CN112243673A - Self-propelled harvesting and picking machine - Google Patents

Abstract

The invention relates to a self-propelled harvesting and picking machine, which comprises a vehicle body part and an operation part, wherein the vehicle body part is provided with a front opening and a rear opening; the operation part comprises a pickup table assembly, a conveyor, a sorting table and a self-discharging device; the picking platform assembly is used for picking up harvested crops in the deep soil layer and on the surface of the soil, conveying the harvested crops backwards, and realizing primary separation and screening of the harvested crops, seedlings and residual soil in the process of conveying backwards; the conveyor is used for conveying the harvested crops output by the picking platform assembly to the sorting platform, further separating and screening out seedlings and residual soil in the conveying process, and sucking and discharging weeds, crop straws and broken leaves mixed in the crops through the air suction type impurity discharging device; after the crops enter the sorting table, large impurities such as soil blocks which are not removed are sorted out manually, and the harvested crops are conveyed into a collecting bag supported by a self-discharging device, so that the crops are collected and automatically discharged. The invention has low crop damage rate, high yield and high harvesting efficiency.

Description

Self-propelled harvesting and picking machine

Technical Field

The invention belongs to the field of agricultural harvesting machinery, and mainly relates to a self-propelled harvesting pick-up machine which is mainly used for harvesting and picking up crops such as tuber agricultural products and fruits.

Background

Agricultural product harvesters are important devices in the field of agricultural machinery, and tuberous-stem agricultural product harvesters are a major class of such harvesters. The existing tuber agricultural product harvester has the following problems:

(1) most designs adopt traction type and backpack type structures, so that the arrangement causes inconvenient operation and control, and the working capacity is limited.

(2) Many crops which are just taken out of the ground have fragile and tender skins, the harvesting operation is particularly easy to damage, and the existing equipment is not enough in design for the aspect, so that the harvesting damage of the crops after harvesting is serious.

(3) At present, most of harvesters only turn crop fruits to the ground and pick up the crop fruits manually, so that the harvesting efficiency is low and the labor intensity is high.

Aiming at the defects of the tuber agricultural product harvest, a harvesting machine with low crop damage rate, high harvest net rate and high harvest efficiency needs to be designed.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the harvesting pick-up machine which is low in crop damage rate, high in net harvesting rate and high in harvesting efficiency.

The above object of the present invention is achieved by the following technical solutions:

a self-propelled harvesting and picking machine is characterized in that: comprises a vehicle body part and a working part; the vehicle body part comprises a vehicle chassis, a cab, a drive axle, a steering axle and an engine; the operation part comprises a pickup table assembly, a conveyor, a sorting table and a self-discharging device; the picking table assembly, the conveyor, the sorting table and the self-discharging device are sequentially connected in the front-back direction along the conveying direction of the harvested materials;

the picking platform assembly is arranged at the front end of the trolley body and comprises a picking rack, a picking chain harrow, a primary sieve feeding device and a seedling cutting device, wherein the picking rack is internally and rotatably connected with the chain harrow, the primary sieve feeding device is arranged at the bottom of the feeding end of the picking rack, two vertical side walls of the feeding end of the picking rack are fixedly bridged with a door-shaped fixing frame, and a first power unit for providing rotary power for the chain harrow and a second power unit for providing rotary power for the primary sieve feeding device are arranged on the side walls of the picking rack; seedling cutting devices are symmetrically arranged on two sides of the door-shaped fixing frame, and drip irrigation pipe guide steel rings are symmetrically and fixedly arranged on two side walls of the seedling cutting devices and the picking platform; the primary screen feeding device comprises a pickup shovel, a first screen roller and a second screen roller which are sequentially arranged at the feeding end of the pickup table, wherein the pickup shovel is obliquely and downwards arranged, and two ends of the pickup shovel are fixedly connected with the inner walls of two sides of the pickup table frame; the two ends of the first screen roller and the second screen roller penetrate through the two side walls of the picking table and are in rotating connection with the two side walls of the picking table, the diameter of the cross section of the first screen roller is smaller than that of the cross section of the second screen roller, and the first screen roller and the second screen roller are provided with rotating power at the same angular speed by a second power unit; the fixed end of the seedling cutting device is fixedly connected to the door-shaped fixed frame, the movable end of the seedling cutting device cuts into soil and provides rotary power when the picking machine runs, the seedling cutting device comprises a fixed pipe, a swing pipe, a disc cutter and a floating type shock absorber, wherein the upper end of the fixed pipe is fixedly connected with a fixed plate, the lower end of the fixed plate is hinged and connected with the swing pipe, and the middle part of the fixed pipe is hinged and connected with the fixed end of the floating type shock absorber; the lower part of the swing pipe is rotatably connected with a disc cutter, and the upper part of the swing pipe is hinged with the movable end of a floating type shock absorber;

the conveyor adopts a chain conveyor;

the sorting table consists of a conveying table and sorting standing platforms erected on two sides of the conveying table;

the self-discharging device is integrally arranged at the rear end of the vehicle body and is connected with the sorting table; the device comprises two rails, a lifting frame, a driving mechanism and a rear towing frame which are oppositely arranged on the left and the right, wherein the rear towing frame comprises a towing frame platform for supporting a collection bag; the two rails are fixedly connected with a frame of the picking machine, the lifting frame is arranged between the two guide rails in a vertically movable mode, the driving mechanism is connected with the lifting frame, and the rear towing frame is hinged with the lifting frame and is in guide fit with the two guide rails; when the lifting frame is at the upper working position, the rear towing frame is synchronously at the upper working position and is in a lifting state; when the lifting frame is at the lower working position, the rear towing frame is synchronously at the lower working position and is in a declination unloading state.

Further: the picking chain harrow comprises side chains, a middle chain and a plurality of chain harrow rods which are arranged in parallel at intervals, wherein the two ends of each chain harrow rod are fixedly connected with the side chains, and the middle part of each chain harrow rod penetrates through and is rotatably connected with the middle chain; the side chains and the middle chain are rotatably supported by the picking rack; the chain harrow pole includes many polished rods and the support pull rod that the equidistant setting, and wherein polished rod and the periphery that holds in the palm the pull rod all compound the parcel have the rubber layer to hold in the palm the rubber layer outside of pull rod and make the multirow finger-like rubber stick of staggered arrangement.

Further: a plurality of fixed cross beams are fixedly arranged in the middle of the picking rack, a plurality of side chain rollers for rolling and supporting side chains are rotatably connected to the side wall of the picking rack, and a chain shaking roller for supporting and shaking a chain rake rod is rotatably connected to the middle of the side wall of the picking rack; a plurality of middle chain rollers for supporting the middle chain are rotatably arranged on the fixed cross beam.

