Drilling apparatus and drilling method

Abstract

The present invention provides a drilling apparatus and drilling method that enable easy adjustment of the drilling direction, even when rails are laid along a slope. [Solution] The drilling device 1 comprises a trolley 3 that can travel on rails R laid along the direction of inclination of the slope S, and a drilling unit 5 positioned on the trolley 3 and capable of drilling into the slope S. The trolley 3 comprises wheels 36 that can roll on rails R, a base 31 that rotatably supports the wheels 36, a support part 33 that is rotatably provided relative to the base part 31 at the upper inclined end of the trolley 3, and a rotational drive unit 38 that rotates and raises the support part 33 relative to the base part 31, with the drilling unit 5 positioned on the upper surface of the support part 33.

Description

Technical Field

[0001] The present invention relates to a drilling device and a drilling method for performing drilling along a rail laid on an inclined surface.

Background Art

[0002] Conventionally, there is known a drilling device that runs a base to a destination using a rail as a guide and performs drilling in a state where the base is stabilized by outriggers (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the drilling device described in the above patent document, when the rail is laid along an inclined surface, the base also inclines in the same manner as the inclination of the rail. In this case, the operation of adjusting the direction of the drilling part so that the drilling direction faces the vertical direction becomes complicated, and the number of work steps increases.

[0005] The present invention has been made in view of the above situation, and the problem to be solved by the present invention is to provide a drilling device and a drilling method that can easily adjust the drilling direction even when the rail is laid along an inclined surface.

Means for Solving the Problems

[0006] In order to solve the above problems, the present invention constitutes the following drilling device.

[0007] (1) A drilling device comprising a trolley capable of traveling on rails laid along the direction of the slope of a slope, and a drilling section disposed on the trolley and capable of drilling holes in the slope, wherein the trolley comprises wheels capable of rolling on the rails, a base that rotatably supports the wheels, a support section rotatably provided relative to the base at the upper end of the trolley on the slope, and a rotational drive section that rotates and raises the support section relative to the base, and the drilling section is disposed on the upper surface of the support section.

[0008] (2) The drilling device according to (1), wherein the drilling section comprises a base plate, a leader assembled in a direction perpendicular to the base plate, and a drilling machine that can move back and forth along the leader, the base plate is positioned at a variable relative angle to the support on the upper surface of the support, and the base plate is provided with a pair of outriggers on the lower inclined end of the trolley, sandwiching the rail, and the length of each outrigger extending toward the slope is adjustable.

[0009] (3) The drilling device according to (1), wherein the drilling section comprises a base plate, a leader assembled in a direction perpendicular to the base plate, and a drilling machine that can move back and forth along the leader, the base plate being positioned at a variable relative angle to the support on the upper surface of the support, and the base plate being provided with a pair of outriggers on either the upper or lower inclined end of the trolley, sandwiching the rail, and the length of each outrigger extending toward the slope is adjustable.

[0010] (4) The drilling apparatus according to (3), wherein the leader and the drilling machine are detachably provided on the base plate in the drilling section.

[0011] (5) The drilling apparatus according to (4), wherein a crane is provided in the drilling section.

[0012] (6) A drilling device according to any one of (1) to (5), comprising a running drive unit for moving the trolley along the rail.

[0013] Furthermore, the present invention provides the following drilling method to solve the aforementioned problems.

[0014] (7) A drilling method performed with a drilling apparatus comprising a trolley capable of traveling on rails laid along the direction of the slope of a slope, and a drilling unit disposed on the trolley and capable of drilling holes in the slope, wherein the trolley comprises wheels capable of rolling on the rails, a base that rotatably supports the wheels, a support portion rotatably provided relative to the base at the upper end of the trolley on the slope, and a rotational drive unit that rotates the support portion relative to the base, the drilling unit comprises a base plate, a leader assembled in a direction perpendicular to the base plate, and a drilling machine capable of moving back and forth along the leader, and the base plate is the A drilling method comprising: a rotation drive step of driving the rotation drive unit to position the support unit substantially horizontally; an adjustment step of adjusting the extension length of the outriggers to position the base plate horizontally; and a drilling step of lowering the drilling machine along the leader to drill holes in the slope.

[0015] (8) The drilling method according to (7), wherein the leader and the drilling machine are detachably provided in the drilling section with respect to the base plate, the drilling section is provided with a crane, and the method comprises an assembly step in which the leader and the drilling machine are assembled to the base plate using the crane before the drilling step.

[0016] (9) The drilling device includes a drive unit that moves the trolley along the rail, The drilling method according to (7) or (8), wherein the trolley is driven by the aforementioned driving unit to perform continuous drilling along the rail. [Effects of the Invention]

[0017] According to the drilling device and the drilling method according to the present invention, even when the rail is laid along the slope, the effect of being able to easily adjust the drilling direction is achieved.

Brief Description of the Drawings

[0018] [Figure 1] Front view showing the drilling device in the drilling state. [Figure 2] Side view showing the drilling device on flat ground. [Figure 3] Front view showing the state where the base plate is arranged with respect to the carriage. [Figure 4] Side view showing the drilling device on the slope. [Figure 5] Side view showing the drilling device in a state where the support part is raised and rotated. [Figure 6] Side view showing the drilling device in a state where the connecting leg is fixed to the slope. [Figure 7] Side view showing the drilling device in a state where the connecting leg and the telescopic leg are connected. [Figure 8] Side view showing the drilling device in a state where the leader and the drilling machine are assembled to the base plate. [Figure 9] Front view showing the drilling device when assembling the leader and the drilling machine to the base plate. [Figure 10] Front view showing the drilling device in a state where the leader and the drilling machine are assembled to the base plate.

Mode for Carrying Out the Invention

[0019] The schematic configuration of the drilling device 1 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. As shown in FIG. 1, the drilling device 1 includes a carriage 3 that can travel on a rail R laid along the inclination direction of a slope S, a drilling unit 5 that is arranged on the carriage 3 and can drill holes in the slope S, and a traveling drive unit 2 that causes the carriage 3 to travel along the rail R. In the drilling device 1 according to the present embodiment, by pulling and traveling the carriage 3 with the traveling drive unit 2, it is possible to continuously drill holes along the rail R.

[0020] The drilling device 1 according to this embodiment is used, for example, when constructing a rockfall prevention fence to catch falling rocks on a slope S where rockfalls are expected. Specifically, rails R are laid at the location where the rockfall prevention fence will be installed, and the drilling device 1 is used to drill multiple holes along the rails R. Then, concrete or metal pillars are inserted and embedded in each of the multiple holes drilled by the drilling device 1, and the rockfall prevention fence is installed using these pillars.

[0021] The rail R on which the drilling device 1 runs consists of three rails (first rail R1, second rail R2, and third rail R3), as shown in Figure 3. Each rail is continuously supported by multiple support columns P erected on the ground G (see Figure 2) or slope S (see Figure 1).

[0022] As shown in Figure 1, the trolley 3 is connected to the drive unit 2 via a chain 2a. The drive unit 2, which is equipped with an engine, moves along the rail R, allowing the trolley 3, which is towed by the drive unit 2, to also travel along the rail R.

[0023] The carriage 3 of the drilling device 1 according to this embodiment is composed of a base 31, a hinge 32, a support part 33, wheels 36, rollers 37, 37, a rotary drive part 38, a cylinder 39, and a rod 39a, etc.

[0024] In the bogie 3, the base 31 is a base member located above the rail R. The base 31 rotatably supports the wheels 36 (upper wheel 36a and lower wheel 36b) and rollers 37. The wheels 36 and rollers 37 are capable of rolling on the rail R.

[0025] Specifically, the upper wheel 36a and lower wheel 36b of the wheel 36 clamp the first rail R1 from above and below. This allows the wheel 36 to roll along the first rail R1. In addition, the two rollers 37-37 are able to roll on the upper surfaces of the second rail R2 and the third rail R3. With these wheels 36 and rollers 37-37, the base 31 is able to travel along the rails R.

[0026] In the trolley 3, a support portion 33 is rotatably provided on the inclined upper end of the base portion 31 (upper right end in Figure 1) via a hinge 32. A front plate 34 is provided on the inclined upper end of the support portion 33. A rear plate 35 is provided on the inclined lower end of the support portion 33.

[0027] A rotary drive unit 38 is fixed to the base 31 of the trolley 3, and a cylinder 39 that houses a rod 39a so as to be able to move forward and backward is rotatably mounted on the rotary drive unit 38. The rotary drive unit 38 is connected to a hydraulic unit 6, which will be described later, and the rod 39a is configured to move forward and backward from the cylinder 39 by oil supplied from the hydraulic unit 6.

