CN114009217B

CN114009217B - Inter-plant weeding device based on obstacle avoidance protection

Info

Publication number: CN114009217B
Application number: CN202111433935.5A
Authority: CN
Inventors: 方梁菲; 李庆
Original assignee: Anhui Agricultural University AHAU
Current assignee: Anhui Agricultural University AHAU
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-10-04
Anticipated expiration: 2041-11-29
Also published as: CN114009217A

Abstract

The invention is suitable for the field of weeding machines, and provides an inter-plant weeding device based on obstacle avoidance protection, which comprises a weeding assembly, wherein the weeding assembly is fixedly arranged at the bottom end of a lifting column, the lifting column penetrates through a supporting platform, and the lifting column is in supporting connection with the supporting platform through a vertical elastic piece; after the height of the lifting column on the supporting platform is adjusted, the lifting column is fixed through the positioning mechanism arranged on the supporting platform; the protection assembly comprises a plurality of front rods which are arranged in a straight line and a plurality of rear rods which are arranged in a straight line, and the front rods and the rear rods are staggered from front to back; the protective component is linked with the positioning mechanism. When the protection assembly of the weeding device provided by the invention encounters an obstacle, the lifting column can be released, so that the weeding assembly is lifted to a safe position behind the protection plate, and the protection effect on the weeding assembly is realized; the invention can also adjust the weeding depth of the weeding component and is flexible to use.

Description

Inter-plant weeding device based on obstacle avoidance protection

Technical Field

The invention belongs to the field of weeding machines, and particularly relates to an inter-plant weeding device based on obstacle avoidance protection.

Background

In agricultural fields, a large number of weeds are usually grown, and the presence of the weeds affects the growth of the planted plants, so that the weeds need to be removed to ensure the normal growth of the planted plants.

The weeding technology used in the agricultural production process mainly comprises chemical weeding and non-chemical weeding. Chemical weeding mainly adopts herbicides to weed, the herbicides are low in cost, convenient to use and easy to apply in a large area, but the ecological environment is seriously damaged due to the excessive use of the herbicides, and certain weeds can be promoted to generate drug resistance by using the same herbicide for a long time, so that a non-chemical weeding mode is still widely applied.

Wherein the non-chemical weeding mode is mainly realized by a weeding machine.

At present, a weeding cutter of an inter-plant weeding machine is mostly arranged at the front end of the weeding machine, the weeding cutter is driven to move forwards to cut off weeds, hard objects such as stones are usually contained in an inter-plant weeding environment, the cutter can directly contact with the hard objects such as stones when the weeding machine moves forwards, and the cutter of the weeding machine is extremely easy to damage after the cutter is contacted with the stones.

Disclosure of Invention

The invention aims to provide an inter-plant weeding device based on obstacle avoidance protection, and aims to solve the problem that a weeding blade is easily damaged when an obstacle is encountered in the traveling process of the existing weeding machine.

In order to achieve the above purpose, the present invention provides the following technical solutions.

An inter-plant weeding device based on obstacle avoidance protection comprises:

the weeding assembly is fixedly installed at the bottom end of the lifting column, the lifting column penetrates through the supporting platform, and the lifting column is in supporting connection with the supporting platform through a vertical elastic piece;

the positioning mechanism is used for adjusting the height of the lifting column on the supporting platform and fixing the lifting column through the positioning mechanism arranged on the supporting platform; the positioning mechanism comprises a first positioning piece and a second positioning piece, the first positioning piece supports and positions one side of the lifting column, and the second positioning piece supports and positions the other side of the lifting column; the first positioning piece comprises a first positioning edge block which is arranged on the first cylinder body through a first elastic piece, a first inclined surface is arranged on the first positioning edge block, a first positioning groove matched with the first positioning edge block is formed in one side of the lifting column, and the first positioning edge block is abutted in the first positioning groove under the supporting action of the first elastic piece; the second positioning piece comprises a second positioning edge block arranged on the second cylinder through a second elastic piece, and a second inclined surface is arranged on the second positioning edge block; the other side of the lifting column is provided with a plurality of second positioning grooves matched with the second positioning ridge blocks, and the second positioning ridge blocks are abutted in the second positioning grooves under the supporting action of a second elastic piece;

the protection assembly comprises a plurality of front rods which are arranged in a straight line and a plurality of rear rods which are arranged in a straight line, and the front rods and the rear rods are staggered with each other; the protection assembly is linked with the positioning mechanism.