Further: the first power unit comprises a first hydraulic motor, a driving shaft and a driven shaft, wherein two ends of the driving shaft and the driven shaft are respectively rotatably connected with the picking table, and the driving shaft and the driven shaft are rotatably sleeved with the chain harrow; the first hydraulic motor is fixedly arranged on the side wall of the picking platform, and the output end of the first hydraulic motor is in power connection with one end of the driving shaft through a transmission chain; the second power unit comprises a second hydraulic motor, a driving chain, a driven chain and a plurality of fluted discs with the same diameter, wherein the fluted discs with the same diameter are respectively and coaxially and fixedly connected to the end parts of the first screen roller and the second screen roller; the output end of the second hydraulic motor and the fluted disc of the second screen roller are wound with a driving chain, and the fluted disc of the second screen roller and the fluted disc of the first screen roller are wound with a driven chain.

Further: the top end of the fixed pipe is fixedly welded with the fixed plate along the radial direction, and the fixed plate is bound and fixed with the cross beam of the door-shaped fixed frame through the U-shaped bolt.

Further: the conveyer comprises a conveyer frame, the conveyer frame is fixed on a frame of the picking machine, a bottom plate for receiving soil and sundries is fixed below the conveyer frame, and a conveying chain harrow is arranged in the conveyer frame; the conveying chain harrow comprises a left rubber chain and a right rubber chain which are arranged in parallel, a circle of harrow bars which are connected to the two rubber chains in a crossing way and are uniformly arranged according to a set distance, and a plurality of rubber harrow plates which are uniformly and vertically fixed on the harrow bars at intervals; except the harrow rods for fixing the rubber harrow plates, other harrow rods are formed by wrapping rubber sheaths outside metal rods; a soil falling space is arranged between the adjacent harrow bars; the left side and the right side of the front end in the conveyor frame are respectively fixed with a driven wheel, the rear end of the conveyor frame is provided with a driving shaft which is transversely arranged, two ends of the driving shaft are provided with driving wheels, and two rubber chains are respectively connected with the driving wheels and the driven wheels on the corresponding sides, so that the conveying chain harrow is integrally supported in the conveyor frame in a manner that the front section is inclined upwards and the rear section is horizontally arranged; tow belt wheels are arranged below the upper stroke section and the lower stroke section of the two rubber chains.

Further: an air suction type impurity removing device is arranged above the crop conveying surface on the chain conveyor; the air suction type impurity removing device comprises an impurity removing housing, a crushing device and an impurity removing fan; the impurity discharging housing is formed by connecting a crushing device mounting section, a fan mounting section and an impurity discharging section, and the crushing device mounting section is transversely erected and mounted above the conveyor frame; the lower end of the smashing device mounting section is provided with a sundries suction port aligned with the conveying chain harrow, one end of the smashing device mounting section is a closed end, the other end of the smashing device mounting section is connected and communicated with the suction end of the fan mounting section, the discharge end of the fan mounting section is connected and communicated with the sundries discharge section, and the outer end of the sundries discharge section forms a sundries discharge port; the suction end and the discharge end of the fan mounting section are arranged on two vertical end surfaces;

the crushing device is arranged in an inner cavity of the crushing device mounting section, and the impurity removing fan is arranged in an inner cavity of the fan mounting section.

Furthermore, the crushing device comprises a movable cutter shaft, a plurality of movable cutters, a fixed cutter frame and a plurality of fixed cutters; one end of the movable cutter shaft is rotatably supported at the closed end of the crushing device mounting section and extends out of the closed end, and the other end of the movable cutter shaft is coaxial with a fan shaft of the impurity removing fan and rotatably supported at the end part of the fan mounting section; the plurality of movable cutters are uniformly distributed and fixed on the movable cutter shaft along the axial direction, the movable cutters are arranged in a staggered manner along the circumferential direction, the fixed cutter frame is arranged on one side of the movable cutter shaft in parallel and fixed in an inner cavity of the installation section of the crushing device, the plurality of fixed cutters are fixed on the fixed cutter frame along the axial direction, and the plurality of movable cutters and the plurality of fixed cutters are opposite one by one to form a plurality of groups of cutting units; the extension end of the movable cutter shaft is an impurity removal power input end which is provided with a belt wheel and is in transmission connection with power transmission branches of other parts of the picking machine through a transmission belt; or the impurity removing power input end of the movable cutter shaft is directly connected with the driving motor; the impurity removing fan is composed of a fan shaft and a plurality of fan blades fixedly installed on the fan shaft.

Further: the inner sides of the two tracks are respectively provided with a lifting motion track groove and a rear bracket motion track groove which are oppositely arranged, the lifting motion track groove is a vertical straight groove with equal groove width, and the rear bracket motion track groove is composed of an upper vertical track groove section with equal groove width and a lower track groove section with gradually increasing groove width from top to bottom;

the left side and the right side of the lifting frame are provided with main guide wheels, the main guide wheels on the two sides and the lifting motion track grooves of the two tracks respectively form embedded sliding fit, so that the lifting frame is supported between the two tracks in a vertically movable manner; two auxiliary guide wheels which are arranged up and down are respectively arranged at the positions, close to the left side and the right side, of the rear end of the lifting frame, and the auxiliary guide wheels at the two sides are respectively in sliding contact with the inner side surfaces of the rails at the corresponding sides;

the rear towing bracket consists of a towing bracket main body and a towing bracket platform which is fixed on the towing bracket main body and used for supporting the collection bag; the lower part of the front end of the towing bracket main body is hinged with the lifting bracket, the two sides of the upper part of the front end of the towing bracket main body are provided with towing bracket guide wheels, and the towing bracket guide wheels on the two sides are respectively embedded into the rear towing bracket moving track grooves corresponding to the side tracks to form guiding cooperation.

Further: the driving mechanism comprises a hydraulic cylinder and a lifting chain, the hydraulic cylinder is fixedly arranged at the upper end of the rack along the front-back direction in a mode that a cylinder rod extends forwards, the front end of the lifting chain is fixedly connected with the rack, and the rear end of the lifting chain is fixedly connected with the lifting frame; the lifting chain sequentially winds through a horizontal steering guide wheel, a horizontal steering vertical guide wheel and a vertical steering guide wheel from the front end to the rear end of the lifting chain; the horizontal steering guide wheel is rotatably supported on a first wheel frame, the first wheel frame is fixed at the cylinder rod end of the hydraulic cylinder, the horizontal steering vertical guide wheel is rotatably supported on a second wheel frame, the second wheel frame is fixed below a standing platform of the sorting conveying table, the vertical steering guide wheel is rotatably supported on a third wheel frame, and the third wheel frame is fixed on a transverse connecting rod of the two tracks.

