JP2016216207A - elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an elevator capable of converging a swing of a rope within a hoistway and of returning to normal operation at an early stage.SOLUTION: An elevator comprises: a hoistway (2) having a pair of guide rails (3a and 3b) extending in a vertical direction so as to face each other; a lifting body (5) lifted up and down in the hoistway (2) along the pair of guide rails (3a and 3b); a rope (8) being coupled to the lifting body (5) and suspended along the hoistway (2); and a swing stopping mechanism (30) being laid between the guide rails (3a and 3b) and supported by the guide rails (3a and 3b) so as to be able to be lifted up and down. The swing stopping mechanism (30) restrains a swing of the rope (8) in a transverse direction of the hoistway (2) by self-traveling in a height direction of the hoistway (2) in a state of being brought into contact with the rope (8) when the lifting body (5) is stopped.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to an elevator including an anti-sway mechanism for converging rope runout.

  For example, when long-period vibration caused by an earthquake or strong wind acts on the elevator, the main rope that suspends the car and the counterweight on the hoistway may swing in the lateral direction of the hoistway. In particular, in a high-rise elevator, the overall length of the main rope increases, so the swing width of the main rope increases.

  When the operation of the elevator is continued in a state where the main rope is greatly shaken, the swing of the main rope is transmitted to the car, which is one factor that causes a deterioration in the ride comfort. Conventionally, as a countermeasure, when a long-period vibration occurs, a long control operation is performed in which the car is stopped at the nearest floor to stop the operation of the elevator.

JP 2012-184053 A JP 2007-119131 A

  Once the long control operation is activated, it is not released until the main rope swing converges, and the elevator operation is stopped. The time until the main rope swing converges depends on the magnitude of the long-period vibration and the length of the main rope, but generally takes one hour. Therefore, there is a problem that it takes a long time for the elevator to stop operating and return to normal operation.

  An object of the present invention is to obtain an elevator capable of converging rope swings in a hoistway and returning to normal operation at an early stage.

  According to the embodiment, the elevator includes a hoistway having a pair of guide rails extending in the vertical direction so as to face each other, an elevating body that is moved up and down the hoistway along the guide rail, and the elevating body A rope that is coupled and hangs down along the hoistway, and a steadying mechanism that is supported by the guide rail so as to be movable up and down across the guide rail. The steadying mechanism restrains the swinging of the rope in the lateral direction of the hoistway by self-propelling in the height direction of the hoistway while in contact with the rope when the hoisting body is stopped. Is configured to do.

1 is a side view schematically showing an elevator according to a first embodiment. It is a top view of the steadying mechanism used in 1st Embodiment. FIG. 3 is a side view of the steady rest mechanism viewed from the direction of arrow F3 in FIG. 2. It is sectional drawing which follows the F4-F4 line | wire of FIG. It is sectional drawing which follows the F5-F5 line | wire of FIG. In 1st Embodiment, it is a side view which shows the state by which the steadying mechanism was hold | maintained in the standby position of the uppermost part of the hoistway via the stopper mechanism. In 1st Embodiment, it is a side view which shows the state by which holding | maintenance of the steadying mechanism by a stopper mechanism was cancelled | released. In 1st Embodiment, it is a flowchart which shows operation | movement of an elevator when a shake detector detects a long period vibration. It is a perspective view of the magnetic-type guide apparatus which concerns on 2nd Embodiment. It is a perspective view of the magnet unit used in 2nd Embodiment. It is sectional drawing which shows the magnetic circuit of the magnet unit used in 2nd Embodiment.

[First embodiment]
Hereinafter, the first embodiment will be described with reference to FIGS. 1 to 8.

  FIG. 1 schematically shows a traction elevator 1 employing 1: 1 roping. As shown in FIG. 1, an elevator 1 includes a hoistway 2, a pair of first guide rails 3a and 3b, a pair of second guide rails 4a and 4b, a car 5, a counterweight 6, and a hoisting machine 7. A plurality of main ropes 8 are provided as main elements.

  The hoistway 2 is provided in a building such as a high-rise building and is erected along the vertical direction. The first guide rails 3 a and 3 b and the second guide rails 4 a and 4 b extend in a straight line along the height direction of the hoistway 2 and are parallel to each other in the width direction of the hoistway 2. Is arranged.

  The car 5 is supported by the hoistway 2 through the first guide rails 3a and 3b so as to be movable up and down. The car 5 includes a car frame 9 and a car body 10. The car frame 9 has left and right vertical frames 11 a and 11 b, a lower beam 12, and an upper beam 13. The vertical frames 11a and 11b extend in the height direction of the hoistway 2 between the first guide rails 3a and 3b. The lower beam 12 is bridged horizontally between the lower ends of the vertical frames 11a and 11b. The upper beam 13 is bridged horizontally between the upper ends of the vertical frames 11a and 11b.

