CN210959474U

CN210959474U - Two-section fritillary bulb harvester

Info

Publication number: CN210959474U
Application number: CN201921663603.4U
Authority: CN
Inventors: 宋江; 刘丽华; 王磊; 赵建秋; 田帅
Original assignee: Heilongjiang Bayi Agricultural University
Current assignee: Heilongjiang Bayi Agricultural University
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-07-10
Anticipated expiration: 2029-10-08

Abstract

A two-section fritillaria ussuriensis harvester relates to the technical field of underground small tuber mechanized harvesting, and comprises a front section and a rear section, wherein the front section comprises a first suspension mechanism, a screw mechanism, a soil scraping plate, a soil loosening hook, a soil separating plate, a transmission system and a first rack; the rear section comprises a lifting device, a drum screen, a secondary separation conveying screen, a collecting device, a transmission system II and a rack II. The two-section fritillaria ussuriensis harvester solves the problems of high soil content, screen blockage and incapability of fully utilizing sunny days in harvesting seasons for mechanical harvesting of fritillaria ussuriensis during harvesting, can weed and loosen hard covering soil on the surface layer, and achieves the effect of one machine with multiple purposes.

Description

Two-section fritillary bulb harvester

The technical field is as follows:

the utility model relates to a mechanized results technical field of underground nubble stem, concretely relates to two segmentation fritillary bulb harvesters.

Background art:

fritillary bulb, also called fritillary bulb, is one of fritillary medicinal materials and is the bulb of fritillary bulb of a two-year herbaceous plant of the family liliaceae. The fritillary bulb is divided into an underground bulb and an overground bulb, the fritillary bulb mainly has the medicinal value of the underground bulb, is shaped like an oblate disk, has the average size of 3-30 mm, is formed by holding 2-3 semilunar oblate phosphorus petals, is shaped like a poly-fritillary bulb and is flat, and therefore the fritillary bulb is named. The fritillary bulb is a traditional and precious bulk medicinal material in China, is an important commodity for earning foreign exchange in China, and is very popular in Chinese medicinal material markets at home and abroad. The artificial planting of fritillaria ussuriensis is mainly distributed in the areas of great, lesser Khingan and northeast Changbai mountain of Heilongjiang river, wherein Jilin's digestion, Hailin and Tieli planting have the largest area and form scale, and the method is a main means for local enrichment. Statistics shows that in 2006, the planting area of fritillaria ussuriensis, the three provinces in northeast, reaches 24 ten thousand mu, the yield is 17000 tons, and according to the price of 60 yuan/kg of fritillaria ussuriensis at that time, the economic benefit of billions yuan is created for medical farmers every year. In 2016, the inventor proposes to build the north medicine industry in importance, namely in 2016, in the development planning of the forestry industry in Heilongjiang province (2016-. The fritillary bulb harvesting is time-consuming and labor-consuming, as shown in figures 1 and 2, the harvesting timeliness is extremely strong, the production area is almost concentrated in 6-7 months, and the fritillary bulb cannot rot in the ground before being harvested in rainy season, so that a large amount of labor is employed by medical farmers when the fritillary bulb is harvested. The used tools comprise pickaxe, spade, dustpan, sieve, rake, etc. When the screening device is operated, firstly, soil on the uppermost layer of the fritillaria unibracteata ridges is scooped to one side by using a spade, then, the fritillaria unibracteata soil is scooped to a simple screening device by using a rake and a pickaxe, a plurality of fritillaria unibracteata rigidizing roots need to block the screening net in the screening process, the screening efficiency is low, and one person needs to brush the screening net for screening the fritillaria unibracteata soil each time. The fritillary bulb is sieved by sieves with different sizes according to the size of the fritillary bulb, and then the fritillary bulb can meet the requirements. According to statistics, the cost of fritillaria ussuriensis accounts for 1/4 of the total cost of fritillaria ussuriensis. In recent years, with the increase of labor cost and the difficulty of hiring, fritillaria harvesting has become a bottleneck problem of manual planting and enlargement of planting area of fritillaria. Therefore, the mechanical harvesting of fritillaria ussuriensis becomes the urgent need for fritillaria ussuriensis production, and medical farmers urgently hope that the mechanical technology can replace heavy physical labor, reduce the labor intensity of the medical farmers, improve the production efficiency of fritillaria ussuriensis harvesting, promote the income increase of the medical farmers and drive local economic development.

