CN1930938B - Riding type irrigated field operating machine - Google Patents
Riding type irrigated field operating machine Download PDFInfo
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- CN1930938B CN1930938B CN200610071532XA CN200610071532A CN1930938B CN 1930938 B CN1930938 B CN 1930938B CN 200610071532X A CN200610071532X A CN 200610071532XA CN 200610071532 A CN200610071532 A CN 200610071532A CN 1930938 B CN1930938 B CN 1930938B
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Abstract
Based on existed technical problems, the invention provides a riding type irrigated field operating machine capable of advancing smoothly on concavo-convex advancing surface. The riding type irrigated field operating machine comprises: a machine body having a pair of main frames (21) which are disposed on left and right side of the body and are extended forwardly and backwardly, a pair of front wheels (1) disposed on left and right side of front part of the machine body and a back axle box (28) arranged on the back of the machine body and provided with a pair of back wheels (2) positioned on the left and right side of the back axle box. In this riding type irrigated field operating machine, the back axle box (28) is elastically supported on the machine body through a pendant structure, and, the back axle box (28) is asway supported on the machine body through a pair of left/right top connecting-rods (29) and a pair of left/right bottom connecting-rods(30).
Description
Technical field
The present invention relates to a kind of riding-type paddy field work machine, it possesses: have the pair of right and left main frame that extends along fore-and-aft direction body, be arranged on this body the front portion the pair of right and left front-wheel and be configured in the rear portion of above-mentioned body and have the back axle case of pair of right and left trailing wheel.
Background technology
Riding-type paddy field work machine need suppress rocking of body and vibrate and stably advance in concavo-convex violent field.In order to satisfy this requirement, various wheel support structures have been studied.
Representational wheel support structure as riding-type paddy field work machine for example has configurations: by the gearbox supporting left and right sides front-wheel of the front portion that is fixed on body, and by the back axle case supporting left and right sides trailing wheel that can unsteadily be bearing in After-Body.
According to this structure, the left and right sides difference in height in the field of advancing for trailing wheel, transmission case capable of using wave absorption.Therefore, can prevent to tilt significantly about body.
But, when left and right sides trailing wheel is advanced simultaneously, can not absorb then according to above-mentioned wheel support structure that this is concavo-convex on the recess in field or protuberance.Therefore, the organism rear portion problem of sinking significantly or rising sometimes.
Summary of the invention
The present invention makes in view of the above problems, and its objective is provides a kind of riding-type paddy field work machine that can stably on irregular running face, advance.
The 1st characteristic of the present invention constitutes; Be a kind of riding-type paddy field work machine, possess: have the upwardly extending pair of right and left main frame in front and back body, be arranged on this body the front portion the pair of right and left front-wheel and be configured in the rear portion of above-mentioned body and have the back axle case of pair of right and left trailing wheel, in this riding-type paddy field work machine; Above-mentioned back axle case via the suspension fork mechanism elastic bearing in above-mentioned body; And, be provided with strengthening part in the front portion of above-mentioned main frame, have above-mentioned back axle case is linked to connecting rod and pair of right and left lower link on the pair of right and left of above-mentioned body; Each above-mentioned end of going up the above-mentioned body side of connecting rod is supported on above-mentioned main frame with the mode that can swing; And the end of the above-mentioned body side of each above-mentioned lower link is supported on above-mentioned strengthening part with the mode that can swing, and then; With respect to above-mentioned back axle case; Above-mentioned suspension fork mechanism is positioned at front side, and lower swing mode freely is supported in the heart with the antero posterior axis around the rear end of above-mentioned main frame for cross bar, and above-mentioned cross bar lower swing mode freely is supported in the heart with the antero posterior axis around the rear portion of above-mentioned back axle case.
Constitute according to this, the back axle case is bearing on the body with the mode that can swing via suspension fork mechanism.Therefore, even for example under irregular situation on the running face, the back axle case also can be concavo-convex and swing corresponding to it, and trailing wheel is cooperating concavo-convex and swinging as a result.Thereby can prevent the vibration and the inclination of body, so even concavo-convex violent field, riding-type paddy field work machine also can stably be advanced.
As the back axle case being bearing in the formation on the body with the mode that can swing, for example can consider the formation shown in following through last connecting rod and lower link.That is, for example will go up connecting rod the body side the end with the mode that can swing be bearing on the main frame, with the overhang bracket of the body side of lower link in the formation of being located on the gearbox of front part of vehicle.According to this formation, because lower link is bearing on the gearbox, so sometimes gearbox is applied excessive load.
But, through as this formation, lower link being bearing on the strengthening part, compare with the situation that above-mentioned that kind is bearing on the gearbox, can reduce the load that is applied on the gearbox.As a result, even the riding-type paddy field work machine that irregular running face also can stably be advanced and durability is good can be provided.
The 2nd characteristic of the present invention constitutes; Second strengthening part that above-mentioned strengthening part has pair of right and left first strengthening part that extends from the above-mentioned main frame of pair of right and left downwards and is provided with across the bottom of above-mentioned first strengthening part of pair of right and left and above-mentioned first strengthening part of pair of right and left is linked, the end of the above-mentioned body side of each above-mentioned lower link is supported on above-mentioned first strengthening part with the mode that can swing.
The 3rd characteristic of the present invention constitutes, the elastic force when above-mentioned suspension fork mechanism can be adjusted above-mentioned elastic bearing.
Through as this formation, constituting the elastic force that to adjust suspension fork mechanism, can adjust elastic force according to the concavo-convex situation of running face, so can more stably advance.
The 4th characteristic of the present invention constitutes, and above-mentioned body has gearbox, and this gearbox is linked to above-mentioned main frame and above-mentioned first strengthening part and second strengthening part.
According to this formation, the main frame and the gearbox that constitute body firmly fix via strengthening part, so can provide durability better riding-type paddy field work machine.
In above-mentioned riding-type paddy field work machine, possess and for example drive the hydraulic cylinder that the rice shoot cultivation device goes up and down and the electronic-controlled power steering mechanism of fluid pressure type, and possess working oil is supplied to the hydraulic pump in hydraulic cylinder and the electronic-controlled power steering mechanism.
In this case, following structure is arranged: the front portion at body possesses gearbox, possesses hydraulic pump in the outside of the front side of gearbox, and the power that is attached at the driving shaft on the hydraulic pump is via the driving-belt transmission.
Under situation about driving shaft being connected on the hydraulic pump, generally more through the situation of spline connection, need implement fully to lubricate to the spline part that connects hydraulic pump and driving shaft.Possess in the outside of gearbox under the situation of driving shaft, on the spline part that connects hydraulic pump and driving shaft, also apply lubricating grease.
