A paddy field weeding device

Abstract

The invention relates to a paddy field weeding device, comprising: a first weeding mechanism, the first weeding mechanism comprising two weeding pieces, the weeding pieces are strip-shaped, the two weeding pieces are distributed in a herringbone shape on the same plane, and are hingedly connected by a hinge; an elastic connecting piece, the elastic connecting piece connects the two weeding pieces, so that when the two weeding pieces are subjected to external force, the angle between them can change, and when the external force disappears, the angle between the two weeding pieces returns to the original value under the elastic force of the elastic connecting piece; a connecting component, one end of which is connected to the first weeding mechanism, and the other end is connected to a walking device; the paddy field weeding device of the invention has a simple structure and a good weeding effect, the two weeding pieces are hingedly connected, and are connected with the elastic connecting piece to realize automatic opening and closing, and can change with the row width during movement between crop rows.

Description

Technical Field

[0001] The invention relates to agricultural machinery, in particular to a paddy field weeding device. Background Art

[0002] For a long time, paddy field weeding has relied on chemical herbicides or manpower, which is labor-intensive and inefficient. In addition, the soil quality is greatly affected, the soil hardens, and the fertility decreases seriously.

[0003] In order to reduce labor intensity and the use of chemical herbicides, technicians have developed some mechanical weeding machines. For example, the Chinese patent with application number 201020590314.9 discloses a mechanism of a paddy field straddling weeding robot, including a stepping weeding device, which includes a drive box, a left crawler, a right crawler, a left transmission gear train, and a right transmission gear train. The stepping weeding device walks between the rows of paddy field seedlings through the crawlers, tramples on the weeds between the rows, and pulls out and cuts the weeds to achieve the weeding effect. The above scheme is complex, heavy, and costly, and can only weed when the rows of seedlings are very regular, but when the rows are not very regular, such as when there are curved rows, it is easy to damage the seedlings. It cannot adapt well to changes in the size of the row spacing and the changes in the row path. Summary of the invention

[0004] The object of the present invention is to provide a paddy field weeding device to solve the above-mentioned shortcomings.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a paddy field weeding device, characterized in that the paddy field weeding device comprises: a first weeding mechanism, the first weeding mechanism comprises two weeding pieces, the weeding pieces are strip-shaped, the two weeding pieces are distributed in a herringbone shape on the same plane, and are hingedly connected by a hinge; an elastic connecting piece, the elastic connecting piece connects the two weeding pieces, so that when the two weeding pieces are subjected to external force, the angle between them can change and when the external force disappears, the angle between the two weeding pieces returns to its original value under the elastic force of the elastic connecting piece; a connecting component, one end of which is connected to the first weeding mechanism, and the other end is connected to a walking device.

[0006] The optimization further comprises a plurality of weeding protrusions and / or at least one chain, wherein the plurality of weeding protrusions are distributed at the bottom of the weeding piece, and the two ends of the at least one chain are respectively connected to the ends of the two weeding pieces at the ends with a larger spacing therebetween.

[0007] Optimally, the connecting assembly includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are both vertically arranged, one end of the second connecting rod can be slidably connected to the first connecting rod along the vertical direction, and the other end of the second connecting rod is fixedly connected to the first weeding mechanism.

[0008] Preferably, the connecting assembly further comprises a sliding mechanism, the sliding direction of the sliding mechanism is left-right direction, so that the first weeding mechanism can slide in the left-right direction.

[0009] Optimally, the sliding mechanism includes a slider and a slide rail, one of the slider and the slide rail is connected to the first connecting rod, and the other is connected to the walking device.

[0010] Optimally, the paddy field weeding device further comprises a second weeding mechanism, which has the same structure as the first weeding mechanism and is symmetrically arranged in the front-rear direction.

[0011] Optimally, the two ends of the two weeding members of the first weeding mechanism with a larger spacing are respectively hingedly connected to the two ends of the two weeding members of the second weeding mechanism with a larger spacing.

