CN1268195C

CN1268195C - Working machine for paddy field

Info

Publication number: CN1268195C
Application number: CNB031327389A
Authority: CN
Inventors: 园田义昭; 松村哲也
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2003-03-27
Filing date: 2003-09-30
Publication date: 2006-08-09
Anticipated expiration: 2023-09-30
Also published as: KR100534507B1; CN1533690A; KR20040086520A

Abstract

The paddy field working machine includes a fertilizer applying unit mounted to a self-propelled vehicle. The fertilizer applying unit has a hopper for storing a fertilizer, a fertilizer dispatching unit installed to a lower portion of the hopper for dispatching the fertilizer, and a blower for producing a carrying wind to the fertilizer into a fertilizer applying port from the fertilizer dispatching unit. An intake port of an intake duct connected to a suction portion of the blower is placed adjacent to an exhaust muffler. The intake port is opened toward an inside of the vehicle.

Description

Working in paddy field

Technical field

The present invention relates to working in paddy field such as rice transplanter.In more detail, the present invention is a kind ofly carried fertilizer apparatus at bicycle working in paddy field on one's body, aforementioned fertilizer apparatus comprises the hopper of storing fertilizer, the fertilizer output device of being located at the bottom of aforementioned hopper, the fertilizer of storing being exported from this hopper, and produce from this fertilizer output device and give the trench digging fan blower that transports wind that fertilizer applicator is used with fertilizer supply.

Background technology

In above-mentioned working in paddy field, when the fertilizer output device to the path of trench digging fertilizer applicator supply fertilizer dewfall takes place, when perhaps fertilizer made moist, fertilizer can be attached on the feed lines, and it is bad and stop up that carrying takes place.

Therefore, in the prior art, for example, there is the spy of Japan to open the described agricultural work vehicle (particularly, with reference to paragraph (0007) (0009), Fig. 2 and Fig. 4) that fertilizer apparatus is housed of 2002-45017 communique.In the prior art, to be located at high temperature air on the periphery of engine exhaust muffler draws cover and is connected on the air drawn mouth of fan blower with the high temperature air suction tube, attract muffler high temperature air on every side with fan blower, make it to produce fertilizer carrying wind.That is, by the supply fertilizer carrying wind higher, so that fertilizer and fertilizer supply path drying than the temperature of extraneous air.

In above-mentioned working in paddy field, the situation that can be made of resin hose is agley arranged to the feed lines of the fertilizer applicator of ditching.But, under the situation of this structure, when the temperature of the fertilizer supplied carrying wind is too high, troubles such as the softening or distortion in fertilizer supply path take place easily.

Therefore, when the air-supply structure that adopts above-mentioned prior art constitutes working in paddy field, for example, need be provided with the extraneous gas suction pipe that will have flow rate regulating valve be connected to high temperature air draw cover go up, by extraneous gas being sneaked in the high temperature air etc. make the thermoregulation mechanism that the temperature that sucks the air in the fan blower can be not too high, this is disadvantageous from the angle of structure and the angle of cost.In addition, in the time of the air drawn cover can not being made very big owing to the reason that the aspect, space is set, particularly under the many situations of the ridge of rice transplanting number, the deficiency of the supply of fertilizer carrying wind takes place easily.

Therefore, the purpose of this invention is to provide a kind of working in paddy field of eliminating above-mentioned inappropriate part, described working in paddy field, can supply the fertilizer carrying wind that utilizes the heat that engine discharges and temperature has been risen, being difficult for producing temperature gives rise to trouble or the supply deficiency, and be favourable, and then can avoid the trouble of intaking in the intake guide from the angle of structure and cost.

Summary of the invention

In order to achieve the above object, feature structure of the present invention is, the air entry of the intake guide that is communicated with the suction unit of aforementioned fan blower be configured in engine muffler near, and towards the interior of body opening.The what is called here " towards interior of body " is meant the direction of leaving body exterior profile (double dot dash line among Fig. 4) in plan view (Fig. 4).

According to this structure, near air inflow intake guide muffler that heats up being heated on every side of engine exhaust muffler is attracted by fan blower, and fertilizer carrying wind takes place.Whereby, the air that is heated as high temperature by muffler the periphery of the air entry of intake guide be attracted after the air of q.s mixes, thereby become fertilizer carrying wind, so, can not become the softening temperature that waits baneful influence that causes the fertilizer supply path, even at rice transplanting ridge number for a long time, also be difficult for taking place under-supply situation.

And, because the air entry of intake guide is towards the interior of body opening, under the situation,, also be difficult to enter the inside of intake guide in the vehicle body lateral when carwash for example etc. even water disperses.Thereby, guarantee the drying regime of intake guide.

Thereby, according to feature structure of the present invention, the fertilizer carrying wind that the heat that supply utilizes engine to discharge has risen temperature, reaching the drying in fertilizer supply path etc., and, can avoid the too high and under-supply situation generation of temperature of fertilizer carrying wind.In the fertilising operation, the softening and fertilizer that is difficult for generation fertilizer supply path can not reach the problem of trench digging fertilizer applicator.And then because water is difficult for entering intake guide, so intake guide and fan blower are not easy damage and also are difficult for breaking down, and have durability.And feature structure of the present invention is by only the air entry of intake guide being configured near the muffler and can this very simple structure and just can reach with cheap price towards the interior of body opening.

Except that said structure, when the air entry of aforementioned intake guide when the output variable speed with engine is delivered to hydrostatic formula stepless speed change device ground configuration on the running vehicle wheel, following advantage is arranged.The running vehicle wheel here comprises front-wheel or trailing wheel or both.

According to this structure, the air that the heat temperature that flows around hydrostatic formula stepless speed change device, produce because of stepless speed change device has risen attracted in the intake guide via aforementioned air entry, attracted in the fan blower then.Thereby, can supply effectively and utilize the heat that produces in the stepless speed change device and fertilizer carrying wind that temperature has risen.In addition, owing to attract effect, the stepless speed change device ambient air flows easily, so, can carry out the air cooling of stepless speed change device easily.Thereby, utilize heat that engine discharges and the structure of the fertilizer carrying wind that temperature has risen can also be used for the air cooling that promotes stepless speed change device owing to produce, so, the intensification of stepless speed change device can be prevented at an easy rate.

