Rod supply stand

Abstract

The present invention provides a rod supply stand that can automatically and separately store and supply double-tube tools, retrieve and store inner rods, and retrieve and store outer casings for machines with a rod changing mechanism. [Solution] A rod storage frame body 2 having a frame structure is installed inside a rectangular frame structure consisting of a pair of rectangular frame bodies 9 and a pair of cylinder fixing frame bodies 4. A lifting cylinder 3 is attached to the cylinder fixing frame body 4, and a pulley 3a is attached to the end of the cylinder rod. A chain 3b is wrapped around the pulley 3a, with one end connected to the rod storage frame body 2 and the other end connected to the cylinder fixing frame body 4. Bracket transport devices 6 for moving rod brackets 5 are attached to the upper part of each rectangular frame body 9. Furthermore, a clamp rotation device 8 for rotating a guided clamp device 7 is attached to one of the rectangular frame bodies 9.

Description

Technical Field

[0001] The present invention relates to a rod supply stand, and more specifically, to a rod supply stand capable of automatically and separately storing and supplying double-pipe tools (outer casing and inner rod), recovering and storing the inner rod, and recovering and storing the outer casing for a machine having a rod change mechanism.

Background Art

[0002] Conventionally, as a method of drilling a hole in the ground, the rotary percussion method, which drills while applying rotational force and striking force, has been widely known. This rotary percussion method crushes hard rock by striking force, so it has the advantage that drilling can be performed not only in sand layers and boulder layers, but also in bedrock and the like. Therefore, rotary percussion is widely used as a drilling means in slope disaster prevention construction techniques such as ground anchor work, which is one of landslide prevention works, or horizontal boring work, which is one of landslide suppression works, or as a drilling means in chemical fluid injection methods, which is one of the face stability maintenance methods in tunnel construction methods.

[0003] To briefly explain the drilling process by rotary percussion, first, a double-pipe tools (also referred to as "double-pipe rod") consisting of an outer casing and an inner rod is connected to a rotary drive device (or swivel head). Then, the ground is drilled while applying striking force to the double-pipe tools by the striking device and applying rotational force by the rotary drive device. Drilling is performed to a predetermined depth while supplementing the double-pipe tools. When the double-pipe tools reach the target depth, the drilling is completed.

[0004] After the drilling is completed, all the inner rods are first pulled out of the hole. Then all the outer casings are pulled out of the hole to complete the construction.

[0005] Incidentally, a drilling apparatus is known that includes a rod changer for adjusting the axis of the double-tube tool and connecting it to a rotary drive device, and for recovering used inner rods and outer casings from the rotary drive device, and a rod stocker for transferring the double-tube tool to the rod changer and for receiving used inner rods and outer casings from the rod changer (see, for example, Patent Document 1).

[0006] In the drilling apparatus described above, after the operator places the double-tube tool on the rod stocker and presses the ON button, the transfer of the double-tube tool to the rod changer, adjustment of the axis of the double-tube tool in the rod changer, and connection of the double-tube tool to the rotary drive device are performed automatically. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2022-150951 [Overview of the Initiative] [Problems that the invention aims to solve]

[0008] In the drilling apparatus described in Patent Document 1 above, the process of setting the double-tube tools has previously involved transporting and installing each set individually using manual labor and cranes. On the other hand, in double-tube drilling, the double-tube tools must be transported and installed continuously during drilling, and similarly, the inner rod and outer casing must be recovered and transported during the pipe removal process.

[0009] The transportation and installation of double-tube tools are primarily carried out using manual labor and cranes. Because double-tube tools are heavy and long, the process requires considerable effort and carries the risk of entanglement due to falling objects.

[0010] In double-pipe drilling, the drilling operation is performed by supplying double-pipe tools, and the pipe removal operation is basically carried out in the order of inner rod, then outer casing. Until now, the inner rod was collected and transported during the pipe removal operation, and then the outer casing was collected and transported. Because the drilling operation and pipe removal operation have different processes, a great deal of effort is required to secure workspace and move the machinery.

[0011] To shorten installation time, for example, 2.5m double-walled pipe tools may be used. Due to their long overall length, they are prone to losing balance during transport. The outer diameter must be suitable for tools ranging from φ133 to φ57.

[0012] Traditionally, after retrieving the inner rod, the outer casing needs to be inserted on the outside of the inner rod, resulting in a predominantly vertical orientation. However, this vertical orientation often requires lifting the unit to a height of approximately 2.7 meters to accommodate the inner rod, limiting the available workspace.

[0013] Furthermore, with the Ministry of Land, Infrastructure, Transport and Tourism promoting the development and dissemination of construction technologies such as unmanned and labor-saving construction, there is a strong demand for automated operation in the supply of rods for drilling equipment.

[0014] Therefore, the present invention has been made in view of the problems of the prior art described above, and its purpose is to provide a rod supply stand that can separately and automatically store and supply double-tube tools (outer casing and inner rod), retrieve and store the inner rod, and retrieve and store the outer casing for a machine having a rod change mechanism. [Means for solving the problem]

[0015] To achieve the above objective, the rod supply stand according to the present invention is a rod supply stand (100) that can automatically supply a double-tube drilling tool (1) consisting of an inner tube (1a) and an outer tube (1b) to a machine having a rod change mechanism, and can also automatically collect and store the inner tube (1a) and the outer tube (1b) individually, wherein the rod supply stand (100) has a bathtub-shaped frame structure and is configured to be able to move up and down, and the front and rear in the longitudinal direction of the rod storage frame (2) The rod storage frame (2) is characterized by comprising: rectangular frame bodies (9, 9) arranged on the outside; side frame bodies (4, 4) arranged on the left and right and outside with respect to the longitudinal direction of the rod storage frame body (2); a rod bracket (5) that bridges between the rectangular frame bodies (9, 9) and is configured to be movable in a direction intersecting the longitudinal direction; and rod clamping devices (7, 7) that are configured to be clampable and rotatable for the double-tube tool (1), the inner tube (1a), and the outer tube (1b), respectively.

[0016] In the above configuration, it is possible to install an actuator (3) on the side frame (4) to raise and lower the rod storage frame (2). In addition, it is possible to install an actuator (6) on the rectangular frame (9, 9) to move the rod bracket (5), and an actuator (8) to rotate the rod clamp device (7, 7).

[0017] This allows the control device to automatically and separately perform the storage and supply of double-tube tools (1), the retrieval and storage of the inner tube (1a), and the retrieval and storage of the outer tube (1b) for a machine with a rod change mechanism. This is achieved by the control device repeatedly performing the following processes: moving the rod storage frame (2), which has multiple stacked rod groups, by a predetermined distance to a height position where the rod bracket (5) can engage; moving the rod bracket (5) by a predetermined distance to a position where the rod clamping device (7, 7) can clamp; rotating the rod clamping device (7, 7) with the clamped rods (1, 1a, 1b) toward the machine (drilling device); opening the rod clamping device (7, 7); and rotating the empty rod clamping device (7, 7) back to its original position.

[0018] A second feature of the rod supply stand according to the present invention is that the rod clamping device (7, 7) is equipped with a guide mechanism (7b, 7b) that can push forward the double-tube tool (1), the inner tube (1a), and the outer tube (1b) when the device is open.

[0019] In the above configuration, the guide mechanism (7b, 7b) enables the rod clamping device (7, 7) to reliably transfer the double-tube tool (1) to the drilling device side and to accommodate the inner tube (1a) and outer tube (1b) into the rod storage frame (2). [Effects of the Invention]

[0020] According to the rod supply stand of the present invention, it is possible to automatically and separately store and supply double-tube tools (outer casing and inner rod), retrieve and store the inner rod, and retrieve and store the outer casing for a machine having a rod changing mechanism. [Brief explanation of the drawing]

[0021] [Figure 1] This is an explanatory diagram showing a rod supply frame according to one embodiment of the present invention. [Figure 2]This is an explanatory diagram showing the clamping mechanism of the guided clamp device. [Figure 3] This is an explanatory diagram showing the guide mechanism of the guided clamp device. [Figure 4] This is an explanatory diagram showing the step of moving the double-pipe tools to a transportable position by the rod bracket, among the steps of supplying the double-pipe tools to the drilling device. [Figure 5] This is an explanatory diagram showing the step of pivoting the guided clamp device to a clampable position, among the steps of supplying the double-pipe tools to the drilling device. [Figure 6] This is an explanatory diagram showing the step of opening the guided clamp device, among the steps of supplying the double-pipe tools to the drilling device. [Figure 7] This is an explanatory diagram showing the step of transporting the double-pipe tools to the guided clamp device by the rod bracket, among the steps of supplying the double-pipe tools to the drilling device. [Figure 8] This is an explanatory diagram showing the double-pipe tools transfer step of transferring the clamped double-pipe tools to the drilling device, among the steps of supplying the double-pipe tools to the drilling device. [Figure 9] This is an explanatory diagram showing the step of receiving the inner rod from the drilling device, among the inner rod extraction steps. [Figure 10] This is an explanatory diagram showing the pivoting step of the guided clamp device that clamps the inner rod, among the inner rod extraction steps. [Figure 11] This is an explanatory diagram showing the inner rod storage step in which the guided clamp device 7 accommodates the inner rod into the rod storage frame body, among the inner rod extraction steps. [Figure 12] This is an explanatory diagram showing the step of receiving the outer casing from the drilling device, among the outer casing extraction steps. [Figure 13] This is an explanatory diagram showing the pivoting step of the guided clamp device 7 that clamps the outer casing, among the outer casing extraction steps. [Figure 14]This is an explanatory diagram showing the outer casing storage process, which is part of the outer casing removal process, where the outer casing is stored on the rod storage frame. [Figure 15] This is an explanatory diagram showing the process of lowering the rod storage frame after the outer casing has been recovered, which is part of the outer casing removal process. [Figure 16] This is an explanatory diagram showing the first linear encoder for measuring the amount of movement of the rod storage frame and the second linear encoder for measuring the amount of movement of the rod bracket. [Modes for carrying out the invention]

