CN1714009A

CN1714009A - Working vehicle

Info

Publication number: CN1714009A
Application number: CNA2003801040078A
Authority: CN
Inventors: 井上诚
Original assignee: Yanmar Agricultural Equipment Co Ltd
Current assignee: Yanmar Power Technology Co Ltd
Priority date: 2002-12-19
Filing date: 2003-12-19
Publication date: 2005-12-28
Anticipated expiration: 2023-12-19
Also published as: KR20050085097A; JP2004199447A; CN100532149C; KR100773040B1; CN1328940C; KR101050371B1; JP4088920B2; KR20060127418A; CN1931623A; WO2004056603A1

Abstract

The invention aims to quietly and effectively drive an engine to perform efficient work by surely reducing the rotational frequency of the engine in a low working speed at traveling or the like or in a stop state of a working vehicle such as a planting machine in which a speed change gear for changing working speed such as vehicle speed is driven by the output of the engine. The working vehicle is provided with the speed change gear 48 which is driven by the output of the engine 2 to change the working speed, and a working speed operating member 30 for performing the speed changing operation of the speed change gear 48 is interlocked with an engine rotation changing member 87 for changing the rotational frequency of the engine 2 through an interlocking member 88.

Description

Operation Van

Technical field

The present invention relates to for example to have seedling carrying base and rice shoot the plant rice transplanter or the Operation Vans such as trac. or combination machine of the pawl and the operation of planting seedlings continuously.

Background technology

In the prior art, oil pressure endless gearing mechanism (HST) that use is made of capacity variable type oil pressure pump and the oil hydraulic motor technology as the walking transmission system of rice transplanter is arranged, the bar that is used to operate this transmission system only makes the swash plate angle change of speed-changing mechanism.(for example, No. 2979580 communique of Japan's special permission)

For common rice transplanter, the high speed position of the accelerator rod (ア Network セ Le レバ one) of change engine revolution when operation, make speed of a motor vehicle change by variable speed operation variable speed operation bar, but when continuing seedling, even the variable speed operation bar is operated center position body is stopped, as long as from getting back to low-speed position at a high speed, engine revolution can not carried out quietly operation to accelerator rod with regard to also keeping fast state.In addition, when engine revolution is lower-speed state under the fast state of stepless speed changing mechanism, probably can become the not enough state of output, or all be in fast state and when making clutch engagement in stepless speed changing mechanism and engine revolution, the danger that exists body to set out suddenly.

Summary of the invention

The present invention has with driving engine output and drives and make the variable-speed motor of operating speed speed change, make variable-speed motor is carried out the operation variable-speed operation parts of variable speed operation and the driving engine revolution change parts of change engine revolution are connected by linking parts, so, for example low speed walking or when stopping, make engine revolution also one be decided to be lower-speed state, can make driving engine quiet and drive effectively and carry out good working.

In addition, driving engine revolution alter operation parts with alter operation driving engine revolution change parts, when driving engine turns round the alter operation parts for low-speed handing, the operation variable-speed operation parts is preferentially operated, simultaneously, when driving engine revolution alter operation parts are operated for high speed H, driving engine revolution alter operation parts are preferentially moved than operation variable-speed operation parts, so, can correctly be altered to only operating speed (walking) pattern corresponding to the various job statuses such as the Tian Shi that deviates to wet that need low-speed high-torque, improve operation.

In addition, by two strands of metal filaments driving engine being turned round alter operation parts and operation variable-speed operation parts is attached on the driving engine revolution change parts, simultaneously, between operation variable-speed operation parts and metal filament, elastic body is set, so, can make the operational stroke of the operational stroke of operation variable-speed operation parts side by having used elastomeric simple mechanisms such as metal filament and spring greater than driving engine revolution alter operation component side, prevent to operate deviation, make operating speed can carry out speed change with normally stable engine revolution, can improve the reliability of operation.