[0028] The tip of the rod 39a is connected to the inclined lower end (left end in Figure 1) of the support portion 33. As the rod 39a extends from the cylinder 39, the support portion 33 rotates upward so as to move away from the base portion 31 (see Figure 1). As the rod 39a retracts into the cylinder 39, the support portion 33 rotates downward so as to move closer to the base portion 31 (see Figure 4).

[0029] As shown in Figure 1, in the drilling apparatus 1 according to this embodiment, the drilling section 5 is positioned on the upper surface of the support section 33 of the trolley 3. The drilling section 5 comprises a base plate 51, a plurality of outriggers 54, a leader 56 assembled in a direction perpendicular to the base plate 51, a drilling machine 57 that can move back and forth along the leader 56, and a drill 58 provided at the lower end of the drilling machine 57.

[0030] In this embodiment, as shown in Figure 9, the leader 56, drilling machine 57, and drill 58 are detachably mounted to the base plate 51. The attachment and detachment of the leader 56, drilling machine 57, and drill 58 is performed via the crane 7. This configuration facilitates adjustment of the horizontal position of the base plate 51, as will be described later.

[0031] A hydraulic unit 6 and a crane 7 are mounted on the upper surface of the base plate 51. The hydraulic unit 6 is connected to a hydraulic pump (not shown) and a hydraulic circuit. The hydraulic unit 6 is also connected to the rotary drive unit 38, the crane 7, the drilling machine 57, and the outriggers 54 (described later) by hydraulic circuits. This allows the user of the drilling device 1 to operate the hydraulic unit 6 to drive the rotary drive unit 38, the crane 7, the drilling machine 57, and the outriggers 54.

[0032] In the drilling apparatus 1 according to this embodiment, the base plate 51 is positioned on the upper surface of the support portion 33 at a variable relative angle to the support portion 33. Furthermore, a pair of outriggers 54-54 are provided on the base plate 51 via the leg base 52 and leg support portion 53, sandwiching the rail R at the lower inclined end of the trolley 3. Additionally, a pair of outriggers 54-54 are also provided on the base plate 51 at the upper inclined end of the trolley 3, sandwiching the rail R. Note that it is sufficient for the pair of outriggers 54-54 to be provided at least at the lower inclined end of the trolley 3.

[0033] In the drilling section 5, the length of each outrigger 54 extending toward the slope S is adjustable. Specifically, the outrigger 54 comprises an outer cylinder 54a and a telescopic leg 54b that is housed in the outer cylinder 54a so as to be able to move forward and backward. The telescopic leg 54b can be moved forward and backward from the outer cylinder 54a by operating the hydraulic unit 6.

[0034] The drilling method performed by the drilling device 1 according to this embodiment will be explained with reference to Figures 1 to 10. First, as shown in Figures 2 and 3, a unit consisting of a base plate 51, leg base 52, leg support 53, outrigger 54, hydraulic unit 6, and crane 7, which are integrally assembled, is placed on the upper surface of the support portion 33 of the trolley 3 located on the ground G.

[0035] Subsequently, as shown in Figure 4, the traction unit 2 pulls the trolley 3 to move it to the slope S. On the slope S, as shown in Figure 5, the rotation drive unit 38 is driven to position the support unit 33 approximately horizontally (rotation drive process). As a result, the position of the base plate 51 positioned on the upper surface of the support unit 33 is also approximately horizontal.

[0036] Furthermore, as shown in Figure 6, an upwardly extending connecting leg 55 is fixed to the lower side of the outrigger 54 on the slope S. Then, as shown in Figure 7, the telescopic leg 54b is extended from the outrigger 54 and connected to the connecting leg 55. At this time, the base plate 51 is positioned horizontally by adjusting the extension length of the telescopic leg 54b (adjustment step). In detail, the base plate 51 is adjusted so that it is horizontal both in the direction of the slope S (left-right direction in Figure 7) and in the direction perpendicular to the direction of the slope S (depth direction in Figure 7).

[0037] Furthermore, as shown in Figures 8 to 10, the leader 56, drilling machine 57, and drill 58 are assembled onto the base plate 51 using the crane 7 (assembly process). Then, as shown in Figure 1, the drilling machine 57 and drill 58 are lowered along the leader 56 to drill holes in the slope S (drilling process).

[0038] As described above, according to the drilling device 1 and the drilling method using the drilling device 1 according to this embodiment, even when the rail R is laid along the slope S as in this embodiment, the support portion 33 of the trolley 3 can be rotated and raised relative to the base portion 31 by the rotational drive unit 38. Therefore, the base plate 51 can be positioned approximately horizontally when drilling, making it possible to easily adjust the drilling direction.

[0039] Furthermore, according to the drilling device 1 and the drilling method using the drilling device 1 according to this embodiment, by making the extension length of the pair of outriggers 54 provided on either side of the rail R adjustable, the base plate 51 can be positioned horizontally before the drilling process in both the direction of inclination of the slope S and in a direction perpendicular to the direction of inclination. This makes it possible to adjust the drilling direction more easily. [Explanation of Symbols]

[0040] 1. Drilling device 2. Travel drive unit 2a Chain 3 Trolley 5 Drilling section 6 Hydraulic unit 7 Cranes 31 Base 32 Hinge 33 Support section 34 Front plate 35 Rear plate 36a Upper wheel 36b Lower wheel 37 Roller 38 Rotary drive unit 39 Cylinder 39a Rod 51 Base plate 52 Leg base 53 Leg support section 54 Outrigger 54a Outer cylinder section 54b Telescopic legs 55 Connecting legs 56 Leader 57 Drilling machine 58 Drill R Rail R1 First Rail R2 Second rail R3 Third rail P Support G Ground S slope

Claims

1. A drilling device comprising a trolley capable of traveling on rails laid along the direction of the slope of a slope, and a drilling unit positioned on the trolley and capable of drilling holes in the slope, The trolley comprises wheels that can roll on the rails, a base that rotatably supports the wheels, a support portion that is rotatably provided relative to the base at the inclined upper end of the trolley, and a rotational drive unit that rotates and raises the support portion relative to the base. A drilling device in which the drilling portion is positioned on the upper surface of the support portion.

2. The drilling unit comprises a base plate, a leader assembled in a direction perpendicular to the base plate, and a drilling machine that can move back and forth along the leader. The base plate is positioned on the upper surface of the support portion at a variable relative angle to the support portion. The base plate is provided with a pair of outriggers that are attached to the lower inclined end of the trolley, sandwiching the rail. The drilling apparatus according to claim 1, wherein the length of each of the outriggers extending toward the slope is adjustable.

3. The drilling unit comprises a base plate, a leader assembled in a direction perpendicular to the base plate, and a drilling machine that can move back and forth along the leader. The base plate is positioned on the upper surface of the support portion at a variable relative angle to the support portion. The base plate is provided with a pair of outriggers, which are attached to the upper and lower ends of the trolley, with the rail in between. The drilling apparatus according to claim 1, wherein the length of each of the outriggers extending toward the slope is adjustable.

4. The drilling apparatus according to claim 3, wherein the leader and the drilling machine are detachably provided in the drilling section with respect to the base plate.

5. The drilling apparatus according to claim 4, wherein a crane is provided in the drilling section.

6. A drilling apparatus according to any one of claims 1 to 5, comprising a driving unit for moving the trolley along the rail.

7. A drilling method performed with a drilling apparatus comprising a trolley capable of traveling on rails laid along the direction of the slope of a slope, and a drilling unit positioned on the trolley and capable of drilling holes in the slope, The trolley comprises wheels that can roll on the rails, a base that rotatably supports the wheels, a support portion that is rotatably provided relative to the base at the inclined upper end of the trolley, and a rotational drive unit that rotates the support portion relative to the base. The drilling unit comprises a base plate, a leader assembled in a direction perpendicular to the base plate, and a drilling machine that can move back and forth along the leader. The base plate is positioned on the upper surface of the support portion at a variable relative angle to the support portion. The base plate is provided with a pair of outriggers, which are attached to the upper and lower ends of the trolley, with the rail in between. Each of the outriggers is adjustable in length, extending toward the slope. A rotational drive step involves driving the rotational drive unit to position the support unit substantially horizontally, An adjustment step is to adjust the extension length of the outrigger to position the base plate horizontally, A drilling method comprising a drilling step of lowering the drilling machine along the leader to drill a hole in the slope.

8. The drilling section is provided with the leader and the drilling machine detachably attached to the base plate. A crane is provided at the drilling section. The drilling method according to claim 7, further comprising an assembly step of assembling the leader and the drilling machine to the base plate using the crane before the drilling step.

9. The drilling apparatus includes a drive unit that moves the trolley along the rail, The drilling method according to claim 7 or claim 8, wherein the trolley is driven by the aforementioned driving unit to perform continuous drilling along the rail.

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