Opening and closing cutter type inter-plant weeding execution component

Abstract

The invention belongs to the technical field of agricultural machinery, and discloses an opening and closing cutter type inter-plant weeding execution component which comprises an air cylinder, an air cylinder flange plate, a weeding component base, a mounted bearing, a movable connecting plate, an I-shaped connector, a movable claw wall and a weeding cutter. The I-shaped connector, the movable claw wall and the movable connecting plate are connected through the pin shafts to form an opening and closing movable mechanism, so that the weeding knives are driven to be gathered together or separated from one another, and finally the purpose of cutting weed rhizomes between plants is achieved. On the basis of the principle, the weeding width of the weeding knife can be adjusted by replacing the working stroke of the air cylinder, so that the device is suitable for agricultural implements with any operation line spacing; by increasing or reducing the mounting number of the weeding device on the weeding mechanism, the weeding device can be suitable for weeding machines with any operation line number.

Description

Technical Field

[0001] The present invention belongs to the field of intelligent agricultural machinery technology and equipment, and specifically relates to an opening and closing cutter-type inter-row weeding execution component. Background Art

[0002] As an integral part of the agricultural ecosystem, farmland weeds indirectly or directly impact the quality of agricultural production. Currently, various inter-row weed control components are widely used to control weeds in dry fields. However, existing inter-row weed control components, both domestically and internationally, are prone to missing or duplicating weeds in practice, and can also collide with and scratch crops, impacting their growth.

[0003] To overcome these drawbacks, we propose an open-and-close blade-type weeding actuator that can be installed on any agricultural machinery. During operation, the weeding actuator is mounted on a motion mechanism that guides the machine through the field. The blade-type weeding actuator then opens and closes according to instructions, avoiding crops and cutting weed roots in the soil. Summary of the Invention

[0004] The object of the present invention is to provide an opening and closing cutter-type inter-row weeding execution component that can avoid missed weeding or repeated weeding, and avoid collision and scratching of the weeding execution component with crops, and at the same time has the function of adjusting the depth of the weeding execution component into the soil during weeding operations; by increasing or decreasing the number of the present inventions installed on the weeding mechanism, the present invention can be applied to weeding machines with any number of operating rows.

[0005] The present invention designs an opening and closing cutter-type inter-row weeding execution component, comprising: a cylinder, a cylinder flange plate, a weeding component base, a seat bearing, a movable connecting plate, an I-shaped joint, a movable claw wall, and a weeding knife, wherein the cylinder and the weeding component base are respectively fixed to both sides of the cylinder flange plate through the positioning holes of the cylinder flange plate; the piston rod of the cylinder with an external thread passes through the guide hole I of the weeding component base and is connected to the guide hole II with an internal thread of the I-shaped joint; the top bearing holes of the left and right movable claw walls are respectively connected to the bearing hole I of the I-shaped joint through a pin; the left and right ends of the weeding component base are provided with bearing mounting holes, which are respectively corresponding to the mounting of two seat bearings; the bearing holes at both ends of the movable connecting plate are respectively connected to the seat bearing and the top bearing holes of the movable claw wall through a pin, so as to limit the opening and closing movement of the movable claw wall (7); the weeding knife is inserted into the limiting tube of the movable claw wall and connected with a pin.

[0006] Preferably, the movable claw wall and the weeding knife wall are provided with limiting holes I and limiting holes II of the same size and arrangement, and the length of the weeding knife wall exposed from the limiting tube can be adjusted so that the present invention can meet the requirements of different soil penetration depths in weeding operations.

[0007] Preferably, the bottoms of the cylinder and the cylinder flange plate are provided with bolt mounting holes, which are correspondingly connected to the cylinder mounting holes of the weeding component base.

[0008] Preferably, the relationship equation between the displacement distance of the piston rod of the cylinder and the opening and closing distance between the two end surfaces of the left weeding cutter head and the right weeding cutter head is:

[0009]

[0010] In this relational equation, x represents the displacement distance of the cylinder piston rod, and y represents the distance between the two end surfaces of the left weeding cutter head and the right weeding cutter head from the closed state to the separated state.

