CN114009161A

CN114009161A - Inter-plant weeding machine

Info

Publication number: CN114009161A
Application number: CN202111331784.2A
Authority: CN
Inventors: 龙章进
Original assignee: Tieniu Yunzhi Shenzhen Technology Co ltd
Current assignee: Tieniu Yunzhi Shenzhen Technology Co ltd
Priority date: 2021-11-11
Filing date: 2021-11-11
Publication date: 2022-02-08

Abstract

The invention relates to a weeding machine between plants, which comprises a land wheel, wherein a base is pivoted on the land wheel, a first telescopic rod capable of limiting and stretching up and down is arranged at the top of the base, an installation bracket is arranged on the first telescopic rod, a second telescopic rod is arranged on the installation bracket, a screw rod motor is also arranged on the installation bracket, and a fixed plate is fixedly connected on the screw rod motor; the second telescopic rod is fixedly connected with a first connecting piece, the first connecting piece is provided with a steering motor which is electrically connected with the level sensor, the steering motor is in transmission connection with a connecting rod assembly, the connecting rod assembly is provided with a third telescopic rod, and the lower end of the third telescopic rod is provided with a feeler lever; the front end fixedly connected with second connecting piece of link assembly, fixedly connected with weeding mechanism on the second connecting piece. The invention is convenient to operate, can avoid obstacles, protects crops, can automatically adjust the blade to be parallel to the ground, and improves the safety of the blade in use.

Description

Inter-plant weeding machine

Technical Field

The invention relates to the field of agricultural machinery, in particular to an inter-plant weeding machine.

Background

Agriculture is one of three major industries in human life, the yield of crops is effectively improved, and more food such as grains, vegetables and the like can be provided on limited land to meet the living needs of people. Removing weeds in crops and ensuring the absorption of water and nutrient substances by the crops is the most basic method. In the past, the weeding operation is carried out manually, the efficiency is low, mechanical weeding appears when people enter the field, the efficiency is improved, and the labor intensity of people is reduced. With the development of society, different equipment corresponds to different operation modes, and inter-plant weeding is to remove weeds as far as possible on the premise of ensuring the safety of crops. In the prior art, a cutter head and a blade are adopted for general inter-plant weeding to carry out high-speed rotation weeding, the blade is very easy to break in a scene with more gravels, danger is generated, meanwhile, the angle of the blade is fixed, the angle of the blade cannot be regulated and controlled in real time according to the condition of the ground to be weeded, the operation is inconvenient, the weeding efficiency is low, and a large amount of energy is consumed in high-speed rotation, so that the application of some scenes is limited.

Disclosure of Invention

Aiming at the existing defects, the invention provides an inter-plant weeding machine.

The technical scheme adopted by the invention for solving the technical problems is as follows: a weeding machine between plants comprises a ground wheel, wherein an inverted U-shaped base is pivoted on the ground wheel, a first telescopic rod capable of limiting and stretching up and down is arranged at the top of the base, an installation support is arranged at one end, far away from the base, of the first telescopic rod, a second telescopic rod capable of limiting and stretching is arranged on the installation support, the stretching direction of the second telescopic rod is perpendicular to the stretching direction of the first telescopic rod, a screw rod motor is further arranged on the installation support, and a fixing plate is fixedly connected to an output shaft of the screw rod motor; a first connecting piece is fixedly connected to one end, far away from the mounting bracket, of the second telescopic rod, a steering motor which is electrically connected with a horizontal sensor is mounted on the first connecting piece, the steering motor is connected with a connecting rod assembly capable of performing parallel reciprocating displacement in a transmission mode through an angular contact ball bearing, a third telescopic rod capable of stretching up and down in a limiting mode is arranged on one side, far away from the mounting bracket, of the connecting rod assembly, and a contact rod capable of rotating back and forth relative to the connecting rod assembly is arranged at the lower end of the third telescopic rod; the front end fixedly connected with second connecting piece of link assembly, the one end fixedly connected with weeding mechanism of keeping away from link assembly on the second connecting piece.