The 5th characteristic of the present invention constitutes; The rear portion of above-mentioned gearbox is arranged between above-mentioned main frame of pair of right and left and pair of right and left first strengthening part; Horizontal sidepiece is installed on above-mentioned main frame and above-mentioned first strengthening part about the rear portion of above-mentioned gearbox; And the back side at the rear portion of above-mentioned gearbox is installed on above-mentioned second strengthening part.
But; Spline part at driving shaft or connection hydraulic pump and driving shaft is to escape under the situation of outside state; If the lubricating grease evanescence not enough at the spline part place lubricating grease that connects hydraulic pump and driving shaft, then might wear and tear rapidly at the spline part that connects hydraulic pump and driving shaft.Thus, need supplemental lubrication fat continually.It is the scheme that except above-mentioned problem, also solves this problem that the 6th characteristic of the present invention constitutes.
Promptly; The 6th characteristic of the present invention constitutes, and possesses gearbox in the front portion of above-mentioned body, possesses hydraulic pump at a horizontal sidepiece of above-mentioned gearbox; The driving shaft that is connected in above-mentioned hydraulic pump extends to another horizontal sidepiece of gearbox along left and right directions in the inside of above-mentioned gearbox; The power of engine is delivered to driving shaft from another horizontal sidepiece of above-mentioned gearbox, and, possess control crank at the upside of above-mentioned gearbox; The steering spindle that interlock is linked to above-mentioned control crank connects configuration in the inside of above-mentioned gearbox near above-mentioned driving betwixt mountains along the vertical direction, by above-mentioned control crank via steering spindle freely to the capable steering operation of left and right sides front-wheel.
Constitute according to this characteristic, driving shaft and the spline part that is connected hydraulic pump and driving shaft are configured in the inside of gearbox.Gearbox with big volume generally is full of lubricating oil and oil bathization in inside.Therefore, through as this formation with driving shaft and connect hydraulic pump and the spline part of driving shaft is configured in the inside of gearbox, driving shaft and the spline part that connects hydraulic pump and driving shaft are lubricated by lubricating oil fully.Thereby the spline part that can not connect hydraulic pump and driving shaft is exposed to the such situation of outside lubricating grease (lubricating oil) evanescence.
In addition, in riding-type paddy field work machine, following structure is arranged: the upside at gearbox possesses control crank, via freely left and right sides front-wheel being carried out steering operation with the steering spindle of control crank interlock binding.Constitute according to this, steering spindle is connected configuration in the inside of gearbox with the mode that approaches driving shaft along the vertical direction.Like this, through the driving shaft of left and right directions and the steering spindle of above-below direction are disposed with reporting to the leadship after accomplishing a task, can in the mutual interference of the bearing of avoiding supporting driving shaft and the bearing of supporting steering spindle, driving shaft and steering spindle closely be disposed.
The result of such scheme, the spline part of driving shaft and connection hydraulic pump and driving shaft can lubricate by hard to bear lubricating oil fully.Therefore, the wearing and tearing of the spline part of hydraulic pump and driving shaft can be suppressed to connect, the durability of working in paddy field can be improved.
In addition, can above-mentioned driving shaft and steering spindle closely be disposed, can reduce space useless between driving shaft and the steering spindle.Therefore, be favourable aspect the densification of gearbox.
Description of drawings
Fig. 1 is the end view of an example (riding type rice transplanter) of expression riding-type paddy field work machine of the present invention.
Fig. 2 is the vertical view of expression to the transmission system of trailing wheel transmission.
Fig. 3 is the end view of the supporting construction of expression back axle case.
Fig. 4 is the vertical view of the supporting construction of expression back axle case.
Fig. 5 is near the front view the back axle case.
Fig. 6 is near the vertical profile front view the front-wheel support.
Fig. 7 is the details drawing of the supporting construction of expression back axle case.
Fig. 8 is the figure of the interim assembling of expression suspension fork mechanism.
Fig. 9 is near the front view the expression strengthening part.
Figure 10 is the cross-sectional vertical view of gearbox.
Figure 11 is the vertical profile end view of the front portion of gearbox.
Figure 12 is the vertical profile front view of the front portion of gearbox.
Figure 13 is near the cross-sectional vertical view of output shaft of gearbox.
Figure 14 is the vertical profile vertical view of front portion of gearbox of the 1st other embodiments of invention.
Embodiment
(summary of riding type rice transplanter)
Fig. 1 representes the riding type rice transplanter as an example of riding-type paddy field work machine of the present invention.At the rear portion of the body that possesses left and right sides front-wheel 1, left and right sides trailing wheel 2, possess the hydraulic cylinder 4 that linkage 3 and drive link mechanism 3 go up and down, rice shoot cultivation device 5 at the rear support of linkage 3.
As shown in Figure 1, rice shoot cultivation device 5 possesses: transmission case 6, rotation drive the plantation case 7 at the rear portion be bearing in transmission case 6 freely, a pair of plantation arm 8 that is provided in the two ends of plantation case 7, ground connection float 9, and rice shoot carry and put platform 10 etc.Thus, along with about back and forth traverse feed drive rice shoot and carry and put platform 10, plantation case 7 is driven in rotation, plantation arm 8 carries the bottom of putting platform 10 from rice shoot and alternately takes out rice shoot and plant on the face of field.
As shown in Figure 1, hopper 12 and the unloading part 13 that stores fertilizer is fixed on drives 11 the rear side of attending a banquet, and possesses fan blower 14 at attend a banquet 11 downside of driving.On ground connection float 9, possess plough 15, between unloading part 13 and plough 15, be connected with flexible pipe 16.Thus, along with the plantation of above-mentioned rice shoot, see the fertilizer of ormal weight through unloading part 13 off from hopper 12, the air-supply through fan blower 14 makes fertilizer supply to plough 15 through flexible pipe 16, via plough 15 fertilizer is supplied on the face of field at every turn.
Be fixed with gearbox 17 in the front portion of body, engine 19 at supporting arm 18 upper supports of the front portion that is linked to gearbox 17.Main transformer quick-mounting by the hydraulic variable speed unit 33 (HST) with this engine 19 belts interlock constitutes is put the horizontal sidepiece that is attached at gearbox, and its speed change output is transfused to gearbox 17.In addition, the horizontal sidepiece in the side opposite with hydraulic variable speed unit 33 sides of gearbox 17 is provided with hydraulic pump 97.
