JP3315346B2 - Traveling work vehicle equipped with air conditioning unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling work vehicle such as a tractor, a backhoe, a combine, and the like. More specifically, the present invention relates to an all-weather type air conditioning unit (air conditioning unit for cooling, heating, blowing, cooling and heating). Type).

[0002]

2. Description of the Related Art When performing various operations such as plowing, weeding, digging, and harvesting using a traveling work vehicle such as a tractor, a backhoe, and a combine, when the work season is summer, cooling is performed.
If it is possible to heat during winter, the operator can work in a comfortable environment. For this reason, Japanese Utility Model Laid-Open No. 54-1335
In Japanese Patent Publication No. 50 (JP-A-50), an air conditioner for a tractor with a cabin is proposed (conventional example 1).

Further, Japanese Utility Model Laid-Open Publication No. 58-126513 proposes a mounting device for a cooling unit of a tractor with a cabin (conventional example 2). Furthermore, the actual opening 60
Japanese Patent No. 5910 proposes a cabin heating device for a passenger tractor (conventional example 3). Further, Japanese Patent Application Laid-Open Nos. 5-294129 and 7-47832 propose an air conditioner for a tractor with a cabin provided in a tractor hood (conventional example 4).

Further, Japanese Utility Model Application Laid-Open No. 57-108421 proposes an air curtain in which a seat is surrounded from the ceiling of a canopy (shade) to cover the seat (5 of the conventional example). Japanese Utility Model Laid-Open No. 6-50915 proposes a combine in which a cool air device is mounted on the ceiling of a canopy (conventional example 6).

[0005]

SUMMARY OF THE INVENTION The above-mentioned conventional examples 1 to
No. 6 is useful as such, but has the following problems. Since all of the conventional examples 1 to 4 had a cabin, they could not work in a house.

[0006] Even if the air conditioner is applied to a traveling work vehicle having no cabin in the conventional example 4, since the air conditioning unit is of a bonnet interior type, a large-scale design change is required, and there is a problem in practicality. Therefore, there is a technical problem that the air-conditioning efficiency is reduced because the air conditioner is installed in a high temperature region such as the above. On the other hand, the conventional examples 5 and 6 do not have a cabin, so if this technology is applied to a tractor, work in a house can be performed. However, in the conventional example 5, no air conditioning flow is blown to the operator. Therefore, since the work in the house in summer is particularly under a hot air environment, comfortable work cannot be expected. Also, in the conventional example 6, although the cool air outlet is opened toward the driver's seat, Since the air outlet has a so-called armor plate structure, when the air-conditioning flow reaches the operator as a dispersed flow, it is no longer cold air, but merely a blown air, and it is meaningless to adopt it for work inside the house. Was something.

In general, an air conditioning unit generally arranges a filter element, a blower element and a heat exchange element horizontally or vertically along an air flow, and wraps these elements in an outer shell (case) to unit. However, if the work is performed in rainy weather, rainwater infiltrates into the interior, and water infiltrates into the interior due to car washing or the like, and there is a problem in terms of durability as a so-called all-weather air conditioning unit.

Therefore, the applicant of the present invention provides comfortable maneuvering by blowing a large volume of air-conditioning flow (cold air, warm air) on the face of the operator without concentrating (spotting), that is, dispersing. All-weather air-conditioning unit and a traveling work vehicle equipped with the same have been proposed (see Japanese Patent Application No. 8-140286). Although the proposed technique is useful as such, the heating effect is not so much expected when the conditioned air flow is cool but is warm.

Further, when the traveling work vehicle is a tractor, when a loader or the like is mounted on the tractor to form a so-called front loader, it becomes an obstacle when the air conditioning unit mounts the loader frame. It could not be a front loader, and with this, diversification of tractors could not be expected. Further, when the air conditioning unit is provided at the step of stepping on and off, there is a problem that the stepping on and off may be obstructed.

Accordingly, the present invention provides an efficient cooling and cooling system by providing a simple and inexpensive air conditioning unit.
It is an object to provide a traveling work vehicle that guarantees heating. Here, the traveling work vehicle is a tractor, a backhoe,
Combine, etc., especially when it is a tractor
Even if it is equipped with an air conditioning unit, it can not only be used with the front loader but also prevent getting on and off.

