A tree-digging shovel with a sawtooth sleeve that reciprocates horizontally along the bottom edge

Abstract

This patent provides a tree-digging shovel with a sawtooth sleeve that reciprocates horizontally along the bottom edge, mainly composed of a spherical metal shovel with a handle, a sawtooth sleeve, a reciprocating vibrator, and a transmission device. The reciprocating vibrator is fixed on the handle of the metal shovel, and the grooved sawtooth sleeve is sleeved on the bottom edge of the metal shovel. The reciprocating vibrator makes the sawtooth sleeve vibrate left and right along the bottom edge of the metal shovel through the transmission device, realizing the cutting of soil and tree roots. This tree-digging shovel has the characteristics of simple structure, light operation, high efficiency, regular tree root soil balls, and good operation safety.

Description

Technical Field

[0001] This patent belongs to the technical field of forestry machinery, and particularly relates to a tree-digging shovel. Background Art

[0002] Tree transplantation is inseparable from tree-digging machines. There are currently two existing tree-digging methods. One is a large-scale tree-digging machine, which is huge in volume, heavy in weight, and high in price. Although it has high efficiency, it is not convenient to use, has high costs, and is often restricted by the working site. The other method is manual tree-digging, and there are two types of tools used. One is a simple digging tool without power, relying entirely on physical strength, with a very high labor intensity and low efficiency. The other is a small-powered digging machine. Throughout the tree-digging process, it is necessary to hold the machine by physical strength, resulting in high physical exertion and not very high efficiency. The soil ball of the dug tree roots is irregular, affecting the survival rate of tree transplantation and posing a certain danger. With the continuous improvement of people's living conditions, the current labor employment cost is getting higher and higher. Therefore, it is particularly important to invent a tree-digging device with a simple structure, light weight, convenient use, regular soil balls of dug tree roots, high efficiency, and safe operation. Summary of the Invention

[0003] This technology provides a tree-digging shovel with a serrated sleeve that reciprocates horizontally along the bottom edge. The technical solution adopted is: a metal shovel, a reciprocating vibrator, a handle, a serrated sleeve, and a transmission device. The shovel surface of the metal shovel is bent into a spherical shape. Grooves are opened on the edge sides of the side, bottom, and top edges of the metal shovel. Pulley shafts and fixed pulleys are provided at the connecting corners of the side, bottom, and top edges of the metal shovel. The fixed pulleys can rotate freely on the pulley shafts, and small grooves are opened on the outer cylindrical surfaces of the fixed pulleys.

[0004] The handle is fixed to the upper edge of the metal shovel, and the reciprocating vibrator is fixed to the handle. The serrated sleeve is formed by stacking and fixing woodworking saw blades, with a trough-shaped cross-section and an arc shape when viewed from the bottom upwards. The serrated sleeve is sleeved on the edge of the lower bottom of the metal shovel. The reciprocating vibrator is connected to the serrated sleeve through a transmission device to drive the serrated sleeve to make horizontal reciprocating vibrations. The transmission device consists of a lever and a steel wire. The swing support point of the lever is set on the handle. One end is connected to the output shaft of the reciprocating vibrator through a pin shaft, and the other end fixes two steel wires. The two steel wires respectively pass around the grooves on the left and right sides and are connected to the connecting pins of the serrated sleeve.

[0005] The beneficial effects of this technology are: combining a metal shovel with a traditional structure with a reciprocating vibrator and a serrated sleeve, using power to drive the serrations to move horizontally under the lower edge of the metal shovel to achieve the cutting of soil and tree roots, with the characteristics of simple structure, small volume, light weight, convenient operation, high operation efficiency, regular shape of the soil ball of the tree roots, and good safety during the operation process. Brief Description of the Drawings

[0006] Figure 1It is a front structural schematic diagram of this patent.

[0007] Figure 2 It is a side structural schematic diagram of this patent.

[0008] Figure 3 It is a cross-sectional structure diagram of the serrated sleeve.

[0009] Figure 4 It is a front view schematic diagram of the tooth surface of the serrated sleeve.

[0010] Figure 5 It is Figure 1 a sectional view of part A in

[0011] In the figure: 1. Metal shovel, 2. Reciprocating vibrator, 3. Handle, 4. Serrated sleeve, 5. Lever, 6. Steel wire, 7. Fixed pulley sleeve, 8. Pulley shaft, 9. Connecting pin. Specific implementation mode

