JPH06185292A - Excavating machine - Google Patents

Abstract

PURPOSE:To inhibit noise and vibration and excavate continuously by mounting a disk cutter having a large number of claws to a main arm and expanding the main arm with an expansion drive device in its longitudinal direction and rotating the main arm around its axis with a rotary drive device. CONSTITUTION:An excavator 1 is designed to move with a caterpillar 12 and fixed so as to prevent its movement during excavation work by pressing the machine against the wall surface of a tunnel with a fixture 13. When a main arm 3 is extended in the direction of its cutting face with an expansion drive device 33 while rotating a disk cutter 2, claws 21 on the circumferential surface excavate an excavation surface, thereby forming a groove whose width is equivalent to the thickness of the disk cutter 2. Excavation work is carried out by changing the direction of the disk plane by means of a rotary drive device 34 for the main arm 3. On the other hand, when the plane of the disk cutter 2 is laid out vertically, if the main arm 3 moves vertically under the control of the expansion of two support arms 35, the claws 21 will excavate a groove in its longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator for excavating rock or the like.

[0002]

2. Description of the Related Art Conventionally, when excavating a rock tunnel or the like, the steps of drilling, blasting, and skidding are set as one cycle.
I'm repeating.

[0003]

However, the conventional method has the following problems. <A> Drilling, blasting, and skiving are always dangerous operations. <B> Drilling, blasting, and scraping work cause problems such as noise and vibration.

[0004]

It is an object of the present invention to provide an excavator for excavating rock or the like with a rotary cutter.

[0005]

DISCLOSURE OF THE INVENTION The present invention relates to an excavator for rotating and excavating a disc cutter, and a pawl provided on a circumferential surface and a side surface of the disc cutter and the disc cutter rotatably held. A main arm, a telescopic drive device that axially expands and contracts the main arm, a rotary drive device that rotates the main arm around an axis, and a support arm that changes the direction of the main arm. It is in a characteristic excavator.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. <A> Excavator 1 The excavator 1 rotates the disc cutter 2 attached to the main arm 3 to excavate a rock tunnel or the like. The main body 11 of the excavator has a driving function of a motor, an engine, a hydraulic motor, and the like, and is moved and rotated by wheels, a caterpillar 12, and the like. At the time of excavation, the excavator 1 is fixed in the tunnel by pushing the ceiling, wall surface, etc. of the tunnel with the fixture 13. The excavated earth and sand is placed on the conveyor belt 14 from the front of the excavator 1, transported to the rear, placed on a truck or the like, and discharged outside the tunnel.

<B> Disc Cutter 2 The disc cutter 2 has a large number of claws 21 for excavating the ground on the circumferential surface and side surfaces of a disk-shaped disk. The disc cutter 2 excavates by rotating around the central axis of the disc. For example, it rotates at 15 rpm. The diameter of the disc cutter 2 is, for example, about 431 mm, but the size is arbitrarily determined depending on the object of excavation. The claws 21 on the circumferential surface of the disk cutter 2 excavate the ground in the circumferential direction. Excavations are formed in the ground at intervals of the width of the circumferential surface. The side claws 21 are used for excavating the ground in the side surface direction of the disk (direction orthogonal to the disk surface). The side claws 21 are provided up to a certain distance from the circumferential surface toward the center. Therefore, the excavation groove can be expanded by the depth of the constant distance, and thus the face can be excavated in a planar shape.

<C> Main Arm 3 The main arm 3 comprises a front arm 31 and a rear arm 32, and the disc cutter 2 is rotatably attached to the front arm 31. The rotational driving force around the rotation axis of the disc cutter 2 is given by a known means via the main arm. The front arm 31 is attached to the rear arm 32 by a telescopic drive device 33 so as to be axially telescopic. Further, all the arms 31 are attached to the rear arm 32 by a rotation drive device 34 so as to be rotatable around the axis of the main arm 3. Therefore, the disc cutter 2 rotates about the rotation axis, and the direction of the disc surface can be changed by the rotation drive device 34 of the main arm while excavating the ground. Further, it is also possible to move the disk cutter 2 back and forth by the expansion / contraction drive device 33 without moving the excavator 1. The other end of the rear arm 32 is attached to a rotating shaft 36 rotatably held by the excavator body 11. Two support arms 35 are rotatably attached to the middle of the axis of the rear arm 32, and the main arm can be driven up and down. The other end of the support arm 35 is rotatably attached to the rotary shaft 36, similarly to the rear arm. The rotary shaft 36 is rotationally driven by a gear or the like. Therefore, the main arm 3 can be changed in any direction by the expansion and contraction operation of the two support arms 35 and the rotation operation of the rotary shaft 36.

The operation of the excavator will be described below. <A> Excavation in the axial direction of the main arm The excavator 1 is moved to a predetermined position by the caterpillar 12, and the wall surface of the tunnel is pressed by the fixture 13 so that the excavator 1 is fixed so as not to move during excavation. After that, when the main arm 3 is extended in the face direction by the expansion / contraction drive device 33 while rotating the disk cutter 2, the claws 21 on the circumferential surface excavate the excavation surface, and the width of the thickness of the disk cutter 2 increases. Forming a groove in the ground.

<B> When the surface of the excavating disk cutter 2 on the plane orthogonal to the main arm is vertically arranged, 2
When the main arm 3 is moved in the vertical direction by controlling the expansion and contraction of the book support arm 35, the longitudinal groove can be excavated by the claw 21 on the circumferential surface of the disk cutter 2. When the rotary shaft 36 is rotationally driven to move the main arm 3 in the horizontal direction, the claw 21 on the side surface of the disc cutter 2 can form a face into a planar shape. The claw 21 of the disc cutter 2 is also provided on the side surface, and the disc cutter 2 is oriented in an arbitrary direction by controlling the rotation drive of the expansion and contraction drive device, the rotation drive device, the two support arms 35, and the rotation shaft 36. Therefore, excavation of any shape is possible.

[0011]

According to the present invention, the following special effects can be obtained. <B> Since a disc cutter is used, noise and vibration are suppressed, enabling continuous excavation. <B> By controlling the expansion and contraction of the support arm and providing the claws on the side surface of the disc cutter, it is possible to dig in all directions in the front-rear, left-right and up-down directions.

[Brief description of drawings]

FIG. 1 is a structural diagram of a rotary excavator for a disc cutter.

Claims (1)

[Claims] 1. An excavator for rotating and excavating a disc cutter, a claw provided on a circumferential surface and a side surface of the disc cutter, a main arm for rotatably holding the disc cutter, and the main arm. An excavator, comprising: a telescopic drive device that extends and contracts in the axial direction, a rotary drive device that rotates the main arm around an axis, and a support arm that changes the direction of the main arm.