JPS5836638Y2 - dock gate - Google Patents

Description

[Detailed explanation of the idea] This idea is related to dock gates (door ships).

As shown in FIG. 1, the dock gate 1 includes an upper ballast tank 2 and a lower ballast tank 3, and floats and sinks by pouring water into the upper and lower tanks 2 and 3.

When floating, the water in the lower ballast tank 3 is discharged to the dock 4, and the water in the upper ballast tank 2 is discharged to the sea side. It is necessary to die with a certain amount of water left inside.

The remaining water W in the tank 3 is an important ballast for preventing the dock gate 1 from floating, and it is necessary to create this ballast in a short time before water is poured into the dock 4.

However, in the past, water was drained through a manhole installed at the top of the lower ballast tank 3 while measuring the water level at intervals of several minutes to obtain the specified amount of ballast, which resulted in the problem that it took a long time to fill the dock with water. There was a point.

This idea was devised to solve the above-mentioned conventional problems, and its purpose is to provide a dock gate that has a relatively simple structure and can easily and easily obtain the specified amount of ballast during levitation. be.

In the tonk gate of this invention, a partition wall of a predetermined height is provided around the dock side water inlet of the ballast tank so that a certain amount of water in the ballast tank remains.

This invention will be explained below based on an illustrated embodiment.

As shown in FIG. 3, an upper ballast tank 2 and a lower ballast tank 3 are provided in the center of the dock gate 1.

At the bottom of the lower ballast tank 3, there is a dock side inlet/outlet 5,
5 and sea side water inlets 6, 6 are connected, and on-off valves 7, 7 buttons and 8, 8 are provided respectively.

As shown in FIGS. 5 to 8, the on-off valves 7 and 8 have disc-shaped valve bodies 7a and 8a at the lower part, and are screwed onto the mounting piece 9 at their shaft parts, By rotating 7b and 8b, the dock side water inlet 5 and the sea side water inlet 6 are opened and closed.

In FIGS. 3 to 5, L indicates the water level of the specified amount of ballast during floating, and a partition wall 10 having the same height as this water level is provided to surround the dock side inlet/outlet 5.

As shown in FIGS. 6 to 8, this partition wall 10 has a substantially U-shaped shape and is attached to a partition wall 3a of the lower ballast tank 3, and together with this partition wall 3a surrounds the water inlet.

Further, as shown in FIG. 4, the upper ballast tank 2 is provided with an open port 11 and is always in communication with seawater.

With this configuration, when the on-off valve 8 is opened, water enters the tanks 2 and 3 to the same level as the sea surface, and the dock gate 1 is submerged at the bottom of the beam.

When floating from such a state, after closing opening/closing -9f8, opening/closing square γ is opened to drain water in tank 3 into dot 4.

As a result, the water level in the tank 3 becomes equal to the specified amount of ballast due to the partition wall 10, and a predetermined amount of ballast can be automatically obtained.

Next, water is injected into the dock 4, and when the water level in the dock 4 becomes close to the sea surface, the dock gate 1 starts floating due to its buoyancy.

When floating begins, the water in the tank 2 gradually flows out to the sea side from the opening 11, and the dock gate 1 becomes even lighter and floats to a predetermined height.

In addition, when draining the water in the tank 3, the on-off valves γ and 8 are opened and closed alternately, or the on-off valves 7 and 8 are simultaneously opened and the on-off valves are pressed. It is also possible to assist the water injection into the dock 4 by making it larger.

According to this invention, a partition wall is provided around the dock side inlet of the lower ballast tank, making it possible to easily and reliably obtain the specified amount of ballast during surfacing.

[Brief explanation of the drawing]

Figure 1 is a schematic diagram showing the dock gate in a sunken state, Figure 2
The figure is a schematic diagram showing the floating state, Figure 3 is a vertical sectional view showing the dock gate according to this invention, Figure 4 is a similar cross-sectional view, and Figure 5 is a cross-sectional view showing details of the bottom of the lower ballast tank. Figures 6, 7 and 8 are a cross-sectional view, a side view and a plan view showing the vicinity of the dock side pouring and draining date. 1...Dock gate, 2...Upper ballast tank, 3...Lower ballast tank, 3a
...Partition wall, 4...Dock, 5...
... Dock side water inlet, 6... Sea side water inlet,
γ, 8...Opening/closing valve, 7a, 8a...Valve body, γb, sb...Handle, 9...
Mounting piece, 10... Bulkhead, 11... Opening port, L... Water level of specified ballast amount.

Claims (1)

[Scope of utility model registration request] A dock gate characterized in that a bulkhead is provided around a dock side inlet of the ballast tank to allow a certain amount of water to remain in the ballast tank.