JP2022044924A - Work platform - Google Patents

Abstract

To make it possible to efficiently air-condition the inside of a cabin, which is mounted on a traveling vehicle body, using power of an engine.SOLUTION: A work vehicle has an air-conditioner installed in a narrow space 10a formed in a rear part of a roof 10 of a cabin K mounted on a traveling vehicle body. Herein, an evaporator 69 that cools draft, and a heater core 70 that warms draft are stored in an air-conditioning unit 66. A blower 72 that blows the air-conditioning unit 66 is disposed on a flank. A water valve 73 that adjusts a flow of hot water to be fed to the heater core 70 inside the air-conditioning unit 66 is disposed on an opposite side of the air-conditioning unit 66 with respect to the blower 72.SELECTED DRAWING: Figure 5

Description

The present invention relates to an air conditioner for air-conditioning the inside of a cabin of a work vehicle such as a tractor.

The tractor with a cabin is equipped with an air conditioner that regulates the room temperature for workers in the cabin.

For example, in a conventional tractor, a space for mounting an air conditioner unit is provided at the rear of the roof that covers the cabin while avoiding the narrow cabin, and the air conditioner unit is driven by the power of the engine to air-condition the inside of the cabin (for example, patent). See Document 1).

Japanese Unexamined Patent Publication No. 2014-166810

The details of how the air conditioner unit described in the above-mentioned publication is configured are not described.

An object of the present invention is to enable efficient air conditioning in a cabin provided on a traveling vehicle body by the power of an engine.

The above-mentioned problem of the present invention is solved by the following technical means.

According to the first aspect of the present invention, in a work vehicle in which an air conditioner device is mounted on a narrow space portion 10a formed at the rear of the roof 10 of the cabin K provided on the traveling vehicle body, an air conditioner 69 for cooling the ventilation and a heater core 70 for warming the ventilation are air-conditioned. A blower 72 that is housed in the unit 66 and blows air to the air conditioner unit 66 is provided on the side portion, and a water valve 73 that adjusts the flow rate of hot water sent to the heater core 70 in the air conditioner unit 66 is provided with the air conditioner unit 66 with respect to the blower 72. It is a work vehicle characterized by being installed on the opposite side.

The invention according to claim 2 is the work vehicle according to claim 1, wherein the air conditioner unit 66 is provided with a water valve 73 on one side on the left and right sides and an air mix door 76 on the opposite side on the left and right sides.

The third aspect of the present invention is described in claim 2, wherein the wires W1 and W2 for connecting the control panel 67 provided on the front side of the cabin K to the water valve 73 and the air mix door 76 are arranged on the left and right inside of the cabin K. It is a work vehicle.

According to the invention of claim 1, the work of boarding the cabin K and performing a maneuvering operation by accommodating the air conditioner unit 66, the blower 72, and the air conditioner device of the water valve 73 in the narrow space portion 10a at the rear of the roof 10 of the cabin K. Since the water valve 73 that adjusts the flow rate of hot water to the heater core 70 of hot water is provided away from the air conditioner unit 66 that houses the cold evaporator 69 and the hot heater core 70 via the blower 72 without obstructing the control view of the person. , There is no risk that the water valve 73 will malfunction due to the effects of overheating and cooling.

In the invention of claim 2, since the water valve 73 for adjusting the hot water flow rate and the air mix door 76 for adjusting the temperature of the air flowing into the room are provided on the left and right sides of the air conditioner unit 66, adjustment and maintenance can be easily performed independently. Become.

According to the third aspect of the present invention, it becomes easy to arrange the wires W1 and W2 in the cabin K which are connected to the water valve 73 and the air mix door 76 provided after the cabin K from the control panel 67 provided in front of the cabin K.

It is external side view of the tractor of embodiment in this invention. It is external front view of the tractor of embodiment in this invention. FIG. 3 is an external plan view of the tractor according to the embodiment of the present invention. It is an external rear view of the tractor of embodiment in this invention. It is a top perspective view which opened the roof of the cabin of embodiment of this invention. FIG. 3 is a plan sectional view of the roof of the cabin according to the embodiment of the present invention.

As an embodiment of the present invention, first, the configuration of the cabin K with a tractor as a work vehicle will be described.

In this embodiment, the traveling direction of the tractor is referred to as front, and the direction intersecting the traveling direction is referred to as left and right.

1 to 3 show a tractor E equipped with a cabin K.

