CN101156519A - Adjustable potatoes harvester - Google Patents

Abstract

The invention provides an adjustable potato lifter. A plowshare (17) is arranged on a plow frame (16), plow arms (18) are connected on the two sides of the machine body (22) fixedly, a depth limiting wheel shaft bracket (20) is provided with a depth limiting wheel (19) raising machine body (22). The distance between a depth limiting wheel (19) and a depth limiting wheel roof beam (11) can be adjusted by a depth limiting wheel adjusting rod (26) to determine the in-earth depth of the plowshare (17). A power output wheel (2) transmits the power to an eccentric shaft belt wheel (8) through a transmission belt (3) and an intermediate belt wheel (6). The shaft end of an eccentricity shaft (9) and a connecting shaft (12) are connected through a sieve oscillating connecting rod (10), and a sieve oscillating arm (13) together with a sieve (15) oscillates forth and back around a sieve oscillating middle shaft (14). In the invention, the plowshare (17) and the sieve (15) are arranged separately, so that the vibration is lightened; the plowshare (17) can be changed separately, the maintenance is convenient, the cost is low; the installation angle of the plow frame (16) can be adjusted, the adaptability is strong; the quality of the harvest is excellent, and the efficiency is high.

Description

Adjustable potatoes harvester

Technical field

The present invention relates to agricultural machinery, relate in particular to crops root harvester tool.

Background technology

Potato be a kind of nutritious, high yield is easily planted, inexpensive agricultural product, domestic market demand at present increases year by year, the potato planting area constantly enlarges, output improves constantly, and is subjected to the people and generally likes.The results of potato are important production links, traditional behindhand type results such as hand digging, animal-drawn plough work are continued to use in vast for many years rural area always, not only labour intensity is big, efficient is low, and the breakage rate height, influencing quality, price does not increase yet, particularly at high and cold area, because results are not thorough, untimely, cause quite a few potato to rot underground, cause damage.Along with development in science and technology and economic strength promote, concentrate the place of production to bring into use machinery to excavate results on part farm and potato.Though existing potato digger tool and combined harvester can reach the purpose of mechanized harvest potato, but volume is big, fuselage is heavy, the use cost height, colter and sieve are connected as a single entity more, colter is fixed with the support position that colter is installed, the colter angle of penetration can not be adjusted, the following problem of this structure ubiquity: the one, the plough shovel is an overall structure with sieve, plough shovel and sieve shake pendular oscillation simultaneously during operation, the vibration of drive tractor often is among the vibration of back and forth waving the driver, and body is also caused structural fatigue damage easily; The 2nd, plough shovel setting angle is fixed, and is difficult to adapt to operation in different soil plot, and same angle of penetration is ploughed not deeply on the ground at weak soil, then draw motionlessly at the hard place piece, and versatility is relatively poor; The 3rd is to plough to shovel mostly to be overall structure, and colter normal wear or accidental damage all will be changed plough shovel assembly, not only bother, and waste, and use cost height, financial burden weigh.

Summary of the invention

Purpose of the present invention just provides a kind of potato harvest machinery of new construction, improves structure, can adjust the colter angle of penetration, improves the adaptability to different plot, alleviates vibration effect, improves operating mode, reduces cost, and improves work efficiency.

