JP2012055287A - Seedling transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seedling transplanter including a fertilizing apparatus that makes the amount of fertilizer to be dispensed from the fertilizing apparatus approximately constant per unit field area, even when the travel speed of the seedling transplanter varies.SOLUTION: The rotational speed of dispensing rolls 73A, 73B of the fertilizing apparatus 5 is changed with a preset variation by means of a fertilizer dispensing electric motor 159, on the basis of the travel speed of a traveling vehicle body 2 detected by a vehicle speed sensor 112 so that the amount of fertilizer to be supplied to the rotating bodies 73A, 73B can be kept constant, even when the rotational speed of the rotating bodies 73A, 73B is changed. For example, when a vehicle speed is accelerated, the rotation of the dispensing rolls 73A, 73B is more decelerated than a proportional relationship so as to prevent the reduction of the amount of fertilizer to be discharged by the rolls 73A, 73B one time and prevent the deficiency of fertilizer, resulting in good growth of seedlings. When the vehicle speed is decelerated, the rotation of the rolls 73A, 73B is changed so as to be more accelerated than the proportional relationship to accelerate the rotational speed of the rolls 73A, 73B, thereby preventing the increase of the amount of fertilizer to be discharged by the rolls 73A, 73B one time, resulting in the prevention of the excessive supply of fertilizer.

Description

  The present invention relates to a seedling transplanter provided with a fertilizer application device having a powder body feeding device.

The granular material feeding device of the fertilizer application device of the seedling transplanter includes a hopper that stores the granular material. The powder hopper is provided with a lid that opens and closes the upper surface thereof, and the lid is opened to store powder particles such as fertilizer and chemicals in the hopper, and are taken out and used when necessary. For example, a granular material in which the granular material in the granular hopper is fed out by a feeding roll provided on the lower side, and the fed granular material is conveyed to the field by pressurized air supplied from an air chamber. Used as part of the feeding device.
In this specification, the left and right directions are referred to as left and right, respectively, facing the forward direction of the seedling transplanter, the forward direction is referred to as the front, and the backward direction is referred to as the rear.

JP 2004-222504 A

In the seedling transplanter equipped with the fertilizer described in Patent Document 1, when the traveling speed is increased, the rotation speed of the feed roll of the fertilizer is also increased in proportion to the rotational speed of the engine, and the rotation of the feed roll for feeding fertilizer is increased. The number increases.
However, the number of revolutions of the feeding roll has only a certain proportional relationship with the number of revolutions of the engine, and the only way to increase or decrease the amount of fertilizer fed is to adjust manually. Therefore, for example, when the vehicle speed is increased, the time for fertilizer to enter the groove portion of the feeding roll is shortened, the amount of fertilizer applied at one time is reduced, and there is a problem that the seedling is poorly grown and the seedlings are poorly grown.
Conversely, if the running speed of the seedling transplanter is slowed down, the transmission speed of the fertilizer application will also be slowed down, and the rotational speed of the feed roll will decrease proportionally accordingly, so that the time for fertilizer to enter the groove portion of the feed roll will be long. Therefore, there is a problem that fertilizer is thrown into the groove more than a predetermined amount, the fertilizer is supplied excessively, and the seedling is weakened and the water quality is contaminated by excessive fertilization.

And if you forget to stop the fertilizer blower when replenishing fertilizer to the fertilizer, the wind blown from the fertilizer blower hits the field scene and mud and water enter the fertilizer supply path, There is a problem that the water clogs the fertilizer and the fertilizer is not supplied. In particular, when the planting part is lowered, such as during seedling planting work, the distance between the fertilizer supply route and the field scene is close, so when the plant is stopped and the fertilizer is replenished during the planting work The above problems are likely to occur.
Therefore, an object of the present invention is to provide a seedling transplanter equipped with a fertilizer application device in which the amount of fertilizer delivered from the fertilizer application device is substantially constant per unit field area even when the running speed of the seedling transplanter varies. Is to provide.

The above-described problems of the present invention are solved by the following solution means.
That is, the invention described in claim 1 includes a front vehicle body (10) and a rear wheel (11), a traveling vehicle body (2) traveling on a farm field, and an elevating link device (3) at the rear of the traveling vehicle body (2). The seedling planting part (4) provided via the fertilizer hopper (60) provided on the traveling vehicle body (2) and the fertilizer fed from the fertilizer hopper (60) are fed out by rotating the rotating bodies (73A, 73B). A fertilizer application device (5) having a fertilizer blower (67) for blowing and conveying fertilizer from the section (61) and the feeding section (61), and traveling speed detecting means for detecting the traveling speed of the traveling vehicle body (2) ( 112) and a control device (100) for controlling the rotational speed of the feeding rotating bodies (73A, 73B) in the feeding section (61) according to the traveling speed detected by the traveling speed detecting means (112). This is a seedling transplanter characterized by that.

  The control device (100) sets the fertilizer blower (67) to “ON” when the travel speed detecting means (112) starts detecting the travel speed, and the travel speed detecting means (112) travels. 2. The seedling transplanter according to claim 1, further comprising a control for turning off the fertilizer blower (67) when the speed is not detected.

  The invention described in claim 3 is the seedling transplanter according to claim 1 or 2, characterized in that the traveling speed detecting means (112) is provided on the drive shaft of the rear wheel (11) of the traveling vehicle body (2). .

  The invention described in claim 4 is the seedling transplanter according to claim 1 or 2, characterized in that the traveling speed detecting means (112) is provided on the feeding drive shaft (105) of the fertilizer application device (5).

  According to the first aspect of the present invention, the rotational speed of the feeding rotary bodies 73A and 73B of the fertilizer application device 5 is changed by the fertilizer feeding electric motor (159) by a preset change amount based on the traveling speed of the traveling vehicle body 2. Thus, even if the traveling speed changes and the rotational speed of the feeding rotary bodies 73A and 73B changes, the amount of fertilizer supplied to the feeding rotary bodies 73A and 73B can be maintained at a constant amount. When the traveling speed of 2 is increased, the rotation of the feeding rotary bodies 73A and 73B becomes slower than the proportional relationship, and the amount of fertilizer discharged by the feeding rotary bodies 73A and 73B at a time is prevented from becoming insufficient. When the seedling grows well and the traveling speed of the traveling vehicle body 2 becomes slow, the rotation of the feeding rotary bodies 73A and 73B is changed so as to be faster than the proportional relationship. Since the rotation speed of the rotating bodies 73A and 73B is increased and the amount of fertilizer discharged from the rotating bodies 73A and 73B increases at one time and the fertilizer can be prevented from being excessively supplied, the seedling is weakened due to excessive fertilizer. And pollution of water quality is prevented.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the fertilizer blower 67 is stopped when the travel speed detecting means 112 does not detect the travel speed, that is, when the travel stop state is entered. As a result, it is possible to prevent wind discharged from the fertilizer blower 67 from splashing mud and water in the field and clogging the fertilizer supply path 62, so that it is possible to prevent the fertilizer from being supplied to the field, Growth is stable.
Further, since the work of removing the mud that has entered the fertilizer supply path 62 is omitted, the labor of the operator is reduced.

  According to the invention described in claim 3, in addition to the effect of the invention described in claim 1, the traveling speed of the traveling vehicle body 2 is provided by providing the traveling speed detecting means 112 on the drive shaft of the rear wheel 11 of the traveling vehicle body 2. Can be directly detected and reflected in the amount of fertilization, so that an appropriate amount of fertilizer is applied to the field, so that the growth of the seedling is improved and growth failure due to excessive fertilization is prevented.

  According to the invention described in claim 4, in addition to the effect of the invention described in claim 1, by providing the traveling speed detection means 112 in the transmission mechanism of the fertilizer applicator 5, the transmission mechanism can be rotated by changing the traveling speed. Since the corresponding fertilization amount can be discriminated, an appropriate amount of fertilizer is applied to the field, so that the growth of the seedling is improved and the growth failure due to excessive fertilization is prevented.

It is a side view of the riding type rice transplanter with a fertilizer application of the example of the present invention. It is a top view of the riding type rice transplanter with a fertilizer application of FIG. It is a rear view of the fertilizer application of FIG. It is a top view of the fertilizer application of FIG. It is a side view of the fertilizer application of FIG. It is side surface sectional drawing of the granular material supply part of the fertilizer application of FIG. It is side surface sectional drawing of the modification of the granular material supply part of the fertilizer application of FIG. It is SS sectional drawing of FIG. It is a side view of the fertilizer collection lever and its related member of the fertilizer application of FIG. It is a side view which shows the fertilization transmission mechanism of the fertilizer application of FIG. It is a top view which shows the fertilization transmission mechanism of the fertilizer application of FIG. It is an expanded view which shows a part of reverse rotation transmission mechanism and feed amount adjustment mechanism of the fertilizer application of FIG. It is sectional drawing which shows the transmission mechanism to the fertilizer delivery part of the fertilizer application of FIG. It is a flowchart for control which drives a fertilizer applicator or a wrinkle supply apparatus only when the seedling transplanter of FIG. 1 stops traveling. It is a block diagram of the control apparatus of the seedling transplanter of FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG.1 and FIG.2 represents the riding type rice transplanter with a fertilizer applicator equipped with the fertilizer applicator which has the granular material feeding apparatus which is one Example using this invention. In this riding type rice transplanter 1 with a fertilizer application, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 via an elevating link device 3 so that the seedling planting portion 4 can be moved up and down. Is provided.

