JP3862674B2 - Ride type transplanter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a riding transplanter provided with a moving member that interior of the engine in front of the driving unit.
[0002]
[Prior art]
Traditionally, in the above-described passenger-type transplanter, an air-cooled type engine has been used as an engine built in the prime mover.
[0003]
[Problems to be solved by the invention]
In recent years, in the riding type transplanter, auxiliary work devices such as multiple streaking and fertilizers have been added, and the work load tends to increase gradually. Therefore, it is desired to mount an engine with high output in order to cope with an increase in load, and the use of a water-cooled engine has been studied.
[0004]
By the way, in other riding-type farm work machines such as agricultural tractors and lawn mowers equipped with a water-cooled engine, a radiator is provided in front of or behind the engine body with the output shaft directed in the front-rear direction, and the engine output is reduced. A mode in which the radiator is cooled by a driven cooling fan is adopted, and it is conceivable that a similar engine mounting mode is also adopted in the riding type transplanter.
[0005]
However, when a water-cooled engine is arranged in the front-rear direction, the engine body, cooling fan, and radiator are arranged in the front-and-rear direction. As a result, the driving part is generally longer in the front-rear direction, and the operating position is fixed. The front end of the prime mover will be extended forward of the aircraft. That is, it is predicted for the driver that the forward view is deteriorated and the workability is lowered. Further, when the prime mover extends forward, the length of the airframe increases, resulting in a problem that a space necessary for changing the direction of the airframe at the shore, that is, a so-called headland becomes large.
The present invention has been made paying attention to such points, and it is an object of the present invention to rationally arrange a water-cooled engine without enlarging the driving part in the front-rear direction.
[0006]
[Means for Solving the Problems]
[Configuration, operation and effect of the invention of claim 1]
(Structure) The invention which concerns on Claim 1 makes the driving | running | working part comprised with a water-cooled engine main body, the cooling fan driven by the engine main body, and the radiator cooled by the said cooling fan ahead of a driving | running | working part. The passenger-type transplanter installed in the hood provided in is configured as follows.
An engine support frame is provided at the front of the machine body. The engine support frame is formed in a hollow shape, and a part of the lower part of the engine body is dropped into the engine support frame so that the engine body is mounted on the engine support frame. In addition, the engine main body and the radiator are arranged sideways with respect to the traveling aircraft body, and constitutes a driving part with a good front and lower line of sight in the sitting state in the driving part,
A boarding / alighting step arranged on the lateral outer side of the bonnet is arranged at a height corresponding to an intermediate portion of the height of the radiator,
The engine body is provided with an output unit for taking out power from the side opposite to the side facing the radiator to the outside, and this output unit is placed in a lower space on the step side laterally outside the hood. It is placed inside.
[0007]
(Operation) According to the invention according to claim 1, in the state where the engine body, the cooling fan, and the radiator are arranged side by side, the required space in the front-rear direction of the entire engine is small, and this water-cooled engine is installed. The length of the prime mover in the front-rear direction can be short.
[0008]
(Effects) According to the invention according to claim 1, the driving part with the water-cooled engine built therein can be configured to be short in the front-rear direction, and the length of the fuselage is increased without deteriorating the forward view for the driver. Therefore, it is possible to mount a water-cooled engine having a large output without being used, and it is useful in constructing a riding type transplanter that can cope with an increase in workload.
[0009]
[Configuration, operation and effect of invention of claim 2]
(Structure) The invention according to claim 2 is the invention according to claim 1, wherein a muffler is arranged below the step of getting on and off the lateral side opposite to the radiator of the engine body.
[0010]
(Operation) According to the invention according to claim 2, the lower portion of the air path in which the cooling exhaust air after cooling the radiator flows faces the lower side of the getting-on / off step, and the cooling exhaust air is below the getting-on / off step. Also flows easily. Therefore, the muffler disposed below the getting-on / off step is cooled by the cooling exhaust air.
[0011]
(Effect) The invention according to claim 2 exhibits the effect of the invention according to claim 1 and can effectively cool the muffler by effectively using the cooling exhaust air after cooling the radiator.