In addition, more preferably, the air entry of aforementioned intake guide is configured in the downwind side of being located at the cooling blower on the aforementioned hydrostatic formula stepless speed change device.According to this structure, the blower fan air-supply because the air of cooling stepless speed change device is cooled is so described air simultaneously utilizes this cooling blower to flow and simultaneously arrives air entry, attracted to intake guide from air entry.Thereby the air that cooling stepless speed change device and temperature have risen is drawn in the intake guide expeditiously, can be easy to be used as expeditiously carrying wind.And the cooling air of stepless speed change device is more prone to mobile, can efficient more cool off stepless speed change device in the highland.

In one embodiment of the invention, aforementioned fan blower is provided in the substantial middle of vehicle body, and will distribute from the fertilizer carrying wind that this fan blower comes and be supplied to along the ajutage of vehicle body horizontal direction a plurality of fertilizer output devices arranged side by side, cut apart the ajutage of cutting apart that the single tubing that constitutes on aforementioned each the fertilizer output device be connected to the vehicle body left side makes, be connected to the ajutage of cutting apart that single tubing on aforementioned each fertilizer output device on vehicle body right side makes, and be connected to two and cut apart on the ajutage, to distribute to the distribution supply pipe of respectively cutting apart dispersion pipe from the fertilizer carrying wind that aforementioned fan blower comes.

According to this structure, when maintenances such as the cleaning of carrying out ajutage, by with about cut apart ajutage and distribute supply pipe to decompose, compare when ajutage maintains with the state of the length of distributing supply pipe to interconnect with intactly keeping respectively cutting apart, the processing of ajutage is more prone to.Thereby, can maintain operation expeditiously, and can improve crudy.

In addition, because fan blower is configured in the substantial middle of vehicle body, so, whole ajutages of balance well, and, can be configured compactly.And, about cut apart between the ajutage supply of the wind that produces by fan blower and utilize this wind carrying capacity that fertilizer is sent to be set or the difference of fertilizer carrying amount can be impartial basically from fertilizer.

In the ajutage structure of this partition type, when being formed with rectification part on the ajutage integratedly in aforementioned respectively cutting apart, described rectification part leads to the fertilizer carrying wind from aforementioned distribution supply pipe, when making its carrying wind supply opening that flows into aforementioned each fertilizer output device, from angle described below, be more favourable.

A plurality of carrying wind supply openings are arranged cutting apart on the length direction of ajutage.If employing utilizes this rectification part that fertilizer is carried wind and is directed to the structure of respectively carrying in air-supply supply opening, utilize its rectified action, can suitably fertilizer be carried wind and be distributed between a plurality of fertilizer supplies path, can be easy to flow into as far as possible equably.Thereby, be difficult for taking place fertilizer and carry the distinguished and admirable wind supply opening of going into to carry, perhaps the air quantity that is flowed into each other by carrying wind supply opening produces big situations such as difference.Thereby it is bad that the fertilising that position difference because of fertilising causes that fertilizer is difficult to send to be difficult for to take place.

And, owing to this rectification part is shaped as the global facility of cutting apart ajutage with being integral, so, cut apart ajutage and remain simple ajutage.Thereby angle and economic angle from weight can advantageously obtain to cut apart ajutage.

In one embodiment of the invention, aforementioned fertilizer output device has by the rotation of built-in output roller the fertilizer of the output of the fertilizer in the aforementioned hopper is exported casing, aforementioned fertilizer output casing with the face of the axis of rotation that comprises aforementioned output roller as divisional plane, cut apart and constitute the upper portion that has to the coconnected connecting portion of aforementioned hopper, and the lower portion that has aforementioned carrying wind supply opening, aforementioned lower portion can support on the aforementioned upper portion around the pivot that the swing of second axis of rotation opens and closes.This feature structure has the following advantages.

That is, when fertilizer output casing is cut apart formation upper portion and lower portion, take out fertilizer output casing by opening below upper portion, the maintenance of this fertilizer output casing and fertilizer output casing becomes and is more prone to.

And upper portion pivots mutually with lower portion and is connected, and swings with respect to upper portion by making lower portion, can open below upper portion.Thereby, below opening, as long as make the part swing of casing below just passable from the casing upper section.On the contrary, when with following obturation, contact with the casing upper portion as long as swing to the casing lower portion.Thereby, at this moment, need not contraposition and the stance adjustment operation of lower portion with respect to upper portion.

In addition, as mentioned above, when fertilizer delivery casing system is become the segmenting structure that constitutes with upper portion and lower portion, when remaining on the seal of the connection connecting portion sealing of the aforementioned upper portion of this fertilizer output casing and lower portion on the lower portion, then more favourable.

Remain in the seal on the lower portion, under the situation of the blocked state that is in normal posture with respect to upper portion, by contacting and strain with the open circumferential portion of upper portion, imbed the gap of casing inner peripheral surface and seal periphery, seal the connecting portion that is communicated with upper portion.

Whereby, aforementioned fertilizer delivery casing system is become the segmenting structure of maintenance easily, the intrusion of water and as fertilizer sources are carried the leakage of wind air supplied in the time of can preventing obturation reliably, can guarantee the seal of casing.

In addition, the sealing part adopt its cross section for example be shaped as U font etc., to carry out seal juxtaposition metamorphose, that be big strain then better to make it to reduce the inner space state.

About according to the further feature structure of working in paddy field of the present invention and by this structure role effect and advantage, by the reference accompanying drawing and the explanation below reading can be more clear.

Description of drawings

Fig. 1 is the diagram of expression a kind of preferred implementation of the present invention, is the overall end view as the saddle type rice transplanter of an example of working in paddy field.

Fig. 2 is the general lay-out of this rice transplanter.

Fig. 3 is the rearview of fertilizer apparatus.

Fig. 4 is the plane of the configuration structure of expression intake guide.

Fig. 5 is the end view of fertilizer apparatus.

Fig. 6 is the front view of the major part of fertilizer follower.

Fig. 7 is the vertical profile end view of fertilizer follower.

Fig. 8 is the profile of ajutage.

Fig. 9 is the vertical profile end view of trench digging fertilizer applicator.

