AU2021104110A4 - Welsh onion combine harvester - Google Patents

Abstract

A welsh onion combine harvester is provided, wherein, a soil separating apparatus, a digging apparatus, a soil shaking and conveying apparatus and a paving and collecting apparatus are arranged on a rack in sequence from front to back. By means of the welsh onion combine harvester, soil separating digging operation, soil shaking operation, clamping and conveying operation and paving and collecting operation in the welsh onion harvesting link are guaranteed, thereby improving the mechanical welsh onion operation level in domestic and guaranteeing the welsh onion harvesting quality and output. 5 Fig.1 1/8

Description

Fig.1

1/8

WELSH ONION COMBINE HARVESTER TECHNICAL FIELD

The present application relates to agricultural machinery, and in particular to a welsh onion combine harvester.

BACKGROUND OF THE PRESENT INVENTION

Welsh onions, one of major leaf vegetables in China, have a large planting area and a large output, and the planting area of welsh onions in Shandong province alone in 2019 reach up to 1.5 million mu. As welsh onions have the characteristics of heat resistance, cold resistance and high adaptability, the welsh onions can be nearly produced all the year in planting industry in China.

In a welsh onion production link, the most critical link is harvesting, and high or low quality of harvesting the welsh onions has a direct influence on the final benefit. By adopting a conventional manual harvesting method which is tedious in harvesting link and will consume a lot of labor forces, the production cost is increased. Mechanical harvesting featuring on high efficiency, low harvesting cost and the like and has become the major harvesting mode of welsh onions at present. But existing welsh onion harvesting machines mainly realize digging of welsh onions rather than combine harvesting of welsh onions, including digging, soil removing, conveying, paving and collecting of welsh onions. Therefore, the welsh onion harvester in domestic is still in the blank in the combine harvesting technology and apparatus.

Reference to any prior art in the specification is not, and should not be taken as, an acknowledgment or any form of suggestion that this prior art forms part of the common general knowledge in Australia or any other jurisdiction or that this prior art could reasonably be expected to be understood and regarded as relevant by a person skilled in the art.

SUMMARY OF THE PRESENT INVENTION

An object of the present application is to overcome the defects in the prior art and provide a welsh onion combine harvester which realizes soil separating, digging, soil shaking, clamping and conveying and paving and collecting in a welsh onion harvesting link, thereby improving the mechanical operation level of the welsh onion harvesting process and guaranteeing the welsh onion harvesting quality and output.

A technical solution of the present application is as follows: a welsh onion combine harvester comprises a rack, and further comprises a soil separating apparatus, a digging apparatus, a soil shaking and conveying apparatus and a paving and collecting apparatus; the soil separating apparatus, the digging apparatus, the soil shaking and conveying apparatus and the paving and collecting apparatus are arranged on the rack in sequence from front to back;

the soil separating apparatus comprises two disc soil separating rakes located on a same horizontal plane and first hydraulic motors, the two disc soil separating rakes are located at a bottom of the rack and are arranged symmetrically, a middle portion of each disc soil separating rake is provided with a central rotating shaft, the central rotating shaft is hinged to a bottom of a supporting rod, a top of the supporting rod is fixedly connected with a first rotating shaft, each first hydraulic motor is fixed to a top end of the first rotating shaft, the first hydraulic motor is in transmission connection with the central rotating shaft of the disc soil separating rake through a chain, a sliding plate is fixed to an upper end of the first rotating shaft, the sliding plate is slidably connected with a fixed plate behind the sliding plate, the fixed plate is fixedly connected with a rotating flange behind the fixed plate, and the rotating flange is connected with a front end of the rack;

the digging apparatus comprises two digging brackets arranged in parallel, a digging shovel, a slider-crank mechanism and a ground breaking mechanism, each of the digging brackets is L-shaped and comprises a vertical bracket and a horizontal bracket connected perpendicularly, a front end of the horizontal bracket is provided with a fourth sliding chute, a back end of the horizontal bracket is fixedly connected with a bottom of the vertical bracket, a top of the vertical bracket is fixedly connected with the rack, the digging shovel is located between the two digging brackets; a first sliding rod and a second sliding rod are fixed to each of two outer side walls of the digging shovel, wherein, the first sliding rod is located in a middle portion of each side wall, the second sliding rod is located on a back portion of each side wall, end portions of both the first sliding rod and the second sliding rod are arranged in the fourth sliding chute and are capable of sliding in the fourth sliding chute, and the second sliding rod is connected with the vertical bracket through the slider-crank mechanism; the ground breaking mechanism is located at the front end of the horizontal bracket and comprises a second hydraulic motor, a rotating disc and ground breaking rollers, a third rotating shaft is fixed to a bottom of the rotating disc, an output shaft of the second hydraulic motor is in transmission connection with a bottom of the third rotating shaft of the rotating disc through a bevel gear, and a plurality of ground breaking rollers are fixed to a circumferential outer side wall of the rotating disc at intervals; and the soil shaking and conveying apparatus comprises a soil shaking mechanism and a conveying mechanism, the soil shaking mechanism is located behind the digging shovel and is connected with the digging mechanism, the conveying mechanism is located above the soil shaking mechanism ; the soil shaking mechanism comprises a third hydraulic motor, a second rotating shaft, a shaft sleeve, a connecting column and a soil shaking rollers, one end of the second rotating shaft is connected with an output end of a the third hydraulic motor, the an other end of the second rotating shaft is sleeved with the shaft sleeve externally, the second rotating shaft is in key joint to with the shaft sleeve, one end of the shaft sleeve is provided with an opening, the an other end of the shaft sleeve is connected with an second eccentric wheel, a top of the connecting column is fixedly connected with the second eccentric wheel, a bottom of the connecting column is connected with a second connecting rod, a back end of the second connecting rod is hinged with the connecting column, a front end of the second connecting rod is fixedly connected with a third connecting rod, two ends of the third connecting rod are respectively hinged with a first connecting rod on each side, the third connecting rod is axially provided with a plurality of soil shaking rollers at intervals, and front ends of the soil shaking rollers are fixedly connected with the third connecting rod.

In some embodiments, two rotating plates are axially fixed to the first rotating shaft in an axial direction of the first rotating shaft at an interval, the two rotating plates are located above and below the sliding plate respectively, each rotating plate is provided with an arc-shaped first sliding chute, and a first bolt penetrates through the first sliding chute in each rotating plate and is fixedly connected with the sliding plate; the sliding plate is in sliding connection with the fixed plate, the sliding plate is provided with a second sliding chute a front side surface of the fixed plate is provided with a sliding protrusion correspondingly, the sliding protrusion is arranged in the second sliding chute and slides along the second sliding chute, and a second bolt penetrates through the second sliding chute and is fixedly connected with the fixed plate; the rotating flange is rotatably connected with the front end of the rack, the rotating flange is provided with an arc-shaped third sliding chute, and a third bolt penetrates through the third sliding chute and is fixedly connected with the front end of the rack.

In some embodiments, a front portion of the fourth sliding chute is provided with a fixed hole, a stop block is placed in the fixed hole, and the stop block is located behind an end portion of the first sliding rod. When it is unnecessary to dig in a vibrating mode, the slider-crank mechanism stops acting, and the stop block is placed in the fixed hole. In the digging process, the digging shovel will be subjected to digging resistance. The stop block is used for preventing the digging shovel from moving backward as a result of digging resistance, and thereby, fixed digging of the digging shovel is realized.

In some embodiments, the slider-crank mechanism comprises a first eccentric wheel and the first connecting rod, the first eccentric wheel is hinged with the vertical bracket, an eccentric rod of the first eccentric wheel is connected with one end of the first connecting rod, and an other end of the first connecting rod is hinged with the second sliding rod.

In some embodiments, the conveying mechanism comprises conveyor belts and a conveyor belt rack, the conveyor belts are arranged on the conveyor belt rack, two conveyor belts are arranged obliquely, front ends of the two conveyor belts are lower than back ends of the two conveyor belts, rotating directions of the two conveyor belts are reverse, the front ends of the two conveyor belts are located above the soil shaking mechanism, a back end of the conveyor belt rack is provided with a front-back position adjusting rod, a top end of the front-back position adjusting rod is hinged with the back end of the conveyor belt rack, a bottom end of the front-back position adjusting rod is connected with a slide block fixed to the rack, the slide block is provided with a fifth sliding chute parallel to a direction of the conveyor belts, the bottom end of the front-back position adjusting rod is provided with a protrusion correspondingly, the protrusion is arranged in the fifth sliding chute and slides in the fifth sliding chute; a height adjusting rod is fixed to a middle portion of the conveyor belt rack, and a top of the height adjusting rod is connected with a top rack of the rack via a hydraulic rod. In a stretching process of the hydraulic rod, the conveyor belt rack swings along the top of the height adjusting rod, such that upper and lower positions of a front end of the conveyor belt rack are adjusted. The upper and lower and front and back positions of the conveyor belts are adjusted, such that the conveying mechanism can clamp welsh onions of various varieties at different heights.

In some embodiments, the paving and collecting apparatus comprises a paving mechanism and a collecting mechanism, the paving mechanism is located behind the conveying mechanism, the collecting mechanism is located behind the paving mechanism, the paving mechanism comprises two rubber discs, clamping sheets and Y-type connectors, the two rubber discs are symmetrically fixed to a rubber disc shaft, middle portions of outer sides of the two rubber discs are provided with the clamping sheets which apply inward clamping forces respectively, the clamping sheets are fixedly connected with the rack, the Y-type connectors which apply outward supporting forces are respectively arranged between the two rubber discs right below the conveying mechanism and between the two rubber discs facing the collecting mechanism, two ends of a top of each Y-type connector are attached to inner walls of the two rubber discs respectively, a bottom of each Y-type connector is fixedly connected with the rack, and end portions of the rubber disc shaft are respectively connected with a rubber disc bracket.

In some embodiments, the rubber disc bracket is provided with a sixth sliding chute in a horizontal direction, each end portion of the rubber disc shaft is arranged in the sixth sliding chute and moves front and back in the sixth sliding chute, the rubber disc bracket is slidably connected with a height adjusting bracket, the height adjusting bracket is fixed to the rack, the rubber disc bracket is provided with a seventh sliding chute in a vertical direction, and a fourth bolt penetrates through the seventh sliding chute and is connected with the height adjusting bracket.

In some embodiments, the collecting mechanism comprises a side conveying belt and a collecting box located behind one side of the side conveying belt; the side conveying belt is located on a rear lower side of the paving mechanism, the side conveying belt is provided with a stacking inclined plate and a stacking baffle plate along a tail end of a moving direction of the side conveying belt, the stacking inclined plate is arranged along a direction of the side conveying belt, the stacking baffle plate is arranged perpendicular to the direction of the side conveying belt, the stacking baffle plate is located above the stacking inclined plate, an included angle is formed between the stacking inclined plate and the horizontal direction, an end of the stacking inclined plate facing a tail end of the side conveying belt is lower than an other end of the stacking inclined plate; side surfaces of the tail end of the side conveying belt are provided with stacking side plates respectively, the stacking side plates are fixedly connected with the side conveying belt, the stacking baffle plate is connected with each stacking side plate through an incomplete gear intermittent mechanism; the incomplete gear intermittent mechanism comprises an incomplete gear and a gear, the incomplete gear is hinged with a top of the stacking side plate, tops of the stacking side plate and the stacking baffle plate are connected through a fourth rotating shaft, the gear is fixed to one end of the fourth rotating shaft, and the gear is engaged with the incomplete gear.

The present application has the beneficial effects as below.

Soil separating digging operation, soil shaking operation, clamping and conveying operation and paving and collecting operation in the welsh onion harvesting link are guaranteed, thereby improving the mechanical welsh onion operation level in domestic and guaranteeing the welsh onion harvesting quality and output.

As used herein, except where the context clearly requires otherwise, the term "comprise" and variations of the term, such as "comprising", "comprises" and "comprised", are not intended to exclude further features, components, integers or steps.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic structural diagram of the present application;

Fig. 2 is a schematic structural diagram of a soil separating apparatus;

Fig. 3 is a first schematic structural diagram of a digging apparatus;

Fig. 4 is a second schematic structural diagram of the digging apparatus;

Fig. 5 is a schematic structural diagram of a ground breaking mechanism;

Fig. 6 is a schematic structural diagram of a soil shaking mechanism;

Fig. 7 is a schematic structural diagram of a conveying mechanism;

Fig. 8 is a first schematic structural diagram of a paving mechanism;

Fig. 9 is a second schematic structural diagram of the paving mechanism;

Fig. 10 is a first schematic structural diagram of the conveying mechanism;

Fig. 11 is a second schematic structural diagram of the conveying mechanism.

In the drawings, 1 rack; 101 top rack; 2 soil separating apparatus; 201 disc soil separating rake; 202 supporting rod; 203 first rotating shaft; 204 rotating plate; 205 first hydraulic motor; 206 fixed plate; 207 rotating flange; 208 sliding plate; 3 digging apparatus; 301 vertical bracket; 302 horizontal bracket; 303 digging shovel; 304 first connecting rod; 305 first eccentric wheel; 306 fourth sliding chute; 307 second sliding rod; 308 fixed hole; 309 first sliding rod; 310 ground breaking roller; 311 rotating disc; 312 second hydraulic motor; 4 soil shaking and conveying apparatus; 401 third hydraulic motor; 402 second rotating shaft; 403 key; 404 shaft sleeve; 405 second eccentric wheel; 406 connecting column; 407 second connecting rod; 408 third connecting rod; 409 soil shaking roller; 410 front-back position adjusting rod; 411 slide block; 412 height adjusting rod; 413 hydraulic rod; 5 paving and collecting apparatus; 501 rubber disc bracket; 502 height adjusting bracket; 503 rubber disc; 505 clamping sheet; 506 rubber disc shaft; 507 Y-type connector; 508 side conveying belt; 509 stacking inclined plate; 510 stacking baffle plate; 511 stacking side plate; 512 incomplete gear; 513 gear.

DETAILED DESCRIPTION OF THE PRESENT INVENTION

In order to make purposes, features and advantages of the present application more obvious and understandable, embodiments of the present application will be described in detail below in combination with the drawings.

Specific details in the description below are illustrated for adequate understanding of the present application. However, the present application can be implemented by various other embodiments different from embodiments described herein, and those skilled in the art can make similar extensions popularization without deviating from connotation of the present application. Therefore, the present application is not limited by specific embodiments disclosed below.

As shown in the Fig. 1, the welsh onion combine harvester of the present application comprises a rack 1, a soil separating apparatus 2, a digging apparatus 3, a soil shaking and conveying apparatus 4 and a paving and collecting apparatus 5; the soil separating apparatus 2, the digging apparatus 3, the soil shaking and conveying apparatus 4 and the paving and collecting apparatus 5 are arranged on the rack 1 in sequence from front to back. A bottom of the rack 1 is provided with a caterpillar band transmission apparatus, and the whole harvester advances as the caterpillar band rotates.

A soil separating apparatus 2 is located at a frontmost end of the rack 1. As shown in the Fig. 2, the soil separating apparatus 2 comprises two disc soil separating rakes 201 located on a same horizontal plane and first hydraulic motors 205 which provide powers to the disc soil separating rakes. In the present application, the two disc soil separating rakes 201 are located at a bottom of the rack and are arranged symmetrically, a middle portion of each disc soil separating rake 201 is provided with a central rotating shaft, the central rotating shaft is hinged to a bottom of a supporting rod 202, a top of the supporting rod 202 is fixedly connected with a first rotating shaft 203, each first hydraulic motor 205 is fixed to a top end of the first rotating shaft 203, the first hydraulic motor 205 is in transmission connection with the central rotating shaft of the disc soil separating rake 201 through a chain; a first chain wheel is fixed to an end portion of the central rotating shaft of the disc soil separating rake 201, a second chain wheel is fixed to an output shaft of the first hydraulic motor 205, and the two chain wheels are wound with a chain. The first hydraulic motor 205 drives the disc soil separating rake 201 to rotate via the chain and the disc soil separating rakes 201 realizes soil ridging and soil separating, such that resistance in the welsh onion digging process is reduced. A sliding plate 208 is fixed to an upper end of the first rotating shaft 203 and the sliding plate 208 is slidably connected with a fixed plate 206 behind the sliding plate. The fixed plate 206 is fixedly connected with a rotating flange 207 behind the fixed plate and the rotating flange 207 is connected with a front end of the rack 1.

In the present application, a drift angle, i.e., an included angle between the disc soil separating rake 201 and an advancing direction, of the disc soil separating rake 201 is adjustable, such that it is convenient to cut and crush soil better by the disc soil separating rake. Several rotating plates 204 are fixed to the first rotating shaft 203 in an axial direction of the first rotating shaft at an interval. In the present embodiment, there are two rotating plates 204 which are located above and below the sliding plate 208, respectively, each rotating plate 204 is provided with an arc-shaped first sliding chute, and a first bolt penetrates through the first sliding chute in the rotating plate 204 and is fixedly connected with the sliding plate 208. When the first bolt is fastened, the sliding plate 208 is fixedly connected with the rotating plate 204 at the moment, such that the first rotating shaft 203 connected to the rotating plate 204 is fixed, and at the moment, the drift angle of the disc soil separating rake is fixed. When it is necessary to adjust the drift angle of the disc soil separating rake, the first bolt between the sliding plate 208 and the rotating plate 204 is loosened, and at the moment, the rotating plates 204 can rotate, and the rotating plates 204 rotates and drives the first rotating shaft 203 to rotate, such that the drift angle of the disc soil separating rake at a bottom of the first rotating shaft is adjusted. When the drift angle of the disc soil separating rake is adjusted to a proper angle, the first bolt is screwed again to fix the drift angle of the disc soil separating rake.

