JPH0538976Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a muffler attachment device for a riding mobile agricultural machine such as a riding seedling planter, a riding seeding machine, or a riding fertilizer applicator.

(b) Prior Art Conventionally, in a passenger mobile agricultural machine in which the exhaust port was installed on the opposite side of the engine's output pulley, when a muffler was attached to the exhaust port, when the machine was driven into a field,
Even if the muffler is placed in a horizontal position, there is a risk that it will be buried in the field near the ridge, so as shown in Figure 4,
The steps disposed on the side of the engine had to protrude above the steps on the drive section, which increased costs and caused obstacles to running when carrying seedlings, fertilizers, seeds, etc.

Furthermore, when attempting to house the muffler in the bonnet, it is undesirable in appearance to have only the muffler part of the bonnet protrude, resulting in problems such as the overall size of the muffler being increased.

(d) Means for solving the problem As mentioned above, the present invention mounts the engine in the engine room at the front of the aircraft, provides an exhaust port on the side opposite to the output pulley of the engine, and installs an exhaust port on both sides of the engine. In a riding mobile agricultural machine provided with a step leading to the driving section, a muffler is provided in the front part of the output pulley facing downward, and the muffler and the exhaust port of the engine are connected by an exhaust pipe that bypasses the rear part of the engine. The muffler can be mounted vertically in the space in front of the output pulley of the engine so as to exhaust air downwards, thereby avoiding the need for the side steps to become high or the bonnet to be large, thus solving the above-mentioned problems. .

(e) Function The exhaust gas from the engine passes through the exhaust pipe that bypasses the rear part of the engine and is discharged from the muffler installed in front of the output pulley, so that the muffler does not interfere with power transmission and is located inside the side steps in the vertical direction. It can be easily stored in the bonnet, and there is no need to make the step higher.

(F) Embodiment To explain an embodiment of the present invention about a riding rice transplanter shown in the drawings, reference numeral 1 is an engine mounted on a frame 3 protruding forward from the bottom of the step 2 of the operating section, and covered by a bonnet 5. The exhaust port 6 is connected to the output pulley 8 attached to the output shaft 7.
The muffler 10 is disposed in a space in front of the output pulley 8 in a vertical position with the exhaust port facing downward, and is attached to the engine 1 by brackets 9a and 9b.

In addition, a manifold 1 connected to the exhaust port 6
1 opens on a carburetor 12 provided at the rear of the engine 1, and the opening of this manifold 11 is an exhaust pipe 13 that bypasses the rear of the engine 1.
A wind guide heat shield plate 15, which is connected to the upper part of the muffler 10 and has a U-shaped cross section, is fitted to the rear part of the manifold 11 and the exhaust pipe 13, and is connected to the exhaust pipe 13 with bolts 16, 16. It is screwed onto the manifold 11 and the exhaust pipe 13 to continuously cover both upper and lower rear surfaces and the rear surface thereof.

Further, the fuel tank 17 is placed on a bottom plate 20 that protrudes forward from the holding cylinder 18 of the steering shaft, and a wind guide plate 21 that covers the engine 1 is fixed to the front end of the bottom plate 20. A series of steps 22 are provided on both sides and at the front of the drive section, which step 22 is similar to the step 2 of the drive section.
It is at the same height as.

Reference numeral 23 denotes an instrument panel, and 25 denotes a ventilation section consisting of a number of ventilation holes provided on both sides of the bonnet 5.

In the above-mentioned riding rice transplanter, the exhaust of the engine 1 is provided through the manifold 11 and the exhaust pipe 13.
The sound is then muffled by the muffler 10 and discharged downward.

Since the muffler 10 is disposed in the space in front of the output pulley 8, it can be installed in the bonnet 5 with plenty of room in the vertical direction, and does not protrude downward and eliminates the need to make the bonnet large. Step 22 is replaced by Step 2 of the operation section.
It can be configured on substantially the same plane.

Furthermore, the operation of the transmission parts such as the output pulley 8 of the muffler 10 and the belt stretched thereon will not be obstructed.

In addition, the heat shielding air guide plate 15, the bottom plate 20, and the air guide plate 21 block heated air to prevent the operating section from becoming high temperature, and the heated air moves to both sides and is discharged to the side. to encourage

(g) Effect of the invention As mentioned above, the invention mounts the engine 1 in the engine room at the front of the aircraft, provides the exhaust port 6 on the side opposite to the output pulley 8 of the engine 1, and installs the exhaust port 6 on both sides of the engine 1. In a riding mobile agricultural machine provided with a step 22 leading to the driving section, a muffler 10 is provided in front of the output pulley 8 facing downward, and the muffler 10 and the exhaust port 6 of the engine 1 are connected to the engine 1.
The rear part of the engine 1 is connected by a detoured exhaust pipe 13, which eliminates the need for the step 22 on the side to protrude upwards unlike in the case where a muffler is provided on the exhaust port side of the engine 1, and prevents malfunction of the output pulley 8. The bonnet 5 can be provided in the bonnet 5 in the vertical direction without being in the vertical direction, and the bonnet 5 can be made smaller and the cost can be reduced.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a plan view of the front part of the riding rice transplanter, FIG. 2 is a side view of the same, FIG. 3 is a perspective view of the main parts, and FIG. 4 is a side view of a comparative example. 1... Engine, 5... Bonnet, 8... Output pulley, 10... Muffler, 11... Manifold, 13... Exhaust pipe, 22... Step.

Claims (1)

[Scope of utility model registration request] In a passenger mobile agricultural machine, an engine 1 is mounted in the engine room at the front of the machine, an exhaust port 6 is provided on the opposite side from the output pulley 8 of the engine 1, and steps 22 leading to the driving section are provided on both sides of the engine 1. , a muffler 10 is provided in front of the output pulley 8 facing downward, and the muffler 10 and the engine 1
A muffler mounting device for a riding mobile agricultural machine, characterized in that the exhaust port 6 of the engine 1 is connected to the exhaust port 6 of the engine 1 by an exhaust pipe 13 bypassing the rear part of the engine 1.