Preferably, the connecting rod assembly comprises a connecting rod and two connecting rod connecting pieces correspondingly arranged at two ends of the connecting rod, the connecting rod is pivoted with the connecting rod connecting pieces through connecting rod pivoting shafts arranged on the connecting rod connecting pieces, the connecting rod connecting piece at the front end of the connecting rod is connected with the second connecting piece, the connecting rod connecting piece at the rear end of the connecting rod is fixedly connected with a rotating shaft, the rotating shaft is in transmission connection with the steering motor through an angular contact ball bearing, the third telescopic rod is fixedly connected to the side wall of the connecting rod, and the contact rod is fixedly connected to the lower end of the third telescopic rod.

Preferably, the top of each of the two connecting rod connecting pieces is further provided with an extension spring and a double-end stud, two ends of each extension spring are correspondingly and fixedly connected to the two connecting rod connecting pieces, connecting positions of the two connecting rod connecting pieces are arranged in a diagonal manner, and two ends of each double-end stud are correspondingly pivoted on the two connecting rod connecting pieces and are pivoted on the same side.

Preferably, the first telescopic rod, the second telescopic rod and the third telescopic rod respectively comprise an inner rod and an outer rod movably sleeved outside the inner rod, a plurality of first positioning holes are formed in each inner rod at intervals along the axial direction of the inner rod, a second positioning hole is formed in one end of each outer rod adjacent to the inner rod, and the corresponding inner rod and the corresponding outer rod are connected and limited through pins which can detachably penetrate through the first positioning holes and the second positioning holes; the inner rod of the first telescopic rod is fixedly connected to the top of the base, and the outer rod of the first telescopic rod is fixedly connected with the mounting bracket at the top; the outer rod of the second telescopic rod is fixedly connected to the mounting bracket, and one end of the inner rod, far away from the outer rod, of the inner rod is connected with the first connecting piece; the upper part of the outer rod of the third telescopic rod is fixedly connected with the connecting rod assembly, and the lower end of the inner rod of the third telescopic rod is connected with the contact rod.

Preferably, the weeding mechanism comprises a main knife and an auxiliary knife with cutting edges arranged towards the touch rod in an acute angle structure, a main knife fixing plate for mounting the main knife, and an auxiliary knife fixing plate for mounting the auxiliary knife, wherein the main knife fixing plate and the auxiliary knife fixing plate are mounted on the second connecting piece at the same height, and the main knife fixing plate is located between the auxiliary knife fixing plate and the touch rod.

Preferably, the direction of the main knife towards the feeler lever forms an obtuse angle with the horizontal plane.

Preferably, the auxiliary knife extends outwards and upwards to a bending part bent in the direction away from the feeler lever at one end away from the auxiliary knife fixing plate.

Preferably, a main knife pivoting shaft is arranged on the main knife fixing plate, the main knife fixing plate is pivoted with a main knife connecting seat through the main knife pivoting shaft, the main knife is fixed on the main knife connecting seat, and a main knife torsion spring sleeved outside the main knife pivoting shaft is arranged between the main knife connecting seat and the main knife fixing plate; the auxiliary knife fixing plate is provided with an auxiliary knife pivot shaft, the auxiliary knife fixing plate is pivoted with an auxiliary knife connecting seat through the auxiliary knife pivot shaft, the auxiliary knife is fixed on the auxiliary knife connecting seat, and an auxiliary knife torsion spring sleeved outside the auxiliary knife pivot shaft is arranged between the auxiliary knife connecting seat and the auxiliary knife fixing plate.

Preferably, two sliding blocks are arranged on the two sides of the screw rod motor on the mounting bracket, sliding block through holes penetrating through the upper bottom surface and the lower bottom surface of each sliding block are formed in the two sliding blocks, and two guide posts which are correspondingly matched and slidably arranged in the two sliding block through holes are arranged on the fixing plate.

