JP6445644B1 - Elevator abnormality detection system and elevator abnormality detection method - Google Patents

Abstract

It is an object of the present invention to provide an elevator abnormality detection system and an elevator abnormality detection method that can directly and accurately detect contact of a long object with a car or a counterweight.
An elevator abnormality detection system ES is arranged on a car 7 or a counterweight 8 that moves in an elevator hoistway 1 and detects a contact with a long object L in the hoistway 1. And a determination unit 9j that determines that the contact is abnormal when the contact exceeds a threshold value based on a detection signal from the contact detection unit 11.
[Selection] Figure 1

Description

  Embodiments described herein relate generally to an elevator abnormality detection system and an elevator abnormality detection method.

  When long-period vibration is generated by an earthquake or other vibration, a long object such as a cable resonates with the shaking of the building and the vibration becomes large, and an event of being caught by equipment in the hoistway can occur. If the elevator is operated in this state, there is a risk of a confinement accident in the user's car due to equipment damage, and it may take a long time to restore the elevator.

  In order to prevent such a situation, conventionally, as a long-body vibration control operation, a state in which long-period vibration, that is, vibration with small acceleration is generated for several tens of seconds by a vibration detection device installed in a building is detected, A technique for predicting and dealing with a shake amount of a long object is known.

  However, this technique is a technique that is set in the worst condition in which the maximum shake amount of the long object is generated in order to prevent the above-described accident. In other words, even if the amount of swing of a long object that does not hinder the operation of the elevator is actually shifted to the control operation that restricts the operation excessively, the service is reduced and the user is There is a concern of being left behind on the higher floors.

  As a countermeasure, it has been proposed to detect the vibration of the rope by using a camera installed on the car to detect the vibration of the rope that hangs the car. There is a drawback that it is accompanied.

JP 2007-197202 A

  The present invention has been made in view of the above circumstances, and provides an elevator abnormality detection system and an elevator abnormality detection method capable of directly and easily detecting contact of a long object to a car or a counterweight. The issue is to provide.

  An elevator abnormality detection system according to an embodiment of the present invention includes a contact detection unit that is disposed on a car or a counterweight that moves in an elevator hoistway and detects contact with a long object in the hoistway, and contact detection. And a determination unit that determines that the contact is abnormal based on a detection signal from the unit.

The typical side view explaining the composition of the elevator abnormality detection system concerning a 1st embodiment. 1 is a schematic plan view showing a configuration of an elevator abnormality detection system according to a first embodiment. The perspective view explaining that a long thing touches a cage in a 1st embodiment. The perspective view which shows the contact detection part arrange | positioned at the cage | basket | car in 1st Embodiment. The perspective view which shows that a long thing contacted the contact detection part arrange | positioned at the cage | basket | car in 1st Embodiment. In 1st Embodiment, (a) is a side view explaining the state which the protrusion part of a contact detection part has extended, (b) demonstrates the state which the protrusion part of the contact detection part is pressed and retracted. Side view. The flowchart figure of 1st Embodiment. The fragmentary perspective view which shows the modification of 1st Embodiment. The partial perspective view explaining a contact detection part in a 2nd embodiment. In 2nd Embodiment, (a) is a side view explaining the state which the protrusion part of a contact detection part has extended, (b) demonstrates the state which the protrusion part of the contact detection part is pressed and retracted. Side view. The partial perspective view explaining a contact detection part in a 3rd embodiment (state where a long thing is not contacting). The partial perspective view explaining a contact detection part in a 3rd embodiment (state in which a long thing is contacting). In 3rd Embodiment, (a) is a side view explaining the state which the protrusion part of a contact detection part has extended, (b) demonstrates the state which the protrusion part of the contact detection part is pressed and retracted. Side view. The typical side view explaining the structure of the elevator abnormality detection system which concerns on 4th Embodiment. The typical side view explaining the structure of the elevator abnormality detection system which concerns on 4th Embodiment. The flowchart figure of 4th Embodiment. The typical side view explaining the structure of the elevator abnormality detection system which concerns on 5th Embodiment. The typical side view explaining the modification of 1st-5th embodiment.

