JPH06306889A - Ditching excavator - Google Patents

Abstract

PURPOSE:To improve the extent of operability by installing a conveyor, conveying excavated earth and sand to the rear upper part of an excavator, in a driver's cab side part free of slide motion in a forward tilting position, charging the excavated earth and sand into this conveyor, and conveying it onto a truck's rear body at the rear. CONSTITUTION:A bucket 8 having excavated earth and sand is uplifted to a position a little higher than a ground surface in front of a driver's cab. Next, the bucket 8 is slightly turned and shifted up to the front end upper part of a conveyor 9, and the earth and sand is charged onto a belt of the conveyor 9 to be operated, thereby loading it on a rear body 12 of a truck. In succession, in the case where this conveyor 9 is not used, it is slide and stored in the rear side upper part of an excavator 1, and it is recommended that this conveyor is and so as not to hinder its movement and traveling. In addition, as occasion arises, a measure-form soil charging part 10 is attached to a front end of the conveyor 9 free of detachment, through which the earth and sand is made so as not to overflow from the conveyor. With this constitution, operation can be done safely and easily by merely swinging an arm a little sideways, while execution of works can be done even in a narrow place, and safety personnel and conveyor expenditure are all reducible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator for digging a trench, which is equipped with a conveyor for loading the earth and sand produced when excavating a gutter or the like directly onto a truck bed or the like.

[0002]

2. Description of the Related Art Conventionally, an excavator such as a tractor excavator used for excavating a ditch is provided with a moving crawler portion or a large-diameter wheel on both lower sides of a base, while a base is provided. The driver's cab and the drive unit are installed on the upper surface of the platform, and the rear end side of the arm that is formed so that it can be folded and expanded is attached at an appropriate position such as the lower front of the driver's cab. A bucket for excavation is attached to the tip of the bucket so as to be swingable in the front-rear direction.

For example, when excavating a gutter with such a conventional excavator, the bucket is operated while the excavator is traveling backward along the gutter to be excavated to excavate earth and sand, and the excavated earth and sand is excavated in the gutter. The bucket is swung on the side of the truck, or the bucket is swung on the bed of the truck to directly load the excavated earth and sand.

[0004]

However, in the case of the former, the excavation work is a work of loading the earth and sand piled up on the side of a gutter or the like on the bed of a truck by using a separately installed conveyor. Since it was necessary separately, excavation work and loading work were separate and extremely inefficient methods.

On the other hand, in the latter case, the bucket is lifted above the operator's cab and turned to the right or left by manipulating the arm of excavated earth and sand or the like that has been excavated and is still in the bucket. For the purpose of ensuring safety for passers-by and other vehicles, security personnel should be placed at least before and after the work area for the purpose of ensuring safety for passers-by and other vehicles, and pass through this area. Although people and vehicles are blocked or diverted from traffic, there are problems such as traffic being interrupted during work and detours hinder smooth traffic, and the cost of security personnel cannot be ignored. there were.

In view of the above problems, the present invention does not require that a bucket containing excavated earth and sand be lifted and swung to a large extent, and that excavated earth and sand is transported very efficiently and safely. It is an object of the present invention to provide a new trench excavator having both excavation and loading functions that can be loaded on a truck bed.

[0007]

The structure of the present invention, which has been made for the purpose of solving the above problems, has a base and a black
In an excavator equipped with a traveling means such as a la, a driving unit, a driver's cab, and an arm provided with a bucket, the excavated earth and sand is transported to the upper side of the rear of the excavator to the side of the operator's cab. The conveyor is provided so as to be slidable forward and backward in a forwardly tilted posture.

[0008]

[Operation] In the excavator of the present invention, since the conveyor is provided on the side portion of the operator's cab in a posture in which the conveyor is tilted forward, the earth and sand excavated into the bucket is lifted up by the bucket, and The bucket can be mounted on the front part of the attached conveyor by moving the bucket slightly to the left or right within a range where the operator in front of the operator's cab can be visually observed without turning in that position, and the excavator can be mounted by the conveyor. It can be transported as it is to the bed of a truck located in the rear part and quickly loaded. Also, since the conveyor can be slid upward on the rear side of the trench excavator,
It does not get in the way when moving the excavator.

[0009]

EXAMPLES Next, examples of the present invention will be described with reference to FIGS. FIG. 1 is a side view showing an example of a groove excavator of the present invention, and FIG. 2 is a plan view of the same.

