JP5481170B2 - Double deck elevator device - Google Patents

Description

  The present invention relates to a double deck elevator apparatus having two upper and lower cars in a car frame.

  The double deck elevator with two upper and lower cars in the car frame is provided with driving means on the upper part of the upper car, and is provided below the upper car and below the lower car connected to this driving means by a rope. A rope is hung on the pulley, and the upper car and the lower car are driven by the driving means.

  Applied to the double deck elevator constructed in this way, as a means to detect abnormalities in the rope that drives the upper car and the lower car, conventionally, a detection roller is arranged to contact the rope under the car and the rope The detection roller is displaced in response to the abnormal loosening of the rope and the cutting of the rope, and the emergency stop device is operated (for example, refer to Patent Document 1). One of the ropes that can detect that one of them has been cut (for example, see Patent Document 2), and further, a detection switch is provided for each rope to detect the deflection of the spring due to the abnormality of the rope. (For example, refer to Patent Document 3).

JP2007-331871 (paragraph numbers 0021 to 0023, FIG. 4) Japanese Utility Model Publication 55-32381 (Fig. 2) Shokai 59-173671 (Fig. 2)

  However, in the case of the reference 1 described above, for example, when an abnormality occurs in one of a plurality of ropes, for example, when a predetermined rope is cut, other ropes that are stretched Thus, there is a problem that the position of the detection roller is held and abnormality detection is not performed. As a result, there is a possibility that the operation will continue with the rope being abnormal, which may lead to a serious situation, and when an abnormality is detected, the emergency stop device will operate and become inoperable, requiring time to recover. There is also.

  Moreover, in the thing of the reference document 2, although the rope cutting | disconnection abnormality which generate | occur | produced in one rope fundamentally can be detected, the rope cutting | disconnection position is far from an abnormality detection position, and When the other side of the rope is heavier across the hoist, the rope end does not fall and the rope cutting abnormality cannot be detected.

  Furthermore, in the thing of the reference document 3, it was necessary to provide a detection switch in each rope end part, and there existed a problem that the number of parts increased and an electrical circuit became complicated.

  The present invention has been made from the above-described prior art, and its purpose is a double-deck elevator that can reliably detect abnormalities in the ropes that drive the upper car and the lower car without requiring a special device. To provide an apparatus.

In order to achieve the above object, the present invention includes an upper car and a lower car that are movable in opposite directions in the car frame, driving means for driving the upper car and the lower car, the upper car and the car. Pulleys respectively provided in the lower car, sheaves of the driving means and a plurality of ropes spanning the pulleys, a plurality of sockets in which ends of these ropes are housed and fixed, and a plurality connected to these sockets Double deck elevator provided with a rod, a suspension plate into which these rods are inserted, a plurality of nuts screwed to the rod, and a plurality of springs disposed between these nuts and the suspension plate in the device, there to the nut on top of the opposite side of the nut of the spring, the vertical direction movable arranged, and the upper can be inserted a relief hole in each rod forming Is a detection plate that has, and a switch for detecting the displacement of the detection plate is provided, push the detection plate through the nut by extension of the spring with the abnormality of the rope, said by operating the switch rope A double deck elevator apparatus comprising a mechanism for detecting an abnormality in the rope, wherein the mechanism is provided at both ends of the rope .

  In the present invention configured as described above, when the rope is cut or loosened for some reason, the spring disposed at the end of the rope becomes unloaded, or the spring load is reduced to extend. In response to the extension of the spring, the detection plate is pushed up via the nut, and the switch detects the displacement of the detection plate, and the abnormality of the rope is detected. As a result, it is possible to detect anomalies in a plurality of ropes at a time by using a detection plate disposed on the top of the nut and a switch for detecting the displacement of the detection plate, and also an abnormality occurring in one rope. It can be detected reliably.

  Further, the present invention is characterized in that the detection plate is supported via a sliding means.

  In the present invention configured as described above, the detection plate supported via the sliding means is smoothly displaced when the spring is extended and pushed up through the nut due to the abnormality of the rope. Is detected.

  Furthermore, the present invention is characterized in that the detection plate is rotatably supported via a shaft provided at one end thereof.

  In the present invention configured as described above, the detection plate supported rotatably through the shaft is smoothly displaced when the spring is extended and pushed up through the nut due to the abnormality of the rope. An abnormal rope is detected.

