JP2504744Y2 - Drilling rig - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavating device for excavating underground by boring a rod while connecting a boring rod to the ground or slope in civil engineering construction work such as underground boring or an underground anchor.

[0002]

2. Description of the Related Art A conventional excavating device for deeply excavating underground by splicing a boring rod with the upper end of an inner rod or outer rod driven along a guide and the lower end of the next inner rod or outer rod. It is manually moved by an operator to be lightly connected, and then a wrench / rotational striking device is actuated to screw together for strong connection, followed by driving.

[0003]

[Problems to be Solved by the Invention]
Whether it is a boring rod that connects inner rods to each other or a double pipe boring rod consisting of an inner rod and an outer rod, there is a part where the connecting work of the rod is done manually, and that work involves moving heavy rods. It takes a lot of labor and time, and since it is a work in a place with poor footing, it was a work involving accidents and danger. The problem to be solved by the present invention is to solve these problems in the prior art and to provide a drilling device capable of connecting rods quickly and safely with almost no manpower.

[0004]

SUMMARY OF THE INVENTION The gist of the present invention, which has solved the above problems, is to provide an inner rod and an outer rod having a predetermined length.
Inner rods of bowling rods consisting of
And the outer rods should not be sequentially connected along the guide.
In an excavator that is driven by a rotary hammering device to drill a hole in the ground, an inner rod gripping tool is provided near the tip of the guide so that it can move back and forth substantially at right angles to the axial direction of the inner rod, and the inner peripheral surface of the funnel shape is formed. A tubular inner rod holder that is capable of being split into a plurality of pieces is provided above the inner rod gripper so as to be able to retreat, and further provided with a drive mechanism that divides the inner rod holder, combines, and retreats . Another funnel
A cylindrical outer that has a shaped inner peripheral surface and can be divided into a plurality of pieces
ー Move the rod holder over the inner rod holder.
The outer rod holder is split, united and relocated.
The excavator is provided with a drive mechanism that rotates .

[0005]

[Operation] In this invention , the outer rod is attached to the outer side of the inner rod.
-Use a double-tube boring rod with a rod.
It

Next, after the boring rod is driven into the ground by the rotary striking device, the boring rod of the next double pipe is placed on the guide, and the boring rod is lowered along the guide to make the inner rod of the boring rod. after combined core by a lower b N'naroddo holder,
Connect to the upper end of the inner rod of the driven lower boring rod. After that, disassemble the inner guide and move it outward, lower the outer rod outside the boring rod while aligning it with the outer rod holder,
It is connected to the upper end of the outer rod on the outer side of the lower boring rod and is driven. By repeating this, the bowling rod is driven deep into the ground. Further, the outer rod holder can force the inner rod and the outer rod to be aligned with each other.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment using the double pipe boring rod of the present invention will be described below with reference to the drawings. 1 is a plan view of the embodiment, FIG. 2 is a front view of the same, FIG. 3 is a partially cutaway plan view showing a main part of the embodiment, FIG. 4 is a front view of the main part, and FIG. 8 is a sectional view taken along the line B, FIG. 6 is a sectional view taken along the line CC of FIG. 4, FIG. 7 is a sectional view taken along the line AA of FIG.
[Fig. 3] is an explanatory view showing a thread cutting holder used in the examples.

In the figure, 1 is an outer rod on the existing side, 2 is an inner rod, 3 is a cylinder for moving the inner rod holder 8 forward and backward, 4 is a cylinder for moving the outer rod holder 9 forward and backward, and 5 is a guide placed on a guide. Is an inner rod connected to the guide, 6 is an outer rod placed on a guide and connected next, 7 is a wrench-type inner rod gripping tool for gripping the inner rod, and 8 has a funnel-shaped inner peripheral surface, and is divided into two parts. Cylindrical inner rod holder, 9 has a funnel-shaped inner peripheral surface, and is divided into two cylindrical outer rod holders, 10 is a cylinder, 11 is an inner rod gripping tool 7 for the inner rod 2. Cylinder for moving forward and backward, 12 is a cylinder for driving the thread cutting holder 13, 1
Reference numeral 3 denotes a thread cutting holder that holds a screw threaded portion that unfastens a screw threaded portion that connects the inner rods 5 to each other and the outer rods 6 to each other, and 14 indicates a rotary impact device 17 and the inner rod 5.
And 15 are couplings, 16 is a rotary drive shaft, 17 is a rotary striking device, 18 is a guide, and 19 is a boring rod consisting of an inner rod 5 and an outer rod 6.