In some embodiments, when the guard assembly moves along a first direction, the first positioning rib rotates, and when the first positioning rib rotates to the first inclined surface, the vertical elastic piece pushes the lifting column to move upwards to lift the weeding assembly;

the supporting platform bottom is still fixed be provided with the guard plate vertical elastic component promotes when the lift post shifts up, the rear of weeding subassembly lifting guard plate.

In some embodiments, when the guard assembly moves in the second direction, the second positioning rib rotates, and when the second positioning rib rotates to the second inclined surface, the positioning mechanism fixes the lifting column moving down to the required height.

In some embodiments of the present invention, the front rod and the rear rod are both fixedly installed on a transverse rod seat, two sides of the transverse rod seat are respectively height-adjustable and installed on two transverse rod bodies, the first positioning member is linked with one transverse rod body, and the second positioning member is linked with the other transverse rod body.

In some embodiments provided by the invention, the supporting screw is fixedly installed on the transverse rod seat, the supporting screw penetrates through the transverse rod body, the supporting screw penetrating through the transverse rod body is screwed and fixed through the limiting nut, after the height of the supporting screw relative to the transverse rod body is adjusted, the effect of fixing the heightened supporting screw is realized by screwing the limiting nut at a corresponding position on the supporting screw, namely, the height adjustment of the protection component is realized, wherein the front rod and the rear rod which are arranged to be staggered with each other can enable weeds to pass through a gap between the front rod and the rear rod, and meanwhile, gravels and the like can be effectively blocked.

In some embodiments of the present invention, the transverse rod and the supporting platform are supported and connected by a transverse elastic member, and when the transverse elastic member is in an unstressed state, the first inclined surface faces downward, and the second inclined surface faces downward.

In some embodiments provided by the present invention, two platform covers are symmetrically and fixedly installed on the supporting platform, the transverse elastic element includes a front supporting rod and a rear supporting rod, the front supporting rod extending into the platform cover in a penetrating and sliding manner is fixedly connected with one side of the first sliding seat included in the first positioning element, and the rear supporting rod extending into the platform cover in a penetrating and sliding manner is fixedly connected with the other side of the first sliding seat;

a front support plate is fixedly arranged at the end part of the front support rod positioned outside the platform cover, the transverse rod body is fixedly connected with the front support plate, and the front support plate is connected with the outer wall of the platform cover through a first transverse spring in a supporting way;

and a rear support plate is fixedly arranged at the end part of the rear support rod positioned outside the platform cover, and the rear support plate is connected with the outer wall of the platform cover through a second transverse spring in a supporting manner.

In some embodiments provided by the invention, the vertical elastic piece is a vertical spring, a supporting ejector rod is fixedly mounted at the top end of the lifting column, the top end of the vertical spring is connected with the supporting ejector rod, the bottom end of the vertical spring is connected with the supporting platform, and when the vertical spring is in an unstressed state, the height of the weeding assembly is the rear part of the protection plate, namely when the positioning mechanism releases the lifting column, the lifting column moves upwards to reset, so that the weeding assembly is positioned at the rear part of the protection plate, and protection is realized.

In some embodiments provided by the present invention, the first cylinder is rotatably disposed on the first sliding base, the first elastic member includes a first compression spring, a first oval sliding block is slidably disposed in the first cylinder through the first compression spring, and an end of the first positioning prism block slidably extending into the first cylinder is fixedly connected to the first oval sliding block; the first positioning piece further comprises a first toothed plate fixedly arranged in the platform cover, and the first toothed plate is positioned in the platform cover on the same side with the first direction; the outer ring of the first barrel body is fixedly provided with a first transmission gear ring meshed with the first toothed plate.

In some embodiments provided by the present invention, the second cylinder is rotatably disposed on a second sliding seat, the second sliding seat is slidably disposed in the corresponding platform cover, and the second sliding seat is in linkage connection with the transverse rod; the second cylinder is rotatably arranged on the second sliding seat, the second elastic part comprises a second compression spring, a second oval sliding block is arranged in the second cylinder in a supporting and sliding mode through the second compression spring, and the end part of the second positioning prism block, which extends into the second cylinder in a sliding mode, is fixedly connected with the second oval sliding block; the second positioning part further comprises a second toothed plate fixedly arranged in the platform cover, and the second toothed plate is positioned in the platform cover on the same side with the second direction; and a second transmission gear ring meshed with the second gear plate is fixedly arranged on the outer ring of the second cylinder.

Compared with the prior art, in the weeding device provided by the invention, when the protection component encounters an obstacle, the protection component can move to a specified position in the first direction, the first inclined surface is changed from upward to downward, the first inclined surface is further matched with the vertical elastic piece to release the lifting column, and meanwhile, the weeding component is lifted to a safe position behind the protection plate, so that the protection effect on the weeding component is realized; after the encountered obstacles are cleaned, when the weeding assembly needs to be reset to the designated height, a user manually pushes the hand push rod to enable the first slide seat and the second slide seat to move towards the second direction, at the moment, the first inclined surface of the first positioning ridge block is always upward, the inclined surface of the second positioning ridge block is changed from downward to upward, at the moment, the lifting column can be manually pressed, the lifting column is pressed down to the designated position, the hand push rod is released, at the moment, the first slide seat and the second slide seat are reset under the action of the first transverse spring and the second transverse spring, at the moment, the first inclined surface of the first positioning ridge block is kept upward, the second inclined surface of the second positioning ridge block is downward, and the first positioning ridge block in the first positioning groove and the second positioning ridge block in the second positioning groove are utilized to realize the fixation of the lifted lifting column; wherein, the adjustment to the lift post height is the adjustment to the weeding degree of weeding subassembly promptly, uses in a flexible way.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.

Fig. 1 is a schematic structural diagram of an inter-plant weeding device based on obstacle avoidance protection provided by the invention;

fig. 2 is a top view, partially in section, of an inter-plant weeding device based on obstacle avoidance protection according to the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2 at b;

fig. 4 is a schematic perspective view of a second positioning element in the inter-plant weeding device based on obstacle avoidance protection according to the present invention;

FIG. 5 is an enlarged view of a portion of FIG. 1 at a;

fig. 6 is a partial perspective view of a protection assembly in the inter-plant weeding device based on obstacle avoidance protection provided by the invention.

In the accompanying fig. 1-6: 100. a support platform; 101. a travel wheel; 102. supporting legs; 103. a push rod; 104. supporting the through hole; 105. a first guide rail; 106. a second guide rail; 107. a first slider; 108. a second slider; 109. a protection plate; 200. a platform cover; 300. a lifting column; 301. supporting the ejector rod; 302. a guide vertical rod; 303. a vertical spring; 304. a first positioning groove; 305. a support bottom bar; 306. a second positioning groove; 400. a herbicidal assembly; 401. a weeding motor; 402. a weeding blade; 500. a guard assembly; 501. a front bar; 502. a rear bar; 503. a transverse rod seat; 504. a support screw; 505. a limit nut; 506. a transverse rod body; 600. a front support rod; 601. a first lateral spring; 602. a front support plate; 700. a rear support rod; 701. a second lateral spring; 702. a rear support plate; 703. a handspike; 800. a first positioning member; 801. a first slider; 802. a first toothed plate; 803. a first cylinder; 804. a first compression spring; 805. a first drive ring gear; 806. a first oblong slider; 807. a first positioning ridge block; 900. a second positioning member; 901. a second slide carriage; 902. a second toothed plate; 903. a second cylinder; 904. a second compression spring; 905. a second drive ring gear; 906. a second oblong slider; 907. and a second positioning prism block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. Specific implementations of the present invention are described in detail below with reference to specific embodiments.