[0022] Embodiments of the present invention will be described in detail below with reference to the attached drawings.

[0023] Figure 1 is an explanatory diagram showing a rod supply stand 100 according to one embodiment of the present invention. For the sake of explanation, multiple double-tube tools 1 are stacked on the rod supply stand 100.

[0024] The rod supply stand 100 comprises a rod storage frame body 2 for storing the inner rod 1a in the double-tube tool 1, a lifting cylinder 3 for raising and lowering the rod storage frame body 2 in the vertical direction, a cylinder fixing frame body 4 for fixing the lifting cylinder 3, a rod bracket 5 that contacts the rod, a bracket transport device 6 for moving the rod bracket 5 in the horizontal direction (direction perpendicular to the longitudinal direction), a guided clamp device 7 for clamping the rod and passing it to a rod change mechanism (not shown) or receiving the rod from a rod change mechanism, a clamp swivel device 8 for swiveling the guided clamp device 7, a rectangular frame body 9 for fixing the bracket transport device 6 and the clamp swivel device 8, a vertical rod stopper 10 for restricting the movement of the rod in the vertical direction (longitudinal direction), a horizontal rod stopper 11 for restricting the movement of the rod in the horizontal and height directions, and a jack cylinder 12 for changing the height from the ground. Furthermore, unless there is a need to distinguish between the double-tube tool 1, inner rod 1a, and outer casing 1b, they will simply be collectively referred to as "rod." The following provides a further explanation of each component.

[0025] The double-tube tool 1 is constructed by inserting an inner rod 1a into the internal space of an outer casing 1b. When the rod supply stand 100 supplies the rod to the rod change mechanism (drilling device side), the rod is in the form of a double tube, as in the double-tube tool 1. On the other hand, when the rod supply stand 100 retrieves the rod from the rod change mechanism (drilling device side), the rod is in the form of a single tube, with the inner rod 1a being retrieved sequentially first, followed by the outer rod 1b. The supply process of the double-tube tool 1, the removal process of the inner rod 1a, and the removal process of the outer casing 1b will be described later with reference to Figures 4 to 15.

[0026] The rod storage frame 2 has a rectangular parallelepiped (bathtub-shaped) skeleton frame structure with an open top. The rod storage frame 2 is configured to be able to move up and down by a lifting cylinder 3. Therefore, after the control device (not shown) has supplied all of one layer (six in this embodiment) of the double-tube tools 1 to the drilling device, it moves the rod storage frame 2 upward by a predetermined distance (the outer diameter of the double-tube tools 1) using the lifting cylinder 3 in order to supply the next layer of double-tube tools 1.

[0027] Conversely, during the outer casing recovery process, after the control device has laid out one layer (6 rods) of outer casing 1b on the rod storage frame 2, it moves the rod storage frame 2 downward by a predetermined distance (the outer diameter of outer casing 1b) using the lifting cylinder 3 in order to lay out the next layer of outer casing 1b on top of it.

[0028] The rod storage frame body 2 has sliding mechanisms 2a attached to each of the eight corners of its top and bottom, which slide against the protruding guide pieces 9a of the opposing rectangular frame body 9. This allows the rod storage frame body 2 to move smoothly up and down along the height direction of the rectangular frame body 9, even when rods are stacked inside.