The invention has the advantages and positive effects that:

the picking platform assembly in the self-propelled harvesting and picking machine is arranged at the front end of the vehicle body and used for picking up harvested crops in a soil deep layer and on a soil surface, conveying the harvested crops backwards and realizing primary separation and screening of the harvested crops, seedlings and residual soil in the process of conveying backwards; the conveyor is used for conveying the harvested crops output by the picking platform assembly to the sorting platform, further separating and screening out seedlings and residual soil in the conveying process, and sucking and discharging weeds, crop straws and broken leaves mixed in the crops through the air suction type impurity discharging device; after the crops enter the sorting table, large impurities such as soil blocks which are not removed are sorted out manually, and the harvested crops are conveyed into a collecting bag supported by a self-discharging device, so that the crops are collected and automatically discharged.

1. This self-propelled results pickup machine has reached higher receipts net rate through tertiary separation screening, at the in-process of picking up, need not to park and can realize automatic discharge, has reached higher results rate.

2. The self-propelled harvesting pick-up machine has the advantages that in the picking-up process, the main workpiece in contact with crops is in the rubber-coated structure, the hard collision damage to the crops is avoided, the damage rate of the crops is reduced, and the harvesting quality of the crops is guaranteed.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a perspective view of the pickup station assembly of the present invention;

FIG. 3 is a top view of the pickup station of the present invention;

FIG. 4 is a side view of the pickup station of the present invention;

FIG. 5 is an enlarged view of a portion of the drag link of the present invention;

FIG. 6 is a top view of the prescreen feed device of the present invention;

FIG. 7 is a schematic illustration of the connection of a second power unit of the present invention;

FIG. 8 is a schematic structural view of the seedling cutting device of the present invention;

FIG. 9 is a perspective view of the conveyor of the present invention in combination with a suction type impurity removal device;

FIG. 10 is a schematic perspective view of the conveyor of the present invention;

FIG. 11 is a schematic view of the conveying rake of FIG. 10;

FIG. 12 is a schematic structural view of the air suction type impurity removing device according to the present invention;

FIG. 13 is an enlarged view of a portion of FIG. 12;

fig. 14 is a schematic structural view of the self-discharging device of the present invention in the lifting position;

FIG. 15 is an enlarged view of a portion A of FIG. 14;

FIG. 16 is a schematic structural view of the self-dumping apparatus of the present invention in a lower inclined working position;

FIG. 17 is an enlarged view of part B of FIG. 16;

fig. 18 is a schematic structural view of a rail in the self-discharging device of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments, which are illustrative only and not limiting, and the scope of the present invention is not limited thereby.

A self-propelled harvest pickup, please refer to fig. 1: comprises a vehicle body part and a working part; the vehicle body part comprises a chassis 10, a cab 2, a drive axle 3, a steering axle 5 and an engine 4; the operation part comprises a pickup table assembly 1, a conveyor 8, a sorting table 9 and a self-discharging device 6; along the conveying direction of the harvested materials, the picking platform assembly, the conveyor, the sorting platform and the self-discharging device are sequentially connected from front to back. The specific structure of each working part is as follows:

a pickup table assembly, please refer to fig. 2-8:

the seedling cutting machine comprises a pickup table 1.1, a chain harrow 1.2, a primary sieve feeding device 1.5 and a seedling cutting device 1.4, wherein the pickup table is internally and rotatably connected with the chain harrow, the primary sieve feeding device is arranged at the bottom of the feeding end of the pickup table, two vertical side walls of the feeding end of the pickup table are fixedly connected with a cross-over door-shaped fixing frame 1.3, and a first power unit 1.8 and a second power unit 1.6 are arranged on the side walls of the pickup table, wherein the first power unit provides rotary power for the chain harrow, and the second power unit provides rotary power for the primary sieve feeding device; seedling cutting devices are symmetrically arranged on two sides of the door-shaped fixing frame, and drip irrigation pipe guide steel rings 1.7 are symmetrically and fixedly arranged on two side walls of the seedling cutting devices and the picking platform; the primary screen feeding device comprises a pickup shovel 1.26, a first screen roller 1.27 and a second screen roller 1.28 which are sequentially arranged at the feeding end of the pickup table, wherein the pickup shovel is obliquely and downwards arranged, and two ends of the pickup shovel are fixedly connected with the inner walls of two sides of the pickup table; the two ends of the first screen roller and the second screen roller penetrate through the two side walls of the picking table and are in rotating connection with the two side walls of the picking table, the diameter of the cross section of the first screen roller is smaller than that of the cross section of the second screen roller, and the first screen roller and the second screen roller are provided with rotating power at the same angular speed by a second power unit; the fixed end of the seedling cutting device is fixedly connected to the door-shaped fixed frame, the movable end of the seedling cutting device cuts into soil and provides rotary power when the harvester runs, the seedling cutting device comprises a fixed pipe 1.22, a swing pipe 1.24, a circular disc cutter 1.25 and a floating type shock absorber 1.23, wherein the upper end of the fixed pipe is fixedly connected with a fixed plate, the lower end of the fixed plate is hinged and connected with the swing pipe, and the middle part of the fixed pipe is hinged and connected with the fixed end of the floating type shock absorber; the lower part of the swing pipe is rotatably connected with a disc cutter, and the upper part of the swing pipe is hinged with the movable end of a floating type shock absorber.

The chain harrow comprises a side chain 1.9, a middle chain 1.10 and a plurality of chain harrow rods which are arranged in parallel and at intervals, wherein the two ends of each chain harrow rod are fixedly connected with the side chains, and the middle part of each chain harrow rod penetrates through and is rotatably connected with the middle chain; the side chains and the middle chain are rotatably supported by the picking table; the chain harrow pole comprises a plurality of polished rods 1.11 and support pull rods 1.12 which are arranged at equal intervals, wherein the peripheries of the polished rods and the support pull rods are all compositely wrapped with rubber layers 1.29, and a plurality of rows of finger-shaped rubber rods 1.30 which are arranged in a staggered mode are manufactured outside the rubber layers of the support pull rods.

