阅读说明：本技术 一种用于菊芋联合收获机的根芋分离装置 (A root taro separator for jerusalem artichoke combine ) 是由 梁子安 周俊 袁立存 于 2020-05-15 设计创作，主要内容包括：本发明提出一种用于菊芋联合收获机的根芋分离装置,包括安装架、机架、缓冲胶指辊、块茎导向板、间隙调节机构、齿轮箱、液压马达、清杂辊子、液压油缸和间隙控制系统箱,根据当地种植菊芋块茎的数量、品种等,调整机架的倾斜角度,由块茎、根茎和杂余等组成的混合物在重力和清杂辊子的转动作用下,沿指定方向运动,在这个过程中,清杂辊子相对转动将混合物中的根茎和杂余分离出来,分离出的根茎和杂余进入根茎汇集装置,剩余的块茎流沿着指定方向撞击缓冲胶指辊,降低运动速度后按缓冲胶指辊的转动方向将块茎以较低的速度输送至其它料斗中,降低碰撞损伤。本发明实现了将块茎从根茎和断碎秸秆中分离出来,且损伤率低、含杂率低。(The invention provides a root-tuber separating device for a jerusalem artichoke combine harvester, which comprises a mounting frame, a rack, a buffer rubber finger roller, a tuber guide plate, a gap adjusting mechanism, a gear box, a hydraulic motor, a impurity removing roller, a hydraulic oil cylinder and a gap control system box, the inclination angle of the frame is adjusted according to the number, variety and the like of the tubers of the jerusalem artichoke planted locally, the mixture consisting of the tubers, the rhizomes, the sundries and the like moves along the appointed direction under the action of gravity and the rotation of the sundries removing roller, in the process, the impurity removing rollers rotate relatively to separate the rhizome and the impurity in the mixture, the separated rhizome and the impurity enter the rhizome collecting device, the rest tuber flow impacts the buffer rubber finger roller along the designated direction, and the tuber is conveyed to other hoppers at a lower speed according to the rotating direction of the buffer rubber finger roller after the movement speed is reduced, so that collision damage is reduced. The invention realizes the separation of tubers from rhizomes and broken straws, and has low damage rate and impurity content.)

1. A root-tuber separation device for a jerusalem artichoke combine harvester is characterized by comprising an installation frame (1), a frame (2), a buffer rubber finger roller (3), a tuber guide plate (4), a gap adjusting mechanism (6), a gear box (7), a hydraulic motor (9), a impurity removing roller (11), a hydraulic oil cylinder (13) and a gap control system box (14), wherein the installation frame (1) is rigidly connected to the jerusalem artichoke combine harvester through bolts or welding, two sides of the front end of the frame (2) are hinged to the installation frame (1) through pin shafts, the frame (2) can do circular motion around the installation frame (1), and two ends of the hydraulic oil cylinder (13) are hinged to the installation frame (1) and the frame (2) through pin shafts respectively; two ends of the buffering rubber finger roller (3) are respectively installed on two side plates of one end of the rack (2) far away from the jerusalem artichoke combine harvester through a bearing (15) with a seat, and a first chain wheel (5) is installed at the left end of the buffering rubber finger roller (3) outside the side plate of the rack (2); the tuber guide plate (4) is hinged at one end of the rack (2) far away from the jerusalem artichoke combine harvester, and the tuber guide plate (4) is positioned below the buffer rubber finger roller (3); the gear box (7) is rigidly fixed on the outer side of the left side plate of the frame (2), and the hydraulic motor (9) and the clearance control system box (14) are both rigidly fixed on the outer side of the right side plate of the frame (2);