[0029] The lifting cylinder 3 has a pulley 3a attached to the end of the cylinder rod, and a chain 3b is wrapped around the pulley 3a. One end of the chain 3b is connected to the cylinder fixing frame 4 and the other end is connected to the rod storage frame 2. Since the cylinder fixing frame 4 is immobile, when the cylinder rod extends, the rod storage frame 2 will rise. Conversely, when the cylinder rod retracts, the rod storage frame 2 will descend.

[0030] Furthermore, the amount of movement of the rod storage frame 2 is measured by an absolute-type first linear encoder 9c (Figure 16) attached to the rectangular frame 9. The first wire 9e (Figure 16) extending from the first linear encoder 9c is bent at a 90° angle by a grooved washer (Figure 16) and secured to the rod storage frame 2.

[0031] The cylinder fixing frame body 4 has a ladder frame structure. The cylinder fixing frame body 4, together with the rectangular frame 9 described later, forms the main structural part of the rod supply stand 100. Two lifting cylinders 3 and two jack cylinders 12 are attached to each cylinder fixing frame body 4.

[0032] The rod bracket 5 consists of two horizontal bars for transporting the rod. Worm wheels (not shown), each with a gear formed on its outer circumference, are attached to both ends of the rod bracket 5. The worm wheels mesh with a worm shaft (not shown) of the bracket transport device 6, which has a worm gear formed on its outer circumference. Therefore, when the worm shaft rotates, the rod bracket 5 moves along the worm shaft in a lateral direction perpendicular to the longitudinal direction.

[0033] The bracket transport device 6 comprises a worm shaft (not shown) with a worm gear formed on its outer circumference, and a hydraulic motor (not shown) that rotates the form shaft. Therefore, as the hydraulic motor rotates, the worm shaft rotates, and the rod bracket 5 moves in a lateral direction perpendicular to the longitudinal direction. The amount of movement of the rod bracket 5 is measured by an absolute-type second linear encoder 9d (Figure 16) attached to the rectangular frame body 9. A second wire 9f (Figure 16) extending from the second linear encoder 9d is directly connected to the rod bracket 5.

[0034] The bracket transport device 6 moves the double-tube tools 1 one by one via the rod bracket 5 to a position where they can be clamped by the guided clamping device 7.

[0035] The guided clamping device 7 comprises a clamping mechanism 7a for gripping the rod and a guide mechanism 7b for pushing the rod forward. The guide mechanism 7b is fixed in parallel adjacent to the clamping mechanism 7a. Two guided clamping devices 7 are provided, and the two clamping mechanisms 7a, 7a are connected by a clamping shaft 7c.

[0036] The guide mechanism 7b is connected to one end of the guide shaft 7d. The other end of the guide shaft 7d is engaged with the clamp swivel device 8 or the bearing 9b. Details of the clamp mechanism 7a will be described later with reference to Figure 2. Details of the guide mechanism 7b will be described later with reference to Figure 3.

[0037] The clamp swivel device 8 swivels the guided clamp device 7 toward the drilling device side or the rod storage frame body 2 side. The clamp swivel device 8 is equipped with a swivel motor 8a and a reduction gear pair 8b.

[0038] The rectangular frame body 9 is positioned on the front and rear and outer sides in the longitudinal direction of the rod storage frame body 2, and both are connected to two cylinder fixing frame bodies 4, 4 which are positioned on the left and right and outer sides in the longitudinal direction of the rod storage frame body 2.

[0039] Each rectangular frame body 9 has guide pieces 9a on both the left and right sides, and the sliding mechanism 2a of the rod storage frame body 2 slides on the guide pieces 9a. A bracket transport device 6 is also provided at the top. Furthermore, a clamp swivel device 8 or a bearing 9b is provided on the upper side of the rectangular frame body 9.

[0040] The vertical rod stopper 10 is a stopper that restricts vertical movement relative to the double-tube tool 1 or the outer casing 1b. On the other hand, the vertical rod stopper 10' is a stopper that restricts vertical movement relative to the inner rod 1a.

[0041] The lateral rod stopper 11 is a stopper that restricts lateral movement of the double-tube tool 1 or the outer casing 1b. On the other hand, since the inner rod 1a is housed within the rod storage frame 2, a stopper to restrict lateral movement is not required for the inner rod 1a.

[0042] The jack cylinder 12 has its cylinder side fixed to the cylinder fixing frame body 4, and its rod side positioned on the ground. Therefore, when the rod extends, the entire assembly is displaced upward, and at the same time, the entire assembly is pressed against the ground, stabilizing its position.

