JP2003230309A - Sulky seedling planting machine with fertilizer applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sulky seedling planting machine equipped with a fertilizer applicator, solving the problem that a conventional sulky rice transplanter with a fertilizer applicator which is provided with a seat on the upper part of the machine body equipped with front and rear wheels and is also provided with a fertilizer hopper, and a fertilizer delivery section of the fertilizer applicator behind the seat is long in the whole length of the machine body because of the above structure and cannot be miniaturized, resulting in poor steering operability in the framing field. <P>SOLUTION: This sulky seedling planting machine equipped with the fertilizer applicator has the following structure: a traveling vehicle body 2 equipped with front wheels 10 and rear wheels 11 under the machine body is mounted with a seedling planting section 4 and the fertilizer applicator 5, wherein at least the fertilizer hopper 60 and a fertilizer delivery section 61 of the fertilizer applicator 5 are placed in a space lying under covers 30 and 35 covering the machine body and defined by the front wheels 10 and the rear wheels 11 when viewed sideways of the machine body, and the covers 30 and 35 are at least longitudinally divided into two in front of the fertilizer hopper 60 and the fertilizer delivery section 61. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a riding-type seedling plant with a fertilizer application such as a fertilizer-equipped riding-type rice transplanter with a fertilizer-applying device, a riding-type vegetable transplanter with a fertilizer-applying device, and a riding-type rush transplanter with a fertilizer-applying device. Regarding the machine.

[0002]

2. Description of the Related Art Conventionally, there is a riding type rice transplanter with a fertilizer application, which is provided with a seat on an upper portion of a machine equipped with front wheels and rear wheels, and a fertilizer hopper and a feeding section of a fertilizer application are provided behind the seat.

[0003]

In the conventional riding type rice transplanter with fertilizer application, since the fertilizer hopper and the feeding section of the fertilizer application are provided at the rear of the seat, the total length of the machine becomes long,
I could not get a small riding rice transplanter with a fertilizer application,
There was a problem in maneuverability in the field.

[0004]

In order to solve the above-mentioned problems, the invention according to claim 1 is a traveling vehicle body 2 equipped with a front wheel 10 and a rear wheel 11 at the lower part of the machine body, a seedling planting section 4 and a fertilizer application device 5. In the riding type seedling planting machine equipped with a fertilizer application, at least the fertilizer of the fertilizer application device 5 is provided below the covers 30 and 35 for covering the machine body and in the space formed by the front wheel 10 and the rear wheel 11 in the machine body side view. While providing the hopper 60 and the feeding section 61,
The cover 30 is provided in front of the fertilizer hopper 60 and the feeding section 61.
-35 is a riding type seedling planting machine with a fertilizer application, which is divided into at least two in the front and rear. Therefore, the cover 3 that covers the airframe
By arranging at least the fertilizer hopper 60 and the feeding section 61 of the fertilizer application device 5 by effectively utilizing the space formed by the front wheels 10 and the rear wheels 11 below 0.35, the overall length of the machine is short and compact. It is possible to obtain the riding type seedling planting machine with the fertilizer application described above, and moreover, the center of gravity of the machine can be configured to be lower than in the past, and the maneuverability in the field is good, and efficient work can be performed. Further, since the fertilizer hopper 60 and the feeding section 61 are configured to be covered above by the covers 30 and 35 for covering the machine body, it is possible to prevent the fertilizer hopper 60 and the feeding section 61 from being extremely wet due to rain or the like. It is possible to prevent a situation in which the fertilizer cannot be properly fed out due to dampness, and good fertilization work can be performed.

The invention according to claim 2 is at least 2 before and after.
Of the divided covers 30 and 35, the cover 30 located above the fertilizer hopper 60 and the feeding unit 61 is configured to be able to rotate its front portion upward around a rotation support shaft 30a provided in the rear portion. It is a riding-type seedling planting machine with a fertilizer application described in 1. Therefore, in addition to the effect of the invention as set forth in claim 1, the cover 30 located above the fertilizer hopper 60 and the feeding portion 61 can be easily rotated by rotating the front portion thereof upward around the rear rotation support shaft 30a. Since the upper part of the fertilizer hopper 60 and the feeding unit 61 can be opened, maintenance of the fertilizer hopper 60 and the feeding unit 61 and operation of various fertilizer hoppers 60 and feeding unit 61 such as supplying fertilizer to the fertilizer hopper 60 can be easily performed. I can perform well.

[0006]

According to the present invention, it is possible to obtain a small-sized ride-on type seedling plant with a fertilizer application, which has a short overall length and a low center of gravity, which improves the maneuverability in the field and is highly efficient. You can work. Therefore, the problem of the conventional example can be appropriately solved.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a riding-type rice transplanter with a fertilizer application, which is an example of the present invention. In this riding-type rice transplanter 1 with a fertilizer application, a seedling planting section 4 is mounted on the rear side of a traveling vehicle body 2 via an elevating link device 3 so as to be able to move up and down. The main part of the fertilizer application device 5 is provided in the center of the machine body between the wheel 11.

The traveling vehicle body 2 is a four-wheel drive vehicle having a pair of left and right front wheels 10 and 10 and rear wheels 11 and 11, which is a drive unit, in which a mission case 12 is arranged at the front of the machine body. Front wheel final cases 13 and 13 are provided on the left and right sides of the mission case 12, and the front wheels 10 and 10 are attached to front wheel axles that project outward from a deflectable front wheel support portion of the front wheel final case. Also,
Left and right main frames 1 on the back of the mission case 12.
The front end portions of the rear wheel gear cases 18, 1 are fixed to the front and rear main frames 15, 15 with the rear wheel rolling shafts provided horizontally at the rear end left and right central portions of the left and right main frames 15, 15 as fulcrums.
8 is rotatably supported, and the rear wheel gear case 1
Rear wheels 11, 1 on the rear wheel axle protruding outward from 8, 18
1 is attached.

