JP5951685B2 - Elevator car work notification device - Google Patents

Description

  Embodiments described herein relate generally to a notification device during work on an elevator car.

  It is necessary to prevent the worker from colliding with the counterweight during the manual lifting operation on the car during the elevator maintenance inspection work on the car. In the prior art, a danger notification device for providing a detection switch in the hoistway for detecting the approach of the car and the counterweight during maintenance inspection operation based on the operation of the manual operation switch on the car and notifying the operator of the danger Is installed on the car, and the danger control device is informed by the elevator control panel based on the input of the detection signal from the detection switch during the maintenance inspection operation based on the manual operation switch.

Japanese Patent Laid-Open No. 7-237839

  In the prior art, as the detection switch, a contact type in which the switch is operated by a switch operation cam is applied. For example, when the wipe, which is the amount of movement of the switch operating cam from when the contact starts to contact until it completely closes, decreases the contact pressure of the contact and causes a detection failure. As a result, there is a possibility that the notification is not reliably performed. For this reason, maintenance of the operation part of a detection switch, such as wipe adjustment, is needed at the time of work on a cage | basket | car. Moreover, the contact type switch generates an operation sound during operation.

  The present invention has been made in view of the above, and it is an object of the present invention to provide a notification device during work on an elevator car that can perform reliable notification.

The elevator on-car operation notification device according to the embodiment includes a car, a counterweight, a detection unit, a notification unit, and a control unit. The cage | basket | car is provided so that raising / lowering is possible. The counterweight is provided so that it can be raised and lowered in a direction opposite to the raising and lowering of the car. The detecting means detects the relative position where the car and the counterweight approach each other without contact. The detection means has a proximity switch. The proximity switch detects the presence of the detection plate. Proximity switches are respectively provided at two positions on the weight guide rail. The proximity switch is disposed at a position just before the counter weight that descends with respect to the rising car and a position just before the counter weight that rises with respect to the descending car. The detection plate is attached to the counterweight. The detection plate is provided so as to pass the position facing the proximity switch when the counterweight is raised and lowered. The notification means is arranged in the car. The control means operates the notification means based on the detection by the detection means when the car is moved up and down during the work on the car. The operating means is arranged on the car and operates the raising and lowering of the car. The control means permits the detection by the detection means and the operation of the notification means during the raising / lowering operation by the operation means, and invalidates the detection by the detection means or the operation of the notification means in cases other than the raising / lowering operation by the operation means.

FIG. 1 is a diagram illustrating a schematic configuration example of an elevator and an on-car notification device according to the embodiment. FIG. 2 is a diagram illustrating an operation flow of the on-car work notification device according to the embodiment.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, the following embodiment is an illustration and the range of invention is not limited to them. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art or those that are substantially the same.

  FIG. 1 is a diagram illustrating a schematic configuration example of an elevator and an on-car notification device according to the embodiment. The elevator 10 includes a car 11, a counterweight 12, a main rope 13, and a hoisting machine 14, and further includes a deflecting sheave 15, a control device 16, a pair of car guide rails 17, and a pair of weights. And a guide rail 18 for use. In the embodiment, the car 11, the counterweight 12, the main rope 13, the car guide rail 17, and the weight guide rail 18 are disposed in the hoistway 19. Further, the hoisting machine 14, the deflecting sheave 15, and the control device 16 are arranged in the machine room 20. The hoisting machine 14, the deflecting sheave 15, and the control device 16 may be disposed in the hoistway 19 without providing the machine room 20.

  The car 11 is for passengers to get on and off. The car 11 is arranged between a pair of car guide rails 17 and is moved up and down along the car guide rails 17 via one or more guide devices (not shown) provided for each car guide rail 17. The hoistway 19 is moved up and down.