  According to the present invention, when an abnormality occurs even in one of the plurality of ropes, this abnormality can be reliably detected, thereby ensuring passenger safety. Especially in double-deck elevators, the ropes that drive the upper and lower cars are short, so the inertia of the rope is small, and the time from rope abnormality to abnormality detection is shortened, enabling quick response to abnormalities. can do.

1 is a schematic overall configuration diagram of a double deck elevator to which the present invention is applied. It is a principal part schematic block diagram of the double deck elevator to which this invention is applied. 1 is a front view showing a first embodiment of a double deck elevator apparatus according to the present invention. It is a front view which shows the state which the spring extended | stretched by the rope abnormality and the detection board was pushed up. It is a flowchart which shows the process sequence of the double deck elevator apparatus which concerns on this invention. It is a front view which shows the 2nd Example of the double deck elevator apparatus which concerns on this invention. It is a front view which shows the 3rd Example of the double deck elevator apparatus which concerns on this invention.

  Embodiments of a double deck elevator apparatus according to the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, the double deck elevator device is connected to a car frame 2 that moves up and down in the hoistway 1, a main rope 3 that is connected to the car frame 2 at one end, and the other end of the main rope 3. A counterweight 4 that moves up and down in the road 1, a drive unit 6 that drives the main rope 3, is installed in a machine room 5 above the hoistway 1, an intermediate portion of the main rope 3 is wound around, and a machine room 5. There is a deflecting wheel 7 disposed in the vicinity of the driving device 6 and around which the main rope 3 is wound, and a control device 8 disposed in the machine room 5 and controlling the operation of the double deck elevator. The control device 8 is connected to the drive device 6 via a cable 9.

  As shown in FIG. 2, the car frame 2 includes an upper frame 2a, an intermediate frame 2b, a lower frame 2c, and a vertical frame 2d, and is erected on the hoistway 1 through guide members 10 arranged at four corners thereof. The guide rail 11 is guided. Further, the car frame 2 includes an upper car 12 and a lower car 13 that can move in opposite directions in the car frame 2, a guide rail 14 that guides the movement of the upper car 12 and the lower car 13, and the upper car 12. And a driving means 15 for driving the lower car 13.

  For example, the driving means 15 is stretched over a motor 151, a plurality of pulleys 152 provided at the lower part of each of the upper car 12 and the lower car 13, the sheave 151a of the motor 151, and the pulley 152, and one end thereof is placed on the upper frame 2a. A plurality of ropes 153 fixed to the intermediate frame 2b at the other end are provided.

  As shown in FIG. 3, the rope 153 includes, for example, five ropes 153a, 153b, 153c, 153d, and 153e. At the ends of these ropes 153a to 153e, the double deck elevator device A plurality of sockets 16 in which end portions of 153 are housed and fixed; a plurality of rods 18 connected to these sockets 16 via pins 17; a suspension plate 19 through which these rods 18 are inserted; A plurality of nuts 20a and 20b to be screwed together, a plurality of springs 21 disposed between the nut 20b and the suspension plate 19, and spring seats 22a and 22b disposed at the upper and lower portions of the spring 21 are provided. Yes. The hanging plate 19 is disposed on the upper frame 2a to which one end of the rope 153 is fixed and the intermediate frame 2b to which the other end is fixed. In the case shown in FIG. 3, the lengths of the five ropes 153a, 153b, 153c, 153d, and 153e are uniform, and the height positions of the rods 18 are set to be the same.

  As shown in FIG. 3, the double-deck elevator apparatus according to the present embodiment has a detection plate 23 that is disposed at the top of the nut 20a and is movable in the vertical direction, and a switch that detects the displacement of the detection plate 23. 24. The detection plate 23 is supported by support columns 25a and 25b erected on the suspension plate 20 via sliding means, for example, low friction sliding members 26a and 26b. Further, the detection plate 23 is formed with a relief hole 23a through which the upper portion of each rod 18 can be inserted.

  As shown in FIG. 1, when the car frame 2 is on the upper floor, the double deck elevator apparatus configured in this way has an upper car 12 and a lower car 13 in accordance with the distance between the landing floors H1. The distance between the upper car 12 and the lower car 13 is changed to H2 accordingly because the distance between the landing floors is changed to H2 in the case of the lower floor. Adjustment of the distance between the upper car 12 and the lower car 13 is performed by driving the rope 153 by the motor 151 and moving the upper car 12 and the lower car 13 up and down via the pulley 152. The intervals between the landing floors vary depending on the building conditions.