Preferably, the second connector is a flat connector bent downwardly into an arcuate configuration.

The invention has the beneficial effects that: the height of the blade is adjusted by driving the first telescopic rod to stretch by the lead screw motor, the requirements of different widths among plants in the horizontal direction are met according to the stretching of the second telescopic rod, meanwhile, the blade is adjusted to be always parallel to the ground according to the difference of the terrain by the steering motor, the steering motor is controlled according to the horizontal sensor electrically connected with the steering motor, and meanwhile, the contact rod is in parallel reciprocating displacement by the connecting rod assembly, so that the blade can avoid obstacles such as trees, stones and the like, crops can be protected, the safety of the blade in the using process is improved, the operation is convenient, and the weeding efficiency is improved by the matched application of the main blade and the auxiliary blade.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of a weeding mechanism according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a linkage assembly in accordance with an embodiment of the present invention;

part names and serial numbers in the figure: 1-land wheel 10-base 2-first telescopic rod 20-mounting bracket 21-inner rod 22-outer rod 23-pin 200-second telescopic rod 201-screw rod motor 202-fixing plate 203-sliding block 204-guide column 210-first positioning hole 220-second positioning hole 2030-sliding block through hole 3-first connecting piece 30-steering motor 31-angular contact ball bearing 4-connecting rod assembly 40-connecting rod 41-connecting rod connecting piece 400-connecting rod pivot shaft 410-rotating shaft 411-extension spring 412-double-head bolt 5-third telescopic rod 50-contact rod 6-second connecting piece 7-weeding mechanism 70-main knife 71-auxiliary knife 72-main knife fixing plate 73-auxiliary knife fixing plate 710-bent part 720-main knife shaft 721-main knife connecting seat 722-main knife torsion spring 730 pivot The auxiliary knife is pivoted with a shaft 731, an auxiliary knife connecting seat 732 and an auxiliary knife torsion spring.

Detailed Description

To more clearly illustrate the objects, technical solutions and advantages of the embodiments of the present invention, the present invention will be further described in detail with reference to the accompanying drawings and embodiments, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention. In addition, directional terms used in the present invention, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., refer to directions only as shown in the attached drawings, and are used for better and clearer explanation and understanding of the present invention, and do not indicate or imply orientation which the present invention must have, and thus, should not be construed as limiting the present invention.