  The car body 10 is a box-shaped element on which passengers get on and off, and is supported by a car frame 9. The car body 10 is surrounded by left and right vertical frames 11 a and 11 b, a lower beam 12, and an upper beam 13.

  Lower guide devices 14a and 14b are attached to the left end and the right end of the lower beam 12, respectively. The lower guide devices 14a and 14b sandwich the blade 3c of the first guide rails 3a and 3b from three directions.

  The upper beam 13 is located above the car body 10. Upper guide devices 15a and 15b are attached to the left end and the right end of the upper beam 13, respectively. The upper guide devices 15a and 15b sandwich the blade 3c of the first guide rails 3a and 3b from three directions, and cooperate with the lower guide devices 14a and 14b to move the car 5 along the first guide rails 3a and 3b. It is supported so that it can move up and down.

  The counterweight 6 is supported by the hoistway 2 through the second guide rails 4a and 4b so as to be movable up and down.

  The hoisting machine 7 is installed in a machine room 17 at the upper end of the hoistway 2. The main rope 8 is wound around the drive sheave 7a of the hoisting machine 7 and suspends the car 5 and the counterweight 6 to the hoistway 2 so as to be movable up and down by 1: 1 roping. Therefore, the car 5 and the counterweight 6 can be rephrased as lifting bodies, respectively.

  Furthermore, a control device 18 is installed in the machine room 17. The control device 18 includes an operation control unit 19 and a shake control control unit 20. The operation control unit 19 is electrically connected to the hoisting machine 7, and controls the operation of the hoisting machine 7 in the direction to wind up or rewind the main rope 8, thereby the car 5 and the counterweight 6. Is moved up and down along the hoistway 2.

  The vibration control controller 20 is electrically connected to a vibration sensor 21. The shake sensor 21 is an example of a detection unit that detects long-period vibrations acting on the hoistway 2. The shake detector 21 is an acceleration sensor, for example, and outputs the shake of the building in which the elevator 1 is installed as an electrical signal based on the acceleration. The acceleration detected by the shake sensor 21 is input to the shake control control unit 20. The operation control unit 19 stops the operation of the elevator 1 when long-period vibration is detected by the vibration control control unit 20. In other words, the elevator 1 shifts from the normal operation to the long control operation.

  As shown in FIGS. 1 and 2, the plurality of main ropes 8 are arranged at predetermined intervals in the width direction and the depth direction of the hoistway 2. One end of the main rope 8 is connected to the central portion of the upper beam 13 of the car 5. The other end of the main rope 8 is connected to the center of the upper end of the counterweight 6. For this reason, the main rope 8 includes a first portion 8 a connecting the drive sheave 7 a of the hoisting machine 7 and the upper beam 13 of the car 5, the drive sheave 7 a of the hoisting machine 7, and the counterweight 6. And a second portion 8b connecting the two. The first part 8 a and the second part 8 b hang down from the machine room 17 to the hoistway 2.

  Furthermore, a compensating rope 23 is bridged between the bottom of the car 5 and the lower end of the counterweight 6. The compensating rope 23 hangs down from the car 5 and the counterweight 6 toward the bottom pit of the hoistway 2.

  As shown in FIG. 1, a self-propelled steadying mechanism 30 is provided in the hoistway 2. The steadying mechanism 30 is an element for suppressing the swinging of the main rope 8 that suspends the car 5 from the hoistway 2, and the details of the steadying mechanism 30 will be described below.

  As shown in FIGS. 2 to 5, the steadying mechanism 30 includes a frame 31 straddling horizontally between the first guide rails 3 a and 3 b. The frame 31 has a pair of support beams 32a and 32b. The support beams 32 a and 32 b extend horizontally in the width direction of the hoistway 2 and are arranged in parallel in the depth direction of the hoistway 2 with a space between each other. Flange portions 33 projecting horizontally are formed at the upper and lower ends of the support beams 32a and 32b, respectively.

  As best shown in FIGS. 1 and 6, first to fourth guide devices 35 a, 35 b, 35 c, and 35 d are attached to the frame 31. The 1st thru | or 4th guide apparatus 35a, 35b, 35c, 35d is an element for supporting the flame | frame 31 of the steadying prevention mechanism 30 to the 1st guide rail 3a, 3b so that raising / lowering is possible.

