Drilling unit and method for supplying rod-shaped member to drilling device in drilling unit

Abstract

To provide a hole-drilling unit having a simplified structure of a supply device for supplying rod-shaped members.SOLUTION: A drilling unit U includes a drilling device 1 in which a bit 12 is attached to a tip of a rod-shaped member formed of a tube and / or rod, and which drills a hole in the ground M with the bit 12 while extending the rod-shaped member, and a supply device 100 which supplies the rod-shaped member to be extended to the drilling device 1. In the drilling unit U, the supply device 100 includes a storage section 6 capable of storing a plurality of rod-shaped members, and a guide section 64 which is pivotally supported by the storage section 6 so as to be changeable between an expanded state in which the rod-shaped members are expanded outward from the storage section 6 and an accommodated state in which the rod-shaped members are accommodated on the storage section 6 side, and which can support the rod-shaped members in the expanded state. The rod-shaped members stored in the storage section 6 are guided to a guide section 64 in the expanded state, and the rod-shaped members guided to the guide section 64 are transposed from the guide section 64 to the drilling device 1 by raising the drilling device 1 from below the guide section 64 to above the guide section 64.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a drilling unit and a method for feeding rod-shaped members to a drilling device in a drilling unit. [Background technology]

[0002] Patent Document 1 discloses a drilling machine that uses a rod with a drilling tool attached to the tip to drill holes. The drilling machine described in Patent Document 1 is equipped with a rod supply device that supplies multiple rods to the drilling machine body, since deep holes are drilled by connecting multiple rods.

[0003] Moreover, the rod supply device described in Patent Document 1 takes out the rod stored in the rod magazine section to a rod take-out section, and then moves the rod by the rod feed arm to the drilling machine main body. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 11-141264 Summary of the Invention [Problem to be solved by the invention]

[0005] In the rod supply device disclosed in Patent Document 1, a hydraulic cylinder is used to drive a rod feed arm to move the rod to the drilling machine body. This requires a device to control the hydraulic cylinder, which increases the number of parts and complicates the structure.

[0006] An object of the present invention is to provide a hole-drilling unit having a simplified structure of a supply device for supplying rod-shaped members. [Means for solving the problem]

[0007] The present invention is a drilling unit comprising a drilling device in which a bit is attached to the tip of a rod-shaped member consisting of a tube and / or rod, and which drills a hole in the ground with the bit while extending the rod-shaped member, and a supply device which supplies the rod-shaped member to be extended to the drilling device, wherein the supply device comprises a storage section capable of storing a plurality of rod-shaped members, and a guide section which is pivotally supported on the storage section so as to be changeable between an expanded state deployed outside the storage section and a stored state stored on the storage section side, and which is capable of supporting the rod-shaped members in the expanded state, and the rod-shaped members stored in the storage section are guided to the guide section in the expanded state, and the rod-shaped members guided to the guide section are transposed from the guide section to the drilling device by raising the drilling device from below the guide section to above the guide section. Effect of the Invention

[0008] According to the present invention, it is possible to provide a hole-drilling unit having a simplified structure of a supply device for supplying rod-shaped members. [Brief description of the drawings]

[0009] [Figure 1] A diagram showing a cross section along the longitudinal direction of the tunnel of this embodiment and a side view of the drilling unit. [Diagram 2] This is a diagram showing a cross section of the tunnel of this embodiment when viewed from the face side toward the entrance and the front of the drilling unit. [Diagram 3] 2 is a schematic diagram of a hole-drilling section of the hole-drilling device of the present embodiment. FIG. [Figure 4] FIG. 2 is an external view of the double pipe of the present embodiment. [Diagram 5] FIG. 2 is a perspective view of the storage shelf of the present embodiment. [Figure 6] FIG. 2 is a schematic side view of the supply device of the present embodiment. [Figure 7] FIG. 2 is a schematic side view of the supply device of the present embodiment. [Figure 8] FIG. 2 is a schematic side view of the supply device of the present embodiment. [Figure 9] FIG. 2 is a schematic side view of the supply device of the present embodiment. [Figure 10] FIG. 2 is a schematic side view of the supply device of the present embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

