JPH05118037A - Excavator - Google Patents

Abstract

PURPOSE:To reduce machine height by providing a rod rack and successively adding multi-spindle drill pipes, to eliminate possibility, in which a leader falls down, to require no waste hole and to connect a power swivel and the multi- spindle drill pipe and mutual multi-spindle drill pipes easily. CONSTITUTION:An excavator 10 is changed into a unit by a power swivel 12, a frame 14, a rod rack 16 and a rod changer 18. A plurality of multi-spindle drill pipes 24 are housed in the rod rack 16 while the rod rack 16 is adjoined to the frame 14, to which the power swivel 12 is mounted, the multi-spindle drill pipes 24 are carried successively to the lower section of the power swivel 12 by the rod changer 18, and the multi-spindle drill pipes 24 and the power swivel 12 and the mutual multi-spindle drill pipes 24 are connected at the positions of carrying. Accordingly, since the short-sized multi-spindle drill pipes 24 are used as leaders for the power swivel 12, stability is improved and possibility, in which the leaders fall down, is eliminated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an excavator, and more particularly, a power swivel is used to rotate and feed a multi-axial drill pipe, and a multi-axial drill pipe housed in a rod rack is added to excavate an underground wall. Regarding drilling equipment.

[0002]

2. Description of the Related Art Conventionally, an excavator of this type has a power swivel mounted on a long leader installed upright on a base machine so that the power swivel can be vertically moved up and down. While excavating the ground, the power swivel is used to rotate and feed the pipe.

When excavating with the excavator, a leader longer than the excavation depth is used to excavate at once. For example, when excavating a column wall with a length of about 25 m, usually, the long pipe that is connected first is used to excavate at once, but when excavating a column column wall that is deeper than that, the multi-axis drill pipe is sequentially used. I try to excavate by adding more.

[0004]

However, since the conventional excavator uses a drill pipe having a length of 30 m or more, the leader is long and the heavy power swivel is on the top of the excavator, so that the center of gravity of the leader is high. There is a risk that the leader may fall over, especially when moving. On the other hand, when connecting multi-axis drill pipes, it is necessary to avoid working in high places where there is danger and difficulty, and to make it easier to connect the drill pipes to be connected to the power swivel, store them vertically. The hole has to be excavated in advance, which is a troublesome task. Further, it is impossible to provide the dead hole in a narrow place.

The present invention has been made in view of the above circumstances, eliminates the risk of the leader tipping over, does not require a waste hole, and further facilitates the connection between the power swivel and the multiaxial drill pipe. An object of the present invention is to provide a drilling device that can be used.

[0006]

In order to achieve the above-mentioned object, the present invention provides a power swivel, a frame provided with a reader for guiding the power swivel in a vertical direction, and a frame adjacent to the frame. A plurality of multiaxial drill pipes, which are bundled in parallel by a connecting band, are arranged at a predetermined interval in the vertical direction, and a rod rod rack that is housed in the vertical direction. It is characterized by comprising a transport means for transporting between the storage position of the multiaxial drill pipe and the lower part of the power swivel.

[0007]