[0043] Figure 2 is an explanatory diagram showing the clamping mechanism 7a of the guided clamping device 7. As shown in Figure 2(a), the clamping mechanism 7a is designed to open when the cylinder 7a4 extends. Also, as shown in Figures 2(b) and 2(c), the clamping mechanism 7a is designed to close when the cylinder 7a4 retracts.

[0044] As shown in Figure 2(b), when the stroke amount of the cylinder 7a4 in the retraction direction is small, the clamping mechanism 7a can clamp the outer casing 1b, which has a larger outer diameter. On the other hand, as shown in Figure 2(c), when the stroke amount of the cylinder 7a4 in the retraction direction is large, the clamping mechanism 7a can clamp the inner rod 1a, which has a smaller outer diameter.

[0045] The clamping mechanism 7a comprises an arm 7a1 for gripping the rod, a chuck piece 7a2 for driving the arm 7a1 via a link 7a3, a link 7a3 for linking the chuck piece 7a2 and the arm 7a1, a cylinder 7a4 for stroking the chuck piece 7a2 back and forth, a cylinder mounting plate 7a5 for fixing the cylinder 7a4, a base cover plate 7a6 and a space plate 7a7 for securing a gap between the cover plate 7a6 and the base cover plate 7a6, a fixed pin 7a8 that serves as the pivot point of the arm 7a1 and has an unchanging position, a first movable pin 7a9 that connects the arm 7a1 and the link 7a3 and has a variable position, a second movable pin 7a10 that connects the chuck piece 7a2 and the link 7a3 and has a variable position, and a rod receiving member 7a11 for receiving the rod (double-tube tool 1, inner rod 1a, outer casing 1b). The rod receiving member 7a11 is attached to the upper back surface of the cover plate 7a6. There are two cover plates 7a6, and the other cover plate 7a6 (not shown) has a through hole (not shown) for attaching the clamp shaft 7c (Figure 1).

[0046] Figure 3 is an explanatory diagram showing the guide mechanism 7b of the guided clamping device 7. As shown in Figure 3(c), the guide mechanism 7b is designed to close when the cylinder 7b4 extends. Also, as shown in Figure 3(b)(a), the guide mechanism 7b is designed to open when the cylinder 7b4 retracts.

[0047] As shown in Figure 3(b), the opening of the guide mechanism 7b is also reduced when the stroke amount of the cylinder 7b4 in the compression direction is small. In this case, it is possible to eject the inner rod 1a forward. On the other hand, as shown in Figure 3(a), the opening of the guide mechanism 7b is also increased when the stroke amount of the cylinder 7b4 in the compression direction is large. In this case, it is possible to eject the outer casing 1b or the double-tube tool 1 forward.

[0048] The guide mechanism 7b consists of an arm 7b1 that drives the guide piece 7b6, a guide piece 7b2 that drives the arm 7b1 via a link 7b3, a link 7b3 that connects the guide piece 7b2 and the arm 7b1, a cylinder 7b4 that causes the guide piece 7b2 to move back and forth, a cylinder mounting plate 7b5 for fixing the cylinder 7b4, a guide piece 7b6 that pushes out the rod, and a fixed pin 7 that serves as the pivot point of the arm 7b1 and whose position remains unchanged. The structure comprises b8, a first movable pin 7b9 that connects arm 7b1 and link 7b3 and has a variable position, a second movable pin 7b10 that connects guide piece 7b2 and link 7b3 and has a variable position, a third movable pin 7b11 that connects guide piece 7b6 and arm 7b1 and has a variable position, a fourth movable pin 7b12 that connects upper guide piece 7b6 and lower guide piece 7b6 and has a variable position, and a guide shaft mounting plate 7b13 for attaching the guide shaft 7d (Figure 1).

[0049] Figure 4 is an explanatory diagram showing the process of supplying the double-tube tool 1 to the drilling machine, specifically the step of moving the double-tube tool 1 to a transportable position using the rod bracket 5.

[0050] When the control device (not shown) receives a command signal from the operator to start work, it drives the lifting cylinder 3 to raise the rod storage frame 2. This raises the stack of double-tube tools 1 (in this embodiment, 3 layers of 6 tools per layer). The amount of height the double-tube tools are raised is measured by the first linear encoder 9c (Figure 16) attached to the rectangular frame 9.

[0051] When the double-tube tool 1 reaches the position where it can be transported by the rod bracket 5, the control device stops the lifting cylinder 3. After that, the lateral rod stopper 11 is removed by the operator. This "position where it can be transported by the rod bracket 5" is detected by the control device based on the measurement value from the absolute type second linear encoder 9d (Figure 16) attached to the rectangular frame body 9. Incidentally, at the position where it can be transported by the rod bracket 5, the axis of the rod bracket 5 and the axis of the outer casing 1b of the double-tube tool 1 are almost aligned.

