JPS602973Y2 - Cabin heating system for earthmoving machines - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a heating device for a driver's cabin that is installed in an earthmoving machine such as a backhoe.

Conventionally, in this type of system, the engine compartment containing the engine and the driver's cabin are not adjacent to each other, but are located separately, and when trying to heat the cabin with engine heat, the engine compartment and driver's cabin are separated. It was necessary to connect a blower pipe to the engine to send hot air into the cabin.

Therefore, the heating device as a whole has the disadvantage of being complicated and large, resulting in high cost.

Therefore, the present invention is constructed so that the engine compartment is located adjacent to the rear of the driver's cabin, and an adjustable lid that can be opened and closed is provided on the rear wall of the cabin to guide hot air from the engine compartment into the cabin. To provide a heating device for a cabin for an earthmoving machine, which has a simple structure and can easily adjust the indoor temperature while eliminating the disadvantages of the above.

The embodiments of the present invention will be described in detail below with reference to illustrative drawings. 1 is a machine frame body of an excavator with a crawler-type traveling device 2 on the lower side.
It is equipped with a cabin 5 that covers the driver's seat 3, control levers 4, etc. on the top.

6 is an engine located at the rear of the cabin 5, and 7 is a condenser installed in the engine 6.

The engine 6 and condenser 7 are covered by an engine cover 8 and are located adjacent to the rear of the cabin 5.

8-a is an opening provided in the front wall of the engine cover 8.

9 is an engine compartment, and 10 is an upper exhaust fan provided at the top of the engine cover 8. The air is sucked in from the cooling air intake part 11, and after cooling the engine, it becomes hot air and a part of the fan is discharged upward. ing.

Further, reference numeral 12 denotes a blower fan provided in an opening 8-a of the front wall of the engine cover 8 in the engine compartment 9, which blows hot air inside the engine compartment to the outside of the engine cover 8 from the opening 8-a. .

In addition, as shown in FIG. 3, there is an opening 13 in the cabin rear wall 13 at the front in the direction in which the hot air travels, which is to serve as a hot air blowing path.
-a is provided with an adjustment lid 14 that can be opened and closed.

15 is a gap formed between the engine cover 8 and the cabin rear wall 13 as a passage for discharging hot air, and this also has the function of preventing vibrations from the engine compartment 9 from being transmitted to the cabin 5. The right end of the passage 15 is closed 15-1, and the left end is communicated with the outside of the aircraft body, and the opening 8- of the engine cover 8 is connected through the - part of the passage 15.
a and an opening 13-a in the rear wall of the cabin are in communication.

Therefore, when the engine 6 is started, the engine compartment 9 gradually becomes overheated.

When heating the inside of the cabin 5 with hot air from the engine room, the adjustment lid 14 is opened and the hot air sent out by the blower fan 12 is introduced into the cabin to raise the temperature inside the cabin.

Further, since the adjustment lid 14 can be opened and closed (arrow A, opening), it can be adjusted appropriately, and when it is fully closed, the hot air sent out by the blower fan 12 is discharged to the outside from the passage 15.

When the adjustment lid 14 is opened to blow hot air into the cabin 5, outside air is sucked in from the same passage 15 due to the negative pressure when the hot air is blown, and fresh air can also be blown into the cabin 5 at the same time.

As shown in the above embodiments, according to the present invention, the engine compartment is located adjacent to the rear of the driver's cabin, and hot air from the engine compartment is guided into the cabin while an adjustable lid that can be opened and closed is provided on the rear wall of the cabin. Because it is constructed in such a way that there is no need to install a special ventilation pipe between the engine room and the cabin like in conventional models, an adjustment cover is simply installed on the rear wall of the cabin, so the structure does not become large and can be easily constructed. be done.

In addition, since the amount of hot air can be easily adjusted, the inside of the cabin can be kept at a comfortable temperature at all times.Furthermore, when blowing hot air into the cabin, outside air is sent from the passageway along with the hot air at the same time. It is also possible to supply fresh air into the cabin, and therefore the heating device as a whole can be made smaller and lighter, and it has excellent effects such as being able to work efficiently.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall side view of an earth-moving machine equipped with the device of the present invention, Fig. 2 is a plan sectional view of the main parts of the invention, and Fig. 3 is the same. It is a front view. 5...Cabin, 9...Engine compartment, 13...Rear wall, 14...Adjustment lid.

Claims (1)

[Scope of utility model registration request] A gap is maintained between the rear wall of the cabin and the engine cover for vibration isolation, which also serves as a passage for discharging hot air, and the engine compartment is installed adjacent to the rear of the cabin. A cabin in a civil engineering machine in which an opening in the rear wall communicates with an opening in the engine cover, an adjustable lid that can be opened and closed is provided in the opening in the rear wall of the cabin, and a blower fan is provided in the opening in the engine cover. heating equipment.