CN219373117U - Potato combine harvester - Google Patents

Abstract

The utility model discloses a potato combine harvester which structurally comprises a digging shovel assembly, a seedling cutting disc assembly, a front frame assembly, a front belt seedling winding wheel, a front clamping type conveying chain assembly, a seedling dividing roller, a sorting conveying chain assembly, a transition storage bin assembly, a potato ton bag hanging frame and a potato ton bag tray assembly. The digging shovel assembly is arranged in front of the potato combine harvester. The front clamping type conveying chain assembly is arranged on the front frame assembly and positioned at the rear end of the digging shovel assembly, and the rear end of the digging shovel assembly is connected with the sorting conveying chain assembly. The harvester has the advantages that: 1. the included angle between the front clamping type conveying chain combination and the ground is 40-68 degrees, so that the soil and potato separation is facilitated, and the working length of the harvester is shortened; the traditional vibrating conveying chain is changed, the damage rate of the potato skin is reduced, and the power consumption is reduced; 2. the combined mechanized operation of potato digging, potato separating, seedling pulling, sorting and bagging processes can be completed at one time, continuous operation without stopping machine is realized, agricultural time is saved, and the method is suitable for large-scale production.

Description

Potato combine harvester

Technical Field

The utility model relates to a crop harvester, in particular to a potato combine harvester.

Background

Harvesting potatoes is a labor-consuming, time-consuming, labor-intensive, short-term, agronomically demanding operation. At present, potato harvesters commonly used at home and abroad are divided into two types, namely a potato digger and a potato combine harvester. The former, potato excavator mainly comprises mechanisms such as digger blade, vibration separation sieve, walking wheel, can accomplish processes such as potato excavation, soil block and potato vibration separation screening, potato collection strip laying ground, and then, the potato is to be picked up by the manual work, sorted, bagging and transportation. The potato harvester is mainly suitable for land operation with small area, a large amount of auxiliary personnel are needed for operation, the excavated potatoes are urgently needed to be picked up manually for bagging, labor intensity is high, operation quality is poor, agricultural time is easy to be delayed, if the temperature is lowered, freezing damage of the potatoes is easy to be caused.

Along with the rapid development of industrialization, intensification and scale of potatoes, the requirements for realizing production standardization and income high efficiency on mechanical harvesting of potatoes are higher and higher. The domestic and foreign agricultural machinery scientific research production departments develop large and medium-sized potato combine harvesters with various types, which mainly comprise mechanisms such as digging shovels, lifting transportation, soil potato vibration separation screens, transverse lifting, loading, walking and the like. The potato digging machine can finish the operations of digging, vibrating, separating and screening soil blocks and potatoes, lifting, loading and transporting and the like (also has the manual sorting before lifting operation) at one time, has higher mechanization degree, and is suitable for large-area operation of large-scale farms and professional farmers. However, the working machine is huge, has a complex structure, and is not suitable for popularization and application. But also has a plurality of technical problems which are difficult to break. The following are summarized: 1. the potato skin is greatly damaged. The existing potato harvester basically adopts a shaking type potato separating mechanism, potatoes are subjected to the intense vertical vibration of a conveying chain in the whole process of machine tool potato separating and sorting conveying, the surfaces of the potatoes are easy to collide and damage, and the potatoes are not easy to store; 2. the power consumption is high. The consumption power of the conveying chain vibrating up and down is about 30-40% of the total power, and in the working process, the conveying chain parts are easy to damage due to uninterrupted vibration, and the service life of the machine tool is short when the machine tool is in a mussel state; 3. the machine has oversized shape and inconvenient field operation. In order to improve the soil-potato separating effect of the machine tool, the soil-potato separating mechanism is often lengthened or designed into a double-layer separating mechanism, so that the length of the machine tool is prolonged, the field operation difficulty of the machine tool is increased, and the idle stroke auxiliary time is prolonged; 4. and (5) picking up and bagging by manual work. When the existing potato digger is used for field operation, the potato diggers need to be picked up with the diggers manually to be bagged, some harvesters can be directly put into small bags, after the harvesters are filled, the potato bags are manually unloaded and then are collected and moved by other conveying equipment, or a container is additionally arranged behind the diggers, after the container is filled, the potato diggers to land or is inverted in other containers, so that the length of the machine is increased, the harvesting time is prolonged, the agricultural time is prolonged, the large-scale operation production is not suitable, and the mechanization degree is not high; 5. the potato seedling separation is not thorough. In view of the foregoing, there is a great need for improved harvesting machinery to accommodate the mechanized potato production needs.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a potato combine harvester, which aims at solving the problems of the existing potato harvester (excavator) one by one, realizes one-time completion of digging, soil and potato lifting separation, potato and seedling separation, manual sorting and ton bag loading, realizes continuous operation without stopping, and improves the degree of mechanized operation.