The variable-speed dynamic that inputs to gearbox 17 is branched to advance system and operating system.As after state, branch's power of advance system passes to left and right sides front-wheel 1 via box of tricks 51 after by the secondary speed-changing device of gear type 46,47,49 height two-stages ground speed changes.In addition, the variable-speed dynamic behind secondary speed-changing device 46,47,49 is delivered to the back axle case 28 of After-Body, comes the trailing wheel 2 of drive shaft bearing in the left and right end portions of this back axle case 28.
(supporting construction of front-wheel and trailing wheel)
The supporting construction of left and right sides front-wheel 1, left and right sides trailing wheel 2 then is described.
Like Fig. 3 and shown in Figure 9, the left and right sides main frame 21 of cornue shape is along the fore-and-aft direction configuration, and the bottom of the front portion of main frame 21 in the left and right sides is linking strengthening part 20 through welding, between the bottom of strengthening part 20, is linking strengthening part 21a through welding.The rear portion of gearbox 17 enters between the front portion of left and right sides main frame 21, and enters between the strengthening part 20, and horizontal sidepiece about the rear portion of gearbox 17 is attached at the front portion of left and right sides main frame 21 through bolt 78, and is attached on the strengthening part 20.The back side portion at the rear portion of gearbox 17 is attached on the strengthening part 20a through bolt 79.
Like Fig. 1, Fig. 4, shown in Figure 6, extend front truck axle box 23 horizontal side from about the gearbox 17 in the left and right sides, on the end of left and right sides front truck axle box 23, has support 23a cylindraceous towards oblique front lower place (with reference to vertical axis P1).The front-wheel support 24 of supporting left and right sides front-wheel 1 is to be bearing on the support 23a of left and right sides front truck axle box 23 around vertical axis P1 rotation freely and along vertical axis P1 direction slip mode freely.Like Fig. 2, shown in Figure 3, steering arm 25 (example of turning member) is connecting pull bar 26 to be bearing in the bottom of gearbox 17 around vertical axis P8 swing mode freely and to extend back between above-mentioned front-wheel support 24 and steering arm 25.As shown in Figure 1, possess the control crank 27 of swinging operation steering arm 25, through by control crank 27 swinging operation steering arms 25, left and right sides front-wheel 1 is carried out steering operation.
Like Fig. 3, Fig. 4, shown in Figure 5, left and right sides trailing wheel 2 at back axle case 28 upper supports.The cross section is the front portion that the left and right sides carriage 22 of コ word shape and lengthwise is fixed on back axle case 28; About go up connecting rod 29 to swing up and down freely mode with the transverse axis heart P2 on the top of the carriage 22 around the left and right sides supported and forwards extend, and about to go up connecting rod 29 supported with the mode that the transverse axis heart P3 around the carriage 21a of the pars intermedia that is fixed in left and right sides main frame 21 swings up and down freely.
Like Fig. 3, Fig. 4, Fig. 5, shown in Figure 9; The bottom of carriage 22 is fixed with fulcrum post 31 towards lateral outer side in the left and right sides; Left and right sides lower link 30 swings up and down the supported and extension forwards of mode freely with the transverse axis heart P4 around fulcrum post 31; A structure of an essay is provided with bolster 80 in the bottom of strengthening part 20, and left and right sides lower link 30 is supported with the mode that the transverse axis heart P5 around the two ends of bolster 80 swings up and down freely.Be fixed with carrier 21b on the left and right sides main frame 21, carrier 32b down, between the carrier 32b of carrier 21b on the left and right sides main frame 21 and fulcrum post 31, be provided with left and right sides bearing spring 32a at fulcrum post 31 upper supports.Like Fig. 4, shown in Figure 5, cross bar 34 is supported with the mode that axle center, the front and back P6 around the rear end of left main frame 21 swings up and down freely, and cross bar 34 is supported with the mode that right back axle center, front and back P7 around back axle case 28 swings up and down freely.
The example of the suspension fork mechanism S of trailing wheel 2 is described here.Like Fig. 7, shown in Figure 8, suspension fork mechanism S possesses: be fixed in last carrier 21b on the main frame 21, be bearing in following carrier 32b on the carriage 22, be installed in bearing spring 32a between carrier 21b and the following carrier 32b, the elastic force adjusting unit 32c of the elastic force of adjustment bearing spring 32a.Following carrier 32b is a roughly コ font of cross section, at the partly upright circular pole member 32d in cross section that is provided with of the substantial middle at the back side of コ word, on the periphery of pole member 32d, is formed with screw thread.The back side of the plate member of elastic force adjusting unit 32c on general plane possesses plate member is bent to cross section roughly U word shape and the parts that form, on the substantial middle part of the plate member of U word shape, is provided with the hole portion that inserts logical pole member 32d.
In this suspension fork mechanism S, elastic force adjusting unit 32c, following carrier 32b and bearing spring 32a can assemble before being assembled on the body in advance temporarily, and interim assembling can be undertaken by following order.That is, bearing spring 32a is contained in upright being located at down on the pole member 32d on the carrier 32b outward, bearing spring 32a is carried put on following carrier 32b.Pole member inserted lead in the hole portion of elastic force adjusting unit 32c, with carrier 32b and elastic force adjusting unit 32c clamping bearing spring 32a down.Nut 32e is fastened on the pole member 32d,, adjusts the elastic force of bearing spring 32a through making down carrier 32b and elastic force adjusting unit 32c approaching.Like this, just can carry out the interim assembling of elastic force adjusting unit 32c, following carrier 32b and bearing spring 32a.In addition, owing to be provided with elastic force adjusting unit 32c, so can bearing spring 32a be adjusted into the elastic force of expectation.Then, elastic force adjusting unit 32c that will this interim assembly through for example bolt etc. is installed on the last carrier 21b of main frame 20, just can suspension fork mechanism be arranged between body and the back axle case 28.
Thus; Like Fig. 3, Fig. 4, shown in Figure 5; Back axle case 28 is supported by left and right sides bearing spring 32a with the mode that moves up and down and wave freely; Through about go up connecting rod 29, and left and right sides lower link 30 positions of decision back axle case 28 on fore-and-aft direction, through cross bar 34 positions of decision back axle case 28 on left and right directions.
(to the drive structure of front-wheel and trailing wheel transmission)
The drive structure of front-wheel 1 and trailing wheel 2 transmissions to the left and right then is described.
Like Fig. 1 and shown in Figure 4, linking hydrostatic formula stepless speed change device 33 in the front portion on the top of the left horizontal sidepiece of gearbox 17, the power of engine 19 passes to the power shaft 33a of hydrostatic formula stepless speed change device 33 via driving-belt 35.
