CN101347068A

CN101347068A - Seedling planting machine

Info

Publication number: CN101347068A
Application number: CNA2008101333374A
Authority: CN
Inventors: 福井享; 大内建之; 山口信
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2007-07-19
Filing date: 2008-07-18
Publication date: 2009-01-21
Anticipated expiration: 2028-07-18
Also published as: JP2009022201A; CN101347068B; KR20090009151A; JP4957427B2; KR100988059B1

Abstract

The invention relates to a seedling planting machine aiming to prevent the seeding planting tool from pulsation even in wide planting situation. When a wide planting space is set by the plant spacing lever, a plant spacing speed change gear (A) drives the seeding planting device (52) to move through a first eccentric gear (100) and a second eccentric gear (112). The machine also has a speed limiting arm for limiting the high speed side switching of the speed change lever which is used to adjust the speed of the machine though a speed changing gear. The plant spacing lever can select the operating speed of the seeding planting device acquired from the plant spacing speed change gear (A) in a suitable speed interval among multiple intervals and change the seed planting space.

Description

Seedling transplanter

Technical field

The present invention relates to change the seedling transplanter of the plantation spacing in the rows of seedling.

Background technology

In the seedling transplanter that possesses the seedling-planting device that has the rice transplanter hull (being also referred to as rice transplanter sometimes), during seedling transplanter advances, the instrument that plants seedlings of seedling-planting device is that pivot and relative travel speed are rotated with constant speed with the central shaft, and seedling is planted in the farmland with predetermined distance.

The seedling-planting device that possesses eccentric gear in use will make the occasion of planting seedlings action of tool and planting seedlings with the interval of broad via this eccentric gear, though there is the seedling transplanter that the movement locus that makes the tool work that plants seedlings is suitable and suitably plant seedlings, but when the operating rate of seedling-planting device became high speed, then pulsation phenomenon (to the such instability action of vibration takes place) took place in the transmission of seedling-planting device sometimes.

In order to prevent this phenomenon, possess by advancing in front and back to be provided between speed change gear and the eccentric gear preventing that the one-way clutch that reverses from preventing the seedling transplanter of unit of the transmission generation pulsation phenomenon of above-mentioned seedling-planting device thereby researched and developed.

Patent documentation 1: TOHKEMY 2005-143340 communique

In possessing in the seedling transplanter of disclosed seedling-planting device as patent documentation 1, because eccentric gear is installed, so in occasion to plant seedlings than the interval of broad, in the operation that utilizes gear lever etc. with the travel speed speed change during to a side at a high speed, then the operating rate of seedling-planting device becomes at a high speed, and the instrument that plants seedlings is pulsed easily.

Summary of the invention

So, the object of the present invention is to provide pulsation that prevents the instrument that plants seedlings that causes by eccentric gear and the seedling transplanter that can suitably plant seedlings.

The problems referred to above of the present invention solve with following technical scheme.

The invention of scheme one record is a kind of seedling transplanter, has: running vehicle body 2; The engine 20 of lift-launch on this running vehicle body 2; Power from this engine 20 is carried out speed change and changes the speed change gear 23 of the travel speed of running vehicle body 2; And the gear lever 124 that makes these speed change gear 23 actions and change travel speed, the portion of planting seedlings 4 that will have the seedling-planting device 52 that plants seedlings to the farmland kind is connected the rear portion of running vehicle body 2, it is characterized in that having: the plantation spacing in the rows speed change gear A at interval that changes seedling; The operating rate of seedling-planting device 52 relative travel speeds when planting seed in the farmland, this seedling-planting device 52 is carried out first eccentric gear 100 and second eccentric gear 112 of transmission rapidly; Make this spacing in the rows speed change gear A carry out the spacing in the rows bar 123 of gear shifting operation; And, then limit the restraint device 123b of gear lever 124 to the speed change of high-speed side if will operate a side of widely setting by the spacing in the rows that spacing in the rows bar 123 obtains.

Have again, in this manual, the fore-and-aft direction of seedling transplanter is referred to as front side, direction of retreat, will be referred to as left side, right side respectively towards the left and right directions of direction of advance.

Usually, with the plantation of seedling (spacing in the rows) when widely setting at interval, for the work track that makes the instrument of planting seedlings suitable, the operating rate of the travel speed of seedling-planting device 52 relative seedling transplanters makes to rapid transmission seedling-planting device 52 work plant seedlings when plant seedlings in the farmland, but because the action of seedling-planting device is because first eccentric gear 100 and second eccentric gear 112 and sometimes fast and sometimes slow, so the transmission of seedling-planting device is pulsed.In addition, when seedling transplanter advances at utmost speed, be exaggerated because the operating rate of seedling-planting device changes, so the difference of height of the variation of the operating rate of seedling-planting device becomes greatly, it is big that pulsation also becomes.

