JPH0819309A - Seedling transplant / direct seeding machine - Google Patents

Abstract

(57) [Summary] [Purpose] A highly versatile combined seedling transplanter / planter that can be used both as a seedling transplanter for planting seedlings on the surface of the field or as a direct seeder for direct seeding on the surface of the field. I will provide a. [Structure] A planting device for planting a plurality of rows of seedlings on the topsoil of the field is provided such that the intervals between the planting rows are equidistant, and a plurality of rows of grains such as seeds and fertilizer are supplied to the topsoil of the field. The supply device was provided so that the supply intervals were the same pitch as the intervals between the planting lines, and the supply lines were located near the sides of the planting lines formed by the planting device.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combined seedling transplanting / direct seeding machine which can be used as a seedling transplanter for planting seedlings in the field soil or a direct seeder for direct seeding in the field soil. Is.

[0002]

2. Description of the Related Art In addition to planting seedlings in the topsoil of a field,
A fertilizer rice transplanter for multi-row planting, in which fertilizer is applied near the side of the seedling planting row, is widely used. In this type of fertilized rice planting machine, the row of seedlings to be planted was set to have an equal pitch, but the row of fertilized fertilizer was not necessarily equal pitch. This is due to the positional relationship with the ground leveling float. For example, as shown in FIG. 20, most of the six-row fertilizer rice transplanters are provided with one center float 75 and a pair of left and right side floats 75, 75 as the ground leveling float, and each float 75, 76, A planting position P, ... And a fertilization position Q ,.
However, the fertilizer application positions Q, ... Are floats 75, 76, 76.
Between the planting positions P, ..., and thus the spacing between the planting positions P, ... Is set to an equal pitch p, the fertilization position Q sandwiching the float and the spacings q ₁ , q ₃ , q between the fertilization positions Q. ₅ is narrow and the fertilizer application position Q without the float being sandwiched between the fertilizer application position Q
₂ and q ₄ were getting wider.

Conventionally, in the case of direct seeding rice in which seeds are directly sown on the surface soil of a field, a sowing work machine is attached to a tractor to perform sowing work. However, it is uneconomical to separately prepare a sowing work machine just for that purpose. Therefore, there is an idea to use the fertilizer applicator of the fertilizer applicator as a seeding device for direct sowing. However, as described above, the conventional fertilized rice transplanter cannot be used as a direct seeding machine because the fertilized rows are not arranged at equal pitches.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention is a seedling transplanter for planting seedlings on the soil surface of a field by improving the conventional fertilizer transplanter, or a direct seeder for direct seeding on the soil surface of the field. The purpose of the present invention is to provide a highly versatile combined seedling transplanting / direct seeding machine that can be used also as a plant.

[0005]

In order to solve the above-mentioned problems, the present invention has the following constitution. That is, the combined seedling transplanting and direct-seeding machine according to the present invention is a planting device for planting a plurality of seedlings in the field soil portion so that the spacing between the planting rows is at an equal pitch, and seeds and fertilizers are used in the field soil portion. The granular material supply device for supplying a plurality of granular articles such as the above, the intervals between the supplying threads are the same pitch as the intervals between the implanting threads, and the supplying threads are in the vicinity of the side of the implanting thread by the implanting apparatus. It is characterized by being provided so as to be located.

[0006]

When the planting device is driven to plant seedlings on the surface soil of the field, it can be used as a seedling transplanter. At that time, if the fertilizer is supplied to the surface soil surface of the field by the granular material supply device, it becomes a side-row fertilized seedling transplanter. Further, by stopping the driving of the planting device and supplying the seeds to the surface soil surface of the field by the granular material supply device, it is possible to use it as a direct seeder with an equal pitch between the sowing lines.