Figure 10 is the vertical profile front view of fertilizer follower.

Figure 11 is the plane of fertilizer follower casing.

Figure 12 is the vertical profile end view of the open and-shut mode of expression fertilizer follower casing.

Figure 13 is the plane of seal.

Figure 14 is the cross-sectional plane of the dismounting state of the residual fertilizer recovery tube of expression.

Figure 15 is the vertical profile end view of structure of the gathering sill of expression fertilizer supply pipeline.

Figure 16 is the cross-sectional plane of structure of the gathering sill of expression fertilizer supply pipeline.

Figure 17 is the cutout front view of expression guide-tube structure.

Embodiment

Below, based on saddle type rice transplanter, the preferred implementation according to working in paddy field of the present invention is described with reference to accompanying drawing as an example of working in paddy field.

As Fig. 1～shown in Figure 2, this six ridges rice transplanting formula rice transplanter comprises that pair of right and left can free steering operation and the front vehicle wheel 1 of driving, the rear wheel 2 that pair of right and left can freely drive, and the preliminary seedling storing apparatus 3 that is positioned at two horizontal sides of power part 10 with engine 11.On the vehicle body frame 5 of vehicle body 18 voluntarily, be provided with and have steering wheel (steeringwheel) 9 of steering operation front vehicle wheel 1 usefulness and the Drive Section of operator's seat 4.Seedling-transplanting device 20 is connected to the rear portion of this vehicle body 5 via linkage 6, can be by 7 liftings of fluid pressure type hydraulic cylinder.Pass to this seedling-transplanting device 20 from the driving force of aforementioned engine 11 via rotating shaft 8.In addition, vehicle body 18 voluntarily the rear side of operator's seat 4 near, in order to apply fertilizer when the rice transplanting and be provided with the fertilizer apparatus 30 of hopper 31.

When aforementioned lifting hydraulic cylinder 7 supply pressures are oily, by lifting hydraulic cylinder 7 linkage 6 is swung up and down with respect to vehicle body frame 5, aforementioned seedling-transplanting device 20 rises, simultaneously, the rice transplanter hull 21 that is connected to the ground connection on this seedling-transplanting device 20 is in the off working state that is elevated to the top from the ground in field.On the other hand, when oil extraction from hydraulic cylinder 7, seedling-transplanting device 20 descends because of weight, and the rice transplanting hull 21 of ground connection is in the decline that contacts with the ground in the field state of working simultaneously.

When seedling-transplanting device 20 in descent mode when vehicle body 18 travels voluntarily, seedling-transplanting device 20 is along a plurality of rice transplanting mechanisms 22 of fuselage horizontal direction arrangement and the rice transplanting campaign interlock of this rice transplanting mechanism 22, lower end from the rice shoot of bunch shape of mounting on the rice shoot mounting table of back and forth transferring along the horizontal direction of fuselage, cut off to take out the rice shoot piece that is equivalent to a strain, drop to rice transplanting on the ground in field.Meanwhile, utilize fertilizer apparatus 30, be stored near granular fertilizer in the hopper 31 carry out rice transplanting at each rice transplanting mechanism 22 the cross side of rice shoot, be supplied to the field from a plurality of trench digging fertilizer applicators 26 that are installed on the aforementioned ground connection rice transplanting hull 21.

As Fig. 3 and shown in Figure 5, aforementioned fertilizer apparatus 30 possesses with the lower part and constitutes.

At first, fertilising frame 14 is connected on the pair of right and left main car frame 5a of vehicle body frame 5 via pair of right and left fan blower support plate 12, pillar 14a etc.Fertilizer output device 40 is installed at a plurality of positions along the vehicle body horizontal direction in this fertilising frame 14.The bottom of the funnel type of aforementioned hopper 31 is communicated with the upper end of these a plurality of fertilizer output devices 40 respectively.Pair of right and left fertilizer is set in the bottom of each fertilizer output device 40 sends tube 41.Send both or one of them of tube 41 from fertilizer, fertilizer supply pipeline 32 is extended always be set to seedling-transplanting device 20 places (with reference to Fig. 1).Simultaneously, output driving device D utilizes from passing to of engine 11 and extends the driving force that is arranged on the rotating shaft 15 on the trailing wheel transmission case body 9, drives each fertilizer output device 40.In addition, only using a fertilizer to send tube 41 o'clock, another fertilizer is being sent tube 41 usefulness connector 41a stop up (with reference to Fig. 3).

As shown in Figure 1, the end that is positioned at seedling-transplanting device 20 sides of each fertilizer supply pipeline 32 is configured in by each rice transplanting mechanism 22 is undertaken near the cross side at position of rice transplanting each position, is communicated with a plurality of trench digging fertilizer applicators 26 on the rice transplanter hull 21 that is installed in ground connection respectively.The flexible resin flexible pipe 32a that each fertilizer supply pipeline 32 is crooked by the lifting that is accompanied by seedling-transplanting device 20 and the fertilizer supply pipe 32b of the resin control that this resin hose 32a is connected with trench digging fertilizer applicator 26 constitute.

Constitute fertilizer supply for the organization of supply of carrying wind of aforementioned trench digging fertilizer applicator 26 usefulness such as Fig. 2～Fig. 5 and mode shown in Figure 7.That is, an ajutage 50 extends setting towards the vehicle body horizontal direction, and this ajutage 50 is communicated with the carrying wind supply opening 48 of pair of right and left towards vehicle body the place ahead of the bottom that is arranged on each fertilizer output device 40.Electric blower (example of fan blower is referred to as fan blower below simply) 54 discharge portion 54b is communicated with the central portion of the length direction of ajutage 50.This fan blower 54 is cfentrifugal blowers, with about about side by side in the aforementioned fertilizer output device 40 of configuration the state of the following quadrate part between inboard two be installed on the vehicle body frame 5.

In addition, this fan blower 54 is supported by whole aforementioned pair of right and left fan blower support plate 12, and, on vehicle body left and right directions and vehicle body fore-and-aft direction, all be configured in substantial middle portion.The suction unit 54a of fan blower 54 is towards the foreign side of vehicle body horizontal direction, and the base end side of intake guide 55 (rear end side) is connected on this suction unit 54a by connecting duct 56.The most advanced and sophisticated side (front) of intake guide 55 is positioned at power part 11 places, forms air entry 55a.

As shown in Figure 1 and Figure 4, aforementioned intake guide 55 is made of the resinous round tube of bending forming.In more detail, intake guide 55 is a level in its most advanced and sophisticated side when vehicle body side is observed basically, and base end side is offside on higher height the closer to the vehicle body rear, tilts to the back upper place.When the vehicle body above-below direction is observed, intake guide 55 with base end side along vehicle body fore-and-aft direction, most advanced and sophisticated side to tilt to front cross foreign side the closer to the offside mode of vehicle body front side in lateral outer side.This intake guide 55 is along the below of vehicle body fore-and-aft direction by the floor of Drive Section, and the opening of its base end side is communicated with the suction unit 54a of aforementioned fan blower 54 by aforementioned connecting duct 56.

When being assembled into intake guide 55 on the vehicle body frame 5, the air entry 55a of most advanced and sophisticated side is positioned at than on the low configuration height of the configuration height of the suction unit 54a of fan blower 54.By such configuration, even water enters in the air entry 55a of intake guide 55, this water also is difficult to flow in the air entry 54a that is in the fan blower 54 of high position more.Thereby fan blower 54 is not easy to break down.

The suction hole 55a of the intake guide 55 that is communicated with the suction unit 54a of aforementioned fan blower 54 be configured in the engine exhaust muffler 11a that is positioned at power part 11 the vehicle body rear side near, and, towards the interior of body opening.

In addition, this air entry 55a is positioned at the rear of engine 11, pass to hydrostatic formula stepless speed change device 16 configurations of running vehicle wheel towards output variable speed, and be configured in the following crosswind of being located at the cooling blower 17 on this hydrostatic formula stepless speed change device 16 engine.

Aforementioned hydrostatic formula stepless speed change device 16 is by variable capacity type axial plunger type hydraulic pump (the displaceableaxial-typq hydaulic pump) (not shown) of power shaft 16a via the output shaft interlock of driving-belt 18 and engine 11, and utilization is from the hydraulic motor (not shown) formation of the pressure oil driving of this hydraulic pump.This hydrostatic formula stepless speed change device 16 will switch to from the driving force of engine 11 and move forward and backward, carry out infinitely variable speeds when advancing and when retreating, pass to and be positioned at travelling of gearbox body 19 and use the speed changer (not shown), travelling from this passes to front vehicle wheel 1 and rear wheel 2 with speed changer.

Aforementioned cooling blower 17 in aggregates being attached on the aforementioned power shaft 16a with rotating freely.The cooling air that is produced by this cooling blower 17 flows through the casing of hydrostatic formula stepless speed change device 16 along the vehicle body horizontal direction, and flows to the aforementioned air entry 55a of intake guide 55, thereby carries out the air cooling of hydrostatic formula stepless speed change device 16.

Carrying wind organization of supply will make the air of temperature rising because of engine exhaust muffler 11a, and send into the air entry 55a of intake guide 55 by cooling blower 17 because of hydrostatic formula stepless speed change device 16 makes air that temperature rises, the part of as fertilizer sources carrying wind is used.That is, carrying wind organization of supply mixes this warm braw of sending into by near the air the air entry 55a of the attraction one side of fan blower 54 and intake guide 55, simultaneously be drawn in the intake guide 55.Be inhaled into fan blower 54 by this mixing air, fan blower 54 produces the fertilizer carrying wind higher than normal temperature air temperature.Simultaneously, this fertilizer carrying wind is supplied to ajutage 50 from discharge portion 54b, distributes the carrying wind supply opening 48 that is supplied to each fertilizer output device 40 by ajutage 50, sends into the aforementioned fertilizer that is communicated with it from each carrying wind supply opening 48 and sends tube 41.

At aforementioned fertilizer apparatus 30 places, aforementioned output driving device D is by the fertilizer output roller 42 from the whole fertilizer output devices 40 of the drive force of aforementioned rotating shaft 15.Simultaneously, at each fertilizer output device 40, utilize fertilizer output roller 42 granular fertilizer of ormal weight to be outputed to each fertilizer and send tube 41 from hopper 31.The output quantity of unit interval is by the driving rotating speed decision of the volume and the fertilizer output roller 42 of the output recess (not shown) on the side face of being located at fertilizer output roller 42.The fertilizer of this output is sent tube 41 from fertilizer and is supplied to trench digging fertilizer applicator 26 by fertilizer supply pipeline 32 by the fertilizer carrying wind by the ajutage 50 of carrying the wind organization of supply.Simultaneously, this trench digging fertilizer applicator 26 drops in the ditch that the cross side of the rice shoot of the rice transplanting of the earth portion in field is opened fertilizer.Like this, utilize the fertilizer higher to carry wind with fertilizer and fertilizer supply path 32 dryings, the operation of applying fertilizer than the temperature of normal temperature air.

The conduit 56 that the base end side of aforementioned intake guide 55 is connected on the fan blower 54 is made of the conduit than intake guide 55 softnesses.According to this structure, for intake guide 55, make the conduit of comparison hard, be not easy to take place distortion that the vibration etc. because of travelling causes etc., perhaps, even because the position relation of the making of intake guide 55 and fan blower 54 and intake guide 55 that assembly error causes and fan blower 54 changes or deviation, the bending and the strain of the connecting duct 56 by softness also can absorb described variation and deviation.Thereby, can connect reliably, the connection operation becomes and is more prone to.

As shown in Figure 3, aforementioned air-supply conduit 50 comprises a distolateral ajutage 60 of cutting apart that constitutes this ajutage 50, constitute another of ajutage 50 distolateral cut apart ajutage 60, and cut apart ajutage 60 with described pair of right and left and separate the distribution supply pipe 70 that is made into independent parts.Below, this segmenting structure of ajutage 50 is described.

As shown in Figure 8, cut apart ajutage 60 via being connected to respectively along its length direction a plurality of conduit connecting holes 61 arranged side by side on half the carrying wind supply opening 48 that is positioned at vehicle body left side in the aforementioned conduit fertilizer output device 40 for one.In addition cut apart ajutage 60 via being connected to respectively along its length direction a plurality of conduit connecting holes 61 arranged side by side on half the carrying wind supply opening 48 that is positioned at the vehicle body right side in the aforementioned conduit fertilizer output device 40.

