JP2018154496A - Rope runout suppression unit and elevator having the rope runout suppression unit - Google Patents

Abstract

An object of the present invention is to provide a rope runout suppressing unit for an elevator, in which a steady rest bar is less likely to be damaged than before. The actuator includes an actuator including an output shaft, a torque limiter, a steady bar connected to the output shaft via the torque limiter, and a backup member. The backup member 116 is rotated by the actuator 108 to be switched between an upright standby state and an operation state lying on the side of the target rope portion 24A to be steady. In addition, the load caused by the collision of the target rope portion 24A that oscillates against the anti-sway bar 102 is supported together with the actuator 108. When an over-torque is generated around the transmission shaft, transmission of the over-torque to the output shaft is shut off. [Selection diagram] FIG.

Description

  The present invention relates to a rope runout suppression unit and an elevator having the rope runout suppression unit, and in particular, suppresses runout of a main rope and a balance rope that are caused by a building in which the elevator is shaken due to an earthquake or the like. It relates to a rope runout suppression unit.

  In recent years, as the number of buildings rises, in rope-type elevators, the swing of the main rope accompanying the shaking of the building due to an earthquake or strong wind has become a problem.

  Many rope elevators installed in high-rise buildings are provided with a machine room above the uppermost part of a car hoistway, and a hoisting machine for driving the car is installed in the machine room. A main rope is hung on the sheaves constituting the hoisting machine, and a car is connected to one end of the main rope and a counterweight is connected to the other end, and each is suspended by the main rope. ing. Then, the car guided by a pair of car guide rails laid in the vertical direction is moved up and down by rotating the sheave forward or backward by a prime mover.

  In an elevator with such a configuration, for example, when a building shakes due to long-period ground motion, the main rope hanging the car from the top of the building swings in the horizontal direction in the same direction as the shaking of the building (hereinafter, this horizontal The direction rope runout is referred to as “lateral runout”).

  When a shake due to an earthquake is detected, for example, the car is moved up and down to a predetermined evacuation floor, and the car is stopped on the evacuation floor, and then the operation is resumed after the lateral swing of the main rope is sufficiently attenuated. I am doing so.

  However, since the frequency of long-period ground motion is often close to the natural frequency of a high-rise building, the building shakes greatly, which increases the amplitude of the main rope's lateral vibration. Lateral vibrations do not converge easily, and it takes a lot of time to resume operation.

  On the other hand, Patent Document 1 discloses a rope runout suppressing device that suppresses lateral runout of a main rope portion that suspends a car.

  The rope shake suppression device described in Patent Literature 1 is configured to include two rope shake suppression units. Each of the rope runout suppression units has a steady bar that is slightly longer than the distance between the pair of car guide rails. A weight is provided at one end of the steady bar, and one end near the weight is rotated by a driving device attached to one guide rail via a steady bar mounting arm. Yes. Patent Document 1 states that “the steady bar is normally held upright away from the main rope, and when the elevator that detects an earthquake or strong wind stops, it is rotated horizontally by the drive device. (Patent Document 1 [Claim 1]). The other end of the steady bar rotated to the horizontal state is received by a Y-shaped stopper attached to the other guide rail via a burst top mounting arm.

  When the main rope swings toward the steady bar in a horizontal state, the main rope comes into contact with the steady bar and further shake is suppressed.

JP 2014-227291 A

  In the conventional rope runout suppressing unit, the steady bar that is in a horizontal state after the elevator is stopped is in a state of crossing between the pair of guide rails. That is, it is in a state where it has entered into the elevator path of the car that moves up and down between the pair of guide rails.

  Prior to resuming operation of the elevator, the steady bar needs to be returned to the standing state, but it may be said that there is no case in which the steady bar enters the hoistway due to a malfunction of the drive device or the like. .

  In this case, when the operation is resumed and the car moves up and down, the car collides with the steady bar. When the car descends and collides, the other end of the steady bar is received by the stopper, and the steady bar cannot be rotated downward and is damaged.

  In order to hold the steady bar provided with a weight at one end in a horizontal state, it is considered that downward rotational power is applied to the steady bar by the driving device. Therefore, even when the car rises and collides with the steady bar in such a state, the steady bar is damaged.

  In view of the problems described above, a first object of the present invention is to provide a rope runout suppression unit in which the steady bar is less likely to break than the conventional rope runout suppression unit.

  The second object of the present invention is to provide an elevator having such a rope runout suppression unit.

  In order to achieve the first object, the rope run-out suppressing unit according to the present invention includes a car and a counterweight suspended from a main rope in a hanging manner, and between the car and the counterweight. A rope runout suppression unit for an elevator, in which a balancing rope with a balancing wheel hung at the lowermost end is suspended, and the car and the balancing weight are raised and lowered in the opposite direction, including an output shaft An actuator installed outside the car and the counterweight lifting path, a torque limiter, a steady bar connected to the output shaft via the torque limiter, and a backup member, The steady bar is rotated by the actuator to stand upright, and the main rope portion and the balance rope which are the portions of the main rope that suspend the cage. A cage-side rope portion that is one of a cage-side balancing rope portion that is a portion between the cage and the balancing vehicle, and a balancing-weight side that suspends the balancing weight in the main rope In the main rope portion and the balance rope, the steady rest in the balance weight side rope portion which is one of the balance weight side balance rope portions which are the portions between the balance weight and the balance wheel. Switching to the operating state lying on the side of the target rope portion of interest, the backup member being on the side of the steady bar opposite to the target rope portion in the operating state, The load due to the collision of the target rope portion against the steady bar together with the actuator is supported, and the torque limiter is moved up and down on the steady bar in the operating state. When an excessive torque exceeding the torque required for the actuator to rotate the steady bar is generated around the axis of the output shaft due to an external force acting in the direction, the excessive torque applied to the output shaft It is characterized by blocking transmission.

  The rope swing suppression unit is installed so that a part of the steady bar in the operating state enters the elevator path of the cage and lies on the side of the cage rope portion. The steady bar has a protruding portion protruding upward and a protruding portion protruding downward in the end portion on the opposite side of the actuator in the entry portion to the lifting path in the operating state. It is characterized by that.

  In order to achieve the second object, an elevator according to the present invention includes a car, a counterweight, a main rope that suspends the car and the counterweight in a hanging manner, and the car and the counterweight. A balance rope suspended between the balance rope, a balance wheel hung on the lowermost end of the balance rope, and the rope runout suppression unit, wherein the rope runout suppression unit is A steady bar is installed so that a part of it enters the elevator path of the car and lies on the side of the rope part of the car, and the upper part of the car is in the operating state in a plan view. Of the first overlapping region that overlaps with the steady bar, the first end region far from the actuator protrudes upward from the first overlapping region other than the first end region. 1 protrusion is provided The second end region in the second end region farther from the actuator in the second overlap region overlapping the steady bar in the activated state in the bottom view of the bottom of the car A second projecting portion projecting downward from the second overlapping region portion other than is provided.

