JPH07189293A - Slewing type excavation device - Google Patents

Abstract

PURPOSE:To make it possible to enhance the quality of design and the capacity of an operating visual field and discharge directly an exhaust air from an outdoor equipment unit to the open air by using an extremely limited space for an equipment body in a cooling device in a cabin of a slewing type excavation device. CONSTITUTION:In a cooling device which installs a cabin C which covers the surrounding space around a seat, an outdoor condenser 1 of the cooling device is laid out in a space surrounded by the cabin C and a bonnet 15 installed to the lateral part of the cabin C and the elevation of the outdoor condenser 1 is adapted to substantially identical to or below that of the bonnet 15. A part of the outdoor condenser is projectingly laid out in an indoor space of the cabin C. The outdoor condenser 1 a:M a condenser fan 7 and a fan motor 6 are integrated in one piece and vibroisolatingly supported in an outside dimension of the outdoor condenser 1 with a plurality of damping and elastic members 8 installed to a support bracket 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an arrangement of an outdoor condenser for cooling in a swing excavator such as a backhoe when a seat is surrounded by a cabin to improve comfort.

[0002]

2. Description of the Related Art As a conventional technique related to a turning excavator, Japanese Laid-Open Patent Publication No. 60-226922 and techniques shown in FIGS. 11 and 12 are known. That is, FIG.
1 is a front view showing the arrangement of the conventional cabin cooling device in the backhoe, and FIG. 12 is a plan view showing the arrangement of the cabin cooling device of FIG. 11 and 12, the indoor unit fan 5 is provided at the rear of the seat inside the cabin C.
The indoor cooler unit 4 and the cooling air duct 3 are arranged so that the cooling air from the cooling air duct 3 is discharged to the position just behind the seat. The parts such as the outdoor condenser 1 and the condenser fan 7 which constitute the outdoor unit of the cooling device are provided so as to project to the side of the front portion of the cabin C. Therefore, the bonnet, the hydraulic oil tank, the fuel tank, etc. could not be arranged at the portion where the outdoor condenser 1 and the outdoor unit cover 12 were projected.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides an outdoor condenser in an air conditioner in a cabin of a swivel excavator by utilizing a very limited space of a fuselage to improve design and driving visibility. It is configured so that the exhaust air of the outdoor unit can be directly discharged to the outside air. The exhaust air is discharged upward and forward to improve the cooling effect. In addition, the exhaust air was designed not to be directly discharged to the seat operator or assistant. Also, in the space between the hood and the cabin, which cannot normally be arranged, the part of the receiver dryer 2 arranged laterally of the outdoor condenser is an obstacle, but this part is projected inside the cabin. The outdoor unit unit centering on the outdoor condenser is arranged in a narrow space by being fitted inside the projecting chamber in the cabin. In the space where the outdoor unit is placed,
The vibration damping mechanism of the outdoor unit was also included, and the vibration relationship with other members was cut off even though the outdoor unit was placed in a narrow space.

[0004]

The problems to be solved by the present invention are as described above. Next, the means for solving the problems will be described. According to the first aspect of the present invention, the cabin C that covers the periphery of the seat is provided, and the cooling device is arranged in the cabin C.
Is placed in a space surrounded by a cabin C and a bonnet 15 arranged on the side of the cabin C, and the height of the outdoor capacitor 1 is set to be substantially equal to or less than the height of the bonnet 15. Is.

According to a second aspect of the present invention, in the swivel excavator, a part of the outdoor condenser 1 is arranged so as to project into the indoor space of the cabin C.

In the third aspect, the outdoor condenser 1, the condenser fan 7, and the fan motor 6 are integrated, and the plurality of vibration-proof elastic bodies 8 provided on the support bracket 9 prevent vibrations within the outer dimension of the outdoor condenser 1. I supported it.

[0007]

[Operation] Next, the operation will be described. In claim 1, the exhaust air of the outdoor unit can be directly discharged to the outside air. Moreover, since the exhausted air is discharged upward and forward, the cooling effect can be improved. In addition, the exhaust air is not directly discharged to the seat operator or assistant. Also, because the outdoor capacitor 1 could be placed using the very limited space of the aircraft,
The design and driving visibility were improved.

In the second aspect, in the space of the hood 15 and the cabin C, which cannot be normally arranged,
In particular, the portion of the receiver dryer 2 arranged on the side of the outdoor condenser 1 is an obstacle, but by fitting this portion inside the cabin protruding chamber 10 protruding inside the cabin C, a narrow space is obtained. It was possible to arrange an outdoor unit centering on the outdoor condenser 1.

According to the third aspect of the present invention, the anti-vibration mechanism of the outdoor unit can be included in the space in which the outdoor unit is arranged. It was possible to break the vibration relationship between.

