JPH04203091A - Earth auger device - Google Patents

Abstract

PURPOSE:To facilitate work and to prevent the riskiness of demolition work by providing an arm holding a cylindrical body placed around a rotary wind of an earth auger to the lower part of the front of a machine body so that the holding arm is capable of opending and shutting in a horizontal direction. CONSTITUTION:A holding arm 5 is in a state of releasing, a protection cylindrical body 4 is taken to the inside thereof the place, and the protection cylindrical body 4 is held by a leader 2. After that, the holding arm 5 is shutted with a hydraulic jack 6, the cylindrical body 4 is surely held from the perimeter, excavation is made by an auger 1 and, at the same time, the protection cylindrical body 4 is driven into the ground. When the auger 1 is pulled out, it is made by dividing it into a plurality of parts, a bearing member is horizontally penetrated into a bearing ring 7 formed to the holding arm 5 in order to prevent the auger 1 from falling, and the auger 1 is borne on the way to carry out work. According to the constitution, the protection cylindrical body 4 can be easily and surely held to facilitate work.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to an earth auger.

Description of the present invention> Hereinafter, the present invention will be described in detail with reference to the drawings.

<B> Basic structure The earth auger device is a device in which an auger 1 having rotary blades is inserted into the ground to drill a hole, and a pile is inserted into the hole to drive the pile.

For this purpose, the auger 1 has a structure in which a leader 2 is provided, a motor 3 is installed along the leader 2 so as to be movable up and down, and the motor 3 rotates the auger 1.

In order to prevent the wall of the drilled hole from collapsing due to the rotation of the auger 1, a protective cylinder 4 is placed around the hole.

<Mouth> Grasping arm A grasping arm 5 that can be opened and closed is provided at the bottom of the reader 2.

This gripping arm is supported by a nearly vertical pin and can therefore be opened and closed horizontally.

This gripping arm 5 consists of two arms, and the diameter when both arms are closed is configured to be the same as the outer diameter of the protective cylinder 4 located around the auger 1.

A hydraulic jack 6 is used to open and close the grip arm 5, and the grip arm 5 is opened and closed by expanding and contracting the jack 6.

An annular body is provided as a support ring 7 protruding from the upper or lower surface of the gripping arm 5.

<Operation of the present invention> At the same time as the auger 1 excavates, the protective cylinder 4 is also inserted into the ground.

For this purpose, it is necessary to take in and hold the protective cylinder 4 with the reader 2.

Therefore, before taking in the cylindrical body 4, the gripping arm 5 is kept in a released state, and the cylindrical body 4 is taken in and positioned inside thereof.

After taking in the cylinder 4, the gripping arm 5 is closed, and the work is continued while the cylinder 4 is securely held from its surroundings.

The opening and closing operations of the gripping arm 5 as described above are performed by extending and contracting the hydraulic jack 6, and therefore are extremely simple.

Furthermore, when pulling up the auger, it is divided into multiple parts. In this case, to prevent the auger from falling,
We need to support you along the way.

For this purpose, the support ring 7 formed on the gripping arm 5 is passed through the support member horizontally, and the auger 1 is supported along the way to perform the work.

<Effects of the Present Invention> Since the present invention is as described above, it is possible to easily and reliably hold the protective cylinder 4, which was conventionally inconvenient to handle, thereby facilitating the work.

Furthermore, since a part of the auger can be supported by the gripping arm when dismantling the auger, there is no danger of the divided auger falling into the hole, and the dismantling work can be carried out with peace of mind.

[Brief explanation of the drawing]

Fig. 1 1 General view of the device of the present invention Fig. 2: Plan view of the gripping portion Fig. 3 Side view of the gripping arm Applicant Taisei Corporation -1 Agent *"J'i" LLI D m i "- ,<
,,,' ,-procedural amendment words and deeds) April 1991 and Japan Patent Office Commissioner Satoshi Uematsu 1, Indication of the case Patent Application No. 2-333515 2, Name of the invention Earth Ocher Device 3, Make the amendment Relationship with the patent case Patent applicant address 16-14 Shibuya-chome, Shibuya-ku, Tokyo Name
Tokyu Construction Co., Ltd. Representative Tetsu Goto 4, Agent 105 Address 9F Marube Building, 3-1-10 Shinbashi, Minato-ku, Tokyo Telephone 501-0090, ', -T-Name (8)
241) Patent attorney Sosei Yamaguchi 5, date of amendment order
・-m=February 25, 1991 (all shipping dates 1991)
(March 12, 2016) 6. Target drawings of M-author (all drawings) 7. Contents of M-author

Claims (1)

[Claims] (1) A device that is equipped with a motor that rotates the auger of an earth auger, and a leader that supports the auger and the motor so that they can move up and down. , is installed at the bottom of the front of the aircraft, and the gripping arm is configured to be able to open and close horizontally.
earth auger device