  According to the rope swing suppression unit according to the present invention, the steady bar that is rotated by the actuator and is switched between the standing standby state and the operation state lying on the side of the target rope part to be steady is the actuator. The torque limiter is connected to the output shaft via a torque limiter, and the torque limiter has an external force acting in the vertical direction on the steady bar in the operating state, and the actuator is arranged around the axis of the output shaft. When an excessive torque exceeding the torque required to rotate the steady bar is generated, the transmission of the excessive torque to the output shaft is interrupted. In addition, the backup member supports the load caused by the collision of the target rope portion that laterally swings against the steady bar from the side of the steady bar opposite to the target rope.

  As a result, even if the elevator is operated in the operating state and the elevator car or the counterweight collides with the steady bar, the torque limiter of the torque limiter is applied to the actuator (output shaft thereof). Due to the action, the steady bar rotates idly, and the impact received by the steady bar from the car and the counterweight is reduced. As a result, breakage of the steady bar is prevented as much as possible. Further, since the backup member supports the steady bar from the side (that is, the up and down direction of the steady bar is open), it does not inhibit the idling.

  According to the elevator according to the present invention, the rope runout suppressing unit having the above-described configuration is configured such that a part of the steadying bar in the operating state enters the lift path of the car, and the side of the rope side of the car side Therefore, even if the elevator is operated and the elevator car collides with the steady bar while the steady bar remains in the operating state, the steady bar An effect similar to the above can be obtained in which damage is prevented as much as possible.

  In addition, since the first protrusion and the second protrusion described above are provided on the top and the bottom of the car, respectively, the car will collide with an end portion near the actuator in the steady bar. In this case, it is possible to prevent bending of the steady bar due to delay of the action of the torque limiter as much as possible.

  That is, in the unlikely event that the elevator is operated while the operation state is maintained, and the car that moves up and down approaches the steady bar, first, the first projecting part or the second projecting part comes into contact with the steady bar. Applying downward or upward external force to the steady bar. The first or second projecting portion on which the external force is applied is an end on the side farther from the actuator in an overlapping region overlapping the steady bar in the activated state in a plan view or a bottom view in the upper or lower portion of the car. It is provided in the partial area.

  For this reason, the torque generated around the output shaft by the external force is such that the end region close to the actuator in the overlapping region first contacts (collises) with the steady bar. It becomes larger than the torque generated around. As a result, the torque limiter is easily actuated, so that the bending of the steady bar can be prevented as much as possible.

It is a figure which shows schematic structure of the elevator which has a rope runout suppression apparatus containing the rope runout suppression unit which concerns on Embodiment 1. FIG. It is a figure which shows an example of how to hang various ropes (roping) in the elevator. It is a conceptual diagram for demonstrating an example of the arrangement | sequence of the several rope which comprises a main rope. (A) is a top view which shows schematic structure of the said rope runout suppression apparatus, (b) is an exploded perspective view of a steady bar, (c) has shown the AA line expanded sectional view in (a), respectively. . (A) is a plan view of an actuator for rotating the steady bar and the vicinity thereof, and (b) is a plan view of the actuator and a torque limiter for connecting a base end portion of the steady bar to the actuator. is there. (A) is the figure which looked at the stand-by state of the steady bar when the elevator is normally drive | operating from the horizontal direction along the hoistway wall surface where the said steady bar was installed, (b) (c) These are the figures which looked at the standby state from the direction perpendicular | vertical to the said hoistway wall surface. (A) is the top view of the backup member provided in the hoistway and its vicinity, (b) saw the said backup member from the horizontal direction along the hoistway wall surface where the said backup member was provided It is a side view. It is a figure which shows the one part schematic structure of the elevator which has a rope runout suppression unit which concerns on Embodiment 2. FIG. It is a top view of the elevator which has a rope runout suppression unit which concerns on Embodiment 2. FIG. It is a figure which shows the one part schematic structure of the elevator which has a rope runout suppression unit which concerns on Embodiment 1. FIG. It is a top view of the elevator which has a rope runout suppression unit which concerns on Embodiment 1. FIG.

Hereinafter, embodiments of a rope runout suppressing unit according to the present invention will be described with reference to the drawings.
<Embodiment 1>
FIG. 1 is a front view of a hoistway 12 in which an elevator 10 having rope runout suppression devices I, II, and III including a rope runout suppression unit according to Embodiment 1 is viewed from a landing (not shown) side. FIG. 2 is a right side view of the elevator 10. In addition, since FIG. 1 and FIG. 2 are the main objectives about the installation position in the up-down direction regarding the rope shake suppression apparatuses I, II, and III, the configuration of the rope shake suppression apparatuses I, II, and III Most of the elements are omitted.

  As shown in FIGS. 1 and 2, the elevator 10 is a rope-type elevator that employs a traction system as a driving system. A machine room 16 is provided in a building 14 portion above the uppermost part of the hoistway 12. In the machine room 16, a hoisting machine 18 and a deflecting wheel 20 are installed. A main rope 24 composed of a plurality of ropes is wound around the sheave 22 and the deflecting wheel 20 constituting the hoisting machine 18 (in FIG. 1, the plurality of ropes are described with an accurate number). Not.)

  A car 26 is connected to one end of the main rope 24, and a counterweight 28 is connected to the other end, and the car 26 and the counterweight 28 are suspended by the main rope 24 in a hanging manner. Yes.

  A balancing rope 32 comprising a plurality of ropes with a balancing wheel 30 hung on the lowermost end is suspended between the car 26 and the balancing weight 28. In this example, the number of the plurality of ropes constituting the main rope 24 and the number of the plurality of ropes constituting the balancing rope 32 is the same number (eight in this example).

  In the hoistway 12, a pair of car guide rails 34, 36 and a pair of counterweight guide rails 38, 40 are laid in the vertical direction (both not shown in FIGS. 1 and 2). (See FIG. 4 (a)).

  In the elevator 10 having the above configuration, when the sheave 22 is rotated forward or reversely by a hoist motor (not shown), the main rope 24 wound around the sheave 22 travels and is suspended by the main rope 24. The cage 26 and the counterweight 28 are raised and lowered in opposite directions. Along with this, the balancing rope 32 suspended between the car 26 and the balancing weight 28 travels back in the balancing wheel 30.

  Here, as shown in FIG. 2, in the main rope 24, a portion where the car 26 is suspended is referred to as a car-side main rope portion 24 </ b> A, and a portion where the counterweight 28 is suspended is referred to as a counterweight-side main rope portion 24 </ b> B. I will do it. In the balancing rope 32, the portion suspended from the car 26 (the balancing rope 32 portion between the cage 26 and the balancing vehicle 30) is referred to as a cage-side balancing rope portion 32 A, and is suspended from the balancing weight 28. The portion (the balance rope 32 portion between the balance weight 28 and the balance wheel 30) will be referred to as a balance weight side balance rope portion 32B. According to the above definition, the length (range) of the car-side main rope portion 24A and the counterweight-side main rope portion 24B occupying the main rope 24, and the car-side balance rope portion 32A occupying the balance rope 32 The length (range) of the counterweight-side counterbalance rope portion 32 </ b> B expands and contracts (fluctuates) depending on the lift position of the car 26 and the counterweight 28.