[0012] Preferably, one end at which the two weeding members of the first weeding mechanism and the two weeding members of the second weeding mechanism are hinged is arc-shaped.

[0013] Optimally, the connecting assembly is connected to the walking device via a horizontal reciprocating motion mechanism, and the horizontal reciprocating motion mechanism performs horizontal reciprocating motion in the front-rear direction to drive the horizontal reciprocating movement of the first weeding mechanism and the second weeding mechanism.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The two weeding parts are hingedly connected and connected with elastic connecting parts to realize automatic opening and closing, and can change with the row width during the movement between crop rows. The weeding parts scrape up the weeds on the ground or cover them under the soil when moving on the ground.

[0016] The weeding protrusion and chain on the weeding piece further enhance the weeding effect. A sliding mechanism is provided, and when encountering a curved crop row, the weeding piece is subject to resistance from the crop, and the weeding mechanism can move left and right as the path of the crop row changes.

[0017] Since the first connecting rod and the second connecting rod are connected by sliding, in a paddy field with uneven ground, the weeding mechanism can float up and down with the ground under the action of gravity, ensuring real-time contact with the ground and not being suspended in the air and missing some areas without weeding.

[0018] The provision of the second weeding mechanism and the horizontal reciprocating motion mechanism also improves the weeding effect, and the horizontal reciprocating motion mechanism drives the weeding element to do reciprocating motion, which can greatly improve the weeding effect and efficiency, and can reduce the entanglement of weeding protrusions and dirt and weeds on the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional schematic diagram of a first embodiment of the first weeding mechanism of the paddy field weeding device of the invention;

[0020] Figure 2 A bottom view of the paddy field weeding device of Embodiment 1;

[0021] Figure 3 It is a schematic diagram of the connection between the first weeding mechanism and the connecting assembly of the first embodiment;

[0022] Figure 4 A top view of the paddy field weeding device of Example 1;

[0023] Figure 5 This is a schematic diagram of the connection between the paddy field weeding device and the walking device of Example 1;

[0024] Figure 6 A bottom view of the paddy field weeding device of Embodiment 2;

[0025] Figure 7 This is a schematic diagram of the connection between the paddy field weeding device and the walking device of Example 2.

[0026] The numbers in the figure are: 1-weeding member, 2-hinge member, 3-elastic connecting member, 4-first connecting rod, 5-second connecting rod, 6-weeding protrusion, 7-chain, 8-sliding mechanism, 9-traveling device, 10-horizontal reciprocating motion mechanism. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Example

[0029] Attached Figure 1A three-dimensional schematic diagram of an embodiment of a first weeding mechanism of a paddy field weeding device of the invention is shown. The first weeding mechanism is generally in a herringbone shape, and includes two weeding members 1 hingedly connected by a hinge 2, one end of the two weeding members 1 is hingedly connected, and can be hinged by a hinge or other hinge 2, the weeding members 1 are strip-shaped, and there is a certain angle between the two weeding members 1, and an elastic connection member 3 is arranged in the transverse direction and is located between the two weeding members 1 and is connected to the two weeding members 1 at both ends, and the elastic connection member 3 is a coil spring and a torsion bar spring.

[0030] The elastic connection member 3 between the two weeding members 1 ensures that there is always a certain angle between them when there is no lateral external force. When the weeding members 1 contact paddy field crops or other obstacles and encounter resistance, the angle between the two weeding members 1 decreases. When the resistance is removed, the angle between the two weeding members 1 is restored to its original size due to the elastic force of the elastic connection member 3, and can adapt to changes in row spacing; it will not cause major damage to paddy field crops or damage to the weeding mechanism.

[0031] Figure 2 A bottom view of a paddy field weeding device according to this embodiment is shown. Figure 4 The top view of a paddy field weeding device of this embodiment is shown. The width d of the two weeding elements 1 in the transverse direction is preferably not less than the spacing between paddy field crop rows, so as to increase the weeding coverage rate between paddy field rows.