The feature of the present invention is that the power swivel, the frame,
The excavator is unitized with the rod rack and the transport means, and by using this excavator, the machine height is low and the danger is eliminated to simplify the connecting work. That is, according to the present invention, a plurality of multiaxial drill pipes are housed in a rod rack, a frame having a power swivel attached to the rod rack is adjacent to the rod rack, and the power swivel in a position where the multiaxial drill pipe is raised. Is sequentially conveyed by a conveying means to the lower part of, and at that position, the multiaxial drill pipe and the power swivel, and the multiaxial drill pipe and the excavated multiaxial drill pipe are connected. That is, a multi-axis drill pipe is added to dig deep. As a result, the power swivel reader can be shorter than the conventional reader, so that the stability is good and there is no risk of the reader tipping over. In addition, the rod rack eliminates the need for waste holes, and the pipes to be connected are sequentially conveyed below the power swivel by the conveying means, which facilitates the connection of the power swivel and the multi-axis drill pipe. You will be able to do it.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the excavating device according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a front view showing an embodiment of an excavating device 10 according to the present invention, which is composed of a power swivel 12, a frame 14, a rod rack 16 and a rod changer 18. The frame 14 and the rod rack 16 are provided on the pedestal 20 in the vertical direction. Also, this pedestal 2
Through the opening 22 formed at 0, a three-axis multiaxial drill pipe 24 having a bit 21 at the end shown in FIGS. 1 to 3 is drilled into the ground to form an underground pillar row wall. It Each axis of the multi-axial drill pipe 24 is rotatably bound by a connecting band 26, and the upper end of each is connected to each rotary shaft 28 (28, 28) of the power swivel 12 through a joint portion. , The multi-axis drill pipe 24 with the lower end of each drilled
It is connected to each upper end of A through a joint.
As the structure of the joint, the drill pipe connecting device disclosed in Japanese Patent Application No. 3-189837 previously filed by the applicant of the present application is used.

Further, the excavator 10 is provided with a leveling jack 23 at the corner portion of the pedestal 20.
Since the railcars 30, 30 ... Are attached while holding 0 and excavating, rails 32, 32 laid on the ground
You can move along. Alternatively, the rail car 3
Instead of 0, a caterpillar 33 may be provided as shown in FIG. Reference numeral 35 is a generator and reference numeral 37 is an operator room.

On the other hand, as shown in FIG. 3, the power swivel 12 has guide members 34, 34 fixed to both sides thereof.
Is slidably supported by a pair of elongated leaders 36, 36, and is provided so as to be movable up and down along the leaders 36, 36. The readers 36, 36 are fixed to both sides of the frame 14 and along the longitudinal direction of the frame 14. In addition, below the power swivel 12, the rotary shafts 28, 28, 28 of the power swivel 12 and the multi-axis drill pipe 24 are provided.
A connecting mechanism 38 (38, 38) for connecting each of the digging pipes is provided. Reference numeral 40 is a winch for moving the power swivel 12 up and down via a wire 42, reference numeral 44 is an injection hose, reference numeral 46 is a central air hose, reference numeral 48 is a hydraulic hose, and reference numeral 50 is an energizing cable.

As shown in FIG. 1, the rod rack 16 is arranged on the right side surface of the frame 14. Further, in the rod rack 16, the relatively short multi-axial drill pipes 24, 24 ... Are supported in the rod rack 16 by a pair of upper and lower drill pipe holding devices 52, which will be described later, and housed at equal intervals. As shown in FIG. 4, the upper drill pipe holding device 52 has caps 56, 56, 56, a rod support 58, and a pair of hydraulic cylinders 60, 60.
56, 56 are fixed to the lower surface of the rod support 58 and at a position capable of holding the upper end of each drill pipe of the multiaxial drill pipe 24. The rod support 58 has cylinder rods 62, 62 of the hydraulic cylinders 60, 60 on both sides of the upper surface thereof.
The tip of the is fixed. The hydraulic cylinders 60, 60 are mounted on the upper surface of the rod rack 16. This allows
By extending the cylinder rods 62, 62,
The caps 56, 56, 56 can hold the upper ends of the drill pipes, and the caps 56, 56, 56 can be separated from the upper ends of the drill pipes by contracting as shown in the figure.

As shown in the figure, the lower drill pipe holding device 54 has caps 64, 64, 64, a rod lifter 66, and a pair of hydraulic cylinders 68, 68. The caps 64, 64, 64 are the rod lifters 66. Is fixed to the upper surface of the multi-axial drill pipe 24 at a position where the lower end of each drill pipe can be held. The rod lifter 66 is arranged parallel to the above-mentioned rod support 58, and the tip ends of the cylinder rods 70, 70 of the hydraulic cylinders 68, 68 are fixed to both sides of the lower surface thereof. Hydraulic cylinder 6
Reference numerals 8 and 68 are attached to the lower surface of the rod rack 16. Accordingly, by extending the cylinder rods 70, 70, the lower ends of the pipes can be held by the caps 64, 64, 64, and by contracting the caps 64, 64, 64. It can be separated from the lower end of the.