In order to realize the mechanical harvesting of fritillaria ussuriensis, a single-process mechanical harvesting operation is started by a medical farmer, the labor intensity is high, the production efficiency is low, the fritillaria ussuriensis can not be harvested at the most obtaining stage, and the economic benefit of fritillaria ussuriensis planting is reduced; in recent years, represented by Xinxiang Dilong pharmaceutical industry machinery limited company, backpack and self-propelled general particle medicinal material combine harvesters are developed, which are suitable for particle medicinal materials such as fritillaria ussuriensis, bulbus fritillariae cirrhosae, fritillaria thunbergii, rhizoma corydalis, pinellia ternate and the like, but the general backpack particle medicinal material combine harvester has the defects of overweight harvesting equipment and overlarge supporting power (a tractor with more than 100 horsepower), and simultaneously, the soil in fritillaria ussuriensis planting areas is sticky, so that the impurity rate is high, and the popularization and the application cannot be realized in late time; the self-propelled general particle medicinal material combine harvester has high cost, is not suitable for harvesting fritillaria ussuriensis, and has no report of popularization and application in fritillaria ussuriensis production areas; the harvest season of fritillaria ussuriensis in the production area of fritillaria ussuriensis is mostly 6-7 months every year, the fritillaria ussuriensis is often overlapped with rainy season, the number of clear days is mostly 3-5 days, the granular medicinal material combine harvester needs 2-3 days to harvest in the field, the soil humidity is about 60% during harvesting, the phenomenon of raining begins again always, so that part of fritillaria ussuriensis is not ready for harvesting, and the problems of high impurity rate and screen blockage are caused even if the fritillaria ussuriensis is harvested.

The utility model has the following contents:

the utility model aims at overcoming the weak point that above-mentioned prior art exists, and provide two segmentation fritillaria ussuriensis harvesters, it is high, stifled sieve of soil content when having solved fritillaria ussuriensis harvests, fails to make full use of the fine day in harvest season and carries out the problem of mechanical results to can weed and loose the hard loam in top layer, reach a tractor serves several purposes' effect.

In order to solve the problem existing in the background art, the utility model adopts the following technical scheme: the tractor comprises a front section and a rear section, wherein the front section comprises a first hanging mechanism, a screw mechanism, a soil scraping plate, a soil loosening hook, a soil separating plate, a transmission system and a first frame; the rear section comprises an elevating device, a rotary screen, a secondary separation conveying screen, a collecting device, a second transmission system and a second rack, the second rack is connected to a tractor through a second suspension mechanism, two sides of the second rack are respectively provided with a rack longitudinal beam, the elevating device is arranged between the two rack longitudinal beams and is positioned in the front of the rack longitudinal beam, the rotary screen is arranged between the two rack longitudinal beams, the tail end of the rack longitudinal beam is provided with the collecting device, and the second transmission system is connected with the elevating device and a power output shaft of the tractor.

The spiral mechanism comprises a straight-tooth speed reducer and a spiral, the straight-tooth speed reducer is connected with a first rack cross beam through threads, the straight-tooth speed reducer is provided with two output shafts, one end of each output shaft is connected with one key, the two spiral directions are opposite, the other end of each spiral is in interference fit with a corresponding bearing and a corresponding bearing seat respectively, and the bearing seat are arranged on corresponding side plates of the rack.

The transmission system comprises a first bevel gear reducer, a first chain wheel and a second chain wheel, the first bevel gear reducer is installed on a second frame cross beam, the second frame cross beam is arranged at the rear end between two frame side plates, the output end of the first bevel gear reducer is connected with the first chain wheel in a key mode, the first chain wheel is connected with the second chain wheel through a chain, the second chain wheel is connected with a straight-tooth speed reducer in a key mode, and the first bevel gear reducer is connected with a power output shaft of a tractor through a transmission shaft.

The front end of the side plate of the machine frame is connected with a depth wheel connecting rod through a lead screw respectively, the top end of the depth wheel connecting rod is connected with a first handle, and the bottom end of the depth wheel connecting rod is in threaded connection with a depth wheel.