[0007]

EXAMPLE One example shown in FIGS. 1 to 17 will be described below. This combined seedling transplanting / direct seeding machine comprises a traveling vehicle 1 equipped with a planting work machine 70 and a granular material supply device 80.
Further, the vehicle body 1 of this combined seedling transplanting / direct sowing machine can be adjusted in vehicle height, and can be used for intermediate management work by increasing the vehicle height and replacing the planting work machine 70 with another work machine. it can.

The traveling vehicle body 1 is a four-wheel drive vehicle and is provided with a pair of left and right front wheels 2, 2 and rear wheels 3, 3 which are drive wheels. Front axle cases 6 and 6 are extended to the left and right from the left and right side surfaces of a mission case 5 arranged in the front part of the machine body, and vertical axis cases 7 and 7 are fixedly provided at the tip end thereof, and further lower ends thereof are provided. Front wheel final case 8,8
Is rotatably provided around the rotation center shafts 8a, 8a, and the front wheels 2, 2 are attached to the front wheel axles 2a, 2a protruding outward from the outer side portions of the front wheel final cases 8, 8. The vertical case 7 is an upper case 7U on the front axle case side and a lower case 7 on the front wheel final case side.
L and the lower case 7L with respect to the upper case 7U
Can be turned.

The front wheel axle 2a is eccentric from the rotation center shaft 8a, and the front wheel final case 8 surrounds the rotation center shaft 8a.
The vertical position of the front wheel 2 with respect to the machine body can be adjusted by rotating the. The rotation range of the front wheel final case 8 is a range .theta. About the front half of the circumference regulated by a pair of stoppers S1 and S2 fixed to the outer surface of the front wheel final case 8 and a stopper receiver 9 fixed to the lower case 7L. Has become. As shown in FIG. 3, when the stopper S1 is engaged with the engaging portion 9a of the stopper receiver 9, the front wheel 2 is raised to the front wheel raising position FW1 (h ₁ ) with respect to the machine body, and as shown in FIG. When the stopper S2 is engaged with the engaging portion 9b of the stopper receiver 9, the front wheel lower position FW2 (h ₂ ) is obtained in which the front wheel 2 is lowered with respect to the machine body. The method of adjusting the front wheels up and down will be described later.

The front wheel raising position FW1 is the top dead center Z1 of the circumference when the front wheel final case 8 is rotated upward.
It is set slightly closer to the front, and the front wheel lowering position F
W2 is set at a position slightly beyond the bottom dead center Z2 of the circumference when the front wheel final case 8 is rotated downward. This is because when the front wheels are in the front wheel raising position FW1 or the front wheel lowering position FW2, a force against the weight of the machine body is required to rotate the front wheel final case 8 to the rotatable side, so that the respective positions FW1 and FW2 are required. This is because the front wheel 2 is stable.

By the way, below the vertical axis case 7, the vertical axis 7
Bevel gears 100, 1 transmitted from a to the rotation center shaft 8a
Since 01 is built in, the lower portion of the vertical axis case 7 projects to the inside of the front wheel 2. In particular, the overhang of the portion including the bevel gear 100 is large. When seedlings are transplanted at a low vehicle height and the mud is deep in the paddy fields, the part that overhangs inside goes underneath the mud and creates a wide groove on the mud surface. The problem arises.

Therefore, in the rice transplanter in which the bevel gear 101, which is transmitted from the vertical axis 7a to the rotation center axis 8a, is located below the front wheel axle 2a, the bevel gear 101 is pushed inside the vertical axis case 7 and inward by the vertical axis case. The vertical axis Case 7
A guide plate 102 that guides to the rear side is provided to fill back the groove formed by the vertical axis case 7. The guide plate 102 has a plane cross section in an arc shape along the outer periphery of the vertical axis case 7, and is attached with its lower end substantially at the same height as the front wheel axle 2a. When the mud surface 103 is higher than the lower end of the guide plate 102, the mud extruded inward by the vertical axis case 7 rises between the vertical case 7 and the guide plate 102, and the raised mud X (FIG. 4).
Is not further moved inward by the guide plate 102, but is guided by the guide plate 102 and guided to the rear side of the vertical axis case 7 as indicated by the arrow in FIG.