As shown in fig. 1, in a preferred embodiment provided by the present invention, an inter-plant weeding device based on obstacle avoidance protection comprises:

the weeding assembly 400 is fixedly installed at the bottom end of the lifting column 300, the lifting column 300 penetrates through the supporting platform 100, and the lifting column 300 is in supporting connection with the supporting platform 100 through a vertical elastic piece;

the positioning mechanism is used for adjusting the height of the lifting column 300 on the supporting platform 100 and fixing the lifting column by the positioning mechanism arranged on the supporting platform 100; the positioning mechanism comprises a first positioning piece 800 and a second positioning piece 900, the first positioning piece 800 supports and positions one side of the lifting column 300, and the second positioning piece 900 supports and positions the other side of the lifting column 300; the first positioning element 800 comprises a first positioning rib 807 mounted on the first cylinder 803 through a first elastic element, the first positioning rib 807 has a first inclined surface, one side of the lifting column 300 has a first positioning groove 304 matching with the first positioning rib 807, and the first positioning rib 807 is abutted in the first positioning groove 304 under the supporting action of the first elastic element; the second positioning element 900 comprises a second positioning prism 907 mounted on the second cylinder 903 through a second elastic element, and the second positioning prism 907 has a second inclined surface; the other side of the lifting column 300 has a plurality of second positioning grooves 306 matching with the second positioning blocks 907, and under the supporting action of a second elastic member, the second positioning blocks 907 are abutted against the second positioning grooves 306;

the protection assembly 500 comprises a plurality of front rods 501 arranged in a line and a plurality of rear rods 502 arranged in a line, wherein the front rods 501 and the rear rods 502 are staggered back and forth; the protection assembly 500 is linked with the positioning mechanism;

wherein when the guard assembly 500 moves in a first direction, the first positioning rib 807 rotates, and when the first positioning rib 807 rotates to the first inclined surface downward, the vertical elastic member pushes the lifting column 300 to move upward, so as to lift the weeding assembly 400;

when the shielding assembly 500 moves in the second direction, the second positioning block 907 rotates, and when the second positioning block 907 rotates to the second inclined surface, the positioning mechanism fixes the lifting column 300 which moves down to the desired height.

In the embodiment of the present invention, the second direction is a traveling direction of the weeding apparatus, the first direction is opposite to the second direction, when the weeding apparatus travels, that is, when the weeding apparatus moves along the second direction, the weeding assembly 400 adjusted to a specified depth performs weeding operation, when the protection assembly 500 encounters an obstacle, the weeding apparatus continuously traveling towards the second direction moves the protection assembly 500 relative to the support platform 100 according to the first direction, that is, the protection assembly 500 gradually approaches the support platform 100, and further drives the first positioning rib 807 to rotate, when the first positioning rib 807 rotates to face downward, the inclined surfaces of the first positioning rib 807 and the second positioning rib 907 both face downward, at this time, the lifting column 300 is pushed by the restoring force of the vertical elastic member to have a tendency of moving upward, and since the inclined surfaces of the first positioning rib 807 and the second positioning rib 907 both face downward, at this time, the lifting column 300 may move upward relative to the support platform 100, that is, the first positioning rib 807 may be removed from the first positioning groove 304 and the second positioning rib 907 may be removed from the second positioning groove 907.

Further, referring to fig. 1, in the embodiment of the present invention, the bottom of the supporting platform 100 is further fixedly provided with a protection plate 109, and when the protection assembly 500 encounters an obstacle, the vertical elastic member pushes the lifting column 300 to move upwards, so that the weeding assembly 400 is lifted, that is, the weeding assembly 400 is lifted to the rear of the protection plate 109, so as to protect the weeding assembly 400.

Referring to fig. 1 and fig. 6, in the embodiment of the present invention, the front rod 501 and the rear rod 502 are both fixedly mounted on a transverse rod seat 503, two sides of the transverse rod seat 503 are respectively height-adjustable disposed on two transverse rod bodies 506, the first positioning element 800 is linked with one transverse rod body 506, and the second positioning element 900 is linked with the other transverse rod body 506.

Further, fixed mounting has supporting screw 504 on the horizontal pole seat 503, supporting screw 504 runs through in horizontal body of rod 506, just run through in the supporting screw 504 of horizontal body of rod 506 is screwed fixedly through stop nut 505, adjusts supporting screw 504 for horizontal body of rod 506 after the height, through screwing the position that corresponds on supporting screw 504 with stop nut 505, the realization is fixed the supporting screw 504 after the increase, realize the height adjustment of protection component 500 promptly, wherein through the crisscross preceding pole 501 and the back pole 502 of each other that set up, can make the weeds pass between preceding pole 501 and the back pole 502 clearance, can also effectively block rubble etc..

