JP2019173304A - Hillside drilling method - Google Patents

Abstract

To provide a hillside drilling work vehicle which effectively prevents damage and abrasion of components that constitute the drilling work vehicle, while being able to improve drilling efficiency, and to provide a hillside drilling facility and a hillside drilling method.SOLUTION: In a hillside drilling work vehicle 2 which comprises a work vehicle body 43 which can travel a hillside by itself, and a drilling device 70 which is supported by a tip portion of an arm 45 of the working vehicle body 43, the drilling device 70 comprises a down-the-hole hammer 74, a hydraulic motor 75 which is continuously provided to a base end portion of the down-the-hole hammer 74 and which drives and rotates the down-the-hole hammer 74, and a joint member 60 which supports the drilling device 70 rotatably by centering on two axes of a first axis 61 which is approximately parallel to an arm axis 45a to make the arm 45 rotate in the vertical direction and a second axis 64 which is approximately perpendicular to the first axis 61, is provided between the tip portion of the arm 45 and the drilling device 70.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an inclined ground drilling work vehicle, an inclined ground drilling equipment, and an inclined ground drilling method suitable for drilling a drilling hole in a vertical direction with respect to an inclined ground.

  As an inclined ground drilling facility that drills a drilling hole in a vertical direction with respect to an inclined ground, it is equipped with a self-propelled work vehicle body and a geological survey boring machine that is detachably provided at the tip of the arm of the work vehicle body. A drilling work vehicle and a lifting device that lifts and lowers the drilling work vehicle along the slope using a lifting wire stretched between the drilling work vehicle and the upper part of the slope have been proposed. (For example, refer to Patent Document 1.)

  In addition, as a drilling work vehicle that drills a drilling hole in a direction perpendicular to the flat ground, a drilling device that connects a hydraulic motor and a down-the-hole hammer in series vertically is connected to the tip of the crane arm of the work truck. The drilling hole is drilled in the ground by applying the impact force of the down-the-hole hammer and the rotational force of the hydraulic motor to the drill bit at the lower end of the down-the-hole hammer. A drilling work vehicle configured as described above has also been proposed (see, for example, Patent Document 2).

JP 2007-303231 A JP 2002-295159 A

  By the way, when drilling a drilling hole in a vertical direction with respect to an inclined ground, since the center of rotation of the drilling bit placed on the slope of the inclined ground is not stable at the start of drilling by the drilling bit, However, there is a problem that the excavation hole cannot be drilled with high accuracy in the vertical direction due to the displacement to the valley side.

  For this reason, normally, a bench cut is manually made on the slope where the drilling hole is drilled to form a horizontal seating surface, and then a drilling bit is placed on the seating surface to cut the drilling hole. Although it has a hole, the work of bench cutting was a heavy burden on the operator. In particular, when installing solar panels using mountain slopes effectively, it is necessary to construct a large number of drilling holes with high accuracy on the slopes in order to construct the support columns to support the solar panel on the slopes. In addition, since the work is performed on a steep slope, the burden on the worker is extremely increased.

  In addition, when drilling is performed with the drill bit misaligned, bending and torsional stress acts on the arm and boom of the drilling work vehicle, and the components that make up the drilling work vehicle There is a problem of damage or wear. In particular, in order to increase the drilling efficiency, when a part of the weight of the drilling work vehicle is applied to the drilling device via the arm and the drilling bit is pressed against the ground, bending stress and Since the torsional stress is further increased, the problem that parts constituting the drilling work vehicle are damaged or worn out easily occurs.

  An object of the present invention is to provide an inclined ground drilling work vehicle, an inclined ground drilling equipment, and an inclined ground drilling method capable of improving the drilling efficiency while effectively preventing breakage and wear of parts constituting the drilling work vehicle. It is to be.

The present invention includes the following inventions.
(1) An inclined ground drilling work vehicle comprising a work vehicle main body capable of self-propelling on an inclined ground and a drilling device supported by a tip of an arm of the work vehicle main body, wherein the drilling device is hollow A pipe-shaped body, a hammer piston provided in the body, a down-the-hole hammer having a drilling bit provided in a protruding shape at a lower end of the body, and a base end portion of the down-the-hole hammer, A rotation drive unit that rotationally drives the down-the-hole hammer, and a first axis that is substantially parallel to a vertical axis of rotation of the arm between the tip of the arm and the drilling device, and the first axis An inclined ground drilling work vehicle provided with a joint member that rotatably supports the drilling device about two axes of a second axis substantially orthogonal to the first axis. In addition, the first axis and the second axis can be arranged so as to intersect substantially orthogonally in the same plane, or can be arranged so as to intersect three-dimensionally substantially orthogonally at intervals. it can.

  In this inclined ground drilling work vehicle, the drilling device is attached to the tip of the arm of the work vehicle main body via a joint member, a first axis that is substantially parallel to the axis of rotation of the arm in the vertical direction, Since it is supported so as to be rotatable about two axes of the second axis that is substantially orthogonal, even if the drilling device is slightly inclined with respect to the vertical direction due to misalignment of the drill bit, The bending stress and torsional stress can be reduced from acting on the arm and boom, and the arm and boom should not be subjected to excessive bending stress or torsional stress even when the drilling device is repositioned in the vertical direction. Therefore, it is possible to effectively prevent breakage and wear of parts constituting the work vehicle main body. For this reason, the drilling hole is drilled while the part of the weight of the work vehicle main body is applied to the drilling device while effectively preventing damage and wear of the parts constituting the work vehicle main body. Can improve the drilling efficiency.

