JP2011006219A - Speed governor rope rocking detecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rocking detecting device of an elevator speed governor rope for easily performing installation work from above a car.SOLUTION: This rocking detecting device is used together with a vibration damper having a mounting bracket fixed to the car, a spring seat fixed to the speed governor rope and a compression spring arranged between the spring seat and itself, and is arranged between the mounting bracket and the spring seat, and has an actuator and a detector, and detects relative displacement exceeding a predetermined value between the car and the speed governor rope, and is supported by an inserting-mutual fitting structure for elastically holding an installation arm for supporting the actuator or the detector between the spring seat and the compression spring. The installation work can be easily performed from above the car.

Description

  The present invention relates to a governor rope swing detection device, and more particularly to a governor rope swing detection device useful for a malfunction prevention device for an elevator governor.

  In the elevator, in order to stop the car when the car speed becomes excessive, a speed governor is provided to connect the speed governor rope to the car and detect that the speed governor rope has reached the excessive speed. Yes. A vibration damper using a spring is provided between the governor rope and the car in order to absorb a normal swing of the car, that is, a speed change accompanying traveling. In such an elevator, when a passenger in the car swings the car in the vertical direction and swings exceeding the vibration control capacity of the vibration damper are given, the swing is adjusted via the governor rope. It is transmitted to the speed machine as an excessive speed, and the excessive speed detection switch of the governor may be activated. This state is a malfunction of the governor, and until the operation of the overspeed detection switch or the rope gripping mechanism is released, the passenger is trapped in the car and other passengers cannot use the elevator.

  In order to prevent such a malfunction of the governor due to the swing of the car, the vibration damper is provided with a swing detector that detects relative displacement between the car and the governor rope. When the value exceeds a certain value, a swing detection signal indicating the swing of the car is output. Based on this swing detection signal, the passenger in the car is advised to stop the swing by an alarm or audio broadcast, or the car is decelerated or stopped via the control panel. Thereafter, if the passenger stops swinging, the car can be driven to the next floor at a low speed.

  In an elevator car sway detector used in such an elevator governor malfunction prevention device, the sway detector has an actuator connected to the upper elastic body of the damper and the lower elastic body. It fixes to the member to connect, a detection element is fixed to a cage | basket | car, this detection element is operated with an actuator, and relative displacement between a cage and a governor rope is detected by the position of this actuator. (For example, refer to Patent Document 1).

JP 2003-146549 A

  In such an elevator governor malfunction prevention device, the vibration damper is often attached to the upper end of the car to be coupled to the car. In that case, when installing the governor rope swing detection device, the fixing position of the member to be connected to the lower part of the lower elastic body is lower than the upper end part of the car. In the prone position, it is necessary to get out of the ceiling of the car and work with the arms extended downward, and the fastening work of nuts and the like becomes extremely difficult.

  When working on the side of the car, it is necessary to work with a safety stand, and it takes a long time to install the governor rope swing detection device for preventing the malfunction of the elevator governor. End up. In addition, since the space between the side surface of the car and the wall of the building is generally as narrow as possible, the assembling work itself in this space may not be possible. For this reason, when performing the operation | work which attaches the governor rope rocking | fluctuation detection apparatus for the malfunction prevention apparatus of an elevator governor to the existing elevator, it is desired that it can work with a comparatively easy attitude | position from a cage | basket | car.

  Accordingly, an object of the present invention is to provide a speed governor rope swing detection device that can be used in a malfunction prevention device for an elevator speed governor that can be easily assembled from a car.

  According to this invention, it is used with a vibration damper provided with a mounting bracket fixed to the car, a spring seat fixed to the governor rope, and a compression spring provided between the mounting bracket and the spring seat. Provided between the mounting bracket and the spring seat and provided with an actuator and a detector operated by the actuator, the predetermined value between the car and the governor rope exceeded A swing detection device for detecting relative displacement, wherein at least one of the actuator and the detector is elastically supported between the spring seat and the compression spring via an attachment arm. A governor rope swing detection device is provided.

  According to the governor rope swing detection device of the present invention, the assembling work can be easily performed on the car.

It is a schematic side view of the elevator which attached the governor rope rocking | fluctuation detection apparatus of this invention. It is an expansion schematic side view of the governor rope rocking | fluctuation detection apparatus of the elevator governor of FIG. It is an expansion schematic partial side view of the lower spring seat of the vibration damper of FIG. It is a top view of the lower actuator attachment arm of the governor rope rocking | fluctuation detection apparatus of the elevator governor of FIG. FIG. 5 is a side view of the lower actuator mounting arm along the line VV in FIG. 4.

