Depth limiting mechanism of root cutter and root cutting device with depth limiting mechanism

Abstract

The utility model provides a root cutter depth limiting mechanism which comprises a frame, a driving device, a counter weight box and two cutting edges arranged in parallel, the counter weight box is located between the two cutting edges, sliding rods are arranged on the frame corresponding to the four corners of the counter weight box respectively, and the counter weight box is arranged in a lifting mode along the four sliding rods; the driving device is mounted at the top of the counterweight box, the driving device drives the two cutting blades to rotate, and the bottom ends of the two cutting blades extend out of the bottom surface of the frame and are used for extending into soil to implement root cutting action; the utility model further provides a root cutting device with the depth limiting mechanism. The depth limiting mechanism of the root cutter and the root cutting device with the depth limiting mechanism have the advantages that rigid collision between the root cutter and stones and thick roots can be eliminated, the root cutting mechanism is not prone to damage, and the service life is longer.

Description

Technical Field

[0001] The utility model relates to the field of agricultural machinery, in particular to a root cutting knife depth limiting mechanism and a root cutting device with the depth limiting mechanism. Background Art

[0002] Adult Populus euphratica has a well-developed root system, especially the horizontal lateral roots, which extend in all directions from the 30-60 cm soil layer and can be more than 10 meters long. Cutting the root system of Populus euphratica is a common method to promote the reproduction of root tillers and guide their growth. Studies have shown that cutting the lateral roots of Populus euphratica during a certain growth period can greatly promote the growth of its root system, promote the reproduction ability of Populus euphratica root tillers, and enhance the rate of reproduction and renewal of Populus euphratica.

[0003] There are two main existing root cutting methods, one is manual root cutting, the other is using an excavator to dig and cut roots. However, the width of the trench dug by the excavator often exceeds 50 cm, affecting the normal evaporation and water utilization of the poplar, and the excavator's bucket can easily damage the main root system of the poplar.

[0004] In view of the shortcomings of the existing excavators in root cutting, the applicant has designed a root cutting mechanism that can replace the excavator bucket. The root cutting mechanism is provided with two circular saws (root cutting knives) and a driving device for driving the two circular saws to rotate on the frame. The two circular saws are inserted into the soil to saw off the lateral roots. The distance between the two circular saws is short, which reduces the trenching width. However, in actual use, when the circular saws encounter stones or thick roots buried in the soil, the circular saws are easily damaged, affecting their service life and continuous operation.

[0005] In order to solve the above problems, people have been seeking an ideal technical solution. Summary of the invention

[0006] The utility model aims to address the deficiencies of the prior art and to provide a root cutting knife depth limiting mechanism and a root cutting device with the depth limiting mechanism, which can resolve the rigid collision between the root cutting knife and stones and thick roots, so that the root cutting mechanism is not easily damaged and has a longer service life.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a root cutting knife depth limiting mechanism, including a frame, a driving device, a counterweight box and two cutting blades arranged in parallel, the counterweight box is located in the middle of the two cutting blades, and sliding rods are respectively arranged on the frame corresponding to the four corners of the counterweight box, and the counterweight box is raised and lowered along the four sliding rods; the driving device is installed on the top of the counterweight box, and the driving device drives the two cutting blades to rotate, and the bottom ends of the two cutting blades extend out of the bottom surface of the frame and are used to extend into the soil to perform root cutting.

[0008] Based on the above, the counterweight box is provided with an inlet and outlet for counterweight blocks, and a plurality of placement grids are arranged inside the counterweight box, each of which can be provided with a counterweight block, and the counterweight of the counterweight box can be adjusted by increasing or decreasing the number of the counterweight blocks.

[0009] Based on the above, the bottom of the driving device is connected to the top of the counterweight box through a hinge shaft, and the hinge shaft is arranged parallel to the cutting blade.

[0010] Based on the above, a central rotating shaft is installed at the center of each cutting blade, and two limiting leaf springs are installed on the frame. The two limiting leaf springs are correspondingly wound above the two central rotating shafts to limit the lifting height of the central rotating shafts.

[0011] Based on the above, the driving device adopts a fuel gear motor.

[0012] The utility model also provides a root cutting device, comprising the root cutting knife depth limiting mechanism as described above.

[0013] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0014] (1) By providing the counterweight box, the "rigid installation" of the cutting blade is changed to "elastic installation". Specifically, when the cutting blade hits a stone or a thick root, the impact force overcomes the counterweight of the counterweight box, automatically lifting the cutting blade to absorb the collision force. After passing through the hard obstacle, the cutting blade automatically falls down again under the action of the counterweight of the counterweight box to continue the root cutting operation, thereby making the cutting blade less susceptible to damage and extending its service life.

[0015] (2) The counterweight box is provided with an inlet and outlet for counterweight blocks and a plurality of placement grids are arranged inside. The counterweight of the counterweight box can be adjusted by increasing or decreasing the number of counterweight blocks, so as to meet the root cutting operation requirements of sites with different hardness.

[0016] (3) The bottom of the driving device is hinged to the top of the counterweight box, which can produce a small angle deflection when one of the cutting blades collides, thereby achieving a better force unloading effect.