Embodiments of the present invention are shown in fig. 1 to 3, and an inter-plant weeding machine comprises land wheels 1, wherein the land wheels 1 are wheels, so that the equipment can conveniently walk on the ground, different numbers of land wheels can be selected according to different uses, preferably two land wheels 1 are arranged in parallel and spaced, the two land wheels 1 increase the gravity borne by the land wheels and can also keep smooth forward movement during work, an inverted U-shaped base 10 is pivoted on the land wheels 1, the land wheels 1 are arranged in the U-shaped opening of the base 10 and then are pivoted with the base 10 through a pivoting shaft, the land wheels 1 can rotate in the U-shaped opening of the base 10, a first telescopic rod 2 capable of limiting and stretching up and down is arranged at the top of the base 10, namely the land wheels 1 are arranged at the bottom of the base 10, the first telescopic rod 2 is arranged at the top of the base 10 and is perpendicular to the top of the base 10, the stretching direction is capable of stretching up and down, the limiting enables the height position to be fixed after the extension or retraction of the first telescopic rod 2 to a certain height, so as to keep the stability of the adjusted height, a mounting bracket 20 is arranged at one end of the first telescopic rod 2 far away from the base 10, namely, the base 10 and the mounting bracket 20 correspond to two ends of the first telescopic rod 2, the height distance between the base 10 and the mounting bracket 20 can be adjusted by the extension and retraction of the first telescopic rod 2, a second telescopic rod 200 which is provided with the extension and retraction direction perpendicular to the extension and retraction direction of the first telescopic rod 2 and can limit the extension and retraction direction is installed on the mounting bracket 20, namely, the extension and retraction direction of the second telescopic rod 200 is horizontal, the position adjusted in the horizontal direction is fixed by the limiting, a lead screw motor 201 is also installed on the mounting bracket 20, a fixing plate 202 is fixedly connected to an output shaft of the lead screw motor 201, and the fixing plate 202 is used for connecting the weeding machine to a vehicle such as a tractor, the screw rod motor 201 is powered by an external power supply or the vehicle, after the screw rod motor 201 is started, the fixing plate 202 is fixedly connected with the vehicle, the screw rod motor 201 and the fixing plate 202 are not moved, the screw rod motor 201 can move up and down relative to the fixing plate 202, the mounting bracket 20 is further driven to move up and down, the mounting bracket 20 drives the first telescopic rod 2 to stretch, and therefore a height adjusting structure is formed, the height of the blade during working can be adjusted, the soil eating depth of the blade is further controlled, and the blade can be lifted when weeding is not needed; one end of the second telescopic rod 200 far away from the mounting bracket 20 is fixedly connected with a first connecting piece 3, the first connecting piece 3 is driven by the second telescopic rod 200 to move far away from or close to the horizontal direction of the mounting bracket 20, the first connecting piece 3 is provided with a steering motor 30 electrically connected with a level sensor, the level sensor can be a gyroscope arranged on a vehicle such as a tractor, a control system of the vehicle is electrically connected with the steering motor 30, when a vehicle body machine and a horizontal position generate an angle, the level sensor can send an instruction to a central control of the vehicle control system to further drive the steering motor 30 to rotate, so that the blade rotates by the same angle and tends to be parallel to the ground, the blade can be kept in a state of being parallel to the ground by regulating and controlling the steering motor 30, the weeding efficiency is improved, the steering motor 30 is in transmission connection with a connecting rod assembly 4 capable of performing parallel reciprocating displacement by utilizing an angular contact ball bearing 31, the connecting rod assembly 4 is provided with a third telescopic rod 5 which can be extended and retracted in an up-and-down limiting manner on one side far away from the mounting bracket 20, the lower end of the third telescopic rod 5 is provided with a touch rod 50 which can rotate back and forth relative to the connecting rod assembly 4, and the touch rod 50 can enable the blade to be avoided in time when the weeding machine touches crops, trees or stones, so that the crops are protected, and the blade is also protected; the front end of the connecting rod component 4 is fixedly connected with a second connecting piece 6, the second connecting piece 6 is a flat connecting piece which is bent downwards to form an arc-shaped structure, the flat structure is convenient for installing the main knife 70 and the auxiliary knife 71 on the flat structure, the connecting strength between the flat connecting piece and the connecting rod component 4 and between the flat connecting piece and the main and auxiliary knives is enhanced, the service life is prolonged, the arc-shaped structure ensures that the flat connecting piece has certain elasticity, the flat connecting piece can buffer the received force and improve the structural strength of a product, one end of the second connecting piece 6, which is far away from the connecting rod component 4, is fixedly connected with a weeding mechanism 7, so that the connecting rod component 4 and the connecting piece operate synchronously under the transmission of the steering motor 30, the connecting rod component 4 drives the second connecting piece 6 to steer, the second connecting piece 6 drives the weeding mechanism 7 to steer, the weeding mechanism 7 is ensured to be always kept in a state parallel to the ground, and the ground condition and the vegetation condition can be executed, highly fix a position after passing through lead screw motor 201 electrical control, the width satisfies the demand of different width between the horizontal direction trunk through the flexible of second telescopic link 200, and feeler lever 50 stretches into between the trunk when not bumping into the tree, and when bumping into the tree, feeler lever 50 outwards displaces, avoids the tree, has improved the security of blade in the use, convenient operation, and the cooperation of main sword 70 and auxiliary knife 71 is used and has improved herbicidal efficiency again.