Respectively cut apart ajutage 60 and on the one end, have introducing port 62, constitute by plastic single tubing.On the aforementioned connecting hole 61 residing parts of respectively cutting apart ajutage 60, be formed with rectification face 63a integratedly.Specifically, the part of the pipe that to be arranged in rectification part 63 of being shaped simultaneously when cutting apart ajutage 60 by shaping, this rectification face 63a integratedly is shaped.This rectification face 63a is so that the mode the closer to the axle center of the length direction of cutting apart ajutage 60 tilts the closer to the bottom (right side among Fig. 8) of wind.

Distribute supply pipe 70 be included in both end sides have outlet 71 towards the horizontal discharge pipe portion 72 of vehicle body and stretch out, have the importing tube portion 74 of introducing port 73 at external part to vehicle body the place ahead from the central portion of this discharge pipe portion 72.The medial end that the pair of right and left of clamping expelling tube portion 72 is cut apart ajutage 60 interconnects each other.In addition, a pair of outlet 71 is cut apart ajutage 60 with pair of right and left respectively and is communicated with.Importing tube portion 74 is connected on the discharge portion 54b of fan blower 54 at its importing oral area 73 places.Be provided with the shunting guide 75 of pair of right and left inclined guide surface 75a in the inside of the central portion of discharge pipe 72.

As shown in Figure 7, in each fertilizer output device 40, accommodate fertilizer output roller 42.Fertilizer output casing is made of with the chest portion 44 that is connected to the vessel side on the hopper 31 the cylinder side box body portion that has carrying wind supply opening 48 (being equivalent to fertilizer output casing) 43.

Aforementioned cylinder side box body portion 43 with about towards, the horizontal plane Y of the axis of rotation that comprises output roller 42 or the first axis of rotation x is as divisional plane, cut apart to constitute upper portion 43U and lower portion 43L.Promptly, lower portion 43L makes as the different parts of the upper portion 43U that is made into integration with chest portion 44 with vessel side.

On aforementioned upper portion 43U, be equipped with the connecting portion that is communicated with aforementioned hopper 31, form aforementioned residual fertilizer outlet 82.

Aforementioned carrying wind supply opening 48 of formation and fertilizer are sent tube 41 on aforementioned lower portion 43L, and maintain seal 86.As Figure 12 and shown in Figure 13, when sealing part 86 is in normal posture with upper portion 43U obturation, by contacting and strain with the open circumferential portion of upper portion 43U, be formed at the inner space 86a in the gap between the periphery of casing inner peripheral surface and seal 86 by minimizing, the connecting portion that will be communicated with sealing with upper portion 43U.

It is encapsulant U font etc., that reduce the 86a of inner space portion, big strain during juxtaposition metamorphose in large quantities that sealing part 86 for example can adopt as shown in figure 13 shape of cross section.Whereby, make the cut apart formation of cylinder side box body portion 43 for keeping in repair easily of as fertilizer sources output casing, can prevent the leakage of as fertilizer sources carrying wind air supplied reliably, can guarantee the airtight performance of casing.

Simultaneously, aforementioned lower portion 43L is shown in Figure 12 (a) and (b), and can freely swing pivots to support with opening and closing is connected on the upper portion 43U.That is, lower portion 43L can around with aforementioned about towards axle center x parallel about second towards axle center (casing swinging center) x 2 easy on and off swingingly be installed on the upper portion 43U.In addition, on this lower portion 43L, form pair of right and left breech lock 43b.When lower portion 43L swung to inaccessible posture, each breech lock 43b remained on inaccessible posture by being formed at the holding section 43a elasticity engaging automatically on the aforementioned upper portion 43U with lower portion 43L.Each breech lock 43b can engage operation and remove the operation that engages with hand.

Respectively cutting apart ajutage 60 usefulness flexible pipes constitutes.Adopt this structure, even separate with carrying air-supply supply opening 48 in order the ajutage 60 of cutting apart that good seal ground is connected such as to clean, also need not to spend releasing and the sealing once more that the special time seals, just can return to the connection status of good seal.Thereby, can be easily and cut apart the dismounting operation of ajutage and carrying wind supply opening expeditiously.

In more detail, as Fig. 7～shown in Figure 8, when the lower portion 43L of the aforementioned cylinder side box body 43 of each fertilizer output device 40 around aforementioned about second towards axle center x2 from upper portion 43U swing, when opening and closing, be installed on the lower portion 43L carrying wind supply opening 48 along with aforementioned about second towards axle center x2 be the motion track of the circular arc at center, relatively move along the vehicle body fore-and-aft direction with respect to cutting apart ajutage 60.Because when carrying out this relatively moving, in the peripheral part effect of connecting hole 61 operating physical force is arranged from carrying wind supply opening 48, so, this peripheral part strain.By this strain, carrying wind supply opening 48 can be extracted from connecting hole 61, also can enter this connecting hole 61.

Utilize said structure, the fertilizer carrying wind that ajutage 50 will be discharged from the outlet 54b of fan blower 54 imports to and distributes supply pipe 70, utilizes the inclined guide surface 75a of the pair of right and left of shunting guide part 75 to shunt, change direction to about vehicle body.The fertilizer carrying wind that is diverted to the left side is cut apart ajutage 60 from what left side outlet 71 was sent to the left side, and the fertilizer carrying wind that is diverted to the right side is cut apart ajutage 60 from what right side outlet 71 was sent to the right side.Simultaneously, about each cut apart in the ajutage 60, will distribute from the fertilizer carrying wind that distributes supply pipe 70 be supplied to a plurality of carrying wind supply openings 48.

At this moment the fertilizer carrying wind at first one side (left Fig. 8) along the axis direction of cutting apart ajutage 60 from introducing port 62 places of cutting apart ajutage 60 flows to another distolateral (right-hand among Fig. 8), secondly, this fertilizer carrying wind is altered to towards the vehicle body rear by the inclination rectification face 63a of rectification part 63, enters carrying wind supply opening 48.At this moment, by guiding, the rectified action of inclination rectification face 63a, fertilizer carrying wind is distributed in the conduit carrying wind supply opening 48 as far as possible equably, flows into and is supplied to and respectively carry wind supply opening 48.