[0011]

Means for Solving the Problems To solve the above problems, the present invention takes the following measures. That is, the features of the present invention
In a vehicle equipped with an air conditioning unit in a traveling work vehicle that does not have a cabin surrounding the driving control unit, discharge units for air-conditioned airflow of the air conditioning unit are provided on both left and right sides of the driving control unit. The diameters of the left and right discharge units are different from each other, and the diameter of the left discharge unit is
In that it is smaller than the diameter of the discharge section on the side. Previous
The discharge section on the left side is located behind the discharge section on the right side.
Is preferred. Another feature of the present invention is that
Rollers do not have cabins surrounding the driving controls
In a vehicle equipped with an air conditioning unit,
The discharge part of the air conditioning airflow of the air conditioning unit is
Provided on both left and right sides, the diameters of the left and right discharge parts are different sizes
And the left discharge section is more than the right discharge section.
Is also located at the rear. The left and right discharge units
Is provided at the tip of the elastic bellows
preferable. The left and right discharge sections are at the tip of a telescopic tube
It is preferably provided at the end. By adopting such a configuration, the air-conditioned airflow (referred to as cool air, warm air, blown air, etc.) is blown in a spot-like (intensive) manner at a part desired by the driver (foot, waist, shoulder, face, etc.). In addition, when the user gets on and off the vehicle, the discharge unit can be turned to a position that does not cause obstacles.

[0012]

[0013]

[0014]

[0015]

[0016]

[0017]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 6 show a first embodiment in which an air conditioning unit 2 is mounted behind a seat of a traveling work vehicle 1 exemplified by a two-axis four-wheel tractor. Here, the air conditioning unit means only for cooling, only for heating, only for ventilation,
It is a type of air-conditioning system in which outside air is introduced, air conditioning is performed by a heat exchange element, and this air-conditioned air flow is discharged.

1 and 2, the work vehicle 1 includes a pair of left and right front wheels 3 and a rear wheel 4, and has a seat 6 between left and right rear wheel fenders 5. Left and right entrance 7 between front and rear wheels 3, 4
The entrance 7 is constituted by a step 9 projecting right and left from the vehicle body 8. A steering handle 10 is provided in front of the seat 6, and the operator Q controls the steering wheel 10 while holding the handle 10 while sitting on the seat 6, and constitutes a driving and steering unit 11.

The handle 10 is provided upright at the rear of the hood 12 covering the engine, and is provided with left and right entrances 7.
Are provided with pedal means such as a brake pedal, a foot accelerator pedal, and a clutch pedal. Driving control 1
1 is substantially a right and left step 9 as shown in FIG.
And a floor seat 14 integrally provided with the rear wheel fender 5. The floor seat 14 has a mounting portion 14 </ b> A of the seat 6 on a horizontal surface and a rear rising wall 14.
B, the rising wall 14B is inclined rearward and upward, serves also as a mudproof cover, and is mounted on the upper surface of the vehicle body 8.

The traveling work vehicle 1 shown in FIGS. 1 and 2 is a so-called cabin-less vehicle having no cabin surrounding the driving and operating unit 11 and is shown as a wheel, but may be a crawler. . A safety frame 13 is provided behind the driving section 11, and the safety frame 13 includes left and right rear axle boxes 8A which are part of the vehicle body 8 as shown in FIG.
The left and right mounting posts 13A and the left and right mounting posts 1A, the lower portions of which are fixed to each other, and which are erected behind the rear wheel fender 5.
It comprises a portal member 13C which is provided so as to be foldable and fixable by a fastener 13B over the 3A, and the portal member 13C has a curved portion 13D in a rising shape in front of the mounting column 13A.

An air-conditioning unit 2 is mounted by using a rising wall 14B of a floor deck 14. As shown in FIGS. 9 and 10, the air-conditioning unit 2 has a filter element 15, a cooling heat exchange element (cooler). ) 16, a heat exchange element for heating (heater) 17 and a blowing element 18 are housed side by side in a case body 19.
Reference numeral 5 denotes a cassette type, which can be pulled out from the seat 6 side (front) or from the rear and is provided in the case body 19, and is located upstream of the filter element 15 (upper side in the air flow direction).
In FIG. 9, an outside air introduction part 20 is formed on the case body 19, and is formed on the inner left side facing the seat 6 in FIG. 9, but may be formed on the right side as shown in FIG. Further, it may be formed on the outer side or the upper side.

When the outside air introducing section 20 is provided inside, when the rotary work or the like is mounted on the rear part of the traveling work vehicle 1 via a three-point link or the like, mud or the like flies, etc. This is advantageous in that clogging can be prevented. However, since a net, a filter, and the like can be attached to the outside air introduction unit 20, the outside air introduction unit 20 can be provided near the seat 6, where the vicinity is the center of the seat 6, the left and right, and the rear surface of the upper and lower case body 19. Means that it is formed at the center, left and right, up and down, fender 5 and the like.