Task of the present invention is finished like this: design a kind of adjustable potatoes harvester, be made up of stand arrangement, transmission system, harvesting apparatus, use with tractor.Stand arrangement comprises body and gauge wheel assembly, transmission system comprises transmission mechanism and operating mechanism, harvesting apparatus comprises colter mechanism and sieve swinging mechanism, transmission mechanism, the gauge wheel assembly, colter mechanism, the sieve swinging mechanism is installed on the body respectively, colter mechanism is by colter, plow frame, the plough arm combines, colter is by bolt and plow frame connection, plow frame is with adjusting bolt and the plough arm connection that is fixed on the body, the fixing installing of body front end hitch frame, can be connected with the tractor rear linkage, the sieve swinging mechanism cooperates control by the power set that transmission mechanism connects tractor.Body adopts the rectangular chassis that has side bar, crossbearer and base plate, constitute box-frame formula fixed structure with the standing baffle of two sides, rear end face, can install the idler axle bed above the front portion of side standing baffle, middle top surface is fixed with excentric sleeve, can cooperate with transmission mechanism, downside is equipped with connecting plate, the rear portion is equipped with the bottom bracket axle that is connected and fixed plate, be equiped with the body suspension plate of band mesopore on the anterior crossbearer, match with suspension lifter behind the tractor, be equipped with the bracing frame axle bed on the central floor panel, plough arm and sieve swinging mechanism can be installed in standing baffle rear portion, two sides.Gauge wheel mechanism is by gauge wheel, the gauge wheel pedestal, the gauge wheel back timber, the gauge wheel adjusting lever is formed, gauge wheel is wide metal web wheel of band central axle sleeve and spoke, the supporting dress gauge wheel of central shaft hole pedestal, the gauge wheel pedestal is the triangle-frame that the band minor axis is made in the square steel welding, the connecting plate that the triangle-frame end is upturned with body is connected and fixed, minor axis and gauge wheel central axle sleeve are equipped, the gauge wheel adjusting lever is two sections straight-bars of two ends belt lacing, the middle screw rod head connects vertically setting by the threaded sleeve suit, the top joint is connected with gauge wheel back timber hanger, the bottom joint is connected with gauge wheel pedestal hanger, the gauge wheel back timber is the crossbeam of middle band back timber bracing frame, two ends are provided with the hanger of band pin-and-hole, be connected with pin with gauge wheel adjusting lever top joint, have axle sleeve in the middle of the back timber bracing frame lower end, be equipped with frame in the middle of the bracing frame axle bed on the body with back shaft.The sieve swinging mechanism is by sieve, the sieve swing arm, sieve pendulum connecting rod, connecting axle in the sieve swing arm, sieve pendulum axis is formed, sieve pendulum connecting rod connects transmission mechanism and sieves connecting axle in the swing arm, the connecting axle two ends are set with the upper end of sieve swing arm in the sieve swing arm, the sieve swing arm is two long slab arms, vertically be installed in the left and right sides of body, intermediate shaft hole is sleeved on the two ends spindle nose of sieve pendulum axis, sieve pendulum bottom bracket axle is contained in the bottom bracket axle on the body, fixedly connected with the sieve vertical plates on both sides respectively in sieve swing arm lower end, the front end of sieve is a transverse slat, and both sides are vertical riser, is connected in the sieve swing arm with bolt, fix on the transverse slat that some gratings are flat backward to be stretched, the gravity flow screen bar forms framework on the riser.Transmission mechanism is made up of power output wheel, driving-belt, gap bridge belt wheel, gap bridge wheel shaft, eccentric shaft belt wheel, eccentric shaft, power output wheel is installed on the tractor engine output shaft, the equipped protective cover in outside, be connected with gap bridge belt wheel on being sleeved on the gap bridge axle stub with driving-belt, the idler pedestal is located in the idler axle bed above the front part of a body, the gap bridge belt wheel is connected with the eccentric shaft belt wheel by driving-belt, eccentric shaft is installed in the excentric sleeve on the body, the two ends end face connects the sieve pendulum connecting rod of both sides respectively, and the sieve pendulum connecting rod other end connects connecting axle in the sieve swing arm.Operating mechanism is made up of joystick, preceding pinch roller, back pinch roller, adjustment plate, extension spring, pinch roller support and support shaft, the pinch roller support of back pinch roller is hung over by tension spring hook on the edge-on baffle plate of body and strains, the back pinch roller is compressed with driving-belt to be cooperated, joystick is connected with the pinch roller support of preceding pinch roller, preceding pinch roller can be compressed with driving-belt to cooperate.The colter of colter mechanism is the metal plough sheet that middle point protrudes forward, the rear end is installed with dark screw with plow frame and is connected, front, the bottom shape of plow frame is identical with colter, the rear portion has some flat backward transiting rods of stretching, leave the gap between the transiting rod, the soil guiding board that the fixing installing in plow frame both sides stands vertically has screw on the soil guiding board, available adjustment bolt and the connection of plough arm.The plough arm is two metal system long slabs, be vertically fixed on the body left and right sides, the top is laterally connected by plough arm upper junction plate, medium position has the rectangular adjustment screw of circular arc under the plate face, fixedly connected with plow frame with adjusting bolt, can change as required and adjust bolt and the equipped position of adjusting screw, determine plow frame and plough arm setting angle, form suitable angle.Determine distance between gauge wheel and the colter by the length of adjusting the gauge wheel adjusting lever, just can control the degree of depth in colter insertion soil,, adapt to the requirement in different plot so that adjust according to the different soils situation.When using with tractor, the hitch frame of body front end is connected and fixed with bolt and tractor rearward end, the lift arm of tractor rear linkage is cooperated with body suspension plate hook, and the wheel that outputs power is sleeved on the engine output shaft of tractor, and installs protective cover additional; Driving-belt is installed in power output wheel and gap bridge belt wheel, and on gap bridge belt wheel and the eccentric shaft belt wheel, preceding pinch roller and pinch roller support, back pinch roller and pinch roller support is installed, and be equipped with joystick, extension spring respectively.Hang lift arm with upwards lifting transfer walking of the present invention after handling tractor.When the operation of land for growing field crops, hang behind the tractor and fall, the gauge wheel of both sides of the present invention is pressed on the ground, and by the tractor-drawn walking, colter inserts Tanaka, potato is connected one in soil scoop up to sieve.Power is by tractor engine output shaft suit power output wheel, reach the eccentric shaft belt wheel by driving-belt, gap bridge belt wheel, the drive eccentric shaft rotates, and puts connecting rod by sieve again and drives the sieve swing arm around sieve pendulum axis reciprocally swinging, rocks before and after the drive sieve, earth is fallen in the ground by sieve, potato is stayed on the grating of sieve, along with tractor constantly advance and waving of sieve rock, potato tumbles the sieve back automatically and is spread out on the ground, directly pick up and get final product, very convenient.

