CN110012681B

CN110012681B - Weeding device for crop planting and use method thereof

Info

Publication number: CN110012681B
Application number: CN201910359873.4A
Authority: CN
Inventors: 杨杰; 李路可; 韦乐余; 上官林建; 肖潇; 袁珂佳; 朱奕庚; 李厂; 姚林晓
Original assignee: North China University of Water Resources and Electric Power
Current assignee: North China University of Water Resources and Electric Power
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2021-09-28
Anticipated expiration: 2039-04-30
Also published as: CN110012681A

Abstract

The invention relates to the field of agricultural weeding machinery, in particular to a weeding device for crop planting and a using method thereof. This kind of weeding device for crop planting utilizes the mechanism of digging soil to dig soil and weeds together to a sieve section of thick bamboo in to utilize the clamp plate to carry out the fragmentation with weeds and soil and handle, improve the weeding effect, help to ventilate soil, prevent the caking, it is favorable to crops growth.

Description

Weeding device for crop planting and use method thereof

Technical Field

The invention relates to the field of agricultural weeding machinery, in particular to a weeding device for crop planting and a using method thereof.

Background

The crops need to be subjected to weeding operation on the planting land before planting, so that the slow growth of the crops caused by weed competition can be avoided, and the yield is reduced. The existing weeding modes are divided into two modes, manual weeding is adopted for plots with small areas, and a mechanical weeding mode is adopted for plots with large areas, so that the efficiency is improved. In the existing mechanical weeding, a cutter head is generally adopted to cut and collect grass stems above the soil surface, but the roots of weeds still remain in the soil and still have growth power, even if the grass roots are turned out in the later soil turning and ploughing process, the roots still adhere to the soil and continue to grow, and the roots and the stems are removed together in a digging mode, so that the soil at the roots is removed together, the soil fertility is reduced, the weeds carrying the soil are heavy, and the energy consumption is increased.

Disclosure of Invention

The invention aims to provide a weeding device for crop planting and a using method thereof, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a weeding device for crop planting comprises a driving box fixed on a rack, and also comprises two hanging plates fixed on the rack and two hanging frames fixed in the middle of the lower surface of the driving box, wherein the two hanging plates are symmetrically positioned below two sides of the driving box, a second chain wheel is rotationally connected on the hanging plates in a fixed shaft mode, two output shafts of the driving box are provided, each output shaft vertically penetrates through the corresponding hanging plate and can rotate relative to the hanging plate, a first chain wheel is fixed at the end of each output shaft and is connected with the second chain wheel through a chain, two side surfaces of each hanging frame are rotationally connected with a rotating ring in a fixed shaft mode, the ring surface of each rotating ring is parallel to the side surface of each hanging frame, the second chain wheels are fixedly connected with the corresponding rotating rings through a plurality of cross rods, a plurality of soil planing mechanisms for planing soil are fixed on the cross rods, screen drums are fixed on two side surfaces of each hanging frame, the screen drums are positioned in the corresponding rotating rings and share the central axis with the corresponding rotating rings, two pressing plates are connected in the screen cylinder in a sliding mode, a pull rod is fixed at the center of one surface, facing the second chain wheel, of each pressing plate, the pull rod is connected to the center of the corresponding second chain wheel in a sliding mode, and the end, located on the outer side of the second chain wheel, of the pull rod is connected with the chain through a first connecting rod.

Preferably, the cross rods are arranged along the circumferential direction of the second chain wheel at equal intervals, the cross rods are perpendicular to the round surface of the second chain wheel, the soil digging mechanisms on the cross rods are arranged along the direction of the cross rods at equal intervals, and the soil digging mechanisms on the two adjacent cross rods are staggered mutually.

Preferably, dig soil mechanism including fixing the claw of digging soil on the horizontal pole, and dig soil claw and be L shape, dig soil claw and keep away from the one end of horizontal pole for digging soil portion, and dig soil claw and seted up the spout on one section of being connected with the horizontal pole, sliding connection pressure flitch in the spout, pressure flitch fixed connection unloading piece, unloading piece and pressure flitch are located the both sides of digging soil claw respectively, and the pressure flitch can with dig the laminating of soil portion.