The lifting device comprises two lifting side plates, a second reinforcing steel bar and a U-shaped supporting plate, the two lifting side plates are respectively in U-shaped clamping threaded connection with corresponding frame longitudinal beams, a plurality of groups of the second reinforcing steel bars penetrate between the two lifting side plates, the U-shaped supporting plate is welded on the second reinforcing steel bars, a conical discharge chute is welded at the tail end of the U-shaped supporting plate, and the conical discharge chute is aligned to a feed inlet of the rotary screen.

The rotary screen comprises a rotary screen frame, a rotary screen, a rotary shaft and a hydraulic motor, wherein the rotary screen frame is in threaded connection with the rotary screen or in riveted connection with the rotary screen, the rotary frame penetrates through the rotary shaft and is welded with the rotary shaft into a whole, the rotary shaft is connected with the hydraulic motor through a coupler, the rotary frame is internally provided with a first lifting plate, a second lifting plate and a third lifting plate, the first lifting plate, the second lifting plate and the third lifting plate are uniformly distributed on the circumference of the rotary screen, the discharge end of the rotary screen is welded with a lifting plate, and the lifting plate is uniformly distributed on the circumference of the rotary screen.

The discharge end of the rotary screen is provided with a secondary separation conveying screen, the discharge end of the secondary separation conveying screen is located above the collecting device, the secondary separation conveying screen comprises secondary separation screen side plates, a motor, a third chain wheel, a fourth chain wheel and a screen, the number of the secondary separation screen side plates is two, the secondary separation screen side plates are in threaded connection with the second frame, one secondary separation screen side plate is connected with the motor through a motor supporting plate, the motor is connected with the third chain wheel, the three sides of the chain wheel are connected with the fifth chain wheel and the fourth chain wheel through chains, the fifth chain wheel and the fourth chain wheel are connected with one end of the first driven shaft and one end of the first driving shaft respectively, the fifth chain wheel and the sixth chain wheel are arranged at the other ends of the first driven shaft and.

Drive system two include awl tooth reduction gear and a plurality of sprocket, awl tooth reduction gear and two threaded connection of frame, awl tooth reduction gear and seven key-type connections of sprocket, sprocket seven passes through the chain with intermediate drive shaft sprocket and is connected, intermediate drive shaft one end is located to the intermediate drive shaft sprocket, the intermediate drive shaft other end is connected with eight key-types of sprocket, sprocket eight is connected through the chain with sprocket nine, sprocket nine is connected with driving shaft two key-types, be equipped with a plurality of sprocket twelve on the driving shaft two, sprocket twelve is through heterotypic chain and sprocket eleven and sprocket ten interconnect, sprocket eleven and sprocket ten numbers are equal with sprocket twelve numbers, sprocket eleven and sprocket ten are connected with back shaft and driven shaft two key-type connection respectively, heterotypic chain on crisscross installation a plurality of L type.

The front end of the frame longitudinal beam is respectively provided with a frame screw rod, the frame screw rod is in threaded connection with a depth plate supporting rod, the top end of the depth plate supporting rod is connected with a third handle, and the bottom end of the depth plate supporting rod is connected with a depth plate.

The working process is as follows:

1) the front section is connected to a tractor with power of more than 30 horsepower through a first suspension mechanism, a screw mechanism is used for cleaning the furrow surface to loosen the soil, and then a soil scraping plate finishes the work of cleaning the covering soil on the surface layer of the furrow surface;

2) the soil loosening hooks can be arranged in multiple rows, and loose soil mixture is worked after soil covering on the surface layer of the ridge is cleaned;

3) the soil separating plates on the two sides in the front section separate the covering soil on the surface layer on the two sides, so that the furrow soil is cleaned to facilitate the rear section operation;

4) after the front section is finished, the shell soil is placed for half a day to one day, and the shell soil is fully aired until the shell soil is properly separated;

5) after the shell soil is fully aired, the rear section works and is connected to a tractor with power of more than 55 horsepower through a second suspension mechanism;

6) picking up and lifting the shellfish-soil mixture by a lifting device in the rear section;

7) the shell-soil mixture is lifted into the drum screen by the lifting device to be subjected to first mixture separation work, and a large amount of soil is separated;

8) after the first separation work is finished, conveying the shell-soil mixture into a secondary separation conveying sieve for secondary mixture separation work, and separating more soil and fritillaria planisporus under the rubbing of a brush;

9) after the secondary screening and separating work is finished, the fritillaria ussuriensis is conveyed to a collecting device by a secondary separating and conveying screen to be collected uniformly, and the shellfish-soil mixture falling from the screen surface is directly planted as seeds.