Design and produce, test according to above-mentioned, prove compact conformation of the present invention, reasonable, matching performance is good, and is owing to the colter angle of penetration can be adjusted, strong to the plot adaptability of different soil properties; Because colter mechanism is provided with the split of sieve swinging mechanism, has reduced complete machine oscillation, has improved operating mode, has prolonged service life; Because colter can change separately, use easy to maintenancely, reduced cost.With tractor results potato I, efficient height, quality are good, have saved manpower and materials, have reached predetermined purpose preferably.

Description of drawings

Fig. 1 is a complete machine front view of the present invention;

Fig. 2 is that the A of Fig. 1 is to front view;

Fig. 3 is that the B of Fig. 1 is to vertical view;

Fig. 4 is gauge wheel mechanism structure figure of the present invention;

Fig. 5 is that colter of the present invention mechanism cooperates schematic diagram with the sieve swinging mechanism;

Fig. 6 is body of the present invention (a 22) structure chart.

Among the figure, 1-protective cover, 2-power output wheel, pinch roller before the 3-driving-belt, 4-, the 5-joystick, 6-gap bridge belt wheel, pinch roller behind the 7-, 8-eccentric shaft belt wheel, the 9-eccentric shaft, 10-gauge wheel back timber, 11-sieve pendulum connecting rod, connecting axle in the swing arm of 12-sieve, 13-sieves swing arm, 14-sieve pendulum axis, the 15-sieve, 16-plow frame, 17-colter, 18-ploughs arm, 19-gauge wheel, 20-gauge wheel pedestal, the 21-extension spring, 22-body, 23-gap bridge wheel shaft, the 24-hitch frame, 25-adjusts plate, 26-gauge wheel adjusting lever, the 27-excentric sleeve, 28-body suspension plate; A-line of vision symbol, B-line of vision symbol, C-adjusts screw, E-grating, the F-joint, G-threaded sleeve, H-bracing frame axle bed, I-back shaft, J-pinch roller support, the L-connecting plate, M-adjusts bolt, N-standing baffle, P-idler axle bed, R-hanger, T-riser, the U-soil guiding board, V-back timber bracing frame, W-transiting rod, the X-bottom bracket axle, Y-plough arm upper junction plate, Z-minor axis.

Embodiment

The invention will be further described below in conjunction with accompanying drawing.

Consult Fig. 1, the body 22 of band hitch frame 24 is connected and fixed with the gauge wheel pedestal 20 that is installed on the gauge wheel 19 by connecting plate L, and the hanger R of gauge wheel back timber 10 is connected with the hanger R of gauge wheel pedestal 20 by gauge wheel adjusting lever 26, constitutes stand arrangement; Power output wheel 2 outsides have protective cover 1, gap bridge belt wheel 6 is sleeved on gap bridge wheel shaft 23 axle heads, eccentric shaft belt wheel 8 is sleeved on eccentric shaft 9 axle heads, gap bridge wheel shaft 23 is erected among the idler axle bed P above the upright plate washer N of body 22 front part sides, eccentric shaft 9 is installed in the excentric sleeve 27, crossbearer is coupled together respectively with eccentric shaft belt wheel 8 with gap bridge belt wheel 6, gap bridge belt wheel 6 by driving-belt 3 wheel 2 that outputs power on the top of the upright plate washer N in body 22 two sides; The pinch roller support J of pinch roller 4 before joystick 5 connects, can be with preceding pinch roller 4 and driving-belt 3 compression fit transferring power, the pinch roller support J of back pinch roller 7 on body 22, compresses maintenance mated condition with driving-belt 3 by extension spring 21 tensions, drives 8 rotations of eccentric shaft belt wheel.Colter 17 usefulness bolts are connected on the plow frame 16, plow frame 16 usefulness are adjusted bolt M and are fixed on the plough arm 18, plough arm 18 upper ends are fixed on the body 22 both sides standing baffles, the swing arm 13 of two sieves vertically is installed in body 22 both sides, connection is traversed by connecting axle 12 in the sieve swing arm in the upper end, to sieve by sieve pendulum connecting rod 11 that connecting axle 12 and eccentric shaft 9 end faces couple together in the swing arm, sieve pendulum axis 14 two ends of the bottom bracket axle X of sieve swing arm 13 intermediate shaft hole suit bodies 22, the fixedly connected sieve 15 in bottom can be put axis 14 front and back runouts by sieving 11 drive sieve swing arms 13 of pendulum connecting rod and sieve 15 around sieve by eccentric shaft 9.

Consult Fig. 2, combine contrast with Fig. 1 and show each modular construction, have back timber bracing frame V below the gauge wheel back timber 10, hanger R below two ends is connected with gauge wheel adjusting lever 26 usefulness pins, gauge wheel adjusting lever 26 is two sections threaded straight-bars, connect the middle screw rod head by threaded sleeve G suit, top joint F connects the hanger R of gauge wheel back timber 10, and bottom joint F connects gauge wheel pedestal 20 hanger R; Gauge wheel pedestal 20 is the triangular framing of band minor axis Z, and the end is upturned, fixedly connected with the connecting plate L of 22 liang of edge-on plate washer N of body bottom, and minor axis Z suit gauge wheel 19, fastening with nut; Sieve swing arm 13 suits sieve pendulum axis 14 two axial ends are installed in rear portion, body 22 both sides, fixedly connected with sieve pendulum connecting rod 11 by connecting axle 12 in the sieve swing arm in the upper end, lower end and sieve 15 are connected and fixed, in sieve 15 vertical plates on both sides T are included in colter 17, plow frame 16, leave the gap on every side, sieve 15 can be enclosed within front and back, the outer ring runout of plow frame 16.

