JP7032613B2 - Elevator device and its door position detection device - Google Patents

Description

The present invention relates to an elevator device and a door position detection device thereof.

In a conventional elevator system, when the car is stopped on a floor other than the lowest floor and the landing door on the lowest floor is opened, the operation mode of the car is switched to the maintenance work mode (for example, Patent Document). 1).

Japanese Unexamined Patent Publication No. 2007-276896

In the conventional elevator system as described above, the open detection contacts of the landing doors on a plurality of floors are connected in series with each other. Therefore, when the car door and the landing door are open on the stop floor of the car, it cannot be detected that the landing door is open on a floor other than the stop floor of the car. Therefore, it is difficult to control according to the open / closed state of a specific elevator door.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to obtain an elevator device capable of performing control according to an open / closed state of a specific elevator door and a door position detecting device thereof. do.

The elevator device according to the present invention is a door position detecting device for detecting that the landing door for opening and closing a specific landing entrance / exit, which is an entrance / exit for a worker to a car, a hoistway pit, has moved from a fully closed position, and a door position detecting device. It is equipped with a control device that controls the operation of the car based on the signal from, and the control device is equipped with a door position detection device from the fully closed position when the car is not stopped on the floor where the specific landing entrance / exit is located. When it is detected that the car has moved and the operation mode is the automatic operation mode, the car operation is blocked, the car activation is blocked, and then the operation mode is switched to the manual operation mode. , Only the manual operation of the car by the operation in the hoistway pit is permitted, and at the same time, the operation from a third party other than the operator in the hoistway pit is invalidated, and the door position detection device is on the hoistway side of the landing door. It has a moving member provided in the yard and a light projecting unit and a light receiving unit fixed to the outside of the landing door in the opening / closing operation direction with respect to the specific landing door. When the detection light is emitted diagonally with respect to the direction and the horizontal plane and the landing door moves from the fully closed position to the open direction, the moving member moves together with the landing door, so that the state of the moving member with respect to the optical path of the detected light is the optical path. The light receiving part changes from one of the two states of intersecting with and out of the optical path to the other, and the light receiving unit receives the detected light and the detected light in response to the change of the two states of the moving member. It changes from one of the two states, the unreceived state, to the other .
Further, the elevator device according to the present invention includes a car, a door position detecting device for detecting that the landing door for opening and closing a specific landing entrance / exit, which is an entrance / exit for a worker to the hoistway pit, has moved from a fully closed position, and a door position. It is equipped with a control device that controls the operation of the car based on the signal from the detection device, and the control device fully closes the landing door by the door position detection device when the car is not stopped on the floor where the specific landing entrance is located. When it is detected that the vehicle has moved from the position and the operation mode is the manual operation mode, only the manual operation of the car by the operation in the hoistway pit is permitted for the car operation, and at the same time, the car is in the hoistway pit. The operation from a third party other than the operator is invalidated, and the door position detection device is outside the landing door opening / closing operation direction with respect to the moving member provided on the hoistway side of the landing door and the specific landing entrance / exit. It has a light emitting part and a light receiving part fixed to the landing door, and the light emitting part emits detection light diagonally with respect to the opening / closing operation direction of the landing door and the horizontal plane, and the landing door is opened from the fully closed position. When moving, the moving member moves together with the landing door, so that the state of the moving member with respect to the optical path of the detected light changes from one of the two states of intersecting the optical path and the state of being out of the optical path to receive light. The unit changes from one of the two states, the state of receiving the detection light and the state of not receiving the detection light, to the other in response to the change of the two states of the moving member .
Further, the door position detecting device of the elevator device according to the present invention has a moving member provided on the hoistway side of the elevator door and a light projecting unit fixed to the outside of the elevator door in the opening / closing operation direction with respect to the entrance / exit. The light projecting unit emits detection light obliquely with respect to the opening / closing operation direction and the horizontal plane of the elevator door, and when the elevator door moves from the fully closed position to the opening direction, the moving member moves the elevator door. By moving together, the state of the moving member with respect to the optical path of the detected light changes from one of the two states of the state of intersecting the optical path and the state of being out of the optical path to the other, and the light receiving portion has two moving members. Corresponding to the change of the state, the state changes from one of the two states of the state of receiving the detected light and the state of not receiving the detected light to the other.