Hydrostatic formula stepless speed change device 33 has neutral stop position, the side of marching forward freely and retreat the side infinitely variable speeds.Like Figure 10 and shown in Figure 11; The power shaft 33a of hydrostatic formula stepless speed change device 33 and output shaft 33b enter into the inside of gearbox 17; The roughly the same configuration of front and back (the power shaft 33a of hydrostatic formula stepless speed change device 33 is that the output shaft 33b of front side, hydrostatic formula stepless speed change device 33 is a rear side) to heavens; The power shaft 33a of hydrostatic formula stepless speed change device 33 is positioned at the top of the front portion of gearbox 17, and is approaching with the 17a of wall portion of the front of gearbox 17.
Like Figure 10 and shown in Figure 11, power transmission shaft 44 is bearing in the gearbox 17 via bearing 45 rotation freely, and the output shaft 33b of hydrostatic formula stepless speed change device 33 and power transmission shaft 44 are connected through spline.On power transmission shaft 44, be fixed with low-speed gear 46 and high gear 47, with the power transmission shaft 48 of power transmission shaft 44 configured in parallel on, through spline with rotation of power transmission shaft 48 one and the outer sliding freely shifted gear 49 that is embedded with.Thus, through slide shifted gear 49 itself and low-speed gear 46 and high gear 47 are meshed, the power of power transmission shaft 44 is passed to power transmission shaft 48 by height 2 grades of ground speed changes.
Like Figure 10 and shown in Figure 11; A pair of power transmission shaft 50 is disposed in butt joint between gearbox 17 and left and right sides front truck axle box 23; Between a pair of power transmission shaft 50, have box of tricks 51, the casing 51a of box of tricks 51 is bearing on the gearbox 17 via bearing 55 rotations freely.On power transmission shaft 48, be fixed with travelling gear 52, be fixed on travelling gear 53 and travelling gear 52 engagements on the casing 51a of box of tricks 51.
Shown in figure 10, cylinder part 54 is through rotation of key structure one and outer sliding freely being embedded on the power transmission shaft 50, possess slide cylinder part 54 operating axis 62, and the differential that links to each other with operating axis 62 lock pedal (not shown).Thus; When trampling operation differential locking pedal; Operating axis 62 is rotated operation; Cylinder part 54 is engaged on by slide on the end of casing 51a of box of tricks 51, so through cylinder part 54 is engaged on the end of casing 51a of box of tricks 51, can make box of tricks 51 become lock-out state.
On the support 23a of left and right sides front truck axle box 23, supporting bevel gear 68 (upside) and accepting parts 69 (downside) via bearing 67, bevel gear 68 and bevel gear 66 engagements that are fixed on the power transmission shaft 50.Power transmission shaft 70 with bevel gear 68 and accept the rotation of parts 69 one and install sliding freely, is fixed with bevel gear 71 in the lower end of power transmission shaft 70 through spline.
As shown in Figure 6, at the axletree 72 that possesses support right (left side) front-wheel 1 on the front-wheel support 24, be fixed on the bevel gear 73 on the axletree 72, be fixed with sleeve 74 cylindraceous in the upper end of front-wheel support 24.Front-wheel support 24 and sleeve 74 are bearing on the power transmission shaft 70 through bearing 75 rotation freely, between the support 23a of left and right sides front truck axle box 23 and sleeve 74, possess seal member 76, and bevel gear 71,73 meshes.Accept on the bearing 75 that parts 77 are connected to upside, accepting parts 69, between 77, possessing the two-layer bearing spring 40 in the inboard and the outside.
Thus, like Fig. 4, Fig. 6, shown in Figure 10, the power of hydrostatic formula stepless speed change device 33 passes to left and right sides front-wheel 1 via power transmission shaft 50,70 and axletree 72.Front-wheel support 24 with around vertical axis P1 rotation freely and the mode of sliding freely along the direction of vertical axis P1 supported, 40 pairs of front-wheel supports 24 of bearing spring work to the slip of vertical axis P1 direction.
The drive structure of 2 transmissions of trailing wheel to the left and right of back axle case 28 then is described.
Like Fig. 2, Fig. 3, Fig. 4, shown in Figure 10, possess the output shaft of advancing 56 in the bottom at the rear portion of gearbox 17, this output shaft 56 of advancing is outstanding towards the rear.Be fixed on bevel gear 57 and bevel gear 58 engagements that are equipped on the output shaft 56 of advancing on the casing 51a of box of tricks 51, give the output shaft 56 of advancing transmission of power.On the end of output shaft 56 of advancing, universal joint 64 is installed, power transmission shaft 59 is connected with universal joint 64 via cylinder joint 65 (transferring power is also allowed the slip of power transmission shaft 59 with respect to universal joint 64).In the front portion of back axle case 28, power shaft 38 is outstanding forward, and power transmission shaft 59 is connected via universal joint 64 with power shaft 38.
As shown in Figure 2, in back axle case 28, possess power transmission shaft 39, be fixed on bevel gear 38a and the bevel gear 39a engagement that is fixed on the power transmission shaft 39 on the power shaft 38.In the left and right end portions of power transmission shaft 39, possess the sidepiece clutch 41 of friction multiple-piece, between the axletree 43 of left and right sides sidepiece clutch 41 and supporting left and right sides trailing wheel 2, possess power transmission shaft 42.Like this, like Fig. 2 and shown in Figure 4, the power of hydrostatic formula stepless speed change device 33 is via the output shaft 56 of advancing, power transmission shaft 59, power shaft 38, power transmission shaft 39, left and right sides sidepiece clutch 41, power transmission shaft 42 and pass to left and right sides trailing wheel 2.
Shown in figure 10; In the inner wall portion of gearbox 17 with advance and possess a plurality of friction plates 60 between the output shaft 56; Discoid functional unit 61 is embedded on the output shaft 56 of advancing outside the rotation freely relatively; Possess the operating axis 63 of slide functional unit 61 and be connected the brake pedal (not shown) on the operating axis 63, brake pedal mechanically is connected with hydrostatic formula stepless speed change device 33.Thus, when trampling the operational brake pedal, hydrostatic formula stepless speed change device 33 is operated into neutral stop position, and operating axis 63 is rotated operation, and functional unit 61 is by slide, and functional unit 49 pushes friction plates 60, and the output shaft 56 of advancing is implemented braking.When the output shaft 56 of advancing is implemented braking, implement braking via box of tricks 51 and 50 pairs of left and right sides front-wheels of power transmission shaft 1,59 pairs of left and right sides trailing wheels of output shaft 56 and power transmission shaft 2 are implemented braking via advancing.
