WO2015131809A1

WO2015131809A1 - Travelling apparatus of combine harvester

Info

Publication number: WO2015131809A1
Application number: PCT/CN2015/073594
Authority: WO
Inventors: 冯云云; 钱菊平
Original assignee: 星光农机股份有限公司
Priority date: 2014-03-06
Filing date: 2015-03-04
Publication date: 2015-09-11
Also published as: CN103818489B; CN103818489A

Abstract

Disclosed is a travelling apparatus of a combine harvester, comprising a travelling wheel train (72) and a chassis frame (71), wherein the travelling wheel train (72) comprises multiple bearing wheels (722), an upper idler wheel (724), a lower idler wheel (725), a driving wheel (718) and a tensioning wheel (723), a bearing beam (713) fixing the travelling wheel train is connected underneath the left and right sides of the chassis frame (71), the driving wheel (718) is provided above the outside of the front end of the bearing beam (713), the lower idler wheel (725) is provided outside the centre of the bearing beam (713), three bearing wheels are provided in front of the lower idler wheel (725), three bearing wheels are provided behind the lower idler wheel (725), the upper idler wheel (724) is provided outside above the bearing beam (713), and the tensioning wheel (723) is provided outside the rear end of the bearing beam (713). The apparatus has a simple structure and is easy to implement, the bearing force is uniform, and travel is stable.

Description

Walking device of combine harvester

Technical field

The present invention relates to a walking device for a combine harvester for performing a walking action of a combine harvester, and more particularly to a walking device for a crawler combine harvester.

Background technique

With the advancement of society and the development of science and technology, more and more mechanical equipment is being applied to agricultural production, and combine harvesters are one of them. The combine harvester can complete the harvesting, threshing, separation of stems and debris removal of the cereal crops at one time, and directly obtain various corresponding crop finished products or semi-finished products from the field.

The various steps of the combine harvester are automatically completed during the walking process. Therefore, the conventional combine harvester has a certain running mechanism, which is divided according to the type of the traveling mechanism of the combine harvester, and can be generally divided into a wheel type and a crawler belt. The wheeled traveling mechanism is mainly used for working in dry fields, and the crawler type walking mechanism is mainly used for working in paddy fields. In the case of the crawler type traveling mechanism, since there is a large amount of accumulated water in the paddy field and the pressure bearing capacity is low, the working environment of the crawler type combine harvester having the crawler type traveling mechanism has a very bad working environment, heavy load, and large impact. The roller is very easy to damage and it is difficult to repair.

In the prior art, CN101070080A discloses a crawler walking device of a combine harvester, in which the upper wheel body (upper support wheel) is directly above the roller, and this arrangement greatly weakens the strength of the weight beam. The load beam is too strong. At the same time, there is no lower support wheel in the technical scheme. When the combine harvester passes through the field or the bulge, it will have a huge impact force on the support beam, affecting the life of the combine harvester. .

In order to overcome the above deficiencies, there is a need in the art for a crawler walking device for a combine harvester, in which the increased ground contact area of the crawler track device can reduce the sinking property of the harvester in the paddy field, prolong the service life of the roller, and thereby improve the crawler joint. The life of the harvester.

Summary of the invention

In order to solve the above problems, the present invention provides a traveling device for a combine harvester comprising a traveling wheel train and a chassis frame, the traveling wheel train comprising a plurality of support rollers, an upper support wheel, a lower support wheel, a drive wheel and a Zhang a tension wheel, the underframe is connected with a support beam of a fixed traveling wheel train below the left and right sides thereof, wherein the driving wheel is disposed above the front end of the supporting beam, and the lower supporting wheel is disposed outside the center of the supporting beam. 3 roller wheels are arranged in front of the lower supporting wheel, 3 roller wheels are arranged behind the lower supporting wheel, the upper supporting wheel is arranged outside the supporting beam, and the tensioning wheel is arranged outside the rear end of the supporting beam, the walking wheel The central symmetry plane of the forward direction is on the same plane. .

