JP2982004B2 - 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. The above-mentioned publication discloses, as a prior art, an operation handle 12 of a valve (open / close valve) 11 and a valve (open / close valve) 11 as shown in FIG.
Between the chain 13 and a padlock (cylinder lock) 14
Discloses a lock mechanism of an on-off valve to be locked. By selecting the length of the chain 13 and selecting the lock position of the chain 13, it can be applied to most valve operating handles and has general versatility. However, the operation handle 12 and the chain 13 must be completely fixed. Is difficult and the operation handle 12 is allowed to rotate within a certain range, and it is impossible to maintain a predetermined operating state of the on-off valve (fully closed, opened at an arbitrary set angle, fully opened, etc.). There is a point.

[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, a pin is fixed to one end of a cable, and the other end of the cable is inserted into the through hole so as to be freely inserted into the through hole, and a pin hole intersecting the through hole is formed in the axial direction from the other end. A lock hole is provided which is freely insertable into a lock pin insertion hole of the lock body, penetrates a cable passing through the through hole of the lock body, and penetrates in parallel with the lock hole. A lock pin having a lock hole is provided, and a lock hole is formed at a position opposite to the lock hole of the lock pin in a state where the lock hole of the lock pin is in a lock position at the other end of the lock body. By inserting the long rod of the cylinder lock into the lock hole of the pin and the lock hole of the lock body, both ends of the cable are fixed to the lock body through the lock pin fixed at the lock position, and the cable is effective. Set length Fixed.

[0005]

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, which has a mounting 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, and forms a screw hole 8 in the axial direction. After inserting one end of the cable 2 into the mounting hole 4, the screw 10 is inserted into the screw hole 8, and the screw 10 is screwed into the screw portion 8 a of the screw hole 8, so that the tip of the screw 10 is One end of the cable 2 is made to protrude into the mounting hole 4 so that the tip of the screw 10 bites into the one end of the cable 2, and one end of the cable 2 is fixed to the lock body.
At the other end of the lock body 1, a lock hole 6 is formed, and a lock pin insertion hole 7 is formed in the axial direction.

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.
The lock body 1 is formed so as to fit into the lock pin insertion hole 7 and can be inserted into the lock pin insertion hole 7.
Hole 3 through which cable 2 penetrates through hole 5
1 and a locking hole 32 penetrating in parallel with the locking hole 31. The locking hole 31 facilitates insertion of the locking narrow portion 31 a formed by the projection 33 and the end of the cable 2. And an enlarged portion 31b. Lock hole 32
Is formed at a position facing the lock hole 6 of the lock body 1 in a state where the lock hole 31 of the lock pin 3 is in the lock position (FIG. 1).

The cylinder lock (padlock) 9 is a vine-type cylinder lock having a long rod 9a, but may be another type of cylinder lock having a long rod 9a as shown in FIG. The cross section of the long rod 9a is
It is necessary to select one that corresponds to the lock hole 32 of the lock pin 3 and in which the long rod 9a plays with the lock holes 6 and 32.

Next, the locking operation of the on-off valve according to the present invention will be described. After winding the cable 2 between the operation handle of the on-off valve and a fixing member such as a pipe or a tank, one end 2a of the cable 2 is fixed to the mounting hole 4 of the lock body 1 and the other end 2b of the cable 2 Is inserted into the through-hole 5 so that the entire length of the cable 2 is dimensioned to reliably maintain the operating 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 7 of the lock body 1, and the cable 2 inserted into the lock pin insertion hole 7 of the lock body 1 is
The other end 2b of the lock pin 3 penetrates the lock hole 31 of the lock pin 3 (see FIG. 3).

The long rod 9a of the cylinder lock 9 is passed through the lock hole 6 of the lock body 1 and the lock hole 32 of the lock pin 3, so that the lock hole 32 of the lock pin 3 and the long rod 9a are locked. When the rod 9a is pushed, the lock pin 3 moves to the cable 2 side, as shown in FIG. 1, and the cable 2 is deformed by the protrusion 33 of the lock pin 3 to securely fix the cable 2 to the lock body 1. maintain.

After that, the key (not shown) of the cylinder lock 9 is removed and stored in a control room or the like, so that the administrator can check the operating state of the on-off valve (fully closed, open at an arbitrary set angle, fully open, etc.). In addition to being able to reliably check, the operation of the on-off valve due to mischief or erroneous operation is prevented. In FIG. 1,
A lock pin 10a prevents the screw 10 from rotating at a fixed position.

The lock pin insertion hole 7 of the lock body 1
When the lock pin 3 is pressed outward by pressing a spring, the lock pin 3 automatically moves to the unlock position when the long rod 9a of the cylinder lock 9 is removed. 2b is released, and the other end 2b of the cable 2 can be easily pulled out.

[0013]

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 cable 2 and the cylinder lock can be mass-produced commercial products, the present invention can be commercialized by manufacturing only the lock body and the lock pin, so that the manufacturing cost is low.

[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.

FIG. 2 is an expanded longitudinal sectional view of a main part of the same.

FIG. 3 is a longitudinal sectional view showing a locked state.

FIG. 4 is a front view showing a bar lock type cylinder lock.

FIG. 5 is a perspective view of a lock device for a conventional 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 ... Lock hole 6 7 ... Lock pin insertion hole 7 9 ... Cylinder lock (padlock) 9a ... Long Rod

Claims (1)

(57) [Claims] 1. A cylindrical shape having a through hole through which one end of a cable is fixed at one end and the other end of the cable is freely penetrable, and a pin hole crossing the through hole is formed in the axial direction from the other end. A lock hole that is freely insertable into a lock pin insertion hole of the lock body, and that penetrates and locks a cable that passes through the through hole of the lock body; and a lock hole that penetrates in parallel with the lock hole. A lock hole is formed at the other end of the lock body in a state where the lock hole of the lock pin is in the lock position, and the lock hole is formed so as to face the lock hole of the lock pin. The long pin of the cylinder lock can be freely inserted into the hole and the lock hole of the lock body, and the long pin of the cylinder lock is inserted into the lock hole of the lock pin and the lock hole of the lock body so that the lock pin is in the lock position. Secure the cable Characterized by fixing the both ends by the lock body and the lock pin, the cable locking device of the on-off valve.