JP2982005B2 - Cable lock device for on-off valve - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock mechanism for an on-off valve attached to a pipe of a plant, a fire extinguishing system or the like. More specifically, the operating state of this type of on-off valve (fully closed,
The present invention relates to a lock mechanism of an on-off valve for confirming whether an arbitrary set angle is opened or fully opened, and fixing the operating state.

[0002]

2. Description of the Related Art Japanese Unexamined Utility Model Publication No. 56-149178 entitled "Valve Locking Apparatus" is known as a lock mechanism for this type of on-off valve. The publication discloses the use of a special half-cylinder cover that covers the operation handle of a valve (open / close valve).
This locks the operation handle. Because a specially shaped cover body is used, a cover body with a shape corresponding to the operation handle of each valve (open / close valve),
That is, it is necessary to specify the lock device for each valve (open / close valve), and there is a problem of lack of versatility. According to the above-mentioned publication, as a conventional technique, an operation handle 102 of a valve (open / close valve) 101 and a valve (open / close valve) as shown in FIG.
A lock mechanism of an on-off valve that locks a chain 103 wound between the open-close valve 101 and a padlock (cylinder lock) 104 is disclosed. By selecting the length of the chain 103 and selecting the lock position of the chain 103, it can be applied to most valve operating handles and has general versatility, but the position where the padlock is inserted into the chain is the size of the chain ring. Therefore, it is difficult to completely fix the operation handle 102 and the chain 103 and the operation handle 102 is allowed to rotate within a certain range, and the operation state of the predetermined on-off valve (fully closed, arbitrary There is a problem that it is impossible to maintain the set angle (open, full open, etc.).

[0003]

The present invention relates to a cable lock system having a valve lock mechanism having high versatility as in the case of the chain lock system, and having any operating state (fully closed, open at any set angle, It is an object of the present invention to securely fix (prevent the fine movement of the operation handle) and to easily confirm the operation state by fully opening or the like.

[0004]

According to the present invention, one end of a cable 2 is fixed at one end and a through hole 5 through which the other end of the cable 2 can freely pass is provided. A tubular lock body 1 having a lock pin insertion hole 10 formed in the axial direction from the other end is provided, and a cable passing through the through hole 5 of the lock body 1 is inserted into the lock pin insertion hole 10 of the lock body. Lock pin 3 having locking hole 31 for stopping
Is inserted into the lock pin insertion hole 10 of the lock body, and the pressing body that is movable in the axial direction is further positioned on the outer side,
The coin lock 6 is inserted, the coin lock 6 is fixed to the lock body, and the turning shaft of the coin lock and the screw hole of the pressing body are screwed.

[0005]

The pressing body is turned by the rotation of the rotation axis of the coin lock lock by the rotation operation of the coin lock lock to the locking position.
Then, the lock pin 3 is moved to the lock position where the cable 2 is locked and fixed by the locking hole 31, and both ends of the cable are fixed to the lock body to be in the locked state at the predetermined locking position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to FIGS. Reference numeral 1 denotes a cylindrical lock body having an attachment hole 4 at one end for fixing one end of the cable 2 and a through hole 5 through which the other end of the cable can freely pass. A lock pin insertion hole 10 is formed at the other end of the lock body 1 in the axial direction of the lock body 1 (that is, the direction intersecting with the through hole 5). The tip of the lock pin insertion hole 10 passes through the through hole 5, and the tip is located between the mounting hole 4 and the through hole 5. A screw hole 13 is formed at an eccentric position (a position eccentric with respect to the shaft center point O with reference to b of FIG. 2) from the end surface of the lock body 1 on the side of the mounting hole 4 toward the through hole 5, and a screw is formed. One end of the cable 2 inserted into the mounting hole 4 is fixed by a screw 8 passing through the hole 13.

