JP2022112853A - elevator - Google Patents

Abstract

To provide an elevator which can continuously and safely operate an elevator car at the time of flooding.SOLUTION: An elevator 10 includes elevator car control means 20 which operates a winch 23 to control an operation of the elevator car 12 in a hoistway 11. The elevator comprises: submersion detection means 42 which is connected with the elevator car control means and arranged at a position less than the maximum submersion height which allows submersion of the hoistway; a submergible side electric system 43, 45, 47, 52, 54 which is electrically connected with the elevator car control means and arranged below the maximum submersion height of the hoistway; a non-submergible side electric system 44, 46, 48, 53, 55 which is arranged above the maximum submersion height; and isolation means 61, 63, 64 which isolates, when the submersion detection means detects submersion, the submergible side electric system from the elevator car control means.SELECTED DRAWING: Figure 3

Description

TECHNICAL FIELD The present invention relates to an elevator that can continue to operate on the upper floor side even when it is flooded.

Elevators are equipped with flood detection means such as float switches in the pit. When water enters the pit due to a flood or typhoon and the flood detection means is activated, the car is moved to a specific floor or higher where it will not be flooded, and the elevator is evacuated. I'm trying to stop driving. However, in recent years, even if the pit of the elevator or the lowest floor above the pit is flooded, there is a demand for continuous operation during flooding, in which the elevator service is continued on the upper floors that are not affected by the flooding.

In Patent Document 1, a group of limit switches for detecting the movement limit on the lower floor side of the car is divided into a first limit switch group arranged in the lowest floor area and a second limit switch group arranged one floor above the lowest floor. It consists of a group of switches. When the car is not submerged, the car is operated by the first limit switch group, and when the submergence detection means is activated, the car is switched to the second limit switch group, and the lower floor movement limit of the car is changed from the lowest floor to the first floor above. By doing so, the elevator can be operated even when the pit or the lowest floor is submerged.

JP-A-5-32382

However, if the pit continues to be flooded and submerged to the lowest floor area, not only the above-described first limit switch group, but also various electrical systems that hinder the continuation of elevator operation, such as hall registration devices and indicators, will be damaged. Electrical equipment and electrical systems such as the landing door switches that constitute the safety circuit are also partially submerged, and there is a risk that the operation of the elevator will be forced to stop.

SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator that can continue to safely operate a car even when it is flooded.

The elevator of the present invention is
An elevator comprising car control means for operating a hoist to control operation of the car in a hoistway,
Flooding detection means connected to the car control means and arranged at a position up to a maximum flood height at which flooding of the hoistway is permitted;
A submerged side electrical system electrically connected to the car control means and arranged below the maximum submerged height of the hoistway, and a non-submerged side electrical system located above the maximum submerged height; has
There is provided disconnecting means for disconnecting the flooded side electrical system from the car control means when the water intrusion detecting means detects water intrusion.

A plurality of the submergence detection means are arranged at different heights up to the maximum submergence height,
The disconnecting means can disconnect the submerged side electric system below each submerged detection means according to the flood height.

It is connected to the car control means and has a safety circuit for operating the car, and the flooding side electrical system is one or more flooding side safety devices arranged below the maximum flooding height, , the non-submerged side electrical system is one or a plurality of non-submerged side safety devices arranged above the maximum submerged height, and the submerged side electrical system and the non-submerged side electrical system are connected in series and normally When the safety circuit is configured,
the disconnecting means is a safety circuit disconnecting means for disconnecting the flood-side safety device from the normal safety circuit;
A safety circuit connection means is provided for connecting the non-submerged side safety devices to each other in series with the car control means to form a flood safety circuit after the safety circuit disconnection means has disconnected the submerged side safety device. can be configured.

The flooded side electrical system is connected to the car control means and includes one or more flooded side electrical devices arranged below the maximum submerged height, and the non-submerged side electrical system is connected to the maximum submerged height. is also one or more flooded side electrical devices arranged above,
The disconnecting means can disconnect the flooded-side electrical equipment from the car control means when the flooding detecting means detects the flooding.

The submerged side electrical system is a limit switch for detecting the movement limit of the lower floor side of the car, and the non-submerged side electrical system is located at a position higher than the maximum submerged height, It can be a limit switch at the time of flooding that detects the movement limit of.

A plurality of the flood detection means and the flood limit switches are arranged at different heights up to the maximum flood height,
The disconnecting means may disconnect the submerged side limit switch connected to the car control means according to the flood height.

It is desirable that the hoist and car control means are arranged above the maximum submerged height.

According to the elevator of the present invention, during continuous operation during flooding, by electrically disconnecting the flooded side electrical system that may be submerged or submerged, the effects of these short circuits and malfunctions can be eliminated. But you can still drive the car safely.

