Piping joint operating device

Abstract

To allow disconnection work between pipes to be remotely performed.SOLUTION: A joint 20 comprises a coupler 21 comprising a first cylindrical part 22 as a joint body, and an operation lever 25 as an operation part. The first cylindrical part 22 is constituted so as to be connected to a terminal of a first pipe 11. The operation lever 25 is provided so as to be movable between a connection position and a disconnection position on an outer periphery of the first cylindrical part 22, and constituted so as to prevent movement of the first pipe 11 in an axial direction A with respect to a second pipe 12 when the operation lever is located at the connection position, and allow movement of the first pipe 11 in the axial direction A with respect to the second pipe 12 when the operation lever is located at the disconnection position. A first operation device 40 comprises an actuator 41 attached to the first pipe 11, and constituted so as to move the operation lever 25 to the disconnection position from the connection position.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an operating device for a piping joint. [Background technology]

[0002] For example, Patent Document 1 discloses a lever-type pipe joint that couples pipes together in a connected state. The lever-type pipe joint includes a coupler and an adapter. The coupler has a first cylindrical portion. The adapter is detachably inserted into the first cylindrical portion in the axial direction. The cam arm is rotatably mounted on the first cylindrical portion between an unlocked position and a locked position. When in the unlocked position, the cam arm allows the second cylindrical portion to move axially relative to the first cylindrical portion, and when in the locked position, the cam arm couples the second cylindrical portion to the first cylindrical portion so that it cannot move axially. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-68467 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when disconnecting pipes connected to each other via the above-mentioned pipe joints underwater, the work must be performed by a diver, which poses problems such as the time required for the work.

[0005] These problems arise not only underwater, but also when work to disconnect pipes from each other (hereinafter referred to as disconnection work) is carried out on land. An object of the present invention is to provide an operating device for a piping joint that can remotely perform the operation of disconnecting pipes from each other. [Means for solving the problem]

[0006] The operating device for a piping joint that solves the above-mentioned problem is applied to a first pipe and a second pipe that are coupled together in a connected state via a joint, and releases the coupled state of the first pipe and the second pipe by operating the joint, the joint having a joint body and an operating part, the joint body being cylindrical and configured to be connected to an end of the first pipe, the operating part being movable on the outer periphery of the joint body between a disengagement position and a coupled position, and configured to prevent axial movement of the first pipe relative to the second pipe when in the coupled position and to allow axial movement of the first pipe relative to the second pipe when in the disengagement position, and including an actuator attached to the first pipe and configured to move the operating part from the coupled position to the disengagement position.

[0007] According to this configuration, when the first pipe and the second pipe are coupled to each other via the joint, the actuator moves the operating unit from the coupled position to the uncoupled position, allowing the first pipe to move axially relative to the second pipe. This releases the coupled state of the first pipe and the second pipe. Therefore, the operation of uncoupling the first pipe and the second pipe can be performed remotely.

[0008] In the operating device for a piping joint, it is preferable that the actuator is configured to move the operating portion from the disengaged position to the coupled position. According to this configuration, the first pipe and the second pipe are connected to each other, and in an uncoupled state, the actuator moves the operating unit from the uncoupled position to the coupled position, thereby preventing the first pipe from moving in the axial direction relative to the second pipe. This couples the first pipe to the second pipe. Therefore, the coupling work of the first pipe and the second pipe can be performed remotely.

[0009] In the operating device for the above-mentioned piping joint, the operating part is an operating lever that extends in the axial direction of the joint body in the coupled position and extends intersecting the axial direction of the joint body in the uncoupled position, and has a locking part that engages with the second pipe in the coupled position and releases the locked state with the second pipe in the uncoupled position, and a connecting part is provided on the outer periphery of the joint body that rotatably connects the operating lever between the coupled position and the uncoupled position, and it is preferable that the actuator is configured to rotate the operating lever between the coupled position and the uncoupled position.