[0010]

EXAMPLES Next, examples will be described. 1 is a right side view of the turning excavator of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a plan view of the same, FIG. 4 is a left side view of the cabin C, and FIG. 5 is an enlarged plan view. 6 is an enlarged side view of the outdoor unit cover 12 portion, FIG. 7 is a front view showing the relationship between the outdoor unit cover 12, the outdoor condenser 1 and the support bracket 9, and FIG. 8 is the lower window 21 of the cabin C and the receiver dryer 2 portion. 9 is a side view showing a state in which the support bracket 9 and the outdoor capacitor 1 are supported by the vibration-proof elastic body 8, and FIG. 10 is a front view showing the state supported by the vibration-proof elastic body 8.

The overall construction of the backhoe will be described with reference to FIGS. 1, 2 and 3. Crawler type traveling device 1
4, a swivel base bearing 13 is arranged, and an earth discharging blade 20 is arranged between the left and right crawler type traveling devices 14. A swivel frame F 360 is mounted on the swivel bearing 13.
It supports to be able to turn. A boom pivot support portion 19 is provided at the tip of the swing frame F, and the main boom 18 is pivotally supported by the boom pivot support portion 19. The bucket arm 17 is pivotally supported at the tip of the main boom 18, and the bucket 16 is pivotally supported at the tip of the bucket arm 17.

An engine E, a fuel tank, a hydraulic oil tank and the like are arranged on the revolving frame F, and a bonnet 15 for covering the engine E and the tank is provided at a position approximately half of the plan view. As shown in FIG. 3, the bonnet 15 is arranged in an oblique semicircular shape, a seat is arranged in the remaining semicircular portion, and the seat portion is covered with a cabin C. The outdoor capacitor 1 of the present invention is arranged in a dead space formed between the semi-circle hood 15 and the cabin C. A portion of the outdoor condenser 1 is covered with an outdoor unit cover 12.

As shown in FIG. 2, the outdoor unit cover 12 is provided with three windows of a cooling air suction window 23, an upper exhaust air discharge window 22 and a front exhaust air discharge window 24. These are provided with a filter that does not allow dust to pass through. Next in FIG.
An enlarged view will be described with reference to FIG. Inside the cabin C, it is necessary to arrange the indoor unit portion in the cooling device, and the indoor unit portion is configured by integrating the indoor unit fan 5, the indoor cooler unit 4, and the cooling air duct 3. . The air that is generated by the indoor unit fan 5 and that has passed through the inside of the indoor cooler unit 4 constituted by the fins through which the refrigerant passes is cooled and supplied from the cooling air duct 3 to the inside of the cabin C. These indoor unit units are arranged above the cabin C. The cooling air duct 3 is branched into two at the ceiling portion of the cabin C. A cooling compressor 40 is driven by the engine E.

The outdoor unit constituting the essential part of the present invention is arranged in a triangular dead space between the front part of the bonnet 15 and the front part of the cabin in a diagonal direction in which the front part is on the right side and the rear part is on the left side. Has been done. Next, referring to FIGS. 9 and 10, a supporting and fixing mechanism of the outdoor unit with respect to the supporting bracket 9 will be described. That is, the support bracket 9 is erected on the revolving frame F. The support bracket 9 is composed of a lower support base 9b and an upper support plate 9a. The support plate 9a is formed to have a size substantially equal to or smaller than the square size of the outdoor capacitor 1. The central portion of the support plate 9a is opened to the size of the condenser fan 7, and four vibration-proof elastic bodies 8 are provided at the four corners of the circular opening and the remaining portion of the square support plate 9a.・
8 and 8 are arranged, and the vibration-proof elastic body 8 supports the four corners of the outdoor capacitor 1 in a vibration-proof manner.

A condenser fan 7 is supported by the outdoor condenser 1, and a fan motor 6 is attached to the condenser fan 7.
Is supported. Therefore, the entire outdoor unit is supported by the outdoor condenser 1, and the outdoor condenser 1 is supported by the support bracket 9 so that the vibration on the side of the revolving frame F can be transmitted to the outdoor unit. On the contrary, the vibrations of the fan motor 6 and the condenser fan 7 are not transmitted to the cabin C side.

6, FIG. 7, and FIG. 8, the portion of the receiver dryer 2 projecting from a part of the outdoor unit is arranged in the in-cabin projecting chamber 10 projecting inside the cabin C. As shown in FIG. 8, the inside-cabin protruding chamber 10 replaces the glass in the portion of the right front window 21 in the lower part of the cabin C with the inside-cabin protruding chamber 10.
When the air conditioner is of a normal specification and is not provided with the air conditioner, the projecting chamber 10 in the cabin is removed and a normal glass window is fitted therein. When the air conditioner is provided, the cabin window is used instead of the glass window. The inward protruding chamber 10 is inserted. A portion of the receiver dryer 2 fixed to the rear end portion of the outdoor condenser 1 is fitted inside the cabin protruding chamber 10.

