JPH0417773Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cooling structure for a driver's seat in a working machine such as a combine harvester, which is equipped with a muffler below the driver's seat.

[Prior art]

Conventionally, a working machine in which the engine is mounted below the driver's seat is known as a combine harvester, and the muffler of this device is not placed in front of the engine, but is placed behind the engine so that it does not get in the way of the paddy receiving part. It is generally known that the system is installed in the lower part of the engine room.

[Problems that this invention attempts to solve]

In the above-mentioned conventional device, since the muffler is located in the engine room, the indoor temperature rises, the ambient temperature around the driver's seat becomes high, making it difficult to drive, and the muffler tends to overheat when operated for a long time. Additionally, since the muffler is located in the engine room, when the engine is stopped and the cover is opened to perform maintenance on the engine equipment, the human body is likely to come into contact with the hot muffler, which poses a risk of burns.

Furthermore, according to Japanese Utility Model Application Publication No. 57-165513, as a silencer mounting device for a multi-wheeled agricultural vehicle, a mounting frame body whose upper surface is covered with a removable cover is provided on one side of the engine room, and this cover is also provided. A device has been proposed in which a muffler main body is removably mounted on a lower mounting frame of a muffler.

However, this device is related to a multi-wheel agricultural vehicle with a relatively high vehicle height, and a wide space is formed at the rear of the engine, and a muffler is placed in this area. The present invention does not disclose a structure to be placed in a thin floor area between a driver's seat and an operation unit of a vehicle.

Therefore, in order to eliminate these drawbacks, the present invention has been developed by arranging the muffler in a compact manner under the deck frame with the operating section at the front of the aircraft outside the engine room, which improves cooling of the muffler, safety during maintenance, and comfortable driving comfort. The purpose of the present invention is to provide a muffler mounting device for the driver's seat of a working machine that is optimized for use as a combine harvester with an inexpensive and highly rigid configuration.

[Means for solving problems]

In order to achieve the above object, the present invention provides a muffler mounting device for the driver's seat of a working machine, which includes an engine mounted on the front part of the machine base having a crawler at the bottom;
In this traveling work machine, a driver's seat is arranged above the engine, a deck frame is extended in front of the machine platform and covered with a deck plate, and an operating section is provided in front of the deck frame, and the lower surface of the base of the deck frame is provided. A recess is formed in the recess, a heat shield plate is placed at the lower part of the deck frame in this recess and a predetermined width in front and rear of the recess, a muffler is placed horizontally in this recess, the outer part of the fuselage is covered with a deck cover, and the deck frame is The lower surface is open to provide an inlet for cooling air to the muffler.

〔Example〕

Next, embodiments of the present invention will be described in detail based on the drawings.

1 is a combine harvester, which has a reaping part K, a threshing part D on one side of a machine base 2 with a crawler C, a driver's seat U on the other side, and a paddy receiving part M equipped with a grain tank T behind it. Each has their own.

The configuration of the driver's seat U is such that the cross section extending forward from the machine base 2 is an inverted concave or inverted U shape, and a deck plate 4 is stretched over the top of two deck frames 3. An operating section 6 having operating devices such as steering levers 5, 5 and the like is installed upright in front of the operating section 6.

An engine 7 is placed behind these, and the engine 7 is centered around a fulcrum 8 on the outside and below the machine base 2, as shown in FIG. It consists of a covered seat section 11, etc.

Reference numeral 12 denotes a muffler connected to the engine 7 through an exhaust pipe 13, and the muffler 12 is fitted horizontally into a recess 14 made by partially cutting out the lower end of the base of the deck frame 3, with its exhaust port facing rearward. , muffler 1
2 does not protrude significantly downward, and the deck height H is made as small as possible.

Reference numeral 15 denotes a heat shield plate, which extends along the shape of the recessed portion 14 and has a predetermined width in front and behind it, and is attached to the deck frames 3, 3.
By welding and fixing to the lower end, the heat of the muffler 12 is prevented from reaching the deck plate 4, and in particular, the deck frame has a free end and an operating system such as a link such as the operating lever 5 is installed inside the deck frame. The deck frame 3 is reinforced to prevent the deck frame 3 from swinging laterally, and is provided to increase the overall rigidity of the deck frame 3.

Reference numeral 16 denotes a deck cover attached to the deck frame 3 using fittings 17, 17, etc. so as to cover the front and outer surfaces of the deck frame 3. In terms of its side view shape, what comes behind it is the deck frame 3 and the muffler 12. It has a wide side plate part 18 that covers the whole part, and the part in front of this part is formed into a small width h that covers the side surface of the deck frame 3, which has its lower part cut out to form an outside air intake space 19.

As a result, the front part of the muffler 12 is widely exposed, and as the aircraft 2 moves forward, outside air is well taken in from the outside air intake space 19 to cool the muffler 12, and when the aircraft is stopped, heat is radiated widely from this part, so the muffler 12 Depth board 4 without overheating
This will prevent overheating.

Reference numeral 20 denotes a U-shaped footrest, which is formed in the shape of a wide plate and is fixed to the deck frame 3 with a deck cover 16 in the outside air intake space 19 immediately before the muffler 12. By providing the lower end of this footrest 20 at approximately the same level as the lower end of the muffler 12 or slightly lower than this, the operating section 6 can be inserted into the deck cover 16 without interfering with the intake of outside air into the muffler 12. This prevents the human body from coming into contact with the heated muffler 12 when adjusting the operating system such as the links incorporated below.