The utility model has the advantages that the surface soil is separated once, the fritillaria ussuriensis and the soil mixture are excavated, the fritillaria ussuriensis and the soil mixture are lifted and transported, the fritillaria ussuriensis and the soil mixture are separated once and twice, and the fritillaria ussuriensis harvester is developed on the basis of the combined harvester for fritillaria ussuriensis, and mainly comprises a front section and a rear end, the surface soil and the loose fritillaria ussuriensis and the soil mixture are separated at the front section, the purpose of separating the surface soil is to remove the rotten leaves of the dead branches on the surface of the surface soil and the bed, the loose fritillaria ussuriensis and the soil mixture separate the root system of fritillaria ussuriensis from the soil, and the soil is fully aired, so that the fritillar; the rear section completes the tasks of lifting and transporting the mixture of fritillaria ussuriensis and soil, separating the mixture of fritillaria ussuriensis and soil for the first and second times and collecting fritillaria ussuriensis. Compared with the combined fritillaria ussuriensis harvester which is declared authorized by the inventor before, the field management work of weeding and loosening the soil before and after seedling emergence of fritillaria ussuriensis is completed while various working technical indexes are obviously improved by adding a soil loosening mechanism and removing digging parts, so that the effect of isoqu isowork is achieved.

Description of the drawings:

FIG. 1 is a front elevation view of the present invention;

FIG. 2 is a top view of the front section of the present invention;

fig. 3 is a rear elevation view of the present invention;

fig. 4 is a rear plan view of the present invention;

fig. 5 is a flow chart of the present invention.

The specific implementation mode is as follows:

the device comprises a front section and a rear section, wherein the front section comprises a first suspension mechanism, a screw mechanism, a soil scraping plate 7, a soil loosening hook 9, a soil separating plate 8, a transmission system uniform and a rack one, the rack one is connected to a tractor through a first suspension mechanism, rack side plates 25 are respectively arranged on two sides of the rack one, a rack cross beam 24 is arranged between the front parts of two rack side plates 25, a screw mechanism is arranged on a rack cross beam 24, the middle of the rack side plate 25 is connected with the soil scraping plate 7 through a lead screw, the rear part of the rack side plate 25 is connected with two soil separating plates 8 through a lead screw, a first reinforcing bar 20 traverses between the two soil separating plates 8, a soil loosening hook 9 is welded or clamped on a first reinforcing bar 20, the transmission system is connected with a screw mechanism and a power output shaft of the tractor, the rear section comprises a lifting device, a drum screen, a second separation conveying screen, a second separation conveyor, a collection device, a second transmission system, a second screen mesh is connected to a screen mesh, two screen mesh and a screen mesh conveyor 36 are respectively arranged on two sides of the rack, two side plates, a lifting device, two side plates 35 and a screen mesh conveyor, a lifting frame, a lifting device is respectively arranged on two vertical mesh, a vertical mesh 6 is connected with a vertical mesh 6, a vertical mesh 6 is arranged on a vertical mesh 6, a vertical mesh 6 is arranged on a vertical mesh 6, a vertical mesh 6 is connected with a vertical mesh 6, a vertical mesh 6 is arranged on a vertical mesh 6, a vertical mesh 6 is arranged on a vertical mesh 6, a vertical mesh 6 is connected with a vertical mesh 6, a vertical mesh 6 is connected with a vertical mesh 6, a vertical mesh 6 is connected with a vertical mesh 6, a vertical mesh 6 is connected with a vertical mesh 6, a vertical mesh 6 is connected with a vertical mesh 6, a vertical mesh 6 is connected with a.