  The traveling vehicle body 2 is a four-wheel drive vehicle including a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 as drive wheels, and a transmission case 12 is disposed at the front of the fuselage. Front wheel final cases 13, 13 are provided on the left and right sides of the case 12, and the left and right front wheels are mounted on the left and right front wheel axles projecting outward from the respective front wheel support portions capable of changing the steering direction of the left and right front wheel final cases 13, 13. 10 and 10 are respectively attached. Further, the front end portion of the main frame 15 is fixed to the rear portion of the transmission case 12, and a rear wheel gear case 18, with a rear wheel rolling shaft provided horizontally in the front and rear sides at the rear left and right center of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to a rear wheel axle that is supported in a freely rolling manner and projects outwardly from the rear wheel gear cases 18 and 18.

  The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the transmission case 12 via the first belt transmission device 21 and the HST 23. The rotational power transmitted to the mission case 12 is shifted by a transmission in the case 12 and then separated into traveling power and external power to be extracted. A part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external take-out power is transmitted to a planting clutch case 25 provided at the rear part of the traveling vehicle body 2, and then transmitted to the seedling planting unit 4 by the planting transmission shaft 26, and also the fertilizer application device 5 by the fertilization transmission mechanism 27. Is transmitted to.

The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed thereon. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a handle 34 for steering the front wheels 10 and 10 is provided above the front cover 32. The engine cover 30 and the front cover 32 have horizontal floor steps 35 on the left and right sides of the lower end. The floor step 35 is partly grid-shaped (see FIG. 2), and mud on the shoe of the worker walking through the step 35 falls on the field. The rear part on the floor step 35 is a rear step 36 that also serves as a rear wheel fender.
Further, on both the left and right sides of the front part of the traveling vehicle body 2, the spare seedling platforms 38, 38 on which the replenishment seedlings are placed can be pivoted to a position projecting laterally from the machine body and a position housed inside. Is provided.

  The elevating link device 3 has a parallel link configuration, and includes one upper link 40 and a pair of left and right lower links 41, 41. These links 40, 41, 41 are pivotally attached to a rear-view portal-shaped link base frame 42 erected on the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. And the connecting shaft 44 rotatably supported by the seedling planting part 4 is inserted and connected to the lower end part of the vertical link 43, and the seedling planting part 4 is connected so as to be able to roll around the connecting shaft 44. An elevating hydraulic cylinder 46 is provided between a support member fixed to the main frame 15 and a tip of a swing arm 45 formed integrally with the upper link 40, and the upper link 40 is expanded and contracted by hydraulically extending the cylinder. It rotates up and down and the seedling planting part 4 moves up and down while maintaining a substantially constant posture.

  The seedling planting section 4 has a six-row planting structure, a transmission case 50 that also serves as a frame, a mat seedling, and a left and right reciprocating movement to supply seedlings to the seedling outlets 51a,... When all the seedlings are supplied to the seedling outlet 51a,..., The seedling mount 51 for transferring the seedling downward by the seedling feeding belt 51b,..., And the seedling supplied to the seedling outlet 51a,. A seedling planting device 52, which is planted in a farm field, and a pair of left and right drawing markers 53, 53 for drawing the aircraft path in the next stroke to the topsoil surface are provided. In the lower part of the seedling planting part 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on the left and right sides thereof. When the aircraft is advanced with these floats 55, 56, 56 in contact with the mud surface of the field, the floats 55, 56, 56 slide while leveling the mud surface, and the seedling planting device 52, ... to plant seedlings. Each of the floats 55, 56, and 56 is pivotally attached so that the front end side moves up and down according to the unevenness of the field topsoil surface, and the vertical movement of the front part of the center float 55 is detected as a vertical movement detection mechanism during planting work. The planting depth of the seedling is always maintained constant by switching the hydraulic valve that controls the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting unit 4.

  The fertilizer applicator 5 feeds the granular fertilizer stored in the fertilizer hopper 60 by a fixed amount by the feeding portions 61,... And applies the fertilizer to the left and right sides of the floats 55, 56, 56 with the fertilizer hoses 62,. Are guided to the guides 63, and are dropped into a fertilization structure formed in the vicinity of the side portion of the seedling planting line by grooved bodies 64 provided on the front side of the fertilization guides 63,. The air generated by the blower 67 driven by the electric motor 66 is blown into the fertilizer hose 62,... Via the air chamber 68 that is long in the left-right direction, and the fertilizer in the fertilizer hose 62,. It is supposed to be.

Hereinafter, the structure of each part of the fertilizer application apparatus 5 shown in FIGS. 3-13 is demonstrated.
The fertilizer hopper 60 is shared by each strip, and a lid 60a that can be opened and closed is attached to the top. The lower part of the fertilizer hopper 60 is branched into the number of fertilizer strips and has a funnel shape, and the lower part is connected to the upper ends of the feeding parts 61. The fertilizer hopper 60 is attached to two left and right rotating arms 71 supported by a fertilizer application side frame 49 that is long in the left-right direction. It can be separated from the parts 61. The rotating arm 71 is disposed between the first feeding portion and the second feeding portion from the outside (two are provided at symmetrical positions). At the normal position where the lower part of the fertilizer hopper 60 is connected to the upper ends of the fertilizer feeding parts 61,...

  As shown in FIGS. 6 and 8, the feeding unit 61 includes two feeding rolls 73 </ b> A and 73 </ b> B that feed the fertilizer in the fertilizer hopper 60 downward. These feeding rolls 73A, 73B are rotating bodies having groove-shaped recesses 74,... Formed on the outer peripheral portion thereof, and are provided on a corner shaft portion 75a (square shaft in the illustrated example) of a common feeding shaft 75 provided in the left-right direction. They are fitted so as to rotate together. As the feed rolls 73A and 73B rotate in the direction of the arrow in FIG. 6, the fertilizer dropped and supplied from the fertilizer hopper 60 is accommodated in the recess 74 and fed downward. The fertilizer fed out by both the feeding rolls 73A and 73B is discharged from the discharge port 61a at the lower end.

  The number of concave portions of the feeding rolls 73A and 73B in the illustrated example is six, and the phases of the concave portions are different from each other. For this reason, the concave portions of the feeding rolls 73A and 73B alternately feed the fertilizer, and the amount of the fertilizer discharged from the discharge port 61a is equalized in terms of time. By removing any one of the feeding rolls 73A or 73B from the feeding shaft 75 and changing the phase appropriately, the phases of the concave portions of the feeding rolls 73A and 73B can be made equal. This makes it possible to apply fertilizer to the field in the form of dots.

In addition, a brush 76 slidably in contact with the outer peripheral surface of the feeding roll 73 on the side (front side) where the concave portion 74 moves downward is detachably provided inside the feeding portion 61. The fertilizer is housed in the recesses 74 of the feeding rolls 73A and 73B by the brush 76 in a state of being scraped, and the amount of fertilizer fed by the feeding rolls 73A and 73B is kept constant.
Further, the lower contact portion (S) of the feeding roll 73 and the capsule wear prevention plate 82 when the fertilizer is clogged is shown in FIG. 7A in comparison with the configuration of the feeding portion 61 of the current apparatus shown in FIG. 7B. If the obtuse angled contact is made as described above, the feeding drive gear 108a and the feeding driven gear 108b (FIG. 13) can be prevented from being damaged.

  Furthermore, on the upper side of the brush 76, feeding stop shutters 77A and 77B (FIG. 8) are provided so as to prevent the fertilizer from dropping from the fertilizer hopper 60 to the feeding portion 61 so as to protrude above the feeding rolls 73A and 73B. . The feeding stop shutters 77A and 77B are slidably supported by a slide support portion 79 (FIG. 6) of the feeding portion case 78, and are slid by grasping a handle 77a formed at the front end portion outside the case. Yes.

  A connecting pipe 80 (FIG. 3) communicating in the front-rear direction is connected to the discharge port 61 a of the feeding portion 61. A fertilizer hose 62 (FIG. 5) is connected to the rear end of the connection pipe 80. Since the lower end portion of the fertilizer application side frame 49 (FIG. 5) is engaged with the outer peripheral spiral groove of the fertilizer hose 62, the fertilizer hose 62 is difficult to come off from the connection pipe 80. On the other hand, the front end portion of each connecting pipe 80 is inserted and connected to the back surface portion of the air chamber 68 (FIGS. 4 and 5). The left end of the air chamber 68 is connected to a blower 67 (FIGS. 3 and 4) via an air switching pipe 81, and the air from the blower 67 passes from the connection pipe 80 to the fertilizer hose 62 via the air chamber 68. It comes to be blown. Note that the blower 67 is configured such that its air discharge port can be removed from the air switching pipe 81 and rotated and housed inside the machine body.

  The air chamber 68 is configured by alternately connecting a rubber pipe 68a to which a connecting pipe 80 is attached and a resin pipe 68b at an intermediate portion. With this configuration, the air chamber 68 can be easily disassembled and assembled, so that the maintenance with the feeding portion 61 removed as a whole is easy. If the length of the rubber tube 68a is made longer than the distance between the pair of feeding portions, the rubber tube 68a can be easily removed from the resin tube 68b.