Further, as shown in fig. 1, in the embodiment of the present invention, the transverse rod 506 is connected to the supporting platform 100 by a transverse elastic member, and when the transverse elastic member is in an unstressed state, the first inclined surface faces downward and the second inclined surface faces downward.

Specifically, taking the linkage between the transverse rod 506 and the first positioning element 800 as an example, as shown in fig. 1 and 5, in the embodiment of the present invention, two platform covers 200 are symmetrically and fixedly installed on the supporting platform 100, the transverse elastic element includes a front rod 600 and a rear rod 700, the front rod 600 extending into the platform cover 200 in a penetrating and sliding manner is fixedly connected with one side of a first sliding seat 801 included in the first positioning element 800, and the rear rod 700 extending into the platform cover 200 in a penetrating and sliding manner is fixedly connected with the other side of the first sliding seat 801;

a front support plate 602 is fixedly mounted at the end of the front support rod 600 located outside the platform cover 200, the transverse rod body 506 is fixedly connected with the front support plate 602, and the front support plate 602 is in supporting connection with the outer wall of the platform cover 200 through a first transverse spring 601;

a rear support plate 702 is fixedly mounted at the end of the rear support bar 700 positioned outside the platform cover 200, and the rear support plate 702 is in supporting connection with the outer wall of the platform cover 200 through a second transverse spring 701.

Furthermore, in the embodiment of the present invention, the supporting platform 100 is further provided with a first guide rail 105 and a second guide rail 106, wherein a first sliding block 107 is slidably disposed in the first guide rail 105, and the front support plate 602 is fixedly connected to the first sliding block 107; a second sliding block 108 is slidably disposed in the second guide rail 106, the rear support plate 702 is fixedly connected to the second sliding block 108, a push rod 703 is further fixedly mounted on the second sliding block 108, and the push rod 703 can manually push the transverse rod 506 to move towards the first direction, that is, push the protection assembly 500 to move towards the first direction.

Referring to fig. 1, in the embodiment of the present invention, a support leg 102 is further disposed at the bottom of the support platform 100, and a traveling wheel 101 is disposed at the bottom of the support leg 102; a push rod 103 is further arranged on one side of the top of the supporting platform 100, and the movement of the weeding device can be pushed through the push rod 103 and the traveling wheel 101; of course, the travelling wheel 101 of the weeding device can also be driven by a motor to realize travelling, so that the labor is saved.

With reference to fig. 1-2, in the embodiment of the present invention, the vertical elastic member is a vertical spring 303, the top end of the lifting column 300 is fixedly installed with a supporting post rod 301, the top end of the vertical spring 303 is connected with the supporting post rod 301, the bottom end of the vertical spring 303 is connected with the supporting platform 100, when the vertical spring 303 is in an unstressed state, the height of the weeding assembly 400 is behind the protection plate 109, that is, when the positioning mechanism releases the lifting column 300, the lifting column 300 moves upwards to return, so that the weeding assembly 400 is behind the protection plate 109, thereby achieving protection.

Referring to fig. 1, in the embodiment of the present invention, a supporting bottom rod 305 is further fixedly disposed at the bottom end of the lifting column 300, a guiding vertical rod 302 is disposed between the supporting bottom rod 305 and the supporting top rod 301, a supporting through hole 104 matching with the guiding vertical rod 302 is disposed on the supporting platform 100, and the guiding vertical rod 302 penetrates through the supporting through hole 104 to guide the displacement of the lifting column 300 in the vertical direction and prevent the lifting column 300 from rotating.

As shown in fig. 1 to 3, in the embodiment of the present invention, the first cylinder 803 is rotatably disposed on the first slide seat 801, the first elastic member includes a first compression spring 804, a first oval slider 806 is slidably disposed in the first cylinder 803 and supported by the first compression spring 804, and an end of a first positioning rib 807 slidably extending into the first cylinder 803 is fixedly connected to the first oval slider 806; the first positioning element 800 further comprises a first toothed plate 802 fixedly disposed in the platform cover 200, and the first toothed plate 802 is located in the platform cover 200 on the same side as the first direction; a first transmission gear ring 805 engaged with the first toothed plate 802 is fixedly arranged on the outer ring of the first cylinder 803.