  Hereinafter, an elevator abnormality detection system and an elevator abnormality detection method according to embodiments will be described with reference to the accompanying drawings. In the following description, an example in which a contact detection unit that detects contact with a long object in the hoistway is arranged in an elevator car (car) will be described. In the second and following embodiments, the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.

[First Embodiment]
(Overall explanation)
First, the first embodiment will be described. As shown in FIGS. 1 to 8, the elevator abnormality detection system ES according to the present embodiment is disposed on a car 7 or a counterweight that moves in the hoistway 1 of the elevator E, such as a cable in the hoistway 1. Based on a detection signal from the contact detection unit 11 (see FIGS. 4 to 6) that detects contact with the long object L and a detection signal from the contact detection unit 11, a determination unit that determines that the contact exceeds the threshold value is abnormal. 9j.

  Further, the elevator E is provided with a hoisting machine M having a sheave in a machine room on the hoistway or an installation area provided in the hoistway. The main rope 3 is hung on the sheave, and the hoisting machine M is driven by a command from the control unit 9, and the sheave 7 rotates to move the car 7 and the counterweight 8 connected to the main rope 3. It can be moved up and down.

  Here, the elevator E includes the control unit 9 that controls the hoisting machine M, and the determination unit 9j constitutes a part of the control unit 9. And the elevator E is provided with the calculating part 10 which arithmetically processes the detection signal received from the contact detection part 11, and transmits to the control part 9 (refer FIGS. 1-3).

  Further, the elevator E includes a moving cable 6 that supplies power to the car 7 via the moving cable relay device 5 and a compen- sion rope 4 that connects the car 7 and the counterweight 8 in the hoistway 1. In the present embodiment, the main rope 3, the compensation rope 4, the moving cable 6, and the governor rope (not shown) that connects the governor device that detects the overspeed of the car 7 and the car 7 are the long objects L described above. Yes.

  And the contact detection part 11 is installed by the screw | thread or the fitting structure, for example in the cage | basket | car side part which faces the elongate objects L, such as the main rope 3, the compensation rope 4, and the moving cable 6. FIG.

  With this configuration, the long object L starts long-period vibration due to an earthquake or other vibration, and the long object L comes into contact with the contact detection unit 11, thereby detecting the contact of the long object L with the car 7. 11 is detected, a detection signal is transmitted to the calculation unit 10, and further transmitted from the calculation unit 10 to the control unit 9 and received by the determination unit 9j.

(Contact detector)
As shown in FIG. 3, the car 7 includes a vertical frame 7f and an arm 7a fixed to the vertical frame 7f. In the present embodiment, the position of the arm 7a that directly faces the long object L (the arm outer surface portion on the long object side, and passes through the long object L at right angles to the side of the car when no vibration is generated. The contact detection unit 11 is disposed at a position on the plane).

  As shown in FIG. 4 to FIG. 6, the contact detection unit 11 holds the cylindrical projection 11p that protrudes outward through the arm 7a and the projection 11p from the inside of the arm 7a so as to be able to advance and retract. A socket-shaped receiving portion 11s (see FIG. 6). The receiving portion 11s urges the protruding portion 11p toward the outside of the arm by an urging member (compression coil spring or the like). The contact detection unit 11 includes a fixing member 11i that fixes the receiving portion 11s to the arm 7a and supports the forward and backward movement of the protruding portion 11p on the outside of the arm 7a.

  The receiving portion 11s is such that a long object L or the like comes into contact with the protruding portion 11p and the movement of the protruding portion 11p is a predetermined value or more (for example, pushed into a predetermined depth or more). When the pushing speed is equal to or higher than a predetermined speed, or the number of repeated contacts within a predetermined time exceeds a predetermined value), the fact is transmitted from the contact detection unit 11 to the calculation unit 10. ing. In addition, since it is the judgment part 9j that judges whether it is abnormal, it is also possible for the contact detection part 11 to make this predetermined value 0 and to detect all the contacts.

(Function, effect)
The operation and effect of this embodiment will be described below with reference to the flowchart shown in FIG.

  When an earthquake or other vibration occurs in the elevator E, the long object L starts long-period vibration in the hoistway 1 (step S1).

  When the long object L contacts (abuts) the protrusion 11p of the contact detection unit 11, the protrusion 11p biased toward the outer side of the arm retreats toward the inner side of the arm (FIGS. 5 and 6B). reference). As a result, if the contact is equal to or greater than the predetermined value (step S2), a detection signal is transmitted from the contact detection unit 11 to the calculation unit 10. Then, arithmetic processing is performed by the arithmetic unit 10 (step S3), data after the arithmetic processing is transmitted to the control unit 9, and the determination unit 9j receives this. Then, the determination unit 9j determines whether or not the threshold set in the determination unit 9j is exceeded (step S4).

  In the case of Yes in step S4, it is determined that the determination unit 9j is abnormal, and based on the determination, the control unit 9 issues a command to shift to the control operation according to the threshold (step S5). As a result, the stage of performing the evacuation operation (the operation for stopping the car 7 at the nearest floor), the operation suspension, or the restoration operation is sequentially determined with time and executed. As a result, it is possible to evacuate passengers (users) quickly, prevent damage to the elevator, and thus resume elevator operation early.

In the case of No in step S4, the determination unit 9j determines that there is no abnormality and normal operation is continued (step S6).
According to the present embodiment, the elevator abnormality detection system ES that can directly and accurately detect the contact of the long object L with the car 7 is realized, and the actual long object L when the long-period vibration occurs is realized. It is possible to reliably grasp the magnitude of the runout. Therefore, when the vibration of the long object L is not long-period vibration, it can be set so as not to be abnormal, and even if the amount of vibration of the long object L is sufficient to prevent the elevator operation. Excessive restriction of operation is avoided.

  Further, based on the determination by the determination unit 9j, the control unit 9 can promptly shift to an appropriate control operation of the elevator.

  In the above description, the contact detection unit 11 has been described as an example. However, as shown in FIG. 8, a plurality of contact detection units 11 may be arranged. As a result, even if the direction in which the long object L swings is deviated to an arbitrary direction other than the direction facing the car 7 (the direction facing the long object L), the long object L is moved to any adjacent contact detection unit 11. When the object L abuts, it becomes possible to grasp the magnitude of the actual vibration of the long object L when the long-period vibration is generated, and depending on the position of the contact detection unit 11 where the detection signal is output, It is possible to grasp which position on the car 7 the scale has contacted.

[Second Embodiment]
Next, a second embodiment will be described. As shown in FIGS. 9 and 10, the present embodiment includes a connecting body 20 that presses and operates the plurality of contact detectors 11 by contacting a long object L as compared to the first embodiment.

  Specifically, compared to the first embodiment, the car 7 includes a connecting member support member base 26 fixed to the upper side of the arm 7a by screwing, welding, or the like and extending toward the outside of the arm, and a connecting member support member base. 26 further includes a connecting member supporting member movable portion 27 that is hung down by a hinge or the like by a hinge or the like on the front end side of 26, and the connecting member 20 is fixed to the outside of the arm. The connecting body support member base portion 26 and the connecting body support member movable portion 27 are disposed in each contact detection unit 11.

  And the cage | basket | car 7 is provided with the above-mentioned connection body 20 extended in the elongate shape along the arm part by which the some contact detection part 11 is arrange | positioned. The connecting body 20 is fixed to the long object side of each connecting body support member movable portion 27, and the connecting body 20 and each connecting body support member moving portion 27 are configured to rotate integrally. Yes.