the impurity removing rollers (11) are sequentially a impurity removing roller I, an impurity removing roller II, an impurity removing roller III, an impurity removing roller IV, an impurity removing roller V and an impurity removing roller VI from the position close to the jerusalem artichoke combined harvester to the position far away from the jerusalem artichoke combined harvester, the impurity removing rollers (11) are all positioned on the front side of the buffer rubber finger roller (3), the two ends of the impurity cleaning roller I, the impurity cleaning roller III and the impurity cleaning roller V are respectively installed on two side plates of the rack (2) through belt seat bearings (15), the left end of the impurity cleaning roller I is connected with a chain wheel of a power input shaft of a gear box (7) through a chain wheel in a chain transmission mode, the right end of the impurity cleaning roller I is coaxially connected with a power output shaft of a hydraulic motor (9) through a chain wheel (10) and a flat key, a double-row chain wheel (8) is installed at the right end of the impurity cleaning roller III, a chain wheel is installed at the right end of the impurity cleaning roller V, and the right ends of the impurity cleaning roller I, the impurity cleaning roller III and the impurity cleaning roller V are connected in pairs through a; two ends of the impurity removing roller II, the impurity removing roller IV and the impurity removing roller VI are respectively arranged on the clearance adjusting mechanism (6) through a bearing with a seat (15), the left ends of the impurity removing roller II, the impurity removing roller IV and the impurity removing roller VI are respectively provided with a double-row chain wheel (8), the left ends of the impurity removing roller II, the impurity removing roller IV and the impurity removing roller VI are connected in pairs through chain transmission, the left end of the impurity removing roller II is connected with a chain wheel of a power output shaft of a gear box (7) through the double-row chain wheel (8) through chain transmission, the left end of the impurity removing roller VI is connected with a first chain wheel (5) at the left end of the buffer rubber finger roller (3) through the double-row chain wheel (8), and the rotating directions of the impurity removing roller I, the impurity removing roller III, the impurity removing roller V, the impurity removing roller II, the impurity removing roller IV and the impurity removing roller VI are opposite.

2. The root and tuber separating device for the jerusalem artichoke combine harvester according to claim 1, further comprising a plurality of herb combing rods (12), wherein two ends of the herb combing rods (12) are arranged on the frame (2), the diameter of the mounting hole on the frame (2) is larger than that of the herb combing rods (12), and the herb combing rods (12) are respectively arranged on the front side of the impurity removing roller I, between the impurity removing roller II and the impurity removing roller III and between the impurity removing roller IV and the impurity removing roller V and used for scraping off roots, stems or soil blocks adhered on the impurity removing roller (11).

3. The root tuber separating device for the jerusalem artichoke combine harvester according to claim 1, wherein the buffer rubber finger roller (3) comprises a rotating shaft (31), rotating discs (32) and hollow steel pipes (33), the hollow steel pipes (33) are uniformly arranged along the edge circumference of the rotating discs (32), the two rotating discs (32) are respectively arranged at two ends of the hollow steel pipes (33), rubber fingers are uniformly embedded on the hollow steel pipes (33), the hollow steel pipes (33) between the rubber fingers are wrapped by elastic buffer belts (34), the rotating shaft (31) penetrates through the circle centers of the two rotating discs (32) and is rigidly connected with the two rotating discs, and two ends of the rotating shaft (31) are respectively arranged on the rack (2) through a bearing with a seat (15).

4. The root tuber separating device for the jerusalem artichoke combine harvester according to the claim 3, wherein the rotating direction of the rotating shaft (31) is the same as the rotating direction of the impurity removing roller VI, and the rotating speed of the rotating shaft (31) is less than that of the impurity removing roller VI.

5. The root-tuber separating device for the jerusalem artichoke combine harvester according to claim 1, wherein the impurity removing roller (11) comprises a shaft head, a hollow pipe and an elastic material, the shaft head is arranged at two ends of the hollow pipe, the elastic material is wrapped on the surface of the hollow pipe, and the surface is provided with anti-skid grains.

6. The root tuber separating device for the jerusalem artichoke combine harvester according to the claim 1, wherein the clearance adjusting mechanism (6) comprises a pair of clearance adjusting connecting rods I (64), two pairs of clearance adjusting connecting rods II (65), a long connecting rod (66), an adjusting shaft (63), a connecting piece (62) and an electric push rod (61), wherein the upper ends of the clearance adjusting connecting rods I (64) are connected with the two ends of the impurity removing roller II through a bearing with a seat (15), the lower ends of the clearance adjusting connecting rods I (64) are connected with the two ends of the adjusting shaft (63) through a flat key, and the adjusting shaft (63) and the power output shaft of the gear box (7) are coaxially arranged; the upper ends of the two pairs of gap adjusting connecting rods II (65) are respectively connected with the two ends of the impurity removing roller IV and the impurity removing roller VI through a bearing with a seat (15), and the lower ends of the two pairs of gap adjusting connecting rods II are hinged on the rack (2); the clearance adjusting connecting rod I (64) and the clearance adjusting connecting rod II (65) on the same side are connected through a long connecting rod (66) and synchronously rotate to form a parallel four-bar mechanism; one end of the connecting piece (62) is connected with the adjusting shaft (63), the other end of the connecting piece is connected with the electric push rod (61) through a sliding block mechanism, and the electric push rod (61) drives the adjusting shaft (63) to rotate anticlockwise or clockwise through extension or shortening.