  The counterweight 12 moves up and down in the hoistway 19 in conjunction with the raising and lowering of the car 11. The counterweight 12 is disposed between a pair of weight guide rails 18 provided in parallel with the car guide rails 17, and one or more guide devices (not shown) are provided for each weight guide rail 18. ) Through the weight guide rail 18 so as to be movable up and down. The counterweight 12 has a weight set so as to be balanced with the car 11 with the hoisting machine 14 sandwiched when the car 11 has a predetermined load capacity (for example, about 0 to 1/2 with respect to the maximum load capacity). Yes.

  The main rope (rope) 13 is one or more ropes connecting the car 11 and the counterweight 12. The main rope 13 is wound around the main sheave 14 a and the deflecting sheave 15 of the hoisting machine 14. The main rope 13 has one end connected to the upper part in the vertical direction of the car 11 and the other end connected to the upper part in the vertical direction of the counterweight 12 so that the car 11 and the counterweight 12 are in opposite directions. Raise and lower traction.

  The hoisting machine 14 rotates to wind up the main rope 13 wound around the main sheave 14 a, and changes the relative position of the car 11 and the counterweight 12 in the ascending / descending direction, thereby moving the car 11 into the hoistway 19. It is lifted up and down. The hoisting machine 14 is electrically connected to the control device 16, and drive control is performed by electric power supplied via the control device 16.

  The control device 16 controls the operation of the elevator 10 and is electrically connected to an operating device (not shown) in the car 11 by a tail cord 24. At least the hoisting machine is operated based on the operation of the operating device. 14 is controlled to control the raising / lowering operation of the car 11. In the embodiment, the control device 16 serves as control means for the on-car work notification device.

  The on-car work notification device includes the above-described car 11, the counterweight 12, and the control device (control device) 16, and further includes a detection device 21 and a notification device 22.

  The detecting means 21 is provided on the counterweight 12 side and on the weight guide rail 18 side for guiding the lifting and lowering of the counterweight 12. An angle 21a made of a metal plate or the like is fixed to the weight guide rail 18 side. The proximity switch 21b is attached to the angle 21a. The angle 21a and the proximity switch 21b attached to the angle 21a are provided at two positions on the weight guide rail 18, respectively. Each proximity switch 21b is electrically connected to the control device 16 by a wiring 21c. On the other hand, a detection plate 21d is attached to the counterweight 12 side. The detection plate 21d is provided so as to pass through the position facing each proximity switch 21b when the counterweight 12 is raised or lowered. The detection plate 21d operates each proximity switch 21b in a non-contact manner when passing through the position facing each proximity switch 21b. The operated proximity switch 21 b inputs an operation signal to the control device 16. The proximity switch 21b is, for example, an inductive proximity switch that detects the presence of a metal that is the detection plate 21d, a capacitive proximity switch that detects the presence of a metal and a non-metallic object that is the detection plate 21d, or a detection plate 21d. There are an ultrasonic proximity switch that detects an acoustic reflection object, a photoelectric proximity switch that detects the presence of an object that is the detection plate 21d, and the like.

  Further, in the detection means 21, the angle 21 a and the proximity switch 21 b attached to the angle 21 a are arranged on the weight guide rail 18 at a relative position where the car 11 and the counterweight 12 move up and down in opposite directions. Thus, the counter weight 12 that descends with respect to the ascending car 11 is provided at a position in front of each other and the counter weight 12 that ascends with respect to the descending car 11 is disposed in front of each other. The position in front of each other is, for example, a position where the car 11 and the counterweight 12 are separated by a predetermined distance in the vertical direction. The predetermined distance varies depending on the moving time in which the car 11 and the counterweight 12 are relatively close to each other, but a worker on the car 11 is sufficiently retracted from between the relatively close car 11 and the counterweight 12. It is set as the distance that can earn possible time.

  The notification means 22 performs a notification operation for an operator riding on the car 11, for example, there is a notification device by sound such as a buzzer, and a notification device by light such as a lamp. There may be. This notification means 22 is provided in a car upper box 23 installed on the car 11. The car upper box 23 is a connection box to which a tail cord 24 connected to the control device 16 is connected, and the tail cord 24 and the notification means 22 are connected to each other. Therefore, the control device 16 inputs a notification signal to the notification means 22 of the car top box 23 via the tail cord 24.

  The car top box 23 provided with the notification means 22 is provided with an operation means 25. The operating means 25 is used by an operator on the car 11 to operate the car 11 to move up and down, and is electrically connected to the control device 16 via the tail cord 24. Therefore, the control device 16 receives an operation signal from the operation means 25 of the car top box 23 via the tail cord 24. Although not shown in the figure, the operation means 25 and the operation device (not shown) in the car 11 are provided with a changeover switch for switching between the normal operation mode and the inspection operation mode. The normal operation mode is a normal operation mode in which the elevator 11 can be moved up and down by the operating device and a passenger is placed. The inspection operation mode can be operated by the operation means 25 to move the car 11 up and down. This is an operation mode in which the car 11 is moved up and down at a low speed.

  Next, operation | movement of the alerting | reporting apparatus at the time of the work on the cage concerning embodiment is demonstrated. FIG. 2 is a diagram illustrating an operation flow of the on-car work notification device according to the embodiment. In the embodiment, a case will be described in which an operation is performed on the car 11 in which an operator rides on the car 11 and performs an inspection operation.

  First, the operator switches to the inspection operation mode in which the raising / lowering of the car 11 can be operated by the operation means 25. That is, the control device 16 determines whether or not the operation of the car 11 can be performed in the inspection operation (step ST1). If it is determined in step ST1 that the car 11 can be operated in the inspection operation (step ST1: Yes), the control device 16 allows the operation means 25 to move the car 11 up and down. Thereby, the inspection operation is started (step ST2). If it is determined in step ST1 that the operation of the car 11 is not possible in the inspection operation (step ST1: No), the control device 16 disables the raising / lowering operation of the car 11 by the operation means 25.

  And the control apparatus 16 determines whether the detection board 21d of the counterweight 12 operated the proximity switch 21b in the process in which the car 11 moves up and down by the inspection operation (step ST3). That is, the control device 16 determines whether the relative position where the car 11 and the counterweight 12 approach each other is detected by the detection unit 21. In step ST3, it is determined that the proximity switch 21b is operated by the operation signal of the proximity switch 21b being input to the control device 16 (step ST3: Yes), and the operation signal of the proximity switch 21b is sent to the control device 16. If no power is input, it is determined that the proximity switch 21b is not operated (step ST3: No).

  In step ST3, when the operation signal of the proximity switch 21b is input (step ST3: Yes), a notification signal is input from the control device 16 to the car upper box 23 via the tail cord 24 (step ST4). By receiving this notification signal, a buzzer as the notification means 22 in the car box 23 is sounded for several seconds (step ST5). Here, a few seconds when the buzzer is sounded is a time during which the worker on the car 11 can sufficiently evacuate between the car 11 and the counterweight 12 that are relatively approaching, for example, the proximity switch 21b. After the operation signal is input to the control device 16, it is a time until the car 11 and the counterweight 12 come relatively close to each other. This time is preset and stored in the control device 16. Alternatively, the several seconds when the buzzer is sounded may be a time from when the detection plate 21d of the counterweight 12 operates another proximity switch 21b until the operation signal of the proximity switch 21b is input to the control device 16. .

  As described above, the elevator on-car work notification device according to the embodiment is connected to the car 11 of the elevator 10 that can be lifted up and down, and the car 11 is connected to the car 11 via the main rope 13 and is contrary to the lifting of the car 11. Counter weight 12 provided so as to be able to move up and down in the direction to be moved, detection means 21 for detecting the relative position where the car 11 and the counter weight 12 approach each other in a non-contact manner, notification means 22 disposed in the car 11, and the car 11 When raising and lowering the car 11 in the upper work, the control device 16 that operates the notification means 22 based on the detection by the detection means 21 is provided.

