CN109526382B - Wheel-track composite high-ground-clearance ratooning rice harvester - Google Patents

Abstract

The wheel-track composite high-clearance ratooning rice harvester comprises a frame, a working system and a traveling system; the working system comprises a header device, a conveying device, a threshing device, a cleaning device, a granary and a driving platform; the header device is arranged right in front of the frame; in the left-right direction, one side of the frame is provided with a threshing device and a cleaning device, and the other side is provided with a granary; the threshing device, the cleaning device and the granary are arranged at the rear part which is balanced with the header device, and the driving platform is arranged at the front part of the frame; the threshing device adopts a longitudinal axial flow arrangement mode; the conveying device is arranged between the header device and the threshing device; the cleaning device is arranged below the threshing device; the grass chopping device is arranged at a grass discharge port of the threshing device; the walking system is in a wheel type and crawler type combined form. Belongs to the field of agricultural machinery. The steering device has the characteristics of flexible steering, good working performance, low rolling, low damage and strong environment adaptability.

Description

Wheel-track composite high-ground-clearance ratooning rice harvester

Technical Field

The invention relates to the field of agricultural machinery, in particular to a ratoon rice harvesting machine.

Background

At present, the cultivation of ratoon rice is being vigorously popularized in the south region of China. The conventional harvest mode of the ratooned rice is generally that a manual harvesting head season is matched with a crawler harvester to harvest the ratooned season, or all the ratooned rice is harvested by the crawler harvester. The problems that exist are: firstly, the cost for manually harvesting rice is sharply increased and is not easy to obtain; secondly, the existing harvester is easy to damage the regenerated rice when harvesting in the first season. Therefore, the popularization of the ratoon rice urgently needs a harvester with low damage degree to crops when harvesting in the first season so as to save the labor cost, reduce the damage rate of the ratoon rice when harvesting and obtain better economic benefit in the ratoon season.

The disadvantages of the existing harvester mainly include: (1) the machine has larger self weight and high rolling compaction rate; at present, most of crawler harvesters on the market are crawler belts with the width of 35-55cm, and the harvesting rolling compaction rate of first season rice is up to more than 40%; (2) the ground clearance is low, and under the condition that the crops are high, the machine body is easy to press the crops and break the stems, so that lodging in a regeneration season is caused, and the damage degree to the crops is large; (3) the straws discharged by the existing harvester after threshing are often large, can not fall to the ground and return to the field, and are easy to accumulate on the surface of the regenerated rice, so that the growth and heading of the regenerated rice in the next step are influenced, even the regenerated rice is rotten, and the regenerated rice is seriously damaged; (4) the harvester needs more times of walking back and forth when harvesting, and the rolling range is enlarged.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention aims to: the existing harvester is creatively improved, and the wheel-track composite high-clearance ratooning rice harvester with small damage degree to crops is provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

A wheel-track composite high-clearance ratooning rice harvester comprises a frame, a working system and a traveling system.

The working system comprises a header device, a conveying device, a threshing device, a cleaning device, a granary and a driving platform; the cleaning device comprises a cleaning component and a grain conveying component for conveying cleaned grains to the granary; the components used in the working system are relatively mature prior art.

The invention optimizes the layout of the working system. The header device is arranged right in front of the frame; in the left-right direction, one side of the upper surface of the rack is provided with a threshing device and a cleaning device, and the other side is provided with a granary; the threshing device, the cleaning device and the granary are arranged at the rear part of the rack balanced with the weight of the header device in the front-rear direction, and the driving platform is arranged at the front part of the rack so that a driver can conveniently observe the front condition; the threshing device adopts a longitudinal axial flow arrangement mode, the longitudinal axial flow is that rice and grain are harvested by the header device, conveyed by the longitudinally-arranged conveying device and fed into the longitudinally-arranged threshing device through the blades, and the tail end of the conveying device is connected with the front end of the threshing device; the conveying device is arranged between the header device and the threshing device, an inlet at the front end of the conveying device is in butt joint with an output lifting port of the header device, and an outlet at the rear end of the conveying device is in butt joint with a feeding port of the threshing device; cleaning assembly of cleaning plant sets up in thresher's below, and the corn conveying assembly sets up between cleaning assembly and granary. The positions of the front end inlet of the conveying device, the rear end inlet of the conveying device, the output lifting port of the header device and the feeding port of the threshing device are all arranged at positions matched with the layout. After adopting this kind of overall arrangement, can change the specification of device in a flexible way, still keep balanced simultaneously to further reform transform the harvester. Such as: when the specification of the wheel-track composite high-ground-clearance ratooning rice harvester is increased, the operation efficiency is improved, the times of back-and-forth walking are reduced, the granary, the threshing device and the cleaning device can be directly increased, the rearrangement is not needed, and the whole machine cannot become large and heavy; the threshing device and the cleaning device are lengthened to increase the threshing and cleaning time and effectively reduce the loss rate.

