JP2012162349A - Elevator system including rope crossing detector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator system including a crossing detector capable of reliably detecting the crossing of ropes.SOLUTION: The elevator system 1 includes a plurality of ropes (6 and 7), sheaves (31, 32 and 71) and the crossing detector 10 disposed in the vicinity of the sheaves. The crossing detector 10 includes the first detection roller 12A and the second detection roller 12B arranged in a pair plane-symmetrically with respect to the row of the ropes, the first arm 13A and the second arm 13B that support them respectively, a rod 14, and a detection part 17. The rod 14 holds the first arm 13A and the second arm 13B so that the distance S between the first detection roller 12A and the second detection roller 12B is double the diameter d of the rope or less. The detection part 17 detects that the first detection roller 12A and the second detection roller 12B have been spaced from each other.

Description

  Embodiments of the present invention relate to an elevator system including a crossing detection device that detects when a rope connecting a riding rod and a counterweight swings beyond an allowable value.

  The elevator system includes a plurality of main ropes and compen- sion ropes as ropes for connecting the carriage and the counterweight. The main rope is hung on the main sheave of the hoisting machine by connecting the riding rod and the counterweight in a hanging manner. The compensating rope is suspended between the riding rod and the counterweight in order to cancel out that the weight of the main rope from the riding rod side to the counterweight side becomes unbalanced according to the position of the riding rod. For these ropes, steel wire ropes are used. The plurality of ropes are arranged in a line in order to pass through the sheave.

  Elevators in high-rise buildings have longer hoistway paths than elevators in middle- and low-rise buildings, so the ropes are likely to swing due to the effects of building shaking and wind. If the rope swings so that adjacent ropes contact or cross each other, there is a concern that the adjacent ropes may be replaced by passing through the main sheave or the compensatory while the ropes cross. It is effective to increase the distance between the ropes so that adjacent ropes do not come into physical contact with each other. However, the space that can actually be secured is limited due to the layout with other devices.

  There is an elevator system provided with a shake detection device for early detection of the rope swinging. The shake detection device has rollers arranged on both sides of the amplitude of the rope. The roller suppresses the swing of the rope by contacting when the rope swings with an amplitude greater than a specified value. Further, the roller is supported so as to be displaced when the rope is pressed by contact. The shake detection device includes a switch that detects that the roller has been displaced beyond a preset amount. The elevator system stops the riding based on the signal from the switch.

JP 2010-58940 A

  By the way, the mode when the rope swings is roughly divided into two. The first mode is a case where the ropes arranged in a row can swing apart, and the second mode is a case where all the ropes swing in the same direction in synchronization. In the second mode, the ropes rarely come into contact. Therefore, it is desirable to positively detect the first mode runout that is likely to come into contact with or cross each other.

  However, conventional shake detection devices are not configured to detect the first mode and the second mode separately. If a switch for detecting displacement is attached to each roller, it may be possible to determine whether the vibration is in the first mode or the second mode. However, the cost increases as the number of switches increases. Furthermore, it is difficult to determine whether the swing is in the second mode or the ropes have crossed.

  Further, in general, the moving speed of the norikura is higher in the elevator system employed in a high-rise building, and therefore the moving speed of the main rope and the compen- sion rope is also higher. In such an elevator system, when the ropes cross, the crossed portion passes through the main sheave and the compensatory as it is in an instant.

  Then, this invention provides an elevator system provided with the crossing detection apparatus which detects reliably that the rope crossed.

  An elevator system according to an embodiment includes a rope that is arranged in a line in parallel and passed between the riding rod and the counterweight, a sheave that is arranged to change a direction in which the rope is stretched, and a sheave near the sheave An intersection detection device to be disposed. The intersection detection device includes a first detection roller and a second detection roller, a first arm and a second arm, a rod, and a detection unit. The first detection roller and the second detection roller are arranged in a pair that is plane-symmetric with respect to the row of ropes. The first arm and the second arm respectively support the first detection roller and the second detection roller so as to be displaced in a direction across the row of ropes. The rod holds the first arm and the second arm so that the distance between the first detection roller and the second detection roller is not more than twice the diameter of the rope. The detection unit detects that the first detection roller and the second detection roller are separated.

The figure which shows the outline of the elevator system of 1st Embodiment in a cross section. FIG. 2 is a perspective view of the periphery of a compensatory of the elevator system shown in FIG. 1. FIG. 2 is a side view of the periphery of the hoisting machine of the elevator system shown in FIG. FIG. 3 is a perspective view of the shake detection device illustrated in FIG. 2. The top view of the shake detection apparatus shown in FIG. The side view of the shake detection apparatus shown in FIG. The side view of the switch of the shake detection apparatus shown in FIG. The side view in the state where the switch shown in FIG. 7 act | operated. The top view when the shake detection apparatus shown in FIG. 4 receives the shake of the 1st mode. The side view when the shake detection apparatus shown in FIG. 4 receives the shake of the first mode. The top view when the shake detection apparatus shown in FIG. 4 receives the shake of the 2nd mode. The side view when the shake detection apparatus shown in FIG. 4 receives the touch of 2nd mode. The flowchart of control at the time of detecting that the rope crossed with the shake detection apparatus shown in FIG. The top view of the shake detection apparatus of the elevator system of 2nd Embodiment. The perspective view of the periphery of the compensatory of the elevator system of 3rd Embodiment.

  The elevator system 1 of 1st Embodiment is demonstrated with reference to FIGS. The elevator system 1 shown in FIG. 1 includes a hoisting machine 3, a riding rod 4, a counterweight 5, a main rope 6, a compensation rope 7, a main sheave 31, a compensation sheave 71, And an intersection detection device 10. The elevator system 1 includes a machine room 201 on a hoistway 200. In the machine room 201, a hoisting machine 3 and a control panel 202 are installed. The main sheave 31 is attached to the output shaft of the hoisting machine 3, and the main rope 6 is hung around it. The carriage 4 and the counterweight 5 are suspended by the main rope 6 and move along guide rails installed vertically in the hoistway 200. The compensation rope 7 is hung on the riding rod 4 and the counterweight 5, and hung on a compensation sheave 71 disposed in a pit 203 below the hoistway 200.

  The main rope 6 and the compensation rope 7 are ropes passed between the riding rod 4 and the counterweight 5, and are configured by arranging a plurality of them in a line in parallel. As the carriage 4 moves, the weight difference between the main rope 6 on the carriage 4 side and the main rope 6 on the counterweight 5 side with the main sheave 31 as the center changes. The compensation rope 7 is attached to offset this weight difference.

  The main sheave 31 and the compensation sheave 71 are a form of sheave that is arranged to change the direction of the rope. The main sheave 31 changes the direction of the main rope 6, and the compensation sheave 71 changes the direction of the compensation rope 7. A deflecting sheave 32 is further provided so that the main rope 6 is suspended vertically with respect to the carriage 4 and the counterweight 5. The main rope 6 is hooked on the main sheave 31 and the deflecting sheave 32. This deflecting sheave 32 is also a form of sheave that is arranged to change the direction of the rope.

  The intersection detection device 10 is disposed in the vicinity of the compensation sheave 71 shown in FIGS. 1 and 2 and in the vicinity of the main sheave 31 and the deflecting sheave 32 shown in FIGS. 1 and 3. As shown in FIG. 2, the intersection detection device 10 disposed in the vicinity of the compensation sheave 71 is attached to an upper portion of a casing 72 that surrounds the compensation sheave 71. The casing 72 includes a guide device 74 that is fitted to the guide rail 73 for the compensation sheave 71 installed in the pit 203, and moves in the vertical direction along the guide rail 73. Further, as shown in FIG. 3, the crossing detection device 10 disposed in the vicinity of the main sheave 31 and the deflecting sheave 32 has a lower surface of a beam constituting the machine bed 33 that supports the hoisting machine 3 and the deflecting sheave 32. Is attached.

  Since these intersection detection devices 10 have the same configuration, the intersection detection device 10 arranged in the vicinity of the compensation sheave 71 will be described as a representative. As shown in FIGS. 4 and 5, the intersection detection device 10 includes a frame 11, a first detection roller 12A, a second detection roller 12B, a first arm 13A, and a second arm 13B. , Rod 14, restraining spring 15, neutral spring 16, and detection unit 17. The frame 11 is formed so as to surround the five compensation ropes 7 arranged in a line.

  The first detection roller 12 </ b> A and the second detection roller 12 </ b> B are separated from the compensation rope 7 so as to come into contact when the compensation rope 7 swings with an amplitude exceeding an allowable level, and the compensation rope 7 They are arranged in a pair symmetrically about the 7 rows. In this embodiment, the allowable amplitude because the ropes do not cross each other means that the amplitude when the ropes pass through the crossing detection device 10 is not more than twice the diameter of the ropes. Therefore, the interval S between the first detection roller 12A and the second detection roller 12B is set to be not more than twice the diameter d of the compensation rope 7 as shown in FIG. The first detection roller 12A and the second detection roller 12B each have a shaft 121 extending from both ends via a bearing.