  An arrangement of a plurality (eight in this example) of ropes M1 to M8 constituting the main rope 24 will be described with reference to FIG. FIG. 3 is a conceptual diagram showing the main rope 24 portion between the sheave 22 and the car 26, that is, the car-side main rope portion 24A.

  3A is a view of the sheave 22 and a part of the car side main rope portion 24A as viewed from the front, and the lower view of FIG. 3A is a view of the car 26 as viewed from the top. is there. The lower diagram of FIG. 3A is a diagram illustrating a correspondence relationship between the connection positions of the ropes M1 to M8 constituting the main rope 24 with respect to the car 26 in a plan view and the ropes M1 to M8. FIG. 3B is a view of the sheave 22, the car side main rope portion 24A, and a part of the car 26 as seen from the left side.

  As shown in the upper diagram of FIG. 3A, the eight ropes M1 to M8 are wound around the sheave 22 in this order in the horizontal direction (axial direction of the sheave 22) at equal intervals. . The lower ends of the ropes M1 to M8 are divided into two rows by the odd-numbered ropes M1, M3, M5 and M7 and the even-numbered ropes M2, M4, M6 and M8 as shown in the lower diagram of FIG. And connected to the car 26.

  In this way, the two rows are distributed in one row because of the influence of the size (outer diameter) of the stopper (shackle rod) that connects the ends of the ropes M1 to M8 to the car 26. This is because the distance between the ropes M <b> 1 to M <b> 8 is larger and there is a problem in effectively using the limited space above the car 26.

  The distance between the ropes M1, M3, M5, and M7 at the connection position to the car 26 and the distance between the ropes M2, M4, M6, and M8 are also equal, and the horizontal distance between the ropes M1 to M8 is also equal. Therefore, the horizontal direction of the ropes M1, M3, M5, M7, the ropes M2, M4, M6, M8 and the ropes M1 to M8 of the main rope 24 portion (the car side main rope portion 24A) from the sheave 22 to the car 26 The interval is an equal interval at any of the upper and lower positions.

  The arrangement of the ropes M1 to M8 in the counterweight main rope portion 24B is basically the same as that of the car side main rope portion 24A. Further, with respect to the balancing rope 32, the car-side balancing rope portion 32A only differs depending on whether the turn-back position is the sheave 22 or the balancing wheel 30 (that is, the up and down directions are opposite). The arrangement of the plurality of ropes in the counterweight side balance rope portion 32B is basically the same as that of the car side main rope portion 24A and the counterweight side main rope portion 24B, respectively.

  When the building 14 in which the elevator 10 having the above-described configuration is installed is a high-rise building, and the lifting stroke of the elevator 10 exceeds 100 m, for example, the main thing that is generated when the building 14 is shaken by a long-period earthquake or strong wind. The lateral runout of the rope 24 and the balancing rope 32 needs to be suppressed for the reasons described above.

  For this reason, as shown in FIGS. 1 and 2, the elevator 10 includes rope runout suppression devices I, II, and III at three locations in the hoistway 12 in the vertical direction. The installation positions of the rope runout suppression apparatuses I, II, and III will be described with reference to FIG.

  A reference position S is a lower end of the main rope 24 when the car 26 is landed on the first floor of the building 14 (a connection position to the car 26 by the stopper). At this time, the distance between the reference position S and the sheave 22 (the axis thereof) is D (D is the car side when the car 16 is landing on the first floor of the building 14). It is also the substantially total length of the main rope portion 24A).

  The rope runout suppression device I is installed around the reference position S where the height H1 = (1/4) · D. The rope runout suppression device II is installed around the reference position S where the height H2 = (1/2) · D. The rope runout suppression device III is installed in the vicinity of the height H3 = (3/4) · D from the reference position S.

  The reason for installing at the heights of H1, H2, and H3 is as follows. When the car 26 is landing on the first floor of the building 14, the length of the car side main rope portion 24 </ b> A (the counterweight side balancing rope portion 32 </ b> B) is closest to the height of the building 14. The car-side main rope portion 24A (the counterweight-side balance rope portion 32B) is likely to roll sideways in synchronism with the rolling of the car.

  In this case, when the building 14 rolls in the primary mode, the car side main rope portion 24A and the counterweight side balance rope portion 32B also roll in the primary mode, and the vibration antinode (that is, the portion where the amplitude is maximum). ) Appears at approximately H2. When the building 14 rolls in the secondary mode, the car side main rope portion 24A and the counterweight side balancing rope portion 32B also roll in the secondary mode, and the vibration node (that is, the portion where the amplitude is minimized) An antinode of vibration appears at about H2 and an antinode of vibration appears at about H1 and H3. Further, even when the building 14 rolls in the primary mode, the tension applied to the balancing rope 32 is relatively small, so that the counterweight side balancing rope portion 32B may swing in the secondary mode. is there.

  Therefore, when the above-mentioned maximum lateral vibration is increased, the rope vibration suppression devices I, II, and III are installed at positions where vibration antinodes may occur, and the lateral vibration is effectively suppressed. is there.

  However, depending on the position of the car 26 (landing floor), the main rope 24 part (car side main rope part 24A, fishing) appearing at the installation position (height H1, H2, H3) of the rope runout suppression devices I, II, III. The counterweight-side main rope portion 24B) and the balancing rope 32 portion (the car-side balancing rope portion 32A, the counterweight-side balancing rope portion 32B) vary.

Table 1 summarizes the correspondence between the position of the car 26 and the rope portions that appear at each of the heights H1, H2, and H3.

In Table 1, each of the symbols A, B, C, and D indicates the following car position.
A: When the car 26 is lower than the height H1 B: When the car 26 is between the height H1 and the height H2 C: When the car 26 is between the height H2 and the height H3 D: When the car 26 is higher than the height H3

    In Table 1, “◯” is written in the rope portion appearing at each installation position (H1 to H3) corresponding to the car position (A to D).

  Since all of the rope shake suppression devices I, II, and III have the same configuration, the rope shake suppression device III will be described as a representative, and detailed description of the rope shake suppression devices I and II will be omitted.

  FIG. 4A shows a state where the car 26 is stopped at the position “C” or “B” in Table 1. That is, the car-side main rope portion 24A and the counterweight-side main rope portion 24B are in a state in which the rope run-out suppressing device III is subject to steadying. In FIG. 4A, the following description will be made by taking the X axis in the front direction of the car 26 and the Y axis in the depth direction.

  As shown in FIG. 4A, the rope shake suppression device III includes four rope shake suppression units 100, 200, 300, and 400.

  In the rope runout suppression units 100, 200, 300, and 400, the same reference numerals are given to the last two digits that basically indicate the same components, and the details thereof are described in any of the rope runout suppression units 100, 200, 300, and 400. The description will be made with reference to 200, 300, 400, and the description with respect to the other rope runout suppression units 100, 200, 300, 400 will be omitted. The same applies to the reference numerals attached to members for installing the rope runout suppression units 100, 200, 300, 400 in the hoistway 12.

  The rope runout suppression unit 100 has a steady bar 102. The steady bar 102 includes a main body 104 and a buffer member 106. The main body 104 is made of metal (for example, stainless steel or aluminum), and for example, a square pipe is used. The buffer member 106 is made of an elastic body such as urethane rubber or silicone rubber.

  The buffer member 106 has a band shape, one main surface is formed in a flat surface, and the other main surface is formed in an uneven shape (in this example, a sine wave shape) continuous in the length direction. The reason for such an uneven shape will be described later. The “sine wave shape” used here does not mean a shape that strictly follows a sine function, but simply means a wave shape in which a smoothly changing peak (convex) and valley (concave) continue. Yes.

  The buffer member 106 is fixed (attached) to the main body 104 with the flat surface bonded to one side surface of the main body 104 with an adhesive (not shown). The attachment of the buffer member 106 to the main body 104 is not limited to adhesion, and screws may be used.

The steady bar 102 is rotated by an actuator 108 that generates rotational power.
As shown in FIG. 5A, the actuator 108 is connected to the base end portion of the steady bar 102.

  A bracket 114 is fixed to the hoistway wall 42, and an actuator 108 is attached to the bracket 114. Here, as shown in FIG. 4A, the hoistway 12 is a space surrounded by four hoistway walls 42 in this example, and the four hoistway walls 42 need to be distinguished. Is a letter “42” with alphabets A, B, C, and D. The actuator 108 is installed outside the lifting / lowering path of the counterweight 28 and the car 26.

  Returning to FIG. 5, the actuator 108 is a so-called spring return type known actuator. That is, when electric power is applied to the built-in motor (not shown) (that is, when the power is turned on), the output shaft 108A is rotated at a predetermined angle (90 in this example) while the built-in spring (not shown) is deformed by the power of the built-in motor. When the power is turned off, the output shaft 108A returns (returns) to the original angle by the predetermined angle by the restoring force of the built-in spring.

  The steady bar 102 is connected to the output shaft 108A via the torque limiter 110. The torque limiter 110 is a so-called flange type known torque limiter. In the torque limiter 110, the output shaft 108A is fitted into a shaft hole (both not shown) formed in the boss portion which is the original node.

  A flange of a flanged shaft 112 (hereinafter simply referred to as “shaft 112”) is attached to a flange portion (not shown) which is a follower in the torque limiter 110.

  The main body 104 of the steady bar 102 is fixed to the shaft 112. This fixing is performed, for example, by opening a hole (not shown) in the main body 104 and joining the shaft 112 and the main body 104 by welding in a state where the shaft 112 is inserted into the hole. Alternatively, all screw bolts are used for the shaft 112, the all screw bolts are inserted into through holes (not shown) provided in the main body 104, and the nuts (not shown) are fixed by tightening nuts (not shown) protruding from the main body 104. It doesn't matter.

  During normal operation of the elevator 10, the actuator 108 is powered off, and due to the action of the built-in spring (not shown), the steady bar 102 is shown by a solid line in FIG. It is held in a standing standby state.

  When the power of the actuator 108 is turned on, the steady bar 102 is swung down from the stand-by standby state until the actuator 108 is in a horizontal posture. While the power is on, the steady bar 102 is indicated by a one-dot chain line in FIG. Thus, it will be in the operating state which lies in the hoistway 12.

  When the power of the actuator 108 is turned off from the operating state, the steady bar 102 is rotated by the restoring force of the built-in spring and returns to the standby state.

  In this way, the steady bar 102 is rotated by the actuator 108 to be switched between the standing standby state and the lying operation state.

  In the operating state, as shown in FIG. 4A, the steady bar 102 lies on the sides of two rope portions (in the illustrated example, the car side main rope portion 24A and the counterweight side main rope portion 24B). Thus, with one rope run-out suppressing unit 100, lateral run-out in one direction (in the illustrated example, having a main displacement component in the X-axis direction) of the car-side main rope portion 24A and the counterweight-side main rope portion 24B. It can be set as the suppression target. That is, when the car-side main rope portion 24A and the counterweight-side main rope portion 24B have a main displacement component in the X-axis direction, the car-side main rope portion 24A and the counterweight-side main rope portion 24B Then, it comes into contact with (acts with) the steady bar 102 in the activated state, and further shake is suppressed. Here, the lateral shake having the main displacement component in the X-axis direction is hereinafter simply referred to as “lateral shake in the X-axis direction”.

  In this case, a part of the impact that the steady bar 102 receives in the horizontal direction from the two rope portions (in the illustrated example, the car side main rope portion 24A and the counterweight side main rope portion 24B) is one end of the steady bar 102. It is received by the actuator 108 provided at the portion (base end portion).

  The rope shake suppression unit 100 includes a backup member 116 so as to receive the impact also at the other end portion (tip portion) of the steady bar 102.

  As shown in FIG. 7, the backup member 116 has an arm part 116A and a support part 116B provided at the tip of the arm part 116A. In this example, the backup member 116 is formed by bending one end of a bar made of a metal material (for example, stainless steel or aluminum) at a right angle. Note that the arm portion and the support portion are not limited to being integrally formed as in this example, but may be formed separately and joined by welding, bolts, nuts, or the like.

  As shown in FIG. 7B, the backup member 116 has a stand-by posture shown by a one-dot chain line that stands up along the hoistway wall 42A and a support portion 116B. It is switched to the operating posture shown by the solid line that has advanced in the hoistway 12 to the side position of the tip of the steady bar 102. The side position is a side position opposite to the car side main rope portion 24A and the counterweight side main rope portion 24B of the steady bar 102 in the operating state.

  In order to rotate the backup member 116, an actuator 120 is attached to a bracket 118 fixed to the hoistway wall 42 </ b> A, and the backup member 116 is connected to the actuator 120 via a torque limiter 122. As shown in FIG. 4, the actuator 120 is installed outside the lifting / lowering path of the counterweight 28 and the car 26.

  The actuator 120 and the torque limiter 122 are the same type as the actuator 108 and the torque limiter 110 described above, although they are different in size. Further, the manner of connection between the actuator 120 and the backup member 116 via the torque limiter 122 is the same as the manner of connection between the actuator 108 and the steady bar 102 (main body 104) via the torque limiter 110 described above. It is. Therefore, the description of the configuration of the actuator 120 and the torque limiter 122 and the manner of connection between them and the backup member 116 will be omitted.

  During normal operation of the elevator 10, the power source of the actuator 120 is turned off, and the backup member 116 is lifted and lowered by the action of a built-in spring (not shown) as shown by a one-dot chain line in FIG. It is held in a stand-by posture standing along the road wall 42A.