FIG. 1 is an explanatory diagram showing a configuration example of an elevator to which the present invention is applied, in which (a) is a service floor during normal operation, and (b) is a car during submersion control operation or forced submersion control operation. It is a figure which shows a standby state. FIG. 2 is an explanatory diagram showing a configuration example of an elevator to which the present invention is applied, in which (a) shows the service floor of the car during continuous operation under flooding, and (b) shows the service floor of the car during counterweight flooding allowable operation. It is a diagram. FIG. 3 is a schematic diagram of equipment arrangement in a hoistway in which the present invention is applied to a machine room-less elevator, and also shows a submerged area. FIG. 4 is a control block diagram according to one embodiment of the present invention. FIG. 5 is an explanatory diagram showing the details of the safety circuit and the like, in which (a) is a circuit diagram during normal operation and (b) is a circuit diagram during continuous operation during flooding. FIG. 6 is an explanatory diagram showing key switch states of the switching means for switching between (a) normal operation, (b) forced submersion control operation, (c) continuous operation during flooding, and (d) allowable operation during counterweight flooding. FIG. 7 is a circuit diagram showing the configuration of the breaker means, in which (a) shows the circuit state during normal operation, and (b) shows the circuit state during continuous operation during flooding.

In the operation of the elevator 10, the present invention detects that the hoistway 11 is flooded from the state of "normal operation" and evacuates the car 12 at a specific floor or higher, "flood control operation", floods, typhoons, etc. "forced submersion control operation" in which the car 12 is evacuated in advance at a specific floor or higher when the hoistway 11 is expected to be flooded, and operation of the car 12 on the non-flooded upper floor during the forced submersion control operation. Furthermore, during continuous operation during flooding, the car 12 is not allowed to land on the water, but the counterweight 13 is allowed to land on or submerge in the water. It is possible to switch the "permissible operation when the counterweight is flooded" that allows the service to be performed on the floors near the top floor that cannot be serviced.

In this embodiment, the "flood control operation" is executed when the flood detection means 40 shown in FIG. 3 detects that the hoistway 11 is flooded. The flood detection means 40 can be exemplified by a so-called float switch. In addition, the switching of each of the "mandatory submersion control operation, continuous operation during flooding, and permissible operation during counterweight flooding" is carried out by switching the switching means 31 to 34 shown in FIG. etc. is executed by operating. The elevator 10 of the present invention will be described below with reference to the drawings.

First, with reference to FIGS. 1 and 2, outlines of a building, a service floor, etc. in which an elevator 10 according to an embodiment of the present invention is installed will be described. In addition, although the machine room-less elevator is described as an example in FIG. 3 to be described later, in FIG. 1 and FIG. shows only

The building is composed of, for example, the first basement floor (B1F) to the tenth floor (10F) and the rooftop floor (heliport floor: PHF) above it, and the building has a hoistway 11 that serves as a space for the car 12 to go up and down. formed. The elevators are a first elevator 101 (1st EV) that can service from the 1st basement floor to the 10th floor, and a second elevator 102 (2nd EV) that can service from the 1st basement floor to the rooftop floor. The first elevator 101 and the second elevator 102 are collectively referred to as "elevator 10" as appropriate. The first elevator 101 and the second elevator 102 can each be in the form of one or more elevators. In the illustrated embodiment, the first elevator 101 is three elevators 1 to 3, and the second elevator 102 is It is one of Unit 4.

More specifically, FIG. 1(a) shows service floors of cars 121 and 122 during normal operation. The cages 121 and 122 are collectively referred to as "the cage 12" as appropriate. As described above, in normal operation, the first elevator 101 serves from the first basement floor to the tenth floor, and the second elevator 102 similarly serves from the first basement floor to the rooftop floor. FIG. 1(b) shows the shunting state of the car 12 during submersion control operation or forced submersion control operation. The shunting floor of the car 12 is set to a floor higher than the maximum flood height L (the first floor is flooded) as shown in FIG. 1(b) and FIG. 2 shown below. In FIG. 1B, the car 121 of the first elevator 101 is on the third floor, and the car 122 of the second elevator 102 is on the second floor.

FIG. 2(a) shows the maximum submerged height L assumed at the time of submergence, and the submerged area FA is indicated by hatching. In this embodiment, the maximum flood height L is set between the first and second floors, but the maximum flood height L depends on the height of the building above sea level and the surrounding conditions (distance to the sea or river, flood control, etc.). environment, etc.). The range in which the cars 121 and 122 and the corresponding counterweights 131 and 132 (also collectively referred to as “counterweights 13” as appropriate) can operate without landing on the water during continuous operation during flooding is In FIG. 2A, the range excludes the flooded area FA indicated by hatching and the upper floor area UA indicated by hatching in the figure. In this embodiment, the upper floor area UA is the 9th and 10th floors of the first elevator 101, and the 10th floor and the rooftop floor of the second elevator 102. Continuous operation” results in floors that cannot be serviced.

On the other hand, there is a demand that the upper floor area UA needs to be serviced even during continuous operation during flooding. For example, hospitals where the top floor (PHF) is the heliport. In order to meet such demands, in the present invention, the second elevator 102 is configured to perform counterweight submerged allowable operation that allows the counterweight 132 to land on and submerge in water. As shown in FIG. 2B, the upper floor area UA of the second elevator 102 is abolished in the "permissible operation when the counterweight is flooded", and the car 122 can service the 10th floor and the rooftop floor as well. When servicing these floors, the counterweight 132 of the second elevator 102 travels through the flooded area FA.

When executing such continuous operation during flooding and permissible operation during counterweight flooding, it is presupposed that how the elevator 10 is to be flooded under a situation where the elevator 10 is predicted to be flooded or submerged. must be determined. In this embodiment, as described above, before the continuous operation during flooding, when the flood detection means 40 such as the float switch detects that the hoistway 11 is flooded, the car 12 is evacuated above a specific floor. In addition, when flooding or typhoon is expected, a manager operates a key switch (see FIG. 6) to perform a forced flooding control operation to evacuate the car 12 to a specific floor or higher in advance. Then, after the building manager confirms the flooding condition of the elevator 10 and the building, continuous operation during flooding and allowable operation during counterweight flooding are performed.

FIG. 3 is a schematic diagram of equipment arrangement in the hoistway 11 of the elevator 10 according to one embodiment of the present invention, FIG. 4 is a control block diagram, and FIG. is shown. In FIG. 3, the elevator 10 is a machine room-less elevator, but the structure of the elevator 10 is not limited to the embodiment shown in FIG. may In addition, in the block diagram of FIG. 4, each functional block is directly electrically connected to the car control means 20 for easy understanding of the explanation. However, as shown in FIG. 5, for example, switches and the like that constitute part of the functional blocks can be connected in series and electrically connected to the car control means 20 .

Since the basic structure of the elevator 10 is well known, detailed description thereof is omitted. As shown in FIG. In the machine room-less elevator, the end of the main rope 15 is connected to a beam or the like at the upper end of the hoistway 11 . In the route of the main rope 15, there are a car 12 towed by a car 16, a hoist 23 arranged via return wheels 16a, 16a, and a counterweight 13 suspended and supported by a hanging wheel 16b. equip. The hoist 23 is arranged at a position higher than the maximum submerged height L. A car buffer 17 and a counterweight buffer 17b are arranged on the floor of the hoistway 11 .

All control of elevator 10 is performed by car control means 20 shown in FIGS. The car control means 20 can be arranged in the hoistway 11 or in a machine room or the like in an elevator having a machine room, and is arranged at a position higher than the maximum submerged height L as shown in FIG. 3 does not show electrical connections, but as shown in FIG. 4, the car control means 20 controls the hoist 23 via an inverter 21, for example. As shown in FIG. 4, the inverter 21 having a built-in speed monitoring device 22 can be employed. In addition, the hoist 23 incorporates a brake 24 (Fig. 4), and the speed can be detected by an encoder 25 (Fig. 4). Outputs from the speed monitoring device 22 and the encoder 25 are sent to the car control means 20 .

Car top control means 26 for performing various controls within the car 12 is arranged in the car 12 . The on-car control means 26 manages various functions such as car calling, door opening/closing, lighting, and air conditioning within the car 12 . A car door switch 27 for detecting opening and closing of the car door is arranged in the car 12 . The car top control means 26 and the car door switch 27 are electrically connected to the car control means 20 via the electric cable 18 . The electric cable 18 is arranged so as to hang down between the car 12 and the car control means 20, and as shown in FIG. No issues with shorts etc.

Further, on each floor, a registration device for calling the hall of the car 12, an indicator for indicating the position of the car, the arrival of the car, and the like are arranged. These hall registration devices, indicators, etc. are collectively referred to simply as electrical equipment 54, 55 or an electrical system, and are shown in FIGS. Electrical devices 54 and 55 are also electrically connected to car control means 20 . In the present invention, the electrical equipment 54 and 55 are appropriately arranged in the submerged area FA as the submerged side electrical equipment 54 (inundation side electrical system), and those arranged at a position higher than the maximum submerged height L are non-submerged. It is called a flooded side electrical device 55 (non-flooded side electrical system).

In the vicinity of the floor surface of the hoistway 11, as shown in FIGS. The flood detection means 40 detects flood in the vicinity of the floor surface of the hoistway 11 . The flood detection means 40 serves as a switching trigger to the flood control operation. Further, a limit flood detection means 41, which is also composed of a float switch and the like, is arranged slightly above the position corresponding to the maximum flood height L. FIG. When the limit flood detection means 41 detects flood, the operation of all elevators 10 including continuous operation during flood is forcibly terminated. The flood detection means 40 and the limit flood detection means 41 are electrically connected to the car control means 20 .

Between the flood detection means 40 and the limit flood detection means 41, a flood detection means 42 is arranged as shown in FIGS. The water ingress detection means 42 is composed of a float switch or the like, and is electrically connected to the car control means 20 . As shown in FIG. 3, one water intrusion detection means 42 or a plurality of means (reference numerals 42, 42a) can be arranged at different heights. The flood detection means 42 is arranged at a height near the maximum flood height L. FIG. When a plurality of flood detection means 42 and 42 a are arranged, the flood detection means 42 a is arranged above the flood detection means 40 and below the flood detection means 42 . When the water reaches the water detection means 42, 42a, it is known that the water has progressed up to the height.

Similarly, in the hoistway 11, as shown in FIGS. 3 to 5, a limit switch 43 on the lowest floor side is arranged to detect that the car 12 has reached the lowest floor, in this embodiment, the first basement floor. be done. Below the limit switch 43, a final limit switch 45 on the lowest floor side is arranged, which serves as a trigger for stopping the hoist 23 when the car 12 moves below the limit switch 43 for some reason. These limit switch 43 and final limit switch 45 are electrically connected to the car control means 20 . The final limit switch 45 constitutes a flood-side safety device 52 (flood-side electrical system) of the present invention, which will be described later.

Further, in the hoistway 11, a flood limit switch is provided on each floor so that the car 12 can operate on floors above the maximum flood height L, in this embodiment, on the second floor or higher during continuous operation during flooding. 44, and a submerged final limit switch 46 is arranged at a position lower than the submerged limit switch 44 and higher than the maximum submerged height L (a position higher than the limit submerged detection means 41). The flood limit switch 44 and the flood final limit switch 46 are also electrically connected to the car control means 20 . The submerged final limit switch 46 constitutes a non-submerged side safety device 53 (non-submerged side electrical system) of the present invention, which will be described later.

Further, as shown in FIG. 5, the landing door switches 47 and 48 for detecting opening/closing of the landing door 14 of each floor are arranged. Regarding the landing door switches 47 and 48, those arranged on the floor of the submerged area FA are the flooded side landing door switches 47, and those arranged on the floors higher than the maximum flood height L are the non-flooded side landing door switches 48. called. The flooded side landing door switch 47 constitutes a flooded side safety device 52 (flooded side electrical system), and the non-flooded side landing door switch 48 constitutes a non-flooded side safety device 53 (non-flooded side electrical system) of the present invention. do.

On the other hand, the car control means 20 performs the above-described "normal operation", "submersion control operation, forced submersion control operation" (collectively referred to as "Phase 1" as appropriate), continuous operation during flooding (as appropriate "Phase 2"). ), and allowable operation when the counterweight is flooded (arbitrarily referred to as “Phase 3”).

"Normal operation" is normal operation in non-flooded, non-flooded conditions, and the car control means 20 runs the car 12 at its rated speed to service all floors. In this embodiment, as shown in FIG. 1A, the first elevator 101 serves the first basement floor to the tenth floor, and the second elevator 102 serves the first basement floor to the roof floor.

"Flood control operation" (Phase 1) is an operation executed when the flood detection means 40 detects that the floor of the hoistway 11 is flooded. Based on the detection result, the car control means 20 performs a submergence control operation in which the car 12 is retracted to a specific floor above the maximum submergence height L and stopped. For example, in the flood control operation, once the flood detection means 40 detects flooding, the car 12 is moved to a specific floor (FIG. 1(b)), and then the following flood continuous operation switching means 32, 33 Except when is operated, the elevator 10 can be put into a dormant state until the maintenance personnel cancels the submersion control operation. As a result, the car 12 can be prevented from getting wet.

The flood control operation is an evacuation operation when water actually infiltrates the hoistway 11. However, when flooding due to a flood or typhoon is expected, the administrator can operate the "forced flood control operation state" in advance. It is also possible to switch to (Phase 1) and evacuate the car 12 to a specific floor or higher in advance to prevent water exposure (FIG. 1(b)). In this embodiment, switching to the forced submersion control operation is performed by the forced submersion control operation switching means 31 . As shown in FIG. 6, the forced submersion control operation switching means 31 is arranged on the operation panel 30 of FIG. 4 along with other switching means 32-34. The operation panel 30 is installed, for example, at the landing of a specific floor.

First, the operation panel 30 will be described. As shown in FIG. 6, the operation panel 30 has four key switches. The leftmost key switch in the drawing is the forced submersion control operation switching means 31 described above. The two central key switches are means for switching continuous operation during flooding 32 and 33 which are operated when continuous operation during flooding is performed. In this embodiment, the continuous operation switching means 32 on the left side is for elevators 1 and 2 of the first elevator 101, and the continuous operation switching means 33 on the right side is for elevators 3 of the first elevator 101 and the second elevator 102. It is for switching the operation of Unit 4. Furthermore, the rightmost key switch is counterweight flooding allowable operation switching means 34 for switching the operation of the second elevator 102 (elevator 4) to counterweight flooding allowable operation. In the present embodiment, "operation" refers to a switching operation from "off" to "on" for any switching means.

