JP3298719B2 - 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 swiveling excavator such as a backhoe, which facilitates getting on and off a driver's seat and facilitates inspection and repair of a swing motor.

[0002]

2. Description of the Related Art Many conventional turning-type excavating vehicles are of a large size and are not intended for excavating in open areas or in narrow places. However, recently, due to an increase in sewage works and burial work for wiring pipes, excavation work is often performed in a narrow part such as an open field, and the number of ultra-small revolving excavation work vehicles is increasing. In the case of such an ultra-small revolving excavator, as in the prior art, if there is only one entrance, the operator may not be able to get on and off in the open field. In addition, because of the ultra-small configuration, the swivel motor, the swivel table bearing, and the like are concentrated in a narrow space, which makes it difficult to perform inspection and repair.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the problem that in an ultra-small revolving digging work vehicle, an operator cannot get on and off because the vehicle has turned in a narrow position, so that the side opposite to the elevator port can be removed. In addition, a spare entrance is constituted by using a corner of the hydraulic oil tank as an inclined surface. Also,
Because of the small size, it becomes difficult to inspect the swivel motor and the swivel table bearings. Therefore, the swivel motor that is most frequently inspected and repaired is arranged below the detachable step.

[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, the operation column 25 is erected at the front part, and the step
In the turning type excavating work vehicle in which the driver's seat 15 is erected at an interval of, one side of the driver's seat 15 is opened as a lift port c, and the other side of the driver's seat 15 is viewed from the lift port c. Step
The hydraulic oil tank 4 is arranged at the end of the
The fuel tank 3 is arranged at the rear of the oil tank 4 in an overlapping state.
To the step 2 side in front of the hydraulic oil tank 4,
A slope b is formed in a plan view, and the slope b and the operation column 2
5 and a reserve entrance a, and the hydraulic oil tank 4
And the upper part of the fuel tank 3 is covered with a bonnet 22,
The operator enters the spare entrance a on the hood 22
The handle 23 to be grasped when getting on and off is erected .

According to a second aspect, the turning of the first aspect is provided.
In step type excavator, step 2 is detachable
Then, the turning frame 19 is turned below the step 2.
In this case, a swing motor 1 is provided for the rotation .

[0006]

Next, the operation will be described. That is, according to the first aspect, when the revolving excavator enters the open field and the side of the elevator port c is closed by the fence, the inclined surface b provided on the opposite side to the elevator port c. Spare access port a between operation columns 25
And the operator can get on and off. Further, since there is a gap in the portion of the preliminary entrance a, the operator can see the right front through the portion, so that the visibility can be improved.

According to the second aspect of the present invention, the step motor is opened by removing the bolt of the step 2.
Can be exposed, and the inspection and repair of the turning motor 1 can be performed from this portion. Further, since the turning motor 1 is disposed at a position away from the rear engine E, when the turning motor 1 is inspected and repaired, burns are reduced.

[0008]

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 the configuration of the step 2 and the spare entrance a of the turn type excavator, and FIG. 6 is a plan view showing the arrangement of the turn motor 1, the step 2 and the driver's seat 15. FIG.
It is a top view which shows the structure of.

Referring to FIGS. 1, 2, 3 and 4, the overall structure of the turning 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. 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 the rear part.
The canopy 11 is erected on the canopy base 12. An engine E is arranged below the operation column 25, and a hydraulic oil tank 4 and a fuel tank 3 are arranged on the right side of the operation column 25, 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.

A sloping 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.

Next, referring to FIG. 5, the structure of the spare entrance a, the inclined surface b, and the elevator c will be described in detail. In a normal turning type excavator, there is only the elevator port c, and the spare entrance port a is not provided. However, in the case of a small-sized turning type excavator as in the present invention, when working in the open ground, it may be impossible to get on and off from the side of the elevator port c. The present invention is to solve this problem,
The hydraulic oil tank 4 is disposed at the end of the step 2 when viewed from the elevating port c, the inclined surface b is provided on the operation column 25 side of the hydraulic oil tank 4, and the hood 22 is formed along the inclined surface b. Is also provided with the inclined surface b. Then, a space where the operator can get on and off is formed between the inclined surface b and the operation column 25 to form a spare entrance a.
The fuel tank 3 is arranged at the rear of the hydraulic oil tank 4 in an overlapping state.