  When the power source of the actuator 120 is turned on, the backup member 116 is swung down from the stand-by standby posture to the horizontal posture by the actuator 120, and while the power source is on, as shown by a solid line in FIG. Then, the support portion 116B is in the operating posture in which the support bar 116 has advanced to the side position of the steady bar 102.

  When the power of the actuator 120 is turned off from the operating state, the backup member 116 is rotated by the restoring force of the built-in spring and returns to the standby posture.

  As described above, the backup member 116 is rotated by the actuator 120 to be switched between the standby posture and the operating posture.

  In the operating posture, the backup member 116 tends to be displaced in the horizontal direction due to the collision of the rope portion that sways (in the illustrated example of FIG. 4A, the car side main rope portion 24A and the counterweight side main rope portion 24B). (In the illustrated example of FIG. 4A, the tip of the steady bar 102 that attempts to be displaced in the X-axis direction) is received by the support 116B.

  As described above, the backup member 116 of the rope runout suppression unit 100 is movable, and during the normal operation of the elevator 10, the standby position retracted from the elevator path of the car 26 and needs to support the steady bar 102. Sometimes switched to the above operating position. The reason that the backup member 216 is movable is also the same in the rope shake suppression unit 200. Such advantages will be described later.

  On the other hand, the backup member 324 of the rope runout suppression unit 300 is fixed as shown in FIGS. 4 (a) and 4 (c). The rope runout suppression unit 300 suppresses runout of a rope portion that has a main displacement component in the Y-axis direction and swings laterally (in the illustrated example of FIG. 4A, the car side main rope portion 24A). Here, the lateral shake having the main displacement component in the Y-axis direction is hereinafter simply referred to as “Y-axis direction lateral shake”.

  As shown in FIG. 4 (a), the backup member 324 is located in a side position opposite to the car-side main rope portion 24A at the front end of the steady bar 302 when in the operating state, so that the hoistway wall It is fixed to 42A.

  As shown in FIG. 4C, the backup member 324 has a mountain shape with a flat top, and the top 324 </ b> A receives the tip of the steady bar 302 to be displaced in the Y-axis direction. The slope 324B on the upper side of the backup member 324 serves as a guide surface when the steady bar 302 swings to the right with respect to the paper surface of FIG. 4C when the standby state is switched to the activated state. Further, the lower slope 324C serves as a guide surface for returning to the top 324A when the tip of the steady bar 302 goes too far downward and swings to the right.

  4 (a) and 4 (c), the backup member 324 is drawn in contact with the steady bar 302 in the activated state, but in reality, there is a slight gap. It should be noted that the slight gap is also the same between the steady bar 102 in the activated state and the support portion 116B of the backup member 116. Considering the impact received by the backup member 324 and the backup member 116 (the support portion 116B thereof), it is preferable that there is no gap, but in reality, it is difficult to have no gap (contact state). Even if there is a gap, if the gap is small, there is no problem in receiving the impact from the steady bar 102 and the steady bar 302.

  Corresponding to each of the rope runout suppression devices I, II, and III having the above-described configuration, the amplitude of the lateral runout of the main rope 24 or the balance rope 32 is detected at the heights H1, H2, and H3. Sensors are provided. The rope shake suppression device corresponding to the sensor that detects the amplitude exceeding the predetermined threshold is activated. The predetermined threshold is a minimum amplitude sufficient to recognize that the main rope 24 or the balancing rope 32 has started to sway due to the shaking of the building 14 caused by a long-period earthquake or strong wind.

  In this case, the operation order of the rope shake suppression units 100, 200, 300, and 400 in the rope shake suppression device III is as follows.

(I) The steady rest bars 102 and 202 are switched from the standby state to the operating state.
(Ii) The backup members 116 and 216 are switched from the standby posture to the operating posture.
(Iii) The steady rest bars 302 and 402 are switched from the standby posture to the operating posture.
Note that (ii) and (iii) may be in the reverse order described above, or simultaneously.

  The rope side runout suppression after (iii) is completed and the state shown in FIG. 4A will be described by taking the car side main rope portion 24A as an example. Hereinafter, in the description using FIG. 4A, when referring to the left, right, up and down direction (orientation) or the like toward the paper surface, the heading “to the paper surface” is omitted.

  When the car-side main rope portion 24A swings due to the shaking of the building 14 due to a long-period earthquake or strong wind, each of the ropes M1 to M8 constituting the car-side main rope portion 24A swings independently. However, if there are no obstacles, it basically rolls with the same behavior. That is, the horizontal shake is maintained while maintaining the arrangement shown in FIG.

  Lateral shake in the Y-axis direction is suppressed by the steady bar 302. When the car-side main rope portion 24A swings upward in the Y-axis direction and contacts the steady bar 302, further displacement of the car-side main rope portion 24A in the Y-axis direction is prevented. After coming into contact with the steady bar 302, the car side main rope portion 24A swings downward in the Y-axis direction, but the amount of displacement remains approximately upward. Thereby, an increase in lateral shake in the Y-axis direction can be suppressed. As can be seen from the above description, basically, in order to suppress lateral deflection in one direction in the main rope 24 or the balancing rope 32, basically, the one direction of the main rope 24 or the balancing rope 32 is the same. It is sufficient to lay a steady bar on one side.

  On the other hand, in order to suppress lateral deflection in the X-axis direction of the car-side main rope portion 24A, a pair of steadying bars 102 and 202 are provided on both sides in the X-axis direction with respect to the car-side main rope portion 24A. . As for the reason for providing both sides as described above, the case where only the steady bar 102 is provided and the steady bar 202 is not provided is assumed, and the case where the car side main rope portion 24A swings along the X axis is described as an example. To do.

  The car side main rope portion 24A swings leftward along the X axis. First, after the rope M1 is displaced by the distance L1 and contacts the steady bar 102, the cage side main rope portion 24A is displaced rightward by a distance approximately twice as long as L1. Turn left again. Following the rope M1, the ropes M2, M3,..., M8 abut against the steady bar 102 one after another. (At this time, the ropes M1 to M8 are collapsed from the arrangement shown in FIG. 4A.)

  In this case, the rope M8 swings leftward and abuts against the steady bar 102, then moves rightward by a distance approximately twice as long as L8, and turns left again.

  While the building 14 continues to shake and energy that causes vibration is applied to the main rope 24, at the height H3, the rope M1 swings with an amplitude approximately twice that of L1, and the rope M8 is approximately Sideways with an amplitude twice that of L8. When the shaking of the building 14 is settled, the lateral vibrations of the rope M1 and the rope M8 gradually converge, but the lateral vibration of the rope M1 converges first due to the difference in amplitude at the initial stage of convergence. The lateral runout of the rope M8 converges. As a result, the time required for convergence of the car-side main rope portion 24A becomes longer. Therefore, another anti-sway bar 202 is provided opposite the anti-sway bar 102, the convergence time of the roll of the rope M8 is made equal to that of the rope M1, and the convergence time of the car side main rope portion 24A is controlled to be steady. Compared to the case where only the bar 102 is used, the length is shortened.

