JP3059851B2 - 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 crawler type traveling machine in which a digging device such as a main boom, a bucket arm or a bucket is arranged at the front of a seat, and a turning frame is arranged within the width of the crawler type traveling device. The present invention relates to a configuration of a small excavating work vehicle capable of digging a gutter in an alley through which the device can pass.

[0002]

2. Description of the Related Art Conventionally, a coffee cup type excavating vehicle in which a revolving frame is formed within the width of a crawler type traveling device and the revolving frame portion can be revolved 360 degrees within a space where the crawler type traveling device can pass. It is known. However, in the case of this type of excavator, the main boom, the bucket arm, and the bucket are located on the sides of the seat, and there are difficulties in terms of livability, safety, and working speed. The present invention makes it possible to turn the turning frame F to a position close to 180 degrees within the width of the crawler type traveling device, to perform a side ditching operation in a space where the crawler type traveling device can pass, and to provide a bucket at the front of the seat S. And a bucket arm and a main boom. Further, in the conventional excavation work vehicle, a canopy mount for supporting the canopy is provided, but the canopy mount is fixed to the revolving frame and only protrudes above the bonnet. It did not double as a role.

[0003]

SUMMARY OF THE INVENTION In the present invention, a strong support state is obtained by a canopy disposed above a seat so that the canopy also serves as a safety frame. For this purpose, the base of the canopy mount is directly fixed to the revolving frame F and is arranged so as not to interfere with other components inside the hood.

[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 the first aspect of the present invention, in the configuration in which the canopy support of the excavator is mounted on the canopy mount, the canopy mount is housed and disposed inside a hood covering an upper part of the engine. Claim
In Item 2, the hood is made of a resin material. According to the third aspect, the canopy mount is directly fixed on the turning frame, and the canopy mount and the canopy support are separated from each other and can be separated. In claim 4, the engine is arranged between the left and right canopy mounts arranged on the left and right. According to a fifth aspect of the present invention , a flexible canopy boot is covered around the lower part of the canopy support and the bonnet.

[0005]

Next, the operation will be described. That is, since the canopy mounts 8 and 9 are housed inside the hood 6, there is no extra protrusion on the external appearance of the excavation work vehicle, which is safe. In addition, the appearance design is not spoiled. When the canopy mounts 8 and 9 are arranged outside the bonnet 6, the outer diameter of the revolving frame F becomes large and may not fit within the width of the crawler type traveling device 3, but in the present invention, The canopy mounts 8 and 9 are erected in a substantially circular revolving frame F and are covered with a bonnet 6 so that all can be arranged and housed in the circular revolving frame F, and are small and revolvable. It was possible and a digging work vehicle having a digging part arranged in front of the seat S could be obtained. In addition, molding becomes easy even if the bonnet 6 has a complicated shape. In addition, it is necessary to attach the canopy struts 11 and 12 to the holes formed in the bonnet 6, and when the bonnet 6 is detached and attached, it may interfere with the canopy struts 11 and 12 and bend. In such a case, by forming the bonnet 6 with a synthetic resin, even if deformation occurs, it is restored immediately.

Further, by fixing the lower portions of the canopy mounts 8 and 9 directly to the revolving frame F, the canopy supports 11 and 12 can maintain sufficient strength as a safety frame. In addition, canopy support 11.1
2 and the mount brackets 8a and 9a can be detached, so that the canopy C above the canopy posts 11 and 12 can be detached when the bonnet 6 is detached, so that the integrally formed bonnet 6 can be detached. It became easier. Further, the canopy mounts 8 and 9 can serve as a protective body for the engine E, and can be used when the excavator has a collision or falls.
No more serious damage was done.

Further, the bolts for attaching the canopy posts 11 and 12 to the mount brackets 8a and 9a are not exposed from the outside, so that the design can be improved. In addition, the canopy boots 11a and 12a prevent the noise of the engine E from leaking to the operator's ear through holes formed in the bonnet 6 for connecting the canopy posts 11 and 12 and the mount brackets 8a and 9a. Can be done.

[0008]

Next, an embodiment will be described. 1 is a left side view of the excavator of the present invention, FIG. 2 is a right side view thereof, FIG. 3 is a rear view thereof, and FIG. 4 is a right side view showing a relative position of a canopy C, a canopy mount 9 and a hydraulic pump device P. FIG. 5 is a rear view showing the canopy C, the hood 6, and the canopy struts 11 and 12, and FIG. 6 is an engine E and canopy mounts 8.9.
FIG. 7 is a plan view showing the positions of the pedal guards 25L and 25.
FIG. 8 is a plan view showing the configuration of the right canopy mount 8.
And a rear view showing the position of the left canopy mount 9, and FIG. 9 is a plan view of the same.