But according to the invention that scheme one is put down in writing, when spacing in the rows was widely set, restraint device 123b restriction gear lever 124 was mobile to high speed one side, owing to limit speed change to high-speed side, thereby suppress to pulse and raising plantation precision.

Description of drawings

Fig. 1 is the end view of riding type rice transplanter.

Fig. 2 is the vertical view of riding type rice transplanter.

Fig. 3 is the major part end view of the portion of planting seedlings.

Fig. 4 is the major part rearview of the supporting construction of seedling carrying base.

Fig. 5 is the major part vertical view of the portion of planting seedlings.

Fig. 6 is the figure of the fastening relation of explanation upper-lower position adjusting rod of rotor and beam parts.

Fig. 7 is the expansion cutaway view of clutch housing of planting seedlings.

Fig. 8 is the end view (Fig. 8 (a)) and the stereogram (Fig. 8 (b)) of the installation portion of spacing in the rows bar and gear lever.

Fig. 9 is the figure of the annexation of secondary gear lever of explanation and vehicle-speed limit arm

Figure 10 is near the major part end view the seedling carrying base.

Figure 11 is the key diagram of the mounting structure of one-way clutch.

Figure 12 is the plant seedlings figure of mounting structure of the chain of transmission enclosure interior of portion and bolt of expression.

Figure 13 is the plant seedlings figure of mounting structure of the chain of transmission enclosure interior of portion and bolt of expression.

Figure 14 is fuel tank and the end view (Figure 14 (a)) of its guard block part and the stereogram (Figure 14 (b)) of guard block.

Among the figure:

The 1-riding type rice transplanter, 2-running vehicle body, 20-engine, 100-first eccentric gear, 112-second eccentric gear, 123-spacing in the rows bar, 123b-vehicle-speed limit arm, 124-gear lever, A-spacing in the rows speed change gear.

Embodiment

Below, based on accompanying drawing preferred implementation of the present invention is described.

Fig. 1 and Fig. 2 are as the end view of the riding type rice transplanter of one embodiment of the present of invention and vertical view.Riding type rice transplanter 1 liftably is equipped with the portion of planting seedlings 4 at the rear side of running vehicle body 2 by lifting linking member device 3, is provided with in order to make the not guard block 5 under the slave body drop of operator at the rear portion of running vehicle body 2 upside.

Running vehicle body 2 be possess as the front-

wheel

10,10 about driving wheel a pair of and a pair of about the four-wheel drive vehicle of

trailing wheel

11,11, dispose gearbox body 12 in the front side of body, be provided with the

terminal housing

13,13 of front-wheel in the side, the left and right sides of this gearbox body 12, be separately installed with left and right sides front-

wheel

10,10 from the outwards outstanding left and right sides front-wheel axletree in each front-wheel support portion of the steering that can change the

terminal housing

13,13 of this left and right sides front-wheel.In addition, be fixed with the leading section of mainframe 15 in the back side of gearbox body 12 one, is that rear

wheel gear housing

18,18 is supported in the fulcrum rolling freely at the left and right sides, rear end of this mainframe 15 central portion with the horizontally disposed trailing wheel axis of rolling in front and back, from the outwards outstanding axletree of rear wheel of this rear

wheel gear housing

18,18 trailing

wheel

11,11 is being installed.

Engine 20 carries on mainframe 15, and the rotary power of this engine 20 is delivered to gearbox body 12 by belt driver 21 and as the Hyaulic infinite variable speed mechanism (HST) 23 of speed change gear.The rotary power that is delivered to gearbox body 12 is separated into driving dynamics and outside outputting power and output after by the not shown driving dynamics speed change gear speed change in this gearbox body 12.And when the part of driving dynamics was delivered to the

terminal housing

13,13 of front-wheel and drives front-

wheel

10,10, remainder was delivered to rear

wheel gear housing

18,18 and drives trailing wheel 11,11.In addition, outside outputting power is transferred to the clutch housing 25 that plants seedlings of the rear side that is arranged on running vehicle body, then by the power transmission shaft 26 that plants seedlings to the portion's of planting seedlings 4 transmissions.

The top of engine 20 covers with hood 30, is provided with seat 31 thereon.In the place ahead at seat 31 has, adorn the front shroud 32 of various operating mechanisms, be provided with the steering wheel 34 that front-

wheel

10,10 is carried out steering operation above it.The left and right sides, lower end of hood 30 and front shroud 32 is as horizontal floor step 35.Floor step 35 is made part clathrate (with reference to Fig. 2), and the mud that is had on the operator's of walking the footwear on 35 on this floor step can be fallen in the farmland.Rear portion on the floor step 35 is as the backward step 36 of double as rear guard.