Preferably, one end of the second chain wheel corresponding to the screen cylinder in the direction is abutted against the second chain wheel and can rotate relatively, the screen cylinder and the second chain wheel share the central axis, and the upper part of the screen cylinder is provided with a blanking port along the axial direction of the screen cylinder.

Preferably, a plurality of through sieve holes are uniformly distributed on the side wall of the sieve barrel, a particle board is fixed at an opening of each sieve hole on the inner side wall of the sieve barrel, the cross section of the particle board is in a shape of a triangle, and the length direction of the particle board is parallel to the axial direction of the sieve barrel.

Preferably, the both sides face of sprocket two is fixed with outer axle sleeve and interior axle sleeve respectively, and the pull rod is sliding connection respectively in the inside of outer axle sleeve and interior axle sleeve, and be provided with between interior axle sleeve and the pull rod and shake the material mechanism, the dead axle rotates on the outer axle sleeve and connects the carousel, and the edge of carousel is fixed with the support, the end department of support is fixed with the fastener, the middle part of connecting rod one has been seted up the bar and has been led to the groove, the end of support passes through the fastener and connects in the groove is led to the bar, and can lead to the inslot at the bar and slide.

Preferably, the chain is hinged with a movable block, one end of the first connecting rod is hinged to one end of the pull rod located on the outer side of the screen drum, and the other end of the first connecting rod is hinged to the movable block.

Preferably, the material vibrating mechanism comprises a plurality of hammers and a ring sleeve rotationally connected to the inner shaft sleeve through a fixed shaft, the hammers are arranged at equal intervals along the circumferential direction of the pull rod, and the hammers are respectively hinged with the ring sleeve and the pull rod through a second connecting rod.

Preferably, a plurality of sliding strips are fixed on the disk surface of the pressing plate at equal intervals along the circumferential direction of the pressing plate, the sliding strips point to the circle center of the pressing plate along the radial direction of the disk surface of the pressing plate, limiting convex blocks are fixed at two ends of each sliding strip, and the sliding strips are connected with the hammer blocks in a sliding mode.

The use process of the device comprises the following steps:

the method comprises the following steps: the driving box drives the chain and the chain wheel II to rotate through the chain wheel, so that the cross rod is driven to rotate, and the soil digging mechanism digs weeds and soil into the screen drum;

step two: the chain drives the press plate to crush the soil and weeds in the screen drum through the connecting rod and discharges the soil and weeds from the screen drum;

step three: when the pressing plate crushes soil and weeds, the material vibrating mechanism vibrates the screen drum to prevent blockage.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, soil and weeds are dug into the screen cylinder by the soil digging mechanism, and the weeds and the soil are crushed by the pressing plate, so that the weeds can be thoroughly crushed together with roots and stems to inactivate the weeds and improve the weeding effect, and the soil is crushed simultaneously and the crushed weeds and the soil are mixed, so that the weeds are converted into organic fertilizer, the soil fertility is improved, the soil is crushed, the soil ventilation is facilitated, the caking is prevented, and the soil is favorable for the growth of crops;

2. according to the invention, the material vibrating mechanism is driven to vibrate the screen drum in the process of smashing weeds and soil by the pressing plate, so that the screen holes are prevented from being blocked, and the screening efficiency of the screen drum is improved.

Drawings

FIG. 1 is a first schematic view of the cross-sectional structure of the final assembly of the present invention;

FIG. 2 is a schematic view of a portion of the structure of FIG. 1;

FIG. 3 is a schematic view of the cross-sectional structure of the final assembly of the present invention;

FIG. 4 is a schematic view of the cross-sectional structure A-A of FIG. 3;

FIG. 5 is a schematic cross-sectional view of a screen cylinder according to the present invention;

FIG. 6 is an enlarged view of the structure at B in FIG. 4;

FIG. 7 is a right side view of the right side mounting plate configuration of FIG. 3;

FIG. 8 is a schematic view of a platen face structure according to the present invention;

FIG. 9 is a schematic view of the second sprocket structure of the present invention.