Next, referring to FIG. 6, a structure in which the turning motor 1 is provided below the step 2 will be described in detail.
That is, the turning motor 1 is a hydraulic motor for turning the turning frame 19, which is rotatably mounted on the turning table bearing 16. Conventionally, the turning motor 1 is often arranged below the driver's seat 15 or at the center of the turning table bearing 16. In the case of a large turning excavator, even if it is arranged below the driver's seat 15, inspection and repair can be easily performed. However, in the case of the present invention, a small turning excavator is a small turning excavator. Since the inside is complicatedly integrated, inspection and repair of the swing motor 1 become difficult. In the present invention, in order to solve this problem, the turning motor 1 is arranged just below the step 2, and the step 2 is detachable by removing a bolt.

[0015]

As described above, the present invention has the following advantages. That is, the operation column 25 is erected in the front part as in claim 1.
In the turning type excavating work vehicle in which the driver's seat 15 is erected at the rear of the step 2 at an interval of Step 2, one side of the driver's seat 15 is opened as a lift port c, and the other of the driver's seat 15 is lifted and lowered.
Hydraulic oil tank at the end of step 2 when viewed from port c
4 and the hydraulic oil tank 4 is located at the rear
The fuel tank 3 is arranged at
On the side of step 2, an inclined surface b is formed in plan view,
A spare entrance a is formed between the surface b and the operation column 25,
A bonnet above the hydraulic oil tank 4 and the fuel tank 3
22 and a preliminary entrance on the hood 22
A handle 23 to be gripped when the operator gets on and off from a
Since the, swivel excavation work vehicle enters the open field, when the side of the hatch c is blocked by the wall, between the inclined surfaces b and the operating column 25 provided on the opposite side to the said hatch c The operator can get on and off the vehicle after passing through the preliminary entrance a. In addition, since there is a gap at the portion of the preliminary entrance a,
The operator can see the right front through this part, so that the visibility can be improved.

Also, the step 2 is detachable.
So that the pivot frame 1
Since the swing motor 1 for swinging the swing motor 9 is arranged, the swing motor 1 can be exposed by removing the bolt of the step 2 and opening it, and the inspection and repair of the swing motor 1 are performed from this portion. You can do it. Further, since the turning motor 1 is disposed at a position away from the rear engine E, when the turning motor 1 is inspected and repaired, burns are 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 is a plan view showing the configuration of step 2 and a spare entrance a of the revolving excavator.

FIG. 6 is a plan view showing an arrangement of a swing motor 1, a step 2, and a driver's seat 15.

FIG. 7 is a plan view showing the configuration of the revolving frame 19.

[Explanation of symbols]

 a Preliminary entrance / exit b Slope c Lift / lift 1 Rotating motor 2 Step 3 Fuel tank 4 Hydraulic oil tank

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Takuzo Kawamura 1-32 Chayacho, Kita-ku, Osaka-shi, Osaka Inside Yanmar Diesel Co., Ltd. (56) References JP-A-5-125744 (JP, A) Hei 1-9023 (JP, A) Actually open Hei 1-661 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) E02F 9/16 E02F 9/00 E02F 9/08

Claims (2)

(57) [Claims] 1. An operation column 25 is erected at a front portion, and a driver's seat 1 is provided at a rear portion of the operation column 25 with an interval of step 2 therebetween.
5 in the swiveling excavation work vehicle, the driver's seat 15
One side of the driver's seat 15 is opened at the end of step 2 when viewed from the
The hydraulic oil tank 4 is arranged, and a heavy
The fuel tank 3 is arranged in a duplicated state, and the hydraulic oil tank 4
The inclined surface b in the plan view in the front part of
And a preliminary entrance a between the inclined surface b and the operation column 25.
And above the hydraulic oil tank 4 and the fuel tank 3
Cover with bonnet 22 and on top of bonnet 22
A handle to be gripped when the operator gets on and off from the preliminary entrance a
23. A swiveling excavator, comprising: 2. A swiveling excavation work vehicle according to claim 1.
Step 2 is configured to be detachable.
The turning motor 1 for turning the turning frame 19 is
A swiveling excavator, characterized by being arranged .