  According to the elevator on-car operation notification device, when the car 11 is lifted or lowered on the car 11, the notification means 22 is operated based on the detection by the detection means 21 so that the car 11 and the counterweight 12 approach each other. By notifying the operator of this fact, the worker knows the approach of the counterweight 12, so that the situation where the worker collides with the counterweight 12 can be suppressed. In particular, according to the elevator on-car operation notification device, the detecting means 21 detects the relative position where the car 11 and the counterweight 12 approach each other in a non-contact manner. It is possible to avoid a situation in which a failure does not occur and a situation in which an operation signal is not input due to this contact failure, and a notification signal for operating the notification means 22 cannot be input, and a reliable notification can be performed. Moreover, since the detection means 21 detects the relative position where the car 11 and the counterweight 12 approach each other without contact, maintenance of the operation part of the detection switch such as wipe adjustment is unnecessary as in the case of the contact type. And the generation of operation noise can be prevented.

  Further, in the elevator on-car operation notification device according to the embodiment, the control device 16 preferably operates the notification unit 22 for a predetermined time based on detection by the detection unit 21.

  According to this elevator on-car work notification device, the notification means 22 can be operated for a predetermined time to notify the worker of the time when the counterweight 12 is approaching. Can be increased.

  In addition, in the elevator on-car operation notification device according to the embodiment, there is an operating means 25 that is arranged on the car 11 and operates to raise and lower the car 11, and the control device 16 raises and lowers the car 11 by the operating means 25. At the time of operation, it is preferable to operate the notification means 22 based on detection by the detection means 21.

  In other words, the control device 16 allows the operation signal, which is detection by the detection means 21, to be input when the operation means 25 raises or lowers the car 11. The input of the operation signal is invalidated. Alternatively, the control device 16 allows the notification signal to be input to the notification unit 22 during the raising / lowering operation of the car 11 by the operation unit 25, and the notification signal to the notification unit 22 other than the operation of raising / lowering the cage 11 by the operation unit 25. Invalidate incoming calls. According to this elevator car work time notification device, the operation means 25 operates the notification means 22 in the work on the car 11, so that the passenger is in an operation other than the work on the car 11 such as the normal operation of the car 11. It is possible to prevent the passenger from feeling uncomfortable without operating the notification means 22.

  Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. This embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. This embodiment and its modifications are included in the scope of the present invention and the gist thereof, and are also included in the invention described in the claims and the equivalent scope thereof.

  10 elevator, 11 car, 12 counter weight, 16 control device (control means), 21 detection means, 21a angle, 21b proximity switch, 21c wiring, 21d detection plate, 22 notification means, 23 car top box, 24 tail code, 25 Operation means

Claims (2)

An elevator car provided so as to be capable of ascending and descending, a counterweight provided so as to be capable of ascending and descending in a direction opposite to the ascending and descending of the car, and detection means for detecting a relative position where the car and the counterweight approach each other in a non-contact manner. A notification means arranged on the car, a control means for operating the notification means based on detection by the detection means when raising and lowering the car in the work on the car, and arranged on the car, Operating means for operating up and down, and the detecting means has a proximity switch for detecting the presence of a detection plate attached to the counterweight, and the proximity switch is a vertical position of the weight guide rail. The counter weight provided at each of the two locations and descending with respect to the ascending car passes the position just before the counter weight and the descending car Said counterweight rises disposed and the position of the front, to pass each other with respect to the detection plate, the provided so as to pass through the position facing the proximity switch when the lifting of the counterweight, wherein the control means In the lifting operation by the operation means, the detection by the detection means and the operation of the notification means are allowed. In cases other than the lifting operation by the operation means, the detection by the detection means or the operation of the notification means is invalidated. An elevator notification device for work on an elevator car.   The said control means operates the said alerting | reporting means for the predetermined time based on the detection by the said detection means, The alerting | reporting apparatus at the time of work on the elevator car of Claim 1 characterized by the above-mentioned.

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