JP2566507Y2 - Riding agricultural work machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a riding agricultural machine such as a rice transplanter or a tractor, more specifically, an engine is mounted on a front part of a body, a driver's seat is provided on a rear side, and front wheels are provided on front and rear parts of the body. And a riding agricultural work machine provided with a rear wheel.

[0002]

2. Description of the Related Art Conventionally, this type of riding agricultural work machine has a bonnet covering an outer periphery of an engine mounted on a front portion of an airframe, and an engine room inside the hood near an engine room.
A muffler for silencing exhaust gas from the engine is provided.

[0003]

However, as described above, when the muffler is disposed near the engine inside the hood, the heat of the muffler and the heat of the exhaust gas cause the heat of the engine to be reduced. There has been a problem that the balance becomes worse and the engine becomes hot and engine trouble occurs. For example, the temperature of the engine becomes high and causes deterioration and seizure of the oil loaded therein,
Further, the fuel or the like supplied into the engine is evaporated to generate steam, air, or the like. With the generation of the steam or air, the supply of fuel to a fuel injection device or the like of the engine is hindered. Stops, causing a so-called vapor lock phenomenon. In addition, since the exhaust gas from the muffler is blown out from the one side of the hood in the machine width direction to the outside of the machine, for example, when performing a seedling planting operation with a rice transplanter, a worker assists the seedling. When replenishment is performed, the exhaust gas from the muffler directly hits the work assistant, or a loud exhaust noise is generated around the work assistant, resulting in a poor working environment. There is also a problem that the exhaust gas from the muffler hits a spare seedling stand or the like placed on a ridge or the like and the seedlings of the spare seedling stand die.

An object of the present invention is to prevent the occurrence of various engine troubles caused by the heat of the muffler and the exhaust gas thereof, and to assist the worker in planting seedlings with a rice transplanter. When replenishing seedlings, the exhaust gas from the muffler directly hits the work assistant, eliminates the generation of loud exhaust noise around the work assistant, can improve the work environment, Another object of the present invention is to provide a riding agricultural machine capable of reliably preventing the seedlings of the spare seedling stand from withering when the exhaust gas from the muffler hits a spare seedling stand or the like placed on a ridge or the like.

[0005]

The riding agricultural machine according to the present invention is supported by front and rear wheels and has an engine mounted on the front of a body provided with steps, a driver's seat provided on the rear, and In a riding agricultural machine in which a muffler is connected to an engine via an exhaust pipe and the muffler is arranged between the front wheel and the rear wheel, the exhaust pipe and the muffler are:
The inner side of the outer edges of both sides of the body, disposed below the step, and the exhaust port of the muffler,
It is characterized in that it opens diagonally downward at a position between the two side portions.

[0006]

In the riding agricultural machine described above, the muffler 13 has the front and rear wheels 5, 5 separated rearward from the engine 2.
6, the engine 2 does not become hot due to the heat of the muffler 13 or the heat of its exhaust gas. Engine trouble, that is, deterioration or seizure of oil loaded in the engine 2 or occurrence of a vapor lock phenomenon due to evaporation of fuel or the like supplied into the engine 2 to generate steam or air. Can be eliminated. Moreover, the muffler 1
The exhaust port 13a of the exhaust port 3a is opened toward the lower side inside the machine body 1, and the exhaust gas from the muffler 13 is supplied to the exhaust port 1a.
Since the air is blown out toward the lower side in the machine width direction through 3a, for example, when the work assistant replenishes seedlings when performing a seedling planting operation using a rice transplanter, the worker assists the work assistant from the muffler 13. Exhaust gas does not hit directly, and loud exhaust noise is not generated around the work assistant, so that the working environment can be improved, and the exhaust gas from the muffler 13 is ridged. And the seedlings of the spare seedlings can be reliably prevented from withering.

[0007]

FIG. 4 shows a riding type rice transplanter as an example of a riding agricultural work machine. This riding type rice transplanter has an engine 2 mounted on an upper front part of a body 1 and a bonnet around the engine 2. 3 and a driver's seat 4 provided with a control seat 41 and a steering handle 42 at the rear upper portion of the body 1, and a pair of left and right front wheels 5 on both sides of the front of the body 1.
And a pair of right and left rear wheels 6 driven by the engine 2 are supported on both sides of the rear of the body 1. In addition, a seedling plant 8 is supported at the rear of the body 1 via a parallel link mechanism 7 having a top link 71 and a pair of left and right lower links 72 so as to be vertically movable. Reference numeral 8 denotes a plurality of planting transmission cases 81 to which rotational power is transmitted from the engine 2, a plurality of planting claws 82 rotatably supported by the transmission case 81, a seedling mounting table 83, and a plurality of floats 84. By rotating each of the planting claws 82 while moving the body 1 forward with the driving of the engine 2, each of the planting claws 8 is rotated.
At 2, the seedlings on the seedling mounting table 83 are sequentially taken out and planted on the paddy soil surface.

A step 9 for getting on and off the vehicle is provided below the driver's seat 4.
An entrance 91 to the pilot seat 41 provided in the driver's seat 4, a front step 92 extending forward from the entrance 91 and provided around the outer periphery of the hood 3, A rear step 93 also serving as a fender extending from the mouth 91 through the lower part of the control seat 41 to near the rear of the body 1; these steps 92, 9
3 to facilitate the seedling operation by the rice transplanter. For example, the remaining amount of the seedlings mounted on the seedling mount 83 decreases, When such a seedling connection operation is performed, a spare seedling is placed on the front step 92, and the spare seedling is picked up on the front step 92. Riding on the rear step 93, seedling connection work can be easily performed from the upper side of the seedling mounting table 83.

Further, an auxiliary step 10 extending from the vicinity of the entrance 91 to the rear end of the rear step 93 is provided on the outer side in the body width direction of the step 9 for getting on and off. A step 9 for getting on and off the step 9 for getting on and off the step 9 for getting on and off is provided on a lower outer side of the step 10 for getting on and off.

In the rice transplanter described above, the exhaust pipe 12 extending from the engine 2 is provided with a muffler 13 for silencing exhaust gas, and the muffler 13 is provided at an intermediate portion between the front and rear wheels 5 and 6 in the front and rear direction. The exhaust port 13a of the muffler 13 is opened diagonally downward and inside the body 1 while being disposed on the lower inside side of the step 9 for getting on and off.

Specifically, as shown in FIG. 1 to FIG. 3, two first and second support members for supporting the auxiliary stay 10 and the stepping plate 11 are provided at two intermediate positions in the longitudinal direction of the body 1. The stays 14 and 15 are arranged at predetermined intervals, and first and second brackets 16 and 17 each having a substantially U shape are fixed to the base end side of each of the stays 14 and 15 and the brackets 16 and 17 are fixed. , 17 are integrally attached to third and fourth brackets 18, 19 having a substantially U-shape fixed at predetermined intervals to the body 1 side via fixing bolts B to thereby form the first and second stays 14. , 15 are fixedly supported on the body 1 side.

As is apparent from FIG. 3, the first stay 14 extends outwardly in the fuselage width direction from a portion fixed to the fuselage 1 side, and curves so as to surround the outer periphery of the muffler 13. Curved portion 14a, a rising portion 14b extending diagonally outward and upward from the curved portion 14a, and a horizontal portion 14 extending horizontally outward from the upper end of the rising portion 14b.
c, and a lower portion 14d vertically extending downward from the distal end side of the horizontal portion 14c. Further, the second stay 15 includes a rising portion 15 that extends straight and diagonally upward from the portion fixed to the body 1 toward the outside in the body width direction.
a, a horizontal portion 15b extending horizontally from an upper end of the rising portion 15a, and a lower portion 15c extending vertically downward from the distal end of the horizontal portion 15b.

The first and second stays 14, 15
The auxiliary step 10 is fixedly supported on the upper side of each of the horizontal portions 14c and 15b formed at the same time, and the step pedestal 11 is fixed on the lower end side of each of the standing portions 14d and 15c.

