Self-excited vibration fruit tree root pulling device

Abstract

The utility model relates to a self-excited vibration fruit tree root pulling device which comprises a machine frame, a connecting base, a connecting rod and a root pulling shovel, and the connecting rod is connected with the connecting base through an excitation mechanism. The shock excitation mechanism comprises an inner sleeve transversely arranged on the connecting base in a penetrating mode, a pull rod transversely penetrating through the connecting rod is arranged in an inner hole of the inner sleeve in a sliding mode, a boss located in the inner sleeve is fixedly arranged on the pull rod, and a limiting protrusion located between the boss and the connecting rod and matched with the boss is fixedly arranged on the inner sleeve. The pull rod is in threaded connection with a limiting nut located on the side, away from the inner sleeve, of the connecting rod. The tree root digging device can be used for digging up rows of fruit tree roots left after an old orchard is cut down in a time-saving and labor-saving manner, can adapt to a complex working environment, and improves the working efficiency of digging the tree roots.

Description

Technical Field

[0001] This utility model relates to the field of fruit tree planting technology, and in particular to the root raising of fruit trees, specifically a self-excited vibration fruit tree root raising device. Background Technology

[0002] Orchard planting is a fruit tree planting method aimed at achieving large-scale production. After a long period of time, it inevitably faces problems such as aging trees, limited variety, and frequent diseases. This results in some orchards having high input but low yield and poor fruit quality. Problems such as old orchards being overcrowded, unreasonable early planting planning, and insufficient mechanized production conditions seriously restrict the further development of the apple industry.

[0003] With the development of modern orchard planting technology, the current stage should refer to standardized orchard planting models to renovate existing aging orchards or low-yield orchards, remove aging trees, and establish modern standardized orchards suitable for mechanization. However, at present, there is a lack of specialized root-removing devices for fruit trees in this field. When removing the roots of aging trees in orchards, excavators are generally used for digging up the roots. To solve the problems of low efficiency and lack of specialized equipment in the root-removing process, developing efficient root-removing devices has become an urgent requirement for orchard renovation and an effective way to promote the construction of mechanized orchards.

[0004] Currently, there are very few types of machinery specifically designed for fruit tree root digging, and there is no tractor-driven self-excited vibration fruit tree root digging device. In China, excavators are mostly used for root digging, which is relatively slow. Although there are specialized root digging devices for excavators, each root still needs to be dug up individually, making continuous and rapid root digging impossible. Some root digging operations take place in harsh environments; orchards may have many stones or hard soil, further increasing the difficulty of the work. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a self-excited vibration fruit tree root-lifting device, which facilitates continuous operation on the roots of rows of trees in orchards, can adapt to complex working environments, and further improves root-lifting efficiency.

[0006] This utility model is achieved through the following technical solution: a self-excited vibration fruit tree rooting device is provided, including a frame, a connecting seat fixed to the frame, and a connecting rod hinged to the frame via a horizontal shaft. The lower part of the connecting rod is fixed with a rooting shovel located below the horizontal shaft, and the upper part of the connecting rod is connected to the connecting seat via an excitation mechanism located above the horizontal shaft.

[0007] The vibration excitation mechanism includes an inner sleeve that passes laterally through a connecting seat. A pull rod that passes laterally through the inner hole of the inner sleeve is slidably mounted on the inner hole. A boss located inside the inner sleeve is fixed on the pull rod. A limiting protrusion that is located between the boss and the connecting rod and is adapted to the boss is fixed on the inner sleeve. A limiting nut located on the side of the connecting rod away from the inner sleeve is threadedly connected to the pull rod. A first limiting disc located between the connecting seat and the connecting rod is fixed on the outer surface of the inner sleeve. The limiting disc is connected to the connecting rod through a vibration spring. An elongated hole is also opened on the inner sleeve on the side of the connecting seat away from the connecting rod. The length direction of the elongated hole is consistent with the axial direction of the vibration spring. A fixing seat is fixed on the side of the connecting seat away from the connecting rod. A limiting bolt that passes radially through the elongated hole is mounted on the fixing seat.

[0008] In use, this root-removing device is mounted on the rear suspension of a tractor. A horizontal shaft forms a lever-like structure with the connecting rod. The excitation mechanism and the root-removing shovel are located on opposite sides of the horizontal shaft. The excitation spring of the excitation mechanism adapts to the resistance encountered by the root-removing shovel, achieving self-excited vibration. When the resistance encountered by the root-removing shovel increases, the upper end of the connecting rod moves in the direction of compressing the excitation spring; when the resistance encountered by the root-removing shovel decreases, the upper end of the connecting rod moves in the direction of releasing the excitation spring. As the resistance encountered by the root-removing shovel changes, the excitation spring applies forces in different directions to the connecting rod, achieving adaptive adaptation to changes in root-removing resistance.

