JPS585077Y2 - Heat shielding device for the engine room of a tractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a heat shielding device for an engine compartment of a tractor to prevent heat generated by the engine from spreading outside the engine compartment within the bonnet.

In tractors that have an engine room formed in the bonnet to accommodate the engine, and adjacent to the engine room, there is a housing section for the fuel tank, battery, etc., in order to protect the fuel tank, battery, etc. from the heat generated by the engine. Conventionally, some kind of heat isolation means has been provided between the engine room and a housing part such as a fuel tank.

By the way, a heat shield plate is simply hung from the back side of a bonnet top plate that can be rotated to open and close using one end as a fulcrum, so as to be interposed between the engine compartment and a storage area such as a fuel tank. In order to prevent the opening and closing of the bonnet top plate from becoming a problem, and to eliminate noise caused by vibrations at the lower end of the heat shield, it is necessary to shorten the hanging length of the heat shield. Therefore, the heat insulation of the engine room was incomplete, and the actual situation was that the fuel tank etc. could not be sufficiently protected from the heat generated by the engine.

Therefore, such a heat shield plate has generally been installed upright on the engine side so as to face the inside of the bonnet from the engine side.

However, when a long heat shield is installed on the engine side in this way, the heat shield gets in the way and makes engine inspection and maintenance difficult. It has the disadvantage that it has to be made from parts, and special parts are required for installation, making it difficult to install and process, and inevitably making it heavy and expensive.

In view of the drawbacks of the above, the present invention has been developed by suspending a flexible heat shield plate that reaches the top surface of the clutch housing from a reinforcing plate that is fixed and suspended from the back of the bonnet top plate.
The above-mentioned reinforcing plate and flexible heat shield plate can completely isolate the heat between the engine room and other accommodation areas adjacent to it, and it is also possible to not only open and close the bonnet top plate but also to inspect and maintain the engine. Even if the flexible heat shield comes into contact with other parts, it will not damage the contact parts, and furthermore, the contact noise from that part due to the vibration of the aircraft will be reduced. It is an object of the present invention to provide a heat shielding device for an engine tractor, which is lightweight and inexpensive, and can prevent the occurrence of heat.

To explain the structure of the present invention with reference to an embodiment shown in the drawings, 1 is a bonnet of a tractor, 2 is a top plate of the bonnet, and this bonnet top plate 2 is connected to a fulcrum 3 at a front end.
It can be opened and closed up and down with the center at the center.

An engine room 4 is formed in the front part of the bonnet 1, and an engine 5 is housed within the engine room 4.

Further, at the rear of the engine room 4, a clutch housing 6 is disposed in the lower part thereof, and this clutch housing 6 is connected to the engine 5 so as to form one body.

7 is a fuel tank, and this fuel tank 7 has a buffer material 8
It is installed on the clutch housing 6 via.

9 is a steering handle; 10 is a panel thereof; the opening/closing end of the bonnet top plate 2 is supported by the panel 10;

Reference numeral 11 denotes a bonnet reinforcing plate, and this bonnet reinforcing plate 11 is fixed to the back surface of the bonnet top plate 2 on three sides, the upper edge and the right and left side edges, thereby reinforcing the bonnet and when the bonnet top plate 2 is closed. And engine 5 and fuel evening? A fixed vertical position is taken so as to intervene between the two.

Reference numeral 12 denotes a flexible heat shield plate made of a rubber plate or the like, and this flexible heat shield plate 12 is suspended from the lower end of the bonnet reinforcing plate 11, and when the bonnet top plate 2 is closed, its lower end is connected to the clutch. It has a hanging length that reaches the upper surface of the housing 6.

Note that 13 is a radiator, and 14 is a cooling fan.

In the configuration as described above, when the bonnet top plate 2 is closed, the bonnet reinforcing plate 11 on the back side and the flexible heat shield plate 12 hanging from it are interposed between the engine 5 and the fuel tank 7, and the flexible Since the lower end of the flexible heat shield plate 12 contacts the upper surface of the clutch housing 6 and follows the shape of the upper surface, the space between the engine room 4 and the accommodation section behind it is completely shielded, and the fuel tank 7 is completely shielded from the engine room 4. etc. are not exposed to hot air and are sufficiently protected.

Furthermore, when opening and closing the bonnet top plate 2, even if the flexible heat shield plate 12 comes into contact with the engine 5, the fuel tank 7, etc., there will be no contact damage to them, and moreover, it can be flexibly deformed. Therefore, there is no problem when opening and closing the bonnet top plate 2, and contact noise is not generated from that part due to vibration of the aircraft, and the heat shield plate is integrally fixed to the bonnet. Since the bonnet and heat shield plate can be opened and closed together, they do not get in the way when inspecting and servicing the engine, and since the bonnet and heat shield plate mutually reinforce each other, they are lightweight and inexpensive components, and their installation and processing are extremely easy.

Note that the flexible heat shield plate 12 hanging down from the lower end of the bonnet reinforcing plate 11 can be easily interposed even in a narrow place, so that heat shielding of such a place is also easy.

In short, the present invention provides a tractor in which an engine room is formed in the front part of the bonnet to accommodate the engine, a clutch housing is arranged in the rear lower part, and a fuel tank etc. are arranged above the engine room. A bonnet reinforcing plate interposed between the engine and the fuel tank, etc. is fixedly and vertically provided on the back surface of the bonnet top plate, and a flexible heat shield plate that reaches the upper surface of the clutch housing is suspended from the bonnet reinforcing plate. Therefore, the bonnet reinforcing plate and the flexible heat shield plate can completely isolate the heat between the engine room and other accommodation areas adjacent to it, and not only can the bonnet top plate be opened and closed, but also the engine can be inspected. There is no problem with maintenance, and even if the flexible heat shield comes into contact with other parts, the contact part will not be damaged, and the contact part will not be damaged by the vibration of the aircraft. It is lightweight, inexpensive, and has extremely useful practical effects that can prevent noise from occurring.

[Brief explanation of drawings]

The drawings show an embodiment of the heat shielding device for the engine room of a tractor according to the present invention, and FIG. 1 is an overall side view of the tractor, and FIG. 2 is a longitudinal sectional side view of the main parts. In the figure, 1 is a bonnet, 2 is a top plate of the hood, 4 is an engine room, 5 is an engine, 6 is a clutch housing, 7 is a fuel tank, 11 is a bonnet reinforcing plate, and 12 is a flexible heat shield plate.

Claims (1)

[Scope of utility model registration request] For tractors that have an engine room formed in the front part of the bonnet to accommodate the engine, and a clutch housing located at the lower rear of the engine room and a fuel tank etc. installed above it, there is a , characterized in that a bonnet reinforcing plate interposed between the engine and the fuel tank, etc. is fixed and vertically provided, and a flexible heat shield plate that reaches the upper surface of the clutch housing is suspended from the bonnet reinforcing plate. A heat shielding device for the engine room.