In the present application, a distance between the two disc soil separating rakes 201 is adjustable, such that it is convenient to separate ridge soil of different dimensions. The sliding plate 208 is slidably connected with the fixed plate 206. In the present embodiment, the sliding plate 208 is provided with a second sliding chute, a front side surface of the fixed plate 206 is provided with a sliding protrusion, correspondingly, the sliding protrusion is arranged in the second sliding chute and is capable of sliding along the second sliding chute, and a second bolt penetrates through the second sliding chute and is fixedly connected with the fixed plate 206. When it is necessary to adjust the distance between the two disc soil separating rakes 201, the second bolt is loosened, such that the sliding plate 208 slides left and right along the fixed plate 206, and therefore, the distance between the two disc soil separating rakes 201 is adjusted. When the distance between the two disc soil separating rakes 201 is adjusted to a proper distance, the second bolt is screwed to fix the distance between the two disc soil separating rakes 201.

In the present application, an inclination angle, i.e., an included angle between the disc soil separating rake and the ground, of the disc soil separating rake is adjustable, such that it is convenient to cut soil better by the disc soil separating rakes. The rotating flange 207 is rotatably connected with the front end of the rack 1, and meanwhile, the rotating flange 207 is provided with an arc-shaped third sliding chute, and a third bolt penetrates through the third sliding chute and is fixedly connected with the front end of the rack. When the third bolt is screwed, the rotating flange 207 is fixedly connected with the rack, such that the inclination angle of the disc soil separating rake is fixed. When it is necessary to adjust the inclination angle of the disc soil separating rake 201, the third bolt is unscrewed, such that the rotating flange 207 rotates around the rack 1. The rotating flange 207 rotates and drives the whole soil separating apparatus to rotate, such that the included angle between the disc soil separating rake and the ground is changed. When the inclination angle of the disc soil separating rake is rotated to a proper angle, the third bolt is screwed to fix the inclination angle of the disc soil separating rake.

The digging apparatus 3 is located behind the disc soil separating soil rake 201. As shown in the Fig. 3 and Fig. 4, the digging apparatus comprises digging brackets, a digging shovel 303, a slider-crank mechanism connecting the digging bracket to the digging shovel 303 and a ground breaking mechanism. The digging apparatus comprises two digging brackets arranged in parallel, each of the digging brackets is L-shaped and comprises a vertical bracket 301 and a horizontal bracket 302 connected perpendicularly, a front end of the horizontal bracket 302 is provided with a fourth sliding chute 306, a back end of the horizontal bracket 302 is fixedly connected with a bottom of the vertical bracket 301, a top of the vertical bracket 301 is fixedly connected with the rack 1. The digging shovel 303 is located between the two digging brackets and is connected with front portions of the digging brackets. The digging shovel works in mud to dig roots of welsh onions. A first sliding rod 309 and a second sliding rod 307 are fixed to each of two outer side walls of the digging shovel 303, wherein the first sliding rod 309 is located in a middle portion of each side wall, the first sliding rod 309 plays a role of supporting the digging shovel 303, the second sliding rod 307 is located on a back portion of each side wall, and the second sliding rod 307 plays a role of guiding a reciprocating motion of the digging shovel 303. End portions of both the first sliding rod 309 and the second sliding rod 307 are arranged in the fourth sliding chute 306 and are capable of sliding in the fourth sliding chute 306. The second sliding rod 307 is connected with the vertical bracket 301 through the slider-crank mechanism, and digging in the vibrating mode of the digging shovel 303 is achieved by means of the slider-crank mechanism. A front portion of the fourth sliding chute 306 is provided with a fixed hole, a stop block can be placed in the fixed hole, and the stop block is located behind an end portion of the first sliding rod 309. When it is unnecessary to dig in a vibrating mode, the slider-crank mechanism stops acting, and the stop block is placed in the fixed hole. In the digging process, the digging shovel will be subjected to digging resistance. The stop block is used for preventing the digging shovel from moving backward as a result of the digging resistance, and thereby, fixed digging of the digging shovel is realized.

The slider-crank mechanism comprises a first eccentric wheel 305 and a first connecting rod 304, the first eccentric wheel 305 is hinged with the vertical bracket 301, an eccentric rod of the first eccentric wheel 305 is connected with one end of the first connecting rod 304, and an other end of the first connecting rod 304 is hinged with the second sliding rod 307. In a rotating process, the first eccentric wheel 305 drives the first connecting rod 304 to move front and back, and at the moment, under a guiding action of the fourth sliding chute 306, the second sliding rod 307 moves in a reciprocating manner front and back in the fourth sliding chute 306, so as to drive the digging shovel 303 to move in a reciprocating manner front and back, thereby achieving front-back vibrating and digging of the digging shovel. As the slider-crank mechanism has a quick-return characteristic, a speed of the digging shovel moving forward is lower than that of the digging shovel moving backward, such that the digging stability is favorably improved. Digging in the vibrating mode not only shovels the roots of welsh onions, but also reduces resistance of the digging shovel in the digging process, such that a consumption of power is reduced. In the present embodiment, the first eccentric wheel 305 is connected with an output shaft of a hydraulic motor and is powered by the hydraulic motor to rotate, and therefore, a vibrating frequency of the digging shovel may be changed by adjusting a rotating speed of the hydraulic motor.

