CN1507398A

CN1507398A - Rice transplanter

Info

Publication number: CN1507398A
Application number: CNA018232221A
Authority: CN
Inventors: 井上诚; 史; 前川智史
Original assignee: Yanmar Agricultural Equipment Co Ltd
Current assignee: Yanmar Co Ltd
Priority date: 2001-05-22
Filing date: 2001-09-10
Publication date: 2004-06-23
Anticipated expiration: 2021-09-10
Also published as: KR100838216B1; CN1943300A; WO2002094640A1; KR100824659B1; CN100486415C; CN100406328C; KR20060123787A; JP2002335726A; KR20060126628A; TWI228970B; KR20040012772A; KR100824658B1

Abstract

A rice transplanter, wherein a body main frame (16) forming a frame is divided into three parts, i.e., a front frame (17), a center frame (18), and a rear frame (19), whereby the handling and assemblage of the transplanter can be improved more than the transplanter having the body main frame (16) of long integral structure.

Description

Rice transplanter

Technical field

The present invention relates to a kind of portion of transplanting seedlings that will have the seedling carrying stand and the pawl that transplants seedlings and be installed on the Trolley, carry out the rice transplanter of rice transplanting operation continuously.

Technical background

Known a kind of disclosed by Japanese kokai publication sho 61-285175 communique etc., connect engine stand in the front side of gearbox body and connect the rice transplanter of the structure of vehicle frame at rear side, but when the maintenance gearbox body, all need to remove the connection of engine stand or car body mainframe at every turn.

In addition, under front and back wheel, driving engine and driver's seat are installed in situation on the mainframe, because driving engine carries at the mainframe upper face side, the hot blast of driving engine periphery is because of the sealing side discharge downwards of mainframe, has the situation of cooled engine effectively, can not easily reduce simultaneously the installation dimension of the above-below direction of driving engine and mainframe, exist the problem of the overall height that is difficult for reduction engine installation portion.In addition, because width is installed about the left and right sides antivibrating parts of supporting engine to be restricted, the vibration of the driving engine that transmits to this machine torsional direction (around body center's line of fore-and-aft direction) with respect to left and right sides mainframe is difficult for reducing, and has the problem of weight that the wall thickness (minimizing of the sectional area of reduction mainframe intensity) that is difficult for by the attenuate mainframe reduces mainframe etc. simultaneously.

And, owing to particularly on mainframe, be provided with the parts of the special use of the standby seedling platform of supporting, be difficult for simplifying member, be difficult for expendable weight and cutting down cost, when carrying on being loaded into Vehicle mounted station simultaneously, the seedling platform pillar of the upside that has needed to cut apart up and down takes out, the situation of joint gap can take place in the seam that exists seedling platform pillar, in addition, because the seedling platform pillar of downside is fixed on the mainframe, existing needs to guarantee on the bigger structures such as accommodation space such as tool room and the problem of installing.

Summary of the invention

The present invention will constitute the structure that the car body mainframe 16 of rice transplanter body is divided into front frame 17, middle vehicle frame 18 and rear portion vehicle frame 19 these three parts, compare for the structure of microscler Construction integration with car body mainframe 16, can make operation and installation property good.

In addition, owing to be connected with front bearing box 38 on middle vehicle frame 18, driving engine 36 grades can be easy to install integratedly and take out with gearbox body 37 and front bearing box 38 under the state that is connected in side arm 17, can improve the maintainability of gearbox body 37 and front bearing box 38.

Moreover, because the basal area of front vehicle frame 17 is formed basal area greater than back vehicle frame 19, simultaneously, driving engine 36 is by front frame 17 supportings, when making driving engine 36 as weight be supported on the side arm 17 well by intensity, good with the anterior-posterior balance of the portion of transplanting seedlings 3 that is installed on the body rear side, can improve the stability of body.

In addition, in front and back wheel 5,6, driving engine 36 and driver's seat 7 are installed in rice transplanter on the left and right sides mainframe 16, because the width that is provided with of left and right sides mainframe 16 is arranged to left and right sides width greater than driving engine 36, look from the side, driving engine 36 bottoms are overlapped on the mainframe 16, between left and right sides mainframe 16 and driving engine 36 both sides, guaranteed the ventilation space, the hot blast of driving engine 36 peripheries can be discharged swimmingly, can improve the cooling effectiveness of driving engine 36, can easily driving engine be provided with lowly simultaneously to reduce the center of gravity of body.

In addition, because but the both sides of the rack unit 35 of the antivibrating parts 53 of mounting support driving engine 36 are fixed on the left and right sides mainframe 16, reinforcement by aforementioned rack unit 35, can reduce the intensity of mainframe 16, and form with lighter weight, simultaneously can be with the supporting of driving engine 36 vibrationproof ground by the structure of high rigid mounting, and can enlarge the installation interval of left and right sides antivibrating parts 53, reduction can be simplified the vibrationproof performance of body structure and raising driving engine 36 etc. to the vibration of the driving engine 36 of this machine torsional direction transmission.

In addition; because gearbox body 37 is fixed on the rack unit 35; can easily guarantee the intensity of vibration of relative driving engine 36 above-below directions of rack unit 35; can easily improve and use the connection left and right sides mainframe 16 that rack unit 35 carries out and the intensity of supporting engine 36 usefulness; can easily improve the rigidity of rack unit 35, make driving engine 36 supporting structures simple and in light weight at this machine torsional direction.

In addition; because substantial middle at the installation width of left and right sides antivibrating parts 53; be fixed with rack unit 35 and gearbox body 37; even torsional deflection power for the either direction to the left and right that produces because of vibration of driving engine 36 etc.; by with the fixing intensity that also can guarantee rack unit 35 of gearbox body 37; can easily prevent the deformation damage of rack unit 35, to improve durability etc.

In addition, passing through

pedal pillar

24,25, on mainframe 16, be provided with pedal 9, and cover the rice transplanter of mainframe 16 upsides by pedal 9, at

aforementioned pedal pillar

24,25 are provided with the installation portion of loading supply with the seedling platform pillar 94 of the standby seedling platform 15 of standby seedling, and seedling platform pillar 94 is installed in pedal pillar 24, on 25, therefore, by being also used as the pedal pillar 24 of high rigidity, 25 and seedling platform pillar 94 uprightly is set, the number of components by seedling platform pillar 94 cut down to be installed and the quantity of assembling procedure is expendable weight and reduce manufacturing cost easily just, while is by the load of the standby seedling platform 15 of the non-yielding prop of pedal 9, structure favourable on intensity can be become, the simplification of the housing construction of standby seedling platform 15 can be easily realized installing.

Description of drawings

Fig. 1 is the single-piece lateral plan.

Fig. 2 is the birds-eye view of Fig. 1.

Fig. 3 is the side illustration figure of Trolley.

Fig. 4 is the birds-eye view of mainframe portion.

Fig. 5 is the lateral plan of Fig. 4.

Fig. 6 is the lateral plan of change speed gear box body.

Fig. 7 is the lateral plan of engine-drive portion.

Fig. 8 is the birds-eye view of Fig. 7.

Fig. 9 is the block diagram that has carried the car body of driving engine.

Figure 10 is the enlarged drawing of Fig. 9.

Figure 11 is the block diagram that has carried the car body of gearbox body.

Figure 12 is the enlarged drawing of Figure 11.

Figure 13 is the block diagram of walking driving section.

Figure 14 is the block diagram of mainframe front portion.

Figure 15 is the enlarged drawing of Figure 14.

Figure 16 is the upper face side block diagram of driving engine portion.

Figure 17 is the following side block diagram of driving engine portion.

Figure 18 is the front elevation of driving engine portion.

Figure 19 is the birds-eye view of driving engine portion.

Figure 20 is the instruction diagram of facing of front bearing box.

Figure 21 is the section-drawing of left front axle box.

Figure 22 is the section-drawing of left front axle box.

Figure 23 is the enlarged drawing of Figure 21.

Figure 24 is the instruction diagram of overlooking of Figure 23.

Figure 25 is the front instruction diagram of standby seedling platform.

Figure 26 is the instruction diagram of taking in of seedling platform pillar.

The specific embodiment

Below, describe embodiments of the invention with reference to the accompanying drawings in detail.Fig. 1 is the single-piece lateral plan, Fig. 2 is the birds-eye view of Fig. 1, but transplant seedlings portion 3 by connecting rod mechanism 2 free liftings be installed in the rear side of Trolley 1, simultaneously fertilizer is embedded in side slat by the seedling side of the portion's of transplanting seedlings 3 plantations, fertilizer applicator 4 carries on the rear side of Trolley 1, on Trolley 1, have front and back wheel 5,6, driver's seat 7, bearing circle 8, the below that forms the pedal 9 of car body cover is provided with front and back wheel 5,6, rear side at the hood 10 of pedal 9 front sides is provided with bearing circle 8, is provided with driver's seat 7 on pedal 9 rear sides.In addition, in the portion of transplanting seedlings 3, be provided with the seedling carrying stand 11 of 5 usefulness of planting and the pawl 12 that transplants seedlings, in the rice transplanting operation of carrying out 5 seedlings are transplanted seedlings continuously, in the soil of the side of these 5 seedlings, the air-supply of carrying out by supply ventilating fan 13 is carried, the fertilising operation of from fertilizer applicator 4 fertilizer being sent and being imbedded by 5 delivery hoses 14, on the other hand, the standby seedling of the standby seedling platform 15 of aforementioned hood 10 sides to seedling carrying stand 11 supplies, is proceeded the rice transplanting operation.

Moreover, extremely shown in Figure 15 as Fig. 3, on aforementioned Trolley 1, has pair of right and left mainframe 16, side arm 17, see the mainframe 16 that roughly is formed by connecting on middle frame 18 and after-frame 19 planes linear, about after-frame 19 rear sides be fixed with portal 20, about side arm 17 front sides on be fixed with the anterior bumper 22 and hauling hook 23 of mounting center mark 21 in, be fixed with pair of right and left brow landing 24 in the outer side of side arm 17 front and rear parts and the outer side of after-frame 19 front portions, 25,26, upside at after-frame 19 pars intermedias, be fixed with microscler brow landing 27 on the left and right directions overall with, be fixed with pair of right and left brow landing 28 at aforementioned portal 20 upsides, in addition, has the level frame 30 that possesses left and right sides brow landing 29, connect each brow landing 24～26 outside by front side frame 31, connect each brow landing 26 by

rear side

32,27 and level frame 30 outsides, load above the brow landing 24～29 and fixed pedestal 9 at each, simultaneously can freely load and unload in the outside of rear side 32 the bolt usefulness pedal 33 of getting on or off the bus.

Moreover, as shown in Figure 4, on left and right sides side arm 17, be fixed with pair of right and left carriage 34 and rack unit 35 carries driving engine 36, simultaneously as shown in Figure 8, be fixed with left and right sides front bearing box 38 in the both sides of gearbox body 37, installing front-wheel 5 on each case 38, the middle frame 18 of

frame

17,19 is fixed on aforementioned case 38 upsides before and after connecting.In addition, the output of driving engine 36 is fixed on gearbox body 37 front sides to the oil pressure progressive gear transmission 39 of gearbox body 37 transmission with by the torque generator of front-wheel 5 steering efforts that increase bearing circle 8 and the steering box 40 that gear mechanism constitutes, simultaneously, be fixed with rear axle casing 42 at gearbox body 37 rear sides by body case 41, the both sides of portal 20 are fixed on the aforementioned case 42, are equiped with trailing wheel 6 on aforementioned case 42.In addition, at the upside of aforementioned body 41 oil pressure lift cylinders 43 is installed, the aforementioned linkage 2 of portion 3 is connected but the piston of aforementioned oil hydraulic cylinder 43 and the supporting of free lifting ground are transplanted seedlings.

From as can be known above-mentioned,, can make operation and installation property good because the car body mainframe 16 that constitutes body is compared for the structure of microscler Construction integration with car body mainframe 16 for being divided into the structure of side arm 17, middle frame 18 and after-frame 19 these three parts.

In addition, owing to be connected with front bearing box 38 on middle frame 18, driving engine 36 grades can be easy to install integratedly and take out with gearbox body 37 and front bearing box 38 under the state that is connected in side arm 17, can improve the maintainability of gearbox body 37 and front bearing box 38.

