotary cylinders is greater than or equal to 40 cm.

[0010] Further, the connecting frame can be selected to be connected to the front end of the excavator or to the connecting frame of the skid steer loader according to needs.

[0011] Further, a push plate is integrally arranged on the inner side of the shear claw welded part. One side of the push plate is open, and the opening extends into the rotary cylinder output plate, and the other side is fixedly installed with the positioning transmission pin shaft.

[0012] The beneficial effects of the present utility model are as follows: The present utility model is a tree shear grab for an excavator. The connecting frame is fixedly connected to the box body connecting plate. Two rotating cylinders are installed inside the box body. The left output plate and the right output plate for outputting torque are respectively installed at both ends of the rotating cylinder, and the shear claw welded part is fixedly installed. By operating the machine and controlling the tree shear grab, the output ends of the left and right rotating cylinders drive the left output plate and the right output plate to rotate inwards or outwards simultaneously, realizing the synchronous inwards or outwards rotation of the left claw welded part and the right claw welded part. When rotating inwards, the left claw welded part and the right claw welded part rotate towards the central axis position simultaneously to achieve clamping. The cutting edges of the two cutting blade plates gradually approach to achieve shearing and extrusion. The present utility model enables the machine to simultaneously shear and grab trees, shortening the working time and improving the working efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is Figure 1 a top view after removing the excavator connecting frame;

[0015] Figure 3 is Figure 1 a side view;

[0016] As shown in the figure, 1 is the excavator connecting frame, 2 is the excavator connecting frame combination bolt, 3 is the left and right claw positioning bolt, 4 is the rotating cylinder fixing bolt, 5 is the box body assembly, 6 is the left and right rotating cylinder output plate fixing screw, 7 is the positioning transmission pin shaft, 8 is the left claw welded part, 9 is the cutting edge tree shear blade fixing countersunk screw, 10 is the cutting edge tree shear blade, 11 is the rotating cylinder left output plate, 12 is the rotating cylinder right output plate, 13 is the box body connecting plate, 14 is the rotating cylinder, 15 is the box body lower cover plate, 16 is the blade baffle, 17 is the right claw welded part, 18 is the push plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] As shown in the figure, the present utility model is a tree shear grab for an excavator. In this embodiment, taking an excavator as an example, it solves the problem that the excavator can simultaneously shear and grab soft trees in the wild to achieve efficient cleaning operations or efficient operations for shearing and harvesting sugarcane. The tree shear grab can grab and shear a tree trunk diameter (or sugarcane bundle) not greater than 30 cm at one time.

[0018] The excavator connecting frame 1 at the top is mechanically connected to the excavator, and the oil cylinder working oil pipe can pass through the middle hole and be connected to the excavator. The excavator connecting frame 1 is connected to the box body connecting plate 13 at the top of the lower box body assembly 5 through the excavator connecting frame combination bolt 2, thereby driving the entire new tree shear grab. According to the actual situation, the connection and installation of the excavator connecting frame 1 and the lower box body assembly 5 can be installed with a 15-degree multiple angle deflection to meet different working positions.

[0019] The lower cover plate 15 of the box body assembly 5 is detachably installed on the box body assembly, which is convenient for maintenance and installation. There are two rotary cylinders 14 inside the box body assembly 5, which are fixedly installed on the top surface of the box body assembly 5 by rotary cylinder fixing bolts 4, and the two rotary cylinders 14 are 40 cm apart.

[0020] A push plate 18 is provided inside the shear claw welded part. The push plate is C-shaped, and a positioning transmission pin shaft 7 is provided at the closed end, and both ends thereof are fixedly welded on the push plate 18, and the opening end thereof extends into the rotary cylinder output plate (including the left rotary cylinder output plate 11 and the right rotary cylinder output plate 12). The left and right rotary cylinder output plates 11 and 12 for outputting torque are installed at both the front and rear ends of the rotary cylinder 14, and there are 12 holes on each of them, which are connected and fixed by the left and right rotary cylinder output plate fixing screws 6. There is a 30-mm-wide positioning transmission groove on the side thereof, which can be fitted and installed with the positioning transmission pin shaft 7 on the left claw welded part 8 (or the right claw welded part 17). During operation, the positioning transmission pin shaft 7 plays a supporting role.