  According to the present invention, the nut of the governor rope swing detecting device is fixed to the vibration damper using the spring, and the mounting arm is elastically supported between the spring and the spring seat so that the nut can be operated from above the car. It was possible to fix without fastening such as. The structure and fixing method will be described below along the embodiment of the present invention.

Embodiment 1 FIG.
FIG. 1 shows an elevator equipped with a governor rope swing detection device of the present invention. In FIG. 1, a speed governor rope 3 is connected to an elevator car 1 via a vibration damper 2 provided near the top wall of the car, and the speed governor rope 3 is provided above and below the hoistway. It is wound around an upper pulley 4 and a lower pulley 5 which is a governor pulley. The lower pulley 5 monitors the rotational speed of the lower pulley 5 and outputs an excessive speed signal when the excessive speed is reached, and when an excessive speed detection switch 6 and a rotational speed exceeding the excessive speed are detected. And a rope gripping mechanism 7 for gripping the governor rope 3. The overspeed detection switch 6 is connected to the control panel 9 by a signal cable 8.

  The vibration damper 2 attached to the car 1 is provided with a swing detection device 10 as shown in FIGS. 2 to 5, and a relative value greater than a predetermined value between the governor rope 3 and the car 1. The displacement can be detected. The swing detection device 10 is provided in the car 1 by a signal cable 11 and is connected to a swing detection processing device 12 that performs alarm processing and operation count. The swing detection processing device 12 is connected to the elevator via a signal cable 13. It is connected to a control panel 9 that performs operation control.

  As shown in FIGS. 2 to 5, the vibration damper 2 is attached to the top corner of the car 1 and has a box-shaped mounting bracket 16 having spring seats 14 and 15 on the upper and lower surfaces, and an upper spring seat of the mounting bracket 16. 14 and the lower spring seat 15 extend through the upper spring seat 17 and the lower spring seat 18, and are connected to the governor rope 3 by the connecting device 19 at the upper end and the governor rope by the connecting device 20 at the lower end. 3, a connecting rod 21 connected to the connecting rod 21, an upper compression spring 22 provided between the upper spring seat 17 of the connecting rod 21 and the spring seat 14 of the mounting bracket 16, a lower spring seat 18 of the connecting rod 21 and a mounting bracket. The lower compression spring 23 provided between the 16 spring seats 15 is provided.

  The swing detection device 10 includes a detector 24 attached to the car 1 via a mounting bracket 16, and a cam attached to the governor rope 3 via an upper spring seat 17 and a lower spring seat 18 of the connecting rod 21. And an actuator 25. The detector 24 is a detection switch having a roller 26 that is actuated by an actuator 25, and is attached to the upper spring seat 14 of the mounting bracket 16 at one end and has a detector bracket 27 at the other end. Supported by arms 28. The actuator 25 is attached to a steel tape 29 extending through the detector bracket 27 so as to be relatively movable in the vertical direction, and the upper end of the steel tape 29 is the upper spring seat 17 of the connecting rod 21. It is supported by an upper actuator mounting arm 31 disposed on the upper surface and attached by a fastener 30 such as a nut, and a lower end is supported by a lower actuator mounting arm 32 disposed on the upper surface of the lower spring seat 18 of the connecting rod 21. It is supported.

  As described above, the swing detection device 10 of the present invention includes the mounting bracket 16 fixed to the car 1, the upper spring seat 17 and the lower spring seat 18 fixed to the governor rope 3, the mounting bracket 16 and the upper portion. It is used together with a vibration damper 2 having an upper compression spring 22 and a lower compression spring 23 provided between a spring seat 17 and a lower spring seat 18, and includes a mounting bracket 16, an upper spring seat 17, and a lower portion. A relative displacement exceeding a predetermined value between the car 1 and the governor rope 3 is provided between the spring seat 18 and provided with an actuator 25 and a detector 24 operated by the actuator 25. This is a swing detection device 10 to detect.