Consult Fig. 3,22 of bodies are contained on the gauge wheel pedestal 20, the power output wheel 2 of front end is contained in the gap bridge belt wheel 6 of gap bridge wheel shaft 23 axle heads by driving-belt 3 adapter sleeves, gap bridge belt wheel 6 is contained in the eccentric shaft belt wheel 8 of eccentric shaft 9 axle heads by driving-belt 3 adapter sleeves, in the eccentric shaft 9 horizontal excentric sleeves 27 that are contained on the body 22, spindle nose stretches out the end that body 22 outsides connect sieve pendulum connecting rod 11, sieve pendulum connecting rod 11 other ends connect connecting axle 12 in the sieve swing arm, sieve 15 is installed in sieve swing arm 13 bottoms, and grating E stretches out to the back-end.Gauge wheel back timber 10 traverses body 22 tops, and axle sleeve is connected with back shaft I suit in the middle of its back timber bracing frame V bottom, vertically is erected on the body 22 intermediate supports axle bed H.Body suspension plate 28 is located on the body 22 anterior crossbeams, can be connected cooperation with suspension lifter behind the tractor, and hitch frame 24 is fixed on body 22 front ends, and available bolt and tractor rear end are connected and fixed.

Consult Fig. 4, the gauge wheel back timber 10 of band hanger R, gauge wheel adjusting lever 26, the gauge wheel pedestal 20 of band hanger R, gauge wheel 19 constitute gauge wheel mechanism, gauge wheel back timber 10 and back timber bracing frame V are welded by square steel, two ends hanger R is connected by the joint F of pin with gauge wheel adjusting lever 26 tops, middle part threaded sleeve (G) can be adjusted the length of gauge wheel adjusting lever 26, determines that with the distance between gauge wheel 19 and the gauge wheel back timber 10 colter 17 inserts the degree of depth of soil.The minor axis Z of gauge wheel pedestal 20 is housed in gauge wheel 19 intermediate shaft holes, and the triangular framing end of gauge wheel pedestal 20 is upturned, and can connect and support body 22.

Consult Fig. 5, colter 17 is fixed by bolts on the plow frame 16, the adjustment screw C of plough arm 18 is the circular arc strip hole, can select arbitrarily and the cooperation position of adjusting bolt M, front, plow frame 16 bottom is identical with colter 17 shapes, the back is the transiting rod W that is connected on the transverse slat, and both sides have upright soil guiding board U.Two vertically disposed plough arm 18 upper ends fixedly fuse with horizontal plough arm upper junction plate Y, but frame is contained on the body 22.Sieve 15 front end transverse slat both sides are vertical riser T, with bolt sieve 15 is installed in sieve swing arm 13 lower ends, the outside is fixed with some grating E that are arranged above and below and forms frame, the transverse slat rear end is connected and fixed that some grating E are flat backward to be stretched, the transverse slat of sieve 15 is stretched below plow frame 16, vertical plates on both sides T can loose containing plow frame 16, at sieve 15 unlikely collision plow frame 16 during with sieve swing arm 13 front and back runouts.Colter 17 is fixed by bolts on the plow frame 16, and plow frame 16 selected suitable angles are with adjusting bolt M location fastening (generally selecting 10 °～20 °) in the adjustment screw C of plough arm 18.

Consult Fig. 6, upright plate washer N of two sides and rear end face and rectangular chassis constitute body 22, be equiped with the outstanding plate washer 28 of body on the anterior crossbearer of underframe, the upright plate washer N top fixed installation in two sides excentric sleeve 27, the underframe central floor panel is provided with bracing frame axle bed H, and bottom bracket axle X is traversed at upright plate washer N rear portion, side, and has fixedly wing plate, connecting plate L is fixed on the upright plate washer N middle lower portion in two sides, is used to connect gauge wheel pedestal 20.