Moreover, a plurality of fixed cross beams 1.18 are fixedly arranged in the middle of the picking-up table, a plurality of side chain rollers 1.20 for rolling and supporting side chains are rotatably connected to the side wall of the picking-up table, and a chain shaking roller 1.19 for supporting and shaking a chain rake rod is rotatably connected to the middle of the side wall of the picking-up table; a plurality of middle chain rollers 1.17 supporting the middle chain are rotatably arranged on the fixed beam.

Moreover, the first power unit comprises a first hydraulic motor 1.16, a driving shaft 1.14 and a driven shaft 1.13, wherein two ends of the driving shaft and the driven shaft are respectively connected with the picking platform in a rotating manner, and the driving shaft and the driven shaft are rotatably sleeved with the chain harrow; the first hydraulic motor is fixedly arranged on the side wall of the picking platform, and the output end of the first hydraulic motor is in power connection with one end of the driving shaft through a transmission chain 1.15.

The second power unit comprises a second hydraulic motor 1.21, a driving chain 1.31, a driven chain 1.32 and a plurality of fluted discs 1.33 with the same diameter, wherein the fluted discs with the same diameter are coaxially and fixedly connected to the end parts of the first screen roller and the second screen roller respectively; the output end of the second hydraulic motor and the fluted disc of the second screen roller are wound with a driving chain, and the fluted disc of the second screen roller and the fluted disc of the first screen roller are wound with a driven chain.

And the top end of the fixed pipe is fixedly welded with the fixed plate 1.35 along the radial direction, and the fixed plate is bound and fixed with the beam of the door-shaped fixed frame through the U-shaped bolt 1.34.

In addition, the floating type shock absorber and the picking platform are preferably mature products in the prior art;

in addition, the first hydraulic motor and the second hydraulic motor are preferably mature products in the prior art;

in addition, the invention preferably designs the picking shovel at the front side of the foremost end of the picking platform, and the picking shovel has a certain angle, so that the picking shovel can conveniently cut into deep soil;

in addition, preferably, two screen rollers (a first screen roller and a second screen roller) are arranged on the front side of the chain harrow of the picking table, the two screen rollers keep consistent with the conveying angle of the picking table when working, the two screen rollers extend into soil in a working state, the accumulation of soil is reduced in the rotating process, and potatoes are quickly conveyed to the picking chain harrow through the transition of the two screen rollers;

in addition, the invention is preferable that the rotation diameter of the first screen roller is smaller than that of the second screen roller, so that the screen roller can conveniently extend into soil, and the advancing resistance is reduced;

in addition, the invention preferably adopts the mature technical means in the prior art for the fixed connection mode of the two ends of the chain harrow bar and the side chains and the rotary connection mode of the middle part and the middle chain of the chain harrow bar.

To more clearly illustrate the embodiments of the present invention, an example is provided below:

the utility model provides a pick up platform assembly, includes and picks up platform, chain harrow, prescreening feed arrangement, cuts seedling device and drip irrigation pipe direction steel ring, wherein:

a seedling cutting device: the potato seedling picking machine is arranged on two sides of the front end of the picking platform and inserted into soil, a harvester moves forward to provide rotary power, potato seedlings outside the working width (two sides of the picking platform) can be cut off, and potatoes in a working area (a picking platform area) are prevented from rolling to the outer side of the picking platform; the seedling cutting device is symmetrically arranged on two sides of the picking platform, and is provided with a fixed pipe and a swing arm pipe which are in self-adaptive buffer connection through a floating type shock absorber, and a circular disc cutter is arranged on the swing arm pipe; the cutting disc is made of special materials, has a self-cleaning function and is not easy to be clayed, the design of the floating type shock absorber can prevent the cutting disc from being damaged when the cutting disc is collided by stones and the like, and the whole picking platform has an auxiliary supporting (self-adaptive downward pressure providing) effect; finally, the disc cutter does not need to provide additional power, the forward power of the harvester and the friction force of the soil are used for providing rotating power for the disc cutter together, and the running resistance of the harvester can be effectively reduced after the seedlings are cut by the disc cutter.

Prescreening a feeding device: the device is arranged at the foremost end of the picking table and is inserted into soil, wherein the device comprises a picking shovel, a first sieve roller and a second sieve roller which are sequentially arranged from front to back, wherein the rotating speeds of the first sieve roller and the second sieve roller are the same, but the diameter of the first sieve roller is smaller than that of the second sieve roller; in the course of the work, it shovels deep potato at first to insert among the soil to pick up the shovel, then the potato is carried to picking up the bench through first sieve roller and second sieve roller in proper order, the potato that lies in between first sieve roller and the second sieve roller in the transportation process receives two sieve rollers syntropy with the fast revolving force of nevertheless drawing of different diameters, carry out the prescreening to seedling and earth on the potato, seedling and earth that fall down through the gap between sieve pole and the roller, thereby realize carrying out the prescreening to seedling and remaining earth on the potato when improving the potato and receive the net rate. The primary screening feeding device can ensure the soil depth of digging potatoes, avoid the problem of leaving buried potatoes and improve the net harvesting rate; the soil is prevented from being heaped up after shoveling, the problem that the picking chain harrow can not extend into the soil is solved, and the picking efficiency is improved; the resistance of the picking table can be reduced, and the smoothness of potato conveying is improved.

Pick up platform, chain harrow: every four polished rods are provided with a support pull rod, the polished rods and the support pull rods form a chain harrow rod together, and the chain harrow rod, the side chains and the middle chain form a chain harrow together; the finger-shaped rubber bars on the supporting pull rods pull soil and potatoes to accelerate potato soil separation, and the finger-shaped rubber bars hang potato seedlings and are matched with a seedling pulling roller at the discharge end of the picking chain table to accelerate potato seedling separation; solves the problem of poor potato seedling separation effect of the potatoes and solves the problems of falling of the potatoes and peeling of the potatoes. According to the invention, the finger-shaped rubber bars are preferably made of rubber, the height of the finger-shaped rubber bars is 30mm, the potatoes can be prevented from falling back, the polished rod and the support pull rod are both subjected to rubber wrapping treatment, and the damage to the skins of the potatoes is effectively avoided.