[0032] Figure 3 The schematic diagram of the connection between the first weeding mechanism and the connecting assembly of the present embodiment is shown. The first weeding mechanism is provided with a connecting assembly, which includes a vertical first connecting rod 4 and a second connecting rod 5. One end of the second connecting rod 5 can be slidably connected to the first connecting rod 4 in the vertical direction, and the other end is connected to the first weeding mechanism. Specifically, the other end of the second connecting rod 5 is fixedly connected to the hinge 2 of the first weeding mechanism. The fixed connection between the second connecting rod 5 and the first weeding mechanism does not affect the hinge connection relationship between the two weeding members 1, that is, it does not interfere with the rotation of the two weeding members 1. The sliding connection between the first connecting rod 4 and the second connecting rod 5 can be as follows: the first connecting rod 4 is movably sleeved in the second connecting rod 5; the second connecting rod 5 is movably sleeved in the first connecting rod 4; the first connecting rod 4 and the second connecting rod 5 are slidably connected through a vertical slide rail and a slider. Of course, it is easy for those skilled in the art to understand that the connection between the first connecting rod 4 and the second connecting rod 5 can be any structure or connection form that can limit the second connecting rod 5 from sliding in the vertical direction. Since the first connecting rod 4 and the second connecting rod 5 are connected by sliding, in a paddy field with uneven ground, the first weeding mechanism can float up and down with the ground under the action of gravity, ensuring real-time contact with the ground and not being suspended in the air to miss some areas without weeding.

[0033] like Figure 2As shown, a plurality of weeding protrusions 6 are arranged at the bottom of the two weeding members 1. The weeding protrusions 6 may be in the shape of rake teeth or knifes. The plurality of weeding protrusions 6 contact the ground to scrape off the weeds.

[0034] like Figure 2 As shown, a chain 7 is arranged between the ends of the two weeding members 1 away from the hinge, and the chain 7 can be one chain as shown in the figure, or multiple chains. The chain 7 is dragged on the ground to scrape the weeds or the scraped soil covers the weeds to achieve the purpose of weeding. The length of the chain 7 is preferably greater than or equal to the row spacing of the crops in the paddy field to ensure that the chain 7 can cover the area within the crop row.

[0035] Figure 5 The schematic diagram of the connection between the paddy field weeding device and the traveling device is shown. In this embodiment, the connection assembly is optimized, and further comprises a sliding mechanism 8, wherein the sliding mechanism 8 comprises a slider and a slide rail, wherein the slider is slidably embedded in the slide rail, and the slider can slide left and right on the slide rail, wherein one of the slider and the slide rail is connected to the first connecting rod 4, and the other is connected to the traveling device 9. The sliding direction of the sliding mechanism 8 is left and right, so that the first weeding mechanism can slide in the left and right direction. When encountering a curved crop row, the weeding member 1 is subject to resistance from the crop, and the weeding mechanism can move left and right as the path of the crop row changes. Example

[0036] Figure 6 A bottom view of a paddy field weeding device of the present embodiment is shown. A paddy field weeding device of the present embodiment includes a first weeding mechanism, the first weeding mechanism includes two hingedly connected weeding parts 1, and an elastic connecting part 3 is connected between the two weeding parts 1. The first weeding mechanism is provided with a connecting assembly, and also includes a second weeding mechanism that is symmetrically arranged with the first weeding mechanism in front and back, the second weeding mechanism also includes two hingedly connected weeding parts 1, and an elastic connecting part 3 is connected between the two weeding parts 1. The two ends of the two weeding parts 1 of the first weeding mechanism with a larger spacing are respectively hingedly connected to the two ends of the two weeding parts 1 of the second weeding mechanism with a larger spacing.

[0037] The two weeding mechanisms (a first weeding mechanism and a second weeding mechanism hinged front and back) are simultaneously provided to effectively improve the weeding effect and efficiency.