The technical problems of the utility model are solved by the following scheme: a potato combine harvester structurally comprises a digging shovel assembly, a seedling cutting disc assembly, a pressing roller, a front frame traction rod assembly, a front frame traction beam, a front transmission spline universal shaft, a front frame assembly, a front seedling winding wheel, a transmission gearbox, a front clamping type conveying chain assembly, a seedling dividing roller, a sorting conveying chain assembly, a transition storage bin assembly, a potato ton bag hanging frame, a potato ton bag tray assembly and travelling wheels.

The digging shovel assembly is arranged in front of the potato combine harvester and is used for digging potatoes in the ground, and the potatoes are pushed onto the front lower conveying chain by the aid of the front moving mechanism. The included angle between the digging shovel combination and the ground is 25-37 degrees.

The front clamping type conveying chain assembly is arranged on the front frame assembly and is positioned at the rear end of the digging shovel assembly, and the rear end of the front clamping type conveying chain assembly is connected with the sorting conveying chain assembly. The potato digger is used for lifting and conveying potatoes excavated by the excavating shovel combination upwards to the sorting conveying chain combination. The front clamping type conveying chain consists of a front upper conveying chain and a front lower conveying chain. The included angle between the front clamping type conveying chain combination and the ground is 40-68 degrees.

The front upper conveying chain is parallelly arranged above the front lower conveying chain, and structurally comprises a floating arm tensioning wheel combination, a supporting chain wheel combination, a front upper conveying chain guide wheel, a front upper conveying chain driving chain wheel, a front upper conveying chain conveying belt and a front upper conveying chain conveying rod. The front lower conveying chain structure comprises a front lower conveying chain tensioning wheel, a support chain wheel combination, a front lower conveying chain guide wheel, a front lower conveying chain driving chain wheel, a front lower conveying chain conveying belt and a front lower conveying chain conveying rod.

The front upper conveying chain conveying rod is transversely fixed on the front upper conveying chain conveying belt through a fixing bolt, and the front upper conveying chain conveying belt is connected with a front upper conveying chain guide wheel, a front upper conveying chain driving sprocket, a floating arm tensioning wheel, a tensioning wheel combination and a supporting sprocket combination and is driven by the front upper conveying chain driving sprocket to rotate. The front lower conveying chain conveying rod is transversely fixed on the front lower conveying chain conveying belt through a fixing bolt, and the front lower conveying chain conveying belt is connected with a front lower conveying chain driving sprocket, a front lower conveying chain guide wheel, a front lower conveying chain tensioning wheel and a supporting sprocket in a combined mode and is driven by the front lower conveying chain driving sprocket to rotate. The distance between the conveying rods of the front upper conveying chain and the distance between the conveying rods of the front lower conveying chain are equal, and the distances are 45-50 mm. Moreover, the front upper conveying chain conveyor belt and the front lower conveying chain conveyor belt are opposite in rotation direction and equal in running line speed, so that the front upper conveying chain conveyor rod and the front lower conveying chain conveyor rod are mutually corresponding and simultaneously run upwards, the design distance between the two corresponding conveying rods is 25-35 mm, and the effect is that the corresponding conveying chain conveyor rods can be used for conveniently clamping potatoes to convey upwards. The conveying rod of the conveying chain is made of high-carbon steel, the surface of the conveying rod is coated with rubber, the direct contusion of the potato skin is avoided, and the diameter of the conveying rod of the conveying chain is phi 8-12 mm.