[0021] Screw holes are arranged on the upper plane of the rotary cylinder output plate, and the left claw welded part 8 (or the right claw welded part 17) can be limited and installed and fixed by the left and right claw positioning bolts 3.

[0022] On the inner side of the inner end of the left claw welded part 8 (composed of an arc-shaped plate and a knife plate), a cutting blade tree shear plate 10 against the knife plate baffle 16 is fixedly installed by 8 cutting blade tree shear plate fixing countersunk head screws 9. On the outer side of the inner end of the right claw welded part 17, another cutting blade tree shear plate 10 against the knife plate baffle 16 is fixedly installed by 8 cutting blade tree shear plate fixing countersunk head screws 9. As Figure 3 shown, the two cutting blade tree shear plates 10 installed on the same side are 5 mm apart, and the tree shear claws can be sheared.

[0023] The working principle of the present utility model:

[0024] After the tree shear grab is connected to the excavator, the excavator can be controlled to make the tree shear grab with the claw tips facing forward, the cutting-edge tree shear plates 10 horizontal and at the lowest position, close to the ground, and this working position is the working requirement position. By controlling the oil flow direction of the hydraulic working oil pipe of the tree shear grab with the excavator, the output ends of the left and right rotary cylinders 14 can drive the left output plate 11 and the right output plate 12 to rotate inward or outward simultaneously, realizing the synchronous inward or outward rotation of the left claw welded part 8 and the right claw welded part 17 (the maximum rotation angle is 110°). When rotating inward, the left claw welded part 8 and the right claw welded part 17 simultaneously deflect towards the center position to realize clamping. The cutting edges of the two cutting-edge tree shear plates 10 gradually approach to realize shearing and extrusion. For a single soft tree with a diameter of 30 cm, cutting and clamping can be realized in one operation. When rotating outward, the left claw welded part 8 and the right claw welded part 17 simultaneously deflect outward from the center position to realize opening, and the cutting edges of the two cutting-edge tree shear plates 10 gradually move away to realize placing or preparing for the next tree shear operation.

[0025] Although the embodiments of the present invention have been shown and described above, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A tree shear for an excavator, comprising a connecting frame mounted on a machine body mounting frame, characterized in that: The connecting frame (1) is connected to the box connecting plate (13) via a fixing member, and also includes a box assembly (5), the top of the box assembly being fixed with the box connecting plate (13); Two rotating oil cylinders (14) are provided inside the box assembly, symmetrically arranged along the central axis of the box assembly, and are respectively fixedly mounted on the upper cover plate of the box assembly (5) through fixing members; Rotating cylinder output plates for outputting torque are respectively installed at the front and rear ends of the rotating cylinder (14) and are fixedly connected to the shear claw welding parts; A positioning transmission groove is provided on the side of the rotary oil cylinder output plate, and is installed in cooperation with the positioning transmission pin shaft (7) on the shear claw welded part. Screw holes are arranged on the upper plane of the rotary oil cylinder output plate, and the shear claw welded part is fixedly installed by the left and right claw positioning bolts (3); The shear claw welded parts are respectively a left claw welded part (8) and a right claw welded part (17). The left claw welded part (8) and the right claw welded part (17) are arranged opposite to each other and respectively consist of an arc plate and a knife plate. One end of the arc plate is connected to the output plate of the rotating oil cylinder, and the knife plate is fixedly installed on the inner side of the other end, with the edge of the knife plate facing outwards.

2. The tree shears for excavators as claimed in claim 1, characterized in that: The distance between the centers of the two rotating cylinders is greater than or equal to 40 cm.

3. The tree shears for excavators as claimed in claim 1, characterized in that: The connecting frame can be connected to the front end of the excavator or to the connecting frame of the skid loader according to the needs.

4. The tree shears for excavators as claimed in claim 1, characterized in that: A push plate (18) is integrally provided on the inner side of the shear claw welded part. One side of the push plate (18) is open, and the opening extends into the rotating oil cylinder output plate (11). The other side of the push plate (18) is fixed with a positioning transmission pin shaft (7).

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