JP2015101929A - Waterproof door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waterproof door which hardly requires maintenance costs and which surely operates in a flood.SOLUTION: A waterproof door 30 includes: a storage body 21 whose upper side is open; a door body 22 which becomes a lid of the storage body 21 in a fall-down state at a normal time, and which stops water in a front and back direction in a standing state in a flood; and a water pressure cylinder 23 in which water supply/exhaust ports are provided at one end side 23a and the other end side 23b respectively, and which allows the door body 22 to rotate from a fall-down state to a standing state by water supply from one of the two water supply/discharge ports. It also includes: a tank 31 for storing water inside; a booster pump 32 for supplying water of the tank 31 to the water pressure cylinder 23 by applying pressure, and which circulates the water to the tank 31; and a plurality of valves 33A, 33B, 33C, 33D which switch the direction of water supply to the water pressure cylinder 23 and water discharge from the water pressure cylinder 23 by opening/closing.

Description

  The present invention relates to a waterproof door that is installed at an entrance of a building or the like and prevents water from entering the building or the like during a flood.

In recent years, in urban areas, it has become difficult for rainwater to penetrate from the surface to the basement due to an increase in the pavement area and the use of underground spaces such as subways and underground malls. Most of it flows into the sewer.
On the other hand, localized heavy rain (so-called guerrilla heavy rain) is likely to occur due to the influence of global warming and the like.
When local heavy rains occur in such cities where rainwater is difficult to penetrate underground, the amount of rainwater that flows into the sewer easily exceeds the planning function of the sewer. In addition, serious damages such as submergence in underground shopping areas and flooding on the floor and under floor of buildings have occurred.

  It is difficult to predict when and where torrential rain will occur as a feature of such urban floods, and because it suddenly exceeds the planning function of the sewer system in a short time due to sudden rain, There is a point that there is almost no time for flooding.

Therefore, a waterproof door 10 as shown in FIGS. 4 and 5 is disclosed in order to cope with flooding due to heavy rain (see, for example, Patent Document 1).
The waterproof door 10 shown in FIGS. 4 and 5 includes a storage body 11, a door body 12, and a cylinder 13. The waterproof door 10 is installed at an entrance of a building such as an apartment building or an entrance to a subway, an underground mall, an underground parking lot, or the like. .

  The storage body 11 is buried in the ground so that its upper end is at the same height as the ground surface, and the upper side is open. And the cylinder 13 etc. are accommodated in the inside.

The door body 12 is a plate-like body, and serves as a cover of the storage body 11 in a lying state as shown in FIG. 4 in a normal time when precipitation falls within a predetermined range.
On the other hand, at the time of flood when the precipitation exceeds a predetermined amount, as shown in FIG. 5, the door body 12 stands up and stops in the front-rear direction.

The cylinder 13 is a jack handle type, and one end side 13 a is fixed to the storage body 11 with a hinge.
Then, the piston 13c moves in the cylinder 13 so that the rod 13d extends, and the door body 12 that has been in a lying state is brought into an upright state.
A plurality of cylinders 13 may be provided according to the weight and width of the door body 12. When there are a plurality of cylinders 13 as described above, the plurality of cylinders 13 are simultaneously operated during a flood and the door body 12 is well balanced. To stand upright.
The cylinder 13 is operated by manually turning the jack handle.

According to the waterproof door 10 shown in FIGS. 4 and 5, the storage body 11 is buried in the ground, and the door body 12 is normally in a lying state and serves as a lid of the storage body 11, so that the waterproof door 10 is installed. Do not let passers-by know that they are.
And since the door body 12 will be in an upright state at the time of flood, it can prevent inundation from the entrance / exit where the waterproof door 10 is installed to the inside of a building or the like.

However, the waterproof door 10 shown in FIGS. 4 and 5 is a jack handle type cylinder 13, and the door body 12 is raised by manual operation, so that a weak woman or an elderly person raises the door body 12. It takes a lot of load to get into the state.
Moreover, although it is necessary to replace | exchange grease regularly, since the grease replacement | exchange is often requested to a specialist, the cost of maintenance will increase.

Based on these points, a waterproof door 20 as shown in FIGS. 6 to 8 is disclosed (for example, see Patent Document 2).
In this waterproof door 20, the door body 22 is rotated by a hydraulic cylinder 23 instead of the jack handle type cylinder 13.