[0011] Preferably, the motion trajectory equation of the lower end point of the left weeding blade end surface is:

[0012] y=7.154lnx-9.839, x∈[0,150];

[0013] The curve equation is a Cartesian plane rectangular coordinate system constructed with the center point of the end surface of the left weeding head (83) as the origin and the extension direction of the end of the left weeding head (83) as the positive direction of the x-axis when the left weeding head (83) and the right weeding head (84) are in a closed state, and the perpendicular bisector of the line connecting the center point of the end surface of the left weeding head (83) and the center point of the end surface of the right weeding head (84) is the symmetry axis, and the motion trajectory equation of the lower end point of the end surface of the right weeding head (84) is symmetrical with this motion trajectory equation about this symmetry axis.

[0014] Preferably, the surface equation of the space where the left weeding blade surface is located is:

[0015] z=0.456x+0.689y+0.0005x 2 +0.0006y 2 ,x∈[0,150],y∈

[0016] [-4.6,4.6];

[0017] The surface equation is a right-handed Cartesian space rectangular coordinate system constructed with the center point of the end surface of the left weeding head (83) as the origin and the extension direction of the end of the left weeding head (83) as the positive direction of the x-axis. The perpendicular plane between the center point of the end surface of the left weeding head (83) and the center point of the end surface of the right weeding head (84) is the symmetry plane, and the spatial surface where the right weeding head (84) is located is symmetrical with the spatial surface of the left weeding head about the symmetry plane.

[0018] The I-shaped joint, the movable claw wall and the movable connecting plate in the present invention are connected by a pin shaft to form an opening and closing movable mechanism, thereby driving the weeding blades to gather together or separate from each other, and finally achieving the purpose of cutting the roots of weeds between plants.

[0019] Compared with the prior art, the present invention provides an opening and closing cutter-type weeding execution component, which has the following beneficial effects:

[0020] 1. By increasing or decreasing the number of the present invention installed on the weeding mechanism, the present invention can be applied to weeders with any number of working rows.

[0021] 2. Compared with the hoe-type weeding component, the present invention adopts a cutter-type; the power arm and the resistance arm of its movable claw wall are equal in length. During operation, the weeding knife only cuts the weed roots in the soil. Compared with the hoe-type weeding component that turns over the soil along the entire working path, the force it is subjected to is only the resistance to sliding and cutting the soil and weed roots, which is much smaller than the resistance experienced by the hoe-type weeding component during operation. Therefore, the present invention can withstand greater forces and has a long service life. In addition, the weeding blade can be disassembled and replaced separately, and the maintenance cost is low.

[0022] 3. Compared with the inter-row weeding components with a fixed depth, the height of the weeding execution component from the ground can be adjusted by adjusting the length of the weeding blade exposed from the movable claw wall limiting tube, thereby meeting the requirements of different soil penetration depths during weeding operations.

[0023] 4. By replacing the cylinders with different working strokes, the opening and closing distance between the two end surfaces of the left and right weeding blade heads can be adjusted, that is, the weeding width of the weeding component can be adjusted, making the present invention applicable to agricultural machinery with any working row spacing.

[0024] 5. The relationship equation between the displacement distance of the cylinder piston rod designed in the present invention and the opening and closing distance between the two end surfaces of the left and right weeding blades is:

[0025]

[0026] This relationship equation enables the cylinder to correspond to a specific opening and closing distance equation within different working strokes. Faced with different cylinder control logics, the final opening and closing distance y does not change significantly, the fault tolerance rate is higher, and the weeding effect is more stable.

[0027] 6. The trajectory equation for the lower endpoint of the distal end of the weeding blade designed in the present invention is: y = 7.154lnx - 9.839, x∈[0,150]. This trajectory equation has a gradually decreasing slope, meaning that the rate of motion of the weeding blade gradually decreases as it moves toward the limit point, thereby reducing the jerking of the weeding execution component of the present invention and extending the service life of the weeding execution component of the present invention. Furthermore, the weeding area covered by the weeding blade during the weeding operation tends to be uniform, reducing the occurrence of missed or duplicate weeding during weeding operations and further reducing damage caused by collisions or scratches of the weeding blade on crops.