[0052] Figure 5 is an explanatory diagram showing the process of rotating the guided clamping device 7 to the clamping position as part of the supply process of the double-tube tools 1 to the drilling machine. The lateral rod stopper 11 is assumed to have been removed by the operator and placed on the stopper rack 4a.

[0053] The control device detects that the double-tube tool 1 has reached a position where it can be transported by the rod bracket 5, and then drives the clamp swivel device 8 to swivel the guided clamp device 7 to the clamping position. This "clamping position" is, for example, the position where the arm 7a1 (Figure 2) of the clamping mechanism 7a (Figure 2) faces the double-tube tool 1, and the axis of the cylinder 7a4 (Figure 2) intersects the axis of the double-tube tool 1. The "clamping position" is detected by a proximity sensor (not shown).

[0054] Figure 6 is an explanatory diagram showing the process of opening the guided clamping device 7 during the supply process of the double-tube tool 1 to the drilling machine. For the sake of explanation, the guide mechanism 7b is assumed to already be in the open position.

[0055] The control device opens the guide mechanism 7b, and then drives the cylinder 7a4 (Figure 2) to open the clamp mechanism 7a. As the chuck piece 7a2 is pushed forward by the cylinder 7a4 (Figure 2), the link 7a3 is also pushed forward by the chuck piece 7a2. As a result, the arm 7a1 swings outward around the fixing pin 7a8 as a pivot point, opening the clamp mechanism 7a.

[0056] The open state of the clamping mechanism 7a is detected by the stroke amount of the cylinder 7a4. Similarly, the open state of the guide mechanism 7b is detected by the stroke amount of the cylinder 7b4.

[0057] Figure 7 is an explanatory diagram showing the process of supplying the double-tube tool 1 to the drilling machine, specifically the process of transporting the double-tube tool 1 to the guided clamping device 7 by the rod bracket 5.

[0058] After detecting that the guided clamp device 7 is in the open state, the control device drives the bracket transport device 6 to move the double-tube tool 15 to the guided clamp device 7. The amount of movement of the double-tube tool 1 is stored in advance in the control program of the control device.

[0059] Figure 8 is an explanatory diagram showing the transfer process of the double-tube tools 1, which is part of the supply process of the double-tube tools 1 to the drilling machine, in which the clamped double-tube tools 1 are transferred to the drilling machine.

[0060] First, the control device drives the cylinder 7a4 (Figure 2) to close the arm 7a1 of the guided clamping device 7. As a result, the double-tube tool 1 is clamped by the guided clamping device 7.

[0061] Next, the control device rotates the guided clamping device 7, which is clamping the double-tube tool 1, toward the drilling device using the clamp swivel device 8. The rotation of the guided clamping device 7 toward the drilling device is detected by a proximity sensor (not shown).

[0062] Next, the control device drives the cylinder 7a4 (Figure 2) to open the guided clamping device 7.

[0063] The control device then drives the cylinder 7b4 to open the guide piece 7b6 of the guided clamp device 7 (Figure 3(a)). As a result, the double-tube tool 1 is pushed out of the guided clamp device 7 and handed over to the rod change mechanism (not shown) on the drilling device side.

[0064] In this manner, the control device repeatedly performs the steps shown in Figures 5-8 until the first layer of double-tube tools 1 has been successfully handed over to the drilling device. Once the first layer of double-tube tools 1 has been successfully handed over to the drilling device, the control device repeats the steps shown in Figure 4, and then repeats the steps shown in Figures 5-8 until the second and third layers of double-tube tools 1 have also been handed over to the drilling device.

[0065] Incidentally, by making the back surface (cover plate 7a6) of the guided clamping device 7 a circumferential curved surface, the sliding resistance between it and the double-tube tools 1 during rotation is reduced, resulting in smoother rotation. Furthermore, the back surface (cover plate 7a6) of the guided clamping device 7 also functions as a fall prevention mechanism for the double-tube tools 1 stacked on the rod storage frame body 2 after it has rotated toward the drilling device.

[0066] Figure 9 is an explanatory diagram showing the process of receiving the inner rod 1a from the drilling device during the inner rod removal process.