Preferably, the traveling device has a support beam which is welded up and down by two parallel square tubes of the same cross section.

Preferably, the traveling device has a horizontal distance L1 from the axis of the first roller and the second roller to the rear, and the second weight is The horizontal distance between the wheel and the third wheel is L2, the horizontal distance between the third wheel and the lower wheel is horizontal L3, and the horizontal distance between the lower wheel and the fourth wheel is L4. The horizontal distance between the fourth and fifth wheels is L5, and the horizontal distance between the fifth and sixth wheels is L6, and their relationship is as follows: L3 is equal to L4, L3 or L4 is smaller than L6, and L3 or L4 is larger than L1 or L2 or L5.

Preferably, the mounting shaft center position of the first roller is 2 to 5 mm higher than the mounting shaft center positions of the second to fifth rollers.

Preferably, the mounting shaft center position of the sixth roller is 3 to 8 mm higher than the mounting shaft center positions of the second to fifth rollers.

Preferably, the upper idler has a central axis perpendicular to the center of the fourth and fifth roller axles.

Preferably, the lowest point of the rim of the tensioning wheel is higher than the lowest point of the rim of the preceding roller.

A combine harvester having a walking device as described above.

The invention has simple structure and is easy to implement; the upper supporting wheel is located in the middle of the two supporting rollers, which reduces the force of the supporting position of the supporting roller on the supporting beam, improves the bearing capacity and service life of the supporting beam; Located between the two roller wheels, it relieves the impact force of the harvester on the supporting beam when the harvester passes over the field or the bulge; the distance between the first roller and the last roller is higher than the rest of the roller The distance from the ground is large, which improves the passing performance of the harvester in the field or the bulge; an additional roller is added, and the original five are increased to six, which increases the grounding area of the track and the ground, thereby increasing the paddy field. Passivity.

DRAWINGS

Figure 1 is a schematic side view of the whole machine of the combine harvester.

Figure 2 is a top plan view of the whole machine of the combine harvester.

Figure 3 is a schematic view of a header.

Figure 4 is a schematic illustration of the feeding device of the feeding device.

Figure 5 is a schematic illustration of a threshing apparatus.

Figure 6 is a schematic illustration of a grain cleaning apparatus.

Figure 7 is a schematic illustration of a grass removal device.

Figure 8 is a schematic view of the unloading device.

Figure 9 is a schematic overall view of the walking device.

Figure 10 is a schematic illustration of one embodiment of a running gear train according to the present invention.

Figure 11 is a schematic view of a weight beam.

detailed description

Referring to Figures 1 and 2, the combine harvester can be divided into a header 1, a feeding conveyor 2, a threshing and separating device 3, a grain cleaning device 4, a crushing and grassing device 5, a grain unloading device 6, and a walking device. 7 and other auxiliary devices 8.