In addition, in the anterior left and right sides of running vehicle body 2, place supply in advance and be arranged on the position of stretching out to the side rotationally with the standby

seedling carrying base

38,38 of seedling and leave on the inboard position than body.

Lifting linking member device 3 is parallel rod structures, has one and goes up connecting rod 40 and a pair of left and right sides lower link 41,41.Connecting rod 40 and lower link 41,41 its base portion side are rotated and are installed in the backsight of erectting the rearward end that is arranged at mainframe 15 freely and are on the connecting rod pedestal 42 of a font on these, connect longitudinal rod 43 in its front.And, insert in the bottom of longitudinal rod 43 and to be connected with rotation and to be supported on connecting axle 44 in the portion of planting seedlings 4 freely, and be the center rough ground connection portion 4 of planting seedlings freely with connecting axle 44.Be provided with lifting hydraulic cylinder 46 being fixed on the support component on the mainframe 15 and being integrally formed between the leading section of the rocking arm (not shown) on the connecting rod 40, by make this lifting hydraulic cylinder 46 flexible with hydraulic pressure, thereby last connecting rod 40 rotates up and down, and the portion 4 of planting seedlings is to keep almost certain posture lifting.

The portion 4 of planting seedlings is the structure of 8 drillings, and possesses: the transmission housing 50 of double as frame; Seedling carrying base 51, its place blanket shape seedling and carry out about move back and forth and with seedling one strain strain supply to each drilling seedling conveying end 51a ... the time with the seedling of a horizontal row amount all supply to seedling conveying end 51a ... the time, then by send seedling band 51b ... seedling is transplanted on the below; To supply to seedling conveying end 51a ... seed plant seedling-planting device 52 in the farmland, And the body route of next stroke is drawn in the lip-deep lead-in wire concentrator marker 53 about a pair of of soil etc.

Bottom in the portion of planting seedlings 4 is provided with central rice transplanter hull 55 in central authorities, rice transplanter hull 57 and side rice transplanter hull 56 in the middle of being provided with respectively in its left and right sides.When under the state of the mud face that makes the central rice transplanter hull 55 as these rice transplanter hulls, middle rice transplanter hull 57 and side rice transplanter hull 56 contact farmlands, body being advanced, then central rice transplanter hull 55, middle

rice transplanter hull

57 and 56 pairs of mud faces of side rice transplanter hull carry out sliding smooth the time, on its smooth track by seedling-planting device 52 ... plant seedlings.Each rice transplanter hull of central authorities' rice transplanter hull 55, middle rice transplanter hull 57 and side rice transplanter hull 56 rotates in the concavo-convex and moving up and down mode on soil surface, the corresponding farmland of front and installs freely, when planting seedlings operation, the front portion of center rice transplanter hull 55 is moving up and down to be detected by angle of attack control sensor (not shown), according to its testing result, the hydraulic valve of the above-mentioned lifting hydraulic cylinder 46 of switching controls makes the portion's of planting seedlings 4 liftings, thereby always remains the planting depth of seedling fixing.

31 rear is provided with guard block 5 at the seat, even if the operator takes advantage of when carrying out operation on backward step 36, also can not fall from body.

The first rotor 27b and the second rotor 27a as an example of flattening device are installed in the portion of planting seedlings 4.In addition, seedling carrying base 51 is structures that the support rotor 65a with the rectangle support frame 65 of the left and right directions of portion's 4 integral body of planting seedlings in support and above-below direction width maximum slides at left and right directions as guide rail.

The end view of Fig. 3 and the rearview of Fig. 4 are represented the major part of portion of planting seedlings 4 (not expression lead-in wire concentrator marker 53) and rotor supporting structure, and Fig. 5 represents the major part vertical view of the first rotor 27b and the second rotor 27a and central rice transplanter hull 55, middle rice transplanter hull 57 and side rice transplanter hull 56 and seedling-planting device 52 parts.

Be provided with beam parts 66 on the dual-side parts 65b that the upper end is rotated the above-mentioned support frame 65 be supported on seedling carrying base 51 freely on the rotor supporting structure, be fixed on the support arm 67 on the two ends of these beam parts 66 and rotating the Rotor carriage 68 that is installed in freely on this support arm 67.The first driving shaft 70b and the second driving shaft 70a of the first rotor 27b and the second rotor 27a are installed in the lower end of this Rotor carriage 68.In addition, be connected rotation near the bottom of this Rotor carriage 68 and be installed in attaching parts 71 on the transmission housing 50 freely.