  However, depending on the number and arrangement of the ropes constituting the main rope and the balancing rope, it is not always necessary to provide a pair of steadying bars in order to suppress lateral vibration in one direction, and only one may be provided. That is, even when there is one steady bar, there is no great difference in the horizontal distance from each of a plurality of ropes constituting the main rope and the balancing rope to the steady bar.

  As described above, when the rope M1 swings along the X axis, that is, when the rope M1 swings in the direction perpendicular to the steady bar 102, the rope M1 displaced leftward contacts the steady bar 102. After that, the distance is shifted to the right by approximately twice the distance L1 (that is, the amplitude at this time is twice that of L1).

  A case is assumed where the rope M1 swings sideways with respect to the steady bar 102 and the steady bar 102 does not have the buffer member 106 (only the main body 104). Since the rope M1 slides along the longitudinal direction of the main body 104 even after contacting (collision) with the main body 104, the rope M1 slides along the main body 104 as compared with the case where the rope M1 swings in a direction orthogonal to the main body 104. , The effect of suppressing shake will be diminished.

Therefore, the buffer member 106 is provided, and the surface thereof is formed in a concavo-convex shape (corrugated in this example) continuous in the length direction. As a result, even if the rope M1 abuts (collises) diagonally with respect to the steady bar 102, the rope M1 fits into one of the recesses (in this example, the wave valley), and further in the longitudinal direction. Can be prevented as much as possible. As a result, the displacement of the rope M1 can be stopped at the contact position with respect to the steady bar 102, and the lateral deflection of the rope M1 can be effectively suppressed as compared with the case where the above-described slip occurs.
As can be seen from the above description, the concave and convex shape is such that each of the concave portions has such a size that at least each of the ropes M1 to M8 can be fitted.

  Further, by providing the buffer member 106, the main body 104 is protected from the impact received from the ropes M1 to M8.

  As described above, when the car side main rope portion 24A sways in the Y-axis direction, the rope sway suppressor III is swayed in the X-axis direction by the rope sway suppression unit 300 (stabilization bar 302). Lateral runout is suppressed by the rope runout suppression unit 100 (stabilization bar 102) and the rope runout suppression unit 200 (stabilization bar 202).

  Here, as can be seen from FIG. 4 (a), in the steady bar 302 of the rope steady unit 300, the car-side main rope portion 24A abuts on the left side from the position (three-dimensional intersection) with the steady bar 102. Therefore, from the viewpoint of suppressing the side runout of the car side main rope portion 24A, the left side portion is unnecessary. That is, the steady bar 302 is longer than necessary. This is because the backup member 324 that supports the distal end portion of the steady bar 302 is fixed, and the distal end portion must be extended from the proximal end portion to the hoistway wall 42A where the backup member 324 is installed. is there.

  On the other hand, the steadying bar 102 of the rope runout suppression unit 100 is long enough to suppress the lateral runout in the X-axis direction of the car-side main rope portion 24A, and is not unnecessarily long. This is because the backup member 116 that supports the tip of the steady bar 102 is made movable. That is, since the base end portion of the arm portion 116A of the backup member 116 is rotated so that the support portion 116B is advanced to the side position of the distal end portion of the steady-state bar 102 in the activated state, It is because it is not necessary to extend the said front-end | tip part to the hoistway wall 42B.

  As described above, by making the backup member movable, the steady bar can be shortened compared to the case where the backup member is fixed. As a result, the torque required to rotate the steady bar at its proximal end is reduced, and the actuator that rotates the steady bar can be reduced in size.

  With the steady bars 102, 202, 302, 402 in the activated state and the backup members 116, 216 in the activated posture, the lateral deflection of the car side main rope portion 24A and the counterweight side main rope portion 24B is large. Is within the predetermined threshold value, the rest bars 102, 202, 302, 402 are switched to the standby state and the backup members 116, 216 are switched to the standby posture, and then the operation of the elevator 10 is resumed. The order of switching is the reverse of (i), (ii), and (iii) above, and is as follows.

(iv) The steady rest bars 302 and 402 are switched to the standby state.
(v) The backup members 116 and 216 are switched to the standby posture.
(vi) The steady bars 102 and 202 are switched to the standby state.
Note that (v) and (vi) may be in the reverse order described above, or may be simultaneous.

  As described above, the resting bars 102, 202, 302, and 402 in the standby state are held in an upright state by the action of the built-in springs (not shown) of the actuators 108, 208, 308, and 408, respectively. .

  For this reason, for example, when short-period ground motion that does not require operation of the rope vibration suppression units 100, 200, 300, and 400 because it is not long-period ground motion occurs, the steady-state stabilization bars 102, 202, 302, and 402 are in a standby state. May swing like an inverted pendulum. Since the steady bar 102, 202, 302, 402 is installed in the narrow hoistway 12, even if it is slightly shaken, its tip enters the hoisting path of the car 26 or the counterweight 28 that is the hoisting body. End up.

  When the elevator 10 is operated in this state, the car 26 or the counterweight 28 collides with the steady bars 102, 202, 302, 402, and the steady bars 102, 202, 302, 402 are damaged, The car 26 or the counterweight 28 may be damaged.

  Therefore, a blocking device is provided to prevent the steady bars 102, 202, 302, 402 from unexpectedly entering the lifting path of the car 26 or the counterweight 28.

  As the blocking device, the blocking device 126 of the rope shake suppression unit 100 will be described as a representative, and description and illustration of the blocking devices provided in the rope swing suppression units 200, 300, and 400 will be omitted.

  As shown in FIG. 6, a known electromagnetic actuator 126 is used for the shut-off device. The electromagnetic actuator 126 includes a frame 130 that houses a plunger 128 that is a blocking member and a solenoid (not shown) that is a drive unit that moves the plunger 128 forward and backward. The electromagnetic actuator 126 is attached to the hoistway wall 42 </ b> D via the bracket 132.

  When the electromagnetic actuator 126 energizes the solenoid, the plunger 128 moves backward from the state shown in FIG. 6B to the frame 130 side as shown in FIG. ) And the state shown in FIG. 6B.

  When the solenoid (not shown) is de-energized, the plunger 128 is swung out from the standby state to the operating state between the proximal end and the distal end of the steady bar 102 (in this example, it is swung down). It will be in the state which entered before the course. This prevents the steady bar 102 from unexpectedly entering the lifting path of the car 26 or the counterweight 28 in the standby state. Immediately before the steady bar 102 is switched from the standby state to the operating state, the solenoid is energized. As a result, the plunger 128 moves backward from the path, and the front of the path is opened.

