JP2006307991A - Pipe joint device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe joint device for an operator to be able to safely perform connection/disconnection operation. <P>SOLUTION: The pipe joint device 10 includes a first pipe joint support member 14, a second pipe joint support member 18, a lock means 22 locking both pipe joint support members at a connection position (Fig. 3) of the second pipe joint support member 18 making a first pipe joint member 12 of the first pipe joint support member 14 fit and connect to a second pipe joint member 16 of the second pipe joint support member 18 in relation to the first pipe joint support member 14, and a retention member engaging with the first pipe joint support member 14 and the second pipe joint support member 18 and retaining the second pipe joint support member 18 in relation to the first pipe joint support member 15 when the second pipe joint support member 18 is put close to the first pipe joint support member 14 and is put at a semi-connection position (Fig. 4). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pipe joint connecting device in a collective pipe joint that allows a plurality of fluid pipes to be connected and disconnected at the same time.

This type of pipe joint coupling device is fixed to a mold having a large number of fluid pipes for cooling liquid, for example, and a large number of first pipe joint members (for example, male molds) constituting connection terminals of the fluid pipes of the mold. A fixed pipe joint support member that supports a pipe joint member), and a plurality of second pipe joint members (for example, female pipes) that are fitted and connected to the multiple first pipe joint members of the fixed pipe joint support member, respectively. Joint member), and the second pipe joint member is simultaneously connected to and connected to the corresponding first pipe joint member by being gripped by the operator and moving toward and away from the fixed pipe joint support member. Generally, it is composed of a movable pipe joint support member for releasing. (See Patent Document 1)
British Patent No. 1216767

In such a pipe joint connection device for a collective pipe joint, for example, when the number of pipe joints is large or the fluid pressure in the pipe joint is high, a large connection operation force is required. In such a case, an operator who holds and operates the movable side pipe joint plate by hand may need to perform the connection operation using not only the hand force but also the entire body.
Also, when releasing this collective pipe joint, if the movable side pipe joint plate is tilted away from the fixed side pipe joint plate, a large frictional force is generated against the connection release. Power may be required. Even in this case, the operator may have to perform the connection release operation using not only the hand force but the entire body.
Depending on the working environment, the floor may be slippery. In such a case, it is dangerous for the operator to perform such a connecting operation and a separating operation.

  An object of this invention is to provide the pipe joint connection apparatus which an operator can perform connection / disconnection operation safely in view of the above points.

That is, the present invention
A first pipe joint support member that supports the first pipe joint member;
The second pipe joint member includes a second pipe joint member that is fitted and connected to the first pipe joint member, and a grip for gripping, and is in a predetermined connection position close to the first pipe joint support member. The second fitting is connected to the first pipe joint member and is released from the first pipe joint support member to release the fitting connection of the second pipe joint member with the first pipe joint member. A pipe joint support member;
Locking means for locking the second pipe joint support member to the first pipe joint support member at the coupling position;
A holding means for holding the second pipe joint support member at a predetermined semi-connection position close to the connection position, and when the second pipe joint support member is brought close to the first pipe joint support member into the semi-connection position, And a holding means for engaging the first pipe joint support member and the second pipe joint support member and holding the second pipe joint support member with respect to the first pipe joint support member. I will provide a.
In this pipe joint connecting device, since the holding means as described above is provided, the second pipe joint support member is connected to the first pipe joint support member at the quasi-connecting position before the second pipe joint support member is completely connected to the first pipe joint support member. Can be held. Therefore, when the pipe joint connecting device is provided with, for example, a toggle means for moving the second pipe joint support member from the semi-connection position to the connection position, the operator places the second pipe joint support member in the semi-connection position. Then, after releasing the second pipe joint support member, it is possible to operate the toggle means to prepare for the final connection operation by the toggle means to be performed next.