The upper and lower drill pipe holding devices 52, 54
Are arranged for each of the multiaxial drill pipes 24, 24, ... As shown in FIG. As shown in FIG. 4, the rod changer 18 has a pair of transfer rails 72, 72 disposed on both sides of the rod rack 16, and the transfer rails 72, 72 are connected to the rod 14 from the frame 14 as shown in FIG. It is hung on the rack 16. Further, the left end portions of the transport rails 72, 72 are arranged below the power swivel 12 in the raised position. Further, rod carriers 74, 74 shown in FIG. 4 are movably mounted on the transport rails 74, 74. The rod carriers 74 and 74 are connected to chains 76 and 76 shown by dotted lines in FIGS.
By rotating 6 and 76, the transport rail 7
It can move along 2, 72. The chain 7
The drive motors 78 and 6 are configured to rotate in synchronization with each other.

Further, as shown in FIG. 1, a connecting device 80 for connecting the multiaxial drill pipe 24 and the excavated multiaxial drill pipe 24A is provided at the lower portion of the rod rack 16. This connecting device 80
Has a holder 82 and a fork 84, and the holder 82 is connected to a cylinder rod (not shown) of hydraulic cylinders 86, 86 as shown in FIG. 6, and holds the upper portion of the multiaxial drill pipe 24A by extending the cylinder rod. be able to. The fork 84 includes a hydraulic cylinder 88,
88 is connected to a cylinder rod (not shown), and by extending the cylinder rod, it moves from the position shown in FIG. 1 to the connecting portion 25 and is locked to the connecting portion 25. Then, by lowering the fork, the multiaxial drill pipe 24 and the multiaxial drill pipe 24A are connected (see Japanese Patent Application No. 3-189837).

Next, the operation of the excavator 10 constructed as described above will be described with reference to FIGS. 7 to 11.
First, in FIG. 7, the excavation of the first multi-axis drill pipe 24A is completed,
The power swivel 12 is separated from the multiaxial drill pipe 24A and is raised, and the multiaxial drill pipe 24A is held by the holder 82.
The state held by is shown.

In order to connect the second multiaxial drill pipe 24 (left side in the figure) to the multiaxial drill pipe 24A from this state, first, the rod carriers 74, 74 of the rod changer 18 are guided along the transport rail 72. It moves to the lower part of the connecting band 26 of the multiaxial drill pipe 24. Next, the drill pipe holding device 5 shown in FIG.
4 cylinder rod 70, 70 to extend the multi-axis drill pipe 24
And then the rod lifter 74 is moved below the connecting band 26. Next, with the cylinder rods 62, 62 fixed, the cylinder rods 70, 7
Contract 0. As a result, the multi-axis drill pipe 24 is separated from the chucking devices 52 and 54 and placed on the rod lifters 74 and 74, as shown in FIG. 7. Then, the cylinder rod 62 of the upper digging pipe holding device 52 is actuated to move the rod support 58 to the upper part to release the holding of the digging pipe.

Next, as shown in FIG. 8, the multi-axis drill pipe 24 is moved below the power swivel 12 by moving the rod carriers 74, 74. Power Swivel 12 after transportation
As shown in FIG. 9, the rotating shaft 28 of the power swivel 12 and the upper end portion of the multi-axial drill pipe 24 are simultaneously connected by the connecting mechanism 38 to the three axes. After the connection is completed, the multi-axial drill pipe 24 is lowered together with the power swivel 12, and the lower end of the multi-axial drill pipe 24 and the upper end of the excavated multi-axial drill pipe 24A are connected by the connecting device 80 as shown in FIG. Connect the axes at the same time.
This completes the connection between the multi-axis drill pipes 24.

