JP6626695B2 - Elevator - Google Patents

Description

  The present invention relates to an elevator having a function of wirelessly supplying power to a car.

  In a general elevator, power is supplied to equipment in the car by a power supply line called a tail cord suspended from the car. On the other hand, an elevator without the tail cord has been proposed.

  In an elevator without a power supply line suspended from a car, as a method of supplying power to equipment in the car, for example, as shown in Patent Document 1, power is supplied using non-contact power supply during stoppage, and the power storage device mounted on the car is A method of charging and supplying power from a power storage device during traveling is shown.

  In addition, there is a position detector for detecting the position of the car for controlling the elevator, and FIG. 13 of Patent Document 1 shows an example in which the position detector and the power receiving unit are arranged adjacent to each other at the top of the car. ing.

  Further, in Patent Document 2, a power transmission unit for performing non-contact power supply is provided on each floor, and the power transmission unit or the power reception unit detects an induced voltage or a magnetic flux to detect whether the car is at the door opening / closing position. A configuration that can also be used is described. With this configuration, it is not necessary to separately provide a position detector.

  Although it is not related to non-contact power supply, as a technique related to position detection, in Patent Document 3, light is used for position detection, and the shape of a shielding plate (detected object) that shields light used as a detected object is devised. The technique describes a technique for detecting a position with high accuracy.

WO2002-098779 JP 2006-193275 A JP 2010-6562 A

  However, since various devices are arranged in the elevator car and the hoistway, there is no room for arranging the devices, and the position detector and the power receiving unit are arranged at the upper part of the car adjacent to each other as in Patent Document 1. You may not be able to.

  Here, in Patent Literature 2, a position detector is not separately provided, and a position is detected by detecting an induced voltage or a magnetic flux by a power transmitting unit or a power receiving unit performing non-contact power supply. However, this method has a problem that it is not possible to detect a position with high accuracy.

  Therefore, in order to detect a position with high accuracy, a position detector using a light-shielding plate that shields light as an object to be detected, such as Patent Document 1 or Patent Document 3, is required. Become.

  Therefore, an object of the present invention is to provide a car in a case where power is supplied to the car in a non-contact manner and a position detector using a shielding plate that shields light as a detection target using light for position detection is provided on the car. It is an object of the present invention to provide an elevator in which a power receiving unit and a position detector can be arranged without being adjacent to each other.

  In order to solve the above-mentioned problem, in the present invention, for example, in the case of ascending and descending in a hoistway, a power transmission unit provided in the hoistway, and power is supplied in a non-contact manner from the power transmission unit provided in the car. Power receiving unit, a shield plate provided in the hoistway, and a position detector that detects a position by irradiating light provided in the car and detecting a pattern of the light shielded by the shield plate. The power receiving unit has a concave portion through which the power transmitting unit passes, the position detector has a concave portion through which the shielding plate passes, and the concave portion of the power receiving unit includes the shield. The plate has a size that can pass through the inside of the concave portion of the power receiving unit, and the power receiving unit is arranged at a position where the shielding plate passes through the inside of the concave portion of the power receiving unit.

  With the configuration as described above, the power is supplied to the car in a non-contact manner, and when a position detector using a shielding plate that shields light as a detection target using light for position detection is used, The provided power receiving unit and the position detector can be arranged without being adjacent to each other.

FIG. 2 is a schematic diagram illustrating a first embodiment. FIG. 2 is a vertical sectional view showing the entire elevator according to the first embodiment. FIG. 2 is a schematic structural diagram of a car in the first embodiment. FIG. 2 is a perspective view illustrating a positional relationship between the position detection device and the power supply device according to the first embodiment. FIG. 4 is a diagram for explaining an example of position detection according to the first embodiment. FIG. 2 is a horizontal sectional view of the position detection device and the power supply device according to the first embodiment. FIG. 2 illustrates an example of a power supply device according to the first embodiment.

  Embodiments of the present invention will be described with reference to the drawings. In each drawing and each embodiment, the same or similar components are denoted by the same reference numerals, and description thereof will be omitted.

