JPH0650077A - Earth-moving device of earth auger - Google Patents

Abstract

PURPOSE:To automatically and cleanly remove mud and earth attached to the blades of a screw auger. CONSTITUTION:An endless chain 10 which moves parallel to the drive shaft 5 of a screw auger 4 is mounted on an earth moving machine 8 and a plurality of vertical earth moving plates 12 each having a side edge 12a extending along the drive shaft 5 are mounted at intervals of blade pitches 9 the endless chain 10. The vertical movement of the screw auger 4 causes the endless chain 10 to move in the same direction via the earth moving plate 12 disposed between the blades 6, 6 of the auger.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soil discharging device for removing mud adhered to the blade of an earth auger machine used for excavating the ground in foundation pile construction for embedding ready-made concrete piles. Regarding

[0002]

2. Description of the Related Art As shown in FIG. 4, an earth auger machine 1
Is a structure in which a screw auger 4 is vertically arranged in parallel with a leader 3 standing upright at the tip of a crawler 2, and the screw auger 4 has a structure in which blades 6 are spirally attached to the outer periphery of a drive shaft 5. The ground is excavated by rotating and lowering the screw auger 4 by a motor 7 installed on the upper end of the screw auger 4. When the screw auger 4 is pulled up, the screw auger 4 is usually rotated in the reverse direction to be raised.
Mud adheres to the surface of the wing and between the blades 6 and 6 until it adheres. Therefore, it is necessary to remove this mud before pre-boring again, but in the past, this was manually removed by a person using a scoop or the like.

[0003]

However, in the conventional method of manually removing the surface of the blade 6 of the screw auger 4 and the mud adhered between the blade 6 and the blade 6, the screw auger 4 is rotated. Since it is rising, it is very difficult to remove the mud cleanly, and it is dangerous that the worker gets caught in the rotating screw auger 4 or the mud that falls falls on the worker. There were various problems.

[0004]

The present invention has been made to solve the above-mentioned conventional problems, and it automatically and cleanly removes the mud adhered to the blades of a screw auger. The purpose of the present invention is to provide what can be soiled, and its gist is to mount an endless chain that moves in parallel with the drive shaft of the screw auger on the earth removing machine, and to the side of the endless chain. A plurality of vertical earth-discharging plates whose edges extend in the drive axis direction are mounted at blade pitch intervals of the screw auger, and through the earth-discharging plates arranged between the blades by vertical movement of the screw auger. ,
In the earth auger machine earth discharging device, the endless chain is configured to be driven in the same direction.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the embodiments shown in FIGS. 1 is a front view of the earth auger machine according to the present invention with a part of the earth removing machine cut away, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. It is a top view which shows the attachment state of an apparatus.

In the figure, reference numeral 4 denotes a screw auger, and as described above, the screw auger 4 is installed parallel to and movable up and down with the reader 3 of the earth auger machine 1, and with the motor 7 installed at the upper end of the reader 3. It has a structure that rotates forward and backward.

Reference numeral 8 denotes an earth removing machine installed near the screw auger 4. The earth removing machine 8 has a pair of frames 9, a roller chain 10, a roller sprocket 11, and a plurality of earth removing plates 12. The frame 9 has a rectangular shape and both ends in the longitudinal direction are formed in a semi-circular shape, and circumferential grooves 13 are continuously formed along the outer circumference on opposing surfaces of both frames 9. .

Numeral 10 is a roller chain, and if a pair of link plates 14 and link plates 15 with attachments are arranged every other one, each link plate 1
4 and 15 are connected endlessly with pins 17 at both ends thereof via rollers 16 and the roller chain 10 has link plates 14, 1 of the pins 17, respectively.
When both end portions 17a projecting outward from 5 are fitted into the circumferential grooves 13 respectively formed on the facing surfaces of the pair of frames 9 and 9 and installed between the frames 9 and 9, both frames are very It is mounted between roller sprockets 11, 11 which are rotatably arranged at both upper and lower ends of 9, 9 via bearings 18.

Reference numeral 12 denotes a flat earth-discharging plate, which is attached to the roller chain 10 via an attachment 15a attached to the link plate 15, and a side edge 12a thereof is parallel to the drive shaft 5 of the screw auger 4. Is mounted vertically so that As shown in FIG. 1, the soil discharging plate 12 has a height H slightly smaller than the blade pitch so that it can be inserted between the blades 6 of the screw auger 4. Are attached to the roller chain 10 at the same intervals.

Reference numeral 19 denotes a mounting base fixed to the reader 3 of the earth auger machine 1. As shown in FIG. 3, the earth removing machine 8 is pivotally mounted 20 on the mounting base 19 so as to be rotatable.
When the soil excavator 8 approaches the screw auger 4 by being swung by an actuator 21 such as a hydraulic cylinder, the side edge 12a of the soil scavenging plate 12 is moved to the screw auger 4
Is parallel to the axis of the drive shaft 5 and its upper and lower edges 1
The blades 2b of the screw auger 4 come close to the upper and lower surfaces of the blade 6, respectively. Then, when the earth removing machine 8 pivots around the pivot 20 and separates from the screw auger 4, the earth removing plate 12 is configured to be completely separated from between the blades 6 and 6 of the screw auger 4.