When the connection is completed, the power swivel 12 is activated to continue excavation as shown in FIG. At this time, the rod carriers 74, 7 of the rod changer 18
By moving 4 to the vicinity of the multi-axial drill pipe 24 to be connected to the third pipe in advance, the next connecting work can be smoothly performed. As described above, in the present embodiment, by repeating the steps shown in FIGS.
It is possible to excavate by sequentially connecting ...

Therefore, the excavation device 10 of this embodiment is provided with the rod rack 16 for accommodating a plurality of multiaxial drill pipes 24, and the polyaxial drill pipes 24 each having a relatively short unit length are sequentially connected. The height of the excavation device 10 is low, the stability of the leader 34 is good, and there is no risk of the leader 34 tipping over. Further, since a plurality of multiaxial drill pipes 24, 24 ... Are stored in the rod rack 16, there is no need for a waste hole,
Further, since the multi-axial digging pipe 24 to be connected is conveyed by the rod changer 18, the power swivel 12, the multi-axial digging pipe 24, and the multi-axial digging pipes can be connected easily and smoothly. Further, after excavation, the multi-axis excavation pipe 24 is detached and attached to the rod rack 16 in the reverse process described above.

[0020]

As described above, according to the excavator according to the present invention, a rod rack stores a plurality of multiaxial drill pipes,
A frame having a power swivel attached is adjacent to the rod rack, and the multi-axial drill pipe is sequentially transported below the power swivel by a transporting means, and the power swivel, the multi-axial drill pipe, and the multi-axial drill pipe are excavated. Since the multi-axis drill pipe can be added by connecting to the shaft drill pipe, the stability is good and there is no risk of the leader tipping over. Further, since the rod rack is provided, a dead hole is not necessary, and the multi-axial drill pipe to be further connected is carried by the carrying means. Therefore, the power swivel and the multi-axial drill pipe, and the multi-axial drill pipes are connected to each other. Can be done easily.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of an excavating device according to the present invention.

FIG. 2 is a perspective view showing another embodiment in which the excavator according to the present invention is provided with a caterpillar.

FIG. 3 is a left side view of FIG.

FIG. 4 is a right side view of FIG.

5 is a plan view of FIG.

FIG. 6 is an explanatory view of a main part showing an embodiment of a drill pipe connecting device of an excavating device according to the present invention.

FIG. 7 is an operation explanatory view of the excavating device according to the present invention.

FIG. 8 is an operation explanatory view of the excavation device according to the present invention.

FIG. 9 is an operation explanatory view of the excavating device according to the present invention.

FIG. 10 is an operation explanatory view of the excavating device according to the present invention.

FIG. 11 is an operation explanatory view of the excavating device according to the present invention.

[Explanation of symbols]

 10 ... Excavation device 12 ... Power swivel 14 ... Frame 16 ... Rod rack 18 ... Rod changer 20 ... Pedestal 24, 24A ... Multi-axis excavation pipe 36 ... Leader 52, 54 ... Excavation pipe holding device 58 ... Rod support 60, 68 ... Hydraulic pressure Cylinder 62, 70 ... Cylinder rod 66 ... Rod lifter 72 ... Conveying rail 74 ... Rod carrier 76 ... Chain 80 ... Coupling device

Claims (2)

[Claims] 1. A power swivel, a frame provided with a leader that guides the power swivel in a vertical direction, a plurality of multiaxial drill pipes that are adjacent to the frame and are bundled side by side with a connection band inside the frame. A rod rod rack that is housed in a vertical direction at a predetermined interval, and the rod rack is disposed on the frame from the rod rack, and the multiaxial drill pipe is located between the storage position of the multiaxial drill pipe and the lower part of the power swivel. An excavating device, comprising: 2. A plurality of multi-axis drill pipes, wherein an upper end of each of the plurality of multi-axis drill pipes is provided in an upper cylinder arranged above the rod rack,
2. The excavating device according to claim 1, wherein each lower end of the excavator is housed and supported in the rod rack by a lower cylinder arranged below the rod rack.