Specifically, the pipe joint coupling device is:
A shank attached to the second pipe joint support member and protruding toward the first pipe joint support member;
A tubular member provided in the first pipe joint support member and having a receiving hole for receiving the shank;
An engagement member attached to the tubular member so as to be displaceable in a radial direction;
An engagement element pressing position that is displaceable on the outer peripheral surface of the cylindrical member and that presses the engagement element radially inward to project the engagement element into the receiving hole, and a predetermined distance radially outward from the protrusion position. An engagement member operating member that is displaceable between an engagement element release position that allows displacement by a distance;
Locking means is formed on the outer peripheral surface of the shank and receives an engagement element that is in a protruding position when the second pipe joint support member is in the coupling position, and fixes the shank to the tubular member in the axial direction. A first engaging recess for
The holding means is formed at a position closer to the tip side than the first engaging recess on the outer peripheral surface of the shank, and receives the engaging member that is the protruding position when the second pipe joint support member is in the semi-connected position, A second engaging recess for fixing the shank in the axial direction relative to the tubular member can be provided.

More specifically,
A first toggle member attached to the first pipe joint support member;
A second toggle member that is attached to the second pipe joint support member and is engageable with the first toggle member when the second pipe joint support member is in the semi-connection position;
By pulling the second toggle member engaged with the first toggle member in a direction away from the first toggle member, the second pipe joint support member is brought close to the first pipe joint support member to be the connection position. And a toggle means having an attachment member,
When the second toggle member is attracted by the attracting member and the shank is urged toward the back of the receiving member, the second engaging recess engages with the engaging member to cause the engaging member to move in the radial direction. It can have a side wall that is displaced outward and releases the shaft in the axial direction.

The present invention also provides
A first pipe joint support member that supports the first pipe joint member;
The second pipe joint member includes a second pipe joint member that is fitted and connected to the first pipe joint member, and a grip for gripping, and is in a predetermined connection position close to the first pipe joint support member. The second pipe adapted to release the fitting connection of the second pipe joint member with the first pipe joint member by fitting and connecting the member to the first pipe joint member and being separated from the first pipe joint support member. A joint support member;
Locking means for locking the second pipe joint support member with respect to the first pipe joint support member at the coupling position;
Have
In a state where the second pipe joint member is aligned with the first pipe joint member in the axial direction and the second pipe joint support member is brought close to the coupling position, the grip extends while putting the hand of the operator holding the grip on the grip. A pipe coupling connecting device characterized in that it can be applied to the first pipe joint supporting member and applied with a gripping force to attract the second pipe joint supporting member to the first pipe joint supporting member. I will provide a.

In particular,
A holding means for holding the second pipe joint support member at a predetermined semi-connection position close to the connection position, and when the second pipe joint support member is brought close to the first pipe joint support member into the semi-connection position, The first pipe joint support member and the second pipe joint support member can be engaged with each other to have holding means for holding the second pipe joint support member with respect to the first pipe joint support member.

More specifically, this pipe joint connecting device is
A shank attached to the second pipe joint support member and protruding toward the first pipe joint support member;
A tubular member provided in the first pipe joint support member and having a receiving hole for receiving the shank;
An engagement member attached to the tubular member so as to be displaceable in a radial direction;
An engaging member pressing position that is displaceable in the axial direction of the cylindrical member on the outer peripheral surface of the cylindrical member, presses the engaging member radially inward and sets the engaging member to a protruding position in the receiving hole; An engaging member operating member that is displaceable between the protruding position and an engaging element releasing position that allows a predetermined distance outward in the radial direction;
Locking means is formed on the outer peripheral surface of the shank and receives an engagement element that is in a protruding position when the second pipe joint support member is in the coupling position, and fixes the shank to the tubular member in the axial direction. A first engaging recess for
The holding means is formed at a position closer to the tip side than the first engaging recess on the outer peripheral surface of the shank, and receives the engaging member that is the protruding position when the second pipe joint support member is in the semi-connected position, A second engaging recess for fixing the shank to the cylindrical member in the axial direction;
An operation pin attached to the second pipe joint support member so as to be displaceable in the axial direction, and is displaced toward the first pipe joint support member when the second pipe joint support member is in the coupling position. An operation pin for displacing the engagement member operation member from the fixed position to the fixed release position,
A stopper that is attached to the first pipe joint support member and engages with the engagement member operation member displaced to the fixed release position by the operation pin and stops the displacement;
The operation pin can be set so that the operator can operate with the hand while holding the grip.