  When the long object L is not in contact with the connecting body 20, the tip of the projecting portion 11p is not pressed (see FIGS. 9 and 10A).

  When an earthquake or other vibration occurs in the elevator, the long object L starts long-period vibration in the hoistway 1.

  When the long object L contacts (contacts) the connecting body 20 and presses the connecting body 20 to the inner side of the arm (see FIG. 10B), the connecting body supporting member movable portion 27 is turned to the inner side of the arm. Move around. As a result, the connecting body supporting member movable portion 27 presses the tip of the protruding portion 11p, and the protruding portion 11p moves away. As in the first embodiment, when the contact of the long object L with the connecting body 20 is greater than or equal to a predetermined value, a detection signal is transmitted from the contact detection unit 11 to the calculation unit 10. Then, the data calculated by the calculation unit 10 is transmitted to the control unit 9, and the determination unit 9j receives the data.

  Regarding this contact, the determination unit 9j determines whether or not the contact exceeds a threshold set in the determination unit 9j.

  If the judgment part 9j judges that it is an abnormal contact, the control part 9 will issue the command which transfers to the control operation according to a threshold value. As a result, the stage of performing the evacuation operation (the operation for stopping the car 7 at the nearest floor), the operation suspension, or the restoration operation is sequentially determined and executed as time passes. If the determination unit 9j determines that the contact is not abnormal, normal operation is continued.

  According to this embodiment, even if the swinging direction of the long object L is deviated in an arbitrary direction that is not directly facing the car 7, the long object L reliably comes into contact with the connecting body 20, so that long-period vibration is generated. It is possible to reliably grasp the actual swinging size of the long object L at the time.

  Further, even if a large impact is applied to the connecting body 20 from the long object L and the connecting body 20 moves to the inside of the arm, the plurality of projecting portions 11p positioned on the back side of the connecting body 20 support the protrusions. The impact transmitted to the part 11p is dispersed. Therefore, the contact detection unit 11 is not easily damaged.

[Third Embodiment]
Next, a third embodiment will be described. As shown in FIGS. 11 to 13, in this embodiment, the distribution of the detection signal from each contact detection unit 11 depends on the contact position between the connecting body 30 and the long object L as compared with the second embodiment. Distribution.

  And the cage | basket | car 7 is provided with the above-mentioned connection body 30 extended in elongate shape along the arm part in which the some contact detection part 11 is arrange | positioned. The connecting body 30 includes a protruding portion plate portion 30b that comes into contact with the protruding portion 11p from the back side, and a rectangular long plate portion 30c that protrudes from the protruding portion plate portion 30b toward the outside of the arm. .

  Further, the car 7 includes an elongated connecting body lower support member 32 that supports the connecting body 30 slidably from below and a connecting body upper support member 34 that guides the upper side of the connecting body 30. The connecting member lower support member 32 and the connecting member upper support member 34 are both plate-like members, and both are fixed to the arm 7a on the proximal end side, and on the distal end side, the connecting member 30 moves to the outside of the arm. Is bent toward the long object plate 30c side. An opening 36 is formed between the connecting member lower support member 32 and the connecting member upper support member 34 for projecting the long object plate 30c.

  When the long object L is not in contact with the connecting body 30, it is connected by the biasing force of the projecting portion 11 p of the contact detection unit 11 and the stopper function by the connecting body lower support member 32 and the connecting body upper support member 34. The body 30 stops at a position that is the outermost side of the arm (see FIGS. 11 and 13A).

  When an earthquake or other vibration occurs in the elevator, the long object L starts long-period vibration in the hoistway 1.

  When the long object L contacts (abuts) the long object plate 30c of the connecting body 30 and presses the connecting body 30 (see FIGS. 12 and 13B), the connecting body 30 faces the inner side of the arm. Move. As a result, the protruding portion plate 30b of the connecting body 30 presses the protruding portion 11p, and the protruding portion 11p moves away. As in the first and second embodiments, if the contact is greater than or equal to a predetermined value, a detection signal is transmitted from the contact detection unit 11 to the calculation unit 10.

  Then, the data calculated by the calculation unit 10 is transmitted to the control unit 9, and the determination unit 9j receives the data. The determination unit 9j determines whether or not a threshold set in the determination unit 9j has been exceeded.

  If the judgment part 9j judges that it is an abnormal contact, the control part 9 will issue the command which transfers to the control operation according to a threshold value. As a result, the stage of performing the evacuation operation (the operation for stopping the car 7 at the nearest floor), the operation suspension, or the restoration operation is sequentially determined and executed as time passes. If the determination unit 9j determines that the contact is not abnormal, normal operation is continued.

  According to the present embodiment, in addition to the same effects as those of the second embodiment, depending on the location where the long object L contacts the connecting body 30, the protrusion 11 p of each contact detection unit 11 is pushed (movable amount (push-in). Depth) and pushing speed are different. Accordingly, a distribution occurs in the detection signal from each contact detection unit 11. Therefore, the distribution of the detection signal from each contact detection unit 11 is a distribution according to the contact position between the connecting body 30 and the long object L, so that the long object L contacts the position of the connecting body 30. There is an effect that it can be determined.

[Fourth Embodiment]
Next, a fourth embodiment will be described. In this embodiment, the position (height position) of the car is taken into consideration.

  As shown in FIGS. 14 and 15, the distance between the supports of the long objects L changes depending on the position of the car 7 (for example, in the case of the moving cable 6, the position of the car 7 changes to change the position of the moving cable 6. The distance between the support position and the lower end position changes). For this reason, even when the shaking of the building is equivalent, the amount of shake of the long object L varies depending on the position of the car 7. Considering this, in the present embodiment, a value corresponding to the position (height position) of the car 7 is set as the threshold value as compared with the first to third embodiments.

  As shown in FIG. 16, in this embodiment, when an earthquake or other vibration occurs in the elevator, the long object L starts long-period vibration in the hoistway 1 (step S11).

  When the long object L comes into contact (contact) with the protrusion 11p of the contact detector 11, the protrusion 11p biased toward the outer side of the arm retracts toward the inner side of the arm. As a result, if the contact is greater than or equal to the predetermined value (step S12), a detection signal is transmitted from the contact detection unit 11 to the calculation unit 10. Then, arithmetic processing is performed by the arithmetic unit 10 (step S13), data after the arithmetic processing is transmitted to the control unit 9, and the determination unit 9j receives this. Then, the determination unit 9j determines whether or not the contact exceeds the threshold value at the car position (car height position) at the time of occurrence of the contact (step S14).

  In the case of Yes in step S14, the determination unit 9j determines that there is an abnormality, and based on the determination, the control unit 9 issues a command to shift to the control operation according to the threshold value at the car position at the time of contact occurrence. (Step S15). As a result, as a result, the stage of any one of the evacuation operation (operation that stops the car 7 at the nearest floor), the operation suspension, and the recovery operation is sequentially determined and performed with time. At that time, the influence of the contact with the car 7 due to the vibration of the long object L is calculated by calculating the increase / decrease transition of the shake amount based on the change of the distance from the support end of the long object L due to the change of the car position. It is possible to drive to stop at the evacuation floor in the shortest time.

  In the case of No in step S14, the determination unit 9j determines that there is no abnormality, and normal operation is continued (step S16).

  In this embodiment, as described above, it is determined whether or not there is an abnormality by using the threshold value corresponding to the position of the car 7, so that the accuracy of abnormality detection and control operation is further improved compared to the first to third embodiments. Can do.