In the figure, 1 is an example of a trench excavator of the present invention, 2 is the base of the excavator 1, and 3 and 3 are the bases 2.
The moving crawlers 4 provided parallel to each other on the lower both sides of the cradle as an example of traveling means in parallel with each other are base mount portions to which the crawlers 3 and 3 on the left and right sides are mounted, and the base 2 is It is rotatably mounted on the base mounting portion 4. The base mounting portion 4 is provided with a transmission mechanism for driving the crawlers 3 and 3 on both sides, for example, a hydraulic circuit (not shown). The traveling means may be a wheel.

Reference numeral 5 denotes a driver's cab provided on the upper surface of the base 2 on the right side when viewed from the front, and 6 denotes a drive unit provided at the rear of the base 2, which internally drives the rollers 3, 3 and the base 2 There is provided a prime mover, a transmission mechanism, and the like, which serve as a drive source for turning, the arm 7, the bucket 8, and the like, which will be described later.

Reference numeral 7 denotes an arm portion composed of a first arm member 7a, a second arm member 7b, a third arm member 7c and a joint member 7d. Here, the rear end of the second arm member 7b has a broken line arrow in FIG. As shown by Q, the first arm member 7a is attached to the tip end of the first arm member 7a by a vertical axis V1 so as to be swingable right and left, and the joint member 7d is attached to the tip end of the second arm member 7b by a vertical axis V2. There is. And
The front end of the joint member 7d and the rear end of the third arm member 7c are connected by a horizontal axis h1. The rear end of the first arm member 7a is attached to the center of the front part of the base 4 so as to be vertically movable by a horizontal shaft (not shown).

Although not shown, the arm portion 7 includes a front end of the first arm member 7a, a rear end of the second arm member 7b, and a second arm member 7b.
Is a vertical in-plane folding type in which the front end of the first arm member 7c and the rear end of the third arm member 7c are connected by horizontal shafts, and the rear end of the first arm member 7a is formed on the front part of the base 2. The structure may be such that it is attached to the tip of the arm support so that it can swing to the left and right by a vertical axis.

Reference numeral 8 is a bucket attached to the tip of the arm portion 7, that is, the tip of the third arm member 7c by a horizontal shaft 71c, and the opening 8a is at least centered on the shaft 71c of the tip of the third arm member 7c. It is formed so that it can swing within a range of about 180 degrees. Note that 8b is a claw portion for excavation provided at the tip of the bucket 8.

The first arm member 7a, the second arm member 7b, the third arm member 7c, and the joint member 7d which constitute the arm portion 7 include members 7a, 7b, 7b.
Along the lengthwise direction of c and 7d, hydraulic cylinders P1 and P respectively.
2, P3, P4, P5 are installed, of which hydraulic cylinder P
1 is for moving the arm 7 up and down with respect to the base 2, and hydraulic cylinder P2 is for moving the third arm member 7c back and forth or up and down with respect to the second arm member 7b and joint member 7d, hydraulic pressure. The cylinder P3 is for swinging the direction of the opening 8a or the claw 8b of the bucket 8 at the tip of the third arm member 7c. Also,
A hydraulic cylinder is provided on the left and right between the second arm member 7b and the joint member 7d.
P4 and P5 are installed and these hydraulic cylinders P4 and P5
Although the second arm member 7b can swing to the left and right with respect to the first arm member 7a by P5, the joint member 7d, the third arm member 7c, and the bucket 8 hold a direction parallel to the first arm member 7a. It will be.

Reference numeral 9 denotes a conveyor which is attached to the right side (left side when viewed from the front) of the operator's cab 5 with the first arm member 7a being sandwiched on the upper surface of the base 2, and which is provided with soil and the like excavated by the bucket 8 as described above. It is for carrying to the upper rear side of the excavator 1. This conveyor 9 is provided with the above-mentioned bucket 8 so that the side groove T
During excavation, the front end side is moved forward of the crawler 3 and the rear end side is positioned rearward and upper side of the drive unit 6 so that the drive unit 6 is forwardly moved. That is, as shown by the arrow R in FIG. 1, the conveyor 9 is slid and stored in the upper rear part of the excavator 1 when not in use, and when the excavator 1 is moved to another excavation site, it is excavated. It is slid to the upper rear side of the base 2 and fixed at that position so as not to interfere with the movement and traveling of the machine 1. It should be noted that the positions of the conveyor 9 and the driver's cab 5 on the base 2 may be right and left reversed. Further, the forward tilting angle of the conveyor 9 in the forward tilting posture may be arbitrarily changed around the side portion of the operator's cab 5.