As shown in Figure 5, because the relation of the allocation position of central rice transplanter hull 55, middle rice transplanter hull 57 and side rice transplanter hull 56, the first rotor 27b that is positioned at central rice transplanter hull 55 the place aheads is configured in the place ahead than the second rotor 27a in the place ahead that is positioned at centre rice transplanter hull 57 and side rice transplanter hull 56.Thus, the power to the second driving shaft 70a of the second rotor 27a passes through universal joint 72 transmission such as grade from the gear in the rear wheel gear housing 18 of trailing wheel 11, and the first driving shaft 70b of the first rotor 27b also carries out transmission of power from a pair of left and right sides chain housing 73, the 73 interior a pair of chains (not shown) of transferring power respectively from the end of the body inner side of the second driving shaft 70a of the second rotor 27a.

About dispose support arm 67 by the rear of each

tire

11a, 11b of three, trailing wheel 11 that 11c constitutes respectively, support arm 67 and the Rotor carriage 68 that supports the second driving shaft 70a and the first rotor 27b and the second rotor 27a are carried out up-down adjustment at the rear of trailing wheel 11 about each

tire

11a, 11b, 11c inter-engagement of three, thereby the graft union of this Rotor carriage 68 and beam parts 66 can not interfere with trailing wheel 11.

In addition, the first driving shaft 70b of the first rotor 27b of body central portion is only supported by a pair of left and right

sides chain housing

73,73, so in order to strengthen

chain housing

73,73, be provided with the strengthening part 74 that the chain housing about a pair of 73,73 is carried out bridge joint.

Have, the first rotor 27b utilizes the upper end to be supported on first connecting rod parts 76 on the beam parts 66 and second connecting rod parts 77 and is hanging by spring 78 again.

These first connecting rod parts 76 and second connecting rod parts 77 are fixed and are supported on the second connecting rod parts 77 that first connecting rod parts 76 on the beam parts 66 and an end rotate on the other end that is connected these first connecting rod parts 67 freely by an end respectively and constitute, at the other end of these second connecting rod parts 77 with rotate between the installation sheet 74a that is supported on freely on the strengthening part 74 and be connected with above-mentioned spring 78.

By Rotor carriage 68 and support arm 67 and beam parts 66 and be implemented in upper-lower position with upper-lower position adjusting lever 81 and regulate, Fig. 6 represents the fastening portion of beam parts 66 and upper-lower position adjusting lever 81 with the first rotor 27b and the second rotor 27a.The A-A line section of Fig. 6 (a) presentation graphs 4 is to view, and Fig. 6 (b) expression is from the end view of the arrow A direction observation of Fig. 6 (a).

The bottom of upper-lower position adjusting lever 81 is " コ " shape by section linkage component 83 is connected with the bar 84 that connects this linkage component 83 in the horizontal direction.This linkage component 83 combines with bar projection 82 one.In addition, bar projection 82 is L font plate 82a by side-looking and constitutes with the surface plate 82b of this L font plate 82a one, is provided with the axial region 85 that is supported on the support frame 65 at the central portion of L font plate 82a, and L font plate 82a rotates being supported on the axial region 85 freely.In addition, the surface plate 82b of bar projection 82 is configured to contact with the cylindrical portion that with the protuberance 66a that gives prominence to from beam parts 66 is the roller 86 of rotating shaft.

Therefore, with upper-lower position adjusting rod 81 when the arrow S of Fig. 4 direction is rotated, then because the surface plate 82b of bar projection 82 boosts roller 86, so beam parts 66 are moved upward.At this moment, roller 86 is owing to contact with the surface plate 82b of bar projection 82 rotation the time, thus can realize the reduction of the service load of upper-lower position adjusting lever 81, so and owing to being that rotary body can frictionally not guaranteed good operability.And, because bar projection 82 is rotated up and down, this bar projection 82 with the mode fastening that protuberance 66a is contacted as the cylindrical portion of the roller 86 of rotating shaft, so this protuberance 66a utilizes the rotation of upper-lower position adjusting lever 81 to body right-hand (the arrow S direction of Fig. 4), make upwards action of beam parts 66.Utilize above-mentioned the going up of this protuberance 66a to move, the ends with opposite with the connecting portion of beam parts 66 side first connecting rod parts 76 are that upwards rotate at the center with beam parts 66 also.Because the rotation that makes progress of these first connecting rod parts 76, the first rotor 27b also can rise upward by second connecting rod 77 and spring 78.If the first rotor 27b is moved up, then the second rotor 27a also moves up simultaneously by the first driving shaft 70b and the second driving shaft 70a.

Have again, because upper-lower position adjusting lever 81 is arranged on the substantial middle portion of running vehicle body 2, so carrying out the moving up and down occasion of the first rotor 27b and the second rotor 27a, the balance about obtaining easily.