(2) The inclined ground drilling work vehicle according to (1), wherein the rotation driving unit is configured by a hydraulic motor that is rotated by pressure oil from a hydraulic pump mounted on the work vehicle. The rotational drive unit can be constituted by an electric motor, but is preferably constituted by a hydraulic motor for the following reason. That is, the inclined excavation work vehicle of the present invention is manufactured by partially changing the configuration of a work vehicle such as an existing hydraulic excavator. In the existing hydraulic excavator, a hydraulic cylinder for rotating the excavator is used. And a hydraulic pump. In the present invention, a drilling bit can be rotated by utilizing a hydraulic pump mounted on the hydraulic excavator by providing a hydraulic motor instead of the excavator and hydraulic cylinder of such an existing hydraulic excavator. The part is preferably constituted by a hydraulic pump.

(3) The inclined ground drilling work vehicle according to (1) or (2), wherein a display unit that displays that a guide hole having a certain depth has been drilled is provided on the outer periphery of the body. In this case, since the display portion can grasp that the guide hole of a certain depth has been drilled, for example, until the guide hole of a certain depth is drilled, only the striking force of the down-the-hole hammer is drilled. After the guide hole having a certain depth is drilled, the excavation hole can be drilled by the cooperation of the striking force of the down-the-hole hammer and the rotational force of the rotation drive unit. In other words, when drilling a drilling hole on an inclined ground, the lower end of the drilling bit may be displaced to the valley side at the start of drilling, so the guide hole is drilled only with the impact force of the down-the-hole hammer. Thus, the positional deviation of the drill bit can be effectively prevented. In addition, after drilling the guide hole to a certain depth, the drill bit will not be misaligned, so the drilling hole can be made efficient by cooperating with the impact force of the down-the-hole hammer and the rotational force of the rotary drive. Can be drilled. In the present invention, the simple configuration of providing a display portion on the outer peripheral portion of the body enables the display portion to switch the switching timing between the drilling operation using only the striking force and the drilling operation using the cooperation of the striking force and the rotational force. By visually observing, the operator can easily and accurately grasp, so that the drilling efficiency of the drilling hole can be increased as much as possible while effectively preventing the positional deviation of the drilling bit.

(4) The inclined ground drilling work vehicle according to (3), wherein the display unit displays that the guide hole having a depth of 100 mm to 500 mm is drilled. In this case, when a guide hole having a depth of 100 mm to 500 mm is drilled, it is possible to switch from the drilling operation using only the striking force to the drilling operation using the cooperation between the striking force and the rotational force. Further, it is possible to reliably prevent the positional deviation of the drill bit when the drilling is started by the cooperation of the striking force and the rotational force. Moreover, since the depth of the guide hole is set to 500 mm or less, a sufficient length of the drill hole to be drilled by the cooperation of the striking force and the rotational force is ensured, and the drilling efficiency of the drill hole is increased. Enough can be secured.

(5) The elevating and lowering work vehicle according to any one of (1) to (4), and an elevating device capable of elevating and lowering the inclined ground drilling work vehicle along a civil engineering work surface on the inclined land. The apparatus includes a first fixed point and a second fixed point that are spaced apart from each other on a sloped mountain side of the civil engineering work surface, a lifting winch installed on one side of the sloped ground, and the lifting winch A fixed pulley attached to a first fixed point on the side, a lifting wire that is fed from the lifting winch and hooked on the fixed pulley, and an end portion is fixed to the second fixing point, the fixed pulley, An inclined ground drilling facility, comprising: a movable pulley that is hooked on an intermediate portion of a lifting wire between two fixed points and supports the inclined ground drilling work vehicle.

  In this inclined ground drilling work equipment, the inclined ground drilling work vehicle can be driven in any direction while preventing the sliding on the slope of the inclined ground drilling work vehicle by supporting the inclined ground drilling work vehicle by the lifting device. By moving the inclined ground drilling work vehicle to a desired position, the necessary number of drilling holes can be easily drilled in the slope.

(6) Two vehicles constituting the first fixed point and the second fixed point are provided at a distance from each other on a road disposed at a position higher than the inclined ground drilling work vehicle. The inclined ground drilling facility according to (5), wherein the fixed pulley is fixed to the vehicle and the one end of the wire is fixed to the second vehicle. The first fixed point and the second fixed point can be composed of a tree that grows naturally on the slope or can be composed of an anchor material constructed on the slope. The civil engineering work surface for carrying out civil engineering work can be easily moved by a simple work of moving the vehicle.

(7) A part of the weight of the work vehicle main body capable of self-propelling on an inclined ground is transferred to the arm of the work vehicle main body via a joint member, and a first axis substantially parallel to the vertical rotation axis of the arm The drilling of the down-the-hole hammer of the drilling device while acting on the drilling device supported rotatably about the two axes of the second axis substantially orthogonal to the first axis through the arm and the joint member An inclined ground drilling method, wherein a drilling hole is drilled by applying at least one of a force and a rotational force by a rotational drive unit of the drilling device to a drilling bit.