Drip irrigation pipe guide steel ring: the drip irrigation pipe is used for being shifted out of a working area of the potato picking platform, two drip irrigation pipe guide steel rings are respectively added on two sides of the picking platform of the potato harvester, so that the drip irrigation pipe is sleeved with the drip irrigation pipe guide steel rings, when the potatoes are picked up, the drip irrigation pipes doped in soil are shifted out of the picking working area, the drip irrigation pipes are prevented from entering the picking platform to cause the damage of the potatoes, or the picking platform is wound and locked by the drip irrigation pipes. Because of the length of drip irrigation pipe, the resistance to drip irrigation pipe direction steel ring is bigger, makes its deformation easily, and the direction effect of drip irrigation pipe direction steel ring after the deformation is not good, according to experimental effect, the material of drip irrigation pipe direction steel ring chooses for use round steel 8/20, non-deformable. And the height and the relative position of the drip irrigation pipe guide steel ring at the two sides of the potato picking table are front high and back low, namely the height of the drip irrigation pipe guide steel ring close to the feeding side of the picking table is higher than that of the drip irrigation pipe guide steel ring close to the discharging side of the picking table, so that the drip irrigation pipes are guided and conveyed to the position below wheels of the harvester, and the drip irrigation pipes are tensioned along with the forward movement of the harvester. The effective improvement has solved the transfer problem of driping irrigation the pipe, is showing the pick-up efficiency that has improved the potato, and the pipe direction steel ring is driped irrigation for the pipe provides the direction transport, and the resistance diminishes, and is not fragile.

Second, conveyor, please refer to fig. 9-13:

comprising a conveyor frame 8.4, which is fixed to the machine frame. The conveyor frame comprises a left side wall plate 8.4.1 and a right side wall plate 8.4.2, the lower ends of the left side wall plate and the right side wall plate are connected through a cross rod, the upper end and the lower end of each of the left side wall plate and the right side wall plate are provided with an inward bent edge, and the inner sides of the left side wall plate and the right side wall plate are respectively fixed with a left baffle plate 8.4.3 and a right baffle plate 8.4.4; front connecting plate welds 8.4.5 are fixed to the front ends of the left and right side walls.

A bottom plate 8.2 used for receiving soil and sundries is arranged below the conveyor frame, and the bottom plate is fixedly connected with the side wall plates at two sides through a connecting plate.

A conveying chain harrow 8.1 is arranged in the conveying frame; the conveying chain harrow comprises a left rubber chain 8.1.1 and a right rubber chain 8.1 which are arranged in parallel, a plurality of rubber harrow plates 8.2.3 which are connected on the two rubber chains in a riveting mode and are uniformly distributed according to a set interval and are formed by a circle of harrow bars 8.1.2 and a plurality of harrow plates 8.2.3 which are uniformly and vertically fixed on the harrow bars at intervals. The rubber harrow plate is preferably provided with the weight reduction groove, so that the weight can be reduced, and the material cost is saved. Except the harrow rods for fixing the rubber harrow plates, other harrow rods are formed by wrapping rubber sheaths outside metal rods; a soil falling space is arranged between the adjacent harrow bars; the left side and the right side of the front end in the conveyor frame are respectively fixed with a driven wheel (not shown in the drawing), the rear end of the conveyor frame is provided with a driving shaft 8.5 which is transversely arranged, one end of the driving shaft can be provided with a driving wheel 8.6 and is connected to the whole power conveying chain of the harvesting and picking machine through a driving belt, so that the power input is realized, and one end of the driving shaft can be directly connected with a power source component to realize the direct power input. The two ends of the driving shaft are provided with driving wheels, and the two rubber chains are respectively connected with the driving wheels and the driven wheels on the corresponding sides, so that the conveying chain harrow is integrally supported in the conveyor frame in a mode that the front section is inclined upwards and the rear section is horizontally arranged; and towing structures are arranged below the upper stroke section and the lower stroke section of the two rubber chains. The towing structure may be a tug or pallet, in the present invention a tug 8.3 is preferably used, which is connected to the side wall plate on the opposite side of the conveyor frame by means of a wheel axle.

The conveyer reduces the content of sundries in crops and can remove soil and broken sundries carried in the crops in time. When the harrow plate conveys crops to the next part to move back, the harrow plate can scrape soil and sundries falling on the bottom plate to the sundry discharging opening at the bottom of the conveyor, and the soil and other small sundries fall back to the ground through the sundry discharging opening. Meanwhile, the parts of the conveyor, which are contacted with the crops, are coated with rubber, so that the damage rate of the crop skins is greatly reduced, the time is saved for screening potatoes in the later period, and the crop harvesting cost is reduced.

An air suction type impurity discharging device 7 is further arranged on the basis of the conveyor, and the specific structure is as follows:

comprises an impurity removing encloser 7.1, a crushing device 7.5 and an impurity removing fan 7.6. The impurity removing housing forms an impurity removing channel which is formed by connecting a smashing device mounting section 7.1.1, a fan mounting section 7.1.2 and an impurity discharging section 7.1.3, the smashing device mounting section is transversely erected and mounted above a conveying chain of the conveyor, and particularly, the left end and the right end of the smashing device mounting section are fixedly connected with the upper ends of guard plates of transmission chains on two sides of the conveyor through angle plates through screws. The lower end of the crushing device mounting section is provided with a sundries suction inlet aligned with the conveying chain, one end of the crushing device mounting section is a closed end, the other end of the crushing device mounting section is connected and communicated with the suction end of the fan mounting section, the discharge end of the fan mounting section is connected and communicated with the sundries discharge section, and the outer end of the sundries discharge section forms a sundries discharge outlet; the suction end and the discharge end of the fan mounting section are arranged on two vertical end surfaces;

the crushing device is arranged in an inner cavity of the crushing device mounting section, and the impurity removing fan is arranged in an inner cavity of the fan mounting section.

Further: the crushing device comprises a movable knife shaft 7.5.4, a plurality of movable knives 7.5.3, a fixed knife rest 7.5.1 and a plurality of fixed knives 7.5.2, wherein the knife heads of the fixed knives and the movable knives are angle-shaped knives with a certain included angle, and saw teeth are arranged on two sides of the knife heads. One end of the movable cutter shaft can be rotatably supported at the closed end of the crushing device mounting section and extend out of the closed end, and the other end of the movable cutter shaft is coaxial with a fan shaft of the impurity removing fan and can be rotatably supported at the end part of the fan mounting section. The plurality of movable cutters are uniformly distributed and fixed on the movable cutter shaft along the axial direction, the movable cutters are arranged in a staggered mode along the circumferential direction, the fixed cutter frame is arranged on one side of the movable cutter shaft in parallel and fixed in an inner cavity of the installation section of the crushing device, the plurality of fixed cutters are fixed on the fixed cutter frame along the axial direction, and the plurality of movable cutters and the plurality of fixed cutters are opposite one by one to form a plurality of groups of cutting units. For example, in the invention, the moving blades and the fixed blades are 5, wherein 3 moving blades far away from the impurity removing fan are arranged at 120 degrees along the circumferential direction, and the arrangement angles of the other 2 moving blades can be flexibly set. The extension end of the movable cutter shaft is an impurity removal power input end, and the impurity removal power is introduced through the impurity removal power input end to drive the movable cutter shaft and the impurity removal fan to rotate. The trash removal power can be realized in two ways:

1. the input end of the impurity removing power is provided with a belt wheel 7.2 which is in transmission connection with the power transmission branch of other parts of the harvesting and picking machine through a transmission belt. For example, a transversely arranged intermediate shaft 7.4 is installed below the conveyor, belt wheels are installed at two ends of the intermediate shaft, the belt wheel at one end is connected with the belt wheel at the impurity removal power input end through a transmission belt 7.3, and the belt wheel at the other end is connected with the belt wheel additionally arranged at the end part of the transmission shaft of other components through the transmission belt, so that power input is realized.