In addition since by support arm 67 to the rotation of arrow T direction (Fig. 3), Rotor carriage 68 is moved upward, so can make the first rotor 27b and the second rotor 27a move to deposit position promptly in the inside of seedling carrying base 51 side and be in storage configuration.

In the present embodiment, normal place at upper-lower position adjusting lever 81 can be set at from the first rotor 27b and the second rotor 27a that the farmland face is positioned at the 40mm height, by rotating to the arrow S of Fig. 4 direction, thereby the comparable standard position exceeds maximum 15mm, rotate in the opposite direction by arrow S side, thereby the comparable standard position is low to maximum 15mm to Fig. 4.

As shown in Figure 4, the second side driving shaft 70a1, the 70a1 that rotor prolongs driving shaft that become that is used in as the smooth rotor 27a1 in second side, the 27a1 of the smooth rotor in a plurality of outsides of the left and right sides that left and right directions prolongs supports, this second side driving shaft 70a1,70a1 releasably are installed in more and lean on the second driving shaft 70a, the 70a of central portion, make the smooth rotor 27a1 in second side that detachably is installed on this second side driving shaft 70a1, the 70a1, the structure of 27a1.

According to said structure, when seedling transplanter being left in the occasion in warehouse or being deposited on the truck, with the outermost second side driving shaft 70a1 in two ends, the left and right sides, 70a1 be installed in the unified dismounting of the smooth rotor 27a1 in second side, 27a1 on this second side driving shaft 70a1, the 70a1, can dwindle body left and right sides width.

In addition, when seedling transplanter is advanced, accumulate in the occasion that the mud in farmland in the place ahead of the first rotor 27b and the second rotor 27a and water etc. flow in the mode that overwhelms the seedling of adjacent plantation from the outside, two ends, take off the second side driving shaft 70a1 at two ends, the left and right sides, 70a1 and be installed in this second side driving shaft 70a1, the smooth rotor 27a1 in second side at the two ends on the 70a1,27a1, dwindle body left and right sides width, by second inboard about the drawing back rotor 27a, the distance that 27a and adjacent kind are planted seedlings can not influence seedling thereby be adjustable as the mudflow that is caused by the first rotor 27b and the second rotor 27a.

Fig. 7 represents the expansion cutaway view in the clutch housing 25 of planting seedlings of rice transplanter of present embodiment.In the clutch housing 25 that plants seedlings of Fig. 7, be provided with the spacing in the rows speed change gear A of following formation.

Promptly, the clutch 91 that plants seedlings is delivered to power shaft 92 from gearbox body 12 by power transmission shaft with power.Be arranged at two ends are rotated on the power shaft 92 that is supported on freely on the clutch housing 25 that plants seedlings and one is configured in first gear 95 in arranged side by side locational big footpath and middle footpath second gear 96 sliding freely spline fitted on power shaft 92, have on power shaft 92 movable fit that the 3rd gear 97 of path is arranged again.On the relative side of above-mentioned second gear 96 and the 3rd gear 96, be respectively equipped with three-clutch pawl 96a and the four clutches pawl 97a that works in coordination.In addition, input part one side at power shaft 92 is fixedly connected with the 4th gear 99 and first eccentric gear 100.

In addition, on the position parallel, dispose output shaft 101 with power shaft 92, plant seedlings on the clutch back shaft 91a but be connected to the fastening of one end aftermentioned, this clutch back shaft 91a that plants seedlings connects the clutch housing 24 and be connected in the portion of planting seedlings 4 (Fig. 1) by being arranged on the second outside universal joint 101 of planting seedlings.

Always on output shaft 101, be provided with the 6th gear 105 of the 5th gear 104 that the 4th gear 99 with above-mentioned power shaft 92 meshing and path and one in the middle of the 7th gear 108 in footpath and the octadentate wheel 109 in big footpath, these the 6th gears 105, the 7th gear 108 and octadentate are taken turns 109 movable fits on output shaft 101.In addition, at the input one side spline fitted variable speed switch clutch 110 of output shaft 101, and at chimeric second eccentric gear 112 that is always meshing with first eccentric gear 100 of power shaft 92 of clutch housing 25 1 side clearances that plant seedlings.Constitute the variable speed gear unit by this first eccentric gear 100 and second eccentric gear 112.

In addition, be provided with the 6th clutch claw 110a and the 7th clutch claw 110b in the two sides of variable speed switch clutch 110, at a side the 6th clutch claw 110a when being positioned at the 5th clutch claw 104a fastening of the 5th gear 104 on the output shaft 101, then by with any of the 6th gear 105, the 7th gear 108 and the octadentate wheel 109 of the 5th gear 104 one of output shaft 101 will be from the driving force of power shaft 92 inputs via variable speed switch clutch 110 to the portion's of planting seedlings 4 outputs.In addition, but another the 7th clutch claw 110b fastening of variable speed switch clutch 110 be arranged on spline fitted on the clutch claw (not shown) of second eccentric gear 112 on the output shaft 101.When the clutch claw fastening of the 7th clutch claw 110b of variable speed switch clutch 110 and second eccentric gear 112, then transmission of power is delivered to the seedling-planting device 52 of the portion of planting seedlings 4 by the output shaft 101 and the clutch back shaft 91a that plants seedlings with variable speed from power shaft 92.