In the figure: 1-a drive box; 2, a first chain wheel; 3, a chain; 4-hanging a plate; 5-a cross bar; 6-a soil planing mechanism; 61-digging claw; 62-a chute; 63-a discharging block; 64-a pressure plate; 7-a pull rod; 8-pressing a plate; 81-a slide bar; 82-a limit bump; 83-a hammer block; 9-vibrating the material mechanism; 10-a screen drum; 101-particle board; 102-mesh; 11-a second chain wheel; 12-a movable block; 13-a scaffold; 131-fasteners; 14-strip-shaped through grooves; 15-connecting rod one; 16-an outer sleeve; 17-a turntable; 18-inner sleeve; 19-loop sleeve; 20-link two; 21-hammer head; 22-blanking port; 23-a hanger; 24-swivel.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by workers skilled in the art without any inventive work based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1-9, the present invention provides a technical solution: a weeding device for crop planting comprises a driving box 1 fixed on a rack, an input shaft of the driving box 1 is connected with a diesel engine or a gasoline engine, the weeding device also comprises a hanging plate 4 fixed on the rack and a hanging bracket 23 fixed in the middle of the lower surface of the driving box 1, the hanging plate 4 is provided with two hanging plates and symmetrically positioned below two sides of the driving box 1, a second chain wheel 11 is rotationally connected on the hanging plate 4 in a fixed-shaft manner, as shown in figure 9, a convex ring is fixed on one side surface of the second chain wheel 11 in a coaxial line with the second chain wheel 11 and is rotationally connected on the hanging plate 4 through the convex ring fixed-shaft manner, two output shafts of the driving box 1 are provided, the symmetric output shafts can provide stronger output torque and are beneficial to keeping stress balance at two ends of a cross rod 5 in the rotation process, each output shaft vertically penetrates through the corresponding hanging plate 4 and can rotate relative to the hanging plate 4, a first chain wheel 2 is fixed at the end of the output shaft, the chain wheel I2 is connected with the chain wheel II 11 through a chain 3, two side surfaces of the hanging bracket 23 are fixedly connected with a rotating ring 24 in a rotating mode through fixed shafts, the rotating ring 24 can be connected to the hanging bracket 23 through a turntable bearing or a ball bearing in a rotating mode, the ring surface of the rotating ring 24 is parallel to the side surface of the hanging bracket 23, the chain wheel II 11 is fixedly connected with the corresponding rotating ring 24 through a plurality of cross rods 5, a plurality of soil planing mechanisms 6 used for planing soil and weeding are fixed on the cross rods 5, two side surfaces of the hanging bracket 23 are respectively fixed with a screen cylinder 10, the screen cylinders 10 are used for screening materials, the screen cylinders 10 are located inside the corresponding rotating rings 24 and share the central axis with the corresponding rotating rings 24, two pressing plates 8 are connected in the screen cylinders 10 in a sliding mode, pull rods 7 are fixed on the centers of one surfaces, facing the chain wheel II 11, the pull rods 7 are connected to the centers of the corresponding chain wheel II 11 in a sliding mode, and the ends, located on the outer sides of the pull rods 7, are connected with the chain 3 through a connecting rod I15, the press plate 8 shears and crushes the soil and weeds in the screen cylinder 10.

In this embodiment, it is a plurality of horizontal pole 5 moves towards equidistant range along the circumference of two 11 sprockets, and horizontal pole 5 perpendicular to the round surface of two 11 sprockets, and a plurality of soil digging mechanisms 6 on horizontal pole 5 are walked to equidistant range along horizontal pole 5 to soil digging mechanisms 6 on two adjacent horizontal poles 5 misplace each other, and soil digging mechanisms 6 that misplace each other can improve soil digging efficiency under the certain circumstances of drive case 1 output.