According to the present invention, control can be performed according to the open / closed state of a specific elevator door.

It is a schematic block diagram which shows the elevator apparatus by Embodiment 1. FIG. It is a front view which shows the door position detection device of FIG. It is a circuit diagram which shows the main part of the elevator apparatus of FIG. It is a flowchart which shows the operation restriction operation by the elevator control device of FIG. It is a front view which shows the optical sensor and the sensor holder of FIG. It is a top view which shows the sensor holder of FIG. It is a top view which shows the door position detection apparatus by Embodiment 2. FIG. It is a front view which shows the door position detection device of FIG. It is a front view which shows the door position detection apparatus by Embodiment 3. FIG.

Hereinafter, embodiments will be described with reference to the drawings.
Embodiment 1.
FIG. 1 is a schematic configuration diagram showing an elevator device according to the first embodiment. In the figure, a machine room 2 is provided above the hoistway 1. In the machine room 2, a hoisting machine 3, a deflecting wheel 4, and an elevator control device 5 are installed.

The hoist 3 has a drive sheave 6, a hoist motor (not shown), and a hoist brake (not shown). The hoist motor rotates the drive sheave 6. The hoist brake keeps the drive sheave 6 stationary. Further, the hoist brake brakes the rotation of the drive sheave 6.

A suspension body 7 is wound around the drive sheave 6 and the deflecting wheel 4. As the suspension body 7, a plurality of ropes or a plurality of belts are used. A car 8 is connected to the first end of the suspension body 7. A balance weight 9 is connected to the second end of the suspension body 7.

The car 8 and the balance weight 9 are suspended in the hoistway 1 by the suspension body 7. Further, the car 8 and the balance weight 9 move up and down in the hoistway 1 by rotating the drive sheave 6.

The elevator control device 5 controls the operation of the car 8 by controlling the hoisting machine 3. Further, the elevator control device 5 calculates the state of the car 8 based on signals from a plurality of sensors (not shown). The state of the car 8 includes the position, speed, acceleration, and traveling direction of the car 8.

A pair of car guide rails (not shown) and a pair of balanced weight guide rails (not shown) are installed in the hoistway 1. The pair of car guide rails guides the car 8 to move up and down. The pair of balanced weight guide rails guide the ascending and descending of the balanced weight 9.

The car 8 has a car frame 10 and a car room 11. A suspension body 7 is connected to the car frame 10. The car room 11 is supported by the car frame 10. A pair of car doors 12 are provided on the front surface of the car room 11. A door controller 13 for controlling the opening / closing operation of the car door 12 is provided on the car 8.

A pair of landing doors 14 are provided at each of the landings on the plurality of floors. The landing door 14 opens and closes in conjunction with the car door 12 when the car 8 lands. Further, the pair of landing doors 14 open and close in conjunction with each other.

A hoistway pit 1a is provided at the lowermost part of the hoistway 1. A car shock absorber 15 and a balance weight shock absorber 16 are installed on the floor of the hoistway pit 1a.

When the worker performs maintenance work in the hoistway pit 1a, the worker manually moves the landing door 14 on the lowest floor with the car 8 moved to a floor higher than the lowest floor. Enter the hoistway pit 1a from the platform entrance on the bottom floor. That is, the specific landing entrance / exit that is the entrance / exit of the worker to the hoistway pit 1a is the landing entrance / exit on the lowest floor.

A pit switch 17 is provided in the hoistway pit 1a. The pit switch 17 is operated by an operator at the start and end of maintenance work in the hoistway pit 1a.

A door position detection device 30 is provided at the landing on the lowest floor. The door position detecting device 30 detects that the landing door 14 on the lowest floor has moved from the fully closed position. The elevator control device 5 controls the operation of the car 8 based on the signal from the door position detection device 30.

FIG. 2 is a front view showing the door position detection device 30 of FIG. A landing threshold 18 is installed at the landing. A landing threshold groove 18a is provided on the upper surface of the landing threshold 18. The landing threshold groove 18a is continuously provided along the opening / closing operation direction of the landing door 14. The opening / closing operation direction of the landing door 14 is the width direction of the landing entrance / exit, and is the left-right direction in FIG.