Description of drawings

Fig. 1 is the whole lateral plan of rice transplanter;

Fig. 2 is the overall plan view of rice transplanter;

Fig. 3 is the whole front elevation of rice transplanter;

Fig. 4 is the lateral plan of car body;

Fig. 5 is the planar view of car body;

Fig. 6 is the block diagram of driving engine portion;

Fig. 7 is the lateral plan of driving engine portion;

Fig. 8 is the planar view of driving engine portion;

Fig. 9 is the front elevation of driving engine portion;

Figure 10 is the perspective illustration of driving engine portion;

Figure 11 is the perspective illustration of driving engine portion;

Figure 12 is the section instruction diagram of hood portion;

Figure 13 is the plane instruction diagram of hood portion;

Figure 14 is the instruction diagram of engine cooling portion;

Figure 15 is the front instruction diagram of hood portion;

Figure 16 is the instruction diagram of engine throttle portion;

Figure 17 is the instruction diagram of gear shift pedal portion;

Figure 18 is the instruction diagram of two bursts of metal filament portions;

Figure 19 is the instruction diagram of metal filament connecting portion;

Figure 20 is the block diagram of fixed frame portion;

Figure 21 is the block diagram of fixed frame portion;

Figure 22 is the other instruction diagram of two bursts of metal filament portions.

The specific embodiment

Below, based on accompanying drawing embodiments of the invention are elaborated.Fig. 1 is the single-piece lateral plan, Fig. 2 is its planar view, Fig. 3 is its front elevation, Fig. 4 is the lateral plan of car body, and Fig. 5 is its planar view, and 1 for taking advantage of the walking car that carries the operator among the figure, air cooled engine 2 carries on car body framework 3, by front bearing box 5 the paddy field walking is supported on change speed gear box 4 sides with front-wheel 6, simultaneously, the paddy field walking is supported on the rear axle casing 7 at above-mentioned change speed gear box 4 rears with trailing wheel 8.And, preparation seedling carrying base 10 is installed in hood 9 both sides that cover above-mentioned driving engine 2 grades, simultaneously, to take advantage of the car body lid 11 that carries the operator to hide above-mentioned change speed gear box 4 etc., by mounting 12 operator's saddle 13 is installed in above-mentioned car body and covers 11 back side top, steering tiller 14 is arranged on above-mentioned hood 9 rear portions in the place ahead of this operator's saddle 13.

In addition, 15 for having the plant portion of planting of pawl 17 etc. of the seedling carrying base 16 of eight usefulness of planting and a plurality of rice shoot among the figure, reciprocatingly slide freely by lower guide 18 and upper rall about 19 the low plastic FC seedling carrying base 16 in preceding high back is supported on planting box 20, simultaneously, to be supported on above-mentioned planting box 20 towards the rotating rotary box 21 of a direction constant speed, revolution axle center with this case 21 is that middle heart sets a pair of

pawl case

22,22 in symmetric position, at this

pawl case

22,22 front ends

rice shoot pawl

17,17 of planting is installed.

In addition, lifter drawing bar mechanism 26 by comprising top rod 24 and lower link 25 is connected to walking car 1 rear side with the connection carriage 23 of above-mentioned planting box 20 front sides, to the oil pressure lift cylinders 27 of the portion's of planting 15 liftings be connected on the lower link 25 by above-mentioned drag link mechanism 26, driving above-mentioned front and

back wheel

6,8 walking ground moves, simultaneously, by plant pawl 17 with rice shoot one strain one strain ground from about the seedling carrying base 16 that reciprocatingly slides take out, plant the field of seedling continuously and plant operation.

In addition, 28 is main transformer speed control lever among the figure, the 29th, and the plant control lever of planting of joint separation flags operation of power-transfer clutch of the lifting of the portion 15 of planting, 30 is gear shift pedal, and 31 is accelerator rod, and 32 is unit clutch lever (ユニ Star ト Network ラ Star チレバ one).

In addition, 33 is two level land center floating drums of central authorities among the figure, 34 be about two level land side floats, 35 is level land auxiliary buoy of left and right sides outermost, and 36 do eight of ditch device (not shown) for the side slat that the fertilizer in the fertilizer hopper 37 is discharged to each

floating drum

33,34,35 with the air-supply power of supply ventilating fan 38 uses the side slat fertilizer applicator.

