JPH07103764B2 - Drilling rig with tilting rod container device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an excavator with a tilting rod container device for automatically attaching and detaching a boring rod in a boring machine.

[Prior Art] In the conventional boring machine, the boring rod is attached and detached by using a turret, hoisting the boring rod with a hoist, and manually attaching and detaching the boring rod.

However, hoisting the boring rod with
There are dangers in handling heavy drill rods manually, and
This led to a decrease in work speed.

In order to eliminate the above drawbacks, multiple boring rods are stored, and the boring rods are automatically replaced regardless of human power (the boring rods are stored and supplied, or the excavated boring rods are collected. A rod container device (rod magazine device) that can be stored again has been developed.

For example, the device disclosed in Japanese Patent Laid-Open No. 60-14493 has a seventh
As shown in the side view and the plan view of FIGS. 8 and 9, a boring machine equipped with a rod magazine device is known.

The apparatus shown in FIGS. 7 and 8 has a magazine 41 containing a plurality of boring rods 42 in an upright state and swings from the front of the boring machine to the side, and the boring rod 42 from the magazine 41 to the boring position in the front. Or collect the excavated boring rod 42 and store it in the magazine 41.

When the magazine 41 swings to the side or at the side position, the magazine 41 is rotated by one boring rod 42, and when the magazine 41 swings to the front, the boring rod 42 prepared or recovered Prepare rod 42 for storage.

In the rod magazine device, a drill head 43 is fixed to the side of a guide frame 44 that moves up and down, and the rod magazine device is tilted up and down together with the guide frame 44, and is tilted together with the guide frame 44 when the boring machine is moved.

[Problems to be Solved by the Invention] However, in the above-described conventional device, when the guide frame 44 is upright, the magazine 41 swings left and right (to the position of the solid line and the chain line), and the rod magazine device becomes It does not fall down separately from the guide frame 44. Since the guide frame 44 is in the upright state, the boring rod 42 is mounted on or removed from the magazine 41.Therefore, the crane is used to lift the boring rod 42 upright, and the boring rod 44 is vertically held. Must be mounted on a magazine device (rod container device). Therefore, there is a drawback that the mounting work takes time.

Further, as described above, the rod magazine device cannot be tilted alone. Therefore, even when the entire boring machine is moved to change the boring position, the rod magazine device stands upright with the guide frame 44, and in many cases the rod magazine device is mounted with a large number of boring rods 42. Since the aircraft had to be moved, the center of gravity during the movement was high, which tended to cause instability.

The present invention has been made in view of the above-mentioned circumstances, and the rod container device is configured to be independently tilted, and the excavation device with the tiltable rod container device capable of storing and removing the boring rod in a tilted state. Is provided.

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, a base is mounted on a lower traveling body, and a lower end of a retractable boom is pivotally attached to a front portion of the base. In a boring machine equipped with a drill head with a built-in rod chuck that can be moved up and down along the front surface of a pair of guide frames of a boom, the rod clamp attached to the lower end of the drill head and the front part of the base are pivotally attached. Also, a lower end of the container frame is pivotally attached between the pair of guide frames of the up-and-down boom, and the container frame is inclined rearward with respect to the guide frame, a rod container divider attached to the lower part of the container frame, and the container frame. A container shaft rotatably supported between the upper part and the rod container divider; a rod receiving plate fixed to the lower end of the container shaft; A plurality of magazine plates attached to the middle of the shaft, the rod container divider has a built-in drive mechanism for rotating the container shaft by a predetermined angle, and the rod receiving plate supports the lower end of the boring rod below. A plurality of trumpet-shaped receivers are concentrically arranged and a part of which is cut out in a semicircular shape, and the magazine plate is a state in which a bowling rod is erected on the trumpet-shaped receiver, and It is characterized in that a plurality of U-shaped holes which are engaged in parallel with the axis are arranged on a concentric circle and a part of which is cut out in a semicircular shape.

[Operation] With the hoisting boom standing upright, the entire rod container device can be tilted rearward separately from the hoisting boom, or can be erected just like the hoisting boom.

In addition, the container shaft can be rotated by a predetermined angle by the drive mechanism regardless of whether the container shaft is in the upright state, the state in which it is tilted rearward, or in the middle thereof.

[Embodiment] An embodiment of the present invention will be described below with reference to the drawings.

FIG. 5 is a side view of a boring machine having the tilting rod container device of the present invention, and FIG. 6 is a front view thereof.

In the figure, 1 is a rod container device, 2 is a tilting boom, 3 is a drill head, and a rod clamp 3a is attached to the lower end of the drill head. The drill head 3 has a built-in drill chuck (not shown) that opens and closes hydraulically, and is moved up and down along the front surface of the guide frames 2a, 2a by the feeding device 4.

Reference numeral 5 is a rod holder fixed to the front end of the base 6 so as to maintain its position regardless of the raising and lowering of the retractable boom 2.