[Fifth Embodiment]
Next, a fifth embodiment will be described. As shown in FIG. 17, in this embodiment, the elevator abnormality detection system is provided with a reporting means 40 that reports a detection signal and car position information to the maintenance service center 42 as compared with the fourth embodiment.

  Thus, the damage level of the long object L can be estimated by analyzing the detection signal and the position information of the car at the maintenance service center. Therefore, inspection and repair can be performed at an appropriate time, and an accident due to damage to the long object L can be prevented. Moreover, the site | part which the elongate object L contacted can be pinpointed previously by the cage position information when a contact is detected.

  In the above description of each embodiment, the example in which the contact detection unit 11 is disposed in the car 7 has been described. However, as illustrated in FIG. 18, the contact detection unit 11 is disposed in the counterweight 8. The same effect can be achieved. In this case, the contact detection unit disposed on the counterweight 8 may wirelessly transmit that the contact has occurred to the determination unit 9j, thereby newly connecting an electric cable to the counterweight 8. There is no need.

  Further, from the contact detection unit 11, the step of arranging the contact detection unit 11 that detects contact with the long object L in the hoistway 1 on the car 7 or the counterweight 8 that moves in the elevator hoistway 1. Based on this detection signal, a step of determining that the contact exceeds the threshold may be performed abnormally, so that the contact of the long object to the car 7 or the counterweight 8 can be directly and accurately performed. An elevator abnormality detection method that can be detected well is realized.

  In this case, a plurality of contact detection units may be arranged, and the threshold value may be set according to at least one of a load applied to the hoisting machine, a load amount, and a car position.

  Although some embodiments have been described above, these embodiments are presented as examples, and the scope of the invention is not intended to be limited to them. These 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 invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 1 ... Hoistway, 3 ... Main rope, 4 ... Compensation rope, 5 ... Moving cable relay apparatus, 6 ... Moving cable, 7 ... Car, 7a ... Arm, 7f ... Vertical frame, 8 ... Counterweight, 9 ... Control Part, 9j ... judgment part, 10 ... calculation part, 11 ... contact detection part, 11i ... fixing member, 11p ... projecting part, 11s ... receiving part, 20 ... connecting body, 26 ... connecting body support member base, 27 ... connecting Body supporting member movable part, 30 ... connecting body, 30b ... plate part for projecting part, 30c ... plate part for long object, 32 ... lower supporting member for connecting body, 34 ... upper supporting member for connecting body, 36 ... opening, 40 ... reporting means, 42 ... maintenance service center, E ... elevator, ES ... elevator abnormality detection system, M ... winding machine, L ... long object.

Claims (6)

A plurality of contact detectors that are arranged on a car or a counterweight that moves in the elevator hoistway, and detects contact with a long object in the hoistway;
Based on a detection signal from the contact detection unit, a determination unit that determines that the contact is abnormal when the contact exceeds a threshold value;
An elevator abnormality detection system comprising: a connecting body capable of pressing the plurality of contact detection units by contacting the long object . 2. The elevator abnormality detection system according to claim 1 , wherein a distribution of detection signals from each contact detection unit is a distribution according to a contact position between the connecting body and the long object. The elevator abnormality detection system according to claim 1, wherein when the determination unit determines the abnormality, a command to shift to a control operation according to the threshold value is issued. The elevator abnormality detection system according to claim 3 , wherein a value corresponding to a position of the car or the counterweight is set as the threshold value. The elevator abnormality detection system according to claim 4 , further comprising a reporting unit that reports the detection signal and positional information of the car or the counterweight to a maintenance service center. A step of arranging a plurality of contact detectors for detecting contact with a long object in the hoistway on a car or a counterweight moving in the hoistway of the elevator;
Based on detection signals from a plurality of the contact detection units, and determining that the contact exceeds a threshold value, an abnormality ,
An elevator abnormality detection method , wherein the threshold value is set according to at least one of a load applied to a hoisting machine, a load amount, a car position, and a counterweight position .

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