In this embodiment, the soil planing mechanism 6 includes a soil planing claw 61 fixed on the cross bar 5, the soil planing claw 61 is L-shaped, one end of the soil planing claw 61 away from the cross bar 5 is a soil planing portion, the soil planing claw 61 is made of alloy steel and has wear-resistant characteristics, and the soil planing portion of the soil planing claw 61 can be designed into an arc curved surface shape, so that soil and weeds are prevented from adhering to the soil planing claw 61 due to dead corners, a sliding groove 62 is formed in a section where the soil planing claw 61 is connected with the cross bar 5, a pressure plate 64 is slidably connected in the sliding groove 62, the pressure plate 64 is fixedly connected with a discharging block 63, the discharging block 63 and the pressure plate 64 are respectively located at two sides of the soil planing claw 61, the pressure plate 64 can be attached to the soil planing portion, the discharging block 63 can be made of materials with large specific gravity such as cast iron, lead block or cement block, and the like, when the cross bar 5 is transferred to the top of the falling bar 22, the gravity of the discharging block 63 drives the pressure plate 64 to move down along the sliding groove 62, avoid earth and weeds adhesion in digging soil portion department to ensure that weeds fall to sieve section of thick bamboo 10 in, thereby help improving the weeding effect, and the piece 63 of unloading when the whereabouts produces the impact to horizontal pole 5 and helps shaking the earth of adhesion on digging soil claw 61 and fall all, thereby improves the ability of digging soil claw 61 next time.

In this embodiment, the one end of the two 11 directional corresponding sprockets of sieve section of thick bamboo 10 offsets and can rotate relatively with two 11 sprockets, can adopt slewing bearing or ball bearing dead axle to rotate between sieve section of thick bamboo 10 and the two 11 corresponding sprockets and be connected, also can adopt the non-contact mode of face contact or leaving suitable clearance, can ensure like this that two 11 sprockets do not have the influence to sieve section of thick bamboo 10 at the rotation in-process, and sieve section of thick bamboo 10 and two 11 sharing central axes of sprockets, the blanking mouth 22 along the axial trend of sieve section of thick bamboo 10 is seted up on the upper portion of sieve section of thick bamboo 10, when sprocket two 11 rotate, sieve section of thick bamboo 10 remains motionless, can keep blanking mouth 22 opening upwards all the time like this, avoid soil, weeds in the sieve section of thick bamboo 10 to drop.

In this embodiment, a plurality of through sieve holes 102 are uniformly distributed on the side wall of the sieve cylinder 10, a particle board 101 is fixed at an opening of the sieve holes 102 on the inner side wall of the sieve cylinder 10, the cross section of the particle board 101 is in a shape of "<", or in other shapes such as "<", "[", etc., and the length direction of the particle board 101 is parallel to the axial direction of the sieve cylinder 10, so that the pressure plate 8 can be ensured to form shearing force with the two ends of the particle board 101.

In this embodiment, an outer shaft sleeve 16 and an inner shaft sleeve 18 are respectively fixed on two side surfaces of a second sprocket 11, a pull rod 7 is respectively slidably connected inside the outer shaft sleeve 16 and the inner shaft sleeve 18, the inner shaft sleeve 18 is located on a side surface of the second sprocket 11 on which a convex ring is fixed, a material vibrating mechanism 9 is arranged between the inner shaft sleeve 18 and the pull rod 7, a fixed shaft on the outer shaft sleeve 16 is rotatably connected with a rotary disc 17, a bracket 13 is fixed at the edge of the rotary disc 17, a fastener 131 is fixed at an end of the bracket 13, a strip through groove 14 is formed in the middle of a first connecting rod 15, an end of the bracket 13 is connected in the strip through groove 14 through the fastener 131 and can slide in the strip through groove 14, the fastener 131 is of a circular ring structure, the maximum diameter of the fastener 131 is larger than the groove width of the strip through groove 14 and is used for keeping the bracket 13 and the first connecting rod 15 always connected without falling off, and the bracket 13 and the first connecting rod 15 form a lever mechanism, thereby converting the displacement track of the movable block 12 on the chain 3 into the linear reciprocating motion track of the pull rod 7.