[0009] As an optimization, an outer sleeve is provided between the first limiting plate and the connecting rod, fitted onto the inner sleeve. The outer sleeve is slidably connected to the inner sleeve, and a second limiting plate is fixed to the outer surface of the outer sleeve. The excitation spring is fitted onto the outer sleeve, with its two ends abutting against the first and second limiting plates, respectively. This optimized solution, by providing the outer sleeve, achieves mutual guidance between the inner and outer sleeves, as well as guidance for the deformation displacement of the excitation spring, ensuring the reliability of self-excitation.

[0010] As an optimization, the root-removing shovel includes a shovel body fixedly connected to a connecting rod, a blade fixedly mounted at the front end of the shovel body, and several guide rods fixedly mounted at the rear end of the shovel body. Both the shovel body and blade are arc-shaped with their openings facing upwards. The guide rods are arranged along the arc of the shovel body and extend rearwards. This optimized design, with its arc-shaped shovel body and blade, not only improves structural strength but also reduces resistance when entering the soil, thus enhancing root-removing efficiency. The guide rods provide guidance to the tree roots, and the small contact area between the guide rods and the tree roots reduces frictional resistance, allowing the roots to smoothly move upwards out of the soil.

[0011] As an optimization, the bottom rear end of the shovel body is fixed with a rearwardly extending section. The arc length of the extension section is 1 / 4 to 1 / 3 of the arc length of the shovel body, and the guide rod extends rearward from the rear end of the extension section. This optimization scheme increases the support and guidance length for tree roots by setting the extension section, which is more conducive to removing tree roots from the soil. The arc length of the extension section allows soil on both sides to pass through, reducing the resistance to root removal.

[0012] As an optimization, a mounting base is fixed to the side of the connecting seat away from the connecting rod, and the axis of the mounting base is parallel to the axis of the horizontal shaft. This optimized solution, by setting the mounting base, facilitates the connection of the hedging device to the rear suspension frame of the tractor, thereby improving the installation and disassembly efficiency of the hedging device.

[0013] As an optimization, a vertically penetrating slot is provided on the frame, and the connecting rod is located between the two side walls of the slot. The horizontal axis is a bolt passing through the two side walls of the slot and the connecting rod. This optimized design allows the connecting rod to pass through the slot in the frame, reducing the offset between the frame and the connecting rod and improving the stability of the structure.

[0014] The beneficial effects of this utility model are as follows: by setting up an excitation mechanism, the root-lifting operation can be reduced, the life of the root-lifting device can be extended, and the excitation spring is used as an energy storage element. The excitation spring stores and releases elastic potential energy to adapt to the changes in root-lifting operation resistance, thereby improving the quality of root-lifting operation. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the root-removing shovel structure of this utility model;

[0017] Figure 3 This is a side view of the frame of this utility model;

[0018] Figure 4 This is a top view of the inner sleeve of this utility model;

[0019] Figure 5 This is a schematic diagram of the excitation mechanism of this utility model;

[0020] Figure 6 This is a diagram showing the usage state of this utility model;

[0021] As shown in the figure:

[0022] 1. Limit nut, 2. Horizontal shaft, 3. Frame, 4. Inner sleeve, 5. Vibration spring, 6. Outer sleeve, 7. Washer, 8. Tie rod, 9. Rooting shovel, 10. Tractor, 11. Limit bolt, 31. Mounting seat, 32. Fixing seat, 33. Connecting seat, 34. Reinforcing rib plate, 35. Second through hole, 41. Long hole, 42. First limit plate, 91. Shovel blade, 92. Connecting rod, 93. Shovel body, 94. Guide rod, 101. Hydraulic cylinder, 102. Rear suspension frame. Detailed Implementation

[0023] To clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0024] like Figure 1 The device, a self-excited vibration root-lifting device for fruit trees, includes a frame 3, a connecting seat 33 fixed to the frame, and a connecting rod 92 hinged to the frame via a horizontal shaft 2. The connecting rod has a first through hole with a diameter of 28 mm for the horizontal shaft to pass through. A root-lifting shovel 9 is fixed to the lower part of the connecting rod below the horizontal shaft. The upper part of the connecting rod is connected to the connecting seat via an excitation mechanism located above the horizontal shaft. The horizontal shaft forms a lever structure for the connecting rod. A second through hole 35 is provided on the frame for the horizontal shaft to pass through.

[0025] The connecting seat 33 extends upward from the frame. A reinforcing rib 34 is fixed at the corner where the connecting seat 33 meets the frame 3. The reinforcing rib 34 is welded to the connecting seat and the frame to ensure structural strength. A vertical through slot is provided on the frame, opening to the right. The connecting rod is located between the two side walls of the slot. The horizontal axis is a bolt that passes through the two side walls of the slot and the connecting rod. A limiting nut 1 is provided on the bolt to prevent the bolt from falling off, ensuring the reliability of the hinge connection between the connecting rod and the frame.

