JP2007053931A5 - - Google Patents

Description

Seedling transplanter

The present invention relates to a seedling transplanter such as a riding rice transplanter .

A seedling planting device in a riding type rice transplanter, which is currently widely used, is connected to the rear of the traveling vehicle body, and when seedlings are planted, they are lowered onto paddy fields to plant seedlings. In parallel with the seedling planting work, fertilizer made of powder from the fertilizer is dropped into a fertilization groove formed near the side of the seedling planting strip. At this time, in the conventional fertilizer application device, the fertilizer feeding unit below the fertilizer tank is fed downward by a predetermined amount, and the fed granular fertilizer is blown from the blower provided on the side of the fertilizer feeding unit to the air chamber and It is designed to be dropped into the fertilizer groove via a fertilizer hose.
JP 2004-81099 A

Prevents blowers from sucking in mud and water in fertilizers that drop granular fertilizers fed from the fertilizer feed section below the fertilizer tank into the fertilizer ditch via a fertilizer hose by blowing air from the blower. It becomes a subject to make it the structure to do.
On the other hand, the fertilizer application disclosed in the above-mentioned patent documents has a configuration in which the blower is disposed on the side of the fertilizer feeding portion and the blower is driven by an electric motor, and an extra power source other than the engine is used. Further, when the blower is driven via the belt using power from the engine without using the electric motor, it is necessary to adjust the arrangement position of the blower in order to make the belt drive system simple. However, in order to adjust the position of the blower, it is necessary to adjust the positional relationship between the blower and the air chamber provided between the fertilizer feed hose, and the power from the engine is transmitted to the blower via the belt. In addition, it is difficult to adjust the arrangement positions of the blower and the air chamber.

The above-mentioned problem of the present invention is solved by the following means.
According to the first aspect of the present invention, the working device (7) is provided on the rear side of the traveling vehicle body (1) so as to be movable up and down, and the granular material discharge device ( 40) a storage tank (41), a granular material feeding part (42), an air chamber (48) for storing pressure air for transferring the granular material fed by the feeding part (42), In a seedling transplanter provided with a blower (47) for supplying pressure air to the air chamber (48), the driving force from the prime mover (9) of the traveling vehicle body (1) is passed through the air suction port of the blower (47). A seedling transplanting machine provided on the pulley (47a) side for transmission .

The invention according to claim 2 is that the blower (47) is driven by the power from the prime mover (9) being transmitted through the endless belt (14a), and the distance from the prime mover (9) can be changed. A connecting pipe (48a) that is attached to (1) and absorbs a change in the position of the blower (47) is provided in the pressurized air supply path from the blower (47) to the air chamber (48). The seedling transplanter according to claim 1.
The invention according to claim 3 is that the blower (47) is driven by the power from the prime mover (9) being transmitted via the endless belt (14a), and the distance from the prime mover (9) can be changed. The seedling transplanter according to claim 1, wherein the seedling transplanter is attached to (1), and the air chamber (48) is also movable in accordance with a change in position of the blower (47).

According to the first aspect of the present invention, since the air suction port of the blower (47) is provided on the pulley (47a) side that transmits the driving force from the prime mover (9) of the traveling vehicle body (1), the blower (47) Can suck in mud and water, supply the pressure air from the blower (47) to the air chamber (48), and from the storage tank (41) by the pressure air from the air chamber (48) The granular material fed out in (42) can be transferred.

According to the second aspect of the present invention, in addition to the effect of the first aspect, the connection for absorbing the position change of the blower (47) in the pressurized air supply path from the blower (47) to the air chamber (48). If the pipe (48a) is made of, for example, rubber, the connecting pipe (48a) absorbs the position change, so that the fan (47) can be easily moved only by moving the fan (47).
According to the third aspect of the invention, in addition to the effect of the first aspect, the air chamber (48) can be moved in accordance with the position change of the blower (47). Supply is stabilized and the granular material transfer accuracy can be stabilized.

A four-row planting type rice transplanter as an embodiment of the present invention will be described in detail with reference to the drawings. A side view of the riding rice transplanter is shown in FIG. 1, and a plan view is shown in FIG.
A pair of left and right front wheels 2, 2 and rear wheels 3, 3 serving as traveling wheels are installed before and after the vehicle body 1. A steering device having an operation box 4 and a steering handle 5 and the like is provided on the front step 6 at the front upper part of the vehicle body, and a seedling planting part 7 is attached to the rear part of the vehicle body so as to be movable up and down. A driver's seat 8 is provided on the rear side of the operation box 4, and an engine 9 that transmits power to each part of the rice transplanter is mounted below the driver's seat 8. A rear step 18 that also serves as a fender cover for the rear wheel 3 is provided on the rear side of the step 6. In this specification, the left direction and the right direction toward the forward side of the riding rice transplanter are referred to as the left side and the right side, respectively.

  The seedling planting unit 7 includes a seedling mounting tank 10 that reciprocates left and right, a planting device 11 that cuts out one seedling and transplants it into the soil, a float 12 that levels the seedling planting surface, and the like. By driving the engine 9, the power is transmitted to the input shaft 16 (not shown) via the engine output pulley 13, the transmission belt 14 b and the mission input pulley 15 (not shown). Is transmitted.

  The transmission is transmitted from the transmission case 17 to the left and right front wheel drive case 19 through a front wheel axle case projecting in the left and right direction, and the front wheel axle 20 is driven to rotate to drive the left and right front wheels 2 and 2. Also, left and right rear wheel transmission shafts 21 for transmitting power from the rear part of the transmission case 17 to the rear are provided, and the left and right rear wheel transmission shafts 21 are driven to transmit into the left and right rear wheel transmission cases 22 to The wheel axle 23 is rotationally driven to drive the left and right rear wheels 3 and 3.

  The seedling planting section 7 is provided so as to be moved up and down by the vertical movement of the lifting link mechanism 25 by expansion and contraction of the hydraulic lifting cylinder 24. Further, the seedling planting portion 7 is configured to operate by being transmitted by a planting transmission shaft 26 extending rearward from the case 17 by the power from the transmission case 17.

  The steering handle 5 is steered by steering the left and right front wheels 2 and 2 via a steering shaft 27 and a pitman arm (not shown), a tie rod, and the like. A main transmission lever 29 is provided on the left side of the steering handle 5, and a throttle lever 30 is provided on the right side. In addition, a stop lever 31 for stopping the driving of the aircraft and driving of the seedling planting unit 7 is provided on the left side of the operation box 4, and a planting capable of moving the seedling planting unit 7 up and down and driving on and off is provided on the right side. Attaching / elevating lever 32 (FIG. 2) is provided.

  A main clutch pedal 33 (FIG. 2) is provided at a position on the left side of the front portion of the vehicle body 1. The operation of the main body and the driving of the seedling planting unit 7 are stopped by the depression operation of the main clutch pedal 33. Further, a brake operating tool (hereinafter referred to as a brake pedal) 34 (FIG. 2) is provided at a position near the right side of the front portion of the vehicle body 1. The brake pedal 34 operates a four-wheel brake device (not shown) in the mission case 17 via a coupling mechanism (not shown) by depressing the pedal 34 to brake the left and right front and rear wheels 2 and 3. It is composed. The main clutch pedal 33 may be omitted, and the main clutch may be disengaged at the same time when the brake pedal 34 is depressed.

  In the present embodiment, a fertilizer application device 40 is provided behind the driver's seat 8. The fertilizer application device 40 feeds the granular fertilizer stored in the fertilizer tank 41 by a certain amount by the feeding portions 42,... Are introduced into a fertilization structure formed in the vicinity of the side portion of the seedling planting row by a grooved body 45 provided on the front side of the fertilizer application guide 44.

  The blower 47 is rotated by a belt 14a via a pulley 47a disposed below the driver's seat 8 by the belt 14a, and the air generated by the blower 47 is changed from a long air chamber 48 to a chamber hose 49. , ... are blown into the fertilizer hose 43, ..., and the fertilizer in the fertilizer hose 43, ... is forcibly conveyed by wind pressure.

Further, by configuring the U-shaped chamber hose 49,... With an elastic body, maintenance of the feeding portion 42 can be performed from the driver's seat 8 side.
Further, if an air suction port is provided on the side surface of the blower 47 on the pulley 47a side, the pulley 47a is on the opposite side of the rear wheel 3 with the blower 47 as the center, so there is no possibility of sucking mud and water.

In addition, if a small drainage hole is provided below the blower 47 so that there is no problem with blowing air, the water will collect in the blower 47 when the car is washed, and the blowout of the water when the blower 47 is used is prevented. Can do.
As shown in FIG. 3, the drain hole 47b is provided with a lid so that the hole 47b is opened only when the blower 47 is in operation, and the lid 47c is closed by wind pressure while the blower 47 is in operation, and the engine 9 is turned off. Then, it is desirable that the lid 47 be a spring lid or the like so that a light force is applied so that the lid 47c is pushed upward.

FIG. 4 shows a left side view of the work machine at a portion where the blower 47 and the air chamber 48 are installed, and FIG. 5 shows a rear view of the work machine. Further, FIG. 6A shows a simplified left side view of a portion where the blower 47 and the air chamber 48 are installed, and FIG. 6B shows a plan view thereof.
A rubber pipe 48 a is provided as a connecting pipe for absorbing a change in the position of the blower 47 in the pressurized air supply path from the blower 47 to the air chamber 48. Thus, the fan drive shaft of the blower 47 is provided with a pulley 47a that transmits the driving force from the engine 9, and the blower front and rear moving flange for changing the installation position of the pulley 47a to adjust the length of the belt 14a. 46 is provided so as to be swingable in the front-rear direction.

The blower back-and-forth moving flange 46 is provided with a swinging fulcrum 46b centering on the drive shaft of the pulley 47a and a long hole 46a on the opposite side of the swinging fulcrum 46b. 46 can be swung. At this time, since the pipe 48a for connecting the blower 47 and the air chamber 48 is made of rubber, even if the blower 47 is slightly swung, the pipe 48a is fixed between the air chamber 48 and the blower 47 fixed to the airframe. Misalignment can be absorbed.
That is, since the connecting pipe 48a, which is a pressure air supply path from the blower 47 to the air chamber 48, absorbs the position change of the blower 47, the arrangement of the blower 47 can be easily changed only by moving the blower 47.

  Further, if the connecting pipe 48a is a rigid body and the air chamber 48 is supported by the pipe 48a and the air chamber 48 is also moved back and forth as the position of the blower 47 is changed, Since the positional relationship with the air chamber 48 does not change so much, the supply of pressurized air to the air chamber 48 is stabilized, and the accuracy of the granular material transfer can be stabilized.

  Also, as shown in FIGS. 4 and 5, a blower 47 is disposed between the outer frame 55 of the fuselage and the engine 9, and a muffler 51 is provided obliquely downward below the blower 47. At this time, the blower 47 is disposed at the lower left rear of step 6 and the muffler 51 is attached to the left rear portion of the engine 9. A square pipe-shaped horizontal frame 57 is provided behind the outer frame 55 of the machine body, and a blower 47 is supported by the frames 52 and 57 between the round pipe-shaped step receiving frames 52 extending in a direction parallel thereto. The space between the outer frame frame 55 and the step receiving frame 52 is fixed by a plate 56.

  Since the blower 47 is arranged under the step receiving frame 52 that receives the step 6, compared with the electric motor type blower arranged above the step 6, the inside of the frame 52, 55, 57 and the plate 56 of the fuselage Blower-related parts can be effectively arranged in a small space.

  The swing fulcrum 46b of the blower back-and-forth moving flange 46 is rotatably supported by a support plate 57a provided in front of the machine body outer frame frame 55. Since the pin 59a provided in the frame 59 fixed to the step receiving frame 52 is inserted into 46a, the blower back-and-forth moving flange 46 can swing around the swinging fulcrum 46b.

  The round pipe-shaped step receiving frame 52 may bend in the vertical direction, but the blower 47 connects the round pipe-shaped step receiving frame 52 at the upper rear and the square pipe-shaped horizontal frame 57 at the lower rear. Therefore, the blower 47 itself can increase the rigidity of the step receiving frame 52 and prevent the deflection.

  Further, since the blower back-and-forth moving flange 46 also supports both the frames 52 and 55 between the body outer frame frame 55 and the step receiving frame 52, the blower back-and-forth moving flange 46 also reinforces the frames 52 and 55.

  Further, power from the engine 9 to the blower 47 of the fertilizer application 40 is performed by the transmission belt 14a, and power from the engine 9 to the traveling device in the transmission case 17 is performed by the transmission belt 14b. By arranging the fertilizer 40 and the transmission case 17 and applying the traction force from the engine 9 in the opposite direction by the transmission belts 14a and 14b, respectively, the engine 9 is prevented from being pulled in one direction by the belt 14a or 14b. The balance of the engine driving force transmission system can be improved.

  In addition, as shown in the rear view of the rice transplanter in FIG. 5, a blower 47 is arranged on the lower left side between the fertilization tanks 41, 41 arranged separately on the left and right sides, and the planting part 7 is planted on the lower right side. A planting transmission shaft 26 for driving the clutch and a fertilization drive output shaft 61 for driving the feeding portion 42 of the fertilizer application apparatus 40 are arranged. According to this structure, a power transmission mechanism can be arrange | positioned with sufficient balance in the left-right direction of a body.

  Further, the fertilization drive output shaft 61 is disposed obliquely above the planting transmission shaft 26, and the planting transmission shaft 26 and the fertilization drive output shaft 61 are disposed in a planting clutch case 62 that is disposed to be inclined with respect to the field scene. By providing, the planting clutch case 62 does not interfere with the rear wheel 3, and it is possible to prevent the fertilization drive output shaft 61 and the planting transmission shaft 26 from interfering when the planting part 7 is raised. With the above configuration, these members could be installed compactly even in a four-row rice transplanter with a narrow tread.

Further, as shown in the plan view of the layout of the main members in the vicinity of the rear wheel 3 in FIG. 7, the hydraulic cylinder 24 for raising and lowering the planting portion 7 disposed at the center between the pair of rear wheels 3 and one rear A blower 47 is disposed between the wheels 3.
In the rice transplanter equipped with the electric motor type blower, the blower is provided on the side of the fertilizer application device 40, so the vehicle width is widened. However, the belt-driven blower 47 of this embodiment is effective in a relatively small space. In addition, these members can be arranged.

  In addition, as shown in FIG. 6A, since the suction port 47d of the blower 47 is arranged above the muffler 51, the air warmed by the muffler 51 can be easily sucked into the blower 47. In a blower using an electric motor, if the electric motor is disposed in the vicinity of the engine 9, the motor loses its durability due to heat from the engine 9. However, in the case of the mechanical blower 47 of the present embodiment, the engine 9 is relatively Even if the blower 47 is disposed nearby, the blower 47 is hardly affected by heat, so the suction port 47d of the blower 47 can be disposed in the vicinity of the muffler 51 from which the heat from the engine 9 is discharged. The blower 47 can inhale air.

Also, a blower 47 is disposed between the outer frame 55 of the fuselage and the engine 9, a muffler 51 is provided obliquely below the blower 47, and a blower 47 is provided below the step receiving frame 52 that receives step 6. Since it is disposed, blower-related parts can be effectively disposed in a small space in the frames 52, 55, 57 of the airframe as compared with the electric motor type blower disposed above the step 6. (See FIG. 4).
At this time, the blower 47 is disposed at the lower rear left side of Step 6 and is disposed at the left rear portion of the engine 9.

Moreover, you may employ | adopt the structure which arrange | positions the air outlet 47e of the mechanical type blower 47 of a present Example horizontally as shown in the principal part side view of FIG. If the air outlet 47e of the blower 47 is arranged upward, when muddy water is sucked from the outlet 47e, the air outlet 47e may be accumulated in the blower case. Even if foreign matter such as moisture or dust enters, by removing the duct 63 connected to the air outlet 47e of the blower 47 and rotating the blower 47, the foreign matter can be easily removed, and maintenance can be improved. .
At this time, if the duct 63 connecting the blower 47 and the air chamber 48 is made of an elastic material, the degree of freedom of arrangement of the blower 47 and the air chamber 48 is increased.