[0012]
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment in which the present invention is applied to a riding type rice transplanter as an example of a riding type transplanter will be described with reference to the drawings. As shown in FIG. 1, this riding type rice transplanter has a basic structure in which a seedling planting device 3 is connected to a rear portion of a four-wheel drive type riding traveling machine body 1 via a four-link mechanism 2 so as to be movable up and down. ing. Here, the quadruple link mechanism 2 connects the hydraulic cylinder 4 over a connection point between the front end of the upper link 2a and the fuselage side and a connection point between the rear end of the lower link 2b and the lower end of the rear link 2c. The quadruple link mechanism 2 is pulled up and raised by the shortening drive of the hydraulic cylinder 4, and the quadruple link mechanism 2 is lowered by its own extension by the extension operation of the hydraulic cylinder 4. The seedling planting device 3 has a seedling platform 5 on which seedlings are placed and reciprocally moved laterally at a fixed stroke, a plurality of planting mechanisms 6 for planting two strains by one rotation, and a planting paddy surface. The entire seedling planting device 3 is connected to the lower portion of the rear link 2c so as to be freely rollable. In addition, the fertilizer application apparatus 8 and the herbicide spraying apparatus are attached to the seedling planting apparatus 3 as needed.
[0014]
A transmission case 12 having left and right front wheels 11 steered in a power steering manner is connected to a front portion of the body frame 10 in the passenger traveling body 1, and left and right independent to the rear portion of the body frame 10. A rear axle case 14 equipped with a rear wheel 13 that can be braked is connected to the vehicle body, and a driving unit 17 having a driving seat 16 attached to the upper part of the fuselage frame 10 via a rear wheel fender 15 is provided. The driving part 19 covered with the bonnet 18 is arranged at the front part of the mission case 12. A front frame 20 is connected to the front portion of the body frame 10 so as to surround the driving portion 19 from the left and right sides and the front portion, and between the left and right portions of the bonnet 18 and the left and right portions of the front frame 20 in the driving portion 19. A boarding / alighting step 22 is provided that allows the worker to walk between the front of the machine and the driving step 21 of the driving unit 17. A steering handle 23 for steering the front wheels is provided at the rear part of the driving part 19, and a fuel tank 24 is provided at a position above the rear part of the driving part 19. A battery 25 is provided below the right boarding / alighting step 22 so that the battery 25 can be inspected by opening the cover 22a attached to the right boarding / alighting step 22.
[0015]
As shown in FIG. 7, an engine support frame 30 having a hollow shape in plan view is connected to the front portion of the transmission case 12, and a water-cooled gasoline engine E is vibration-proof on the engine support frame 30. Mounted and supported by the state. More specifically, the water-cooled engine E is provided with an engine body 31 that is disposed sideways so that the output shaft 31a protrudes in the left lateral direction, and is disposed at the upper right side of the engine body 31 and driven by engine output. A cooling fan 32, and a radiator 33 which is installed on the right side of the engine body 31 so as to face the cooling fan 32. The carburetor 34 is disposed on the front side of the engine body 31 and the rear side thereof. Exhaust manifolds 35 are provided on the sides. An air cleaner 36 connected to the carburetor 34 via a hose 27 is provided above the engine body 31 via a mounting base 28, and an open end 37 a of an intake hose 37 led out from the air cleaner 36 is a radiator 33. The outside air taken in from the air inlet 38 formed on the right side surface of the bonnet 18 is sucked into the air cleaner 36. Further, a muffler 39 connected to the exhaust manifold 35 is disposed below the left boarding step 22.
[0016]
As shown in FIGS. 6 and 7, mounting brackets 40, 41 are connected and fixed to the front and rear of the engine body 31, and a fulcrum bracket 42 connected to the front mounting bracket 40 and the front portion of the engine support frame 30. Are connected to each other through a vibration isolating bush 43 and a fulcrum shaft 44 so as to be able to rotate up and down around the horizontal axis P, and the rear mounting bracket 41 and the engine support frame 30 are inclined at two positions on the left and right. The anti-vibration connection is established via the anti-vibration rubber 45. A part of the lower part of the engine main body 31 that is supported in a vibration-proof manner as described above is dropped into the hollow space of the engine support frame 30, and the engine main body 31 is mounted low.
[0017]
Here, the left side portion 30L of the engine support frame 30 is configured as a three-dimensional structure that is recessed toward the engine side by a sheet metal welding structure, and the lower portion of the flywheel 46 of the engine body 31 enters the recessed portion. Yes. As shown in FIG. 7, a plurality of holes 30a are formed on the bottom surface of the left side portion 30L of the engine support frame 30 for weight reduction. Further, the right side portion 30R of the engine support frame 30 is formed by forming a square pipe into a hollow shape, and a lubrication pump 47 of the engine body 31 is provided adjacent to the hollow portion. A pump unit 48 in which a power steering pump and a hydraulic cylinder operating pump are connected in series is attached to the lower part of the right side surface of the engine main body 31, and is disposed so as to protrude laterally outward under the radiator 33. The engine body 31 is a two-cylinder OHC (overhead camshaft) engine, and the cooling fan 32 is mounted on the upper side of a transmission case 49 provided on the right side surface of the engine body 31.