The first suspension mechanism comprises a first lower suspension seat, a front bearing beam, a first upper suspension rack 12 and a rear bearing beam 22, the front bearing beam 21 and the rear bearing beam 22 are transversely arranged at the front end and the rear end of a side plate 25 of the frame and are positioned at the two sides of a cross beam 24 of the frame, the number of the first lower suspension seats 13 is two and is respectively connected with the front bearing beam 21 through U-shaped clamping threads, the first upper suspension rack 12 is of a welding structure and is connected with the rear bearing beam 22 through the U-shaped clamping threads, and the two first lower suspension seats 13 and the first upper suspension rack 12 are in three-point suspension with the tractor and are connected through pin shafts; the second suspension mechanism comprises a second upper suspension frame 27, an upper bearing beam 29, an upper support seat 28, a second lower suspension frame 30 and a lower bearing beam 31, the upper bearing beam 29 and the lower bearing beam 31 are respectively positioned at the front ends of the second frames, the second upper suspension frame 27 is of a welding structure, the second upper support seat 28 is in threaded connection with the upper bearing beam 29 through U-shaped clamps, the number of the second lower suspension seat 30 is two, the second lower suspension seat 31 is in threaded connection with the lower bearing beam 31 through the U-shaped clamps, and the two second lower suspension seats 30 and the second upper suspension frame 27 are in three-point suspension with the tractor and are connected through pin shafts.

The working process is as follows:

1) the front section is connected to a tractor with power of more than 30 horsepower through a first suspension mechanism, a screw mechanism is used for cleaning the furrow surface to loosen the soil, and then a soil scraping plate 7 finishes the work of cleaning the covering soil on the surface layer of the furrow surface;

2) the soil loosening hooks 9 can be arranged in multiple rows, and loose soil mixture is worked after soil covering on the surface layer of the ridge is cleaned;

3) the soil separating plates 8 on the two sides in the front section divide the covering soil on the surface layer into two sides, and the furrow soil is cleaned to facilitate the rear section operation;

In the step 8), the brush 57 is added in the secondary separation conveying sieve, the secondary separation has a brush kneading effect, and referring to fig. 3, a quarter of an arc above the secondary separation conveying sieve is the brush 57.

The two-section fritillaria ussuriensis harvester works in two sections, wherein the front section works firstly to clean the surface covering soil on the ridge surface, loosen the betel soil mixture, clean the surface covering soil accumulated in the furrow, leave an operation channel, then place for half a day to 1 day, and after the soil is dried, the rear section starts to work to finish the lifting, primary and secondary separation and collection operations of the betel soil mixture, and the working flow refers to fig. 5.

Referring to fig. 1 and 2, the front section of the two-section fritillaria ussuriensis harvesting machine mainly comprises a screw mechanism, a soil scraping plate, a soil loosening hook, a soil separating plate, a transmission system and a frame, and finishes cleaning the surface covering soil of the ridge surface, loosening the mixture of the shellfish soil, cleaning the surface covering soil accumulated in the furrow, leaving an operation channel and facilitating the operation of a rear-section machine tool. Meanwhile, the front section also has the functions of weeding before and after emergence of fritillary bulb and loosening surface hard soil. The power matched with the tractor is more than 30 horsepower.