Moreover, because the basal area of side arm 17 is arranged to the basal area greater than after-frame 19, driving engine 36 is by side arm 17 supportings simultaneously, driving engine 36 as weight is supported on the side arm 17 well by intensity, while is good with the anterior-posterior balance of the portion of transplanting seedlings 3 that is installed on the body rear side, can improve the stability of body.

Moreover, as Fig. 4, shown in Figure 9, the two ends of fuel tank stand 44 are fixed on the front side of left and right sides after-frame 19, Fuel Tank 45 to driving engine 36 fuelings is fixed on the stand 44, is provided with fuel tank 45 between left and right sides after-frame 19, simultaneously, as shown in Figure 3, seat frame 46 uprightly is being set on after-frame 19, by seat platform 47 driver's seat 7 is being installed at seat frame 46 upsides, driver's seat 7 is arranged on the front upper of aforementioned fuel tank 45.In addition, side is equipped with the silencer 49 of driving engine 36 by pillar 48 below the left front bogie side frame 31 that the brow landing 24,25 by the left side supports, be fixed with storage battery on the left front bogie side frame 31 of while by

brow landing

24,25 supportings on right side and organize a performance 50, as shown in figure 14, making the battery pack 51 of driving engine 36 starting be installed in aforementioned storage battery organizes a performance on 50, in two sides of driving engine 36, be provided with silencer 49 and battery pack 51 dividually on the pedal 9 following sides.

Moreover, extremely shown in Figure 19 as Figure 16, be fixed with base plate 52 on the bottom surface of aforementioned driving engine 36, the left and right sides of aforementioned base plate 52 by front and back and about 4 rubber system antivibrating parts 53 be fixed on aforementioned bracket 34 and the rack unit 35, simultaneously, can freely load and unload the ground bolt on the following right side of face of base plate 52 bearing cartridge 54 is arranged, on the bearing cartridge 54 freely to rotate bearing be supported with transmission shaft 59, the front side of transmission shaft 59 is by

belt pulley

55,56 and belt 57 and being connected with the output shaft 58 of driving engine 36 front sides, as shown in Figure 7, the rear side of aforementioned transmission shaft 59 can free be connected with the output shaft 60 of aforementioned change speed gear box 39 front sides discretely, the propulsive effort of driving engine 36 transmits to aforementioned change speed gear box 39 by transmission shaft 59, PTO axle 61a rearward stretches out from gearbox body 37 rear sides simultaneously, to the portion's of transplanting seedlings 3 transferring power, and rear drive shaft 61 rearward stretches out from gearbox body 37, to rear axle casing 42 inputs, pass through rear axle casing 42 to trailing wheel 6 transferring power from gearbox body 37.In addition, pass through front bearing box 38 to front-wheel 5 transferring power from gearbox body 37.

Moreover, as shown in figure 18, owing to form bendingly downwards with the state also lower in the middle of the aforementioned rack unit 35 than the bottom surface of side arm 17, and antivibrating parts 53 is arranged on and side arm 17 roughly on the sustained height, therefore, in front and back wheel 5,6, driving engine 36 and driver's seat 7 are installed in the rice transplanter on the left and right sides mainframe 16, the side arm about 17 of left and right sides mainframe 16 the left and right sides width of width greater than driving engine 36 be set, as shown in Figure 7, the bottom of driving engine 36 is seen on the side arm 17 that is overlapped on as mainframe 16 from the side, between left and right sides side arm 17 and driving engine 36 both sides, to have guaranteed the ventilation space, the hot blast of driving engine 36 peripheries can be discharged swimmingly, improved the cooling effectiveness of driving engine 36, thereby than the lowland center of gravity that driving engine can reduce body has been set simultaneously.

In addition, but on the side arm 17 of left and right sides mainframe 16, fixing the both sides of rack unit 35 of the antivibrating parts 53 of mounting support driving engine 36, reinforcement by aforementioned rack unit 35, can reduce the intensity of left and right sides side arm 17, form with lighter weight, structure by high rigid mounting simultaneously, driving engine 36 vibrationproof are supported, and the installation interval of expansion left and right sides antivibrating parts 53, the vibration of the driving engine 36 that transmits to this machine torsional direction can be reduced, the vibrationproof performance of body structure and raising driving engine 36 etc. can be simplified.