[0038] Figure 7The schematic diagram of the connection between the paddy field weeding device and the traveling device of the present embodiment is shown. The connecting assembly is connected to the traveling device 9 via a horizontal reciprocating motion mechanism 10, and the horizontal reciprocating motion mechanism 10 performs horizontal reciprocating motion in the front-rear direction to drive the horizontal reciprocating movement of the first weeding mechanism and the second weeding mechanism. The horizontal reciprocating motion mechanism 10 shown in the figure is a horizontal telescopic rod, and the telescopic rod is an electric telescopic rod or a hydraulic telescopic rod, and the reciprocating motion is achieved by the extension and retraction of the telescopic rod. Obviously, those skilled in the art can easily think that other horizontal reciprocating motion mechanisms 10 in the prior art can also be used in the present embodiment, such as a cam reciprocating motion mechanism.

[0039] One end at which the two weeding members 1 of the first weeding mechanism are hinged to the two weeding members 1 of the second weeding mechanism is arc-shaped.

[0040] The walking device 9 drives the paddy field weeding device of this embodiment to move between crop rows. The first weeding mechanism and the second weeding mechanism move back and forth under the drive of the horizontal reciprocating motion mechanism 10 while moving with the walking device 9, which can greatly improve the weeding effect and efficiency and reduce the entanglement of soil and weeds on the weeding protrusion 6 and the chain 7.

[0041] One end of the weeding member 1 of the first weeding mechanism and the second weeding mechanism, which is hinged, is configured in an arc shape, which effectively improves the passing performance between the crop rows during the reciprocating motion.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A paddy field weeding device, characterized in that: The paddy field weeding device includes: A first weeding mechanism, the first weeding mechanism comprises two weeding pieces, the weeding pieces are in a strip shape, the two weeding pieces are distributed in a herringbone shape on the same plane, and are hingedly connected by a hinge piece; An elastic connecting member, wherein the elastic connecting member connects the two weeding members, so that when the two weeding members are subjected to external force, the angle between them can change and when the external force disappears, the angle between the two weeding members returns to the original value under the elastic force of the elastic connecting member; A connecting assembly, one end of which is connected to the first weeding mechanism, and the other end of which is connected to the walking device, the connecting assembly includes a first connecting rod and a second connecting rod, the first connecting rod and the second connecting rod are both vertically arranged, one end of the second connecting rod can be slidably connected to the first connecting rod in a vertical direction, and the other end of the second connecting rod is fixedly connected to the first weeding mechanism, the connecting assembly also includes a sliding mechanism, and the sliding direction of the sliding mechanism is left and right, so that the first weeding mechanism can slide in the left and right directions; A plurality of weeding protrusions and at least one chain, wherein the plurality of weeding protrusions are distributed at the bottom of the weeding piece, and two ends of the at least one chain are respectively connected to the ends of the two weeding pieces at the ends with a larger spacing; The second weeding mechanism has the same structure as the first weeding mechanism and is symmetrically arranged in the front-to-back direction. The two ends of the two weeding members of the first weeding mechanism with a larger spacing are respectively hingedly connected to the two ends of the two weeding members of the second weeding mechanism with a larger spacing.

2. A paddy field weeding device according to claim 1, characterized in that: The sliding mechanism comprises a sliding block and a sliding rail, one of the sliding block and the sliding rail is connected to the first connecting rod, and the other is connected to the walking device.

3. A paddy field weeding device according to claim 1, characterized in that: One end at which the two weeding members of the first weeding mechanism and the two weeding members of the second weeding mechanism are hinged is arc-shaped.

4. A paddy field weeding device according to claim 3, characterized in that: The connecting assembly is connected to the walking device through a horizontal reciprocating motion mechanism, and the horizontal reciprocating motion mechanism performs horizontal reciprocating motion in the front-rear direction to drive the first weeding mechanism and the second weeding mechanism to perform horizontal reciprocating motion.

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