[0018]
The front and rear mounting brackets 40, 41 for mounting the engine are extended to the right, and the radiator 33 is connected to both the extended ends 40a, 41a through vibration isolating rubber 50. Here, the radiator 33 and the cooling fan 32 are respectively displaced from the engine body 31 in the rearward direction, and the outside air sucked from the intake port 38 on the right side of the bonnet by the cooling fan 32 passes through the radiator 33. After cooling, it becomes cooling exhaust air and passes through the rear side of the engine body 31. At this time, an air guide cover 51 having an inlet extending toward the windward side is provided outside the exhaust manifold 35, and the exhaust manifold 35 is efficiently cooled by the cooling exhaust air taken into the air guide cover 51. It is configured to Then, a part of the cooling exhaust air that has passed through the rear side of the engine body 31 is discharged out of the machine from an exhaust port 52 formed on the left side surface of the bonnet 18, and the other part of the cooling exhaust air is on the left side. It will flow into the lower part of step 22 and the muffler 39 will be cooled from the circumference | surroundings.
[0019]
Further, as shown in FIGS. 5 and 10, an exhaust pipe 53 connecting the exhaust manifold 35 and the muffler 39 is connected to and supported on the upper portion of the engine body 31 via a stay 54, and the exhaust pipe 53 includes a cover 55a, 55b, and a part of the cooling exhaust air is guided by the covers 55a and 55b to cool the exhaust pipe 53. Further, as shown in FIG. 3, the opening end 56a of the tail pipe 56 projecting from the rear end of the muffler 39 has a pedal attachment in which a notch is formed so as to insert the main clutch pedal 57 on the left side on the operation unit step 21. It is arranged at a position deviating rearward and laterally outside the hole 58, and it is considered that the exhaust gas emitted from the tail pipe 56 does not flow onto the step.
[0020]
An output part (consisting of the output shaft 31a and an output pulley attached to the output shaft 31a) located on the left side of the engine body 31 and an input part (input shaft 12a provided on the left side of the mission case 12 ) And an input-side pulley mounted on the input shaft 12a) is a belt-type continuously variable transmission 60 (between the output-side pulley and the input-side pulley ) provided between the output portion and the input portion . Each of which is composed of a split pulley and is constructed by stretching a V-belt between the output pulley and the input pulley) , and the gear transmission in the continuously variable transmission 60 and the transmission case 12 The power shifted by the mechanism is transmitted to the front wheels 11 and the rear wheels 13, and the power extracted from the transmission case 12 toward the rear is the transmission shaft. It is transmitted to the seedling planting device 3 through 61.
[Brief description of the drawings]
[Fig. 1] Overall side view of riding rice transplanter [Fig. 2] Side view of the prime mover seen from the left side of the fuselage [Fig. 3] Plan view of the prime mover [Fig. 4] Front view of the prime mover [Fig. FIG. 6 is an exploded perspective view around the engine. FIG. 7 is an exploded perspective view of the engine mounting structure. FIG. 8 is a side view of the engine mounting structure. FIG. 9 is an airframe showing a radiator support structure. Side view from right side [Fig. 10] Exploded perspective view of muffler cover structure [Explanation of symbols]
17 Driving part 19 Driving part 22 Boarding / alighting step 30 Engine support frame 31 Engine body 32 Cooling fan 33 Radiator 39 Muffler E Engine

Claims (2)

A riding type in which a driving part composed of a water-cooled engine main body, a cooling fan driven by the engine main body, and a radiator cooled by the cooling fan is provided in a hood provided in front of the driving part. A transplanter,
An engine support frame is provided at the front of the machine body. The engine support frame is formed in a hollow shape, and a part of the lower part of the engine body is dropped into the engine support frame so that the engine body is mounted on the engine support frame. In addition, the engine main body and the radiator are arranged sideways with respect to the traveling machine body to constitute a driving part with a good front and lower line of sight in the sitting state in the driving part,
A boarding / alighting step arranged on the lateral outer side of the bonnet is arranged at a height corresponding to an intermediate portion of the height of the radiator,
The engine body is provided with an output unit for taking out power from the side opposite to the side facing the radiator to the outside, and this output unit is placed in a lower space on the step side laterally outside the hood. A passenger-type transplanter that is placed inside . The riding type transplanter according to claim 1, wherein a muffler is disposed below a step of getting on and off laterally opposite to the radiator of the engine body .

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