7. The root tuber separating device for the jerusalem artichoke combine harvester according to claim 1, wherein the gap control system box (14) comprises a pulling pressure sensor (141), a controller and a control panel, two ends of the pulling pressure sensor (141) are respectively and rigidly connected with the electric push rod (61) and the frame (2), the pulling pressure sensor (141), the controller and the control panel are connected through cables or data transmission lines, and the pulling pressure sensor (141) is used for acquiring the stress of the electric push rod (61) and transmitting the stress to the controller and the control panel.

8. The root tuber separating device for the jerusalem artichoke combine harvester according to claim 1, wherein the included angle between the frame (2) and the horizontal is 0-40 °.

Technical Field

The invention belongs to the technical field of agricultural machinery, and particularly relates to a root-tuber separation device for a jerusalem artichoke combine harvester.

Background

Jerusalem artichoke, also known as Jerusalem artichoke and Coprinus cinereus, is a perennial herb of Helianthus of Compositae. The jerusalem artichoke has strong adaptability to the environment, can resist severe cold, salt and alkali and the like, and has great economic value, so the jerusalem artichoke has wide domestic planting range. The underground part of the jerusalem artichoke comprises fibrous roots and tubers, the root system is developed, and the yield of a single plant is high. Wherein the tuber of the jerusalem artichoke has various shapes and different sizes, some tubers are pear-shaped or irregular oval, and some tubers also have a plurality of bulges on the surface; the fibrous roots are mutually staggered and connected into a cluster, which occupies a larger volume and has certain elasticity.

In the domestic mechanical harvest of the jerusalem artichoke, a potato excavator or a jerusalem artichoke harvester is mostly adopted for harvesting, no cleaning device aiming at the characteristics of the jerusalem artichoke is provided, only the mixture of jerusalem artichoke tubers and large fibrous roots can be obtained, and the impurity content is too high. For example, Chinese patent CN107980326A discloses a jerusalem artichoke harvester, but has no corresponding cleaning device, and can only complete the work of soil screening and tuber separation from roots, and then the jerusalem artichoke tubers are cleaned from the mixture by a manual separation mode, so that the labor cost for harvesting the jerusalem artichoke is increased.

At present, for the tuber harvesting industry of the jerusalem artichoke, a tuber separating device which is used in a jerusalem artichoke combine harvester and is low in damage rate and impurity content and can separate tubers from rhizomes and broken straws is urgently needed.

Disclosure of Invention

The technical problem to be solved by the invention is to provide a root-tuber separation device for a jerusalem artichoke combine harvester, which is used for separating tubers from roots and stems and broken straws and has low damage rate and impurity rate.

The technical solution for realizing the purpose of the invention is as follows:

a root-tuber and taro separating device for a jerusalem artichoke combine harvester comprises an installation frame, a rack, a buffer rubber finger roller, a tuber guide plate, a gap adjusting mechanism, a gear box, a hydraulic motor, a impurity removing roller, a hydraulic oil cylinder and a gap control system box, wherein the installation frame is rigidly connected to the jerusalem artichoke combine harvester through bolts or welding; two ends of a buffering rubber finger roller are respectively installed on two side plates of one end of the frame far away from the jerusalem artichoke combine harvester through a bearing with a seat, and a first chain wheel is installed outside the side plate of the frame at the left end of the buffering rubber finger roller; the tuber guide plate is hinged at one end of the frame far away from the jerusalem artichoke combine harvester and is positioned below the buffer rubber finger roller; the gear box is rigidly fixed on the outer side of the left side plate of the frame, and the hydraulic motor and the clearance control system box are both rigidly fixed on the outer side of the right side plate of the frame; the impurity cleaning rollers are sequentially an impurity cleaning roller I, an impurity cleaning roller II, an impurity cleaning roller III, an impurity cleaning roller IV, an impurity cleaning roller V and an impurity cleaning roller VI from a position close to the jerusalem artichoke combined harvester to a position far away from the jerusalem artichoke combined harvester, and the impurity cleaning rollers are all positioned on the front side of the buffer rubber finger roller, wherein two ends of the impurity cleaning roller I, the impurity cleaning roller III and the impurity cleaning roller V are respectively installed on two side plates of the frame through belt seat bearings, the left end of the impurity cleaning roller I is connected with a chain wheel of a power input shaft of the gear box through the chain wheel in a chain transmission mode, the right end of the impurity cleaning roller I is coaxially connected with a power output shaft of the hydraulic motor through the chain wheel and a flat key, the right end of the impurity cleaning roller III is provided with double-row chain wheels, the right end of the impurity cleaning roller V is provided with the chain wheel, and the right ends; two ends of the impurity cleaning roller II, the impurity cleaning roller IV and the impurity cleaning roller VI are respectively arranged on the clearance adjusting mechanism through belt seat bearings, double-row chain wheels are arranged at the left ends of the impurity cleaning roller II, the impurity cleaning roller IV and the impurity cleaning roller VI, the left ends of the impurity cleaning roller II, the impurity cleaning roller IV and the impurity cleaning roller VI are connected in pairs through chain transmission, the left end of the impurity cleaning roller II is connected with a chain wheel of a power output shaft of a gear box through the double-row chain wheels through chain transmission, the left end of the impurity cleaning roller VI is connected with a first chain wheel at the left end of a buffer rubber finger roller through the double-row chain wheel through chain transmission, and the rotating directions of the impurity cleaning roller I, the impurity cleaning roller III and the impurity cleaning roller V are opposite to the rotating directions of the impurity cleaning roller II, the impurity cleaning roller IV and the impurity.

Furthermore, the root and tuber separating device for the jerusalem artichoke combine harvester further comprises a plurality of tuber combing rods, two ends of each tuber combing rod are installed on the rack, the diameter of an installation hole in the rack is larger than that of each tuber combing rod, and the plurality of tuber combing rods are respectively arranged on the front side of the impurity cleaning roller I, between the impurity cleaning roller II and the impurity cleaning roller III and between the impurity cleaning roller IV and the impurity cleaning roller V and used for scraping rhizomes or soil blocks adhered to the impurity cleaning rollers.

Furthermore, the root-tuber and taro separating device for the jerusalem artichoke combine harvester comprises a buffer rubber finger roller, a plurality of hollow steel pipes and two rubber fingers, wherein the buffer rubber finger roller comprises a rotating shaft, rotating discs and hollow steel pipes, the hollow steel pipes are uniformly arranged along the edge circumference of the rotating discs, the two rotating discs are respectively arranged at two ends of the hollow steel pipes, the rubber fingers are uniformly embedded on the hollow steel pipes, the hollow steel pipes between the rubber fingers are wrapped by elastic buffer belts, the rotating shaft penetrates through the circle centers of the two rotating discs and is rigidly connected with the rotating shafts, and two ends of the rotating shaft are respectively arranged on a rack through a bearing with a.

Furthermore, the rotating direction of the rotating shaft is the same as that of the impurity removing roller VI, and the rotating speed of the rotating shaft is less than that of the impurity removing roller VI.

Furthermore, the impurity removing roller comprises shaft heads, a hollow pipe and an elastic material, wherein the shaft heads are arranged at two ends of the hollow pipe, and the elastic material is wrapped on the surface of the hollow pipe and provided with anti-skid grains.

Furthermore, the root-tuber separation device for the jerusalem artichoke combine harvester comprises a pair of gap adjusting connecting rods I, two pairs of gap adjusting connecting rods II, a long connecting rod, an adjusting shaft, a connecting piece and an electric push rod, wherein the upper ends of the pair of gap adjusting connecting rods I are connected with the two ends of the impurity removing rollers II through a bearing with a seat, the lower ends of the pair of gap adjusting connecting rods I are connected with the two ends of the adjusting shaft through a flat key, and the adjusting shaft and a power output shaft of a gear box are coaxially arranged; the upper ends of the two pairs of gap adjusting connecting rods II are respectively connected with the two ends of the impurity removing roller IV and the impurity removing roller VI through a bearing with a seat, and the lower ends of the two pairs of gap adjusting connecting rods II are hinged on the rack; the gap adjusting connecting rod I and the gap adjusting connecting rod II on the same side are connected through a long connecting rod and synchronously rotate to form a parallel four-bar mechanism; one end of the connecting piece is connected with the adjusting shaft, the other end of the connecting piece is connected with the electric push rod through the sliding block mechanism, and the electric push rod drives the adjusting shaft to rotate anticlockwise or clockwise through extension or shortening.

