JP3379878B2 - Drilling machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a drilling machine for drilling ground and / or kneading with a cement suspension by rotating an auger. 2. Description of the Related Art In recent years, holes have been drilled while rotating an auger while pouring a cement-based suspension into the ground from the tip for soil retaining, back protection walls, water blocking walls or ground improvement. Attention has been paid to a construction method in which a continuous wall can be constructed in the ground at the current position, and it can be applied even in a narrow space in an urban area, and this method is used because of its advantages such as simplification of the work process and shortening of the construction period. Construction work has been heavily used. FIG. 4 is an explanatory view showing the basic configuration of a drilling machine used in such a construction method. In the figure, 9 is a drilling machine main body, 5 is an auger provided in the drilling machine and drills the ground by its rotation, and 6 is an auger that supports the auger 5 and can move it in the longitudinal direction while supporting it. A leader 8 is a guide ruler for positioning the hole by the auger 5 in order to increase the accuracy of the completed wall. According to the method of erecting the leader 6, the auger 5 is suspended from a self-supporting type in which the lower part of the leader 6 is fixed to the drilling machine main body and supports the auger 5, or a crane extending from the drilling machine main body. It is roughly classified into a hanging type. [0004] Further, H is built as a core material in a drilled hole.
As shown in FIG. 5, a cable 3 having a crane hook 3a at a tip thereof and a winch (not shown) for winding and unwinding the cable are provided as a configuration for carrying in and hanging the shaped steel. , The pulling-out pulley 1 above the leader 6.
In some cases, there is no need to separately prepare a crane truck for suspending the shaped steel. [0005] In the above-mentioned drilling machine, the ground is drilled along the guide ruler 8, and the auger 5 and the leader 6 are drilled along the guide ruler 8. It is necessary to move the auger 5 and the leader 6 to the planned area one after another, so that the auger 5 and the leader 6 are very complicated to be handled at a narrow construction site. In particular, in the configuration of the drilling machine provided with the above-described crane configuration, the pulley 1 provided above the leader 6 may come into contact with a nearby structure or the like while the auger 5 and the leader 6 are moving. The auger 5 and the reader 6 must be handled in consideration of the one protrusion, and in some cases, the operation may become impossible, and improvement thereof has been desired. The present invention was conceived in view of the above problems of the prior art, and improved the configuration of a drilling machine equipped with the above-mentioned crane configuration so that the pulley could not move while the auger and leader were moving. The contact between the auger and the leader is facilitated even in a narrow construction site. [0007] Therefore, the present invention provides an auger for kneading ground and / or kneading with a cement-based suspension, a leader for guiding the auger in a longitudinal direction, As shown in FIG. 1, in a drilling machine including a rope having a crane hook at its tip, a winch for winding and unwinding the rope, and a rope pulling pulley provided above or above the leader, , The pulley 1 is a leader 6
It is provided so as to be pivotable from the upper part to the upper part, and its pivot 1a
When but Ru is installed to be saved on the inner side of the auger 5 outermost surface G
In both cases, as shown in FIG.
The elastic body 2 is provided with
During loading, the pivot 1a of the pulley is located inside the outermost surface G of the auger 5.
The basic feature is that it can be evacuated . In the configuration of the above-mentioned drilling machine, as shown in FIG. 1, one of the tangents of the turning locus (shown in agreement with G in the drawing) is defined as the turning direction of the pulley 1 in the longitudinal direction of the leader 6. It is desirable that the pulley 1 be aligned or parallel to it, since the rope can be wound and unwound at any position of the pulley 1 and the structure is not complicated. [0009] [action] In the above configuration, or automatically by operation of the operator
The pulley 1 is temporarily evacuated to a predetermined place (the pulley 1).
The pivot 1a of the tool 1 retracts inside the outermost surface G of the auger 5.
During the movement of the auger 5 and the reader 6
Li 1 will no longer contact neighboring structures, etc.
Of the auger 5 and reader 6 even in a small construction site
When the above crane configuration is not used
The pulley 1 is naturally evacuated to a predetermined place.
New configuration. Further, an electric or hydraulic actuator (not shown) may be provided in the turning direction of the pulley 1 so that the pivot 1a of the pulley can be retracted inside the outermost surface G of the auger 5 by expansion and contraction. . In that case, the actuator is expanded or contracted by the operation of the operator, or a sensor is provided, and a CPU or the like is automatically controlled to operate the actuator, and the evacuation and turning to the outside are performed. Is also good. An embodiment of the drilling machine according to the third aspect of the present invention will be described below. 2 and 3 show an embodiment of the above invention, in which 10 is a drilling vehicle having a boom 10a, 9 is a drilling machine main body suspended from the boom 10a, 5a, 5b, 5c is an auger provided in the drilling machine main body 9 and drills the ground by its rotation. 50a, 50b, 50c are the augers 5a, 5b,
Reference numeral 5c denotes a rotary drive device, 51 denotes a vibration damper for lowering the augers 5a, 5b, and 5c, and 60a and 60b guide the rotary drive devices 50a, 50b, and 50c to vertically move along a reader 6 described later. A guide rail 7 for rotating the leader 6 in the circumferential direction of the reader 6; and an auger 5 for improving the accuracy of passing the completed wall.
