44 results about "Tuber crops" patented technology

The utility model relates to the technical field of seeding equipment, in particular to an on-off control mechanism for a potato direct insertion type dibbler. A chain transmission component and a dibbler on-off control device are arranged on a middle bearing seat of the dibbling wheel, the driving land wheel drives the chain transmission component, and the chain transmission component drives the dibbler on-off control device to work; the potato seed tubers are guided into a dibbler opening and closing control device for dibbling; according to the structure, sowing of potato tubers is effectively controlled in a hole sowing fixed-point opening mode, the controllability of seed metering and hole sowing of tuber crops is improved to the maximum extent, and the sowing uniformity is improved.

The invention discloses a tuber crop harvester, and relates to the technical field of crop harvesting.The tuber crop harvester comprises two movable bottom plates, mounting plates are fixedly connected to the side walls of the top ends of the two movable bottom plates, and first electric sliding rails are fixedly connected to the inner walls of the mounting plates; first sliding plates are slidably connected to the side walls of one ends of the first electric sliding rails correspondingly, and supporting plates are fixedly connected to the side walls of one ends of the two first sliding plates correspondingly. When Chinese yam needs to be harvested, soil around the Chinese yam is excavated to the outer side of the collecting cylinder through the excavator bucket, the outer surface of the Chinese yam is continuously exposed, the outer surface of the Chinese yam is completely exposed to the outer side along with continuous deep excavation of the excavator bucket on the soil, and at the moment, the Chinese yam is conveyed to the upper portion of the collecting cylinder through the clamping plates; the situation that when the digging knife squeezes the Chinese yam and soil outside the Chinese yam into the hollow knife rod, the soil squeezes the Chinese yam, the surface of the Chinese yam is damaged by soil blocks or stones, and the quality of the Chinese yam is affected is prevented.

The invention belongs to the technical field of intelligent navigation of agricultural machinery, and particularly relates to an autonomous navigation system of field unmanned transportation equipment after potatoes (such as potatoes and sweet potatoes) are harvested, in particular to a potato operation line identification method based on binocular camera multi-modal information dynamic weighting. Aiming at a complex field environment (soil is loosened and turned over, scattered potato blocks / weeds are mixed, and an original ridge-shaped structure is locally damaged) after the operation of a harvester, a ridge line track required by the driving of a transport vehicle is difficult to stably identify in a scene of strong light overexposure, weak light noisy points and shadow alternation by a traditional visual method. According to the method, an IntelRealSenseD456 active stereoscopic vision binocular camera is carried, RGB images and depth information are fused in real time, and multi-modal data are dynamically weighted based on illumination intensity, so that the robust perception capability of the unmanned transport vehicle on the geometric boundary of the potato ridge is improved, the vehicle is ensured to accurately run along a harvested field ridge operation line, and the situation that the potato blocks are rolled and scattered or deviated from a path is avoided.

The utility model discloses a tuber crop harvester which comprises a machine frame, the machine frame is a supporting mechanism of the harvester, and the machine frame is connected with a rear suspension system of a tractor through a three-point suspension device. A vibration bionic digging mechanism, a power and transmission mechanism, a vibration lifting mechanism, a secondary vibration cleaning and impurity removing mechanism and a walking mechanism are sequentially arranged on the machine frame from front to back. According to the rhizome crop harvester, feature forms of the head and the dorsal fins of the mullet are extracted for simulation, numerical simulation is conducted on motion of the head and the dorsal fins of the mullet through a CFD method, a guide line curvilinear equation of a bionic digging shovel is obtained, a contour curve of the bionic digging shovel is obtained through curve fitting, and the bionic digging shovel is designed; the bionic digging shovel plays a good role in diversion and drainage of crushed soil, resistance concentration in the digging process is reduced, and the soil crushing rate is increased.