[0028] 7. The spatial surface equation of the weeding blade designed in the present invention is: z = 0.456x + 0.689y + 0.0005x 2 +0.0006y 2 , x∈[0,150], y∈[-4.6,4.6], the curvature of this equation changes little, which reduces the angularity and unevenness of the weeding head surface, making the weeding head surface smoother, and making soil clods, weed residues, etc. easier to flow when they contact the weeding head surface, reducing the probability of soil clods, weed residues, etc. adhering to the weeding head surface and the soil being compacted during the weeding operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0030] Figure 2 Schematic diagram of the three-dimensional structure of the base of the weeding component of the present invention;

[0031] Figure 3 Schematic diagram of the three-dimensional structure of the I-shaped joint of the present invention;

[0032] Figure 4 Schematic diagram of the three-dimensional structure of the movable claw wall of the present invention;

[0033] Figure 5 Schematic diagram of the three-dimensional structure of the weeding knife of the present invention;

[0034] In the figure: 1. Cylinder; 2. Cylinder flange plate; 3. Weeding component base; 4. Bearing with seat; 5. Movable connecting plate; 6. I-shaped joint; 7. Movable claw wall; 8. Weeding knife; 31. Cylinder mounting hole; 32. Bearing mounting hole; 33. Guide hole I; 61. Guide hole II; 62. Bearing hole I; 71. Bearing hole II; 72. Limiting tube; 73. Limiting hole I; 74. Top bearing hole; 81. Limiting hole II; 82. Weeding knife wall; 83. Left weeding knife head; 84. Right weeding knife head. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the specification of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be noted that the terms "inside", "left", "right", "top", "bottom", "end", "both ends", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the orientations of the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting the present invention.

[0037] Please see the attached Figure 1-5 , take the weeding operation of a two-row weeder in a field with a row spacing of 600mm as an example to illustrate.

[0038] like Figure 1 As shown, the weeding blade 8 is inserted into the limiting tube 72 of the movable claw wall 7, the limiting hole II81 of the weeding blade 8 is aligned with the limiting hole I73 of the movable claw wall 7, and the weeding blade 8 is fixed to the movable claw wall 7 using a pin. When weeding is performed, the left weeding blade head 83 and the right weeding blade head 84 will both penetrate deep into the soil to cut the weed roots in the soil. When the depth of penetration into the soil of the present invention needs to be adjusted, the weeding blade wall 82 is moved up and down in the limiting tube 72, and the limiting hole I73 corresponding to the limiting hole II81 is changed, so that the depth of penetration into the soil can be changed during weeding operation.

[0039] The top bearing hole 74 of the movable claw wall 7 aligns with the bearing holes I62 at each end of the I-joint 6 and is pinned together. The bearing holes at each end of the movable link plate 5 are pinned to the seated bearing 4 and the bearing holes II71 of the movable claw wall 7, respectively, to limit the opening and closing of the weeding actuator. After the cylinder 1 is connected to the cylinder flange 2, the piston rod of the cylinder 1 passes through the guide hole I33 in the center of the weeding actuator base 3 and screws into the internally threaded guide hole II61 of the I-joint 6, securing the piston rod.

[0040] When the weeding execution component of the present invention is in operation, the direction of the piston rod of the cylinder 1 is the movement direction of the weeding machine, and the two movable claw walls 7 and the weeding blade 8 will be located on both sides of the crop planting row. According to the above description, when the weeding execution component of the present invention needs to avoid the crop seedlings, under the drive of the cylinder 1, when the cylinder piston rod moves toward the weeding component base 3, the two movable claw walls 7 on both sides of the I-shaped joint 6 will separate from each other with the I-shaped joint 6 as the reference under the limiting action of the movable connecting plate 5, driving the left weeding blade head 83 and the right weeding blade head 84 to separate from each other, realizing the movement of the end faces of the left weeding blade head 83 and the right weeding blade head 84 from 0mm to 300mm, and finally achieving the purpose of the weeding execution component of the present invention to avoid crops. On the contrary, when the cylinder piston rod moves away from the weeding component base 3, the two movable claw walls 7 on both sides of the I-shaped joint 6 will gather together with the I-shaped joint 6 as the reference under the limiting action of the movable connecting plate 5, driving the left weeding blade 83 and the right weeding blade 84 to gather together, realizing the movement of the end surfaces of the left weeding blade 83 and the right weeding blade 84 from 300mm to 0mm. Since the left weeding blade 83 and the right weeding blade 84 will penetrate deep into the soil during weeding operations, the purpose of cutting the roots of weeds between plants of the present invention is finally achieved.

