JP3921563B2 - Drilling machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a drilling machine for excavating the ground.
[0002]
[Prior art]
The drilling machine has a structure in which a drill head and a moving device for moving the drill head along the leader are attached to a leader that is divided into two in the longitudinal direction, and the leader is supported by the vehicle body. . In the drilling state, the leader rises with the upper and lower leaders connected to each other, while in the transporting state, the upper leader is tilted with respect to the lower leader so that the upper leader is supported by the vehicle body in a horizontal state. It has become.
[0003]
Here, the moving device is roughly divided into a chain type and a wire rope type as a method of moving the drill head. In the chain system, 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 a wire rope, and moves by pulling and unwinding the wire rope. Is done.
[0004]
[Problems to be solved by the invention]
By the way, as described above, this type of drilling machine needs to lie down on the upper leader in a transported state, but there are inconveniences as described below, for example, in both the chain and wire rope types. . That is, in the chain method, when the upper leader is laid down, it is necessary to perform an operation of removing the chain or loosening the tension, which requires much labor and time.
[0005]
On the other hand, the wire rope method simply removes the wire rope on the drill head side, so labor and time are not required as in the chain method. Another inconvenience occurs. Further, in the case of the winding connection, there is the same inconvenience as the chain method. Therefore, the drilling machine that can solve these problems at the same time is not currently provided.
[0006]
The present invention has been made to solve the above-described problems, and its purpose is to allow the upper leader to be inverted and the drill head to be installed on the lower leader in a short time between the drilling operation state and the transporting state. It is an object of the present invention to provide a drilling machine that can be easily performed and that can realize a large feed force of a drill head when used.
[0007]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a drilling machine in which an upper leader is connected to a lower leader so as to be inverted, a drill head provided on the leader, and the drill head moved along the leader. A drilling machine comprising: a moving means for moving the body and a vehicle body that supports the leader; a connecting bar interposed between the drill head and the moving means; a locking means consisting of a disengageably pins to be attached to each of the moving means are provided, characterized in that said drill head said moving means, separate from the coupling via the locking means is configured to be freely And
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 6 are views showing an embodiment of a drilling machine according to the present invention. In these drawings, reference numeral 1 denotes a vehicle body. In this embodiment, the vehicle body 1 has a corolla type traveling body 1a, and a boring machine 2 is disposed in front of the vehicle body 1 at a substantially central portion in the width direction of the vehicle body 1. Yes. 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 denoted by reference numeral 5. The bracket 3 is pivotally supported by the raising / lowering shaft 6 so that the vehicle body 1 can be turned upside down around the raising / lowering shaft 6.
[0010]
Here, the configuration of the boring machine 2 will be described. In the reader 10, an upper reader 11 and a lower reader 12 are connected in the longitudinal direction, and a shaft 13 is inserted in a state in which the projecting pieces 11a and 12a fixed in the vicinity of the coupling portion are overlapped. The center is displaced toward the side away from and the side closer to each other.
[0011]
As shown in FIGS. 4 and 5, sprockets 21 and 22 are rotatably attached to the upper leader 11 in the vicinity of the upper and lower ends thereof. In particular, the sprocket 21 on the upper end side is driven to rotate by a speed reducer 24 that can be rotated at a reduced speed by driving an oil motor 23. A chain 25 is wound around the sprockets 21 and 22 in an endless manner. Has been. Therefore, when the oil motor 23 is driven, this rotation is transmitted to the sprocket 21 via the speed reducer 24, and the chain 25 moves endlessly by the rotation of the sprocket 21.
[0012]
A part of the chain 25 is integrally provided with a feed driving unit 26, and moves up and down along the axial direction of the upper leader 11 simultaneously with the endless movement of the chain 25. 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.
[0013]
Further, as shown in FIGS. 6A and 6B, joint brackets 26a and 27a are respectively fixed to the feed driving unit 26 and the drill head 27, and a connection bar ( A connection bar) 29 is detachably attached. More specifically, each of the joint brackets 26a and 27a and both ends of the connection bar 29 are formed with through holes at positions matching each other, and the knock pin 30 is inserted into the through holes, whereby the connection bar 29 The feed driving unit 26 and the drill head 27 are connected to each other via the pin, and when the knock pin 30 is removed, the connection is released.