  The outer peripheral surfaces of the first detection roller 12A and the second detection roller 12B are formed of urethane rubber having excellent wear resistance, and reduce impact and collision noise when coming into contact with the compensation rope 7, And prevent the rope from being damaged. Even if the moving compensation rope 7 comes into contact with the first detection roller 12A and the second detection roller 12B, the first detection roller 12A and the second detection roller 12B are provided with bearings. Therefore, contact resistance is achieved by rotating.

  The first arm 13A has a base end connected to the frame 11 as shown in FIG. 4, and a rotating end connected to a shaft 121 extending from the end of the first detection roller 12A as shown in FIG. Yes. Similarly, the second arm 13B has a base end connected to the frame 11 as shown in FIG. 4, and a rotating end attached to a shaft 121 extending from the end of the second detection roller 12B as shown in FIG. It is connected. The first arm 13 </ b> A and the second arm 13 </ b> B are rotated about their respective base ends to cross the first detection roller 12 </ b> A and the second detection roller 12 </ b> B across the row of the compensation rope 7, respectively. Displace in the direction.

  As shown in FIG. 5, the rod 14 is such that the first detection roller 12A and the second detection roller 12B do not contact the compensation rope 7, and the distance between the first detection roller 12A and the second detection roller 12B. The first arm 13 </ b> A and the second arm 13 </ b> B are held in a range where S is not more than twice the diameter d of the compensation rope 7. As shown in FIG. 6, the base end 141 of the rod 14 is rotatably connected to the second arm 13B, and the tip 142 passes through the first hole 131 of the fin 130 formed in the first arm 13A. Has been. The distance between the first detection roller 12A and the second detection roller 12B is set by a nut 143 attached to the rod 14 so as to abut against the fin 130 from the second arm 13B side.

  That is, if the diameter d of the compensation rope 7 and the interval S between the first detection roller 12A and the second detection roller 12B are set, the interval S is set to satisfy d <S <2d. At this time, the distance between the first detection roller 12A and the compensation rope 7 so that the first detection roller 12A and the second detection roller 12B are arranged symmetrically with respect to the compensation rope 7. The distance between the second detection roller 12B and the compensation rope 7 is set to be (S−d) / 2.

  As shown in FIG. 6, the restraining spring 15 is passed through the rod 14 in the portion that has passed through the first hole 131 of the fin 130 of the first arm 13A, and the direction in which the tip 142 of the rod 14 and the fin 130 are separated from each other. That is, the fin 130 is urged in a direction in which the fin 130 is pressed against the nut 143. Accordingly, the suppression spring 15 suppresses the first detection roller 12A and the second detection roller 12B from being separated from each other. When a force stronger than the restraining force of the restraining spring 15 acts in the direction of expanding the first detection roller 12A and the second detection roller 12B, the first detection roller 12A and the second detection roller 12B are mutually connected. Displaces away.

  As shown in FIGS. 4 and 6, a guide 161 is passed through the second hole 132 of the fin 130 formed in the first arm 13A along the direction in which the first arm 13A is displaced. A base end 162 of the guide 161 is fixed to a bracket 160 attached to the frame 11. The neutral springs 16 are respectively attached to guides 161 extending on both sides of the fin 130, and are respectively attached between the bracket 160 and the fin 130 and between the fin 130 and the tip 163 of the guide 161 so as to sandwich the fin 130. Has been.

  As described above, the neutral spring 16 is assembled between the first arm 13A and the frame 11 so that the first detection roller 12A and the second detection roller 12B are moved relative to the reference position of the compensation rope 7. Place it at a certain distance. Here, the “reference position” means a position where the compensation rope 7 should be when the compensation rope 7 is not swung. Hereinafter, when the first detection roller 12A, the second detection roller 12B, the first arm 13A, the second arm 13B, and the main rope 6 are referred to as “reference positions”, they are all used when there is no disturbance. Indicates that it is in the state it should be.

