JPH11152980A - Hole drilling machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hole drilling machine capable of easily performing inversion of an upper leader and setting of a drill head for a lower leader in a short time between a hole drilling work state and a carrying state and realizing large advance force of the drill head during use. SOLUTION: The hole drilling machine is provided with a leader 10 invertibly connecting an upper leader 11 to a lower leader 12, a drill head 27 provided on the leader 10, an advance driving part 26 moving the drill head 27 along the leader 10, and a body 1 supporting the leader 10. The drill head 27 and the advance driving part 26 can be connected and separated with a connection bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling machine for excavating ground.

[0002]

2. Description of the Related Art In a drilling machine, a drill head and a moving device for moving the drill head along the leader are attached to a leader divided into two parts in a longitudinal direction, and the leader is supported by a vehicle body. It has a configuration. Then, in the drilling operation state, the upper and lower readers are connected and rise up in the drilling operation state, while in the transport state, the upper leader falls down with respect to the lower reader and the upper reader is supported by the vehicle body in a horizontal state. Has become.

Here, as a moving device, a chain type and a wire rope type are generally provided as a system for moving a drill head. In the chain method, both the moving device and the drill head are wound and connected by a chain, and the drill head is moved by driving the chain. In addition, the wire rope system has a configuration in which a drill head is connected to a moving device via a wire rope, so that the drill head is suspended by the wire rope, and is moved by pulling out and rewinding the wire rope. Is performed.

[0004]

By the way, as described above, in this type of drilling machine, it is necessary to lie down on the upper leader in the transport state, but in the case of both the chain and the wire rope, for example, There were inconveniences as described below. That is, in the chain method, when the upper leader is turned over, work such as removal of the chain or loosening of the tension must be performed, and much labor and time have to be spent on this.

On the other hand, the wire rope method does not require the labor and time required by the chain method since the wire rope on the drill head side can be simply removed, but in this case, the force of the drill head during feeding is sufficient. Another inconvenience, such as the inability to obtain an image, occurs. In the case of the winding connection, there is the same disadvantage as the chain method. Therefore, there is no drilling machine that can solve these problems at the same time.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a method for inverting an upper leader and installing a drill head on a lower leader between a drilling operation state and a transport state. An object of the present invention is to provide a drilling machine which can be easily performed in a short time and can realize a large feed force of a drill head during use.

[0007]

According to a first aspect of the present invention, there is provided a drill having a lower leader connected to an upper leader so as to be able to be inverted, and a drill provided on the leader. In a drilling machine including a head, a moving means for moving the drill head along the leader, and a vehicle body supporting the leader, the drill head and the moving means are connected to each other via a locking means. It is characterized in that it can be connected and separated freely.

According to a second aspect of the present invention, in the first aspect of the present invention, the locking means includes a connecting bar interposed between the drill head and the moving means, and a connecting bar provided between the drill head and the moving means. A detachable pin attached to each of the drill head and the moving means.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 6 are diagrams showing an embodiment of a drilling machine according to the present invention. In these figures, reference numeral 1 denotes a vehicle body, which has a corolla type traveling body 1a in this embodiment, and a boring machine 2 disposed in front of the vehicle body at a substantially central portion in the width direction of the vehicle body 1. I have. The boring machine 2 is attached to the vehicle body 1 via a bracket 3 and a raise cylinder 4, and the raise cylinder 4 is connected to a slide cylinder indicated by reference numeral 5. When the bracket 3 is pivotally supported by the tilting shaft 6, the bracket 3 can be turned in the front-rear direction of the vehicle body 1 around the tilting shaft 6.

Here, the configuration of the boring machine 2 will be described. The reader 10 includes an upper reader 11 and a lower reader 1
2 are connected in the longitudinal direction, and the shaft 13 penetrates in a state where the protruding pieces 11a and 12a fixed in the vicinity of the joint portion overlap each other. It is designed to be displaced.

As shown in FIGS. 4 and 5, the upper leader 11 has a sprocket 2 near its upper and lower ends.
1, 22 are rotatably mounted. In particular, the sprocket 21 on the upper end side is rotationally driven by a speed reducer 24 that can be decelerated and rotated by driving an oil motor 23. A chain 25 is wound around both sprockets 21 and 22 endlessly. Have been. Therefore, when the oil motor 23 is driven, this rotation is transmitted to the sprocket 21 via the speed reducer 24, and this sprocket 2
The rotation of 1 causes the chain 25 to move endlessly.

A feed driving section 26 is integrally attached to a part of the chain 25, and moves up and down along the axial direction of the upper leader 11 simultaneously with the endless movement of the chain 25. I have. On the other hand, what is indicated by reference numeral 27 is a drill head provided outside the reader 10, and the drill head 27 has a chuck 28 attached to the lower side.

Further, the feed drive unit 26 and the drill head 2
As shown in FIGS. 6 (a) and 6 (b), joint brackets 26a and 27a are fixed to the joint bracket 7, respectively. A connection bar (connection bar) 29 is detachably attached to the joint brackets 26a and 27a. Have been. More specifically, the joint brackets 26a, 2
7a and both ends of the connection bar 29 are formed with through holes at positions corresponding to each other, and the knocking pins 30 are inserted into the through holes, so that the feed driving unit 26 is connected through the connection bar 29. And drill head 2
7 is connected, and when the knock pin 30 is removed, the connection is released.