  1 to 3 show an elevator according to a first embodiment. FIG. 1 is a schematic diagram for explaining the first embodiment. FIG. 1A is a front view of a car, FIG. 1B is a view taken along the line AA ′, and FIG. It is an arrow B 'view. FIG. 2 is a longitudinal sectional view illustrating the entire elevator according to the first embodiment. FIG. 3 is a schematic structural diagram of the car in the first embodiment.

  As shown in FIGS. 1 to 3, the elevator according to the first embodiment includes, for example, a car (ride car) 1 that moves up and down in the hoistway 100, a power transmission unit 8 provided in the hoistway 100, and a car 1. A power receiving unit 7 provided and supplied with power from a power transmitting unit 8 in a non-contact manner, a shielding plate 6 (61, 62,..., 6n) provided in the hoistway 100, and a light provided on the car 1 for irradiating light. A position detector for detecting a position by detecting a pattern of light shielded by the shield plate;

  The elevator car 1 includes a door 2, a car control device 21, and car devices 3 such as an air conditioner for controlling the temperature in the car 1 and a pressure control device for controlling the air pressure in the car 1. . Further, the car 1 may have a guide roller 4 so as to be able to smoothly move up and down along a guide rail (not shown). Here, an example is shown in which three-axis rollers 41, 42, and 43 used for an ultra-high-speed elevator are configured. The detailed shape of the guide roller 4 is abbreviated.

  As shown in FIG. 2, the car 1 is suspended from the hoisting machine 11 by a rope 12, and the counterweight 13 shown in FIG. I am planning. In FIG. 2, illustration of the counterweight is omitted.

  In the hoistway 100, a shielding plate 6 (61, 62,..., 6n) is installed on each floor (here, 1, 2,..., N floors) as a detection object for detecting a position. The position detector 5 installed in the car 1 detects the position by these shield plates 6.

  Further, as shown in FIG. 1B, in the car 1 and the hoistway 100, at the position of the area 51 in the vicinity of the car 1, there are provided safety switches for suppressing overshoot from the terminal floor. A governor rope for detecting the overspeed of the car is disposed at the position of the area 52, and wiring between the upper and lower cars is mounted at the position of the area 53. Therefore, there is no space for disposing the power receiving unit 7 in the upper part of the car.

  Therefore, as shown in FIG. 1C, when viewed from above, the position is substantially the same as the position detector 5 above the car, that is, the distance from the car center line L1 to the center line L2 of the position detector 5, The distance from the car center line L1 to the center line L3 of the power receiving unit 7 at the lower part of the car is both set to Lc. Power is supplied to the car device 3 from the control device 10 to the power receiving unit 7 in a non-contact manner via the power supply line 83, the power transmission circuit 82, and the power transmission unit 8. Further, the power storage device 92 (for example, a charge / discharge circuit and a storage battery) is charged from the power receiving unit 7 via a power receiving circuit (for example, a rectifier circuit) 91 installed below the car. When the car 1 is traveling, power is supplied from the power storage device 92 to the car equipment 3 (including the car control device 21).

  FIG. 4 is a perspective view illustrating a positional relationship between the position detection device and the power supply device according to the first embodiment. FIG. 4 shows a position detector 5 and a shielding plate 6 as a position detecting device, a power receiving unit 7 and a power transmitting unit 8 as a power supply device, and further shows a positional relationship between them.

  As shown in FIG. 4, the power receiving unit 7 has a concave portion through which the power transmitting unit 8 passes, the position detector 5 has a concave portion through which the shielding plate 6 passes, and the concave portion of the power receiving unit 7 The plate 6 has a size that allows the plate 6 to pass through the inside of the recess of the power receiving unit 7, and the power receiving unit 7 is arranged at a position where the shielding plate 6 passes through the inside of the recess of the power receiving unit 7. Thus, even when the space is limited, the power receiving unit 7 provided in the car 1 and the position detector 5 can be arranged without being adjacent to each other. For example, as shown by a dotted line in the figure, a projected portion 600 of the shielding plate 6 on the horizontal section is included in a projected portion 800 of the power transmitting unit 8 on the horizontal section shown by the broken line. As a result, a gap is ensured in which there is no danger of the car power receiving unit 7 colliding with the shielding plate on each floor while the elevator is running. Although FIG. 4 shows a case where the projection part 600 is completely included in the projection part 800, the present invention is not limited to this, and a case where at least a part is not included may be used.

  In addition, since the power receiving unit 7 and the power transmitting unit 8 have the highest coupling when their centers coincide with each other, the power transmission efficiency of non-contact power feeding is good. Therefore, in order to easily adjust the position where the power transmission unit 8 is installed when the elevator is installed, a mark is provided so that the center lines 70 and 80 can be visually observed.

  FIG. 5 is a diagram illustrating an example of position detection according to the first embodiment, and is a schematic diagram of a signal detected by the position detector 5.

  The planar shape of the shielding plate 6 is different from the planar shape of the power transmitting unit 8. The position detector 5 is different from the case where the power transmitting unit 8 passes through the inside of the concave portion of the position detector 5. The position can be detected by the shielding plate 6 in distinction from the case of passing through the inside of the concave portion.

  Further, the position detector 5 irradiates a plurality of light beams, and the shielding plate 6 has a plurality of zones having different patterns for shielding the plurality of light beams in one shielding plate 6. Can detect which of the plurality of zones is based on the pattern in which the plurality of lights are shielded.

  In FIG. 5, the position detector 5 emits three lights and receives light using three optical sensors, and how the three lights are shielded by the shielding plate 6 before reaching the respective optical sensors. The position can be determined by detecting the pattern. For example, when the car 1 is away from the stop position, all three lights can be detected because the car 1 is not shielded. In zone 1, the leftmost sensor is blocked, in zone 2, all three are blocked, and in zone 3, both sides are blocked. Since a plurality of patterns can be identified in this way, fine position detection is possible. Furthermore, for example, there is a pattern in which all three lights are shielded in zone 2, but since the light always passes through zones 1 and 3 before that, all three lights are not suddenly shielded as in zone 2. Like that. Therefore, it is possible to distinguish whether the power transmitting unit 8 or the shielding plate 6 passes through the inside of the concave portion of the position detector 5.

  FIG. 6 is a horizontal cross-sectional view of the position detection device and the power supply device according to the first embodiment. FIG. 6A is a horizontal cross section of a car position detecting portion (position detector 5, shielding plate 6, shielding plate support 60), and FIG. 6B is a power feeding portion (power receiving unit 7, power transmitting unit 8, supporting power transmitting unit). The horizontal cross section of the body 81) is schematically shown. Assuming that a gap required to prevent contact during traveling is dm, a gap larger than that is secured. As shown in FIG. 4, the power transmission unit 8 is thicker than the shield plate 6, and therefore, is installed such that, for example, dm = dc1 = dc2 at the time of installation. At this time, a gap larger than dm is secured for dp1 and dp2.

  FIG. 7 is a diagram illustrating an example of the power supply device according to the first embodiment. FIG. 7A is a top view, and FIG. 7B is a side view of one side seen from inside the concave portion. The power receiving section 7 includes a power receiving coil section 71 and a magnetic body section 72. Here, the power receiving coil unit 71 can have the same shape as the power transmitting coil unit.

  Then, as shown in FIG. 2, when power is supplied at the lowest floor, when the elevator is installed, first, the car 1 is installed so that the height of the car 1 matches the landing at the lowest floor (first floor). Adjust the position to be used. Further, at that time, the position at which the power transmission unit 8 is installed is adjusted such that the center line 80 of the power transmission unit 8 coincides with the center line 70 of the power reception unit 7 so that the power supply efficiency of the power supply device becomes the best. By doing so, the time for adjusting the position of the power transmission unit 8 during installation can be reduced. As shown in FIG. 6, the shielding plate 6 is fixed to the hoistway 100 or the guide rail by the shielding plate support 60, and the power transmission unit 8 is fixed to the hoistway 100 or the guide rail by the power transmitting unit support 81. ing.

  Next, as Embodiment 2, a variation of the positional relationship with the power transmission unit 8 in Embodiment 1 will be described.

  For example, when power is supplied only at the lowest floor, the position detector 5 is arranged at the upper part of the car 1, the power receiving unit 7 is arranged at the lower part of the car 1, and the power transmitting unit 8 stops the car 1 at the lowest floor. In such a case, it can be arranged at a position where power can be supplied. In this case, it is possible to prevent the power transmission unit 8 from passing through the concave portion of the position detector 5 if there is no power transmission unit 8 other than the lowest floor. However, the recess of the position detector 5 has a size that allows the power transmission unit 8 to pass through the inside of the recess of the position detector 5 in case the car 1 moves further below the lowest floor. You may do so.