The rod container 1 has a pair of guide frames 2a, 2a of the tilting boom 2 at the front end of the base 6 like the tilting boom 2.
The lower end is pivotally mounted in between and is configured to fall rearward with respect to the guide frame 2a. That is, the rod container device 1 can both fall backward from the state in which the tilting boom 2 is erected, and the tilting boom 2
It is structured so that it can be fallen backward even when it is erected.

1 is a partially broken side view of the rod container device, and FIGS. 2 (A), 2 (B), and 2 (C) are lines AA and BB in FIG. 1, respectively. C-C line sectional view, FIG. 3 is a vertical sectional view of the rod container divider, and FIG. 4 is III of FIG.
It is a III-line sectional view.

In the figure, 11 (11) is a container frame, the lower end of which is pivotally supported together with a rod container divider 12 on the front part of the base 6 by a pivot 13.

Reference numeral 14 denotes a container shaft, which is rotatably supported between a bracket 15 projecting from the upper end of the container frame 11 and a rod container divider 12, and is rotated at a predetermined angle by a drive mechanism incorporated in the rod container divider 12.

The drive mechanism device is shown in cross section in FIGS. 3 and 4. That is, the rack piston 1 is placed between the cylinders 16, 16.
7, 17 are slidably mounted, the rack 17a of the rack pistons 17, 17 meshes with the pinion 18a, and when the rack piston 17 moves in and out of the cylinder 16, the gear 18b is passed through the gear shaft 18.
Rotates. When the gear 18b rotates, it meshes with the gear 1
Since 9 rotates, the container shaft 14 rotates. The cylinder 16 to the gear 19 are called a drive mechanism.

When the container shaft 14 rotates, the rod receiving plate 20 and the magazine plates 21, 21 fixed to this rotate.

A rotary encoder 22 is attached to the outer end of the gear shaft 18, which detects the rotation angle of the container shaft 14 and adjusts the amount of oil flowing into and out of the cylinders 16, 16 with a hydraulic circuit (not shown). Is rotated by a predetermined angle.

The rod receiving plate 20 is provided with a plurality of trumpet-shaped receiving members 20a (8 in FIG. 2B) which support the boring rod 23 at the lower end in a concentric circle. It is cut out in a circular shape (this semicircular cutout portion is referred to as a cutout portion 20b).

The magazine plates 21, 21 are provided with notches 21b on the same axis as the rod receiving plate 20, and a plurality (8 in FIG. 2A) on the same axis as the trumpet-shaped receiving member on the rod receiving plate 20. ) U-shaped hole is provided on the concentric portion 19 so that the boring rod 23 is engaged.

The rod receiving plate 20 and the notch portions of the magazine plates 21 and 21 allow the drill head 3 to move up and down without any trouble.

Boring rod 23 stored in the rod container device 1
b to 23i are used, and when the U-shaped hole 21a is completely empty, the U-shaped hole 2
It is necessary to newly load all 1a with boring rods.

In this case, the rod container device 1 is inverted backwards to be almost horizontal, and the first boring rod is laid sideways so as to be lifted by a crane, and the first U-shaped hole 21a next to the cutout 21b is directly above. The container shaft 14 is rotated so as to come to the position of, and the boring rod already hung by the crane is inserted into the trumpet-shaped receiving member 20a of the rod receiving plate 20 through the first U-shaped hole 21a.

Next, rotate the container shaft 14 again until the U-shaped hole 21a next to the U-shaped hole 21a in which the first boring rod is inserted is located directly above, and the second boring rod lifted by the crane is moved to the second position. Put it in the U-shaped hole 21a.

As described above, when the third and subsequent boring rods are sequentially loaded into the rod magazine 1, the loading of all the U-order items 21a with boring rods is completed.

Next, press the container shaft 14 until the notch 21b is directly above.
Is rotated, and then the container device 1 is erected.

Next, the operation of attaching and detaching the boring rod by the rod container device 1 will be described.

The boring rod 23 shown by a two-dot chain line in FIGS. 1 and 2 (A) has a boring rod during drilling in the notches 20b and 21b, and the drill head 3 shown in FIGS. 5 and 6 is not shown. While the boring rod 23a screwed to the lower end of the spindle is rotated by the drill head 3, the advancing device 4 lowers the drill head 3 for advancing.

When the feeding for one boring rod 23a is completed, the upper part of the boring rod 23a is gripped by the rod holder 5 shown in FIG. 5, and the spindle in the drill head 3 is rotated in the reverse direction to screw the upper end of the boring rod 23a and the drill. The screw at the tip of the spindle (not shown) built in the head 3 is cut off and the drill head 3 is raised.

When the drill head 3 moves up to the position shown in FIGS. 5 and 6, the drive mechanism built in the container divider 12 is operated to move the boring rod 23b shown in FIG. 2 (A) to the position of 23a. 14 is rotated, then the drill head 3 is lowered, and the drill clamp 3a attached to the lower end of the drill head 3 raises the boring rod 23b to a position where the lower end of the boring rod 23b comes out of the trumpet-shaped receiving member 20a of the rod receiving plate 20. .