  In this inclined ground drilling method, the drilling device is attached to the tip of the arm of the work vehicle body via a joint member, a first axis that is substantially parallel to the pivot axis in the vertical direction of the arm, and the first axis. Since it is supported so as to be rotatable about two orthogonal second axes, even if the drilling device is slightly inclined with respect to the vertical direction due to misalignment of the drill bit, bending stress And torsional stress on the arm and boom can be reduced, and even when the posture of the drilling device is reverted to the vertical direction, it is reestablished so that excessive bending stress or torsional stress is not applied to the arm or boom. Therefore, it is possible to effectively prevent breakage and wear of parts constituting the work vehicle body. For this reason, the drilling hole is drilled while the part of the weight of the work vehicle main body is applied to the drilling device while effectively preventing damage and wear of the parts constituting the work vehicle main body. Can improve the drilling efficiency of

(8) After a part of the weight of the work vehicle body is applied to the drilling device, the guide hole having a certain depth is drilled with respect to the slope of the inclined ground with only the striking force of the down-the-hole hammer, (7) The above-described (7), wherein a drilling hole having a desired depth is drilled by the striking force of the down-the-hole hammer and the rotational force of the rotary drive unit with the lower-end portion of the down-the-hole hammer fitted in the guide hole. Inclined drilling method. In this case, since the guide hole having a certain depth is drilled only by the impact force of the down-the-hole hammer, it is possible to effectively prevent the problem that the drill bit is displaced to the valley side when the guide hole starts drilling. . In addition, after drilling the guide hole of a certain depth, the drilling hole is drilled to the desired depth by the impact force of the down-the-hole hammer and the rotational force from the rotational drive unit. Since the drill bit rotates in the guide hole at the initial stage of rotation of the drill bit, it is possible to efficiently prevent the defect that the drill bit is displaced to the valley side, and it is efficient with the striking force and the rotational force. Drilling holes can be drilled.

(9) With the lower end of the down-the-hole hammer supported in a substantially vertical direction installed on the slope, the angle of the down-the-hole hammer is adjusted so that the inclination angle of the down-the-hole hammer approaches perpendicular to the slope. While a part of the weight is applied to the drilling device, only a striking force of the down-the-hole hammer is used to drill a guide hole having a fixed depth with respect to the slope, and then the down-the-hole hammer is angled in a substantially vertical direction. After the adjustment, with the lower end portion of the down-the-hole hammer fitted into the guide hole, the impact force of the down-the-hole hammer is applied to the drilling device while applying a part of the weight of the work vehicle body to the drilling device, The inclined ground drilling method according to (7), wherein a drilling hole having a desired depth is drilled in a substantially vertical direction with respect to the slope by the rotational force of the rotation driving unit. In this case, the guide hole of a fixed depth is drilled only with the impact force of the down-the-hole hammer while the angle of the down-the-hole hammer is adjusted so that it is perpendicular to the slope. At the start, it is possible to more effectively prevent the problem that the drill bit shifts to the valley side. After drilling the guide hole of a certain depth, the angle of the down-the-hole hammer is adjusted in a substantially vertical direction, and then the drilling hole is drilled to the desired depth with the impact force of the down-the-hole hammer and the rotational force from the rotary drive unit. However, since the drilling bit rotates in the guide hole at the initial stage of rotation of the drilling bit by the rotation drive unit, it is ensured that the drilling bit is misaligned to the valley side. Thus, the drilling hole can be efficiently drilled with the striking force and the rotational force.

(10) The inclined ground drilling method according to (8) or (9), wherein a depth of the guide hole from the slope is set to 100 mm to 500 mm. As described above, when the depth of the guide hole is set to 100 mm or more, it is possible to reliably prevent the displacement of the drill bit when the drill hole is drilled by the striking force and the rotational force. Moreover, since the depth of the guide hole is set to 500 mm or less, it is possible to sufficiently secure the length of the drilling hole drilled by the striking force and the rotational force and sufficiently ensure the drilling efficiency of the drilling hole. .

  According to the inclined ground drilling work vehicle, the inclined ground drilling equipment, and the inclined ground drilling method according to the present invention, the drilling device is provided at the tip of the arm of the work vehicle main body with the two axes substantially orthogonal to the vertical direction via the joint member. Therefore, even when the drilling device is slightly inclined with respect to the vertical direction due to misalignment of the drill bit, bending stress or torsional stress is As it can reduce the action on the boom, and even when the posture of the drilling device is re-established in the vertical direction, it can be re-established so that excessive bending stress or torsional stress is not applied to the arm or boom. It is possible to effectively prevent breakage and wear of the components constituting the. For this reason, the drilling hole is drilled while the part of the weight of the work vehicle main body is applied to the drilling device while effectively preventing damage and wear of the parts constituting the work vehicle main body. Can improve the drilling efficiency of

FIG. 1 is an explanatory diagram illustrating the overall configuration of the slope work facility. FIG. 2 is a side view of the inclined ground drilling work vehicle. FIG. 3 is a plan view of the movable pulley and the connecting means. FIG. 4A is a plan view of the moving pulley. FIG. 4B is a side view of the moving pulley. FIG. 5 is a side view of the connecting portion between the drilling device and the arm. FIG. 6 is a longitudinal sectional view of the vicinity of the lower end portion of the down-the-hole hammer. FIG. 7 is an explanatory diagram of a drilling step of the second embodiment. FIG. 8 is an explanatory view of a drilling process of the third embodiment, and is a side view of an inclined ground drilling work vehicle in a state where a drilling bit is installed. 9A to 9C are explanatory diagrams of a drilling step according to the third embodiment, and FIG. 9A is an explanatory diagram of a state in which a drill bit is installed. FIGS. 9A to 9C are explanatory diagrams of the hole drilling process of the third embodiment, and FIG. 9B is an explanatory diagram when the angle of inclination with respect to the inclined surface is adjusted so as to approach vertically. 9A to 9C are explanatory diagrams of the drilling process of the third embodiment, and FIG. 9C is an explanatory diagram when the angle of the down-the-hole hammer is adjusted in a substantially vertical direction after the construction of the guide holes.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the inclined ground drilling facility 1 includes a self-propelled inclined ground drilling work vehicle 2 and an elevating device 3 capable of raising and lowering the inclined ground drilling work vehicle 2 along the civil engineering work surface S of the inclined ground. I have.