Preferably, the working system is also provided with a straw smashing device for smashing and returning the threshed straws to the field, and the straw smashing device is arranged at a straw discharging opening of the threshing device. The grass discharge port is arranged at the position matched with the layout. After the structure is adopted, the discharged straws are thin enough to fall into the soil and return to the field fully, so that the growth of the ratoon rice is not influenced.

Preferably, the wheel-track composite high-clearance ratooning rice harvester is also provided with a stabilizing component for stabilizing the conveying device; the header device is horizontally arranged right in front of the rack through the conveying device and the stabilizing assembly; in the left and right ends of the header device, one end is fixedly connected with the conveying device, and the other end is fixedly connected with the stabilizing assembly. After the stabilizing assembly is arranged, the header device can be effectively kept horizontal, so that the stubble height can be controlled. Meanwhile, when the mass or the length of the header device is increased, the header device is not easy to incline under the action of the stabilizing assembly; furthermore, the cutting width of the header device can be increased, so that the number of times of back-and-forth walking of the wheel-track composite high-ground-clearance ratooning rice harvester is reduced, and the rolling compaction rate is reduced.

Preferably, the conveying device is longitudinally installed, and the rear end of the conveying device is connected to the rack in an up-and-down rotating mode; the stabilizing assembly comprises a side rod and a middle connecting rod parallel to the header device; one end of the side lever is connected with a vertical rod fixed on the frame in an up-and-down rotating manner, and the other end of the side lever is fixedly connected with the header device; one end of the middle connecting rod is fixedly connected with the side rod, and the other end of the middle connecting rod is fixedly connected with the conveying device; the middle connecting rod is provided with a hydraulic cylinder, one end of the hydraulic cylinder is hinged on the rack, and the other end of the hydraulic cylinder is hinged with the middle connecting rod; the connecting point of the hydraulic cylinder and the middle connecting rod is the integral gravity center position formed by the stabilizing component, the conveying device and the header device. After the structure is adopted, the height of the header device can be adjusted within the range of 10cm-100cm, and the header device can meet the requirements of harvesting heights of different geographical conditions, different growth times and different varieties.

Preferably, the middle connecting rod comprises a vertical rod and a transverse rod; the three vertical rods are respectively fixed on the side rods, the left side of the conveying assembly and the right side of the conveying assembly; the cross rod is fixedly connected with each vertical rod. After adopting this kind of structure, firm subassembly can also be with firm conveyor except can firm header device keeps its balance.

Preferably, the header device has a swath that is greater than the track of the travel assembly by an amount that ensures that the adjacent ratooned rice is not rolled while being harvested. The cutting width is the width for harvesting rice at one time, namely the total length of the cutting table cutter; the wheel track is as follows: and when the walking device walks in a straight line, the distance between the leftmost track and the rightmost track of the walking device on the ground is kept. With this structure, it is possible to prevent the adjacent non-harvested regenerated rice from being crushed during harvesting.

Preferably, the traveling system comprises a front driving axle, a rear driving axle, a pair of triangular crawler traveling mechanisms and a pair of narrow-wheel traveling mechanisms capable of steering actively; the narrow-wheel traveling mechanisms are symmetrically arranged on two sides of the front part of the frame through a front drive axle, and the triangular crawler traveling mechanisms are symmetrically arranged on two sides of the rear part of the frame through a rear drive axle. After the wheel type and crawler type walking combination mode is adopted, the narrow wheel walking mechanism realizes dynamic steering under the action of the steering hydraulic cylinder, the rotating speeds on the left side and the right side of the differential mechanism are redistributed in proportion, the triangular crawler walking mechanism follows the narrow wheel walking mechanism, the narrow wheel walking mechanism is different from a traditional full-crawler type unilateral braking steering mode, the rotating speeds on the left side and the right side can be redistributed according to the differential mechanism, and the purpose of steering is achieved. This makes the effect of traveling stable, and is little to land field piece structure destruction degree, has still kept the flexibility that wheeled turned to.