  According to the present invention, the actuator 25 of the swing detecting device 10 is attached to the upper spring seat 17 and the lower spring seat 18 by the upper actuator mounting arm 31 and the lower actuator mounting arm 32, and the detector 24 detects the detection. It is attached to the mounting bracket 16 by the instrument mounting arm 28. In the example shown in FIGS. 1 to 5, the detector mounting arm 28 is fixed to the mounting bracket 16 by a bolt 28a, and the upper actuator mounting arm 31 is fixed to the upper spring seat 17 by a fastener 30. As will be described in detail later, the arm 32 is elastically pressed and supported by the upper surface of the lower spring seat 18 between the lower spring seat 18 and the lower compression spring 23 by the spring acting force of the lower compression spring 23. The details of this elastic support structure are as shown in FIGS.

  That is, in FIGS. 2 to 5, concentric protrusions 33 into which the ends of the lower compression springs 23 are fitted are provided on the upper surface of the disk-shaped lower spring seat 18. The lower actuator mounting arm 32 supports a steel tape 29 for firmly fixing and supporting the actuator 25 by welding or the like at one end, and a projection 33 of the lower spring seat 18 on the lower spring seat 18 at the other end. A disc-shaped engagement member 35 having an engagement portion 34 that is a circular recess that engages with each other so as to fit in the axial direction and engage with each other so as not to move in the radial direction is provided. The engaging member 35 is also provided with a radial notch 36 that can receive the governor rope 3, that is, the connecting rod 21 that is a part of the governor rope 3 in the radial direction. Further, a spring receiving protrusion 37 is provided on the upper surface of the engaging member 35 so as to fit the end of the lower compression spring 23 in a form corresponding to the protrusion 33 of the lower spring seat 18.

  In this way, the lower actuator mounting arm 32 supports the actuator 25 at one end, and the other end is engaged with the notch 36 for receiving the governor rope 3 in the radial direction and the lower spring seat 18 in the axial direction. An engaging member 35 having a mating engaging portion 34 is provided, the lower spring seat 18 has a projection 33 protruding toward the engaging member 35, and the engaging member 35 can be fitted into the projection 33 with a clearance fit. It has the engaging part 34 which is such a recessed part of a complementary shape.

  The swing detection device 10 is further provided with a long hole 38 (FIG. 2) through which the connecting rod 21 passes in the upper actuator mounting arm 31 fixed to the upper spring seat 17. The adjustment mechanism which enables the attachment position adjustment with respect to the vertical direction is configured. The long hole 38 is elongated in the longitudinal direction of the upper actuator mounting arm 31, and the position of the upper end of the steel tape 29 that supports the actuator 25 at the time of adjustment is adjusted in the horizontal direction so that the steel tape 29 is correctly in the vertical direction. It can be set to.

  By forming the lower actuator mounting arm 32 with such an engagement member 35, the lower actuator mounting arm 32 is compressed downward without removing the connecting rod 21 and the lower spring seat 18 of the vibration damper 2. It can be inserted between the spring 23 and the lower spring seat 18. Further, the fitting position is determined by the fitting of the projection 33 of the lower spring seat 18 and the engaging portion 34 which is a recess of the engaging member 35, and the spring force of the lower compression spring 23 which is always attached in the compressed state in the normal state. Therefore, since this fitting does not come off, the lower actuator mounting arm 32 can be reliably and accurately held on the lower spring seat 18.

  A procedure for attaching the swing detection device 10 to the vibration damper 2 will be described below. The steel tape 29 to which the operating element 25 is attached and the lower operating element mounting arm 32 are fixed in advance with bolts or the like. On the car, the lower compression spring 23 is further compressed and pulled up to secure a gap between the lower compression spring 23 and the lower spring seat 18, and the engaging member 35 of the lower actuator mounting arm 32 is horizontally placed in the gap. The mounting position is determined by fitting the engaging portion 34, which is a concave portion for fixing the lower actuator mounting arm 32, and the projection 33, which is a spring receiver of the lower spring seat 18, to the lower compression spring 23. The lower actuator mounting arm 32 can be fixed onto the lower spring seat 18 by the spring force of the lower compression spring 23 while the pulling is stopped.

  Next, the detector bracket 27 to which the detector 24 of the detector attachment arm 28 is attached is inserted from the upper end of the steel tape 29 so that the actuator 25 is in contact with the roller 26 of the detector 24, and the detector attachment arm 28. Is fixed to the mounting bracket 16 with bolts or the like. Thereafter, the upper actuator mounting arm 31 was fixed to the upper end of the steel tape 29, and the mounting position of the upper actuator mounting arm 31 was adjusted in the horizontal direction by using the long hole 38 so that the steel tape 29 was attached vertically. Thereafter, the upper spring seat 17 is fixed with a fastener 30. By providing an adjustment margin by the long hole 38 in the upper actuator mounting arm 31, it is possible to accurately mount the swing detection device 10 in the configuration of the present invention, and to smoothly rotate the roller 26 on the actuator 25. Can be moved.