The blower element 18 is a blower 18A activated by an electric motor 21. The blowout port 18B of the blower 18A has a connection port 2 of a first duct 22 for left and right branching.
2A, the first duct 22 is disposed at the top of the case body 19 and extends in the left-right direction.
The ventilation passage 22 </ b> B has a rectangular cross section as shown in FIG. However, the ventilation path may have any shape such as a circular cross section and an ellipse.

Left and right second ends are provided at both left and right ends of the first duct 22.
The duct 23 is connected in communication, and the second duct 23 extends forward. The second duct 23 extends along the upper surface (top plate) of the fender 5, and the duct 23 has a discharge part 24 of the air-conditioned air flow provided in the seat 5, beside or diagonally in front of the driver. FIG. 4 shows both of them.

In the embodiment shown in FIG. 2, the left and right second
The duct 23 is installed on the top plate of the fender 5,
As shown in FIG. 1 and FIGS. 4 and 5, it is desirable that the fender 5 be detachably attached to the outer upper surface 5A of the fender 5 by a bolt and nut means 25 as an option. in this case,
It is advantageous that the connection between the first duct 22 and the left and right second ducts 23 is connected via the connection duct 26 because an installation error when assembling as an option can be absorbed.

The left and right second ducts 23 substantially cover the cover 2.
3A, the cover 23A is substantially attached to the fender 5 by the bolt and nut means 25, and the cover 23A is provided on the top plate of the fender 5 so as to provide an armrest on both sides of the seat 6. It is available. A plurality of discharge units 24 for ejecting the conditioned air flow (refer to cooling, heating, air blowing, etc.) are provided in the vicinity of the operation control unit 11, but in the embodiment shown in FIGS. 4 and 5, the left discharge unit 24 is provided. The right discharge section 24 is shifted toward the front side near the rear side, and the front and rear positions are shifted, and
As shown particularly in FIG. 5, the omnidirectionally variable (omnidirectionally expanding) hemispherical discharge portion 24 is formed on the upwardly expanding inclined surface 27 by a spherical seat. The capacity (large diameter) is provided as a different structure.

This is because, in a normal tractor, the entrance 7 having the left step 9 is exclusively used for getting on and off, and the entrance 7 having the right step 9 is used less frequently. By setting the position 24 behind and having a smaller diameter than the discharge unit 24 on the right side, getting on and off is facilitated. 6 (1), (2), and (3), there is shown an example of a telescopic unit having a bellows portion 28 as the discharge portion 24, and the bellows portion 28 is not drawn out (FIG. 6 (1)). 6), the air-conditioned air flow is at the height of the backrest of the seat 6, and the bellows portion 28 is pulled out from this state to make the discharge portion 24 face upward as shown in FIG. The air-conditioning air flow can be blown out to any position, such as the face, shoulders, waist, and feet of the operator, by turning it downward as shown in FIG.
Can be detachably connected to an appropriate position of the seat 6, or can be detachably connected to an operator's clothes (cold protection) of the seat 6.

The bellows part 28 is connected to the bellows part 28 through FIG.
(2) When bent as shown in (3), this bending posture can be maintained, and the discharge part 24 is rotatable toward this axis. Further, as the structure of the discharge part 24 that can be extended and contracted, the discharge part 24 can be a telescopic telescopic tube 29 like a telescope as shown in FIG. 7 or a telescopic tube 29 as shown in FIG. And the bellows part 28 may be combined.

In FIGS. 6 to 8, the left discharge unit 24 is provided.
However, this can also be adopted for the right discharge unit 24, and the configurations of FIGS. 6 to 8 can be individually applied to the left and right discharge units 24, and the right discharge unit 24 can be formed by a spherical seat. With expansion and contraction by an omnidirectional shape, any one of FIGS. Further, in FIGS. 4 to 8, the air conditioning unit 2 and the ducts 22 and 23 are all mounted as opsun, and at this time, as shown in FIG.
It is desirable to provide a receiving device 30 such as a water bottle receiver or an ashtray near or inside the fender.

In any case, the discharge unit 24 is
The air flow becomes a mass flow (volume flow) instead of a dispersed flow by arranging one discharge section 24 having substantially the same cross-sectional area as the cross-sectional area of Even enough cold and warm air can be secured. In FIGS. 5 and 9, reference numeral 31 denotes a control unit, which includes a switch 31A for switching between blowing, cooling, heating, and stopping, and also includes an air volume adjusting lever 31B for them.