[0011] FIG. 1 is a diagram showing a cross section along the longitudinal direction of the tunnel T of this embodiment and a side view of the drilling unit U. FIG. 2 is a diagram showing a cross section of the tunnel T of this embodiment when viewed from the face S side toward the entrance direction, and a front view of the drilling unit U. FIG. 3 is a schematic diagram of the drilling section 10 of the drilling device 1. The drilling unit U of this embodiment is used, for example, when carrying out a ground reinforcement method such as a pre-supporting work for reinforcing the ground M during excavation of the tunnel T. Specifically, the drilling unit U is used in a ground reinforcement method (injection-type long-length pre-supporting method) in which a reinforcing pipe P is inserted into the hole H while drilling a hole H with a drilling bit 12, and then a cement-based or resin-based solidifying material is injected from inside the reinforcing pipe P to leave the reinforcing pipe P in the ground M in front of the face S for reinforcement (see FIG. 1 and FIG. 2). Specifically, a plurality of reinforcing pipes P are installed in the top end of the tunnel T in front of the face S so as to form an arch shape along the circumferential direction of the tunnel T (see FIG. 2). The reinforcing pipe P is driven from the top of the tunnel face S toward the ground M ahead at a specified elevation angle (see Figure 1). The inner wall of the tunnel T is covered with a lining concrete C.

[0012] 1 and 2, the hole drilling unit U includes a hole drilling device 1 and a supply device 100 that supplies a double pipe W, which will be described later. First, the configuration of the hole drilling device 1 will be described with reference to FIGS. 1 to 3.

[0013] As shown in Figures 1 and 2, the drilling device 1 comprises a base 2, a plurality of arms 3 pivotally supported on the base 2, a plurality of booms 4 pivotally supported on the base 2, a drilling section 10 pivotally supported on the tip of each of the arms 3, and a workbench 5 pivotally supported on the tip of each of the booms 4.

[0014] The base 2 has a drive source (not shown) such as an engine or a motor, wheels 2a driven by the drive source, an operation platform 2b for operating the drilling device 1, and outriggers 2c. The drilling device 1 can move freely within the tunnel T by driving the wheels 2a. Note that crawlers may be provided instead of the wheels 2a.

[0015] The arm 3 and the boom 4 are telescopic and extendable. The arm 3 and the boom 4 swing vertically relative to the base 2 by extending and retracting the hydraulic cylinders 3a, 4a. Although not shown, the drilling device 1 also includes a hydraulic cylinder that swings the arm 3 and the boom 4 horizontally relative to the base 2, and a hydraulic cylinder that extends and retracts the arm 3 and the boom 4.

[0016] The extension and swinging of the arm 3 and the boom 4 are performed by an operator operating a lever or the like on the operation console 2b. The extension and swinging of the arm 3 and the boom 4 can also be operated from the work console 5.

[0017] Next, a specific configuration of the hole-drilling unit 10 will be described with reference to Fig. 3. Fig. 3 shows the arm 3 in its most contracted state.

[0018] As shown in Figure 3, the hole-drilling section 10 comprises a guide shell 11 pivotally supported on the tip of the arm 3, a bit 12 for drilling a hole in the ground M, a double tube section 20 to which the bit 12 is attached at its tip, and a drifter 13 for driving the bit 12 via the double tube section 20.

[0019] As shown in Fig. 3, the guide shell 11 has a main body 11a and a carriage 11b on which a drifter 13 is placed and which is provided so as to be movable in the longitudinal direction of the main body 11a. The guide shell 11 swings vertically relative to the arm 3 by extending and retracting a hydraulic cylinder 14, and moves forward and backward relative to the arm 3 by extending and retracting a hydraulic cylinder 15. Furthermore, the guide shell 11 is supported on one end side of the arm 3. The direction of the guide shell 11 can be changed by extending and retracting a hydraulic cylinder (not shown). In this embodiment, the face S side is defined as the "front" and the entrance side of the tunnel T is defined as the "rear".

[0020] The double pipe section 20 has an outer pipe unit 21, which has the bit 12 attached to its tip and which propels the inside of the hole H drilled by the bit 12 together with the bit 12, and a rod unit 22, which has the bit 12 attached to its tip and which is inserted into the inside of the outer pipe unit 21. The bit 12 does not have to be fixed to the tip of the outer pipe unit 21, and it is sufficient if it is disposed at the tip.

[0021] In the hole drilling device 1 of this embodiment, the diameter of the bit 12 is, for example, about 40 mm to 50 mm. The outer diameter of the outer tube unit 21 is set to a value slightly smaller than the outer diameter of the bit 12.

[0022] As shown in FIG. 1, the outer pipe unit 21 has a base outer pipe 21a (rod-shaped member) with a bit 12 attached to its tip, and a connecting outer pipe 21b (rod-shaped member) sequentially connected to the base end (rear end) side of the base outer pipe 21a. The base outer pipe 21a and the connecting outer pipe 21b are made of steel pipes or resin pipes. The base outer pipe 21a and the connecting outer pipe 21b, and the connecting outer pipes 21b are connected to each other by screw connection. In this embodiment, the length of the base outer pipe 21a and the connecting outer pipe 21b is set to, for example, about 3 to 4 m. The bit 12 is rotatably attached to the tip of the base outer pipe 21a. In addition, a plurality of through holes (not shown) made of fine holes are provided in the pipe walls of the base outer pipe 21a and the connecting outer pipe 21b. In this embodiment, the base outer pipe 21a and the connecting outer pipe 21b inserted into the natural ground M, i.e., the outer pipe unit 21, correspond to a reinforcing pipe P that reinforces the natural ground M.

[0023] The rod unit 22 has a base rod 22a (see FIG. 3) with a bit 12 attached to its tip, and a connecting rod 22b (see FIG. 4) that is connected to the base end (rear end) side of the base rod 22a. The base rod 22a and the connecting rod 22b are made of solid rod-shaped metal members. The base rod 22a and the connecting rod 22b, and the connecting rods 22b themselves, are connected by screw connection. The bit 12 is attached to the tip of the base rod 22a by screw fastening. The base end side of the rod unit 22 is connected to the drive shaft 13a of the drifter 13. The overall length of the rod unit 22 is longer than the overall length of the outer tube unit 21. In other words, the base end side of the rod unit 22 protrudes from the base end side of the outer tube unit 21.

[0024] Thus, the double tube section 20 of this embodiment has a double tube structure consisting of a base outer tube 21a, a connecting outer tube 21b, and a base rod 22a and a connecting rod 22b inserted inside the base outer tube 21a and the connecting outer tube 21b.

[0025] As shown in FIG. 3 and other figures, the drilling section 10 further includes a first rod gripping device 16 for gripping the connecting rod 22b to be connected, a second rod gripping device 17 for gripping the base rod 22a or the connecting rod 22b inserted into the natural ground M, an outer tube gripping device 18 for gripping the connecting outer tube 21b to be connected, and outer tube support members 19a, 19b (rod-shaped member support section) for supporting the connecting outer tube 21b. The first rod gripping device 16, the second rod gripping device 17, and the outer tube gripping device 18 are provided on the guide shell 11. The first rod gripping device 16 and the second rod gripping device 17 are used when connecting the base rod 22a and the connecting rod 22b. The outer tube gripping device 18 is used when connecting the base outer tube 21a and the connecting outer tube 21b.

[0026] The drifter 13 has a rotation mechanism driven by a hydraulic motor (not shown) and a hydraulic impact piston (not shown). The rotation mechanism applies a rotational force to the bit 12 via the rod unit 22. The hydraulic motor is configured so that the rotation speed and rotation direction can be controlled. The impact piston applies an impact force to the bit 12 via the rod unit 22. The impact piston is arranged coaxially with the rod unit 22 and repeatedly collides with the base end side of the rod unit 22 to apply an impact force in the axial direction (front-rear direction) of the rod unit 22 to the bit 12. The rotational force and impact force generated by the drifter 13 are transmitted to the bit 12 via the rod unit 22. The bit 12 digs the hole H drilled in the natural ground M deeper by the rotational force and impact force applied by the drifter 13.

[0027] In the hole drilling device 1, the connecting outer pipe 21b and the connecting rod 22b supplied by the supply device 100 are connected to the outer pipe unit 21 and the rod unit 22, respectively, and are extended while drilling a hole H to be formed in the natural ground M. In this embodiment, the hole H is drilled to a length equal to three connecting outer pipes 21b and three connecting rods 22b connected to the base outer pipe 21a and the base rod 22a. The number of connecting outer pipes 21b and connecting rods 22b connected may be two or four or more.

[0028] Next, the supply device 100 will be described with reference to Figs. 5 to 10. Hereinafter, the connected outer connecting pipe 21b and the connecting rod 22b will be collectively referred to as the "double pipe W" (see Fig. 4). In Figs. 6 to 10, in order to easily explain the structure, a beam 62a, which will be described later, is omitted. The pipe supplied by the supply device 100 is not limited to a double pipe, but may be a single pipe (single pipe) or a triple pipe.