Preferably, each group of triangular crawler belt traveling mechanisms comprises a trapezoidal bracket, a main driving wheel, a guide wheel, a lower driven wheel, a traveling bearing wheel and a crawler belt; the main driving wheel is arranged at the upper end of the trapezoidal bracket, and the walking bearing wheel is arranged below the trapezoidal bracket; the lower end of the trapezoidal bracket is provided with a beam; the guide wheel is arranged at the front end of the cross beam; the lower driven wheel is arranged at the rear end of the cross beam; the main driving wheel, the guide wheel, the lower driven wheel and the walking bearing wheel are wound by the crawler belt in an enclosing manner. After adopting this kind of structure, stable in structure walks steadily.

Preferably, the walking system adopts a high-ground-clearance chassis design; wherein, the front drive axle comprises a vertical section with heightening function; the rear drive axle comprises a rear drive axle half shaft and a drive axle shell provided with a mounting arm; the upper part of the trapezoidal bracket of the triangular crawler traveling mechanism is provided with an axle connecting plate; the mounting arm is fixedly connected with the axle connecting plate; the main driving wheel is fixedly connected with the rear drive axle half shaft. After the structure is adopted, the chassis of the wheel-track composite high-ground-clearance ratooning rice is higher, so that the situation that the ratooning rice is damaged due to the fact that the rice body presses the ratooning rice when the rice harvester works is avoided, and meanwhile, the situation that the work is influenced by the overhigh ratooning rice is also avoided.

Preferably, the front end of the cross beam is provided with a guide wheel chute, and the rear end of the cross beam is provided with a lower driven wheel chute; the guide wheel is slidably mounted in the guide wheel chute through the guide wheel slide block, and the lower driven wheel is slidably mounted in the lower driven wheel chute through the lower driven wheel slide block; the outer sides of the guide wheel sliding groove and the lower driven wheel sliding groove are both provided with lug plates with threaded through holes, and the tail end of the screw is forwards propped against a stressed part protruding outwards of the guide wheel sliding block or backwards propped against a stressed part protruding outwards of the lower driven wheel sliding block; the main driving wheel, the guide wheel, the lower driven wheel and the walking bearing wheel are wound by the crawler belt in a surrounding mode and are tightly pressed from the outside to fix the guide wheel and the lower driven wheel. After adopting this kind of structure, the assembly is easy, and after having loosened, convenient tightening.

Preferably, the guide wheels are provided with a forward angle inclined upward and forward. After adopting this kind of structure, can strengthen the obstacle-surmounting ability of machine.

Preferably, a balance bar fixing plate extending downwards is arranged in the middle of the cross beam, and floating block fixing plates extending downwards are arranged at two ends of the cross beam; the floating blocks are rotatably arranged on the floating block fixing plate, and a pair of walking bearing wheels is arranged at two ends of each floating block; and the balance rod for blocking the walking bearing wheel below to run upwards is fixedly arranged on the balance rod fixing plate. By adopting the floating connection mode, the floating chassis frame adapts to uneven bottom surfaces, the trafficability is enhanced, the running of the machine is more stable, and the chassis is convenient to lift.

Preferably, the narrow wheel running mechanism adopts a narrow high-pattern paddy field wheel, and the width of the high-pattern paddy field wheel ranges from 10cm to 15 cm; the surfaces of a driving wheel and a lower driven wheel of the triangular crawler traveling mechanism are both provided with grinding teeth, and the grinding teeth are embedded with a narrow-design crawler with a circle of holes; the width of the crawler belt ranges from 15cm to 25 cm. After the structure is adopted, the fertilizer can be used for dry farmland and can also be used for paddy field; the narrow design can reduce the rolling compaction rate, and the rodent makes the track even for the narrow design, also can be difficult to drop.

As a preferred choice, the granary is a self-discharging granary. After adopting this kind of structure, be favorable to using manpower sparingly.