Furthermore, the root tuber separating device for the jerusalem artichoke combine harvester comprises a controller and a control panel, wherein the controller is connected with a pulling pressure sensor through a cable or a data transmission line, and two ends of the pulling pressure sensor are respectively and rigidly connected with an electric push rod and a frame.

Furthermore, the root-tuber separation device for the jerusalem artichoke combine harvester has an included angle between the rack and the horizontal plane of 0-40 degrees.

Compared with the prior art, the invention adopting the technical scheme has the following technical effects:

1. according to the root-tuber separation device for the jerusalem artichoke combine harvester, the inclination angle of the rack is changed, so that the jerusalem artichoke tubers are not clamped between the two impurity removing rollers during movement, the damage of the impurity removing rollers to the tubers is reduced, and the flowability of the tubers is improved;

2. according to the root-tuber separation device for the jerusalem artichoke combine harvester, the buffer rubber finger roller is arranged at the tail end, so that tuber flow on the impurity cleaning roller greatly slows down the movement speed of tubers by impacting the elastic material on the buffer rubber finger roller, and then the tubers are swept out at a lower speed according to the rotation direction of the buffer rubber finger roller;

3. the root-tuber separating device for the jerusalem artichoke combine harvester realizes synchronous adjustment of rotating gaps of a plurality of pairs of impurity removing rollers by utilizing mechanisms such as parallel four-connecting rods, sliding blocks and the like;

4. the root taro separating device for the jerusalem artichoke combine harvester obtains the working load condition of the machine by using the clearance control system, and changes the size of the clearance according to the control, thereby not only ensuring the separation effect of the root taro, but also reducing the damage to tubers.

Drawings

FIG. 1 is a front isometric view of the chain removal of the root taro separation device for a jerusalem artichoke combine of the present invention.

FIG. 2 is a rear perspective view of the chain-removed root-tuber separating device for a Jerusalem artichoke combine harvester of the present invention.

Fig. 3 is an isometric view of a gap adjustment mechanism of the root taro separation device for a jerusalem artichoke combine of the present invention.

Fig. 4 is an isometric view of a frame of the root taro separating device for a jerusalem artichoke combine of the present invention.

FIG. 5 is an isometric view of the buffering glue finger roller of the root taro separating device for the combined harvester of Jerusalem artichoke of the invention.

Reference signs mean: 1. a mounting frame; 2. a frame; 3. a buffer rubber finger roller; 31. a rotating shaft; 32. rotating the disc; 33. a hollow steel pipe; 34. a buffer zone; 4. a tuber guide plate; 5. a first sprocket; 6. a gap adjustment mechanism; 61. an electric push rod; 62. a connecting member; 63. an adjustment shaft; 64. a gap adjusting connecting rod I; 65. a gap adjusting connecting rod II; 66 long connecting rods; 7. a gear case; 8. double-row chain wheels; 9. a hydraulic motor; 10. a sprocket III; 11. cleaning the impurity roller; 12. a grass combing rod; 13. a hydraulic cylinder; 14. a clearance control system box; 141. a pull pressure sensor; 15. a pedestal bearing.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

A root-tuber separating device for a jerusalem artichoke combine harvester comprises an installation frame 1, a rack 2, a buffer rubber finger roller 3, a tuber guide plate 4, a gap adjusting mechanism 6, a gear box 7, a hydraulic motor 9, a impurity removing roller 11, a hydraulic oil cylinder 13 and a gap control system box 14.

The mounting frame 1 is rigidly connected to the jerusalem artichoke combine through bolts or welding, two sides of the front end of the rack 2 are hinged to the mounting frame 1 through hinge pins, the rack 2 can move circularly around the mounting frame 1, an included angle between the rack 2 and the horizontal plane is 0-40 degrees, and two ends of the hydraulic oil cylinder 13 are respectively hinged to the mounting frame 1 and the rack 2 through hinge pins. The hydraulic oil cylinder 13 adopts a single-acting oil cylinder, and the angle between the frame 2 and the mounting frame 1 is changed through the extension and contraction of the hydraulic oil cylinder 13, so that the flowing direction of the jerusalem artichoke tubers forms a certain included angle with the horizontal direction, and the angle adjustment range is 0-40 degrees because the friction angle of the jerusalem artichoke tubers to elastic materials such as rubber and the like is more than 25 degrees

