JPS6140988A - Earth auger apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an earth auger device used for excavating a vertical hole in the ground.

PRIOR ART Conventional earth auger devices support the leader mast with a boom, stand on the ground, and excavate a hole in the ground by lowering a motorized auger along the guide rod of the leader mast.
This conventional example is heavy and long and requires a damast, making it difficult and dangerous to handle the leader mast when entering and exiting a narrow site, and even if it is disassembled and handled, disassembling the leader mast requires a lot of work.

Purpose The present invention aims to provide an earth auger device that is easy to enter and exit from a work site and is easy to handle on site because there is no leader mast.

Structure: In the present invention, an auger drive ring having a regular polygonal hole in the center is pivotally connected to a bearing frame of an auger drive unit body, the drive ring is rotated by a motor, and a hose is connected to the upper end of an external upper connection column. This is an earth auger device which is connected to a rotary joint and whose upper end is suspended by a telescoping boom of a crane device.

Embodiment FIGS. 1 and 2 show one embodiment. Reference numeral 1 denotes a gear provided on an auger drive part having a regular polygonal hole 1, for example, a square hole 2 in the center, and a gear that drives a hydraulic motor 6 installed on a main body 3. It meshes with the driving gear 7. Reference numeral 8 denotes an idle ring having a regular polygonal hole 2a similar to the regular polygonal hole 2 in the center, and another bearing frame mounted on the main body 3 below and coaxially with the drive ring l. It is pivoted to 9. A small boom 10 extends from the clay truck main body 11 and supports the auger drive unit main body 3. Together with the lower hydraulic support member 12, it supports the auger drive unit A on the ground and supports the shafts of the drive ring 1 and the free rotation ring 8. Keep your mind vertical. Reference numeral 13 denotes a hollow connecting column which is similar to the regular polygonal hole 2 on its side and has a plug 14 at one end and a socket 15 at the other end.
has. This connecting column 13 is connected to another connecting column 13 by inserting a plug 14 into a socket 15 facing the other connecting column 13 and preventing the connecting column from being removed by a stopper 16. The connecting column 13 is connected to the shaft of the auger B by the required length, and the excavating claw 17 is connected to the shaft of the auger B.
is fixed to form one auger B, and the top connecting column'
A rotary joint 19 for connecting the liquid hose 18 is connected to the upper end of 13a, and is suspended by a boom 21 of a crane device via a rope 20 tied to the upper part of the joint. While suspending the auger B formed by appropriately connecting the connecting columns 13 as described above with the telescopic boom 21, the drive ring 1 is rotated by the motor 6, and the boom 2 is suspended.
1 to gradually lower the auger B, the auger B is rotated by the drive ring 1 and opens into the regular polygonal hole 2,
2a and descend, and excavate a hole in the ground with the excavating claws 17. In this case, if necessary, water or the like is fed into the auger B from a pump (not shown) via the hose 18,
Let the bottom end of the auger flow out and continue drilling. When mixing with a cement mill in a ground hole, move the auger B up and down using the boom 21. At this time, if the auger B is too short for the planned excavation hole, the drive ring 1 At the upper throat, the connecting column 13 is disconnected, and another connecting column is inserted and connected to increase the length of the auger and excavate.

Effects In the present invention, the shaft of the auger is made of a combination of regular polygonal connecting columns, which is suspended by a boom of a crane device and driven by being fitted into a drive ring having a regular polygonal hole. There is no need for a mast9, and the auger can be easily transported to and from the work site by disassembling it, and it is also easy to assemble the auger on site, making it possible to freely obtain augers of different lengths. Since the auger can be made as long as necessary, it is also possible to excavate deep underground holes.

[Brief explanation of the drawing]

FIG. 1 is a side view of one embodiment of the present invention, and FIG. 2 is a partially cutaway exploded side view of the main parts of the same. In the figure, 1... Drive ring, 2, 2a... Regular polygonal hole, 4
...Bearing frame, 5...Gear, 6...Motor, 7...
- Drive gear, 8... Idle ring, 13... Connecting column.

Claims (1)

[Claims] An auger drive ring having a regular polygonal hole in the center is pivotally connected to a bearing frame provided on the auger drive body, and the drive ring is rotatable by a motor, and the outer surface is similar to the regular polygonal hole and is hollow. An auger made by connecting multiple connecting columns to form one column is slidably inserted into the same regular polygonal hole, and a rotary joint for connecting a liquid hose is provided in the upper end hole of the uppermost connecting column. An earth auger device in which the upper end of the upper connecting column is suspended by a telescoping boom of a crane device.