As shown in Figure 2, left and right sides sidepiece clutch 41 by spring (not shown) to the drive state application of force.Possess the left and right sides motion arm 36 that left and right sides sidepiece clutch 41 is operating as off-state, between steering arm 25 and left and right sides motion arm 36, connecting connecting rod 37.State shown in Figure 2 is with the state of left and right sides front-wheel 1 (steering arm 25) steering operation to in-line position A0.At this moment, be the state that left and right sides sidepiece clutch 41 is operated into drive state, power is delivered to left and right sides front-wheel 1, left and right sides trailing wheel 2.Even between in-line position A0 and the left and right sides set angle A1, also is above-mentioned state with left and right sides front-wheel 1 steering operation, body is kept straight on or is changed direction lentamente to the right or left.
As shown in Figure 2; If with left and right sides front-wheel 1 (steering arm 25) steering operation to the set angle A1 on right side and turning between the limit A2 of right side; Then pass through the draw operations of the connecting rod 37 on 25 pairs of right sides of steering arm; The sidepiece clutch 41 on right side is operating as off-state by the motion arm 53 on right side, and the trailing wheel 2 on right side becomes free rotation state.At this moment, the sidepiece clutch 41 in left side is keeping drive state, and power is delivered to the trailing wheel 2 in left side.If with left and right sides front-wheel 1 (steering arm 25) steering operation to the set angle A1 in left side and turning between the limit A2 of left side; Then pass through the draw operations of the connecting rod 37 in 25 pairs of left sides of steering arm; The sidepiece clutch 41 in left side is operating as off-state by the motion arm 53 in left side, and the trailing wheel 2 in left side becomes free rotation state.At this moment, the sidepiece clutch 41 on right side is keeping drive state, and power is delivered to the trailing wheel 2 on right side.
As stated; If turn to limit A2 between or the set angle A1 in left side and the turning to limit A2 between of left side to the set angle A1 on right side and right side left and right sides front-wheel 1 steering operation; Then under the state of the trailing wheel 2 outside transmission of power is given left and right sides front-wheel 1, turning; The power that transmits to the trailing wheel of turning center side 2 is disconnected, and the trailing wheel 2 of turning center side becomes free rotation state, carries out turning to the left or to the right.Thus, the trailing wheel of turning center side becomes on one side along with turning the state that suitably rotation is advanced on one side, and the situation of when turning, destroying the field face because of the trailing wheel of turning center side tails off.
(to the drive structure of rice shoot cultivation device transmission)
Drive structure to 5 transmissions of rice shoot cultivation device then is described in the gearbox 17.
Shown in figure 10; Travelling gear 81 cylindraceous is via one-way clutch 82 outer being embedded on the power transmission shaft 44; Give travelling gear 81 through one-way clutch 82 with the transmission of power of advancing of the output shaft 33b of hydrostatic formula stepless speed change device 33, and do not give travelling gear 81 with the transmission of power of retreating of the output shaft 33b of hydrostatic formula stepless speed change device 33 through one-way clutch 82.
Like Figure 10, Figure 11, shown in Figure 13, travelling gear 83 and 6 travelling gears 84 link with the mode of one rotation each other, and rotation is outer freely relatively is embedded on the power transmission shaft 48 travelling gear 81,45 engagements for travelling gear 83 and 6 travelling gears 84.On the power transmission shaft 85 that disposes abreast with power transmission shaft 48, be embedded with 6 change-speed gearings 86 outside the rotation freely relatively; 6 travelling gears 84 and change-speed gearing 86 mesh respectively, possess a change-speed gearing 86 of selecting in 6 change-speed gearings 86 and are attached to it on power transmission shaft 85 freely and remove the action bars 87 that links from it.Like this; Constitute speed change gear 88 between strain through 6 travelling gears 84 and change-speed gearing 86 and control stick 87 etc.; Through selecting a change-speed gearing 86 in 6 change-speed gearings 86 by action bars 87 and be attached on the power transmission shaft 85, and pass to power transmission shaft 85 after 6 grades of ground of the power speed change with power transmission shaft 48.
Shown in figure 13, possess output shaft 89 on the top at the rear portion of gearbox 17, this output shaft is rearward outstanding, relatively the outer freely bevel gear 90 and bevel gear 91 engagements that are fixed on the power transmission shaft 85 that is embedded on the output shaft 89 of rotation.Shifting part 92 is through rotation of spline one and outer sliding freely being embedded on the output shaft 89; Possess to shifting part 92 to the spring 93 of the side application of force of bevel gear 90 engagement; Possess operation shifting part 92 and make its action bars 94 that leaves from bevel gear 90, thereby constitute the plantation clutch 95 of freely transmission of power of power transmission shaft 85 being given output shaft 89 and being broken off the power of power transmission shaft 85.Like Fig. 1 and shown in Figure 13, between the power shaft (not shown) of output shaft 89 and rice shoot cultivation device 5, connecting power transmission shaft 96.
Thus, like Fig. 1, Figure 10, shown in Figure 13, the power of power transmission shaft 48 passes to rice shoot cultivation device 5 via speed change gear between strain 88, bevel gear 90,53, plantation clutch 95, output shaft 89 and power transmission shaft 96.
(to the drive structure of hydraulic pump transmission)
Below in the explanation gearbox 17 to the drive structure of hydraulic pump 97 transmissions.
Like Figure 10, Figure 11, shown in Figure 12, linking hydraulic pump 97 in the front portion on the top of the horizontal sidepiece on the right side of gearbox 17, the power shaft 97a of hydraulic pump 97 enters into the inside of gearbox 17.The power shaft 33a of hydrostatic formula stepless speed change device 33 and the power shaft 97a of hydraulic pump 97 are configured to the core shape, and the power shaft 97a of hydraulic pump 97 is positioned at the top of the front portion of gearbox 17, and be approaching with the 17a of wall portion of the front of gearbox 17.
Like Figure 10, Figure 11, shown in Figure 12; Between the power shaft 97a of the power shaft 33a of hydrostatic formula stepless speed change device 33 and hydraulic pump 97, dispose driving shaft 98; The power shaft 33a of hydrostatic formula stepless speed change device 33 and driving shaft 98 are connected through spline via binding parts cylindraceous 99, and the power shaft 97a of hydraulic pump 97 is connected via binding parts 100 cylindraceous with driving shaft 98.Thus, driving shaft 98 is configured in the inside of gearbox 17 along left and right directions, becomes along the state of the 17a of the wall portion configuration of the front of gearbox 17.Thus, the transmission of power of engine 19 is given the power shaft 33a of hydrostatic formula stepless speed change device 33, passes to hydraulic pump 97 via driving shaft 98, drives hydraulic pump 97.
