JP2017071500A - Inspection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inspection system for a vibration damping device installed in an elevator device, which can shorten inspection time without requiring proficiency of an inspection worker.SOLUTION: An inspection system for checking operations of vibration damping devices 56, 58 mounted to an upper portion of a car 12 includes: a vibration damping device control unit 138; an inspection switch unit 120 installed at a position different from those of the vibration damping devices 56, 58 and operated manually; and a main control device 54. The main control device 54 detects an operating state of the inspection switch unit 120, and issues an operation instruction to the vibration damping device control unit 138 when determining that the inspection switch unit 120 has issued an operation instruction of the vibration damping devices 56, 58 on the basis of the detected operating state. When the operation instruction is issued by the main control device 54, the vibration damping device control unit 138 causes the vibration damping devices 56, 58 to hold a guide rail.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an inspection system for a vibration damping device, and more particularly to an inspection system for confirming the operation of a vibration damping device provided at an upper part of an elevator car.

  In recent years, as the number of buildings rises, in rope-type elevators, the swing of the main rope due to the shaking of the building due to earthquakes and strong winds has become a problem, and a damping device for quickly converging this swing is in the car. It is provided at the top.

  For example, if a building shakes due to long-period ground motion, it is hung on a hoisting sheave installed in a machine room above the top of the hoistway, and the main rope hanging the car swings horizontally The horizontal main rope swing is referred to as “lateral vibration”). In this case, the car is pulled (pulled up) by the main rope that vibrates laterally, and the car moves up and down at a frequency twice that of the lateral vibration. After the sway of the building is settled, the car pulls the main rope downward in the vertical direction due to its own weight, so that the lateral vibration of the main rope is attenuated.

  The machine room is equipped with a long-period vibration detector that detects long-period shaking of the building. When the long-period vibration detector detects a shake due to an earthquake, the elevator moves up and down the car to a predetermined evacuation floor. With the car stopped at the floor, the operation is resumed after the lateral vibration of the main rope is sufficiently attenuated.

  However, if the car is waiting for natural decay only by its own weight, the lateral vibration does not converge easily, and it takes a long time to resume operation.

  Therefore, Patent Document 1 is provided with the vibration damping device. The vibration damping device has a pair of levers that intersect each other in an X shape, and has a configuration in which a sliding contact member is provided facing the tip portion on the same side of each lever. After the car is stopped on the evacuation floor, the pair of levers are closed, and the guide rail for guiding the car in the vertical direction is gripped by the pair of sliding members. The car is braked by the frictional force generated between the sliding member and the guide rail to suppress the vertical movement of the car due to the lateral vibration, thereby speeding up the convergence of the lateral vibration of the main rope. The gripping force of the pair of sliding contact members is applied by a solenoid.

  In an elevator equipped with the vibration control device, when long-period vibration is detected by the long-period vibration detector, for example, a signal indicating that long-period vibration has been detected (hereinafter referred to as a “long-period vibration detection signal”). )) Is output to the main control device that controls the entire elevator. The main control device that has received the long-period vibration detection signal is attached to the vibration control device, and instructs the vibration control device control unit that controls the vibration control device to operate the vibration control device (specifically, the solenoid Signal to turn on). Upon receiving the vibration control device operation instruction, the vibration control device control unit operates the vibration control device (specifically, energizes the solenoid). More specifically, the damping device control unit has a relay contact that is closed when a damping device operation instruction is received. When the relay contact is closed, the solenoid is energized. ing.

  By the way, in order to realize safe operation, in elevators, periodic inspections of equipment and various devices installed in machine rooms and hoistways are performed. The above vibration control device is no exception and requires inspection. Specifically, this is confirmation of the operation of the vibration damping device when the solenoid is energized.

JP 2014-162575 A JP2015-131695A

  However, in the above-described configuration of the elevator, the vibration damping device is not operated unless long-period vibration is detected by the long-period vibration detector. Need to be activated. For this purpose, for example, the following two methods are conceivable.

  (I) When predetermined data (hereinafter referred to as “operation instruction output data”) is written at a specific address of the EEPROM that the main control device normally has, the vibration suppression control from the main control device. A program for outputting a device operation instruction is incorporated in the main control device. The operation instruction output data is written to the address from a portable maintenance device prepared for regular inspection. The elevator is usually provided with a connector to which the portable maintenance device is connected in a maintenance box provided at the landing, and the portable maintenance device is connected to the connector by connecting the portable maintenance device to the connector. And the main control device are configured to be able to communicate with each other.

  An inspection worker connects the portable maintenance device to the connector at the landing, operates it, and writes the operation instruction output data at the address. Then, since the vibration control device operation instruction is output from the main control device, the solenoid is energized as described above.

  (Ii) opening the lid of the housing of the damping device control unit, short-circuiting specific parts of the circuit board constituting the damping device control unit housed in the housing with lead wires, and the relay contact Is forcibly closed to energize the solenoid.

  However, in the above method (i), the inspection worker operates the portable maintenance device at the landing and writes the operation instruction output data at the address, and then moves to the car where the vibration control device is installed. Then, after visually confirming the operation of the vibration damping device, it is necessary to return to the landing and perform an operation such as erasing the operation instruction output data from the address (if not erased, the vibration damping device continues to operate), It takes a lot of time just to check the vibration control device.

  On the other hand, in the above method (ii), the operation of the vibration damping device can be visually confirmed only by the work (on the car) where the vibration damping device is installed. Although the inspection time can be shortened, a certain level of skill is required to short-circuit specific parts of a complicated circuit board with lead wires. As a result, the vibration damping device control unit may be broken.

  In view of the above-described problems, the present invention provides an inspection system capable of shortening the inspection time more than any of the above-described (i) and (ii) without requiring the skill of an inspection worker. With the goal.

  In order to achieve the above object, an inspection system according to the present invention grips a part of a guide rail that is attached to an upper part of a car that is lifted and lowered by a main rope and guides the car in a vertical direction. An inspection system for confirming the operation of the vibration damping device, wherein the vibration damping device control unit for controlling the vibration damping device and the upper part are installed at a position different from the vibration damping device and are manually operated An inspection switch unit and a main control device that controls the elevator in an integrated manner, the main control device detects an operation state of the inspection switch unit, and based on the detected operation state, When it is determined that an operation instruction for the vibration control device has been issued from the switch unit, an operation instruction is issued to the vibration control device control unit, and the vibration control device control unit is , When the main control unit operates instruction from is made, characterized in that for gripping the guide rail to the vibration damping device.

  The inspection switch unit includes a switch group including a plurality of switches, and the operation state includes a combination of whether each of the switches constituting the switch group is turned on or off. The operation state for determining that the operation instruction has been made in the main control device is an operation state in which the combination includes the first combination, and the main control device further includes an operation state including the second combination. Determining that an instruction for raising the car is issued from the inspection switch unit, and in the case of an operation state including a third combination, determining that an instruction for lowering the car is issued from the inspection switch unit. Features.

  The inspection switch unit further includes a change-over switch that can be switched between a first state that permits the raising / lowering operation of the car and a second state that prohibits the raising / lowering operation of the car. The operation instruction is given to the vibration damping device control unit only while the state is switched to the state 2, and after the operation instruction, based on the detected operation state of the switch group, the inspection switch unit When it is determined that an instruction to stop the vibration damping device has been issued, and when the changeover switch is switched to the first state, the vibration damping device control unit is instructed to stop. When the stop instruction is issued from the main control device, the vibration damping device is caused to release the grip of the guide rail.

  According to the inspection system configured as described above, if the switch unit for inspection placed on the upper part of the same car as the vibration damping device is operated, the vibration damping device is checked on the spot (upper part of the car) (operation check). ) And can be inspected in a short time because it does not move greatly for the inspection. Also, since inspection can be performed by operating the switch, no skill is required.

It is a figure which shows schematic structure of an example of the elevator used as inspection object. It is a front view which shows the schematic structure of the vibration damping apparatus installed in the said car upper part of the said elevator, and the vicinity of the said vibration damping apparatus. It is a top view which shows schematic structure of the said damping device and its vicinity. It is sectional drawing which shows schematic structure of the attachment part to the base of the 1st arm and 2nd arm which comprise the said damping device. In the vibration damping device, the first arm and the second arm are closed, and the car guide rail is gripped by a pair of sliding contact members. (A) is a figure which shows the external appearance of the switch unit for an inspection placed in the upper part of the said elevator car, (b) is a figure which shows the external appearance of the junction box installed in the upper part of the said elevator car. It is a control block diagram in the said elevator containing an inspection system. It is a flowchart which shows the content of a part of program run by CPU of a main control apparatus.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Elevator to be inspected>
(overall structure)
As shown in FIG. 1, an elevator 10 shown as an example of an inspection object is a rope type elevator that employs a traction system as a driving system. A machine room 18 is provided in a part of the building 16 above the uppermost part of the hoistway 14 of the car 12, and a hoisting machine 20 and a deflecting wheel 22 are installed in the machine room 18. A main rope 26 is wound around the sheave 24 and the deflecting wheel 22 that are formed. The hoisting machine 20 includes a hoisting machine motor (not shown) that rotationally drives the shaft 23 to which the sheave 24 is attached, and a brake (not shown) that brakes the shaft 23 to stop the sheave 24 from rotating. Have. The machine room 18 is provided with a motor control unit that drives and controls the hoist motor.

  The car 12 is connected to one end of the main rope 26, and a counterweight 28 is connected to the other end. A pair of car guide rails 30 and 32 and a pair of counterweight guide rails 34 and 36 are laid in the building 16. Each of the guide rails 30, 32, 34, and 36 is made of a steel material and is laid in the vertical direction.

  A pair of guide rollers 38, 40 and a pair of guide rollers 42, 44 are attached to the upper and lower ends of the car 12, respectively, and the car 12 is guided to the guide rail 30 by the guide rollers 38, 40, 42, 44. , 32. Similarly, a pair of guide rollers 46 and 48 and a pair of guide rollers 50 and 52 are attached to the upper and lower ends of the counterweight 28, respectively, and the counterweight 28 is supported by the guide rollers 46, 48, 50 and 52. Is guided along the guide rails 34 and 36.