As shown in FIGS. 18 and 19, the vertical axis case 7
It is also effective to narrow the width of the groove formed by the vertical axis case 7 by making the inner side of the vertical surface flat and narrowing the width of the vertical axis case 7 in a front view.

In addition, in order to prevent the front wheels 2 from stepping on the cultivated crops during the management work while raising the vehicle height, as shown in FIG. The tool 104 is attached. The weeding tool 104 is rotatably loosely fitted to the boss 8b of the front wheel final case 8 and attached to the pin hole 104a of the weeding tool 104 and the pin hole 8c of the front wheel final case 8 (shown in FIG. 3). The fixing pin 105 is inserted and fixed to the front wheel final case 8 (shown by a solid line in FIG. 6).

When the fixing pin 105 is slid so as to pass through the pin hole 104a of the weeding tool 104 and the pin hole 106a formed in the wheel disc 106 of the front wheel 2, the weeding tool 104 is moved relative to the front wheel final case 8. It is rotatable and operates integrally with the front wheel 2. Weeding tool 1
The rotation range of 04 is restricted by the stoppers S1 and S3. In that state, the front wheel 2 is driven in the forward direction, and is rotated around the boss 8b until the weeding tool 104 comes to the lower side of the front wheel 2, so that the weeding tool 104 supports the machine body and the front wheel 2 moves from the ground. It is lifted (indicated by a chain line in FIG. 6). That is, the weeding tool 104 serves as a jack. Therefore, the front wheel for rice planting work and the front wheel for management work can be exchanged without using a jack.

The front ends of a pair of left and right main frames 10, 10 are fixed to the rear surface of the mission case 5, and the horizontal frame 1 is attached to the rear ends of the main frames 10, 10.
1 is fixed. Then, the rear wheel rolling shaft 12 whose axis is oriented in the front-rear horizontal direction is fixedly fitted to the left and right central portions of the horizontal frame 11, and the rear wheel frame 13 is rotatably supported by the protruding portion of the rear wheel rolling shaft. ing. The rear wheel frame 13 has a U-shape in a plan view in which both left and right ends project rearward, and the rear projections 13a, 13a swing on a rear end outer surface within a predetermined range in which the front end faces forward and downward. As described above, the rear wheel final cases 16 and 16 are swingably provided, and the rear wheels 3 and 3 are attached to the rear wheel axles 3a and 3a protruding outward from the outer surface of the front end portion of the rear wheel final case.
Is attached.

A lateral bar 18 is rotatably held by lateral bar holders 17, 17, 17 at a position diagonally below the front side of the rear wheel frame 13, and a bracket 19 fixed to the rear wheel frame 13 pivots the main body side. An arm 21 in which the piston side of the mounted rear wheel lifting cylinder 20 is projected upward from the horizontal bar 18.
And the arms 22, 22 projecting upward from the left and right ends of the horizontal bar 18 and the arms 23, 2 projecting upward from the base of the rear wheel final case 16, 16.
3 and 3 are connected by connecting links 24, 24. When the rear wheel lifting cylinder 20 is expanded and contracted, the rear wheel final cases 16 and 16 rotate within a predetermined range, and the rear wheels 3 and 3 move up and down with respect to the machine body. Since the turning range is on the front side and below the turning fulcrum of the rear wheels 3 and 3, when the rear wheel raising position RW1 (see FIG. 1) is set, the rear wheels 3 and 3 are positioned in front and the rear wheel is lowered. When in the position RW2 (see FIG. 17), the rear wheels 3 and 3 are located rearward.

The engine 30 includes mainframes 10 and 10.
Is provided above. The rotational power of the engine 30 is transmitted to the HST 32 via the first belt transmission device 31 and is transmitted to the generator 34 via the second belt transmission device 33. Further, the rotational power after shifting by the HST 32 is transmitted to the mission case 5 via the third belt transmission device 36 having a continuously variable transmission mechanism, and the hydraulic pump 3 via the fourth belt transmission device 37.
Passed to 8,39.

The transmission side pulley 36a of the third belt transmission 36 and the transmission portion of the transmission input shaft 5a are constructed as a main clutch A. The rotary power input to the transmission case 5 via the main clutch A is shifted by the main transmission B and then divided into traveling power and working machine power.

The driving power is passed through the front differential device C to the left and right front axles 6a, 6a and the vertical axes 7a, 7a.
a, the rotation center shafts 8a, 8a, the front wheel axles 2a, 2a, are transmitted in this order, and the left and right rear differential shafts 5b, 5b, the rear wheel output shafts 5c, 5c, and the rear wheel transmission shaft 40 are transmitted via the rear differential device D. , 40, rear wheel input shafts 15a, 15a, rear wheel rotation center shafts 16a, 16a, rear wheel final shafts 16b, 16
b, the rear wheel axles 3a, 3a are transmitted in this order. The differential devices C and D have a differential lock mechanism C that stops the differential function.
a and Da. These diff lock mechanisms Ca and Da are composed of a front wheel diff lock lever 54C and a rear wheel diff lock lever 5.
Operate each in 4D.

Further, the rear wheel brake pedal 55 is provided in the transmission portion from the rear differential shafts 5b, 5b to the rear wheel output shafts 5c, 5c.
Side clutches and brakes E, E operated by E, 55E are provided (see FIG. 14). In FIG. 14, g1 is a bevel gear attached to the rear differential shaft 5b, g1
A bevel gear 2 is rotatably fitted to the rear wheel output shaft 5c. The side clutch 41 is a multi-plate clutch, and includes drive plates 41b of the outer cylinder 41a, which are spline-fitted to the bevel gear g2, and an inner cylinder 4 integrally provided on the rear wheel output shaft 5c.
The passive plates 41d, ... Of 1c are opposed to each other, and the slider 41f is pressed against the outer cylindrical body 41a by the ring-shaped plate springs 41e ,. The clutch is engaged. The shifter 41g is operated to operate the slider 41f to move the outer cylinder 41a.
When the pressing is released, the drive plates 41b, ...
1d, ... are separated and the clutch is disengaged.

The brake 42 presses the shoes 42b, ... On the drums 42a, ... Attached to the rear wheel output shaft 5c to brake the rotation of the rear wheel output shaft 5c. When operating the shifter 41g to the clutch disengagement side,
The slider 41f presses the disc 42c to press the shoe 42
.. presses the drums 42a, .., so that the rear wheels 3 are braked in conjunction with the side clutch disengagement operation.

The rear wheel transmission shafts 40, 40 are connected to the rear wheel output shafts 5c, 5c and the rear wheel input shafts 15a, 15a through universal joints 43, 43, ... And the rear wheel input shafts 15a, 15a extend and contract. Since it is freely configured,
By the rolling of the rear wheels 3 and 3, the rear wheel output shafts 5c and 5c
Even if the positional relationship or the distance between the rear wheel input shafts 15a, 15a changes, it is possible to cope with it.

Further, the power for the working machine is transmitted to the planting clutch 46 for transmitting to the planting working machine, the fertilizer applicator, etc. via the working machine transmission shaft 45 after shifting the speed by the stock transmission device F.

The control seat 50 is installed on an engine cover 51 that covers the upper side of the engine 30. A steering handle 53 is provided above the front cover 52 in front of the steering seat 50. Also, the front cover 5
2 and around the control seat 50, various levers 54,
..., various pedals 55, etc. are provided. Around the lower portions of the engine cover 51 and the front cover 52, there is a horizontal floor step 57 on which the operator can walk or the like.

The working machine mounting link for mounting the planting working machine 70 has a parallel link structure and one upper link 60.
And a pair of left and right lower links 61, 61. These links 60, 61, 61 are rotatably attached at their bases to a link base frame 62 erected at the rear ends of the main frames 10, 10, and the traveling vehicle body-side hitch 63 is connected to their tip ends. There is. Mainframe 10,
A working machine elevating cylinder 65 is interposed between a support member 65a fixed to 10 and a tip end of a swing arm 64 formed integrally with the upper link 60. By expanding and contracting the cylinder, the upper link 60 moves up and down. Turn to
The work machine attached to the hitch 63 on the traveling vehicle body moves up and down while maintaining a substantially constant posture. The work implement lifting cylinder 65 is a single-acting cylinder that is hydraulically operated only on the work implement raising side (cylinder extension). When lowering the work implement, an oil passage is opened so that the oil in the cylinder returns to the tank, and the work is performed. Lower the work machine by the weight of the machine.

The traveling vehicle-side hitch 63 has an upper engaging member 63a and lower engaging members 63b, 63 at its upper end and rear surface.
b is fixed, the engaging pins 71a, 71b, 71b of the working machine side hitch 71 are engaged with these engaging members respectively, and the lower side is fixed by the fixing hooks 63d, 63d operated by the attaching / detaching levers 63c, 63c. Engaging members 63b, 63
The engaging pins 71b, 71b engaged with b are fixed so as not to deviate rearward.

The hydraulic circuit is assembled as shown in FIG.
That is, two hydraulic pumps 38, 39 are provided, one hydraulic pump 38 sends oil to the rear wheel lifting cylinder 20 and the working machine lifting cylinder 65, and the other hydraulic pump 39 is a torque generator for power steering (not shown). )
Send oil to. The oil sent from the hydraulic pump 38 is sent to the rear wheel lift cylinder 20 via the rear wheel lift control valve V ₂ by the shunt valve V ₁ and the work machine lift cylinder via the work machine lift control valve V _3. It is distributed to the circuit HC2 to be sent to 65 at an appropriate ratio (for example, 3: 7). When the rear wheel lifting control valve V ₃ is neutral, the oil in the circuit HC1 joins the circuit HC2 via the pilot valve V ₄ , and the entire flow rate is sent to the working machine lifting cylinder 65.
When the rear wheel lift control valve V ₂ is operated to raise or lower the vehicle height, a pilot valve operating pressure corresponding to the pressure loss of the throttle valve V ₅ is generated in the pilot circuit HC3 or the pilot circuit HC4, and the shuttle valve V ₆ is used. As a result, the pilot valve V ₄ is switched by the pilot valve operating pressure, and oil does not flow from the circuit HC1 to the circuit HC2.

By constructing the hydraulic circuit in this way, it is possible to operate the two hydraulic cylinders 20, 65 with one pump 38, and when one hydraulic cylinder (rear wheel lifting cylinder) 20 is not operated, It becomes possible to supply the total flow rate of the oil sent from the pump 38 to the other hydraulic cylinder (working machine lifting cylinder) 65. Therefore, the pump 38 can be downsized, and the power for driving the pump 38 can be reduced.

The traveling vehicle body 1 is constructed as described above, and the vehicle height is adjusted by raising or lowering the vehicle body of the front wheels 2, 2 and the rear wheels 3, 3 according to the purpose of work.

The front wheel is moved from the raised position FW1 to the lowered position FW2.
In order to change the setting, the transmission is put in reverse and the left and right rear wheel brake pedals 55E and 55E are depressed. Then, at the same time as the side clutches 41, 41 are disengaged, the rear wheel brake 4
2, 42 are applied, and the rotation of the rear wheels 3, 3 is stopped. On the other hand, since the front wheels 2, 2 are still rotating, the front wheels 2, 2
Tries to roll on the ground. Since the frictional resistance between the rear wheels 3 and 3 and the ground is greater than the propulsive force from the front wheels 2 and 2,
The vehicle body cannot move, and as a result, the front wheel final cases 8 and 8 rotate about the rotation center shafts 8a and 8a in the direction opposite to the rotational driving direction of the front wheels, and the front wheels 2 and 2 are in the raised position. Move from FW1 to lowered position FW2.