Like Figure 10, Figure 11, shown in Figure 12, be full of lubricating oil in the inside of gearbox 17, gearbox 17 is by oil bathization, and the oil level of gearbox 17 is set at than the power shaft 33a of hydrostatic formula stepless speed change device 33 and output shaft 33b and leans on upside slightly.On the position lower than the power shaft 33a of hydrostatic formula stepless speed change device 33 and output shaft 33b, speed change gear 88, output shaft 89, box of tricks 51 and power transmission shaft 50, left and right sides front truck axle box 23, the output shaft 56 of advancing between configuration power transmission shaft 48,47 and strain.As after state, the electronic-controlled power steering mechanism 101 of fluid pressure type is attached at the top of the front portion of gearbox 17, possesses the breather pipe 112 that top has peristome 112a in the front side of electronic-controlled power steering mechanism 101, possesses oil level indicator 113 at the rear side of electronic-controlled power steering mechanism 101.
Like Figure 10, Figure 11, shown in Figure 12; On gearbox 17, possess the power shaft 33a of the hydrostatic formula stepless speed change device 33 of encirclement and protuberance 17b, the 17c of output shaft 33b; The protuberance 17d that on gearbox 17, possesses the power shaft 97a that surrounds hydraulic pump 97 is formed with the notch 17e of a pair of semicircle shape on the interior perimembranous of the protuberance 17b of gearbox 17.
Thus, like Figure 10, Figure 11, shown in Figure 12, driving shaft 98 becomes the state of the lubricating oil that enters into gearbox 17, and the lubricating oil of gearbox 17 enters into and connects driving shaft 98 and the spline part that links parts 99,62.The lubricating oil of gearbox 17 enters into the inside of the protuberance 17c of gearbox 17 through bearing 45, and the lubricating oil of gearbox 17 enters into the output shaft 33b that connects hydrostatic formula stepless speed change device 33 and the spline part of power transmission shaft 44.
Like Figure 10, Figure 11, shown in Figure 12; The lubricating oil of gearbox 17 is through the gap between the notch 17e of gearbox 17, the protuberance 17b that reaches gearbox 17 and the binding parts 99; Enter into the inside of the protuberance 17b of gearbox 17, the lubricating oil of gearbox 17 enters into power shaft 33a that connects hydrostatic formula stepless speed change device 33 and the spline part that links parts 99.The lubricating oil of gearbox 17 is through the protuberance 17d of gearbox 17 and the gap between the binding parts 100; Enter into the inside of the protuberance 17d of gearbox 17, the lubricating oil of gearbox 17 enters into power shaft 97a that connects hydraulic pump 97 and the spline part that links parts 100.
(steering mechanism of front-wheel)
The structure that turns to of left and right sides front-wheel 1 is described below.
Like Figure 10, Figure 11, shown in Figure 12; The electronic-controlled power steering mechanism 101 of fluid pressure type is attached at the top of the front portion of gearbox 17; Upside in gearbox 17 and electronic-controlled power steering mechanism 101 possesses control crank 27 (with reference to Fig. 1), and electronic-controlled power steering mechanism 101 links via steering spindle 102 interlocks with control crank 27.
Like Figure 10, Figure 11, shown in Figure 12; The 17a of wall portion along the front of gearbox 17; Steering spindle 102 is so that the 17a of wall portion of the front through gearbox 17 and the mode between the driving shaft 98 dispose along the vertical direction; In the inside of gearbox 17, become along the driving shaft 98 of left and right directions configuration and the state that intersects along the steering spindle 102 of above-below direction configuration.
Like Figure 11 and shown in Figure 12, be formed with gear 102a in the bottom of steering spindle 102, the bottom of steering spindle 102 is bearing on the gearbox 17 via bearing 103 rotations freely.Top in steering spindle 102 is connecting protuberance 102b through spline; The protuberance 102b of steering spindle 102 is rotatably freely supported on the protuberance 17f of gearbox 17 via lining 104, and the output shaft 101a of electronic-controlled power steering mechanism 101 is connected through spline with the protuberance 102b of steering spindle 102.
Shown in figure 11; Supporting steering spindle 105 freely in the rotation of the bottom of gearbox 17; Be fixed on the gear 102a engagement of gear 105a and steering spindle 102 on the top of steering spindle 105, between the steering arm 25 of the bottom that is fixed on steering spindle 105 and left and right sides front-wheel 1, connecting pull bar 26.Thus, during manipulation handle 27, steering spindle 102 is rotated operation via electronic-controlled power steering mechanism 101, and the steering arm 25 of steering spindle 105 is by swinging operation, and left and right sides front-wheel 1 is by steering operation.
Shown in figure 12, linking filter 106 in the front portion of the bottom of the horizontal sidepiece on the right side of gearbox 17, from filter 106 to hydraulic pump 97 connecting the horizontal sidepiece (wall portion) on the right side that is formed at gearbox 17 internal oil passages 17g.Between hydraulic pump 97 and electronic-controlled power steering mechanism 101, connect hydraulic piping 107, between the control valve (not shown) of giving row's working oil with respect to hydraulic cylinder 4 (with reference to Fig. 1) and electronic-controlled power steering mechanism 101, connecting hydraulic piping 108.
Thus, shown in figure 12, the lubricating oil of gearbox 17 is drawn into the filter 106 from suction inlet (not shown) as working oil, and the internal oil passages 17a via gearbox 17 supplies to the hydraulic pump 97 from filter 106.The working oil of hydraulic pump 97 is fed into electronic-controlled power steering mechanism 101 via hydraulic piping 107, supplies to control valve via hydraulic piping 108, gets back to gearbox 17 from control valve.
Like Figure 11 and shown in Figure 12; Inside at gearbox 17; Extending the pipe arrangement 109 that the working oil that will overflow from hydrostatic formula stepless speed change device 33 is discharged; Pipe arrangement 109 extends downwards between driving shaft 98 and power transmission shaft 48 and rearward extends along the inner surface of the horizontal sidepiece (wall portion) in the left side of gearbox 17, is connected on the front truck axle box 23 in left side.On the inner surface of the horizontal sidepiece (wall portion) in the left side of gearbox 17, form the carrier 17h of コ word shape, pipe arrangement 109 enters into the carrier 17h of gearbox 17, through the fixing pipe arrangement 109 of bolt 110 and packing ring 111.
Thus, like Figure 11, Figure 12, shown in Figure 13, get back to the front truck axle box 23 in left side via pipe arrangement 109 from the working oil that hydrostatic formula stepless speed change device 33 overflows, the working oil of the front truck axle box 23 in left side is got back to the inside of gearbox 17 through bearing 55.