As described above, in the pipe joint connecting device according to the present invention having the holding means that can hold the second pipe joint support member with respect to the first pipe joint support member at the semi-connect position, as described above, for example, When a toggle means or the like for moving the second pipe joint support member from the connection position to the connection position is provided, the operator places the second pipe joint support member in the semi-connection position and then holds the second pipe joint support member. By releasing the hand from the pipe joint support member, it is possible to prepare for the final connection operation by the toggle means to be performed next, and it is easy to perform the connection operation while ensuring safety.
Further, in the pipe joint coupling device in which the second pipe joint support member is provided with the grip as described above, the operator puts the hand on the grip and the first pipe joint support member and holds the second pipe joint support member by the gripping force. It can be connected to the one pipe joint support member, and the connecting operation can be performed safely even in a place where the scaffold is slippery.
Further, in the case where the operation pin as described above is provided on the second pipe joint support member, the first pipe of the second pipe joint support member can be obtained simply by pushing the operation pin while the operator holds the grip. The connection with the joint support member can be released, and also in this case, the connection release operation can be safely performed in a place where the scaffold is slippery.

  Hereinafter, an embodiment of a pipe joint connecting device according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a pipe joint connecting device 10 according to the present invention, which includes a first pipe joint support member 14 that supports a male first pipe joint member 12, and a male type pipe joint connecting device 10. And a second pipe joint support member 18 that supports a female second pipe joint member 16 that is fitted and connected to the first pipe joint member 12.

  The first pipe joint support member 14 is fixed to, for example, a resin molding die (not shown), and the first pipe joint member 12 is connected to cooling pipes provided in a large number on the mold. In the figure, only one male first pipe joint member 12 is shown, but the number corresponding to the number of cooling pipes is provided.

  The female second pipe joint member 16 of the second pipe joint support member 18 is connected to a supply conduit or a discharge conduit (not shown) from the cooling medium supply source. The member 18 supports a number of female second fitting members 16 corresponding to the number of supply conduits or discharge conduits. The second pipe joint support member 18 is also provided with a grip 20, and an operator grips the grip 20 and brings the second pipe joint support member 18 close to the first pipe joint support member 14. By setting the connection position (FIG. 3), the second pipe joint member 16 of the second pipe joint support member 18 is fitted and connected to the first pipe joint member 12 of the first pipe joint support member 14, and the first The second pipe joint member 16 can be disconnected from the first pipe joint member 12 by being separated from the first pipe joint support member 14.

  Furthermore, the pipe joint connecting device 10 according to the present invention has a locking means 22 for locking the second pipe joint support member 18 to the first pipe joint support member 14 at the connection position (FIG. 3). In the illustrated example, the lock means 22 is attached to the second pipe joint support member 18 and protrudes toward the first pipe joint support member 14, and is provided on the first pipe joint support member 14. A cylindrical member 28 having a receiving hole 26 for receiving the ball, a ball-shaped engagement element 30 attached to the cylindrical member 28 so as to be displaceable in the radial direction, and the cylindrical member on the outer peripheral surface of the cylindrical member 28 28, which is displaceable in the axial direction of the actuator 28, presses the engaging element 30 inward in the radial direction, and makes the engaging element 30 protrude into the receiving hole (FIG. 3), and the engaging element 30 protrudes. A cylindrical engagement member operating member 32 that is displaceable between an engagement element release position (FIG. 2) that allows a predetermined distance to be displaced radially outward from the position, and the engagement element operation member 32. Engagement element pressing from the joint opening position (Fig. 2) When the second pipe joint support member 18 is brought into the coupling position (FIG. 3) on the outer peripheral surface 24-1 of the shank 24. A first engaging recess (annular groove shape in the illustrated example) 36 for receiving the engaging element 30 in the protruding position and fixing the shank 24 in the axial direction is formed. Specifically, the cylindrical engaging member operating member 32 is seen from the inner wall surface of the right end opening portion (ie, when the engaging member operating member 32 is at the engaging element open position (FIG. 2)). The inner wall surface 32-1 that opens the engagement element 30 has a larger diameter than the inner wall surface 32-2 that engages with the engagement element 30 when the engagement element operating member is at the engagement element pressing position (FIG. 3). An inclined inner wall surface 32-3 is formed between the inner wall surfaces 32-1 and 32-2. Further, the engaging element operating member 32 is provided with a second ball-shaped engaging element 37 at a position on the right side of the engaging element 30 (as viewed in the figure) so as to be displaceable in the radial direction. The shank 24 is provided with a second engaging recess 38 near the tip.

  That is, in this locking means, when the second pipe joint support member 18 is changed from the connection release position of FIG. 1 to the connection position of FIG. 3, the shank 24 is aligned with the receiving hole 26 in the radial direction while By moving the two pipe joint support member 18 toward the first pipe joint support member 14, the shank 24 enters the receiving hole 26. First, the tapered tip end surface 24-2 of the shank 24 is second. Is engaged with the engagement element 37 and pressed outward in the radial direction. At this time, the second engaging element 37 is engaged with the inclined inner wall surface 32-3 of the engaging element operating member 32, and is pressed outward in the radial direction, thereby moving the engaging element operating member 32 (in the drawing). (See) Displace to the left while moving to the left. As a result, the shank 24 passes through the engagement element 37 and advances in the receiving hole 26, and the tip end surface 24-2 of the shank 24 engages with the engagement element 30 and presses outward in the radial direction. The engaging member operating member 32 is further displaced leftward by engaging with the inclined inner wall surface 32-3, and is displaced radially outward. When the second engagement recess 38 is aligned with the engagement elements 30 and 37 in the axial direction, the engagement elements 30 and 37 can be engaged with the second engagement recess 38, thereby the engagement element operating member 32. Is displaced to the right (as viewed in the figure) by the urging force of the coil spring 34, resulting in a semi-connected state shown in FIG. By the engagement of the second engagement element 37 and the second engagement recess 38, the second pipe joint support member is held with respect to the first pipe joint support member. As shown in the figure, the grip 20 is bent toward the first pipe joint support member side, and as shown in FIG. 5, the operator extends the hand holding the grip 20 so that the fingertip is moved to the first pipe. The side surface 38-1 on the side away from the tip of the shank 24 of the second engagement recess 38 is gently inclined in the direction away from the tip. It is supposed to be. Therefore, in this state, if the operator pulls the grip 20 toward the first pipe joint support member by gripping force while putting the hand on the grip 20 and the first pipe joint support member 14, the second pipe joint support member 18. Is made to approach toward the first pipe joint support member 14, the second engagement element 37 engaged in the second engagement recess 38 is moved in the radial direction by the inclined side surface 38-1. While pressing the inclined inner wall surface 32-3 of the engaging member operating member 32 that is pressed outward and engaged at that time, the engaging member operating member 32 is displaced leftward (as viewed in the figure) Displace radially outward. As a result, the shank 24 (and hence the second pipe joint support member 18) further proceeds to the left, and when the engagement element 30 is axially aligned with the first engagement recess 36, the engagement element 30 is moved to the first engagement recess 36. Thus, the engagement operation member 32 is moved to the right by the coil spring 34 to reach the connection position shown in FIG. In this way, the second pipe joint support member 18 and the first pipe joint support member 14 are connected (locked).

  On the other hand, the second pipe joint support member 18 is provided with an operation pin 40 that can be displaced in the left-right direction in the drawing, and a cylindrical holding member 42 that holds the operation pin 40 so as to be displaceable. The operation pin 40 is in a retracted position as shown in FIG. 1 by a coil spring 44 provided in the cylindrical holding member. That is, when the second pipe joint support member 18 is in the connecting position shown in FIG. 3, the operation pin 40 pushes the operation pin 40 to the left while holding the grip 20. The distal end of the operation pin 40 engages with the engagement element operation member 32 and is displaced to the left, whereby the engagement element operation member 32 is moved from the coupling position in FIG. 3 to the release position in FIG. Therefore, the engaging elements 30 and 37 are displaceable radially outward, and the locking state of the locking means 22 is released. In this state, when the operator moves the second pipe joint support member 18 to the right, the shank 24 is pulled out from the receiving hole 26, and the second pipe joint support member 18 is connected to the first pipe joint support member 14. It will be released. In the illustrated example, the first pipe joint member 12 and the second pipe joint member 16 are provided with on-off valves 46 and 48, respectively, and the second pipe joint support member 18 is connected to the first pipe joint support member 14. It is designed to be opened at the time of completion (FIG. 3) and closed before the uncoupling is completed (FIG. 7).

  In the illustrated example, the stopper 50 is fixed to the left end position (as viewed in the figure) of the cylindrical member 28, and the engaging member operating member 32 is engaged with the stopper 50 when the operating pin 40 is set to the release position. It has come to be stopped. That is, when the operator pushes the operation pin 40 and further pushes the operation pin in a state where the engaging member operation member 32 is set to the release position, the second pipe joint support member 18 is relatively moved with respect to the operation pin 40. As a result, the shank 24 is pulled out from the receiving hole 26, and the second pipe joint support member 18 is pulled away from the first pipe joint support member 14.

  FIG. 8 shows the pipe joint coupling device 10 shown in FIGS. 1 to 7 provided with toggle means 52 for attracting the second pipe joint support member 18 to the first pipe joint support member 14. Yes. That is, the toggle means 52 includes a hook member 54 that is detachably fixed to the first pipe joint support member 14, a lever 58 that is rotatable about the pivot 56 on the second pipe joint support member 18, and A hook member 60 is pivotally attached to the lever 58 and is engageable with the hook member 54. The second pipe joint support member 18 is brought close to the first pipe joint support member 14 to engage with the engagement element. When the second pipe joint support member 18 is held with respect to the first pipe joint support member 14 by engaging the engaging recess 38 with the engagement recess 38, the operator holds the hook member 60 on the hook 54. In this state, the lever 58 is rotated so that the hooking member 60 is pulled away from the hook member 54, whereby the second pipe joint support member 18 is moved relative to the first pipe joint support member 14. To be able to attract It's that. The toggle means 52 has a high fluid pressure inside the pipe joint and requires a large force to open the valve. The toggle pipe 52 can be used to connect the second pipe joint support member 18 to the first pipe joint support member 14 only with the gripping force of the operator. Used when not attracted to.

It is sectional drawing which shows the state from which the 1st pipe joint support member and 2nd pipe joint support member of the pipe joint connection apparatus which concern on this invention are isolate | separated. It is sectional drawing which shows the case where an engagement member operation member exists in an open state in the connection operation process of the pipe joint connection device. It is sectional drawing which shows the state which the connection of the pipe joint connection device was completed and was locked. It is sectional drawing which shows the semi-connection state of the pipe joint connection apparatus. It is sectional drawing which shows connection operation by the grip force of the operator of the pipe joint connection apparatus. It is sectional drawing which shows the state by which the lock | rock means was cancelled | released in the process of the connection cancellation | release of the pipe joint connection apparatus. It is sectional drawing which shows the state which the connection of the pipe joint connection device was cancelled | released and the on-off valve with which the pipe joint was equipped closed. It is a fragmentary sectional view which shows the state which provided the toggle means in the same pipe joint coupling device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Pipe joint connection device 12 1st pipe joint member 14 1st pipe joint support member 16 2nd pipe joint member 18 2nd pipe joint support member 20 Grip 22 Locking means 24 Shank 24-1 Outer peripheral surface 24-2 Tapered tip surface 26 receiving hole 28 cylindrical member 30 engagement element 32 engagement element operation member 32-1 inner wall surface 32-2 inner wall surface 32-3 inclined inner wall surface 34 coil spring 36 first engagement recess 37 second engagement element 38 second Engaging recess 38-1 inclined side surface 40 operation pin 42 cylindrical holding member 44 coil spring 46 on-off valve 48 on-off valve 50 stopper 52 toggle means 54 hook member 56 pivot 58 lever 60 hooking member

Claims (6)

A first pipe joint support member that supports the first pipe joint member;
A second pipe joint member fitted and connected to the first pipe joint member and a grip for gripping are provided, and the first pipe joint member is brought into a predetermined connection position close to the first pipe joint support member. The two pipe joint members are fitted and connected to the first pipe joint member, and the second pipe joint member is released from the first pipe joint member by being separated from the first pipe joint support member. A second pipe joint support member made of
Locking means for locking the second pipe joint support member to the first pipe joint support member at the connection position;
Holding means for holding the second pipe joint support member at a predetermined semi-connection position close to the connection position, the second pipe joint support member being brought close to the first pipe joint support member and the semi-connection position; And holding means for engaging the first pipe joint support member and the second pipe joint support member to hold the second pipe joint support member against the first pipe joint support member. A pipe joint connecting device. A shank attached to the second fitting support member and projecting toward the first fitting support member;
A tubular member provided on the first pipe joint support member and having a receiving hole for receiving the shank;
An engagement member attached to the tubular member so as to be displaceable in a radial direction;
An engagement element that is displaceable in the axial direction of the tubular member on the outer peripheral surface of the tubular member and presses the engagement element inward in the radial direction so that the engagement element protrudes into the receiving hole. An engaging member operating member that is displaceable between a pressing position and an engaging member releasing position that allows a predetermined distance to be displaced radially outward from the protruding position;
The locking means is formed on the outer peripheral surface of the shank, and receives the engaging member that is in the projecting position when the second pipe joint support member is in the connecting position, and causes the shank to move in the axial direction. Having a first engaging recess for fixing;
The holding means is formed at a position on the distal end side of the outer peripheral surface of the shank with respect to the first engaging recess, and is set to the protruding position when the second pipe joint support member is set to the semi-connected position. The pipe coupling coupling device according to claim 1, further comprising a second engagement recess for receiving the engagement element and fixing the shank in the axial direction. A first toggle member attached to the first pipe joint support member;
A second toggle member that is attached to the second pipe joint support member and is engageable with the first toggle member when the second pipe joint support member is in the semi-connected position;
An attracting member that attracts the second toggle member to the first toggle member and uses the second pipe joint support member as the coupling position;
A toggle means having
When the second toggle member is attracted to the first toggle member by the attraction member, the second engagement recess displaces the engagement element outward in the radial direction, and the axial direction of the shank The pipe joint connecting device according to claim 1 or 2, wherein the pipe joint connecting device is configured to have a side wall for releasing the fixing. A first pipe joint support member that supports the first pipe joint member;
A second pipe joint member fitted and connected to the first pipe joint member and a grip for gripping are provided, and the first pipe joint member is brought into a predetermined connection position close to the first pipe joint support member. The two pipe joint members are fitted and connected to the first pipe joint member, and the second pipe joint member is released from the first pipe joint member by being separated from the first pipe joint support member. A second pipe joint support member made of
Locking means for locking the second pipe joint support member to the first pipe joint support member at the coupling position;
Have
In the state where the second pipe joint member is aligned with the first pipe joint member in the axial direction, and the second pipe joint support member is brought close to the coupling position, the grip is held by the operator's hand holding it. It is made possible to apply a force for pulling the second pipe joint support member to the first pipe joint support member by gripping force by extending it while applying it to the grip and applying it to the first pipe joint support member. A pipe joint coupling device characterized by that.   Holding means for holding the second pipe joint support member at a predetermined semi-connection position close to the connection position, the second pipe joint support member being brought close to the first pipe joint support member and the semi-connection position; 5. A holding means for engaging the first pipe joint support member and the second pipe joint support member and holding the second pipe joint support member with respect to the first pipe joint support member. The pipe joint coupling device according to 1. A shank attached to the second fitting support member and projecting toward the first fitting support member;
A tubular member provided on the first pipe joint support member and having a receiving hole for receiving the shank;
An engagement member attached to the tubular member so as to be displaceable in a radial direction;
An engagement element that is displaceable in the axial direction of the tubular member on the outer peripheral surface of the tubular member and presses the engagement element inward in the radial direction so that the engagement element protrudes into the receiving hole. An engaging member operating member that is displaceable between a pressing position and an engaging member releasing position that allows a predetermined distance to be displaced radially outward from the protruding position;
The locking means is formed on the outer peripheral surface of the shank, and receives the engaging member that is in the projecting position when the second pipe joint support member is in the connecting position, and causes the shank to move in the axial direction. Having a first engaging recess for fixing;
The holding means is formed at a position on the distal end side of the outer peripheral surface of the shank with respect to the first engaging recess, and is set to the protruding position when the second pipe joint support member is set to the semi-connected position. A second engagement recess for receiving the engagement element and fixing the shank in the axial direction;
An operation pin attached to the second pipe joint support member so as to be displaceable in the axial direction, and is displaced toward the first pipe joint support member when the second pipe joint support member is in the coupling position. An operation pin for displacing the engaging member operating member from the fixed position to the fixed release position,
A stopper attached to the first pipe joint support member and engaged with the engagement member operation member displaced to the fixed release position by the operation pin to stop the displacement;
The pipe coupling coupling device according to claim 1 or 5, wherein the operation pin is set so that an operator can operate it with a hand while holding the grip.

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