Moreover, as Figure 12, shown in Figure 180, the both sides that the plane is seen as the seat board 62 of a shape are fixed on the substantial middle of the left and right sides width of rack unit 35, the door shape central authorities of seat board 62 are being provided with from rack unit 35 is rearward outstanding, on the pedestal 63 that the steering box 40 of aforementioned gearbox body 37 front sides forms previously, can freely load and unload the ground bolt has aforementioned seat board 62, and the left and right sides width substantial middle of the rack unit 35 on the side arm 17 about both sides are fixed on is fixed on the gearbox body 37 by steering box 40.And, as Fig. 8, shown in Figure 12, because gearbox body 37 is fixed on the rack unit 35, guaranteed the intensity of the vibration of rack unit 35 relative driving engine 36 above-below directions, improved and used the connection left and right sides mainframe 16 that rack unit 35 carries out and the intensity of supporting engine 36, improved the rigidity of this machine torsional direction of rack unit 35, it is also in light weight that driving engine 36 supporting constructions are simplified, simultaneously, substantial middle at the installation width of left and right sides antivibrating parts 53, be fixed with rack unit 35 and gearbox body 37, even with respect to the torsional deflection power of the left and right sides either direction that produces because of the vibration of driving engine 36 etc., also can be by with gearbox body 37 fixing, guaranteed the intensity of rack unit 35, the deformation damage of rack unit 35 can be prevented, durability etc. can be improved.

In addition, as Fig. 7, shown in Figure 17, the other structure of bearing cartridge 54 usefulness can be bolted to the following side of the base plate 52 that forms engine stand with freely loading and unloading, by the loading and unloading of bearing cartridge 54 and the adjustment of installation attitude and position, can be the structure of maintenances such as the replacing that can carry out belt 57 well, after driving engine 36 is installed, obtain the adjusting accuracy of belt 57, not only improve assembling operation, and improved the installing precision of belt 57, can improve the life-span and the reliability of belt 57.

In addition, as Figure 17, shown in Figure 180, on the front side of aforementioned driving engine 36, be provided with electrical generator 64, output shaft 58 by driving engine 36 drives electrical generator 64, simultaneously in front side as the aforementioned base plate 52 of engine stand, the substantial middle of left and right sides width is fixed with pallet 65, electrical generator 64 is bolted on driving engine 36 and the pallet 65, because the support setting of electrical generator 64 also is installed on driving engine 36 and the base plate 52, with only come the structure in the past of support generator 64 to compare with driving engine 36, the strong vibration of driving engine 36 prevents the shaking by force of support unit of electrical generator 64 relatively, the densification of the support unit of the electrical generators such as connecting portion 64 of realization pallet 65 and driving engine 36, reduce cost and expendable weight, also can reduce the vibration of driving engine 36 and base plate 52 etc., improve this machine performance.

Moreover, extremely shown in Figure 24 as Figure 13, Figure 20, in left and right sides front bearing box 38, have: with the machine inboard be fixed on left and right

sides delivery casing

66,67 on the aforementioned gearbox body 37, be fixed on the machine outside of this

delivery casing

66,67 about before case 68, can be connected the left and right tooth roller box 69 of these preceding case 68 downsides with being free to slide and be fixed on aforementioned before the case cover 70 of case 68 upsides; Be inserted with left and

right output shaft

71,72 in left and right

sides delivery casing

66,67, left and

right output shaft

71,72 is connected with the differential gear train 73 of change speed gear box 37, the speed change of driving engine 36 and differential output are from gear mechanism 73

output shaft

71,72 transmission to the left and right, simultaneously on aforesaid gears case 69 outwards bearing be supported with left and right sides axletree 74, axletree 74 bearings in the left and right sides are supporting left and right sides front-wheel 5.

Moreover, as Figure 13, shown in Figure 20, upper outer bolt at aforesaid gears case 69 has joint arm 75, the downside that the spindle arm 76 that is swung by quilts such as moment of torsion electrical generators is arranged at steering box 40 is operated in the revolution of direction of passage dish 8 in addition, spindle arm 76 is connected with left and right sides joint arm 75 by tierod 77, the center pin shape axle drive shaft 78 of interpolations in the case 68 before aforementioned is to change the direction of front-wheel 5 pro rata with the operation angle of bearing circle 8.