Next, the upper exhaust air discharge window 22, the cooling air suction window 23, and the front exhaust air discharge window 24 provided on the outdoor unit cover 12 will be described. The outdoor unit has a hood 15
Since it is arranged between the cabin and the cabin C, the space cannot be used freely and the position of the opening is limited. Then, the outdoor condenser 1 is arranged obliquely, and on the side of the cabin C corresponding to the front surface of the outdoor condenser 1,
The front exhaust air discharge window 24 is opened to suck the outside air. The exhaust air after the outside air has passed through the outdoor condenser 1 is provided with an upper exhaust air discharge window 22 on the upper side or a cooling air suction window 23 on the front right side.
It is configured to be discharged from. A portion of the upper exhaust air discharge window 22 substantially covers above the bonnet 15.

[0018]

Since the present invention is constructed as described above, it has the following effects. In a configuration in which a cabin C that covers the periphery of the seat is provided and a cooling device is arranged in the cabin C as in claim 1, the outdoor condenser 1 of the cooling device is arranged in the cabin C and at the side of the cabin C. Since it is arranged in a space surrounded by the bonnet 15 and the height of the outdoor condenser 1 is set to be substantially equal to or lower than the height of the bonnet 15, the exhaust air of the outdoor unit is directly discharged to the outside air. You can do it. Moreover, since the exhausted air is discharged upward and forward, the cooling effect can be improved. In addition, the exhaust air is not directly discharged to the seat operator or assistant. Further, since the outdoor capacitor 1 can be arranged by utilizing the very limited space of the machine body, the designability and the driving visibility can be improved.

Since a part of the outdoor condenser 1 is arranged so as to project into the interior space of the cabin C as in claim 2, the bonnet 15 and the cabin C, which cannot be arranged normally, can be arranged.
In particular, the portion of the receiver dryer 2 arranged laterally of the outdoor condenser 1 is an obstacle, but it is necessary to fit this portion into the inside of the cabin protruding chamber 10 protruding inside the cabin C. As a result, the outdoor unit having the outdoor condenser 1 as the center can be arranged in a narrow space.

According to the third aspect, the outdoor condenser 1, the condenser fan 7 and the fan motor 6 are integrated, and a plurality of vibration-proof elastic bodies 8 provided on the support bracket 9 are used to prevent vibrations within the outer dimension of the outdoor condenser 1. Since it was supported, it was possible to include the anti-vibration mechanism of the outdoor unit in the space where the outdoor unit was placed, so even though it was an outdoor unit that was placed in a narrow space, it could vibrate with other members. It was possible to break the relationship.

[Brief description of drawings]

FIG. 1 is a right side view of a swing excavator of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a left side view showing a side of a cabin C.

FIG. 5 is an enlarged plan view of the same.

FIG. 6 is an enlarged side view of the outdoor unit cover 12 portion.

FIG. 7 is a front view showing the relationship between the outdoor unit cover 12, the outdoor capacitor 1, and the support bracket 9.

FIG. 8 is a lower window 21 of the cabin C and a receiver dryer 2
FIG.

9 is a side view showing a state in which a support bracket 9 and an outdoor capacitor 1 are supported by a vibration-proof elastic body 8. FIG.

FIG. 10 is a front view showing a supporting state of the vibration-proof elastic body 8.

FIG. 11 is a front view showing the arrangement of a conventional cabin cooling device in the backhoe.

FIG. 12 is a plan view showing the arrangement of the cabin cooling device of FIG.

[Explanation of symbols]

 C Cabin F Swing frame 1 Outdoor condenser 2 Receiver dryer 3 Cooling air duct 4 Indoor cooler unit 5 Indoor unit fan 6 Fan motor 7 Condenser fan 8 Anti-vibration elastic body 9 Support bracket 10 Cabin inward chamber 12 Outdoor unit cover 21 Lower window 22 Upper exhaust air discharge window 23 Cooling air suction window 24 Front exhaust air discharge window

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Takaaki Kuroda 1-32 Chayamachi, Kita-ku, Osaka City, Osaka Prefecture Yanmar Diesel Co., Ltd. (72) Inventor Masao Nagata 428, Enami, Okayama Seirei Industrial Co.

Claims (3)

[Claims] 1. A structure in which a cabin C covering the periphery of a seat is provided and a cooling device is arranged in the cabin C,
The outdoor condenser 1 of the cooling device is arranged in a space surrounded by a cabin C and a bonnet 15 disposed on the side of the cabin C, and the height of the outdoor condenser 1 is substantially equal to the height of the bonnet 15. A swivel excavator characterized by having a height less than that. 2. The swivel excavator according to claim 1, wherein a part of the outdoor condenser 1 is disposed so as to project into the indoor space of the cabin C. 3. The outdoor capacitor 1, the capacitor fan 7, and the fan motor 6 are integrated according to claim 1, and a plurality of anti-vibration elastic bodies 8 provided on the support bracket 9 prevent the outdoor capacitor 1 from being outside the outer capacitor 1. A swing excavator characterized by supporting vibration.