The engine 20 is mounted on the mission case 12 at the front of the fuselage, and the rotational power of the engine is
It is transmitted to the transmission case 12 via the transmission belt 21. The rotational power transmitted to the mission case 12 is
After the speed is changed by the transmission in the case, the power is separated into the traveling power and the external extraction power and is extracted. And a part of the driving power is the front wheel final case 13,1.
3 is transmitted to drive the front wheels 10, 10, and the rest is transmitted to the rear wheel gear cases 18, 18 to rear wheels 11, 1.
Drive 1 Further, the external extraction power is transmitted to the planting clutch case 25 provided at the rear portion of the traveling vehicle body 2, and then transmitted to the seedling planting section 4 by the planting transmission shaft 26, and at the same time, the fertilizer transmission mechanism 27 forms the fertilizer application device 5. Is transmitted to.

The upper part of the fertilizer application device 5 is covered with a rear cover 30 formed of synthetic resin, and a seat 31 whose front part is rotatably supported forward by a rotary support shaft 31a thereon. Is installed. In front of the seat 31, there is a front cover 32 formed of synthetic resin having various operating mechanisms built in, and a handle 34 for steering the front wheels 10, 10 is provided above the front cover 32. Floor steps 35 made of horizontal synthetic resin are provided on the left and right sides of the lower end of the front cover 32 and on the rear side thereof. The left and right sides of the rear cover 30 are rear steps 36 that also serve as rear wheel fenders. Further, on the left and right sides of the front part of the traveling vehicle body 2, preparatory seedling mounts 38, 38 on which seedlings for supply are placed can be pivoted to a position projecting laterally beyond the body and a position housed inside. It is provided. On the other hand, the rear cover 30 has a structure in which the front part can be pivoted upward and opened by the rear pivot shaft 30a. Further, the floor step 35 covering the machine body and the rear cover 30 are divided on the front side of the main body portion of the fertilizer application device 5 described later.

The lifting link device 3 has a parallel link structure, and includes one upper link 40 and a pair of left and right lower links 41, 4.
1 is provided. These links 40, 41, 41 are rotatably attached to a rear-view portal type link base frame 42 whose base side is welded and fixed to the rear ends of the left and right main frames 15, 15 and a vertical link 43 is provided on the tip side thereof. Are connected. A connection shaft 44 rotatably supported by the seedling planting portion 4 is inserted and connected to the lower end of the vertical link 43, and the seedling planting portion 4 is connected to the seedling planting portion 4 so as to be rotatable around the connection shaft 44. A lifting hydraulic cylinder 46 is provided between a support member fixed to the left and right main frames 15, 15 and a tip end portion of a swing arm 45 integrally formed with the upper link 40. The link 40 rotates up and down, and the seedling planting part 4 moves up and down with a substantially constant posture.

The seedling planting section 4 has a 6-row planting structure, a transmission case 50 also serving as a frame, a mat seedling is placed and reciprocates left and right, and seedlings are supplied to each row of seedling take-out ports 51a ,. Also, when all the seedlings for one horizontal row are supplied to the seedling take-out port 51a, the seedling feeding belt 51b, transfers the seedling downwardly, the seedling table 51 and the seedlings supplied to the seedling take-out port 51a ,. A seedling planting device 52, which is planted in the field with the tool 52a, ..., A pair of left and right line drawing markers 53, 53 for drawing the machine course in the next stroke to the surface soil surface. In the lower part of the seedling planting section 4, a center float 55 is provided in the center, and side floats 56, 56 are provided on both left and right sides thereof. When the aircraft is advanced with these floats grounded on the mud surface of the field, the float slides while leveling the mud surface, and seedlings are planted by the seedling planting device 52, ...
The floats 55, 56, 56 are rotatably attached so that the front end side moves up and down according to the unevenness of the soil surface of the field, and the vertical movement of the front part of the center float 55 is a vertical movement detection mechanism during planting work. The planting depth of the seedlings is always kept constant by switching the hydraulic valve controlling the lifting hydraulic cylinder 46 according to the detection result to raise and lower the seedling planting section 4.

The fertilizer applicator 5 feeds out granular fertilizer stored in the fertilizer hopper 60 by a fixed amount by the feeding portion 61, ... And the fertilizer hose 62 ,.
Fertilizer guides 6 attached to both left and right sides of 5, 56, 56
, And is dropped into the fertilizer yard formed in the vicinity of the side portion of the seedling planting row by the groove making bodies 64, provided on the front side of the fertilizer guide 63. The air generated by the blower 67 driven by the motor 66 is blown into the fertilization hoses 62, ... Through the air chamber 68 that is long in the left-right direction, and the fertilizer in the fertilization hoses 62 ,. It is like this. The fertilizer hopper 60 and the feeding section 61, ..., and the main body of the motor 66, the blower 67, and the air chamber 68 of the fertilizer applicator 5 are the space between the front wheel 10 and the rear wheel 11 below the seat 31 in a side view of the machine. The main body part of the fertilizer application device 5 can be arranged by effectively utilizing the space below the seat 31. Therefore, the structure of the machine is simple and compact, which contributes to downsizing of the machine, and the overall length of the machine is short. The maneuverability of the aircraft is improved and the work efficiency in the field is improved.

The structure of each part of the fertilizer application main unit will be described below. The fertilizer hopper 60 is commonly used for each line, and the upper portion thereof is covered with a lid 60a formed integrally with the rear cover 30. That is, the upper portion of the fertilizer hopper 60 is covered with the lid 60a when the rear cover 30 is closed.
When 0 is opened around the rear rotation support shaft 30a, the upper portion of the fertilizer hopper 60 is opened and fertilizer can be supplied into the fertilizer hopper 60.