  The lifting and lowering device 3 is installed on one side of the slope and the first fixed point 10 and the second fixed point 11 provided on the slope side of the mountain side of the civil engineering work surface S on which the drilling work is performed with a space between each other. The elevating winch 12, the fixed pulley 13 attached to the first fixing point 10 on the elevating winch 12 side, the unwinding winch 12, and being hooked on the fixed pulley 13, the end being fixed to the second fixing point 11. And a movable pulley 15 that is hooked on the middle portion of the lifting rope 14 between the fixed pulley 13 and the second fixed point 11 and supports the inclined ground drilling work vehicle 2.

  The first fixed point 10 and the second fixed point 11 are composed of two vehicles 16 and 17 installed on the road R on the mountain side of the civil engineering work surface S, and perform the necessary civil engineering work on the civil engineering work surface S. After that, the two vehicles 16 and 17 are moved so that the civil engineering work on the adjacent civil engineering work surface S can be performed. As the vehicles 16 and 17, heavy machinery such as a hydraulic excavator, a bulldozer, and a crane having a weight capable of receiving the tensile force from the lifting rope 14, or a vehicle such as a dump truck can be employed. Further, instead of the vehicles 16 and 17, one or more trees that grow naturally on the mountain side of the civil engineering work surface S can be used as a fixed point, or an anchor material can be installed on the mountain side of the civil engineering work surface S. Can be used as a fixed point.

  As shown in FIG. 1, the elevating winch 12 includes a drum 18 around which an elevating rope 14 is wound, and a driving means 19 that rotationally drives the drum 18 so that the drum 18 can be switched between a forward direction and a reverse direction. The rope 14 has a well-known configuration that allows the rope 14 to be unwound from the drum 18 and wound around the drum 18. The lifting rope 14 is preferably composed of a wire rope in order to ensure sufficient tensile strength, but a fiber rope or the like may be adopted as long as it can withstand the load acting on the lifting rope 14. it can.

  Since the moving pulley 15 and the fixed pulley 13 have the same configuration, only the moving pulley 15 will be described. Regarding the fixed pulley 13, the same members as those of the moving pulley 15 are denoted by the same reference numerals, and detailed description thereof will be omitted. . Here, the description will be made by defining the front-rear direction with the inclined ground drilling work vehicle 2 side of the movable pulley 15 as the front end side and the free end side as the rear end side.

  The movable pulley 15 will be described. As shown in FIGS. 2, 3, 4A, and 4B, a pulley body 20 is provided on which the lifting rope 14 is hung. A face plate 22 is provided. The upper surface plate 21 and the lower surface plate 22 are respectively constituted by a mounting plate 23 having a slightly larger plane size than the pulley body 20 and a reinforcing plate 24 elongated in the front-rear direction for reinforcing the upper plate 21 and the lower surface plate 22. They are connected by a spacer plate 25 provided between the end portions. A rotation shaft 26 is provided in a substantially central portion of the upper surface plate 21 and the lower surface plate 22, and the pulley body 20 is rotatably supported by the rotation shaft 26 between the upper surface plate 21 and the lower surface plate 22.

  The upper surface plate 21 is divided into a main body 21a and a front opening / closing body 21b. The opening / closing body 21b is a closure illustrated by a solid line in FIG. 4B around a pivot pin 27 provided at an end of the main body 21a. The lifting rope 14 can be attached to and detached from the pulley body 20 with the position and the open position shown in phantom lines in FIG. It is configured. In order to hold the opening / closing body 21b in the closed position, a connecting block 28 is fixed to the front end portion of the lower mounting plate 23, and a connecting pin 29 protruding upward is integrally provided on the connecting block 28. A pin hole 30 into which the connection pin 29 can be inserted is formed at the rear end of 21b, and the opening / closing body 21b is rotated to the closed position so that the connection pin 29 is attached to the pin hole 30. By attaching a pin member (not shown) to the tip, the opening / closing body 21b can be held in the closed position. A connecting tool 32 extending forward is attached to the connecting block 28, and the fixed pulley 13 and the movable pulley 15 are fixed to the fixed pulley 13 via a shackle 33 that is detachably attached to the rear end of the connecting tool 32. Connected to the connecting wire 34 connected to the point 10, the movable pulley 15 is connected to the connecting means 50 of the inclined ground drilling work vehicle 2. However, the moving pulley 15 and the fixed pulley 13 can employ different configurations, or can employ a known configuration other than those described above.

  As shown in FIG. 2, the inclined excavation work vehicle 2 includes a crawler-type lower traveling unit 40, an upper revolving unit 41 that is turnable on the lower traveling unit 40, and a work device 42 that is provided on the upper revolving unit 41. A work vehicle main body 43 capable of self-propelling on an inclined ground, connection means 50 for connecting the movable pulley 15 to the work vehicle main body 43 so as to be rotatable, and a tip of an arm 45 of the work device 42 And a drilling device 70 supported rotatably through a joint member 60. The work vehicle main body 43 can be constituted by, for example, a known hydraulic excavator in which an excavator and an excavator cylinder that rotates the excavator are omitted.

  The work device 42 includes a boom 44 that is rotatably supported on the work vehicle main body 43 via a boom shaft 44a, an arm 45 that is rotatably connected to a distal end portion of the boom 44 via an arm shaft 45a, A boom cylinder 44b for rotating the boom 44, a pair of arm cylinders 45b for rotating the arm 45, and a hydraulic pump (not shown) for supplying pressure oil to both the cylinders 44b and 45b It has.

  The connecting means 50 will be described. As shown in FIGS. 2 and 3, a disc-like support plate 51 is disposed substantially horizontally on the lower traveling portion 40 between the lower traveling portion 40 and the upper turning portion 41 of the work vehicle main body 43. A ring-shaped member 52 is provided on the outer periphery of the support plate 51 over the entire circumference, and the ring-shaped member 52 is formed with guide portions 52 a that protrude to the upper and lower sides of the support plate 51. A movable member 53 having a U-shape in a side view is provided on the outer peripheral portion of the support plate 51 in an outer fitting shape, and the movable member 53 has a plurality of abutments on the inner peripheral surface and the outer peripheral surface of the guide portion 52a of the ring-shaped member 52. A roller 54 and a plurality of rollers 55 that contact the upper and lower surfaces of the ring-shaped member 52 are provided, and the movable member 53 can be rotated only in the direction along the ring-shaped member 52 by the plurality of rollers 54 and 55. It is guided to. A pair of left and right brackets 56 are fixed vertically on the rear surface of the movable member 53, and a connecting member 58 is rotatably supported on both brackets 56 around a substantially horizontal shaft member 57. A pair of upper and lower connecting plates 58a is provided substantially horizontally, a connecting shaft 59 is provided on the upper and lower connecting plates 58a in a substantially vertical direction, and the movable pulley 15 is latched to the connecting shaft 59 by a shackle 33, The movable member 53 and the ring-shaped member 52 are attached to the work vehicle 2 so as to be rotatable. Further, the movable pulley 15 is supported by the shaft member 57 so as to be rotatable in the vertical direction, and is also supported by the connection shaft 59 so as to be rotatable in the horizontal direction. By absorbing the swing of the inclined ground drilling work vehicle 2 during civil engineering work, the movable pulley 15 and the lifting rope 14 can be always maintained in an appropriate positional relationship.

  As shown in FIGS. 2 and 5, the joint member 60 includes an upper component member 62 that is rotatably connected to the distal end portion of the arm 45 via a first shaft 61, and a hydraulic motor 75 of the hole drilling device 70. A lower constituent member 63 fixed to the upper end portion and a second shaft 64 that rotatably couples the constituent members 62 and 63 are provided.

  More specifically, the upper component member 62 is provided with a pair of upper pivot portions 62a disposed on both sides of the distal end portion 45c of the arm 45, and a first shaft that passes through the distal end portion 45c and the upper pivot portions 62a. 61 is provided substantially parallel to the arm shaft 45 a, and the upper component member 62 is pivotally supported by the tip end portion of the arm 45 via the first shaft 61. The hydraulic motor 75 of the drilling device 70 is provided with a substantially U-shaped lower component member 63 having a pair of support portions 63 a, and a lower pivot of the upper component member 62 is provided between the support portions 63 a of the lower component member 63. The support member 62b is disposed, and the lower component member 63 has a second shaft 64 that is rotatably inserted through the lower pivot support unit 62b so as to be substantially orthogonal to the first shaft 61, and the lower component member 63 is centered on the second shaft 64. The upper structural member 62 is pivotally supported so as to be rotatable. A universal joint may be provided instead of the joint member 60. For example, the upper component member 62 is omitted, the tip of the arm is bifurcated, and a cross-shaped shaft member is provided instead of the first shaft 61 and the second shaft 64, and one of the shaft members is provided. It is also possible to rotatably connect the shaft portion to the tip end portion of the bifurcated arm 45 and to pivotally connect the other shaft portion to both support portions 63a of the lower component 63.

  As shown in FIGS. 2 and 5 to 7, the hole drilling device 70 includes a hollow pipe-shaped body 71, a hammer piston 72 built in the body 71, and a hole drilled in a projecting manner at the lower end of the body 71. A down-the-hole hammer 74 having a well-known configuration having a bit 73, a hydraulic motor 75 that is connected to the upper end portion of the down-the-hole hammer 74, and serves as a rotational drive unit that rotates the down-the-hole hammer 74, and an output shaft 75 a of the hydraulic motor 75. And a hollow connecting member 76 that connects the body 71 of the down-the-hole hammer 74 so as not to be relatively rotatable, and a cylindrical swivel 77 that is rotatably mounted on the upper portion of the connecting member 76.

  The swivel 77 is connected to a pressurized air supply pipe 77 a connected to a pressurized air supply source (not shown). The pressurized air supplied to the swivel 77 is supplied to the down-the-hole hammer 74 through the connecting member 76. It is configured as follows.

  A pipe 46 connected to the hydraulic pump of the work device 42 is connected to the hydraulic motor 75 so that pressure oil can be supplied through the pipe 46. In the present embodiment, the hydraulic oil is supplied to the hydraulic motor 75 using the piping 46 and the hydraulic circuit to the excavator cylinder. However, it is also possible to provide an electric motor instead of the hydraulic motor 75.

  A display portion 78 is formed on the outer peripheral portion of the body 71 of the down-the-hole hammer 74 to display that the guide hole DHa having a certain depth is drilled with respect to the slope. As the display unit 78, the operator visually confirms that the guide hole DHa having a depth H in the range of 100 mm to 500 mm is drilled from the lower end of the edge of the guide hole DHa to the bottom surface of the guide hole DHa. Any configuration can be adopted as long as it can be grasped in (4). For example, a single annular display portion 78 having an upper edge at a position spaced 100 mm to 500 mm from the lower end of the drill bit 73 on the outer peripheral portion of the body 71, or the lower end of the drill bit 73 Two annular display parts having upper edges at positions of 100 mm and 500 mm from the part are provided at an interval in the vertical direction, and the distance from the lower end part of the drill bit 73 is graduated on the outer peripheral part of the body 71 It can be displayed in numbers. The display unit 78 can be formed by painting, formed on the body 71 by cutting or stamping, or can be formed by overlaying a metal material on the body 71 by thermal spraying or the like. However, the display unit 78 can be omitted.