In this state, when the rod container device 1 is tilted rearward, the boring rod 23b moves to the U-shaped hole 21a of the magazine plate 21,21,
Since it is disengaged from 21a, the container shaft 14 is rotated in the reverse direction again to return the rod receiving plate 20 and the magazine plates 21, 21 to the positions shown in FIGS. 2 (A) and 2 (B), so that the boring rod 23b has the cutout portion 20b, Comes in a position opposite 21b.

Next, when the rod container device 1 is raised and erected, the boring rod 23b comes to the positions of the notches 20b and 21b.

Next, lower the drill head 3 to move the boring rod 23b.
Grip the lower part of the rod holder 5 (Figs. 5 and 6),
In this state, the drill clamp 3a attached to the lower end of the drill head 3 is released, and the spindle (not shown) of the drill head 3 is rotated to screw the screw at the lower end of the spindle into the boring rod.
23b Screw on the screw at the top.

Next, the boring rod 23b is used for excavation.

In this way, the drilling is performed by sequentially connecting the drilling rods 23c to 23i.

When the excavation is complete, pull out the boring rod and remove it in the reverse order of adding the boring rod described above.

To insert PC piles, steel pipe piles, etc. into the excavated holes, lift the crane on the ground while keeping the piles on the ground sideways.
With b and 21b facing straight up, suspend the rod container device 1 from above from the notched portions 20b and 21b of the tumbled rod container device 1, open the pile guide 25 and insert the pile tip, and after that, use the pile guide 25 to pile the tip of the pile. Is held and held, and then the rod container device 1 is erected.

In this state, the pile is the rod clamp 3a of the drill head 3.
Since the head of the pile guide 25 is located below, the drill head 3 is advanced while the grip of the pile guide 25 is slightly loosened, and the pile is pushed down by the tip of the rod clamp 3a to sink the pile into the excavation hole.

[Effects of the Invention] According to the present invention described in detail above, the following effects are achieved.

In the present invention, a boring rod can be laid sideways at a position directly above the rod container device in a state of being inverted backward, and can be mounted by lifting it with a crane. The rod of can be installed in the same way. Since the rod can be mounted sideways on the container in this state, the rod mounting work is easy and the mounting can be completed in a short time.

Also, when moving the excavator, you can move it while keeping the center of gravity low with the rod container device lying down.
It also improves stability when moving.

In particular, when mounting a pile in the semicircular cutout of the container, you can lift the pile lying on the ground with a crane and mount the pile on the container device with the pile lying down. , Safer and easier.

[Brief description of drawings]

FIG. 1 is a partially broken sectional view of a rod container device of the present invention, and FIGS. 2 (A), 2 (B) and 2 (C) are lines AA and B in FIG. 1, respectively. -B line, CC line sectional view, the third
The figure shows a vertical sectional view of the rod container divider, and Fig. 4 shows the third.
Fig. 5 is a cross-sectional view taken along the line III-III, Fig. 5 is a side view of a boring machine having the tilting rod container device of the present invention, Fig. 6 is the same front view, and Fig. 7 is a conventional rod magazine device. A side view of the boring machine and FIG. 8 are plan views of the same. 1 ... Rod container device, 2 ... Retractable boom, 2a ... Guide frame, 3 ... Drill head, 3a ... Rod clamp, 4 ... Feeding device, 5 ... Rod holder, 6 ... Base Stand, 11 …… Container frame, 12 …… Container divider, 13 …… Axis, 14 …… Container shaft, 15 …… Bracket, 16 …… Cylinder, 17 …… Rack piston, 18 …… Gear shaft, 18a …… Pinion, 18b …… Gear, 19 …… Gear, 20 …… Rod receiving plate, 20a …… Trumpet-like receiving member, 20b …… Notch part, 21 …… Magazine plate, 21a …… U-shaped hole, 21b …… Notch Part, 22 …… Rotary encoder, 30 …… Lower traveling body.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Bibliographic references Sho 62-129490 (JP, U)

Claims (1)

[Claims] 1. A base is mounted on a lower traveling body, and a lower end of a tilting boom is pivotally attached to a front part of the base, and a rod is provided along a front surface of a pair of guide frames of the tilting boom. In a boring machine in which a drill head with a built-in chuck is mounted to move up and down, it is located between a rod clamp mounted on the lower end of the drill head and a pair of guide frames of the tilting boom pivotally mounted on the front part of the base. And a lower end of which is pivotally attached, and which is tilted rearward with respect to the guide frame, a rod container divider attached to the lower part of the container frame, and rotatably supported between the upper part of the container frame and the rod container divider. A container shaft, a rod receiving plate fixed to the lower end of the container shaft, and a plurality of magazis installed in the middle of the container shaft. A plate, the rod container divider has a built-in drive mechanism for rotating the container shaft by a predetermined angle, and the rod receiving plate has a plurality of trumpet-shaped receiving members that support a lower end of the boring rod in a concentric circle. The magazine plate is partially cut out in a semicircular shape, and the magazine plate has a plurality of engaging engagements in parallel with the axis of the container shaft in a state in which a boring rod is erected on the trumpet-shaped receiving member. An excavator with a tiltable rod container device, wherein U-shaped holes are concentrically arranged and a part is cut out in a semicircular shape.