The floating arm tensioning wheel assembly is arranged on the front frame assembly through a floating wheel shaft and a floating wheel shaft seat and is positioned in the front inner part of the front upper conveying chain; comprises a floating arm, a floating wheel, a floating arm shaft seat and a compression spring; the floating arm is arranged at two ends of the floating wheel shaft through a floating arm shaft seat and can rotate around the floating wheel shaft, the front end of the floating arm is provided with the floating wheel, the floating arm is provided with a spiral, a pressure adjusting nut and a compression spring are arranged on the floating arm, and the floating wheel is forced to press the front end of the front upper conveying chain through the compression spring.

The floating arm is used for tensioning the front upper conveying chain; secondly, the size of the feeding port can be changed elastically at any time according to the amount of the potatoes and soil which enter. When the amount of the potatoes is large, the potatoes squeeze the floating wheels, so that the floating arms are lifted upwards, and the feeding port is enlarged; when the potatoes enter the potato harvester normally, the compression spring bounces to press the floating wheel, so that the floating wheel compresses the front upper conveying chain conveyor belt downwards. The pressure of the pressure adjusting nut to the compression spring can be adjusted manually according to the yield of potatoes in the ground, so that the size of the feeding port is changed.

The seedling separating roller and the lifting ring seedling separating rod support are arranged at the rear end of the front clamping type conveying chain and are used for separating potato seedlings in potatoes.

The sorting conveying chain is installed on the rear frame in a combined mode and located at the rear portion of the front clamping conveying chain, and the structure comprises a sorting conveying chain, a sorting upper baffle plate and a manual sorting table. The two functions are as follows: firstly, continuing to separate soil from potato; secondly, the potato seedling and other large impurities in the potato are sorted out by manually standing on a manual sorting table, so that the potato is ensured to be clean before bagging.

The transition storage bin is installed on the rear frame in a combined mode and is located below the rear end of the sorting conveying chain combination, and the structure comprises a storage bin body, a scraper type conveying belt and a conveying belt power operating mechanism. The automatic potato harvester has the function that after the bags of tons are filled with potatoes, the operation of the scraper type conveying belt is stopped by manually operating the conveying belt power operating mechanism, and the harvested potatoes are temporarily placed in the bin body of the material containing box. At this time, the potato harvester can remove the potato ton bag without stopping the machine and continuing the operation. When empty ton bags are manually hung, the power operation mechanism of the conveyer belt is manually operated, so that the scraper conveyer belt operates to continuously fill potatoes into the ton bags. The machine tool can operate without stopping, so that the auxiliary time of the harvester for loading and unloading ton bags is saved, and the production efficiency of the machine tool is improved.

And the center lines of the sorting conveying chain combination and the transition storage bin combination are offset to the left of the center line of the machine tool by 300-500 mm. The purpose is to facilitate the potato bags which are put in the previous time of rolling and pressing when the harvester performs the next time of operation, and the operation without stopping can be achieved.

The potato ton bag hanging frame is arranged above two sides of the rear frame, the hanging frame is used for hanging ton bags to be convenient for containing potatoes, and the structure comprises a manual ton bag hanging hook and a hanging hook telescopic rod. The hook telescopic rod can move back and forth to adapt to the size of the ton bag.

The potato ton bag tray is installed on the rear frame in a combined mode and located below the potato ton bag tray, and the structure comprises a lifting oil cylinder, a hydraulic oil tank and an L-shaped roller type tray. The potato ton bag rack is matched with the potato ton bag rack, and the ton bag is supported so as to contain potatoes discharged by the transition storage bin combination. After the ton bags are filled with potatoes, or the potatoes are unloaded by a loader and directly sent to a transport vehicle; or the lifting oil cylinder is started manually to put down the L-shaped roller type tray, and the rear end of the L-shaped roller type tray sags, so that the ton bag automatically rolls to the ground. The device completely replaces manual picking and bagging operation, reduces auxiliary time for machine tool operation, and realizes continuous operation without stopping machine. The potatoes are directly put into ton bags for transportation after being harvested, the loading and unloading times are reduced, the maximum loading time can reach 800-1000 kg, the damage to the surfaces of the potatoes is greatly reduced, the commodity rate of the potatoes is improved, a huge loading box is omitted, the length of the machine tool is shortened, the machine tool is flexible to operate, and the transportation is simple and convenient.

