JP7142614B2 - Position detector and elevator - Google Patents

Description

The present invention relates to a position detector for detecting the position of a car and an elevator using the position detector.

2. Description of the Related Art Conventionally, an elevator is known in which a position detector detects the position of a car in a hoistway and controls the landing position of the car based on the detected position.

As a position detector for detecting the position of the car, there is known a combination of a plate attached to the wall surface of the hoistway and a positive detector provided on the ceiling of the car (see, for example, Patent Document 1).

JP 2018-80039 A

However, if the position detector is installed near a long rope (such as a governor rope) that moves in conjunction with the elevation of the car, the rope will get caught in the position detector, causing erroneous detection of the position of the car. may occur. For this reason, it is difficult to install the position detector near the rope in the hoistway, and the installation location of the position detector is restricted.

SUMMARY OF THE INVENTION An object of the present invention is to install a position detector near a long object such as a governor rope.

In order to solve the above problems and to solve the problems of the present invention, a position detector of the present invention detects the position of a car in an elevator hoistway by combining a shielding member and a detection sensor. , the detection sensor includes a rectangular sensor unit having a sensor in a concave portion, and a protective member having a flat plate portion covering a surface portion of the sensor unit and arranged to face the surface portion of the sensor unit. .

Further, the elevator of the present invention includes a hoistway, a car that moves in the hoistway, a position detector that detects the position of the car in the hoistway, which is a combination of a shielding member and a detection sensor, and a car. an endless governor rope for emergency stopping of the Furthermore, the detection sensor includes a rectangular sensor unit having a sensor in the recess, and a protective member having a flat plate portion covering the surface of the sensor unit and arranged to face the surface of the sensor unit, A shield member and a detection sensor are arranged to be positioned between the governor ropes.

According to the present invention, the position detector can be installed near a long object such as a governor rope.

1 is an overall configuration diagram of an elevator according to an embodiment of the present invention; FIG. It is a block diagram which shows the hardware example of the elevator control apparatus used with the elevator which concerns on the example of embodiment of this invention. It is the top view which looked at the elevator which concerns on the example of embodiment of this invention from upper direction. FIG. 4 is a perspective view of a positive detector of the position detector according to the embodiment of the present invention; FIG. 4 is a perspective view showing a shielding member of the position detector according to the embodiment of the present invention; FIG. 4 is a front view of the positive detector fixed to the wall surface of the hoistway according to the embodiment of the present invention; FIG. 4 is a top plan view showing the positional relationship between the positive detector fixed to the wall surface of the hoistway and the governor rope according to the embodiment of the present invention.

An embodiment of the present invention (hereinafter referred to as "this example") will now be described with reference to the accompanying drawings. In the present specification and drawings, constituent elements having substantially the same function or configuration are denoted by the same reference numerals, and overlapping descriptions are omitted.

FIG. 1 shows an example of the overall configuration of the elevator of this example.
A car 1 of an elevator 100 is connected to one end of a main rope 9 and driven by an electric motor 22 around which the main rope 9 is wound to move up and down in a hoistway 11 . A counterweight 10 is connected to the other end of the main rope 9 . The elevator control device 20 controls raising and lowering of the car 1 by rotation of the electric motor 22 .

A governor rope 7, which is an endless long object, is connected to the car 1 of the elevator. The governor rope 7 is wound around the governor 3 arranged at the upper end side of the hoistway 11 and also wound around the governor weight pulley 5 arranged at the lower end side of the hoistway 11, interlocking with the elevation of the car 1. to move. The governor weight pulley 5 applies tension to the governor rope 7, and the governor weight pulley 5 is provided with a damping mechanism 6. As shown in FIG.

A shielding member 70 as an object to be detected is mounted on the ceiling portion 1a of the car 1, and a positive detector 80 as a detection sensor is arranged at each floor stop position 12 of the car 1 on the hoistway 11. The position detector 90 of this example is configured by combining the shielding member 70 and the positive detector 80 .

The elevator control device 20 performs floor alignment processing for opening and closing the door of the car 1 at each stop floor 12 based on the state in which the shielding member 70 is detected by the positive detector 80 . The elevator control device 20 includes a floor alignment command section 24 for performing floor alignment processing. In addition, in FIG. 1, the configuration used for other than the floor alignment process of the elevator control device 20 is omitted.

When the positive detector 80 of the position detector 90 detects the shielding member 70 and detects that the car 1 matches the landing height of the stop floor 12, the floor alignment command unit 24 instructs the car 1 to Generates an open/close command to open/close the door. Then, the elevator control device 20 opens and closes the door of the car 1 based on the open/close command.