After the present invention assembles complete machine, cooperate with tractor, front end hitch frame 24 is fixedlyed connected with the tractor rear end, and power output wheel 2 is sleeved on the tractor engine output shaft.Body suspension plate 28 cooperates with suspension hoisting device behind the tractor, can be mentioned that the present invention is unsettled to move ahead by tractor.During work, the tractor lifting device descends, and puts down the present invention, and gauge wheel 19 drops on the ground, and colter 17 inserts below ground, drives the present invention by tractor and moves ahead in the potato planting district, and the engine output shaft rotation drives power output wheel 2 and rotates.Joystick 5 is pushed away forward, pinch roller 4 was pressed on the driving-belt 3 before pinch roller support J was driven, tighten driving-belt 3 with transmission of power to gap bridge belt wheel 6, driving gap bridge belt wheel 6 rotates, drive eccentric shaft belt wheel 8 by driving-belt 3, back pinch roller 7 is held by extension spring 16 and is compressed 8 rotations of driving-belt 3 drive eccentric shaft belt wheels.Eccentric shaft 9 is connected and fixed with sieve pendulum connecting rod 11 front ends, the rear end of sieve pendulum connecting rod 11 is connected with connecting axle 12 suits in the sieve swing arm, eccentric shaft 9 rotations make sieve pendulum connecting rod 11 around the rotation of the axle center of eccentric shaft 9, driving and sieving arm 13 is the reciprocal rocking vibration of central pivot point with sieve pendulum axis 14, and the sieve 15 that sieve swing arm 13 lower ends connect is the front and back runout thereupon.This moment, the colter 17 of colter mechanism inserted underground, potato and soil are scooped up together, under the restriction of plow frame 16 both sides soil guiding board U, flow to transiting rod W, drop then on the sieve 15 of transiting rod W back, under soil sieve, potato is stayed on the grating E, along with sieve 15 vibrates on the soil that drops in the wings, on the ground of the plough pine that tractor and the present invention pass by, be the potato of a slice results, per hour can gather in the crops 4 mu of potatos.Because sieve 15 separates setting with colter 17.Alleviate oscillation intensity widely, improved the operation operating mode; Setting angle between plow frame 16 and the plough arm 18 can be adjusted, and makes colter 17 determine and the angle on ground that applicability is extensive, long service life according to different soil situations.And because colter 17 is split assemblings with plow frame 16, when colter 17 wearing and tearing need to change.Only change colter 17 and get final product, plow frame 16 also can continue to use, and is time saving and energy saving, reduced cost.Compare with existing potato harvester, compact conformation of the present invention, volume is little, and is in light weight, uses easy to maintenancely, improved results quality and work efficiency effectively.

Claims (7)

1. adjustable potatoes harvester, by stand arrangement, transmission system, harvesting apparatus is formed, it is characterized in that stand arrangement comprises body (22) and gauge wheel assembly, transmission system comprises transmission mechanism and operating mechanism, harvesting apparatus comprises colter mechanism and sieve swinging mechanism, transmission mechanism, the gauge wheel assembly, colter mechanism, the sieve swinging mechanism is installed in respectively on the body (22), colter mechanism is by colter (17), plow frame (16), plough arm (18) combines, colter (17) and plow frame (16) connection, plow frame (16) and plough arm (18) connection that is fixed on the body (22), the fixing installing of body (22) front end hitch frame (24), can be connected with the tractor rear linkage, the sieve swinging mechanism cooperates control by the power set that transmission mechanism connects tractor.

2. according to the described adjustable potatoes harvester of claim 1, it is characterized in that said body (22) employing has side bar, the rectangular chassis of crossbearer and base plate, with two sides, the standing baffle of rear end face (N) constitutes box-frame formula fixed structure, can install idler axle bed (P) above the front portion of side standing baffle (N), middle top surface is fixed with excentric sleeve (28), downside is equipped with connecting plate (L), the rear portion is equipped with bottom bracket axle (X), the body suspension plate (27) of band mesopore is housed above the anterior crossbearer, be equipped with bracing frame axle bed (H) on the central floor panel, plate washer (N) rear portion is stood in two sides can install plough arm (18) and sieve swinging mechanism.

