JP2009208896A - V-belt cut detection device for elevating machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a V-belt cut detection device for an elevating machine capable of automatically detecting cut of the V-belt early. <P>SOLUTION: The V-belt cut detection device used for an escalator device operated by transmitting rotating force of a motor via the plurality of V-belts 28 is provided with a plurality of light emitting-light receiving elements 46, 48 provided corresponding to the plurality of V-belts 28 and detecting cut of the V-belts 28 in a non-contact state, and with an escalator control board 36 for issuing warning to a remote information center 38 when a belt cut signal is input from the light receiving elements 48. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator V-belt cutting detection device, and more particularly to a V-belt cutting detection device used in an elevator that operates by transmitting the rotational power of a motor through a plurality of V-belts.

  Conventionally, in buildings such as department stores, shopping centers, hospitals, etc., escalators and elevators are installed to facilitate the movement of customers and patients between floors. Usually, an escalator is for a user to move to another floor while standing on each step by moving up and down a number of steps in a step shape.

  In general, a driving force for moving each step of the escalator is given by a motor. Among them, the rotational power of the motor is first transmitted to the speed reducer via a plurality of V belts, the sprocket is rotated by the rotational power output from the speed reducer, and the step chain connected to each step by this sprocket Some types are designed to rotate. Therefore, in this type of escalator, the cutting of the V-belt leads to the escalator being stopped.

  Here, in Patent Document 1, in a continuously variable transmission in which a V-belt is stretched between a drive pulley and a driven pulley, the position of the movable sheave among the fixed sheave and the movable sheave constituting the driven pulley is monitored by a sensor. Thus, there is disclosed a V-belt abnormality detecting device that can detect abnormality of the V-belt at an initial stage.

JP 2006-153128 A

  However, in the V-belt power transmission type escalator as described above, unlike the continuously variable transmission pulley as described above, both the driving pulley on the motor side and the driven pulley on the reduction gear side are of the belt groove fixed type. Since a general pulley is used, the detection method described in Patent Document 1 cannot detect the cutting of the V belt.

  An object of the present invention is to provide a V-belt cutting detection device for an elevator that can automatically detect cutting of a V-belt at an early stage.

  The present invention relates to a V-belt cutting detection device used in an elevator that operates by transmitting the rotational power of a motor via a plurality of V-belts, and is provided corresponding to the plurality of V-belts. And a plurality of detecting means for detecting the disconnection in a non-contact manner, and a reporting means for reporting to the remote information center when a belt cutting signal is input from the detecting means.

  In the V-belt cutting detection device for an elevator according to the present invention, the detection means includes a light-emitting element that emits light toward the V-belt and a light-receiving element that is provided to face the light-emitting element across the V-belt. Alternatively, it may be configured by a proximity sensor that is disposed in close proximity to the V-belt.

  The elevator V-belt cutting detection device according to the present invention further includes control means for controlling the operation of the elevator, and the control means cuts the second V-belt after the detection means cuts the first V-belt. When it is detected, it is preferable to reduce the operating speed of the elevator or to stop the elevator.

  Furthermore, the elevator V-belt cutting detection device according to the present invention can be suitably used in an escalator or a hydraulic elevator.

  According to the elevator V-belt cutting detection device according to the present invention, when the V belt is monitored by detecting means provided corresponding to each of the plurality of V belts, and it is detected that even one V belt has been cut. Since the reporting means is designed to report to the remote information center, the escalator maintenance staff can go to the site early to install the new belt, and the elevator will not be able to operate. Can be prevented.

  Embodiments according to the present invention will be described below in detail with reference to the accompanying drawings. In this description, specific shapes, materials, numerical values, directions, and the like are examples for facilitating the understanding of the present invention, and can be appropriately changed according to the application, purpose, specification, and the like.

FIG. 1 is a configuration diagram schematically showing an escalator device 1 in which an elevator V-belt cutting detection device 10 according to an embodiment of the present invention is incorporated. The escalator device 1 has a well-known configuration and includes a number of steps 2 that are connected to two loop-shaped step chains (not shown) at both ends in the width direction. In step 2, each step chain is rotationally driven by two driven sprockets 3 so as to go up in the direction of arrow 4 while moving around in a stepped manner between the entrance and exit of the escalator or in the direction of arrow 5 It moves down in the direction.

  A motor 16, which is a drive source for the escalator device 1, is installed in the machine room 11 below the floor plate 14 of the entrance / exit 12 at the top of the escalator device 1. FIG. 2 is a plan view showing the machine room 11 as viewed from above with the floor plate 14 removed. As shown in FIGS. 1 and 2, a driving pulley 20 having three belt grooves is fixed to the rotating shaft 18 of the motor 16.