  Next, for example, a case where an arbitrary portion of the rope 153d is cut will be described. The spring 21 has a free length (L) when the load is 0 kg. However, when the load is applied as shown in FIG. 3, the spring height changes by the amount of deflection (X). The spring height dimension is (L−X). When the rope 153d is cut, the load applied to the spring 21 disappears, and the spring height dimension changes from (L-X) to (L) as shown in FIG. When the spring 21 is extended in this way, the nut 20a pushes up the detection plate 23 supported by the low friction sliding members 26a and 26b in the direction of the arrow 27, the detection plate 23 comes into contact with the detection switch 24, and the detection switch 24 is An abnormality detection signal is output. In response to this abnormality detection signal, as shown in FIG. 5, the control device 8 determines that an abnormality has occurred in the rope 153 that drives the upper car 12 and the lower car 13 in step S70, and the car frame 2 in step S71. Is moved to the nearest floor and the door is opened to open the door, and in step S72, the passenger is prompted to get out of the car by guidance broadcasting into the upper car 12 and the lower car 13 or guidance display. At this time, as shown in step S73, the car load detector (not shown) determines whether or not the car load has become equal to or less than the specified value Wo, that is, determines whether or not a passenger remains in the car. If the value is greater than or equal to the value Wo, guidance broadcasting or guidance display is continuously performed. On the other hand, when the load in the car becomes equal to or less than the specified value Wo, the door is closed and the operation of the elevator is stopped as step S74. Thereafter, in step S75, the abnormality is communicated to the outside, and a return operation is performed.

  According to the present embodiment, the detection plate 23 disposed on the upper portion of the nut 20a and the switch 24 that detects the displacement of the detection plate 23 can collectively detect abnormalities of the plurality of ropes 153a to 153e. At the same time, it is possible to reliably detect an abnormality occurring in one rope, thereby ensuring the safety of passengers. In particular, in a double deck elevator, since the rope 153 that drives the upper car 12 and the lower car 13 is short, the weight of the rope 153 is small, so that the inertial force of the rope pulled by the spring 21 is small and the rope is abnormal. It is possible to shorten the time until the abnormality is detected and to quickly respond to the abnormality. Further, since the detection plate 23 is supported via the low friction sliding members 26a and 26b which are sliding means, when the spring 21 is extended due to the abnormality of the rope 153 and pushed up via the nut 20a, the detection plate 23 is smoothly smoothed. Displacement, and thereby, the rope abnormality can be detected with certainty.

  In particular, in this embodiment, as shown in FIG. 2, the switches 24 are provided at both ends of the rope 153 that drives the upper car 12 and the lower car 13, so that when the rope is cut near one end, At the end, the weight of the rope 153 is larger than that at one end, so the inertial force of the rope pulled by the spring 21 is larger than that at one end, but at that end, Since the weight of the rope 153 is reduced and the inertial force of the rope pulled by the spring 21 is reduced, the time from the rope abnormality to the abnormality detection can be shortened, and a quick and reliable abnormality response can be realized.

  In the first embodiment described above, the case where an arbitrary portion of the rope 153 is cut has been described. However, even if the rope 153 is loosened for some reason, the spring 21 is extended, and this abnormality is corrected in the same procedure. Can be detected.

  Further, in this embodiment, it is determined whether or not a passenger remains in the car by the load in the car, but the remaining of such a passenger may be determined by another sensor such as an infrared sensor, for example. The remaining may be determined comprehensively from the detection results of the sensors.

  In addition, for example, when the passengers are disembarked in the upper car and the passengers are not yet disembarked in the lower car, that is, the passengers are disembarked in one car and the passengers are still disembarked in the other car. If it is not completed, it is possible to further increase safety by preventing the passenger from getting into the car again by configuring the completed car side to proceed to step S74 as needed. .

  In this embodiment, it is determined whether or not there are passengers remaining in the car in step S73. After it is determined that no passengers remain, the door is closed in step S74 and the elevator operation is stopped. In step S75, after it is determined in step 70 that an abnormality has occurred in the rope 153 that drives the upper car 12 and the lower car 13, step S75 is performed and then step S71 is performed. The subsequent flow may be performed, or step S75 and step S71 may be executed simultaneously, and then the flow after S71 may be performed. By configuring in this way, it is possible to quickly grasp that an abnormality has occurred in the rope 153 that drives the upper car 12 and the lower car 13, and this is effective for performing a quick return operation.