The invention provides an integrated combine harvester for tuber crops and onions. The integrated combine harvester comprises a compacting and seedling killing device, a digging and pulling device, a ground breaking and seedling picking device and a packaging device, the compacting and seedling killing device is used for completing preparation work before tuber digging and onion pulling operation, not only can compact soil ridges of tuber crops, but also can cut off seedlings of onions; the digging and pulling device 2 is used for digging tuber crops or onions from soil; the soil breaking and seedling picking device 3 is used for removing impurities difficult to separate in harvested mixtures in the conveying process, the packaging device 4 is installed at the tail of the machine body frame 5 and used for collecting separated tuber crops or onions, packaging the tuber crops or onions and then unloading the tuber crops or onions to the field, and shutdown unloading is avoided while skin breaking damage is reduced. High-efficiency and high-performance harvesting of tuber crops and onions is achieved, meanwhile, the labor cost during harvesting is remarkably reduced, and the economic benefits of farmers for planting tuber crops and onions are increased.

The invention relates to the technical field of tuber crop harvesting, and discloses a front throwing roll shaft type underground tuber crop harvesting device which comprises a rack mounted on a rear self-propelled sorting platform through a connecting mechanism, and the connecting mechanism is used for adjusting the mounting angle of the rack. An excavating mechanism and a conveying and crushing mechanism are sequentially arranged from the front end to the rear end of the rack. The digging mechanism and the conveying and soil crushing mechanism are arranged on the rack, digging and rhizome and soil separation can be completed at a time, conveying is conducted for follow-up sorting, the rhizome harvesting efficiency is improved, and the manual labor amount is reduced; the lifting and the angle of the front harvesting device can be adjusted by connecting the connecting mechanism with the rear self-propelled sorting platform, so that the digging depth of the front harvesting device is adjusted. The first-stage shifting roller unit adopts the design of alternating large and small shifting teeth, so that the crushed soil collision capability is improved; and by adopting the contractive conveying channel, the change of the working width can be realized under the condition of not changing a subsequent machine body, so that the improvement of the adaptability is realized.

The utility model discloses an agricultural disc type blanking and fertilizing linkage mechanism for tuber crops, which mainly comprises a driving dial, a blanking grooved pulley, a fertilizing grooved pulley, a blanking tray, a fertilizing tray, a rotating shaft, a blanking rotating shaft and a fertilizing rotating shaft, the rotating shaft is positioned between the blanking rotating shaft and the fertilizing rotating shaft, and the driving dial is mounted on the rotating shaft; a discharging tray and a discharging grooved pulley are mounted on the discharging rotating shaft, a fertilizing tray and a fertilizing grooved pulley are mounted on the fertilizing rotating shaft, and the driving dial rotates to drive the discharging grooved pulley and the fertilizing grooved pulley to rotate respectively, so that discharging and fertilizing are completed. The disc type discharging and fertilizing linkage mechanism for the agricultural tuber crops is compact in structure, flexible to adjust, capable of sowing the crops at different intervals and reasonably arranging the feeding positions of seeds and fertilizers, and high in practicability.

The utility model relates to the field of seedling planting, in particular to an agricultural seedling planting and cultivating device, which adopts the technical scheme that the agricultural seedling planting and cultivating device comprises a main box body, an auxiliary box body is rotatably mounted on one side of the main box body, a first grid is arranged on one side, close to the main box body, of the inner wall of the auxiliary box body, and a second grid is arranged on one side, close to the auxiliary box body, of the inner wall of the main box body; the seedling culture box has the advantages that the auxiliary box body and the main box body are separated through rotation, and the growth condition of roots of rhizome crop seedlings in the main box body is observed through the glass panel in the center of the second grid, so that the seedling culture box is simple in structure, convenient to use and high in practicability. The effect of helping workers to visually observe the root growth condition under the soil is achieved, the factors such as soil density, air permeability and moisture distribution are adjusted in time according to the root growth condition, diseases and pests can be found and treated in time, and healthy growth of seedlings of rhizome crops such as peanuts and potatoes is guaranteed; and the yield of rhizome crops is greatly improved.