Next, a civil engineering work method using the inclined ground drilling facility 1 will be described.
First, in the installation process, as shown in FIG. 1, two vehicles 16 and 17 are installed at a distance from each other on a slope on the mountain side of the civil engineering work surface S on which the drilling operation is performed. The fixed pulley 13 is attached to the first fixed point 10, and the lifting winch 12 is installed on the side of the civil engineering work surface S on the side where the fixed pulley 13 is provided. Next, the raising / lowering rope 14 drawn out from the raising / lowering winch 12 is wound around the fixed pulley 13 and fixed to the first fixed point 11 of the second vehicle 17, and the vertical movement between the fixed pulley 13 and the second fixed point 11 is also performed. The intermediate portion of the rope 14 is wound around the movable pulley 15 of the inclined ground drilling work vehicle 2 to install the inclined ground drilling equipment 1 on the civil engineering work surface S.

  Next, in the movement process, the lifting / lowering rope 14 is loosened by remotely operating the lifting / lowering winch 12 and the inclined ground drilling / working vehicle 2 in a safe place where the inclined ground drilling work vehicle 2 can be visually observed and has a good footing. The inclined ground drilling work vehicle 2 is moved to the upper side of the drilling work position while operating the elevating winch 12 so as not to move. At this time, the civil engineering work surface S of the inclined ground drilling work vehicle 2 is moved in the vertical direction by traveling by the crawler type lower traveling portion 40 of the inclined ground drilling work vehicle 2 and the lifting rope 14 by the lifting winch 12. The movement in the left-right direction is performed by winding up or feeding out, and by applying a constant tension to the lifting rope 14 to prevent the overturning of the inclined ground drilling work vehicle 2, similarly to the movement on a flat ground, The lower traveling unit 40 turns the inclined ground drilling work vehicle 2 in the traveling direction and travels.

  Next, in the positioning step, the boom 44 and the arm 45 of the inclined ground drilling work vehicle 2 are remotely operated, and the lower end of the drilling bid of the down-the-hole hammer 74 is positioned at the drilling work position as shown in FIG. At the same time, the drilling device 70 is placed at the drilling work position. In this alignment operation, the lower end portion of the drill bit 73 is approximately aligned by the boom 44 and the arm 45, and then is accurately aligned by the operator's manual operation.

  Next, in the drilling step, the boom 44 and the arm 45 of the inclined ground drilling work vehicle 2 are remotely operated to adjust the attitude of the drilling device 70 so that the drilling device 70 is in a substantially vertical direction. The drilling device 70 drills a substantially vertical excavation hole DH through the boom 44, the arm 45, and the joint member 60 while a part of the weight of the work vehicle main body 43 is applied to the drilling device 70. At this time, the hole drilling device 70 has a first shaft 61 that is substantially parallel to the rotation axis of the arm 45 and a first shaft 61 that are substantially parallel to the tip of the arm 45 of the work vehicle main body 43 via the joint member 60. This is a case where the drilling device 70 is slightly inclined with respect to the vertical direction due to the positional deviation of the drill bit 73 and the like because it is supported so as to be rotatable about the two axes of the orthogonal second shaft 64. However, the bending stress and the torsional stress can be reduced from acting on the arm 45 and the boom 44, and even when the posture of the drilling device 70 is reset in the vertical direction, an excessive bending stress or twisting force is applied to the arm 45 or the boom 44. Since it can be rebuilt so that no torsional stress is applied, it is possible to effectively prevent breakage and wear of parts constituting the work vehicle main body 43. For this reason, the drilling hole DH is drilled while causing a part of the weight of the work vehicle main body 43 to act on the drilling device 70 while effectively preventing damage and wear of the parts constituting the work vehicle main body 43. Thus, the drilling efficiency of the excavation hole DH can be improved.

  In this way, after drilling the excavation hole DH of a certain depth, the inclined ground excavation work vehicle 2 is operated far and the drilling device 70 is pulled upward from the excavation hole DH, and then the next excavation hole DH is excavated. Therefore, in the moving process, the lifting winch 12 and the inclined ground drilling work vehicle 2 are remotely operated, the inclined ground drilling work vehicle 2 is moved to the upper side of the drilling work position, and the next excavation hole DH is drilled. By repeating the operation, a plurality of excavation holes DH are sequentially formed on the civil engineering work slope. In the case of constructing a solar cell panel, cement milk is filled in the excavation hole DH in a state where the vertical frame is set in the vertical direction with respect to the excavation hole DH, and then the vertical frame is installed. A frame-like frame is fixed over the upper ends of a plurality of vertical frames, a solar cell panel is assembled on the upper surface of the frame-like frame, and the solar cell panel is constructed on a slope.

  Next, another embodiment in which the configuration of the drilling process in the above embodiment is partially changed will be described.