In this embodiment, the chain 3 is hinged to a movable block 12, one end of a first connecting rod 15 is hinged to one end of the pull rod 7 located outside the screen drum 10, and the other end of the first connecting rod 15 is hinged to the movable block 12.

In this embodiment, shake material mechanism 9 and include that a plurality of tups 21 and dead axle rotate the ring cover 19 of connection on interior axle sleeve 18, and is a plurality of the tup 21 is along equidistant range of the circumference trend of pull rod 7, and tup 21 articulates connection ring cover 19 and pull rod 7 through two 20 connecting rods respectively, shakes material mechanism 9 and carries out the hammering to a sieve section of thick bamboo 10 to shake and fall and bond the soil at a sieve section of thick bamboo 10 inner wall, prevent that sieve mesh 102 from blockking up, help improving sieve section of thick bamboo 10 sieve material efficiency.

In this embodiment, a plurality of sliding strips 81 are fixed on the disk surface of the pressing plate 8 at equal intervals along the circumferential direction of the pressing plate 8, the sliding strips 81 point to the center of the pressing plate 8 along the radial direction of the disk surface of the pressing plate 8, the two ends of the sliding strips 81 are fixed with the limiting bumps 82, the sliding strips 81 are connected with the hammer blocks 83 in a sliding manner, the hammer blocks 83 on the pressing plate 8 are kept away from or close to the edges of the pressing plate 8 along the sliding strips 81 under the action of self gravity due to the rotation of the pressing plate 8, the hammer blocks 83 are made of cast iron, the hammer blocks 83 can hammer weeds and soil by utilizing the self weight of the hammer blocks when the hammer blocks slide down along the sliding strips 81, the soil can further smash the weeds, the smashing efficiency of the weeds and the soil can be improved, and the vibrating effect of the hammer blocks 83 on the sieve cylinder 10 can be improved.

The invention also comprises a use method of the weeding device for crop planting, and the weeding device for crop planting comprises the following steps when in use:

the method comprises the following steps: digging weeds: referring to fig. 1, 3 and 4, a diesel engine or a gasoline engine drives a chain wheel 2 to rotate through an output shaft of a driving box 1, the chain wheel 2 drives a connecting wheel two 11 to rotate through a chain 3, the rotation of the chain wheel two 11 drives a cross rod 5 to rotate around the central axis of the chain wheel two 11, the rotation of the cross rod 5 synchronously drives a rotating ring 24 to rotate, the rotating ring 24 and a screen cylinder 10 share the central axis, therefore, the cross rod 5 also rotates around the central axis of the screen cylinder 10, the cross rod 5 simultaneously drives a soil planing claw 61 to rotate, when the soil planing claw 61 is positioned below the screen cylinder 10, a discharging block 63 drives a pressure plate 64 to be attached to a soil planing part under the action of gravity, the soil planing claw 61 planets soil surface weeds from the root along with the rotation of the cross rod 5, the soil planing claw 61 moves towards the upper part of the screen cylinder 10 along with the rotation of the cross rod 5, and when the soil planing claw 61 moves to the upper part of the screen cylinder 10, the pressure plate 64 is driven to move downwards along a chute 62 under the action of the dead weight of the discharging block 63, weeds and soil are discharged and fall into the screen cylinder 10 from the blanking port 22, the screen cylinder 10 is kept still relative to the hanger 23, and the rotation of the second chain wheel 11, the second cross rod 5 and the rotary ring 24 has no influence on the rotation of the second chain wheel 11, the cross rod 5 and the rotary ring 24, so that the blanking port 22 is always upward in opening and is used for receiving the materials, the soil planing claw 61 moves from the upper part of the screen cylinder 10 to the lower part of the screen cylinder 10 along with the rotation of the cross rod 5, the material pressing plate 64 is driven to be attached to the soil planing part under the self-weight action of the discharging block 63 so as to carry out next soil planing, the discharging block 63 and the material pressing plate 64 discharge the weeds and the soil from the soil planing claw 61, the soil is prevented from being attached to the soil planing claw 61, the weeds are ensured to fall into the screen cylinder 10, and the weeding effect is improved;