  The first guide device 35a and the second guide device 35b are positioned on the upper surface and the lower surface of the left end portion of the frame 31 so as to correspond to the first guide rail 3a. The third guide device 35c and the fourth guide device 35d are positioned on the upper surface and the lower surface of the right end portion of the frame 31 so as to correspond to the other first guide rail 3b.

  The first to fourth guide devices 35a, 35b, 35c, and 35d have a common configuration. Therefore, in this embodiment, it demonstrates on behalf of the 1st guide apparatus 35a, attaches | subjects the same referential mark about the other guide apparatuses 35b, 35c, and 35d, and abbreviate | omits the description.

  As shown in FIGS. 2 to 4, the first guide device 35 a includes a pedestal 36, a roller bracket 37, first to third rollers 38 a, 38 b, 38 c and a motor 39 as main elements.

  The pedestal 36 is horizontally fixed across the flange portion 33 at the upper end of the support beams 32a and 32b. The pedestal 36 has an end wall 36a that is adjacent to the first guide rail 3a and is erected from the end opposite to the first guide rail 3a. Further, the upper surface of the pedestal 36 constitutes a flat guide surface 36b.

  The roller bracket 37 includes a base portion 41, a pair of roller support walls 42a and 42b, and a pair of spring receivers 43a and 43b. The base portion 41 is slidably stacked on the guide surface 36b of the pedestal 36. A plurality of long holes 44 are formed in the base portion 41. Each of the long holes 44 extends in the longitudinal direction of the frame 31. Bolts 45 are inserted through the long holes 44. The bolt 45 passes through the long hole 44 and is screwed into the pedestal 36 so that the base portion 41 can move in the longitudinal direction of the long hole 44.

  Therefore, the roller bracket 37 is held on the guide surface 36b of the pedestal 36 so as to be movable in a direction approaching or moving away from the first guide rail 3a.

  The roller support walls 42a and 42b are erected from the base portion 41 so as to be adjacent to the first guide rail 3a. One roller support wall 42a has a first wall portion 46a extending along the blade 3c of the first guide rail 3a, and a second wall portion 46b extending in a direction perpendicular to the blade 3c. ing. The other roller support wall 42b extends in a direction orthogonal to the blade 3c of the first guide rail 3a and is opposite to the one roller support wall 42a with the blade 3c of the first guide rail 3a interposed therebetween. Located on the side.

  The first roller 38a is an element that is in rolling contact with the tip edge 3d of the blade 3c of the first guide rail 3a, and is supported by the first wall 46a of the roller support wall 42a. The second roller 38b is an element that is in rolling contact with one side surface 3e of the blade 3c of the first guide rail 3a, and is supported by the second wall portion 46b of the roller support wall 42a. The third roller 38c is an element that is in rolling contact with the other side surface 3f of the blade 3c of the first guide rail 3a, and is supported by the other roller support wall 42b.

  For this reason, the first to third rollers 38a, 38b, and 38c are brought into rolling contact with the first guide rail 3a from three directions so that the frame 31 of the steady stop mechanism 30 is moved along the first guide rail 3a. It is supported so that it can move up and down.

  The motor 39 is integrally incorporated in the hub of the first roller 38a via a speed reduction mechanism (not shown). The first roller 38 a receives the torque transmitted from the motor 39 and rotates in the forward direction and the reverse direction.

  Furthermore, the steady rest mechanism 30 of this embodiment is equipped with a plurality of rechargeable batteries 40. The battery 40 is a power source for driving the motor 39 included in the first to fourth guide devices 35 a, 35 b, 35 c, and 35 d and is mounted on the frame 31 of the steadying mechanism 30.

  The spring receivers 43a and 43b are erected from the base portion 41 at positions away from the roller support walls 42a and 42b. The spring receivers 43 a and 43 b face the end wall 36 a of the pedestal 36. A pair of compression coil springs 47 a and 47 b are interposed between the spring receivers 43 a and 43 b and the end wall 36 a of the pedestal 36. The compression coil springs 47a and 47b are an example of an elastic body, and urge the roller bracket 37 toward the first guide rail 3a. In other words, the compression coil springs 47a and 47b press the outer peripheral surface of the first roller 38a against the tip edge 3d of the blade 3c of the first guide rail 3a.

  As a result, when the first roller 38a is rotated by receiving torque from the motor 39, the first roller 38a is prevented from idling or slipping with respect to the first guide rail 3a. A desired frictional resistance is generated between 38a and the first guide rail 3a.

  As shown in FIGS. 2 and 5, a pair of rope guides 50 a and 50 b are attached to the central portion along the longitudinal direction of the frame 31. The rope guides 50a and 50b are formed in a plate shape by a synthetic resin or a rubber-like elastic body that is softer than the main rope 8, for example. According to the present embodiment, the rope guides 50 a and 50 b are fixed between the support beams 32 a and 32 b of the frame 31 and are arranged at intervals in the height direction of the hoistway 2.