Two ends of a buffer rubber finger roller 3 are respectively arranged on two side plates of one end of the frame 2 far away from the jerusalem artichoke combine harvester through a bearing 15 with a seat, a first chain wheel 5 is arranged outside the side plate of the frame 2 at the left end of the buffer rubber finger roller 3, and the buffer rubber finger roller 3 is arranged to reduce the movement speed of the jerusalem artichoke tubers, reduce the collision damage of the tubers and enable the tubers to move according to a specified route. The buffer rubber finger roller 3 comprises a rotating shaft 31, rotating discs 32 and hollow steel pipes 33, the hollow steel pipes 33 are uniformly installed along the edge circumference of the rotating discs 32, the two rotating discs 32 are respectively arranged at two ends of each hollow steel pipe 33, rubber fingers are uniformly embedded on the hollow steel pipes 33, the hollow steel pipes 33 between the rubber fingers are wrapped by elastic buffer belts 34, the rotating shaft 31 penetrates through the circle centers of the two rotating discs 32 and is rigidly connected with the rotating shaft, and two ends of the rotating shaft 31 are respectively installed on the rack 2 through belt seat bearings 15. The rotating direction of the rotating shaft 31 is the same as that of the impurity removing rollers VI, and the rotating speed of the rotating shaft 31 is less than that of the impurity removing rollers VI.

The tuber guide plate 4 is hinged at one end of the frame 2 far away from the jerusalem artichoke combine harvester, and the tuber guide plate 4 is positioned below the buffer rubber finger roller 3.

The gear box 7 is rigidly fixed on the outer side of the left side plate of the frame 2, and the transmission ratio is 1: 1 for changing the direction of the rotation speed. The hydraulic motor 9 and the clearance control system box 14 are both rigidly fixed on the outer side of the right side plate of the frame 2. The gap control system box 14 comprises a pulling pressure sensor 141, a controller and a control panel, two ends of the pulling pressure sensor 141 are respectively and rigidly connected with the electric push rod 61 and the rack 2, the pulling pressure sensor 141, the controller and the control panel are connected through cables or data transmission lines, and the pulling pressure sensor 141 is used for acquiring stress of the electric push rod 61 and transmitting the stress to the controller and the control panel. The pulling pressure sensor 141 monitors the force borne by the electric push rod 61 in real time, the controller calculates the working load of the impurity removing rollers 11 through an algorithm, if the working load is changed greatly, the controller gives a signal to the electric push rod 61 to change the extending length of the electric push rod, then the gap between the impurity removing rollers is changed, the separation effect of rhizome impurities is increased, and meanwhile, the gap between the impurity removing rollers can be changed manually through the control panel.

The impurity removing roller 11 comprises shaft heads, hollow pipes and elastic materials, the shaft heads are installed at two ends of the hollow pipes, the elastic materials are wrapped on the surfaces of the hollow pipes, anti-skid grains are arranged on the surfaces of the elastic materials, and the grabbing capacity of the roller is improved. The impurity removing rollers 11 are sequentially a impurity removing roller I, an impurity removing roller II, an impurity removing roller III, an impurity removing roller IV, an impurity removing roller V and an impurity removing roller VI from the position close to the jerusalem artichoke combined harvester to the position far away from the jerusalem artichoke combined harvester, the impurity removing rollers 11 are all positioned on the front side of the buffer rubber finger roller 3, the two ends of the impurity removing roller I, the impurity removing roller III and the impurity removing roller V are respectively installed on two side plates of the rack 2 through belt seat bearings 15, the left end of the impurity removing roller I is connected with a chain wheel of a power input shaft of the gear box 7 through a chain wheel in a chain transmission mode, the right end of the impurity removing roller I is coaxially connected with a power output shaft of the hydraulic motor 9 through a chain wheel 10 and a flat key, a double-row chain wheel 8 is installed at the right end of the impurity removing roller III, a chain wheel is installed at the right end of the impurity removing roller V, and the right ends of the impurity removing roller I, the impurity removing roller III and the impurity removing roller V are connected in pairs through the chain transmission mode so that the.