The utility model discloses a tuber crop cleaning and sorting machine which comprises a machine frame, a feeding hopper is installed above the left side of the machine frame, a screening device is correspondingly arranged below the feeding hopper, a screening device motor is installed inside the machine frame, a winnowing device is arranged above the right side of the machine frame, and the bottom of the winnowing device corresponds to the tail end of the screening device. A traction frame is installed on the outer side of the bottom of the rack, and a polishing device motor is arranged in the right side of the rack. The tuber crop cleaning machine integrates screening, specific gravity impurity removal and flexible polishing, and efficient dry type cleaning of adherends on the surfaces of tuber crops is achieved through mutual replacement movement and rolling friction in the fluidization process. The dry-type cleaning technology avoids the problems of high water consumption, low efficiency, high site requirement, easy generation of secondary pollution and large subsequent drying workload during water washing treatment, and has the characteristics of being capable of being used in the field and directly returning removed materials to the field.

The invention discloses a flexible conveying and separating device of a rhizome harvesting machine, and particularly relates to the technical field of agricultural machines. Comprising two transmission chain wheels, a transmission rotating shaft is arranged between the two transmission chain wheels in a penetrating mode, and the two transmission chain wheels are symmetrically arranged on the transmission rotating shaft; a driven rotating shaft is arranged between the two driven chain wheels in a penetrating mode, and the two driven chain wheels are symmetrically arranged on the driven rotating shaft; the two chains are respectively connected between the transmission chain wheel and the driven chain wheel on the same side; the multiple supporting rods are connected between the two chains in an inserted mode; and the two non-circular chain wheels are arranged between the transmission chain wheel and the driven chain wheel on the same side, and a first rotating shaft is connected between the two non-circular chain wheels. By the adoption of the technical scheme, the problem that when an existing conveying and separating device is used for separating the rhizome crops, the skin of the rhizome crops is prone to being damaged is solved, the separation cost of the rhizome crops is reduced, and the quality is improved.

The application discloses a kind of unmanned aerial vehicle-independent tuber crop ridge line high-precision determination method, comprising: obtaining reference object position data;Different tuber crops are photographed based on the reference object position data, and a plurality of tuber crop images are obtained;The tuber crops in the plurality of tuber crop images are framed, and a plurality of tuber crop points are obtained;The plurality of tuber crop points are fitted, and a fitting line is obtained, based on the fitting line and the reference object position data, a plurality of intersection points are obtained, the plurality of intersection points are connected, and an intersection point line is obtained, and the intersection point line is fitted, and a tuber crop ridge line is obtained.The application can be used for automatic driving unmanned agricultural machine to harvest tuber crops, and is effective and convenient.

A kind of crop digging depth control system and method based on ground penetrating radar belong to wisdom agricultural machinery field.System includes vehicle body module, excavating mechanism, ground penetrating radar, lifting mechanism and control module.Ground penetrating radar detects crop root system buried depth by relative time difference method, and target depth is calculated in combination with safety margin;Control module adopts fuzzy self-adaptive PID algorithm, dynamically adjusts control parameters according to target depth and actual depth deviation, drives electric push rod to adjust digging shovel into soil depth, and realizes closed-loop control.The present application can sense crop underground position in real time, automatically adapt to soil condition change and terrain undulation, effectively avoid over-shallow missed digging or over-deep damage, significantly improve harvesting completeness and reduce energy consumption, and is suitable for tuber crops harvesting.

The invention relates to a separating device for crops, in particular tuberous crops, preferably potatoes, by means of which separating material is separated from a material stream containing products and separating material, in particular in the form of stems and leaves, having at least one conveying device forming a conveying path, at least one part of the material flow travels along the conveying device during operation; and at least one fan assembly having at least one fan and at least one nozzle assembly connected to the fan, at least one nozzle of the nozzle assembly being oriented towards the conveying path, a suction device having a suction hood which is open towards the conveying path and has a suction opening, the device is used for sucking and separating materials.