In addition, spacing in the rows speed change switching mechanism 115 is arranged on the position parallel with power shaft 92, and the space 25a cylindraceous that can move in the direction parallel with this power shaft 92 is arranged in the clutch housing 25 that plants seedlings.And, in this spacing in the rows speed change switching mechanism 115, be adjacent to be provided with from the switching mechanism operative end successively from four the first groove 115as of low speed side to the high-speed side correspondence, the second groove 115b, the 3rd groove 115c and the 4th groove 115d, in addition, since be communicated with the cylindric space 25a that can move of above-mentioned spacing in the rows speed change switching mechanism 115 and be arranged on and this space cylindraceous 25a orthogonal direction on the cylindrical portion of the clutch housing 25 that plants seedlings in be provided with ball 116 and to three spring 117 of this ball 116 to the center axis reinforcing of spacing in the rows speed change switching mechanism 115, so when half of ball 116 is embedded among the first groove 115a of above-mentioned spacing in the rows speed change conversion equipment 115, then spacing in the rows speed change conversion equipment 115 becomes and can't move, in addition, make following structure: when drawing the switching mechanism 115 of spacing in the rows speed change with trying hard to recommend of the active force that surpasses this ball 116 and the 3rd spring 117, then half of ball 116 is embedded into the second groove 115b as other groove of spacing in the rows speed change switching mechanism 115, in any of the 3rd groove 115c and the 4th groove 115d, and on this position, keep spacing in the rows speed change switching mechanism 115.

In addition, be fixedly connected on plate 115e in the spacing in the rows speed change switching mechanism 115 owing to be configured in each other fastening between the gear 96 of locational first gear 95 and middle footpath side by side in the one on the power shaft 92 at movable fit, so is the action of benchmark front and back by making spacing in the rows speed change switching mechanism 115 with the body direction of advance, and by plate 115e first gear 95 and second gear 96 of spline fitted on power shaft 92 is moved up integratedly at right and left.

Variable speed switch clutch 110 usefulness be arranged on the outside of the clutch housing 25 that plants seedlings variable speed handover operation instrument 119 the arrow (I) of Fig. 7 or (II) direction be free to slide.

In addition, be provided with the clutch 91 that plants seedlings in the clutch housing 25 that plants seedlings of the output end side of output shaft 101, the clutch back shaft 91a that plants seedlings that an end is supported on the clutch 91 that plants seedlings on the inwall of the clutch housing 25 that plants seedlings always carries out reinforcing to the clutch 91 that plants seedlings to the second spring 91b of the central part side reinforcing of the clutch housing 25 that plants seedlings.In addition, the output end of making the end of housing central part side of the clutch 91 that plants seedlings and output shaft 101 can utilize the structure of first clutch pawl 91c and second clutch pawl 101a fastening mutually.In addition, owing on the peripheral part of clutch 91 that plants seedlings, being provided with active force that the pushing that utilizes the pin 91d that plants seedlings surpasses the second spring 91b clutch 91 that plants seedlings is moved and the inclined wall 91e that tilts of output shaft 101 directions relatively to the output end of the clutch housing 25 that plants seedlings, thereby become the structure of fastening of second clutch pawl 101a and the first clutch pawl 91c clutch 91 that plants seedlings of the output end of the above-mentioned output shaft 101 of releasing.

The spacing in the rows speed change of utilizing the drive mechanism of the spacing in the rows speed change gear A of above-mentioned formation to be achieved as follows.

At first, remove the pushing of the clutch that plants seedlings that obtains by the on-of pin 91d that plants seedlings, utilize the active force of the second spring 91d to make in advance and plant seedlings clutch 91 fastenings on output shaft 101.

Secondly, make the 5th clutch claw 104a fastening of the side of the 6th clutch claw 110a of variable speed switch clutch 110 and the 5th gear 104 on the output shaft 101 in advance, when making spacing in the rows speed change switching mechanism 115 (spacing in the rows speed changer) be in ball 116 to enter into the state of the first groove 115a of illustrated high-speed side, if variable speed handover operation instrument 119 makes switching mechanism 121 move to arrow (II) side, if make the 6th gear 105 engagements on first gear 95 on the power shaft 92 and the output shaft 101, then carry out the most at a high speed transmission of power by the 6th gear 105 and variable speed switch clutch 110 and via 101 pairs of the output shafts clutch 91 that plants seedlings.

In addition, when utilizing variable speed handover operation instrument 119 to make switching mechanism 121 near arrow (II) side, if being in ball 116, spacing in the rows speed change switching mechanism 115 enters state among the second adjacent groove 115b of the illustrated first groove 115a the most at a high speed, then utilize plate 115e to right-hand slip, the 7th gear 108 engagement on second gear 96 on the power shaft 92 and the output shaft 101 is carried out transmission of power via 101 pairs of the output shafts clutch 91 that plants seedlings with the second high speed from variable speed switch clutch 110.

Have again, when variable speed handover operation instrument 119 makes switching mechanism 121 near arrow (II) side, if being in ball 116, spacing in the rows speed change switching mechanism 115 enters state from the 3rd the 3rd groove 115c of the illustrated first groove 115a, the then four clutches pawl 97a fastening of the three-clutch pawl 96a of second gear 96 on the power shaft 92 and the 3rd gear 97, octadentate wheel 109 engagements on the 3rd gear 97 and the output shaft 101 are by the 7th gear 108, the 6th gear 105, the 5th gear 104, variable speed switch clutch 110 also carries out the transmission of power of the 3rd high speed via 101 pairs of the output shafts clutch 91 that plants seedlings.

In addition, make switching mechanism 121 to arrow (I) side shifting at variable speed handover operation instrument 119, and make the switching mechanism 115 of spacing in the rows speed change when ball 116 enters state among the 4th groove 115d of illustrated lowest speed and moves, then take turns 109 transmissions by the 3rd gear 97 on the power shaft 92 and the octadentate on the output shaft 101, the 4th gear 99 engagements on the 5th gear 104 on the output shaft 101 and the power shaft 92 are arranged again, and first eccentric gear 100 from the power shaft 92 that is always meshing and second eccentric gear 112 on the output shaft 101 and variable speed switch clutch 110 are via the plant seedlings transmission of power of lowest speed of clutch 91 of the output shaft 101 with these variable speed switch clutch 110 unitary rotation.

Owing to utilize the engagement of first eccentric gear 100 and second eccentric gear 112, seedling-planting device 52 operating rate when the work of comparing when planting seedlings in addition is slack-off, so carry out variable-speed motion.

Usually, for example when setting spacing in the rows with wide interval, then owing to plant seedlings with the variable speed state, so the clutch 91 that plants seedlings is pulsed, especially when advancing at utmost speed, pulsation increases easily.

So, in the present embodiment, shown in the stereogram of the end view of Fig. 8 (a) and Fig. 8 (b), being fulcrum at the spacing in the rows bar 123 on the right side at the seat 31 that will be configured in body with center of rotation 123d operates and then makes spacing in the rows when broadening a side shifting to the arrow C direction, then the arm 123a with spacing in the rows bar 123 one makes spacing in the rows speed change switching mechanism 115 shown in Figure 7 move to appropriate location (ball 116 enters into the 4th groove 115d of Fig. 7), fixedly the plant seedlings operating position of clutch 91, be connected on the end of base portion of gear lever 124 in the speed change zone of setting driving transmission by making simultaneously as front end with the vehicle-speed limit arm 123b of the restraint device of spacing in the rows bar 123 one, thereby restriction gear lever 124 is shaking of center with axis of rocking 124a, restricted speed makes the stabilisation of planting seedlings.

In addition, adopt following structure: promptly, operation with manual selection will by gear lever 124 be used as the secondary gear lever 125 (with reference to Fig. 9) between arbitrary speed-change area of secondary speed-changing device that speed interval speed change that the Hyaulic infinite variable speed mechanism 23 of speed change gear sets is high, medium and low any and speed-change area when speed change one-tenth travels as the road between the speed-change area of used operating speed when planting seedlings between translational speed, then can remove vehicle-speed limit.

Fig. 9 represents the structure for this reason made, with secondary gear lever 125 to the arrow D of Fig. 9 direction operation and when plantation speed speed change is translational speed, then by metal wire 126, the vehicle-speed limit arm 123b that is installed on the spacing in the rows bar 123 is that middle mind-set arrow B direction (Fig. 8, Fig. 9) is rotated with its rotating shaft 123e, vehicle-speed limit arm 123b from the moving area M of gear lever shown in Figure 8 124 to the left and right direction leave, thereby can remove vehicle-speed limit.

Have again, as shown in Figure 8, above-mentioned rotating shaft 123e is supported on an end from the pronathous protuberance 123f of spacing in the rows bar 123, even if also can be afterburning so that rotate when turning back to state shown in Fig. 8 (b) supported freely to it by not shown spring with the rotation support tube 123c of portion of metal wire 126 tractives and vehicle-speed limit arm 123b one.