  Moreover, as shown in FIG. 6, the fertilizer discharge port 83 for taking out the fertilizer in a fertilizer hopper is formed in the back part of the feeding part case 78. As shown in FIG. The fertilizer discharge port 83 is provided with a discharge shutter 84 that can be opened and closed with the upper end side as a fulcrum. The fertilizer discharge port 83 of each feeding part is connected to a fertilizer collecting pipe 85 that is provided behind the feeding part 61 and that is long in the left-right direction. The left end portion of the fertilizer collection pipe 85 is connected to the blower 67 through the air switching pipe 81. The air switching pipe 81 is a bifurcated pipe, and an air chamber 68 is connected to one side and a fertilizer collection pipe 85 is connected to the other side. The air switching pipe 81 is provided with an air switching shutter 86 as an air switching section, and can be switched between a state where air blown from the blower 67 is supplied to the air chamber 68 side and a state where air is supplied to the fertilizer recovery pipe 85 side. It has become. Since the air switching shutter 86 is located in the front and rear central portion between the air chamber 68 and the fertilizer collecting pipe 85, the air supply to both is stable. The right end portion of the fertilizer collection pipe 85 is a fertilizer collection port 87.

  FIG. 9 is a view showing an opening / closing mechanism of each of the shutters 84,. A fertilizer recovery lever 90 is rotatably provided in the vicinity of the fertilizer recovery port 87. A shutter opening / closing transmission shaft 91 (FIGS. 3 and 4) that is long in the left-right direction and is disposed on the front side of the feeding portion 61 is provided coaxially with the rotation fulcrum shaft 90 a of the fertilizer collection lever 90. A fan-shaped plate 92 is attached to the shutter opening / closing transmission shaft 91, and a pin 90 b fixed to the fertilizer collecting lever 90 is loosely fitted in an arc-shaped elongated hole 92 a formed in the fan-shaped plate 92. An opening / closing gear 93 is attached to the shutter opening / closing transmission shaft 91 for each feeding portion, and the gear 93 meshes with a semicircular gear 94 attached to the rotation shaft 84 a of the discharge shutter 84. In addition, since the stopper part 94a whose diameter is larger than the tooth | gear of the said gear 94 is formed in the edge part of the semicircle gear 94, both gears 93 and 94 do not disengage. Further, one end of an air switching wire 95 is connected to the fertilizer recovery lever 90. The other end of the air switching wire 95 is connected to an arm 96 attached to the rotation shaft 86a of the air switching shutter 86 via a tension spring 97 as a biasing means.

  When the fertilizer recovery lever 90 is rotated, the air switching wire 95 is pulled to switch the air switching shutter 86, and the air drawn from the blower 67 is supplied to the fertilizer recovery pipe 85. As long as the amount of rotation of the fertilizer recovery lever 90 is small, the pin 90b only moves in the elongated hole 92a, so the shutter opening / closing transmission shaft 91 does not rotate. However, when the fertilizer recovery lever 90 is rotated more than a certain amount, the pin 90b is engaged with the fan-shaped plate 92, and the shutter opening / closing transmission shaft 91 is rotated. Thereby, the discharge shutters 84,... Open, and the fertilizer in the fertilizer hopper 60 is discharged to the fertilizer collection pipe 85. That is, the air switching shutter 86 and the discharge shutter 84,... Can be operated only by operating one lever 90. In addition, inevitably, air is first supplied to the fertilizer recovery pipe 85, and thereafter the fertilizer is discharged to the fertilizer recovery pipe 85. For this reason, the fertilizer is smoothly conveyed in the fertilizer recovery pipe 85, and the fertilizer clogging in the fertilizer recovery pipe 85 does not occur. Further, since the fertilizer recovery lever 90 is provided in the vicinity of the fertilizer recovery port 87, a fertilizer recovery container and the like can be easily secured below the fertilizer recovery port 87, and further work can be performed while checking the state of fertilizer recovery. Convenient.

The fertilizer collecting lever 90 is rotated along the lever guide 98. Guide holes 98a and 98b are formed in the lever guide 98, and an engaging portion (not shown) of the fertilizer recovery lever 90 is engaged with the guide holes 98a and 98b by utilizing the bending of the fertilizer recovery lever 90. Thus, the fertilizer collecting lever 90 can be fixed at a position P1 (FIG. 9) where only the air switching shutter 86 is switched and a position P2 where both the air switching shutter 86 and the discharge shutters 84 are switched. It has become. The fertilizer collecting lever 90 may be stopped at a position other than the above, and the opening degree of the discharge shutter 84 may be adjusted steplessly or stepwise.
Accordingly, when fertilizer is collected, the fertilizer conveyed by the air flow from the blower 67 flows through the fertilizer collection pipe 85, and the fertilizer is smoothly discharged from the collection port 87.
In addition, since the air switching shutter 86 rotates around the rotation shaft 86a that faces in the vertical direction, the resistance during the opening / closing operation of the air switching shutter 86 does not fluctuate. Further, since the air switching shutter 86 is forcibly switched against the tension of the tension spring 97 when collecting the fertilizer, the air switching shutter 86 has good airtightness when collecting the fertilizer.

  If the engagement between the open / close gear 93 and the semicircular gear 94 shown in FIG. 4 is flexible in advance, the operation timing of the discharge shutter 84 of each line can be obtained even if there is some error in the assembly of the gears of each line. Therefore, the discharge shutter 84 can be reliably closed without being out of order.

  On the other hand, when the fertilizer recovery lever 90 is set to the fertilization work position shown in FIG. 9, a switch that is turned “ON” is provided, and the hook clutch levers 110 (1, 2), 110 (3, 4), 110 (5, 6) are provided. (FIG. 4) is provided with switches that are turned “ON” when the clutch is engaged, and by detecting these switches, the fertilizer recovery lever 90 is in the fertilizer discharge position (when the fertilizer recovery lever 90 is not in the fertilization work position).モ ニ タ ー Provided on the monitor part below the handle 34 that warns that the fertilizer recovery lever 90 is not in the fertilization work position when the clutch levers 110 (1 2) to 110 (5, 6) are engaged with the clutch (at the time of fertilization work) Control is performed by the control device 100 shown in FIG. 15 so as to output to the alarm device 113 (turn on a lamp (not shown) or sound a buzzer). After the fertilizer recovery operation with the fertilizer recovery lever 90 in the P2 position in FIG. 9, the operation is interrupted by turning off the main switch while the fertilizer recovery lever 90 is in the P2 position. In order to prevent the trouble of planting without performing fertilization work if the fertilizer recovery lever 90 is in the P2 position when planting is performed, the fertilizer recovery lever 90 is left in the P2 position. When the main switch is turned on, the lamp lights or a buzzer sounds to inform the operator that the fertilizer recovery lever 90 is not in the fertilization work position, and the operator immediately operates the fertilizer recovery lever 90 to the fertilization work position. As a result, the above-mentioned problems can be prevented and the workability is good.

  The feeding portion case 78 is divided into a lower fixing portion 78a and an upper separation portion 78b at a dividing surface FF (FIG. 5) inclined forward and downward in a side view. The feeding rolls 73A and 73B and the discharge shutter 84 (fertilizer discharge port 83) are provided in the fixed portion 78a. On the other hand, the brush 76 and the feeding stop shutter 77 are provided in the separation portion 78b. Since the upper opening and the discharge port 61a to which the fertilizer hopper 60 is connected are not divided, the airtightness of both is kept good.

  When the fertilizer hopper 60 is rotated most backward, the fertilizer hopper 60 is positioned outside the area projected in the direction in which the detachment portion 78b is detached in a side view. For this reason, the detachment part 78b can be detachable without difficulty. Further, the extension of the dividing plane FF (FIG. 5) is located below the upper end of the air chamber 68, and the air chamber 68 is located outside the area projected in the direction in which the separation portion 78b is detached in a side view. is doing. For this reason, it is easy to perform maintenance of the feeding rolls 73A and 73B from the traveling vehicle body 2 with the detached portion 78b removed.

  As shown in FIG. 5A, the feeding portion 61 is attached to the link base frame 42 integrally with the air chamber 68 so as to be rotatable about a rotation shaft 82a. A fixed plate 47 is connected to the link base frame 42, and a feed amount adjusting rod support plate 58 is connected to the fixed plate 47, and the feed amount adjusting rod support plate 58 is fixed to the machine body side frame 48. . The fertilizer application side frame 49 that supports the machine body side frame 48 and the air chamber 68 is detachably locked by a patch lock 49a. The feed amount adjustment rod support plate 58 is configured to support the tip end portion of the feed amount adjustment rod 157 through the inside of the feed portion 61, and an electric motor 159 is provided at the other tip portion of the feed amount adjustment rod 157. As will be described later, the feeding amount of the granular material can be adjusted by turning the electric motor 159.