[0026] The vibration mechanism includes an inner sleeve 4 that extends laterally through a connecting seat. A pull rod 8, extending laterally through a connecting rod, is slidably mounted in the inner hole of the inner sleeve. The pull rod is coaxial with the inner sleeve, and its axis is perpendicular to the axis of the transverse shaft. A boss is fixedly mounted on the pull rod 8 within the inner sleeve. A limiting protrusion, adapted to the boss, is fixedly mounted on the inner sleeve between the boss and the connecting rod. A limiting nut, located on the side of the connecting rod furthest from the inner sleeve, is threaded onto the pull rod to prevent the pull rod from moving to the left relative to the connecting rod. A washer 7 is also fitted onto the pull rod between the limiting nut and the connecting rod to increase the force application area of ​​the limiting nut on the connecting rod, reduce pressure, and prevent damage to the surface of the connecting rod. In this embodiment, a side plate is fixed to the right end of the inner sleeve, and a through hole is provided on the side plate for the pull rod to pass through. The side wall of the through hole forms the limiting protrusion. The boss is fixed to the left end of the pull rod. The side plate blocks the boss to prevent the boss from coming out of the inner sleeve. At the same time, when the pull rod moves to the right, the boss pulls the inner sleeve to move.

[0027] A first limiting plate 42 is fixedly mounted on the outer surface of the inner sleeve, located between the connecting seat and the connecting rod 92. The first limiting plate 42 and the connecting rod are connected by an excitation spring 5, which can be made of 65Mn spring steel. An elongated hole 41 is also provided on the inner sleeve, located on the side of the connecting seat away from the connecting rod. The elongated hole penetrates the inner sleeve radially, and its length direction is aligned with the axial direction of the excitation spring, providing space for the left and right movement of the inner sleeve. A fixing seat 32 is fixedly mounted on the side of the connecting seat 33 away from the connecting rod, and a limiting bolt 11 passes through the elongated hole radially through the inner sleeve on the fixing seat.

[0028] An outer sleeve 6 is provided between the first limiting plate 42 and the connecting rod 92, and is fitted onto the inner sleeve. The outer sleeve and the inner sleeve are slidably connected. A second limiting plate is fixed to the outer surface of the outer sleeve. The excitation spring 5 is fitted onto the outer sleeve, and its two ends abut against the first limiting plate and the second limiting plate, respectively. The outer sleeve and the inner sleeve are coaxial. The second limiting plate is located on the side of the connecting rod facing the connecting seat. The diameters of both the first limiting plate and the second limiting plate are larger than the inner diameter of the excitation spring. The outer sleeve and the inner sleeve prevent the excitation spring from deflecting, thus maintaining the self-excited vibration characteristics.

[0029] The root-removing shovel 9 of this embodiment includes a shovel body 93 fixedly connected to a connecting rod, a blade 91 fixedly disposed at the front end of the shovel body, and a plurality of guide rods 94 fixedly disposed at the rear end of the shovel body. Both the shovel body and the blade are arc-shaped with their openings facing upwards. The guide rods are arranged along the arc of the shovel body and extend rearwards. The thickness of the blade is 5–12 mm. As an optimized solution, this embodiment has a rearwardly extending extension section fixedly disposed at the rear end of the bottom of the shovel body. The arc length of the extension section is 1 / 4 to 1 / 3 of the arc length of the shovel body, and the guide rods extend rearwards from the rear end of the extension section.

[0030] A mounting base 31, adapted to the tractor's rear suspension frame 102, is fixedly connected to the side of the connecting seat 33 away from the connecting rod. The mounting base has a square tube structure, and its axis is parallel to the axis of the transverse shaft, facilitating connection with the tractor's rear suspension frame. Figure 6 As shown, the tractor's rear suspension is driven by a hydraulic cylinder 101 through a linkage mechanism. Its structure is an integral part of the tractor and is existing technology, so it will not be described in detail here.

[0031] In this embodiment, the root-lifting device is installed on one side of the rear suspension frame 102 of the tractor 10, taking a right-side offset installation as an example. During operation, when the tree root is located to the right rear of the tractor 10, the tractor 10 moves forward, and the hydraulic cylinder 101 rises. Through the action of the connecting rod, the frame 3 and the self-excited vibration fruit tree root-lifting device are lowered, adjusting the root-lifting shovel to tilt downwards at the front end. The blade 91 of the root-lifting shovel 9 is inserted obliquely downwards into the soil. As the tractor moves forward, the entire root-lifting device continuously penetrates deeper into the soil until the tree root is severed. The tree root rises continuously along the shovel body 93 and the guide rod 94 to the soil surface. During the root-lifting process, through the lever action of the connecting rod, the state of the excitation spring adapts to the movement of the root-lifting shovel. When the resistance encountered by the root-lifting shovel changes, the connecting rod rotates counterclockwise or clockwise around the horizontal axis, storing or releasing energy. The spring force is used to apply force to the connecting rod. In the alternating process of storing and releasing elastic potential energy, self-excited vibration is formed, realizing the adaptation to changes in the resistance of the root-lifting operation.