The lower part of the fertilizer hopper 60 is branched into a number of fertilization lines to form a funnel shape, and the lower part thereof is connected to the upper ends of the feeding parts 61, .... Left and right main frames 15,15
A fertilizer frame 70 that is long in the left-right direction is fixed to the fertilizer hopper 60, and the fertilizer hopper 60 is attached to two left and right rotary arms 71 supported by the fertilizer frame 70. The lower end of the rotary arm 71 is used as a fulcrum. It is rotated rearward to extend the feeding portion 61,
It can be separated from ... Rotating arm 7
1 is arranged between the first feeding portion and the second feeding portion from the outside. The lower part of the fertilizer hopper 60 is the fertilizer feeding part 6
At the normal position connected to the upper ends of 1, ..., The fertilizer hopper 60 is fixed by the locking tool 72.

The feeding section 61 contains two feeding rolls 73A and 73B for feeding the fertilizer in the fertilizer hopper 60 downward. These feeding rolls 73A, 73B are rotating bodies having groove-shaped recesses 74, ... Formed on their outer peripheral portions, and are provided on the angular shaft portion 75a (a square shaft in the illustrated example) of a common feeding shaft 75 provided in the left-right direction. They are fitted so that they rotate together.
By rotating the feeding rolls 73A and 73B in the direction of the arrow in FIG. 7, the fertilizer dropped and supplied from the fertilizer hopper 60 is accommodated in the recess 74 and fed downward. The fertilizer fed by both feeding rolls 73A and 73B is discharged from the discharge port 61a at the lower end.

The feeding rolls 73A and 73B in the illustrated example have six concave portions, and the phases of the concave portions are different. Therefore, the concave portions of both feeding rolls 73A and 73B alternately feed the fertilizer, and the amount of fertilizer discharged from the discharge port 61a is equalized in time. By removing one of the feeding rolls from the feeding shaft 75 and reattaching it by appropriately changing the phase, the phases of the concave portions of both feeding rolls 73A and 73B can be made equal. With this, it becomes possible to apply the case where the fertilizer is applied to the field in spots.

Further, a brush 76 slidably contacting the outer peripheral surface of the feeding roll 73 on the side where the recess 74 moves downward (front side) is detachably provided inside the feeding portion 61. With this brush 76, the concave portions 7 of the feeding rolls 73A and 73B
4, the fertilizer is stored in the state of scraping, and the feeding roll 73
The amount of fertilizer fed by A and 73B is kept constant.

Further, on the upper side of the brush 76, there are provided feeding stop shutters 77A and 77B which project above the feeding rolls 73A and 73B and prevent fertilizer from being dropped and fed from the fertilizer hopper 60 to the feeding portion 61. The feeding stop shutters 77A and 77B are slidably supported by a slide support portion 79 of a feeding portion case 78, and are configured to grab and slide a grip 77a formed at a front end portion outside the case.

A connecting pipe 80 communicating in the front-rear direction is connected to the discharge port 61a of the feeding portion 61. The fertilizer hose 62 is connected to the rear end of the connecting pipe 80. Since the lower end of the fertilization frame 70 is engaged with the outer peripheral spiral groove of the fertilization hose 62, the fertilization hose 62 is connected to the connecting pipe 8
It is hard to get out of 0. On the other hand, the front end portion of each connection pipe 80 is inserted and connected to the back surface portion of the air chamber 68. The left end of the air chamber 68 is connected to the blower 67 via an air switching pipe 81, and the air from the blower is blown into the fertilization hose 62 from the connecting pipe 80 via the air chamber 68.

Each fertilizer hose 62 ... Passes through the vicinity of the front rotation shaft, on which the lower links 41, 41 of the lifting link device 3 are rotatably attached to the link base frame 42, in the side view of the machine body, and the rear wheel 11 The fertilizer hoses 62 are arranged substantially horizontally so as to cross the inside diameter of the fertilizer application hose 62, and the fertilizer hose 62 has a smooth flow of fertilizer. Since the bend of the fertilizer is small, clogging of fertilizer can be prevented and good fertilization work can be performed.

The air chamber 68 is constructed by alternately connecting a rubber pipe 68a to which a connecting pipe 80 is attached and a resin pipe 68b in an intermediate portion. With this configuration, the air chamber 68 can be easily disassembled and assembled, so that maintenance can be easily performed by integrally removing the feeding portion 61. If the length of the rubber tube 68a is set longer than the distance between the pair of feeding portions, the resin tube 68b is moved to the rubber tube 68a.
Easy to pull out.

Further, a fertilizer discharge port 83 for taking out the fertilizer in the fertilizer hopper is formed on the back surface of the feeding section case 78. The fertilizer discharge port 83 is provided with a discharge shutter 84 which can be opened and closed with the upper end side as a fulcrum. The fertilizer discharge port 83 of each feeding section is connected to a fertilizer recovery pipe 85 provided in the rear of the feeding section 61 and long in the left-right direction. The left end of the fertilizer recovery pipe 85 is connected to the blower 67 via the air switching pipe 81. The air switching pipe 81 is a bifurcated pipe, one side of which is connected to the air chamber 68, and the other side of which is connected to the fertilizer recovery pipe 85. The air switching pipe 81 is provided with an air switching shutter 86 as an air switching unit, so that the air blown from the blower 67 can be switched between a state in which it is supplied to the air chamber side and a state in which it is supplied to the fertilizer recovery pipe side. ing. Air switching shutter 8
Since 6 is located in the front-rear center between the air chamber 68 and the fertilizer recovery pipe 85, the air supply to both is stable. The right end of the fertilizer recovery pipe 85 is a fertilizer recovery port 87.

The fertilizer recovery pipe 85 is provided with through holes 15a in the left-right direction provided in the left and right main frames 15, 15.
The fertilizer recovery pipe 85 is disposed so as to pass through the portion 15a, and is supported by the left and right main frames 15, 15. Therefore, since the left and right main frames 15 and 15 which are the machine body constituent members can be used also as the support members of the fertilizer recovery pipe 85, the supporting structure itself of the fertilizer application main body becomes simple, which contributes to the weight reduction of the whole machine body. It is possible to obtain a light-weight riding type rice transplanter with a fertilizer application device, and improve running performance and planting performance.