In summary, the present invention has the following advantages: the high-speed road roller has the characteristics of high ground clearance, stable running, flexible steering and low rolling rate; the harvester can be used for harvesting ratooning rice and conventional rice, and has low damage rate to fields and crops; can work normally in both dry land and paddy field.

Drawings

Fig. 1 is a schematic structural view of a whole wheel-track combined high-clearance ratoon rice harvester.

Fig. 2 is a schematic view of the whole structure of the wheel-track composite high-clearance ratooning rice harvester from other angles.

Fig. 3 is a schematic structural diagram of a helical impeller of the threshing device.

Fig. 4 is a schematic view of the connection of the front wheels to the front drive axle.

Fig. 5 is a schematic structural view of the triangular crawler traveling system.

Fig. 6 is a cross-sectional view of the main drive wheel portion.

Fig. 7 is an exploded view of the main drive wheel portion.

FIG. 8 is a schematic view of the design of a ladder support.

FIG. 9 is a schematic view of a triangular track tensioning adjustment assembly.

Shown in the figure:

1-header device, 2-stabilizing component, 3-conveying device, 4-cleaning device, 5-threshing device, 6-narrow wheel travelling mechanism, 7-triangular crawler travelling mechanism, 8-frame, 9-driving platform, 10-granary, 11-grass smashing device, 12-helical impeller, 13-roller, 14-front driving axle, 15-high pattern paddy wheel, 16-main driving wheel, 17-lower driven wheel, 18-guide wheel, 19-travelling bearing wheel, 20-trapezoidal bracket, 21-crawler, 22-rear driving half shaft, 23-rear driving axle shell, 24-first bearing, 25-main driving wheel bearing seat, 26-bearing end cover, 27-second bearing and 28-vertical supporting rod, 29-inclined supporting rod, 30-bearing seat connecting plate, 31-axle connecting plate, 32-cross beam, 33-balance rod fixing plate, 34-floating block fixing plate, 35-guide wheel sliding groove, 36-lower driven wheel sliding groove, 37-balance rod, 38-floating block, 39-guide wheel sliding block and 40-lower driven wheel sliding block.

Detailed Description

The present invention will be described in further detail with reference to specific embodiments.

A wheel-track composite high-clearance ratooning rice harvester comprises a frame, a working system and a traveling system.

(1) Working system

The working system comprises a header device, a conveying device, a threshing device, a cleaning device, a grass smashing device, a granary and a driving platform. The granary is a self-discharging granary. The header device, the conveying device, the threshing device, the cleaning device, the grass smashing device and the grain self-discharging device in the embodiment are all existing mature devices. The invention mainly makes creative improvement on the layout of the machine frame in this part.

The header device comprises a cutter, a reel and a spiral finger conveyer; rice is firstly straightened by a reel, the stem thereof is cut off by a cutter and then is sent to the front end inlet of the conveying device by a spiral finger-picking conveyor; the reel adopts an eccentric structure, and the performance of harvesting lodging crops is good; the left part of the header device is provided with an output lifting port which is in butt joint with the conveying device; the cutting width of the cutting table device is 2150 mm.

The conveying device adopts rake teeth to lift and convey.

The threshing device comprises a threshing cylinder, a concave sieve, a spiral guide plate and a housing; the front end of the threshing device is provided with a feeding port which is butted with the conveying device, and the feeding port is provided with a helical impeller with an automatic feeding function; the rear end is provided with a grass discharge port. The diameter of the threshing cylinder is 440mm, and the length of the threshing cylinder is 1430 mm. When the threshing machine works, the cut rice and the grass enter the threshing device and are beaten and rubbed by the threshing cylinder and the concave plate sieve; the threshed objects enter a cleaning device for cleaning through a grid-shaped concave plate sieve; the spiral guide plate is installed on the top of the casing to guide the crop to move axially along the threshing cylinder at proper speed.