The door position detection device 30 has an optical sensor 31 as a light emitting unit and a light receiving unit, a sensor holder 32, and a retroreflector 33 as a moving member.

The optical sensor 31 emits the detection light obliquely with respect to the opening / closing operation direction of the landing door 14. In this example, the optical sensor 31 emits the detection light diagonally upward with respect to the horizontal plane. Further, the optical sensor 31 is held by the sensor holder 32.

The sensor holder 32 is fixed to the door pocket side end of the landing threshold 18. That is, the optical sensor 31 is fixed to the door pocket side end of the landing threshold 18 via the sensor holder 32.

The retroreflective plate 33 is fixed to the end surface of the landing door 14 on the door pocket side. Further, the retroreflective plate 33 is arranged at a position higher than that of the optical sensor 31. Further, the retroreflective plate 33 reflects the detected light from the optical sensor 31 in parallel with the incident direction.

Further, the retroreflective plate 33 moves together with the landing door 14 when the landing door 14 is opened and closed. As a result, the state of the retroreflective plate 33 with respect to the optical path of the detected light changes between the state of intersecting the optical path and the state of being out of the optical path.

In this example, when the landing door 14 is in the fully closed position, the retroreflector 33 intersects the optical path of the detection light. That is, when the landing door 14 is located in the fully closed position, the detection light from the optical sensor 31 is applied to the retroreflective plate 33. Then, the optical sensor 31 receives the detection light reflected by the retroreflective plate 33.

When the landing door 14 moves from the fully closed position to the door pocket side by a set amount or more, the retroreflective plate 33 deviates from the optical path of the detected light and the detected light becomes the retroreflective plate 33 as shown by the two-dot chain line in FIG. It will not be irradiated. As a result, the reflected light from the retroreflective plate 33 is not incident on the optical sensor 31. The set amount is set to a value smaller than the size that the operator can pass through the entrance / exit of the landing, for example, 300 mm or less.

FIG. 3 is a circuit diagram showing a main part of the elevator device of FIG. The power supply box 21 houses the power supply device 22, the first relay unit 23, and the second relay unit 24. The power supply device 22 converts the electric power supplied from the elevator control device 5 into direct current and supplies it to the optical sensor 31.

The pit switch 17 is connected to the first relay unit 23. The optical sensor 31 is connected to the second relay unit 24. The first contact , which is a normally closed contact of the first relay unit 23, and the second contact, which is a normally closed contact of the second relay unit 24, are connected in series to the elevator control device 5.

Here, a procedure for an operator to perform maintenance work in the hoistway pit 1a will be described. First, the worker gets on the car 8 and moves the car 8 to the lowest floor. Subsequently, the operator operates an operation mode changeover switch (not shown) in the car 8 to switch the operation mode to the manual operation mode.

After that, the worker moves to the lowest floor landing and operates a maintenance computer (not shown) to move the car 8 to a floor other than the lowest floor, for example, the second floor. Then, the operator switches the operation mode to the pit-in mode.

The pit-in mode is a mode in which only the manual operation of the car 8 by the operation in the hoistway pit 1a is permitted. Therefore, when the operation mode is the pit-in mode, the operation from a third party other than the operator in the hoistway pit 1a is invalidated.

After that, the operator operates an unlocking device (not shown) on the lowest floor to manually move the landing door 14 in the opening direction. Then, the operator operates the pit switch 17 and operates the main power switch (not shown). After that, the worker enters the hoistway pit 1a and performs maintenance work. The procedure for returning work after the maintenance work is completed is the reverse of the above procedure.

FIG. 4 is a flowchart showing an operation restriction operation by the elevator control device 5 of FIG. When the door position detection device 30 detects that the landing door 14 on the lowest floor has moved from the fully closed position, the elevator control device 5 executes an operation restriction operation.

When the operation restriction operation is started, the elevator control device 5 determines in step S101 whether or not the car 8 is located on the lowest floor. When the car 8 is stopped on the lowest floor, the elevator control device 5 ends the processing of the operation restriction operation.