[0010] In a lever-type coupling, when the operating lever is in the coupled position, the operating lever extends in the axial direction of the coupling body, thereby engaging the locking portion of the operating lever with the second pipe. When the operating lever is in the uncoupled position, the operating lever extends in a position intersecting the axial direction of the coupling body, thereby disengaging the locking portion of the operating lever from the second pipe.

[0011] According to the above configuration, when the operating lever is in the coupled position, the actuator rotates the operating lever to the uncoupled position, thereby disengaging the first pipe from the second pipe. Also, when the operating lever is in the uncoupled position, the actuator rotates the operating lever to the coupled position, thereby coupling the first pipe to the second pipe. Therefore, the operation of coupling and uncoupling the first pipe to the second pipe can be performed remotely via the lever-type joint.

[0012] In the above-mentioned operating device for a piping joint, it is preferable that the actuator comprises a screw shaft extending in the axial direction of the first pipe, a support portion provided on the outer periphery of the first pipe and configured to support the screw shaft so that it can move back and forth in the axial direction, a ball screw having a nut threaded onto the screw shaft, a drive portion configured to rotate the screw shaft, and a connecting member rotatably connected to the nut and the tip end of the operating lever, respectively, and configured to rotate the operating lever between the coupled position and the uncoupled position as the nut moves in the axial direction.

[0013] According to this configuration, the nut moves in the axial direction of the first pipe when the driver rotates the screw shaft. The operating lever is rotated between the coupled position and the disengaged position by the connecting member in accordance with this movement of the nut. This allows the actuator that rotates the operating lever to be realized with a simple configuration.

[0014] In the above-mentioned operating device for a piping joint, the actuator comprises a rod that is rotatably connected to the tip of the operating lever and extends toward the side away from the second piping in the axial direction of the first piping, a cylindrical housing that is supported so as to be tiltable relative to the first piping around an axis that intersects the axial direction of the first piping and that accommodates the rod, and a drive unit that is provided inside the housing and is configured to reciprocate the rod in the axial direction of the rod, and it is preferable that the housing is configured to tilt around the axis in accordance with the reciprocating movement of the rod.

[0015] According to this configuration, when the operating lever is in the coupled position, the rod is driven by the drive unit, causing the rod to advance outward through the opening in the housing. The operating lever is then rotated from the coupled position to the disengaged position by the rod. At this time, the reciprocating movement of the rod causes the housing to tilt about an axis that intersects with the axial direction of the first pipe. This allows an actuator that rotates the operating lever to be realized with a simple configuration. [Effects of the Invention]

[0016] According to the present invention, the work of disconnecting the pipes from each other can be performed remotely. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a perspective view showing a first pipe and a second pipe separated from each other in the first embodiment. [Figure 2] FIG. 2 is a perspective view showing the first pipe and the second pipe in a coupled state in the first embodiment. [Figure 3] FIG. 3 is a cross-sectional view showing the first pipe and the second pipe in a coupled state in the first embodiment. [Figure 4] FIG. 4 is a cross-sectional view showing the first pipe and the second pipe in a coupled state in the second embodiment. [Figure 5] FIG. 5 is a cross-sectional view showing the first pipe and the second pipe in a decoupled state in the second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0018] First Embodiment The first embodiment will be described below with reference to FIGS. As shown in Figures 1 and 2, an operating device for a piping joint (hereinafter referred to as a first operating device 40) is applied to a first pipe 11 and a second pipe 12 that are connected to each other via a joint 20.

[0019] The first pipe 11 and the second pipe 12 of this embodiment are disposed in the sea. More specifically, the first pipe 11 and the second pipe 12 are used in foundation construction for an offshore wind power plant. The foundation (not shown) is fixed to the seabed and is hollow.

[0020] The second pipe 12 is connected to the ceiling wall of the foundation and extends vertically upward. The first pipe 11 is connected to the upper end of the second pipe 12 and extends vertically out to sea.

