JPH0341045Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a structure of a driving part of a riding agricultural machine such as a riding rice transplanter.

[Conventional technology]

In conventional riding agricultural machines, such as riding rice transplanters, the engine mounting base is elastically supported (i.e., rubber mounted) on the engine frame via anti-vibration rubber, and the engine is mounted on the engine mounting base and extended from the engine. The muffler was supported by the exhaust pipe.

[Problems to be solved by the invention] However, the above conventional configuration had the following drawbacks.

Since the exhaust pipe is supported by the engine in a cantilevered manner, and the mass of the tip of the exhaust pipe is increased due to the installation of the muffler, this can cause deterioration in engine performance and adverse effects on workers. Place the muffler outside the bonnet to avoid high temperatures inside the bonnet, or place the exhaust pipe and muffler outside the bonnet to prevent or suppress thermal effects on the equipment surrounding the engine. If the exhaust pipe has to be made longer due to
A large amount of stress is applied to the part where the exhaust pipe is attached to the engine. Therefore, in order to reliably and firmly support the exhaust pipe and muffler so that they do not fall off unexpectedly, the part where the exhaust pipe is attached to the engine needs to be strong enough to withstand the stress mentioned above. This led to increased costs. It is also possible to support the muffler on the engine frame, but in this case, it is necessary to attach the muffler to the engine frame via an elastic body in order to allow the vibration of the muffler due to engine vibration, which increases costs. .

An object of the present invention is to eliminate the above-mentioned conventional drawbacks.

[Means to solve the problem]

The characteristic structure of the driving part structure of the riding agricultural machine according to the present invention is that the engine mounting base is elastically supported on the engine frame via vibration-proof rubber, the engine is mounted on the engine mounting base, and the exhaust pipe extending from the engine is connected to the engine mounting base. The muffler to be connected is connected and supported by the engine mounting base via a connector.

[Effect]

Since the muffler is supported by the engine mounting base via the connector, the burden placed on the exhaust pipe by the muffler support surface can be reduced or eliminated.
Even if the exhaust pipe is long, stress acting on the part where the exhaust pipe is attached to the engine can be reduced.

Moreover, since the muffler is supported by a coupling that vibrates together with the engine, like the muffler, in other words, the engine mounting base, the muffler and coupling vibrate together, creating an elastic gap between the muffler and the coupling. There is no need for physical intervention.

Furthermore, the muffler is mounted on the engine mounting base, and compared to the engine, there is more freedom in the mounting form and position of the couplings, such as bolting or welding. The supporting structure of the muffler can be simplified, such as by allowing the muffler to be supported at the closest part.

[Effect of idea]

Therefore, according to the present invention, the muffler can be placed at a desired position, and even if the exhaust pipe is long, the muffler can be supported reliably and firmly without increasing costs, and the structure is simple. We are now able to provide the structure of the driving part of riding agricultural machines.

〔Example〕

Hereinafter, the present invention will be described in detail based on drawings showing embodiments thereof.

As shown in FIG. 4, a link mechanism 6 which can be vertically driven and oscillated by a hydraulic cylinder 5 is connected to the rear of a wheeled traveling body having a driving part 1, a driving part 2, a spare seedling stand 3, etc. The seedling planting device 4 is connected to the seedling planting device 4 so as to be operable up and down, and the power is transmitted from the self-propelled body to the seedling planting device 4, thereby constructing a riding rice transplanter which is an example of a riding agricultural machine according to the present invention. There is.

The engine 7, which is the main part of the driving unit 1, has a first
As shown in FIGS. 3 to 3, the engine frame 8 is mounted on an engine mounting base 10 which is elastically supported via anti-vibration rubber 9 to an engine frame 8 extending from the front of the fuselage. Specifically, a cap nut 12 fixed at an appropriate position within a pair of U-shaped channel members 11 welded to the upper surface of the base 10 and arranged in parallel is inserted into the mounting hole of the engine 7. The engine 7 is mounted on the base 10 by screwing and tightening the bolts 13.

Further, a muffler 14 is provided below the base 10.
One end of the muffler 14 is connected and supported by an exhaust pipe 15 extending from the engine 7, and the other end of the muffler 14 is connected to the base 10 via a connector 16. Supported.

When the mounting structure of the driving part has such a configuration, as described above, the vibration of the engine 7 is absorbed by the vibration isolating rubber 9, and the exhaust pipe 15 functions as a flexible tube, so that the engine 7
vibrations are not transmitted to the aircraft. Also, muffler 1
4 is disposed below the engine mounting base 10, there is no need to dispose a muffler at the forefront of the fuselage.

In addition, when the channel material 11 for attaching the engine 7 is welded to the upper surface of the base 10 as in this embodiment, the rigidity of the base 10 can be improved, and the weight can be reduced by making the wall thinner. In addition to this, the vibration absorption effect of the base 10 is also increased.

Furthermore, as shown in FIG. 3, if spaces are formed between the engine 7 and the base 10, between the base 10 and the muffler 14, and below the muffler 14, the engine 7 and the muffler 14 can be The effect of cooling the engine 7 and the muffler 14 by diffusing the heat radiated from the space via the space can be expected.

[Brief explanation of the drawing]

The drawings show an embodiment of the structure of the driving part of a riding agricultural machine according to the present invention, and FIG. 1 is a side view showing the main parts, FIG. 2 is a plan view showing the main parts, and FIG.
FIG. 4 is a side view showing the entire agricultural machine. 7...Engine, 8...Engine frame, 9
... Anti-vibration rubber, 10 ... Engine mounting base, 1
4...Muffler, 15...Exhaust pipe, 16...Connector.

Claims (1)

[Scope of utility model registration request] An engine mounting base 10 is elastically supported on the engine frame 8 via a vibration isolating rubber 9, an engine 7 is mounted on the engine mounting base 10, and a muffler 14 connected to an exhaust pipe 15 extending from the engine 7 is connected to a connector 16. A driving part structure of a riding agricultural machine, which is connected and supported to the engine mounting base 10 via.