In a further improvement, as shown in fig. 1 and 3, for the connecting rod assembly 4, the connecting rod assembly 4 includes a connecting rod 40 and two connecting rod connecting pieces 41 correspondingly disposed at two ends of the connecting rod 40, the connecting rod 40 is pivoted to the connecting rod connecting pieces 41 by a connecting rod pivoting shaft 400 disposed on the connecting rod connecting pieces 41, in this case, the connecting rod connecting pieces 41 can adopt U-shaped structural connecting pieces, the two connecting rod connecting pieces 41 are disposed in a structure that the U-shaped openings are opposite and in a horizontal direction, the connecting rod pivoting shaft 400 is disposed in the U-shaped openings of the connecting rod connecting pieces 41, the arrangement is convenient, the movement in a vertical direction can be avoided, the connecting rod 40 is pivoted to the connecting rod connecting pieces 41 by the connecting rod pivoting shaft 400, that is, the connecting rod 40 can rotate in a horizontal direction relative to the connecting rod connecting pieces 41, wherein the connecting rod connecting piece 41 at the front end of the connecting rod 40 is connected to the second connecting piece 6, the connecting rod connecting piece 41 at the rear end of the connecting rod 40 is fixedly connected with a rotating shaft 410, the rotating shaft 410 is in transmission connection with the steering motor 30 through an angular contact ball bearing 31, namely the rotating shaft 410 and the output shaft of the steering motor 30 are connected to the inner side and the outer side of the angular contact ball bearing 31, one inner side and the other outer side are in transmission through the angular contact ball bearing 31, when the state whether the rotating shaft is parallel to the ground is adjusted, the connecting rod 40 and the connecting rod connecting piece 41 are in transmission steering through the steering motor 30, the connecting rod 40 and the connecting rod connecting piece 41 can rotate relatively, the third telescopic rod 6 is fixedly connected to the side wall of the connecting rod 40, the touch rod 50 is fixedly connected to the lower end of the third telescopic rod 6, the third telescopic rod 6 rotates along with the connecting rod 40 relative to the two connecting rod connecting pieces 41, and then the touch rod 50 is driven to rotate towards the weeding mechanism 7, so that the touch rod 50 can rotate after touching obstacles, and then drive the connecting rod connecting piece 41 that is located the front end of connecting rod 40 and rotate, drive weeding mechanism 7 again afterwards and rotate, just avoided weeding mechanism 7's blade to touch crops or barrier, avoided the damage of blade to crops, also improved the security that the blade used when having protected crops. For the rotation of the touch bar 50, the top of the two connecting pieces is further provided with an extension spring 411 and a stud 412, two ends of the extension spring 411 are correspondingly and fixedly connected to the two link connecting pieces 41 and are arranged at the connecting positions on the two link connecting pieces 41 in a diagonal manner, two ends of the stud 412 are correspondingly pivoted on the two link connecting pieces 41 and are pivoted on the same side, so that the connecting rod assembly, the extension spring 411 and the stud 412 form a parallel displacement mechanism, the parallel displacement mechanism extends to a plant room when the tree is not touched, the parallel displacement mechanism is outwardly displaced to avoid the tree when the tree is touched, the extension spring 411 enables the touch bar 50 to be outwards horizontally displaced to an initial state after touching crops or obstacles, namely the extension spring 411 is arranged on the link connecting piece 41 at the tail end of the connecting rod 40 and is arranged at one side adjacent to the touch bar 50, the connecting rod connecting piece 41 at the front end of the connecting rod 40 is arranged at one side far away from the touch rod 50, the stud 412 is arranged at one side far away from the touch rod 50 of the connecting rod connecting piece 41, after the touch rod 50 touches an obstacle, the touch rod 50 rotates forwards, namely rotates towards the weeding mechanism 7, so that the extension spring 411 is stressed and extended, the stud 412 plays a role in supporting and guiding the rotation direction, after the obstacle is crossed, the touch rod 50 recovers to the initial state under the action of elastic force, a spring obstacle avoiding mode is adopted, the problems of high cost, large size and inconvenience in operation in the traditional hydraulic obstacle avoiding mode are solved, springs with different hardness can be adopted according to different growth cycles of crops, namely springs with different elastic forces are used for protecting young crops, corresponding springs are selected according to the conditions of the crops for operation, and the phenomenon that due to overlarge elastic force, the young crops cannot form certain thrust on the touch rod 50 to enable the touch rod to rotate and cannot form protection on the young crops is avoided The blade of the weeding mechanism 7 can be provided with certain tension through the tension springs 411 to assist weeding.