a guide ruler for positioning the drilling holes by the augers 5a, 5b, 5c while supporting the rotary driving devices 50a, 50b, 50c;
a, a leader having a hook 3a for a crane at its tip, 4 a winch for winding and unwinding the wire 3, and 1 for unwinding the wire 3 above the leader 6. Pulley to do. In this configuration, the pulley 1 is provided with a reader 6
It is provided at the tip of a boom 10a on which the posture adjusting device 7 is installed. That is, at the tip of the boom 10a, a U-shaped rotating body 10b is rotatably attached,
The pulley 1 is pivotally supported by the rotating body 10b. As a result, the pulley 1 is installed so as to be pivotable above the reader 6. Further, one of the tangents of the turning locus is set so as to be parallel to the longitudinal direction of the reader 6. The wire 3 guided to the pulley 6 is pulled out from the winch 4 via other fixed pulleys 1 'and 1 ". The elastic body 2 is provided in the turning direction of the pulley 1, and its elastic force causes When no load is applied, the pivot 1a of the pulley can be retracted to the inside of the outermost surface G of the auger 5. That is, the elastic body 2 has a cylindrical storage frame 20 having one open end surface, and the inside of the storage frame 20. And a spring 21 sandwiched between a movable wall 23 housed on the open side thereof and a closed end face side of the storage frame 20, one end of which is fixed to the movable wall 23 and the other end is provided from the closed end face side. And a rod 22 that penetrates slidably. The storage frame 20 is pivotally mounted on the tip end side of the boom 10a, and the other end of the rod 22 is
b. Therefore, when the pulley 1 turns through the rotating body 10b, the rod 2
The spring 2 sandwiched between the movable wall 23 and the closed end face of the storage frame 20 with the withdrawal / retraction of the spring 2
The contraction force and the resilience of the pulley 1 act, and when no load is applied, the resilience allows the pivot 1a of the pulley to retreat inside the outermost surface G of the auger 5. In the above configuration, the wire (not shown) wound around the steel material on the hook 3a for carrying in the steel material or the like before drilling by the drilling machine or setting up the H-shaped steel after drilling. And then extend and retract the boom 10a,
Furthermore, the wire 3 is pulled in and out by the winch 4, so that the wire 3 is loaded and built. However, when such loading or loading is not performed, there is no load, and as described above, the pivot 1a of the pulley can be retracted inside the outermost surface G of the auger 5 by the elastic force of the elastic body 2 as described above. ing. Therefore, the pulley 1 does not come into contact with a nearby structure during the movement of the augers 5a, 5b, 5c and the leader 6, so that the auger 5 can be used even in a narrow construction site.
a, 5b, 5c and the leader 6 can be easily handled. According to the above-described configuration of the drilling machine of the present invention, the configuration of the pulley for extending the hanging rope of the crane hook is retracted to a predetermined place by the operation of the operator or automatically. As a result, the pulley does not come into contact with a nearby structure or the like while the auger and the leader are moving, so that the auger and the leader can be easily handled even in a narrow construction site.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing a basic configuration of the present invention. FIG. 2 is an explanatory view showing a configuration of a drilling machine main body suspended from a boom of a drilling machine vehicle. FIG. 3 is an explanatory view showing a retracting configuration of a pulley by an elastic body. FIG. 4 is an explanatory diagram showing a basic configuration of a drilling machine. FIG. 5 is an explanatory diagram showing a configuration of a drilling machine provided with a crane configuration. [Description of Signs] 1 Pulley 1 ', 1 "Fixed pulley 1a Axis 2 Elastic body 3 Cable 4 Winch 5a, 5b, 5c Auger 6 Leader 7 Attitude adjusting device 8 Guide ruler 9 Drilling machine body 10 Drilling vehicle 10a Boom 10b Rotating body 20 Storage frame 21 Spring 22 Rod 23 Moving walls 50a, 50b, 50c Rotation driving device 51 Vibration stoppers 60a, 60b Guide rail

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Claims (1)

(57) [Claims 1] An auger for kneading ground and / or kneading with a cement-based suspension, a leader for guiding the auger in the longitudinal direction, and a crane hook. With a cord
In a drilling machine equipped with a winch for winding and unwinding the rope and the pull-out pulley provided above and above the leader, the pulley is provided rotatably above and above the leader, and The pivot is installed so as to be retractable inside the outermost surface of the auger, and the pulley is rotated.
Equipped with an elastic body in the turning direction, its contraction force or elasticity,
The pulley pivot retracts inside the auger outermost surface when no load is applied
A drilling machine characterized in that it can be used.