The cleaning device adopts a fan-sieve type cleaning device, which comprises a shaking plate for conveying the mixture, a sieve, a fan, a residue conveying auger and a grain conveying component; the grain conveying component is a grain conveying auger; the rotating speed of the fan is set to 2000 r/min. The structure layout is simple, and the fan works together with the sieve, so that the effect of low impurity rate can be achieved. During operation, the sieve and the shaking plate vibrate continuously to send the mixture to the sieve plate of the sieve, light impurities are separated out by wind power, heavier rice ears, straws, residual ears and the like are left on the sieve plate and move under the action of vibration, grains fall into the grain conveying auger from the sieve holes in the moving process and are conveyed to the grain bin, long straws are discharged at the rear of the sieve, and the residual ears fall into the impurity conveying auger transmission mechanism at the tail of the sieve and are conveyed to the threshing device for secondary threshing.

The self-unloading grain bin comprises a grain bin shell, a longitudinal conveying auger, a shaking plate, a transverse conveying auger and a hydraulic motor; the power part adopts a hydraulic transmission mode. The hydraulic motor drives the transverse conveying auger and the longitudinal conveying auger to push grains to move to the outside of the granary, and a shaking plate is arranged to vibrate to ensure the fluidity of the grains. The volume of the self-discharging granary is 500kg-600 kg.

The straw smashing device comprises a plurality of groups of rotary cutters and fixed cutters, is arranged at the straw discharging port of the threshing device and is used for smashing straws and returning the straws to the field. The rotating speed of the rotary cutter is set to 2500 r/min.

In the layout, the header device is arranged right ahead the frame. The threshing device and the cleaning device have larger volume and weight ratio and are arranged at the position close to the back of the frame to balance the weight of the header device, so that the whole gravity center of the machine is stable. The conveying device is arranged between the header device and the threshing device; one end of the conveying device is butted with an output lifting port at the left end of the header device, the other end of the conveying device is butted with a feeding port at the front end of the threshing device, and the straw with grains collected by the header device is conveyed to the threshing device for threshing. The threshing device is arranged at the left rear position of the rack in a longitudinal axial flow mode, the cleaning device is arranged below the threshing device, and the self-discharging grain barn is arranged at the right rear position of the rack for keeping the left and right gravity center balance. The driver's cab is arranged at the front part of the frame, so that the driver can clearly see the conditions of crops and fields.

Wherein, the header device passes through conveyor and the assembly horizontal installation that stabilizes in the dead ahead of frame, and the level that the header device was do benefit to keep to stabilizing the assembly is provided with. The height of the header device can be adjusted within the range of 10cm-100 cm.

The conveying device is longitudinally installed, the rear end of the conveying device is connected to the rack in an up-and-down rotating mode, and the front end of the conveying device is fixedly connected with the left portion of the header device; the stabilizing assembly comprises a side rod and a middle connecting rod parallel to the header device; one end of the side lever is connected with a vertical rod fixed on the frame in an up-and-down rotating manner, and the other end of the side lever is fixedly connected with the right end of the header device. One end of the middle connecting rod is fixedly connected with the side rod, and the other end of the middle connecting rod is fixedly connected with the conveying device.

A hydraulic cylinder for adjusting the height of the header device is arranged on the middle connecting rod, one end of the hydraulic cylinder is hinged on the rack, and the other end of the hydraulic cylinder is hinged with the middle connecting rod; the connecting point of the hydraulic cylinder and the middle connecting rod is the integral gravity center position formed by the stabilizing component, the conveying device and the header device.

The middle connecting rod comprises a vertical rod and a transverse rod; the vertical rods are respectively fixed on the side rods, the left side of the conveying assembly and the right side of the conveying assembly; the cross rod is simultaneously fixedly connected with each vertical rod to connect each vertical rod.

(2) Walking system

A pair of narrow wheel traveling mechanisms which are bilaterally symmetrical are arranged on a traveling system at the front part of the frame through a front drive axle, and the traveling system adopts a high ground clearance chassis design, and the ground clearance is about 80 cm.

The walking system is in a wheel type and crawler type walking combined form and is arranged below the rack; the traveling system comprises a front drive axle, a rear drive axle, a narrow-wheel traveling mechanism and a triangular crawler traveling mechanism.

The front drive axle is a front drive axle with a vertical section for lifting the chassis.

A pair of bilaterally symmetrical triangular crawler traveling mechanisms is installed on two sides of the rear portion of the rack through a rear drive axle.