A further improvement, as shown in fig. 1, the first telescopic rod 2, the second telescopic rod 200, and the third telescopic rod 5 each include an inner rod 21 and an outer rod 22 movably sleeved outside the inner rod 21, that is, the outer rod 22 is movable relative to the inner rod 21, and forms extension and retraction through relative movement therebetween, different telescopic rods can select inner and outer rods with different specifications according to the force to be borne in use, each inner rod 21 is provided with a plurality of first positioning holes 210 at intervals along the axial direction thereof, each outer rod 22 is provided with a second positioning hole 220 at one end adjacent to the inner rod 21, the corresponding inner rod 21 and outer rod 22 are connected and limited by a pin 23 detachably penetrating through the first positioning hole 210 and the second positioning hole 220 thereon, when in use, the relative positions of the inner and outer rods are adjusted according to the required height or width, and after being adjusted to the required height or width, the second positioning hole 220 of the outer rod 22 is aligned with the first positioning hole 210 of the corresponding position on the inner rod 21, and then the pin 23 is inserted into the positioning hole and locked, so that the required position is adjusted; at this time, aiming at the positions and the functions of different telescopic rods in the whole weeding machine structure, an inner rod 21 of the first telescopic rod 2 is fixedly connected to the top of the base 10, and an outer rod 22 of the first telescopic rod is fixedly connected with the mounting bracket 20 at the top; the outer rod 22 of the second telescopic rod 200 is fixedly connected to the mounting bracket 20, and the inner rod 21 of the second telescopic rod is connected with the first connecting piece 3 at one end far away from the outer rod 22; the outer rod 22 of the third telescopic rod 5 is fixedly connected with the connecting rod assembly 4 at the upper part, and the lower end of the inner rod 21 of the third telescopic rod is connected with the contact rod 50.