When the car 8 is located on a floor other than the lowest floor, the elevator control device 5 determines in step S102 whether the operation mode is the automatic operation mode. The automatic operation mode is a mode in which the car 8 is automatically moved in response to a call from the landing on each floor and the designation of the destination floor in the car 8. When the operation mode is the automatic operation mode, the elevator control device 5 prevents the car 8 from starting in step S103.

After blocking the activation of the car 8, the elevator control device 5 monitors in step S104 whether the operation mode is switched to the manual operation mode. The elevator control device 5 continues to prevent the car 8 from starting until the operation mode is switched to the manual operation mode.

If it is determined in step S102 that the operation mode is not the automatic operation mode, the elevator control device 5 determines in step S104 whether the operation mode is the manual operation mode.

When it is determined in step S104 that the operation mode is the manual operation mode, the elevator control device 5 switches the operation mode to the pit-in mode in step S105, and only manually operates the car 8 by the operation in the hoistway pit 1a. Allow.

After that, the elevator control device 5 monitors in step S106 whether or not the normal release operation has been performed. The elevator control device 5 maintains the pit-in mode until a normal release operation is performed. When the regular release operation is performed, the elevator control device 5 ends the operation restriction operation.

In this way, the elevator control device 5 detects that the landing door 14 on the lowest floor has moved from the fully closed position by the door position detecting device 30 when the car 8 is not stopped on the lowest floor, and , When the operation mode is the automatic operation mode, the start of the car 8 is prevented.

Further, when the operation mode is switched to the manual operation mode after the elevator control device 5 prevents the car 8 from starting, only the manual operation of the car 8 by the operation in the hoistway pit 1a is performed with respect to the operation of the car 8. to approve.

Further, in the elevator control device 5, when the car 8 is not stopped on the lowest floor, the door position detecting device 30 detects that the landing door 14 on the lowest floor has moved from the fully closed position, and the elevator control device 5 operates. When the mode is the manual operation mode, only the manual operation of the car 8 by the operation in the hoistway pit 1a is permitted with respect to the operation of the car 8.

The function of such an elevator control device 5 can be realized by, for example, a microcomputer.

Next, the configuration of the sensor holder 32 will be described. FIG. 5 is a front view showing the optical sensor 31 and the sensor holder 32 of FIG. Further, FIG. 6 is a plan view showing the sensor holder 32 of FIG. 5, and shows a state in which the optical sensor 31 is removed.

The sensor holder 32 has a base portion 34 and a holding plate 35. The base portion 34 has a first member 36, a second member 37, and an adjusting bolt 38. A part of the first member 36 and the whole of the second member 37 are inserted in the landing threshold groove 18a. As shown in FIG. 5, the lower surface of the base portion 34 faces the bottom surface of the landing threshold groove 18a at intervals.

As shown in FIG. 6, the first member 36 has a through hole 36a and a first inclined surface 36b. An adjusting bolt 38 is passed through the through hole 36a.

The second member 37 has a screw hole 37a and a second inclined surface 37b. The tip of the adjusting bolt 38 is screwed into the screw hole 37a. The second inclined surface 37b is in contact with the first inclined surface 36b.

By screwing the adjusting bolt 38 into the screw hole 37a, the second member 37 moves relative to the first member 36 diagonally downward to the right in FIG. As a result, the first member 36 is pressed against one side wall of the landing threshold groove 18a, the second member 37 is pressed against the other side wall of the landing threshold groove 18a, and the base portion 34 is fixed to the landing threshold 18. Be done.

The holding plate 35 has a flat plate-shaped fixing portion 35a and a flat plate-shaped holding portion 35b. The fixing portion 35a is fixed on the first member 36 by a plurality of fixing screws 39.

The holding portion 35b projects upward at a right angle from the fixing portion 35a. The optical sensor 31 is held in the holding portion 35b by the lower screw 50 and the upper screw 51.

Further, the holding portion 35b has a lower hole (not shown) and a plurality of upper holes 35c. The lower screw 50 is passed through the lower hole. The upper screw 51 is passed through one of the plurality of upper holes 35c. By selecting the upper hole 35c through which the upper screw 51 is passed, the inclination angle of the optical sensor 31 centered on the lower screw 50 can be selected.