Here, the positional relationship between the left and right main frames 15, 15 and the fertilizer application main body will be described in more detail.
As described above, the left and right main frames 15, 15 are fixedly provided on the left and right between the rear part of the mission case 12 and the link base frame 42.
As shown in FIG. 4, six fertilizer application main body portions are provided in the front-rear direction between six feeding portions 61, which are arranged in the left-right direction (the second feeding portion 61 and the third feeding portion from the left). The left main frame 15 is positioned between the feeding section 61 and the feeding section 61, and the right main frame 15 is positioned between the second feeding section 61 and the third feeding section 61 from the right). . Therefore, since the left and right main frames 15 and 15 and the fertilizer application main body section are arranged so as to intersect with each other in a side view of the machine body, the support configuration (attachment configuration) of the fertilizer application main body section with respect to the left and right main frames 15 and 15 is set. The structure is simple and can further contribute to weight reduction of the aircraft.

In addition, the left and right main frames 1 in a side view of the machine body
The left and right front wheels 10, 10 are arranged above the left and right front wheels 10, 10, and even if the steering wheel 34 steers the left and right front wheels 10, 10, the left and right front wheels 10, 10 are left and right main frames 15, 1.
The front left and right wheels 10, 10
The tread can be set freely, and a traveling machine suitable for rice planting work can be configured. Since the left and right main frames 15, 15 are located relatively above the body, the structure for supporting the floor step 35 (or the rear cover 30 and the front cover 32) by the left and right main frames 15, 15 is simple. can do.

FIG. 9 is a view showing the opening / closing mechanism of each of the shutters 84, ..., 86. A fertilizer recovery lever 90 is rotatably provided near the fertilizer recovery port 87. The feeding portion 6 is coaxial with the rotation fulcrum shaft 90a of the fertilizer recovery lever 90.
A shutter open / close transmission shaft 91 that is long in the left-right direction and that is disposed on the front side of 1 is provided. A fan-shaped plate 92 is attached to the shutter opening / closing transmission shaft 91, and a pin 90b fixed to the fertilizer recovery lever 90 is loosely fitted in an arc-shaped long hole 92a formed in the fan-shaped plate 92. The shutter opening / closing transmission shaft 91 has an opening / closing gear 93 for each feeding portion.
Is attached to the rotary shaft 8 of the discharge shutter 84.
It meshes with a semicircular gear 94 attached to 4a. In addition, since the stopper portion 94a having a diameter larger than the tooth of the gear is formed at the end of the semicircular gear 94, the meshing of the both gears will not be disengaged. 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 rotating shaft 86a of the air switching shutter 86 via a tension spring 97 which is 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. While the amount of turning operation of the fertilizer recovery lever 90 is small, the pin 90b only moves in the long hole 92a.
1 does not rotate. However, when the fertilizer recovery lever 90 is rotated by a certain amount or more, the pin 90b engages with the fan-shaped plate 92 and the shutter opening / closing transmission shaft 91 rotates. As a result, the discharge shutters 84 ... Open and the fertilizer hopper 6
The fertilizer in 0 is discharged to the fertilizer recovery pipe 85. That is, 1
The air switching shutter 86 and the discharge shutters 84, ... Can be operated only by operating the lever of the book. Moreover, inevitably, air is first supplied to the fertilizer recovery pipe 85, and then the fertilizer is discharged to the fertilizer recovery pipe 85. Therefore, fertilizer is smoothly transported in the fertilizer recovery pipe 85, and the fertilizer recovery pipe 85 is not clogged with fertilizer. Further, since the fertilizer recovery lever 90 is provided in the vicinity of the fertilizer recovery port 87, a fertilizer recovery container or the like can be easily secured below the fertilizer recovery port 87, and the work can be performed while confirming the status of the fertilizer recovery. It is convenient.

The fertilizer recovery lever 90 is designed to be rotated along a lever guide 98. Guide holes 98a and 98b are formed in the lever guide 98,
The fertilizer recovery lever 9 is used by utilizing the bending of the fertilizer recovery lever 90.
By engaging an engaging portion (not shown) of 0 with the guide holes 98a and 98b, the fertilizer recovery lever 90 is switched to the position P1 where only the air switching shutter 86 is switched, the air switching shutter 86 and the discharge shutter 84 ,. Both can be fixed at the position P2 where they can be switched. The fertilizer recovery 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.

When the opening degree of the discharge shutter 84 can be adjusted as described above, the gear ratio of the open / close gear 93 and the semicircular gear 94 is changed for each strip, and the discharge portion of the discharge shutter 84 is closer to the feeding portion on the fertilizer recovery port side (leeward side). If you keep the gap small,
The flow of air in the fertilizer recovery pipe 85 is kept smooth, and clogging of fertilizer can be prevented.

Since the air switching shutter 86 pivots about the pivot shaft 86a which is oriented in the vertical direction, the resistance when the air switching shutter 86 is opened and closed does not fluctuate. Moreover, since the air switching shutter 86 is forcibly switched against the tension of the tension spring 97 during the fertilizer recovery, the airtightness of the air switching shutter 86 during the fertilizer recovery is good.

If the engagement between the opening / closing gear 93 and the semicircular gear 94 is preliminarily made flexible, even if there is some error in the assembly of the gears of each row, the operation timing of the discharge shutter 84 of each row can be improved. Displacement shutter 84 does not come out of order
Can be closed.

The feeding portion case 78 is divided into a lower fixed portion 78a and an upper detached portion 78b by a dividing surface FF which is inclined forward and downward in a side view. Feeding roll 73
A, 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 detached portion 78b. The upper opening to which the fertilizer hopper 60 is connected and the discharge opening 61a are not divided, so that the airtightness of both is kept good.