Moreover, as Figure 21, shown in Figure 22, the upside of axle drive shaft 78 is by

bevel gear

79,80 and with

aforementioned output shaft

71,72 connect, the downside of axle drive shaft 78 is by

bevel gear

81,82 are connected with axletree 74, from

output shaft

71,72 in the time of front-wheel 5 transferring power, aforementioned joint arm 75 extends abreast upward with axle drive shaft 78, the upside of joint arm 75 and columnar slip and revolution form with support 83, the support 83 of joint arm 75 can be free to slide and intercalation pivotally in the outside of the cylinder portion of aforementioned case cover 70, be bearing in to joint arm 75 centers on aforesaid gears case 69 and the case cover 70.

In addition, the downside that is provided with the axle drive shaft 78 of bevel gear 81 is supported on the gear case 69 by bearing 84 bearings, simultaneously with the upper end side of the chimeric axle drive shaft 78 of bevel gear 80 splines, be supported with the following side of piston shape carriage 85 by bearing 86 bearings, the suspension spring 87 of the compression spring shape of size diameter contacts with the upper face side of aforementioned bracket 85, be contained in the suspension spring 87 in the cylinder body portion that makes the case cover 70 that aforementioned bracket 85 slides along the vertical direction, by aforementioned axle drive shaft 78 and gear case 69, by suspension spring 87 front-wheel 5 is suppressed downwards, the earth contact pressure of front-wheel 5 is kept by aforementioned spring 87, be inserted in the central part of spring 87 in the roughly the same long mandrel 88 of size during with the maximum compression of aforementioned spring 87, by the weight of the car body of Trolley 1 with aforementioned spring 87 maximum compression, at four-wheel 5, under the common state of 6 connected to chassiss, with aforementioned spring 87 closed contacts, overall height is remained necessarily, on the other hand, when the three-wheel connected to chassis step of any one is walked in the left and right sides of left and right sides trailing wheel 6 and front-wheel 5, elongation by suspension spring 87 descends front-wheel 5, keep the ground connection of front-wheel 5, skid preventing.

Moreover, as Figure 23, shown in Figure 24, stops 89 forms with the inboard of aforementioned joint arm 75, be used to limit the rotating projection 90 in the left and right sides, 91 with aforementioned before the front and back outside of case 68 form, the hard-over operation of direction of passage dish 8, with stops 89 and each projection 90, one of them contact of 91, the direction conversion of restriction front-wheel 5, stops 89 form with because of about equally microscler of the sliding scale (suspension spring stroke) of the gear case 69 of the flexible generation of suspension spring 87 and joint arm 75, in the gamut that joint arm 75 is slided, stops 89 can with

projection

90,91 contacts.

As mentioned above as can be known, at the downside that is connected in the preceding case 68 on the local side, be provided with the gear case 69 that front-wheel 5 is installed, when constituting front bearing box 38, freely turn round and be provided with in the rice transplanter of aforesaid gears case 69 with being free to slide along the vertical direction around axle drive shaft 78 as center pin, to be contained in the case cover 70 of preceding case 68 upsides in the suspension spring 87 as the elastomeric element that aforesaid gears case 69 is suppressed downwards, the opposite side that a side is fixed on the joint arm 75 on the gear case 69 can be bearing on the aforementioned case cover 70 with being free to slide.And, the upper and lower sides of aforementioned joint arm 75 is more firmly supported by becoming central support structure, the slide contact part of preceding case 68 and gear case 69 can be supported securely, deformation force with reply overturning direction or torsional direction, for example thick but guarantee the necessary intensity of supporting of front-wheel 5 as the diameter of axle of the axle drive shaft 78 of center pin, can realize alleviating the weight of front bearing box 38 structures that are provided with front-wheel 5 and reduce manufacturing cost, and slide in the outside that makes joint arm 75 be provided with the case cover 70 of suspension spring 87 in the inboard, so that the structure of change speed gear box to be set with saving the space.