[0017] (4) By providing the limiting leaf spring, on the one hand, it can elastically contact with the central rotating shaft to improve the energy dissipation effect; on the other hand, it can limit the lifting height of the central rotating shaft to ensure safe operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the depth limiting mechanism of the root cutter of the utility model.

[0019] Figure 2 It is an end view of the depth limiting mechanism of the interrupted root cutter of the utility model.

[0020] In the figure: 1. frame; 2. driving device; 3. counterweight box; 4. cutting blade; 5. sliding rod; 6. hinge shaft; 7. central rotating shaft; 8. limiting leaf spring; 31. counterweight block inlet and outlet; 32. placement grid; 33. counterweight block. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described in detail below through specific implementation methods. Example 1

[0022] like Figure 1 and Figure 2 As shown, a root cutting knife depth limiting mechanism includes a frame 1, a driving device 2, a counterweight box 3 and two cutting blades 4 arranged in parallel, the cutting blade 4 is specifically a circular saw, the counterweight box 3 is located between the two cutting blades 4, and the frame 1 is provided with sliding rods 5 corresponding to the four corners of the counterweight box 4, and the counterweight box 3 is raised and lowered along the four sliding rods 5; the driving device 2 is installed on the top of the counterweight box 3, and the driving device 3 drives the two cutting blades 4 to rotate, and the bottom ends of the two cutting blades 4 extend out of the bottom surface of the frame 1 and are used to extend into the soil to perform the root cutting action.

[0023] Working principle:

[0024] During the root cutting operation, the cutting blade 4 extends into the soil, and as the root cutting mechanism moves forward, the roots buried in the soil are cut off. When the cutting blade 4 hits a stone or a thick root, the impact force overcomes the counterweight of the counterweight box 3, and the cutting blade 4 is automatically lifted to absorb the collision force. After passing through the hard obstacle, under the action of the counterweight of the counterweight box 3, the cutting blade 4 automatically falls down again to continue the root cutting operation, thereby changing the "rigid installation" of the cutting blade 4 to an "elastic installation" and extending its service life.

[0025] In order to improve the adaptability to the site, the counterweight box 3 is provided with a counterweight block inlet and outlet 31, and a plurality of placement grids 32 are arranged in the counterweight box 3. A counterweight block 33 can be placed on each of the placement grids 32. The counterweight of the counterweight box 3 can be adjusted by increasing or decreasing the number of the counterweight blocks 33 to adapt to the root cutting operation requirements of sites with different hardness.

[0026] In this embodiment, the driving device 2 adopts a fuel gear motor, using oil as energy, which is convenient for field work; in other embodiments, the driving device 2 can also adopt a driving motor. The bottom of the driving device 2 is connected to the top of the counterweight box 3 through a hinge shaft 6, and the hinge shaft 6 is arranged parallel to the cutting blade 4. When one of the cutting blades 4 collides, a small angle deflection will occur, thereby further improving the unloading effect.

[0027] In order to prevent the cutting blade 4 from moving beyond the limit position and causing damage, a central rotating shaft 7 is installed at the center of each cutting blade 4, and two limiting leaf springs 8 are installed on the frame 1. The two limiting leaf springs 8 are wound one by one above the two central rotating shafts 7 to limit the lifting height of the central rotating shaft 7 and improve safety. At the same time, the central rotating shaft 7 is in elastic contact with the limiting leaf springs 8 to further improve the energy consumption effect. Example 2

[0028] A root cutting device comprises the root cutting knife depth limiting mechanism as described in Example 1.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A root cutting knife depth limiting mechanism, characterized in that: It includes a frame, a driving device, a counterweight box and two cutting blades arranged in parallel, the counterweight box is located between the two cutting blades, and sliding rods are respectively arranged on the frame corresponding to the four corners of the counterweight box, and the counterweight box is raised and lowered along the four sliding rods; the driving device is installed on the top of the counterweight box, and the driving device drives the two cutting blades to rotate, and the bottom ends of the two cutting blades extend out of the bottom surface of the frame and are used to extend into the soil to perform root cutting.

2. The root cutting knife depth limiting mechanism according to claim 1, characterized in that: The counterweight box is provided with a counterweight block inlet and outlet, and a plurality of placement grids are arranged inside the counterweight box, each of which can be provided with a counterweight block, and the counterweight of the counterweight box can be adjusted by increasing or decreasing the number of the counterweight blocks.

3. The root cutting knife depth limiting mechanism according to claim 2 is characterized in that: The bottom of the driving device is connected to the top of the counterweight box through a hinge shaft, and the hinge shaft is arranged parallel to the cutting blade.

4. The root cutting knife depth limiting mechanism according to any one of claims 1 to 3, characterized in that: A central rotating shaft is installed at the center of each cutting blade, and two limiting leaf springs are installed on the frame. The two limiting leaf springs are correspondingly wound above the two central rotating shafts to limit the lifting height of the central rotating shafts.

5. The root cutting knife depth limiting mechanism according to claim 4, characterized in that: The driving device adopts a fuel gear motor.

6. A root cutting device, characterized in that: It comprises a root cutting knife depth limiting mechanism as described in any one of claims 1-5.

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