[0021] After the foundation is fixed to the seabed, work is performed to create a vacuum inside the foundation. At this time, a coupling work is performed in which the first pipe 11 is connected to the second pipe 12, which is previously connected to the foundation, via a joint 20. After this, the upper end of the second pipe 12 is opened by a valve device 50 provided on the second pipe 12. Then, air is extracted from inside the foundation by a pump (not shown) through the first pipe 11 and the second pipe 12, which are connected to each other via the joint 20. After the inside of the foundation is created in a vacuum state, the upper end of the second pipe 12 is closed by the valve device 50 before removing the first pipe 11 from the second pipe 12. Then, work is performed to disconnect the first pipe 11 and the second pipe 12.

[0022] First, the configuration of the second pipe 12 will be described. <Second Pipe 12 and Valve Device 50> As shown in FIGS. 1 to 3, the second pipe 12 includes a pipe main body 12A and an adapter 31. The adapter 31 is made of a resin.

[0023] The adapter 31 has a second cylindrical portion 32. An engaging groove 33 is provided on the outer circumferential surface of the second cylindrical portion 32. The engaging groove 33 is provided around the entire circumference of the second cylindrical portion 32.

[0024] The second cylindrical portion 32 is configured to be connected to the end of the piping main body 12A. A male thread (not shown) is formed on the outer peripheral surface of the end of the piping main body 12A. A female thread (not shown) that screws onto the male thread of the piping main body 12A is formed on the inner peripheral surface of the second cylindrical portion 32.

[0025] 1 and 2, the second pipe 12 is provided with a valve device 50. The valve device 50 includes a valve element (not shown) that opens and closes the second pipe 12. The valve element is, for example, a butterfly valve.

[0026] An operating handle 51 for operating the valve element of the valve device 50 to open and close is provided on the outside of the second pipe 12. Next, the configuration of the first pipe 11 and the joint 20 will be described. <First piping 11 and fitting 20> As shown in FIGS. 1 to 3, the joint 20 includes a coupler 21. The coupler 21 has a first cylindrical portion 22 as a joint body, and a pair of operating levers 25 as an operating portion.

[0027] The first cylindrical portion 22 is configured to be connected to the end of the first pipe 11. A male thread (not shown) is formed on the outer peripheral surface of the end of the first pipe 11. A female thread (not shown) that screws onto the male thread of the first pipe 11 is formed on the inner peripheral surface of the first cylindrical portion 22.

[0028] 3, the tip end of the second cylindrical portion 32 is inserted into the inside of the tip end of the first cylindrical portion 22. An annular seal member 29 is provided between the first cylindrical portion 22 and the second cylindrical portion 32 in the axial direction of the first piping 11 (hereinafter referred to as the axial direction A). The seal member 29 is compressed in the axial direction A by the first cylindrical portion 22 and the second cylindrical portion 32. This seals the gap between the first cylindrical portion 22 and the second cylindrical portion 32, i.e., the gap between the first piping 11 and the second piping 12.

[0029] The pair of operating levers 25 are provided with the first cylindrical portion 22 sandwiched therebetween. The operating lever 25 is provided on the outer periphery of the first cylindrical portion 22 so as to be movable between a coupled position and a disengaged position. When the operating lever 25 is in the coupled position, it is configured to prevent movement of the first pipe 11 in the axial direction A relative to the second pipe 12. When the operating lever 25 is in the disengaged position, it is configured to allow movement of the first pipe 11 in the axial direction A relative to the second pipe 12.

[0030] As shown by the solid line in FIG. 3, the operating lever 25 is in a position where it extends in the axial direction A of the first cylindrical portion 22 at the coupled position. As shown by the two-dot chain line in FIG. 3, the operating lever 25 is in a position where it extends intersecting with the axial direction A of the first cylindrical portion 22 at the coupling release position.

