JPH07292710A - Excavating attachment - Google Patents

Abstract

PURPOSE:To improve efficiency of an excavating work by conducting excavation by means of excavating hoppers, and leading the excavated earth and sand scooped to a collecting tank through screw conveyors, a suction nozzle, and a suction hose. CONSTITUTION:By bending and derricking an arm 1, an excavating attachment A on the extreme end is moved to a desired excavating position, and excavating hoppers 4a, 4b are driven to rotate for excavation. At this time, excavated earth and sand are scooped with the excavating hoppers 4a, 4b, and slipped down to screw conveyors 5a, 5b having helical steel plates of which winding directions are mutually reversed right and left. Next, the earth and sand are sent to a suction nozzle 3 arranged on the center part of a rotary supporting shaft 2 by the screw conveyors 5a, 5b. Next, they are sucked from the suction nozzle 3 to a suction hose 6, and sent to the collecting tank of a suction vehicle therethrough.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavation attachment for excavating earth and sand excavated by using vacuum suction.

[0002]

2. Description of the Related Art Generally, a self-propelled excavator excavator such as a backhoe used in excavation work such as pipe burial work is constructed by mounting a driver's seat having a drive source on a crawler type traveling carriage. For example, a well-known backhoe body supports a bendable arm so that it can be raised and lowered, and a bucket is attached to the tip of this arm so that the bucket can swing by an excavating cylinder. After undulating with respect to the main body to move the bucket to a desired position, excavation is performed by rocking the bucket with an excavation cylinder.

Conventionally, the earth and sand excavated by the above-mentioned excavating machine is
For example, a suction hose extending from a collection tank of a known vacuum suction vehicle with a collection tank is manually operated to suck the suction hose into the collection tank.

[0004]

By the way, conventionally, since the above-mentioned suction hose functioning as a suction path for earth and sand is manually operated, when the diameter of the suction hose is small, the suction hose is manually moved to a desired position. However, when a large vacuum suction truck with a recovery tank is used due to the large amount of soil and sand, the diameter of the suction hose is correspondingly increased. It is difficult to operate the suction hose manually because of the pulsation.

Therefore, in recent years, a suction hose extending from a recovery tank of a vacuum suction vehicle with a recovery tank is connected to a bucket of an excavating machine to excavate with the bucket, and at the same time, the earth and sand scooped in the bucket by the excavation with the suction hose. Although suction is applied to the entire bucket, the suction force does not reach the entire bucket, so the soil in the areas where the suction force of the bucket does not reach remains unsucked, and the rate of this unsucked sediment is high, which increases work efficiency. There is a problem of causing a large decrease.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an excavation attachment for improving the efficiency of excavation work.

[0007]

In order to achieve the above-mentioned object, the present invention provides, in a central part of a rotary support shaft which is rotatably driven by an appropriate rotary driving means, and which is rotatably driven by an end of an arm of an excavating machine. While supporting a suction nozzle connected to an appropriate vacuum suction means via a suction hose, an excavation hopper is provided on both sides of this suction nozzle, which is rotationally driven by an appropriate rotation drive means with the rotation spindle as the rotation center. A screw conveyor having a left-handed and right-handed screw is arranged at the center of rotation of each of the excavating hoppers.

[0008]

According to the present invention, excavation is carried out by rotating the excavating hopper, and the excavated earth and sand is scooped up by the excavating hopper and slid down to the screw conveyor as the excavating hopper is rotationally driven. And send it to the suction nozzle in the center and suck it with the suction hose.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. However, FIG. 1 is a schematic side view showing a tip portion of an arm of a self-propelled excavator excavating machine using the excavation attachment according to the present invention, and FIG. 2 is a schematic bottom view of the excavation attachment according to the present invention.

As shown in FIGS. 1 and 2, an excavation attachment (A) according to the present invention is provided, for example, at the tip of an arm (1) of a self-propelled excavator excavator such as a backhoe.
Mounted in place of traditional buckets.