[0029] As shown in Figures 6 to 10, the supply device 100 includes a storage shelf 6 (storage section) that stores a plurality of double-walled pipes W, and a lift device 7 that moves the double-walled pipes W stored on the storage shelf 6. The storage shelf 6 and the lift device 7 are provided on a foundation section 8. The foundation section 8 is formed by combining a plurality of metal square timbers or metal pipes.

[0030] As shown in Figure 5, the storage shelf 6 has a number of pillars 61 extending vertically from the upper surface of the base portion 8, beams 62a, 62b arranged horizontally and connecting the pillars 61 to each other, a number of stock sections 63 arranged across a pair of beams 62b facing each other in the short direction and storing the double pipes W, a guide section 64 arranged freely swingably on the longitudinal side of the upper part of the storage shelf 6, an induction section 65 that guides the double pipes W to the guide section 64, and a top plate 66 that covers the upper surface of the storage shelf 6.

[0031] 5, in this embodiment, the support pillars 61 are provided at the four corners. Each support pillar 61 is formed by connecting a plurality of pipes 61a. Note that the support pillar 61 may be formed by a single pipe or a solid long member.

[0032] 5, the beams 62a and 62b are made of plate-like members. The beams 62a and 62b ensure the strength of the storage shelf 6.

[0033] 5, the stock section 63 is configured by a pair of plate-like members spaced apart in the longitudinal direction of the storage shelf 6. The distance between the pair of plate-like members is set to be shorter than the length of the double pipe W.

[0034] In the storage shelf 6 of this embodiment, one unit is composed of the pipe 61a, the beams 62a, 62b, and the stock section 63, and these units are stacked in four levels in the vertical direction. However, this is not limited to this, and the support 61 may be composed of any configuration as long as the stock section 63 can be secured, such as a single pipe or a solid long member. Furthermore, the number of levels of this unit may be three or less, or five or more. Furthermore, the stock section 63 may be composed of three or more plate-like members.

[0035] As shown in Figures 5 to 10, the stock portion 63 is provided so that both ends protrude from the side of the storage shelf 6. Also, as shown in Figures 6 to 10, the stock portion 63 is provided with an inclination so that it gradually becomes lower from the side where the guide portion 64 is provided toward the side where the lift device 7 is provided. A locking piece 63a that protrudes upward is provided at the tip of the stock portion 63 on the lift device 7 side.

[0036] The guide portion 64 swings between an expanded state in which it is expanded outward from the storage shelf 6 (see FIG. 9) and a stored state in which it is folded and stored on the side of the storage shelf 6 (see FIGS. 6 to 8, etc.). The guide portion 64 is composed of a pair of plate-like members whose base ends are each supported by the storage shelf 6 so as to be freely swingable and which are provided at an interval on the longitudinal side surface of the storage shelf 6. In this embodiment, the guide portion 64 is composed of a pair (two) of plate-like members, but it may be composed of three or more plate-like members.

[0037] 6 to 10, a locking piece 64a that protrudes upward when the guide portion 64 is in the expanded state (the state shown in FIG. 9) is provided at the tip of the guide portion 64. Also, the guide portion 64 is provided at an incline so as to become lower from the base end side toward the tip end side when in the expanded state.

[0038] 5, the guide section 65 is configured by a pair of plate-like members spaced apart in the longitudinal direction of the storage shelf 6. The distance between the pair of plate-like members is set to be shorter than the length of the double pipe W.

[0039] The guiding portion 65 is provided on an extension of the guide portion 64. The guiding portion 65 is provided on the topmost stage of the storage shelf 6, but is not limited thereto, and may be provided on the middle stage or the bottommost stage, for example.

[0040] As shown in Figures 5 to 10, the guide section 65 is provided so that the end on the lift device 7 side protrudes from the longitudinal side surface of the storage shelf 6. Also, as shown in Figures 6 to 10, the guide section 65 is provided with an inclination so as to become lower from the lift device 7 side toward the guide section 64 side.

[0041] The beams 62a and 62b, the stock portion 63, the guide portion 64, and the guiding portion 65 may be formed of rod-shaped members having a circular or rectangular cross section. Moreover, these are not limited to solid members, and may be hollow members.

[0042] The lift device 7 is composed of a lifter that is raised and lowered by, for example, a motor (not shown) or a hydraulic cylinder (not shown). Specifically, as shown in Figures 6 to 10, the lift device 7 includes a support part 71 that supports the double pipe W from below, a lifting mechanism 72 that raises and lowers the support part 71 (moves it up and down), and a moving mechanism 73 that moves the lifting mechanism 72 in the horizontal direction.

[0043] The support portion 71 has a pair of forks 71a and a pipe support portion 71b that is provided on an upper surface of each of the forks 71a and supports the double pipe W.

[0044] The lifting mechanism 72 includes a drive mechanism including a motor and a hydraulic cylinder. In the lifting mechanism 72, the drive mechanism is driven to raise and lower the support portion 71 relative to the support column 74. The lifting mechanism 72 may be, for example, a manual type. Specifically, the lifting mechanism 72 may be configured to raise and lower the support portion 71 by manually rotating a handle, for example.

[0045] The moving mechanism 73 includes a drive mechanism including a motor (not shown) and a hydraulic cylinder (not shown). By driving the drive mechanism, the moving mechanism 73 moves the support column 74, the lifting mechanism 72, and the support section 71 together in the horizontal direction (the left-right direction on the paper of Figs. 6 to 10) on the support base 75. The moving mechanism 73 may be of a manual type that is moved by an operator pushing or pulling it.

[0046] Next, a method for supplying the double pipe W (the connecting outer pipe 21b and the connecting rod 22b) to the hole-drilling section 10 using the supply device 100 will be specifically described with reference to Figs.

[0047] First, the lifting mechanism 72 and the moving mechanism 73 are driven to move the support part 71 of the lift device 7, more specifically, the pipe support part 71b of the support part 71, so that it is positioned directly below the double pipe W to be picked up (see Figure 6).

[0048] Next, the lifting mechanism 72 is raised to pick up the double-walled pipe W onto the pipe support portion 71b of the support portion 71 (see FIG. 7). At this time, the fork 71a of the support portion 71 and the stock portion 63 do not interfere with each other because they are both made of rod-shaped members. When the double-walled pipe W is picked up, because the stock portion 63 is set at an angle, the double-walled pipe W stored in the stock portion 63 of this stage rolls until it abuts against the locking piece 63a (the state shown in FIG. 8).

[0049] From the state shown in Figure 7, the lifting mechanism 72 and the moving mechanism 73 are driven to move the support part 71 so that the double tube W supported on the tube support part 71b of the support part 71 is positioned above the guide part 65 (see Figure 8).

[0050] From the state shown in FIG. 8, the lifting mechanism 72 is driven to lower the support portion 71, and the double pipe W is transposed from the pipe support portion 71b of the support portion 71 onto the guide portion 65.

[0051] As described above, the guide section 65 is inclined so as to become lower from the lift device 7 side toward the guide section 64 side, so that the double tube W transposed onto the guide section 65 rolls on the guide section 65 toward the guide section 64 side (see Figure 9).

[0052] Then, when the double pipe W rolling on the induction section 65 hits the guide section 64 in the stored state, the guide section 64 is pushed down toward the outside of the storage shelf 6 and goes into the deployed state (see FIG. 9). As described above, the guide section 64 is inclined so as to become lower from the base end side toward the tip end side in the deployed state, so when the guide section 64 goes into the deployed state, the double pipe W rolls on the guide section 64 toward the tip. Then, when the double pipe W hits the locking piece 64a provided at the tip of the guide section 64, the double pipe W stops (see FIG. 9).

[0053] In the state shown in Figure 9, the hydraulic cylinder 3a of the arm 3 of the hole-drilling device 1 is driven to move the hole-drilling section 10 so that the outer tube support members 19a, 19b provided on the guide shell 11 of the hole-drilling section 10 are positioned directly below the double tube W abutting the locking piece 64a of the guide section 64 (see Figure 10).

[0054] Then, the hole-drilling section 10 is raised, and the double pipe W is transposed from above the guide section 64 to the outer pipe support members 19a, 19b provided on the guide shell 11 (see FIG. 10). At this time, the guide section 64 is composed of a plate-like member, and the outer pipe support members 19a, 19b are composed of plate-like members arranged parallel to the extension direction of the rod-like members of the guide section 64, so that they can be prevented from interfering with each other.