As Fig. 4 extremely as shown in Figure 5, above-mentioned car body framework 3 is split into anterior framework 39,

intermediate frame

40,41 3 parts of rear portion framework, on the anterior framework 39 of pair of right and left, driving engine 2 is set, front bearing box 5 is set on pair of right and left intermediate frame 40, rear axle casing 7 is set on pair of right and left rear portion framework 41 and supplies the fuel to Fuel Tank 42 of driving engine 2 etc., so, forwardly framework 43 and pedestal 44 link before the front side of framework 39 and the middle chien shih, the plane is watched and is formed the square frame shape, by vibration-proof rubber 46 driving engine 2 is positioned on the analog bracket 45 and pedestal 44 of anterior framework 39.

In addition, front, left side at above-mentioned change speed gear box 4 is provided with power steering case 47, and stepless oil pressure variable-speed motor (HST) 48 is set on the right side of case 4, the speed change input that makes oil pressure variable-speed motor 48 with pump shaft 49 to car body the place ahead to outstanding, lower right side at driving engine 2 is connected to pump shaft 49 on the transmission shaft 50 of fore-and-aft direction, simultaneously, above-mentioned transmission shaft 50 is connected in the output shaft 51 of driving engine 2, the output of driving engine 2 is delivered on the oil pressure variable-speed motor 48 by drive belt 52.

In addition, on the line of centers of the fore-and-aft direction of car body, binding framework 53 by tubulose links above-mentioned change speed gear box 4 and rear axle casing 7 one, make walking output shaft 54 and PTO output shaft 55 protrude in change speed gear box 4 rears, above-mentioned walking output shaft 54 is attached on the back input shaft 56 that protrudes in rear axle casing 7 the place aheads by rear propeller shaft 57, power is delivered on the left and right sides trailing wheel 8 from walking output shaft 54.In addition, above-mentioned PTO output shaft 55 is attached on the tween drive shaft 59 that is arranged at rear axle casing 7 upper bearings 58 by axis of the gimbal 60, tween drive shaft 59 is attached on the input shaft of above-mentioned planting box 20 by axis of the gimbal, power is delivered to the portion of planting 15 from PTO output shaft 55.

To as shown in Figure 14, the noise silencer 62 of driving engine 2 is installed in ladder platform 61 downsides of anterior framework 39 left-external sides as Fig. 6, simultaneously, the battery platform 65 of the battery 64 that makes driving engine 2 startings is installed on the framework 39 right lateral ladder platforms 63 forwardly.

In addition, in the fan case 66 of above-mentioned driving engine 2 rear sides, set cooling fan of engine 67, offer cooling air in fan case 66 back substantial middle and be taken into mouth 68, be taken into 68 in mouth at this and establish Air Filter 69, in the longitudinal type mode oil cooler 70 of engine oil transmission oil variable-speed motor (HST) wet goods is adapted to the strip of growing crosswise being taken into mouthfuls 68 rear position, by erecting bed 71 and adapter plate 72 oil cooler 70 is linked the handle post 73 that is supported on steering tiller 14, need not be provided with in addition oil cooler 70 special uses cooling fan utilize 67 pairs of oil coolers of cooling fan of engine 70 to carry out forced cooling, can improve the cooling performance of oil cooler 70, realize the assembling of the small compact of oil cooler 70.

In addition, cover the back side top of above-mentioned driving engine 2 with the lid 74 of cubic box shape, the air filter 75 of driving engine 2 is provided in covers 74, make the filter chamber 77 of covering in 74 be communicated in fan room 76 in the said fans case 66, simultaneously, the top, front side of 78 covering engines 2 is covered in the air draft that is seen as a shape with anterior view, on the lid 78 inboard cooling, air discharging roads 79 that are communicated with filter chamber 77 that form, also as shown in figure 15, be discharged to the outside by the cooling air of air draft road 79 after at the exhaust outlet 80 of hood 9 front openings with filter chamber 77 circulation, the temperature that suppresses filter chamber 77 rises, thereby realizes the output rising of driving engine 2 and the raising of rate of fuel consumption amount by send into cold air to carburetter.Said exhaust mouth 80 is provided in the top of the ladder 11a of car body lid 11, prevents the damage of rice shoot from the air draft of exhaust outlet 80 with also can not touching rice shoot in the furrow.