On the contrary, when the front wheel is moved from the lowered position FW2 to the raised position FW1, the transmission is advanced and the rear wheel brake pedals 55E and 55E are depressed. Then, the front wheel final cases 8 and 8 rotate in the direction opposite to the direction in which the front wheels are lowered, and the front wheels 2 and 2 ascend with respect to the machine body.

If the front differential device C is locked when the front wheel final case is rotated, the left and right front wheel final cases 8 are uniformly rotated, so that the front wheel vertical adjustment is stably performed. .

For rear wheel side vehicle height adjustment, the rear wheel lifting cylinder 20 is expanded and contracted to adjust the rear wheels 3 and 3 to the rear wheel raising position RW1 and the rear wheel lowering position RW2.

The traveling vehicle side hitch 63 is provided with a regulation switch SW for regulating rear wheel side vehicle height adjustment. This regulation switch SW is provided with work implement mounting links 60, 61, 6
When the planting work machine 70 is attached to the plant 1, the switch pushing plate 110 provided in the planting work machine is pushed to switch on, thereby operating the rear wheel lifting control valve V ₂ to the neutral position. It is designed to let you. Therefore, in the state in which the planting work machine 70 is mounted, the traveling vehicle body 1
The rear wheel side vehicle height adjustment became impossible, and the planting work machine 7
Prevent the accident that the rear wheels 3,3 are accidentally lowered with the 0 attached, and the rear wheels 3,3 moved to the rear and the planting work machine 70 come into contact with each other to damage the planting work machine 7. There is. By providing this regulation switch SW, it becomes possible to mount the planting work machine 70 at a position closer to the front, and the weight balance when used as a seedling transplanter or a direct seeder is improved. When a work implement for management work is attached to the work implement attachment links 60, 61, 61, the rear wheels and the work implement do not come into contact with each other even if the rear wheels 3, 3 are lowered. The machine is not provided with a switch push plate 110.

When used as a seedling transplanter or a direct seeder, as shown in FIG. 1, the vehicle height of the traveling vehicle body 1 is lowered, and the work implement attachment links 60, 61, 61 are attached with the planting work implement 70. To do. The mounting is performed as follows. First, the traveling vehicle body 1 is backed to the planted work machine 70 held at a predetermined height with the work machine mounting links 60, 61, 61 lowered, and the two are approached to a position where an appropriate distance is provided between them. Then, the work implement mounting links 60, 61, 61 are raised to raise the traveling body side hitch 63, and the engagement pins 71a, 71b, 71b of the working implement side hitch 71 are attached to the traveling body side hitch 6.
The three engaging members 63a, 63b, 63b are engaged with each other. Next, the attachment / detachment levers 63c, 63c are operated, and the lower engagement pins 71b,
71b is fixed to the lower engagement members 63b and 63b.

The planting work machine 70 is a six-row planting machine, and includes a transmission case 72 which also serves as a frame, a seedling mount 73 which reciprocates left and right on which seedlings are mounted, and a seedling on the seedling mount is planted in a field scene. Going planting device 74, ..., Center float 75 for leveling
And side floats 76, 76 and the like. The center float 75 is also a sensor for detecting the unevenness of the field scene, and during the planting work, the working machine lifting control valve V ₃ is driven according to the vertical movement of the center float 75, and the planting depth of the seedlings is constantly maintained. It is designed to be kept constant.

The planting work machine 70 is rotatably supported by a rolling shaft 77 projecting obliquely downward and rearward from the lower end of the work machine side hitch 71, and the planting work machine 70 is tilted depending on the left and right inclination of the field scene. 70 rolls, and the planting depth of the seedlings of each row is also kept constant. In order to prevent the planting work machine 70 from rolling suddenly, the work machine side hitch 71 and the seedling stand frame 73a of the planting work machine 70 are connected by neutral return springs 78, 78. Further, in order to maintain the balance when the seedling placing table 73 slides to the left and right, the work machine side hitch 71 and the left and right end portions of the seedling placing table 73 are connected by balance springs 79, 79.