  Further, the machine body side frame 48 and the side surface of the feeding portion 61 are connected to each other by the hopper 60 and the feeding portion 61 that are integrated with each other by a tilt position locking plate 54. One end of the tilt position locking plate 54 is fixed to the machine body side frame 48, and the other end is fixed to the side surface of the feeding portion 61. Further, as shown in FIG. 5B, the tilting position locking plate 54 is provided with a vertically long slot 54a, and the upper end side of the slot 54a is connected with a hole 54b whose direction is changed in the horizontal direction. Yes. Since the pin 48a fixed to the machine body side frame 48 is inserted into the long hole 54a, when the integrated feeding portion 61 and the hopper 60 are tilted, the pin 48a moves in the long hole 54a and at the upper end thereof. The tilting of the feeding part 61 and the hopper 60 is stopped. When the pin 48a moves to the hole 54b following the long hole 54a, the feeding portion 61 and the hopper 60 can swing in the horizontal direction with respect to the machine body around the rotation fulcrum 54c.

  With the above-described configuration, almost the entire fertilizer application device 5 including the hopper 60 and the feeding portion 61 can be inclined, so that the granular material remaining in the hopper 60 and the feeding portion 61 is discharged to the fertilizer hose 62 side, as in the conventional case. No powder particles such as fertilizer remain in the fertilizer application device 5, and the powder particles can be quickly discharged to the fertilizer hose 62 side. Also, the inside of the empty hopper and the feeding part can be easily checked.

  Further, although not shown, in a tilting mechanism that tilts the fertilizer application device 5 including the hopper 60 and the feeding portion 61 backward, a rotation mechanism (not shown) that can tilt the fertilizer application device 5 to the right side at the rear right side portion of the tilting mechanism. )), The fertilizer discharging time of the fertilizer remaining in the hopper 60 and the feeding part 61 can be shortened by rotating the fertilizer 5 backward. Further, the tilt angle of the hopper 60 can be arbitrarily changed.

Further, as shown in the side view of the fertilizer application part of FIG. 5, in the tilting mechanism of the fertilizer application device 5, the feeding part 61 is divided and provided at the feeding amount adjusting rod 157 and the leading end of the feeding amount adjusting rod 157. Alternatively, a configuration may be adopted in which the electric motor 159 is not allowed to tilt, and only the fertilizer application device 5 mainly composed of the hopper 60 can be tilted. If the rotation shaft of the tilting mechanism is not the rotation shaft 82a shown in FIG. 5, but the feeding drive shaft 105 shown in FIG. 6 is used, the configuration can be made relatively simple, and the tilting mechanism can be extended with sufficient strength. By using a coaxial structure with the drive shaft 105, sufficient strength can be obtained.
Since the above-mentioned feed amount adjusting rod 157 and the electric motor 159 provided at the tip of the feed amount adjusting rod 157 are made incapable of being tilted, these powder body feeding devices can be held in a fixed portion. The feeding amount can be stabilized.

Next, the fertilization transmission mechanism 27 (FIG. 1) will be mainly described with reference to FIGS. In addition, the fertilizer transmission mechanism 27 is arrange | positioned between the 4th and 5th fertilizer supply parts 61 counting from the left.
The crank arm 131 (FIG. 10) protruding from the rear surface of the planting clutch case 25 (FIG. 1) rotates in the output direction, and the vertical reciprocating operation of the drive-side swing rod 132 connected to the crank arm 131 extends in the vertical direction. Is transmitted to the upper counter arm 133. The counter arm 133 has a dogleg shape when viewed from the side, and the drive side swing rod 132 and a driven side swing rod 134 described later are connected to each other. Then, the back-and-forth reciprocation of the driven-side swing rod 134 due to reciprocal swing of the counter arm 133 is transmitted to the feed-out input arm 135 on the rear side of the counter arm 133, and the reciprocation of the feed-out input arm 135 in the front-rear direction is performed. It is transmitted to the left one-way clutch 136L.

  Two one-way clutches 136L, 136R are provided on the left and right, and are configured to rotate about the same one-way clutch shaft 137 in the left-right direction. The outer ring portions 138L, 138R and the one-way clutch The roller clutch is provided with a plurality of transmission rollers 139 between the clutch shaft 137 and the rotation of the outer ring portions 138L and 138R is transmitted to the one-way clutch shaft 137. Accordingly, in the left one-way clutch 136L, the outer ring portion 138L is provided integrally with the feeding input arm 135, and the rotation of the outer ring portion 138L that is one direction in the reciprocating operation of the feeding input arm 135 in the front-rear direction is one-way. It is transmitted to the clutch shaft 137. The left and right one-way clutches 136L and 136R are transmitted to the one-way clutch shaft 137 by rotating the outer ring portions 138L and 138R in the same direction.

  A first arm 140 integral with the outer ring portion 138L is provided above the outer ring portion 138L of the left one-way clutch 136L, and the first arm 140 and the second arm 141 on the front side are connected by a first link 142. It is connected. The second arm 141 is configured to rotate integrally with the relay shaft 143 in the left-right direction, and extends downward from the relay shaft 143 to connect the first link 142 below the relay shaft 143. A third arm 144 that rotates integrally with the relay shaft 143 extends upward from the relay shaft 143 on the right side of the second arm 141, and the third arm 144 rotates integrally with the second arm 141. A second link 145 is connected to a position above the relay shaft 143 of the third arm 144, and a fourth arm 146 is connected to the other end side of the second link 145. The fourth arm 146 is provided integrally with the outer ring portion 138R on the upper side of the outer ring portion 138R of the right one-way clutch 136R. Accordingly, the first arm 140 is reciprocated in the front-rear direction by the reciprocating rotation of the outer ring portion 138L of the left one-way clutch 136L, and is transmitted to the second arm 141 via the first link 142. 141 synchronizes with the first arm 140 and reciprocates in the front-rear direction on the same side.

  Since the third arm 144 extends on the opposite side (upper side) from the second arm 141 with respect to the relay shaft 143, the third arm 144 is synchronized with the reciprocating rotation of the second arm 141 at the connection position with the second link 145. Thus, the second arm 141 reciprocates back and forth in the front-rear direction at the connecting position of the first link 142 of the second arm 141. Then, the reciprocation of the third arm 144 is transmitted to the fourth arm 146 via the second link 145, and the fourth arm 146 reciprocates in the front-rear direction to the same side in synchronization with the third arm 144. The outer ring portion 138R of the right one-way clutch 136R rotates in the opposite direction in synchronization with the reciprocating rotation of the outer ring portion 138L of the left one-way clutch 136L. Accordingly, the first arm 140 to the fourth arm 146, the first link 142, and the second link 145 constitute a reverse transmission mechanism.

  Therefore, since the outer ring portions 138L and 138R of the left and right one-way clutches 136L and 136R are rotated to the opposite sides by the reverse transmission mechanism, any one of the left and right one-way clutches 136L and 136R is reciprocated in the reciprocating operation of the feeding input arm 135. One of them rotates the one-way clutch shaft 137 in the same one direction (forward rotation direction), and can always drive the one-way clutch shaft 137 continuously.

  A drive gear 147 that rotates integrally with a one-way clutch shaft 137 and a key 147a is provided between the left and right one-way clutches 136L and 136R, and this drive gear 147 meshes with a driven gear 148 that rotates together with a feed drive shaft 105 described later. . Accordingly, the continuous rotation of the one-way clutch shaft 137 is transmitted to the feeding drive shaft 105. Here, the feeding drive shaft 105 and the feeding shaft 75 are arranged as illustrated in FIG. 5 and FIG. 13. The feeding drive gear 108 a is attached to the feeding drive shaft 105 and the feeding driven gear 108 b is attached to the feeding shaft 75. The feeding drive gear 108a and the feeding driven gear 108b are engaged with each other. The number of teeth of the drive gear 147 is larger than the number of teeth of the driven gear 148 and is about twice the number of teeth of the driven gear 148.

  Therefore, the drive gear 147 and the driven gear 148 constitute a speed increasing transmission section that increases the rotational speed and transmits the speed. Drive gears are provided on the outer circumferences of the outer ring portions 138L and 138R of the left and right one-way clutches 136L and 136R so that foreign matters such as fertilizer and dust do not enter the transmission roller 139 portion of the one-way clutches 136L and 136R. A sealing material 149 that closes the gap between the base inner diameter portion of 147 is provided. It should be noted that outer seals are provided on the opposite side of the left and right one-way clutches 136L and 136R from the drive gear 147 of the transmission roller 139 so as to contact the inner surface of the outer ring portions 138L and 138R and the outer surface of the one-way clutch shaft 137. A material 149a is provided.

  As described above, since the drive gear 147 is provided between the left and right one-way clutches 136L and 136R, the one-way clutches 136L and 136R that transmit even if the left and right one-way clutches 136L and 136R are in the transmission state, Since the drive gear 147 and the key 147a are close to each other, the power transmitted by the one-way clutches 136L and 136R is driven as compared with the case where the drive gear 147 is disposed on one side of the left and right one-way clutches 136L and 136R. The gear 147 can be accurately transmitted at an appropriate speed, and the fertilizer feed amount of the fertilizer feed unit 61 can be stabilized appropriately.