The invention discloses a multi-row synchronous punching device for tuber crop film mulching, and belongs to the technical field of agricultural instruments. Comprising a film laminating machine body, a roller assembly is rotationally installed on the film laminating machine body, and a punching assembly is installed on the roller assembly; the punching assembly comprises three sets of supporting plates and a plurality of earth cutting cylinders slidably connected with the roller assembly, guide columns are rotationally connected to the earth cutting cylinders, and the guide columns are inserted into the corresponding supporting plates and move along a set track. The three sets of supporting plates are installed on the rod assembly, and the rod assembly is rotationally installed on the roller assembly and fixed through a limiting piece. Through the design of the three sets of earth cutting cylinders, hole forming operation of multiple rows of planting holes can be completed at a time, the film covering and hole forming efficiency is remarkably improved, the rod assemblies and the supporting plates are adjusted in a linkage mode, the depths of all the earth cutting cylinders can be adjusted in a unified mode, operation steps are simplified, and the device is suitable for large-scale farmland operation.

The invention relates to the technical field of potato combined harvesting and sorting machines, in particular to a potato combined harvesting and sorting machine capable of automatically cleaning soil and sorting. Comprising a machine body, and the machine body comprises an excavating and conveying part, a transferring part and a sorting part which are arranged at intervals from front to back; the tuber crop sorting machine is characterized in that the sorting part comprises a sorting mechanism, and the sorting mechanism comprises a first soil removing sorting roller, a first sorting screen and a second sorting screen which are arranged from top to bottom; the first soil removing and sorting roller is used for screening out small fruits and discharging the small fruits out of the machine body through the first sorting plate; the second separating screen is used for screening the large fruits into a second collecting box at the machine body; the third separating screen is used for separating the first medium fruits and the second medium fruits into a third collecting box and a fourth collecting box on the machine body. The sorting mechanism is integrated on the machine body, so that the harvested tuber crops can be sorted in time while the machine body advances to dig the tuber crops.

The present application relates to a kind of self-propelled deep-rooted tuber crop combine harvester of excavating and separating device middle arrangement type, including track walking platform, lifting and hanging platform, oscillating excavating and separating device, pick-up transport system, material collecting device.The present application arranges oscillating excavating and separating device in the middle of track walking platform, effectively improves the stress of unit and improves the operation performance of track chassis;Lifting and hanging platform can drive oscillating excavating and separating device vertical lifting and can dynamically adjust the inclination of oscillating excavating and separating device rack, realizes the dynamic change of excavating and separating device grid into the soil angle, improves the soil performance of excavating and separating device grid;Oscillating excavating and separating device and chain type lifting device all use the vertical movement method of limiting, simplify the whole machine structure scheme and motion control strategy;Using modular design idea, oscillating excavating and separating device completes the excavation and root-soil separation of deep-rooted tuber crop and lays root tuber to ground, pick-up transport system completes the pick-up, lifting and transport work of ground root tuber and transports root tuber to material collecting device.

The invention relates to a vertical farming system designed to maximise the use of agricultural space while providing an effective solution for tuber crops and other, similar crops. The system comprises a cylindrical steel column (1) which is fixed to a concrete base (17) and on which metal supports are mounted, the supports being capable of holding racks (4) for pots (3). Each rack (4) can contain from two to eight pots (3), thereby providing flexibility for different crops. The racks (4) are arranged in a circular manner around the column (1), allowing optimal use of space.