FIG. 2 shows a hardware configuration example of the elevator control device 20. As shown in FIG. The elevator control device 20 is configured by a computer device C, for example.
The computer device C includes a CPU (Central Processing Unit) C1, a ROM (Read Only Memory) C2, and a RAM (Random Access Memory) C3, which are respectively connected to a bus C4. Further, the computer device C includes a display section C5, an operation section C6, a non-volatile storage C7, and a network interface C8.

The CPU C1 reads from the ROM C2 a program code of software that implements each function provided in the elevator control device 20 of this example and executes it. Variables, parameters, etc. generated during the arithmetic processing are temporarily written in the RAM C3. For example, in the elevator control device 20, the CPU C1 reads out a program stored in the ROM C2 to control the floor matching process.

As the non-volatile storage C7, for example, HDD (Hard disk drive), SSD (Solid State Drive), flexible disk, optical disk, magneto-optical disk, CD-ROM, CD-R, magnetic tape, non-volatile memory, etc. are used. be done. The nonvolatile storage C7 stores an OS (Operating System), various parameters, and a program for causing the computer device C to function as an elevator control device.

For the network interface C8, for example, a NIC (Network Interface Card) or the like is used, and various data can be transmitted and received via a LAN (Local Area Network) to which terminals are connected, a dedicated line, or the like. For example, operation information of the buttons in the car 1 and the buttons of each floor are acquired via the network interface C8. Also, it is possible to communicate with an external device via the network interface C8. For example, a computer device C that constitutes the elevator control device 20 communicates with a monitoring center that manages the elevator 100 .

The display section C5 and the operation section C6 are used during elevator maintenance work. For example, the display unit C5 displays the operating state of the elevator and the like, and the operation unit C6 performs input operations such as the operation mode. Depending on the configuration of the elevator control device 20, the display section C5 and the operation section C6 may not be provided.

FIG. 3 is a plan view when the elevator 100 of this example is viewed from above.
As shown in FIG. 3 , a positector 80 is fixed to the wall surface 11 a of the hoistway 11 so as to be positioned between the two governor ropes 7 . In addition, the positector 80 may be attached to the guide rail of the car 1 . A shield member 70 is fixed to the end of the ceiling surface 1 a of the car 1 on the governor rope 7 side so as to face the positive detector 80 . The shielding member 70 is attached to the frame or handrail on the top of the car 1 .
In this example, since the shield member 70 and the positive detector 80 are arranged between the governor ropes 7, the conventional dead space between the governor ropes 7 can be effectively utilized. Thereby, for example, even if it becomes necessary to add the position detector 90 to an existing elevator, it can be easily additionally installed.

4 is a perspective view of the positive detector 80 attached to the wall surface 11a of the hoistway 11. FIG.
As shown in FIG. 4, the positive detector 80 of this example includes sensor units 80A and 80B, and a pair of protective members 13A and 13B arranged so as to vertically sandwich the sensor units 80A and 80B. .

The sensor units 80A and 80B are configured by rectangular housings in which a concave portion 81 for inserting the shielding plate of the shielding member 70 is formed in the center. A sensor unit 800 including a light emitting sensor and a light receiving sensor is provided in the concave portion 81 . The sensor units 80A and 80B are connected with the outer surfaces of the side portions 82 aligned and the openings of the recesses 81 directed in the same direction.

Part of the upper surface 82a, which is the surface portion of each of the sensor units 80A and 80B, is provided with a biting amount confirmation mark 83 formed by recessing the surface.
The biting amount confirmation mark 83 is used by an operator to confirm the penetration depth of the shielding plate of the shielding member 70 in the concave portion 81 when inspecting the elevator or the like.

A protection member 13A is provided above the connected sensor units 80A and 80B at a predetermined distance from the upper surface 82a. 13 A of protection members are comprised by processing board materials, such as a metal. The protection member 13A includes a guard portion 13a as a flat plate portion having a flat surface facing the upper surfaces 82a of the sensor units 80A and 80B, and a fixing portion 13b formed by bending one end of the flat surface at right angles. A protection member 13B having the same structure as the protection member 13A is provided below the sensor units 80A and 80B at a predetermined distance from the lower surfaces of the sensor units 80A and 80B.

By arranging the protection members 13A and 13B in a state separated from the sensor units 80A and 80B, the impact received by the protection members 13A and 13B from the governor rope 7 is prevented from being transmitted directly to the sensor units 80A and 80B. can be mitigated.

A cutout portion 16 is formed in the guard portion 13a so as to face the space portion of the recessed portion 81 of the sensor units 80A and 80B. The notched portion 16 is provided with a tapered portion 17 formed so as to be connected to the tip side of the rectangle. Further, a mark visual recognition hole 18 is formed at a position facing the biting amount confirmation mark 83 of the guard portion 13a.

The fixing portion 13b is formed with mounting holes 14 at predetermined intervals through which screws are used to fix the protective member 13 to the hoistway wall surface 11a.

