JPS5938513Y2 - Hydraulic water gate opening/closing device - Google Patents

Description

[Detailed description of the invention] In this invention, an upright hydraulic cylinder 2 is provided in the water gate 1, a door body 4 is connected to the lower end of the rod 3 of the cylinder 2, a hydraulic circuit 5 of the cylinder 2, an operation panel 6 and an opening gauge are installed. 7 are combined and connected to the cylinder 2, and an opening/closing valve 20 operated by raising and lowering a float 22 is interposed in the bypass pipe 18 between the pipes 15 and 16 to the piston upper and lower chambers of the cylinder 2, and the piston This invention relates to a hydraulic water gate opening/closing device in which an auxiliary tank 11 for replenishing insufficient oil in the lower chamber is connected to a conduit 15 leading to the lower chamber.

The hydraulic circuit 5, the operation panel 6, and the opening gauge 7 can be combined into one unit and fixed to the cylinder 2 in any direction with a mounting device 8, and can be installed in the remote control room 9.

The opening gauge 7' in the remote control room 9 can be operated by a signal from the opening gauge 7 provided in the cylinder 2.

In addition, what is indicated by 10 in the figure is the main tank in the hydraulic circuit 5,
12.13 is a hydraulic pump, 14 is a switching valve, 15 is a pipeline between the switching valve 14 and the piston lower chamber of the cylinder 2, 16 is a pipeline between the switching valve 14 and the piston upper chamber, 17.18 is both pipelines 15 and 16, 19 is a manual or electric check valve interposed in the bypass pipe 17, and 20 is a float valve (opening/closing valve) interposed in the other bypass pipe 18 at the set water level 21. It is opened by the floating float 22.

Further, 23 is a flow rate regulating valve provided in the pipe line 16, 24 is a bypass valve for controlling the lowering of the door body, 25 is an operating piece of the facing valve 24, and 26 is a lifting wire for operating the opening gauge provided on the door body 4.

Therefore, the switching valve 14 is moved to the left in FIG.
2, oil flows from pipe 16 to pilot check valve 27.
, enters the lower piston chamber through the flow rate adjustment valve 23 and raises the door body 4.

On the other hand, the hydraulic oil in the upper chamber of the piston passes through the pipe 15 to the switching valve 1.
4 flows into tank 10.

When the door body 4 is lowered, when the check valve 19 is opened manually or electrically, the hydraulic oil in the lower chamber of the piston passes through the pipe 16, passes through the bypass valve 24, passes through the opened check valve 19, and then flows from the pipe 15 above the piston. flows into the room.

In this case, the inner working oil in each of the upper and lower piston chambers is insufficient in the upper chamber due to the difference in volume of the rod 3 in the lower chamber, creating negative pressure and preventing the door body 4 from lowering under its own weight.

However, the oil in the sub tank 11 is sucked by the negative pressure and the negative pressure is released, so that the lowering of the vehicle's own weight is not hindered.

Valve 20 due to floating of float 22 at set water level 21
By automatically opening the door, the same door lowering operation as described above can be performed.

The opening gauge 7 is formed by connecting a rope 26 connected to the rod 3 to a weight via a digital display operating pulley 28, and the opening gauge 7' in the remote control room 9 is operated by an electric signal according to the display. can do.

Since the present invention is constructed as described above, compared to the conventional mechanical water gate opening/closing device, it can be formed extremely simply, improve mechanical efficiency, and reduce the required power to about % compared to the mechanical one described above. Not only can the raising and lowering speed of the door body 4 be increased several times to perform quick opening and closing operations, but also the device can be installed quickly and easily.

In addition, in the present invention, an on-off valve 20 is provided in the bypass pipe 18 by raising and lowering a float 22, and the pipe 15 to the lower piston chamber is closed.
Since the insufficient oil auxiliary tank 11 is connected to the lower chamber, the insufficient oil can be easily replenished from the auxiliary tank 11 to the same lower chamber by the negative pressure in the same lower chamber, and the above-mentioned valve 20 can be automatically opened by floating the float 22 at the set water level 21. When opened, the door body 4 can be lifted under its own weight and automatically lowered.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing the hydraulic water gate opening and closing device of the present invention, Fig. 2 is an overall view of the device, Fig. 3 is a front view of the operation panel, Fig. 4 is a side view, and Fig. 5 is a remote control room. FIG. 1...Sluice gate, 2...Upright hydraulic cylinder, 3...Rod, 4...Gate body, 5...
...Hydraulic circuit, 6...Operation panel, 7...
...Opening degree meter, 8...Mounting device, 9...
・Remote control room, 11... Auxiliary tank for replenishing insufficient oil, 15° 16... Pipe line, 18... Bypass pipe line, 20... Open/close Valve, 22...
·float.

Claims (3)

[Scope of utility model registration request] (1) An upright hydraulic cylinder 2 is installed in the water gate 1, a door body 4 is connected to the lower end of the rod 3 of the cylinder 2, and the hydraulic circuit 5 of the cylinder 2, the operation panel, and the opening degree gauge 7 are combined. A bypass pipe 18 connected to the cylinder 2 and connected to the piston upper and lower chambers of the cylinder 2 between the pipes 15 and 16 is provided with an on-off valve 20 operated by a float 22 moving up and down, and a pipe to the piston lower chamber. 15 is connected to an auxiliary tank 11 for replenishing insufficient oil in the lower chamber. (2) The hydraulic water gate opening/closing device according to claim 1, which is a registered utility model, and comprises a combination of a hydraulic circuit 5, an operation panel 6, and an opening gauge 7, which are attached to the cylinder 2 by an attachment device 8. (3) Hydraulic circuit 5. The hydraulic water gate opening/closing device according to claim 1, wherein the operating panel 6 and the opening gauge 7 are provided in a remote control room 9.