[0032] The self-excited vibration fruit tree root-removing device of this embodiment can perform root-removing operations on rows of felled old trees. This device can quickly and efficiently move the tree roots to the ground. After completing the root-removing operation of one row of fruit trees, the tractor 10 turns around, and the self-excited vibration root-removing device performs root-removing operations on the next row of fruit trees. The above steps are repeated, with the self-excited vibration root-removing device starting to remove the roots of each tree in the next row one by one until the root-removing operation of the next row is completed. This process is repeated until all fruit trees have been rooted. The self-excited vibration fruit tree root-removing device of this embodiment has high reliability and can adapt well to complex orchard operating environments. The self-excited vibration device reduces the resistance during root-removing operations, reduces wear on the root-removing shovel, significantly improves operational safety, and allows for rapid completion of root-removing operations.

[0033] Of course, the above description is not limited to the examples above. Technical features of this utility model not described can be implemented by or using existing technology, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of this utility model and are not intended to limit this utility model. This utility model has been described in detail with reference to preferred embodiments. Those skilled in the art should understand that any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model do not depart from the spirit of this utility model and should also fall within the protection scope of the claims of this utility model.

Claims

1. A self-excited vibration root-raising device for fruit trees, characterized in that: Includes a frame (3), a connecting seat fixed to the frame, and a connecting rod (92) hinged to the frame via a horizontal shaft (2). The lower part of the connecting rod is fixed with a root-removing shovel (9) located below the horizontal shaft, and the upper part of the connecting rod is connected to the connecting seat via a vibration mechanism located above the horizontal shaft. The excitation mechanism includes an inner sleeve (4) that passes through the connecting seat laterally. A pull rod (8) that passes through the connecting rod laterally is slidably in the inner hole of the inner sleeve. The axis of the pull rod is perpendicular to the axis of the horizontal axis. A boss located inside the inner sleeve is fixed on the pull rod (8). A limiting protrusion that is located between the boss and the connecting rod and is adapted to the boss is fixed on the inner sleeve. A limiting nut located on the side of the connecting rod away from the inner sleeve is connected to the pull rod by a thread. The outer surface of the inner sleeve is fixed with a first limiting plate (42) located between the connecting seat and the connecting rod (92). The limiting plate (42) is connected to the connecting rod by a vibration spring (5). The inner sleeve is also provided with an elongated hole (41) located on the side of the connecting seat away from the connecting rod. The length direction of the elongated hole is consistent with the axial direction of the vibration spring. A fixing seat (32) is fixed on the side of the connecting seat away from the connecting rod. A limiting bolt that passes through the elongated hole in the radial direction is provided on the fixing seat.

2. The self-excited vibration root-raising device for fruit trees according to claim 1, characterized in that: An outer sleeve (6) is provided between the first limiting plate (42) and the connecting rod (92) and is fitted on the inner sleeve. The outer sleeve is slidably connected to the inner sleeve. A second limiting plate is fixed on the outer surface of the outer sleeve. The excitation spring (5) is fitted on the outer sleeve and the two ends of the excitation spring are respectively pushed against the first limiting plate and the second limiting plate.

3. The self-excited vibration root-raising device for fruit trees according to claim 1, characterized in that: The root-removing shovel (9) includes a shovel body (93) fixed to the connecting rod, a shovel blade (91) fixed to the front end of the shovel body, and a number of guide rods (94) fixed to the rear end of the shovel body. The shovel body and the shovel blade are both arc-shaped with the opening facing upwards. Each guide rod is arranged along the arc of the shovel body and extends backwards.

4. The self-excited vibration root-raising device for fruit trees according to claim 3, characterized in that: The bottom rear end of the shovel body is fixed with a rearward extension section, the arc length of which is 1 / 4 to 1 / 3 of the arc length of the shovel body, and the guide rod extends rearward from the rear end of the extension section.

5. The self-excited vibration root-raising device for fruit trees according to claim 1, characterized in that: A mounting base (31) is fixed to the side of the connecting seat away from the connecting rod, and the axis of the mounting base is parallel to the axis of the horizontal axis.

6. The self-excited vibration root-raising device for fruit trees according to claim 1, characterized in that: The frame has a vertically penetrating slot, the connecting rod is located between the two side walls of the slot, and the horizontal axis is a bolt that passes through the two side walls of the slot and the connecting rod.

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