  A plurality of insertion holes 51 are formed in the rope guides 50a and 50b. The insertion holes 51 are arranged at intervals so as to correspond to the plurality of main ropes 8, and the main ropes 8 are individually inserted into the insertion holes 51.

  As the main rope 8 passes through the rope guides 50a and 50b, the swing of the main rope 8 in the lateral direction of the hoistway 2 is restricted. A clearance C of, for example, about 1 mm is secured between the outer peripheral surface of the main rope 8 and the inner peripheral surface of the insertion hole 51.

  As shown in FIGS. 1, 3 and 6, a stopper mechanism 54 is installed at the upper end of the hoistway 2. The stopper mechanism 54 is an element for holding the steady rest mechanism 30 at the uppermost standby position L1 of the hoistway 2. The standby position L <b> 1 is defined above the top floor stop position of the car 5.

  The stopper mechanism 54 includes a pair of support arms 55a and 55b. One support arm 55a is installed at the upper end of the first guide rail 3a via a bracket 56a. Similarly, the other support arm 55b is installed at the upper end of the first guide rail 3b via a bracket 56b.

  Further, the support arms 55a and 55b are rotatable between a first position P1 shown in FIG. 6 and a second position P2 shown in FIG. In the first position P1, the support arms 55a and 55b project horizontally between the first guide rails 3a and 3b. In the second position P2, the support arms 55a and 55b are erected vertically along the first guide rails 3a and 3b, and are retracted from between the first guide rails 3a and 3b.

  Further, the support arms 55a and 55b are driven by actuators 57a and 57b such as hydraulic cylinders so as to selectively rotate to either the first position P1 or the second position P2. When the support arms 55 a and 55 b are rotated to the first position P 1, the support arms 55 a and 55 b are hooked on the lower surface of the flange portion 33 of the support beam 32 a that forms the steady stop mechanism 30. Thereby, the steady rest mechanism 30 is held at the uppermost standby position L1 of the hoistway 2.

  According to the present embodiment, the drive units of the actuators 57 a and 57 b are electrically connected to the operation control unit 19 of the control device 18. The operation control unit 19 rotates the support arms 55a and 55b from the first position P1 to the second position P2 with respect to the drive units of the actuators 57a and 57b when long-period vibration is detected by the vibration control control unit 20. The signal to be sent is sent out.

  At the same time, the operation control unit 19 sends a signal for operating the motor 39 of the first to fourth guide devices 35a, 35b, 35c, and 35d as a generator to the motor 39.

  Next, the operation of the elevator 1 when long-period vibration is applied to the building will be described with reference to the flowchart shown in FIG.

  The vibration control controller 20 of the control device 18 determines whether or not long-period vibration has occurred in the building in step S1. In the present embodiment, the vibration control controller 20 determines whether or not the vibration detector 21 has detected a long-period vibration caused by, for example, an earthquake or a strong wind, based on the building acceleration output from the vibration detector 21. Determine whether.

  When the swing control unit 20 determines that the long-period vibration has occurred, the process proceeds to step S2 in which the elevator 1 is shifted from the normal operation to the long control operation. In step S <b> 2, the vibration control control unit 20 outputs a command for stopping the operation of the elevator 1 to the operation control unit 19. Further, the operation control unit 19 controls the hoisting machine 7 based on a command from the swing control control unit 20 so that the car 5 is stopped at the nearest floor and the hoisting machine 7 is stopped. To maintain.

  If the vibration control controller 20 determines that no long-period vibration has occurred, it repeats step S1 until the long-period vibration has occurred.

  Next, the vibration control controller 20 proceeds to step S3 for determining whether or not the shaking of the building based on the earthquake / strong wind has converged. When the vibration control control unit 20 determines that the shaking of the building has converged, the actuators 57a and 57b of the stopper mechanism 54 move the support arms 55a and 55b from the first position P1 to the second based on a command from the operation control unit 19. The motor 39 of the first to fourth guide devices 35a, 35b, 35c, and 35d operates as a generator.

  When the support arms 55a and 55b are rotated from the first position P1 to the second position P2, the holding of the steady stop mechanism 30 is released. As a result, the process proceeds to step S4 in which the steady rest mechanism 30 starts to descend from the standby position L1 toward the car 5 due to its own weight.