The ground breaking mechanism is located at the front end of the horizontal bracket 302. As shown in the Fig. 5, the ground breaking mechanism comprises a second hydraulic motor 312, a rotating disc 311 and ground breaking rollers 310. A third rotating shaft is fixed to a bottom of the rotating disc 311, an output shaft of the second hydraulic motor 312 is in transmission connection to a bottom of the third rotating shaft of the rotating disc 311 through a bevel gear, a plurality of ground breaking rollers 310 are fixed to a circumferential outer side wall of the rotating disc 311 at intervals, and the ground breaking rollers 310 in the present embodiment are rubber strips. Transmitted by the bevel gear, rotation output by the second hydraulic motor in a vertical direction is turned into rotation in a horizontal direction to drive the rotating disc 311 to rotate. In a process that the ground breaking rollers 310 rotate along with the rotating disc 311, the ground breaking rollers act to soil at the roots of the welsh onions to break ground at the roots of the welsh onions so as to prevent much soil from blocking the roots of the welsh onions, thereby reducing the resistance of the digging shovel in the advancing process.

The digging shovel 303 is provided with soil leakage grids. After the digging shovel digs the roots of the welsh onions, as a result of much soil at the roots of the welsh onions, soil at the roots can fall off along the soil leakage grids of the digging shovel.

The soil shaking and conveying apparatus 4 comprises a soil shaking mechanism and a conveying mechanism, wherein the soil shaking mechanism is located behind the digging shovel, the soil shaking mechanism is connected with the digging mechanism, and the conveying mechanism is located above the soil shaking mechanism. As shown in the Fig. 6, the soil shaking mechanism comprises a third hydraulic motor 401, a second rotating shaft 402, a shaft sleeve 404, a connecting column 406 and soil shaking rollers 409. One end of the second rotating shaft 402 is connected with an output end of the third hydraulic motor 401, the third hydraulic motor 401 drives the second rotating shaft 402 to rotate during work, an other end of the second rotating shaft 402 is sleeved with the shaft sleeve 404 externally, and the second rotating shaft 402 is in key joint with the shaft sleeve 404. In the present embodiment, a key 403 is arranged on an outer surface of the second rotating shaft 402, a key groove is formed in an inner wall of the shaft sleeve 404, correspondingly, the key 403 is arranged in the key groove, and the soil shaking mechanism can moves front and back along with the digging mechanism by arranging the key and the key groove. The second rotating shaft 402 drives the shaft sleeve 404 to rotate while rotating and an axial relative slippage can be further generated between the second rotating shaft 402 and the shaft sleeve 404. One end of the shaft sleeve 404 is provided with an opening for the convenience of connection with the second rotating shaft 402. An other end of the shaft sleeve 404 is connected with a second eccentric wheel 405, a top of the connecting column 406 is fixedly connected with the second eccentric wheel 405, and a bottom of the connecting column 406 is connected with a second connecting rod407. A back end of the second connecting rod 407 is hinged with the connecting column 406, a front end of the second connecting rod 407 is fixedly connected with a third connecting rod 408, and two ends of the third connecting rod 408 is respectively hinged with the first connecting rod 304 on each side. The third connecting rod 408 is axially provided with a plurality of soil shaking rollers 409 at intervals, and front ends of the soil shaking rollers 409 are fixedly connected with the third connecting rod 408.

As the soil shaking mechanism is connected with the digging mechanism, in the vibrating and digging process, the digging shovel will drive the soil shaking mechanism to vibrate front and back. In a process of the third connecting rod 408, the second connecting rod 407 and the connecting column 406 moving in a reciprocating manner front and back along with the digging shovel, the shaft sleeve 404 is driven to slide front and back along the key 403 of the second rotating shaft 402. In the moving process of the shaft sleeve 404 in a reciprocating manner front and back, rotation of the second rotating shaft 402 is not affected, i.e., in the rotating process of the second rotating shaft 402, the shaft sleeve 404 rotates along with the second rotating shaft 402 by means of key connection between the shaft sleeve 404 and the second rotating shaft 402. In the rotating process of the shaft sleeve 404, the third connecting rod 408 is driven to rotate by means of the eccentric wheel 405 and the connecting column 406, such that the soil shaking rollers 409 fixed to the third connecting rod 408 swing up and down, and thereby, the soil shaking rollers 409 vibrate up and down. Therefore, the soil shaking rollers 409 further can vibrate up and down while vibrating front and back along with the digging shovel. After the welsh onions are dug from soil by the digging mechanism, much soil exists on the roots. Soil at the roots of the welsh onions are shaken off first by front and back vibration and up and down vibration of the soil shaking mechanism, and then the welsh onions is then conveyed backward via the conveying mechanism.

As shown in the Fig. 7, the conveying mechanism comprises conveyor belts and a conveyor belt rack, the conveyor belts are arranged on the conveyor belt rack, two conveyor belts are arranged obliquely, front ends of the conveyor belts are lower than back ends, rotating directions of the two conveyor belts are reverse, the front ends of the conveyor belts are located above the soil shaking mechanism, stem portions of the welsh onions dug by the digging shovel are clamped by the two conveyor belts and are conveyed by the conveyor belts from a front end of the conveying mechanism to the paving and collecting apparatus 5 behind the conveying mechanism. A back end of the conveyor belt rack is provided with a front-back position adjusting rod 410, a top end of the front-back position adjusting rod 410 is hinged with the back end of the conveyor belt rack, a bottom end of the front-back position adjusting rod 410 is connected with a slide block 411 fixed to the rack 1, the slide block 411 is provided with a fifth sliding chute parallel to the direction of the conveyor belts, the bottom end of the front-back position adjusting rod 410 is provided with a protrusion correspondingly, the protrusion is arranged in the fifth sliding chute and is capable of sliding in the fifth sliding chute. In a process that the protrusion drives the front-back position adjusting rod 410 to slide along the slide block 411, the protrusion drives the whole conveying mechanism to move front and back, thereby achieving adjustment of the conveying mechanism in front and back positions. A height adjusting rod 412 is fixed to a middle portion of the conveyor belt rack, a top of the height adjusting rod 412 is connected with a top rack 101 of the rack 1 via a hydraulic rod 413. In a stretching process of the hydraulic rod 413, the conveyor belt rack swings along the top of the height adjusting rod 411, such that upper and lower positions of a front end of the conveyor belt rack are adjusted. The upper and lower and front and back positions of the conveyor belts are adjusted, such that the conveying mechanism can clamp welsh onions of various varieties at different heights.