More specifically, water pipes 24A and 24B are connected to one end side 23a and the other end side 23b of the hydraulic cylinder 23, respectively, and as shown in FIG. 7, water is supplied from one end side 23a fixed to the storage body 21 with a hinge. Is injected by the tap water pressure, the piston 23c moves from the one end side 23a to the other end side 23b in the hydraulic cylinder 23, and the rod 23d extends. Thereby, the door body 22 that has been in a lying state is brought into an upright state.
On the contrary, as shown in FIG. 8, when the changeover switch 25 is switched and water is injected from the other end side 23b of the hydraulic cylinder 23, the piston 23c is moved from the other end side 23b to the one end side in the hydraulic cylinder 23 by the hydraulic pressure. It moves to 23a and the rod 23d shrinks. Thereby, the door body 22 which has been in the standing state is in a lying state.
The storage body 21 and the door body 22 are the same as those of the waterproof door 10 in FIGS. 4 and 5.

According to the waterproof door 20 using such a hydraulic cylinder 23, the door body 22 is automatically raised only by switching the changeover switch 25, so that little effort is required to operate the waterproof door 20.
Further, since the hydraulic cylinder 23 needs only maintenance that drains the water once a year, maintenance by a specialist is often unnecessary, and maintenance costs are hardly required.

JP 2007-308936 A JP 2005-139687 A

However, the waterproof door 20 using the hydraulic cylinder 23 has a problem that when the door body 22 is heavy, the tap water pressure is insufficient and the door body 22 does not stand up in a flood.
In addition, there is a problem that the waterproof door 20 does not operate when water is shut off due to flooding.

  Accordingly, an object of the present invention is to provide a waterproof door that operates at a low cost with little maintenance cost.

  In order to achieve the above object, a waterproof door (30) according to claim 1 of the present invention includes a storage body (21) whose top is opened, and a cover of the storage body (21) in a normally lying state. In addition, a door body (22) that stops standing in a standing state during a flood, and a water supply / drain port is provided on each of the one end side (23a) and the other end side (23b), and one of the two water supply / drain ports. In a waterproof door (30) provided with a hydraulic cylinder (23) for rotating the door body (22) from a lying state to an upright state by supplying water from one side, a tank (31) in which water is stored and pressure And the pressure pump (32) for supplying water from the tank (31) to the hydraulic cylinder (23) and circulating the water to the tank (31), and opening and closing to the hydraulic cylinder (23). Water supply and before A plurality of valves for switching the direction of the waste water from hydraulic cylinder (23) (33A, 33B, 33C, 33D) characterized in that it comprises a.

  In the waterproof door (30) according to claim 2, the plurality of valves (33A, 33B, 33C, 33D) are electric valves, and the power source of the electric valves (33A, 33B, 33C, 33D) The battery further comprises:

  The waterproof door (30) according to claim 3 is characterized in that the pressure increasing pump (32) is a manual pump.

  The waterproof door (30) according to claim 4 is characterized in that antifreeze is mixed with water in the tank (31).

  Here, the symbols in the parentheses indicate corresponding elements or corresponding matters described in the drawings and the embodiments for carrying out the invention described later.

According to the waterproof door of the first aspect of the present invention, since the hydraulic cylinder that rotates the door body from the lying down state to the standing state by supplying water is provided, the water inside the hydraulic cylinder is discharged once a year. Maintenance is sufficient. Therefore, maintenance by a specialized contractor is unnecessary, and maintenance costs are hardly required.
It also has a tank that contains water inside and a pressure-intensifying pump that applies pressure to supply the tank water to the hydraulic cylinder and circulates the water to the tank. The door body can be in an upright state. In addition, since it is not affected by water breakage, the waterproof door can be reliably operated during a flood.
Of course, since the door body is rotated by the hydraulic cylinder, the door body can be erected automatically or with a single switch operation.
In addition, since it has a plurality of valves that open and close to switch the direction of water supply to the hydraulic cylinder and the direction of drainage from the hydraulic cylinder, the door body can be changed from the standing state to the standing state and from the standing state to the lying state by water. .

  Moreover, according to the waterproof door of Claim 2, in addition to the effect of the invention of Claim 1, the plurality of valves are electric valves, and further includes a battery as a power source of the electric valves. Even in the event of a flood, the waterproof door can be operated reliably during a flood.

  Moreover, according to the waterproof door of Claim 3, in addition to the effect of the invention of Claim 1 or Claim 2, since the booster pump is a manual pump, the operation | movement at the time of a power failure becomes more reliable. .

  Moreover, according to the waterproof door of Claim 4, in addition to the effect of the invention of Claim 1 thru | or 3, since the antifreeze liquid was mixed with the water in a tank, the water in a tank or a hydraulic cylinder is It does not freeze even in winter and can be operated reliably during floods. Further, the hydraulic cylinder or the like is not damaged by the volume expansion of water accompanying freezing.

  In addition, the point provided with the tank which stored water inside and the pressure increase pump like the waterproof door of this invention is not described at all in the patent documents 1 and 2 mentioned above.

It is a piping diagram when the door body in the waterproof door which concerns on 1st embodiment of this invention is made into the standing state. It is a piping diagram when making the door body in the waterproof door shown in FIG. 1 into a lying state. It is a piping diagram when the door body in the waterproof door which concerns on 2nd embodiment of this invention is made into the standing state. It is a side view which shows the waterproof door which concerns on a prior art example, and the waterproof door which concerns on embodiment of this invention. It is a side view when the waterproof door shown in FIG. 4 will be in the standing state. It is a perspective view when the door in the waterproof door which concerns on another prior art example, and the waterproof door which concerns on embodiment of this invention is made into the standing state. It is a piping diagram when the door body in the waterproof door shown in FIG. 6 is made into the standing state. It is a piping diagram when making the door body in the waterproof door shown in FIG. 6 into a lying state.

A waterproof door 30 according to a first embodiment of the present invention will be described with reference to FIGS. 1, 2, and 6.
The waterproof door 30 mainly includes a storage body 21, a door body 22, a hydraulic cylinder 23, a tank 3131, a pressure increasing pump 32, and a valve 33. The waterproof door 30 is installed at the entrance of a building or underground shopping area, and prevents flooding into the building or the like when a flood occurs due to heavy rain.
In addition, the same code | symbol was attached | subjected to the same part as what was shown in the prior art example.

The storage body 21 is a box-like body that is open at the top, and is buried in the ground so that the opened upper end is at the same height as the ground surface.
The components of the waterproof door 30 such as the hydraulic cylinder 23 are accommodated inside.
The width of the storage body 21 in the left-right direction is substantially equal to the width of the entrance / exit where the waterproof door 30 is installed.

The door body 22 is a plate-like body, and the door body 22 serves as a cover of the storage body 21 in a substantially horizontal state as in the conventional example (FIG. 4) in a normal state where precipitation falls within a predetermined range.
Since the door body 22 is a part of the floor at the doorway in the lying state, a passerby or the like passes over the door body 22. Therefore, in the present embodiment, the door body 22 is given a strength sufficient to prevent deformation and breakage even when the automobile passes over.
On the other hand, at the time of flooding when the precipitation exceeds a predetermined amount, as shown in FIG. 1, the door body 22 stands up and stops in the front-rear direction (left-right direction in FIG. 1). In addition, it dams up so that water may collect on the right side of the door body 22 in FIG. 1 and water may not flow into the left side of the door body 22. On the other hand, the waterproof door 30 may be installed so as to collect water on the left side in FIG.

One end side 23a of the hydraulic cylinder 23 is fixed to the inside of the storage body 21 by a hinge, and is rotatable about the hinge. The tip of the rod 23 d extending from the other end side 23 b of the hydraulic cylinder 23 is fixed to the back side of the door body 22 by a hinge.
In this embodiment, as shown in FIG. 6, two hydraulic cylinders 23 are provided for one waterproof door 30. The two hydraulic cylinders 23 operate simultaneously to bring the door body 22 upright with a good balance.
And the water supply pipes 24A and 24B made from a soft tube are connected to the water supply / drain port provided in the one end side 23a and the other end side 23b of the hydraulic cylinder 23, respectively. The hydraulic cylinder 23 expands and contracts the rod 23d with water supplied through the water pipes 24A and 24B, and rotates the door body 22 from the lying down state to the standing state.