The narrow wheel running gear includes: a pair of high-pattern paddy field wheels; the high pattern paddy field wheel is designed in a narrow mode, and the wheel width in the embodiment is 12 cm; the high-pattern paddy field wheel is arranged on a front drive axle half shaft of a front drive axle through a screw flange plate; the narrow-wheel walking mechanism can steer under the power of the steering hydraulic cylinder.

The triangular crawler belt walking mechanism comprises: the main driving wheel, the guide wheel, the lower driven wheel, the walking bearing wheel, the trapezoidal support and the crawler.

The trapezoidal support comprises a vertical supporting rod in the middle longitudinal direction, oblique supporting rods in two symmetrical sides, a bearing seat connecting plate at the upper end, an axle connecting plate at the upper part and a cross beam at the lower end, and the trapezoidal support with a symmetrical structure is built.

The main driving wheel is arranged at the upper end of the trapezoid support, the walking bearing wheel is arranged at the lower end of the trapezoid support, the guide wheel is arranged at the front end of a crossbeam of the trapezoid support, and the lower driven wheel is arranged at the rear end of the crossbeam of the trapezoid support; the main driving wheel, the guide wheel, the lower driven wheel and the walking bearing wheel are surrounded by the crawler belt.

The main driving wheel is arranged on a bearing seat connecting plate at the upper end of the trapezoid support through a main driving wheel bearing seat, the main driving wheel bearing seat is fixed on the bearing seat connecting plate, and a wheel shaft of the main driving wheel is arranged on a main driving wheel bearing seat. The outer edge of the main driving wheel is provided with a tooth.

The guide wheel and the lower driven wheel are respectively arranged at the front end and the rear end of the cross beam through the tensioning adjusting component.

The tension adjustment assembly includes: a guide wheel slide block and a lower driven wheel slide block; correspondingly, the front end and the rear end of the cross beam are respectively provided with a guide wheel sliding groove and a lower driven wheel sliding groove.

The left side and the right side of the front part of the guide wheel slide block are provided with symmetrical mounting columns, and the guide wheels are sleeved on the mounting columns and symmetrically mounted at the front part of the guide wheel slide block; the left side and the right side of the middle of the guide wheel slide block are symmetrically provided with baffle plates which are positioned behind the guide wheel, so that the baffle plates do not influence the rotation of the guide wheel. The rear part of the guide wheel slide block is inserted into the guide wheel slide groove and forms a front and back linear motion pair.

The rear end of the lower driven wheel sliding block is provided with a pair of vertical clamping plates, the tail ends of the clamping plates are provided with mounting openings, and the lower driven wheel is embedded into the mounting openings and is mounted between the two clamping plates. The front part of the lower driven wheel slide block is inserted into the lower driven wheel slide groove and forms a front-back linear motion pair.

The outer sides of the guide wheel sliding groove and the lower driven wheel sliding groove are provided with lug plates with threaded through holes. The screw passes through the threaded through hole, and the tail end of the screw abuts against the baffle on the guide wheel slide block or the rear end face of the clamping plate of the lower driven wheel slide block. The screw is rotated to control the length pushed out by the screw, so that the tensioning of the crawler belt can be controlled. Correspondingly, the guide wheels and the lower driven wheels are pressed by the crawler belt from the outside, so that the installation of the guide wheels and the lower driven wheels is stabilized.

The guide wheel is provided with a front rake inclined forwards and upwards, and the guide wheel is of a double-wheel type to enhance the obstacle crossing capability, and the front rake is selected to be 60 degrees in the embodiment. The outer edge of the lower driven wheel is provided with a mesh tooth.

The walking bearing wheel is arranged below the trapezoidal bracket through the floating connecting assembly; the floating connecting component comprises a floating block and a balance rod; correspondingly, a balance bar fixing plate extending downwards is arranged in the middle of the cross beam at the lower end of the trapezoid support, and floating block fixing plates extending downwards are arranged at two ends of the cross beam.

Four pairs of walking bearing wheels are arranged in each triangular crawler walking mechanism; the two floating blocks are respectively and rotatably arranged on the floating block fixing plate, a pair of walking bearing wheels are respectively arranged at the front end and the rear end of each floating block, and the walking bearing wheels are symmetrically arranged at the two sides of the floating blocks; the balancing pole fixed mounting is on the balancing pole fixed plate, the top that the balancing pole is located, and the balancing pole is used for preventing the walking bearing wheel from seriously inclining with the connecting axle coacting of connecting the same pair of walking bearing wheel.

