JPH05179649A - Auger machine - Google Patents

Abstract

PURPOSE:To provide an excavated hole with high degree of designing freedom by reciprocating vertically a shaping device installed at the middle position of an adjacent auger rod to a side surface which faces in an orthogonal direction to the direction where plural auger rods are arranged in parallel. CONSTITUTION:Three auger rods 3 are arranged in parallel and connected so that they may be kept in a positioning condition each other to install a drive device at the upper part of a group of auger rods 3. There is also provided, near connecting bearings 5 which connect a part near the lower end of a group of auger rods 3, a shaping device 6 to grind an inward protruding part at the middle position of the adjacent auger rod 3 out of a wavy side surface which faces in an orthogonal direction to a direction where the auger rods 3 are arranged in parallel. Moreover, there is also provided a drive means to reciprocate the shaping device 6 in a vertical direction. It is thus possible for the shaping device to shape the side surface into a flat surface by grinding the protruding part at the side surface of an excavated hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auger machine used for producing a pile pile column wall, etc., in which a plurality of auger rods are arranged in parallel.

[0002]

2. Description of the Related Art In a conventional auger machine, as shown in FIG. 9, the side surface of an excavation hole A formed by an auger rod group is wavy. Therefore, as shown in FIG. 9, when a soil pile column row wall in which a core material B such as H-shaped steel is inserted in the drill hole A is created, the core material B inserted in the drill hole A has an auger width in the wall width direction. Limited by the distance between rods (the distance between holes),
In other words, the number of core materials used is regulated, and in order to secure the necessary strength, it is necessary to use core materials with a large dimension in the wall thickness direction. Was less flexible

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide an auger machine capable of excavating a drill hole having a flat side surface and a high degree of freedom in designing a core material size and a wall thickness.

[0004]

A feature of the auger machine according to the present invention is that the auger rod group is located at an intermediate position between adjacent auger rods among side surfaces facing each other in a direction orthogonal to the auger rod juxtaposing direction of the drill hole. A point is that a shaping tool for shaping the inwardly projecting portion into a flat surface is provided, and a driving means for repeatedly moving the shaping tool in the vertical direction is provided. Further, it is preferable that the driving means is a means for moving the orthopedic tool by using the rotation of the auger rod as a driving force.

[0005]

Since the projecting portion of the side surface of the excavation hole is shaved by the shaping tool, the side surface can be shaped into a flat surface. Moreover, since the orthopedic tool is driven and repeatedly moved in the vertical direction, the protruding portion can be surely scraped.

[0006]

According to the present invention, therefore, it is possible to obtain an excavation hole having a flat side surface and a high degree of freedom in designing the core material size, wall thickness and the like when making a pile pile column wall. It became so.

[0007]

EXAMPLE As shown in FIG. 6, a multi-axis soil auger is constructed by attaching a multi-axis auger machine 2 to a yagler 1 installed on the ground so that it can be raised and lowered. The auger machine 2 is
As shown in FIGS. 1 to 3, three auger rods 3 are connected to each other side by side in a positioning state, and a driving device 4 for rotating the auger rods 3 on the upper part of the auger rod 3 group.
Is provided. In addition, as shown in detail in FIGS. 2 and 3, the auger machine 2 includes a group of auger rods 3 as shown in FIG. 4A near a connecting bearing 5 that connects the lower end of the group of auger rods 3 to each other. The orthodontic tool 6 for cutting inwardly protruding part a at the intermediate position between the adjacent auger rods 3 on the wavy side surfaces facing each other in the direction orthogonal to the auger rod juxtaposition direction of the excavation hole A is provided. A drive means for repeatedly moving the shaping tool 6 in the vertical direction is provided. The shaping tool 6 is attached to the central one of the auger rods 3 so as to be rotatable about its axis X and movable in the direction of the axis X, and to engage with the auger rods 3 on both sides. And is fixed to a cylindrical base 7 that is prevented from rotating around the axis X. The driving means is provided with a coil spring 8 for giving an upward moving force to the table 7 in a lower part of the table 7 of the central auger rod 3, and a cam member 9 fixed to the upper part of the coil spring 8. 9a lower surface 9a
The upper surface 7a of the base 7 and the base 7 as the cam member 9 rotates.
Is periodically pressed downward to form a cam surface that moves against the elastic force of the coil spring 8. Reference numeral 10 denotes a receiver of the coil spring 8 whose position is regulated in the axial direction by a stopper 11 fixed to the central auger rod 3. Therefore, according to the auger machine 2, as shown in FIG. 4B, the excavation hole A having a flat side surface b can be formed, and as shown in FIG.
Can be constructed at a pitch different from the pitch of the auger rods 3 to construct the pile pile column wall W. S is a spacer for positioning the core material B, which is attached to the core material B.

[Other Embodiment] In the above embodiment, as shown in FIG. 7, as the shaping tool 6 which is repeatedly moved in the vertical direction, the outside of the excavation hole portion where the auger rods 3 located at both ends in the juxtaposed direction excavate. It is carried out by adding the one that cuts. That is, in the above embodiment, as shown in FIG. 5, the inwardly projecting portion c remains at the connecting portion of the adjacent ones of the plurality of excavation holes A, but if the above is done, as shown in FIG. To
This part c can be shaved, and the side surface of the entire drill hole group A can be shaped into a flat surface. In this another embodiment, as shown by a chain double-dashed line in FIG. 7, a scraping portion 6 that projects inward from a shaping tool 6 that scrapes a projecting portion c of a connecting portion of an adjacent one.
You may carry out improvement by connecting a together. In the above embodiment, the auger machine 2 having three auger rods 3 is applied, but the present invention can also be applied to the auger machine 2 having four or more auger rods 3. In the above embodiment, as the driving means, the orthodontic tool 6 is moved by using the rotation of the auger rod 3 as the driving force for the downward movement and the elastic force of the spring 8 as the force for the upward movement. as,
The auger rod 3 may be rotated to move in both up and down directions, or the orthodontic device 6 may be repeatedly moved using an actuator such as a motor.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a front view of a notched portion of a main portion showing a state where a shaping plate is raised.

FIG. 2 is a front view of a notch of a main part showing a state where a shaping plate is lowered.

FIG. 3 is a cutaway plan view.

[Fig. 4] Plan view of the drill hole

FIG. 5 is a cross-sectional plan view of a column wall

[Figure 6] Overall side view

FIG. 7 is a cross-sectional plan view showing another embodiment.

FIG. 8 is a cross-sectional plan view of a column wall showing another embodiment.

FIG. 9 is a cross-sectional plan view of a column wall showing a conventional example.

[Explanation of symbols]

 3 Auger rod A Drilled hole a Projecting part 6 Orthopedic tool

Claims (2)

[Claims] 1. An auger machine in which a plurality of auger rods (3) are arranged side by side in a direction orthogonal to an auger rod juxtaposition direction of excavation holes (A) formed by the group of auger rods (3). A shaping tool (6) for cutting an inwardly projecting portion (a) at an intermediate position between adjacent auger rods (3) on opposite side surfaces is provided, and the shaping tool (6) is repeatedly moved in the vertical direction. An auger machine equipped with driving means. 2. The auger machine according to claim 1, wherein the driving means is a means for moving the shaping tool (6) by using the rotation of the auger rod (3) as a driving force.