When the fertilizer hopper 60 is rotated to the rearmost position, the fertilizer hopper is located outside the area projected in the direction in which the detaching portion 78b is detached in a side view. Therefore, the detached portion 78b can be detached without difficulty. The extension destination of the dividing surface FF 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 separated in a side view. Therefore, with the detached portion 78b removed, the delivery rolls 73A,
Easy maintenance of 73B.

Next, the fertilizer application mechanism 27 will be described. The fertilizing power is taken out forward from the planted clutch case 25. The fertilizing power is transmitted to the feeding transmission case 101 via the ring cone type continuously variable transmission 100. The feeding transmission case 101 includes a first bevel gear mechanism 102 for changing the transmission direction to a forward direction, and a fertilizing clutch 103 for performing transmission on / off operation by a clutch pin 103a.
And a second bevel gear mechanism 104 for transmitting the rotation of the clutch shaft 103b in the front-rear direction to the feeding drive shaft 105 in the left-right direction.
And are provided. The fertilization power transmitted to the feeding drive shaft 105 is fed to the feeding drive shaft 1 via the fertilizer ridge clutch 106.
05 is transmitted to the cylindrical shaft 107 that is rotatably fitted on the outer peripheral shaft 05, and is further transmitted from the cylindrical shaft 107 to the payout shaft 75 via a pair of payout transmission gears 108. By adjusting the continuously variable transmission 100 to change the rotation speed of the feeding shaft 105, the fertilizer discharge amount of the feeding unit 61 is changed. In addition, the continuously variable transmission 1
If a position where the driving force is “0” is set in the ring cone of 00, fertilization can be stopped simply by operating the continuously variable transmission 100.

The cylindrical shafts 107, 107 of the first and second rows from the left are integrated, and are engaged and disengaged by a common fertilizer ridge clutch 106L. This fertilizer ridge clutch 10
The ridge clutch lever 110L for operating 6L is 2 from the left.
It is arranged between the feeding parts of the third row. Also, 3 from the left
The cylindrical shafts 107, 107 of the fourth row are also integrated, and the common fertilizer ridge clutch 106C is used for transmission / disconnection. The furrow clutch lever 110C for operating the fertilizer furrow clutch 106C is also arranged between the second and third feeding portions from the left. On the other hand, the cylindrical shafts 107, 1 of the fifth and sixth rows from the left
07 are independent of each other, and separate fertilizer furrow clutch 10
6R1 and 106R2 are adapted to be turned on and off respectively. Both fertilizer ridge clutches 106R1 and 106R2 are
It is operated by a common ridge clutch lever 110R arranged between the 5th and 6th feeding parts from the left.

FIG. 11 shows the operating mechanism of the ridge clutch lever for the first and second rows from the left. The operating portion of the ridge clutch lever for the third and fourth rows from the left is symmetrical with FIG. The fertilizer ridge clutch 106L shifter 111 is a shaft 112.
It is provided to be rotatable around. The end of the shifter 111 on the opposite side of the clutch operating part is a cam receiving part 111a. On the other hand, the ridge clutch lever 110L includes the rotary shaft 1
It is attached to a cam plate 114 that rotates together with the cam plate 13. A convex portion 114 a for operating the shifter is formed on one side surface of the cam plate 114, and the ridge clutch lever 1
When 10L is rotated, the convex portion 114a of the cam plate is
Pushes up the cam receiving portion 111 a, so that the shifter 111 moves against the shaft 112 against the tension of the compression spring 115.
The fertilizer ridge clutch 106L is turned around to be turned off.

FIG. 12 shows the operating portion of the ridge clutch lever for the fifth and sixth rows from the left. Fertilizer ridge clutch 106R
1, 106R2 (fertilizer application clutch 106R2 is not shown), the shifters 111, 111 are shafts 112, 11 respectively.
The two end portions of the shifters 111, which are opposite to the clutch operation portion, are connected to each other via a rod 116. An input arm 117 that rotates integrally with the fifth shifter 111 is provided, and a cam receiving portion 117a is formed at the tip of this input arm. Ridge clutch lever 110
R is attached to the cam plate 114 that rotates integrally with the rotating shaft 113, as in the first and second rows. When the ridge clutch lever 110R is rotated, the convex portion 114a of the cam plate pushes up the cam receiving portion 117a, so that the shifters 111, 111 rotate around the shafts 112, 112 against the tension of the compression springs 115, 115. Then, both fertilizer ridge clutches 106R1 and 106R2 are turned off.

Further, each ridge clutch lever 110L, 11
Wires 120 for connecting and disconnecting the drive of the seedling planting device 52 and the seedling feeding belt 51b in units of two rows are provided in 0C and 110R.
Are connected. This wire 120 is branched into two wires on the tip side, and the tip of one side 120a is connected to the shifter 121a of the planted ridge clutch 121 (see FIG. 14) and the other 120b.
Is connected to the driven roller shaft of the seedling feeding belt (see FIG. 15).

The seedling planting section 4 is attached by the planting transmission shaft 26.
Rotational power transmitted to the left and right planting drive shaft 123
Is transmitted to the seedling planting device 52 via the chain 124. A planted ridge clutch 121 is provided at a power transmission connecting portion of the planted drive shaft 123 and the chain 124. Fertilizer application clutches 106L, 106C, 106R1, 106R2 by operating the ridge clutch levers 110L, 110C, 110R.
When is set to "OFF", the planted ridge clutch 12 is linked with it.
1 also becomes "OFF", and the drive of the corresponding two-row seedling planting device 52 is stopped.