2. The impurity removing power input end of the movable cutter shaft is directly connected with a driving motor, and the movable cutter shaft is directly driven to rotate by the driving motor.

In the above structure, further: the trash removal fan is composed of a fan shaft 7.6.1 and a plurality of fan blades 7.6.2 fixedly mounted on the fan shaft.

The air suction type impurity discharging device has the advantages that in the crop conveying process, impurities are sucked, crushed and discharged, the impurity content in crops is reduced, time is saved for later-stage screening of the crops, and the crop harvesting cost is reduced.

Thirdly, sorting table, please refer to fig. 1:

mainly constitute by carrying the platform and erectting the letter sorting platform of standing in carrying the platform both sides, carry the platform to adopt the transmission chain to carry a platform structure, and all adopt the rubber coating structure with the part surface of crop contact, the letter sorting platform of standing supplies the letter sorting personnel to stand, and the manual work is chosen out and is carried the bench and adulterated bold impurity such as mud piece in the crop, realizes the last one-level purification operation to the crop.

Fourth, please refer to fig. 14-18 for the self-discharging device:

the self-discharging device is integrally arranged at the rear end of the harvesting and picking machine, is connected with the sorting and conveying table and is used for collecting the crops output by the sorting and conveying table. Mainly includes pickup machine frame 6.1, two tracks 6.2 that relative setting about controlling, crane 6.4, actuating mechanism 6.3 and back bracket 6.5.

The two rails are vertically fixed at the rear end of the rack, the inner sides of the two rails are respectively provided with a lifting motion rail groove 6.2.1 which is oppositely arranged and a rear bracket motion rail groove 6.2.2 which is oppositely arranged, the lifting motion rail groove is a vertical straight groove with equal groove width, namely, the lifting motion rail groove is surrounded by a first groove wall surface 6.2.1a and a second groove wall surface 6.2.1b which are arranged in the front and at the back, and the first groove wall surface and the second groove wall surface are vertical surfaces. The rear towing bracket moving track groove is composed of an upper vertical track groove section with equal groove width and a lower track groove section with gradually increasing groove width from top to bottom. Specifically, the rear bracket moving track groove can be formed by surrounding a third groove wall surface 6.2.2a and a fourth groove wall surface 6.2.2b which are arranged in the front and at the back, the third groove wall surface is a vertical surface, the fourth groove wall surface is composed of a vertical surface section positioned on the upper part and a backward inclined surface section positioned on the lower part and in transition connection with the vertical surface section, and a small vertical surface section can be in transition connection with the lower end of the backward inclined surface section.

The left side and the right side of the lifting frame are provided with main guide wheels 6.6, the number of the main guide wheels on each side is at least two, the main guide wheels on the two sides and lifting motion track grooves of the two tracks form embedded sliding fit respectively, so that the lifting frame is supported between the two tracks in a vertically movable mode; the driving mechanism is in driving connection with the lifting frame.

The rear bracket consists of a bracket main body 6.5.1 and a bracket platform 6.5.2 which is fixed on the bracket main body and is used for supporting the collection bag; the lower part of the front end of the towing bracket main body is hinged with the lifting bracket through two groups of hinge connecting structures 6.8, towing bracket guide wheels 6.9 are arranged on two sides of the upper part of the front end of the towing bracket main body, and the towing bracket guide wheels on the two sides are respectively embedded into rear towing bracket moving track grooves of corresponding side tracks to form guiding matching;

the lifting frame is positioned at the upper working position, the rear towing frame is synchronously positioned at the upper working position and is in a lifting state, so that the condition that the collecting bag cannot slide down when crops fall into the collecting bag is ensured. When the lifting frame is at the lower working position, the rear towing frame is synchronously at the lower working position and is in a declination state. Therefore, the collecting bag filled with the crops can slide down to the ground along the inclined surface under the action of the weight, and automatic discharging is realized.

In the above configuration, the driving mechanism preferably has the following configuration:

including pneumatic cylinder 6.3.2 and lifting chain 6.3.3, the pneumatic cylinder is at the frame upper end along fore-and-aft direction fixed mounting with the mode that the jar pole stretches out forward, the front end and the frame fixed connection of lifting chain, the rear end and the crane fixed connection of lifting chain. Along the front end to the rear end of the hoist chain, the hoist chain sequentially passes around the horizontal steering guide wheel 6.3.1, the horizontal steering vertical guide wheel 6.3.4 and the vertical steering guide wheel 6.3.5. The horizontal steering guide wheel is rotatably supported on a first wheel frame, the first wheel frame is fixed at the cylinder rod end of a hydraulic cylinder, the horizontal steering vertical guide wheel is rotatably supported on a second wheel frame, the second wheel frame is fixed below a standing platform of the sorting conveying table (the standing platform is used for sorting operators to stand and is a supporting rack fixed on a rack), the vertical steering guide wheel is rotatably supported on a third wheel frame, and the third wheel frame is fixed on a transverse connecting rod 6.10 of two tracks. Further, the method comprises the following steps: the lifting chain can adopt a chain or a steel wire rope. When the cylinder rod extends out, the driving mechanism drives the horizontal steering guide wheel to move forwards, the rear end of the lifting chain pulls the lifting frame and the rear towing frame to move upwards, when the guide wheel of the towing frame enters the upper vertical track groove section from the lower track groove section of the track groove moved by the rear towing frame, the rear towing frame rotates around the hinged shaft under the constraint of the track groove, so that the rear towing frame rotates to the upper lifting position, and the blanking collection of crops is completed at the upper lifting position; and when the cylinder rod withdraws, the horizontal steering guide wheel is driven to move backwards, under the action of gravity, the lifting frame, the rear bracket and the collection bag filled with crops move downwards along the rails on two sides, in the process of moving downwards, after the bracket guide wheel enters the lower rail groove section from the upper vertical rail groove section, the bracket guide wheel is in pressing contact with the backward inclined plane section of the rail groove, so that the rear bracket rotates around the hinged shaft to a downward inclined position, and the collection bag is unloaded at the downward inclined position. Realizes one-key operation for discharging, and improves the operating efficiency of the machine.