Further, in the upper part of the muffler 13,
2 and 3, a horizontal frame 20 extending in the width direction of the airframe 1 and fixed to the airframe 1 is disposed, and the horizontal frame 20 is directed outward of the muffler 13. The mounting plate 21 is fixed via a plurality of fixing bolts B, the lower end of the mounting plate 21 is fixedly supported on the rising portion 14b of the first stay 14, and the muffler 13
A fixing bracket 22 having a substantially U-shape is fixed to an outer peripheral portion facing the mounting plate 21 through a plurality of fixing bolts B,
Further, while fixing the fixing bracket 22 and the mounting plate 21 via a plurality of bolts B and nuts N, the fixing bracket 22 is extended to the rear side of the muffler 13 and the extended end is By fixing the stays 14 and 15 and the horizontal frame 2 to the rising portions 15a of the second stays 15,
The muffler 13 is fixedly supported via the mounting plate 21 and the fixture 22 so that the exhaust port 13a is directed obliquely downward inside the body 1.

According to the above configuration, since the muffler 13 is fixedly supported by using the first and second stays 14 and 15 for supporting the auxiliary step 10 and the step platform 11, the structure becomes complicated. The muffler 13 can be fixedly supported with a simple configuration without causing the front and rear wheels 5, 6 which are separated rearward from the engine 2 in the front-rear direction. Since the engine 2 is fixedly supported by the stays 14, 15 and the like, the engine 2 is not heated to a high temperature by the heat of the muffler 13 or the heat of its exhaust gas. Causes various engine troubles due to high temperature, that is, deterioration or seizure of oil loaded in the engine 2 or the engine 2
It is possible to prevent the so-called vapor lock phenomenon in which the fuel or the like supplied into the inside of the engine 2 is evaporated to generate steam, air, or the like and stop the operation of the engine 2.

Moreover, the exhaust port 13a of the muffler 13
Is opened so as to be directed obliquely downward inside the airframe 1, and the exhaust gas from the muffler 13 is supplied to the exhaust port 1.
Since the air is blown obliquely downward on the inner side in the machine width direction via 3a, when performing the seedling planting operation by the rice transplanter, the work assistant supplies the seedling to the body 1 side. In such a case, it is possible to prevent the exhaust gas from the muffler 13 from directly hitting the work assistant and to prevent a loud exhaust sound from being generated around the work assistant, thereby improving the working environment. In addition, the exhaust gas from the muffler 13 is not blown out to a spare seedling stand or the like placed on the ridge or the like, and the seedlings of the spare seedling stand are surely withered. It can be prevented.
In the above embodiment, the riding type rice transplanter is shown as an example of the riding agricultural machine. However, the present invention is not limited to the rice transplanter and can be applied to a riding agricultural machine such as a tractor.

[0017]

As described above, according to the present invention, since the exhaust pipe and the muffler do not protrude outside the outer edges of both sides of the fuselage, for example, an operator such as a driver and a work assistant can supply the seedlings. When approaching the airframe to perform the operation, the farm work can be performed safely without contacting the exhaust pipe and the muffler which become hot.

[Brief description of the drawings]

FIG. 1 is a partially omitted plan view showing a main part of a riding agricultural work machine according to the present invention.

FIG. 2 is a side view of the main part.

FIG. 3 is a front view of the main part with some parts omitted;

FIG. 4 is a side view showing the overall structure of a riding type rice transplanter as an example of a riding agricultural machine.

[Explanation of symbols]

 Reference Signs List 1 body 2 engine 4 driver's seat 5 front wheel 6 rear wheel 12 exhaust pipe 13 muffler 13a exhaust port

Claims (1)

(57) [Scope of request for utility model registration] 1. An engine is mounted on a front part of a body supported by front wheels and rear wheels and provided with steps, a driver's seat is provided on a rear part, and a muffler is connected to the engine via an exhaust pipe. In a riding agricultural machine in which the muffler is arranged between the front wheel and the rear wheel, the exhaust pipe and the muffler are inside the outer edges of both sides of the body, are arranged below the step, and A riding agricultural working machine, wherein an exhaust port of a muffler is opened obliquely downward at a position between the two side portions.