[0031] A connecting portion 23 is provided on the outer periphery of the first cylindrical portion 22 to connect the operating lever 25 rotatably between a coupling position and a disengagement position. The operating lever 25 has a base end provided with a locking portion 25a. As shown by the solid line in FIG. 3, when the operating lever 25 is in the coupled position, the locking portion 25a is locked with the locking groove 33 of the adapter 31 that constitutes the second pipe 12.

[0032] As shown by the two-dot chain line in FIG. 3, when the operating lever 25 is in the disengagement position, the locking portion 25a is released from the locking groove 33 of the adapter 31. <First operating device 40> As shown in Figures 1 and 2, the first operating device 40 is configured to be able to release the connection between the first pipe 11 and the second pipe 12 and to connect the first pipe 11 and the second pipe 12 by operating the operating lever 25.

[0033] The first operating device 40 includes an actuator 41 attached to the first pipe 11 . The actuator 41 is configured to rotate the operating lever 25 between an engaged position and an unengaged position.

[0034] In this embodiment, a pair of actuators 41 are provided corresponding to the pair of operation levers 25 with the first pipe 11 interposed therebetween. The actuator 41 includes a ball screw 42, a drive unit 46, a connecting member 47, and a guide member 48.

[0035] The ball screw 42 has a screw shaft 43 extending in the axial direction A of the first pipe 11, a support portion 44 provided on the outer periphery of the first pipe 11 and configured to support the screw shaft 43 so that it can move back and forth in the axial direction A, and a nut 45 threaded onto the screw shaft 43.

[0036] The drive unit 46 is configured to rotate the screw shaft 43. The drive unit 46 is, for example, a motor. A control device that controls the drive unit 46 is connected to the drive unit 46 via a cable (not shown).

[0037] The connecting member 47 is rotatably connected to the nut 45 and the tip of the operating lever 25, respectively, and is configured to rotate the operating lever 25 between an engaged position and an unengaged position as the nut 45 moves in the axial direction A.

[0038] In this embodiment, a pair of long plate-shaped connecting members 47 are provided so as to sandwich one operating lever 25 and a nut 45 therebetween. Guide member 48 is connected to the outer periphery of first pipe 11 and extends toward the terminal side of first pipe 11. Guide member 48 extends in an arc shape along the rotation trajectory of the tip of operating lever 25. Guide member 48 has an arc-shaped guide hole 48a that extends along the rotation trajectory. Guide member 48 is sandwiched between a pair of connecting members 47. A connecting pin 49 that connects the pair of connecting members 47 and the tip of operating lever 25 so as to be rotatable relative to each other is inserted into guide hole 48a.

[0039] The rotation axis L1 of the base end of the operating lever 25 relative to the connecting portion 23, the rotation axis L2 of the connecting member 47 relative to the tip end of the operating lever 25, and the rotation axis L0 of the connecting member 47 relative to the nut 45 are parallel to one another (see FIG. 1).

[0040] <Second operating device 60> As shown in FIGS. 1 and 2, a second operating device 60 is connected to the first pipe 11 via a connecting mechanism 70.

[0041] The second operating device 60 includes a motor 61 configured to be able to rotate the operating handle 51 of the valve device 50. A control device that controls the motor 61 is connected to the motor 61 via a cable (not shown).

[0042] The second operating device 60 is provided with a camera (not shown) that photographs the valve device 50, the coupler 21, and the like. In FIG. 3, the first operating device 40, the valve device 50, the operating handle 51, and the second operating device 60 are omitted from the illustration.

[0043] Next, the operation of this embodiment will be described. 2, in a coupled state in which the first pipe 11 and the second pipe 12 are coupled to each other via the joint 20, the nut 45 moves toward the operating lever 25 in the axial direction A by rotating the screw shaft 43 in a first direction using the drive unit 46. Then, in accordance with this movement of the nut 45, the connecting member 47 rotates the operating lever 25 from the coupled position (solid line in FIG. 3) toward the uncoupled position (two-dot chain line in FIG. 3).

[0044] 3, when the operating lever 25 is in the disengagement position, the operating lever 25 extends intersecting the axial direction A of the first cylindrical portion 22, thereby disengaging the engagement between the locking portion 25a of the operating lever 25 and the locking groove 33 of the second pipe 12. This allows the first pipe 11 to move relative to the second pipe 12 in the axial direction A, thereby disengaging the engagement between the first pipe 11 and the second pipe 12.

[0045] 3, in a decoupled state in which the first pipe 11 and the second pipe 12 are connected to each other and are not coupled, the driver 46 rotates the screw shaft 43 in the direction opposite to the first direction. This causes the nut 45 to move toward the support part 44 in the axial direction A. As the nut 45 moves, the connecting member 47 rotates the operating lever 25 from the decoupled position (dash line in FIG. 3) toward the coupled position (solid line in FIG. 3).

[0046] 3, when the operating lever 25 is in the coupled position, the operating lever 25 extends in the axial direction A of the first cylindrical portion 22, and the locking portion 25a of the operating lever 25 is locked in the locking groove 33 of the second pipe 12. This prevents the first pipe 11 from moving in the axial direction A relative to the second pipe 12, and the first pipe 11 and the second pipe 12 are coupled together.

[0047] Next, the effects of this embodiment will be described. (1) The actuator 41 is configured to rotate the operating lever 25 between an engaged position and an unengaged position.

[0048] With this configuration, the above-mentioned effect is achieved, and therefore the first pipe 11 and the second pipe 12, which are connected and joined via the lever-type joint 20, can be disconnected and joined remotely.

[0049] (2) The actuator 41 includes a ball screw 42 , a drive unit 46 , and a connecting member 47 . According to this configuration, the actuator 41 that rotates the operating lever 25 can be realized with a simple configuration.

[0050] Second Embodiment The second embodiment will be described below with reference to FIGS. In this embodiment, the configuration of the actuator (hereinafter referred to as actuator 81) that constitutes the first operating device 40 is different from that of the first embodiment. The following mainly describes the differences from the first embodiment.

[0051] As shown in FIGS. 4 and 5, in this embodiment, a pair of actuators 81 are provided corresponding to a pair of operation levers 25 with the first pipe 11 interposed therebetween. The actuator 81 includes a rod 82 , a housing 83 , and a drive portion 88 .

[0052] The rod 82 is rotatably connected to the tip of the operating lever 25, and extends in the axial direction A of the first pipe 11 toward the side away from the second pipe 12. The housing 83 is cylindrical and accommodates the rod 82 . More specifically, the housing 83 includes a first housing portion 84 , a plate portion 85 , and a second housing portion 86 .

[0053] The first housing portion 84 is cylindrical and has a bottom 84a, an opening 84b facing the bottom 84a, and a flange 84c provided on the periphery of the opening 84b. The plate portion 85 covers the opening 84b of the first housing portion 84. The plate portion 85 is provided with an insertion hole 85a through which the rod 82 is inserted. The plate portion 85 is placed on the flange 84c and fixed to the flange 84c with bolts 87. An annular seal member 91 is provided in a seal groove provided in the flange 84c, between the flange 84c and the plate portion 85. The seal member 91 may be provided in two or three layers in the radial direction of the flange 84c.

[0054] The second housing portion 86 is cylindrical and has a base end portion 86a joined to the surface of the plate portion 85 opposite to the first housing portion 84, and a tip end portion 86b having an opening 86c. The diameter of the base end portion 86a increases as it approaches the plate portion 85.

[0055] The rod 82 is inserted through the second housing portion 86 . The inner diameter of the tip end 86b of the second housing part 86 is slightly larger than the outer diameter of the rod 82. A seal groove is provided on the inner peripheral surface of the tip end 86b of the second housing part 86, and an annular seal member 92 is provided between the tip end 86b and the rod 82.

