JP5969076B1 - elevator - Google Patents

Abstract

An elevator that attenuates rope swings in the event of strong winds or earthquakes is provided. According to an embodiment, an elevator includes a first damping device, a second damping device, a third damping device, and a fourth damping device. The first vibration damping device vibrates a rope hitch device that connects the car and the main rope when a swing of the main rope on the car side is detected. The second vibration damping device vibrates the rope hitch device that connects the counterweight and the main rope when a swing of the main rope on the counterweight side is detected. The third vibration damping device vibrates a rope hitch device that connects the car and the compen- sion rope when a swing of the compen- sion rope on the car side is detected. The fourth vibration damping device vibrates the rope hitch device that connects the counterweight and the compen- sion rope when the swing of the compen- sion rope on the counterweight side is detected. [Selection] Figure 1

Description

  Embodiments of the present invention relate to an elevator that attenuates rope sway.

  In a general elevator, a hoisting machine is installed at the upper part of the elevator hoistway, and a main rope is wound around the hoisting machine. A passenger car is suspended from one end of the main rope, and a counterweight is suspended from the other end of the main rope. On the other hand, a compensatory is installed in the lower part of the hoistway, and a compenand rope is wound around the compensatory. One end of the compensation rope is connected to the lower part of the car, and the other end of the compensation rope is connected to the lower part of the counterweight. This compen- sive rope has a role of canceling the weight change of the main rope when the car and the counterweight are raised and lowered in the hoistway.

  By the way, the natural frequency of the building is decreasing with the increase in the number of buildings. Further, the natural frequency of the main rope and the compen- sion rope (hereinafter collectively referred to simply as a rope as necessary) is determined by the length, mass and tension of the rope. As a result, when the building is shaken by a strong wind or an earthquake, the natural frequency of the rope approaches the natural frequency of the building and the swing of the rope increases, and the rope collides with equipment and protrusions in the hoistway, There is a possibility of tangling. If the rope gets entangled with equipment or protrusions in the hoistway, an abnormality is detected and the car is stopped, causing a passenger to be trapped in the car.

JP 2006-193256 A

  Therefore, there is a technique for reducing shaking by applying a load to the rope, but in that case, there is a problem that an excessive load is applied to the building or the rope, which may cause breakage or deterioration.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide an elevator that attenuates the swinging of a rope when a strong wind or an earthquake occurs.

  According to the embodiment for achieving the above object, the elevator includes a first damping device, a second damping device, a third damping device, and a fourth damping device. The first vibration damping device vibrates a rope hitch device that connects the car and the main rope when a swing of the main rope on the car side is detected. The second vibration damping device vibrates the rope hitch device that connects the counterweight and the main rope when a swing of the main rope on the counterweight side is detected. The third vibration damping device vibrates a rope hitch device that connects the car and the compen- sion rope when a swing of the compen- sion rope on the car side is detected. The fourth vibration damping device vibrates the rope hitch device that connects the counterweight and the compen- sion rope when the swing of the compen- sion rope on the counterweight side is detected.

1 is an overall view showing a configuration of an elevator according to an embodiment. BRIEF DESCRIPTION OF THE DRAWINGS (a) The side view which shows the state at the time of normal of the elevator by one Embodiment, (b) The side view which shows the state at the time of operation | movement of a vibration apparatus. The flowchart which shows operation | movement of the elevator by one Embodiment.

  The structure of the elevator by one Embodiment of this invention is demonstrated with reference to FIG.

  In the elevator 1 according to this embodiment, a hoisting machine 2-1 and a deflecting sheave 2-2 are installed at the upper part of a hoistway in a building, and a main rope 3 is wound around the hoisting machine 2-1 and the deflecting sheave 2-2. It is hung. A car 4 is suspended from one end of the main rope 3, and a counterweight 5 is suspended from the other end of the main rope 3. On the other hand, the compensatory 6-1 and 6-2 are installed in the lower part of the hoistway, and the compen- sion rope 7 is wound around the compensatory 6-1 and 6-2. One end of the compensation rope 7 is connected to the lower part of the car 4, and the other end of the compensation rope 7 is connected to the lower part of the counterweight 5.