When the planting work machine 70 is mounted and the seedling stand 73 is stopped at a position deviated from the left-right center, the work machine side hitch 71 is tilted left and right by being pulled by the balance springs 79, 79. It is in a state. In this state, the engaging members 63a, 63b, 63b and the engaging pins 71a, 71b, 7 can be lifted even when the traveling vehicle side hitch 63 is lifted.
Since it does not engage with 1b, the work machine mounting links 60, 6
There is provided horizontal correction means for correcting the work machine side hitch 71 so as to be horizontal in association with the raising operation of 1, 61.

The horizontal correction means is composed of rolling lock pins 112, 112 which are projected on both left and right sides of the transmission case 72.
And rolling lock arms 113, 113 attached to the left and right side surfaces of the working machine side hitch 71 so as to be vertically rotatable.
And rolling lock operation pins 114, 114 provided on the upper link 60. Work machine mounting link 60,
When 61, 61 are raised, the rolling lock actuating pin 114 on the same side pushes down the front end of the rolling lock arm 113 on the upper slope side. As a result, the rear end of the rolling lock arm 113 moves upward, but when the rear end engages with the rolling lock pin 112, the rolling lock arm 113 cannot move further, and the reaction force causes the hitch 7 on the working machine side.
1 rotates in the direction of correcting the left-right inclination. The rolling lock operating pins 114, 114 are springs 115, 11
5 is elastically positioned by the spring 5, the spring 115 absorbs the amount of operation of the rolling lock operation pin 114 that accompanies the work machine side hitch 71 even if the upper link 60 further rises after being corrected horizontally. ,
The rolling lock actuating pin 114 does not push the rolling lock arm 113 further down.

Pin holes 113a, 113a provided in the rolling lock arms 113, 113 and the working machine side hitch 7
By inserting the lock pin into the pin hole provided in 1, the work machine side hitch 71 can be horizontally fixed even when the business machine mounting links 60, 61, 61 are lowered.

A granular material supply device 80 is provided on the rear side of the control seat 50. The granular material supply device 80 feeds out granular material such as fertilizers and seeds stored in a hopper 81 shared by each strip downward by a feeding device 82, ...
It is configured to be conveyed in the insides of the guides, and to be guided to the supply guides 84 provided in the vicinity of the side portions of the planting strip. Supply guide 8
On the front side of 4, ..., Groovers 85, ... Forming grooves for fertilization or sowing on the surface soil surface of the field are provided. The supply guides 84, ... And the grooving device 85 ,.
It is attached to 5,76,76. 8 in FIG.
6 is a blower for blowing the fertilizer transporting air into the conduits 83, ..., 87 is a motor for driving the blower, and 88 is an air chamber for supplying the air blown from the blower 86 to the respective conduits 83 ,.

As shown in FIG. 16, the planting position P, ... By the planting device 74, ... And the granular substance supply position Q ,. One float is arranged on each of the left and right sides of each float 75, 76, 76 so that the position Q is located. Inter-row pitch p of planting position P, ... and granular material supply position Q, ...
And the planting positions P,
The inter-row pitch p, ... Of the granular material supply position Q, ... Are the same.

When the rice planting work is performed, the seedlings are placed on the seedling placing table 73, and the fertilizer is put in the hopper 81.
0 and the granular material supply device 80 are driven to advance the machine body. Then, the seedlings on the seedling mounting table 73 are planted on the surface soil surface of the field at intervals with a constant pitch, and at the same time, the hopper 8 is placed in the groove formed in the vicinity of the left side of the seedling planting groove by the grooving device 85.
The fertilizer supplied from No. 1 is discharged.