step two: smashing weeds and soil: referring to fig. 1, 2, 3 and 7, the chain 3 drives the movable block 12 to move synchronously while moving, when the movable block 12 moves from the first sprocket 2 to the second sprocket 11, the movable block 12 continuously moves towards the second sprocket 11, as can be seen from the lever principle, one end of the first connecting rod 15 connected with the movable block 12 moves towards the second sprocket 11, one end of the first connecting rod 15 connected with the pull rod 7 drives the pull rod 7 to move towards the outside of the screen cylinder 10, while the pull rod 7 moves outwards, the corresponding press plate 8 is driven to move towards the corresponding fixed disk, i.e. the two press plates 8 are far away from each other, when the movable block 12 moves from the second sprocket 11 to the first sprocket 2, the movable block 12 continuously moves towards the second sprocket 11, as can be seen from the lever principle, one end of the first connecting rod 15 connected with the movable block 12 moves towards the second sprocket 11, one end of the first connecting rod 15 connected with the pull rod 7 drives the pull rod 7 to move towards the inside of the screen cylinder 10, the pull rod 7 moves inwards and simultaneously drives the corresponding pressing plate 8 to be far away from the corresponding fixed disc, namely the two pressing plates 8 are close to each other, the two pressing plates 8 are close to each other or far away from each other to push weeds and soil falling inside the screen cylinder 10 to move in the screen cylinder 10, as shown in figures 5 and 6, the pressing plates 8 drive the weeds and the soil to move, and simultaneously shear the weeds and the soil between the edges of the pressing plates 8 and two ends of the particle breaking plates 101, so that the weeds and the soil are broken, the broken weeds and the soil leak out of the screen holes 102 and fall on the ground, and the weeds, the weeds and the soil can be thoroughly broken together through the breaking of the weeds, the roots and the stems to be inactivated, and simultaneously break the soil, the broken weeds are mixed with the soil to be converted into organic fertilizer, the soil fertility is improved, the soil is broken, and the ventilation of the soil is facilitated, prevent caking, is beneficial to the growth of crops;

step three: the material that shakes of sieve section of thick bamboo 10 prevents blockking up: as shown in fig. 1, 2 and 3, along with the operation of the chain 3, the pull rod 7 drives the press rod 8 to continuously make reciprocating linear motion in the screen cylinder 10, and simultaneously, the included angle between the two connecting rods 20 on the hammer 21 is correspondingly increased or decreased, when the included angle between the two connecting rods 20 is decreased, the hammer 21 is pushed to move towards the inner wall of the screen cylinder 10, and the screen cylinder 10 is hammered, so that soil adhered to the inner wall of the screen cylinder 10 is shaken off, the screen holes 102 are prevented from being blocked, the screening efficiency of the screen cylinder 10 is improved, when the included angle between the two connecting rods 20 is increased, the hammer 21 is pulled to approach the pull rod 7 and to keep away from the inner wall of the screen cylinder 10, and the screen cylinder 10 is not vibrated;