Therefore, at the time of excavation work by the screw auger 4, the earth excavator 8 has its earth removal plate 12 moved and stopped at a position where it does not interfere with the excavation operation of the screw auger 4, and when the excavation work is completed, Earthing machine 8 is pivoted 20
The soil discharging plate 12 is arranged between the blades 6 and 6 of the screw auger 4 by swiveling around. Although the earth unloading machine 8 is attached to the mounting base 19 to which the reader 3 of the earth auger machine 1 is fixed, the earth unloading machine 8 is installed in another moving mechanism such as a bucket truck and appropriately moved as necessary. Of course, it is possible to use.

Since the screw auger 4 normally rotates in the opposite direction to that during excavation and ascends, the mud adhered between the blades 6 and 6 collides with the side surface 12c of the soil discharge plate 12. Then they are scraped off. At this time, a force in a direction orthogonal to the side surface 12c acts on the soil discharging plate 12, but the roller chain 10 mounted with the soil discharging plate 12 has a pin 17 connecting the link plates 14 and 15 with each other. Since the projecting both ends 17a are fitted in the circumferential grooves 13 of the frames 9 and 9, respectively, the force is supported and canceled by the frames 9 and 9, and the alignment of the soil discharging plate 12 is prevented from being disturbed. To do.

At the same time, since the screw auger 4 rises, the lower end 12b of the soil discharging plate 12 collides with the upper surface of the blade 6 of the screw auger 4 and receives an upward force, so that the roller chain 10 moves in the same direction. Then, the roller sprocket 11 will rotate rightward. At this time, since the roller sprocket 11 is rotatably mounted on the frames 9, 9 via the bearing 18, the resistance of the roller chain 10 during the movement is extremely small. Therefore,
Each earth-discharging plate 12 automatically moves upward as the screw auger 4 moves upward, and the earth-discharging plate 12 under the screw auger 4 sequentially enters between the blades 6 and 6 of the screw auger 4.
The mud between the blades 6 and 6 will be scraped off continuously.

[0014]

As described above, the earth auger machine soil discharging apparatus according to the present invention is equipped with an endless chain which moves in parallel with the drive shaft of the screw auger on the earth discharging machine. A plurality of vertical earth-discharging plates whose edges extend in the drive axis direction are mounted at blade pitch intervals of the screw auger, and through the earth-discharging plates arranged between the blades by vertical movement of the screw auger. Since the endless chain is driven in the same direction, the mud adhering to the blades can be scraped off automatically and reliably regardless of whether the screw auger rotates normally or reversely. Also,
Since the soil dump plate automatically circulates in synchronization with the rise and fall of the screw auger, its power source is unnecessary and cost can be reduced, while both ends of the pin connecting the endless chain link plates are connected. When the mud is scraped off, the projecting ends are fitted in the circumferential grooves formed on the facing surfaces of the pair of frames and are arranged between the frames. There are various effects that can prevent the disorder of the alignment of the soil discharge plate.

[Brief description of drawings]

FIG. 1 is a front view in which a part of an earth discharging device according to the present invention is cut away.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a plan view showing how the earth discharging device is attached to the earth auger machine.

FIG. 4 is a side view of a general-purpose earth auger machine.

[Explanation of symbols]

 1 Earth Auger Machine 3 Leader 4 Screw Auger 5 Drive Shaft 6 Blades 8 Earth Discharge Machine 9 Frame 10 Roller Chain 11 Roller Sprocket 12 Earth Discharge Plate 12a Side Edge 12b Top and Bottom Edge 12c Side 13 Circumferential Groove 14 Link Plate 15 With Attachment Link plate 15a Attachment 16 Roller 17 Pin 17a Both ends 18 Bearing 19 Mounting base 20 Pivot 21 Actuator

Claims (2)

[Claims] 1. An earth-moving machine is equipped with an endless chain that moves in parallel with a drive shaft of a screw auger, and the endless chain is provided with a vertical earth-discharging plate whose side edge extends in the drive-axis direction. A plurality of screw auger blades are mounted at pitch intervals, and the endless chain is configured to be driven in the same direction by the vertical movement of the screw auger through the earth-discharging plate disposed between the blades. Earth auger machine soil removal device. 2. When both ends of a pin connecting the link plates of the endless chain are made to project outwardly, the projecting both ends are respectively fitted in the circumferential grooves formed on the facing surfaces of the pair of frames. 2. The earth auger machine soil discharging device according to claim 1, wherein the earth auger machine is disposed between the frames.