When performing direct sowing work, seeds are put in the hopper 81, and the planting work machine 70 is not driven, but only the granular material supply device 80 is driven. Then, the seeds supplied from the hopper 81 are sown in the groove formed by the groovers 85, .... The pitch between sowing lines is also equal.

When used for management work, as shown in FIG. 17, the vehicle height of the traveling vehicle body 1 is increased, and a work machine such as a granular material spraying machine 90 is mounted on the work machine mounting links 60, 61, 61. . The hitch 91 of the granular material sprayer 90 is also a planting work machine 70.
The hitch 76 has substantially the same structure. In FIG. 17, 93 is a spraying boom for spraying the granular material, 94 is a transfer hose for transferring the granular material from the feeding device 82 to the spraying boom 93, 95 is a spraying blower that blows out air for transporting the granular material, and 96 is It is a blower hose that sends the air blown from the spray blower to the air chamber 88.

[0047]

As described above, since the seedling transplanting / direct seeding machine according to the present invention has the same pitch between the granular material spreading strips and the seedling planting strips, the fertilizer applicator of the fertilizer planting machine is used for direct seeding. It has become possible to use as a seedling transplanter for planting seedlings in the field soil, or as a direct seeder for direct seeding in the field soil.

[Brief description of drawings]

FIG. 1 is a side view of a combined seedling transplantation / direct seeding machine.

FIG. 2 is a plan view in which a part of an agricultural traveling vehicle body is omitted.

FIG. 3 is a side view of a front wheel support portion in a front wheel raised position.

FIG. 4 is a front sectional view of a front wheel support portion in a front wheel raised position.

5 is a sectional view taken along line S ₁ -S _{1 in} FIG.

FIG. 6 is a side view of the front wheel support portion in a front wheel lowered position.

FIG. 7 is a front cross-sectional view of a front wheel support portion in a front wheel lowering position.

FIG. 8 is a side view of a rear wheel support portion.

FIG. 9 is a developed sectional view of a rear wheel support portion.

FIG. 10 is a side view of a control part of the traveling vehicle body.

FIG. 11 is a side view of a work implement mounting link.

FIG. 12 is a rear view of the work equipment mounting link.

FIG. 13 is a transmission system diagram.

FIG. 14 is a view showing a half of a side clutch / brake in an outer shape and a remaining half in a cross section.

FIG. 15 is a hydraulic circuit diagram.

FIG. 16 is a diagram showing a relationship between a seedling planting position and a granular material supply position.

FIG. 17 is a side view showing a state used for management work.

FIG. 18 is a front sectional view of another embodiment of the front wheel support portion.

19 is a sectional view taken along line S ₂ -S _{2 in} FIG.

FIG. 20 is a diagram showing a relationship between a seedling planting position and a fertilizer application position of a conventional fertilizer application planter.

[Explanation of symbols]

 P Seedling planting position Q Granules feeding position 1 Traveling vehicle 2 Front wheel 3 Rear wheel 70 Planting work machine 80 Granules supply device 90 Granules sprayer

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Katsu Nomura, 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefectural Engineering Department, Iseki Agricultural Machinery Co., Ltd. Inside the Engineering Department (72) Inventor Kazushi Ochi 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Iseki Agricultural Machinery Co., Ltd. (72) Inventor Hiroshi Suzuki, 1 Yakura, Tobe-machi, Iyo-gun, Ehime Prefecture Fumio Shigematsu, No. 1 Yakura, Tobe Town, Iyo-gun, Ehime Prefecture

Claims (1)

[Claims] 1. A planting device for planting a plurality of rows of seedlings on the surface soil portion of a field is provided such that the intervals between the planting rows are equidistant, and a plurality of grains of seeds, fertilizers, etc. are supplied to the surface soil portion of the field. The granular material supply device is provided such that the intervals between the supply lines are the same pitch as the intervals between the planting lines and the supply lines are located near the sides of the planting lines formed by the planting device. Seedling transplantation and direct sowing machine.