  Next, a second embodiment of the double deck elevator apparatus according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was mentioned above.

  In the double deck elevator apparatus according to the second embodiment, as shown in FIG. 6, the detection plate 23 is supported by support columns 25a and 25b erected on the suspension plate 20 via slide means, for example, rollers 26c and 26d. ing. Further, the lengths of the five ropes 153a, 153b, 153c, 153d, and 153e are not uniform, and the height position of the rod 18 is also different. Thus, even when the height positions of the rods 18 are different, the rope tensions of the ropes 153a to 153e are made substantially uniform by setting the height from the suspension plate 19 to the nut 20b substantially uniformly. Since the operation and effect are the same as those described above, description thereof will be omitted.

  As shown in the second embodiment, the present invention can be applied to a case where the lengths of the five ropes 153a to 153e are not uniform and the height positions of the rods 18 are different. Further, since the detection plate 23 is supported via rollers 26c and 26d as slide means, when the spring 21 is extended due to an abnormality of the rope 153 and pushed up via the nut 20a, the detection plate 23 is smoothly displaced. Therefore, it is possible to reliably detect a rope abnormality.

  Next, a third embodiment of the double deck elevator apparatus according to the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the thing equivalent to what was mentioned above.

  As shown in FIG. 7, in the double deck elevator apparatus in the third embodiment, the detection plate 23 is rotatably supported via a shaft 28 provided at one end thereof and between the support plate 25d. Yes.

  In the third embodiment, for example, when an arbitrary portion of the rope 153d is cut, the spring 21 becomes unloaded and the spring 21 extends. In response to this, the detection plate 23 is pushed up through the nut 20a, the detection plate 23 rotates around the shaft 28 and contacts the detection switch 24, and the detection switch 24 outputs an abnormality detection signal. Since subsequent operations and effects are the same as those described above, description thereof will be omitted.

  In the third embodiment, since the detection plate 23 is rotatably supported via the shaft 28, the spring 21 is extended due to the abnormality of the rope 153 and is smoothly displaced when pushed up via the nut 20a. As a result, the rope abnormality can be reliably detected.

  When the detection plate 23 is rotatably supported via the shaft 28, the distance between each rod 18 and the shaft 28 is different, so the rotation amount of the detection plate 23 differs depending on the rope in which an abnormality has occurred, but the switch 24 This can be done by optimizing the stroke.

DESCRIPTION OF SYMBOLS 1 Hoistway 2 Car frame 3 Main rope 4 Balance weight 5 Machine room 6 Drive device 7 Baffle 8 Control device 9 Cable 10 Guide member 11 Guide rail 12 Upper cage 13 Lower cage 14 Guide rail 15 Driving means 16 Socket 17 Pin 18 Rod 19 Suspension plate 20a, 20b Nut 21 Spring 22a, 22b Spring seat 23 Detection plate 23a Escape hole 24 Switch 25a, 25b Post 26a, 26b Low friction sliding material (sliding means)
26c, 26d roller (sliding means)
28 shaft 151 motor 152 pulley 153 (153a to 153e) rope

Claims (3)

An upper car and a lower car that are movable in opposite directions in the car frame, driving means for driving the upper car and the lower car, pulleys respectively provided in the upper car and the lower car, and the driving means A plurality of ropes spanning the sheave and the pulley, a plurality of sockets in which the ends of the ropes are housed and fixed, a plurality of rods connected to these sockets, and a suspension through which these rods are inserted In a double deck elevator apparatus comprising a plate, a plurality of nuts screwed to the rod, and a plurality of springs disposed between the nuts and the suspension plate,
In the upper portion of the nut opposite the spring relative to the nut, vertically movably disposed, and the respective rod top can be inserted escape holes that are formed detection plate, the detection A switch for detecting the displacement of the plate, and a mechanism for detecting the abnormality of the rope by operating the switch by pushing up the detection plate through the nut by the extension of the spring accompanying the abnormality of the rope , The double deck elevator apparatus, wherein the mechanism is provided at both ends of the rope .   The double deck elevator apparatus according to claim 1, wherein the detection plate is supported via a sliding means.   The double deck elevator apparatus according to claim 1, wherein the detection plate is rotatably supported via a shaft provided at one end thereof.

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