[0041] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An opening and closing cutter-type weeding execution component, comprising a cylinder (1), a cylinder flange plate (2), a weeding component base (3), a seat bearing (4), a movable connecting plate (5), an I-shaped joint (6), a movable claw wall (7), and a weeding knife (8), wherein the cylinder (1) and the weeding component base (3) are respectively fixed to both sides of the cylinder flange plate (2) through positioning holes of the cylinder flange plate (2); the piston rod of the cylinder (1) with an external thread passes through a guide hole I (33) of the weeding component base (3) and is connected to the I-shaped joint (6) with an internal thread. The guide hole II (61) of the movable claw wall (7) is inserted into the guide hole II (61); the top bearing holes (74) of the left and right movable claw walls (7) are respectively connected to the bearing hole I (62) of the I-shaped joint (6) through a pin shaft; the left and right ends of the weeding component base (3) are provided with bearing mounting holes (32), and two seat bearings (4) are respectively installed correspondingly; the bearing holes at both ends of the movable connecting plate (5) are respectively connected to the seat bearing (4) and the top bearing hole (74) of the movable claw wall (7) through a pin shaft; the weeding knife (8) is inserted into the limiting tube (72) of the movable claw wall (7) and connected with a pin.

2. The opening and closing cutter-type weeding execution component according to claim 1, characterized in that: The movable claw wall (7) and the weeding knife wall (82) of the weeding knife (8) are provided with limiting holes I (73) and limiting holes II (81) of the same size and arrangement.

3. The opening and closing cutter-type weeding execution component according to claim 1, characterized in that: The bottoms of the cylinder (1) and the cylinder flange plate (2) are provided with bolt mounting holes, which are correspondingly connected to the cylinder mounting holes (31) of the weeding component base (3).

4. The opening and closing cutter-type weeding execution component according to claim 1, characterized in that: The relationship equation between the displacement distance of the piston rod of the cylinder (1) and the opening and closing distance between the two end surfaces of the left weeding blade head (83) and the right weeding blade head (84) is: In this relational equation, x represents the displacement distance of the piston rod of the cylinder (1), and y represents the opening and closing distance between the two end surfaces of the left weeding blade head (83) and the right weeding blade head (84) from the closed state to the separated state.

5. The opening and closing cutter-type weeding actuator according to claim 1, characterized in that: The motion trajectory equation of the lower end point of the end surface of the left weeding blade (83) is: y=7.154lnx-9.839, x∈[0,150]; The curve equation is a Cartesian plane rectangular coordinate system constructed with the center point of the end surface of the left weeding head (83) as the origin and the extension direction of the end of the left weeding head (83) as the positive direction of the x-axis when the left weeding head (83) and the right weeding head (84) are in a closed state, and the perpendicular bisector of the line connecting the center point of the end surface of the left weeding head (83) and the center point of the end surface of the right weeding head (84) is the symmetry axis, and the motion trajectory equation of the lower end point of the end surface of the right weeding head (84) is symmetrical with this motion trajectory equation about this symmetry axis.

6. The opening and closing cutter-type weeding actuator according to claim 1, characterized in that: The spatial surface equation of the surface of the left weeding blade (83) is: z=0.456x+0.689y+0.0005x 2 +0.0006y 2 ,x∈[0,150],y∈ [-4.6,4.6]； The surface equation is a right-handed Cartesian space rectangular coordinate system constructed with the center point of the end surface of the left weeding blade (83) as the origin and the extension direction of the end of the left weeding blade (83) as the positive direction of the x-axis. The perpendicular plane between the center point of the end surface of the left weeding blade (83) and the center point of the end surface of the right weeding blade (84) is the symmetry plane, and the space surface where the right weeding blade (84) is located is symmetrical with the space surface of the left weeding blade about the symmetry plane.

7. The opening and closing cutter-type weeding actuator according to claim 1, characterized in that: The number of the present invention installed on the weeding mechanism can be increased or decreased as needed.

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