[0012] As shown in the attached drawings, it is an embodiment of a tree-digging shovel with a serrated sleeve sliding horizontally back and forth along the bottom edge, mainly including a metal shovel 1, a reciprocating vibrator 2, a handle 3, a serrated sleeve 4, a fixed pulley 7, a pulley shaft 8, a transmission device, etc. The metal shovel is welded by four curved thin steel sheets, showing a quadrilateral structure when viewed from the front, and the formed shovel surface is a spherical curved surface. Grooves are opened on the side of each steel sheet. Among them, the grooves on the steel sheets on both sides and the top face outward, and the groove on the bottom steel sheet faces inward. At the connecting corners of the four steel sheets, a fixed pulley and a pulley shaft are provided. The fixed pulley can rotate freely on the pulley shaft. Grease is applied on the pulley shaft, and the rotation resistance of the fixed pulley is very small. There is a small groove on the outer cylindrical surface of the fixed pulley, and the small groove is used to position the steel wire to prevent the steel wire from rubbing against the groove wall, as Figure 5 shown. The cross-section of the serrated sleeve is in a groove shape, and is fixed by stacking two wide woodworking saw blades and several narrow woodworking saw blades. The wide saw blades are on the outside and the narrow saw blades are on the inside. The backs of the narrow saw blades are aligned. The width of the groove is slightly larger than the thickness of the steel sheet of the metal shovel, as Figure 3As shown in the figure, when viewed from the tooth surface, the serrated sleeve is arc-shaped and has the same curvature as the bottom edge of the metal shovel. The serrated sleeve can be easily sleeved on the bottom edge steel sheet of the metal shovel. The fixing method can be welding or riveting. There is a connecting pin on the serrated sleeve. Only when the serrated sleeve is installed on the bottom edge steel sheet of the metal shovel can the connecting pin be installed to prevent the serrated sleeve from falling off, so that the serrated sleeve can only move along the bottom edge. The transmission device is composed of a lever and a steel wire. The lever is at a 90-degree right angle. The lever is swing-mounted on the handle through a support pin. One end of the lever is connected to the output shaft of the reciprocating vibrator through a pin shaft, and the other end is tied with two steel wires. The steel wires are flexible thin steel wires made of multiple strands of thin wires wound together, like the brake cable of a bicycle. The 90-degree right-angle lever can convert the vertical force of the output shaft of the reciprocating vibrator into a horizontal force on the steel wire. The two steel wires respectively bypass the grooves and fixed pulleys on both sides of the steel sheet and are then fixed to the connecting pin on the serrated sleeve. The handle is formed by welding a metal rod to the upper edge of the metal shovel. In order to facilitate the installation of the reciprocating vibrator, two metal square rods are welded parallel to the upper edge of the metal shovel at a certain distance. The distance between the two square rods is just enough to place the reciprocating vibrator. The housing of the reciprocating vibrator is fixed to the handle, and the upper end of the handle is connected by a cross bar, which not only increases the strength and stiffness of the handle but also facilitates the operation of holding the hand. The reciprocating vibrator uses a reciprocating vibration motor used in a reciprocating saw for tree digging.

[0013] When digging a tree, hold the handle of the tree-digging shovel, find the right position on the ground around the tree root, stand the tree-digging shovel on the ground, adjust the angle of the shovel, turn on the motor, and the serrated sleeve vibrates horizontally back and forth. Press down through the handle, and the soil and the tree root are cut together. The tree-digging shovel gradually penetrates into the ground. When the tree-digging shovel is completely below the ground, take out the tree-digging shovel, change to another position, and repeat the above actions. After digging a complete circle along the root of the tree, a complete root ball of the tree can be dug out.

[0014] In this embodiment, the reciprocating vibrator is of the electric type, and it can also be of the fuel engine type. The transmission device uses a lever and a steel wire, and other forms can also be used. These are just preferred solutions and are all within the protection scope of the present invention.

Claims

1. A tree-digging shovel with a sawtooth sleeve that reciprocates horizontally along the bottom edge, characterized in that: It mainly includes a metal shovel (1), a reciprocating vibrator (2), a handle (3), a serrated sleeve (4) and a transmission device. The handle (3) is fixed to the upper edge of the metal shovel (1), the reciprocating vibrator (2) is fixed to the handle (3), the serrated sleeve (4) is sleeved on the edge of the lower bottom of the metal shovel (1), and the reciprocating vibrator (2) is connected to the serrated sleeve (4) through the transmission device to drive the serrated sleeve (4) to make a horizontal reciprocating vibration; The metal shovel (1) is welded by four bent thin steel sheets. It has a quadrilateral structure when viewed from the front, and the formed shovel surface is a spherical curved surface. Grooves are opened on the side surfaces of each steel sheet. Among them, the grooves on the steel sheets on both sides and the top face outward, and the groove on the bottom steel sheet faces inward. At the connecting corners of the four steel sheets, a fixed pulley and a pulley shaft (8) are provided. The fixed pulley rotates freely on the pulley shaft (8), and there is a small groove on the outer cylindrical surface of the fixed pulley for positioning the steel wire; The transmission device consists of a lever (5) and a steel wire (6). The lever (5) is at a 90-degree right angle. The lever (5) is swing-mounted on the handle (3) through a support pin. One end of the lever (5) is connected to the output shaft of the reciprocating vibrator (2) through a pin shaft, and the other end is tied with two steel wires (6). The 90-degree right-angle lever (5) converts the vertical force of the output shaft of the reciprocating vibrator (2) into a horizontal force on the steel wire (6). The two steel wires (6) respectively bypass the grooves on the steel sheets on both sides and the fixed pulley, and are then fixed to the connecting pin (9) on the serrated sleeve (4).

2. The reciprocating horizontal sliding type tree-digging shovel with a serrated sleeve along the bottom edge according to claim 1, wherein: The shovel surface of the metal shovel (1) is bent into a spherical shape, and the upper and lower edges and the left and right side edges are all arc-shaped.

3. A tree-digging shovel with a serrated sleeve that reciprocates horizontally along the bottom edge according to claim 2, characterized in that: Grooves are opened on the edge sides of the side, bottom and top edges of the metal shovel (1).

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