Send seedling band 51b to move in order to make to the farmland direction, on seedling carrying base 51, be provided with the supply roll 60 (driving shaft of pulley 64) that has one-way clutch, shown in the major part resolution chart of the seedling carrying base of representing as Figure 10 51 like that, make and send the supply roll 60 usefulness linkages of seedling band 51b action to be connected with the seedling countershaft 62 that send of disposed adjacent.Promptly, at the base portion that send fixed joint armshaft 62a on the seedling countershaft 62, on the leading section of this countershaft arm 60a, rotate and connect an end that send seedling arm 60b freely, this send the other end of seedling arm 60b to rotate the feed shaft sheet 60a that is fastened on freely on the supply roll 60.In addition, in order to make auxiliary 62a because of being no more than fulcrum, prevent to surpass the dead point with block 63 sending to be provided with near the seedling countershaft 62 with the annexation of sending seedling arm 60b.Therefore, the hunting range (arrow E) of sending seedling countershaft 62 is with the confined while of the scope that is no more than fulcrum, can make supply roll 60 move (pendulum angle of the pendulum angle of arrow E＜arrow F) in hunting range (arrow F) by sending seedling arm 60b.

Owing to utilize said structure will send the hunting range of seedling countershaft 62 to be limited in the scope that is no more than fulcrum, thus when preventing to surpass the dead point by strengthening the hunting range of supply roll 60 with linkage, thereby can obtain the big seedling amount of sending with little space.All the time,, block of no use prevents to surpass the such hunting range of fulcrum, so linkage itself must not be constant big because setting.

In addition, shown in the stereogram of Figure 11, by the spring 60c with active force of returning to the arrow C direction give supply roll 60 is set in advance, thereby has the effect that makes supply roll 60 reset to original position easily on the one-way clutch of supply roll 60.

By drive chain shown in Figure 12 47 transferring power, these drive chain 47 utilizations are supported on the tension force degree that leaf spring 48 on the transmission housing 50 can be adjusted drive chain 47 to not shown drive division in the transmission housing 50 to seedling-planting device 52.

In addition, by make simultaneously from the outside of transmission housing 50 to inner and with the direction of drive chain quadrature on can insert the leading section and leaf spring 48 butts of the bolt 49 of dismounting, thereby can adjust the tension force degree of drive chain 47.

So, keep drive chains 47 by use bolt 49 with suitable tension state, thereby can prevent the lax of unwanted drive chain 47, can improve the action pulsation of seedling-planting device 52.

In addition, as shown in figure 13, can also make from the outside of transmission housing 50 to inner and with the direction of drive chain 47 quadratures on can insert the leading section of dismounting ground construction bolt 49, and be used for bolt stop and run through the hole of lock nut 45, and the structure of sealing with cap 45a.

In addition, as shown in figure 14, fuel tank 28 can also be installed in body the place ahead, the bumper portion in the body front is provided with double as fuel tank guard block 2a and the boarding parts of assisting step 2b again.By adopting this structure, can access the beneficial effect of equipment cost reduction and outward appearance aspect.

In addition; by will being installed between boarding on the fuel tank guard block 2a is arranged on official's altitude datum of secure authentication etc. and fuel tank 28 with the height of auxiliary step 2b the smallest height of fuel supply port 28a (comprising pipeline portions), thereby also can prevent the breakage of the fuel supply port 28a of fuel tank 28 when can break away from the official altitude datum of secure authentication etc.

Utilizability on the industry

According to the present invention, though can access obtain wider spacing in the rows also can provide the plantation precision effectively Seedling transplanter.

Claims

1. a seedling transplanter has: running vehicle body (2); The engine (20) of lift-launch on this running vehicle body (2); Power from this engine (20) is carried out speed change and changes the speed change gear (23) of the travel speed of running vehicle body (2); And the gear lever (124) that makes this speed change gear (23) action and change travel speed, the portion of planting seedlings (4) that will have the seedling-planting device (52) that plants seedlings to the farmland kind is attached at the rear portion of running vehicle body (2), it is characterized in that,

Have: the plantation spacing in the rows speed change gear (A) at interval that changes seedling;

With the relative operating rate of travel speed first eccentric gear (100) and second eccentric gear (112) that when this seedling-planting device (52) is planted seed in the farmland, carry out transmission rapidly of seedling-planting device (52);

Make this spacing in the rows speed change gear (A) carry out the spacing in the rows bar (123) of gear shifting operation; And

If will operate a side of widely setting by the spacing in the rows that spacing in the rows bar (123) obtain, then limit the restraint device (123b) of gear lever (124) to the speed change of high-speed side.