The seedling feeding belt 51b is wound around the driving roller 125 and the driven roller 126. The driven roller 126 can be moved in the perspective direction with respect to the driving roller 125. By bringing the driven roller 126 close to the driving roller 125, the seedling feeding belt 51 can be moved.
b is loosened and seedling feeding is stopped. Ridge clutch lever 1
By operating 10L, 110C and 110R, the fertilizer furrow clutches 106L, 106C, 106R1 and 106R2 are turned off.
Then, the corresponding two seedling feeding belts 51b are interlocked with it and the seedling feeding is stopped.

The planted clutch case 25 has an internal structure shown in FIG. Rotational power is transmitted from the input shaft 130 to the planted clutch shaft 131 via the inter-train speed change gears 132, ..., 133 ,. Drive side stock change gear 13
2, ... are independently rotatably fitted to the input shaft 130, and only one of them is integrated with the input shaft 130 via a shifter key 134. On the other hand, the driven stock-side speed change gears 133, ... Are integrally formed with each other, and are connected to the planting clutch shaft 131 via a planting clutch 135 operated by a clutch pin 135a so that they can be transmitted and received freely. When the shifter key 134 is slid with the shift rod 134a, the effective combination of the stock change gears 132 and 133 is changed. Thereby, the transmission ratio from the input shaft 130 to the planted clutch shaft 131 can be adjusted in four stages.

The fertilizer application clutch shaft 1 is coaxial with the setting shaft 130.
37 is provided. Then, the planted clutch shaft 131
From fertilizer clutch shaft 137 to a pair of eccentric gears 138, 1
It is transmitted by 39. The fertilization clutch shaft 137 is provided with a fertilization clutch 140 operated by a clutch pin 140a, and is transmitted from the fertilization clutch 140 to the fertilization output shaft 143 via a pair of bevel gears 141 and 142. Further, part of the rotational power of the fertilizer application clutch shaft 137 is
Through the pair of constant velocity gears 145, 146, the planted output shaft 14
It is transmitted to 7. The eccentric gears 138, 139 and the constant-velocity gears 145, 146 are used as the inter-stock transmission gears 132, ..., 133 ,.
By arranging them together in the same row, the planted clutch case 25 can be made compact.

The eccentric gears 138 and 139 are used for the seedling planting fixture 52.
The fastest seedling planting tool 5 near the bottom dead center of the movement trajectory T drawn by a.
2a are operatively combined. Thereby, the planting trace formed by dragging the seedling planting tool 52a in the soil is made as small as possible, and the seedling take-out port 51a is formed.
The lateral movement speed of the seedling mounting table 51 when taking out the seedlings from the plant is slowed. In addition, since the seedling planting unit 4 and the fertilizer application device 5 are driven by the power that has been changed between the plants, fertilization can be properly performed between the plants.

The fertilizer application main body described above is supported by the fertilizer frame 70 fixed to the left and right main frames 15, 15. Specifically, on the fertilizer application frame 70, the feeding portions 61, ...
The fertilizer hopper 60 is attached at 51, and as described above, the fertilizer hopper 60 is rotatably supported rearward by the two left and right rotary arms 71 attached to the fertilizer application frame 70. The feeding section 61 can be divided into upper and lower parts, but in some cases, the bolt 151 can be removed to integrally remove the feeding section 61. The air chamber 6 is provided before and after the fertilization frame 70.
8 and a fertilizer recovery pipe 85 are provided, which serve as a frame and contribute to the improvement of the overall strength. The feeding section 6 is a transmission path that passes behind the fertilizer recovery pipe 85 in a side view.
With the configuration in which 1 is transmitted, it is possible to bring the feeding section 61, ... And the fertilizer recovery pipe 85 close to each other, which is useful for improving the support strength of the feeding section.

On the other hand, the fertilizer supply work to the fertilizer hopper 60, the fertilizer collection work from the fertilizer recovery port 87, the maintenance of the main body of the fertilizer application device, each ridge clutch lever 110L, 1
The operations such as 10C and 110R are performed with the rear cover 30 opened around the rear rotation support shaft 30a. At this time, since the floor step 35 covering the machine body and the rear cover 30 are divided on the front side of the main body of the fertilizer application device 5, the rear cover 30 can be pivoted largely around the rear pivot shaft 30a. The open space of the rear cover 30 is large, and
Since the upper part of the main body of the fertilizer application device 5 is opened by the rotation of the rear cover 30, fertilizer supply work, fertilizer recovery work, maintenance of the main body of the fertilizer application device, each ridge clutch lever 110.
Work such as operation of L, 110C, 110R can be performed easily and efficiently, and workability is very good.

In the above embodiment, the ridge clutch levers 110L, 110C and 110R are provided on the main body of the fertilizer application device in the rear cover 30, but the rear cover 3
If it is provided near the seat 31 on the outside of 0, the rear cover 3
Each ridge clutch lever 110L, 110 without opening 0
C and 110R can be operated and workability is good.

Finally, the right and left front wheel mudguard covers 160, 160 are provided below the floor step 35 and the rear cover 30 above the rear portions of the left and right front wheels 10, 10 to provide the left and right rear wheels 1.
Left and right rear wheel mudguard covers 161 and 161 are provided above the front portions of the rear side cover 30 above the front portions of the fertilizers 11 and 11 to prevent the soil from being splashed up from the front and rear wheels 10 and 11 on the fertilizer application main body portion.

Next, a riding type rice transplanter equipped with a fertilizer application apparatus for applying paste fertilizer (or liquid fertilizer) will be described with reference to FIGS. 16 to 21.
In this example, a side-row fertilizer applicator 205 for fertilizing paste fertilizer (or liquid fertilizer) instead of the above-mentioned granular fertilizer is mounted.