[0067] The control device drives the bracket transport device 6 to return the rod bracket 5 to its origin position and drives the lifting cylinder 3 to raise the rod storage frame body 2 to a predetermined height. The origin position and predetermined height position are detected based on the measured values ​​of the absolute type first linear encoder 9c and second linear encoder 9d (Figure 16) provided on the rectangular frame body 9.

[0068] Next, the control device drives the cylinder 7a4 (Figure 2) of the guided clamping device 7 to clamp the inner rod 1a, which is being handed over from the drilling device by the arm 7a1. Next, the operator manually removes the inner liner 2b of the rod storage frame body 2 in preparation for the next step.

[0069] Figure 10 is an explanatory diagram showing the rotation process of the guided clamping device 7 that clamps the inner rod 1a during the inner rod removal process.

[0070] After confirming that the guided clamping device 7 has clamped the inner rod 1a, the control device drives the clamp swivel device 8 to swivel the "guided clamping device 7 that has clamped the inner rod 1a" toward the rod storage frame body 2. Detection of the swiveling of the guided clamping device 7 toward the rod storage frame body 2 is performed by a proximity sensor (not shown).

[0071] Figure 11 is an explanatory diagram showing the inner rod storage process, in which the guided clamping device 7 houses the inner rod 1a inside the rod storage frame body 2, as part of the inner rod removal process.

[0072] After confirming that the guided clamping device 7 has rotated toward the rod storage frame body 2, the control device drives cylinders 7a4 (Figure 2) and 7b4 of the guided clamping device 7, respectively, to open both the clamping mechanism 7a and the guide mechanism 7b. As a result, the inner rod 1a is released from the guided clamping device 7 and stored inside the rod storage frame body 2.

[0073] The open state of the clamp mechanism 7a is detected by detecting the stroke amount of the cylinder 7a4. Similarly, the open state of the guide mechanism 7b is detected by detecting the stroke amount of the cylinder 7b4.

[0074] The control device then repeats the process shown in Figures 9-11 to recover all of the inner rods 1a.

[0075] Figure 12 is an explanatory diagram showing the process of receiving the outer casing 1b from the drilling machine during the outer casing removal process.

[0076] After confirming that the inner rod 1a, which was handed over from the drilling device, has been completely stored in the rod storage frame 2, the control device drives the clamp rotation device 8 to rotate the open guided clamp device 7 toward the drilling device.

[0077] Subsequently, the control device drives the cylinder 7a4 (Figure 2) of the guided clamping device 7 to clamp the outer casing 1b, which is being handed over from the drilling device by the arm 7a1. Next, the operator manually attaches the insert 2b to the rod storage frame 2 in preparation for the next process. This insert 2b supports the outer casing 1b.

[0078] Figure 13 is an explanatory diagram showing the rotation process of the guided clamping device 7 that clamps the outer casing 1b during the outer casing removal process.

[0079] After confirming that the guided clamping device 7 has clamped the outer casing 1b, the control device drives the clamp swivel device 8 to swivel the guided clamping device 7, which is clamping the outer casing 1b, toward the rod storage frame body 2. Detection of the swiveling of the guided clamping device 7 toward the rod storage frame body 2 is performed by a proximity sensor (not shown).

[0080] Figure 14 is an explanatory diagram showing the outer casing storage process, in which the outer casing 1b is stored on the rod storage frame 2, as part of the outer casing removal process.

[0081] After confirming that the guided clamping device 7 has rotated toward the rod storage frame body 2, the control device drives cylinders 7a4 (Figure 2) and 7b4 of the guided clamping device 7, respectively, to open both the clamping mechanism 7a and the guide mechanism 7b. As a result, the outer casing 1b is released from the guided clamping device 7 and moves along the inner lining 2b and is stored on the rod storage frame body 2.

[0082] The open state of the clamp mechanism 7a is detected by detecting the stroke amount of the cylinder 7a4 (Figure 2). Similarly, the open state of the guide mechanism 7b is detected by detecting the stroke amount of the cylinder 7b4.

[0083] Figure 15 is an explanatory diagram showing the process of lowering the rod storage frame 2 after the recovery of one layer of the outer casing 1b has been completed during the outer casing removal process.

[0084] The control device temporarily stops the retrieval operation after confirming that one layer (6 pieces) of outer casing 1b has been retrieved. Then, the operator removes the lateral rod stopper 11 from the stopper holder 4a and secures one layer (6 pieces) of outer casing 1b with the lateral rod stopper 11.