As shown in FIG. 9, the heat exchange elements 16 and 17 supply gas such as chlorofluorocarbon from the inlet 32 and take out the gas from the outlet 33 via the heat exchange section.
6A and 17A are constituted by finned bellows pipes or the like, and the air-conditioning flow comes into contact with the air-conditioning flow such as cold air or warm air. A gas medium such as Freon is led out of a compressor provided in the bonnet 12 or the like via a hose or the like. In FIG. 9, reference numeral 34 denotes a drain (water drainage).

Further, the outside air introduction unit 20 and the control unit 31 are arranged as shown in FIG.
As shown in FIG. 9, it can be provided on the inner surface on the right side (seat side), or as shown in FIG. FIG. 11 provides a simple box-like body 35 that is not a cabin surrounding the driving and operating unit 11 of the tractor (traveling work vehicle) equipped with the air conditioning unit 2 of each of the above-described embodiments. When passing through the entrance of the house, the skeleton of the simple box-shaped body 35 (the left and right columns 35A and the top plate 35B) is folded or removed to make it visible inside the house. Stand up or wear it and attach a film 36 of vinyl or the like around it with a hook (hook,
According to this, the air-conditioned air flow is discharged in the atmosphere surrounded by the film 36, so that the air-conditioning efficiency can be improved. FIG. 12 shows a windshield of visibility (vinyl film, plastic, etc.) in front of the driving control section 11 of the tractor (traveling work vehicle) equipped with the air conditioning unit 2 of each embodiment described above, specifically, behind the hood 12. The partition 37 is provided, and according to this, the operator is less likely to receive the wind during the traveling operation, and the efficiency of the conditioned air flow can be improved.

[0033]

As described in detail above, according to the present invention, by providing an all-weather air conditioning unit, the operating environment of the operator can be improved, and there is no problem in mounting the front loader. .

[Brief description of the drawings]

FIG. 1 is a perspective view of a traveling work vehicle including an air conditioning unit according to a first embodiment of the present invention.

FIG. 2 is a plan view of a second embodiment.

FIG. 3 is a side view of a main part of FIG. 1;

FIG. 4 is a plan view of a main part of FIG. 1;

FIG. 5 is a front view of a main part of FIG. 1;

6 is an operation view of FIG. 1, wherein 1 is a perspective view, and 2 and 3 are perspective views in which a discharge direction is changed.

FIG. 7 is a perspective view of a main part of a third embodiment.

FIG. 8 is a perspective view of a main part of a fourth embodiment.

FIG. 9 is a front view of the air conditioning unit.

FIG. 10 is a plan view of the air conditioning unit.

FIG. 11 is a perspective view showing another traveling work vehicle of the present invention.

FIG. 12 is a perspective view showing another traveling work vehicle of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling work vehicle 2 Air conditioning unit 6 Seat 20 Outside air introduction part 23 Duct 24 Discharge part

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-276885 (JP, A) JP-A-10-315756 (JP, A) JP-A-61-37524 (JP, A) JP-A 8- 108741 (JP, A) JP-A-8-164729 (JP, A) JP-A-6-106962 (JP, A) JP-A-62-88236 (JP, U) JP-A-3-120251 (JP, U) Japanese Utility Model Application Hei 1-107621 (JP, U) Japanese Utility Model Application Sho 59-2613 (JP, U) Japanese Utility Model Application Hei 6-50916 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B60H 1/34 B60N 2/24 B62D 49/00

Claims (5)

(57) [Claims] 1. A traveling work vehicle having no cabin surrounding a driving operation unit and equipped with an air conditioning unit, wherein air-conditioning air flow discharge units of the air conditioning unit are provided on both left and right sides of the driving operation unit. The diameters of the left and right discharge units are different from each other, and the diameter of the left discharge unit is
A traveling work vehicle equipped with an air conditioning unit, characterized in that the diameter is smaller than the diameter of the part . 2. The discharge section on the left side is closer to the discharge section on the right side.
The traveling work vehicle equipped with the air conditioning unit according to claim 1, wherein the vehicle is also arranged rearward . 3. A cabin that surrounds a driving section is mounted.
Vehicles equipped with air conditioning units
And the discharge section of the air-conditioning airflow of the air-conditioning unit is
Provided on both left and right sides, the diameters of the left and right discharge parts are different sizes
A traveling work vehicle equipped with an air conditioning unit , wherein the left discharge section is disposed behind the right discharge section. 4. The apparatus according to claim 1, wherein the left and right discharge sections are provided at the tip of a bellows section which is extendable and contractible.
A traveling work vehicle equipped with the air conditioning unit according to any one of claims 3 to 3. 5. The apparatus according to claim 1, wherein the left and right discharge units are provided at a distal end of a telescopic tube that can expand and contract.
A traveling work vehicle equipped with the air conditioning unit according to any one of the above.