referring to fig. 7 and 8, in the process that the chain 3 drives the movable block 12 to move, because the chain 3 performs a closed-loop type circulating motion, the motion track of the movable block 12 coincides with the shape of the chain 3, and also performs a closed-loop type circulating motion, in the process that the movable block moves along with the chain 3, the movable block 12 drives the first connecting rod 15 to rotate around the central axis of the second sprocket 11, the rotation of the first connecting rod 15 drives the pull rod 7 to rotate around the central axis of the second sprocket 11, and simultaneously, due to the anti-falling function of the fastener 131, the first connecting rod 15 drives the bracket 13 and the turntable 17 to synchronously rotate around the central axis of the second sprocket 11 through the fastener 131, the rotation of the pull rod 7 drives the movable platen 8 to rotate, the rotation of the platen 8 enables the hammer block 83 on the platen 8 to continuously move away from or approach to the edge of the platen 8 along the slide bar 81 under the action of self gravity, and when the hammer block 83 approaches to the edge of the platen 8, at this moment, the hammer block 83 hammers weeds and soil to further smash the weeds and the soil, the efficiency of smashing the weeds and the soil is improved, vibration generated when the hammer block 83 falls improves the material vibrating effect on the screen cylinder 10, when the hammer block 83 is far away from the edge of the pressing plate 8, the position of the hammer block 83 is raised, potential energy is improved, and energy storage is carried out for hammering the weeds and the soil next time, and the process is repeated.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a crops are planted and are used weeding device, is including fixing drive case (1) in the frame, its characterized in that: the lifting mechanism is characterized by further comprising two lifting plates (4) fixed on the rack and a lifting frame (23) fixed in the middle of the lower surface of the driving box (1), the two lifting plates (4) are symmetrically located on two sides of the driving box (1), a second chain wheel (11) is connected to the lifting plates (4) in a fixed-shaft rotating mode, two output shafts of the driving box (1) are arranged, each output shaft vertically penetrates through the corresponding lifting plate (4) and can rotate relative to the lifting plate (4), a first chain wheel (2) is fixed to the end of each output shaft, and the first chain wheel (2) is connected with the second chain wheel (11) through a chain (3);

two side surfaces of the hanger (23) are respectively and rotatably connected with a rotating ring (24) in a fixed-shaft manner, the ring surface of the rotating ring (24) is parallel to the side surfaces of the hanger (23), the second chain wheel (11) is fixedly connected with the corresponding rotating ring (24) through a plurality of cross rods (5), and a plurality of soil planing mechanisms (6) for planing soil and weeding are fixed on the cross rods (5);

both sides face of gallows (23) all is fixed with a sieve section of thick bamboo (10), and sieve section of thick bamboo (10) be located corresponding swivel (24) inside and with corresponding swivel (24) sharing the central axis, slide connection has two clamp plates (8) in sieve section of thick bamboo (10), clamp plate (8) are fixed with pull rod (7) towards the one side center department of two (11) sprockets, pull rod (7) sliding connection is located the center of corresponding two (11) sprockets, and pull rod (7) are located the end in two (11) outsides of sprocket and are connected with chain (3) through connecting rod (15).

2. The weeding apparatus for crop planting according to claim 1, wherein: a plurality of horizontal pole (5) move towards the equidistant range along the circumference of sprocket two (11), and horizontal pole (5) perpendicular to the disc of sprocket two (11), a plurality of dig native mechanism (6) on horizontal pole (5) move towards the equidistant range along horizontal pole (5) to dig native mechanism (6) on two adjacent horizontal poles (5) and misplace each other.

3. The weeding apparatus for crop planting according to claim 2, wherein: dig native mechanism (6) including fixing dig native claw (61) on horizontal pole (5), and dig native claw (61) and be L shape, dig native claw (61) and keep away from the one end of horizontal pole (5) for digging native portion, and dig native claw (61) and seted up spout (62) on one section of being connected with horizontal pole (5), sliding connection presses flitch (64) in spout (62), press flitch (64) fixed connection to unload piece (63), unload piece (63) and press flitch (64) to be located the both sides of digging native claw (61) respectively, and press flitch (64) to laminate with digging native portion.

4. The weeding apparatus for crop planting according to claim 1, wherein: one end of the second chain wheel (11) corresponding to the screen cylinder (10) in the direction is abutted against the second chain wheel (11) and can rotate relatively, the screen cylinder (10) and the second chain wheel (11) share the central axis, and the upper part of the screen cylinder (10) is provided with a blanking port (22) along the axial direction of the screen cylinder (10).

5. The weeding apparatus for crop planting according to claim 4, wherein: the sieve is characterized in that a plurality of through sieve holes (102) are uniformly distributed in the side wall of the sieve drum (10), a particle board (101) is fixed at an opening of each sieve hole (102) in the inner side wall of the sieve drum (10), the cross section of the particle board (101) is in a shape of a triangle, and the length direction of the particle board (101) is parallel to the axial direction of the sieve drum (10).