It can be understood that when the guard assembly 500 is displaced in the first direction, the first sliding seat 801 is driven to move, and the first transmission gear ring 805 is engaged with the first toothed plate 802, only when the guard assembly 500 is displaced in the first direction to a specific position, the first cylinder 803 can rotate to an angle such that the inclined surface of the first positioning rib 807 is shifted by 180 degrees, and the first inclined surface is shifted from upward to downward.

As shown in fig. 1-2, in the embodiment of the present invention, the second cylinder 903 is rotatably disposed on a second slide 901, the second slide 901 is slidably disposed in the corresponding platform cover 200, and the second slide 901 is in linkage connection with the transverse rod 506; the second cylinder 903 is rotatably arranged on the second sliding base 901, the second elastic element comprises a second compression spring 904, a second oval sliding block 906 is arranged in the second cylinder 903 in a supporting and sliding manner through the second compression spring 904, and the end part of the second positioning prism 907, which extends into the second cylinder 903 in a sliding manner, is fixedly connected with the second oval sliding block 906; the second positioning member 900 further includes a second toothed plate 902 fixedly disposed in the platform cover 200, and the second toothed plate 902 is located in the platform cover 200 on the same side as the second direction; a second transmission gear ring 905 engaged with the second gear plate 902 is fixedly arranged on the outer ring of the second cylinder 903.

It can be understood that when the protection assembly 500 is displaced in the second direction, the second sliding base 901 is driven to move, and the second transmission gear ring 905 is engaged with the second gear plate 902, only when the protection assembly 500 is displaced in the second direction to a specified position, the second cylinder 903 can rotate to an angle such that the inclined surface of the second positioning prism 907 is changed to be 180 degrees, and the second inclined surface is changed from downward to upward.

In the embodiment of the present invention, since the protection assembly 500 is displaced to the specified position in the first direction or the second direction, the 180-degree rotation of the inclined plane can only occur, when the protection assembly 500 encounters a small resistance in the traveling process of weeding, the positioning mechanism does not release the lifting column 300, that is, in the normal weeding process, the obstruction of the wild grass to the protection assembly 500 does not affect the normal use of the weeding device, only when the protection assembly 500 encounters a large-resistance obstacle, the protection assembly 500 can be moved to the specified position in the first direction, the first inclined plane can be changed from upward to downward, and the lifting column 300 is further released by matching with the vertical elastic member, and meanwhile, the weeding assembly 400 is lifted to the safe position behind the protection plate 109, so that the protection effect of the weeding assembly 400 is achieved.

After the encountered obstacle is cleared and the weeding assembly 400 needs to be reset to a designated height, a user manually pushes the hand push rod 703 to enable the first sliding seat 801 and the second sliding seat 901 to move towards the second direction, at this time, the first inclined surface of the first positioning rib 807 is always upward, and the inclined surface of the second positioning rib 907 is changed from downward to upward, at this time, the lifting column 300 can be manually pressed, the lifting column 300 is pressed down to a designated position, the hand push rod 703 is released, at this time, under the action of the first transverse spring 601 and the second transverse spring 701, the first sliding seat 801 and the second sliding seat 901 are reset, at this time, the first inclined surface of the first positioning rib 807 is kept upward, and the second inclined surface of the second positioning rib 907 is downward, and the first inclined surface and the second inclined surface are different, the first positioning rib 807 in the first positioning groove 304 and the second positioning rib 907 in the second positioning groove 306 can be utilized to realize the fixation of the lifting column 300 after being adjusted to be high; wherein, the height adjustment of the lifting column 300 is the adjustment of the weeding depth of the weeding assembly 400, and the use is flexible.

It can be understood that when the protection assembly 500 is displaced, the first positioning element 800 and the second positioning element 900 are pushed to move in the corresponding platform cover 200, and further, the first positioning rib block 807 moves in the corresponding first positioning slot 304, and the second positioning rib block 907 moves in the corresponding second positioning slot 306, so that the first positioning slot 304 and the second positioning slot 306 in the embodiment of the present invention are both elongated channels, which provides a space for the displacement of the first positioning rib block 807 and the second positioning rib block 907.