In the above structure, further: two auxiliary guide wheels 6.7 which are arranged up and down are respectively arranged at the positions of the rear end of the lifting frame, which are close to the left side and the right side, and the auxiliary guide wheels at the two sides are respectively in sliding contact with the inner side surfaces of the tracks at the corresponding sides. The up-and-down stability of the lifting frame is improved.

The self-discharging device realizes the lifting, the raising and the declining of the rear bracket by utilizing the single power source and the curve track groove, thus realizing the unloading of the crop collecting bag under the condition of no stopping, and reducing the problem of complex unloading operation of the crop collecting bag. By adopting the crop self-unloading device, the uninterrupted picking operation can be realized only by equipping 1 to 2 persons for assisting in loading and collecting the package on the rear-end operating platform of the harvesting and picking machine.

The invention adopts the mature products and the mature technical means in the prior art.

Although the embodiments of the present invention and the accompanying drawings are disclosed for illustrative purposes, those skilled in the art will appreciate that: various substitutions, changes and modifications are possible without departing from the spirit and scope of the invention and the appended claims, and therefore the scope of the invention is not limited to the disclosure of the embodiments and the accompanying drawings.

Claims (10)

1. A self-propelled harvesting and picking machine is characterized in that: comprises a vehicle body part and a working part; the vehicle body part comprises a vehicle chassis, a cab, a drive axle, a steering axle and an engine; the operation part comprises a pickup table assembly, a conveyor, a sorting table and a self-discharging device; the picking table assembly, the conveyor, the sorting table and the self-discharging device are sequentially connected in the front-back direction along the conveying direction of the harvested materials;

the picking platform assembly is arranged at the front end of the trolley body and comprises a picking rack, a picking chain harrow, a primary sieve feeding device and a seedling cutting device, wherein the picking rack is internally and rotatably connected with the chain harrow, the primary sieve feeding device is arranged at the bottom of the feeding end of the picking rack, two vertical side walls of the feeding end of the picking rack are fixedly bridged with a door-shaped fixing frame, and a first power unit for providing rotary power for the chain harrow and a second power unit for providing rotary power for the primary sieve feeding device are arranged on the side walls of the picking rack; seedling cutting devices are symmetrically arranged on two sides of the door-shaped fixing frame, and drip irrigation pipe guide steel rings are symmetrically and fixedly arranged on two side walls of the seedling cutting devices and the picking platform; the primary screen feeding device comprises a pickup shovel, a first screen roller and a second screen roller which are sequentially arranged at the feeding end of the pickup table, wherein the pickup shovel is obliquely and downwards arranged, and two ends of the pickup shovel are fixedly connected with the inner walls of two sides of the pickup table frame; the two ends of the first screen roller and the second screen roller penetrate through the two side walls of the picking table and are in rotating connection with the two side walls of the picking table, the diameter of the cross section of the first screen roller is smaller than that of the cross section of the second screen roller, and the first screen roller and the second screen roller are provided with rotating power at the same angular speed by a second power unit; the fixed end of the seedling cutting device is fixedly connected to the door-shaped fixed frame, the movable end of the seedling cutting device cuts into soil and provides rotary power when the picking machine runs, the seedling cutting device comprises a fixed pipe, a swing pipe, a disc cutter and a floating type shock absorber, wherein the upper end of the fixed pipe is fixedly connected with a fixed plate, the lower end of the fixed plate is hinged and connected with the swing pipe, and the middle part of the fixed pipe is hinged and connected with the fixed end of the floating type shock absorber; the lower part of the swing pipe is rotatably connected with a disc cutter, and the upper part of the swing pipe is hinged with the movable end of a floating type shock absorber;

the conveyor adopts a chain conveyor;

the sorting table consists of a conveying table and sorting standing platforms erected on two sides of the conveying table;

the self-discharging device is integrally arranged at the rear end of the vehicle body and is connected with the sorting table; the device comprises two rails, a lifting frame, a driving mechanism and a rear towing frame which are oppositely arranged on the left and the right, wherein the rear towing frame comprises a towing frame platform for supporting a collection bag; the two rails are fixedly connected with a frame of the picking machine, the lifting frame is arranged between the two guide rails in a vertically movable mode, the driving mechanism is connected with the lifting frame, and the rear towing frame is hinged with the lifting frame and is in guide fit with the two guide rails; when the lifting frame is at the upper working position, the rear towing frame is synchronously at the upper working position and is in a lifting state; when the lifting frame is at the lower working position, the rear towing frame is synchronously at the lower working position and is in a declination unloading state.

2. The self-propelled harvest pickup of claim 1, wherein: the picking chain harrow comprises side chains, a middle chain and a plurality of chain harrow rods which are arranged in parallel at intervals, wherein the two ends of each chain harrow rod are fixedly connected with the side chains, and the middle part of each chain harrow rod penetrates through and is rotatably connected with the middle chain; the side chains and the middle chain are rotatably supported by the picking rack; the chain harrow pole includes many polished rods and the support pull rod that the equidistant setting, and wherein polished rod and the periphery that holds in the palm the pull rod all compound the parcel have the rubber layer to hold in the palm the rubber layer outside of pull rod and make the multirow finger-like rubber stick of staggered arrangement.

3. The self-propelled harvest pickup of claim 1, wherein: a plurality of fixed cross beams are fixedly arranged in the middle of the picking rack, a plurality of side chain rollers for rolling and supporting side chains are rotatably connected to the side wall of the picking rack, and a chain shaking roller for supporting and shaking a chain rake rod is rotatably connected to the middle of the side wall of the picking rack; a plurality of middle chain rollers for supporting the middle chain are rotatably arranged on the fixed cross beam.

4. The self-propelled harvest pickup of claim 1, wherein: the first power unit comprises a first hydraulic motor, a driving shaft and a driven shaft, wherein two ends of the driving shaft and the driven shaft are respectively rotatably connected with the picking table, and the driving shaft and the driven shaft are rotatably sleeved with the chain harrow; the first hydraulic motor is fixedly arranged on the side wall of the picking platform, and the output end of the first hydraulic motor is in power connection with one end of the driving shaft through a transmission chain; the second power unit comprises a second hydraulic motor, a driving chain, a driven chain and a plurality of fluted discs with the same diameter, wherein the fluted discs with the same diameter are respectively and coaxially and fixedly connected to the end parts of the first screen roller and the second screen roller; the output end of the second hydraulic motor and the fluted disc of the second screen roller are wound with a driving chain, and the fluted disc of the second screen roller and the fluted disc of the first screen roller are wound with a driven chain.

