JPH10280462A - Excavation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently perform a deep excavation through concurrent and multilayer excavation even with a bucket wheel of a small radius, efficiently excavate a wide area of excavation surface concurrently for a thin layer excavation, and eliminate the need of enlarging an excavation device as in the case of using an excavation device of a large radius bucket wheel. SOLUTION: An excavation device has a machine body 1 capable of moving via a travel device 1a, and a bucket wheel support frame body 8 is held on the forward end of a ladder 2 having a base end held on the machine body 1 in such a state as controllable against a vibration. Furthermore, a plurality of front and rear stages of bucket wheels 4 and 5 are held on the bucket wheel support frame body 8, for example, so as to be adjustable in height relative to each other with a bucket wheel elevator mechanism 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator which can be used for excavating a ground or other excavated portion or for dredging an object to be dredged such as sedimentary soil.

[0002]

2. Description of the Related Art FIG. 2 shows a side view of a conventional excavator. In the figure, a base end side of a rudder 12 is supported via a rudder turning mechanism 13 on a body 11 of an excavator that can travel by a traveling device 11a. A bucket wheel supporting frame 16 that is held at an optimum elevation position by a supporting mechanism 15 is supported on the tip end side of the ladder 12. The bucket wheel 14 is driven by a driving device on the bucket wheel supporting frame 16. It is rotatably supported. During the excavation work, the bucket wheel 14 is driven and rotated while driving the traveling device 11a to move the body 11 and the bucket wheel 14 is turned by the control of the rudder turning mechanism 13 in accordance with the excavation state of the object to be excavated. Then, the object to be excavated is excavated by the bucket mounted on the outer peripheral portion of the bucket wheel 14.

[0003]

By the way, when digging with the bucket wheel 14, the larger the radius of the bucket wheel 14 is, the more efficiently it can dig a wide area in the case of deep digging. 1
It is conceivable to increase the radius of the bucket wheel 14, but if the radius of the bucket wheel 14 is increased, the excavator becomes larger, the range of excavation is limited, and in the case of thin layer excavation in which a thin portion is excavated. Instead, the efficiency is reduced.

[0004] Therefore, the present invention is to make it possible to keep the excavable area wide by using a bucket wheel having a small radius, and to efficiently perform deep excavation even if the radius of the bucket wheel is small. And, in the case of thin layer drilling, to be able to drill efficiently over a wide drilling surface at the same time,
In addition, the digging device does not require a large digging device as in the case of using a bucket wheel having a large radius, although efficient digging work can be performed for both deep digging and thin layer digging. It is intended to provide a device.

[0005]

In order to solve the above-mentioned problems, an excavator according to the present invention is provided with a rudder having a base end supported by a movable airframe so as to be swingable with respect to the airframe. , A plurality of bucket wheels are supported so that relative height control between them is possible.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1A is a side view of an excavator according to one embodiment of the present invention, and FIG.
FIG. 2 is a side view of the excavator of FIG. 1 (1) in a working mode different from (1).

First, in FIG. 1, the excavator has an airframe 1 which can travel by a traveling device 1a. The body 1 is supported by the traveling device 1a so as to be able to turn around the vertical axis with respect to the traveling device 1a so as to be able to face any direction regardless of the direction of the traveling device 1a. Aircraft 1
, The base end side of the rudder 2 is supported via a rudder swinging mechanism 3 so as to be swingable. The rudder 2 has at least one of a turning motion in a horizontal direction and a undulating motion in a vertical direction with respect to the machine body 1 by a swing control operation of an operating mechanism having, for example, a fluid pressure cylinder of the rudder swing mechanism unit 3. Exercise or both exercises linked to each other.

[0008] A bucket wheel support frame 8 is supported on the tip side of the ladder 2 via a support mechanism 7. The support mechanism unit 7 attaches the bucket wheel support frame 8 to the rudder 2 so that the bucket wheel support frame 8 can swing up and down relative to the rudder 2 by, for example, a fluid pressure operation mechanism. It supports so that relative movement is possible. The bucket wheel support frame 8 supports a plurality of front and rear bucket wheels 4 and 5, for example, two front and rear bucket wheels 4 and 5, as shown in the drawing, so as to be capable of driving rotation. The bucket wheel 5 at the subsequent stage is supported by a bucket wheel lifting / lowering mechanism 6 supported by a bucket wheel support frame 8 so that the height position can be controlled relative to the bucket wheel 4 at the preceding stage.