[0085] Based on the operator's command to resume operation, the control device drives the lifting cylinder 3 to lower the rod storage frame 2 in preparation for retrieving the next layer (6 units) of outer casings 1b. The amount of descent is equivalent to the outer diameter of the outer casings 1b. The amount of descent is measured by an absolute-type first linear encoder 9c (Figure 16) attached to the rectangular frame 9.

[0086] The control device then repeats the process shown in Figures 12-15 to recover all of the outer casing 1b.

[0087] As described above, according to the rod supply stand 100 of one embodiment of the present invention, by providing a rod storage frame body 2 for retrieving inner rods in the lower section, it becomes possible to supply and store double-tube tools 1 in multiple layers within the rod supply stand 100, and to retrieve and store the inner rods 1a and outer casings 1b separately. Furthermore, it becomes possible to move and transport each rod supply stand 100 with all the double-tube tools 1 necessary for the drilling process stored inside, and also to move and transport each rod supply stand 100 with all the inner rods 1a and outer casings 1b used in the drilling process stored separately.

[0088] Furthermore, by providing a guided clamping device 7, it becomes possible to supply 2.5m class double-tube tools 1 in a horizontal position, thereby enabling work at a height of approximately 1.3m. In addition, it becomes possible to apply rods from φ133 to φ57 in a space-saving manner.

[0089] In particular, the guide mechanism 7b attached to the bracket transport device 6 and the guided clamp device 7 enables the pushing and discharging of the double-tube tool 1 into the clamp mechanism 7a, as well as the discharging of the inner rod 1a and outer casing 1b, respectively. Encoders and proximity sensors are installed in each direction of movement, allowing the operating status to be monitored. Since the rod supply stand 100 detects its position with an encoder, it can accommodate tools of various outer diameters.

[0090] Furthermore, the rod supply frame 100 can be operated in conjunction with, for example, a drilling device with a rod changing mechanism as described in Japanese Patent Application Publication No. 2023-017311. [Explanation of Symbols]

[0091] 1 Double-tube tools 1a Inner rod (internal tube) 1b Outer casing (outer tube) 2 Rod storage frame 2a Slide mechanism 2b Insole 3. Lifting cylinder 3a pulley 3b Chain 4 Cylinder fixed frame body (side frame body) 5 Rod brackets 6. Bracket conveying device 7. Guided clamping device (rod clamping device) 7a Clamping mechanism 7a1 Arm 7a2 Chuck Piece 7a3 Link 7a4 Cylinder 7a5 Cylinder mounting plate 7a6 Cover plate 7a7 Space board 7a8 Fixing pin 7a9 First movable pin 7a10 Second movable pin 7a11 Rod support member 7b Guide mechanism 7b1 Arm 7b2 Guidepiece 7b3 Link 7b4 Cylinder 7b5 Cylinder mounting plate 7b6 Guide piece 7b7 Space board 7b8 Fixing pin 7b9 First movable pin 7b10 Second movable pin 7b11 Third movable pin 7b12 4th movable pin 7b13 Guide shaft mounting plate 7c clamp shaft 7d guide axis 8. Clamp Swivel Device 8a Swivel motor 8b Reduction gear 9 Rectangular Frame 9a Guide piece 9b bearing 9c First Linear Encoder 9d Second Linear Encoder 9e First wire 9f Second wire 9g grooved washer 10. Vertical rod stopper 11 Lateral rod stopper 12 Jack Cylinder 100 Rod Supply Stand

Claims

1. A rod supply stand (100) capable of automatically supplying a double-tube drilling tool (1), consisting of an inner tube (1a) and an outer tube (1b), to a machine having a rod change mechanism, and also capable of automatically retrieving and storing the inner tube (1a) and the outer tube (1b) individually, The rod supply stand (100) comprises a rod storage frame body (2) having a bathtub-shaped frame structure and configured to be able to move up and down, Rectangular frame bodies (9, 9) are arranged on the front, rear and outer sides in the longitudinal direction of the rod storage frame body (2), Side frame bodies (4, 4) are arranged on the left and right and outward sides respectively in the longitudinal direction of the rod storage frame body (2), A rod bracket (5) is bridged between the rectangular frame bodies (9, 9) and configured to be movable in a direction intersecting the longitudinal direction, The double-tube tool (1), the inner tube (1a), and the outer tube (1b) are each configured to be clampable and rotatable rod clamping devices (7, 7). A rod supply stand characterized by the following features.

2. In the rod supply frame according to claim 1, The rod clamping device (7, 7) includes a guide mechanism (7b) that can push the double-tube tool (1), the inner tube (1a), and the outer tube (1b) forward, respectively. A rod supply stand characterized by the following features.

Images