In such an elevator device, when the car 8 is not stopped on the lowest floor, the door position detecting device 30 detects that the landing door 14 on the lowest floor has moved from the fully closed position, and the operation mode is used. When is in the automatic operation mode, the start of the car 8 is blocked. Therefore, control can be performed according to the open / closed state of a specific elevator door, that is, the landing door 14 on the lowest floor.

Further, it is possible to more reliably prevent the car 8 from being moved by an operation other than the operator in the hoistway pit 1a while the worker is in the hoistway pit 1a.

Further, when the operation mode is switched to the manual operation mode after blocking the activation of the car 8, only the manual operation of the car 8 by the operation in the hoistway pit 1a is permitted. Therefore, even after the start of the car 8 is prevented, the manual operation of the car 8 in the hoistway pit 1a can be enabled by the operation of the operator.

Further, when the car 8 is not stopped on the lowest floor, the door position detection device 30 detects that the landing door 14 on the lowest floor has moved from the fully closed position, and the operation mode is the manual operation mode. If so, only manual operation of the car 8 by operation in the hoistway pit 1a is permitted. Therefore, control can be performed according to the open / closed state of a specific elevator door, that is, the landing door 14 on the lowest floor.

Further, it is possible to more reliably prevent the car 8 from being moved by an operation other than the operator in the hoistway pit 1a while the worker is in the hoistway pit 1a.

Further, the optical sensor 31 emits the detection light obliquely with respect to the opening / closing operation direction of the landing door 14. Further, the retroreflective plate 33 moves together with the landing door 14 when the landing door 14 is opened and closed. As a result, the state of the retroreflective plate 33 with respect to the optical path of the detected light changes between the state of intersecting the optical path and the state of being out of the optical path.

Therefore, it is possible to detect whether or not the landing door 14 is located within the set range by a simple configuration without using a distance measuring sensor. Thereby, the signal from the door position detection device 30 can be used to control the specific elevator door, that is, the landing door 14 on the lowest floor according to the open / closed state.

Further, a combination of an optical sensor 31 that also serves as a light projecting unit and a light receiving unit and a retroreflective plate 33 is used. Therefore, wiring between the door position detection device 30 and the elevator control device 5 can be easily performed.

Further, the door position detection device 30 can be easily additionally installed in the existing elevator device.

Further, the optical sensor 31 can be easily attached to the landing threshold 18 by using the landing threshold groove 18a.

Further, since the holding portion 35b is provided with a plurality of upper holes 35c, the installation angle of the optical sensor 31 can be easily selected.

Further, the sensor holder 32 of the first embodiment can be applied to both the right-handed and left-handed landing doors 14.

Further, the lower surface of the base portion 34 faces the bottom surface of the landing threshold groove 18a at intervals. Therefore, it is possible to prevent dust from accumulating in the landing threshold groove 18a.

Embodiment 2.
Next, FIG. 7 is a plan view showing the door position detection device according to the second embodiment. FIG. 8 is a front view showing the door position detection device of FIG. 7. The door position detection device 40 of the second embodiment has a floodlight 41 as a light projector, a light receiver 42 as a light receiving unit, and a shielding member 43 as a moving member.

The floodlight 41 is provided at the first end of the landing threshold 18 in the opening / closing operation direction of the landing door 14. Further, the floodlight 41 emits the detected light obliquely with respect to the opening / closing operation direction of the landing door 14. In this example, the floodlight 41 emits the detected light diagonally upward with respect to the horizontal plane.

The light receiver 42 is provided at the second end of the landing threshold 18 in the opening / closing operation direction of the landing door 14 via the support column 44. Further, the light receiver 42 is arranged at a position higher than that of the floodlight 41. Further, the photodetector 42 receives the detected light from the projector 41.

The shielding member 43 is provided on one of the landing doors 14 of the pair of landing doors 14 on the lowest floor. Further, the shielding member 43 moves together with the landing door 14 when the landing door 14 is opened and closed. As a result, the state of the shielding member 43 with respect to the optical path of the detected light changes between the state of intersecting the optical path and the state of being out of the optical path.