The present invention relates to a self-propelled deep-rooted tuber crop combine harvester, comprising a vibrating excavation component, an excavation component lifting device, a transport and attachment platform, a key screen separation component, a separation component lifting device, and a multi-stage flexible transport collection device. The excavation component lifting device and the separation component lifting device are fixed to the transport and attachment platform. The vibrating excavation component is vertically lifted and lowered by the excavation component lifting device, and the key screen separation component is driven by the front and rear swing arms of the separation component lifting device to swing and lift as a whole. The working state of the harvester is divided into six stages: mobile transportation, preparation for burial, burial of the excavation component, normal operation, excavation component unburial, and component reset. The movement and position of the vibrating excavation component and the key screen separation component in each stage are controlled according to a certain plan. Based on the principles of vibration-driven drag-reducing excavation and staggered vibration separation, this invention utilizes a vertical lift configuration for the vibrating excavation component and a variable-position swing lift configuration for the key-screen separation component. This improves the stress conditions on the excavation components, meeting the requirements for excavating and harvesting deep-rooted crops. It simplifies the structural components for root-soil separation and lifting and transport, and optimizes their spatial layout. This enables vibration-driven drag-reducing excavation of deep-rooted stem crops, efficient root-soil separation with large soil volumes, and low-loss throwing and transport of long stems, providing a new solution for the combined harvesting of deep-rooted stem crops such as licorice. This invention is applicable to the harvesting of a variety of root crops and has promising prospects for widespread application.

The invention discloses a floating type cyperus esculentus digging table, a harvester and a control method, and belongs to the technical field of tuber crop harvesting.The digging table comprises a machine frame, a rotary tillage assembly is installed at the front end of the machine frame, and a lifting sieve located behind the rotary tillage assembly is installed in the middle of the machine frame; a hinge seat is mounted at the upper part of the rear end of the rack; the front end of a hydraulic cylinder hinged to the machine body is hinged to the lower side of the rear portion of the machine frame. A driving motor is installed on the machine frame, an output shaft of the driving motor is connected with a first chain transmission mechanism and a second chain transmission mechanism, and the first chain transmission mechanism is connected with a transmission shaft at the rear end of the lifting screen. And an angle sensor is mounted on the rack. According to the mandulapalka harvester, the digging depth can be accurately controlled, the soil digging amount is reduced, oil consumption is reduced, the strong soil screening capacity is achieved, the soil content conveyed to the harvester can be greatly reduced, and the mandulapalka harvesting efficiency and quality are improved.

The invention provides a tuber crop skin breaking rate prediction method based on an accumulative damage model, and the method comprises the steps: taking the force, speed, time, energy and other parameters of tuber crops in the mechanical harvesting and conveying process as the input; the instantaneous damage rate of the friction and abrasion channel and the instantaneous damage rate of the impact and contusion channel are calculated through the friction and abrasion channel and the impact and contusion channel respectively, meanwhile, the long-term friction and instantaneous impact effects are represented, and the mechanical mechanism of tuber crop skin breaking is completely described; based on the instantaneous damage rate, establishing an accumulated damage rate model, converting the tuber crop epidermis damage process into a quantifiable energy damage evolution model, and calculating an accumulated damage degree; calculating a predicted value of the skin breakage rate based on a probability mapping function; compared with the prior art, the method has the advantages that the experiment workload is obviously reduced, the tedious multi-parameter fitting process is avoided, and meanwhile, by optimizing the friction sensitivity coefficient and the impact sensitivity coefficient, the method can be used for predicting the skin breaking rate of various tuber crops.

The utility model discloses a device for driving a furrowing plowshare to move based on a connecting rod mechanism, which is suitable for furrowing operation of tuber crops and realizes adjustment of furrowing depth. The whole device is composed of a steering engine driving module, a connecting rod mechanism, a ditching plowshare mechanism and a sliding block guide rail mechanism. The steering engine drives the steering engine disc to rotate, the gear is fixed to the steering engine disc, the steering engine is controlled to rotate forwards and backwards by writing pulse signals to directly drive the connecting rod to move, and then the plowshare is indirectly controlled to move up and down. The device for driving the ditching plowshare to move based on the connecting rod mechanism is flexible and accurate in adjustment, the ditching depth can be adjusted according to different planted crops and different terrains and environments, and it is guaranteed that the mechanical property is high, transmission is large and the ditching effect is good during ditching.