In addition, as shown in figure 10, mono-deflector shield 81 is provided in driving engine 2 front sides, described deflector shield 81 makes from the left and right sides of above-mentioned driving engine 2 forwards to hot blast (engine cooling wind) interflow that circulation is discharged and to its channeling conduct downwards, deflector shield 81 fronts watch be L font ground have make from about the 81a of interflow portion at wind interflow, gather the left side with the wind that will collaborate and it is discharged the below discharge portion 81b of guiding downwards, form the shape of the upside corner part 3 (go up the place ahead, the left and right sides to) of the 81a of interflow portion by the guide surface 81c that constitutes the obtuse angle respectively, with the 81a of interflow portion the hot blast after driving engine 2 circulates is successfully collaborated, simultaneously, discharge downwards well from the discharge orifice 82 of discharge portion 81b downside, the discharge efficient of hot blast is improved.In addition, be the spatial portion 83 that is equipped on compactly on the inboard that is formed on 81a of interflow portion and discharge portion 81b with above-mentioned output shaft 51 and drive belt 52, can easily realize the miniaturization of body.

In addition, because the electric installing components 84 such as relay relevant with driving engine 2 is provided in above-mentioned

lid

74,78 tops, freely electric installing component 84 is installed on the framework 85 that links preceding framework 43 and handle post 73 etc. by electric erecting bed 86 dismountings, electric installing component 84 is set driving engine 2 above near in the structure of position, the heat that has also reduced driving engine 2 is directly delivered to electric installing component 84 first-class negative effects, simultaneously, also reduce the unfavorable condition that heat that electric installing component 84 produced is delivered to air filter 75, realized the stable maintenance of electric installing component 84 and air filter 75 both sides' performances (quality).

Extremely shown in Figure 180 as Figure 16, the throttling rod 87 of driving engine 2 is provided in said exhaust covers 78 lower position, acceleration metal filament (ア Network セ Le ワイヤ) 88 by two strands of shapes is connected throttling rod 87 in accelerator rod 31 that is provided in steering tiller 14 right sides and the gear shift pedal 30 that is provided in accelerator rod 31 lower positions, will speed up two gangs of 88a of metal filament portion of metal filament 88, the 88b front end is attached on gear shift pedal 30 and the accelerator rod 31, simultaneously, the single metal filament 88c of portion front end is attached to throttling rod 87, all variable engine revolution of any operation of gear shift pedal 30 and accelerator rod 31.

In addition, above-mentioned gear shift pedal 30 is linked to pedal shaft 89 freely by pedal arm 90 swings, on pedal shaft 89, fixedly install variable speed operation cam 91, operation of cam 91 is attached on the actuating spindle 92 of the swash plate angle of regulating above-mentioned oil pressure variable-speed motor 48 (oil pressure pump) by shifter bar 93, have the speed that recess pawl 95 is engaged with the recess 94 of operation of cam 91 and keep, when the operated by foot of gear shift pedal 30, rotate actuating spindle 92 ground the speed of a motor vehicle is carried out speed change with cam 96.

In addition, be attached on the above-mentioned pedal arm 90 by the exterior tube 98 of external support 97 88a of metal filament portion, simultaneously, with elastic body, be the distolateral 88a of a metal filament portion front end that is attached to of spring 99, on the distolateral fixed frame 101 that is attached to the cardinal extremity turning cylinder 100 that gear shift pedal 30 is installed of another of spring 99, when the operated by foot of gear shift pedal 30, exterior tube 98 is moved relative to metal filament portion 88a (inner wire), throttling rod 87 is operated, carried out the change of the speed change and the engine revolution of the speed of a motor vehicle.