The shielding member 43 reduces the amount of light received by the photodetector 42 when it intersects the optical path of the detected light. In this example, when the shielding member 43 intersects the optical path of the detection light, the shielding member 43 shields the detection light and makes the amount of the detected light received by the photodetector 42 zero.

When the landing door 14 is located in the fully closed position, the shielding member 43 is out of the optical path of the detection light. That is, when the landing door 14 is located in the fully closed position, the light receiver 42 receives the detected light from the floodlight 41.

When the landing door 14 moves from the fully closed position to the door pocket side by a set amount or more, the shielding member 43 intersects the optical path of the detected light, as shown by the two-dot chain line in FIG. As a result, the detected light from the projector 41 is shielded by the shielding member 43 and is not incident on the receiver 42. The shielding member 43 intersects the optical path of the detection light until the landing door 14 moves to the fully open position. Other configurations and operations are the same as those in the first embodiment.

Even with such a door position detection device 40, control can be performed according to the open / closed state of a specific elevator door, that is, the landing door 14 on the lowest floor.

Further, it is possible to more reliably prevent the car 8 from being moved by an operation other than the operator in the hoistway pit 1a while the worker is in the hoistway pit 1a.

Further, the floodlight 41 emits the detected light obliquely with respect to the opening / closing operation direction of the landing door 14. Further, the shielding member 43 moves together with the landing door 14 when the landing door 14 is opened and closed. As a result, the state of the shielding member 43 with respect to the optical path of the detected light changes between the state of intersecting the optical path and the state of being out of the optical path.

Therefore, it is possible to detect whether or not the landing door 14 is located within the set range by a simple configuration without using a distance measuring sensor. Thereby, the signal from the door position detection device 40 can be used to control the specific elevator door, that is, the landing door 14 on the lowest floor according to the open / closed state.

Further, the door position detection device 40 can be easily additionally installed in the existing elevator device.

Embodiment 3.
Next, FIG. 9 is a front view showing the door position detection device according to the third embodiment. The shielding member 43 of the third embodiment intersects with the optical path of the detection light when the landing door 14 is located at the fully closed position. When the landing door 14 moves from the fully closed position to the door pocket side by a set amount or more, the shielding member 43 deviates from the optical path of the detected light as shown by the two-dot chain line in FIG. Other configurations and operations are the same as those in the second embodiment.

Even with such a configuration, the same effect as that of the second embodiment can be obtained.

When the moving members of the second and third embodiments intersect with the optical path of the detected light, the detected light may not be completely shielded and the amount of transmitted detected light may be reduced.

Further, in the first to third embodiments, the light projecting unit emits the detected light diagonally upward with respect to the horizontal plane, but the light projecting unit may emit the detected light diagonally downward with respect to the horizontal plane.

Further, the location where the light projecting unit and the light receiving unit are installed is not limited to the landing threshold.

In addition, the specific landing entrance / exit is not limited to the landing entrance / exit on the lowest floor.

Further, the detection target of the door position detecting device may be a landing door on a floor other than the lowest floor, or a car door.

Further, the control according to the open / closed state of a specific elevator door is not limited to the above-mentioned operation limiting operation. That is, the door position detection device can also be used for control other than the above-mentioned operation restriction operation.

Further, the control device that controls according to the open / closed state of a specific elevator door is not limited to the elevator control device. The control device may be, for example, a safety monitoring device or a remote monitoring device.

Further, the number of car doors that open and close the car doorway and the number of landing doors that open and close one landing doorway are not limited to two, and may be, for example, one or four.

Further, the opening / closing method of the car door device and the landing door device may be a single-opening type or a central-opening type.

Further, the configuration of the elevator device is not limited to the configuration shown in FIG. For example, the roping method may be a 2: 1 roping method.

Further, the elevator device may be a machine room-less elevator, a double deck elevator, a one-shaft multi-car type elevator, or the like.

1a hoistway pit, 5 elevator control device, 8 car, 14 landing door (elevator door), 30, 40 door position detection device, 31 optical sensor (light emitting part, light receiving part), 33 retroreflective plate (moving member) , 41 Floodlight (floodlight), 42 Receiver (light receiving section), 43 Shielding member (moving member).