FIG. 6(a) shows a normal operation state in which none of the switching means 31 to 34 is operated, FIG. 6(b) shows a forced submersion control operation state in which the forced submersion control operation switching means 31 is operated, FIG. c) shows the state of continuous operation during flooding when the continuous operation switching means 32 and 33 are operated, and FIG. Each key switch position in the operating state is shown.

In a state where the forced flood control operation switching means 31 is operated from the flood control operation state or before the flood detection means 40 detects flooding (FIG. 6(b): phase 1) The building manager checks whether there is any foreign matter entering the hoistway 11, whether there is a dangerous situation such as a rise in water level, whether there is a power supply, etc., and operates the elevator 10 safely if it is on the upper floor. Determine if it is possible. Then, when it is determined that safe operation is possible, the submerged continuous operation switching means 32 and 33 of the operation panel 30 are operated (Phase 2).

In the submerged continuous operation (Phase 2), the car control means 20 moves the car 12 to areas other than the submerged area FA (above the maximum submerged height L) and the upper floor area UA, as shown in FIG. serve with. The reason why the upper floor area UA is not serviced is to prevent the counterweight 13 from landing on or being submerged in water.

At this time, as shown in FIG. 3, the electric cable 18 and the balance rope (not shown) may be partially submerged. Also, water may adhere to the hoistway 11 . Therefore, if the car 12 is moved at the rated speed as in normal operation, the water adhering to the car 12 may splash in the hoistway 11 and the hoistway 11 and other equipment may be exposed to water. Attached water leads to short circuits in electrical systems and rusting of equipment.

Therefore, as shown in FIG. 6(c), the car control means 20 switches between the inverter 21 and the hoist 23 when the submerged continuous operation switching means 32 and 33 are operated to switch to submerged continuous operation. to make the running speed of the car 12 lower than the rated speed. For example, it is desirable that the running speed of the car 12 is 1/3 to 1/2 or less of the rated speed. The travel speed of the car 12 can be detected by the speed monitoring device 22 of the inverter 21 and the encoder 25 of the hoist 23 .

As described above, by reducing the travel speed of the car 12 during continuous operation under flooding, the water adhering to the electric cables 18 and the like scatters, and the hoistway 11 and the electric system can be prevented from being flooded.

In the continuous operation under flooding, when the limit flooding detection means 41 shown in FIGS. , and stops the car 12 above a specific floor to stop the operation.

If it is necessary to provide service to the upper floor area UA (the 10th floor and the rooftop floor) shown in FIG. The allowable operation switching means 34 for counterweight flooding is operated (Fig. 6(d)). As a result, the operation of the elevator 10 shifts to Phase 3. In this embodiment, the car control means 20 eliminates the upper floor area UA of the car 122 and allows the second elevator 102 to serve up to the roof floor. The first elevator 101 cannot service the rooftop floor and the second elevator 102 can service the 9th and 10th floors of the upper floor area UA. It is possible to execute permissible operation when the weight is submerged.

When the car 122 moves to the 10th floor or the roof floor during the counterweight submerged allowable operation, the counterweight 132 naturally descends into the submerged area FA as shown in FIG. 2(b). When the counterweight 132 lands on the water, the impact is transmitted to the car 122 and the hoistway 11 connected by the main rope 15 . In addition, water splashes around when the counterweight 132 lands on the water. The occurrence of such impact and water exposure is not preferable for the operation of the elevator 10 .

As described above, the speed of the car 122 is set lower than the rated speed during continuous operation during flooding. Before the weight 132 enters the submerged area FA, the traveling speed of the car 122 is made lower than that during continuous operation during flooding. For example, the speed of the car 122 is set to 1/3 to 1/2 or less of the continuous operation speed during flooding. As a result, the impact caused by the counterweight 132 landing on water and the scattering of water can be reduced, and the counterweight submerged allowable operation can be safely performed.

More preferably, the car control means 20 temporarily stops the car 122 before the counterweight 132 enters the submerged area FA, and then causes the car 122 to travel at the above-described low speed or even lower speed. As a result, it is possible to more reliably prevent the counterweight 132 from landing on water and to prevent splashing of water, and to safely perform the allowable operation when the counterweight is submerged.

As described above, the speed of the car 122 is controlled or the car 122 is stopped immediately before the counterweight 132 lands on the water in the continuous operation during flooding (phase 2) and the allowable operation during counterweight flooding (phase 3). As a result, the impact on the cage 122 can be suitably reduced, and the scattering of water can be reduced.

When shifting to "continuous operation during flooding" (Phase 2), simply limiting the service floors of the car 12 to floors with a maximum flood height L or higher, and furthermore, speed control, etc., may not be sufficient. Of the electrical systems such as the safety devices, electrical equipment, and switches, the electrical system on the submerged side in the submerged area FA may be submerged, submerged, and short-circuited.