The excavation attachment (A) is a rotary drive means (such as a hydraulic drive motor) between the left and right side wall plates (1a) and (1b) at the tip of the arm (1) of the self-propelled excavator excavator. A rotary support shaft (2) rotatably driven by an unillustrated) is mounted on the shaft, and a suction nozzle (3) is rotatably supported at the center of the rotary support shaft (2), and both sides of the suction nozzle (3) are supported. In addition, 180 digging hoppers (4a) and (4b) are rotatably driven by a rotation drive means (not shown) such as a hydraulic drive motor around the rotation support shaft (2) as a rotation center.
° This excavation hopper (4a) is installed with the rotation angle shifted.
A screw conveyor (5a) (5a) (5a) (5a) formed by projecting spiral steel plates from the intermediate portion of the rotation support shaft (2) spaced at timely intervals to the opposite ends of the rotation center portion of (4b) over both ends.
b) is provided, and the suction nozzle (3) is connected to a suction hose (6) extending from a recovery tank (not shown) of a vacuum suction vehicle with a recovery tank.

Next, the operation of the self-propelled excavator excavating machine using the excavation attachment (A) of the present invention will be described based on the above configuration.

First, the vacuum suction device of the vacuum suction truck with a recovery tank is operated to apply a suction force to the suction hose (6), and at the same time, the rotary drive means such as a hydraulic drive motor is operated to operate the excavation hopper (4a). (4b) and the screw conveyors (5a) and (5b) are rotationally driven.

After that, when the arm (1) of the self-propelled excavator excavating machine is flexed freely and is undulated with respect to the main body, the excavation attachment (A) at its tip is moved to a desired excavation position. The excavation is performed by rotationally driving the excavation hoppers (4a) (4b). The earth and sand excavated by the excavation hoppers (4a) and (4b) are scooped up by the excavation hoppers (4a) and (4b), and the screw conveyors (5a) are rotated as the excavation hoppers (4a) and (4b) rotate. ) (5
Slide down to b), each of these screw conveyors (5
a) (5b) is sent to the suction nozzle (3) arranged at the central portion, and is sucked from the suction nozzle (3) to the suction hose (6) and passes through the suction hose (6) and is provided with a recovery tank. It is sent to the collection tank of the vacuum suction car.

Drilling attachment (A) according to the present invention
Is the screw conveyors (5a) (5) associated with the rotation driving of the excavation hoppers (4a) (4b) for the earth and sand excavated by the excavation hoppers (4a) (4b).
At the same time as it slides down to b), it is sent to the suction nozzle (3) by each screw conveyor (5a) (5b), so the soil may remain unsucked in the bucket as in the conventional case. The excavated earth and sand can be efficiently sucked into the collection tank of the vacuum suction car with the collection tank.

[0016]

As described above, according to the present invention,
Since the excavated earth and sand is positively sent to the suction nozzle by the excavation hopper and the screw conveyor, the earth and sand can be efficiently sucked into the recovery tank of the vacuum suction car, and the efficiency of excavation work can be improved. It has excellent features such as being able to.

[Brief description of drawings]

FIG. 1 is a schematic side view showing a tip portion of an arm of a self-propelled excavator excavating machine using an excavation attachment according to the present invention.

FIG. 2 is a schematic bottom view of a drilling attachment according to the present invention.

[Explanation of symbols]

 A Excavation Attachment 1 Arm 2 Rotating Spindle 3 Suction Nozzle 4a Excavation Hopper 4b Excavation Hopper 5a Screw Conveyor 5b Screw Conveyor 6 Suction Hose

Claims (1)

[Claims] 1. A central portion of a rotary support shaft mounted on the tip of an arm of an excavating machine so as to be rotationally driven by an appropriate rotary drive means, and connected via an appropriate vacuum suction means and a suction hose. An excavation hopper that supports a suction nozzle and is rotationally driven by an appropriate rotation drive means with the above-mentioned rotation support shaft as the rotation center is disposed on both sides of the suction nozzle, and the left and right opposite windings are wound around the rotation center portions of the respective excavation hoppers. An excavation attachment, characterized in that a screw conveyor having a spiral steel plate is disposed in the.