  In addition, the seal material 149 that closes the gap between the outer ring portions 138L and 138R of the one-way clutches 136L and 136R and the base inner diameter portion of the drive gear 147 overlaps the outer ring portions 138L and 138R in the direction of the one-way clutch shaft 137. Therefore, the positions of the transmission roller 139 of the one-way clutches 136L and 136R and the drive gear 147 in the left-right direction (one-way clutch shaft 137 direction) can be brought close to each other, and are transmitted by the one-way clutches 136L and 136R. The power can be transmitted to the drive gear 147 at a proper speed with higher accuracy.

  When a conventional general one-way clutch is used, this one-way clutch is provided with a sealing material on the outside of the transmission roller (outside in the one-way clutch axial direction) like an outer sealing material 149a shown in FIG. Therefore, the drive gear and the distance between the key and the transmission roller must be provided by the thickness of the seal material in the one-way clutch shaft direction, and the rotational operation speed of the drive gear 147 is loosened at the support portion of the one-way clutch shaft. It is possible to become susceptible to the influence of, and become inappropriate or unstable.

  On the left and right sides of the reverse transmission mechanism, reverse support members 150L and 150R for supporting the reverse transmission mechanism are provided, respectively. The reverse support members 150L and 150R are made of a casting, and are fixed to the base frame 151 of the fertilizer applicator 5 with fastening bolts 152. The one-way clutch shaft 137, the feeding drive shaft 105, and the reverse transmission mechanism are relayed. Ball bearings 153, 154, and 155 for bearing the shaft 143 are provided.

  The pay-out drive shaft 105 is provided long in the left and right directions through the reverse support members 150L and 150R. Accordingly, the one-way clutch shaft 137, the feeding drive shaft 105, and the relay shaft 143 are supported on the left and right by the left and right reverse support members 150L and 150R, and the one-way clutch shaft 137, the reverse transmission mechanism and drive gear 147, and the driven gear. Since both ends of the transmission portion of the fertilizer transmission mechanism 27 such as 148 are supported on both sides, the support rigidity is improved and the feeding transmission is appropriately performed with high accuracy.

  In particular, as shown in FIGS. 11 and 12, the second arm 141 is disposed close to the left reverse support member 150L, and the third arm 144 is disposed close to the right reverse support member 150R. The right and left ball bearings 155 firmly receive the operating loads received from these arms 141 and 144 in the relay shaft 143, and the transmission accuracy of the arms 141 and 144 can be improved.

  A feed amount adjusting mechanism 156 is provided on the left side of the left reverse support member 150L. The feed amount adjusting mechanism 156 includes a feed amount adjusting shaft 158 having a feed amount adjusting screw portion 157 at the front portion and an electric motor 159 attached to the rear portion of the shaft 158. A shaft support member 160 is provided in the middle of the feed amount adjustment shaft 158 so that the shaft 158 can rotate. A left and right shaft support fulcrum shaft 160a fixed to the shaft support member 160 is placed on the left side. The reverse rotation support member 150L is inserted.

  Accordingly, the feed amount adjusting mechanism 156 is provided to be rotatable around the shaft support fulcrum shaft 160a. The shaft support fulcrum shaft 160a is supported by the left reverse support member 150L on the right side of the feed amount adjustment shaft 158 and supported by the adjustment shaft support frame 161 provided on the left side. Therefore, the feed amount adjusting mechanism 156 is configured to be supported at both the left and right of the feed amount adjusting shaft 158 in the shaft support fulcrum shaft 160a portion.

  On the upper part of the counter support member 163 that supports the rotation shaft 162 of the counter arm 133, a main portion having a female screw portion is provided with a hexagonal position adjustment body 164 in a side view so that the position adjustment body 164 can be rotated about an axis in the left-right direction. . The counter support member 163 is provided with counter fulcrum shafts 165 whose left and right axes are located on the same straight line in the left-right direction, and the counter support member 163 is mounted on the base frame 151 around the counter fulcrum shaft 165. It is provided so that it can rotate.

  A plurality of (four) holes 166 for mounting the counter fulcrum shaft 165 are arranged in the base frame 151 in front and back, and the counter fulcrum shaft is limited when the space of the fertilizer application device 5 is limited by the model, specifications, and the like. The front and rear positions of 165 are changed to cope with this, and the counter support member 163 and the base frame 151 are shared. The counter fulcrum shaft 165 portion is supported on the airframe by a reinforcing member 167 different from the base frame 151. Even if the position of the counter fulcrum shaft 165 changes, the reinforcing member 167 is attached to the counter fulcrum shaft 165 portion to maintain rigidity. The position of the counter fulcrum shaft 165 is made difficult to change. The feed amount adjusting screw portion 157 at the front portion of the feed amount adjusting shaft 158 is screwed into the female thread portion of the position adjusting body 164, and the position adjusting body 164 moves back and forth by the rotation of the feed amount adjusting shaft 158. The counter support member 163 rotates around the counter fulcrum shaft 165, and the rotation shaft 162 of the counter arm 133 is moved forward and upward or rear and downward.

  Therefore, by moving the rotation shaft 162 of the counter arm 133, the posture of the counter arm 133 changes. For example, when the rotation shaft 162 is moved forward and upward, the drive side swing rod 132 and the driven side swing are moved. Since the posture is changed so that both rods 134 intersect with the counter arm 133 at a right angle, the counter arm 133 operated by the driving side swing rod 132 and the feeding input arm 135 operated by the driven side swing rod 134 are changed. , The one-way clutch shaft 137 and thus the rotational speed of the feed drive shaft 105 is increased, and the rotation speed of the feed driven gear 108b meshing with the feed drive gear 108a is increased. The amount of feeding by the fertilizer feeding unit 61 increases.

  On the other hand, when the rotary shaft 162 is moved rearward and downward, the posture is changed so that the drive side swing rod 132 and the driven side swing rod 134 intersect with the counter arm 133 in a state of being apart from the right angle. The swing stroke (swing angle) of the counter arm 133 operated by the drive side swing rod 132 and the feed input arm 135 operated by the driven side swing rod 134 is reduced, and the one-way clutch shaft 137 and hence the feed drive shaft are reduced. The rotation speed of 105 becomes small, the rotation speed of the delivery driven gear 108b meshing with the delivery drive gear 108a becomes smaller, and the feeding amount by the fertilizer feeding portion 61 becomes smaller. Therefore, by operating the electric motor 159 and rotating the feeding amount adjusting shaft 158, the feeding amount of the fertilizer of the fertilizer application device 5 can be continuously changed and adjusted.

  The counter support member 163 is formed in a U-shape in plan view by a left and right plate portion 163a and a front plate portion 163b that connects the left and right plate portions 163a, and the left and right plate portions 163a have a position adjusting body 164 and a counter. Ball bearings (not shown) for bearing the pivot shaft 162 of the arm 133 and the counter fulcrum shaft 165 are provided. Therefore, the position adjusting body 164 and the rotating shaft 162 of the counter arm 133 are both supported by the left and right ball bearings, and the left and right counter fulcrum shafts 165 are separately supported by the left and right ball bearings. Therefore, since the screwed portion between the feed amount adjusting screw portion 157 of the feed amount adjusting shaft 158 and the female screw portion of the position adjusting body 164 is screwed, rattling is likely to occur, and the rotation position of the counter support member 163 is determined. Although it tends to cause instability, ball bearings are provided on the left and right sides of the threaded portion to support the position adjustment body 164 so that the rotational position of the counter support member 163 can be stabilized. Optimization of feeding amount adjustment and stabilization of the feeding amount of fertilizer of the fertilizer application device 5 can be achieved.

As shown in FIG. 12, a feed amount display screw portion 173 is provided at a portion of the feed amount adjustment shaft 158 in front of the shaft support member 160, and a feed amount display having a female screw portion 174a screwed to the screw portion 173. A tool 174 is provided. The feed amount display tool 174 engages with a long hole portion 176 provided on the right side portion of the cover 175 that covers the feed amount display screw portion 173, and a part of the feed amount display tool 174 protrudes to the right side of the cover 175. And is supported so as not to rotate with respect to the cover 175, and is supported by the elongated hole 176 so as to be movable in the direction of the feed amount adjustment shaft 158. It is configured to move in the direction of the shaft 158 with the movement. A scale 177 is attached to the edge of the long hole portion 176 of the cover 175 in the direction of the long hole, and a mark 178 is attached to the feeding amount display 174, and work is performed while reading the scale 177 indicated by the mark 178. The person recognizes and adjusts the feed amount of fertilizer.
The feeding amount adjusting shaft 158 is provided so as to be inclined in a front-up posture in a side view, and an electric motor 159 provided at the front end portion of the feeding amount adjusting shaft 158 is disposed in front of the fertilizer feeding portion 61.

  Further, as shown in FIG. 13, the fertilizing power transmitted to the feeding drive shaft 105 is rotatably fitted to the feeding drive shaft 105 via fertilizer rod clutches 106,. Are transmitted to the cylinder shafts 107. Then, it is transmitted from each cylindrical shaft 107 to each feeding shaft 75 via a pair of feeding transmission gears 108a and 108b. The drive-side feeding transmission gear 108a is slidably fitted to the cylindrical shaft 107, and the gear 108a can be shifted to release the engagement between the pair of feeding transmission gears 108a and 108b. That is, it is configured as a single-line clutch 108 that turns on and off the fertilization operation for each line.