The front part of the tractor E is provided with a bonnet 1, and the rear side of the bonnet 1 is provided with a cabin K that surrounds the control space surrounding the driver's seat 24 of the operator. The power of the engine 2 arranged in the bonnet 1 drives a pair of left and right front wheels 3, rear wheels 4, a work machine mounted on the rear part of the machine body, and an air conditioner device. At the rear of the tractor E, a working machine connecting portion 60 for connecting the working machines is provided.

The cabin K is provided with an opening / closing door 5 and a side glass 6 on the side surface for an operator to get on and off, a windshield 7 at the front, and an upper rear glass 8a and a lower rear glass 8b at the rear. The opening / closing door 5, the side glass 6, the windshield 7, the upper rear glass 8a, and the lower rear glass 8b are transparent glasses, respectively.

An air conditioner unit 66 is provided in the upper rear part of the cabin K. The lower part of the air conditioner unit 66 is covered with a cover 9, and the upper side of the driver's seat 24 and the upper part of the air conditioner unit 66 are covered with the roof 10. The air conditioner unit 66 is provided below the narrow space portion 10a formed at the rear portion of the roof 10. The roof 10 is made of resin.

Next, the air conditioner device housed in the narrow space portion 10a of the roof 10 will be described.

This air conditioner is provided so as to project to the rear of the cabin K in the narrow space portion 10a of the roof 10 located above the cabin K. Therefore, the air conditioner does not become an obstacle to see the rear periphery of the operator sitting in the driver's seat 24 in the cabin K.

A ceiling panel 41 formed along the roof 10 is arranged at the upper end of the cabin K. A space 47 is formed between the ceiling panel 41 and the roof 10. The distribution ducts 74 distributed to the left and right toward the front from the air conditioner unit 66 and the left and right ducts 75L and 75R arranged to the left and right of the cabin K are connected. That is, a pair is arranged on each of the left and right sides of the ceiling of the cabin K. A plurality of outlets for blowing air flowing through the left and right ducts 75L and 75R into the cabin K are formed on the lower surface side, and face the indoor side of the cabin K from the ceiling panel 41. Therefore, the air from the air conditioner unit 66 can flow to the indoor side of the cabin K.

The air conditioner unit 66 has a built-in heater core 70 that warms the passing air with hot water from the engine 2 and an evaporator 69 that cools the passing air through a refrigerant sent from a compressor driven by the engine 2.

A blower 72 for blowing air sucked from the inside air suction port 68 and the outside air suction port 71 into the air conditioner unit 66 is provided on the left side of the air conditioner unit 66, and a hot water flow path sent from the engine 2 to the heater core 70 is further provided on the left side. A water valve 73 that opens and closes is provided. The inside air suction port 68 and the outside air suction port 71 are provided with interlocking shutters so that when one is opened, the other is closed.

An air mix door 76 is provided on the right side of the air conditioner unit 66 to adjust the air temperature by mixing the air from the heater core 70 and the air from the evaporator 69.

Further, in the cabin K, a control panel 67 for air conditioning for operating the air conditioner unit 66 is provided above the front of the driver's seat 24 on which the tractor operator sits, and a control panel 67 for air conditioning is provided on the right side of the cabin K. The wire W1 is connected to the air mix door 76, and the left wire W2 arranged on the left side of the cabin K is connected to the water valve 73 for adjustment.

The air sent out from the air conditioner unit 66 is distributed to the left and right by the distribution duct 74, and flows forward through the left and right ducts 75L and 75R, so that the air is blown out into the cabin K from a plurality of outlets to make a comfortable space.

K Cabin 2 Engine 10 Roof 10a Narrow part 66 Air conditioner unit 67 Control panel 69 Evaporator 70 Heater core 73 Water valve 76 Air mix door

Claims (3)

In a work vehicle equipped with an air conditioner in a narrow space (10a) formed at the rear of the roof (10) of the cabin (K) provided on the traveling vehicle body, an evaporator (69) for cooling the ventilation and a heater core (70) for warming the ventilation. ) Is housed in the air conditioner unit (66), and a blower (72) for blowing air to the air conditioner unit (66) is provided on the side portion to adjust the flow rate of hot water sent to the heater core (70) in the air conditioner unit (66). A work vehicle characterized in that a water valve (73) is provided on the side opposite to the air conditioner unit (66) with respect to the blower (72). The work vehicle according to claim 1, wherein a water valve (73) is provided on one side of the air conditioner unit (66) and an air mix door (76) is provided on the opposite side. Claims made by arranging wires (W1, W2) connecting the control panel (67) provided on the front side of the cabin (K) to the water valve (73) and the air mix door (76) on the left and right inside of the cabin (K). The work vehicle according to item 2.

Images