In this example, a pair of protective members 13A and 13B are provided so as to vertically sandwich the sensor units 80A and 80B, but the protective member 13A may be provided only above the sensor units. Similarly, the protective member 13B may be provided only below the sensor unit.

In addition, in this example, the protection members 13A and 13B are placed away from the surface portions of the sensor units 80A and 80B, but the protection members 13A and 13B are placed in contact with the surface portions of the sensor units 80A and 80B. good too.

FIG. 5 is a perspective view of the shielding member 70 installed on the ceiling portion 1a of the car 1. FIG.
The shielding plate 70 is fixed to the ceiling portion 1a of the car 1 by, for example, attaching it to a pedestal installed on the ceiling portion 1a of the car 1 using a bracket.

As shown in FIG. 5, the shielding member 70 is composed of a rectangular mounting member 71 having a flat portion 71a and two rectangular shielding plates 70a and 70b provided perpendicularly to the flat portion 71a. It is The shielding plates 70a and 70b are arranged to face each other with a predetermined distance therebetween.

The shielding plates 70a and 70b of the shielding member 70 are to be inserted into the recesses 81 of the sensor units 80A and 80B, respectively. The shielding plate 70a is inserted into the recessed portion 81 of the sensor unit 80A and bites into it, thereby blocking the light beam from the light emitting sensor of the sensor section 800 to the light receiving sensor. Similarly, the shielding plate 70b bites into the recessed portion 81 of the sensor unit 80B to block the light beam from the light emitting sensor of the sensor section 800 to the light receiving sensor. The shielding member 70 is made of a material such as plastic that can block light beams from the light-emitting sensor of each sensor unit to the light-receiving sensor.

In the position detector 90 of this example, when there is no shielding plate between the light emitting sensor and the light receiving sensor, the sensor portion 800 of the sensor unit is in a state of detecting light, and the light is detected between the light emitting sensor and the light receiving sensor. When there is a shielding plate in the sensor unit, the sensor section 800 of the sensor unit does not detect light.

The elevator control device 20 acquires information on the light receiving state of a positector 80 (position detector) installed at a predetermined position in the hoistway 11, and performs floor alignment processing for the car 1 based on the acquired information. do.

FIG. 6 is a front view of the positector 80 fixed to the hoistway wall surface 11a.
As shown in FIG. 6 , the positector 80 of this example is fixed to the hoistway wall surface 11 a so as to be positioned between two ropes that are part of the endless governor rope 7 .
The sensor units 80A and 80B are fixed to the hoistway wall surface 11a on the rear side by screws 85 inserted into the recesses 81. As shown in FIG. The fixing portions 13b of the protective members 13A and 13B are fixed to the hoistway wall surface 11a by screws 15 inserted into the mounting holes 14. As shown in FIG.

FIG. 7 is a plan view showing the positional relationship between the positector 80 fixed to the hoistway wall surface 11a and the governor rope 7 as viewed from above.

As shown in FIG. 7, the positector 80 of this example is arranged in a state in which the openings of the recesses 81 of the sensor units 80A and 80B are opposed to the imaginary straight line L connecting the two governor ropes 7 indicated by the dashed line. It is fixed to the hoistway wall surface 11a. The protective member 13 is fixed in such a manner that the tip of the guard portion 13a does not exceed the imaginary straight line L. As shown in FIG.

A sensor unit 800 in which a light emitting sensor 801 and a light receiving sensor 802 are arranged so as to face each other across the space of the recess 81 is provided inside the side portions 82 of the sensor units 80A and 80B. 80a and 80b in the drawing indicate the directions of the light beams emitted from the light emission sensor 801. FIG. In this example, the positector 80 detects that the light beam is blocked by the shielding plates 70a and 70b of the shielding member 70 inserted into the concave portion 81, so that the elevator control device 20 controls the car 1 in the hoistway 11. Detect the position of

The protection member 13A of the present embodiment has a leading end projecting portion 19 formed such that the leading end portion of the guard portion 13a projects forward by a length S1 toward the imaginary straight line L from the leading end portions of the sensor units 80A and 80B. have. In addition, in the protection member 13A of the present embodiment, the widthwise portion of the guard portion 13a facing the side portion 82 of the sensor unit protrudes laterally by S2 beyond the width of the upper surface 82a of the side portion 82 of the sensor units 80A and 80B. It has a lateral protrusion 21 formed to.

By providing the tip projecting portion 19 and the side projecting portion 21 on the protective member 13A, the surface portions of the sensor units 80A and 80B can be completely covered with the protective member 13A when the positive detector 80 is viewed from above. As a result, even if the swaying governor rope 7 reaches the fixed position of the positector 80 due to vibrations caused by the building swaying due to wind or the like, the governor rope 7 is held down by the protruding portion 19 at the end, and the swaying of the governor rope 7 is prevented. Amplitude amplification can be suppressed. In addition, even if the governor rope 7 swings with a large amplitude and enters the recessed portion 81 of the sensor unit, the side protruding portion 21 holds down the governor rope 7 so that the governor rope 7 can move to the sensor portions 800 of the sensor units 80A and 80B. can be prevented from being damaged.