  Further, for example, when power is supplied only to the top floor, the position detector 5 is disposed below the car 1, the power receiving unit 7 is disposed above the car 1, and the power transmission unit 8 is such that the car 1 is stopped at the top floor. In this case, it can be arranged at a position where power can be supplied. In this case, it is possible to prevent the power transmission unit 8 from passing through the concave portion of the position detector 5 if there is no power transmission unit 8 other than the top floor. However, the recess of the position detector 5 has a size that allows the power transmission unit 8 to pass through the inside of the recess of the position detector 5 in case the car 1 moves further up than the top floor. It may be.

  In addition, the concave portion of the position detector 5 has a size such that the power transmission unit 8 can pass through the inside of the concave portion of the position detector 5. It may be arranged at a position passing through the inside. In this case, the power transmission unit 8 can be arranged at a plurality of locations in the hoistway 100. In this case, it is desirable to take measures to prevent erroneous detection of the power transmission unit 8 and the shielding plate 6 as described with reference to FIG.

  The embodiments of the present invention have been described above. However, the configurations described in the above embodiments are merely examples, and the present invention can be appropriately changed without departing from the technical idea. The configurations described in the respective embodiments may be used in combination as long as they do not conflict with each other.

1: car 2: door 21: car controller 3: car equipment 4: guide roller 5: position detectors 51, 52, 53: areas 6, 61, 62, 6n: shielding plate 60: shielding plate support 7: power receiving Unit 71: Power receiving coil unit 72: Magnetic body unit 8: Power transmitting unit 81: Power transmitting unit support 82: Power transmitting circuit 83: Power supply line 91: Power receiving circuit 92: Power storage device 10: Control device 11: Hoisting machine 12: Rope 13 : Balance weight 100: hoistway

Claims (6)

When the elevator is moved up and down in the hoistway, a power transmitting unit provided in the hoistway, a power receiving unit provided in the car and supplied with power from the power transmitting unit in a non-contact manner, and a shielding plate provided in the hoistway An elevator provided with a position detector that detects a pattern by irradiating light provided on the car and detecting the pattern of the light shielded by the shielding plate,
The power receiving unit has a recess through which the power transmitting unit passes,
The position detector has a recess through which the shielding plate passes,
The recess of the power receiving unit has a size such that the shielding plate can pass through the inside of the recess of the power receiving unit,
The power receiving unit is disposed at a position where the shielding plate passes through the inside of the concave portion of the power receiving unit ,
The position detector is disposed at an upper part of the car or a lower part of the car,
When the position detector is arranged at the top of the car, the power receiving unit is arranged at the bottom of the car, and the power transmission unit is a position where power can be supplied when the car is stopped at the lowest floor. Placed in
When the position detector is arranged at the bottom of the car, the power receiving unit is arranged at the top of the car, and the power transmission unit is at a position where power can be supplied when the car is stopped at the top floor. An elevator, which is arranged . In claim 1 ,
The concave portion of the position detector has a size such that the power transmission unit can pass through the inside of the concave portion of the position detector,
The elevator, wherein the position detector is disposed at a position where the power transmission unit passes through the inside of the concave portion of the position detector. In claim 2 ,
The elevator, wherein the power transmission unit is arranged at a plurality of locations in the hoistway. In claim 2 ,
The planar shape of the shielding plate is different from the planar shape of the power transmission unit,
The position detector distinguishes between the case where the power transmission unit passes through the inside of the recess of the position detector and the case where the shield plate passes inside the recess of the position detector, and detects the position by the shield plate. An elevator characterized in that it is possible. In claim 2 ,
The position detector emits a plurality of lights,
The shielding plate has a plurality of zones having different patterns for shielding the plurality of lights in one shielding plate,
The elevator according to claim 1, wherein the position detector is capable of detecting which of the plurality of zones is the zone based on the pattern in which the plurality of lights are shielded. In claim 1 ,
The elevator, wherein the power transmitting unit and the power receiving unit have a mark for adjusting an installation position.

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