Further, in a preferred embodiment of the present invention, the weeding assembly 400 comprises a weeding motor 401 mounted on the bottom end of the lifting column 300, and a weeding blade 402 is mounted on the output shaft of the weeding motor 401.

While embodiments of the invention have been disclosed above, it is not intended that they be limited to the applications set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.

Claims

1. The utility model provides an inter-plant weeding device based on keep away barrier protection which characterized in that, weeding device include:

the protection assembly comprises a plurality of front rods which are arranged in a line and a plurality of rear rods which are arranged in a line, and the front rods and the rear rods are staggered front and back; the protection assembly is linked with the positioning mechanism;

when the protection assembly moves along a first direction, the first positioning ridge rotates, and when the first positioning ridge rotates to the position that the first inclined surface faces downwards, the vertical elastic piece pushes the lifting column to move upwards, so that the weeding assembly is lifted; the bottom of the supporting platform is also fixedly provided with a protection plate, and when the vertical elastic piece pushes the lifting column to move upwards, the weeding assembly lifts the rear part of the protection plate;

when the protection assembly moves along a second direction, the second positioning prism block rotates, and when the second positioning prism block rotates to the second inclined surface upwards, the positioning mechanism fixes the lifting column which moves downwards to the required height;

the front rod and the rear rod are fixedly arranged on transverse rod seats, two sides of each transverse rod seat are respectively arranged on two transverse rod bodies in a height-adjustable mode, the first positioning piece is linked with one transverse rod body, and the second positioning piece is linked with the other transverse rod body;

the supporting screw rod penetrates through the transverse rod body, and the supporting screw rod penetrating through the transverse rod body is screwed and fixed through a limiting nut;

the transverse rod body is in supporting connection with the supporting platform through a transverse elastic piece, when the transverse elastic piece is in an unstressed state, the first inclined plane faces downwards, and the second inclined plane faces downwards;

the supporting platform is symmetrically and fixedly provided with two platform covers, the transverse elastic piece comprises a front support rod and a rear support rod, the front support rod penetrating and sliding into the platform covers is fixedly connected with one side of a first sliding seat included by the first positioning piece, and the rear support rod penetrating and sliding into the platform covers is fixedly connected with the other side of the first sliding seat;

a rear support plate is fixedly arranged at the end part of the rear support rod positioned outside the platform cover, and the rear support plate is in supporting connection with the outer wall of the platform cover through a second transverse spring;

the vertical elastic piece is a vertical spring, a supporting ejector rod is fixedly mounted at the top end of the lifting column, the top end of the vertical spring is connected with the supporting ejector rod, and the bottom end of the vertical spring is connected with the supporting platform;

the first cylinder is rotatably arranged on the first sliding seat, the first elastic piece comprises a first compression spring, a first oval sliding block is arranged in the first cylinder in a supporting and sliding mode through the first compression spring, and the end portion of the first positioning prism block, which extends into the first cylinder in a sliding mode, is fixedly connected with the first oval sliding block; the first positioning piece further comprises a first toothed plate fixedly arranged in the platform cover, and the first toothed plate is positioned in the platform cover on the same side with the first direction; a first transmission gear ring meshed with the first toothed plate is fixedly arranged on the outer ring of the first cylinder body;

the second cylinder is rotatably arranged on a second sliding seat, the second sliding seat is slidably arranged in the corresponding platform cover, and the second sliding seat is in linkage connection with the transverse rod body; the second cylinder is rotatably arranged on the second sliding seat, the second elastic part comprises a second compression spring, a second oval sliding block is arranged in the second cylinder in a supporting and sliding mode through the second compression spring, and the end part of the second positioning prism block, which extends into the second cylinder in a sliding mode, is fixedly connected with the second oval sliding block; the second positioning part further comprises a second toothed plate fixedly arranged in the platform cover, and the second toothed plate is positioned in the platform cover on the same side with the second direction; and a second transmission gear ring meshed with the second gear plate is fixedly arranged on the outer ring of the second cylinder.