JPH1086845A - Air conditioner for wheel type working vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To dispense with a projection due to a condenser in the upper part, or the rear part of a driving cabin and to improve workability and maneuverability even in a narrow space such as an indoor place or a height limited place by installing an outdoor unit such as a condenser in the inside of a front mast. SOLUTION: The subject working vehicle is provided with a driving cabin 15, an air conditioner regulating an air condition of the driving cabin inside, a condenser 20 used for the air conditioner, a front mast 16 arranged on a frame 2, and a front cover 24 arranged slantingly forward of the front mast 16. In this case, the condenser 20 is arranged slantingly substantially along the front cover 24 in the inside of the front mast 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner used for a wheel type work vehicle.

[0002]

2. Description of the Related Art Conventionally, in a wheel type work vehicle in which a cabin is provided in an operation unit, for example, a wheel loader or the like, an outdoor unit such as a condenser of an air conditioner for performing air conditioning in the cabin includes:
As shown in FIG. 5, the front cover 2 of the front mast
4 is constituted by a front cover with a bracket, and a condenser 20a is installed on the front cover.
As shown in FIG. 2, the condensers 20b and 20c are installed by attaching a bracket or the like to the upper part or the rear part of the operation cabin 15.

[0003] As a known example of a technique for providing an outside air by providing an intake port on a ceiling portion of a cabin or for storing articles in a front mast, Japanese Utility Model Laid-Open No. 2-96275 is known.

[0004]

However, as described above, if an outdoor unit such as a condenser is installed so as to protrude above the driving cabin, the height of the working vehicle becomes high, and a narrow space such as indoors is required. When work is performed in places where the height of ceilings and ceilings is limited, workability is reduced or mobility is impaired. In addition, if the outdoor unit protrudes to the rear of the driving cabin and is installed, the rear door of the driving cabin cannot be opened and closed satisfactorily, or the rear view is obstructed during driving. In addition, when the outdoor unit is installed on the front cover of the front mast, a front cover with a bracket is required, and there is a risk of being damaged by falling rocks during work. The present invention seeks to solve these problems.

[0005]

The problems to be solved by the present invention are as described above. Next, means for solving the above problems will be described. That is, in a wheel type work vehicle including an operation cabin 15, an air conditioner for performing air conditioning in the operation cabin, a condenser 20 used for the air conditioner, and a front mast 16 provided on the front frame 2. ,
The condenser 20 is provided inside the front mast 16.

In addition, the front of the front mast 16 is covered with a front cover 24, and the condenser 20 is installed so as to be inclined substantially along the front cover 24.

[0007]

Next, an embodiment of the present invention will be described. 1 is an overall side view of the wheel loader, FIG. 2 is a perspective view showing a front mast with a cover removed, FIG. 3 is a side view showing the inside of the front mast, FIG. 4 is a front view showing a mounting state of a capacitor, and FIG. Is a rear side view of a wheel loader showing an air conditioner mounted state, FIG. 6 is a side view showing a conventional technique, and FIG. 7 is a side view of the same.

Referring to FIGS. 1 and 2, an articulated wheel loader will be described as a wheel type work vehicle. A front pivot 2 is provided at the center of the fuselage to connect the front frame 2 and the rear frame 3 so as to be rotatable left and right, and by rotating the steering handle 4, the front frame 2 can be swung right and left to steer. doing. Front frame 2 has front wheels 5
Are suspended, and pivotally support arms 7 rotatable around a pivot shaft 28 above a pair of left and right support frames 6. 6 erected on the front frame 2, and a bucket 8 is disposed at the front end of the arm 7. Then, the hydraulic cylinder 9 disposed between the arm 7 and the support frame 6 makes it possible to move up and down, and the cross pipe 10
The bucket 8 can be rotated via links 18a and 18b by a hydraulic cylinder 10 having the axis of b as a rotation fulcrum.

As shown in FIG. 3, the cross pipe 10b is provided between the pair of left and right support frames 6, 6 provided on the front frame 2 so as to connect the frames. Make up. A front cover 24 is provided in front of the front mast 16 so as to be substantially inclined. In the present invention, the condenser 20 is arranged inside the front mast 16.