Like this, pipe arrangement 109 parts such as oil circuit such as grade that make the working oil of overflowing from hydrostatic formula stepless speed change device 33 get back to assigned position are provided in the inside of gearbox.Thus,, also only can get back to the inside of gearbox, so need not implement sufficient encapsulation process to pipe arrangement 109 even working oil spills from pipe arrangement 109.Therefore, no longer need implement sufficient encapsulation process to pipe arrangement 109, be favourable aspect the reduction of simplicity of constructing and production cost.
In addition, as above-mentioned, get back to the front truck axle box 23 via pipe arrangement 109 from the working oil that hydrostatic formula stepless speed change device 33 overflows.Like this; Not that the working oil of overflowing from hydrostatic formula stepless speed change device is directly got back to the gearbox 33; But get back in the gearbox via front truck axle box 23; Particularly can expect in front truck axle box 23, to carry out the cooling (because the front truck axle box is elongated shape, surface area ratio is bigger) of working oil thus.Therefore, the cooling of the working oil that can expect to overflow from hydrostatic formula stepless speed change device 33 can suppress the deterioration of working oil, improves the durability of working in paddy field.
(the 1st other embodiments)
In above-mentioned " embodiment ", also can as Figure 14, constitute the hydrostatic formula stepless speed change device 33 of Figure 10 power shaft 33a and output shaft 33b, hydraulic pump 97 near.
Shown in figure 14; Driving shaft 98 is bearing in the gearbox 17 via bearing 114 rotations freely; The power shaft 33a of hydrostatic formula stepless speed change device 33 is not via linking parts 99 (with reference to Figure 10) with driving shaft 98 but is connected through spline that the power shaft 97a of hydraulic pump 97 is not via linking parts 100 (with reference to Figure 10) with driving shaft 98 but is connected through oval (declaring for a short time) structure.
Thus, shown in figure 14, the lubricating oil of gearbox 17 enters into the inside of the protuberance 17b of gearbox 17 through bearing 114, and the lubricating oil of gearbox 17 enters into the power shaft 33a that connects hydrostatic formula stepless speed change device 33 and the spline part of driving shaft 98.The lubricating oil of gearbox 17 enters into the inside of the protuberance 17d of gearbox 17 through bearing 114, and the lubricating oil of gearbox 17 enters into the power shaft 97a that connects hydraulic pump 97 and the elliptical section of driving shaft 98.
Shown in figure 14, travelling gear 115 is embedded on the driving shaft 98 outside the rotation freely relatively, and shifting part 116 is through rotation of spline one and outer sliding freely being embedded on the driving shaft 98.Between the power shaft 33a of hydrostatic formula stepless speed change device 33 and output shaft 33b, dispose travelling gear 117, travelling gear 117 and low-speed gear 46 and travelling gear 115 engagements.Be operated into neutral stop position at hydrostatic formula stepless speed change device 33, operate the high speed position of retreating side from neutral stop position, operate from neutral stop position under the state of position of this side of high speed position of advance side, shifting part 116 leaves (with reference to Figure 14) from travelling gear 115.When hydrostatic formula stepless speed change device 33 was operated into the high speed position of advance side, shifting part 116 was by to the paper left side of Figure 14 slide, with travelling gear 115 engagements.
Shown in figure 14; The inner setting of hydrostatic formula stepless speed change device 33 becomes; Under the situation of the high speed position of hydrostatic formula stepless speed change device 33 being operated advance side, the power shaft 33a of hydrostatic formula stepless speed change device 33 and output shaft 33b rotate to equidirectional with identical speed, but in fact because of leakage of working oil etc.; Compare with the power shaft 33a of hydrostatic formula stepless speed change device 33, output shaft 33b is with lower slightly speed rotation.Be set at " 1 " from travelling gear 115,81 speed reducing ratio to low-speed gear 46.Thus; Through on the high speed position of the advance side of hydrostatic formula stepless speed change device 33, shifting part 116 being engaged on the travelling gear 115; Be passed to the power on the power shaft 33a of hydrostatic formula stepless speed change device 33; Via the hydraulic circuit of the inside of hydrostatic formula stepless speed change device 33 and pass to power transmission shaft 44, and pass to power transmission shaft 44 via travelling gear 115,81 and low-speed gear 46 from the output shaft 33b of hydrostatic formula stepless speed change device 33.
In a pair of oil circuit (not shown) of hydraulic pump (not shown) that connects hydrostatic formula stepless speed change device 33 and hydraulic motor (not shown); Possess the mid portion of a pair of oil circuit bleed off circuit connected to one another (not shown) (being operated to closed condition usually); If at the high speed position superior displacement parts 116 and travelling gear 115 engagements of the advance side of hydrostatic formula stepless speed change device 33, then bleed off circuit is operated to open mode (connected state).Thus, with respect to the transmission of power that the power shaft 33a from hydrostatic formula stepless speed change device 33 carries out via travelling gear 115,81 and low-speed gear 46, hydrostatic formula stepless speed change device 33 can not become resistance.
(the 2nd other embodiments)
In the above-described embodiment, also can constitute, the horizontal sidepiece on the right side of gearbox 17 possesses hydrostatic formula stepless speed change device 33, and the horizontal sidepiece in the left side of gearbox 17 possesses hydraulic pump 97.Also can constitute, not possess electronic-controlled power steering mechanism 101, control crank 27 and steering spindle 102 interlocks are linked.Also can constitute, engine 19 is not equipped in the front portion of body, drive 11 the downside of attending a banquet but be equipped in.
(the 3rd other embodiments)
In the above-described embodiment, as riding-type paddy field work machine of the present invention, be that example is illustrated, but also can be other riding-type paddy field work machines such as riding-type seed-sowing machine with the riding type rice transplanter.
Claims (6)
1. riding-type paddy field work machine; Possess: have the upwardly extending pair of right and left main frame (21) in front and back body, be arranged on this body the front portion pair of right and left front-wheel (1) and be configured in the rear portion of above-mentioned body and have the back axle case (28) of pair of right and left trailing wheel (2); It is characterized in that
Above-mentioned back axle case (28) via suspension fork mechanism (S) elastic bearing in above-mentioned body, and,
Front portion at above-mentioned main frame (21) is provided with strengthening part,
Have above-mentioned back axle case (28) be linked to connecting rod (29) and pair of right and left lower link (30) on the pair of right and left of above-mentioned body,
Each above-mentioned end of going up the above-mentioned body side of connecting rod is supported on above-mentioned main frame with the mode that can swing, and the end of the above-mentioned body side of each above-mentioned lower link (30) is supported on above-mentioned strengthening part with the mode that can swing,
And then; With respect to above-mentioned back axle case (28); Above-mentioned suspension fork mechanism (S) is positioned at front side; Cross bar (34) is supported with the mode that the axle center, front and back (P6) around the rear end of above-mentioned main frame (21) swings up and down freely, and above-mentioned cross bar (34) is supported with the mode that the axle center, front and back (P7) around the rear portion of above-mentioned back axle case (28) swings up and down freely.
