JP3298720B2 - Swiveling excavator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a canopy supporting portion above a driver's seat in a revolving excavator such as a backhoe.

[0002]

2. Description of the Related Art In a conventional swiveling excavation work vehicle, a canopy support penetrates a bonnet and is supported by providing a support base at a portion of a swivel frame. Therefore, the design is poor, and the canopy strut protrudes to the side of the driver's seat, so that when the operator gets on and off the vehicle, the canopy strut interferes.
Further, since the canopy support portion of the canopy protrudes from the turning radius of the turning frame, turning the turning frame causes a problem that the canopy support contacts an obstacle. Further, when a canopy base is provided to support the canopy support, and the canopy base is to be supported by a left mount body or a right mount body which is erected on the side of the engine E, the inside of the bonnet is cut from the support base portion. There was a problem that the rainwater was flooded. Further, when the support portion of the canopy is divided into a left mount body, a right mount body, a canopy base, and a canopy support, there is a problem that the seat mount mounting portion is lost.

[0003]

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and a left mount body and a right mount body are provided inside a hood in order to improve design of a canopy and a support base. A canopy supporting portion constituted by three members of a canopy base is provided, and a canopy support is fixed on the supporting portion. Even if rainwater enters from the bonnet opening at the support base, the rain guard prevents the rainwater from flowing into the inside. In addition, the right mount body supporting the canopy base is also used as a radiator duct, thereby achieving compactness of the engine and the canopy support portion. Further, by changing the shape of the canopy support, the canopy support does not protrude from the outer periphery of the turning frame when the turning frame is turned.

[0004]

The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described. According to claim 1, in a support structure of the canopy 11 disposed above the driver's seat 15 of the turning type excavator, the canopy support 8 supporting the canopy 11 is provided.
Is fixed to the canopy bracket 4, and the canopy bracket 4 is fixed to the canopy base 3 laid on the left mount body 6 and the right mount body 5 arranged on the left and right. Is provided with a rain guard 29 for preventing water from entering from the support base 8a.

According to a second aspect of the present invention, in the support structure of the canopy 11 disposed above the driver's seat 15 of the revolving excavator, the support base 8a of the canopy column 8 supporting the canopy 11 is mounted on the canopy bracket 4. The canopy bracket 4 is fixed to the canopy base 3 provided on the left mount body 6 and the right mount body 5 arranged on the left and right sides, and the seat mount 31 supporting the driver's seat 15 is fixed to the canopy base 3. And fixedly supported by a seat mount bracket 30 projecting forward from the front.

According to a third aspect of the present invention, in the support structure of the canopy 11 disposed above the driver's seat 15 of the revolving excavator, the support base 8a of the canopy column 8 for supporting the canopy 11 is mounted on the canopy bracket 4. The canopy bracket 4 is fixed, and the canopy bracket 4 is fixed to a canopy base 3 provided on a left mount body 6 and a right mount body 7 arranged on the right and left , and one of the mount bodies is also used as a radiator duct.

[0007]

Next, the operation will be described. That is, even if there is a gap between the hood 22 and the support base 8a, and the rainwater floods the upper surface of the canopy base 3, the rain guard 29 can prevent the electrical system and the like from being flooded, Problems such as short circuit and disconnection can be solved. Further, the strength of the seat mount 31 can be increased, and vibration can be reduced when the operator sits on the seat. Further, the sealing performance between the seat mount 31 and the hood 22 can be improved,
The space inside can be used effectively.

Further, the engine E and the canopy column 8 can be arranged in an overlapping arrangement, and the canopy column 8 can be arranged at a position where it does not hinder the operator from getting on and off. In addition, since the arrangement of the right mount body 7, the radiator duct, and the engine E in the hood 22 can be a compact overlapping arrangement,
The turning radius of the turning type excavator can be reduced.
Further, the portion of the canopy support 8 does not come out of the turning outer diameter of the turning frame 19, so that the turning radius of the turning type excavator can be minimized.