  Referring to FIG. 4, the fertilizer rod clutch 106 (1, 2) for turning on and off the first and second fertilizing operations from the left and the third and fourth fertilizing operations are turned on and off. Fertilizer application clutches 106 (3, 4) are provided at intervals between the second fertilizer feed unit 61 and the third fertilizer feed unit 61, respectively. The fertilizer rod clutch 106 (5, 6) for turning on and off the fertilizing operations of the fifth and sixth articles is provided on the right side of the fertilizer feeding part 61 of the sixth article, that is, on the right end of the fertilizing apparatus 5. As shown in FIG. 4, the fertilizer clutch levers 110 (1, 2), 110 (3, 4), and 110 (5, 6) for operating these fertilizer fertilizer clutches 106 are pivoted up and down with their tips protruding forward. It is provided to be operated dynamically. The left and right rear wheels 11, 11 are, in plan view, an interval between the first fertilizer feeding part 61 and the second fertilizer feeding part 61 and the fifth fertilizer feeding part 61 and the sixth fertilizer feeding part 61. The rear wheels 11 and 11 and the saddle clutch lever 110 are arranged so as not to be between the same fertilizer feeding parts.

  Further, as shown in FIG. 4, the single-line clutch 108 (1) for turning on / off the first fertilization operation from the left and the single-line clutch 108 (2) for turning on / off the second fertilization operation from the left are It is provided at the interval between the first and second stripes. Similarly, the single-line clutch 108 (3) and the single-line clutch 108 (4) are provided at the interval between the 3rd line and the 4th line, and the single line clutch 108 (5) and the single line clutch 108 (6) are the 5th line. It is provided in the interval part of the 6th line. These single clutches 108,... Are operated by a switching knob 111.

  At the time of the fertilization work, the feeding rolls 73A and 73B are rotated forward (in the direction of the arrow in FIG. 6), and the fertilizer in the fertilizer storage tank 60 is fed downward from the feeding outlet 61a. The fertilizer fed from the feed outlet 61a is carried by the pressure wind blown from the blower 67 through the tubular portion and the fertilizer transfer hose 62, discharged from the tip discharge port of the fertilizer transfer hose 62 to the fertilizer application guide 63, and supplied to the field. The The feed amount adjusting mechanism 156 can change the rotation speed of the feed drive shaft 105 to adjust the fertilizer discharge amount steplessly.

At the time of collecting fertilizer, the fertilizer in the fertilizer storage tank 60 is discharged from the fertilizer discharge port 83. The discharged fertilizer is carried by the pressure wind blown from the blower 67 through the fertilizer collection pipe 85 and the collection chute 87, and is discharged from the collection port at the tip of the collection chute and collected in a collection container or the like.
Further, the hook clutch levers 110,... Are connected to cables 120,... For turning the planting hook clutches,.畦 Since the clutch levers 110 are provided between the powder feeding parts without the rear wheels, the cables 120 are routed without interfering with the fertilizer transfer hoses 62 and the rear wheels 11 and 11. Is possible.

  Further, when the feeding transmission shaft 105 is driven by the electric motor 159, the first and second fertilization operations are turned on and off by the rotation sensors 184 (1) to 184 (3) of the feeding transmission shaft 105, respectively. Turn fertilizer application clutch 106 (1 and 2) and fertilizer application of Articles 3 and 4 on and off Apply fertilizer clutch 106 (3 and 4) and ferment application of Articles 5 and 6 The rotation speed of the fertilizer kneading clutch 106 (5, 6) is detected, and the rotation of the feeding transmission shaft 105 is controlled by the control device 100 (FIG. 15). As a result, even if there is a difference in the rotation speed of each feeding roll 73 due to the operation of each hook clutch lever 110, the feeding transmission shaft rotational speed detection sensor 117 that detects the rotational speed of the feeding transmission shaft 105 can set the fertilizing amount with high accuracy. Is possible. Moreover, it is good also as a structure which can monitor and display the usage-amount of a fertilizer.

  As described above, the riding-type rice transplanter 1 is provided with the seedling planting portion 4 on the rear side of the traveling vehicle body 2 including the engine 20 serving as a prime mover, and on the front side of the seedling planting portion 4 on the rear upper side of the traveling vehicle body 2. A plurality of fertilizer storage tanks 60 serving as powder storage tanks and a fertilizer feeding unit 61 serving as a powder feed unit for feeding out the powders in the tank 60 are provided, and power from the engine 20 is fertilized at the rear of the traveling vehicle body 2. Drive that branches and transmits to the seedling planting unit 4 and the fertilizer feeding unit 61 in the planting clutch case 25 serving as a transmission branching unit provided below the feeding unit 61 and extends vertically from the planting clutch case 25 The side rocking rod 132 is reciprocated in the vertical direction to be transmitted to the fertilizer feeding unit 61, and a drive gear 147 and a driven gear 148 provided between the transmission paths from the driving side rocking rod 132 to the fertilizer feeding unit 61. Configured speed increase Transmission speed is accelerated by the moving parts to fertilizer feeding unit 61.

  Therefore, this riding type rice transplanter 1 uses the power from the engine 20 provided in the traveling vehicle body 2 to operate the seedling planting unit 4 while planting the machine body to plant seedlings and to operate the fertilizer feeding unit 61. Then, the granular fertilizer in the fertilizer storage tank 60 is fed out and applied to the side of the seedling planting position in the field. The fertilizer feeding unit 61 is transmitted upward by a reciprocating operation in the vertical direction of a drive-side swing rod 132 extending in the vertical direction from a planting clutch case 25 provided below the fertilizer feeding unit 61. Further, it is transmitted from the drive-side rocking rod 132 to the fertilizer feeding unit 61 via the speed increasing transmission unit.

  Thus, transmission to the fertilizer feeding unit 61 is performed at a desired transmission speed even if the operation stroke of the reciprocating operation in the vertical direction of the drive-side rocking rod 132 is relatively small by the amount transmitted to the fertilizer feeding unit 61 via the speed increasing transmission unit. Therefore, vertical vibrations can be suppressed in the airframe due to the reciprocating operation of the drive-side swing rod 132 in the vertical direction, and propagation of vibrations to the operator sitting on the seat 31 in the traveling vehicle body 2 can be suppressed and the operator's It is possible to maintain the habitability satisfactorily and to stabilize the amount of fertilizer fed while maintaining the desired amount of fertilizer fed by the fertilizer feeding unit 61 by setting the feeding drive shaft 105 to a desired rotational speed.

  In addition, the riding type rice transplanter 1 transmits a drive-side swing rod by transmitting to the right one-way clutch 136R through a reverse transmission mechanism among the pair of one-way clutches 136L and 136R that transmit in the same rotational direction. In the reciprocating operation from 132, power in opposite directions is transmitted to the pair of one-way clutches 136L and 136R, and both the forward operation and the returning operation in the reciprocating operation are transmitted by either one-way clutch 136L or 136R. Further, a speed increasing transmission portion is provided on the transmission upper side from the feeding transmission gear 108a which becomes a transmission branching portion to each fertilizer feeding portion 61 on the lower transmission side from the pair of one-way clutches 136L and 136R.

  Accordingly, by transmitting the reciprocating operation from the drive-side swing rod 132 to the right one-way clutch 136R through the reverse transmission mechanism, both the forward operation and the reverse operation in the reciprocating operation are performed as a pair of one-way clutches 136L, 136R. The reciprocating operation from the drive-side rocking rod 132 is continuously transmitted to the one-way clutch shaft 137 by the pair of one-way clutches 136L and 136R. Then, the continuous rotation transmission of the one-way clutch shaft 137 by the pair of one-way clutches 136L and 136R is transmitted to the speed increasing transmission portion, and rotates integrally with the shaft 105 from the speed increasing transmission portion via the feeding drive shaft 105. The transmission is branched by the plurality of feeding transmission gears 108 a and transmitted to the plurality of fertilizer feeding sections 61.

  Therefore, the pair of one-way clutches 136L and 136R can continuously transmit the reciprocating operation from the drive-side rocking rod 132 to continuously feed the fertilizer by the fertilizer feeding unit 61, and a pair of one-way clutches. Since transmission by any of the clutches 136L and 136R is transmitted to the speed increasing transmission section, and transmission to any of the plurality of fertilizer feeding sections 61 is transmitted through the speed increasing transmission section, a plurality of fertilizer feeding sections The transmission speed to each of 61 becomes uniform and stable, and the fertilizer feed amount of each fertilizer feed part 61 can be stabilized uniformly.

  In addition, the riding-type rice transplanter 1 is provided with a plurality of fertilizer feeding portions 61 arranged side by side on the rear side of the seat 31 of the traveling vehicle body 2, and a fertilizer storage tank 60 is provided above the fertilizer feeding portion 61. The fertilizer of the fertilizer feeding part 61 is transmitted to the fertilizer feeding part 61 through a driven side swinging rod 134 extending forward from a counter arm 133 provided on the rear side of the part 61, and the rotating shaft 162 of the counter arm 133 is moved. The feed amount adjustment shaft 158 of the feed amount adjustment mechanism 156 for changing and adjusting the feed amount is extended from the counter arm 133 to the front upper side, and an electric motor 159 and a feed amount display tool 174 that serve as operating tools of the feed amount adjustment mechanism 156 are provided. It arrange | positions ahead of the fertilizer supply part 61. FIG.