  The detection unit 17 is configured to detect that the first detection roller 12A and the second detection roller 12B are separated from each other. As shown in FIGS. 4 and 6, the detection unit 17 includes a switch 171, a cam 172, a lever 173, and a striker 174. The switch 171 is fixed to a base plate 170 attached to the rotation end of the first arm 13A. The switch 171 is connected so as to cut off conduction when the actuator 171A is pushed.

  As shown in FIG. 7, the base plate 170 has a first shaft 175 and a second shaft 176. The first shaft 175 is arranged on a line along the direction in which the actuator 171A of the switch 171 is displaced. The second shaft 176 is disposed at a position off the line along the direction in which the actuator 171A is displaced.

  As shown in FIGS. 6 and 7, the cam 172 has a cam surface 172 </ b> A and is assembled to the first shaft 175. The cam surface 172A is in contact with the actuator 171A of the switch 171, and the cam 172 rotates about the first shaft 175 to displace the actuator 171A. The cam surface 172A includes a first surface 172B that is in contact with the protruding actuator 171A, a second surface 172C that holds the actuator 171A in a pressed state, and a second surface from the first surface 172B. Displacement surface 172D that gently connects to 172C is provided.

  The second surface 172C is formed in a concentric circle with the first axis 175 as the center. When the second surface 172C is in contact with the actuator 171A, the cam 172 does not receive torque. Therefore, when the second surface 172C is rotated to a posture in contact with the actuator 171A, the cam 172 is held in that posture. Further, the displacement surface 172D is formed on a surface along the involute curve. The displacement of the actuator 171A is constant with respect to the angle at which the cam 172 rotates. That is, since the torque required to rotate the cam 172 becomes constant, the operations of the cam 172 and the actuator 171A are stabilized.

  The lever 173 is assembled to the second shaft 176 as shown in FIGS. 6 and 7, and has a working end 173A and an operation end 173B. The working end 173A is connected to the cam 172 via a connecting shaft 177 at a position eccentric from the rotation center of the cam 172. The operation end 173B extends in a direction away from the second shaft 176 across the direction in which the first arm 13A and the second arm 13B are relatively displaced.

  The striker 174 is fixed to the rod 14 as shown in FIGS. 6 and 7, and includes a hook 174A. When the first detection roller 12A and the second detection roller 12B are separated from each other, that is, when the first arm 13A and the second arm 13B are separated from each other, the hook 174A is engaged with the operation end 173B of the lever 173. The lever 173 is rotated around the second shaft 176. Since the working end 173A of the lever 173 is connected to the cam 172, as shown in FIG. 8, when the lever 173 is rotated, the cam 172 is also rotated around the first shaft 175. The

  In the case of this embodiment, the distance from the second shaft 176 to the connecting shaft 177 is longer than the distance from the first shaft 175 to the connecting shaft 177 as shown in FIG. The angle at which the cam 172 is rotated is greater than the angle at which the 173 is rotated. That is, the cam 172 is rotated to an angle sufficient to operate the switch 171 with only a slight increase in the distance between the first detection roller 12A and the second detection roller 12B.

  Further, as shown in FIGS. 4 to 6, the intersection detection device 10 is configured to three-dimensionally intersect the first detection roller 12 </ b> A and the second detection roller 12 </ b> B at both ends of the row of the compensation rope 7. A pair of auxiliary rollers 12C is provided. The auxiliary roller 12C prevents the compensation rope 7 from swinging along the first detection roller 12A and the second detection roller 12B. The auxiliary roller 12C is assembled to the support shaft 121C via a bearing and is fixed to the frame 11. Similar to the first detection roller 12A and the second detection roller 12B, the outer peripheral surface of the auxiliary roller 12C is formed of a member having excellent wear resistance, such as urethane.

  In the elevator system 1 configured as described above, when a plurality of compensation ropes 7 are swung in the first mode to move apart and two adjacent ropes cross, the rope crosses as shown in FIG. As the portion 7A passes through the intersection detection device 10, the interval S between the first detection roller 12A and the second detection roller 12B is expanded to the maximum width 2d of the intersection 7A. That is, the first detection roller 12A and the second detection roller 12B whose interval S is set in the range of d <S <2d are displaced by (2d−S) / 2, respectively.

  As a result, the first arm 13A and the second arm 13B rotate away from each other as shown in FIG. 10, and the gap G set between the hook 174A of the striker 174 and the operation end 173B of the lever 173 is set. As described above, when the first arm 13A and the second arm 13B are relatively displaced, the hook 174A of the striker 174 kicks the operation end 173B of the lever 173. When the lever 173 is rotated, the cam 172 rotates and the operating element 171A is pushed. The switch 171 is set so that the output is turned OFF when the actuator 171A is pushed.