(1) In the drilling step of the above embodiment (first embodiment), the striking force by the down-the-hole hammer 74 and the rotational force by the hydraulic motor 75 are applied to the drill bit 73 from the initial stage of drilling by the drill bit 73. In this case, the slope is excavated, but when a rotational force is applied to the drill bit 73 from the beginning of the drilling, the drill bit 73 is easily displaced to the valley side. Therefore, in the drilling process of the second embodiment, in order to prevent this, at the initial stage of drilling, the posture of the drilling device 70 is adjusted in a substantially vertical direction, and a part of the weight of the work vehicle main body 43 is cut. While acting on the hole device 70, as indicated by the phantom line in FIG. 7, the guide hole DHa having a certain depth is drilled with respect to the slope of the inclined ground with only the striking force of the down-the-hole hammer 74. While the lower end portion is fitted in the guide hole DHa, the down-the-hole hammer is adjusted while the posture of the drilling device 70 is adjusted in a substantially vertical direction and a part of the weight of the work vehicle main body 43 is applied to the drilling device 70. The drilling hole DH having a desired depth can be drilled with the striking force of 74 and the rotational force of the rotational drive unit. More specifically, an operator who operates the drilling device 70 is guided to a certain depth only by the striking force of the down-the-hole hammer 74 while observing the display portion 78 provided on the outer peripheral portion of the body 71 of the down-the-hole hammer 74. When the hole DHa is drilled, for example, when the display part 78 becomes invisible, the drilling hole DH is drilled continuously with the guide hole DHa by the striking force by the down-the-hole hammer 74 and the rotational force by the hydraulic pump.

  The depth H of the guide hole DHa can be set to a depth of 100 mm to 500 mm, for example. Thus, since the depth of the guide hole DHa is set to 100 mm or more, it is possible to reliably prevent displacement of the drill bit 73 when the drilling is started by the cooperation of the striking force and the rotational force. . Further, since the depth of the guide hole DHa is set to 500 mm or less, a sufficient length of the excavation hole DH to be drilled by the cooperation of the striking force and the rotational force is secured, and the excavation of the excavation hole DH is ensured. Sufficient hole efficiency can be secured. As described above, the display unit 78 can be of any configuration as long as the operator can grasp that the guide hole DHa having a certain depth has been drilled.

  When the guide hole DHa having a certain depth is drilled only by the striking force of the down-the-hole hammer 74 as in this drilling process, the drill bit 73 is displaced to the valley side at the start of drilling of the guide hole DHa. Can be effectively prevented. In addition, after drilling the guide hole DHa having a certain depth, the drilling hole DH is drilled to a desired depth by the striking force of the down-the-hole hammer 74 and the rotational force from the rotation drive unit. In the initial rotation of the drilling bit 73 by the driving unit, the drilling bit 73 rotates in the guide hole DHa, so that it is possible to reliably prevent a problem that the drilling bit 73 is displaced to the valley side while striking. The excavation hole DH can be drilled efficiently with force and rotational force.

(2) In the drilling step of the first and second embodiments, since the drilling of the drilling hole DH is started with the down-the-hole hammer 74 supported in the vertical direction V, the drilling bit 73 is formed at the start of drilling. The position may be shifted to the valley side. Therefore, in the drilling process of the third embodiment, in order to further prevent such misalignment, in the positioning process, as shown in FIGS. 8 and 9A, the lower end portion of the drilling bid is positioned at the drilling work position. , The arm 45 and the boom 44 are operated as shown in phantom lines in FIG. 8, with the lower end portion of the down-the-hole hammer 74 in a substantially vertical posture as the center, 9A, the down-the-hole hammer 74 is rotated in the direction of arrow A in FIG. 9A so that the inclination angle θ with respect to the inclined surface of the down-the-hole hammer 74 approaches 90 °. adjust. Next, as shown by the phantom line in FIG. 9B, the down-the-hole hammer 74 is applied to the drilling device 70 while acting a part of the weight of the work vehicle main body 43 along the inclination direction L of the down-the-hole hammer 74. The guide hole DHa having a certain depth is drilled with respect to the slope with only the striking force, and then the down-the-hole hammer 74 is returned to the substantially vertical direction V by the angle θ1, as shown in FIG. While the lower end portion of the work vehicle body 43 is fitted in the guide hole DHa, a part of the weight of the work vehicle main body 43 is applied to the drilling device 70 in the substantially vertical direction V, and the striking force of the down-the-hole hammer 74; The excavation hole DH having a desired depth can be drilled in a substantially vertical direction with respect to the slope by the rotational force of the rotation drive unit.

  The inclination angle θ is preferably as close as possible to the slope as much as possible, but is perpendicular to the slope within a range of ± 20 °, preferably within a range of ± 15 °, and more preferably within a range of ± 10 °. If it is inside, the position shift of the drill bit 73 can be effectively prevented.

  In this way, with the angle adjusted so that the down-the-hole hammer 74 approaches the vertical direction P with respect to the slope, the guide hole having a fixed depth is obtained only by the striking force of the down-the-hole hammer 74 along the inclination direction L of the down-the-hole hammer 74. When DHa is drilled, it is possible to more effectively prevent the problem that the drill bit 73 is displaced to the valley side when starting drilling of the guide hole DHa. Further, after drilling the guide hole DHa having a certain depth, the angle of the down-the-hole hammer 74 is adjusted in the substantially vertical direction V, and then the desired impact force of the down-the-hole hammer 74 and the rotational force from the rotation drive unit are obtained. The drilling hole DH is drilled to the depth. At the initial rotation of the drilling bit 73 by the rotation driving unit, the drilling bit 73 rotates in the guide hole DHa. The excavation hole DH can be efficiently drilled with the striking force and the rotational force while reliably preventing the problem of displacement to the side.