Referring to Figures 2 and 3, the header 1 is used to move rice, large (small) wheat and other crops, and cut the bottom of the straw so that The cut crops are poured into a combine harvester, gathered and transported to the feed inlet, which mainly includes a header frame 11, a reel 12, a cutter 13, a header auger 14, a divider 15 and a header drive 16, the header frame as the main frame of the header, supporting the entire functional components of the header, consisting of left and right wall panels, header floor, knife beam, upper and lower beams, reeling rice, large (small) wheat and other crops Dial to the header to facilitate cutting of the cutter. The reel is made up of the plucking lever, the swivel, the reel shaft, the eccentric adjustment, the reel drive shaft, the anti-wrapping cover, the tensioning combination, the adjustable pulley, and the reel The rod is composed of a rod; the web is mounted on both ends of the reel shaft, the arranging wheel is mounted on the circumference of the reel, the anti-winding cover is mounted on the left side, the semi-disc is mounted on the right side, and the reel drive shaft is arranged in the reel strut The right side of the reel drive shaft is equipped with an adjustable pulley. The transmission of the reel is tensioned by a tensioning combination. The cutter is used to cut the bottom of the straw of rice, large (small) wheat, etc., so that the crop can be fed. , consisting of movable knife blade, blade protector, blade cutter, knife beam and auxiliary transport plate; cutter is installed on the front frame of the header The blade and the assisting plate are mounted on the movable blade, the movable blade is installed in the blade, the blade is pressed against the moving blade, the blade is mounted on the blade beam, and the header auger is used for rice, Large (small) wheat and other crops are gathered and transported to the feeding inlet under the action of auger, consisting of a header auger shaft, agitating gantry cover, auger cylinder, height adjustment mechanism, eccentric adjustment mechanism, and telescopic mechanism. The auger gate cover is installed in the auger cylinder inspection installation port, the header auger shaft is installed in the auger cylinder, the height adjustment mechanism is installed on the left and right wall panels of the header, and the eccentric adjustment mechanism is installed on the right side of the header, and the connection is performed. The right end of the auger shaft, the telescopic mechanism is installed in the auger cylinder, the auger shaft is connected, and the position of the gantry is agitated; the divider is used to separate the crop to be cut from the uncut crop, and the inner part and the outer part are separated from the straw The inner plate is arranged on the inner side of the splitter table, and the outer splitter is mounted on the outer side of the splitter header; the header drive is used to transmit power to the connecting rod by the bridge, and the connecting rod passes the eccentric Swinging the pendulum rod, and finally driving the cutter to reciprocate left and right, by the pendulum rod Means), a link, etc., and the bridge; upper bearing seat portion and the eccentric rod is connected to the bridge, the other end of the forward, connected to the pendulum.

The reel 12 is mounted on the upper cross member of the header frame 11, the cutter 13 is mounted on the front cross member of the header frame 11, and the divider 15 is mounted on the front side of the left and right wall panels of the header frame 11. The header auger 14 is installed in the middle of the left and right wall panels of the header frame 11, and the header drive 16 is located on the outer side and the left rear side of the left wall panel of the header frame 11.

Referring to Figure 4, the feed conveyor 2, which may also be referred to as a trough, is used to deliver the crop to the threshing port of the combine, which primarily includes a conveyor chain 21, a drive roller 22, a driven drum 23, and a trough 24. The conveyor chain is used to drive the crops conveyed by the chain auger to the conveying slot by the chain to drive the scraper to the connecting portion of the conveying trough and the threshing rack, and is composed of a chain and a scraper, and the scraper is bent and mounted on the conveying chain. The driving roller inputs power through the conveying main shaft, and transmits the power to the conveying chain, which is composed of a conveying driving shaft and an anti-wrap half sleeve; the output driving shaft passes through two bearing seats at the rear of the conveying trough, and two anti-wrap half The sleeve is hooped around the output drive shaft and located inside the two wall panels of the trough; the passive drum is adjusted by the adjustment mechanism to change its position in the trough, thereby achieving the effect of tensioning the conveyor chain, by the passive shaft, the passive cylinder Adjusting the tensioning mechanism, etc.; the passive roller passes through the passive cylinder through the passive shaft, and two sides are mounted on both sides of the passive shaft. The side arm, the adjusting tensioning mechanism is installed at the inlet end of the trough and is fixed on the inner wall of the left and right wall panels of the trough; the trough is used for connecting the header and the threshing part, transporting the crop from the header feeding inlet to the threshing part, and carrying The whole header and itself are composed of a conveying trough body and a cover plate; the conveying trough body is formed by welding four main components of the left and right wall panels and the upper and lower bottom plates, and two cover plates are respectively installed on the upper and lower bottom plates thereof. Part.

The conveyor chain 21 is mounted in the trough 24, the drive drum 22 is mounted above the left and right wall panels of the trough 24, and the passive drum 23 is supported below the trough 24 by the left and right side arms.