The paving and collecting apparatus is located behind the conveying mechanism and comprises a paving mechanism and a collecting mechanism, the paving mechanism is located behind the conveying mechanism and the collecting mechanism is located behind the paving mechanism. As shown in the Fig. 8 and Fig. 9, the paving mechanism comprises two rubber discs 503 and clamping sheets 505, the two rubber discs 503 are symmetrically fixed to a rubber disc shaft 506 and the rubber disc shaft 506 drives the rubber discs 503 to rotate in a rotating process. The clamping sheets 505 are arranged in middle portions of outer sides of the two rubber discs 503 respectively, the clamping sheets 505 are fixed to the rack, and the clamping sheets 505 apply inward clamping forces to the middle portions of the rubber discs. Y type connectors 507 are arranged on a front side and a back side between the two rubber discs 503 respectively, i.e., the Y type connectors 507 are arranged between the two rubber discs below the conveying mechanism and between the two rubber discs facing the collecting mechanism. Two ends of a top of each Y type connector are attached to inner walls of the two rubber discs respectively, a bottom of the Y type connector is fixedly connected with the rack, and the Y type connectors applies outward supporting forces to the two rubber discs 503. Distances between the two rubber discs are not equal, and a distance between the two rubber discs attached to the Y type connector is larger than a distance between other parts. In the rotating process of the rubber discs 503, when the rubber discs rotate to a position between the two clamping sheets 505, the clamping forces applied by the clamping sheets 505 can play a role of clamping an object between the two rubber discs 503 due to the distance between the two rubber discs 503 is lessened. When the rubber discs rotate to a position of the Y type connectors 507, the distance between the two rubber discs 503 is increased under the action of outward supporting forces of the Y type connectors 507, and at the moment, the object between the two rubber discs 503 can be released.

The welsh onions conveyed to an upper side of the paving mechanism by the conveying mechanism fall between the two rubber discs 503 below the conveyor belt, first. As the Y type connectors 507 are arranged between the two rubber discs 503 below the conveyor belt, the Y type connectors 507 play a role of outward supporting a position between the two rubber discs 503 below the conveyor belt, such that the welsh onions falling from the conveyor belt fall off continuously and are extruded between the two rubber discs 503.

The rubber disc shaft 506 drives the rubber discs 503 to rotate and the rubber discs and the conveyor belt are same in linear speed at an intersection. After falling from the conveyor belt, the roots of the welsh onions face downward, fall between the two rubber discs 503 first and rotate continuously along with the rubber discs 503. Under the action of the clamping forces of the clamping sheets 505, the two rubber discs 503 clamp onion bulbs and the roots of the welsh onions so as to drive the welsh onions to rotate along with the rubber discs. When the welsh onions rotate along with the rubber discs to face the collecting mechanism, the distance between the two rubber discs 503 is increased under the supporting action of the Y type connectors 507 and the clamping forces applied to the welsh onions disappear at the moment. At the time, the welsh onions fall down between the two rubber discs 503 and fall onto the collecting mechanism. At the time, the roots of the welsh onions face forward and the onion leaves face backward. The welsh onions conveyed by the conveying mechanism are in a vertical direction. In the paving process, the rubber discs 503 rotate to drive the welsh onions to rotate to a horizontal direction to pave the welsh onions horizontally.

In order to pave the welsh onions of different varieties, upper and lower positions and front and back positions of the paving mechanism are adjustable. End portions of the rubber disc shaft 506 are respectively connected with a rubber disc bracket 501. The rubber disc bracket 501 is provided with a sixth sliding chute in the horizontal direction, and each end portion of the rubber disc shaft 506 is arranged in the sixth sliding chute and is capable of moving front and back along the sixth sliding chute. In a process that the rubber disc shaft 506 drives the rubber disc 503 to move front and back, front and back positions of the rubber disc 503 are adjusted. The rubber disc bracket 501 is slidably connected with a height adjusting bracket 502, the height adjusting bracket 502 is fixed to the rack, the rubber disc bracket 501 is provided with a seventh sliding chute in a vertical direction, and a fourth bolt penetrates through the seventh sliding chute and is connected with the height adjusting bracket 502. The fourth bolt is screwed, such that the rubber disc bracket 501 and the height adjusting bracket 502 are fixedly connected; when the fourth bolt is loosened, and a height of the rubber disc bracket 501 is adjusted, such that the upper and lower positions of the rubber disc mechanism are adjustable. When adjusted to a proper height, the rubber disc bracket 501 and the height adjusting bracket 502 are fixedly connected again via the fourth bolt. By adjusting the positions of the rubber discs, the applicability of the paving mechanism is improved.

As shown in the Fig. 10 and Fig. 11, the collecting mechanism comprises a side conveying belt 508 and a collecting box located below one side of the side conveying belt 508. The side conveying belt 508 is located on a rear lower side of the paving mechanism, the side conveying belt 508 is provided with a stacking inclined plate 509 and a stacking baffle plate 510 along a tail end of a moving direction of the side conveying belt, the stacking inclined plate 509 is arranged along a direction of the side conveying belt, the stacking baffle plate 510 is arranged perpendicular to the direction of the side conveying belt, and the stacking baffle plate 510 is located above the stacking inclined plate 509. A certain included angle is formed between the stacking inclined plate 509 and the horizontal direction, and an end of the stacking inclined plate facing a tail end of the side conveying belt is lower than an other end of the stacking inclined plate. By arranging the stacking inclined plate, on the one hand, when the welsh onions are conveyed to the tail end of the side conveying belt, the welsh onions are prevented from being damaged as generate friction generated between the welsh onions and the rotating side conveying belt is avoided in the process of stacking in the tail end of the side conveying belt. On the other hand, as the stacking inclined plate 509 is arranged obliquely, when the welsh onions are conveyed to the stacking inclined plate 509, the welsh onions slide to the stacking baffle plate 510 along the stacking inclined plate under the action of gravity and inertia, and thus, the welsh onions are gathered at the stacking baffle plate 510.