The inner side of the track is provided with a circle of holes and a track, the holes are embedded with the engaging teeth at the corresponding positions of the main driving wheel or the lower driven wheel, and the guide wheel is matched with the walking bearing wheel and the track; so that the crawler belt is not easy to run off. The track is designed to be narrow, and the width of the track is 20cm in the embodiment.

The triangular crawler belt walking mechanism is connected to the rear drive axle through the supporting component. The support assembly comprises a first bearing, a second bearing, an end cover and the main driving wheel bearing seat. The rear drive axle comprises a rear drive axle half shaft and a rear drive axle shell; the outer shell of the rear drive axle is sleeved outside the rear drive axle half shaft; the first bearing is embedded and installed on the inner side of the rear drive axle shell so as to support and connect the rear drive half shaft; the rear drive axle half shaft penetrates through the first bearing and is connected with the main drive wheel; the second bearing is embedded in the main driving wheel bearing seat, and the end cover is connected with the main driving wheel bearing seat through a screw flange plate so as to achieve the fastening effect; one end of a wheel shaft of the main driving wheel is fixedly arranged in the second bearing, and the other end of the wheel shaft is connected with the rear driving half shaft through a screw flange plate. The rear drive axle shell is provided with a mounting arm which is fixedly connected with an axle connecting plate at the upper part of the trapezoid bracket through a bolt.

When the steering wheel is rotated, the narrow wheel traveling mechanism realizes dynamic steering under the action of the steering hydraulic cylinder, and the rotating speeds of the high-pattern paddy field wheels on the left side and the right side of the differential mechanism are redistributed in proportion, so that the flexibility of wheel type steering is reserved. The triangular crawler traveling mechanism follows the narrow wheel traveling mechanism, and the main driving wheels in the triangular crawler traveling mechanisms on the two sides can redistribute the rotating speed according to the differential mechanism, so that the purpose of steering is achieved.

The header device has a cutting width larger than the wheel track of the walking system so as to avoid rolling to adjacent non-harvested regenerated rice when the machine works.

The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.

Claims (10)

1. The wheel-track composite high-clearance ratooning rice harvester comprises a frame, a working system and a traveling system arranged below the frame; the working system comprises a header device, a conveying device, a threshing device, a cleaning device, a granary and a driving platform; the cleaning device comprises a cleaning component and a grain conveying component for conveying cleaned grains to the granary; the method is characterized in that: the header device is arranged right in front of the frame; in the left-right direction, one side of the upper surface of the rack is provided with a threshing device and a cleaning device, and the other side is provided with a granary; the threshing device, the cleaning device and the granary are arranged at the rear part of the upper part of the rack balanced with the header device in the front-back direction, and the driving platform is arranged at the front part of the upper part of the rack; the threshing device adopts a longitudinal axial flow arrangement mode; the conveying device is arranged between the header device and the threshing device, an inlet at the front end of the conveying device is in butt joint with an output lifting port of the header device, and an outlet at the rear end of the conveying device is in butt joint with a feeding port of the threshing device; the cleaning component of the cleaning device is arranged below the threshing device, and the grain conveying component is arranged between the cleaning component and the granary;

The wheel-track composite high-ground-clearance ratoon rice harvester is also provided with a stabilizing component for stabilizing the conveying device; the header device is horizontally arranged right in front of the rack through the conveying device and the stabilizing assembly; one end of the header device is fixedly connected with the conveying device, and the other end of the header device is fixedly connected with the stabilizing assembly;

The conveying device is longitudinally arranged, and the rear end of the conveying device is connected to the rack in an up-and-down rotating manner; the stabilizing assembly comprises a side rod and a middle connecting rod parallel to the header device; one end of the side lever is connected to the rack in an up-and-down rotating manner, and the other end of the side lever is fixedly connected with the header device; one end of the middle connecting rod is fixedly connected with the side rod, and the other end of the middle connecting rod is fixedly connected with the conveying device; the middle connecting rod is provided with a hydraulic cylinder for adjusting the height of the header device, one end of the hydraulic cylinder is hinged on the rack, and the other end of the hydraulic cylinder is hinged with the middle connecting rod; the connecting point of the hydraulic cylinder and the middle connecting rod is the integral gravity center position formed by the stabilizing component, the conveying device and the header device.