The shock absorber 26 is, for example, a shock absorber such as a gas spring, and one end side 26a is attached to the storage body 21 by a hinge, and the other end side 26b is attached to the back side of the door body 22 by a hinge. Four shock absorbers 26 are attached to one door body 22.
The shock absorber 26 reduces an impact when the door body 22 is in a standing state and in a lying state. It should be noted that the present invention is not limited to reducing the impact in both the standing state and the lying down state, and it is only necessary to reduce the impact when entering the lying down state, for example.

The support bar 27 is a half-folded support body in which a central portion thereof is bent, and a plurality (four in this case) are provided. One end side 27a is attached to the storage body 21 by a hinge, and the other end side 27b is attached to the back side of the door body 22 by a hinge.
Then, when the door body 22 is in the standing state, the support bar 27 is extended to assist the hydraulic cylinder 23 so that the standing state of the door body 22 can be reliably maintained. That is, the support bar 27 can be locked in the extended state.

The operation panel 28 includes a tank 31, a booster pump 32, an electric valve 33, and a control unit (not shown), and is supplied with electric power by a household 100V power source.
The tank 31 has water stored therein, and an antifreeze liquid is mixed with the water. This amount of water is sufficient to fill the water pipes 24A, 24B and the hydraulic cylinder 23.
Immediately downstream of the tank 31, an electric pressure increasing pump 32 that sucks up and pressurizes water in the tank 31 and supplies the pressurized water to the hydraulic cylinder 23 is disposed.

The electric valve 33 is a check valve in which the direction of water flow is limited to one direction and can be opened and closed by electric power.
The electric valve 33 includes four valves, a first valve 33A, a second valve 33B, a third valve 33C, and a fourth valve 33D. The electric valve 33 is opened and closed to supply water to the hydraulic cylinder 23 and to discharge water from the hydraulic cylinder 23. Switch.
Specifically, the first valve 33A is between the booster pump 32 and one end side 23a of the hydraulic cylinder 23, and the second valve 33B is between the booster pump 32 and the other end side 23b of the hydraulic cylinder 23, and the third valve 33C. Is disposed between the tank 31 and one end side 23a of the hydraulic cylinder 23, and the fourth valve 33D is disposed between the tank 31 and the other end side 23b of the hydraulic cylinder 23.
Further, when the first valve 33A and the second valve 33B are in the open state, water can flow from the tank 31 to the hydraulic cylinder 23. On the other hand, when the third valve 33C and the fourth valve 33D are in the open state, water can flow from the hydraulic cylinder 23 to the tank 31. The first valve 33A and the second valve 33B are not simultaneously opened or closed, and the third valve 33C and the fourth valve 33D are not simultaneously opened or closed.

  As shown in FIG. 1, when the water flow sensor 34 installed outside the operation panel 28 detects water, the control unit opens the first valve 33A and the fourth valve 33D when the water flow sensor 34 detects water. The second valve 33B and the third valve 33C are closed, and the pressure increasing pump 32 applies pressure to supply water in the tank 31 to the hydraulic cylinder 23 from its one end side 23a. To the tank 31 again. Thereby, the piston 23c of the hydraulic cylinder 23 moves from the one end side 23a to the other end side 23b, the rod 23d is extended, and the door body 22 is in an upright state.

On the other hand, as shown in FIG. 2, when the flood is settled and the user presses the “depress button” (not shown) on the operation panel 28 (the water flow sensor 34 may stop detecting water), the control unit However, the first valve 33A and the fourth valve 33D are closed, the second valve 33B and the third valve 33C are opened, and the pressure-intensifying pump 32 applies pressure to transfer the water in the tank 31 to the hydraulic cylinder 23. By supplying from the other end side 23b, the water circulates from the one end side 23a to the tank 31 again. Thereby, the piston 23c of the hydraulic cylinder 23 moves from the other end side 23b to the one end side 23a, the rod 23d is contracted, and the door body 22 is in a lying state.
It should be noted that an alarm is given by blinking of a buzzer and light during transition to each standing or lying down state or in a standing state.

According to the waterproof door 30 configured as described above, since the hydraulic cylinder 23 that rotates the door body 22 from the lying down state to the standing state by supplying water is provided, the water inside the hydraulic cylinder 23 is discharged once a year. Maintenance is enough. Therefore, maintenance by a specialized contractor is unnecessary, and maintenance costs are hardly required.
Moreover, since the tank 31 which stored water inside and the pressure increasing pump 32 which applies the pressure and supplies the water of the tank 31 to the hydraulic cylinder 23 and circulates the water to the tank 31 are provided, the door body 22 is heavy. In addition, the door body 22 can be raised with the increased water pressure. In addition, since it is not affected by water breakage, the waterproof door can be reliably operated during a flood.