  On the other hand, a speed reducer 22 is installed on the side closer to the driven sprocket 3 with respect to the motor 16. A driven pulley 26 having three belt grooves is fixed to the input shaft 24 protruding from the side surface of the speed reducer 22. Three V belts 28 are stretched between the driving pulley 20 on the motor 16 side and the driven pulley 26 on the reduction gear 22 side with a predetermined tension. Thereby, the rotational power of the motor 16 is transmitted to the speed reducer 22 through the three V belts.

  The speed reducer 22 decelerates the rotational power transmitted to the input shaft 24 by an internal gear train, and then outputs it to the output shaft 30 that penetrates the speed reducer 22 and protrudes from both side surfaces. Drive sprockets 32 are fixed to both ends of the output shaft 30, respectively. A drive chain 34 is wound around the drive sprocket 32 and the driven sprocket 3. Thereby, the rotational power output from the speed reducer 22 is transmitted to the driven sprocket 3 via the drive sprocket 32 and the drive chain 34, and each step 2 moves.

  Further, an escalator control panel (reporting means and control means) 36 is installed in the machine room 11. The escalator control panel 36 has a function of controlling the overall operation of the escalator device 1, and when an abnormality such as a failure occurs in the escalator device 1, the remote information center 38 (FIG. 3) (See also) The escalator control panel 36 includes a memory that stores a control program to be described later, and a CPU that reads and executes the control program from the memory. However, in the escalator control panel 36, similar control may be realized by a hardware electric circuit instead of software control.

  Between the driving pulley 20 on the motor 16 side and the driven pulley 26 on the speed reducer 22 side, a V belt cutting detector (detecting means) 40 for detecting the cutting of the V belt 28 in a non-contact manner is disposed. . 3 is a cross-sectional view taken along line AA in FIG. The V-belt cutting detector 40 has a main body 42 fixed on the floor surface 11 a of the machine room 11. The main body 42 is formed of a rigid material such as metal so that it does not break even if the V-belt 28 cut during rotation collides. The main body 42 has a substantially U-shaped cross section or side surface, and a belt passage 44 formed of a rectangular opening is formed between the upper arm 42a and the lower arm 42b.

  Three V-belts 28 stretched below the drive pulley 20 and the driven pulley 26 pass through the belt passage 44 of the V-belt cutting detector 40. Three light emitting elements 46 corresponding to the three V belts 28 are arranged on the lower surface 43 a of the upper arm portion 42 a of the main body 42. On the other hand, on the upper surface 43b of the lower arm portion 42b of the main body portion 42, three light receiving elements 48 are arranged at positions facing the light emitting elements 46 with the V belt 28 interposed therebetween. The light emitting element 46 is adapted to irradiate light 50 toward the V-belt 28 by being supplied with electric power from the escalator control panel 36. On the other hand, the light receiving element 48 cannot normally receive the light 50 because it is blocked by the V-belt 28. However, as shown in FIG. When the light no longer exists, the light 50 from the light emitting element 46 is received and a belt cutting signal is output to the escalator control panel 36.

  The end portions on the belt path side of the light emitting element 46 and the light receiving element 48 are preferably disposed so as to be slightly deeper than the lower surface 43a of the upper arm portion 42a and the upper surface 43b of the lower arm portion 42b. Thereby, damage to the light emitting element 46 and the light receiving element 48 due to the collision of the V belt 28 cut during rotation can be avoided. Further, the vertical arrangement relationship between the light emitting element 46 and the light receiving element 48 may be reversed.

  Next, the operation of the V-belt cutting detection device 10 constituted by the escalator control panel 36 and the V-belt cutting detector 40 will be described with reference to FIG. FIG. 5 is a flowchart showing processing of a control program executed by the CPU in the escalator control panel 36. This control program is set to be executed every predetermined time during the operation of the escalator device 1.

  First, it is determined whether or not one V-belt 28 has been cut (step S10). As shown in FIG. 3, when none of the three V belts 28 is cut, the light 50 emitted from each light emitting element 46 is blocked by the V belt 28 and does not reach the light receiving element 48. The cutting of the belt 28 is not detected (NO in step S10). In other words, it is detected that the V-belt 28 is not cut, and the processing is ended as it is.

On the other hand, as shown in FIG. 4, when one V-belt 28 is cut and light 50 emitted from the light-emitting element 46 is received by one light-receiving element 48, the belt-cut detection signal is sent from the light-receiving element 48 to the escalator. It is output to the control panel 36 (YES in step S10). In response to this belt cut detection signal, the escalator control panel 36 issues a notification to the remote information center 38 to notify that one V-belt 28 has been cut (step S12).

  Upon receiving this notification, the maintenance staff of the escalator management company is dispatched to the escalator installation site, and when a new V-belt 28 is installed, the reporting status is reset on the escalator control panel 36 by the maintenance staff's operation ( In step S14, YES), the process ends.

  On the other hand, after one V-belt 28 is cut, the load applied to the remaining two V-belts 28 is increased, but the rotational power of the motor 16 can be sufficiently transmitted to the speed reducer 22. Continue. At that time, until the new V belt is installed by the maintenance staff (NO in step S14), it is monitored whether or not the second V belt 28 is cut (step S16), and the loop is repeatedly executed (step S16). S14, S16).

  When the second V-belt 28 is detected to be disconnected before the new V-belt is mounted (YES in step S16), the remote information center 38 is notified that the second V-belt 28 has been disconnected. (Step S18). At the same time, in order to prevent the remaining load of the one V belt 28 from further increasing and cutting it, the rotational speed of the motor 16 is decreased to reduce the operating speed of the escalator device 1, or Alternatively, the motor 16 is stopped and the escalator device 1 is deactivated (step S20). Thereafter, the system waits until a new V-belt is attached by the maintenance staff in this state (step S22), and when the new V-belt 28 is attached and the alarm state is reset on the escalator control panel 36 (step S22). YES), the process ends.

  As described above, according to the V-belt cutting detection device 10 of the present embodiment, the V-belt 28 is monitored by the light emitting / receiving elements 46 and 48 provided corresponding to the three V-belts 28, respectively. Since the escalator control panel 36 reports to the remote information center 38 when it is detected that even one has been cut, the escalator maintenance staff will promptly return to the site for V belt replacement. It is possible to prevent the situation where the escalator device 1 cannot be operated.

  The elevator V-belt cutting detection device according to the present invention is not limited to the above-described embodiment, and various modifications and improvements can be made without departing from the technical scope of the present invention.

For example, in the above description, the escalator device 1 using three V-belts 28 has been described as an example. It can also be applied to a device. In the case of four or more V-belts, the same control as described above is possible, and in the case of two V-belts, the processing of steps S10, S12, S20 and S22 in FIG. 5 may be executed.

In the above description, the V-belt cutting detection means is composed of a light emitting / receiving element.
The presence or absence of the V belt 28, that is, the cutting of the V belt 28 may be detected by a proximity sensor 49 such as a capacitance type that is disposed close to and opposed to the V belt 28 like the belt cutting detector 41. In this case, there is an advantage that the V belt cutting detector can be reduced in size.

  Further, in the above description, the V-belt cutting detection device 10 has been described as being applied to the escalator device 1 which is one of the elevators. However, the V-belt cutting detection device according to the present invention is applied to a hydraulic elevator device. Also good. In this case, the V-belt cutting detection device is used to detect the cutting of the V-belt for transmitting the rotational power of the motor to the hydraulic pump.

It is a schematic block diagram of the escalator apparatus incorporating the V belt cutting | disconnection detection apparatus which is one Embodiment of this invention. It is the top view which looked at the machine room where a motor etc. are installed from the upper part. It is the sectional view on the AA line in FIG. FIG. 4 is a cross-sectional view similar to FIG. 3 showing a state where one V-belt is cut. It is a flowchart which shows the process performed in an escalator control panel. It is sectional drawing which shows the modification of V belt detector.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Escalator apparatus, 2 steps, 3 Followed sprockets, 10 V belt cutting | disconnection detection apparatus, 11 Machine room, 11a Floor surface, 12 Entrance / exit, 14 Floor board, 16 Motor, 18 Rotating shaft, 20 Drive pulley, 22 Reducer, 24 Input Shaft, 26 driven pulley, 28 V belt, 30 output shaft, 32 drive sprocket, 34 drive chain, 36 escalator control panel, 38 remote information center, 40, 41 V belt cutting detector, 42 main body, 42a upper arm, 42b Lower arm part, 43a lower surface, 43b upper surface, 44 belt path, 46 light emitting element, 48 light receiving element, 49 proximity sensor, 50 light.

Claims (5)

A V belt cutting detection device used in an elevator that operates by transmitting rotational power of a motor through a plurality of V belts,
A plurality of detection means provided corresponding to a plurality of V-belts and detecting the cutting of the V-belts in a non-contact manner;
An elevator V-belt cutting detection device, comprising: a reporting unit that reports to a remote information center when a belt cutting signal is input from the detection unit. In the V belt cutting | disconnection detection apparatus for elevators of Claim 1,
The detecting means comprises a light emitting element that emits light toward the V belt, and a light receiving element that is provided opposite to the light emitting element with the V belt interposed therebetween. In the V belt cutting | disconnection detection apparatus for elevators of Claim 1,
The detecting means comprises a proximity sensor disposed in close proximity to and opposite to the V-belt, and a V-belt cutting detection device for elevators. In the V belt cutting | disconnection detection apparatus for elevators as described in any one of Claim 1 to 3,
Control means for controlling the operation of the elevator is further provided. When the detection means detects that the second V-belt has been cut after the first V-belt has been cut, is the control means reduced in operating speed of the elevator? Or a V-belt cutting detection device for an elevator, wherein the operation of the elevator is stopped. In the V belt cutting | disconnection detection apparatus for elevators as described in any one of Claim 1 to 4,
Elevator is an escalator or hydraulic elevator, V-belt cutting detection device for elevator.

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