  Further, in the upper part of the hoistway, a first shaking detection sensor 8 that detects the magnitude of shaking of the main rope 3 on the car 4 side and a second that detects the magnitude of shaking of the main rope 3 on the counterweight side. A shake detection sensor 9 is installed. When the elevator 1 does not have a machine room at the upper part of the hoistway, the first shake detection sensor 8 is installed in the vicinity of the hoisting machine 2-1, preferably directly below, and the second shake detection sensor 9 is the deflecting sheave 2 -2, preferably just below. When the elevator 1 has a machine room at the upper part of the hoistway, the first shake detection sensor 8 is installed in the vicinity of the hoist 2-1 in the machine room, and the second shake detection sensor 9 is Installed near the deflector sheave 2-2 in the machine room.

  In addition, at the lower part of the hoistway, a third shaking detection sensor 10 that detects the magnitude of the swing of the compen- sion rope 7 on the car 4 side and a fourth shaking that detects the magnitude of the swing of the compen- sion rope 7 on the counterweight side. A detection sensor 11 is installed. The third shake detection sensor 10 is installed in the vicinity of the compensation 6-1, preferably immediately above, and the fourth shake detection sensor 11 is installed in the vicinity of the compensation sieve 6-2, preferably immediately above.

  By installing the first shake detection sensor 8 to the fourth shake detection sensor 11 at the positions as described above, the car 4 can be installed without being obstructed by devices and members in other hoistways. Even if the counterweight 5 moves up and down, detection is not impossible, and high-precision swing detection can be performed.

  The first shake detection sensor 8 includes a light projector 8a that emits a light beam such as infrared rays, and a light receiver 8b that receives the light beam emitted from the light projector 8a. The light projector 8a and the light receiver 8b are installed so that the optical axis is formed at the normal position of the main rope 3 on the car 4 side, and emitted from the light projector 8a when the main rope 3 on the car 4 side is not shaken. When the light beam is blocked by the main rope 3 and the main rope 3 on the side of the car 4 is shaken, the light beam is received by the light receiver 8b at periodic time intervals. Here, the time interval when the light beam is periodically received varies depending on the magnitude of the swing of the main rope 3 on the car 4 side.

  Similarly, the second shake detection sensor 9 includes a projector 9a that emits a light beam such as an infrared ray, and a light receiver 9b that receives the light beam emitted from the projector 9a. The light projector 9a and the light receiver 9b are installed so that the optical axis is formed at a normal position of the main rope 3 on the counterweight 5 side, and are emitted from the light projector 9a when the main rope 3 on the counterweight 5 side is not shaken. When the light beam is blocked by the main rope 3 and the main rope 3 on the counterweight 5 side is shaken, the light beam is received by the light receiver 9b at periodic time intervals. Here, the time interval when the light beam is periodically received differs depending on the magnitude of the swing of the main rope 3 on the counterweight 5 side.

  Similarly, the third shake detection sensor 10 includes a projector 10a that emits a light beam such as infrared rays, and a light receiver 10b that receives the light beam emitted from the projector 10a. The projector 10a and the light receiver 10b are installed so that the optical axis is formed at the normal position of the compen- sation rope 7 on the car 4 side, and are emitted from the light projector 10a when the compen- sion rope 7 on the car 4 side is not shaken. When the light beam is blocked by the compensation rope 7 and the compensation rope 7 on the side of the car 4 is shaken, the light receiver 10b receives the light beam at periodic time intervals. Here, the time interval when the light beam is periodically received varies depending on the magnitude of the swing of the compensator 7 on the car 4 side.

  Similarly, the fourth shake detection sensor 11 includes a projector 11a that emits a light beam such as an infrared ray, and a light receiver 11b that receives the light beam emitted from the projector 11a. The projector 11a and the light receiver 11b are installed so that the optical axis is formed at the normal position of the compen- sation rope 7 on the counterweight 5 side, and are emitted from the projector 11a when the compen- sion rope 7 on the counterweight 5 side is not shaken. When the light beam is blocked by the compensation rope 7 and the compensation rope 7 on the counterweight 5 side is shaken, the light beam is received by the light receiver 11b at periodic time intervals. Here, the time interval when the light beam is periodically received varies depending on the magnitude of the swing of the compensator 7 on the counterweight 5 side.

  The car 4 and the main rope 3 are connected by a rope hitch device 12, and a vibration damping device 13 connected to the first shake detection sensor 8 is fixed to the rope hitch device 12.