In a further modification, as shown in fig. 1 and 2, for the weeding mechanism 7, the weeding mechanism 7 comprises a main knife 70 and an auxiliary knife 71, the edges of which are arranged in an acute angle structure towards the touch bar 50, a main knife fixing plate 72 for mounting the main knife 70, and an auxiliary knife fixing plate 73 for mounting the auxiliary knife 71, the main knife 70 and the auxiliary knife 71 can be changed into different sizes of blades according to the size of crops and the working environment, the main knife fixing plate 72 and the auxiliary knife fixing plate 73 are mounted on the second connecting member 6 at the same height, the main knife fixing plate 72 is located between the auxiliary knife fixing plate 73 and the touch bar 50, that is, the main knife 70 is mounted on the main knife fixing plate 72, the main knife fixing plate 72 is mounted on the second connecting member 6, the auxiliary knife 71 is mounted on the auxiliary knife fixing plate 73, the auxiliary knife fixing plate 73 is mounted on the second connecting member 6, the main and auxiliary knife fixing plates are correspondingly arranged on the front surface and the back surface of the same height position of the second connecting piece 6, the main knife 70 does not remove clean grass due to the acute angle structure between the main knife and the auxiliary knife, the auxiliary knife 71 can be supplemented from the other direction to remove the grass, and the auxiliary knife fixing plates 73 can be used for setting corresponding angles to realize the acute angle structure between the main knife and the auxiliary knife. The direction of the main knife 70 towards the feeler lever 50 forms an obtuse angle with the horizontal plane, namely, the blade of the main knife 70 is provided with an oblique angle and is inserted into the soil in a downward inclination manner in the advancing direction of the weeding machine, so that the mowing effect can be effectively realized, and the weeding efficiency is improved. The auxiliary knife 71 is outwardly and upwardly extended from one end far away from the auxiliary knife fixing plate 73 to a bent part 710 bent away from the feeler lever 50, that is, the bent part 710 and the auxiliary knife 71 form an L-shaped structure, and meanwhile, the bent part 710 is bent backwards, so that the length of the knife edge is increased, and the weeding effect is enhanced. The main cutter 70 and the auxiliary cutter 71 both bear certain resistance in the weeding process, in order to avoid damage to the blades caused by acting force borne by the main cutter 70 and the auxiliary cutter 71, a main cutter pivot shaft 720 is arranged on the main cutter fixing plate 72, the main cutter fixing plate 72 is pivoted with a main cutter connecting seat 721 through the main cutter pivot shaft 720, the main cutter 70 is fixed on the main cutter connecting seat 721, and a main cutter torsion spring 722 sleeved outside the main cutter pivot shaft 720 is arranged between the main cutter connecting seat 721 and the main cutter fixing plate 72; be provided with on the auxiliary knife fixed plate 73 and assist sword pin joint axle 730, auxiliary knife fixed plate 73 has auxiliary knife connecting seat 731 through the pin joint of auxiliary knife pin joint axle 730, auxiliary knife 71 is fixed on auxiliary knife connecting seat 731, be provided with the cover between auxiliary knife connecting seat 731 and the auxiliary knife fixed plate 73 and establish the auxiliary knife torsional spring 732 outside auxiliary knife pin joint axle 730, will rotate relative its respective fixed plate when main auxiliary knife received great effort like this, the torsional spring also cushions its effort that receives, avoids touching hard and causes the problem production of blade damage firmly.

In a further improvement, as shown in fig. 1, two sliders 203 are arranged on the mounting bracket 20 on two sides of the lead screw motor 201, slider through holes 2030 penetrating through upper and lower bottom surfaces of the sliders 203 are respectively arranged on the two sliders 203, two guide posts 204 correspondingly matched and slidably arranged in the two slider through holes 2030 are arranged on the fixing plate 202, and the setting of the guide posts 204 and the sliders 203 limits the up-and-down moving direction of the mounting bracket 20 driven by the lead screw motor 201, so that the smoothness of height adjustment is ensured.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.

Claims

1. A weeding machine between plants is characterized by comprising a land wheel, wherein an inverted U-shaped base is pivoted on the land wheel, a first telescopic rod capable of limiting and stretching up and down is arranged at the top of the base, an installation support is arranged at one end, far away from the base, of the first telescopic rod, a second telescopic rod, the stretching direction of which is perpendicular to the stretching direction of the first telescopic rod and capable of limiting and stretching, is arranged on the installation support, a screw rod motor is further arranged on the installation support, and a fixing plate is fixedly connected to an output shaft of the screw rod motor; a first connecting piece is fixedly connected to one end, far away from the mounting bracket, of the second telescopic rod, a steering motor which is electrically connected with a horizontal sensor is mounted on the first connecting piece, the steering motor is connected with a connecting rod assembly capable of performing parallel reciprocating displacement in a transmission mode through an angular contact ball bearing, a third telescopic rod capable of stretching up and down in a limiting mode is arranged on one side, far away from the mounting bracket, of the connecting rod assembly, and a contact rod capable of rotating back and forth relative to the connecting rod assembly is arranged at the lower end of the third telescopic rod; the front end fixedly connected with second connecting piece of link assembly, the one end fixedly connected with weeding mechanism of keeping away from link assembly on the second connecting piece.