On Figure 17, express the detailed syndeton of distributing supply pipe 70 and respectively cutting apart ajutage 60.Be described in greater detail below.

By making both contrapositions become the state of concentric, load takes over 97 inside and outside the scope that spreads all between the two, carries out the discharge pipe portion 72 of aforementioned distribution supply pipe 70 and being connected of the introducing port 62 of cutting apart ajutage 60.By only preventing that at discharge pipe portion 72 places this tube connector 97 from coming off, and can separate both.Simultaneously,, cutting apart on the ajutage 60, projection 98 is being set on its outer peripheral face continuously for tube connector 97 being fixed on the link position in the scope that spreads all between the two.On the other hand, on tube connector 97, form slide-and-guide groove 99 and circumferential slot 100.When tube connector 97 when cutting apart ajutage 60 and be in the rotation posture of setting, move in the slide-and-guide groove 99 by making projection 98, tube connector 97 is moved along the axle center of cutting apart ajutage 60.When tube connector 97 was positioned on the link position of axis direction, tube connector 97 was along the amount of circumferential slot 100 rotation regulations.Whereby, stop tube connector 97 moving along the length axle center of cutting apart ajutage 60.That is, circumferential slot 100 prevents that at the link position of tube connector 97 this tube connector 97 from coming off from cut apart ajutage 60.

In addition, ajutage 50 is divided into pair of right and left and cuts apart ajutage 60, and distributes supply pipe 70 to amount to 3 pipes, become can dismounting with respect to fertilizer output device 40 structure.Thereby, when ajutage 60 is cut apart in dismounting, and in cleaning or when changing the fertilizer output roller 42 etc. of fertilizer output device 40, by with the chest portion 43 of cylinder side around axle center x with respect to descend swing and opening it of vessel side chest portion 44, carrying wind supply opening 48 one sides of fertilizer output device 40 make the peripheral part strain of the connecting hole of cutting apart ajutage 60, and one side is extracted from cut apart ajutage 60.Whereby, make and cut apart ajutage 40 and separate, and the inside of the cylinder side box body portion 43 of fertilizer output device 40 can be opened wide with fertilizer output device 40.

On the contrary, make the connecting hole peripheral part strain one side of cutting apart ajutage 60 will carry wind supply opening 48 by one side and insert connecting hole 61, can be connected with fertilizer output device 40 cutting apart ajutage 60.After the connection, cut apart the connecting hole peripheral part elastic recovery of ajutage 60, cut apart ajutage 60 and be adjacent to mutually with carrying wind supply opening 48, so, cut apart ajutage 60 and be connected on the fertilizer output device 40 in the mode that is difficult for spilling fertilizer carrying wind.

The distance from an end of cutting apart aforementioned introducing port 62 sides on the ajutage 60 to each connecting hole 61 and the rectified action of each rectification part 63 are identical with another described distance and rectified action of cutting apart on the ajutage 60.That is, cut apart in the ajutage 60, cut apart ajutage 60 for one and cut apart ajutage 60 with another and make with identical specification in pair of right and left.Thereby, even the ajutage 60 of cutting apart of cutting apart ajutage 60 and right side in left side is changed mutually to be connected to and is distributed on the supply pipe 70, with change before the same, also can supply fertilizer with respect to any one fertilizer output device 40 of the left and right sides and carry wind.Thereby, do not cut apart ajutage even do not make two kinds that the left side is used and the right side is used, only make a kind of ajutage of cutting apart, assemble by cutting apart ajutage two, just fertilizer can be carried wind and be supplied to whole fertilizer output device rightly.In addition, owing to can only make a kind of ajutage of cutting apart, so aspect cost, be favourable.

As shown in Figure 7, each fertilizer of each fertilizer output device 40 is sent tube 41 inner peripheral surface and is shaped as straight-tube shape.Whereby, carry wind from the fertilizer of carrying wind supply opening 48 supplies and be subjected to easily sending the flow resistances that tube 41 produces, can flow through the inside that fertilizer is sent tube 41 smoothly by fertilizer.Thereby fertilizer is difficult to be trapped in fertilizer and sends in the tube 41, can not produce the inhomogeneous of the obstruction of fertilizer and fertilizer.

As shown in Figure 9, the outlet 33 of the fertilizer supply pipe 32b of aforementioned fertilizer supply pipeline 32, promptly be connected to the end of trench digging on the fertilizer applicator 26 and be the closer to the place ahead of trench digging fertilizer applicator 26 and get over the shape that the highland tilts to the front upper place.By this inclination is set, outlet 33 is opening slightly forwards, discharges from the fertilizer clogging sensor 37 of fertilizer on the inner front wall of being located at trench digging fertilizer applicator 26 of fertilizer output device 40.Thereby even have attached to the fertilizer on this clogging sensor 37, also the fertilizer that can newly be discharged separates it from clogging sensor 37, is supplied to the field.Thereby, can avoid taking place the obstruction that causes because of fertilizer as best one can attached to clogging sensor, the operation of avoiding causing because of obstruction is interrupted, and can carry out farmland operation expeditiously.

Aforementioned each fertilizer output device 40 all has identical structure, as Fig. 4～Fig. 7 and the expression in detail of Figure 10 institute, on the hopper mouth of the funnel-shaped bottom portion that is formed at hopper 31, connect the cylinder side box body portion 43 that is provided with, and the connection that is interconnected, in this cylinder side box body portion 43, interior dress by around about towards axle center x rotation with the fertilizer hopper 31 in separately and the fertilizer output roller of exporting downwards 42 by every ridge.Two aforementioned fertilizer that are provided with on each of each fertilizer output device 40 are sent tube 41 and are connected on the fertilizer supply pipeline 32.Each fertilizer supply pipeline 32 be connected with two carrying wind supply openings 48 that each ridge forms tubular accordingly for the air-flow of accepting to send here from fan blower 54 via ajutage 50.Fertilizer is sent tube 41 and will be discharged to the output fertilizer that air-flow falls together on this fertilizer supply pipeline 32.Fertilizer output device 40 also has the residual fertilizer outlet 82 that the residual fertilizer that makes in this hopper 31 flows down discharge on the residual fertilizer recovery tube 81 on being connected to hopper 31.