In this embodiment, when the boring rods are connected and driven, the inner rod holder 8 is actuated by the cylinder 3 to bring them into a closed state, and the boring rod is composed of the inner rod 5 and the outer rod 6 to be mounted. 20 is carried to the outer rod holder 9 by a crane or the like, and the lower end is held by the outer rod holder 9. When the cores of the outer rods 6 are aligned, the inner rods 5 fall and pass through the inner rod holders 8 to hit the upper ends of the existing inner rods 2 for screwing on the drilling side. Next, the rotary striking device 17 is advanced to move the extension rod 14
Connect with. At this time, the upper end of the outer rod 6 is partially screwed into the rotary impact device.

The inner rods 2 and 5 are securely connected, the inner rod gripper 7 and the inner rod holder 8 are opened, the outer rod holder 9 is partially opened, and the outer rod 6 is rotatably hit as a guide. The device 17 is advanced to screw and connect the outer rods 1 and 6.

Then, the inner rod holder 8 is disassembled and opened. Next, when pulling up the boring rod 20 from the ground to remove the tube, the inner rod holder 8 is replaced with a threading holder 13, and the inner rod 5 is gripped and rotated to perform threading work. The outer rod holder can also be used to thread the outer rod. Furthermore, by exchanging the threading holder, the inner rod and the outer rod can be threaded by the driving device.

[0012]

As described above, according to the present invention, the inner rod holder and the outer rod holder perform the centering and guide of the boring rod, and also function as a holding member, so that the boring rod connecting work can be performed quickly. In addition, it can be performed safely, and manpower can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view of an embodiment of the present invention.

FIG. 2 is a front view of the embodiment.

FIG. 3 is a partially cutaway plan view showing a main part of the embodiment.

FIG. 4 is a front view of a main part of the embodiment.

5 is a cross-sectional view taken along the line BB of FIG.

6 is a cross-sectional view taken along the line CC of FIG.

7 is a cross-sectional view taken along the line AA of FIG.

FIG. 8 is an explanatory diagram showing a thread cutting holder used in an example.

[Explanation of symbols]

 1 Outer rod 2 Inner rod 3 Cylinder 4 Cylinder 5 Inner rod 6 Outer rod 7 Inner rod gripper 8 Inner rod retainer 9 Outer rod retainer 10 Cylinder 11 Cylinder 12 Cylinder 13 Thread holder 14 Extension rod 15 Coupling 16 Rotation drive Shaft 17 Rotating striking device 18 Guide 19 Boring rod

Claims (1)

(57) [Scope of utility model registration request] 1. An inner rod and an outer rod having a predetermined length.
Inner rods of bowling rods consisting of
And the outer rods should not be sequentially connected along the guide.
In an excavating device for drilling the ground etc. by driving with a rotary hammering device , an inner rod gripping tool is provided near the tip of the guide so as to be able to move forward and backward substantially at right angles to the axial direction of the inner rod, and the funnel-shaped inner peripheral surface is provided. A tubular inner rod holder that is capable of being split into a plurality of pieces is provided above the inner rod gripper so as to be able to retreat, and further provided with a drive mechanism that divides the inner rod holder, combines, and retreats . Also has a funnel-shaped inner surface
And a cylindrical outer rod holder that can be divided into multiple pieces
It is installed above the inner rod holder so that
Drive unit for splitting, merging, and retracting rotation of the tar rod holder
An excavation device characterized by having a structure .