Next, referring to FIGS. 4 to 8, reference configurations will be explained. 30 shown in FIGS. 4 and 5 is the cover 10.
This is a hook that engages with a locking tool 2a of the fuselage 2 provided at Can be opened outward. Then, when the sheet 9 is returned to its original position,
Since the hook 30 is pressed and fixed on the bottom surface of the handle, it is safe because the hook 30 will not come off unexpectedly due to vibration or the like, and there will be no chance of forgetting to engage the hook.

In FIG. 6, 7a is the fuel tank of the engine 7, and the lever guide plate 33, which is fixedly attached to the machine base 2 and separate from the cover 10 that opens and moves, is a rear rising inclined surface 32 of the threshing operation lever 31. An example is shown in which it is installed in the cavity formed below.

With this configuration, the inconvenience caused by the sideward tilting of the fuel tank 7a can be eliminated, and the space can be utilized rationally and effectively, thereby promoting miniaturization of the aircraft body.

In addition, in FIGS. 7 and 8, a light 34 provided on the front of the operating section 6 is a light 34 that illuminates the front of the aircraft.
4a is provided so as to be able to partially reflect the light 34a backwards, and a part of the light 34b of the light 34a illuminates the rear foot area at the same time, in order to save on the light source and facilitate operation.

As shown in FIGS. 8 and 2, an oiling tool 36 is installed between the link systems 35, 35 of the steering levers 5, 5, which pass downward through the inside of the operating section 6. It is provided so that the presence of the oiling tool 36 that is used from time to time can be conveniently confirmed without having to look for it.

[Effect of idea]

The muffler mounting device for the driver's seat of a working machine according to the present invention has an engine at the front of a machine base having a crawler at the bottom, a driver's seat above the engine, and a deck frame extending in front of the machine base. At the same time, in a traveling working machine that is covered with a deck board and has an operating section in front of the deck frame, a recess is formed on the lower surface of the base of the deck frame, and a shield is provided at the lower part of the deck frame between this recess and a predetermined width in front and rear of the recess. A hot plate is placed, a muffler is placed horizontally in this recess, the outside of the aircraft is covered with a deck cover, and the lower surface of the deck frame is opened to open an inlet for cooling air to the muffler. , the following effects can be achieved.

B. The muffler is housed with the upper part fitted into the recess formed on the bottom surface of the base of the deck frame, and the front of the bottom surface of the deck frame is open.
When the work equipment moves, air is admitted to effectively cool the muffler.

(b) Heat directed upward from the muffler is blocked by the heat shield plate and the deck frame, and the deck cover is also effectively cooled by the air flowing below the deck plate.

C. A heat shield plate is fixed along the shape of a recess provided at the bottom of a deck frame that extends to the front of the machine base and has an operating section on its free end, and a deck cover is attached to the outside of the machine body. Since it is covered, the deck frame is reinforced as a whole and can sufficiently withstand loads acting from above and from the sides.

(2) Since the upper part of the muffler is fitted into the recess formed on the lower surface of the base of the deck frame, the thickness of the deck frame can be made thinner, and the aircraft body can be made smaller and lighter.

E. Therefore, according to the muffler mounting device of the present invention, it is possible to provide a traveling working machine such as a combine harvester with high safety and comfort, in which the engine is installed in the front part of the machine base and the driver's seat is arranged above the engine. be able to.

[Brief explanation of the drawing]

Fig. 1 is a side view of the main parts of the combine harvester according to the present invention, Fig. 2 is a perspective view showing the configuration of the driver's seat, Fig. 3 is a sectional view showing the assembly structure of the muffler part, and Fig. 4 is a perspective view of the seat part. Figure 5 is a front operational view showing the state in which the cover in Figure 4 is opened, Figure 6 is a perspective view of the main part showing another example of fuel tank installation, and Figure 7 is a diagram showing the installation of the light on the operating section. FIG. 8 is a rear perspective view of the operating section. FIG. 9 is an overall perspective view of the combine harvester. 1... Combine harvester, 2... Machine stand, 3... Deck frame, 4... Deck plate, 6... Operation section, 7... Engine, 10... Cover, 12... Muffler, 13
...exhaust pipe, 14 ... recess, 15 ... heat shield plate, 1
6...Deck cover, 18...Wide plate part, 19...
...Outdoor air intake space, 20...footrests.

Claims (1)

[Claims for Utility Model Registration] An engine is placed in the front part of a machine base having a crawler at the bottom, a driver's seat is arranged above the engine, a deck frame is extended in front of the machine base, and it is covered with a deck board, Further, in this traveling working machine having an operating section in front of the deck frame, a recess is formed on the lower surface of the base of the deck frame, and a heat shield plate is arranged at the lower part of the deck frame at a predetermined width in front and behind the recess, A muffler mounting device for a driver's seat of a working machine, in which a muffler is arranged horizontally in this recessed part, the outer side of the machine body is further covered with a deck cover, and the lower surface of the deck frame is opened to open an inlet for cooling air to the muffler.