3. according to the described adjustable potatoes harvester of claim 1, it is characterized in that said gauge wheel assembly is by gauge wheel (19), gauge wheel pedestal (20), gauge wheel back timber (11), gauge wheel adjusting lever (26) is formed, gauge wheel (19) is wide metal web wheel of band central axle sleeve and spoke, gauge wheel pedestal (20) is the triangle-frame of band minor axis (Z), the triangle-frame end is upturned and the connecting plate (L) of body (22) is connected and fixed, minor axis (Z) is equipped with gauge wheel (19) central axle sleeve, gauge wheel adjusting lever (26) is two sections straight-bars of two ends belt lacing (F), the middle screw rod head connects vertically setting by threaded sleeve (G) suit, top joint (F) is connected with gauge wheel back timber (11) hanger (R), bottom joint (F) is connected with gauge wheel pedestal (20) hanger (R), gauge wheel back timber (11) is the crossbeam of middle band back timber bracing frame (V), two ends are provided with the hanger (R) of band pin-and-hole, be connected with pin with gauge wheel adjusting lever (26) top joint (F), have axle sleeve in the middle of back timber bracing frame (V) lower end, in the middle of the bracing frame axle bed (H) of the equipped frame of back shaft (I) on body (22).

4. according to the described adjustable potatoes harvester of claim 1, it is characterized in that said sieve swinging mechanism is by sieve (15), sieve swing arm (13), sieve pendulum connecting rod (10), connecting axle (12) in the sieve swing arm, sieve pendulum axis (14) is formed, sieve pendulum connecting rod (10) connects transmission mechanism and sieves connecting axle (12) in the swing arm, connecting axle (12) two ends are set with the upper end of sieve swing arm (13) in the sieve swing arm, sieve swing arm (13) is two long slab arms, vertically be installed in the left and right sides of body (22), intermediate shaft hole is sleeved on the spindle nose of sieve pendulum axis (14) two ends, sieve pendulum axis (14) is contained in the bottom bracket axle (X) of body (22), fixedly connected with sieve (15) in sieve swing arm (13) lower end, the front end of sieve (15) is a transverse slat, both sides are vertical riser (T), be connected in the sieve swing arm (13) with bolt, fix on the transverse slat that some gratings (E) are flat backward to be stretched, riser (T) is gone up fixedly grating (E) formation framework.

5. according to the described adjustable potatoes harvester of claim 1, it is characterized in that said transmission mechanism is by power output wheel (2), driving-belt (3), gap bridge belt wheel (6), gap bridge wheel shaft (23), eccentric shaft belt wheel (8), eccentric shaft (9) is formed, power output wheel (2) is installed on the tractor engine output shaft, equipped protective cover (1), be connected with the gap bridge belt wheel (6) of driving-belt (3) with suit gap bridge wheel shaft (23) axle head, gap bridge wheel shaft (23) is erected in the anterior top idler axle bed (P) of body (22), gap bridge belt wheel (6) is connected with eccentric shaft belt wheel (8) by driving-belt (3), eccentric shaft (9) is installed in the excentric sleeve (28) on the body (22), and the two ends end face connects sieve pendulum connecting rod (10).

6. according to the described adjustable potatoes harvester of claim 1, it is characterized in that said operating mechanism is by joystick (5), preceding pinch roller (4), back pinch roller (7), adjust plate (25), extension spring (21), pinch roller support (J) and support shaft are formed, the pinch roller support (J) of back pinch roller (7) is hooked on body (22) one edge-on baffle plates (N) by extension spring (21) and goes up tension, back pinch roller (7) is compressed with driving-belt (3) to be cooperated, joystick (5) is connected with the pinch roller support (J) of preceding pinch roller (4), preceding pinch roller (4) can be compressed with driving-belt (3) to cooperate.

7. according to the described adjustable potatoes harvester of claim 1, it is characterized in that the metal plough sheet that the colter (17) of said colter mechanism protrudes forward for middle point, the rear end is installed with dark screw with plow frame (16) and is connected, front, the bottom shape of plow frame (16) is identical with colter (17), the rear portion has some flat backward transiting rods of stretching (W), the soil guiding board (U) that the fixing installing in both sides stands vertically, soil guiding board (U) is gone up perforate, available adjustment bolt (M) and the connection of plough arm (18), plough arm (18) is two metal system long slabs, be vertically fixed on body (22) left and right sides, the top is laterally connected by plough arm upper junction plate (Y), and medium position has the rectangular adjustment screw of circular arc (C) under the plate face.

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