JPH044022Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention relates to a multi-stage gate for the surface water intake of stored water, and its purpose is to make it possible to retract by stacking multiple hook-shaped doors upstream and downstream in one doorway. We provide hook-type multi-stage water intake gates.

To explain this invention with reference to an embodiment of the drawing, a rectangular bottom door 1 has a plurality of hook-shaped doors 2,
3 and 4 are stacked one after another, and all these doors are guided to one door groove 5. For this reason, at least two upper and lower rollers 6, 6 are provided on the lowest door 1, and at least one roller 6 is provided on the horizontal hook-shaped portion 7 of each hook-shaped door 2, 3, 4, and the door groove 5 is provided with at least one roller 6. Each door is guided up and down by a rail (not shown). Devices for raising and lowering each of these doors, that is, ropes 8 and 9, are attached to the lowest door 1 and the uppermost hook-shaped door 4, and are hoisted up by a hoisting machine (not shown) installed at the top of the embankment wall 10. Or roll it down.

In the fully closed state shown in FIG. 1, if the water level 12 exceeds the top surface of the uppermost hook-shaped door 4, water can be taken in from the surface layer by that amount through the intake channel 13.

In order to maintain the intermediate hook-shaped doors 2 and 3 in such a fully closed state or a water intake state at an intermediate water level, a pipe 14 is fixed to each door, and a tension rod 15 is guided up and down by the pipe 14. This tension rod 15 has its upper end fixed to the hook-shaped part 7 of the upper hook-shaped door with a nut 16, and a connecting nut 17 is provided at its lower end. A locking part (not shown) is provided at the upper end of the pipe to prevent it from slipping out, and the lower door is suspended.

As a result, when the water level 12 of the reservoir falls, by winding down the rope 9, the lower hook-shaped door 2 first descends along with the lowest door 1. In order to guide this downward movement, a roller 18 is provided at the lower end of each hook-shaped door 2, 3, 4, and a rail 18 is provided on the front surface of the lower door.
9. Roll the top. To prevent the roller 18 from slipping off the rail 19, the tip 21 of the roller bearing plate 20 is bent toward the back side of the rail 19. What is indicated by the reference numeral 22 is an example of waterproof rubber.

In this way, the upper door lowers the lower door one after another, and as described above, by winding down the rope 9 of the lowermost door 1, the upper hook-shaped door 2 is attached to the lowermost door 1. , 3, and 4 are sequentially overlapped and reduced as shown in FIG. An overflow water level 23 is thereby obtained.

If it is desired to pull up each of the doors stacked in this way for inspection or repair, the rope 8 hooked to the lifting tool 24 of the lowest door 1 can be rolled up in the state shown in FIG.

If necessary, the width of the door groove 5 may be increased and each door may be provided with a roller (not shown) for preventing lateral vibration.

The hook-shaped multi-stage water intake gate invented by this invention has a retractable structure by stacking several stages of gates up and downstream on one guide rail, which allows for a significant reduction in the structure of door hardware and the weight of steel materials. The internal space and the space when rolled up and stored can be reduced.

When used as a water intake gate, it can expand and contract depending on the dam water level, and when being pulled up, it can be hoisted up either in an extended state or in a small concave state.

The upper and lower door bodies are connected by a tension rod, and maintenance is easy because each door body can be easily separated into the upper and lower parts by simply removing the connecting nut.

[Brief explanation of drawings]

Figures 1 and 2 are schematic side views of the hook-type multi-stage water intake gate according to this invention, Figure 3 is an enlarged side view of a portion thereof, and Figure 4 is an enlarged view taken along the line - of Figure 1. It is a bottom view. In the drawing, 1 is the bottom door, 2, 3, and 4 are hook-shaped doors,
5 is the door groove, 6 is the roller, 7 is the hook-shaped part, 8, 9
is a rope, 10 is an embankment wall, 12 is a water level, 13 is an intake channel, 14 is a pipe, 15, 16, 17 are nuts,
18 is a roller, 19 is a rail, 20 is a roller bearing plate, 21 is a tip, 22 is a water stop rubber, 23 is a water level,
24 is a lifting device.

Claims (1)

[Scope of utility model registration request] A rectangular bottom door 1 and multiple hook-shaped doors 2, 3, 4
The doors 1, 2, and 3 except for the hook-shaped door 4 at the top are provided with a pipe 14 and a rail 19 on the front, and the doors 2, 3, and 4 except for the bottom door 1 are provided with a pipe 14. A tension rod 15 that slides and whose upper end is fixed to the upper hook-shaped part 7 and whose lower end is locked to the upper end of the pipe 14, and a roller 18 that rolls on the rail 19 at the lower end, are provided. At least two upper and lower rollers 6, 6 are provided on the lower door 1, and at least one roller 6 is provided on the horizontal hook-shaped portion 7 of each hook-shaped door 2, 3, 4, and these rollers 6 are installed in one door groove. 5, the doors 1, 2, 3, and 4 are sequentially stacked, and ropes 8, 9 are attached to the bottom door 1 and the top door 4. .