Claims (6)

Basket,
The car is based on a door position detection device that detects that the landing door that opens and closes the specific landing entrance / exit that is the entrance / exit of the worker to the hoistway pit has moved from the fully closed position, and a signal from the door position detection device. Equipped with a control device to control the operation of
The control device is
When the car was not stopped on the floor where the specific landing entrance / exit was located, the door position detecting device detected that the landing door had moved from the fully closed position, and the operation mode was the automatic operation mode. In this case, when the start of the car is blocked, the start of the car is blocked, and then the operation mode is switched to the manual operation mode, the operation of the car is manually performed by operating in the hoistway pit. At the same time as allowing only driving, the operation from a third party other than the worker in the hoistway pit is invalidated .
The door position detection device is
A moving member provided on the hoistway side of the landing door and
With respect to the specific landing entrance / exit, a light emitting unit and a light receiving unit fixed to the outside in the opening / closing operation direction of the landing door.
Have,
The light projecting unit emits the detected light diagonally with respect to the opening / closing operation direction and the horizontal plane of the landing door.
When the landing door moves from the fully closed position to the open direction, the moving member moves together with the landing door, so that the state of the moving member with respect to the optical path of the detected light intersects with the optical path and the optical path. It changes from one of the two states, the state of being out of, to the other,
The light receiving unit is an elevator device that changes from one of two states, a state of receiving the detected light and a state of not receiving the detected light, to the other in response to the change of the two states of the moving member . Basket,
The car is based on a door position detection device that detects that the landing door that opens and closes the specific landing entrance / exit that is the entrance / exit of the worker to the hoistway pit has moved from the fully closed position, and a signal from the door position detection device. Equipped with a control device to control the operation of
The control device is
When the car was not stopped on the floor where the specific landing entrance / exit was located, the door position detection device detected that the landing door had moved from the fully closed position, and the operation mode was the manual operation mode. In this case, regarding the operation of the car, only the manual operation of the car by the operation in the hoistway pit is permitted, and at the same time, the operation from a third party other than the worker in the hoistway pit is invalidated .
The door position detection device is
A moving member provided on the hoistway side of the landing door and
With respect to the specific landing entrance / exit, a light emitting unit and a light receiving unit fixed to the outside in the opening / closing operation direction of the landing door.
Have,
The light projecting unit emits the detected light diagonally with respect to the opening / closing operation direction and the horizontal plane of the landing door.
When the landing door moves from the fully closed position to the open direction, the moving member moves together with the landing door, so that the state of the moving member with respect to the optical path of the detected light intersects with the optical path and the optical path. It changes from one of the two states, the state of being out of, to the other,
The light receiving unit is an elevator device that changes from one of two states, a state of receiving the detected light and a state of not receiving the detected light, to the other in response to the change of the two states of the moving member . A pit switch provided in the hoistway pit,
A first contact that opens when the pit switch is operated, and a second contact that opens when the door position detection device detects that the landing door has moved from the fully closed position. With more contacts
The elevator device according to claim 1 or 2, wherein the first contact and the second contact are connected in series to the control device. Moving members provided on the hoistway side of the elevator door,
A light emitting unit and a light receiving unit fixed to the outside of the elevator door in the opening / closing operation direction are provided for the entrance / exit.
The light projecting unit emits the detected light obliquely with respect to the opening / closing operation direction and the horizontal plane of the elevator door.
When the elevator door moves from the fully closed position to the open direction, the moving member moves together with the elevator door, so that the state of the moving member with respect to the optical path of the detected light intersects with the optical path and the optical path. It changes from one of the two states, the state of being out of, to the other,
The light receiving unit is an elevator device that changes from one of two states, a state of receiving the detected light and a state of not receiving the detected light, to the other in response to the change of the two states of the moving member. Door position detector. The moving member is a retroreflective plate that reflects the detected light when it intersects with the optical path.
The door position detection device for an elevator device according to claim 4 , wherein the light receiving unit receives the detection light emitted from the light projecting unit and reflected by the retroreflective plate. The door position detection device for an elevator device according to claim 4 , wherein the moving member reduces the amount of light received by the detected light in the light receiving unit when the moving member intersects with the optical path.

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