2. The wheel-track composite high-clearance ratooning rice harvester of claim 1, wherein: the working system also comprises a straw smashing device for smashing the threshed straws and returning the smashed straws to the field, and the straw smashing device is arranged at a straw discharging opening of the threshing device.

3. The wheel-track composite high-clearance ratooning rice harvester of claim 1, wherein: the cutting width of the header device is larger than the wheel track of the traveling system.

4. The wheel-track composite high-clearance ratooning rice harvester of claim 1, wherein: the traveling system comprises a front drive axle, a rear drive axle, a pair of triangular crawler traveling mechanisms and a pair of narrow-wheel traveling mechanisms capable of steering actively; the narrow-wheel traveling mechanisms are symmetrically arranged on two sides of the front part of the frame through a front drive axle, and the triangular crawler traveling mechanisms are symmetrically arranged on two sides of the rear part of the frame through a rear drive axle.

5. The wheel-track composite high-clearance ratooning rice harvester of claim 4, wherein: each group of the triangular crawler belt traveling mechanisms comprises a trapezoidal bracket, a main driving wheel, a guide wheel, a lower driven wheel, a traveling bearing wheel and a crawler belt; the main driving wheel is arranged at the upper end of the trapezoidal bracket, and the walking bearing wheel is arranged below the trapezoidal bracket; the lower end of the trapezoidal bracket is provided with a beam; the guide wheel is arranged at the front end of the cross beam; the lower driven wheel is arranged at the rear end of the cross beam; the main driving wheel, the guide wheel, the lower driven wheel and the walking bearing wheel are wound by the crawler belt in an enclosing manner.

6. The wheel-track composite high-clearance ratooning rice harvester of claim 5, wherein: the front drive axle comprises a vertical section for lifting the chassis; the rear drive axle comprises a rear drive axle half shaft and a drive axle shell provided with a mounting arm; the upper part of the trapezoid bracket is provided with an axle connecting plate; the mounting arm is fixedly connected with the axle connecting plate; the main driving wheel is fixedly connected with the rear drive axle half shaft.

7. The wheel-track composite high-clearance ratooning rice harvester of claim 5, wherein: the front end of the cross beam is provided with a guide wheel chute, and the rear end of the cross beam is provided with a lower driven wheel chute; the guide wheel is arranged at the front part of the guide wheel slide block, and the rear part of the guide wheel slide block is inserted into and slidably arranged in the guide wheel slide groove; the lower driven wheel is arranged at the rear part of the lower driven wheel slide block, and the front part of the lower driven wheel slide block is inserted into and slidably arranged in the lower driven wheel slide groove; the outer sides of the guide wheel sliding chute and the lower driven wheel sliding chute are provided with lug plates with threaded through holes, and screws penetrate through the threaded through holes; the tail end of the screw props against a stressed part protruding outwards of the guide wheel slide block forwards or props against a stressed part protruding outwards of the lower driven wheel slide block backwards; the crawler belt is tightly pressed from the outside to stabilize the guide wheel and the lower driven wheel.

8. The wheel-track composite high-clearance ratooning rice harvester of claim 5, wherein: the guide wheel is a double-wheel type, and the guide wheel is obliquely arranged towards the front upper part.

9. The wheel-track composite high-clearance ratooning rice harvester of claim 5, wherein: a balancing rod fixing plate extending downwards is arranged in the middle of the cross beam, and floating block fixing plates extending downwards are arranged at two ends of the cross beam; the floating blocks are rotatably arranged on the floating block fixing plate, and a pair of walking bearing wheels is arranged at two ends of each floating block; and the balance rod for blocking the walking bearing wheel below to run upwards is fixedly arranged on the balance rod fixing plate.

10. The wheel-track composite high-clearance ratooning rice harvester of claim 5, wherein: the narrow wheel traveling mechanism selects a narrow high-pattern paddy field wheel, and the width value range of the high-pattern paddy field wheel is 10cm-15 cm; the surfaces of a driving wheel and a lower driven wheel of the triangular crawler traveling mechanism are provided with the grinding teeth which are embedded with a narrow crawler provided with a circle of holes; the width of the crawler belt ranges from 15cm to 25 cm.

Images