  With the above configuration, the governor rope swing detection device that can be used as a malfunction prevention device for an elevator governor can be attached only by work on the car, reducing work time and safety of work. It is also possible to ensure safety.

  The governor rope swing detection device illustrated and described above is merely an example, and various modifications can be made, and the features of each specific example can be used altogether or selectively combined. For example, an engagement member 35 having a recess 34 and a notch 36 as shown in FIGS. 4 and 5 is provided on either or both of the upper actuator attachment arm 31 and the detector attachment arm 28. The lower actuator attachment arm 32 can be attached to the attachment bracket 16 or the upper spring seat 17 by the same structure as that of attaching the lower actuator attachment arm 32 onto the lower spring seat 18, respectively. In this case, the upper actuator mounting arm 31 is provided on the lower surface of the upper spring seat 17 where the projection 33 serving as a spring receiver is provided, and the detector mounting arm 28 is provided with the projection 33 of the mounting bracket 16. It will be provided on the upper end surface.

  If necessary, for example, a screw that enters the notch 36 of the engaging member 35 on the lower spring seat 18 to position the rotational position of the lower actuator mounting arm 32 in the horizontal plane and prevents rotation, etc. Protrusions can be provided. The detector 24 is provided on a steel tape 29 supported by the same mounting arm as the upper and lower actuator mounting arms 31, and the operating element 25 is mounted on the same mounting arm as the detector mounting arm 28 mounted on the mounting bracket 16. It can also be provided.

  Further, the actuator 25 is attached to an attachment arm attached to the attachment bracket 16, and the detector 24 is similar to the lower actuator attachment arm 32 supported by the spring action between the lower spring seat 18 and the lower compression spring 23. It can also be supported in a cantilevered manner only by the mounting arm.

  The present invention can be used for a governor rope swing detection device that can be used in a malfunction prevention device for an elevator governor.

  1 cage, 2 vibration damper, 3 governor rope, 10 swing detection device, 16 mounting bracket, 17, 18 spring seat (17 upper spring seat, 18 lower spring seat), 22, 23 compression spring (22 upper compression) Spring, 23 lower compression spring), 24 detector, 25 actuator, 26 notch, 28, 31, 32 mounting arm (28 detector mounting arm, 31 upper actuator mounting arm, 32 lower actuator mounting arm), 34 Joint part, 35 engaging member, 37 protrusion, 38 adjustment mechanism.

Claims (6)

A mounting bracket fixed to the car; a spring seat fixed to the governor rope; and a vibration damper provided with a compression spring provided between the mounting bracket and the spring seat. A rocker provided between the spring seat and an actuator and a detector actuated by the actuator to detect a relative displacement exceeding a predetermined value between the cage and the governor rope. A motion detection device,
At least one of the actuator and the detector is elastically supported between the spring seat and the compression spring via a mounting arm, and the governor rope swing detection apparatus.   The mounting arm supports at least one of the actuator and the detector at one end, and a notch for receiving the governor rope in the radial direction at the other end and an axial direction at the spring seat. The governor rope swing detection device according to claim 1, further comprising an engaging member having an engaging portion to be engaged.   The spring seat has a projection protruding toward the engagement member, and the engagement member has an engagement portion which is a concave portion having a complementary shape that can be fitted into the projection by a clearance fit. The governor rope swing detection device according to claim 1 or 2.   The detector is attached to the mounting bracket, the actuator is supported by an upper mounting arm and a lower mounting arm supported by the spring seat, and only the lower mounting arm has the engagement member. The governor rope rocking | fluctuation detection apparatus as described in any one of Claims 1-3 characterized by the above-mentioned.   The governor rope swing according to any one of claims 1 to 4, wherein an adjustment mechanism capable of adjusting a mounting position of the actuator in a vertical direction is provided on an upper mounting arm fixed to the upper spring seat. Detection device.   The said operation element is attached to the said attachment arm, The said detector is supported by the lower attachment arm supported by the said spring seat, The Claim 1 characterized by the above-mentioned. Governor rope swing detection device.

Images