JPS6146307Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a valve, particularly an opening/closing operation device for a butterfly valve, a ball valve, etc., which is opened and closed by rotating an operating shaft through approximately 90 degrees.

Conventionally, valves have been opened and closed by a grip attached to the operating shaft of the valve or by a handle operator directly operating the handle. Therefore, especially if the valve is installed at a high place, the worker must go to each valve one by one, which requires extra labor and poses the risk of the worker falling. was.

Therefore, the purpose of this invention is to enable the opening and closing operations of valves installed at high places to be performed at low places, thereby reducing the labor of workers involved in opening and closing operations and eliminating the risk of workers falling. The object of the present invention is to provide an opening/closing operation device that can perform the following functions.

In order to achieve this goal, this idea
An operating arm is attached to the operating shaft of the valve located at a high location, a rotating shaft is rotatably supported on a support board located at a low location, and an operating lever is attached to one end of the rotating shaft. At the same time, attach the center part of the rotating arm to the other end, connect one end of the opening side connecting wire and the closing side connecting wire to both ends of the rotating arm, and connect the other end of both connecting wires. The operating shaft of the valve is connected to the distal end of the operating arm and is configured to be rotated to open and close in conjunction with forward and reverse rotating operations of the operating lever, and both ends of the connecting wires are connected to the tip of the operating arm. Connected to each arm such that the length L2 from the axis of the driving shaft to the wire attachment site of the rotating arm is longer than the length L1 from the axis of the operation shaft to the wire attachment site of the operation arm. This is the gist of the composition.

According to the above configuration, the connecting wire is interlocked via the rotary arm by rotating the rotary shaft using the operating lever located at a low place, and the connecting wire is interlocked with this interlocking wire to operate the valve at a high place. The valve is opened and closed by rotating the operating shaft via the operating arm.

Also, the length L2 from the axis of the rotation shaft to the wire attachment part of the rotation arm is the length L1 from the axis of the valve operating shaft to the wire attachment part of the operation arm.
Since it is longer than the above, the rotational force and amount of rotation of the operating lever required to open and close the valve can be reduced.

An embodiment of this invention will be described below with reference to FIG. A valve 1 is installed in a pipe 2 installed at a high place. An operating arm 4 is attached to the operating shaft 3 of the valve 1 in place of a normal grip or handle. The figure shows the valve 1 in the closed state, and by rotating the operating arm 4 approximately 90 degrees clockwise as shown by the two-dot chain line in the figure, the valve 1 is brought into the open state. On the other hand, a rotation shaft 7 is rotatably supported by columns 6 to 6 on a support plate 5 disposed at a low place below the valve 1. The lower end of the operating lever 8 is attached to the right end of the rotation shaft 7, and the center portion of the rotation arm 9 is attached to the left end of the rotation shaft 7. Front and rear adjusting bolts 10 and 11 are screwed into both ends of the rotating arm 9, respectively. The lower end of the open side connecting wire 12 is connected to the ring 10a at the upper end of the front adjusting bolt 10, while the rear adjusting bolt 11
A closing side connecting wire 1 is attached to the ring part 11a at the upper end of the
The lower ends of 3 are connected. The upper ends of both connecting wires 12 and 13 are connected to the tip of the operating arm 4. In addition, the connecting wires 12, 13
are hung on an opening-side guide roller 14 and a closing-side guide roller 15, which are rotatably provided on the wall or ceiling of the factory on the right and left sides of the valve 1, respectively. Further, both the connecting wires 12,
As shown in FIG. It is connected to each arm 4, 9 so as to be longer than the length L1 to the wire attachment site. In this example, the lengths L1 and L2 are set to the extent that L1:L2=1:approximately 1.5 to 3. Therefore, compared to the case where the lengths L1 and L2 are 1:1, the rotational force and amount of rotation of the operating lever 8 required to open and close the valve 1 can be reduced.

The operating arm 4, the rotating arm 9, the operating lever 8, and the rotating shaft 7 are each set to appropriate lengths that provide good operability. In addition, both connecting wires 12, 1
The tension of No. 3 is adjusted by screwing the adjusting bolts 10 and 11 forward and backward.

In the valve opening/closing operation device described above, the first
To change the state from the closed state shown in the figure to the open state, the operating lever 8 is rotated in the forward direction (in the direction of arrow A in the figure). Then, the rotating arm 9 is rotated in the normal direction via the rotating shaft 7, and as the opening side connecting wire 12 is pulled downward, the operating arm 4 is rotated clockwise, and the valve 1 is rotated clockwise. is in an open state. At this time, the closing wire 13 moves upward as the operating arm 4 and the rotating arm 9 rotate.

Further, in order to change the state from the open state described above to the closed state, the operating lever 8 is rotated backwards in the reverse direction.
Then, the rotating arm 9 is rotated in the reverse direction via the rotating shaft 7, and as the closing side connecting wire 13 is pulled downward, the operating arm 4 is rotated counterclockwise, and the valve is closed. 1 is considered to be a closed state. Note that, at this time, the open-side wire 12 moves upward as the operating arm 4 and the rotating arm 9 rotate.

As shown in FIG. 2, a plurality of rotating shafts 7 having operating levers 8 and rotating arms 9 are disposed on the support plate 5 in the same way as in the above embodiment, and each rotating arm 9 to 9 Each operating arm attached to each operating shaft of a plurality of valves (not shown) is connected to a connecting wire 12,1.
3, it is possible to centrally manage multiple valves.

That is, according to this invention, by rotating the rotation shaft using the operating lever located at a low place,
A connecting wire is interlocked via the rotating arm, and the operating shaft of the high-placed valve is rotated via the operating arm in conjunction with the interlocking wire, thereby opening and closing the valve. Opening/closing operations of a valve installed at a high place can be performed at a low place, reducing the labor of the worker involved in the opening/closing operation, and eliminating the risk of the worker falling.
In addition, since the length L2 from the axis of the rotation shaft to the wire attachment part of the rotation arm is longer than the length L1 from the axis of the valve operation shaft to the wire attachment part of the operation arm, the valve A unique effect is that the rotational force and amount of rotation of the operating lever required for opening and closing are small.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
FIG. 2 is a perspective view of a valve opening/closing operating device, FIG. 2 is a perspective view showing an example of application of the operating section, and FIG. 3 is a schematic diagram illustrating the attachment position of a connecting wire to each arm. 1... Valve, 3... Operating shaft, 4... Operating arm, 5... Support plate, 7... Rotating shaft, 8... Operating lever, 9... Rotating arm, 12... Opening side connection wire , 13...Closing side connection wire.

Claims (1)

[Scope of utility model registration request] An operating arm is attached to the operating shaft of the valve located at a high location, a rotating shaft is rotatably supported on a support board located at a low location, and an operating lever is attached to one end of the rotating shaft. At the same time, attach the center part of the rotating arm to the other end, connect one end of the opening side connecting wire and the closing side connecting wire to both ends of the rotating arm, and connect the other end of both connecting wires. The operating shaft of the valve is connected to the distal end of the operating arm and is configured to be rotated to open and close in conjunction with forward and reverse rotating operations of the operating lever, and both ends of the connecting wires are connected to the tip of the operating arm. Connected to each arm such that the length L2 from the axis of the driving shaft to the wire attachment site of the rotating arm is longer than the length L1 from the axis of the operation shaft to the wire attachment site of the operation arm. A valve opening/closing operation device characterized by: