JP2012066901A - Elevator landing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator landing device without generating an erroneous detection due to a foreign substance in a hoistway.SOLUTION: The elevator landing device includes: a landing detector 20 including a light emission unit 21 emitting light and a light receiving unit 22 receiving the light; polarization filters 28 provided on the front surfaces of the light emission unit 21 and the light receiving unit 22, respectively, and transmitting the light in the respective prescribed polarization directions; and a landing detection plate 27 disposed opposite the landing detector 20 in a state where a car 5 arrives at the floor of a landing area 101 and including a reflective part 29 reflecting the light by polarizing the light so that the light transmitted through the polarization filter 28 provided at the light emission unit 21 is transmitted through the polarization filter 28 provided at the light receiving unit 22.

Description

  The present invention relates to an elevator landing apparatus that performs positioning so that a landing sill and a car sill coincide with each other when a car arrives on a floor.

  A conventional elevator landing device is provided with a detector having a light emitting unit provided in a passenger car and a landing detection plate provided in a hoistway for blocking or reflecting light emitted from the detector. The landing position of the car is detected by the detector detecting that the light from the detector is blocked or reflected.

JP 60-223770 A JP 2000-143109 A

  However, in the conventional elevator landing apparatus as described above, the light emitted from the detector is blocked or reflected by foreign matter in the hoistway, installations in the hoistway, hoistway walls, etc. For example, the elevator landing device may be erroneously detected. Therefore, conventionally, a detector or a landing detection plate cannot be provided on a hoistway wall or an apron that is installed in the hoistway, and it is necessary to secure a space for providing a landing device.

  In view of the above, an object of the present invention is to provide an elevator landing device in which erroneous detection does not occur due to foreign matter in the hoistway and to save space.

  In order to achieve the above object, an elevator landing apparatus according to the present invention receives a light and a light emitting unit that emits light and is provided on one of the car and the landing to be moved up and down in the hoistway. A landing detector having a light receiving unit, a polarizing filter provided on the front surface of each of the light emitting unit and the light receiving unit, each transmitting light that vibrates only in different predetermined directions, and the car landing on the landing. The polarized light provided in the light receiving unit is provided on the other side of the car or the landing so as to face the landing detector in a state where the light is transmitted through the polarizing filter provided in the light emitting unit. And a landing detection plate having a reflection portion that polarizes and reflects the light so as to pass through the filter.

1 is an overall view showing a configuration of an elevator according to an embodiment of the present invention. 1 is a detailed view of an elevator landing apparatus according to an embodiment of the present invention. It is detail drawing which shows the landing detector of the elevator which concerns on embodiment of this invention. It is detail drawing which shows the attachment location of the landing detector of the elevator which concerns on embodiment of this invention. It is detail drawing which shows the attachment location of the landing apparatus of the elevator which concerns on embodiment of this invention. It is a mimetic diagram showing the principle of the elevator landing device concerning the embodiment of the present invention. It is detail drawing which shows the other example of attachment of the landing detection board of the elevator which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall view showing a configuration of an elevator according to an embodiment of the present invention. FIG. 2 is a detailed view of the elevator landing apparatus according to the embodiment of the present invention. FIG. 3 is a detailed view showing an elevator landing detector according to the embodiment of the present invention. FIG. 4 is a detailed view showing the installation location of the landing detector according to the embodiment of the present invention. FIG. 5 is a detailed view showing an installation location of the elevator landing apparatus according to the embodiment of the present invention. FIG. 6 is a schematic diagram showing the principle of an elevator landing apparatus according to an embodiment of the present invention. FIG. 7 is a detailed view showing another example of attachment of the elevator landing detection plate according to the embodiment of the present invention.

  First, the whole structure of an elevator is demonstrated using FIG.

  As shown in FIG. 1, a machine room 100 is provided with a hoist 1, an elevator operation control unit 2 (hereinafter referred to as an operation control unit 2), and a deflecting sheave 3. The hoisting machine 1 is provided with a pulse generator 4 for measuring the rotation of a motor (not shown) provided in the hoisting machine 1. The car 5 is suspended from the hoisting machine 1 via a rope 6 and moves up and down in the hoistway 7 by the rotation of the hoisting machine 1. The operation control unit 2 is connected to the hoist 1 and the pulse generator 4 and executes a series of processes related to elevator operation control.

  A counterweight 8 is provided at the other end of the rope 6 that suspends the car 5. A car door 10 that can be freely opened and closed is provided at the entrance of the car 5, and a hall door 101 that engages with the car door 10 when the car 5 is landed and performs a door opening operation in conjunction with the car door 10 is provided. ing.

  A car control device 9 is provided at the upper part of the car 5, and the car door 10 is opened and closed when the car 5 is landed to allow passengers to get on and off. The car control device 9 is connected to the operation control unit 2 by a tail cord 12 and can communicate therewith. In addition to the door opening / closing operation, the car control device 9 is set to control a car illumination, an air conditioner, and an announcement device (not shown). In addition, the hoistway 7 is provided with a landing device, the details of which will be described later. The details of the landing apparatus will be described in the peripheral section 13 of the landing apparatus shown in FIG. The landing device is composed of a landing detector 20 and a landing detection plate 27 described later.

  Although not shown, the landing device and the operation control unit 2 are connected, and when the landing device detects that the car 5 has reached the landing position on the landing 101, the detection result is output to the operation control unit 2. It is set to be. The operation control unit 2 to which the detection result is input determines that the car 5 has reached the landing position at the landing 101 and shifts to a landing operation. After shifting to the landing operation, the car 5 is gradually decelerated, the hoist 1 is braked, and the car 5 is stopped at the landing 101.

  Next, the configuration of the landing apparatus according to the embodiment of the present invention will be described with reference to FIG. The landing detector 20 of the landing device is provided on the car side, and the landing detection plate 27 is provided on the landing side.

  First, the structure of the car side where the landing detector 20 is provided will be described.

  As shown in FIG. 2, the car floor 15 is provided with a U-shaped sill holder 14. The sill receptacle 14 supports a car-side sill 17 fixed to the upper surface, and the car-side sill 17 is provided to guide opening and closing of a door panel (not shown). The sill holder 14 and the car side sill 17 are installed such that the door opening / closing direction is the longitudinal direction.

  An upper portion of a plate-like car apron 18 extending downward is fixed to the side surface of the threshold receiving side 14. The car apron 18 prevents passengers from falling into the hoistway 7, falling of foreign objects, and intrusion when the car 5 stops at a position where the car side sill 17 and a landing side sill 23 described later are not flush with each other. This is a protective plate provided for the purpose. A landing-side apron 24 described later is also provided for the same purpose.

  One surface of the L-shaped reinforcing material 19 is attached to the surface of the car apron 18 that is not on the landing side, and the car apron 18 and the reinforcing material 19 are fixed. By fixing the surface of the reinforcing member 19 not fixed to the car-side apron 18 and the car floor 15 with the fixing member 16, the strength of the car-side apron or the like is maintained.

  A landing detector 20 is attached to the car apron 18. Although details will be described with reference to FIG. 3, although not shown in FIG. 2, the landing detector 20 includes a light emitting unit 21 that emits light and a light receiving unit 22 that receives light.

  Next, the structure on the landing side where the landing detection plate 27 is provided will be described.

  Similarly to the car 5, the hall 101 is also provided with a hallside sill 23, a hallside apron 24, and the like that guide opening and closing of a door panel (not shown). The landing side sill 23 is fixed by two L-shaped brackets so that the upper surface of the landing side sill 23 is flush with the landing 101. Here, one surface of the first L-shaped bracket 25 is fixed to the inner wall of the hoistway 7 of the hall 101, and the other surface and one surface of the second L-shaped bracket 26 are fixed. Then, by fixing the other surface of the second L-shaped bracket 26 and the lower surface of the landing side sill 23, the landing 101 and the landing side sill 23 are fixed. The upper part of the landing apron 24 is fixed to the landing threshold 23 so as to extend downward.

  The landing-side apron 24 is provided with a landing detection plate 27 at a position facing the landing detector 20 attached to the car-side apron 18 when the car 5 is landing on the landing 101. Yes.

  Next, the configuration of the landing detector 20 and the landing detection plate 27 will be described with reference to FIGS. 3, 4, and 5.

  As shown in FIG. 3, polarizing filters 28 a and 28 b are provided on the front surfaces of the light emitting unit 21 and the light receiving unit 22 provided in the landing detector 20. The polarizing filters 28a and 28b transmit only light that vibrates in a certain direction. The front surface of the light emitting unit 21 includes a polarizing filter 28a that transmits light having a horizontal vibration direction, and the front surface of the light receiving unit 22 includes light having a vertical vibration direction, that is, light transmitted through the polarizing filter 28a. Includes a polarizing filter 28b that transmits light having vibration directions different from each other by 90 degrees.

  As shown in FIG. 4, the landing detector 20 is attached to the car apron 18. At this time, it is attached within the opening range of the car door 10 and the landing door 11. As described in the description of FIG. 2, the car apron 18 is fixed to the sill receiver 14 that supports the car sill 17.

  Further, the landing detection plate 27 shown in FIG. 5 has a reflection part 29 that reflects the vibration direction of light oscillating in a fixed direction by polarizing it by 90 degrees. Specifically, a part or all of the surface of the reflecting portion 29 is a triangular pyramid depression formed by superimposing vertices of three plane plates each having a right-angled isosceles triangular reflecting surface and combining them so as to be perpendicular to each other. That is, corner cubes are arranged without gaps. When one surface of the corner cube is irradiated with light, the vibration direction of the incident light is polarized by 90 degrees and reflected. Further, the reflected light is configured to be reflected at a position moved in a direction parallel to the incident axis of the incident light.

  At this time, the landing detection plate 27 is attached to the landing-side apron 24 so as to correspond to the position where the landing detector 20 is attached. That is, similarly to the landing detector 20, the landing detection plate 27 is attached within the opening range of the car door 10 and the landing door 11. As described above, the hall apron 24 is fixed to the hall threshold 23.

  Next, the operation of the elevator landing apparatus according to the embodiment of the present invention will be described.

  First, the flow of the car 5 landing on the landing 101 will be briefly described.

  When the car 5 reaches the landing 101, the light emitted from the light emitting unit 21 provided in the landing detector 20 is reflected on the landing detection plate 27 provided in the hoistway 7. The light is reflected by the unit 29 and received by the light receiving unit 22 provided in the landing detector 20. When the landing detector 20 detects that the light receiving unit 22 has received light, the landing detection signal is output to the operation control unit 2.

The operation control unit 2 that has received the landing detection signal determines that the car 5 has reached the landing position, shifts to a landing operation, and causes the car 5 to land on the landing 101. As the landing operation, the position of the car 5 is measured by the pulse generator 4 or the like, and the car 5 is decelerated or the like.

  Next, the floor detection of the car 5 by the floor landing apparatus at the time of flooring will be specifically described with reference to FIG. In addition, in FIG. 6, it demonstrates using the corner cube 30 of a part of landing detector 20 and the reflection part 29. FIG.

  The light emitted from the light emitting unit 21 provided in the landing detector 20 passes through the polarizing filter 28a and becomes light that vibrates only in one direction. When the light is reflected by the reflection portion 29 provided on the landing detection plate 27 provided in the hoistway 7, the vibration direction of the light is polarized by 90 degrees by the corner cube 30 provided on the surface of the reflection portion 29. Is done.

  Further, when light is applied to one surface of the corner cube 30, it moves in the parallel direction from the optical axis of the incident light and is reflected. The reflected light that has been polarized by 90 degrees and moved in the parallel direction from the incident axis passes through the polarizing filter 28 b and enters the light receiving unit 22 provided in the landing detector 20.

  As described above, the polarizing filter 28a transmits light that vibrates in the horizontal direction and the polarizing filter 28b transmits light that vibrates in the vertical direction, that is, light having vibration directions that differ by 90 degrees.

  Therefore, in the present embodiment, light is first emitted by the light emitting unit 21 as light that vibrates in the horizontal direction. The emitted light is polarized by 90 degrees by the corner cube 30, that is, the reflection unit 29, and reflected as light that vibrates in the vertical direction. The light receiving unit 22 can receive only the light that has been polarized by 90 degrees and reflected.

  By adopting such a configuration, even if the light emitted from the light emitting unit 21 is reflected by the hoistway 7 or the foreign matter existing in the hoistway 7 as in the prior art, the light reflected by the light receiving unit 22 is 90 degrees. Since it is not polarized, it does not pass through the polarizing filter 28b, and the light receiving unit 22 does not receive the reflected light, so that erroneous detection of landing of the car 5 can be prevented.

  That is, conventionally, as described above, when the landing detector 20 is provided on the car side and the landing detection plate 27 is provided on the landing side, the light that the wall of the hoistway 7 and the landing apron 24 are emitted from the light emitting unit 21. Therefore, the landing detector 20 is installed so as to be within the irradiation distance, and the incident light may be reflected on the wall of the hoistway 7 and the apron 24 on the landing side to cause erroneous landing detection. Therefore, a space for installing the landing detection plate 27 is newly secured in the hoistway 7 such as installing the landing detection plate 27 within the emission distance and installing the hoistway 7 wall and the landing apron 24 outside the emission distance. There was a need.

  According to the configuration of the embodiment of the present invention, the car-side apron provided below the car-side sill 17 and the landing-side sill 23 is not affected by reflected light other than the reflecting portion 29 including the corner cube 30. 18. The landing detector 20 and the landing detection plate 27 can be directly or indirectly provided on the landing apron 24. This is because only the light reflected by the reflecting portion 29 can be reliably detected without being affected by the reflection of light by the hoistway 7 wall or the objects installed in the hoistway 7.

  That is, even if the landing detector 20 is installed so that the hoistway 7 wall, the landing apron 24, and the like are within the irradiation distance, the light emitted from the landing detector 20 is reflected on the hoistway 7 wall and the landing side. Reflecting on the apron 24 or the like and receiving the reflected light prevents erroneous detection of landing. Therefore, it is not necessary to newly secure a space as a landing device in the hoistway 7 as in the prior art, and it is not necessary to provide a predetermined distance between the landing detection plate 27 and the hoistway 7 wall. Space saving in the entire building and the hoistway 7 can be achieved.

  Further, since the landing detector 20 can be attached to the car-side apron 18, the landing detector 20 can be attached within the range of the opening of the landing door 11 of the car-side apron 18. Since the car apron 18 can be exposed to the landing only by moving the car 5 to a position slightly higher than the floor of the landing 101 by being attached within the range of the opening of the landing door 11, the landing Thus, maintenance work such as inspection and replacement of the landing detector 20 can be performed. Therefore, during maintenance work, maintenance personnel do not need to enter the pit and can easily perform from the landing 101 side, so that workability and safety are improved. The same effect can be obtained when the landing detection plate 27 is attached to the car apron 18.

  As described above, according to the embodiment of the present invention, the space in the hoistway 7 can be effectively used, and the space of the entire building can be saved.

  In the present embodiment, the landing detector 20 is provided on the car apron 18 and the landing detection plate 27 is provided on the landing apron 24. At this time, as shown in FIG. A part of the side apron 24 may be bent to the side opposite to the car 5, that is, the hoistway 7 side, and the landing detection plate 27 may be installed at the bent portion of the landing side apron 24. Further, although not shown, the car apron 18 may be partially bent in the same manner, and the landing detector 20 may be installed at the bent portion.

  That is, with such a configuration, the landing detector 20 and the landing detection plate 27 are attached to the retracted portions of the car apron 18 and the landing apron 24, respectively, so that the car threshold 17 and the landing threshold 23 are provided. Since foreign matter such as dust and water that has entered from the gap does not come into contact with the light emitting unit 21, the light receiving unit 22, and the reflecting unit 29, the landing detection function of the landing device is not affected.

  In addition, the landing detector 20 is attached to the car-side sill 17, the landing detector 27 is attached to the landing-side sill 23, the landing detector 20 is attached to the landing-side, and the landing detector 27 is attached to the car-side. For example, the landing detector 20 and the landing detection plate 27 can be installed in various places, and space saving in the hoistway 7 can be achieved.

DESCRIPTION OF SYMBOLS 1 ... Hoisting machine 2 ... Elevator operation control part 3 ... Warp sheave 4 ... Pulse generator 5 ... Car 6 ... Rope 7 ... Hoistway 8 ... Counterweight 9 ... Car control device 10 ... Car door 11 ... Landing door 12 ... Tail cord DESCRIPTION OF SYMBOLS 13 ... Flooring apparatus peripheral part 14 ... Sill receptacle 15 ... Car floor 16 ... Fixing member 17 ... Car side threshold 18 ... Car side apron 19 ... Reinforcement material 20 ... Landing detector 21 ... Light emitting part 22 ... Light receiving part 23 ... Platform Side sill 24 ... landing side apron 25 ... first bracket 26 ... second bracket 27 ... landing detection plates 28a, 28b ... polarizing filter 29 ... reflection part 30 ... corner cube 100 ... machine room 101 ... landing

Claims (6)

A landing detector having a light emitting part for emitting light and a light receiving part for receiving light provided on one of a car that moves up and down in the hoistway or a landing provided on each floor;
A polarizing filter provided on the front surface of each of the light emitting unit and the light receiving unit, each of which transmits light of a different predetermined polarization direction;
Light that is provided on the other side of the car or the landing so as to face the landing detector in a state where the car is landing on the landing, and the light transmitted through the polarization filter of the light emitting part is the light receiving part A landing detection plate comprising a reflection part that polarizes and reflects the light so as to pass through the polarizing filter;
An elevator landing apparatus comprising:   One of the landing detector or the landing detection plate is attached to a car sill provided in the car, or a car apron provided in the car sill and extending vertically downward. The elevator landing apparatus according to claim 1.   One of the landing detector or the landing detection plate is attached to a landing threshold provided at the landing, or a landing-side apron provided at the landing threshold and extending vertically downward. The elevator landing apparatus according to claim 1.   One of the landing detector or the landing detection plate faces a portion where a part of the car apron is recessed in a direction not projecting to the facing landing side or a part of the landing apron. The elevator landing apparatus according to claim 1, wherein the elevator landing apparatus is attached to a portion recessed in a direction that does not protrude toward the car.   The elevator landing device according to claim 2, wherein one of the landing detector or the landing detection plate is attached within an opening range of a landing door provided on the landing floor.   Part or all of the surface of the reflecting part is covered with triangular pyramid-shaped depressions formed by superimposing the tops of three right-angled isosceles flat plates and combining the flat plates at right angles to each other. The elevator landing apparatus according to claim 1, wherein the elevator landing apparatus is formed.

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