  The electromagnetic actuator 126 can prevent the steady-state bar 102 in the standby state from unexpectedly entering the ascending / descending path of the car 26 or the counterweight 28. However, when the operation state is switched to the standby state, a malfunction of the actuator 108 occurs. For example, a situation may be assumed in which the steady bar 102 remains in the lifting path of the counterweight 28 and the car 26. If the operation of the elevator 10 is restarted in the event that this situation has occurred, the car 26 or the counterweight 28 will collide with the steady bar 102 and the steady bar 102 will be damaged.

  Therefore, in order to prevent damage to the steady bar 102 as much as possible, the steady bar 102 is connected to the output shaft 108A of the actuator 108 via the torque limiter 110 as described with reference to FIG. .

  The torque limiter 110 transmits torque that is equal to or lower than a preset cutoff torque, and blocks transmission of torque exceeding the cutoff torque. The shut-off torque is an overtorque that exceeds the torque required for the actuator 108 to rotate the steady bar 102 around the axis of the output shaft 108 </ b> A when an external force in the vertical direction acts on the steady bar 102 in the operating state. If it occurs, the size is set so as to block the transmission of the overtorque to the output shaft 108A.

  As a result, even if the car 26 or the counterweight 28 that moves up and down collides with the steady bar 102 that has entered the hoistway, the actuator 108 (the output shaft 108A) attached to the hoistway wall 42D does not collide. Since the steady bar 102 idles, the impact force received from the car 26 and the counterweight 28 is alleviated. As a result, damage to the steady bar 102 is prevented as much as possible.

  Further, as described with reference to FIG. 7, the backup member 116 (the support portion 116 </ b> B) supports the steady-state bar 102 from the side of the steady-state steady-state bar 102 (that is, the backup member 116 includes the backup member 116. Even in the operating posture, since the up-down direction of the steady bar 102 is open), the idling is not hindered.

  As described above, the rope shake suppressing device III has been described as an example of the rope shake suppressing device III. As described above, the rope shake suppressing devices I and II have the same configuration as the rope shake suppressing device III, and FIG. 1 and FIG. As shown, the only difference is the installation position of the hoistway 12 in the vertical direction.

  Depending on the difference in the installation position, the rope portion that may be a steady-state object in the main rope 24 or the balancing rope 32 differs as shown in Table 1. In other words, the target rope portion that is the target of steadying that exists on the side of the steadying bar in the operating state is different.

  Further, as is clear from FIG. 4A, the target rope portion also differs depending on the rope runout suppression units 100, 200, 300, and 400 constituting the rope runout suppression devices I, II, and III.

  The rope runout suppression unit 300 is the car side main rope portion 24A or the car side balancing rope portion 32A (cage side rope portion), and the rope runout suppression unit 400 is the counterweight side main rope portion 24B or the counterweight side balancing rope. The portion 32B (the counterweight side rope portion) is the object of steadying.

  Further, the rope run-out suppressing units 100 and 200 are to be shaken only in the combinations shown in Table 1 depending on the installation position (which of the rope run-out restraining devices I, II, and III constitutes) and the position of the car 26 in the vertical direction. It becomes. That is, in the operating state, the steadying bars 102 and 202 are configured such that one of the car side main rope portion 24A and the car side balancing rope portion 32A, the car side rope portion, and the counterweight side main rope portion. Lying on both sides of either one of the rope portions 24B and the counterweight-side counterbalance rope portion 32B (the counterweight-side rope portion), both the rope portions are set as the object of steadying.

  In the above example, as shown in FIG. 6, in the standby state, the steady bar 102 is in an upright state with the proximal end serving as the center of rotation facing downward and the distal end facing upward. When switching to, the steady bar 102 is swung down. However, the present invention is not limited to this, and in the standby state, the base end is in the upright state and the distal end is in the upright state. The bar may be swung up.

<Embodiment 2>
In the first embodiment, for example, as shown in FIG. 4A, a part of the steady bar 302 enters the ascending / descending path of the car 26 in the operating state. For this reason, assuming that the elevator 10 is operated while the steady bar 302 enters the lifting path, the steady bar 302 is connected to the actuator 308 via the torque limiter 310 as described above. It is connected.

  However, for example, the right end corner of the car 26 collides with the steady bar 302 in the activated state shown in FIG. 4A from below, for example, and an upward external force is applied near the base end of the steady bar 302. Assuming that the external force acts, the distance from the applied position of the external force to the output shaft of the actuator 308 (not shown in FIG. 4A) is short, so the torque generated around the output shaft by the external force is a collision. Immediately after that, the breaking torque may not be exceeded. In this case, the steady bar 302 may be bent before the torque limiter 310 starts to act. The same applies to the case where the car 26 collides with the steady bar 302 from above.

  Therefore, in the second embodiment, as shown in FIGS. 8 and 9, the steady bar 334 in the operation state drawn by a solid line is included in the portion of the approaching portion of the car 26 indicated by the two-dot chain line to the lifting path (FIG. 8). The projecting portion 336 projecting upward and the projecting portion 338 projecting downward are provided at the end portion opposite to the actuator 308 in the operating state. In FIGS. 8 and 9, illustration of the other rope shake suppression units 100, 200 and 400 (FIG. 4) is omitted.

  Thus, by providing the protrusions 336 and 338, for example, when the car 26 rises and collides with the steady bar 334 in the operating state, the car 26 first has a protrusion as shown by a one-dot chain line. An upward external force is applied to the steady bar 334 in contact with 338. Since the position where the external force is applied (that is, the installation position of the protrusion 338) is away from the output shaft (not shown) of the actuator 308, the torque generated around the output shaft by the external force is relatively large. As a result, the torque easily exceeds the breaking torque, and the torque limiter 310 is activated immediately after the car 26 collides (that is, the steady bar 334 is idled with respect to the output shaft of the actuator 308). The steady bar 334 starts to rotate as indicated by the alternate long and short dash line. Thereby, it is possible to prevent the steady bar 334 from being bent as much as possible.

  After a certain degree of rotation, the contact position of the car 26 with the steady bar 334 changes from the protruding portion 338 to the vicinity of the base end portion, but once the torque limiter 310 is actuated to rotate (idle) The torque required to continuously rotate the stop bar 334 is much smaller than the cutoff torque. For this reason, the steady bar 334 continues to be pushed upward by the car 26 and rotates. Finally, the steady bar 334 is vigorously pushed out of the lifting path indicated by the two-dot chain line by the car 26 and assumes the posture depicted by the broken line.

  As described above, since the steady bar 334 is pushed out of the lifting path, it does not collide with the steady bar 334 even if the car 26 moves up and down thereafter. Even when the car 26 collides with the steady bar 334 in the downward direction from the top, the projection bar 336 is provided, so that the steady bar is provided as described above. It is possible to prevent the 334 from being bent as much as possible.

  Also in the steady rest suppressing units 100 and 200 (FIG. 4), protruding portions (protruding portions 336 and 338) may be provided in the same manner as described above.