As the cable 2, a vinyl cable in which a stranded stainless steel wire is coated with a soft synthetic resin such as vinyl is used. Any suitable material having a proven track record in durability, weather resistance, heat resistance and the like can be used. Reference numeral 3 denotes a lock pin, which is formed into a shape that fits into the lock pin insertion hole 10 of the lock body 1 and can be inserted into the lock pin insertion hole 10. The lock pin 3 passes through a locking hole 31 through which the cable 2 that passes through the through hole 5 of the lock body 1 penetrates. The locking hole 31 has a shape having a dish-shaped enlarged portion 31a at both ends. By forming the dish-shaped enlarged portions 31a at both ends, the locking pin 3 can be locked even if the end 2b of the cable 2 is inserted into the through hole 5 of the lock body 1 in any of the upper and lower through holes 5. The cable can be passed through the hole 31. That is, the vertical insertion direction of the end 2b of the cable 2 into the through hole 5 of the lock body 1 is arbitrary.

A spring pin fixing hole 14 is formed at an eccentric position similar to the screw hole 13 (extended position of the screw hole 13) in a wall portion 16 between the through hole 4 and the tip of the lock pin insertion hole 10 in the lock body 1. I do. The distal end of the spring pin 15 passing through the spring pin fixing hole 14 is
The lock pin 3 is prevented from rotating by engaging with the positioning pin hole 34 formed in the lock body 1, and the lock hole 31 is held in a straight line with the through hole 5 of the lock body 1. As shown in FIG. 3, when the hexagon socket set screw 9 is mounted on the wall 16 and one end of the cable 2 inserted into the mounting hole 4 is fixed by the hexagon socket set screw 9, the hexagon socket set screw 9 Is projected from the wall portion 16 toward the lock pin insertion hole side, and the lock pin 3 is located at a position facing the hexagon socket set screw 9 and is slightly larger than the head of the hexagon socket set screw 9. The rotation of the lock pin 3 can be prevented by forming the hole 34 and engaging the hole 34 with the head of the hexagon socket set screw 9.

In the lock pin insertion hole 10 of the lock body 1,
The pressing body 7 is inserted to be movable in the axial direction toward the lock pin 3. Further, the coin lock 6 is inserted into the lock pin insertion hole 10 on the opening side of the lock pin insertion hole 10. The rotating shaft 61 of the coin lock 6 and the screw hole 71 of the pressing body 7 are screwed together.

A screw 11 for screwing with the screw 62 on the peripheral surface of the coin lock 6 is formed in the lock pin insertion hole 10, and the coin lock 6 is screwed into the lock pin insertion hole 10 and fixed. Further, the lock screw hole 12 is connected to the lock body 1.
And a lock pin 6 penetrating through the lock screw hole 12.
By fixing the coin lock 6 to the lock body 1 by 3, the axial movement and rotation of the coin lock 6 are completely prevented. Notch 72 that engages with stopper 64 for locking formed on the back surface of commercially available coin lock 6
Is formed on a part of the peripheral surface of the pressing body 7 on the coin lock side, so that the notch 72 of the pressing body 7 engages with the stopper 64 of the coin lock 6, thereby rotating the rotation shaft 61. At this time, the rotation of the pressing body 7 is prevented, so that the pressing body 7 can be moved only in the axial direction.

Next, the locking operation of the on-off valve according to the present invention will be described. The one end 2 a is attached to the mounting hole 4 of the lock body 1.
After the cable 2 fixed by screws 8 (screws 9) is wound between the operation handle of the on-off valve and a fixing member such as a pipe or a tank, the other end 2b of the cable 2 is inserted into the through hole 5. The total length of the cable 2 is set to a dimension that reliably maintains the operation handle of the on-off valve in an arbitrary operating state (fully closed, opened at an arbitrary set angle, fully opened, etc.). At this time, the lock hole 31 of the lock pin 3 is set at a position corresponding to the lock pin insertion hole 10 of the lock body 1, and the other end 2 b of the cable 2 inserted into the lock pin insertion hole 10 of the lock body 1 is connected to the lock pin 3. The lock hole 31 is made to penetrate (see FIG. 4).