As shown in FIGS. 4 and 5, inside the lower leader 12, a center bending cylinder 31 which can move forward and backward is fixed. The center bending cylinder 31 has its cylinder rod 31a end connected to a bracket 32 movably attached to the lower leader 12, and the upper and lower leaders 11, 12 are connected when the cylinder rod 31a is retracted. On the other hand, the upper and lower readers 11 and 12 rotate around the shaft 13 to the side away from each other with the advance. Note that a rod holder indicated by reference numeral 33 in FIGS. 1 and 2 is provided at the outer lower end of the lower reader 12.

Further, as shown in FIGS. 1 and 2, the upper reader 11 is provided with a sub-leader 34, and a hydraulic winch 35 is fixed to the outside. On the other hand, a drill rod 36 is gripped by the drill head 27. The wire rope (not shown) mounted on the hydraulic winch 35 is attached to the water swivel 27a at the upper end of the drill rod 27 via a pulley 34a provided at the upper end of the sub-leader 34. By rewinding, the drill rod 36 moves up and down.

Next, the operation of the drill having the above configuration will be described. First, at the time of drilling work, the raise cylinder 4 is advanced, the middle bending cylinder 31 is retracted, and the upper and lower readers 11 and 12 are connected.
These are started up with the sub-reader 33 attached to the upper reader 11 (see FIGS. 1 and 2). At this time, the feed drive unit 26 and the drill head 27 are connected by a connection bar 29, and therefore, the endless movement of the chain 25 accompanying the rotation of the sprocket 21 causes the feed drive unit 26 to be lowered simultaneously with the drill. The head 27 descends.

The lower end of the drill head 27 is regulated in the vicinity of the rod holder 33 of the lower leader 12, and at this time, the rod holder 33 once holds the drill rod 36. Next, after raising the feeding drive unit 26 and the drill head 27 again, the gripping by the rod holder 33 is released, and this operation is repeated once or twice, so that the drill head 27 is moved to the upper end of the upper reader 11 at the time of actual work. The upper side holds the upper end of the drill rod 36, and the drill rod 36 is rotated in this state.

When the work of excavating the ground by the rotation of the drill rod 36 is completed, the drill rod 36 is raised by the feed drive unit 26 and the drill head 27 and is removed from the drill hole. Further, the grip of the drill rod 36 by the drill head 27 is released, and the drill rod 36 is removed by the hydraulic winch 35.

On the other hand, from this state, in order to bring the leader 10 into the carrying posture, first, the drill head 27 is moved to the lower leader 12.
, And in this state, the knock pin 30 is removed, the connection bar 29 is removed, and the feed drive unit 26 and the drill head 27 are separated. Then lock pin 4
0 is removed, the raise cylinder 4 is retracted, and the center bending cylinder 31 is advanced, so that the upper reader 11 is displaced to a vertical position with respect to the lower reader 12 in the upright state.
Is mounted and supported on the vehicle body 1 in a horizontal state.

Thus, according to the drilling machine of the present invention,
Between the drilling operation state and the transport state, the inversion of the upper leader 11 and the installation of the drill head on the lower leader 12 can be easily performed in a short time by connecting and disconnecting the connection bar 29. The connection / separation work of the connection bar 29 can be performed by a simple work of simply inserting or not inserting the knock pin 30 and the lock pin 40. Further, a large feed-down force of the drill head 27 can be realized during drilling.

[0021]

As is apparent from the above description, the following effects can be obtained by the drilling machine of the present invention.
According to the first aspect of the invention, the upper leader can be inverted and the drill head can be installed on the lower leader in a short time and easily between the drilling operation state and the transport state. Large drilling forces of the drill head can also be achieved during drilling.

According to the second aspect of the present invention, the connecting / separating operation of the connecting bar can be performed by a simple operation by engaging and disengaging the pins.

[Brief description of the drawings]

FIG. 1 is a front view showing a drilling machine described in the present embodiment.

FIG. 2 is a side view showing the drilling machine described in the present embodiment.

FIG. 3 is a top view showing the drilling machine described in the present embodiment.

FIG. 4 is a partial front sectional view showing details of a reader of the drilling machine described in the present embodiment.

FIG. 5 is a partial side sectional view showing details of a leader of the drilling machine described in the present embodiment.

FIGS. 6A and 6B are diagrams showing details of a connection portion between the feed driving unit and the drill head, where FIG. 6A is a front partial sectional view and FIG. 6B is a side partial sectional view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 10 Leader 11 Upper leader 12 Lower leader 21 and 22 Sprocket (moving means) 23 Oil motor (moving means) 24 Reduction gear (moving means) 25 Chain (moving means) 26 Feeding drive part (moving means) 27 Drill head 29 Connection bar (connection bar) 30 Dowel pin 40 Lock pin

Claims (2)

[Claims] 1. A reader having an upper reader connected to a lower reader so as to be capable of being inverted, a drill head provided on the reader, moving means for moving the drill head along the reader, and supporting the reader. A drilling machine comprising: a drilling machine, comprising: a drilling machine; and a drilling machine, wherein the drill head and the moving unit are configured to be freely connected / separable via a locking unit. 2. The locking means includes a connecting bar interposed between the drill head and the moving means, and a detachable pin for attaching the connecting bar to each of the drill head and the moving means. The drilling machine according to claim 1, comprising: