JP2922142B2 - Long drilling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drilling device for drilling holes in a construction work of a frame, and more particularly to a long drilling device effective when the drilling length is long.

[0002]

2. Description of the Related Art For example, in the construction of a legal frame, it is necessary to drive a lock bolt pipe at the intersection of the legal frames, and drilling is performed prior to the insertion of the lock bolt pipe.

[0003] A hammer drifter is widely used as a drilling machine for this purpose.

[0004] On the other hand, the present applicant has previously described Japanese Patent Publication No. 2-576.
As disclosed in Japanese Patent Publication No. 12, a drilling device has been proposed in which drilling for inserting a lock bolt pipe is performed at a number of points using a truck crane or the like, and is widely used in practice.

[0005] In the above-mentioned drilling device, the drilling machine main body is structured to move forward and backward in a single guide cell.

[0006] Generally, the longest drilling length needed lock bolt insertion Ri about 5m der, since the length of the drilling machine body is about 1 m, the length of the guide cell and 6m The drilling is done at once without adding drilling rods.

[0007]

However, in special cases, it may be necessary to drill a hole of 5 m or more. In this case, (1) a method of bringing in another drilling rod and adding it after drilling of a certain length is completed,
(2) replenishing a predetermined length of the auxiliary guide cells to the rear end of the guide cell, although it is possible to cope with a method of drilling machine body enables Noriutsuri until the auxiliary guide cell, in these embodiments, Tsugiki The problems described below remain.

In the method (1), an operator must separate the drilling rod from the drilling machine main body and add a new drilling rod, and the time required for this operation is enormous. Further, as described above, when drilling a slope, there is a great danger particularly when working on a slope having a large slope.

In the method (2), a large amount of labor and time are required for the work of adding the auxiliary guide cells. Moreover, in order to address the replenishment of the auxiliary guide cells for existing guide cells, it can not be sufficiently ensured linearity of the guide cell,
This leads to a decrease in drilling accuracy. Also, in order to cope with various drilling lengths, it is necessary to prepare a plurality of types of auxiliary guide cells in advance, which is not desirable in terms of cost.

On the other hand, there is a thought that one long guide cell (for example, 10 m) may be prepared in advance, but the length of the guide cell is limited when transported by truck, and the length of the guide cell is limited in a shaft. It is impossible to carry in drilling holes in narrow places because it cannot be carried. In addition, in a drilling device having a guide cell of 10 m, when drilling with a drilling rod of 5 m or 7 m, the construction efficiency is reduced.

Accordingly, an object of the present invention is to provide a drilling machine which solves these problems at once without depending on the above-mentioned embodiment.

[0012]

According to the present invention, which solves the above-mentioned problems, a drilling machine main body gripping a drilling rod at a tip portion moves forward and backward along a guide cell, and drills a target surface by a forward thrust. In the apparatus, a first device provided for a base of the main body is provided.
Along the longitudinal direction of the first guide cell
Meshed with the chain provided on the
A second guide cell, which is provided so as to be able to move forward and backward by a motor, and is provided along a longitudinal direction of the second guide cell.
The first feed motor meshing with a chain attached
The drilling machine body moving forward and backward by an equipped second feed motor , wherein the second guide cell is configured to retreat when the first feed motor moves backward.
To extend rearward from the rear end of the first guide cell.
And independent of the retraction operation of the second guide cell,
A long hole drilling machine characterized in that the hole drilling machine main body is made retreatable by a second feed motor .

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below. FIG. 1 shows an example in which a drilling device 20 of the present invention is provided for a distal arm 6 of a backhoe M. This mode of attachment to the backhoe M is suitable for drilling in low places, and can be attached to the boom of a truck crane in high places.

As shown in FIG. 1, a backhoe M has a swivel 2 having a driving body, a caterpillar 1 and a driver's seat 2A, hydraulic equipment and control equipment mounted on a caterpillar 1, as shown in FIG. It is provided in.

A boom 3 is provided on the swivel base 2 via a horizontal rotating shaft 4 so as to be able to be raised and lowered. The lower part of the boom 3 is pivotally supported by the swivel 2 and the end of the cylinder rod is connected to the boom 3 by a boom operating cylinder 5.
This is performed by the expansion and contraction operation of. An arm 6 is connected to the end of the boom 3 via a horizontal rotation shaft 7 so that the arm 6 can be turned up and down with respect to the boom 3. The arm 6 has an arm operating cylinder 8 having a lower end pivotally supported by the boom 3 and a distal end of a cylinder rod connected to a rear end of the arm 6.
This is performed by the expansion and contraction operation of. Such a structure is known in backhoes.

In the embodiment, as shown in FIGS. 3 and 4, a bracket 9 is supported on the arm 6 so as to be rotatable around a horizontal rotation axis 9A, and a first lie is connected to the arm 6 at one end. The other end of the cylinder 10 is connected to the bracket 9, and the bracket 9 is attached to the first elevation cylinder cylinder 10 so that the bracket 9 can elevate freely.

The bracket 9 is provided with a swing table 11 via a swing shaft 12 so as to swing freely. The swing table 11 is swung by a swing cylinder 13.

That is, in the embodiment, the rear end of the oscillating cylinder 13 is connected to the oscillating base 11 by a trunnion method via the connecting shaft 13A, and the tip of the cylinder rod is connected to the oscillating base 11 by the connecting shaft 13B. As shown by the imaginary line in FIG. 5, the swing of the swing cylinder 13 allows the swing of the swing cylinder 13 to be about 90 degrees.

Further, on the tip side of the swing table 11,
A drilling device 20 is mounted with a support shaft 14 having a center of rotation in a direction orthogonal to the axial direction. Further, the rear end side of the drilling device 20 and the oscillating table 11 are connected by a second lifting cylinder 15 via connection shafts 15A and 15B at both ends.

In the embodiment, the drilling device 20 has a first guide cell 21 attached to the oscillating base 11 constituting the gantry of the present invention, and moves forward and backward along the first guide cell 21. It has a second guide cell 23 and a hammer drifter 22 that moves back and forth along the second guide cell 23 and constitutes the drilling machine main body of the present invention.

As schematically shown in FIG. 3, the hammer lifter 22 is provided with a feed motor 22A provided on the opposite side to the paper surface of FIG. 3 and meshing with a chain provided along the longitudinal direction of the second guide cell 23. It moves forward and backward along the second guide cell 23 by the rotational driving force. The second guide cell 23 is engaged with a chain provided along the longitudinal direction of the first guide cell 21 and moves along the first guide cell 21 by the rotational driving force of a feed motor 23A provided on the side opposite to the paper surface of FIG. Move forward and backward.

In this specification, a chain type using a chain and feed motors 22A, 23A is exemplified as a mechanism for moving the second guide cell 23 or the hammer drifter 22 forward and backward, but the present invention is not limited to this. It is not something to be done. For example, although not shown, a forward / backward moving mechanism may be configured using a telescopic cylinder.

A drilling rod 25 having a bit 25A at its tip is mounted on the hammer drifter 22, and a rotating and hitting force is applied to the rod 25 using air as a driving source.

As the drilling machine main body, a drilling machine driven by hydraulic pressure or electric power can be used in addition to a hammer drifter driven by air.

Under such a configuration, for example, FIG.
As shown in the figure, backhoe M is parallel to the slope (road direction)
When the turntable 2 is turned to make it orthogonal to the slope E (orthogonal to the road) in a state where the boom 3 and the arm 6 are viewed from above, the boom 3 and the arm 6 are orthogonal to the slope E.

In this state, the boom operating cylinder 5 and the arm operating cylinder 8 are operated to roughly position the drilling device 20 at a target drilling height position. Next, the first cylinder 10 and the second cylinder 15 are operated to make the drilling device 20 perpendicular to the slope. In this case, workability is excellent if the angle of elevation is adjusted by operating the first elevation cylinder 10 and then the angle is finely adjusted by the second elevation cylinder 15. In this state, the hammer drifter 22 is advanced along the second guide cell 23 by the rotational driving force of the feed motor 22A, and then the second guide cell 23 is moved along the first guide cell 21 by the rotational driving force of the feed motor 23A. Is advanced, and drilling is performed by the drilling rod 25.

When the drilling is completed, the drilling device 20
Is retracted from the slope, the boom operating cylinder 5 and the arm operating cylinder 8 are operated to position the drilling device 20 at, for example, an intersection one pitch above the intersection, and the next target intersection position After the rough positioning of the drilling device 20 is performed, the first elevation cylinder 10 and the second elevation cylinder 15 are operated to perform fine adjustment positioning, and then the intersection is drilled. Such a drilling operation is performed on a plurality of intersections in the height direction.

Next, after swinging the swivel 2 at a certain angle with respect to the intersections adjacent in the width direction, the boom operating cylinder 5 and the arm operating cylinder 8 are operated, and the boring device is moved to the adjacent intersection. 20 is roughly positioned. In this case, the swing cylinder 13 is actuated so that the drilling device 20 is moved to the slope E in order to compensate for the swing of the swivel 2 at a certain angle and to make the drilling device 20 perpendicular to the slope E. Make them orthogonal. Usually, after that, the first elevation cylinder 10 and the second elevation cylinder 15 are operated to perform fine adjustment positioning of the drilling device 20, and then the intersection is drilled. Such a drilling operation is performed on a plurality of intersections in the height direction of adjacent intersections. In this case, in order to make the drilling machine 20 perpendicular to the slope E, the swing cylinder 13
It is necessary to fine-tune the swing angle of the camera.

It is necessary to move the backhoe M in the direction of the road in each case to omit the swing by the swing cylinder 13 and to perform the drilling in a state of being orthogonal to the slope E only by the swivel 2. , The workability is reduced.

Thus, drilling can be performed at a position where the boom 3 and the arm 6 can reach without moving the backhoe M. When the reaching distance limit is reached, the backhoe M is moved to the next point, and holes are drilled at all the intersections in the adjacent area.

Thereafter, drilling of the entire target slope E is performed in the same manner.

Now, in the present invention, as explained mainly in connection with FIG. 3, the first mount provided on the gantry, for example, the backhoe M or finally the swing base 11 thereof.
A second guide cell 23 is provided so as to move forward and backward along the guide cell 21, and a hammer drifter 22 constituting the drilling machine body of the present invention, which moves forward and backward along the second guide cell 23, is provided. .

Under such an apparatus, drilling and drawing are performed in the following order. That is, first, as shown in FIG. 3, the second guide cell 23 and the hammer drifter 22
Is retracted to the retreat limit, the hammer drifter 22 is advanced along the second guide cell 23 to the advance limit of FIG. 6 by the rotational driving force of the feed motor 22A. This advance limit is sensed by an appropriate sensing means, and based on the signal, the feed motor 23A is subsequently activated, and the rotation driving force causes the second guide cell 23 to advance along the first guide cell 21, Finally, as shown in FIG. Through these series of processes,
A hitting force and a rotating force are applied to the drilling rod 25 to perform drilling.

At the time of pulling out, as apparent from the progress from the state of FIG. 7 to the state of FIG.
2A is reversed, and the hammer drifter 22 retreats along the second guide cell 23 to the retreat limit. Subsequently, instead of this, the feed motor 23 </ b> A is activated, and the second guide cell 23 moves backward along the first guide cell 21 to the retreat limit. The state of the retreat source shown in FIG.
Is the same as the drilling preparation stage.

It is understood that the order of the forward and backward movement of the hammer drifter 22 and the forward and backward movement of the second guide cell 23 shown in the above example can be modified. For example, from the state shown in FIG. 6, only the second guide cell 23 is advanced along the first guide cell 21, the hammer drifter 22 is kept at the initial position, and then the second guide cell 23 is moved to the first guide cell 21. After moving forward to the advance limit of
The hammer drifter 22 may be advanced.

In the above, the main drilling machine 20 is connected to the backhoe M
In the case of drilling at a high place, the present drilling device 20 may be mounted at the tip of a boom of a truck crane (not shown).
When mounted on a crane, the first hoist cylinder 10 as in the backhoe M is not provided, so that the elevating angle is adjusted only by the second hoist cylinder 15, but the rest is almost the same as the backhoe. is there.

As a development of the idea of the present invention, three or more guide cells can be made to move forward and backward.

[0038]

As described above, according to the present invention, the following effects can be obtained.

(1) Even for a long drilled rod, a predetermined length of drilled hole can be formed at a stroke without adding a rod.

(2) According to the length of the target drilling rod,
By adjusting the position of the second guide cell with respect to the first guide cell, it is possible to take a drilling form corresponding to the length thereof, thereby improving workability and efficiency.

(3) At the time of transportation, the transport of the truck becomes extremely easy by advancing the second guide cell so as to overlap the first guide cell.

(4) Since the second guide cells are assembled in combination with the first guide cells, there is no decrease in drilling accuracy.

[Brief description of the drawings]

FIG. 1 is an overall view of a state in which a drilling device according to the present invention is mounted on a backhoe.

FIG. 2 is a plan view showing a hole drilling state on a slope.

FIG. 3 is an enlarged view of a state in which a drilling device is attached to an arm of a backhoe.

FIG. 4 is a detailed view of a main part thereof.

FIG. 5 is a plan view of the swing table.

FIG. 6 is a front view of an intermediate stage of drilling.

FIG. 7 is a front view of the end state of drilling.

FIG. 8 is a front view of an intermediate stage of drawing.

FIG. 9 is a front view showing a completed state of drilling.

[Explanation of symbols]

2 ... swivel, 3 ... boom, 5 ... boom actuation cylinder,
6 ... arm, 7 ... horizontal shaft, 8 ... arm actuating cylinder, 9 ... bracket, 10 ... first Fukuossha cylinder, 11
... Swing table, 13 ... Swing cylinder, 20: Drilling device, 21: First guide cell, 22: Hammer drifter, 23: Second guide cell, 25: Drilling rod.

Claims (1)

(57) [Claims] A drilling machine body for gripping a drilling rod at its tip moves forward and backward along a guide cell, and drills a target surface by forward thrust. 1 guide cell and a chain provided along the longitudinal direction of the first guide cell.
A second guide cell, which is provided so as to be able to move forward and backward by a first feed motor mounted thereon,
Engage the chain provided along the length of the guide cell.
Separate from the first feed motor
The drilling machine body moving forward and backward by a second feed motor , wherein the second guide cell is configured to retract the first
After the rear end of the first guide cell by the feed motor
, And extend after the second guide cell.
Independently of the retracting operation, the drilling machine main body is moved to the second feed mode.
Long drilling apparatus characterized in that it is freely retracted by coater.