The two-section fritillaria ussuriensis harvester adopts two depth wheels 1 which are respectively in threaded connection with two depth wheel connecting rods 2, the depth wheel connecting rods 2 are respectively connected with two side plates 25 of a rack through screw rods on two sides, handles one 3 on two sides are rotated, and the positions of the two depth wheels 1 and the rack are adjusted simultaneously, so that the depth limitation of the whole machine is realized. The straight-tooth speed reducer 6 is in threaded connection with the first frame cross beam 24, two output shafts of the straight-tooth speed reducer 6 are in key connection with the screws 15 on two sides in different rotating directions respectively, the other end of each screw 15 is in interference fit with the two bearings and the first bearing seat 4 respectively, and the bearings and the first bearing seat 4 are in threaded connection with the two frame side plates 25 respectively. The scraper 7 is connected with two frame side plates 25 through screws, the position of the scraper 7 relative to the frame is adjusted, and the position of the scraper 7 relative to the screw 15 is changed. The soil separating plates 8 are two, one side of each soil separating plate is connected with the two side plates 25 of the rack through a screw rod, the other side of each soil separating plate is welded with the first reinforcing steel bar 20, the first reinforcing steel bar 20 is welded with the middle plate 19, the middle plate 19 is connected with the outer threaded rod 11 through a pin shaft, the two outer threaded rods 11 are in threaded connection with the inner threaded pipe 10, the other end of each outer threaded rod 11 is connected with the connecting seat 18 through a pin shaft, and the connecting seat 18 is in threaded connection with the rear bearing. The soil loosening hooks 9 are arranged in a front row and a rear row, welded or connected to the first reinforcing steel bar 20, distributed at equal intervals in each row and arranged in a staggered mode in the front and rear directions. Meanwhile, the relative position of the external threaded rod 11 and the internal threaded pipe 10 and the two handles 23 are adjusted, the position of the soil separating plate 8 and the position of the soil loosening hook 9 relative to the frame are changed, and the soil loosening and operation channel depth are adjusted. The first 17 of awl tooth reduction gear is installed on frame crossbeam two 26, a 17 output of awl tooth reduction gear is connected with a 16 key-type sprocket, a 16 chain of sprocket is connected with two 5 chains of sprocket, two 5 key-type sprockets are connected with straight-tooth reduction gear 6 keys, straight-tooth reduction gear 6 with respectively with the different spiral 15 key-type connections of turning to in both sides, tractor power output shaft passes through the transmission shaft and drives a 17 rotations of awl tooth reduction gear, a 17 of awl tooth reduction gear drives straight-tooth reduction gear 6 rotatoryly through chain drive, straight-tooth reduction gear 6 drives the different spiral 15 rotations of turning to in both sides rotatory, realize clearing up a border or a border. The two lower suspension seats 13 are connected with the front bearing beam 21 through U-shaped clamping threads, the upper suspension rack 12 is of a welded structure and is connected with the rear bearing beam 22 through U-shaped clamping threads, and the two lower suspension seats 13 and the upper suspension rack 12 are suspended at three points of the tractor and are connected with a pin shaft.

Referring to fig. 3 and 4, the rear section of the two-section fritillaria ussuriensis harvesting machine mainly comprises an elevating device, a drum screen, a secondary separation conveying screen, a collecting device, a transmission system II and a frame II, and completes the operations of elevating, primary and secondary separation and collection of a soil-shellfish mixture, and the power of the two-section fritillaria ussuriensis harvesting machine is a tractor with more than 55 horsepower.

The two-section fritillary bulb harvester adopts an upper suspension rack two 27 which is a welded structure, is connected with a bearing beam 29 on a rack through a U-shaped clamp screw thread, a lower suspension seat two 30 which is respectively connected with a bearing beam 31 under the rack through a U-shaped clamp screw thread, a depth limiting plate 34 is in screw thread connection with a depth limiting plate support rod 33 and is connected with a rack screw shaft 32, a handle three 63 is adjusted, the relative position of the rack and the depth limiting plate 34 is changed, the soil penetration depth of the whole machine is adjustable, two lifting side plates 35 which are respectively in screw thread connection with a rack longitudinal beam 36, three to four groups of steel bar two 37 are penetrated between the two side plates, a U-shaped support plate 38 is welded on the steel bar two 37, a conical discharge groove 39 is welded at the tail end of the U-shaped support plate 38, a roller frame 41 is in screw thread or rivet connection with a roller screen 42, a screen mesh 35, a screen mesh size 3 5639 mm, a roller frame 41 is welded with a roller rotating shaft 48 as a whole, two ends of the roller frame 41 is welded with the roller rotating shaft 48 as a rotating shaft 48, two ends of the bearing and a bearing seat 40 and three bearing seat 49 respectively in interference fit, the bearing seat 40, the bearing seat 49 and a bearing seat 40, the bearing seat 49 are respectively in interference fit with a lifting plate, the bearing seat 40, the bearing seat 49 bearing seat 40, the bearing seat 49 bearing seat 40 and a bearing seat 40, the bearing seat 40, the bearing seat is held by interference fit with a lifting plate, the bearing seat 40, the bearing seat, the lifting plate 60 is connected with a lifting plate, the lifting plate 35, the lifting plate 60, the lifting plate is connected with the lifting plate.

The two-section fritillaria ussuriensis harvester adopts two-section separation operation to solve the problems of short harvesting period and ineffective harvesting; the purpose of one machine with multiple purposes is achieved, and the multifunctional straw harvester can be used for harvesting fritillaria ussuriensis and other crops or medicinal materials; the problems of soil congestion and insufficient loosening during excavation are solved, the water content of the separated soil and fritillaria paniculata is effectively controlled, and the screening efficiency is improved; meanwhile, the secondary separation conveying sieve is added, so that the screening efficiency is improved.

In conclusion, the two-section fritillaria ussuriensis harvesting machine is developed on the basis of a combined harvesting machine which completes separation of surface soil at one time, excavates a fritillaria ussuriensis and soil mixture, lifts the fritillaria ussuriensis and the soil mixture, separates the fritillaria ussuriensis and the soil mixture at one time and collects the fritillaria ussuriensis, and mainly comprises a front section and a rear section, wherein the front section completes separation of the surface soil and loose fritillaria ussuriensis and soil mixture, and the surface soil is divided to remove dead branches and rotten leaves on the surface soil and the ridge surface and the loose fritillaria ussuriensis and soil mixture, so that the root system of fritillaria ussuriensis is separated from the soil, the soil is fully aired, and the separation of the two is convenient; the rear section completes the tasks of lifting and transporting the mixture of fritillaria ussuriensis and soil, separating the mixture of fritillaria ussuriensis and soil for the first and second times and collecting fritillaria ussuriensis. Compared with the combined fritillaria ussuriensis harvester which is declared authorized by the inventor before, the field management work of weeding and loosening the soil before and after seedling emergence of fritillaria ussuriensis is completed while various working technical indexes are obviously improved by adding a soil loosening mechanism and removing digging parts, so that the effect of isoqu isowork is achieved.

Claims

1. A two-section fritillaria ussuriensis harvester is characterized in that: comprises a front section and a rear section,

the front section comprises a first hanging mechanism, a screw mechanism, a soil scraping plate (7), a soil loosening hook (9), a soil separating plate (8), a transmission system and a first frame, wherein the first frame is connected to a tractor through the first hanging mechanism, two sides of the first frame are respectively provided with a first frame side plate (25), a first frame cross beam (24) is arranged between the front parts of the two frame side plates (25) in a cross mode, the screw mechanism is arranged on the first frame cross beam (24), the middle of the first frame side plate (25) is connected with the soil scraping plate (7) through a screw rod, the rear part of the first frame side plate (25) is connected with the two soil separating plates (8) through the screw rod, a first reinforcing steel bar (20) transversely penetrates between the two soil separating plates (8), the first reinforcing steel bar (20) is provided with the soil loosening hook (9), and the transmission;

the rear section comprises an elevating device, a rotary screen, a collecting device, a transmission system II and a rack II, the rack II is connected to a tractor through a suspension mechanism II, rack longitudinal beams (36) are arranged on two sides of the rack II respectively, the elevating device is arranged between the two rack longitudinal beams (36), the elevating device is located in the front of the rack longitudinal beams (36), the rotary screen is arranged between the two rack longitudinal beams (36), the collecting device is arranged at the tail end of the rack longitudinal beam (36), and the transmission system II is connected with the elevating device and a power output shaft of the tractor.

2. The two-stage fritillary bulb harvester according to claim 1, wherein: the spiral mechanism include straight-tooth reduction gear (6) and spiral (15), straight-tooth reduction gear (6) are connected with frame crossbeam (24) through the screw thread, straight-tooth reduction gear (6) are equipped with two output shafts, two output shafts are the one end key-type connection of spiral (15) respectively, two spiral (15) are revolved to opposite, spiral (15) other end respectively with corresponding bearing and bearing frame (4) interference fit, bearing and bearing frame (4) are located on corresponding frame curb plate (25).

3. The two-stage fritillary bulb harvester according to claim 1, wherein: the transmission system include bevel gear reduction unit (17), sprocket (16) and sprocket two (5) in unison, install on frame crossbeam two (26) bevel gear reduction unit (17), frame crossbeam two (26) crossbearer is in the rear end between two frame curb plates (25), the output and sprocket (16) key-type connection of bevel gear reduction unit (17), sprocket (16) is connected with sprocket two (5) through the chain, sprocket two (5) and straight-tooth reduction unit (6) key-type connection, power output shaft through the transmission shaft of bevel gear reduction unit (17) and tractor.

4. The two-stage fritillary bulb harvester according to claim 1, wherein: the front end of the frame side plate (25) is connected with the depth wheel connecting rod (2) through a lead screw respectively, the top end of the depth wheel connecting rod (2) is connected with the first handle (3), and the bottom end of the depth wheel connecting rod (2) is in threaded connection with the depth wheel (1).