The transmission principle of the utility model is that a main gearbox driving wheel extended out of the transmission gearbox drives a front lower conveying chain driving sprocket through a transmission belt, an intermediate driving wheel is arranged on the other side coaxial with the front lower conveying chain driving sprocket, one path of the transmission belt drives the front upper conveying chain driving sprocket, and the other path of the transmission belt drives a seedling dividing roller driving wheel. In addition, the middle driving wheel drives the sorting conveyer belt driving wheel and the scraper conveyer belt driving chain wheel through the driving belt.

The utility model has the advantages that: 1. the working procedures of potato digging, lifting, potato and soil separation, potato and seedling separation, sorting, manual sorting and bagging can be completed at one time, and the combined mechanized harvesting operation of potatoes is comprehensively realized; the working procedures of picking up, sorting, bagging and the like which are manually followed behind a potato harvester can be saved, the labor is greatly reduced, and the potato harvester is suitable for large-scale production; 2. the included angle between the front clamping type conveying chain combination and the ground is increased to 40-68 degrees, the working length of the whole machine tool is shortened, the machine tool is convenient for turning at the ground, the operation is flexible, the idle travel time is reduced, and the working efficiency of the machine tool is improved; 3. the front clamping type conveying chain and the sorting conveying chain are designed to be smooth-motion conveying chains, so that the conventional vibrating conveying chain is changed, power consumed by vibration is reduced, a conveying mechanism is not easy to damage, and potatoes are prevented from being damaged in working; 4. the harvester realizes direct bagging operation, and the potato harvester can unload potato ton bags under the condition of continuous operation without stopping, so that the working length of the machine is shortened; 5. the harvester is characterized in that manual sorting tables are additionally arranged on two sides of a sorting conveying chain combination, so that workers can randomly sort potato seedlings and other large impurities mixed in potatoes; 6. compared with the potato combine harvester of the same type at home and abroad, the potato combine harvester has the advantages of simple structure, small machine length, small and flexible machine type, and convenient manufacture, popularization and application.

Drawings

FIG. 1 is a front view of the potato combine

FIG. 2 is a top view of the potato combine

FIG. 3 is a schematic diagram of a front gripper conveyor chain assembly

FIG. 4 is an enlarged view of part of A in FIG. 3

FIG. 5 is a partial enlarged view of B in FIG. 3

FIG. 6 is a partial view of C in FIG. 5

FIG. 7 is a schematic view of a transitional storage bin assembly

Fig. 8 is a schematic view of a potato ton bag hanger and potato ton bag tray combination

Reference numerals illustrate:

1 digger shovel combination 2 seedling cutting disc combination 3 press roller 4 front frame traction rod combination 5 front frame traction beam 6 front transmission spline universal shaft 7 front frame assembly 8 front seedling winding wheel 9 transmission gearbox 10 front clamping type conveying chain combination 11 lifting ring seedling dividing rod support 12 seedling dividing rod support 13 sorting conveying chain combination 14 sorting upper baffle 15 transition storage bin combination 16 ton bag hanging frame 17 ton bag tray combination 18 rear frame 19 hydraulic oil tank 20 lifting oil cylinder 21 walking wheel 22 artificial sorting table 23 material containing bin 24 power operating mechanism 25 scraper type conveying belt 26 manual ton bag hook 27 hook telescopic rod 28L type roller tray 29 main gearbox driving wheel 30 seedling dividing rod driving wheel 32 intermediate drive wheel 33 sort conveyer belt drive sprocket 34 sort conveyer chain 35 scraper conveyer belt drive sprocket 11-1 front upper conveyer belt 11-2 front lower conveyer belt 11-3 floating arm tensioner combination 11-4 front upper conveyer belt drive sprocket 11-5 tensioner combination 11-6 front upper conveyer chain guide wheel 11-7 front lower conveyer chain guide wheel 11-8 front lower conveyer belt tensioner 11-9 front lower conveyer belt drive sprocket 11-10 support sprocket combination 11-11 front upper conveyer belt conveyer rod 11-12 front lower conveyer belt conveyer rod 11-13 front upper conveyer belt 11-14 front lower conveyer belt 11-15 floating wheel 11-16 floating arm 11-17 floating arm axle seat 11-18 compression spring 11-19 floating arm axle 11-20 floating axle seat.