[0055] As the hole-drilling section 10 rises further, the tip side of the guide section 64 comes into contact with the main body section 11a of the guide shell 11, and the tip side of the guide section 64 is lifted. As the hole-drilling section 10 rises further, the guide section 64 is folded in conjunction with the rise of the hole-drilling section 10, and changes from the unfolded state to the stored state.

[0056] Thereafter, the hydraulic cylinder 3a of the arm 3 and the like are driven to move the double pipe W close to the double pipe section 20 inserted into the ground M, and the double pipe W (connecting outer pipe 21b, connecting rod 22b) is connected to the double pipe section 20.

[0057] In this manner, in the supply device 100 of this embodiment, the double pipe W guided to the guide section 64 can be transferred to the hole drilling device 1 by raising the hole drilling device 1 from below the guide section 64. In other words, the supply device 100 does not require a hydraulic cylinder or the like for transferring the double pipe W from the storage shelf 6 to the hole drilling section 10, and therefore the structure can be simplified.

[0058] In the above embodiment, the supply device 100 supplies the double pipe W to the hole-making section 10, but the supply device 100 can also be used for a hole-making device that connects only a rod to make holes. The supply device 100 can also be used when supplying only an outer pipe.

[0059] Furthermore, the portion between the pair of beams 62b of the stock portion 63 and the guide portion 65 may be formed, for example, by a plate-like member that covers the entire area defined by the beams 62a, 62b.

[0060] The guide portion 64 does not necessarily have to be returned to the stored state. For example, the guide portion 64 may be configured to return to the deployed state again after the hole-drilling portion 10 picks up the double pipe W from the guide portion 64 and rises. Also, a spring may be provided to bias the guide portion 64 to the stored state. In this case, when the double pipe W is not present on the guide portion 64, the guide portion 64 can be reliably returned to the stored state.

[0061] The drilling unit U configured as above has the following advantages.

[0062] In the hole drilling unit U of this embodiment, the double pipe W guided to the guide part 64 can be transposed to the hole drilling device 1 by raising the hole drilling device 1 from below the guide part 64. This eliminates the need to provide a hydraulic cylinder or the like in the supply device 100 for transposing the double pipe W from the storage shelf 6 to the hole drilling part 10. This allows the structure of the supply device 100 to be simplified.

[0063] In the drilling unit U, the guide part 64 has a locking piece 64a that restricts the movement of the double pipe W (rod-shaped member) guided to the tip of the guide part 64 in the deployed state. This makes it possible to prevent the double pipe W (rod-shaped member) guided to the guide part 64 from falling, and to hold the double pipe W (rod-shaped member) in a predetermined position.

[0064] In the hole-drilling unit U, the supply device 100 further includes a lift device 7 that moves the double pipe W (rod-shaped member) upward, and a guide section 65 that guides the double pipe W (rod-shaped member) moved by the lift device 7 to the guide section 64, so there is no need to manually carry the double pipe W (rod-shaped member) to the guide section 64. This makes it possible to improve workability and safety.

[0065] In the drilling unit U, the guide section 65 is inclined so as to become lower from the lift device 7 side toward the guide section side, so there is no need to provide a device for moving the double pipe W (rod-shaped member) from the guide section 65 to the guide section 64. This simplifies the structure of the supply device 100.

[0066] Furthermore, in the hole-drilling unit U, the guide part 64 is swung from the stored state to the deployed state by the double pipe W (rod-shaped member) led from the guide part 65, and is swung from the deployed state to the stored state in the process of raising the hole-drilling device 1 from below the guide part 64 to above the guide part 64, so there is no need to provide a device for swinging the guide part 64. Therefore, the structure of the supply device 100 can be simplified.

[0067] In addition, in the drilling unit U, the storage shelf 6 has a top plate 66 that covers the upper surface of the storage shelf 6. This makes it possible to prevent soil and water scattered during the drilling work from getting on the double pipe W stored in the storage shelf 6.

[0068] Although the embodiments of the present invention have been described above, the above-mentioned embodiments merely show some of the application examples of the present invention, and it is not intended that the technical scope of the present invention be limited to the specific configurations of the above-mentioned embodiments.

[0069] In the above embodiment, an example was described in which the hole-drilling device 1 was used to carry out ground reinforcement methods such as pre-reinforcing work to reinforce the ground M, but the present invention is not limited to this and can also be used, for example, for drilling long holes in the ground M for loading explosives.

