JPS6227592Y2 - - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a hole drilling device.

The applicant of the present invention has developed a drilling device that combines a manually driven auger and a mechanically driven auger.

That is, it is a device that manually rotates the leading auger and mechanically drives the outer cylindrical auger fitted around the outer periphery of the leading auger.

When used vertically, horizontally, or diagonally, it has a wide range of practical uses, such as as a probe for buried objects using the leading auger, or as a cross-boring machine under roads that utilizes the good directionality of the leading auger.

The reason why buried objects such as gas pipes and water pipes can be confirmed and has good directionality is because the leading auger is carefully rotated and propelled manually without using mechanical power. However, on the other hand, it has the following disadvantages: There are also points.

By the time the exploration and drilling work is completed and the auger is pulled out, the role of the leading auger has ended, but the structure of manually rotating the auger does not improve recovery efficiency.

The present invention improves these points, and provides a drilling device that can be used by freely switching between using the leading auger manually when it is necessary to dig carefully, and using mechanical force when it is not necessary. The purpose is to

Next, an example will be described.

<A> Leading auger The leading auger 1 is a steel rod 12 having a tip blade 11 only at the tip and no blades in other parts, and can be extended sequentially via a joint 15.

The steel rod 12 of the leading auger 1 is provided with non-circular portions 13 which are chamfered at appropriate intervals and have a non-circular cross-sectional shape such as a hoop shape.

A manual handle 14 can be engaged with this non-circular portion 13.

<B> Mechanically driven auger The mechanically driven auger 2 has an outer cylinder 2 that has a larger diameter than the outer diameter of the steel rod 12 of the preceding auger 1 and a smaller diameter than the tip blade 11.
A blade 22 is fixed to the outer periphery in a spiral shape.

The base end of this mechanically driven auger 2 is fixed to a rotating cylinder 31 within a drive machine 3 with a pin 23 or the like.

The driving machine 3 has a built-in motor that rotates by hydraulic pressure supplied from a hydraulic unit 32, and an embodiment is shown in which the rotation of a rotating shaft 33 of the hydraulic motor is transmitted to a rotating cylinder 31 via a gear group, but other embodiments are shown. It is of course possible to drive by a known method.

A handle 36 is provided protruding from the drive machine 3, and the handle 36 is gripped to obtain a reaction force when the mechanically driven auger 2 rotates.

<C> Rotating cylinder The end of the rotating cylinder 31 opposite to the side where the auger 2 is attached is exposed from the drive machine 3, but that part is formed as a notched cylinder 34 instead of remaining cylindrical.

The cutout cylinder 34 has a notch 35 formed by cutting the side surface of the cylinder until the space inside the cylinder is exposed, and the depth and width of the notch 35 correspond to the shape of the non-circular part 13 of the manual auger 1. The configuration is approximately equal to .

<D> Connecting Part The connecting part 4 consists of a piece 41 and a cap 42.

The frame 41 consists of a notched cylindrical body obtained by cutting a cylindrical column along a plane parallel to the central plane passing through the central axis, and a spring 43. An arc-shaped spring 43 is inserted between the two notched cylindrical bodies.
It is connected by.

The size of the piece 41 is such that it can be fitted into the non-circular portion 13 recessed in the steel rod 12 of the leading auger 1 and the notch portion 35 of the notch tube 34 at the same time.

The cap 42 is a cylindrical body with an opening having an inner diameter larger than the outer diameter of the notched cylinder 34 at one end and an opening having an inner diameter larger than the outer diameter of the steel rod 12 of the preceding auger 1 at the other end.

Next, how to use it will be explained.

<A> Manual rotation of the leading auger Manual handle 1 is attached to the non-circular part 13 of the leading auger 1.
When the tip blade 11 is engaged and rotated by the force of the arm, the tip blade 11 enters the ground.

<B> Rotation of the mechanically driven auger The auger 2 is placed on the outer periphery of the steel rod 12 portion of the leading auger 1.
The outer cylinder 21 is fitted and connected to the rotary cylinder 31 of the drive machine 3 with a pin 23 or the like, and the outer cylinder 21 is rotated.

The outer cylinder 21 enters while being guided by the leading auger 1.

If the tip blade 11 of the leading auger 1 is always placed in front of the tip of the mechanically driven auger 2 and the excavation is carried out repeatedly over a short distance, it is possible to search for buried objects and drill holes in the correct direction.

<C> Mechanical drive of the leading auger When pulling out the leading auger 1, it is no longer necessary to manually reverse the rotation carefully.

Then, the coupling between the outer cylinder 21 and the rotary cylinder 31 of the auger 2 is released, and the cutout cylinder 34 is moved to a position where it coincides with the non-circular part 13 of the preceding auger 1. (3rd
Figure) Then, the piece 41 is placed in the notch part 35 and the non-circular part 13.
and then cover the cap 42 over it.

If the driving machine 3 is reversely rotated in this state, the rotation of the rotary cylinder 31 is transmitted only to the leading auger 1, making it possible to easily pull out the auger.

<d> Mechanical drive of the leading auger and the outer cylinder auger Without separating the rotating cylinder 31 and the outer cylinder 21,
The outer cylinder 21 is rotated to gradually pull out the outer cylinder auger 2 so that the notched cylinder 34 and the non-circular part 13 of the preceding auger 1 are aligned. (Fig. 5) Then, a piece 41 is placed in the notch part 35 and the non-circular part 13.
If you fit the cap 42 over it and reverse the driving machine 3, the leading auger 1 and the outer cylinder auger 2 will be connected.
can be extracted at the same time.

Although the above description has been made regarding the time of extraction, it goes without saying that it can be similarly used when entering underground.

In the present invention, as described above, not only the outer cylinder auger but also the leading auger can be driven by mechanical force as needed, so the following effects can be expected.

<B> Since the leading auger can be rotated manually when digging should be done carefully, the advantages of manual operation can be fully demonstrated when the purpose is to explore buried objects or ensure directionality.

<B> When careful rotation is not required, such as when pulling out the leading auger, it is possible to easily mechanically drive only the leading auger, or mechanically drive the leading auger and the outer barrel auger.

Therefore, work can be performed with extremely high efficiency compared to when everything is done manually.

[Brief explanation of the drawing]

Figure 1: General view of one embodiment of the drilling device according to the present invention, Figures 2 and 3: Explanatory diagram of the drive unit during drilling, Figure 4: Cross-sectional view of the drive unit, Figures 5 and 6. : Explanatory diagram of notched tube, 1: Leading auger, 2: Mechanically driven auger, 3: Drive machine, 31: Rotating tube, 34: Notched tube, 4: Connecting parts.

Claims (1)

[Scope of Claim for Utility Model Registration] A leading auger with a tip blade attached to the tip of a steel bar and a non-circular part recessed in a part of the steel bar, and a blade on the outer periphery of an outer cylinder fitted to the steel bar of the leading auger. an outer cylinder auger equipped with an auger, a rotating cylinder that can be connected and separated from the base end of the outer cylinder and rotated by a drive source, a notched cylinder formed by cutting out a part of the rotating cylinder, and a cutout part of the notched cylinder and a leading auger steel rod. A drilling device consisting of a piece that can fit into a non-circular part at the same time.