Two ends of the impurity removing roller II, the impurity removing roller IV and the impurity removing roller VI are respectively arranged on the clearance adjusting mechanism 6 through belt seat bearings 15, double-row chain wheels 8 are arranged at the left ends of the impurity removing roller II, the impurity removing roller IV and the impurity removing roller VI, the left ends of the impurity removing roller II, the impurity removing roller IV and the impurity removing roller VI are connected in pairs through chain transmission, the left end of the impurity removing roller II is connected with a chain wheel of a power output shaft of a gear box 7 through the double-row chain wheels 8 through chain transmission, the left end of the impurity removing roller VI is connected with a first chain wheel 5 at the left end of a buffer rubber finger roller 3 through the double-row chain wheels 8 through chain transmission, and the rotating directions of the impurity removing roller I, the impurity removing roller III and the impurity removing roller V are opposite to those of the impurity removing roller II, the impurity removing roller IV and the impurity removing.

The clearance adjusting mechanism 6 comprises a pair of clearance adjusting connecting rods I64, two pairs of clearance adjusting connecting rods II 65, a long connecting rod 66, an adjusting shaft 63, a connecting piece 62 and an electric push rod 61, wherein the upper ends of the clearance adjusting connecting rods I64 are connected with the two ends of the impurity cleaning roller II through a bearing with a seat 15, the lower ends of the clearance adjusting connecting rods I64 are connected with the two ends of the adjusting shaft 63 through flat keys, and the adjusting shaft 63 and the power output shaft of the gear box 7 are coaxially arranged; the upper ends of the two pairs of clearance adjusting connecting rods II 65 are respectively connected with the two ends of the impurity removing roller IV and the impurity removing roller VI through the bearing with a seat 15, and the lower ends of the two pairs of clearance adjusting connecting rods II are hinged on the rack 2; the clearance adjusting connecting rod I64 and the clearance adjusting connecting rod II 65 on the same side are connected through a long connecting rod 66 to form a parallel four-bar mechanism, and the clearance adjusting mechanism synchronously rotates to synchronously adjust the clearance between the impurity cleaning rollers; one end of the connecting piece 62 is connected with the adjusting shaft 63, the other end of the connecting piece is connected with the electric push rod 61 through a slide block mechanism, the electric push rod 61 drives the adjusting shaft 63 to rotate anticlockwise or clockwise through extension or shortening, and the gap adjusting connecting rod I64 and the gap adjusting connecting rod II 65 swing correspondingly, so that the working gap between the impurity removing rollers can be changed synchronously.

Also comprises a plurality of grass combing rods 12, and two ends of the grass combing rods 12 are arranged on the frame 2. In order to reduce the abrasion of the sundries adhered on the sundries removing roller 11 to one side of the grass combing rod 12, the diameter of the mounting hole on the frame 2 is required to be larger than the diameter of the grass combing rod 12, so that the grass combing rod can rotate under the action of friction force. The grass combing rods 12 are respectively arranged on the front side of the impurity removing roller I, between the impurity removing roller II and the impurity removing roller III and between the impurity removing roller IV and the impurity removing roller V and used for scraping off rhizomes or soil blocks adhered to the impurity removing roller 11.

All chain transmissions of the device only adopt a speed reduction ratio between the impurity cleaning roller IV and the buffering rubber finger roller, other speed reduction ratios are all constant-speed transmission, and hydraulic power is from the outside.

The working principle of the device is as follows:

the device is arranged on a jerusalem artichoke combine harvester, the inclination angle of the frame 2 is adjusted according to the number, varieties and the like of tubers of the jerusalem artichoke planted locally, and a mixture consisting of tubers, rhizomes, sundries and the like moves along a specified direction under the action of gravity and the rotation of the sundry removing roller 11. In the process, the impurity removing rollers rotate relatively to separate the rhizomes and impurities in the mixture from the mixture, wherein the separated rhizomes and impurities enter a rhizomes collecting device, the rest tuber flow impacts the elastic material on the buffer rubber finger roller 3 along a specified direction to reduce the movement speed of the tubers, and then the tubers are conveyed to other conveying devices or hoppers at a lower speed according to the rotation direction of the buffer rubber finger roller 3 to reduce the collision damage of the tubers. During the separation process, the gap control system box 14 acquires the working load of the device, and the built-in algorithm makes a decision and changes correspondingly through the gap adjusting mechanism 6.

The foregoing is directed to embodiments of the present invention and, more particularly, to a method and apparatus for controlling a power converter in a power converter, including a power converter, a power.