[0070] It is not necessary to provide both the outer tube supporting members 19a and 19b. In this case, for example, the connecting outer tube 21b supplied by the supply device 100 may be supported by the outer tube supporting member 19a and the outer tube gripping device 18. [Explanation of symbols]

[0071] DESCRIPTION OF SYMBOLS 1...Drilling device, 2...Base body, 3...Arm, 3a...Hydraulic cylinder, 4...Boom, 4a...Hydraulic cylinder, 5...Work table, 6...Storage shelf, 7...Lifting device, 8...Foundation section, 10...Drilling section, 11...Guide shell, 11a...Main body section, 11b...Carriage, 12...Bit, 13...Drifter, 13a...Drive shaft, 16...First rod gripping device, 17...Second rod gripping device, 18...Outer tube gripping device, 19a...Outer tube support member, 19b...Outer tube support member, 20...Double tube section, 21...Outer tube unit, 21a...Base outer tube (rod-shaped member), 21b...Connecting outer tube ( rod-shaped member), 22... rod unit, 22a... base rod (rod-shaped member), 22b... connecting rod (rod-shaped member), 61... support, 61a... pipe, 62a... beam, 62b... beam, 63... stock section, 63a... locking piece, 64... guide section, 64a... locking piece, 65... guide section, 66... ​​top plate, 71... support section, 71b... pipe support section, 72... lifting mechanism, 73... moving mechanism, 74... support, 75... support stand, 100... supply device, H... hole, M... natural ground, P... reinforcing pipe, S... face, T... tunnel, U... drilling unit, W... double pipe (rod-shaped member)

Claims

1. a drilling device in which a bit is attached to a tip of a rod-shaped member formed of a tube and / or a rod, and the bit is used to drill a hole in the natural ground while extending the rod-shaped member; A drilling unit including: a supply device that supplies the rod-shaped member to be extended to the drilling device; The supply device comprises: a storage section capable of storing a plurality of the rod-shaped members; a guide portion pivotally supported on the storage portion so as to be changeable between a deployed state deployed outwardly of the storage portion and a stored state stored in the storage portion, and capable of supporting the rod-shaped member in the deployed state; The rod-shaped member stored in the storage portion is guided to the guide portion in the deployed state, A drilling unit in which the rod-shaped member guided to the guide portion is transposed from the guide portion to the drilling device by raising the drilling device from below the guide portion to above the guide portion.

2. 2. The drilling unit according to claim 1, The guide portion is a drilling unit having a locking piece that restricts the movement of the rod-shaped member guided to the tip of the guide portion when the guide portion is in the expanded state.

3. 2. The drilling unit according to claim 1, The drilling device is A guide shell; a rod-shaped member support portion that supports the rod-shaped member on the guide shell, The guide shell is a drilling unit that is movable in the vertical direction.

4. 2. The drilling unit according to claim 1, The supply device comprises: a lift device that is provided on the opposite side of the storage section from the guide section and moves the rod-shaped member stored in the storage section upward; The drilling unit further comprises a guide section provided above the storage section and guiding the rod-shaped member moved by the lift device to the guide section.

5. A drilling unit according to claim 4, The guide portion is a drilling unit that is inclined so as to become lower from the lift device side toward the guide portion side.

6. A drilling unit according to claim 4 or 5, The guide portion is The rod-shaped member is guided from the guide portion to swing from the stored state to the deployed state, A drilling unit that is swung from the deployed state to the stowed state during the process of raising the drilling device from below the guide portion to above the guide portion.

7. A method for supplying the rod-shaped member to the drilling device in the drilling unit according to claim 1, comprising the steps of: the guide portion has a locking piece that restricts movement of the rod-shaped member guided to a tip end of the guide portion in the expanded state of the guide portion, The drilling device is A guide shell that is movable in the vertical direction; a rod-shaped member support portion that supports the rod-shaped member on the guide shell, The guide shell is moved so that, in the expanded state of the guide portion, the rod-shaped member support portion is positioned directly below the rod-shaped member that is in contact with the locking piece of the guide portion; A method in which the guide shell is raised and the rod-shaped member is displaced from above the guide portion to the rod-shaped member support portion.

8. 8. The method according to claim 7, further comprising: After the rod-shaped member is displaced from the guide portion to the rod-shaped member support portion, the guide shell is further raised to lift the tip side of the guide portion using the guide shell, and the guide portion is folded to assume the stored state.

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