  The configuration of the rope hitch device 12 and the vibration damping device 13 fixed thereto will be described with reference to FIG. FIG. 2A shows a state when the main rope 3 is not shaken.

  In this embodiment, the main rope 3 includes two ropes 3a and 3b, and the rope hitch device 12 includes a movable plate 121 through which the ropes 3a and 3b are inserted and movable in the lateral direction (long axis direction), and a movable plate. 121, spring members 122a and 122b attached to the ropes 3a and 3b on the side of the car 4 through which 121 is inserted.

  A vibration damping device 13 is fixed to the surface of the movable plate 121 opposite to the car 4 side. The vibration damping device 13 includes vibration devices 13a and 13b fixed to positions having a predetermined distance in the lateral direction (long axis direction) from the position of the ropes 3a and 3b. When the vibration of the main rope 3 having a size exceeding the preset allowable range is detected by the first vibration detection sensor 8, the vibration devices 13a and 13b move the movable plate 121 inserted through the ropes 3a and 3b in the lateral direction. The vibration of the ropes 3a and 3b is attenuated by the vibration.

  FIG. 2B shows a state in which the movable plate 121 is vibrated by the vibration devices 13a and 13b and the ropes 3a and 3b are moved accordingly.

  Further, the counterweight 5 and the main rope 3 are connected by a rope hitch device 14, and a vibration damping device 15 connected to the second shake detection sensor 9 is fixed to the rope hitch device 14. The rope hitch device 14 is a movable plate 141 (not shown) through which the ropes 3a and 3b are respectively inserted and movable in the lateral direction (long axis direction). Hereinafter, the members in the rope hitch device 14 and the vibration damping device 15 are also described. And the spring members 142a and 142b attached to the ropes 3a and 3b on the counterweight 5 side through which the movable plate 141 is inserted, and on the surface opposite to the counterweight 5 side of the movable plate 141, A vibration damping device 15 having vibration devices 15a and 15b is fixed. When the vibration of the main rope 3 having a size exceeding the preset allowable range is detected by the second vibration detection sensor 9, the vibration devices 15a and 15b move the movable plate 141 inserted through the ropes 3a and 3b. By vibrating in the direction, the swinging of the ropes 3a and 3b is attenuated.

  The car 4 and the compen- sion rope 7 are connected by a rope hitch device 16, and a vibration damping device 17 connected to the third shake detection sensor 10 is fixed to the rope hitch device 16. The rope hitch device 16 is a movable plate 161 (not shown) through which the compensation rope 7 is inserted and movable in the lateral direction (long axis direction). The same applies to each member in the rope hitch device 16 and the vibration damping device 17. ) And a spring member 162 attached to the compen- sion rope 7 on the side of the car 4 through which the movable plate 161 is inserted. On the surface opposite to the car 4 side of the movable plate 161, vibration devices 17a and 17b are provided. The vibration damping device 17 having the above is fixed. When the vibration of the compensator 7 having a size exceeding the preset allowable range is detected by the third vibration detection sensor 10, the vibration devices 17 a and 17 b move the movable plate 161 inserted through the compen- sion rope 7 in the lateral direction. The vibration of the compen- sion rope 7 is attenuated.

  Further, the counterweight 5 and the compen- sion rope 7 are connected by a rope hitch device 18, and a vibration damping device 19 connected to the fourth shake detection sensor 9 is fixed to the rope hitch device 18. The rope hitch device 18 is a movable plate 181 (not shown) through which the compensation rope 7 is inserted and movable in the lateral direction (long axis direction). The same applies to each member in the rope hitch device 18 and the vibration damping device 19. ) And a spring member 182 attached to the compen- sation rope 7 on the counterweight 5 side through which the movable plate 181 is inserted, and vibration devices 19a and 19b are provided on the surface opposite to the counterweight 5 side of the movable plate 181. The vibration damping device 19 having the above is fixed. Then, when the vibration of the compen- sion rope 7 having a magnitude exceeding the preset allowable range is detected by the fourth vibration detection sensor 11, the vibration devices 19a and 19b move the movable plate 181 inserted through the compen- sion rope 7 in the lateral direction. The vibration of the compen- sion rope 7 is attenuated.

  In the elevator 1 configured as described above, a process executed between the shake detection sensor and the vibration control device connected to each other will be described with reference to the sequence diagram of FIG. Here, a process executed between the first shake detection sensor 8 and the vibration damping device 13 will be described as an example.