  The embodiment of the present invention has been described above. However, the present invention is not limited to the above-described embodiment, and it goes without saying that the configuration can be changed without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Inclined ground drilling equipment 2 Inclined ground drilling work vehicle 3 Lifting device 10 1st fixed point 11 2nd fixed point 12 Lifting winch 13 Fixed pulley 14 Lifting rope 15 Moving pulley 16 Vehicle 18 Drum 19 Driving means 20 Pulley body 21 Above Face plate 21a Main body 21b Opening and closing body 22 Lower surface plate 23 Mounting plate 24 Reinforcement plate 25 Spacer plate 26 Rotating shaft 27 Pivoting pin 28 Connecting block 29 Connecting pin 30 Pin hole 32 Connecting tool 33 Shackle 40 Lower traveling portion 41 Upper turning portion 42 Work Device 43 Work vehicle main body 44 Boom 44a Boom shaft 44b Boom cylinder 45 Arm 45a Arm shaft 45b Arm cylinder 45c End portion 46 Piping 50 Connection means 51 Support plate 52 Ring-shaped member 52a Guide portion 53 Movable member 54 Roller 55 Roller 56 Bracket 57 Shaft Member 58 Connection member 58a Connection plate 59 Connection shaft 0 joint member 61 first shaft 62 upper component member 62a upper pivot portion 62b lower pivot portion 63 lower component member 63a support portion 64 second shaft 70 drilling device 71 body 72 hammer piston 73 drill bit 74 down-the-hole hammer 75 hydraulic motor 75a Output shaft 76 Connecting member 77 Swivel 77a Pressurized air supply pipe 78 Display section DH Excavation hole DHa Guide hole L Inclination direction P Vertical direction R Road S Civil engineering work surface V Vertical direction θ Inclination angle θ1 Angle

Claims (10)

An inclined ground drilling work vehicle comprising a work vehicle main body capable of self-propelling on an inclined land, and a drilling device supported by a tip of an arm of the work vehicle main body,
The drilling device is
A down-the-hole hammer having a hollow pipe-shaped body, a hammer piston built in the body, and a drilling bit provided in a protruding shape at the lower end of the body;
A rotation drive unit connected to the base end of the down-the-hole hammer to rotate-drive the down-the-hole hammer;
With
Between the tip of the arm and the drilling device, centering on two axes, a first axis that is substantially parallel to the vertical axis of rotation of the arm and a second axis that is substantially orthogonal to the first axis, Provided a joint member that rotatably supports the drilling device,
An inclined ground drilling vehicle characterized by that.   The inclined ground drilling work vehicle according to claim 1, wherein the rotation drive unit is configured by a hydraulic motor that is rotated by pressure oil from a hydraulic pump mounted on the work vehicle.   The inclined ground drilling work vehicle according to claim 1 or 2, wherein a display portion for displaying that a guide hole having a certain depth is drilled is provided on an outer peripheral portion of the body.   The inclined ground drilling work vehicle according to claim 3, wherein the display unit displays that the guide hole having a depth of 100 mm to 500 mm is drilled. An inclined ground drilling work vehicle according to any one of claims 1 to 4, and an elevating device capable of raising and lowering the inclined ground drilling work vehicle along a civil engineering work surface on an inclined ground,
The lifting device is
A first fixed point and a second fixed point that are spaced apart from each other on an inclined land on the mountain side of the civil engineering work surface;
A lifting winch installed on one side of the slope;
A fixed pulley attached to a first fixed point on the lifting winch side;
An elevating wire that is drawn out from the elevating winch and hooked on the fixed pulley, the end of which is fixed to the second fixing point;
A movable pulley that is hooked on the middle part of the lifting wire between the fixed pulley and the second fixed point to support the inclined ground drilling work vehicle;
With
An inclined ground drilling facility characterized by that.   Two vehicles constituting the first fixed point and the second fixed point are spaced apart from each other on a road disposed at a position higher than the inclined ground drilling work vehicle. The inclined ground drilling facility according to claim 5, wherein the fixed pulley is fixed and one end of the wire is fixed to the second vehicle.   A part of the weight of the work vehicle main body capable of traveling on an inclined ground is transferred to the arm of the work vehicle main body via a joint member, through a first shaft substantially parallel to the vertical axis of rotation of the arm, A striking force of the down-the-hole hammer of the drilling device while acting on the drilling device supported rotatably about two axes of the second axis substantially perpendicular to the first axis, via the arm and the joint member, An inclined ground drilling method, wherein a drilling hole is drilled by causing at least one of the rotational force of the rotational drive unit of the drilling device to act on the drilling bit.   While a part of the weight of the work vehicle body is applied to the drilling device, a guide hole having a certain depth is drilled with respect to the slope of the inclined ground with only the striking force of the down-the-hole hammer. The inclined ground drilling hole according to claim 7, wherein a drilling hole having a desired depth is drilled by a striking force of the down-the-hole hammer and a rotational force by the rotation driving unit in a state where a lower end portion is fitted in the guide hole. Method.   With the lower end of the down-the-hole hammer supported in a substantially vertical direction installed on a slope, the angle of the down-the-hole hammer is adjusted so that the inclination angle of the down-the-hole hammer approaches the slope perpendicularly. After a guide hole having a fixed depth is drilled with respect to the slope with only the striking force of the down-the-hole hammer, and then the angle of the down-the-hole hammer is adjusted in a substantially vertical direction while operating a portion on the drilling device. In the state where the lower end portion of the down-the-hole hammer is fitted into the guide hole, the striking force of the down-the-hole hammer and the rotation drive portion are applied while a part of the weight of the work vehicle body is applied to the drilling device. The inclined ground drilling method according to claim 7, wherein a drilling hole having a desired depth is drilled in a substantially vertical direction with respect to the slope by the rotational force generated by.   The inclined ground drilling method according to claim 8 or 9, wherein a depth of the guide hole is set to 100 mm to 500 mm.

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