In the figure: the arrow indicates the direction of belt travel.

The specific embodiment is as follows:

in order to more clearly illustrate the technical solution of the embodiments of the present utility model, a potato combine harvester will be described in detail below with reference to the accompanying drawings, so that the advantages and features thereof will be more easily understood by those skilled in the art, and thus the protection scope of the present utility model will be more clearly defined.

As shown in fig. 1 and 2, the potato combine harvester structurally comprises a digging shovel assembly 1, a seedling cutting disc assembly 2, a pressing roller 3, a front frame traction rod assembly 4, a front frame traction beam 5, a front transmission spline universal shaft 6, a front frame assembly 7, a front seedling winding wheel 8, a transmission gearbox 9, a front clamping type conveying chain assembly 10, a seedling separating roller 12, a sorting conveying chain assembly 13, a transition storage bin assembly 15, a potato ton bag hanger 16, a potato ton bag tray assembly 17 and a travelling wheel 21.

The digging shovel assembly 1 is arranged in front of the potato combine harvester, and is used for digging potatoes in the ground and pushing the potatoes onto the front lower conveying chain 11-2 along with the forward movement of the machine, and the included angle between the digging shovel assembly 1 and the ground is 25-37 degrees (delta).

As shown in fig. 3, the front clamping type conveying chain assembly 10 is mounted on the front frame assembly 7 and is positioned at the rear end of the digging shovel assembly 1, and the rear end of the front clamping type conveying chain assembly is connected with the sorting conveying chain assembly 13. The front clamping type conveying chain 10 consists of a front upper conveying chain 11-1 and a front lower conveying chain 11-2, and an included angle between the front clamping type conveying chain and the ground is 40-68 degrees (beta)

The front upper conveying chain 11-1 is arranged above the front lower conveying chain 11-2 in parallel, and structurally comprises a floating arm tensioning wheel combination 11-3, a tensioning wheel combination 11-5, a support chain wheel combination 11-10, a front upper conveying chain guide wheel 11-6, a front upper conveying chain driving chain wheel 11-4, a front upper conveying chain conveying belt 11-13 and a front upper conveying chain conveying rod 11-11. The front lower conveying chain 11-2 comprises a front lower conveying chain tensioning wheel 11-8, a supporting chain wheel combination 11-10, a front lower conveying chain guide wheel 11-7, a front lower conveying chain driving chain wheel 11-9, a front lower conveying chain conveying belt 11-14 and a front lower conveying chain conveying rod 11-12.

As shown in fig. 4 and 5, the front upper conveyor chain conveying rod 11-11 is transversely fixed on the front upper conveyor chain conveying belt 11-13 through a fixing bolt, and the front upper conveyor chain conveying belt 11-13 is connected with the front upper conveyor chain guide wheel 11-6, the front upper conveyor chain driving sprocket 11-4, the floating arm tensioning wheel 11-3, the tensioning wheel combination 11-5 and the supporting sprocket combination 11-10 and is driven by the front upper conveyor chain driving sprocket 11-4 to rotate. The front lower conveying chain conveying rod 11-12 is transversely fixed on the front lower conveying chain conveying belt 11-14 through a fixing bolt, is connected with the front lower conveying chain driving sprocket 11-9, the front lower conveying chain guide wheel 11-7, the front lower conveying chain tensioning wheel 11-8 and the support sprocket assembly 11-10, and is driven by the front lower conveying chain driving sprocket 11-9 to rotate and run. The distance between the conveying rods of the front upper conveying chain and the conveying rods of the front lower conveying chain 11-12 is equal to 45-50 mm (E). In addition, the rotation directions of the front upper conveyor belt 11-13 and the front lower conveyor belt 11-14 are opposite, and the running line speeds are equal, so that the front upper conveyor belt 11-13 and the front lower conveyor belt 11-14 correspondingly run upwards at the same time, and the design distance between the two corresponding conveyor rods is 25-35 mm (L). The conveying rod of the conveying chain is made of common round steel and engineering plastics, and the diameter of the conveying rod is phi 8-12 mm (ψ).