Referring to Figure 5, the threshing separation device 3 comprises a feeding cylinder 31, a threshing drum 32, a top cover 33, a separation screen 34, a threshing gearbox 35, a threshing frame 36, and a feeding cylinder for transporting the troughs Feeding into the threshing drum, which is welded by cone and spiral blades; the feeding cylinder is installed at the front end of the threshing drum near the header conveying trough, and the spiral blades are evenly distributed on the circumference of the cone; the threshing drum is used for conveying the feeding cylinder The crops coming out are separated from the grain and the straw by the rotation, and are composed of a web, a threshing rack, an anti-wrapper disc and a drum main shaft; the threshing drum is installed between the front and rear wall plates of the threshing upper frame, and is connected and fed. The cylinder and the anti-wrapper disc are installed at both ends of the drum main shaft, and the web is installed in the middle, and the threshing gear bar is installed on the circumference of the web; the top cover is used for closing the threshing drum to prevent the throwing, and the grass guide plate installed on the top cover is guided. The role of the crops allows the crops to be transported smoothly and at the same time, and plays a role in changing the guiding speed of the crops. It consists of a grass guide, a gas strut, a wear plate, a cover body, a hinge mechanism and an adjustment mechanism; Inside and outside the cover On the side, the grass guide plate is mounted on the top of the cover body, the adjustment mechanism is installed on the outer top of the cover body, the gas stay bar is installed on the outer rear side of the cover body, the hinge mechanism is installed on the outer left side of the cover body, and the separation screen is used for assisting the drum threshing. At the same time, the grain and the straw are separated, and are composed of a longitudinal sieve strip and a curved sieve strip; the longitudinal sieve strip and the curved sieve strip are alternately welded and assembled, and are installed under the threshing drum; the threshing transmission box is used for transmitting power and the transmission speed. , change direction, when the crop is clogged, the trough can be reversed and spit out in time, composed of box, input shaft, bevel gear, linkage mechanism, spline shaft, reverse shaft, etc.; input shaft is installed on the left side of the box The side and reverse shafts are mounted on the right side of the cabinet, the linkage mechanism is mounted on the reverse shaft, and the bevel gears and spline shafts are mounted in the middle.

The threshing gearbox 35 is installed in front of the threshing frame 36, the feeding cylinder 31 is connected to the threshing drum 32, is installed in the middle of the front and rear wall panels of the threshing rack 36, and the top cover 33 is mounted above the feeding cylinder 31 and the threshing drum 32. The separation screen 34 is installed below the feeding cylinder 31 and the threshing drum 32, and the shaft of the barrel 32 is connected to the threshing gear box 35. In operation, the feeding cylinder 31 is driven by the threshing gearbox 35 to feed the crop of the threshing separation port to the rotating threshing drum 32, and the threshing gearbox 35 drives the threshing drum 32 to rotate the grain to degranulate the grain, grain or short straw. Under the cooperation of the top cover 33 and the separation screen 34, the separation screen 34 is dropped into the grain cleaning, the separation of the crop grain and the residue and the straw is realized, and the straw is discharged out of the threshing rack 36 to make the grain. With the debris falling freely under the action of gravity, the long straw is guided to the smashing grass by the grass guide on the top cover 33.

As shown in FIG. 6, the grain cleaning device 4 mainly includes a cleaning frame 46, a cleaning fan 41, a vibrating screen 42, and collection. The device 43 transmits the auger 44 and the intermediate transmission 45. The cleaning fan generates wind power to separate the grain and the waste, and the straw is blown out of the machine body, and is composed of a volute, an impeller, a fan shaft, an adjustable pulley, a wind direction plate and the like; The fan shaft is equipped with an impeller, the impeller is installed in the volute, the adjustable pulley is installed on the left side of the fan shaft, and the wind direction plate is installed in front of the air outlet; the vibrating screen is used for vibrating separation of the grain and the waste, and the sieve frame and the sieve The sheet, the woven sieve, the stencil, the eccentric shaft, the sprocket, the eccentric block, etc.; the sieve is installed in the sieve frame, the stencil is welded in front of the sieve frame, the woven sieve is installed at the bottom of the sieve frame, and the eccentric shaft is installed on the sieve At the rear of the frame, the sprocket is mounted on the left side of the eccentric shaft, and the eccentric block is mounted on the sprocket; the collector is used to collect the grain after the wind cleaning and vibration cleaning, and is composed of a sliding grain plate, a recovery plate, etc.; Installed in the front lower part of the separation screen, the recovery board is installed under the vibrating screen; the conveying auger is used to transport the collected grain to the grain collecting box or throw the grain into the cleaning rack to realize the secondary re-cleaning, by Conveying auger, removal device, bevel gear The box, the retreating auger and the like; the conveying auger is installed in the collector, the re-augmenting auger is installed in the re-detaching device, the bevel gear box is installed on the right rear side of the conveying auger; the intermediate transmission is used for outputting the diesel engine The power transmission output is composed of an input device, an output device, an intermediate shaft, a tensioning device, etc.; the input device is mounted on the right side of the intermediate shaft, the output device is mounted on the left side of the intermediate shaft, and the tensioning device is installed at the rear of the output device; The cleaning rack supports the entire cleaning mechanism, which is convenient for the maintenance of the cleaning mechanism. It consists of the upper frame and the maintenance window. In front of the inside of the upper frame, the access window is located on the left and right wall panels of the upper frame.

As can be seen from Figures 1, 2, and 7, the pulverizing and grazing device 5 mainly includes a pulverizing frame 51, a pulverizing drum 52, a pulverizing transmission 53, and a diffusing device 54, and the pulverizing frame functions to support the entire pulverizing grass and the protective cover. The crushing frame, the hinge mechanism, the fixed knife seat and the like; the hinge mechanism is installed on the left side of the crushing frame, and the fixed knife seat is installed in the crushing frame; the crushing roller cuts the straw by its own rotation, and the crushing knife and the roller shaft The drum shaft is installed in the cylinder body, the crushing knife is mounted on the cylinder body, and the anti-wrapping ring is installed on both sides of the cylinder body; the crushing drive transmits the power from the cleaning part to the crushing drum , consisting of input device, tensioning device, etc.; the input device is located at the left rear side of the threshing rack, and the tensioning device is located at the left front side of the pulverizing drum; the diffusing device guides the pulverized crop straw to a specified path, by the diffusing plate, The adjusting mechanism is composed; the adjusting mechanism is installed in the crushing frame, below the crushing drum, and the diffusing plate is installed on the inner wall of the crushing frame.

The pulverizing drum 52 is mounted inside the left and right wall panels of the pulverizing frame 51, the diffusing device 54 is installed below the pulverizing drum 52, and the pulverizing drive 53 is connected to the pulverizing drum 52 and the power driving member. In operation, the pulverizing drive 53 transmits power to the pulverizing drum 52 to rotate the pulverizing drum 52, and the straw discharged from the threshing separation, the grain cleaning, and the residue are dropped to the pulverizing frame 51, and are mounted on the pulverizing drum 52. The smash is shredded to the straw with the fixed seat on the pulverizing frame, and the straw is evenly scattered along the diffusion device 54 into the field.

As shown in Figures 2 and 8, the grain unloading device 6 mainly comprises a grain bin 61, a grain unloading auger 62, a grain unloading gearbox 63, and the grain bin collects grain selected from the grain, and is stirred by the horizontal level at the bottom of the grain bin. The dragon transports it to the unloading auger, consisting of a grain tank shell, a horizontal auger, a locking device, a grain box revolving device, a dispersing swinging mechanism, etc.; the horizontal auger is installed under the inside of the grain tank casing, and the scattered swinging mechanism Installed above the horizontal auger in the grain tank casing, the grain box revolving device is installed in the grain tank shell On the rear side of the body, the locking device is installed on the front side of the grain tank casing; the unloading grain auger conveys and transports the grain conveyed by the horizontal auger in the grain box to a designated position, which is composed of auger cylinder, auger slewing seat, and liter The auger dragon, the reversing gear box and the like; the lifting auger is installed in the auger cylinder, the auger slewing seat is installed under the auger cylinder, and the reversing gear box is installed at the bottom of the auger cylinder and the level inside the grain box The auger connection; the unloading grain transmission box transmits the power of the engine to the horizontal auger and the unloading auger in the grain box to achieve the purpose of unloading the grain, consisting of a box body, an eccentric sleeve, a vibration mechanism, an input shaft, an output shaft, and the like. The input shaft is installed in the box body to the left, the output shaft is installed in the box body toward the rear, the eccentric sleeve is installed in the grain box and the output shaft is connected through the spline sleeve, and the vibration mechanism is mounted on the eccentric sleeve.