  First, when the swing of the main rope 3 is detected by the first swing detection sensor 8 (S1), it is determined based on the detection result whether the magnitude of the swing is within a preset allowable range. (S2). As a result of the determination, when it is determined that the magnitude of the swing of the main rope 3 exceeds the allowable range (“NO” in S2), the vibration detection sensor 8 generates a vibration suppression operation start signal, and the vibration suppression device 13 (S3).

  When the vibration suppression device 13 receives the vibration suppression operation start signal (S4), the vibration suppression operation by the vibrations of the vibration devices 13a and 13b is started so as to cancel the vibration of the main rope 3 (S5).

  In the vibration detection sensor 8, after transmitting the vibration suppression operation start signal, it is determined at predetermined time intervals whether the magnitude of the vibration of the main rope 3 is within the allowable range (S6). When the determination is made (“YES” in S6), a vibration suppression operation stop signal is generated and transmitted to the vibration suppression device (S7).

  When the vibration suppression device 13 receives the vibration suppression operation stop signal (S8), the vibration suppression operation due to the vibrations of the vibration devices 13a and 13b is stopped (S9).

  Similar processing is executed in the second vibration detection sensor 9 and the vibration damping device 15, the third vibration detection sensor 10 and the vibration damping device 17, and the fourth vibration detection sensor 11 and the vibration damping device 19.

  According to the above embodiment, the occurrence of shaking is monitored for each of the main rope on the car side, the main rope on the counterweight side, the compen- sion rope on the car side, and the compen- sion rope on the counterweight side. When excessive shaking occurs, the corresponding rope hitch device can be vibrated to cancel and attenuate the shaking.

  In the above-described embodiment, after the information detected by the first shake detection sensor 8 to the fourth shake detection sensor 11 is transmitted to an existing elevator control panel (not shown) and the operation by the vibration damping device is started. If the swinging of the rope is not attenuated even after the predetermined time has elapsed, an instruction may be output from the elevator control panel so as to stop the raising / lowering of the car. By controlling in this way, it is possible to ensure the safety of the users in the car and to prevent the equipment in the elevator from being damaged. Here, when the information detected by the first shake detection sensor 8 to the fourth shake detection sensor 11 is transmitted to the elevator control panel, either wireless transmission or wired transmission may be used.

  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. The novel embodiment can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. This embodiment and its modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 2-1 ... Hoisting machine, 2-2 ... Warp sheave, 3 ... Main rope, 3a, 3b ... Rope, 6-1, 6-2 ... Compensation, 7 ... Compen rope, 8, 9, DESCRIPTION OF SYMBOLS 10, 11 ... Shake detection sensor, 8a, 9a, 10a, 11a ... Light projector, 8b, 9b, 10b, 11b ... Light receiver, 12, 14, 16, 18 ... Rope hitch device, 13, 15, 17, 19 ... Control Vibrating device, 13a, 13b, 15a, 15b, 17a, 17b, 19a, 19b ... vibrating device, 121, 141, 161, 181 ... movable plate, 122a, 122b, 142a, 142b, 172, 182 ... spring member

Claims (1)

A first shaking detection sensor for detecting the shaking of the main rope on the car side;
When a swing of the main rope on the car side is detected by the first swing detection sensor, a first control that vibrates a rope hitch device that connects the car and the main rope so as to attenuate the swing. A vibration device;
A second shaking detection sensor that detects shaking of the main rope on the counterweight side;
When a swing of the main rope on the counterweight side is detected by the second swing detection sensor, a second control that vibrates a rope hitch device that connects the counterweight and the main rope so as to attenuate the swing. A vibration device;
A third shake detection sensor for detecting a shake of a compen- sion rope on the car side;
When the third swing detection sensor detects a swing of the compen- sion rope on the car side, a third control that vibrates a rope hitch device that connects the car and the compen- sion rope so as to attenuate the swing. A vibration device;
A fourth shake detection sensor for detecting a shake of the compen- sive rope on the counterweight side;
When the second swing detection sensor detects a swing of the compen- sion rope on the counterweight side, a fourth control that vibrates a rope hitch device that connects the counterweight and the compen- sion rope so as to attenuate the swing. An elevator comprising a vibration device.

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