1. The name of the design product: tuber planting vehicle. 2. The use of the design product: the product design is used for planting potato tuber crops, which can change the horizontal and vertical spacing of crop planting, and has the functions of plowing, seeding and covering. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective drawing. 5. Other circumstances that need to be explained: the baffle is made of transparent material.

The utility model relates to the technical field of agricultural planting, in particular to an anti-rotten-root submerged planting plate which comprises an outer supporting frame, a submerged planting groove is formed in the lower end of the outer supporting frame, waterproof cloth is arranged on the inner side of the submerged planting groove, a nylon planting net is arranged above the waterproof cloth, and the nylon planting net is arranged above the outer supporting frame. First supporting rods are arranged on the front side and the rear side of the submerged planting groove, second supporting rods are arranged on the sides of the first supporting rods, and a fruit supporting platform is arranged at the upper ends of the second supporting rods. The submersible type planting groove is used for carrying out submersible type supporting on waterproof cloth, planting soil and crops, the gravity center of the outer supporting frame is centered, the stability of the outer supporting frame in the lifting process is improved, meanwhile, the air permeability of the crops in the planting process is improved, fruit supporting platforms are arranged on the two sides, fruit supporting and seedling breeding are facilitated, and the planting efficiency is improved. The planting plate is particularly suitable for planting deep-root or underground tuber crops, and has the advantages of no root rot, no accumulated water and thorough oxygen feeding.

The utility model relates to a multi-stage separation type ridge culture rhizome crop harvesting device which comprises a vehicle body and is characterized in that a soil screening assembly used for bearing and screening crops is arranged in the vehicle body, the soil screening assembly comprises a screen, the peripheral side of the screen is connected to the vehicle body through an elastic plate, top plates are symmetrically arranged on the two sides of the screen, and the top plates are arranged on the vehicle body. A sliding rod extending in the inclined direction is vertically arranged on each top plate in a penetrating and sliding mode, a sleeve is fixedly connected to the bottom of each sliding rod, an eccentric wheel for driving the corresponding sleeve to push and pull the corresponding sliding rod in a reciprocating mode is arranged in each sleeve, and the eccentric wheels penetrate through the same driving rod and are in linkage; a conveying belt is arranged below the screen, a stirring assembly used for circularly stirring the inner surface of the conveying belt is arranged between the upper layer and the lower layer of the conveying belt, and the multi-stage separation type ridge culture rhizome crop harvesting device is reasonable in structure, high in adaptability and capable of effectively protecting crops.

The invention relates to a separating device assembly for a harvester for tuberous and tuber crops, in particular for a potato or onion harvester, comprising: at least one revolving conveying element through which harvest can be conveyed; the first separating device is provided with a first separating device support, and the first separating device is arranged above the conveying element, so that the harvest to be conveyed is processed in an operation area on the conveying element. The invention relates to a separating device assembly for a motor vehicle, comprising at least one first adjusting device arranged on a first separating device holder, at least one second separating device further provided with a second separating device holder, and at least one second adjusting device arranged on the second separating device holder, the first separating device can be moved out of the operating area by means of the first adjusting device, and the second separating device can be moved into the operating area by means of the second adjusting device.

The invention discloses tuber crop harvesting and collecting equipment, relates to the technical field of agricultural machinery, and provides the following scheme that the tuber crop harvesting and collecting equipment comprises a machine body and further comprises a harvesting mechanism arranged on one side of the machine body and used for picking up tuber crops; the conveying mechanism is arranged in the middle of the machine body and used for conveying the picked tuber crops; the soil cleaning mechanism is arranged in the machine body, located above the conveying mechanism and used for cleaning soil blocks on the surfaces of the tuber crops in the conveying process; the collecting mechanism is arranged on the other side of the machine body and used for collecting and transferring the cleaned tuber crops in a centralized mode, and one end of the collecting mechanism is connected with the conveying mechanism. According to the tuber crop harvesting and conveying device, tuber crops can be rapidly harvested, conveyed and collected, meanwhile, surface soil blocks of the tuber crops in the conveying process are cleared away and output, and therefore the tuber crop harvesting effect and efficiency are guaranteed, and meanwhile the later boxing effect and efficiency are guaranteed.