The unloading grain transmission box 63 is installed at the lower end of the front side of the grain tank 61, and is connected with the horizontal auger in the grain tank 61. The unloading grain auger 62 is installed at the lower end of the rear side of the grain tank 61, and is connected with the horizontal auger in the grain tank 61. The grain bin 61 stores the grain in the auger in the unloading auger 62, and the power is transferred from the unloading gearbox 63 to the horizontal auger in the grain tank 61 to transport the grain in the grain tank 61 to the unloading grain. The dragon 62 is agitated and transported to the designated location by the unloading auger 62.

As seen in Figures 2 and 9, the other auxiliary device 8 mainly comprises a protective cover 81 and a lighting system 82, wherein the protective cover 81 comprises a header guard, a trough cover, a thresher cover, a cleaning machine cover, and a roller The cover, the unloading protection plate 816, the grass cover cover and the like are used for protecting the operator and the machine; the illumination system 82 allows the operator to perform the normal operation of the combine harvester at night and instruct the combine harvester machine The width.

The traveling device 7 mainly includes a chassis frame 71, a traveling wheel train 72, a power system 73, a hydraulic system 74, an electrical system 76, and a console 75. The traveling wheel train 72 is mounted on a support beam of the chassis frame 71, and the power system 73 The diesel engine is mounted on the front cross member and the middle cross member of the chassis frame 71, the gearbox in the power system 73 is mounted on the support base of the chassis frame 71, and the muffler in the power system 73 is mounted in the lower middle of the chassis frame 71. The hydraulic system 74 and the console 75 are mounted at the front end of the chassis frame 71. The chassis frame 71, the traveling wheel train 72 and the console 75 are mostly made of Q235-A, and the sprocket is 45 forged steel.

Referring to Figures 10-11, the traveling gear train 72 includes a driving wheel 728, a tensioning wheel 723, a roller 722, an upper roller 724, and a lower roller 725. The driving wheel 718 is disposed above the front end of the weight beam 713, and The power transmitted from the transmission 737 is transmitted to the crawler belt 721, and the lower idler pulley 725 is disposed outside the center of the weight beam 713. The support beam 713 is welded by the two square tubes 722a and 722b, and the lower idler pulley 725 is mounted on the support weight. On the lower tube 713a of the beam 713, the roller 722 is mounted on the lower tube 713a of the weight beam 713, the three

roller

722a, 722b, 722c are disposed in front of the lower roller 725, and the front rail 726a is mounted on the above three Below the roller 722, three roller 722d, 722e, 722f are disposed behind the lower roller 725, the rear rail 726b is mounted below the three roller 722, and the upper roller 724 is disposed on the support beam 713. The upper outer side of the upper tube 713b is located in the middle of the fourth and fifth roller axles for receiving the crawler belt 721 to be suspended by its own weight, and the tensioning pulley 723 is disposed outside the rear end of the weight beam 713, and the traveling wheel train The central symmetry plane of the advancing direction is on the same plane, and the tensioning wheel 723 is fixed to the walking by the tensioning mechanism 727 Lowest rack, tension pulley 723 is higher than the front rim At the lowest point of the rim of any of the weight wheels 722, the track 721 is wrapped around the outside of the drive wheel 728, the guide rail 726, the roller 722, the tension pulley 723 and the upper idler 724, and the tensioning mechanism 727 is along the support beam. The horizontal direction of the 713 moves back and forth to tension or release the track 721.