A rear wheel 11 is suspended from the rear frame 3,
An operation column 12 is erected on the front of the rear frame 3, a steering handle 4 is provided on the operation column 12, a hood 13 is arranged behind the operation column 12, and a seat 14 is arranged on the front of the bonnet 13. ing. A driving cabin 15 is provided on the rear frame 3 so as to accommodate the operation column 12, the steering handle 4, the hood 13, and the seat 14. However, the bonnet 13
Has a shape projecting outside the operation cabin 15. A counterweight 17 is provided at the rear end of the frame 3.
The grille 19 is fixed on the counter weight 17.
Is provided.

3 and 4, a bracket 26 is arranged so as to surround both sides and upper and lower surfaces of the capacitor 20 with an appropriate gap therebetween, and the capacitor 20 is fixed to the bracket 26 by fixing members 29, 29,. Is fixed through. The bracket 26 is fixed to the front frame 2 of the front mast 16 by bolts 27. The front cover 24 is fixed to the bracket 26 by the fixture 30. The fixing tools 29, 29, and
Alternatively, the fixture 30 may be configured as an anti-vibration member by bolting via an elastic body or the like. Further, the condenser 20 fixed to the bracket 26 is installed so as to be inclined substantially along the front cover 24 to effectively use the space in the narrow front mast 16. Further, a receiver dryer 21 is disposed inside the front mast 16 behind the condenser 20.

In FIG. 5, a cooler unit (air conditioner) 23 is provided with brackets 32 via brackets 31 on the side of the seat 14 on the hood 13 in the driving cabin 15.
.. is fixed by Further, a compressor 22 is provided inside the hood 13. The refrigerant pipes 25a, 25b, 25c and 25d are provided between the compressor 22 and the condenser 20, the condenser 20 and the receiver dryer 21, the receiver dryer 21 and the cooler unit 23, and the cooler unit 23 and the compressor 22 respectively.
To allow the refrigerant to circulate in each device.

Here, the compressor 22 sucks the refrigerant gas evaporated in the cooler unit 23, compresses the refrigerant gas so that it can be liquefied even if it is cooled by outside air.
0 radiates the heat and compression work heat taken by the cooler unit 23 to the outside air to liquefy the refrigerant gas, and the receiver dryer 21 dries the refrigerant in order to prevent an adverse effect due to moisture mixed in the refrigerant. The cooler unit 23 removes heat from the sucked air in the cabin 15 to cool and dehumidify the air in the cabin 15.

[0014]

As described above, the present invention has the following advantages. That is, by installing an outdoor unit such as the condenser 20 inside the front mast 16, there is no protrusion due to the condenser above and behind the driving cabin 15, and even in a narrow place such as indoors or a place where the height of the ceiling is restricted. Workability is not reduced or mobility is not impaired,
Further, the rear door can be freely opened and closed, and the visibility of the rear portion is not obstructed during driving, so that the space in the front mast 16 can be effectively used.

Further, since the condenser 20 is installed inside the front mast 16 while being inclined substantially along the front cover 24, the space can be effectively used even if the inside of the front mast 16 is narrow, and the compactness can be achieved. I was able to install it. In addition, since the mounting on the front mast 16 is shared with a fixing device for fixing the front cover 24, there is no need to add a new fixing device, thereby enabling cost reduction. Further, since the condenser 20 installed on the front mast 16 is protected by the front cover 24, there is no possibility that the condenser 20 will be damaged by falling rocks during operation.

[Brief description of the drawings]

FIG. 1 is an overall side view of a wheel loader.

FIG. 2 is a perspective view showing a front mast with a cover removed.

FIG. 3 is a side view showing the inside of the front mast.

FIG. 4 is a front view showing a mounted state of the capacitor.

FIG. 5 is a rear side view of the wheel loader showing an air conditioner mounted state.

FIG. 6 is a side view showing a conventional technique.

FIG. 7 is a side view of the same.

[Explanation of symbols]

 2 Front frame 15 Operating cabin 16 Front mast 20 Condenser 21 Receiver dryer 22 Compressor 23 Cooler unit 24 Front cover

Claims (2)

[Claims] 1. A wheel type including an operation cabin 15, an air conditioner for performing air conditioning in the operation cabin, a condenser 20 used for the air conditioner, and a front mast 16 provided on the front frame 2. An air conditioner for a wheel-type work vehicle, wherein the condenser 20 is installed inside the front mast 16 in the work vehicle. 2. The wheel type work vehicle according to claim 1, wherein a front cover 2 is provided in front of the front mast 16.
4 and cover the condenser 20 with the front cover 24.
An air conditioner for a wheel-type work vehicle, wherein the air conditioner is installed so as to be inclined substantially along the line.