And, fertilizer output device 40 as shown in figure 11, be equipped with: in the fertilizer supply path corresponding to the drum segment on each ridge supply fertilizer of fertilizer output roller 42, open and close first shutter 83 of its half slidingtype, open and close second shutter 84 of the slidingtype of its remaining half, and the residual fertilizer shutter 85 of butterfly that will lead to the fertilizer passage opening/closing of residual fertilizer outlet 82.Utilize this structure, under state with residual fertilizer obturation, by only opening first shutter 83, carry out the output of half amount, under this state, by opening second shutter 84, carry out full dose output, and, under with first shutter 83 and second shutter, 84 both closing state, by opening residual fertilizer shutter 85, the residual fertilizer in the hopper 31 flowed into downwards in the storage barrel (not shown)s etc. via residual fertilizer recovery tube 81 reclaim.

As Fig. 7 and shown in Figure 11, first shutter 83 and second shutter, 84 usefulness flexible materials are made, and simultaneously, are connected on the knob 79 in the outside of being located at hopper 31.By the push-and-pull operation of knob 79, first shutter 83 and second shutter 84 can be from 80 advance and retreat of the shutter spatial accommodation in the hopper 31, slips.Whereby, first shutter 83 and second shutter 84 can locking lead to drum segment the fertilizer path posture and be received in the shutter spatial accommodation 80 will and switch between the posture that opens in this fertilizer supply path.

Simultaneously, a fertilizer of the fertilizer output device 40 outside the left side is sent tube 41 and is given the left side outer trench digging fertilizer applicator 26 fertilizer supply, and the other fertilizer of the fertilizer output device 40 from the left side outside sends tins 41 with the trench digging fertilizer applicator 26 of fertilizer supply to left side central authorities.A fertilizer of the fertilizer output device 40 in the left side is sent tube 41 and is given the trench digging fertilizer applicator 26 in the left side (sending tube 41 without another fertilizer) with fertilizer supply.A fertilizer of the fertilizer output device 40 outside the right side is sent tube 41 and is given the right side outer trench digging fertilizer applicator 26 fertilizer supply, and the other fertilizer of the fertilizer output device 40 from the right side outside sends tins 41 with the trench digging fertilizer applicator 26 of fertilizer supply to right side central authorities.A fertilizer of the fertilizer output device 40 in the right side is sent tube 41 and is given the trench digging fertilizer applicator 26 in the right side (sending tube 41 without another fertilizer) with fertilizer supply.

Send tube 41 for amounting to two fertilizer that do not carry out fertilizer supply,, make the first corresponding shutter 83 and second shutter 84 carry out the obturation action together, make it not export fertilizer, simultaneously, add connector 41a (Fig. 3) in order to stop from supplying fertilizer here.

In addition, shown in Figure 14 (a) and (b), on aforementioned fertilizer output device 40, fixed mechanism is set, when engaging, the residual recovery tube 81 of aforementioned fertilizer and residual fertilizer outlet 82 be fastened on be communicated with connection status, on the other hand, when engagement release, remove this fixedly connected.In detail, this fixed mechanism is by the holding section 82a that is formed on the residual fertilizer outlet 82, and constitutes with a pair of breech lock 81a that the insertion connecting portion 81A of the residual fertilizer outlet 82 that inserts residual fertilizer recovery tube 81 is connected setting integrally.Simultaneously, when residual fertilizer recovery tube 81 being inserted residual fertilizer outlet 82, by each breech lock 81a automatically elasticity be engaged on the 82a of holding section, prevent that it from coming off from inserting connecting portion 81A.Each breech lock 81a can remove with hand.

Like this, by removable fixed mechanism is set, just can be easily promptly connects and separate with respect to the residual fertilizer outlet 82 of residual fertilizer recovery tube 81 without instrument.In addition, for the maintenances such as cleaning of residual fertilizer outlet 82, also can operating characteristics carry out well.

As Fig. 3 and shown in Figure 5, aforementioned fertilizer output roller 42 by with the transmission system interlock of seedling-transplanting device 20 about towards driving shaft 87, be driven linkedly via gear mesh 88.Between 88 pairs of driving shaft 87 and gears, be provided with carry out with from driving shaft 87 to the transmission ON Action of gear mesh 88 and the fertilising clutch 89 that cuts off action.

In this structure, by making the whole of fertilising clutch 89 each fertilizer output roller 42 (being each fertilizer output device 40) is connected, fertilizer supply can be given on each of six trench digging fertilizer applicators 26, carry out the fertilising on whole ridges.

In addition, also can partly select the ridge of conduct fertilising object.For example, about being divided in the rice transplanter of the six ridge rice transplantings on each three ridge, cut-out is to the fertilising clutch 89 ground action of 40 fertilisings of the fertilizer output device outside the left side, and action with making remaining fertilising clutch 89 connections, can carry out the fertilising on a ridge in three ridges, right side and the left side.By cutting off fertilising clutch 89 ground action to two the fertilizer output devices 40 in left side, connect fertilising clutch 89 ground action on the other hand to two the fertilizer setting devices 40 in right side, can carry out the fertilising on three ridges, right side.By cutting off fertilising clutch 89 ground action to the fertilizer output device 40 in two fertilizer output devices 40 in left side and the right side, connect on the other hand the action of fertilising clutch 89 ground of the fertilizer output device 40 outside the right side, can carry out outside the right side, the fertilising on central two ridges, right side.And, move by fertilising clutch 89 ground that cut off the fertilizer output device 40 outside the right side, and connect the action of remaining fertilising clutch 89 ground, can carry out the fertilising on a ridge in three ridges, left side, the right side.By two fertilizer that cut off the right side 40 fertilising clutch 89 ground action is set, connects fertilising clutch 89 ground action on the other hand, can carry out the fertilising on three ridges, left side two fertilisings in left side output device 40.By cutting off fertilising clutch 89 ground action to the fertilizer output device 40 in two fertilizer output devices 40 in right side and the left side, connect on the other hand the action of fertilising clutch 89 ground of the fertilizer output device 40 outside the left side, can carry out that the left side is outer, the fertilising on central two ridges, left side.