Side surfaces of the tail end of the side conveying belt are provided with stacking side plates 511, the stacking side plates 511 are fixedly connected with the side conveying belt, and the stacking baffle plate 510 is connected with each stacking side plate 511 through an incomplete gear intermittent mechanism. The incomplete gear intermittent mechanism comprises an incomplete gear 512 and a gear 513, wherein the incomplete gear 512 is hinged with a top of the stacking side plate 511, tops of the stacking side plate 511 and the stacking baffle plate 510 are connected through a fourth rotating shaft, the gear 513 is fixed to one end of the fourth rotating shaft, and the gear 513 is engaged with the incomplete gear 512. In the rotating process, the incomplete gear 512 drives the gear 513 to rotate at a certain angle so as to drive the stacking baffle plate 510 to rotate at a certain angle. When the welsh onions gathered to the tail end of the side conveying belt reach a certain quantity, the stacked welsh onions fall into the collecting box below directly as the incomplete gear intermittent mechanism controls the baffle plate to open and close, such that the welsh onions are collected in a bundled manner.

A working process of the present application is as follows. During work, the caterpillar band drives the whole machine to advance. In the advancing process of the harvester, the two disc soil separating rakes of the soil separating apparatus separate ridge soil and then the ground breaking mechanism rotates to break ground at the roots of the welsh onions, and then the digging shovel digs the roots of the welsh onions. The welsh onions dug from soil have a lot of mud, soil at the roots of the welsh onions are shaken off by front and back vibration and up and down vibration of the soil shaking mechanism, and then the welsh onions are conveyed to the rubber discs behind as the necks of the welsh onions are conveyed and clamped by the conveying mechanism. The welsh onions in the vertical direction are paved to the side conveying belt horizontally as the rubber discs rotate, the side conveying belt conveys and gathers the welsh onions to the tail end of the side conveying belt, and the stacked welsh onions fall into the collecting box through the incomplete gear intermittent mechanism, thereby finishing harvesting of the welsh onions.

The welsh onion harvester provided by the present application is described in detail above. Particular examples are used herein to explain the principle and embodiments of the present application, and the above description of the embodiments is only used to help understanding the methods and core concept of the present application. It should be noted that those skilled in the art also can make several improvements and modifications on the present application without departing from the principle of the present application, and these improvements and modifications also come within the protection scope of claims of the present application. By explaining the disclosed embodiments, those skilled in the art can implement or use the present application. Various modifications of these embodiments will be obvious for those skilled in the art. A general principle defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to these embodiment disclosed herein but is in accordance with the widest scope consistent with principle and novel features of the disclosure.

Claims (8)

CLAIMS:

1. A welsh onion combine harvester, comprising a rack, and further comprising a soil separating apparatus, a digging apparatus, a soil shaking and conveying apparatus and a paving and collecting apparatus; the soil separating apparatus, the digging apparatus, the soil shaking and conveying apparatus and the paving and collecting apparatus are arranged on the rack in sequence from front to back;

the soil separating apparatus comprises two disc soil separating rakes located on a same horizontal plane and first hydraulic motors, the two disc soil separating rakes are located at a bottom of the rack and are arranged symmetrically, a middle portion of each disc soil separating rake is provided with a central rotating shaft, the central rotating shaft is hinged to a bottom of a supporting rod, a top of the supporting rod is fixedly connected with a first rotating shaft, each first hydraulic motor is fixed to a top end of the first rotating shaft, the first hydraulic motor is in transmission connection with the central rotating shaft of the disc soil separating rake through a chain, a sliding plate is fixed to an upper end of the first rotating shaft, the sliding plate is slidably connected with a fixed plate behind the sliding plate, the fixed plate is fixedly connected with a rotating flange behind the fixed plate, and the rotating flange is connected with a front end of the rack;

the digging apparatus comprises two digging brackets arranged in parallel, a digging shovel, a slider-crank mechanism and a ground breaking mechanism, each of the digging brackets is L-shaped and comprises a vertical bracket and a horizontal bracket connected perpendicularly, a front end of the horizontal bracket is provided with a fourth sliding chute, a back end of the horizontal bracket is fixedly connected with a bottom of the vertical bracket, a top of the vertical bracket is fixedly connected with the rack, the digging shovel is located between the two digging brackets, a first sliding rod and a second sliding rod are fixed to each of two outer side walls of the digging shovel, wherein, the first sliding rod is located in a middle portion of each side wall, the second sliding rod is located on a back portion of each side wall, end portions of both the first sliding rod and the second sliding rod are arranged in the fourth sliding chute and are capable of sliding in the fourth sliding chute, and the second sliding rod is connected with the vertical bracket through the slider-crank mechanism; the ground breaking mechanism is located at the front end of the horizontal bracket and comprises a second hydraulic motor, a rotating disc and ground breaking rollers, a third rotating shaft is fixed to a bottom of the rotating disc, an output shaft of the second hydraulic motor is in transmission connection with a bottom of the third rotating shaft of the rotating disc through a bevel gear, and a plurality of ground breaking rollers are fixed to a circumferential outer side wall of the rotating disc at intervals; and the soil shaking and conveying apparatus comprises a soil shaking mechanism and a conveying mechanism, the soil shaking mechanism is located behind the digging shovel and is connected with the digging mechanism, the conveying mechanism is located above the soil shaking mechanism; the soil shaking mechanism comprises a third hydraulic motor, a second rotating shaft, a shaft sleeve, a connecting column and soil shaking rollers, one end of the second rotating shaft is connected with an output end of the third hydraulic motor, an other end of the second rotating shaft is sleeved with the shaft sleeve externally, the second rotating shaft is in key joint with the shaft sleeve, one end of the shaft sleeve is provided with an opening, an other end of the shaft sleeve is connected with a second eccentric wheel, a top of the connecting column is fixedly connected with the second eccentric wheel, a bottom of the connecting column is connected with a second connecting rod, a back end of the second connecting rod is hinged with the connecting column, a front end of the second connecting rod is fixedly connected with a third connecting rod, two ends of the third connecting rod are respectively hinged with a first connecting rod on each side, the third connecting rod is axially provided with a plurality of soil shaking rollers at intervals, and front ends of the soil shaking rollers are fixedly connected with the third connecting rod.