The horizontal distance from the axis of the first roller 722a and the second roller 722b to the rear is L1, and the horizontal distance between the second roller 722b and the third roller 722c is L2, and the third roller The horizontal distance from the axis of the lower roller is horizontal L3, the horizontal distance between the lower roller and the fourth roller is L4, and the horizontal distance between the fourth roller and the fifth roller is L5, The horizontal distance between the five heavy wheels and the sixth heavy wheel is L6, and their relationship is as follows: L1 is equal to L2, L3 is equal to L4, L3 or L4 is smaller than L6, and L3 or L4 is greater than L1 or L2 or L5.

As shown in Fig. 11, H1 is the vertical distance from the axis of the first roller 722a to the lower surface of the lower tube 713b. The lower idler wheel 725 is on the same plane as the mounting axis of the

roller

722b, 722c, 722d, 722e, and H2 is the vertical distance from their mounting axis to the lower surface of the lower tube 713b. H3 is the vertical distance from the mounting axis of the sixth roller 722a to the lower surface of the lower tube 713b, and the relationship between them is as follows: H3 is greater than H2 by about 3-8 mm, H1 is equal to H2, or H1 is greater than H2 by about 2-4 mm.

The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, and any person skilled in the art can easily think of within the technical scope disclosed in the patent of the present invention. Variations or substitutions are intended to be covered by the scope of the invention.

Claims

A walking device for a combine harvester comprising a traveling wheel train and a chassis frame, the traveling wheel train comprising a plurality of support rollers, an upper support wheel, a lower support wheel, a drive wheel and a tensioning wheel, the chassis frame A support beam with a fixed traveling wheel train is connected below the left and right sides thereof, wherein the driving wheel is disposed above the outer side of the front end of the supporting beam, and the lower supporting wheel is disposed outside the center of the supporting beam, wherein the supporting wheel is included a first roller, a second roller, a third roller, a fourth roller, a fifth roller, and a sixth weight arranged on the supporting beam from the side close to the driving wheel Wheels, three roller wheels are arranged in front of the lower supporting wheel, three roller wheels are arranged behind the lower supporting wheel, the upper supporting wheel is arranged outside the supporting beam, and the tensioning wheel is arranged outside the rear end of the supporting beam, The central symmetry plane of the traveling wheel train in the forward direction is on the same plane.
A walking device for a combine harvester according to claim 1, wherein the weight beam is formed by welding upper and lower tubes of the same parallel section and the lower tube.
A walking device for a combine harvester according to claim 2, wherein the plurality of support rollers and the lower support rollers are each fixed to the lower tube of the support beam, and the axis is perpendicular to the side of the lower tube.
A traveling device for a combine harvester according to claim 1, wherein the mounting axis of the lower idler is at the same horizontal position as the second to fifth roller axles.
A walking device for a combine harvester according to claim 1, wherein the lowest point of the rim of the tensioning pulley is higher than the lowest point of the rim of the preceding roller.
A walking device for a combine harvester according to claim 1, wherein the horizontal distance between the first roller and the second roller is L1, and the axes of the second roller and the third roller are The horizontal distance of the heart is L2, the horizontal distance between the axis of the third roller and the lower roller is horizontal L3, the horizontal distance of the axis of the lower roller and the fourth roller is L4, and the fourth roller and the fifth branch The horizontal distance of the axis of the heavy wheel is L5, and the horizontal distance of the axis of the fifth wheel and the sixth wheel is L6, and the relationship between them is as follows: L3 is equal to L4, L3 or L4 is smaller than L6, and L3 or L4 is greater than L1 Or L2 or L5.
A traveling device for a combine harvester according to any of claims 1-2, characterized in that the position of the mounting axis of the sixth roller is 3 to 8 mm higher than the position of the mounting axis of the second to fifth rollers.
A traveling device for a combine harvester according to claim 1, wherein the upper idler has a center perpendicular to the center of the fourth and fifth roller axles.
A combine harvester having the walking device of any of claims 1-8.