Reference numeral 10 is a removable section provided on the front end side of the conveyer 9 for putting in sand and the like in the form of a mesh. The earth and sand thrown into and dropped from the bucket 8 to the front end side of the conveyor 9 is in front of and on the side of the conveyor 9. This is to prevent it from overflowing. Reference numeral 11 denotes a shunt provided at the rear portion of the conveyor 9 for reliably loading earth and sand or the like conveyed by the conveyor 9 onto the loading platform 12 of the transportation truck. This shot
As shown by an arrow S in FIG. 2, the tip side can be rotated left and right on the truck bed 12, so that the sand and the like can be loaded in the width direction of the truck bed 12 evenly. I am trying. Further, this shunt 11 can be folded and stored on the upper surface side of the conveyor 9 so as not to be an obstacle when moving the trench excavator 1. The shoot 11 may be detachably provided on the conveyor 9.

An example of the structure of the excavator 1 for trench digging according to the present invention is as described above, and the bucket 8 is provided on the upper portion of the gutter T where the operator operates the arm member 7 from the driver's cab 5 to excavate. By moving the claw portion 8b of the bucket 8 downward and tilting the arm portion 7 downward while swinging the claw portion 8b back and forth to excavate the gutter T, and the excavated earth and sand is removed from the bucket 8
On the front side of the operator's cab 5 to a position slightly higher than the ground surface, and then swung above the front end of the conveyor 9 as indicated by the dashed arrow Q in FIG. By dropping and dropping onto the belt, it can be loaded on the cargo bed 12 of the truck as it is.

[0019]

The trench excavator of the present invention is as described above, and since it has both the excavator mechanism for excavation and the conveyer mechanism for transportation, it can excavate gutters and the like very efficiently. it can.

According to the trench excavator of the present invention,
You do not have to lift the bucket with excavated earth and sand up above the operator's cab and turn it, just swing the arm part to the left or right within the range where the operator in front of the operator's cab can be seen. It is extremely safe to operate, so
Fatigue can also be reduced without imposing an extra mental burden on the equipment other than excavation and loading work.

Further, with the trench excavator of the present invention, two operations of excavation and transportation are possible even if the work area is narrow,
Moreover, since both operations can be performed by one machine,
For example, when it is used for road construction, these works can be performed without completely blocking the road and without arranging security personnel while keeping the road on one side.

In addition, since the excavator for excavation trenches of the present invention has both the excavator mechanism for excavation and the conveyor mechanism for transportation, the excavator and the conveyor for transportation are separately purchased as in the conventional case. Compared with the case, the purchase cost can be reduced.

In particular, in addition to the above-mentioned effects, the excavator of the present invention is provided with a conveyer conveyor slidably on an empty space on the upper surface of the base on the opposite side of the operator's cab, so that the excavator can be self-propelled. There is a special effect that the conveyor does not get in the way when the conveyor is not used for moving or the like.

[Brief description of drawings]

FIG. 1 is a side view showing an example of a groove excavator of the present invention.

FIG. 2 is a plan view of the trench excavator shown in FIG.

[Explanation of symbols]

 1 Excavator for trench digging 2 Base 3 Crawler 4 Base mounting part 5 Driver's cab 6 Motor 7 Arms 8 Bucket 9 Conveyor 10 Loading part 11 Shot 12 Loading platform T Gutter

Claims (3)

[Claims] 1. An excavator equipped with a traveling means such as a crawler, a drive unit, a driver's cab, and an arm portion provided with a bucket on a base, and excavated earth and sand or the like on the side of the operator's cab. An excavator for trench digging, comprising a conveyor for transporting the above to the upper rear side of the excavator so as to be slidable forward and backward in an inclined posture. 2. The excavator for trench digging according to claim 1, wherein the conveyor has an input section for earth and sand or the like on a front end side thereof, and a shunt capable of being folded and stored at a rear section thereof. 3. The trench excavator according to claim 1 or 2, wherein the forward tilt angle of the forward tilted conveyor is changeable.