The tapered portion 17 formed on the tip protruding portion 19 is provided with an inclination that widens toward the tip, and the opening of the notched portion 16 is formed to widen toward the imaginary straight line L side. By providing such a tapered portion 17, even when the governor rope 7 swinging while rotating due to vibration or the like comes around to the position of the concave portion 81 of the positive detector 80, the governor rope is brought into contact with the inclination of the tapered portion 17 and You can stop the movement of 7. As a result, amplification of the amplitude of the swing of the governor rope 7 can be suppressed. Further, by moving forward along the slope of the tapered portion 17 , the governor rope 7 can be returned to its original position without being caught in the concave portion 81 .

Further, in this example, since the tip of the guard portion 13a of the protective member 13 is fixed to the hoistway wall surface 11a in a state not exceeding the imaginary straight line L, even if the governor rope 7 reaches the position of the recessed portion 81 due to vibration or the like, can also be made less likely to get caught on the tip of the guard portion 13a.

Further, as shown in FIG. 7, in the positive detector 80 of this example, the biting amount confirmation marks 83 provided on the sensor units 80A and 80B can be visually recognized from above through the mark confirmation holes 18. FIG. As a result, the worker can easily check the depth of penetration of the shielding plate into the concave portion 81 at the time of repair or the like, and the working efficiency can be improved.

Although the position detector 90 and the elevator 100 using the position detector 90 according to this example have been described above, the present invention is not limited to the above-described embodiments, and is within the scope of the invention described in the claims. Various modifications are possible within.

For example, the number of shielding plates of the shielding member 70 is not limited to two as in this example, and may be one or three or more. In this case, the number of sensor units of the positive detector 80 is appropriately changed according to the number of shielding plates. Moreover, a notch may be provided in the shielding plate so that the light beam from the light emitting sensor to the light receiving sensor can pass through.

Also, in this example, the shielding member 70 and the positector 80 are arranged between the governor ropes 7 , but the shielding member 70 and the positector 80 may be arranged between the main ropes 9 .

Reference Signs List 1 Car 1a Ceiling 3 Governor 4 Pulse generator 5 Governor weight pulley 6 Damping mechanism 7 Governor rope 9 Main rope 10 ... Balancing weight 11 ... Hoistway 11a ... Hoistway wall surface 12 ... Stop floors 13A, 13B ... Protective member 13a ... Guard section (flat plate section)
13b... Fixing part 14... Mounting hole 15... Screw 16... Cut part 17... Tapered part 18... Mark visual recognition hole 19... Tip projection part 20... Elevator control Device 21 side projecting portion 22 electric motor 23 pulse generator 24 floor alignment command unit 70 shielding members 70a, 70b shielding plate 80 positive detector 80A, 80B...Sensor unit 81...Recess 82...Side part 82a...Surface part 83...Bite amount confirmation mark 85...Screw 90...Position detector 100...Elevator 800 ... Sensor part 801 ... Light emitting sensor 802 ... Light receiving sensor L ... Virtual straight lines S1, S2 ... Projection width

Claims (6)

A position detector for detecting the position of a car in an elevator hoistway, comprising a combination of a shielding member and a detection sensor,
The detection sensor is
A rectangular sensor unit with a sensor in the recess,
a protective member having a flat plate portion covering the surface portion of the sensor unit and arranged to face the surface portion of the sensor unit ;
A plurality of the protective members are provided with the sensor unit sandwiched therebetween,
The flat plate portion has a tip protruding portion that protrudes forward from the tip of the sensor unit,
A tapered portion having a slope that widens toward the tip is formed on the tip protrusion.
Position detector. a hoistway;
a car that moves in the hoistway;
a position detector that detects the position of the car in the hoistway, combining a shielding member and a detection sensor;
and an endless governor rope for emergency stopping of the car,
The detection sensor includes a rectangular sensor unit having a sensor in a concave portion, and a protective member having a flat plate portion covering a surface portion of the sensor unit and arranged to face the surface portion of the sensor unit. ,
The elevator, wherein the shield member and the detection sensor are positioned between the governor ropes. The elevator according to claim 2, wherein a plurality of the protection members are provided with the sensor unit interposed therebetween. The elevator according to claim 2 or 3, wherein the flat plate portion has a tip protruding portion that protrudes forward from the tip of the sensor unit. 5. The elevator according to claim 4, wherein the tip projecting portion is formed with a taper portion having a slope that widens toward the tip. The elevator according to any one of claims 2 to 5, wherein the flat plate portion has a side projecting portion that projects laterally beyond the surface portion of the sensor unit.

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