  When the plurality of compensation ropes 7 swing in the second mode in which they move together in the same direction, they come into contact with one of the detection rollers. At this time, the first arm 13A and the second arm 13B are connected by the rod 14 as shown in FIG. 12, and the spacing S between the first detection roller 12A and the second detection roller 12B is set by the restraining spring 15. Configured to maintain.

  As shown in FIG. 11, when the compensation rope 7 hits the first detection roller 12A, the first detection roller 12A is pushed by the compensation rope 7 and displaced. Then, the second detection roller 12B is displaced in the same direction as the first detection roller 12A while maintaining the interval S as shown in FIG.

  When the compensation rope 7 swings in the second mode, the first arm 13A and the second arm 13B are displaced in the same direction so as to maintain the distance S. Therefore, the hook 174A of the striker 174 has the lever 173. The operation end 173B is not touched. Therefore, the switch 171 does not turn off. When the compensation rope 7 returns to the reference position, the first arm 13A and the second arm 13B are returned to their original positions by the neutral spring 16 mounted between the first arm 13A and the frame 11. . The intersection detection device 10 suppresses the shake of the compensation rope 7 by returning the first detection roller 12A and the second detection roller 12B to the original positions by the force of the neutral spring 16.

  In this way, the intersection detection device 10 dampens the rope and turns off the switch 171 when it is assumed that adjacent ropes intersect as shown in FIG. 9, and the rope in the same direction as shown in FIG. The switch 171 is kept ON when is displaced. When the rope swings due to the shaking of the building or the wind, it is generally the second mode, and the detection unit 17 does not operate as shown in FIGS. 11 and 12.

  As shown in FIG. 1, the elevator system 1 configured as described above includes a control unit 18 that is connected to the intersection detection device 10 and intervenes in the control for driving the riding rod 4. The control unit 18 is not independent and may be configured as a part of the control panel 202 of the elevator system 1. The function of the control unit 18 will be described with reference to FIG.

  As shown in the flowchart of FIG. 13, during the service operation of the elevator system 1, if there is a saddle call registration or a hall call registration and the carriage 4 starts to move (S <b> 1), the control unit 18 causes the intersection detection device 10 to start moving. Monitoring of the signal of the switch 171 provided in the detector 17 is started (S2). The control unit 18 determines whether the signal of the switch 171 is turned off, that is, whether a rope crossing is detected (S3).

  When it is detected that the vehicle has intersected, it is stored that the switch 171 is turned off (S4), and the management center is notified that an abnormality has occurred (S5). Even if the signal of the switch 171 is turned OFF before the control unit 18 arrives at the destination floor, the control section 18 does not stop the riding 4 urgently, and the riding to the first registered floor from the riding floor 4 Move 4 to land. In addition, when the boarding place nearest to the traveling direction of the riding board 4 is registered as a landing floor, the riding board 4 may be stopped on the planned landing floor.

  The control unit 18 determines whether or not the riding rod 4 has arrived at the destination floor (S6) regardless of whether the rope has crossed or not. If the rope has not arrived at the destination floor, the control unit 18 continues. It continues to determine whether a rope crossing is detected (S3). When arriving at the destination floor, the control unit 18 determines whether a detection signal is stored (S7).

  When the detection signal is stored, the passenger is informed that the operation of the ride 4 is interrupted, and the service of the ride 4 is stopped (S8). While the worker arrives and confirms the situation, the service of the rider 4 remains stopped until the restoration work is completed (S9). The fact that there is a possibility that the ropes have crossed is previously notified to the management center when the signal of the switch 171 is turned OFF (S5), so the time until the worker arrives is shortened. In addition, when the riding car 4 reaches the destination floor and the service is stopped, the management center of the elevator system 1 may be notified that an abnormality has occurred.

  When the inspection and restoration of the rope is completed and the service of the rider 4 is resumed, the state is on standby (S10) until the next call registration is made. Further, when the signal that detects the intersection is not stored, the next call is not made or the standby (S10) state is entered.

  In this way, when the detection unit 17 detects that the first detection roller 12A and the second detection roller 12B are separated while the riding rod 4 is moving, the control unit 18 is registered from the riding rod 4. Stop Norikura 4 on the first destination floor. The elevator system 1 can move the carriage 4 to the destination floor without any problem only in the operation as long as the ropes intersect. Therefore, like this elevator system 1, it is safer for the passenger to land the passenger 4 on the first destination floor and to quickly drop the passenger.