  The machine room 18 is provided with a long-period vibration detector 140 (not shown in FIG. 1, refer to FIG. 7) for detecting long-period shaking of the building 16 caused by an earthquake or strong wind.

  The machine room 18 is also provided with a main controller 54 that controls the motor control unit and the like of the hoist 20. The main controller 54 has a configuration in which a ROM and a RAM are connected to a CPU. The CPU executes various control programs stored in the ROM to control the motor control unit and the like in an integrated manner so as to realize normal operation such as smooth raising and lowering of the car while detecting the long-period vibration. Control operation is realized based on the detection result of the vessel. That is, the main controller 54 controls the entire elevator 10 in an integrated manner.

  In the elevator 10 configured as described above, when the hoist motor is driven and controlled by the motor control unit based on an instruction from the main controller 54, the sheave 24 is rotated forward or reverse. The wrapped main rope 26 travels, and the car 12 suspended by the main rope 26 is guided by the guide rails 30 and 32 and moves up and down.

  Further, for example, when the long-period vibration of the building 16 is detected by the long-period vibration sensor, the main controller 54 controls various devices such as the hoist 20 to bring the car 12 to a predetermined evacuation floor. Stop. As described above, the operation is resumed after the lateral vibration of the main rope 26 is sufficiently attenuated in a state where the car is stopped on the evacuation floor.

  In this case, the car 12 is provided with damping devices 56 and 58 for suppressing the amplification of the transverse vibration of the main rope 26 as much as possible and promoting the attenuation of the transverse vibration.

(Vibration control device)
The vibration control devices 56 and 58 are respectively installed on the upper portion of the car 12. One vibration control device 56 is provided near the guide roller 38, and the other vibration control device 58 is provided on the other guide roller 40. It is provided in the vicinity. Since the vibration damping device 56 and the vibration damping device 58 have the same configuration, the vibration damping device 56 will be representatively described with reference to FIGS. 2 and 3.

  The vibration damping device 56 is attached to the upper surface of the base 64 fixed to the car 12 via a pair of legs 60 and 62 (the legs 62 appear only in FIG. 3).

  The vibration damping device 56 has a pair of arms 66 and 68 including a first arm 66 and a second arm 68. Both arms 66 and 68 are three-dimensionally crossed in an “X” shape (overlapped state), and the crossed portion is a hexagon socket bolt 70 (hereinafter simply referred to as “bolt 70”) as a rotation axis (pivot). And are attached to the base 64 via bolts 70.

  The attachment part to the base 64 of both the arms 66 and 68 is demonstrated referring FIG. A support column 72 made of a cylindrical member with a flange is attached to the upper surface of the base 64. The strut 72 is fixed to the base 64 by a plurality of bolts (not shown) at its flange 72A. A female screw 72 </ b> B is formed on the inner peripheral surface of the column 72. The first arm 66 and the second arm 68 have through holes 66A and 68A, respectively. Bolts 70 inserted into the through holes 66A and 68A are screwed into the female screw 72B, and both arms 66 and 68 are attached to the base 64. Further, a flat washer 74 and a thrust bearing 76 are fitted in the bolt 70 portion between the first arm 66 and the column 72, and a bolt 70 portion between the second arm 68 and the bolt 70 head 70A is fitted in the bolt 70 portion. The flat washer 78 and the thrust bearing 80 are fitted.

  With the mounting structure described above, the first arm 66 and the second arm 68 are fixed in the vertical direction (up and down direction) indicated by the arrow A with respect to the base 64 and eventually the car 12, and the vertical direction ( It can rotate around the axis of the bolt 70 in a virtual horizontal plane perpendicular to the axis of the bolt 70 (vertical direction).

  Returning to FIG. 3, with respect to the bolt 70, the right end of each of the first and second arms 66, 68 is referred to as “front end 66F, 68F”, and the left end is referred to as “rear end 66R, 68R”. "

  The rear end portion 66R of the first arm 66 and the rear end portion 68R of the second arm 68 are connected by a known pull-type solenoid 82 (hereinafter simply referred to as “solenoid 82”). The solenoid 82 has a solenoid main body 89 in which a coil (not shown) is arranged on an inner wall of a frame including a main frame 84 having a bottomed cylindrical shape and a front frame 88 having a hollow disk shape. When a current is applied to the plunger 86, the plunger 86, which is a mover, retreats toward the main frame 84 side. Here, energizing the coil to retract the plunger 86 toward the main frame 84 side is referred to as turning on the solenoid 82, and shutting off the energization to the coil is referred to as turning off the solenoid 82. .