  Accordingly, the counter arm 133 is actuated to transmit to the plurality of fertilizer feeding sections 61 via the driven-side swing rod 134, and the fertilizer feeding section 61 is actuated to feed out the fertilizer in the fertilizer storage tank 60 and apply it to the field. Then, the operator operates the electric motor 159 of the feed amount adjustment mechanism 156 while confirming the feed amount adjustment position from the seat 31 side of the traveling vehicle body 2, that is, the front side, with the feed amount display tool 174, thereby rotating the counter arm 133. The fertilizer supply amount of the fertilizer supply unit 61 can be changed and adjusted by moving the shaft 162. The feed amount adjusting mechanism 156 is arranged on the left or right side (left side) of the fertilizer transmission mechanism 27 provided between the fertilizer feed portions 61 arranged on the left and right sides, and the side of the feed amount adjustment mechanism 156 on the fertilizer transmission mechanism 27 side. Since the feeding amount display tool 174 is provided in the portion (right side portion), the operator can feed the feeding amount display tool from the opposite side (right side) without the adjacent (left) fertilizer feeding portion 61 being in the way. Since 174 is visually recognized, the feeding amount display 174 can be easily visually recognized. Moreover, since the feed amount adjusting shaft 158 extends from the counter arm 133 to the front upper side, and the electric motor 159 and the feed amount display tool 174 are disposed on the front side from the fertilizer feed portion 61, the electric motor 159 and the feed amount display tool are provided. Since 174 is arranged at a relatively high position with respect to the counter arm 133 and thus the fertilizer feeding unit 61, the fertilizer remaining in the fertilizer feeding unit 61 is maintained at the electric motor 159 and the feed amount indicator when the fertilizer feeding unit 61 is maintained. 174 and so on.

  Since the electric motor 159 can be operated while confirming the feed amount adjustment position by the feed amount display tool 174, the fertilizer feed amount of the fertilizer feed portion 61 can be finely adjusted with high accuracy. Moreover, since the electric motor 159 and the feed amount display tool 174 are arranged in front of the fertilizer feed portion 61, the fertilizer feed portion 61 becomes an obstacle when the feed amount is adjusted from the seat 31 side of the traveling vehicle body 2, that is, the front side. It is difficult to adjust the feeding amount easily. Moreover, since the electric motor 159 and the feed amount display 174 are arranged at a relatively high position and it is difficult for the fertilizer to be applied, the operation of the feed amount adjusting mechanism 156 can be optimized. The feed amount adjusting shaft 158 is provided with a feed amount display screw portion 173 and a feed amount adjustment screw portion 157 that are distributed in the front-rear direction with respect to the fertilizer feed portion 61, and a feed amount display screw portion 173 and a feed amount adjustment screw portion. Since 157 is not disposed in the vicinity of the side of the fertilizer feeding portion 61, it becomes difficult for the fertilizer to be applied to the feeding amount display screw portion 173 and the feeding amount adjustment screw portion 157, and the operation of the feeding amount adjustment mechanism 156 is optimized. Can be planned.

  Further, a one-way clutch shaft 137 is disposed in front of the feeding drive shaft 105 and the relay shaft 143, and maintenance of the one-way clutches 136L and 136R is performed without disturbing the feeding drive shaft 105 and the components of the reverse transmission mechanism. Can be easily performed from the seat 31 side of the traveling vehicle body 2, that is, from the front side.

  A vehicle speed sensor 112 (FIG. 15) for detecting a rotation pulse of a rear wheel drive shaft (not shown) is provided so that the amount of fertilization can be increased or decreased according to the detected vehicle speed. That is, adjustment of increase / decrease in fertilizer application amount adjusts the rotational speed of the feeding rolls 73A and 73B in accordance with the rotational speed of the feeding drive shaft 105 corresponding to a preset vehicle speed. The rotation speed of the feeding rolls 73A and 73B is adjusted by the fertilizer feeding electric motor 159 according to the rotation speed of the feeding drive shaft 105 set in advance.

  Based on the traveling speed of the traveling vehicle body 2, the rotational speed of the feeding rolls 73 </ b> A and 73 </ b> B of the fertilizer application device 5 is changed by a fertilizer feeding electric motor 159 by a preset change amount, whereby the traveling speed changes and the feeding rotating body 73 </ b> A , 73B, the amount of fertilizer supplied to the feeding rotary bodies 73A, 73B can be kept constant even when the rotational speed of the running car body 2 increases, for example, the feeding rolls 73A, 73B. Is slowed more than the proportional relationship, the amount of fertilizer discharged from the feeding rolls 73A, 73B is prevented from being reduced and the fertilizer is insufficient, the growth of the seedling is improved, and the traveling of the traveling vehicle body 2 When the speed is reduced, the rotation speed of the feeding rolls 73A and 73B is changed by changing the rotation of the feeding rolls 73A and 73B to be greater than the proportional relationship. Faster to feed rolls 73A, 73B is the amount of fertilizer to be discharged fertilizer increased prevented be a glut at a time.

Thus, for example, even if the traveling speed of the seedling transplanter increases, the amount of fertilizer supplied to the field from the feeding rolls 73A and 73B relative to the unit length of the field can be increased by increasing the rotational speed of the feeding rolls 73A and 73B. A certain amount can be maintained, the amount of fertilizer for the seedling is reduced, and it is prevented that the fertilizer is insufficient, and the growth of the seedling is improved.
Moreover, even when the running speed of the seedling transplanting machine is slow, the amount of fertilizer fed from the feeding rolls 73A and 73B can be prevented and an excessive supply of fertilizer to the field can be prevented. And pollution of water quality is prevented.

  Further, when the vehicle speed sensor 112 does not detect the traveling speed of the seedling transplanter (traveling stopped state), the operation of the fertilizer blower 67 is stopped. Further, even when the vehicle speed sensor 112 does not detect the traveling speed of the seedling transplanter (traveling stopped state), the fertilizer discharge lever sensor 116 (see FIG. 9) that detects the operating state of the fertilizer recovery lever 90 (FIG. 9) of the fertilizer transmission mechanism 27. 15), when it is detected that the fertilizer collecting lever 90 is operated to the “discharge” side of the fertilizer, the operation of the fertilizer blower 67 is not stopped.

  When the vehicle speed sensor 112 does not detect the traveling speed of the seedling transplanter, that is, when the traveling is stopped, the fertilizer blower 67 is stopped, so that the wind discharged from the fertilizer blower 67 splashes mud and water in the field. Therefore, it is possible to prevent clogging of the fertilizer supply route, so that the fertilizer is prevented from being supplied to the field, and the growth of the seedling is stabilized. Moreover, since the blower 67 continues to be operated, the fertilizer supply path is not clogged, and the work for removing the mud that has entered the fertilizer supply path is omitted, thereby reducing the labor of the operator.

Furthermore, since the fertilizer blower 67 is driven when the fertilizer recovery lever 90 of the fertilizer transmission mechanism 27 is operated to the “discharge” side of the fertilizer even while traveling is stopped, the fertilizer can be reliably supplied to the field when traveling is resumed. There is no risk of a shortage area.
In addition, since the vehicle speed sensor 112 is provided on the drive shaft of the rear wheel 11, since the traveling speed of the seedling transplanter can be directly detected and reflected in the amount of fertilization, an appropriate amount of fertilizer is applied to the field, The growth of the seedling is improved and the growth failure due to excessive fertilization is prevented.
When the vehicle speed sensor 112 is provided on the feeding drive shaft 105 of the fertilizer application device 5, it is possible to determine the fertilization amount corresponding to the rotation of the transmission mechanism of the fertilizer application device 5 due to the change in the vehicle speed, so that an appropriate amount of fertilizer is applied to the field. The growth of the seedling is improved and the growth failure due to excessive fertilization is prevented.

When replenishing a cocoon feeding device (not shown) installed on the seedling planting unit 4 of the seedling transplanting machine, the position of the cocoon feeding device is too high to replenish unless the seedling planting unit 4 of the seedling transplanting machine is lowered. Therefore, the seedling planting part 4 is lowered and the cocoon is supplied to the cocoon feeding device.
As a result, water and mud in the farm scene may be splashed by the wind of the blower 67 while the reed is supplied to the reed supply device, and the reed supply device, the fertilizer application device 5 and their feeding portions may be clogged.

In order to solve this problem, the following program can be set up.
(1) A program in which the direct sowing blower (not shown) of the cocoon feeding device stops when the seedling transplanter is not running (FIG. 14A).
(2) A program in which the fertilizer blower 67 of the fertilizer applicator 5 stops when the seedling transplanter is not running (FIG. 14B).
(3) In the case of (2), if the fertilizer recovery lever 90 of the seedling transplanter is set to “discharge”, a program for turning on the fertilizer blower 67 may be provided (FIG. 14C).
(4) In the case of (2), even if the PTO, if the planting clutch 106 is set to “ON”, a program for turning the fertilizer blower 67 “ON” may be set up.