The side-row fertilizer applicator 205 stores side-row fertilizer tanks 250, 250 for storing fluid fertilizers, a pump 251 forcibly feeding the fluid fertilizer, and fertilizer discharged from the pump 251 for side-row fertilizer application for each row. Nozzle 252 ... A valve unit 253 that switches between a state of flowing to the side and a state of returning to the side-row fertilizer tank 250, and a side-row fertilization pipe 254 sent from the valve unit 253 to the side-row fertilizer nozzle 252 of each row.
And a side-row fertilizer nozzle 252, whose tip mouth digs into the soil to release fertilizer, ...
The supply of fertilizer from 50 to the pump 251 is the supply pipe 25.
5, the fertilizer is transferred from the pump 251 to the valve unit 253 by six connecting pipes 256 ...

The lateral strip fertilizer tanks 250, 250 are in the shape of a vertically long box and are arranged in the space below the rear cover 30 on both the left and right sides of the seat 31.
5 and 15 are attached in a posture in which the longitudinal direction of the lateral strip fertilizer tank is oriented in the front-rear direction. In addition, side row fertilizer tank 250
A fertilizer replenishing port for replenishing fertilizer is opened on the upper surface of 250 and is closed by lids 250a and 250a.

Furthermore, the left and right lateral strip fertilizer tanks 250 and 25
In No. 0, the liquid fertilizer is taken out from the lower side by the supply pipe 255 having a large diameter, and the left and right side fertilizer tanks 250, 250 in the supply pipe 255 are also provided.
Backflow stop valve 2 with its upper part pivoted at the lower position of
55a and 255a are provided. Therefore, when the traveling vehicle body 2 is in a substantially horizontal position, the left and right fertilizer tanks 25
The fluid fertilizer is taken out by the pump 251 from 0.250. Further, when the traveling vehicle body 2 is greatly inclined in the left-right direction, the backflow blocking valve 255a on the lower side is closed, so that the fluid fertilizer in the upper side-row fertilizer tank 250 is stored in the lower side-row fertilizer tank 250. It is possible to prevent the fluid fertilizer from flowing into the pump 251 and being prevented from being taken out,
Even if the fertilizer in the left-right-side fertilizer tank 250 is low, the fertilizer can be taken out well regardless of the inclination of the traveling vehicle body 2.

Further, the pump supply pipe portion 255b is branched from the middle of the supply pipe 255, and the fertilizer is supplied to the pump 251. The pump 251 is composed of a sub tank 251a, each fertilizer discharge part 251b, and a gear transmission part 251c for driving it. To supply fertilizer to the sub tank 251a, the pump supply pipe portion 255b of the supply pipe 255 is connected to the sub tank fertilizer supply port 251d.
Fertilizer is supplied to the sub-tank fertilizer supply port 251d from the lateral strip fertilizer tanks 250 and 250 through the supply pipe 255 and the pump supply pipe portion 255b.
It is supplied into the sub tank 251a via the drain valve 251e. In addition, when the drain valve 251e is switched and the fertilizer discharge port 251f is opened, the side strip fertilizer tank 250.2.
The fertilizer in 50, the supply pipe 255, and the sub tank 251a can be discharged. In this case, fertilizer outlet 2
The base of the bellows-like bendable drain pipe 251g is attached to 51f, and the side strip fertilizer tanks 250/250
Further, the fertilizer receiver T is placed at a position lower than the sub tank 251a, and the drain pipe 251g is brought to and discharged there. When not in use, the drain pipe 251g is held in an upright posture by a holder provided on the left side row fertilizer tank 250. Each line fertilizer discharge part 251
In the sub-tank 251a, b is inside the rotor pipe 251h, which projects rearward from the rear side of the sub-tank 251a by the same number as the number of side-row fertilizers, and the rotor 251i having a spiral groove formed on the outer periphery thereof is driven to rotate. Fertilizer is being discharged. Each axis of the rotor 251i ...
The gear transmission portion 251c is driven by gears that mesh with each other and work together.

For the transmission to the pump 251, the fertilizer application power is taken out from the planted clutch case 25 in the forward direction, inserted into the side bevel case 260, and passed through the speed change transmission mechanism provided in the side bevel case 260. Output shaft 261
The transmission is transmitted to the sprocket of the input shaft 251j of the gear transmission 251c of the pump 251 via the sprocket 262 and the chain 263. The speed change operation of the speed change transmission mechanism in the lateral bevel case 260 is operated by the speed change lever 264 provided on the upper part of the device, and the speed change operation changes the fertilizer discharge amount of the pump 251 in multiple stages.

The fertilizer projecting from the rotor pipes 251h of the strip fertilizer discharger 251b is connected to the connecting pipes 256 ...
To the valve unit 253. In the valve unit 253, a switching valve 253a is provided for each line, and the fertilizer flows through the side line fertilization pipe 254 of each line to the side line fertilization nozzle 252 and the left side of the return pipe 253d. Side row fertilizer tank 25
It is possible to switch to the state of returning to 0. The switching operation is performed by a valve switching lever 253b provided on each of the switching valves 253a. When the valve switching lever 253b is tilted to be in a substantially horizontal posture, the side strip fertilizing nozzle 252 is in a side strip fertilizing state to release fertilizer, and when the valve switching lever 253b is raised to a substantially upright posture, the side strip is fertilized. The side-line fertilizer stop state in which the release of fertilizer from the fertilizer application nozzles 252 is stopped, and this switching operation can be independently operated by each valve switching lever 253b. The fertilizer that has flowed to the side-row fertilization pipe 254 ... Via the switching valves 253a ...
Is discharged from the tip end port of the side-row fertilizer application nozzle 252 connected to.

That is, the side-row fertilizer nozzles 252, which are the fertilizer-applying portions of each row of the side-row fertilizer application device 205, are attached to the left and right side portions of the center float 55 and the side floats 56, 56. 252 ... Fluid fertilizer such as paste or liquid is discharged into the soil from the rear end opening,
The position in the left-right direction is provided near the left and right sides of the seedling planting position of each row.