<Embodiment 3>
In the second embodiment, in order to prevent the steady bar from bending due to the collision between the steady bar and the car in the operating state, the steady bar is provided with the protruding portions (projecting portions 336 and 338). On the other hand, in Embodiment 3, it is supposed that the said bending will be prevented by providing a protrusion part in a cage | basket | car.

  As shown in FIG. 10, a first protrusion 44 is provided at the top of the car 26, and a second protrusion 46 is provided at the bottom of the car 26. 10 and 11, the other rope runout suppression units 100, 200, and 400 (FIG. 4) are not shown.

  As shown in FIG. 11, the first projecting portion 44 is an overlapping area overlapping with the steady bar 302 in the operation state in a plan view in the upper part of the car 26 (a region corresponding to the outline of the steady bar 302 in FIG. 11). ) In the end region farther from the actuator 308 than the overlapping region other than the end region (FIG. 10).

  The second protrusion 46 is provided based on the same idea as the first protrusion 44. That is, although the bottom view of the car 26 is omitted, the second projecting portion 46 has an overlapping region (on the outline of the steady bar 302) that overlaps with the steady rest bar 302 in the bottom view at the bottom of the car 26. Among the corresponding regions), the protruding portion protrudes below the overlapping region other than the end region in the end region far from the actuator 308 (FIG. 10).

  Thus, by providing the 1st protrusion part 44 and the 2nd protrusion part 46, when the cage | basket | car 26 raises and approaches from the downward direction with respect to the steady bar 302 of an operation state, for example, the 1st protrusion part 44 will be shown first. Comes into contact with the steady bar 302 and applies an upward external force to the steady bar 302. Since the position where the external force is applied (that is, the installation position of the protrusion 44) is away from the output shaft (not shown) of the actuator 308, the torque generated around the output shaft by the external force is relatively large. As a result, the torque easily exceeds the cutoff torque, and immediately after the collision of the first protrusion 44, the torque limiter 310 is actuated (that is, the steady bar 302 is idled with respect to the output shaft of the actuator 308). And the steady bar 302 starts to rotate as indicated by the alternate long and short dash line. Thereby, it is possible to prevent the steady bar 302 from being bent as much as possible.

  When the rotation is performed to some extent, the car 26 comes into contact with the steady bar 302 instead of the first projecting portion 44, but once the torque limiter 310 is actuated to rotate (idle), the steady bar The torque required to continuously rotate 302 is much smaller than the cutoff torque. Therefore, the steady bar 302 continues to be pushed upward by the car 26 and rotates. Finally, the steady bar 302 is pushed out of the lifting path indicated by the two-dot chain line by the car 26 and assumes the posture depicted by the broken line.

  In this manner, the steady bar 302 is pushed out of the lifting path, and thereafter, the car 26 does not collide with the steady bar 302 even if the car 26 moves up and down. Even when the car 26 collides downward from above on the steady bar 302 in the activated state, the provision of the second protrusion 46 is the same as the provision of the first protrusion 44 as described above. It is possible to prevent the steady bar 302 from being bent as much as possible.

  In addition, corresponding to the steady bars 102 and 202 (FIG. 4) of the rope run-out suppressing units 100 and 200, the same projecting portions (first projecting portion 44 and second projecting portion) are formed on the upper and lower portions of the car. 46) may be provided.

  Further, in the above example, in order to prevent the steady bar from being bent, the upper and bottom portions of the car 26 are provided with dedicated protruding portions (first protruding portion 44 and second protruding portion 46) for the prevention, respectively. It was. However, instead of providing a dedicated member, the shape of a member provided for other purposes may be devised to form a protruding portion having the functions of the first protruding portion 44 and the second protruding portion 46. I do not care.

  For example, in the case of a high-speed type elevator, a wind regulation cover may be provided on each of the top and bottom of the car. However, the wind regulation cover may be formed in a shape such that a part of the wind regulation cover becomes the protruding portion. .

  The rope runout suppression unit according to the present invention can be suitably used as a device that suppresses the lateral runout of the main rope and the balance rope in an elevator with a long up / down stroke installed in a high-rise building, for example.

DESCRIPTION OF SYMBOLS 10 Elevator 24 Main rope 26 Car 28 Balance weight 30 Balance wheel 32 Balance rope 44 1st protrusion part 46 2nd protrusion part 102,202,302,402,334 Stabilization bar 108,208,308,408 Actuator 108A Output shaft 110, 210, 310, 410 Torque limiter 116, 216, 324, 424 Backup member 336, 338 Projection

Claims (3)

A car and a counterweight are suspended by a main rope in a hanging manner, and between the car and the counterweight, a counterbalance rope with a counterbalance wheel suspended at the lowermost end is suspended, and the car A rope runout suppression unit for an elevator configured to move up and down in the opposite direction of the counterweight,
An actuator including an output shaft, and installed outside the lifting path of the car and the counterweight;
A torque limiter,
A steady bar connected to the output shaft via the torque limiter;
A backup member;
Have
The steady bar is rotated by the actuator to stand upright, and a car side main rope portion that is a portion of the main rope that suspends the car and the balance rope, the car and the balance wheel. A cage-side rope portion that is one of the cage-side balance rope portions that are between the balance-weight main rope portion that suspends the balance-weight in the main rope and the balance rope The side of the target rope portion that is the target of the steady weight of the balance weight side rope portion that is one of the balance weight side balance rope portions that are the portion between the balance weight and the balance wheel. To the operating state lying on the
The backup member is located on a side opposite to the target rope portion of the steady bar in the operating state, and a load caused by a collision of the target rope portion that laterally swings against the steady bar is the actuator. With support,
The torque limiter has an excess force exceeding the torque required for the actuator to rotate the steady bar around the axis of the output shaft when an external force in the vertical direction acts on the steady bar in the operating state. A rope runout suppression unit characterized in that when torque is generated, transmission of the overtorque to the output shaft is interrupted. The rope runout suppression unit is installed such that a part of the steady bar of the operating state enters the lifting path of the car and lies on the side of the car side rope part,
The steady bar has a protruding portion protruding upward and a protruding portion protruding downward in the operating state at an end portion on the opposite side of the actuator in the entering portion to the lifting path in the operating state. The rope runout suppression unit according to claim 1, comprising: Car and
With a counterweight,
A main rope that suspends the cage and the counterweight in a hanging manner;
A balancing rope suspended between the car and the counterweight;
A balancing wheel hung on the lowest end of the balancing rope;
The rope runout suppression unit according to claim 1;
Have
The rope runout suppression unit is installed such that a part of the steady bar of the operating state enters the lifting path of the car and lies on the side of the car side rope part,
Of the first overlapping region that overlaps with the steady bar in the activated state in a plan view in the upper portion of the car, the first end region far from the actuator has a region other than the first end region. A first projecting portion projecting upward from the first overlapping region portion is provided,
Of the second overlapping region that overlaps with the steady bar in the activated state at the bottom of the car, in the second end region far from the actuator, in the second overlapping region other than the second end region. An elevator having a second projecting portion projecting downward from the second overlapping region portion.

Images