2. riding-type paddy field work machine as claimed in claim 1 is characterized in that,
Second strengthening part (20a) that above-mentioned strengthening part has pair of right and left first strengthening part (20) that extends from the above-mentioned main frame of pair of right and left (21) downwards and is provided with across the bottom of above-mentioned first strengthening part of pair of right and left (20) and above-mentioned first strengthening part of pair of right and left (20) is linked, the end of the above-mentioned body side of each above-mentioned lower link (30) is supported on above-mentioned first strengthening part (20) with the mode that can swing.
3. riding-type paddy field work machine as claimed in claim 1 is characterized in that,
Elastic force when above-mentioned suspension fork mechanism (S) can be adjusted above-mentioned elastic bearing.
4. riding-type paddy field work machine as claimed in claim 2 is characterized in that,
Above-mentioned body has gearbox (17), and this gearbox (17) is linked to above-mentioned main frame (21) and above-mentioned first strengthening part (20) and second strengthening part (20a).
5. riding-type paddy field work machine as claimed in claim 4 is characterized in that,
The rear portion of above-mentioned gearbox (17) is arranged between above-mentioned main frame of pair of right and left (21) and pair of right and left first strengthening part (20); Horizontal sidepiece is installed on above-mentioned main frame (21) and above-mentioned first strengthening part (20) about the rear portion of above-mentioned gearbox (17); And the back side at the rear portion of above-mentioned gearbox (17) is installed on above-mentioned second strengthening part (20a).
6. like each described riding-type paddy field work machine in the claim 1～5, it is characterized in that,
Possess gearbox (17) in the front portion of above-mentioned body, possess hydraulic pump (97) at a horizontal sidepiece of above-mentioned gearbox (17),
The driving shaft (98) that is connected in above-mentioned hydraulic pump (97) extends to another horizontal sidepiece of gearbox (17) along left and right directions in the inside of above-mentioned gearbox (17); The power of engine (19) is delivered to driving shaft (98) from another horizontal sidepiece of above-mentioned gearbox (17); And
Upside at above-mentioned gearbox (17) possesses control crank (27); Interlock is linked to the steering spindle (102) of above-mentioned control crank (27) extends configuration in the inside of above-mentioned gearbox (17) along the vertical direction near above-mentioned driving shaft (98), can carry out steering operation via steering spindle (102) to above-mentioned front-wheel (1) by above-mentioned control crank (27).
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005263832A JP4750516B2 (en) | 2005-09-12 | 2005-09-12 | Paddy field work vehicle |
| JP2005-263832 | 2005-09-12 | ||
| JP2005263832 | 2005-09-12 | ||
| JP2005-280139 | 2005-09-27 | ||
| JP2005280139 | 2005-09-27 | ||
| JP2005280139A JP4488428B2 (en) | 2005-09-27 | 2005-09-27 | Riding paddy field machine |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100886173A Division CN101045462B (en) | 2005-09-12 | 2006-03-28 | Riding-type paddy field work machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1930938A CN1930938A (en) | 2007-03-21 |
| CN1930938B true CN1930938B (en) | 2012-07-18 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100886173A Active CN101045462B (en) | 2005-09-12 | 2006-03-28 | Riding-type paddy field work machine |
| CN200610071532XA Active CN1930938B (en) | 2005-09-12 | 2006-03-28 | Riding type irrigated field operating machine |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100886173A Active CN101045462B (en) | 2005-09-12 | 2006-03-28 | Riding-type paddy field work machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4750516B2 (en) |
| CN (2) | CN101045462B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4871032B2 (en) * | 2006-06-07 | 2012-02-08 | 株式会社クボタ | Steering structure of work equipment |
| KR101331849B1 (en) * | 2010-08-18 | 2013-11-22 | 이세키노우키가부시키가이샤 | Seeding transplanter |
| KR101962967B1 (en) * | 2012-03-28 | 2019-03-27 | 가부시끼 가이샤 구보다 | Paddy field working vehicle and axle case for working vehicle |
| CN103460866A (en) * | 2013-09-05 | 2013-12-25 | 中机南方机械股份有限公司 | Planting distance speed adjustment mechanism for rice transplanter |
| JP5818929B2 (en) * | 2014-03-06 | 2015-11-18 | ヤンマー株式会社 | Riding type work machine |
| JP2015223110A (en) * | 2014-05-27 | 2015-12-14 | 株式会社クボタ | Working machine |
| JP6275617B2 (en) * | 2014-10-15 | 2018-02-07 | ヤンマー株式会社 | Work vehicle |
| JP6353339B2 (en) * | 2014-10-15 | 2018-07-04 | ヤンマー株式会社 | Work vehicle |
| CN105984493B (en) * | 2015-01-28 | 2020-10-16 | 株式会社久保田 | Riding rice transplanter or riding direct seeder |
| CN112444641B (en) * | 2020-11-06 | 2022-12-27 | 中国科学院合肥物质科学研究院 | Device for detecting running speed and sinking depth of tractor in paddy field environment |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06199140A (en) * | 1993-01-06 | 1994-07-19 | Kubota Corp | Oil filter installing structure for agricultural work vehicle |
| JP2000272364A (en) * | 1999-03-25 | 2000-10-03 | Kubota Corp | Paddy field work device |
| JP4629881B2 (en) * | 2001-02-01 | 2011-02-09 | 株式会社クボタ | Ride type paddy field work machine |
| JP3880464B2 (en) * | 2002-06-20 | 2007-02-14 | 株式会社クボタ | Passenger work vehicle |
| JP4232479B2 (en) * | 2003-02-17 | 2009-03-04 | 井関農機株式会社 | Ride type rice transplanter |
-
2005
- 2005-09-12 JP JP2005263832A patent/JP4750516B2/en active Active
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| Publication number | Publication date |
|---|---|
| CN101045462A (en) | 2007-10-03 |
| JP4750516B2 (en) | 2011-08-17 |
| JP2007074922A (en) | 2007-03-29 |
| CN1930938A (en) | 2007-03-21 |
| CN101045462B (en) | 2012-05-09 |
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