  The seedling transplanter of the present invention can be used as a compact seedling transplanter such as a riding rice transplanter.

1 is an overall side view of a passenger rice transplanter according to an embodiment of the present invention. It is a whole top view of the riding rice transplanter of FIG. It is a longitudinal cross-sectional view of the blower of the fertilizer application of the riding rice transplanter of FIG. It is a principal part left view of the fertilizer application part of the riding rice transplanter of FIG. It is a principal part rear view of the fertilizer application part of the riding rice transplanter of FIG. It is the right view (FIG. 6 (a)) and top view (FIG. 6 (b)) of the blower and air chamber of the fertilizer application of the riding rice transplanter of FIG. It is a top view explaining the arrangement | positioning relationship, such as a blower and a rear wheel of the riding rice transplanter of FIG. It is a whole side view of the other Example of the riding rice transplanter of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling vehicle body (vehicle body) 2 Front wheel 3 Rear wheel 3b Rear wheel lug 4 Operation box 5 Steering handle 6 Step 7 Work device (seed planting part)
8 Driver's seat 9 Engine (engine)
DESCRIPTION OF SYMBOLS 10 Seed tank 11 Planting apparatus 12 Float 13 Engine output pulley 14a Endless belt (power transmission belt) 15 Mission input pulley 16 Input shaft 17 Transmission case 18 Rear step 19 Left and right front wheel drive case 20 Front wheel axle 21 Rear wheel transmission shaft 22 Rear wheel Transmission case 23 Rear axle 24 Hydraulic lifting cylinder 25 Lifting link mechanism 26 Planting transmission shaft 27 Steering shaft 29 Main transmission lever 30 Throttle lever 31 Stop lever 32 Planting / elevating lever 33 Main clutch pedal 34 Brake pedal 40 Equipment (fertilizer) 41 Storage tank (fertilizer tank)
42 Powder body feeding part (feeding part) 43 Fertilizer hose 44 Fertilizer guide 45 Groove body 46 Blower forward / backward moving flange 46a Oscillating fulcrum 46b Long hole 47 Blower
47a Pulley 47b Drain hole 47c Lid 47d Suction port 47e Air outlet 48 Air chamber 48a Connecting piping 49 Chamber hose 51 Muffler 52 Step receiving frame 52a Oscillating fulcrum 55 Outer frame frame 56 Plate 57 Square pipe-shaped horizontal frame 57a Support plate 59 Frame 59a Pin 61 Fertilization drive output shaft 62 Planting clutch case 63 Duct

Claims (3)

A working device (7) is provided on the rear side of the traveling vehicle body (1) so as to be movable up and down, and a storage tank (41) of the granular material discharge device (40) is disposed on the rear side of the traveling vehicle body (1) and on the front side of the working device (7). And a granular material feeding part (42),
The air chamber (48) which stores the pressure wind for transferring the granular material delivered by the delivery part (42), and the air blower (47) which supplies the pressure air to the air chamber (48) were provided . In the seedling transplanter,
A seedling transplanter characterized in that an air suction port of the blower (47) is provided on a pulley (47a) side that transmits a driving force from a prime mover (9) of a traveling vehicle body (1) . The blower (47) is attached to the traveling vehicle body (1) so that the power from the prime mover (9) is transmitted through the endless belt (14a) and driven, and the distance from the prime mover (9) can be changed.
  The seedling transplant according to claim 1, wherein a connecting pipe (48a) for absorbing a change in position of the blower (47) is provided in a pressure air supply path from the blower (47) to the air chamber (48). Machine. The blower (47) is attached to the traveling vehicle body (1) so that the power from the prime mover (9) is transmitted through the endless belt (14a) and driven, and the distance from the prime mover (9) can be changed.
  The seedling transplanter according to claim 1, wherein the air chamber (48) is also movable in accordance with the position change of the blower (47).