[0056] The housing 83 has a connecting portion 89 connected to a support portion 11a provided on the outer circumferential surface of the first pipe 11. The connecting portion 89 is provided across the plate portion 85 and the second housing portion 86.

[0057] The housing 83 is supported by the support portion 11a so as to be tiltable relative to the first pipe 11 about an axis L3 that intersects with the axial direction A of the first pipe 11. A drive unit 88 is provided inside the first housing portion 84, and the drive unit 88 reciprocates the rod 82 in the axial direction of the rod 82. The drive unit 88 is attached to the plate portion 85.

[0058] The drive unit 88 includes a motor and a rack and pinion mechanism (both not shown) that converts the rotational motion of the motor into reciprocating motion of the rod 82. A battery (not shown) is provided inside the first housing portion 84.

[0059] The rotation axis L1 of the base end of the operating lever 25 relative to the connecting portion 23, the rotation axis L2 of the rod 82 relative to the tip end of the operating lever 25, and the rotation axis L3 of the connecting portion 89 relative to the support portion 11a are parallel to one another.

[0060] The housing 83 is configured to tilt about the axis L3 as the rod 82 reciprocates. A restricting portion 11b is protruded from the outer peripheral surface of the first pipe 11 and restricts tilting of the housing 83 by coming into contact with the second housing portion 86. The restricting portion 11b is located between the support portion 11a and the coupler 21 in the axial direction A.

[0061] Next, the operation of this embodiment will be described. When the operating lever 25 is in the coupled position (see FIG. 4), the rod 82 is driven by the driving unit 88, and as a result, the rod 82 advances outward through the opening 86c of the housing 83, as shown in FIG. 5. The operating lever 25 is then rotated from the coupled position to the disengaged position by the rod 82. At this time, the reciprocating movement of the rod 82 causes the housing 83 to tilt about the axis L3.

[0062] When the operating lever 25 is in the coupling release position, the operating lever 25 extends intersecting the axial direction A of the first cylindrical portion 22, thereby releasing the engagement between the locking portion 25a of the operating lever 25 and the locking groove 33 of the second pipe 12. This allows the first pipe 11 to move relative to the second pipe 12 in the axial direction A, and the coupling between the first pipe 11 and the second pipe 12 is released.

[0063] When the operating lever 25 is in the disengaged position (see FIG. 5), the rod 82 is driven by the driving unit 88, and as a result, the rod 82 retracts inward through the opening 86c of the housing 83, as shown in FIG. 4. The operating lever 25 is then rotated from the disengaged position to the engaged position by the rod 82. At this time, the reciprocating movement of the rod 82 causes the housing 83 to tilt about the axis L3.

[0064] When the operating lever 25 is in the coupled position, the operating lever 25 extends in the axial direction A of the first cylindrical portion 22, and the locking portion 25a of the operating lever 25 is locked in the locking groove 33 of the second pipe 12. This prevents the first pipe 11 from moving in the axial direction A relative to the second pipe 12, so that the first pipe 11 and the second pipe 12 are coupled together.

[0065] Next, the effects of this embodiment will be described. According to this embodiment, in addition to the effect (1) of the first embodiment, the following effect (3) can be achieved.

[0066] (3) The actuator 81 includes a rod 82, a housing 83, and a drive unit 88. The housing 83 is configured to tilt about an axis L3 as the rod 82 reciprocates.

[0067] According to this configuration, the above-mentioned effects are achieved, and therefore the actuator 81 that rotates the operating lever 25 can be realized with a simple configuration. <Example of change> The above embodiment can be modified as follows: The present embodiment and the following modifications can be combined with each other within the scope of technical compatibility.

[0068] A locking groove 33 may be provided on the outer peripheral surface of the pipe body 12A of the second pipe 12. In this case, the adapter 31 can be omitted. In the second embodiment, the drive unit 88 can also be configured by an air cylinder or a hydraulic cylinder.