Of course, since the door body is rotated by the hydraulic cylinder 23, the door body can be erected automatically or with a single switch operation.
Moreover, since the several valve | bulb 33 which opens and closes and switches the direction of the water supply to the hydraulic cylinder 23 and the drainage from the hydraulic cylinder 23 is provided, the door body 22 is changed from the standing state to the standing state by water, and from the standing state to the lying state. can do.

  Further, since the antifreeze liquid is mixed with the water in the tank 31, the water in the tank 31 and the hydraulic cylinder 23 is not frozen even in winter, and can be reliably operated during a flood. Further, the hydraulic cylinder 23 or the like is not damaged by the volume expansion of water accompanying freezing.

(Second embodiment)
Next, with reference to FIG. 3, the waterproof door 30 which concerns on 2nd embodiment of this invention is demonstrated. In addition, the same code | symbol was attached | subjected to the same part as 1st embodiment.
The difference of this embodiment from the first embodiment is a method of pressurizing water in the tank 31, and the other components are the same as those of the first embodiment.

That is, in the present embodiment, a manual pump is employed as the pressure increasing pump 32, thereby applying pressure to the water in the tank 31.
Therefore, pressure can be applied to the water in the tank 31 even at the time of a power failure, so that the situation where the door body 22 cannot be raised even if a power failure occurs is further ensured.

  In the first and second embodiments, two hydraulic cylinders 23 are provided in the left-right direction with respect to one door body 22; however, the present invention is not limited to this, and more hydraulic cylinders 23 may be provided. Good.

In addition, the electric valve 33 has obtained power from a household 100V power source, but is not limited to this, and the operation panel 28 includes a battery serving as a power source for the electric valve 33 and the electric booster pump 32. Also good.
The electric valve 33 may be a valve that is manually opened and closed.

  In addition, although the antifreeze liquid is mixed with the water in the tank 31, another solid substance may be mixed to lower the freezing point. Furthermore, it is not necessary to take measures to prevent freezing in warm regions.

In addition, the water flow sensor 34 detects water and the waterproof door starts operating. However, the operation is not limited to this, and the operation may be started based on a user's judgment.
The electric valve 33 is composed of four valves from the first valve 33A to the fourth valve 33D. However, the electric valve 33 is not limited to this, and may be similar to a known four-way electromagnetic valve. That's fine.

DESCRIPTION OF SYMBOLS 10 Waterproof door 11 Storage body 12 Door body 13 Cylinder 13a One end side 13b Other end side 13c Piston 13d Rod 20 Waterproof door 21 Storage body 22 Door body 23 Hydraulic cylinder 23a One end side 23b Other end side 23c Piston 23d Rod 24A Water pipe 24B Water pipe Pipe 25 Switch 26 Shock absorber 26a One end side 26b The other end side 27 Support bar 27a One end side 27b The other end side 28 Control panel 30 Waterproof door 31 Tank 32 Booster pump 33 Valve 33A First valve 33B Second valve 33C Third valve 33D Fourth valve 34 Water flow sensor

Claims (4)

A container with an open top;
In the normal state, it becomes a cover of the storage body in a lying state, and a door body that stops standing in a standing state during a flood,
In a waterproof door provided with a hydraulic cylinder that is provided with a water supply / drain port on each of one end side and the other end side, and that rotates the door body from a lying state to a standing state by supplying water from one of the two water supply / drain ports. ,
A tank with water inside,
A pressure increasing pump that applies pressure to supply water from the tank to the hydraulic cylinder and circulates the water to the tank;
A waterproof door comprising a plurality of valves that open and close to switch a direction of water supply to the hydraulic cylinder and drainage from the hydraulic cylinder.   The waterproof door according to claim 1, wherein the plurality of valves are electric valves, and further includes a battery serving as a power source for the electric valves.   The waterproof door according to claim 1, wherein the pressure increasing pump is a manual pump.   The waterproof door according to any one of claims 1 to 3, wherein an antifreeze liquid is mixed with water in the tank.