  As shown in FIGS. 2 and 3, a flat plate portion 86 </ b> A is formed at the distal end portion of the plunger 86 by so-called double chamfering. A through hole (not shown) is formed in the flat plate portion 86A in the thickness direction, and a through hole (not shown) is also formed in the rear end portion 66R of the first arm 66. The rear end portion 66R of the first arm 66 and the plunger 86 are connected to each other in a state in which the rear end portion 66R of the first arm 66 and the plunger 86 are relatively rotatable about the axis of the hooked shaft 90 by the hooked shaft 90 inserted into both through holes. Has been. Note that an E-type retaining ring 92 is fitted into an end portion of the hooked shaft 90 opposite to the hooked portion 90 </ b> A so as to prevent the hooked shaft 90 from coming off from the first arm 66 and the plunger 86. ing.

  As shown in FIG. 3, a connecting member 94 having a flat plate portion 94A is attached to the outer bottom portion of a main frame 84 having a bottomed cylindrical shape. The flat plate portion 94 </ b> A and the rear end portion 68 </ b> R of the second arm 68 are connected in the same manner as described above for the connection between the plunger 86 and the rear end portion 66 </ b> R of the first arm 66. That is, a through hole (not shown) is formed in the thickness direction of the flat plate portion 94A, and a through hole (not shown) is also formed in the rear end portion 68R of the second arm 68. The rear end portion 68R of the second arm 68 and the flat plate portion 94A are coupled to each other by the shaft 96 with the hook inserted in a state in which the second arm 68 is relatively rotatable about the axis of the shaft 96 with the hook. Note that the E-type retaining ring fitted into the end portion of the shaft 96 with the flange opposite to the flange portion does not appear in the figure.

  Between the rear end portion 66R of the first arm 66 and the front frame 88 of the solenoid 82, a return spring 98 made of a compression coil spring is provided in parallel with the plunger 86.

  As shown in FIG. 2, a known ball roller 102 is attached to the lower part of the solenoid 82 via a bracket 100 fixed to the front frame 88. The ball roller 102 mainly supports the weight of the solenoid 82 and allows the solenoid 82 to move in any direction parallel to the upper surface (horizontal plane) of the base 64. In addition, as long as it supports the dead weight of the solenoid 82 and can move the solenoid 82 in an arbitrary direction parallel to the upper surface (horizontal plane) of the base 64, not only the ball roller 102 but also a caster (leg ring), for example. ) May be used.

  Further, a holding means 93 is provided for holding the solenoid 82 that is movable in an arbitrary direction parallel to the upper surface (horizontal plane) of the base 64 at a position shown in FIG. The holding means 93 has a pair of brackets 95 and 97 made of an L-shaped angle member standing on the base 64. One bracket 95 is provided in the vicinity of the front frame 88, and the other bracket 97 is provided in the vicinity of the outer bottom portion of the main frame 84. A compression coil spring 99 is provided between the bracket 95 and the front frame 88 in parallel with the axial center of the plunger 86, and similarly between the bracket 97 and the outer bottom portion of the main frame 84, the shaft of the plunger 86 is also provided. A compression coil spring 101 is provided in parallel with the core. Both compression coil springs 99 and 101 have the same specifications, and are provided in a state compressed from the free length by the same length. Thus, the solenoid body 89 is held at the position shown in FIG. 3 by the restoring force of both the compression coil springs 99 and 101. The elastic member for holding the solenoid body 89 in the position shown in FIG. 3 is not limited to the compression coil spring, and a tension coil spring may be used.

  In the above configuration, when the solenoid 82 is turned on, the plunger 86 is retracted toward the main frame 84, and accordingly, the rear end portion 66R of the first arm 66 and the rear end portion 68R of the second arm 68 are relative to each other. The first arm 66 rotates clockwise and the second arm 68 rotates counterclockwise around the axial center of the bolt 70. As a result, the distal end portion 66F of the first arm 66 and the distal end portion 68F of the second arm 68 approach each other. Further, the distance between the front frame 88 and the rear end portion 66B of the first arm 66 is shortened, and the return spring 98 is compressed.

  When the solenoid 82 is turned off, the restoring force of the return spring 98 returns the plunger 86 to the position shown in FIG. Along with this, the rear end portion 66R of the first arm 66 and the rear end portion 68R of the second arm 68 are relatively separated from each other, and the first arm 66 is counterclockwise about the axis of the bolt 70, The second arm 68 rotates clockwise and returns to the position shown in FIG. As a result, the distal end portion 66F of the first arm 66 and the distal end portion 68F of the second arm 68 are also separated from each other and returned to the position shown in FIG.

  In each of the first and second arms 66 and 68, the distance from the axial center of the bolt 70 to the front end is set shorter than the distance to the rear end. Thereby, the 1st type lever (lever) which makes the volt | bolt 70 a fulcrum, has both rear ends as a force point, and has both ends as an action point is constituted. Here, when the solenoid 82 is turned on and the tip portions 66F and 68F of the first and second arms 66 and 68 are brought close to each other is referred to as “the arm is closed”, and the solenoid 82 is turned off and the return spring is turned on. The fact that the tip portions 66F and 68F of the first and second arms 66 and 68 are separated from each other by the restoring force of 98 and returned to the original position is referred to as “arm opening”. In addition, the completion of each operation and the continued state are referred to as “arm closed state” and “arm open state”, respectively. The on / off control of the solenoid 82 is also performed by the main controller 54 (FIG. 1) via a signal line (not shown).

  A pair of sliding contact members 104 are attached to the tip portions 66F and 68F of the first and second arms 66 and 68, respectively. The attachment member and the attachment aspect to the front-end | tip parts 66F and 68F of each sliding contact member 104 are the same. Therefore, the attachment member and the attachment mode to the distal end portion 68F will be described, and the attachment member for the distal end portion 66F will be assigned the same reference numeral as the attachment member for the distal end portion 68F, and the description thereof will be omitted.

  As shown in FIGS. 2 and 3, the sliding contact member 104 is a track-like plate (for track and field). The sliding contact member 104 is made of a sintered metal body, for example.

  The sliding contact member 104 is joined to a square mounting plate 106. The mounting plate 106 is made of, for example, a steel material. A through hole (not shown) is opened in the thickness direction of the mounting plate 106, and a through hole (not shown) corresponding to the through hole is also opened at the distal end portion 68 </ b> F of the second arm 68. .

  A low-head hexagon socket head cap screw 108 (hereinafter simply referred to as “bolt 108”) is inserted into both the through holes. As shown in FIG. 2, a thrust bearing 110 is extrapolated at the bolt 108 portion between the head portion 108A of the bolt 108 and the top surface of the tip portion 68F, and between the bottom surface of the tip portion 68F and the mounting plate 106. A thrust bearing 112 is externally attached to the bolt 108 portion. A nut 114 is fastened to the lower end portion of the threaded portion of the bolt 108. As a result, the mounting plate 106, and thus the sliding contact member 104, is attached to the tip end portion 68F so as to be rotatable about the axis of the bolt 108.

  The operation of the vibration damping device 56 having the above configuration will be described. During normal operation, the state where the solenoid 82 is turned off and the arm is opened is maintained, and as shown in FIG. 3, both sliding members 104 are separated from the guide rail 30 (the guide rail for the car). 30 and a non-contact state.)

  As part of the control operation, when the solenoid 82 is turned on and the arm is closed while the car 12 (FIG. 1) is stopped, the sliding contact members 104 are pressed against the car guide rails 30 in opposite directions. As shown in FIG. 5, the car guide rail 30 is gripped by both sliding contact members 104.

  Considering the coefficient of friction between the sliding member 104 and the guide rail 30, the gripping force applied by the solenoid 82 allows the vertical movement of the car 12 due to the lateral vibration of the main rope 26 due to an earthquake or the like. It is set to such an extent that the resistance due to is given to the vertical movement. Thereby, compared with the case where the car 12 is freely moved up and down, the resistance due to the friction suppresses the vertical movement of the car due to the lateral vibration, so that the convergence of the lateral vibration of the main rope is accelerated. .

<Inspection system>
A system for checking the vibration damping devices 56, 58 and the like will be described with reference to FIGS.

  An inspection switch unit 120 is shown in FIG. The inspection switch unit 120 is placed at a position different from the vibration damping devices 56 and 58 in the upper part of the car 12 (FIG. 1). When the elevator 10 is inspected, an operator who has entered the upper part of the car 12 It is operated by hand (manual operation).

  The inspection switch unit 120 includes a switch group 130 including a plurality of (four in this example) push button switches 122, 124, 126, and 128 and a changeover switch 132. The selector switch 132 is a selector switch as shown in the figure.

  The selector switch 132 is switched between the RUN side and the STOP side. When both automatic operation and manual operation of the car 12 are allowed, the knob is set to the RUN side as shown in the figure. Here, the automatic operation means that the car 12 is moved up and down by the main controller 54 in accordance with the pressing state of a call button (not shown) installed at the landing on each floor. As will be described later, the manual operation means that the car 12 is moved up and down by the main controller 54 in accordance with a manual operation state of the switch group 130 by an operator.

  When both automatic operation and manual operation of the car 12 are prohibited (that is, when the car 12 is not desired to be lifted or lowered), the knob of the changeover switch 132 is switched to the STOP side.

  Needless to say, the push button switches 122, 124, 126, and 128 are ON only when the respective buttons are pressed, and are OFF when the buttons are not pressed. Here, the push button switches 122, 124, 126, and 128 are referred to as “DOOR switch”, “UP switch”, “RUN switch”, and “DOWN switch”, respectively, and the buttons of the switches are respectively “DOOR buttons”. , “UP button”, “RUN button”, and “DOWN button”.

  The DOOR switch is operated when opening and closing a car door (not shown). When the car door is opened, the DOOR button is pressed for a short time. When the car door is closed, the DOOR button is pressed again for a short time. That is, every time the DOOR button is pressed by the worker, the door opening and closing operations are repeated.

  When raising the car 12 by manual operation, both the UP button and the RUN button are pressed simultaneously. The car 12 is raised while both the UP switch and the RUN switch are turned on simultaneously.

  When the car 12 is lowered by manual operation, both the DOWN button and the RUN button are pressed simultaneously. The car 12 is lowered while the DOWN switch and the RUN switch are simultaneously turned on.

  An operator who has entered the upper part of the car 12 operates the switch group 130 of the inspection switch unit 120 to inspect equipment in the hoistway 14 while raising and lowering the car 12 as necessary. . For example, the counterweight 28 works on whether the guide rails 30, 32, 34, 36 are damaged, whether the guide rails 30, 32, 34, 36 are loosely mounted on the hoistway 14 wall, or on the car 12. In the state where it is moved to the position in front of the worker's eyes, the balance weight 28 is checked for defects.

  The above is the function assigned to each switch in the switch group of the conventional general inspection switch unit.

  In the present embodiment, it is assumed that the vibration control devices 56 and 58 are newly installed in an existing elevator that does not include the vibration control devices 56 and 58 and the elevator 10 is configured. Can be used to check the additionally installed vibration control devices 56 and 58.

  In other words, switches (UP switch, RUN switch, DOWN switch) that are originally assigned for the manual lifting operation of the car 12 are used for the inspection of the vibration control devices 56 and 58.

  Specifically, in this example, when three of the UP button, the RUN button, and the DOWN button are pressed at the same time (for example, continuously pressed for at least 2 seconds), the vibration control devices 56 and 58 are moved to the car. The guide rails 30 and 32 are gripped, and when the UP button, the RUN button, and the DOWN button are pressed simultaneously for a long time, the damping devices 56 and 58 release the grips of the car guide rails 30 and 32. I try to let them. Details of this control content will be described later.

FIG. 6B shows a known junction box 13 installed at the top of the car 12.
4. The junction box 134 is a facility for coupling or relaying wires extending from the main control device 54, the inspection switch unit 120, and a vibration control device control unit 138 (FIG. 7) described later. . The junction box 134 has a selector switch 136 for switching between automatic operation and manual operation. When the knob of the selector switch 136 is turned to the automatic side, automatic operation is possible and manual operation is prohibited. On the other hand, when the knob of the selector switch 136 is turned to the manual side, automatic operation is prohibited and manual operation is possible.

A control block diagram of the inspection system including the inspection switch unit 120 is shown in FIG.
As shown in FIG. 7, wiring between the main control device 54, the inspection switch unit 120, and the vibration control device control unit 138 is made around the junction box 134.

  The main controller 54 and the inspection switch unit 120 are wired via a selector switch 136 (FIG. 6B). When the knob of the selector switch 136 is turned to the manual side, the main controller 54 and the inspection switch unit 120 are electrically connected. On the other hand, when the knob of the selector switch 136 is turned to the automatic side, the main control device 54 is turned on. The device 54 and the inspection switch unit 120 are electrically disconnected. The main controller 54 checks the switching state of the selector switch 136 and determines whether to perform automatic operation or manual operation.

  The main controller 54 checks whether each switch constituting the inspection switch unit 120 is in an ON state or an OFF state while the knob of the selector switch 136 is turned to the manual side.

  The wiring between the main control device 54 and the vibration control device control unit 138 is relayed at the junction box 134.

  The vibration damping device control unit 138 controls the vibration damping devices 56 and 58 in accordance with an instruction given from the main control device 54. Specifically, when the vibration control device operation instruction is issued from the main control device 54, the vibration control device control unit 138 operates the vibration control devices 56 and 58 (specifically, the solenoid 82 (FIG. 3, FIG. On the other hand, when the vibration control device stop instruction is issued from the main control device 54, the vibration control devices 56 and 58 are stopped (specifically, the solenoid 82 (FIGS. 3 and 5) is turned OFF). ).

  After the long-period vibration detector 140, which has detected long-period vibration during automatic operation, outputs a long-period vibration detection signal to the main controller 54, the contents of control until the vibration control devices 56 and 58 are activated are described in [Background Since it is the same as the prior art explained in [Technology], the explanation is omitted.

  Control contents after the selector switch 136 of the junction box 134 has been switched to the manual side for inspection by an operator who has entered the upper part of the car 12 will be described with reference to the flowchart shown in FIG. The flowchart shown in FIG. 8 shows the contents of a program executed by the CPU of the main control device 54. The program is stored in the ROM (FIGS. 1 and 7), and is one of the subroutines constituting the main routine of the program under inspection that is started when the selector switch 136 is switched to the manual side. The other subroutines (for example, opening / closing control of the car 12 door) are not the main point of the present invention, and thus the description thereof is omitted. In the flowchart of FIG. 8, the UP switch (push button switch 124), the RUN switch (push button switch 126), and the DOWN switch (push button switch 128) are expressed as “USw”, “RSw”, and “DSw”, respectively. .

  The main controller 54 (CPU) determines whether the changeover switch 132 is on the STOP side or the RUN side (step S1). If it is determined that the changeover switch 132 is on the STOP side, the process proceeds to step S2, and the UP switch and DOWN switch , And whether all of the RUN switches are turned on.

  If it is determined that all are ON (YES in step S2), it is determined whether or not the time is being measured by an internal timer (not shown) (step S3). This internal timer is used to measure the time during which the UP switch, DOWN switch, and RUN switch are turned on simultaneously.

  If it is determined that the time is not being measured (NO in step S3), it is detected for the first time in step S2 that all of the UP switch, the DOWN switch, and the RUN switch are turned on, so the internal timer is reset (step S4). After that, the timing is started (step S5).

  It is determined whether the measurement time by the internal timer has passed 2 seconds (step S6). If 2 seconds have not yet passed (NO in step S6), all of the UP switch, DOWN switch, and RUN switch It is determined whether or not is ON (step S7).

  When all of them are ON (YES in step S7), the process returns to step S6 while continuing the time measurement by the internal timer. On the other hand, if any one of the UP switch, the DOWN switch, and the RUN switch is OFF (NO in step S7), it means that the UP switch, the DOWN switch, and the RUN switch are not pressed at the same time. Therefore, after resetting the internal timer (step S8), the process returns to the main routine (not shown).

  On the other hand, if it is determined in step S6 that 2 seconds have elapsed (YES in step S6), the UP switch, the DOWN switch, and the RUN switch are pressed at the same time, so the process proceeds to step S9 and the internal flag f is checked. The internal flag f is an internal flag that is set to f = 1 immediately after an operation instruction is given to the vibration control device control unit 138 and reset to f = 0 immediately after a stop instruction is issued. Therefore, by checking the internal flag f, it can be determined whether the vibration control devices 56 and 58 are operating or not. When the program is started, the internal flag f is set to f = 0 as an initial setting. In the above example, it is determined that the push button is continuously pressed for 2 seconds, so that it is determined to be “long press”. However, the determination time is not limited to 2 seconds, and may be arbitrarily set. Can do.

  If it is determined in step S9 that f = 0 (NO in step S9), the main control device 54 (CPU) instructs the vibration control device control unit 138 to operate (step S10), and sets the internal flag f to 1. (Step S11). In response to the operation instruction, the vibration control device control unit 138 operates the vibration control devices 56 and 58.

  On the other hand, if it is determined in step S9 that f = 1 (YES in step S9), the main control device 54 (CPU) issues a stop instruction to the vibration control device control unit 138 (step S12), and the internal flag f is set to 0. Reset (step S13). The vibration damping device control unit 138 that has received the stop instruction stops the vibration damping devices 56 and 58 (releases the gripping of the guide rails 30 and 32 by the vibration damping devices 56 and 58).

  Thus, the operation state of the inspection switch unit 120 (in this example, the ON and OFF states of the switches constituting the switch group 130) is detected by the main controller 54 (CPU) (steps S2 and S7). When it is determined that an operation instruction has been issued from the inspection switch unit 120 based on the detected operation state [when the internal flag f = 0, the UP switch, the DOWN switch, and the RUN switch are simultaneously pressed and held (steps S6 and S9). An operation instruction is issued to the vibration damping device control unit 138 (step S10). Then, the vibration control device control unit 138 that has received the operation instruction operates the vibration control devices 56 and 58.

  As a result, if the inspection switch unit 120 placed on the upper part of the same car 12 as the vibration damping devices 56 and 58 is operated, the vibration damping devices 56 and 58 are checked (operation confirmation) on the spot (the upper part of the car 12). Since there is no significant movement of the place for the inspection, the inspection can be performed in a short time. Moreover, since inspection can be performed by operating the switch, no skill is required.

  If it is determined in step S3 that the time is being measured by the internal timer (YES in step S3), the process returns through step S4 to step S13. If YES is determined in step S3, the simultaneous long pressing state of the UP switch, the DOWN switch, and the RUN switch has continued for more than 2 seconds. This is because either step S10) or stop instruction (step S12) has already been made.

  If any one of the UP switch, the DOWN switch, and the RUN switch is OFF in step S2 (NO in step S2), it is determined whether the time is being measured by the internal timer (step S14). If the time is being measured, the simultaneous long press state exceeding 2 seconds of the UP switch, the DOWN switch, and the RUN switch is released, so the internal timer is reset (step S15) and the process returns. If the time is not being measured (NO in step S14), the process returns through step S15.

  If the main controller 54 (CPU) determines in step S1 that the changeover switch 132 is on the RUN side (YES in step S1), it checks the internal flag f (step S16). When f = 1 (YES in step S16), since the guide rails 30 and 32 are gripped by the vibration damping devices 56 and 58, the main control device 54 (CPU) controls the vibration damping device control unit 138. A stop instruction is issued (step S17), the gripping of the guide rails 30 and 32 by the damping devices 56 and 58 is released, the internal flag f is reset to 0 (step S18), and the process proceeds to step S19. Thereby, it is possible to prevent the car 12 from being raised and lowered while the guide rails 30 and 32 are gripped by the vibration damping devices 56 and 58.

  On the other hand, if f = 0 (NO in step S16), the process passes through steps S17 and S18 and proceeds to step S19, where it is determined whether the UP switch and the RUN switch are turned on simultaneously. If both are turned on at the same time, the motor control unit is instructed to rise (step S20).