As shown in fig. 2, 4, 5 and 6, the floating arm tensioning wheel assembly 11-3 is mounted on the front frame assembly 7 through a floating wheel axle 11-19 and a floating wheel axle seat 11-20 and is positioned in the front inner part of the front upper conveying chain 11-1; comprises a floating arm 11-16, a floating wheel 11-15, a floating arm shaft seat 11-17 and a compression spring 11-18; the floating arm 11-16 is arranged at two ends of the floating wheel shaft 11-19 through the floating arm shaft seat 11-17 and can rotate around the floating wheel shaft 11-19, the front end of the floating arm 11-16 is provided with the floating wheel 11-15, the floating arm 11-16 is provided with a spiral, the pressure adjusting nut and the compression spring 11-18 are arranged, and the floating wheel 11-15 is forcedly pressed at the front end of the front upper conveying chain 11-1 through the compression spring 11-18.

The seedling separating roller 12 and the hanging ring seedling separating rod bracket 11 are arranged at the rear end of the front clamping type conveying chain 10.

As shown in fig. 1 and 2, the sorting conveyor chain assembly 13 is mounted on the rear frame 18 and is located at the rear of the front clamping conveyor chain assembly 10, and the structure includes a sorting conveyor chain 34, a sorting upper baffle 14 and a manual sorting table 22.

As shown in fig. 7, the transition storage bin assembly 15 is mounted on the rear frame 18 and is located below the rear end of the sorting conveyor chain assembly 13, and the structure comprises a material containing bin body 23, a scraper conveyor belt 25 and a conveyor belt power operating mechanism 24.

And the center lines of the sorting conveying chain combination 13 and the transition storage bin combination 15 are offset to the left of the center line of the harvester by 300-500 mm (S).

As shown in fig. 8, the potato ton bag hanger 16 is mounted above two sides of the rear frame 18, and the structure includes a manual ton bag hanger 26 and a hanger telescopic rod 27.

The potato ton bag tray combination 17 is arranged on the rear frame 18 and positioned below the rear of the transition storage bin combination 15, and structurally comprises a hydraulic oil tank 19, a lifting oil cylinder 20 and an L-shaped drum-type tray 28.

The transmission process of the utility model is that a main gearbox driving wheel 29 extending from the transmission gearbox 9 drives a front lower conveying chain driving sprocket 11-9 through a transmission belt 30, an intermediate driving wheel 32 is arranged on the other side coaxial with the front lower conveying chain driving sprocket 11-9, one path of the driving wheel drives a front upper conveying chain driving sprocket 11-4 through the transmission belt 30, and the other path of the driving wheel drives a seedling dividing roller driving wheel 31. The intermediate transmission wheel 32 drives the sorting belt drive sprocket 33 and the scraper belt drive sprocket 35 via the transmission belt 30.