In addition, as shown in figure 19, the 88b of metal filament portion that is linked to accelerator rod 31 is attached to latch for printed circuit 103 on the arm 102 with bar 31 one, two 88a of one metal wire portion with gear shift pedal 30 and accelerator rod 31, another of 88b is distolateral to be attached on the mono-union body 104, above-mentioned union body 104 is inserted into sliding freely and each 88a of metal filament portion, the exterior tube 98 of 88b, in 105 attaching partss 106 that link, when above-mentioned gear shift pedal 30 is NOT operation with accelerator rod 31 (0 position), make each 88a of metal filament portion, 88b loosely remains in union body 104 dotted line position of Figure 19, simultaneously, when the operation with gear shift pedal 30 or accelerator rod 31 makes either party's 88a of metal filament portion or 88b become tensioning state, shown in this figure realization state, make union body 104 in attaching parts 105, move certain stroke L, the single metal filament 88c of portion of tensioning, operation throttling rod 87 is to high speed H side.

Like this, at the driving engine revolution variable-speed operation parts of operation throttling rod 87, be that accelerator rod 31 is 0 or makes the 88b of metal filament portion operational priority gear shift pedal 30 loosely during low-speed handing, simultaneously, when operating for high speed H, accelerator rod 31 make union body 104 to high-speed side shift motion L, have precedence over gear shift pedal 30, so, can correctly be altered to only operating speed (walking) pattern corresponding to the various job statuses such as the Tian Shi that deviates to wet that need low-speed high-torque, improve operation.

Shown in Figure 20,21, said fixing framework 101 is fixed on the front and back end between the installing component 108 of the analog bracket 107 of anterior framework 39 rear ends and rear portion framework 41 front ends, by turning cylinder 100 the cardinal extremity swing of gear shift pedal 30 is supported on the brow landing 109 that is fixedly installed on above the fixed frame 101 freely.

In addition, as shown in figure 22, also can metal filament 88a directly be attached on aforesaid operations cam 91 or the pedal arm 90 by spring 99.

Also can recognize by foregoing, has the oil pressure variable-speed motor (HST) 48 that makes operating speed speed changes such as the speed of a motor vehicle with driving engine 2 outputs drivingly, link by throttling rod 87 interlocks that will turn round the change parts as the acceleration metal filament 88 that links parts as the driving engine that engine revolution is changed in the gear shift pedal 30 and the conduct of the operation variable-speed operation parts that variable-speed motor 48 is carried out variable speed operation, thereby for example engine revolution also one is decided to be lower-speed state in low speed walking or when stopping, can make driving engine quiet and drive efficiently and carry out good working, so, automatically carry out quiet operation when continuous seedling operation etc., in addition, at variable-speed motor 48 is high speed H, the driving engine revolution can prevent also when being low speed that driving engine 2 from becoming the unfavorable condition of the not enough state of output, and then when setting out or when stopping, can carry out also setting out smoothly or stop of engine revolution with walking for lower-speed state.

In addition, will speed up bar 31 and gear shift pedal 30 is attached on the throttling rod 87 by two strands of metal filaments 88, simultaneously, between gear shift pedal 30 and metal filament 88, be provided as elastomeric deviation and prevent spring 99, thereby make the operational stroke of the operational stroke of gear shift pedal 30 sides greater than accelerator rod 31 sides with the simple mechanism that has used metal filament 88 and spring 99, prevent the deviation of operating, the speed change of can normally stable engine revolution carrying out operating speed, improve the reliability of operation, so can carry out gear shift pedal 30 and accelerator rod 31 all are set to the good high speed operation of high speed position fully.

Claims

1. Operation Van, it is characterized in that, have with driving engine output and drive and make the variable-speed motor of operating speed speed change, the driving engine revolution change parts interlock of operation variable-speed operation parts that variable-speed motor is carried out variable speed operation and change engine revolution is linked up by linking parts.

2. Operation Van as claimed in claim 1, it is characterized in that, driving engine revolution alter operation parts with alter operation driving engine revolution change parts, operational priority operation variable-speed operation parts when the low-speed handing of driving engine revolution alter operation parts, simultaneously, when the high speed operation of driving engine revolution alter operation parts, preferentially operate driving engine revolution alter operation parts than operation variable-speed operation parts.

3. Operation Van as claimed in claim 2, it is characterized in that, by two strands of metal filaments driving engine is turned round alter operation parts and operation variable-speed operation parts and be attached on the driving engine revolution change parts, simultaneously, between operation variable-speed operation parts and metal filament, elastic body is set.