In addition, fertilizer output device 40 is bearing on the fertilising frame 14 that connects on the vehicle body frame 5 be arranged on vehicle body 18 voluntarily.In more detail, this fertilising frame 14 connects the pillar 14a that is bearing on the vehicle body frame 5 by left and right sides devices spaced apart ground, with is connected be bearing on this pillar 14a about towards crossbeam 14b formation.Cylinder side box body portion 43 connections of fertilizer output device 40 are bearing on this crossbeam 14b, and hopper 31 connections are bearing on this cylinder side box body 43.

Simultaneously, each fertilizer supply pipeline 32 is as Figure 15 and shown in Figure 16, the one end with bolt to the crossbeam 14b of aforementioned fertilising frame 14.For the other end of each fertilizer supply pipeline 32, allow in the scope of setting, to move up and down, but utilization overlaps the swing that the U-shaped tube guide piece 91 on the crossbeam 14b limits along left and right directions.In more detail, by subtend part (two foot section of U font) portion that prevents 92 that plays a part to swing of tube guide piece 91, swinging of each fertilizer supply pipeline 32 is restricted.In addition, the coupling part (two leg connecting portions of U font) by tube guide piece 91 plays a part lower limit formation portion 93, stops each fertilizer supply pipeline 32 to move to the below lower than first setting height.And then, play a part upper limit formation portion 94 by crossbeam 14b, stop each fertilizer supply pipeline 32 to move to the top higher than second setting height.

Like this,, utilize simple and cheap structure, just can prevent that fertilizer supply pipeline 32 swings in motion by the tube guide piece that swings 91 of restriction fertilizer supply pipeline 32 is set, and with interference such as other object contacts.In addition, here, because the supply on restriction pipe moves by tube guide piece 91 is formed the U font, the crossbeam 14b restriction upper limit of fertilising frame 14, so, only need by taking certain measure aspect the shape set of tube guide piece 91 and fertilising frame 14 and the configuration, just can prevent simple in structure and at an easy rate by fertilizer supply pipeline 32 undue move up and down that cause and interference other object.

In addition, between the subtend part that fertilizer supply pipeline 32 is arranged on tube guide piece 91, both can be with fertilizer supply pipeline 32 between the distolateral part of passing subtend, also can be by making tube guide piece 91 strains, make the other end leave crossbeam 14b, between the other end of tube guide piece 91 and crossbeam 14b, form by fertilizer supply pipeline 32 midway after move into the gap that subtend is used between partly.

(other embodiment)

Above, the preferred implementation according to working in paddy field of the present invention is illustrated, but this is an example after all that the present invention is not limited to above-mentioned embodiment.

For example, in the above-described embodiment, be applicable to the rice transplanter that has six ridge formula seedling-transplanting devices 20, but the present invention also is applicable to the fertilizer apparatus that carries out the fertilising of many ridges except that six ridges.

Claims

1, a kind of working in paddy field, be that fertilizer apparatus (30) is carried working in paddy field on vehicle body (18) voluntarily, aforementioned fertilizer apparatus (30) comprising: the hopper (31) of storing fertilizer, the fertilizer output device (40) of being located at the bottom of aforementioned hopper, from this hopper, the fertilizer of storing being exported, and produce from this fertilizer output device the fan blower (54) of fertilizer supply to the carrying wind of trench digging fertilizer applicator (26) usefulness, it is characterized by

The air entry (55a) of the intake guide (55) that is communicated with the suction unit (54a) of aforementioned fan blower (54) be configured in engine exhaust muffler (11a) near, and towards the interior of body opening.

2, working in paddy field as claimed in claim 1 is characterized by, the air entry (55a) of aforementioned intake guide (55) towards with the output variable speed of engine, pass to hydrostatic formula stepless speed change device (16) configuration of running vehicle wheel.

3, working in paddy field as claimed in claim 2 is characterized by, and the air entry (55a) of aforementioned intake guide (55) is configured in the downwind side of the cooling blower of being located on the aforementioned hydrostatic stepless speed change device (16) (17).

4, working in paddy field as claimed in claim 1 is characterized by,

Aforementioned fan blower (54) is provided in the substantial middle of vehicle body, and,

To distribute from the fertilizer carrying wind that this fan blower (54) comes be supplied to and cut apart ajutage (60) along what the ajutage (50) of vehicle body horizontal direction a plurality of fertilizer output devices (40) arranged side by side cut apart that the single tubing that constitutes on aforementioned each the fertilizer output device (40) that is connected to the vehicle body left side makes, what be connected to that single tubing on aforementioned each fertilizer output device (40) on vehicle body right side makes cuts apart ajutage (60), and is connected to two and cuts apart on the ajutage, the fertilizer carrying wind that comes from aforementioned fan blower (54) will be distributed to the distribution supply pipe (70) of respectively cutting apart ajutage.

5, working in paddy field as claimed in claim 4, it is characterized by, be formed with rectification part (63) on the ajutage (60) in aforementioned respectively cutting apart, described rectification part (63) leads to the fertilizer carrying wind that comes from aforementioned distribution supply pipe (70), makes it flow into the carrying wind supply opening (48) of aforementioned each fertilizer output device (40).

6, working in paddy field as claimed in claim 5 is characterized by,

Aforementioned fertilizer output device (40) has by the rotation of built-in output roller (42) fertilizer of the output of the fertilizer in the aforementioned hopper (31) is exported casing (43),

Aforementioned fertilizer output casing (43) with the face of the axis of rotation (x) that comprises aforementioned output roller (42) as divisional plane (Y), cut apart the lower portion (43L) that formation has the upper portion (43U) of the connection connecting portion on aforementioned hopper (31) and has aforementioned carrying wind supply opening (48), aforementioned lower portion (43L) can open and close the ground pivot around second axis of rotation (x2) swing and be bearing on the aforementioned upper portion (43U).

7, working in paddy field as claimed in claim 6 is characterized by,

On the lower portion (43L) of aforementioned fertilizer output casing (43), maintain the seal (86) that the connection connecting portion with the aforementioned upper portion (43U) of this fertilizer output casing (43) and lower portion (43L) seals.