2. The welsh onion combine harvester according to claim 1, wherein, two rotating plates are axially fixed to the first rotating shaft in an axial direction of the first rotating shaft at an interval, the two rotating plates are located above and below the sliding plate respectively, each rotating plate is provided with an arc-shaped first sliding chute, and a first bolt penetrates through the first sliding chute in each rotating plate and is fixedly connected with the sliding plate; the sliding plate is in sliding connection with the fixed plate, the sliding plate is provided with a second sliding chute, a front side surface of the fixed plate is provided with a sliding protrusion correspondingly, the sliding protrusion is arranged in the second sliding chute and slides along the second sliding chute, and a second bolt penetrates through the second sliding chute and is fixedly connected with the fixed plate; the rotating flange is rotatably connected with the front end of the rack, the rotating flange is provided with an arc-shaped third sliding chute, and a third bolt penetrates through the third sliding chute and is fixedly connected with the front end of the rack.

3. The welsh onion combine harvester according to claim 1, wherein, a front portion of the fourth sliding chute is provided with a fixed hole, a stop block is placed in the fixed hole, and the stop block is located behind an end portion of the first sliding rod.

4. The welsh onion combine harvester according to claim 1, wherein, the slider-crank mechanism comprises a first eccentric wheel and the first connecting rod, the first eccentric wheel is hinged with the vertical bracket, an eccentric rod of the first eccentric wheel is connected with one end of the first connecting rod, and an other end of the first connecting rod is hinged with the second sliding rod.

5. The welsh onion combine harvester according to claim 1, wherein, the conveying mechanism comprises conveyor belts and a conveyor belt rack, the conveyor belts are arranged on the conveyor belt rack, two conveyor belts are arranged obliquely, front ends of the two conveyor belts are lower than back ends of the two conveyor belts, rotating directions of the two conveyor belts are reverse, the front ends of the two conveyor belts are located above the soil shaking mechanism, a back end of the conveyor belt rack is provided with a front-back position adjusting rod, a top end of the front-back position adjusting rod is hinged with the back end of the conveyor belt rack, a bottom end of the front-back position adjusting rod is connected with a slide block fixed to the rack, the slide block is provided with a fifth sliding chute parallel to a direction of the conveyor belts, the bottom end of the front-back position adjusting rod is provided with a protrusion correspondingly, the protrusion is arranged in the fifth sliding chute and slides in the fifth sliding chute; a height adjusting rod is fixed to a middle portion of the conveyor belt rack, and a top of the height adjusting rod is connected with a top rack of the rack via a hydraulic rod.

6. The welsh onion combine harvester according to claim 1, wherein, the paving and collecting apparatus comprises a paving mechanism and a collecting mechanism, the paving mechanism is located behind the conveying mechanism, the collecting mechanism is located behind the paving mechanism, the paving mechanism comprises two rubber discs, clamping sheets and Y-type connectors, the two rubber discs are symmetrically fixed to a rubber disc shaft, middle portions of outer sides of the two rubber discs are provided with the clamping sheets which apply inward clamping forces respectively, the clamping sheets are fixedly connected with the rack, the Y-type connectors which apply outward supporting forces are respectively arranged between the two rubber discs right below the conveying mechanism and between the two rubber discs facing the collecting mechanism, two ends of a top of each Y-type connector are attached to inner walls of the two rubber discs respectively, a bottom of each Y-type connector is fixedly connected with the rack, and end portions of the rubber disc shaft are respectively connected with a rubber disc bracket.

7. The welsh onion combine harvester according to claim 6, wherein, the rubber disc bracket is provided with a sixth sliding chute in a horizontal direction, each end portion of the rubber disc shaft is arranged in the sixth sliding chute and moves front and back in the sixth sliding chute, the rubber disc bracket is slidably connected with a height adjusting bracket, the height adjusting bracket is fixed to the rack, the rubber disc bracket is provided with a seventh sliding chute in a vertical direction, and a fourth bolt penetrates through the seventh sliding chute and is connected with the height adjusting bracket.

8. The welsh onion combine harvester according to claim 1, wherein, the collecting mechanism comprises a side conveying belt and a collecting box located behind one side of the side conveying belt; the side conveying belt is located on a rear lower side of the paving mechanism, the side conveying belt is provided with a stacking inclined plate and a stacking baffle plate along a tail end of a moving direction of the side conveying belt, the stacking inclined plate is arranged along a direction of the side conveying belt, the stacking baffle plate is arranged perpendicular to the direction of the side conveying belt, the stacking baffle plate is located above the stacking inclined plate, an included angle is formed between the stacking inclined plate and the horizontal direction, an end of the stacking inclined plate facing a tail end of the side conveying belt is lower than an other end of the stacking inclined plate; side surfaces of the tail end of the side conveying belt are provided with stacking side plates respectively, the stacking side plates are fixedly connected with the side conveying belt, the stacking baffle plate is connected with each stacking side plate through an incomplete gear intermittent mechanism; the incomplete gear intermittent mechanism comprises an incomplete gear and a gear, the incomplete gear is hinged with a top of the stacking side plate, tops of the stacking side plate and the stacking baffle plate are connected through a fourth rotating shaft, the gear is fixed to one end of the fourth rotating shaft, and the gear is engaged with the incomplete gear.