[0069] The actuator can also be configured with a wire connected to the tip of the operating lever 25 and a winding device that winds up the wire. In this case, a pulley that changes the winding direction of the wire can be provided as appropriate, and a rotary drive device such as a motor that reciprocates the wire can also be provided as the winding device. The wire moves forward when the rotary drive device is rotated forward, and moves back when the rotary drive device is rotated backward. Even with this configuration, the operating lever 25 can be moved between the coupled position and the uncoupled position.

[0070] The number of operating levers 25 is not limited to two. The number of operating levers 25 may be three or more. The operating part that constitutes the joint is not limited to the operating lever 25, but may be anything that can be moved between the disengaged position and the engaged position.

[0071] The actuator may be one that moves the operating part only from the coupled position to the uncoupled position. The operating device for the pipe joint is not limited to being applied to the first pipe 11 and the second pipe 12 that are laid underwater. The operating device can also be applied to the first pipe and the second pipe that are laid on land. [Explanation of symbols]

[0072] 11...first piping, 11a...support portion, 11b...regulating portion, 12...second piping, 12A...piping body, 20...joint, 21...coupler, 22...first cylindrical portion (joint body), 23...connecting portion, 25...operating lever (operating portion), 25a...locking portion, 29...sealing member, 31...adapter, 32...second cylindrical portion, 33...locking groove, 40...first operating device (operating device), 41...actuator, 42...ball screw, 43...screw shaft, 44...support portion, 45...nut, 46...drive portion, 47...connecting member, 48...guide guide member, 48a...guide hole, 49...connecting pin, 50...valve device, 51...operating handle, 60...second operating device, 61...motor, 70...support member, 81...actuator, 82...rod, 83...housing, 84...first housing part, 84a...bottom, 84b...opening, 84c...flange, 85...plate part, 86...second housing part, 86a...base end, 86b...tip end, 86c...opening, 87...bolt, 88...drive part, 89...connecting part, 91...sealing member, 92...sealing member.

Claims

1. A piping joint operating device that is applied to a first pipe and a second pipe that are coupled together in a connected state via a joint, and that releases a coupled state of the first pipe and the second pipe by operating the joint, The joint has a joint body and an operating portion, The joint body is cylindrical and configured to be connected to an end of the first pipe, the operating portion is provided on the outer periphery of the joint body so as to be movable between a coupled position and a decoupled position, and is configured to prevent axial movement of the first pipe relative to the second pipe when in the coupled position, and to allow axial movement of the first pipe relative to the second pipe when in the decoupled position, an actuator attached to the first pipe and configured to move the operating unit from the coupled position to the uncoupled position; the operating portion is an operating lever that extends in the axial direction of the joint body at the coupled position and extends intersecting the axial direction of the joint body at the disengaged position, and has a locking portion that is engaged with the second pipe at the coupled position and is released from the engaged state with the second pipe at the disengaged position, a connecting portion is provided on an outer circumferential portion of the joint body, the connecting portion connecting the operating lever to the coupling position and the disengagement position so as to be rotatable therewith; The actuator is The operating lever is configured to rotate between the coupled position and the uncoupled position, a ball screw including a screw shaft extending in an axial direction of the first pipe, a support portion provided on an outer circumferential portion of the first pipe and configured to support the screw shaft so that the screw shaft can reciprocate in the axial direction, and a nut screwed onto the screw shaft; A drive unit configured to rotate the screw shaft; a connecting member that is rotatably connected to the nut and the tip end of the operating lever, respectively, and that is configured to rotate the operating lever between the coupled position and the uncoupled position in accordance with movement of the nut in the axial direction. Operating device for piping joints.

2. The actuator is configured to move the operating unit from the decoupled position to the coupled position. The operating device for a piping joint according to claim 1.

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