Therefore, in the present invention, the flooded side electrical system in the flooded area FA is electrically disconnected when switching to continuous operation during flooding. Correspondingly, the electrical system on the non-flooded side above the maximum submergence height L and the equipment to be operated as a substitute for the equipment in the submerged area FA are connected. The switching can be triggered by the operation of the submerged continuous operation switching means 32 and 33 or the detection of submergence by the submerged detection means 42 . Specific examples are shown below.

First, a safety device required for operation of the elevator 10 will be described. To reiterate, the safety device includes a flooded side safety device 52 that is a flooded side electrical system and a non-flooded side safety device 53 that is a non-flooded side electrical system. As shown in FIG. 4, the flooded side safety device 52 includes a final limit switch 45 and a flooded side landing door switch 47, and the non-flooded side safety device 53 includes a final limit switch 46 at the time of flooding and a non-flooded side landing door switch 48. is.

Among these safety devices 52 and 53, during normal operation, as shown in FIG. A safety circuit 50 is constructed. These are indicated by thick frames in FIG. A terminal of the normal safety circuit 50 is connected to the car control means 20 . That is, during normal operation, the normal safety circuit 50 functions as a safety circuit, and the hoisting machine 23 can be operated with all of the switches 45, 47, and 48 closed. When any one of the switches 45, 47, 48 is opened, the operation of the hoisting machine 23 is blocked.

During continuous operation during flooding in phase 2 (including permissible operation during counterweight flooding in phase 3), the non-flooding side safety device 53 (flooding final limit switch 46 and non-flooding hall door switch 48) Although there is no danger, there is a risk of flooding or flooding because the flooding side safety devices 52 (the final limit switch 45 and the flooding side landing door switch 47) are arranged in the flooded area FA. If the switches 45 and 47 arranged in the submerged area FA remain in the safety circuit during continuous operation under flooding that permits operation of the car 12, the safety circuit malfunctions and the elevator 10 cannot operate.

Therefore, in the present invention, as shown in FIG. 2, the final limit switch 45 and the flooded landing door switch 47 arranged in the submerged area FA are separated from the safety circuit. A non-flooding side landing door switch 48 which is not affected by flooding and a flooding final limit switch 46 required for continuous operation during flooding are connected in series as a substitute for the final limit switch 45 to form a flood safety circuit 51. - 特許庁These are indicated by the dashed-dotted frame in FIG.

Specifically, as shown in FIGS. 4 and 5, the final limit switch 45 and the flooded side landing door switch 47 are connected in series with the non-flooded side landing door switch 48 in the normal time safety circuit 50 to disconnect the safety circuit. Means 61 (composed of relays and switches) is arranged, and as shown in FIG. Disconnect from the landing door switch 48.

After that, the submerged final limit switch 46 and the non-submerged landing door switch 48 are connected in series to form a submerged safety circuit 51 . Specifically, as shown in FIG. 5(a), a safety circuit connecting means 62 (composed of a relay and a switch) which is normally disconnected is provided in the normal safety circuit 50, and the safety circuit disconnecting means 5(b), the safety circuit connection means 62 is connected, and the final limit switch 46 at the time of flooding and the boarding door switch 48 on the non-flooding side are connected in series. As a result, the non-flooded side landing door switch 48, which is not affected by flooding even when flooded, and the submerged final limit switch 46, which is necessary to allow the car 12 to travel above the submerged area FA, are operated to ensure safety on the non-flooded side. As the device 53, a non-submersion safety circuit 51 can be configured.

The safety circuit disconnecting means 61 and the safety circuit connecting means 62 can be disconnected by the safety circuit switching means 60 shown in FIG. The safety circuit switching means 60 can be provided at a position higher than the maximum submergence height L, for example, at a specific floor where the car 12 retreats, and can be a key switch that can be operated by a building manager. Although the safety circuit switching means 60 can be arranged independently on the operation panel 30, for example, it is interlocked with the continuous operation switching means 32 and 33 at the time of flooding shown in FIG. It is desirable to operate with this as a trigger. That is, from FIG. 6B, the continuous operation switching means 32 and 33 at the time of flooding are operated to show FIG. 6C, or the flooding detection means 42 in FIGS. The circuit is switched from the normal safety circuit 50 shown in FIG. 5(a) to the flood safety circuit 51 shown in FIG. 5(b).

Various switches of the safety circuits 50 and 51 have been described above. The device 54 is disconnected. Even if the safety circuits 50 and 51 are switched, if the submerged electrical equipment 54 remains in the electrical system in a submerged state, it will short-circuit or malfunction, and as a result the elevator 10 cannot continue to operate. Therefore, in the present invention, as shown in FIG. 4, between the car control means 20 and the flooded side electrical equipment 54, an electrical equipment disconnecting means 63 (consisting of a switch and a relay) that interlocks with the safety circuit disconnecting means 61 is provided. prepare. Then, the electric equipment disconnecting means 63 is interlocked with the continuous operation switching means 32, 33 at the time of flooding and the safety circuit switching means 60 in FIG. Also, it is operated by operating other key switches or the like. As a result, the electric equipment disconnecting means 63 can disconnect the electric equipment 54 on the flooded side from the car control means 20, so that the elevator 10 can be operated without being affected by the short circuit due to the flooding of the electric equipment 54 on the flooded side. can do.