  When the main rope 6 and the compensation rope 7 are compared, the tension is applied to the main rope 6 as much as the carriage 4 and the counterweight 5 are suspended. 7 is tensioned only by the weight of the compensation sheave 71. Therefore, the compensation rope 7 is more likely to cross. Therefore, the intersection detection device 10 is installed in the vicinity of the compensation sheave 71 in order to detect the intersection of the compensation rope 7, and in addition, the main sheave 31 and the deflection are detected in order to detect the intersection of the main rope 6. It is also installed near the sheave 32.

  The switch 171 provided in the detection unit 17 is configured to be turned off when the operating element 171A is pushed in the first embodiment. Any configuration may be used as long as the detection unit 17 outputs that the first detection roller 12A and the second detection roller 12B are separated by 2d or more. For example, when it is detected that the distance between the first detection roller 12A and the second detection roller 12B has increased, the actuator 171A may be configured to protrude, or the actuator 171A may be binary. It may be a lever that changes automatically.

  In the flowchart of FIG. 13, when the detection unit 17 detects that the first detection roller 12 </ b> A and the second detection roller 12 </ b> B are separated from each other, it is determined whether the destination floor is set by the call registration. May not be set, it may be determined that the passenger is not in the ride 4 and the operation of the ride 4 may be stopped immediately. Further, when it is determined that the destination floor is set and there are passengers on the rider 4, the moving speed of the rider 4 may be reduced.

  According to the elevator system 1 configured as described above, an intersection generated in the main rope 6 or the compensation rope 7 is detected early and reliably by passing through the intersection detection device 10. Can be prevented.

  The intersection detection device 10 of the elevator system 1 according to the second embodiment will be described with reference to FIG. A configuration having the same function as each configuration of the intersection detection device 10 shown in the first embodiment is given the same reference numerals as the configuration of the elevator system 1 of the first embodiment in FIG. The description here is omitted by referring to the description of the embodiment. Further, the intersection detection device 10 shown in FIG. 14 is installed in the vicinity of the compensation sheave 71 and detects that the compensation rope 7 has intersected, similarly to the intersection detection device 10 of the first embodiment. And the case where it is installed in the vicinity of the main sheave 31 and the deflecting sheave 32 of the hoisting machine 3 and the crossing of the main rope 6 is detected.

  In the intersection detection device 10 of the second embodiment, the detection unit 17 is installed not only on one end of the first detection roller 12A and the second detection roller 12B but also on both ends. Other configurations are the same as those of the intersection detection apparatus 10 of the first embodiment. Therefore, the description of the first embodiment is referred to for the description of details and the control of the elevator system 1 including the intersection detection device 10 of the second embodiment. As shown in FIG. 14, when the number of the main ropes 6 or the compensation ropes 7 is large, or when the number is 9 in the second embodiment, the first detection roller 12A and the second detection roller 12B are long. Become. Therefore, if the detection unit 17 is provided only on one side and the two ropes farthest from the detection unit 17 intersect, the first detection roller 12A and the second detection roller 12B intersect with each other. There is a concern that it may not be possible to detect that the intersection has passed just by opening diagonally by passing the part.

  Since the detection unit 17 of the intersection detection device 10 of the second embodiment is disposed at both ends of the first detection roller 12A and the second detection roller 12B, respectively, Either one of the detection units 17 detects without missing.

  The intersection detection device 10 of the elevator system 1 according to the third embodiment will be described with reference to FIG. The configuration having the same function as each configuration of the intersection detection device 10 shown in the first embodiment is given the same reference numerals as the configuration of the elevator system 1 of the first embodiment in FIG. The description here is omitted by referring to the description of the embodiment.

  Further, the intersection detection device 10 shown in FIG. 14 is installed in the vicinity of the compensation sheave 71 and detects that the compensation rope 7 has intersected, similarly to the intersection detection device 10 of the first embodiment. And the case where it is installed in the vicinity of the main sheave 31 and the deflecting sheave 32 of the hoisting machine 3 and the crossing of the main rope 6 is detected. In the third embodiment, a case where the intersection detection device 10 is installed in the vicinity of the compensation sheave 71 in order to detect the intersection 7A of the compensation rope 7 will be described as an example.