2. The inter-plant weeding machine according to claim 1, wherein the link assembly comprises a link and two link connectors correspondingly arranged at two ends of the link, the link is pivoted with the link connectors through link pivoting shafts arranged on the link connectors, the link connector at the front end of the link is connected with the second connector, the link connector at the rear end of the link is fixedly connected with a rotating shaft, the rotating shaft is in transmission connection with a steering motor through an angular contact ball bearing, the third telescopic rod is fixedly connected to the side wall of the link, and the feeler lever is fixedly connected to the lower end of the third telescopic rod.

3. The inter-plant weeding machine according to claim 2, wherein an extension spring and a stud are further arranged at the tops of the two connecting rod connecting pieces, two ends of the extension spring are correspondingly and fixedly connected to the two connecting rod connecting pieces, connecting positions on the two connecting rod connecting pieces are arranged in a diagonal manner, and two ends of the stud are correspondingly pivoted on the two connecting rod connecting pieces and are pivoted on the same side.

4. The inter-plant weeding machine according to claim 1, wherein each of the first, second and third telescopic rods comprises an inner rod and an outer rod movably sleeved outside the inner rod, each inner rod is provided with a plurality of first positioning holes at intervals along the axial direction thereof, one end of each outer rod adjacent to the inner rod is provided with a second positioning hole, and the corresponding inner rod and the corresponding outer rod are connected and limited by a pin which can be disassembled and assembled and passes through the first positioning hole and the second positioning hole; the inner rod of the first telescopic rod is fixedly connected to the top of the base, and the outer rod of the first telescopic rod is fixedly connected with the mounting bracket at the top; the outer rod of the second telescopic rod is fixedly connected to the mounting bracket, and one end of the inner rod, far away from the outer rod, of the inner rod is connected with the first connecting piece; the upper part of the outer rod of the third telescopic rod is fixedly connected with the connecting rod assembly, and the lower end of the inner rod of the third telescopic rod is connected with the contact rod.

5. The inter-plant weeding machine according to claim 1, wherein the weeding mechanism comprises a main knife and an auxiliary knife, the edges of the main knife and the auxiliary knife are arranged towards the contact rod in an acute angle structure, a main knife fixing plate for mounting the main knife, and an auxiliary knife fixing plate for mounting the auxiliary knife, the main knife fixing plate and the auxiliary knife fixing plate are mounted on the second connecting piece at the same height, and the main knife fixing plate is located between the auxiliary knife fixing plate and the contact rod.

6. The inter-plant weeding machine according to claim 5, wherein the main knife forms an obtuse angle with the horizontal plane in the direction of the feeler lever.

7. The inter-plant weeding machine according to claim 5, wherein the auxiliary knife extends outward and upward from the end of the auxiliary knife fixing plate and is bent toward the direction away from the feeler lever.

8. The interplant weeding machine according to claim 5, wherein the main knife fixing plate is provided with a main knife pivot shaft, the main knife fixing plate is pivoted with a main knife connecting seat through the main knife pivot shaft, the main knife is fixed on the main knife connecting seat, and a main knife torsion spring sleeved outside the main knife pivot shaft is arranged between the main knife connecting seat and the main knife fixing plate; the auxiliary knife fixing plate is provided with an auxiliary knife pivot shaft, the auxiliary knife fixing plate is pivoted with an auxiliary knife connecting seat through the auxiliary knife pivot shaft, the auxiliary knife is fixed on the auxiliary knife connecting seat, and an auxiliary knife torsion spring sleeved outside the auxiliary knife pivot shaft is arranged between the auxiliary knife connecting seat and the auxiliary knife fixing plate.

9. A weeding machine as claimed in claim 1, wherein two sliding blocks are arranged on the mounting bracket on two sides of the screw rod motor, a sliding block through hole penetrating through the upper and lower bottom surfaces of the sliding block is arranged on each of the two sliding blocks, and two guide posts correspondingly matched and slidably arranged in the two sliding block through holes are arranged on the fixing plate.

10. The inter-plant weeding machine according to claim 1, wherein said second connecting member is a flat connecting member bent downward in an arc-shaped configuration.