The pump 251 and the valve unit 25
3 is the left and right side fertilizer tanks 25 below the rear cover 30.
Placed between 0 and 250, left and right mainframe 1
It is attached to 5,15. In the figure, 265 is a fertilizer clogging lamp, 266 is an alarm buzzer, and the switching valve 2
A detection tool for detecting the internal pressure in the connecting pipes 256 ... Immediately before reaching 53a ... is provided in the unit case 253e, and when the detection tool detects that the internal pressure in the connection pipes 256 ... The control device controls the alarm lamp 265 for clogging the fertilizer and sounds the alarm buzzer 266. Further, when the amount of fertilizer in the lateral strip fertilizer tanks 250/250 is below a set amount, a fertilizer depletion sensor is provided, and when the sensor detects a decrease in fertilizer in the lateral strip fertilizer tanks 250/250, The fertilizer runout warning lamp 267 is turned on by the control device in the control unit and the warning buzzer 266 is activated.
It sounds like. Furthermore, the unit case 25
In 3e, there is provided a switch for detecting that one of the valve switching levers 253b ... Is raised upward to be in a substantially upright posture and is operated to the side-row fertilization stop state, and this switch is operated to the side-row fertilizer stop state. Each row-side row fertilization stop display lamp 268, which is turned on when is detected, is turned on.

Conventionally, the left and right lateral fertilizer tanks were provided at the front of the machine or on the rear cover behind the seat.
As described above, when the left and right lateral fertilizer tanks 250 are arranged on the left and right sides of the seat 31 below the rear cover 30, the center of gravity is lowered and the running stability of the machine body is improved. Of course, even if the fertilizer in the left and right lateral strip fertilizer tanks 250 and 250 increases or decreases, the left and right lateral strip fertilizer tanks 250 and 250 are arranged at a lower position of the vehicle body between the front and rear wheels 10 and 11 in a side view of the vehicle body. Therefore, the movement of the center of gravity in the front-rear direction of the machine body is small, the change in the front-rear balance of the machine body is small, the stability is good, the traveling performance is good, and the fertilizing work and the planting work can be performed well.
(In addition, when the side strip fertilizer tank is installed in the front part of the machine,
The forward visibility is poor, and the change in the center of gravity in the longitudinal direction of the aircraft due to the increase / decrease of fertilizer in the lateral fertilizer tank causes a large fluctuation in the longitudinal balance of the aircraft and poor running stability. On the other hand, when the side-row fertilizer tank is provided on the rear cover behind the seat, the workability for the rear working machine such as the work for supplying the seedling to the rear seedling mounting table is poor. In addition, since the lateral fertilizer tank is located at a high position of the machine body, the center of gravity of the machine is high and there is a problem in traveling stability. The above-described embodiment solves such a conventional problem. )

[Brief description of drawings]

FIG. 1 is a side view of a riding type rice transplanter equipped with a fertilizer application device.

FIG. 2 is a plan view of a riding-type rice transplanter with a fertilizer application device.

FIG. 3 is a rear view of the fertilizer application device.

FIG. 4 is a plan view of the fertilizer application device.

FIG. 5 is a side sectional view of one section of the fertilizer application device.

FIG. 6 is a side sectional view of a section of the fertilizer application device different from that in FIG.

FIG. 7 is a side cross-sectional view of a powder / granule feeding portion.

8 is a sectional view taken along line S-S in FIG.

FIG. 9 is a side view of a fertilizer recovery lever and its related members.

FIG. 10 is a cross-sectional view of a feeding transmission case.

11 (a) is a plan view and FIG. 11 (b) is a side view of an operating mechanism for the first and second ridge clutch levers from the left.

12 (a) is a front view and FIG. 12 (b) is a side view of the operating mechanism of the ridge clutch lever for the fifth and sixth rows from the left.

FIG. 13 is a cross-sectional view of a planted clutch case.

FIG. 14 is a transmission mechanism diagram of a seedling planting section.

FIG. 15 is a plan view of a seedling feeding belt.

FIG. 16 is a side view of a riding type rice transplanter with a fertilizer application, showing another example.

FIG. 17 is a plan view of a riding-type rice transplanter with a fertilizer application, showing another example.

FIG. 18 is an operation explanatory view showing the configuration of a lateral strip fertilizer application showing another example.

FIG. 19 is an enlarged front view of an essential part showing the configuration of a lateral strip fertilizer tank of a lateral strip fertilizer application showing another example.

FIG. 20 is an enlarged front view of the main parts showing the operation of the lateral strip fertilizer tank of the lateral strip fertilizer application showing another example.

FIG. 21 is an enlarged front view of the main parts showing the operation of the lateral strip fertilizer tank of the lateral strip fertilizer application showing another example.

[Explanation of symbols]

1 Riding type rice transplanter with fertilizer application 2 running car 3 Lifting link device 4 Seedling planting department 5 Fertilizer 10 front wheels 11 rear wheels 30 cover (rear cover) 30a Rotating support shaft 31 seats 35 cover (floor step) 60 fertilizer hopper 61 Feeding part 62 Fertilizer hose

Claims (2)

[Claims] 1. A riding type seedling planter with a fertilizer application in which a seedling planting section 4 and a fertilizer application device 5 are mounted on a traveling vehicle body 2 equipped with front wheels 10 and rear wheels 11 at the lower part of the machine body, and a cover 30 for covering the airframe.
The front wheel 10 and the rear wheel 1 below 35 and in a side view of the aircraft
At least the fertilizer hopper 60 and the feeding portion 61 of the fertilizer application device 5 are provided in the space formed by 1 and the covers 30 and 35 are divided into at least two portions at the front positions of the fertilizer hopper 60 and the feeding portion 61. Riding type seedling planting machine with fertilizer application. 2. A cover 30 which is at least divided into front and rear parts.
The cover 30 located above the fertilizer hopper 60 and the feeding part 61 among the 35 is configured so that the front part thereof can be rotated upward around a rotation support shaft 30a provided in the rear part. The riding type seedling planting machine with the fertilizer application described in.