  The elevator system 1 of 3rd Embodiment is provided with the anti-vibration apparatus 20 other than the intersection detection apparatus 10 installed in the vicinity of the compensation sheave 71, as shown in FIG. The anti-vibration device 20 is disposed at a position that is more distal than the intersection detection device 10 with respect to the compensation sheave 71. As shown in FIG. 15, the anti-sway device 20 is fixed to a support 75 extending from a guide rail 73 that guides the casing 72 of the compensation sheave 71. The anti-rest device 20 may be fixed to a support extending from the casing 72 of the compensation sheave 71. When the riding rod 4 or the counterweight 5 descends to the lowermost part of the hoistway 200, the anti-rest device 20 is installed in a range that does not interfere with these.

  Since it is desired to detect that the intersection 7A of the compensation rope 7 as shown in FIG. 9 of the first embodiment passes through the compensation sheave 71, as shown in FIG. It is only necessary that the crossing detection device 10 and the swing prevention device 20 are installed so as to surround either one of the extending compensation ropes 7.

  As shown in FIG. 15, the anti-vibration device 20 according to the third embodiment includes a suppression roller 21, a suppression arm 22, a rod 14, a suppression spring 15, and a neutral spring 16. Similar to the first detection roller 12 </ b> A and the second detection roller 12 </ b> B, the suppression roller 21 is disposed in a pair symmetrically with respect to the row of the compensation rope 7. Further, the suppression arm 22 supports the suppression roller 21 so as to be displaced in a direction crossing the row of the compensation rope 7.

  The restraining arm 22 is the same as the first arm 13A and the second arm 13B of the intersection detection device 10 in order to arrange the restraining roller 21 at a certain distance with respect to the reference position of the compensation rope 7. And the restraining spring 15 and the neutral spring 16. When the distance between the pair of suppression rollers 21 is T and the diameter d of the compensation rope 7 is set, T is set to satisfy d <T <2d.

  Thus, when compared with the intersection detection device 10, the anti-vibration device 20 has substantially the same configuration except that the detection unit 17 is not provided. When the compensation rope 7 is shaken, the anti-sway device 20 brings the restraining roller 21 into contact with the compensation rope 7 so that the shake width of the compensation rope 7 is reduced.

  Therefore, considering the function of suppressing the deflection of the compensation rope 7, the spring characteristic of the neutral spring 16 may be changed from that of the intersection detection device 10. Further, the spring strength of the suppression spring 15 is made smaller than that of the suppression spring 15 of the intersection detection device 10 in order to reduce resistance when the intersection 7A passes. In addition, since the anti-vibration device 20 is not intended to detect the crossing portion of the rope, a torsion coil spring or the like is attached to the base of the restraining arm 22 instead of the rod 14, restraining spring 15, and neutral spring 16. The arms 22 may be moved independently of each other.

  According to the elevator system 1 of the third embodiment, the swing of the first mode and the swing of the second mode due to the shaking of the building and the wind are attenuated by the restraining device 20 until they are sufficiently reduced. Let Thereby, when the detection part 17 of the crossing detection apparatus 10 act | operates, it becomes clear whether the rope is swinging in the 1st mode, or the crossing part of the rope passed the sheave. Therefore, the crossing portion is easily detected without being covered with a simple rope swing. In addition, since the swinging width of the rope is reduced by the swinging device 20, the interval S between the first detection roller 12 </ b> A and the second detection roller 12 </ b> B of the crossing detection device 10 is greater than the interval T of the suppression roller 21 of the swinging device 20. By setting a smaller value, it becomes easier to detect the intersection of the ropes.

  In FIG. 15, the intersection detection device 10 and the swing prevention device 20 are provided only on one side of the compensation rope 7 that is folded back by the compensation sheave 71. When the moving speed of the riding rod 4 is fast, the intersection passes through the sheave instantly. Therefore, even when the crossing detection device 10 is provided only on one side of the rope hung around the sheave, the function is sufficiently achieved. As in the cross detection device 10 of the first embodiment, the cross detection device 10 and the anti-sway device 20 may be installed on both sides of the compensation rope 7 folded back by the compensation sheave 71.

  As described above, the intersection detection device 10 shown in each embodiment makes it easy to detect that the main rope 6 or the compensation rope 7 intersects. The elevator system 1 detects an intersection at an early stage, thereby preventing an accident in which a related device breaks down. In addition, it is positively detected that the distance S between the first detection roller 12A and the second detection roller 12B has been widened by the crossing portion of the rope, and in the second mode due to building shaking or wind. Rope runout is not detected by the detector 17. That is, false detection is reduced and the accuracy of detecting an intersection is improved.

  And when this elevator system 1 detects the crossing part by the detection part 17, it does not stop the operation of the elevator system 1 immediately, but the rider 4 of the destination floor registered from the rider 4 or the landing. The rider 4 is moved to the first destination floor in the traveling direction, and priority is given to lowering passengers. That is, the elevator system 1 is safe because it does not trap passengers in the passenger car 4.

  In addition, the structure of the cam and lever employ | adopted as the detection part of the intersection detection apparatus in each embodiment is an example for operating a switch. Therefore, the switch may be operated to detect the crossing portion of the rope by other configurations. For example, the urging member is locked with a restraining pin, and the first arm 13A and the second arm 13B are moved when the crossing portion of the rope passes between the first roller 12A and the second roller 12B. When it expands, the configuration may be such that the restraining pin is removed and the urging member operates the switch actuator.

  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 spirit and scope of the invention, and in the invention described in the claims and equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Elevator system, 3 ... Hoisting machine, 31 ... Main sheave (sieve), 32 ... Deflection sheave (sieve), 4 ... Norikura, 5 ... Counterweight, 6 ... Main rope (rope), 7 ... Compen Seismic rope (rope), 71 ... Compensation sheave (sheave), 10 ... Cross detection device, 12A ... First detection roller, 12B ... Second detection roller, 13A ... First arm, 13B ... Second 14 ... Rod, 15 ... Suppression spring, 16 ... Neutral spring, 17 ... Detection part, 171 ... Switch, 171A ... Actuator, 172 ... Cam, 173 ... Lever, 174 ... Striker, 175 ... First shaft, 176 ... second shaft, 18 ... control unit, 20 ... anti-vibration device, 21 ... restraining roller, 22 ... restraining arm.

Claims (8)

A plurality of ropes arranged in parallel in a row and passed between the rider and the counterweight,
A sheave arranged to change the direction of stretching the rope;
An intersection detection device disposed in the vicinity of the sheave,
The intersection detection device includes:
A first detection roller and a second detection roller disposed in a pair that are plane-symmetric with respect to the row of ropes;
A first arm and a second arm that respectively support the first detection roller and the second detection roller so as to be displaced in a direction across the row of ropes;
A rod that holds the first arm and the second arm so that the distance between the first detection roller and the second detection roller is not more than twice the diameter of the rope;
An elevator system comprising: a detection unit configured to detect that the first detection roller and the second detection roller are separated from each other. The detector is
A switch attached to the first arm for holding the first roller;
A cam that displaces the actuator of the switch by being assembled and rotated on a first shaft fixed to the first arm;
A lever having a working end which is assembled to a second shaft fixed to a position away from the first shaft of the first arm and connected to the cam at a position eccentric from the rotation center of the cam; ,
When the first detection roller and the second detection roller are fixed to the rod interlocked with the second arm that holds the second roller and the second detection roller is separated, the lever is engaged with the operation end of the lever. The elevator system according to claim 1, further comprising a striker that rotates the lever around a second axis. The intersection detection device includes:
A restraining spring that is attached to the rod and prevents the first detection roller and the second detection roller from being separated from each other;
A neutral spring that holds the first detection roller and the second detection roller at a fixed distance from a reference position of the rope;
The elevator system according to claim 1, further comprising: 2. The elevator system according to claim 1, wherein the detection units are arranged at both ends of the first detection roller and the second detection roller, respectively. The rope is a compensation rope suspended from the riding rod and the counterweight,
The elevator system according to claim 1, wherein the sheave is a compensation sheave on which the compensation rope is hung. The rope is a main rope that suspends the riding rod and the counterweight,
The elevator system according to claim 1, wherein the sheave is at least one of a main sheave and a deflected sheave on which the main rope is hung. A bracing device distal to the sheave relative to the sheave;
The anti-rest device is
A pair of suppressing rollers disposed between the ropes,
The elevator system according to claim 1, further comprising: a suppression arm that supports each of the suppression rollers so as to be displaced in a direction across the row of ropes. When the detection unit detects that the first detection roller and the second detection roller are separated from each other while the riding is moving, the first destination floor registered from the riding The elevator system according to claim 1, further comprising a control unit that stops the riding.

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