5. The self-propelled harvest pickup of claim 1, wherein: the top end of the fixed pipe is fixedly welded with the fixed plate along the radial direction, and the fixed plate is bound and fixed with the cross beam of the door-shaped fixed frame through the U-shaped bolt.

6. The self-propelled harvest pickup of claim 1, wherein: the conveyer comprises a conveyer frame, the conveyer frame is fixed on a frame of the picking machine, a bottom plate for receiving soil and sundries is fixed below the conveyer frame, and a conveying chain harrow is arranged in the conveyer frame; the conveying chain harrow comprises a left rubber chain and a right rubber chain which are arranged in parallel, a circle of harrow bars which are connected to the two rubber chains in a crossing way and are uniformly arranged according to a set distance, and a plurality of rubber harrow plates which are uniformly and vertically fixed on the harrow bars at intervals; except the harrow rods for fixing the rubber harrow plates, other harrow rods are formed by wrapping rubber sheaths outside metal rods; a soil falling space is arranged between the adjacent harrow bars; the left side and the right side of the front end in the conveyor frame are respectively fixed with a driven wheel, the rear end of the conveyor frame is provided with a driving shaft which is transversely arranged, two ends of the driving shaft are provided with driving wheels, and two rubber chains are respectively connected with the driving wheels and the driven wheels on the corresponding sides, so that the conveying chain harrow is integrally supported in the conveyor frame in a manner that the front section is inclined upwards and the rear section is horizontally arranged; tow belt wheels are arranged below the upper stroke section and the lower stroke section of the two rubber chains.

7. The self-propelled harvest pickup of claim 6, wherein: an air suction type impurity removing device is arranged above the crop conveying surface on the chain conveyor, and comprises an impurity removing housing, a crushing device and an impurity removing fan; the impurity discharging housing is formed by connecting a crushing device mounting section, a fan mounting section and an impurity discharging section, and the crushing device mounting section is transversely erected and mounted above the conveyor frame; the lower end of the smashing device mounting section is provided with a sundries suction port aligned with the conveying chain harrow, one end of the smashing device mounting section is a closed end, the other end of the smashing device mounting section is connected and communicated with the suction end of the fan mounting section, the discharge end of the fan mounting section is connected and communicated with the sundries discharge section, and the outer end of the sundries discharge section forms a sundries discharge port; the suction end and the discharge end of the fan mounting section are arranged on two vertical end surfaces;

the crushing device is arranged in an inner cavity of the crushing device mounting section, and the impurity removing fan is arranged in an inner cavity of the fan mounting section.

8. The self-propelled harvest pickup of claim 7, wherein: the crushing device comprises a movable cutter shaft, a plurality of movable cutters, a fixed cutter frame and a plurality of fixed cutters; one end of the movable cutter shaft is rotatably supported at the closed end of the crushing device mounting section and extends out of the closed end, and the other end of the movable cutter shaft is coaxial with a fan shaft of the impurity removing fan and rotatably supported at the end part of the fan mounting section; the plurality of movable cutters are uniformly distributed and fixed on the movable cutter shaft along the axial direction, the movable cutters are arranged in a staggered manner along the circumferential direction, the fixed cutter frame is arranged on one side of the movable cutter shaft in parallel and fixed in an inner cavity of the installation section of the crushing device, the plurality of fixed cutters are fixed on the fixed cutter frame along the axial direction, and the plurality of movable cutters and the plurality of fixed cutters are opposite one by one to form a plurality of groups of cutting units; the extension end of the movable cutter shaft is an impurity removal power input end which is provided with a belt wheel and is in transmission connection with power transmission branches of other parts of the picking machine through a transmission belt; or the impurity removing power input end of the movable cutter shaft is directly connected with the driving motor; the impurity removing fan is composed of a fan shaft and a plurality of fan blades fixedly installed on the fan shaft.

9. The self-propelled harvest pickup of claim 1, wherein: the inner sides of the two tracks are respectively provided with a lifting motion track groove and a rear bracket motion track groove which are oppositely arranged, the lifting motion track groove is a vertical straight groove with equal groove width, and the rear bracket motion track groove is composed of an upper vertical track groove section with equal groove width and a lower track groove section with gradually increasing groove width from top to bottom;

the left side and the right side of the lifting frame are provided with main guide wheels, the main guide wheels on the two sides and the lifting motion track grooves of the two tracks respectively form embedded sliding fit, so that the lifting frame is supported between the two tracks in a vertically movable manner; two auxiliary guide wheels which are arranged up and down are respectively arranged at the positions, close to the left side and the right side, of the rear end of the lifting frame, and the auxiliary guide wheels at the two sides are respectively in sliding contact with the inner side surfaces of the rails at the corresponding sides;

the rear towing bracket consists of a towing bracket main body and a towing bracket platform which is fixed on the towing bracket main body and used for supporting the collection bag; the lower part of the front end of the towing bracket main body is hinged with the lifting bracket, the two sides of the upper part of the front end of the towing bracket main body are provided with towing bracket guide wheels, and the towing bracket guide wheels on the two sides are respectively embedded into the rear towing bracket moving track grooves corresponding to the side tracks to form guiding cooperation.

10. The self-propelled harvest pickup of claim 9, wherein: the driving mechanism comprises a hydraulic cylinder and a lifting chain, the hydraulic cylinder is fixedly arranged at the upper end of the rack along the front-back direction in a mode that a cylinder rod extends forwards, the front end of the lifting chain is fixedly connected with the rack, and the rear end of the lifting chain is fixedly connected with the lifting frame; the lifting chain sequentially winds through a horizontal steering guide wheel, a horizontal steering vertical guide wheel and a vertical steering guide wheel from the front end to the rear end of the lifting chain; the horizontal steering guide wheel is rotatably supported on a first wheel frame, the first wheel frame is fixed at the cylinder rod end of the hydraulic cylinder, the horizontal steering vertical guide wheel is rotatably supported on a second wheel frame, the second wheel frame is fixed below a standing platform of the sorting conveying table, the vertical steering guide wheel is rotatably supported on a third wheel frame, and the third wheel frame is fixed on a transverse connecting rod of the two tracks.

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