In addition, be arranged on the inboard of joint arm 75 with the corresponding stops 89 of the sliding scale of the above-below direction at least of gear case 69 as the revolution limiting part, so that aforementioned stops 89 to be set with saving the space, ground such as dual-purpose joint arm 75 or preceding case 68 form stops 89, the shared quantity that reduces member by component parts, obtain limiting intensity easily around the necessary stops 89 of revolution of the gear case 69 of axle drive shaft 78, simultaneously the support 83 following sides of case cover 70 or preceding case 68 sides and joint arm 75 contacts, limited the downward slip of gear case 69, compared with the past, the retainers such as stopping wheel that case 68 and gear case 69 stretch out the most for a long time before not needing, do not need to be provided with especially the stop component of the elongation action of limiting gear case 69, can simplify the supporting structure of gear case 69 etc., and the dual-purpose of the joint arm 75 by high rigidity, stops structure more favourable on intensity be can obtain, the reduction of manufacturing cost and the raising of durability realized.

Moreover, but by suspension spring 87 free liftings be provided with relatively in the rice transplanter of this machine as the front-wheel 5 of road wheel, with front-wheel 5 relative these seats in the plane when the hoisting position as the power of state ground setting suspension spring 87 usually, the structure that can not be created in the suspension spring 87 of supporting front-wheel 5 in the lifting way is such, make the situation of overall height variation because of lift-launch weight such as standby seedlings, in the rice seedling bed, body is carried out the rice transplanting operation under the state of approximate horizontal ground supporting, to keep the precision of transplanting seedlings of seedling, even have the steps such as recess in arable land, also can guarantee the earth contact pressure of front-wheel 5 by the ground connection effect of suspension spring 87, reduce skidding of front-wheel 5, keep walking performance, suspension spring 87 is arranged on the upper side to the axle drive shaft 78 of front-wheel 5 transmission of drive force, between aforementioned axle drive shaft 78 and suspension spring 87, have bearing 86 and carriage 85, compare with the structure that for example is bearing in axle drive shaft 78 outsides by package, the mounting structure of suspension spring 87 is simple, the distortion of the suspension spring 87 that the turning force because of axle drive shaft 78 causes or friction etc. have been prevented, and widened the areal of support of suspension spring 87 by aforementioned bracket 85, can prevent falling down of spring 87.

In addition, as this machine that causes because of car body weight and front-wheel 5 immediate minimum overall height states, with according to walking ground-surface step, front-wheel 5 leaves from this machine, make front-wheel 5 connected to chassis states that suspension spring 87 is set, standby seedling that carries when preventing the rice transplanting operation or counterweight etc. make suspension spring 87 distortion, stop the overall height that causes because of the car body changes in weight to be changed so that the phenomenon that body is tumbled, and can reduce skidding of the front-wheel 5 that causes because of the ground-surface step, prevent to crawl and travel.

Moreover, as shown in figure 22, adopt output shaft 72 to be supported on the machine outside of the delivery casing 67 of fixing preceding case 68 by bearing 92 bearings, the lug boss 93 of the bevel gear 79 before being arranged in the case 68 extends setting to output shaft 72 directions, aforementioned lug boss 93 end faces contact with bearing 92, bear the structure of the thrust load of bevel gear 79, do not need to bear the axle collar etc. of the thrust loading of bevel gear 79, can reduce number of components, reduce the finish size error of output shaft 72 directions that are used for differential shaft, can guarantee the gear teeth backlash of bevel gear 79.In addition, employing is born the topmost of case cover 70 of aforementioned suspension spring 87 near the following side of pedal 9, on case cover 70 heads that bear part, be provided with pedal 9 usefulness rubber system support unit 70a as aforementioned spring 87, case cover 70 can be used as the structure that pedal 9 installing components use, saved the pillar of supporting pedal 9, reduced number of components, in addition front bearing box 38 supporting pedal 9 and mainframe 16 the two, pedal 9 can be supported rigidly by height.

