JP2942135B2 - Work vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working vehicle such as a backhoe in which a driving cabin provided with a door which can be opened and closed by sliding back and forth is provided on the front side of a driving unit.

[0002]

2. Description of the Related Art In recent years, it has been demanded to mount a driving cabin on a small backhoe or the like in terms of livability. In this case, it is advantageous to use a driving cabin provided with a front-rear sliding opening / closing door capable of easily getting on and off by opening the doorway to the control unit greatly in a narrow place. In order to work in front of the driving cabin, a backhoe or the like is generally equipped with a device configured to slide rearward to open an entrance.

[0003]

In such a working machine, when the temperature inside the driving cabin rises remarkably in the summer, the door may be opened and work may be performed. However, in the case of a small working machine, since the driving unit and the driving cabin are close to each other, if the door provided in the driving cabin is moved rearward to enlarge the entrance, the hood of the door and the driving unit is increased. Will move to the position where it overlaps, especially in models with a cooling air exhaust port in the prime mover, where the door and the exhaust port overlap, and eventually the hot air, which is the cooling air, flows along the gap between the door and the hood. However, the hot air of the cooling air may give an uncomfortable feeling to the operator even though the air flows into the control section and the door is opened to raise the temperature.

[0004] The present invention is to prevent the hot air of the cooling air from flowing into the control unit even if the door that slides rearward overlaps with the cooling air exhaust port of the driving unit while opening the doorway greatly. Aim.

[0005]

In order to achieve the above object, a feature of the present invention is to arrange a driving cabin provided with a door which can be opened and closed by sliding back and forth on the front side of a prime mover, wherein the door has A partition member that is attached to overlap the cooling air exhaust port of the driving unit in the open state moved rearward, and that closes a gap between the door and the hood of the driving unit is provided on the inner surface of the door and the cooling air exhaust port. It is located on the control section side of the mouth.

[0006]

According to the present invention, even if the open door slid rearward overlaps with the cooling air exhaust port of the driving unit,
Since the partition member is provided in the gap between the bonnet of the prime mover and the door and on the inner surface of the door at a position closer to the control section than the cooling air exhaust port, it prevents the inflow of hot air as cooling air from the above-described gap. . Also, since the partition member is provided on the inner surface of the door, the partition member does not protrude from the machine as compared with the case where the partition member is fixed to the bonnet of the driving portion. There is nothing.

[0007]

Therefore, according to the present invention, even if the door is moved rearward and the work is performed in a state where the entrance is largely opened, even if the door and the cooling air exhaust port of the driving portion overlap, Hot air, which is cooling air, does not flow into the control unit from the gap between the hood and the door of the driving unit. Also, since it is possible to work safely even when the normal door is closed,
In terms of working environment and safety, an excellent working vehicle could be provided.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a backhoe will be described below with reference to the drawings.

FIG. 1 shows an entire mini backhoe. This backhoe is provided with a swivel 2 on the upper part of a traveling body provided with a crawler traveling device 1 so as to be able to swivel around a vertical axis Y. On the upper part of 2, a driving unit 3, a digging device 4, and an operating cabin 5 are arranged.

As shown in FIGS. 2 and 4, the driving unit 3 includes a radiator 6, a cooling fan 7, and an engine 8 arranged in a horizontal line, and a cooling air suction port 9a formed in a hood 9 covering them. After the outside air is taken in and the radiator 6 and the engine 8 are cooled, the cooling air is discharged from the other cooling air discharge port 9b.

The operating cabin 5 has a steering section 10 inside thereof and a door 11 along the side wall 5a.
Is mounted on the front side of the driving unit 3 so that it can be held in a fully closed state in which the doorway 5b is closed and a fully opened state in which the door is moved backward to open the doorway 5b. Have been.

Next, the structure of the door 11 which can be opened and closed by sliding back and forth will be described. When the door 11 is closed, it is flush with the side wall 5a, and when opened, it is located outside the side wall 5a. In addition, since the door 11 is extended outward and is opened and closed along the side wall 5a, as shown in FIGS.
Guide rollers 12a, 12b, and 12c rotating around a vertical axis at a vertical intermediate portion on the rear end side, and a horizontal axis for load support at a lower portion on the front end side of the door 11 and a vertical intermediate portion on the rear end side. Guide rollers 12b 'and 12c' that rotate around the core are provided, while the side walls 5 located at the upper edge and the lower edge of the entrance 5b.
a and a bonnet 9 located in the middle of the vertical direction behind the entrance 5b.
Guide rails 13a, 13b, 13c, 13b ', and 13c' are provided for b, 12c, 12b ', and 12c'.

As shown in FIGS. 1 to 4, a partition member 14 is fixed to a lower portion of the inner surface 11a of the door 11. When the doorway 5a is opened, that is, when the door is slid backward, the cooling air exhaust port 9b of the driving unit 3 overlaps, and the hot air as the cooling air flows forward along the gap between the door 11 and the bonnet 9. Although it is going to flow into the control unit 10, the partition member 14 located in front of the cooling wind exhaust port 9b guides the hot air downward, upward, and backward, so that the hot air is prevented from flowing into the control unit 10. ing.

The shape and material of the partition member 14 are not limited. The cooling member may be formed in a U-shape surrounding the upper and lower portions of the cooling air outlet 9b to guide the cooling air only to the rear. An elastic member may be used to contact the bonnet 9. As a work vehicle, besides the backhoe,
A combine or a wheel loader in which the driving unit and the driving cabin are adjacent to each other may be used.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the accompanying drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a backhoe.

FIG. 2 is a side view of a main part showing a relationship between a cabin and a driving unit.

FIG. 3 is a longitudinal sectional view showing a sliding structure of a door.

FIG. 4 is a sectional view of a main part showing a relationship between a cabin and a driving unit.

[Explanation of symbols]

 Reference Signs List 3 Drive unit 5 Operating cabin 9 Bonnet 9b Cooling air exhaust port 10 Control unit 11 Door 11a Inner surface 14 Partition member

Claims (1)

(57) [Claims] 1. A front-rear sliding door (1)
The driving cabin (5) provided with 1) is disposed in front of the driving unit (3), and the cooling air exhaust port (9b) of the driving unit (3) in the open state where the door (11) is moved rearward. And a partition member (14) for closing a gap between the door (11) and the bonnet (9) of the driving portion (3), and an inner surface (11) of the door (11).
a), and the control unit (1)
Work vehicle provided on the 0) side.