Also, the flooded side electrical system other than the flooded side electrical device 54 is disconnected or switched to a substitute device as necessary. For example, as shown in FIGS. 3 and 4, the limit switch 43 (the electrical system on the flooded side) is switched to the limit switch 44 (the electrical system on the non-flooded side) at the time of flooding. Specifically, a limit switch disconnecting means 64 (consisting of a switch and a relay) is provided between the car control means 20 and the limit switch 43, and a flood limit switch connecting means 65 is provided between the car control means 20 and the limit switch 44. Deploy. Only the limit switch 43 is operated with the limit switch disconnecting means 64 normally connected and the limit switch connecting means 65 at the time of flooding disconnected. During flooding, as shown in FIG. 3, the limit switch disconnecting means 64 is disconnected and the limit switch connecting means 65 for flooding is connected, so that the car 12 is moved to the limit for flooding at a position higher than the maximum flood height L. Switch 44 determines the lowest floor. The limit switch disconnecting means 64 can be configured to interlock with the safety circuit disconnecting means 61 , and the flood limit switch connecting means 65 can be configured to interlock with the safety circuit connecting means 62 . Also, these may be triggered by detection of water intrusion by the water ingress detection means 42 .

If the hoistway 11 is flooded before the final limit switch 45 and the flooded landing door switch 47 are separated by the safety circuit disconnecting means 61, the flooded side safety device 52 (flooded side electrical system) When submerged in water, the non-submerged side safety device 53 (non-submerged side electrical system), various safety circuits beyond it, the car control means 20, etc. are short-circuited. The safety circuit 51 may not function. Therefore, breaker means are provided in the safety circuits 50 and 51 as indicated by reference numeral 70 in FIG.

FIG. 7 is a circuit diagram showing the configuration of the breaker means 70, in which (a) shows the circuit state during normal operation and (b) shows the circuit state during continuous operation during flooding. More specifically, the breaker means 70 connects a normal breaker 71 and an emergency breaker 72 in parallel via a normal relay 66 and an emergency relay 67, respectively. During normal operation, as shown in FIG. 7A, the normal relay 66 is connected, the normal breaker 71 is activated, and the emergency relay 67 is disconnected. On the other hand, during flooded operation, as shown in FIG. 7B, the normal relay 66 is disconnected and the emergency relay 67 is connected so that the emergency breaker 72 functions.

As the hoistway 11 is flooded with water, the final limit switch 45 and the flooded landing door switch 47 may short-circuit and the normal breaker 71 may trip. In this case, when the safety circuit switching means 60 is operated and the safety circuit disconnecting means 61 is operated, or when the water intrusion detection means 42 detects water intrusion as a trigger, as shown in FIG. , the normal relay 66 is disconnected and the normal breaker 71 that may have tripped is disconnected. The normal relay 66 can be disconnected by the safety circuit disconnecting means 61 or in conjunction with the safety circuit disconnecting means 61 or the like.

Then, when the safety circuit connecting means 62 is operated to connect the flooded final limit switch 46 and the non-flooded landing door switch 48 in series, the emergency breaker 72 is connected (FIG. 7(b)). )). The emergency relay 67 can be connected and operated by the safety circuit connection means 62 or in conjunction with the safety circuit connection means 62 or the like. As a result, even if the normal breaker 71 has tripped, the flood safety circuit 51 does not manually restore the normal breaker 71, and the emergency breaker 72 that has not tripped prevents the car control means 20 from contacting the car control means 20. Can be connected in series.

Although not shown, when the flooded side electrical equipment 54 (flooded side electrical system) and the non-flooded side electrical equipment 55 (non-flooded side electrical system) are connected in parallel, the breaker means 70 similar to the above is controlled by the car. It is arranged between the means 20 and the electrical equipment 54, 55, and after the electrical equipment 54 on the flooded side is disconnected by the electrical equipment disconnecting means 63, the electrical equipment 55 on the non-flooded side is connected to the car control means 20 by an emergency breaker. You may make it

Similarly, although not shown, between the car control means 20, the limit switch disconnecting means 64, and the limit switch connecting means 65 for flooding, a breaker means 70 similar to the above is arranged, and the limit switch disconnecting means After the limit switch 43 is disconnected by 64, the submerged limit switch connecting means 65 is connected, and the emergency breaker 72 connects the submerged limit switch 44 and the car control means 20.

As described above, regarding various safety devices, electrical equipment, and switches during submerged operation, equipment on the submerged side in the submerged area FA is disconnected, and equipment on the non-submerged side located above the maximum submerged height L and Equipment that replaces equipment in the FA allows the elevator 10 to continue operating even during flooding.