6. The weeding apparatus for crop planting according to claim 1, wherein: two side faces of the second chain wheel (11) are respectively fixed with an outer shaft sleeve (16) and an inner shaft sleeve (18), a pull rod (7) is respectively connected to the inner portions of the outer shaft sleeve (16) and the inner shaft sleeve (18) in a sliding mode, a vibration mechanism (9) is arranged between the inner shaft sleeve (18) and the pull rod (7), a fixed shaft on the outer shaft sleeve (16) rotates to be connected with a rotary disc (17), a support (13) is fixed to the edge of the rotary disc (17), a fastener (131) is fixed to the end of the support (13), a bar-shaped through groove (14) is formed in the middle of the first connecting rod (15), and the end of the support (13) is connected to the bar-shaped through groove (14) through the fastener (131) and can slide in the bar-shaped through groove (14).

7. The weeding apparatus for crop planting according to claim 6, wherein: the chain (3) is hinged to a movable block (12), one end of a first connecting rod (15) is hinged to one end of the pull rod (7) located on the outer side of the screen cylinder (10), and the other end of the first connecting rod (15) is hinged to the movable block (12).

8. The weeding apparatus for crop planting according to claim 6, wherein: the material vibrating mechanism (9) comprises a plurality of hammers (21) and a ring sleeve (19) which is rotationally connected with the inner shaft sleeve (18) in a fixed shaft mode, the hammers (21) are arranged at equal intervals along the circumferential trend of the pull rod (7), and the hammers (21) are hinged with the ring sleeve (19) and the pull rod (7) through a second connecting rod (20).

9. The weeding apparatus for crop planting according to claim 8, wherein: the improved sliding plate is characterized in that a plurality of sliding strips (81) are fixed on the plate surface of the pressing plate (8) at equal intervals along the circumferential direction of the plate surface, the sliding strips (81) move towards the center of a circle of the pressing plate (8) along the radial direction of the plate surface of the pressing plate (8), limiting convex blocks (82) are fixed at the two ends of each sliding strip (81), and the sliding strips (81) are connected with hammer blocks (83) in a sliding mode.

10. The use method of a weeding apparatus for crop planting according to claim 9, wherein: the method comprises the following steps:

the method comprises the following steps: the driving box (1) drives the chain (3) and the chain wheel II (11) to rotate through the chain wheel I (2), so that the cross rod (5) is driven to rotate, and the soil digging mechanism (6) digs weeds and soil into the screen drum (10);

step two: the chain (3) drives the pressing plate (8) to crush soil and weeds in the screen drum (10) through the first connecting rod (15) and discharge the soil and the weeds from the screen drum (10);

step three: the vibrating mechanism (9) vibrates the sieve drum (10) to prevent blockage while the pressing plate (8) crushes the soil and weeds;

in the process that the movable block moves along with the chain (3), the movable block (12) drives the first connecting rod (15) to rotate around the central axis of the second chain wheel (11), the first connecting rod (15) rotates to drive the pull rod (7) to rotate around the central axis of the second chain wheel (11), meanwhile, due to the anti-falling effect of the fastener (131), the first connecting rod (15) drives the support (13) and the rotary disc (17) to synchronously rotate around the central axis of the second chain wheel (11) through the fastener (131), the movable belt (8) rotates along with the rotation of the pull rod (7), the hammer block (83) on the pressing plate (8) is enabled to continuously keep away from or approach the edge of the pressing plate (8) along the sliding strip (81) under the action of self gravity through the rotation of the pressing plate (8), when the hammer block (83) approaches the edge of the pressing plate (8), the hammer block (83) can further smash weeds and soil through hammering, and when the hammer block (83) leaves away from the edge of the pressing plate (8), at the moment, the position of the hammer block (83) is raised, potential energy is improved, energy is stored for hammering weeds and soil next time, and the process is circulated.