Claims (7)

1. The structure of the potato combine harvester comprises a digging shovel combination, a seedling cutting disc combination, a pressing roller, a front frame traction rod combination, a front frame traction beam, a front transmission spline universal shaft, a front frame assembly, a front seedling winding wheel, a transmission gearbox, a front clamping type conveying chain combination, a lifting ring seedling dividing rod bracket, a seedling dividing roller, a sorting conveying chain combination, a transition storage bin combination, a potato ton bag hanger and a potato ton bag tray combination, and is characterized in that the digging shovel combination is arranged in front of the potato combine harvester;

the front clamping type conveying chain assembly is arranged on the front frame assembly and is positioned at the rear end of the digging shovel assembly, the rear end of the front clamping type conveying chain assembly is connected with the sorting conveying chain assembly, and the front clamping type conveying chain assembly consists of a front upper conveying chain and a front lower conveying chain;

the front upper conveying chain is arranged above the front lower conveying chain in parallel, and structurally comprises a floating arm tensioning wheel combination, a supporting chain wheel combination, a front upper conveying chain guide wheel, a front upper conveying chain driving chain wheel, a front upper conveying chain conveying belt and a front upper conveying chain conveying rod; the front lower conveying chain structure comprises a front lower conveying chain tensioning wheel, a support chain wheel combination, a front lower conveying chain guide wheel, a front lower conveying chain driving chain wheel, a front lower conveying chain conveyor belt and a front lower conveying chain conveying rod;

the front upper conveying chain conveying rod is transversely fixed on a front upper conveying chain conveying belt through a fixing bolt, and the front upper conveying chain conveying belt is connected with a front upper conveying chain guide wheel, a front upper conveying chain driving sprocket, a floating arm tensioning wheel combination, a tensioning wheel combination and a supporting sprocket combination and is driven by the front upper conveying chain driving sprocket to rotate; the front lower conveying chain conveying rod is transversely fixed on the front lower conveying chain conveying belt through a fixing bolt, and the front lower conveying chain conveying belt is connected with the front lower conveying chain driving sprocket, the front lower conveying chain guide wheel, the front lower conveying chain tensioning wheel and the support sprocket in a combined manner;

the floating arm tensioning wheel assembly is arranged on the front frame assembly through a floating wheel shaft and a floating wheel shaft seat and is positioned in the front inner part of the front upper conveying chain, and the structure comprises a floating arm, a floating wheel, a floating arm shaft seat and a compression spring; the floating arm is arranged at two ends of a floating wheel shaft through a floating arm shaft seat, the front end of the floating arm is provided with the floating wheel, the floating arm is provided with a spiral, a pressure adjusting nut and a compression spring are arranged on the floating arm, and the floating wheel is forced to be pressed at the front end of the front upper conveying chain through the compression spring;

the seedling dividing roller and the seedling dividing rod bracket of the hanging ring are arranged at the rear end of the front clamping type conveying chain;

the sorting conveying chain assembly is arranged on the rear frame and positioned at the rear part of the front clamping type conveying chain assembly, and the structure comprises a conveying chain, a sorting upper baffle plate and a manual sorting table;

the transition storage bin assembly is arranged on the rear frame and positioned below the rear end of the sorting conveying chain assembly, and the structure comprises a storage bin body, a scraper type conveying belt and a conveying belt power operating mechanism;

the potato ton bag hanging frame is arranged above two sides of the rear frame and structurally comprises a manual ton bag hanging hook and a hanging hook telescopic rod;

the potato ton bag tray combination is arranged on the rear frame and positioned below the transition storage bin combination, and the structure comprises a hydraulic oil tank, a lifting oil cylinder and an L-shaped drum type tray.

2. A potato combine as claimed in claim 1, wherein the digger blade assembly is angled from 25 ° to 37 ° to the ground.

3. A potato combine as claimed in claim 1, wherein the front gripper conveyor chain is inclined at an angle of 40 ° to 68 ° to the ground.

4. The potato combine as claimed in claim 1, wherein the distance between the front upper conveyor chain conveyor bars and the front lower conveyor chain conveyor bars is 45-50 mm.

5. The potato combine as claimed in claim 1, wherein the design distance between the front upper conveyor chain conveyor bar and the front lower conveyor chain conveyor bar is 25-35 mm.

6. A potato combine as claimed in claim 1, wherein the front upper conveyor chain conveyor bar and the front lower conveyor chain conveyor bar are coated with rubber having a diameter of 8-12 mm.

7. A potato combine as claimed in claim 1, wherein the centre lines of the sorting conveyor chain assembly and the transitional storage bin assembly are each offset to the left of the harvester centre line by 300-500 mm.