  In step S4, the shaking of the building has converged, but the main rope 8 that suspends the car 5 from the hoistway 2 continues to swing in the lateral direction of the hoistway 2. In particular, in the state where the car 5 is positioned below the intermediate portion along the height direction of the hoistway 2, the total length of the first portion 8 a of the main rope 8 increases, so the first rope 1 of the main rope 1 is increased. The swing width of the portion 8a is increased.

  When the holding of the steadying mechanism 30 is released in step S4, the steadying mechanism 30 descends along the first guide rails 3a and 3b due to its own weight. At this time, the outer peripheral surface of the first roller 38a of the first to fourth guide devices 35a, 35b, 35c, 35d is elastically pressed against the tip edge 3d of the blade 3c of the first guide rails 3a, 3b. Therefore, a rotational force is input from the first roller 38a to the motor 39, and the motor 39 operates as a generator.

  Therefore, a regenerative brake acts on the motor 39, and the steadying mechanism 30 slowly descends the hoistway 2 toward the car 5 with a braking force.

  When the steady rest mechanism 30 is lowered, the first portion 8a of the main rope 8 passes through the insertion holes 51 of the rope guides 50a and 50b. The rope guides 50 a and 50 b allow the main rope 8 to move along the height direction of the hoistway 2, but restrain the movement of the main rope 8 in the lateral direction of the hoistway 2.

  As a result, even if the first portion 8a of the main rope 8 that suspends the car 5 from the hoistway 2 is greatly swung in the lateral direction of the hoistway 2 due to the influence of an earthquake or strong wind, for example. The swing of the rope 8 is forcibly suppressed in the process in which the first portion 8a of the main rope 8 passes through the rope guides 50a and 50b.

  When the steady rest mechanism 30 arrives on the car 5, the process proceeds to step S5. In step S5, the operation control unit 19 supplies electric power from the battery 40 to the motor 39, and drives the first roller 38a in the direction opposite to that when the motor is lowered. Thus, the contact resistance generated between the first roller 38a and the first guide rails 3a and 3b starts to rise from the upper part of the steady stop mechanism 30 or the car 5 toward the standby position L1.

  Even in the process in which the steady rest mechanism 30 is raised, the movement of the main rope 8 in the lateral direction of the hoistway 2 is suppressed because the first portion 8a of the main rope 8 passes through the insertion holes 51 of the rope guides 50a and 50b. Is done.

  When the steady rest mechanism 30 arrives at the standby position L1, the actuators 57a and 57b of the stopper mechanism 54 rotate the support arms 55a and 55b from the second position P2 to the first position P1. By this rotation, the support arms 55a and 55b are hooked on the lower surface of the flange portion 33 of the support beam 32a, and the steadying mechanism 30 is held at the standby position L1.

  When the steady rest mechanism 30 is held at the standby position L1, the process proceeds to step S7. In step S7, the operation control unit 19 releases the long control operation of the elevator 1 and resumes the normal operation.

  According to the first embodiment, when the elevator 1 stopped in the long control operation enters the restoration stage, the steady rest mechanism 30 held at the uppermost part of the hoistway 2 is attached to the first guide rails 3a and 3b. Descent along. As a result, since the main rope 8 continuously swinging in the hoistway 2 passes through the insertion holes 51 of the rope guides 50a and 50b even after the shaking of the building is converged, the hoistway is passed by the rope guides 50a and 50b. 2 is restrained from swinging the main rope 8 in the lateral direction.

  For this reason, the swing of the main rope 8 in the hoistway 2 can be quickly converged, and the elevator 1 that is not operating can be returned to normal operation as soon as possible. Therefore, it is possible to shorten the time from when the elevator 1 stops operation until it resumes operation.

  In the first embodiment, the steady rest mechanism 30 includes a pair of rope guides 50a and 50b, but the number of the rope guides 50a and 50b is not particularly limited. For example, a single rope guide through which the main rope 8 passes may be fixed between the support beams 32 a and 32 b of the frame 31.

  Furthermore, the configuration of the stopper mechanism 54 that holds the steady rest mechanism 30 at the standby position L1 is not specified in the first embodiment. For example, between the first position P1 where the support arms 55a and 55b project horizontally between the first guide rails 3a and 3b, and the second position P2 that retreats from between the first guide rails 3a and 3b. It is also possible to reciprocate linearly in the horizontal direction.

  In addition, the steady stop mechanism 30 is not limited to suppressing the swing of the main rope 8, and the steady stop mechanism 30 may be used to suppress the swing of the compensating rope 23.

  In this case, the steady rest mechanism 30 stands by in the pit at the lower end of the hoistway 2, and ascends along the first guide rails 3a and 3b when the operation of the elevator 1 is stopped. As a result, the rope guides 50a and 50b of the steadying mechanism 30 are raised along the compensating rope 23, and the deflection of the compensating rope 23 in the lateral direction of the hoistway 2 is suppressed.

  At the same time, the steadying mechanism 30 may be moved up and down along the second guide rails 4a and 4b. In this way, the second portion 8b of the main rope 8 that suspends the counterweight 6 on the hoistway 2, or the compensator that hangs down from the lower end of the counterweight 6 toward the pit of the hoistway 2 is achieved. The swing of the ting rope 23 can be suppressed.

  Furthermore, in the first embodiment, a braking force is applied to the first roller 38a using a regenerative brake when the motor 39 is operated as a generator. For example, the shoe material is applied to the first roller 38a. An electromagnetic brake that obtains a braking force by the magnetization of a friction brake or magnetic fluid may be provided.

[Second Embodiment]
9 to 11 disclose a second embodiment. The second embodiment is different from the first embodiment in the configuration of four guide devices that guide the steady rest mechanism 30 along the first guide rails 3a and 3b. The four guide devices are distributed and arranged at the four corners of the frame 31 of the steady rest mechanism 30 as in the first embodiment.

  FIG. 9 shows the first guide device 60 attached to the upper surface of the left end portion of the frame 31 so as to correspond to the first guide rail 3a. The first guide rail 3a is made of iron which is a ferromagnetic material. The first guide device 60 includes a pedestal 61 and an E-shaped magnet unit 62 supported by the pedestal 61.

  The pedestal 61 is made of a nonmagnetic material such as aluminum, stainless steel, or plastic, and is fixed to the upper surface of the left end portion of the frame 31. In the present embodiment, the width direction of the hoistway 2 is defined as the X direction, the depth direction of the hoistway 2 is defined as the Y direction, and the height direction of the hoistway 2 is defined as the Z direction. Therefore, as shown in FIG. 11, the side surfaces 3e and 3f of the first guide rail 3a are vertical surfaces orthogonal to the Y direction, and the tip edge 3d of the first guide rail 3a is orthogonal to the X direction. It is a vertical surface.

  As shown in FIGS. 10 and 11, the magnet unit 62 includes first to fourth electromagnets 63a, 63b, 63c, and 63d, and first and second permanent magnets 64a and 64b.

  The first electromagnet 63a has a first magnetic pole 65a at the end facing the other side surface 3f of the first guide rail 3a. The second electromagnet 63b has a second magnetic pole 65b at the end facing the one side surface 3e of the first guide rail 3a. The third electromagnet 63c and the fourth electromagnet 63d cooperate with each other to form a central electromagnet 66. The central electromagnet 66 extends toward the tip edge 3d of the first guide rail 3a, and has a third magnetic pole 65c at the end facing the tip edge 3d.

  Further, coils 67a, 67b, 67c, and 67d are wound around the first to fourth electromagnets 63a, 63b, 63c, and 63d, respectively.

  The first permanent magnet 64 a connects the first electromagnet 63 a and the central electromagnet 66. The second permanent magnet 64 b connects the second electromagnet 63 b and the central electromagnet 66. According to the present embodiment, the central electromagnet 66 connects the same poles of the first permanent magnet 64a and the second permanent magnet 64b.

  In such a magnet unit 62, the direction of the magnetic lines passing through the first magnetic pole 65a and the second magnetic pole 65b facing each other with the blade 3c of the first guide rail 3a interposed therebetween, and the first edge 3d facing the tip edge 3d of the blade 3c. The direction of the magnetic field lines passing through the three magnetic poles 65c are substantially orthogonal to each other. Further, there are gaps between the first to third magnetic poles 65a, 65b, 65c and the side surfaces 3e, 3f and the tip edge 3d of the first guide rail 3a.

Therefore, the magnet unit that tries to attract the first guide rail 3a by controlling the excitation current supplied to the first to fourth electromagnets 63a, 63b, 63c, 63d by the operation control unit 19 of the control device 18. The magnetic force of 62 can be changed. Specifically,
(1) When the exciting current to the first to fourth electromagnets 63a, 63b, 63c, 63d is supplied so that the magnetic flux of the first and second permanent magnets 64a, 64b increases,
Regarding the Y direction, the magnetic force between the first magnetic pole 65a and the side surface 3f of the first guide rail 3a and the magnetic force between the second magnetic pole 65b and the side surface 3e of the first guide rail 3a are substantially the same. To increase. Therefore, the increment of the magnetic force in the Y direction is canceled out, and the magnetic force of the magnet unit 62 hardly changes.

  With respect to the X direction, the magnetic flux passing between the third magnetic pole 65c and the tip edge 3d of the first guide rail 3a increases, so the magnetic force of the magnet unit 62 increases.

(2) When the exciting current to the first to fourth electromagnets 63a, 63b, 63c, 63d is supplied so that the magnetic flux of the first and second permanent magnets 64a, 64b is reduced,
Regarding the Y direction, the magnetic force between the first magnetic pole 65a and the side surface 3f of the first guide rail 3a and the magnetic force between the second magnetic pole 65b and the side surface 3e of the first guide rail 3a are substantially the same. To decrease. Therefore, the decrease in the magnetic force in the Y direction is canceled out, and the magnetic force of the magnet unit 62 hardly changes.

  With respect to the X direction, the magnetic flux passing between the third magnetic pole 65c and the tip edge 3d of the first guide rail 3a is reduced, so that the magnetic force of the magnet unit 62 is reduced.

(3) The exciting current to the first and third electromagnets 63a and 63c is supplied so that the magnetic flux of the first permanent magnet 64a is increased, and the exciting current to the second and fourth electromagnets 63d is When the magnetic flux of the second permanent magnet 64b is supplied to decrease,
Regarding the Y direction, the magnetic flux increases on the first magnetic pole 65a side, and the magnetic flux decreases on the second magnetic pole 65b side. For this reason, a difference occurs in the magnetic force of the magnet unit 62 between the side surface 3e side and the side surface 3f side of the first guide rail 3a, and the magnet unit 62 is attracted to the side surface 3f of the first guide rail 3a.

  Regarding the X direction, the change in the magnetic flux passing through the third magnetic pole 65c is canceled out, and the magnetic force of the magnet unit 62 hardly changes.

  (4) Supply exciting current to the first and third electromagnets 63a and 63c so that the magnetic flux of the first permanent magnet 64a is reduced, and exciting current to the second and fourth electromagnets 63b and 63d. When the magnetic flux of the second permanent magnet 64b is supplied so as to increase, the magnetic force of the magnet unit 62 hardly changes in the X direction, but there is a difference in the magnetic force of the magnet unit 62 in the Y direction. For this reason, the magnet unit 62 is attracted | sucked by the side surface 3e of the 1st guide rail 3a conversely.

  As described above, by controlling the excitation current for the first to fourth electromagnets 63a, 63b, 63c, and 63d by the operation control unit 19, the X and Y directions of the magnet unit 62 with respect to the first guide rail 3a are controlled. The magnetic force can be changed individually.

  Therefore, when the holding of the steady stop mechanism 30 with respect to the hoistway 2 is released, if the magnetic force in the X direction and the Y direction of the magnet unit 62 is individually changed according to a command from the operation control unit 19, the steady rest is achieved. The mechanism 30 descends along the first guide rails 3a and 3b by its own weight.

  Therefore, as in the first embodiment, the movement of the main rope 8 in the lateral direction of the hoistway 2 can be restricted by the steadying mechanism 30 that descends.

  In the second embodiment, the steadying mechanism 30 is lowered along the first guide rails 3 a and 3 b by changing the magnetic force of the magnet unit 62. For this reason, it is possible to stop the steadying mechanism 30 at an arbitrary position in the hoistway 2 by increasing the magnetic force of the magnet unit 62 during the descent.

  By stopping the steadying mechanism 30 in the middle of the hoistway 2, it is possible to prevent the deflection acting on the main rope 8 from growing.

  On the other hand, when the magnetic force of the magnet unit 62 is changed, the steadying mechanism 30 can be lowered along the first guide rails 3a and 3b, but the steadying mechanism 30 is moved to the first guide rails 3a and 3b. It cannot be raised along.

  Therefore, in the second embodiment, after the steady-rest mechanism 30 is lowered to a position where the steady-rest mechanism 30 is in contact with the upper surface of the car 5, the car-rest mechanism 30 is lifted by the hoisting machine 7 to raise the car-rest mechanism 30. It is desirable to push up toward the upper part of the hoistway 2.

  The standby position L <b> 1 where the steady rest mechanism 30 is held is located above the top floor stop position of the car 5. For this reason, even if the car 5 reaches the top floor stop position, the steady rest mechanism 30 may not reach the standby position L1.

  As a countermeasure, for example, a push-up mechanism using a hydraulic cylinder or an air cylinder that receives the frame 31 of the steadying mechanism 30 may be installed on the upper beam 13 of the car 5. The push-up mechanism pushes up the steadying mechanism 30 toward the standby position L1 when the car 5 reaches the top floor stop position.

  When the steady rest mechanism 30 reaches the standby position L1, as in the first embodiment, the support arms 55a and 55b of the stopper mechanism 54 are rotated from the second position P2 to the first position P1, thereby supporting arm. 55a and 55b are hooked on the lower surface of the flange portion 33 of the support beam 32a. Accordingly, the steady rest mechanism 30 can be held at the standby position L1.

  In the second embodiment, it is assumed that the steady rest mechanism 30 is pushed up to the standby position L1 via a dedicated push-up mechanism, but this is not specific. For example, after the car 5 reaches the top floor stop position, the hoisting machine 7 is further driven in the direction to wind up the main rope 8 so that the steadying mechanism 30 is pushed up to the standby position L1 by the car 5. Also good.

  However, since the car 5 rises to a position past the top floor stop position, the amount of lowering of the counterweight 6 increases accordingly. For this reason, it is necessary to take measures such as deepening the pit of the hoistway 2.

  Furthermore, as a developed form of the second embodiment, for example, the steadying mechanism 30 may be driven by a linear motor. As an example, it is conceivable that reaction plates are arranged in a straight line along the vertical direction in the hoistway 2 and an electromagnet that faces the reaction plate is provided on the frame 31 of the steadying mechanism 30.

  In addition, in the second embodiment, the steadying mechanism 30 is lowered along the first guide rails 3a and 3b by changing the magnetic force of the magnet unit 62, but friction is used instead of the magnet unit. A unit may be used.

  The friction unit includes a shoe material that slidably contacts the blade 3c of the first guide rails 3a and 3b, and an elastic body that presses the shoe material toward the blade 3c of the first guide rails 3a and 3b. ing. By changing the pressing force of the shoe material by the elastic body, the steadying mechanism 30 is lowered along the first guide rails 3a and 3b, or the steadying mechanism 30 is stopped at an arbitrary position in the hoistway 2. It becomes possible to make it. Therefore, the same effect as the second embodiment can be obtained.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  2 ... hoistway, 3a, 3b, 4a, 4b ... guide rail (first guide rail, second guide rail), 5, 6 ... elevating body (cage, counterweight), 8, 23 ... rope ( Main rope, compensating rope), 30 ... rest mechanism.

Claims (10)

A hoistway having a pair of guide rails extending vertically so as to face each other;
An elevating body that is moved up and down the hoistway along the guide rail;
A rope coupled to the lifting body and hanging along the hoistway;
By being supported by the guide rail so as to be movable up and down between the guide rails, and when the lifting body is stopped, the self-propelled in the height direction of the hoistway while in contact with the rope An anti-sway mechanism for restraining the rope from swinging in the lateral direction of the hoistway;
Elevator equipped with. The steady rest mechanism is
A frame straddling between the guide rails;
A rope guide provided in the frame and formed with a through-hole through which the rope passes;
A plurality of guide devices that are provided at both ends of the frame and guide the frame along the guide rail;
The guide device includes a plurality of rollers that are in rolling contact with the guide rail from three directions, and a motor that moves the frame up and down along the guide rail by driving at least one of the rollers. The elevator according to claim 1.   The elevator according to claim 2, further comprising an elastic body that elastically biases the roller driven by the motor toward the guide rail.   The elevator according to claim 2 or 3, wherein the lifting body is a passenger car, and the rope is a main rope that suspends the passenger car from the hoistway.   The elevator according to claim 4, further comprising a stopper mechanism that holds the steady stop mechanism at a standby position defined above a stop position on the uppermost floor of the car. Detecting means for detecting long-period vibration acting on the hoistway;
A control device for releasing the holding of the steady stop mechanism by the stopper mechanism and operating the motor of the guide device when the detection means detects the long-period vibration;
The elevator according to claim 5, further comprising:   The elevator according to claim 6, wherein the motor is operated as a regenerative brake when the steadying mechanism descends the hoistway from the standby position.   The elevator according to claim 4 or 5, wherein the steadying mechanism is pushed up to the standby position by the car by raising the car along the hoistway. The guide rail is formed of a magnetic material,
The steady rest mechanism is
A frame straddling between the guide rails;
A rope guide provided in the frame and formed with a through-hole through which the rope passes;
A plurality of guide devices that are provided at both ends of the frame and support the frame with a magnetic force with respect to the guide rail;
The guide device includes a magnet unit having a plurality of electromagnets having magnetic poles opposed to the guide rail from three directions, and a pair of permanent magnets connected between the electromagnets, and a current flowing through the electromagnet The elevator according to claim 1, wherein the frame is moved along the guide rail by changing the magnetic force by controlling the motor.   The said raising / lowering body is a cage and a counterweight, The said rope is a compensating rope spanned between the bottom part of the said cage and the lower end part of the said counterweight. Elevator.

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