A dry fog generation system for applying anti-sprout agents, such as essential oils, to harvested tuberous crops, comprising: s) a chamber having a first input, a second input, and an output; b) at least one nozzle associated with the first input, configured to introduce a liquid material into the chamber as a fine mist; and c) a blower associated with the second input, configured to introduce an airflow into the chamber. The airflow induces a swirling motion within the chamber, causing the fine mist to mix and exit through the output in a controlled manner, wherein the swirling motion within the chamber is directed by an internal structure to control the filtration / limitation of droplet sizes that allowed to be applied as anti-sprout agents through the output.

The utility model relates to the technical field of agricultural machinery, in particular to a grading device of a tuber crop harvester, which comprises a machine body, a fixing plate is fixedly connected to the middle of one side of the machine body, and a grading component is fixedly connected to the top of the fixing plate. Through the arrangement of the servo motor, the connecting rod, the supporting frame, the grading rod, the spring and the clamping block, when the grading device is used, the connecting rod is driven to rotate back and forth through the operation of the servo motor, the supporting frame is driven to shake through the rotation of the connecting rod, and an operator can clamp the grading rod at different positions of the inner wall of the supporting frame according to requirements; and when the grading rods are clamped into the supporting frames, clamping blocks can be clamped into groove holes due to the tension of springs, so that the grading rods are fixed, the effect of adapting to different requirements is achieved, and the problems that due to different requirements, the grading sizes of the potatoes are different, the middle distance of a traditional grading device is difficult to adjust according to the requirements, and the grading size of the potatoes is not uniform are solved. And therefore, the device has limitation and is not convenient to use.

The utility model discloses a rhizome crop double-cutter harvesting module and a harvester. The rhizome crop double-cutter harvesting module comprises a driving connecting rod, a fixing shaft, a front side harvesting cutter and a rear side screening cutter. The front-side harvesting cutter and the rear-side screening cutter are fixed through a fixing shaft; the driving connecting rod is directly or indirectly connected with the front-side harvesting knife and the rear-side screening knife, and the front-side harvesting knife is provided with a harvesting knife handle and a knife shovel; an adjusting groove is formed in the harvesting cutter handle and used for adjusting the working height of the harvesting cutter on the front side; the rear screening knife comprises a screening knife handle and a screening grid, the screening knife handle is used for hinging, fixing and driving, and the screening grid is used for separating soil on the rhizome crops. The root crop double-cutter harvesting module is arranged on the machine frame, under the cooperation of the motor and the walking module, when root crops are harvested, the root crops are shoveled down through the harvesting cutter on the front side, and then shaking screening is conducted through the screening grid on the screening cutter on the rear side.

The invention relates to the technical field of agricultural machinery, in particular to an underground tuber crop digger which comprises a machine body, a fixed frame is fixedly connected to one side of the machine body, a movable frame is arranged on the fixed frame in a sliding fit mode, an overturning seat is rotatably connected to the movable frame, and a transmission mechanism is arranged on the overturning seat in a sliding fit mode. A transmission mechanism is arranged on the lower side of the overturning seat, a push-out plate is arranged on one side of the transmission mechanism, two vibration mechanisms are fixedly connected to the push-out plate, a soil shaking mechanism is rotatably connected to the push-out plate, and two Chinese yam digging plates are symmetrically arranged on the lower side of the overturning seat. The distance between the two Chinese yam digging plates can be adjusted, the Chinese yam digging device is suitable for different Chinese yam planting densities and soil environments, the integrity of Chinese yams can be protected to the maximum extent while the working efficiency is improved, damage is reduced, and the labor cost is reduced.