5. The two-stage fritillary bulb harvester according to claim 1, wherein: the lifting device comprises two lifting side plates (35), two steel bars (37) and a U-shaped supporting plate (38), the number of the two lifting side plates (35) is two, the two lifting side plates are respectively connected with corresponding frame longitudinal beams (36) through U-shaped clamping threads, a plurality of groups of the two steel bars (37) penetrate between the two lifting side plates (35), the U-shaped supporting plate (38) is welded on the two steel bars (37), a conical discharge chute (39) is welded at the tail end of the U-shaped supporting plate (38), and the conical discharge chute (39) is aligned to a feed port of the drum screen.

6. The two-stage fritillary bulb harvester according to claim 1, wherein: the rotary screen comprises a rotary screen frame (41), a rotary screen (42), a rotary shaft (48) and a hydraulic motor (52), wherein the rotary screen frame (41) is in threaded or riveted connection with the rotary screen (42), the rotary screen frame (41) penetrates through the rotary shaft (48) and is welded with the rotary shaft (48) into a whole, the rotary shaft (48) is connected with the hydraulic motor (52) through a coupler (51), a first material raising plate (43), a second material raising plate (44) and a third material raising plate (46) are arranged in the rotary screen frame (41), the first material raising plate (43), the second material raising plate (44) and the third material raising plate (46) are distributed on the circumference of the rotary screen, a lifting plate (47) is welded at the discharge end of the rotary screen frame (41), and the lifting plates (47) are distributed on the circumference of the rotary screen uniformly.

7. The two-stage fritillary bulb harvester according to claim 1, wherein: the discharge end of the drum screen is provided with a secondary separation conveying screen, the discharge end of the secondary separation conveying screen is positioned above the collecting device, the secondary separation conveying screen comprises two secondary separation screen side plates (56), a motor (89), a chain wheel III (90), a chain wheel IV (88) and a screen (84), the number of the secondary separation screen side plates (56) is two, the secondary separation screen side plates are connected with the rack II through threads, one secondary separation screen side plate (56) is connected with the motor (89) through a motor supporting plate (58), the motor (89) is connected with the chain wheel III (90) in a key mode, two sides of the chain wheel III (90) are connected with the chain wheel V (82) and the chain wheel IV (88) through chains (85), the chain wheel V (82) and the chain wheel IV (88) are connected and respectively arranged at one end of a driven shaft I (81) and a driving shaft I (86), the other end of the driven shaft I (81) and the driving shaft, the chain wheel five (82) is connected with the chain wheel six (87) through a chain (85), and a screen (84) is arranged between the two chains (85).

8. The two-section fritillaria ussuriensis harvesting machine of claim 1 is characterized in that the second transmission system comprises a bevel gear reducer (64) and a plurality of chain wheels, the bevel gear reducer (64) is in threaded connection with the second frame, the bevel gear reducer (64) is in key connection with a seventh chain wheel (65), the seventh chain wheel (65) is in chain connection with a seventh intermediate transmission shaft chain wheel (66), the seventh intermediate transmission shaft chain wheel (66) is arranged at one end of an intermediate transmission shaft (68), the other end of the intermediate transmission shaft (68) is in key connection with an eighth chain wheel (60), the eighth chain wheel (60) is in chain connection with a ninth chain wheel (59), the ninth chain wheel (59) is in key connection with a second driving shaft (78), the second driving shaft (78) is provided with a plurality of twelve chain wheels (77), the twelve chain wheels (77) are connected with an eleventh chain wheel (75) and ten chain wheels (70) through a special-shaped chain (71), the eleventh chain wheels (75) and the tenth chain wheels (70) are equal in number to the twelfth chain wheels (77), the eleventh chain wheels (75) and the tenth wheels (70) are respectively connected with a support shaft (74) and a plurality of special-shaped.

9. The two-stage fritillary bulb harvester according to claim 1, wherein: the front end of the frame longitudinal beam (36) is respectively provided with a frame screw rod (32), the frame screw rod (32) is in threaded connection with a depth plate supporting rod (33), the top end of the depth plate supporting rod (33) is connected with a third handle (63), and the bottom end of the depth plate supporting rod (33) is connected with a depth plate (34).