[0014]
Further, as shown in FIGS. 4 and 5, a folding cylinder 31 that can be advanced and retracted is disposed and fixed in the lower leader 12. The end of the cylinder rod 31a is connected to a bracket 32 that is freely attached to the lower leader 12, and the upper and lower leaders 11 and 12 are connected when the cylinder rod 31a is retracted. On the other hand, the upper and lower readers 11 and 12 are rotated to the side away from each other with the shaft 13 as the center. A rod holder denoted by reference numeral 33 in FIGS. 1 and 2 is provided at the outer lower end of the lower reader 12.
[0015]
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 held by the drill head 27. A wire rope (not shown) mounted on the hydraulic winch 35 is attached to a 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. The drill rod 36 moves up and down by rewinding.
[0016]
Next, the operation of the drilling machine having the above configuration will be described.
First, at the time of drilling, the raise cylinder 4 is moved forward, the broken cylinder 31 is retracted, the upper and lower leaders 11 and 12 are connected, and the upper leader 11 is attached with the sub leader 33. (See FIGS. 1 and 2). At this time, the feed drive unit 26 and the drill head 27 are connected to each other by the connection bar 29. Therefore, the endless movement of the chain 25 accompanying the rotation of the sprocket 21 causes the drill drive unit 26 to descend simultaneously with the lowering of the feed drive unit 26. The head 27 is lowered.
[0017]
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 point, the rod holder 33 once holds the drill rod 36. Next, after the feeding drive unit 26 and the drill head 27 are raised again, the gripping by the rod holder 33 is released, and this operation is repeated once or twice. The upper end of the drill rod 36 is held on the side, and the drill rod 36 is rotated in this state.
[0018]
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 extracted from the drilling 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.
[0019]
On the other hand, in order to bring the leader 10 into the transporting posture from this state, first, the drill head 27 is lowered to the lower end of the lower leader 12, and in this state, the knock pin 30 is removed and the connection bar 29 is removed. The drill head 27 is separated. Next, when the lock pin 40 is removed, and the raise cylinder 4 is retracted and the folded cylinder 31 is advanced, the upper leader 11 is displaced to a vertical position with respect to the lower leader 12 in a standing state. The reader 11 is mounted and supported on the vehicle body 1 in a horizontal state.
[0020]
As described above, according to the drilling machine of the present invention, the connection bar 29 is connected and disconnected between the drilling operation state and the transporting state by turning the upper leader 11 upside down and installing the drill head on the lower leader 12. Can be easily performed in a short time. Further, the connection / separation work of the connection bar 29 can be performed by a simple work whether or not the knock pin 30 and the lock pin 40 are inserted. Further, a large feed-down force of the drill head 27 can be realized during the drilling operation.
[0021]
【The invention's effect】
As is clear from the above description, according to the drilling machine of the present invention, the following effects can be obtained . Between the drilling operation state and the transporting state, the upper leader can be inverted and the drill head can be installed on the lower leader in a short time and easily. Power can also be realized . Attaching and Detaching work connecting bar can be performed by a simple operation of the pin according to disengagement.
[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 leader of the drilling machine described in the present embodiment.
FIG. 5 is a side partial sectional view showing details of a leader of the drilling machine described in the present embodiment.
6A and 6B are diagrams showing details of a connecting portion between the feed drive unit and the drill head, wherein FIG. 6A is a front partial cross-sectional view, and FIG. 6B is a side partial cross-sectional view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Car body 10 Leader 11 Upper leader 12 Lower leader 21, 22 Sprocket (moving means)
23 Oil motor (moving means)
24 Reducer (moving means)
25 Chain (moving means)
26 Feeding drive unit (moving means)
27 Drill head 29 Connection bar
30 dowel pin 40 lock pin

Claims (1)

A reader formed by connecting an upper reader to the lower reader so as to be inverted, a drill head provided on the reader, a moving means for moving the drill head along the reader, and a vehicle body that supports the reader. In the drilling machine provided,
There is provided a connecting bar interposed between the drill head and the moving means, and a locking means comprising a detachable pin for attaching the connecting bar to each of the drill head and the moving means, drilling machine the drill head moving means, separate from the coupling via the locking means is characterized by being configured freely.

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