The overall configuration of the excavator will be described with reference to FIGS. The revolving frame F is supported on the crawler traveling device 3 via a revolving table bearing 26. The hood 6 and the seat S are arranged on the revolving frame F, and the canopy C supported by the canopy posts 11 and 12 is provided on the seat S. The canopy struts 11 and 12 also serve as a safety frame for protecting the operator sitting on the seat S when falling down. A bucket 4 that is supported by the main boom 1 and the bucket arm 2 and performs excavation work is supported at the front of the revolving frame F. At the front of the seat S, an operation column 5 is provided upright. Operation pedals 25L and 25R are arranged at left and right positions of the operation column 5. The present invention particularly relates to the arrangement of the canopy mounts 8.9 for supporting the canopy C and the operation pedals 25L and 25R. Reference numeral 15 denotes a tool box provided on the left canopy mount 9.

Next, FIGS. 4, 5 and 6 will be described.
As shown in FIG. 5, the bonnet 6 is placed in a semicircular shape on the left and right sides of the revolving frame F, and a concave portion 16 for placing the seat S is provided at the center of the bonnet 6. Canopy mounts 8.9 for supporting the canopy posts 11 and 12 are arranged on the left and right sides of the recess 16. The canopy mounts 8 and 9 are stored upright in the hood 6. Canopy boots 11 a and 12 a are attached to the bases of the canopy supports 11 and 12, and the bases of the canopy supports 11 and 12 are mounted on mounting brackets 8 a and 9 a protruding above the right canopy mount 8. Is placed.

The bases of the canopy pillars 11 and 12 are covered with canopy boots 11a and 12a to improve design and provide safety. The right canopy mount 8 and the left canopy mount 9 themselves are arranged inside the bonnet 6, but the mounting brackets 8a and 9a
Is protruded from the upper surface of the bonnet 6, and the lower portions of the canopy posts 11 and 12 are fixed to the portion by bolts. And the left and right canopy supports 11
A reinforcing rod 17 is provided between the reinforcing rods 1 and 12.
Reference numeral 7 also serves as an operator's safety bar at the rear of the seat S.

Among the canopy mounts provided on the left and right, the right canopy mount 8 is arranged on the exhaust side of the radiator 7 on the side of the engine E. The right canopy mount 8 also functions as an air exhaust guide for guiding exhaust air discharged from the radiator 7 backward. Therefore, the inside of the right canopy mount 8 is hollow, and the front side is formed as a guide plate.

A left-side canopy mount 9 in the canopy mount is disposed at a position on the left side of the engine E, which is also disposed obliquely to the traveling direction, and is driven by a crankshaft of the engine E. It is configured to cover the periphery of the hydraulic pump device P fixed on the extension. The hydraulic pump device P, which is an expensive precision component, is configured by the left canopy mount 9 so as not to be deformed and damaged by impact or collision.

As shown in FIGS. 6, 8, and 9,
The canopy mounts 8 and 9 are arranged at left and right positions of the engine E, and also serve as protection bodies for protecting the engine E from left and right. The left canopy mount 9 forms legs before and after the hydraulic pump device P, and the left canopy mount 9 protects the hydraulic pump device P.

FIG . 7 shows the configuration of the operation pedals 25L and 25R arranged on the left and right of the operation column 5. That is, in an ordinary large excavator, there is a space in which the operation pedals 25L and 25R can be arranged at a position behind the operation column 5, but as in the present configuration , the diameter of the frame is equal to the width of the crawler-type traveling device 3. In the case of a digging work vehicle that fits inside the vehicle, there is no room for arranging the operation column 5 and the operation pedals 25L and 25R back and forth. Therefore, the operation pedals 25L and 25R are disposed at the left and right sides of the operation column 5 at positions overlapping the front and rear.

Therefore, the operator must operate the operation pedals 25L and 25R while the feet are open, and the feet 29L and 29R open in a state of inverted "C".
In this configuration , the inverted “C” shaped foot 29L · 2
In accordance with 9R, the operation pedals 25L and 25R are also arranged in an inverted "C" shape. The operation pedal 25L
The front handrail 27 is formed outside the 25R, and the foot 29
It is configured such that L · 29R does not come out of the front handrail 27. With this, the feet 29L and 29R
In a state in which the legs 29L and 29R protrude outside the turning frame F, the foot portions 29L and 29R come into contact with obstacles, thereby preventing a personal injury.

[0017]

As described above, the present invention has the following advantages. That is, as in claim 1,
In the configuration in which the canopy support of the excavator is mounted on the canopy mount, the canopy mount is housed inside the hood covering the upper part of the engine, so that the canopy mounts 8.9 are housed inside the hood 6. As a result, there is no extra protrusion on the external appearance of the excavator and the vehicle becomes safe. In addition, the appearance design is not spoiled. Also canopy mount 8
9 is disposed outside the bonnet 6, the outer diameter of the turning frame F becomes large and may not fit within the width of the crawler-type traveling device 3. Canopy mount 8 in frame F
-By erected 9 and covered with the bonnet 6, everything can be arranged and stored inside the circular revolving frame F, small and revolvable, and the excavation part is arranged in front of the seat S The excavation work vehicle was completed.

Since the bonnet is made of a resin material, the molding is easy even if the bonnet 6 has a complicated shape. The bonnet 6
It is necessary to attach the canopy struts 11 and 12 to the part of the hole formed in the hole, and when the bonnet 6 is attached and detached, there is a possibility that the canopy struts 11 and 12 may be bent by interference.
In such a case, the bonnet 6 is made of synthetic resin.
Thus, even if the deformation occurs, it is restored immediately.

According to the third aspect of the present invention, the canopy mount is directly fixed on the revolving frame, and the canopy mount and the canopy support are separate and separable. By fixing the lower portion, the canopy struts 11 and 12 can maintain sufficient strength as a safety frame. Also, the canopy supports 11 and 12 and the mount bracket 8a
-By making the portion 9a detachable, the upper canopy C can be removed from the canopy struts 11 and 12 when the bonnet 6 is detached, so that the integrated bonnet 6 can be easily attached and detached. is there.

Since the engine is disposed between the left and right canopy mounts disposed on the left and right, the canopy mounts 8 and 9 can serve as a protective body for the engine E. In the event of a collision or a fall of the excavator, no serious damage to the engine E is caused.

According to a fifth aspect of the present invention, in the configuration in which the canopy support of the excavator is mounted on a canopy mount arranged in the bonnet, a flexible space is provided below the canopy support and the bonnet. Since the canopy boots are covered, the canopy supports 11 and 12 and the mounting bracket 8
The bolt for attaching to the a.9a is not exposed in appearance, and the design can be improved.
In addition, canopy struts 11 and 12 and mount bracket 8a
The noise of the engine E can be prevented from leaking to the operator's ear from the hole formed in the hood 6 for the connection with the 9a by the canopy boots 11a and 12a.

[Brief description of the drawings]

FIG. 1 is a right side view of an excavating work vehicle according to the present invention.

FIG. 2 is a left side view of the same.

FIG. 3 is a rear view of the same.

FIG. 4 is a right side view showing a relative position of a canopy C, a canopy mount 9, and a hydraulic pump device P.

FIG. 5: Canopy C, bonnet 6 and canopy support 11
Rear view showing 12.

FIG. 6 is a plan view showing positions of an engine E and canopy mounts 8 and 9;

FIG. 7 is a plan view showing the configuration of the pedal guards 25L and 25R.

FIG. 8 is a rear view showing the positions of a right canopy mount 8 and a left canopy mount 9;

FIG. 9 is a plan view of the same.

[Explanation of symbols]

 P Hydraulic pump device V Hydraulic valve device 5 Operation column 6 Bonnet 8 Right canopy mount 9 Left canopy mount 8a / 9a Mount bracket 11,12 Canopy support 11a / 12a Canopy boot 25L, 25R Operation pedal

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Takeshi Koga 428 Enami, Okayama-shi In the company of Seirei Industrial Co., Ltd. Hei 1-75170 (JP, U) Actually open 1983-38864 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02F 9/00-9/16

Claims (5)

(57) [Claims] 1. A digging work vehicle in which a canopy support of the digging work vehicle is mounted on a canopy mount, wherein the canopy mount is housed and arranged inside a hood covering an upper part of an engine. 2. The excavating work vehicle according to claim 1, wherein the bonnet is made of a resin material. 3. The excavating work vehicle according to claim 1, wherein the canopy mount is directly fixed on the revolving frame, and the canopy mount and the canopy support are separate and separable. . 4. The excavating work vehicle according to claim 1, wherein an engine is disposed between the left and right canopy mounts disposed on the left and right. 5. The excavating work vehicle according to claim 1 , wherein a flexible canopy boot is covered around the lower part of the canopy support and the bonnet.