The above description of the embodiments is for the purpose of explaining the present invention, and should not be construed as limiting the invention described in the claims or narrowing the scope. Further, the configuration of each part of the present invention is not limited to the above-described embodiment, and it is of course possible to make various modifications within the technical scope of the claims.

For example, the configuration of the elevator 10 is an example, and various modifications are possible for each functional block, circuit configuration, and the like described above.

Further, it goes without saying that continuous operation during flooding can be performed by functioning or executing only some of the above-described embodiments, not all of them.

Furthermore, flood detection means 40, 41, flood detection means 42, 42a, limit switches 43, 44, final limit switches 45, 46, landing door switches 47, 48, safety circuits 50, 51, safety devices 52, 53, electrical equipment By providing 54, 55, etc. in multiple stages, the applicable submergence height can also be made into multiple stages.

In this case, for example, a plurality of flood limit switches 44 are arranged at different heights, and when the flood detection means 42a below the flood detection means 42 detects the flood, the flood detection means 42a below the flood detection means 42a detects the flood. The time limit switch 44 can be configured to be switched to the upper time limit switch 44 in order.

10 Elevator 12 Car 13 Counterweight 20 Car control means 30 Operation panel 31 Forced submersion control operation switching means 32, 33 Inundation continuous operation switching means 34 Counterweight inundation allowable operation switching means 42 Inundation detection means 45 Final limit switch (inundation side electrical system)
46 Flooded final limit switch (non-flooded electrical system)
50 Normal safety circuit 51 Flooding safety circuit 52 Flooding side safety device (flooding side electrical system)
53 Non-flooded side safety device (Non-flooded side electrical system)
54 Flooded side electrical equipment (flooded side electrical system)
55 Electrical equipment on the non-flooded side (electrical system on the non-flooded side)
60 Safety circuit switching means 70 Breaker means L Maximum flood height FA Flood area UA Upper floor area

The flooded side electrical system is connected to the car control means and includes one or more flooded side electrical devices arranged below the maximum submerged height, and the non-submerged side electrical system is connected to the maximum submerged height. is one or more non- submerged electrical devices arranged above,
The disconnecting means can disconnect the flooded-side electrical equipment from the car control means when the flooding detecting means detects the flooding.

A plurality of the submergence detection means and the limit switches are arranged at different heights up to the maximum submergence height,
The disconnecting means may be configured to disconnect the limit switch located below the flooding detection means from the car control means when the flooding detection means located below the flood height detects the flooding.

Claims (7)

An elevator comprising car control means for operating a hoist to control operation of the car in a hoistway,
Flooding detection means connected to the car control means and arranged at a position up to a maximum flood height at which flooding of the hoistway is permitted;
A submerged side electrical system electrically connected to the car control means and arranged below the maximum submerged height of the hoistway, and a non-submerged side electrical system located above the maximum submerged height; has
disconnecting means for disconnecting the flooded-side electrical system from the car control means when the water intrusion detection means detects water intrusion;
elevator. A plurality of the submergence detection means are arranged at different heights up to the maximum submergence height,
The disconnection means disconnects the flooded side electrical system below each flood detection means according to the flood height,
2. Elevator according to claim 1. It is connected to the car control means and has a safety circuit for operating the car, and the flooding side electrical system is one or more flooding side safety devices arranged below the maximum flooding height, , the non-submerged side electrical system is one or a plurality of non-submerged side safety devices arranged above the maximum submerged height, and the submerged side electrical system and the non-submerged side electrical system are connected in series and normally When the safety circuit is configured,
the disconnecting means is a safety circuit disconnecting means for disconnecting the flood-side safety device from the normal safety circuit;
A safety circuit connection means is provided for connecting the non-submerged side safety devices to each other in series with the car control means to form a flood safety circuit after the safety circuit disconnection means has disconnected the submerged side safety device. ,
The elevator according to claim 1 or 2. The flooded side electrical system is connected to the car control means and includes one or more flooded side electrical devices arranged below the maximum submerged height, and the non-submerged side electrical system is connected to the maximum submerged height. is also one or more flooded side electrical devices arranged above,
The disconnecting means disconnects the flooded-side electrical equipment from the car control means when the flooding detection means detects flooding.
2. Elevator according to claim 1. The submerged side electrical system is a limit switch for detecting the movement limit of the lower floor side of the car, and the non-submerged side electrical system is located at a position higher than the maximum submerged height, It is a limit switch at the time of flooding that detects the movement limit of
The elevator according to claim 1 or 2. A plurality of the flood detection means and the flood limit switches are arranged at different heights up to the maximum flood height,
The disconnecting means disconnects the submerged side limit switch connected to the car control means according to the flood height.
6. Elevator according to claim 5. The hoist and car control means are arranged above the maximum submerged height,
The elevator according to any one of claims 1 to 6.

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