  If the UP switch and the RUN switch are not turned on at the same time (NO in step S19), the process proceeds to step S21 to determine whether the DOWN switch and the RUN switch are turned on at the same time. A lowering instruction is given to the motor control unit (step S22).

  As a result, the car 12 is raised while the UP switch and the RUN switch are simultaneously turned on, and the car 12 is lowered while the DOWN switch and the RUN switch are simultaneously turned on.

  If any combination of the UP switch and the RUN switch and the DOWN switch and the RUN switch are not turned on at the same time, the process returns through steps S20 and S22.

  As described above, the inspection system according to the present invention has been described based on the embodiment. However, the present invention is not limited to the above-described form, and may be, for example, the following form.

  (1) In the above embodiment, the UP switch, the DOWN switch, and the RUN switch among the switches constituting the switch group 130 are allocated to check the operation of the vibration damping devices 56 and 58. The combination for the purpose of 58 operation confirmations is not limited to this, and is arbitrary as long as it does not overlap with assignments for other purposes. For example, a combination of a DOOR switch and a RUN switch may be used.

  Further, in the above embodiment, the same combination (a combination of the UP switch, the DOWN switch, and the RUN switch) is used when the vibration control devices 56 and 58 are operated and stopped. The combination may be different.

  Furthermore, in the above-described embodiment, when the vibration control devices 56 and 58 are operated or stopped, a switch composed of a specific combination (in the above example, the UP switch, the DOWN switch, and the RUN switch) is pressed and held. Although it was decided to do so, it may be a short press.

  (2) In the above embodiment, the push button switch is used for each of the switches constituting the switch group 130 of the inspection switch unit 120. However, the present invention is not limited thereto, and for example, a rocker switch or a toggle switch may be used. .

  (3) The vibration damping devices 56 and 58 to be inspected in the above-described embodiment cause the guide rails to be gripped by the pair of sliding contact members 104 provided at the distal ends of the pair of arms 66 and 68 when an earthquake occurs. The sliding vibration of the main rope is attenuated by the friction force generated between the sliding contact member 104 and the guide rail by sliding the sliding contact member 104 in the vertical direction on the guide rail. The vibration damping device is not limited to such a type of vibration damping device 56, 58, and may be, for example, a vibration damping device described in Patent Document 2.

  In the vibration damping device described in Patent Document 2, the guide rail is gripped by a pair of fixing members provided at the tip portions of a pair of arms via an attenuator (for example, an oil damper) when an earthquake occurs. The fixing member is immovable with respect to the guide rail in the gripping state, and attenuates the lateral vibration of the main rope by the function of the oil damper.

  In short, the inspection system according to the present invention can be applied to a vibration damping device of a type that is installed on the upper part of the car and grips a part of the guide rail.

  (4) In the above embodiment, the vibration damping device to be inspected is described based on an example in which the vibration damping device is installed in an elevator having a machine room. However, the inspection system according to the present invention includes a hoisting machine and a main machine in a hoistway. It is also possible to use a control panel or the like when inspecting a vibration damping device installed in a so-called machine room-less elevator that has eliminated the machine room above the hoistway.

  The inspection system according to the present invention can be suitably used, for example, for inspection of a vibration damping device attached to the upper part of an elevator car.

54 Main control device 120 Switch unit for inspection 138 Damping device control unit

Claims (3)

In an elevator, an inspection system for confirming the operation of a vibration damping device that is attached to an upper part of a car that is hung by a main rope and that moves up and down, and that grips a part of a guide rail that guides the car in the vertical direction,
A damping device control unit for controlling the damping device;
In the upper part, a switch unit for inspection that is installed at a position different from the vibration damping device and is manually operated,
A main control device for controlling the elevator in an integrated manner;
Including
The main control device detects an operation state of the inspection switch unit, and determines that an operation instruction of the vibration suppression device is issued from the inspection switch unit based on the detected operation state. Instruct the unit to operate,
The vibration damping device control unit causes the vibration damping device to grip the guide rail when an operation instruction is given from the main control device. The inspection switch unit has a switch group including a plurality of switches,
The operation state includes a combination of whether each of the switches constituting the switch group is turned on or off,
The operation state in which it is determined that an operation instruction has been made in the main controller is an operation state in which the combination includes the first combination,
The main control device further includes:
In the case of an operation state including the second combination, it is determined that an instruction to raise the car is issued from the inspection switch unit,
2. The inspection system according to claim 1, wherein in the case of an operation state including a third combination, it is determined that an instruction to lower the car is issued from the inspection switch unit. The inspection switch unit further includes a changeover switch that can be switched between a first state that allows the car to move up and down and a second state that prohibits it.
The main control device issues the operation instruction to the vibration control device control unit only while the changeover switch is switched to the second state, and after the operation instruction, Based on the operation state, when it is determined that the inspection switch unit is instructed to stop the vibration control device, and when the changeover switch is switched to the first state, the vibration control device control unit, I give a stop instruction,
The inspection system according to claim 2, wherein the vibration damping device control unit causes the vibration damping device to release the grip of the guide rail when a stop instruction is issued from the main control device.

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