The pivot shaft 61 of the coin lock 6 is rotated by rotating the key of the coin lock 6 (by rotating the key inserted into the key groove of the coin lock 6 to the locking position). . Since the rotation of the rotation shaft 61 prevents the pressing body 7 from being rotated by the notch 72 that is locked to the stopper 64, the pressing body 7 advances toward the lock pin 3 and presses the lock pin 3. As a result, the lock pin 3 moves to the cable 2 side, and the state shown in FIG. 5 is obtained. The cable 2 is deformed by the protrusion 33 of the lock pin 3, and the state in which the cable 2 is fixed to the lock body 1 is reliably maintained. . That is, the lock pin 3 is moved to the lock position where the cable 2 is locked and fixed by the lock hole 31. Thus, both ends of the cable 2 are fixed by the lock body 1 and the lock pin 3 to be locked at a predetermined locking position.

After that, the key (not shown) of the coin lock 6 is removed and stored in a management room or the like so that the operating state of the on-off valve (fully closed, open at an arbitrary set angle, fully open, etc.) can be determined by the administrator. Can be reliably confirmed, and the operation of the on-off valve due to mischief or erroneous operation is prevented.

[0014]

According to the present invention, since the total length of the cable 2 can be set to an appropriate length, fine movement of the operation handle is prevented, and the on-off valve is operated in a predetermined operating state (fully closed, opened at an arbitrary set angle, fully opened). Etc.) can be maintained. In addition, by managing the keys of the cylinder lock, it is possible to confirm a predetermined operating state of the on-off valve and to prevent operation of the on-off valve due to mischief or erroneous operation. Since the mass production of the cable 2 and the coin lock can be used, the present invention can be commercialized by manufacturing only the lock body and the lock pin, so that the manufacturing cost is low. The coin lock is
The lock lock can be downsized by being installed almost in the lock pin insertion hole 10 of the lock body 1, and the lock lock can be integrated with the lock body 1 to prevent the lock lock from being lost.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a cable lock device for an on-off valve according to an embodiment of the present invention in a locked state.

2A and 2B show a lock main body, wherein FIG. 2A is a longitudinal sectional view, and FIG.

3A and 3B show a second embodiment of the lock body, wherein FIG. 3A is a longitudinal sectional view and FIG. 3B is a right side view.

FIG. 4 is a longitudinal sectional view showing the cable lock device of the on-off valve in a locked state.

FIG. 5 is a front view showing the coin lock.

FIG. 6 is a perspective view of a conventional locking device for an on-off valve of a hollow type;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Lock body 2 ... Cable 3 ... Lock pin 4 ... Mounting hole 5 ... Through hole 6 ... Coin lock lock 7 ... Press body 10 ... Lock pin insertion hole

Claims (1)

(57) [Claims] An end of a cable is fixed to one end of the cable, and a through-hole for allowing the other end of the cable to pass therethrough is provided. A lock pin having a cylindrical lock body 1 formed in the axial direction and having a lock hole 31 in the lock pin insertion hole 10 of the lock body for locking a cable passing through the through hole 5 of the lock body 1. 3, a pressing member 7 having a screw hole to be screwed with the rotation shaft of the coin lock, and being movable in the axial direction within the lock pin insertion hole 10 of the lock body. A coin lock lock 6 which can be inserted into the insertion hole 10 is provided, and the lock pin 3 is inserted into the lock pin insertion hole 10 of the lock body 1.
Then, the pressing body 7 is inserted, the coin lock 6 is further inserted, and the pressing body 7 is movable in the axial direction, and the coin lock 6 is fixed to the lock body 1. The pressing body 7 is advanced to the lock pin 3 side by the rotation of the rotation shaft by the rotation operation to the locking position of the lock lock, and the lock pin 3 is moved to the lock position where the cable 2 is locked and fixed by the locking hole 31. A cable lock device for an on-off valve, characterized in that both ends of the cable are fixed to the lock body.