Moreover, as Figure 14, Figure 15, shown in Figure 25, have on aforementioned standby seedling platform 15 that the side is seen as the seedling carrying stand pillar 94 of a shape and by the seedling dish 95 that is bolted to monolateral fixedly shape above-below direction three rank on the aforementioned pillar 94, be fixed with pedestal 96 in the door shape bottom of seedling platform pillar 94 simultaneously, pedestal 96 can freely be fixed on the pedal pillar 24 of side arm 17 arranged outside that form mainframe 16 with loading and unloading with bolt 97, above 25 the outside, seedling platform pillar 94 can uprightly be arranged on the pedal pillar 24 of supporting pedal 9 with freely taking out, on 25, the standby seedling platform 15 in the left and right sides is arranged on the machine outside of the pedal 9 of hood 10 both sides, take out standby seedling the seedling dish 95 outside the machine that is bearing in seedling platform pillar 94, to seedling carrying stand 11 supplies.

By as can be known above-mentioned, be arranged on the mainframe 16 by

pedal pillar

24,25 at pedal 9, cover the rice transplanter of mainframe 16 upsides by pedal 9, the loading supply is arranged on the

aforementioned pedal pillar

24,25 with the installation portion of the seedling platform pillar 94 of the standby seedling platform 15 of standby seedling, and seedling platform pillar 94 is installed on the pedal pillar 24,25.And, the

pedal pillar

24,25 that is also used as high rigid element, and seedling platform pillar 94 is set uprightly, come expendable weight and reduce manufacturing cost by the number of components of reduction installation seedling platform pillar 94 and the quantity of assembling procedure, support the load of standby seedling platform 15 simultaneously by the rigidity of pedal 9, become structure favourable on intensity, can realize simplifying the housing construction that standby seedling platform 15 is installed.

Moreover, as shown in figure 26, on aforementioned pedestal 96, form vertical surface 98 and lodging face 99, make vertical surface 98 and

pedal column

24,25 top contact, and by bolt 97 permanent seats 96, seedling platform pillar 94 generally perpendicularly uprightly is provided with, seedling dish 95 can be installed carry out the rice transplanting operation, on the other hand, make lodging face 99 and

pedal

24,25 top contact, and by bolt 97 permanent seats 96, seedling platform pillar 94 is supported to hood 10 directions with toppling over, reducing the overall height of body, and can be loaded on the loading stage of two stepwises up and down of truck and transport, or be accommodated in the narrow and small tool room.

By as can be known above-mentioned, adopt the seedling platform pillar 94 and the supporting mass 96 of its base portion to form the structure of one, seedling platform pillar 94 can be to the fixing obliquely structure of this machine direction, by seedling platform pillar 94 is single part, can reduce the quantity of parts, there is not joint gap on the connecting bridge of parts, and by seedling platform pillar 94 is fixing obliquely to this machine inboard, reduced the maximum height of this machine, when originating firm dispatches from the factory or when being received into tool room etc., standby seedling platform 15 can be packed up, can cut down the transported on trucks funds and guarantee accommodation space.

Claims

1. a rice transplanter is characterized by, and the vehicle frame that constitutes body is divided into these three parts of front frame, middle vehicle frame and rear portion vehicle frame.

2. according to the described rice transplanter of claim 1, it is characterized by, on middle vehicle frame, be connected with front bearing box.

3. according to claim 1 or 2 described rice transplanters, it is characterized by, the basal area of front frame forms greater than vehicle frame ground, rear portion, and engine mounting is forwardly on the vehicle frame simultaneously.

4. a front and back wheel, driving engine and driver's seat are installed in the rice transplanter on the mainframe of the left and right sides, it is characterized by, and the width that is provided with of left and right sides mainframe forms greater than the width ground, the left and right sides of driving engine, sees that from the side the driving engine bottom is overlapped on the mainframe.

5. according to the described rice transplanter of claim 4, it is characterized by, the both sides of rack unit that the antivibrating parts of supporting engine can be housed are fixed on the mainframe of the left and right sides.

6. according to the described rice transplanter of claim 5, it is characterized by, gearbox body is fixed on the rack unit.

7. according to the described rice transplanter of claim 5, it is characterized by, at the substantial middle fixed frame parts and the gearbox body of the installation width of left and right sides antivibrating parts.

8. rice transplanter that by the pedal pillar pedal is set on mainframe and covers the mainframe upside by pedal, it is characterized by, on aforementioned pedal pillar, be provided with and load the installation portion of supply, seedling platform pillar is installed on the pedal pillar with the seedling platform pillar of the standby seedling platform of standby seedling.