The bucket wheels 4 and 5 of the front and rear plural stages are
Since it is only necessary to control the relative height between the bucket wheels, instead of moving the bucket wheel 5 up and down by the bucket wheel lifting mechanism 6, the bucket wheel lifting mechanism 6 is attached to the bucket wheel 4 side, and the bucket wheel 4 may be raised and lowered, and a lifting mechanism may be attached to the bucket wheel 4 and the bucket wheel 5, respectively, and the relative movement between the bucket wheel 4 and the bucket wheel 5 may be performed by the cooperation of the lifting mechanisms. Height control may be performed. Further, the frame supporting the bucket wheel 4 and the bucket wheel 5 is rotated in a vertical plane with respect to the support mechanism 7 or the bucket wheel support frame 8, so that the bucket wheel 4 and the bucket It is also possible to configure such that relative height control between the wheels 5 is performed.

When excavating a thin layer with the bucket wheels 4 and 5, the bucket wheels 4 and 5 are set at the same level as shown in FIG.
The ladder rocking mechanism 3 adjusts the ladder 2 to adjust the digging depth of the bucket wheels 4 and 5, and then pivots the body 1 about the vertical axis with respect to the traveling device 1a. Whether the wheels 4 and 5 are moved in the horizontal direction, or the rudder 2 is turned in the horizontal direction with respect to the body 1 by the operation of the rudder swinging mechanism 3 to move the bucket wheels 4 and 5 in the horizontal direction. Thus, for each horizontal swinging motion of the rudder 2, thin layer excavation can be efficiently performed over a much wider excavation surface than when excavating with one large-diameter bucket wheel.

When deep excavation is performed by the bucket wheels 4 and 5, as shown in FIG. 1B, the bucket wheels 4 and 5 are brought to different height levels, for example, as shown in FIG. When digging forward as in the case, the position of the rear-stage bucket wheel 5 is set to a lower position with respect to the front-stage bucket wheel 4, and the ladder swing mechanism 3 adjusts the ladder 2 up and down. After adjusting the excavation depth of the bucket wheels 4 and 5, the body 1 is turned around the vertical axis with respect to the traveling device 1 a to move the bucket wheels 4 and 5 in the horizontal direction, or By operating the rudder swinging mechanism 3, the rudder 2 is turned horizontally with respect to the body 1 to move the bucket wheels 4, 5 in the horizontal direction.
Deep excavation by layer excavation can be performed efficiently.

A transport means such as a belt conveyor is disposed along the ladder 2 between the ladder swinging mechanism 3 and the supporting mechanism 7 and is excavated by bucket wheels 4 and 5.
The scraped-up excavated object may be transferred to the transporting means, and further transported to the excavated object temporary accommodating portion provided in the machine body 1 by the transporting means.

The number of stages of the bucket wheel is not necessarily limited to the front and rear two stages like the bucket wheels 4 and 5, and may be, for example, three or more stages. Since such a plurality of stages of bucket wheels are supported so that relative height control can be performed between them, a small radius bucket wheel can be adopted, and a small radius bucket wheel is used. In this way, the excavation area can be kept wide, and deep excavation can be efficiently performed as a simultaneous multi-layer excavation over a wide excavation area. Excavation can be performed efficiently over a wide area, and efficient excavation work can be performed both in deep excavation and thin layer excavation. There is no need to increase the size.

[0014]

According to the excavator of the present invention, a plurality of bucket wheels are provided at the tip end of a rudder whose base end is supported by the movable body so as to be swingable with respect to the aircraft. The use of a small radius bucket wheel allows the excavation area to be kept wide, and allows deep excavation even when the bucket wheel radius is small. Simultaneous multi-layer excavation enables efficient excavation over a wide excavation area, and in the case of thin-layer excavation, efficient excavation over a wide excavation surface at the same time. Despite being able to perform good excavation work, the excavator does not need to be large as in the case of using a bucket wheel having a large radius. ).

[Brief description of the drawings]

FIG. 1 (1) is a side view of an excavator according to one embodiment of the present invention, and FIG. 1 (2) is an excavator of FIG. 1 (1) in a working mode different from that of FIG. 1 (1). It is a side view of an apparatus.

FIG. 2 is a side view of a conventional excavator.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Airframe 1a Traveling device 2 Ladder 3 Ladder turning mechanism unit 4 First bucket wheel 5 Second bucket wheel 6 Bucket wheel elevating mechanism unit 7 Support mechanism unit 8 Bucket wheel support frame 11 Airframe 11a Traveling device 12 Ladder 13 Rudder swing Motion mechanism 14 Bucket wheel 15 Support mechanism 16 Bucket wheel support frame

Claims (1)

[Claims] 1. A plurality of bucket wheels at the tip end of a rudder whose base end is supported by a movable body so as to be capable of swinging control with respect to the body, and a relative height between the bucket wheels can be controlled. Drilling rig, characterized in that it is supported by a drilling rig.