[0009]

Next, an embodiment will be described. FIG. 1 is a left side view of the turning type excavator of the present invention, FIG. 2 is a right side view of the turning type excavator, FIG. 3 is a rear view of the turning type excavator, and FIG. FIG. 5 is a plan view of the work vehicle, FIG. 5 is a plan view showing a portion of the canopy base 3, the canopy bracket 4 and the rain guard 29, and FIG. 7, FIG. 7 is a plan view showing a mounting state of the seat mount 31 and the canopy base 3, FIG. 8 is a side sectional view showing a state of the canopy base 3 and the seat mount 31,
FIG. 9 is a side view of an even smaller swiveling excavator.

FIG. 10 is a front view of a miniature swing type excavator, FIG. 11 is a plan view thereof, and FIG. 12 is a plan view showing another embodiment of the canopy base 3 and the canopy bracket 4. 13 is a rear view of another embodiment of the canopy base 3, the canopy bracket 4, and the canopy support 8, FIG.
4 is a plan view showing the arrangement of the canopy posts 8, FIG. 15 is a side view showing the configuration of another canopy post 8, FIG. 16 is a rear view of the canopy posts 8 having the U-shaped canopy posts 8, and FIG. Side view of a canopy 11 configured in a U-shape,
FIG. 18 is a cross-sectional view showing a seal structure between the canopy bracket 4 and the bonnet 22.

Referring to FIGS. 1, 2, 3 and 4, the overall structure of the swing type excavator will be described. The earth discharging plate 13 is arranged between the crawler type traveling devices 14. A turning table bearing 16 is provided at the center of the crawler traveling device 14. A turning frame 1 is supported by the turning table bearing 16 and a turning motor 1 for turning the turning frame 19.
Slightly project below the turning frame 19. The main boom 18 is pivotally supported at the position of the front end of the revolving frame 19 so that the main boom 18 can rotate vertically and swing left and right.
The bucket arm 17 is supported on the upper end of the bucket 8. The bucket 10 is scooped to the tip of the bucket arm 17 and pivotably supported.

An operation column 25 is erected at a rear portion of the pivot frame 19 at which the main boom 18 is pivotally supported, and a safety guide 26 is erected at a front portion of the operation column 25 in a frame shape. Left and right operation levers 27 are provided on the upper part of the operation column 25.
27, and operation pedals 28 are disposed on the left and right below the operation column 25. The driver's seat 15 is disposed at the rear of the operation column 25 from which the step 2 is interposed. The step 2 disposed between the operation column 25 and the driver's seat 15 is configured to be detachable.

A handle 24 is provided on the left side of the driver's seat 15, and a canopy base 12 is fixed to a rear portion thereof.
The canopy 11 is erected on the canopy base 12. An engine E is disposed below the operation column 25, and the hood 22 on the right side of the operation column 25 is disposed.
Inside, a hydraulic oil tank and a fuel tank are arranged, and the upper part is covered with a bonnet 22. A handle 23 is provided upright on the hood 22 to ensure safety when an operator gets on and off the vehicle from the spare entrance a.

An inclined surface b is formed at the front of the bonnet 22 in a plan view.
5, a preliminary entrance a is formed. Normally, the operator goes up and down from the elevator c. However, when the elevator c is specially closed or when the passenger must get on and off from the right side, the crawler-type traveling device 14 is used instead of the stairs. It is possible to get on and off from the entrance a. FIG. 2
As shown in the figure, a radiator grille 20 capable of discharging exhaust air from a radiator of the engine E is provided on a right side surface of the hood 22. An inspection / repair window 21 for inspecting the engine E is provided on a rear surface of the hood 22.

5 and 6, the structure of the canopy base 3, the canopy bracket 4, and the rain guard 29 will be described. In the embodiment of the turning type excavator shown in FIGS. 1 to 8, the portion of the hood 22 surrounding the canopy bracket 4 is open. Therefore, rainwater infiltrates from the opening of the hood 22 and causes a short circuit of the electric system. In order to eliminate such a problem, a rain guard 29 is erected around the canopy bracket 4 erected on the canopy base 3, and the rain guard 29 allows rainwater to easily penetrate into the hood 22. It is configured so that there is no.

Conventionally, the lower end of a canopy support column that supports the canopy is fitted into the hood as it is,
Although fixed on the revolving frame, in the present invention, the canopy base 3 is provided inside the hood 22, and the canopy base 3 is constituted by the left mount body 6 and the right mount body 5. . The engine E is arranged between the right mount body 5 and the left mount body 6.

7 and 8, a seat mount bracket 30 is provided below the canopy base 3, and the seat mount bracket 30 is projected forward to be integrally fixed to the hood 22 and the seat mount 31. . With this configuration, the rear portion of the seat mount 31 can be firmly supported, the sealing property between the hood 22 and the seat mount 31 is improved, and the space inside the hood 22 can be widely used.

FIGS. 9, 10 and 11 show the structure of a canopy in a smaller swing type excavator. In the turning type excavating work vehicle, the driver's seat 15 and the canopy 11 are erected substantially at the center of the turning frame 19. Other configurations are shown in FIGS.
Is similar to the embodiment.

This will be described with reference to FIGS. In this configuration, the support base 8a of the canopy support 8 is also provided.
Is supported by a left mount body 6 and a right mount body 7. However, the right mount body 7 itself also serves as a radiator duct for guiding exhaust air from the radiator 33 of the engine E. A bonnet seal 9 is interposed between the canopy bracket 4 and the support base 8a. The bonnet seal 9 is configured as shown in FIG. 13. Prevents flooding inside.

FIGS. 14 and 15 show the structure of the canopy support 8. In this configuration, the canopy support 8 is formed in an "S" shape in a side view as shown in FIG. 15, and is formed in an arc shape in a plan view as shown in FIG. With this configuration, since the canopy support 8 does not come out of the outer periphery of the turning frame 19, the turning frame 19 does not come into contact with an obstacle when turning, and the turning radius does not increase. .

In FIGS. 16 and 17, the canopy support 8 is formed in a U-shape. By forming the canopy support 8 in a U-shape, the canopy support 8 can be configured so as not to protrude from the turning outer periphery of the turning frame 19.

【The invention's effect】

Since the present invention is configured as described above, the following effects can be obtained. In the support structure of the canopy 11 disposed above the driver's seat 15 of the revolving excavator, the support base 8a of the canopy column 8 supporting the canopy 11 can be mounted and fixed on the canopy bracket 4. The canopy bracket 4 is fixed to a canopy base 3 provided on a left mount body 6 and a right mount body 5 arranged on the left and right sides, and water around the canopy bracket 4 from a portion of the support base 8a is prevented. Since the rain guard 29 for blocking is provided upright, there is a gap between the bonnet 22 and the support base 8a, and even when rainwater floods the upper surface of the canopy base 3, the rain guard 29 allows the rain guard 29 to connect to an electric system or the like. Water could be prevented, and problems such as short circuit and disconnection could be solved.

According to a second aspect of the present invention, in the support structure of the canopy 11 disposed above the driver's seat 15 of the revolving excavator, the support base 8a of the canopy column 8 supporting the canopy 11 is mounted on the canopy bracket 4. The canopy bracket 4 is fixed to the canopy base 3 erected on the left mount body 6 and the right mount body 5 arranged on the left and right, and the seat mount 31 supporting the driver's seat 15 is provided.
Is fixedly supported by the seat mount bracket 30 protruding forward from the canopy base 3, the strength of the seat mount 31 can be increased, and vibration can be reduced when the operator sits on the seat. Further, the sealing performance between the seat mount 31 and the hood 22 can be improved, and the space in the hood 22 can be used effectively.

According to a third aspect of the present invention, in the support structure of the canopy 11 disposed above the driver's seat 15 of the revolving excavator, the support base 8a of the canopy column 8 supporting the canopy 11 is mounted on the canopy bracket 4. The canopy bracket 4 was fixed to the canopy base 3 erected on the left and right mount bodies 6 and 7 mounted on the left and right sides , and one of the mount bodies was also used as a radiator duct. The canopy support 8 and the canopy support 8 can be arranged in an overlapping configuration, and the canopy support 8 can be arranged at a position that does not hinder the operator from getting on and off. Further, since the arrangement of the right mount body 7, the radiator duct, and the engine E in the hood 22 can be compactly arranged, the turning radius of the turning type excavator can be reduced.

[Brief description of the drawings]

FIG. 1 is a left side view of a swing type excavator according to the present invention.

FIG. 2 is a right side view of the swiveling excavator.

FIG. 3 is a rear view of the swiveling excavator.

FIG. 4 is a plan view of the revolving excavator.

FIG. 5 shows a canopy base 3, a canopy bracket 4,
FIG. 3 is a plan view showing a part of a rain guard 29.

FIG. 6 is a rear partial cross-sectional view showing a canopy base 3, a canopy bracket 4, and a rain guard 29;

FIG. 7 is a plan view showing a mounting state of the seat mount 31 and the canopy base 3.

FIG. 8 shows a canopy base 3 and a seat mount 31.
Sectional side view which shows the state of FIG.

FIG. 9 is a side view of a smaller swiveling excavator.

FIG. 10 is a front view of the miniature swing-type excavator.

FIG. 11 is a plan view of the same.

12 is a plan view showing another embodiment of another arrangement of the canopy base 3 and the canopy bracket 4. FIG.

FIG. 13 is a rear view of another embodiment of the canopy base 3, the canopy bracket 4, and the canopy support 8;

FIG. 14 is a plan view showing an arrangement of a canopy support 8;

FIG. 15 is a side view showing the configuration of another canopy support 8;

FIG. 16 is a rear view of the canopy support 8 in which the canopy support 8 is formed in a U-shape.

FIG. 17 is a side view of the canopy 11 also having a U-shape.

FIG. 18 is a rear cross-sectional view of a seal portion interposed between the canopy support column 8 and the canopy bracket 4 at the end of the bonnet 22.

[Explanation of symbols]

 Reference Signs List 3 canopy base 4 canopy bracket 5, 7 right mount 6 left mount 8 canopy support 8a support base 9 bonnet seal 30 seat mount bracket 31 seat mount

Continued on the front page (72) Inventor Takashi Uno 1-32 Chayacho, Kita-ku, Osaka, Osaka Inside Yan Diesel Co., Ltd. (72) Inventor Hideki Seino 1-32 Chayacho, Kita-ku, Osaka, Osaka Yanmar Inside Diesel Co., Ltd. (72) Kazuya Hokimoto 1-32 Chaya-cho, Kita-ku, Osaka-shi, Osaka Yanmar Diesel Co., Ltd. (72) Hidehiko Katsuki 1-32 Chaya-cho, Kita-ku, Osaka, Osaka Yanmar Diesel Co., Ltd. (56) References JP-A-4-15657 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) E02F 9/16 E02F 9/00 E02F 9/08

Claims (3)

(57) [Claims] 1. A support structure for a canopy 11 disposed above a driver's seat 15 of a revolving excavator, wherein a support base 8a of a canopy support 8 for supporting the canopy 11 can be placed and fixed on a canopy bracket 4. The canopy bracket 4 is fixed to a canopy base 3 laid over a left mount body 6 and a right mount body 5 arranged on the left and right sides, and the perimeter of the canopy bracket 4 from the support base 8a is prevented from being flooded. A revolving excavator, comprising a rain guard 29 standing upright. 2. A support structure for a canopy 11 disposed above a driver's seat 15 of a revolving excavator, wherein a support base 8a of a canopy column 8 supporting the canopy 11 can be placed and fixed on the canopy bracket 4. The canopy bracket 4 is fixed to a canopy base 3 provided on a left mount body 6 and a right mount body 5 arranged on the left and right sides, and a seat mount 31 supporting the driver's seat 15 projects forward from the canopy base 3. Seat mount bracket 30
A swiveling excavation work vehicle fixedly supported on a vehicle. 3. A support structure for a canopy 11 disposed above a driver's seat 15 of a revolving excavating work vehicle, wherein a support base 8a of a canopy column 8 supporting the canopy 11 can be placed and fixed on the canopy bracket 4, A turning type excavating operation wherein the canopy bracket 4 is fixed to a canopy base 3 provided on a left mount body 6 and a right mount body 7 arranged on the right and left , and one mount body is also used as a radiator duct. car.