表１に示す各施肥量の多少・種類の選択は次のような理由による。
すなわちｐＨが高く（約７．５〜８．５）、ＥＣ値が高い場合は、圃場の窒素（Ｎ）成分が多く且つその他の肥料成分（Ｐ，Ｋ等）も多いと判断できるので、施肥量を少なくする。従って、養分過多となって苗が軟弱になることを防止するために、施肥量を少なくする。 また、ｐＨが高く、ＥＣ値が低い場合は、圃場の窒素成分が不足していると判断できるので、窒素成分の比率の高い肥料を施す。
そして、ｐＨが低く、ＥＣ値が高い場合は、圃場の窒素成分は多いもののその他の成分が不足していると判断できるので、窒素成分の比率の低い肥料を施す。
また、ｐＨが低く、ＥＣ値も低い場合は、圃場の各種成分が不足しているので、施肥量を多くする。
こうして、土壌分析型の可変施肥装置を用いることで、一回の作業で適切な施肥が行える。 The fertilizer 5 provided in the seedling transplanter of the present embodiment can be a soil analysis type variable fertilizer.
In other words, it measures the pH (acid / alkalinity) and EC (electrical resistance value) of the soil in the field, and controls the fertilizing amount and fertilizing content with the contents shown in Table 1 by combining those measured values. is there.

The selection of the amount and type of each fertilizer shown in Table 1 is as follows.
That is, when the pH is high (about 7.5 to 8.5) and the EC value is high, it can be judged that there are a lot of nitrogen (N) components in the field and other fertilizer components (P, K, etc.). Reduce the amount. Therefore, the amount of fertilization is reduced in order to prevent over-nutrition and softening of the seedling. Further, when the pH is high and the EC value is low, it can be determined that the nitrogen component in the field is insufficient, and therefore fertilizer with a high ratio of nitrogen component is applied.
And when pH is low and EC value is high, since it can be judged that other components are insufficient although there are many nitrogen components in the field, fertilizer with a low ratio of nitrogen components is applied.
When the pH is low and the EC value is low, the amount of fertilizer is increased because various components in the field are insufficient.
Thus, by using the soil analysis type variable fertilizer, appropriate fertilization can be performed in one operation.

  The pH meter and EC meter are not only made compact by being installed in a single measuring device with the base side attached in the vicinity of the attachment part of the center float 55 to the transmission case 50, but the seedlings can Even if the planting depth is changed, the pH value and EC value of the soil can always be measured. Since the EC value has temperature dependence, a thermometer that can measure the temperature of the soil may be provided. Thus, fertilization can be performed with high accuracy while performing soil analysis.

The fertilizer feeding portions 61 corresponding to the number of seedlings shown in FIG. 3 are provided with fertilizer feeding clutches 106, respectively, and the fertilizer feeding portions 61 where the fertilizer feeding clutch 106 is operated from inside the fertilizer feeding hose 62. The fertilizer that falls to the seedlings is sent from the blower 67 through the air chamber 68 to each seedling planting strip.
At this time, when the fertilizer rod clutch 106 of the planting line that does not perform seedling planting is cut, a shutter 84 (FIG. 6) that blocks air flow to the corresponding fertilizer feed unit 61 is provided for each blower inlet of the fertilizer feed unit 61. Yes.

Conventionally, since the shutter was not provided, when the fertilizer rod clutch 106 of the planting line where seedlings are not planted is cut, the fertilizer does not fall from the fertilizer feeding unit 61, so the wind to the fertilizer feeding unit 61 is resisted. It flows without. As a result, the amount of air blown to the fertilizer feeding unit 61 that is fertilizing may be reduced.
However, by adopting the above-described configuration, even if the fertilizer supply clutch 106 corresponding to the fertilizer feeding unit 61 with the shutter closed is disconnected, the air flow rate to the fertilizer feeding unit 61 that performs other fertilization is not reduced. You can continue blowing.

DESCRIPTION OF SYMBOLS 1 Riding type rice transplanter with fertilizer 2 Traveling vehicle body 3 Elevating link device 4 Seedling planting part 5 Fertilizer 10 Front wheel 11 Rear wheel 12 Transmission case 13 Front wheel final case 15 Main frame 18 Rear wheel gear case 20 Engine 21 First belt transmission device 23 HST
25 Planting clutch case 26 Planting transmission shaft 27 Fertilizer transmission mechanism 30 Engine cover 31 Seat 32 Front cover 34 Handle 35 Floor step 36 Rear step (fender)
38 Preliminary seedling stage 40 Upper link 41 Lower link 42 Link base frame 43 Vertical link 44 Connecting shaft 45 Swing arm 46 Lifting hydraulic cylinder 47 Fixed plate 48 Airframe side frame 48a Pin 49 Fertilizer application side frame 49a Patchon lock 50 Transmission case 51 Seedling Platform 51a Seedling outlet 51b Seedling feed belt 52 Seedling planting device 52a Seedling planting tool 53 Drawing marker 54 Tilt position locking plate 54a Long hole 54b Hole 54c Rotation fulcrum 55 Center float 56 Side float 57 Vertical motion detection mechanism 58 Feeding amount adjustment rod support plate 60 Fertilizer hopper 60a Lid 61 Feeding part 61a Discharge port 62 Fertilizer hose 63 Fertilizer guide 64 Groove body 66 Electric motor 67 Blower 68 Air chamber 68a Rubber tube 68b Resin tube 71 Rotating arm 72 Locking tool 7 A, 73B feed roll 74 recess 75 unwinding shaft 75a square shaft portion 76 Brush
77A, 77B Feeding stop shutter 77a Handle 78 Feeding part case 78a Fixing part 78b Separating part 79 Slide support part 80 Connection pipe 81 Air switching pipe 82 Capsule wear prevention plate 82a Rotating shaft 83 Fertilizer discharge port 84 Discharge shutter 84a Rotating shaft 85 Fertilizer recovery pipe 86 Air switching shutter 86a Rotating shaft 87 Fertilizer recovery port 90 Fertilizer recovery lever 90a Rotating fulcrum shaft 90b Pin 91 Shutter opening / closing transmission shaft 92 Fan-shaped plate 92a Long hole 93 Opening / closing gear 94 Semi-circular gear 94a Stopper section 95 Air switching Wire 96 Arm 97 Spring 98 Lever guide 98a, 98b Guide hole 100 Control device 105 Feeding drive shaft 106 Fertilizer rod clutch 107 Tube shaft 108 Single-line clutch 108a, 108b Feeding transmission gear 110 畦 Clutch lever 111 Knob 112 Vehicle speed Sensor 113 Alarm device 116 Fertilizer discharge lever sensor 117 Feeding transmission shaft rotational speed detection sensor 120 Cable 131 Crank arm 132 Driving side swing rod 133 Counter arm 134 Driven side swing rod 135 Feeding input arms 136L and 136R One-way clutch 137 One-way Clutch shaft
138L, 138R Outer ring portion 139 Transmission roller 140 First arm 141 Second arm 142 First link 143 Relay shaft 144 Third arm 145 Second link 146 Fourth arm 147 Drive gear 147a Key 148 Drive gear 149 Seal material 149a Outside Sealing material
150L, 150R Reverse support member 151 Base frame 152 Clamping bolts 153, 154, 155 Ball bearing 156 Feed amount adjustment mechanism 157 Feed amount adjustment rod 158 Feed amount adjustment shaft 159 Electric motor 160 Shaft support member 160a Support fulcrum shaft 161 Adjustment shaft Support frame 162 Rotating shaft 163 Counter support member 163a Plate portion 163b Front plate portion 164 Position adjusting body 165 Counter fulcrum shaft 166 Hole 167 Reinforcement member
173 Screw portion for feeding amount display 174 Feeding amount display tool 174a Female screw portion 175 Cover 176 Long hole portion 177 Scale 178 Marks 184 (1) to 184 (3) Rotation sensor

Claims (4)

A traveling vehicle body (2) that includes a front wheel (10) and a rear wheel (11), and that travels in a field;
A seedling planting part (4) provided on the rear part of the traveling vehicle body (2) via a lifting link device (3);
From the fertilizer hopper (60) provided on the traveling vehicle body (2), the fertilizer is fed from the fertilizer hopper (60), and the rotating body (73A, 73B) is rotated and fed from the feeding portion (61) and the feeding portion (61). A fertilizer applicator (5) having a fertilizer blower (67) for blowing and conveying the fertilizer of
Traveling speed detection means (112) for detecting the traveling speed of the traveling vehicle body (2);
A control device (100) for controlling the rotational speed of the feeding rotary bodies (73A, 73B) in the feeding section (61) according to the traveling speed detected by the traveling speed detecting means (112).
A seedling transplanter characterized in that   The control device (100) sets the fertilizer blower (67) to “ON” when the travel speed detecting means (112) starts detecting the travel speed, and applies the fertilizer blower when the travel speed detecting means (112) does not detect the travel speed. The seedling transplanting machine according to claim 1, further comprising a control for controlling (67) to "cut".   The seedling transplanting machine according to claim 1 or 2, characterized in that the traveling speed detecting means (112) is provided on the drive shaft of the rear wheel (11) of the traveling vehicle body (2).   The seedling transplanter according to claim 1 or 2, characterized in that the running speed detecting means (112) is provided on the feeding drive shaft (105) of the fertilizer applicator (5).

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