JP5924665B2 - Long object catch prevention type bracket in elevator hoistway and long object catch prevention method for bracket in elevator hoistway - Google Patents

Description

  The present invention relates to a long object catch prevention type bracket in an elevator hoistway and a long object catch prevention method for the bracket in an elevator hoistway.

  As an elevator damage during earthquakes and strong winds, especially in an elevator for a high-rise building, the shaking of the building and the ropes of the elevator resonate, and the ropes may swing greatly to contact equipment installed in the hoistway. There have been reports of recent earthquakes (such as the Niigata Chuetsu Earthquake and the Kii Peninsula Offshore Earthquake) that can lead to the breakdown and stoppage of elevators.

  For such events, it is necessary to provide protective measures against equipment installed in the hoistway so that ropes will not be caught. “Explanation of Technical Standards for Elevators, 2009 Edition, Volume Elevator Seismic Design and Construction Guidelines 2009 edition "(Non-Patent Document 1). In Non-Patent Document 1, as a means for preventing such a catching phenomenon, for rail brackets installed in the hoistway, measures are taken to continuously put protective wires in the vertical direction at these ends. However, it is described that the ropes are prevented from wrapping around the back side of the rail brackets.

Ministry of Land, Infrastructure, Transport and Tourism Housing Bureau Building Guidance Division supervision, edited by the Japan Building Equipment and Elevator Center and the Japan Elevator Association, “Explanation of Technical Standards for Elevator 2009 Version, Volume Elevator Seismic Design and Construction Guidelines 2009 Edition”, 2009 August 1, 2012, Chapter 8. P124 ~ 130 in protrusion protection device to prevent long objects from catching

  The above-mentioned measures to prevent catching with the protective wire are effective in suppressing the wraparound of the rail bracket. However, according to recent reports of earthquakes, etc., depending on conditions such as the difference in rigidity between the rope and the protective wire, etc. In some cases, more effective rope catch prevention measures are required.

  The present invention has been made in view of such circumstances, and an elevator that can eliminate a hooked state without being manually operated even if a long object wraps around the back side of the bracket due to an earthquake, strong wind, or the like. An object of the present invention is to provide a bracket for preventing a long object from being caught in a hoistway.

  The present invention for achieving the above-mentioned object is a bracket for supporting an object to be mounted in a hoistway, and a support surface for supporting the object to be mounted, and a hook preventing portion on the opposite side of the support surface. And when the long object in the hoistway wraps around the hook prevention part from the support surface side, the hook preventing part is caused by the restoring force of the long object. The inclined line has an inclined line that promotes movement of the object to eliminate the catch, and the inclined line is inclined so that a component parallel to the inclined line of the restoring force faces the outlet side of the catch preventing portion. It is a long object catch prevention type bracket in an elevator hoistway.

  According to the present invention, even if a long object has turned around to the back side of the bracket, the hooked state can be eliminated without manual intervention.

It is a top view which shows the state in the general hoistway of an elevator simply. (A) is a top view of the rail bracket regarding Embodiment 1 of this invention, (b) is a figure explaining the effect | action of the back side shape of a rail bracket. FIG. 4 is a diagram of the same mode as that of FIG. 2 in the second embodiment. It is a figure of Embodiment 3 and the same aspect as FIG. It is a figure of Embodiment 4 and the same aspect as FIG.

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a long object catching prevention bracket in an elevator hoistway and a method of preventing a long object catching on a bracket in an elevator hoistway according to the present invention will be described below with reference to the accompanying drawings. In the drawings, the same reference numerals indicate the same or corresponding parts.

Embodiment 1 FIG.
FIG. 1 is a plan view simply showing a state in a general hoistway of an elevator. As shown in FIG. 1, a car 3 and a counterweight 5 are disposed in an elevator hoistway 1.

  The raising and lowering of the car 3 and the counterweight 5 are guided by a corresponding pair of left and right car guide rails 7 and a pair of left and right weight guide rails 9. Further, the car guide rail 7 and the weight guide rail 9 are fixed to the corresponding rail bracket 11 by using a well-known rail clip, not shown. The rail bracket 11 is supported by a wall surface, a beam, or a part integrally formed with the hoistway 1.

  A main rope 13 driven by a hoisting machine is disposed in the hoistway 1, and the car 3 and the counterweight 5 are connected to each other by the main rope 13. When the main rope 13 is driven by the hoisting machine, the car 3 and the counterweight 5 are raised and lowered in the hoistway 1 in directions that are opposite to each other.

  Next, based on FIG. 2, the detail of the rail bracket regarding this Embodiment 1 is demonstrated. 2A is a plan view of the rail bracket according to the first embodiment, and FIG. 2B is a diagram for explaining the action of the back side shape of the rail bracket.

  The rail bracket 11 has, for example, a support surface 21 that supports, for example, the weight guide rail 9 on the front side, and further has a catch prevention portion 31 on the back side, that is, on the opposite side of the support surface 21. The hook preventing portion 31 has a predetermined outline line that is not parallel to the support surface 21 in plan view. The outline line in plan view shows that when the main rope 13, which is a long object, wraps around from the support surface 21 to the catch prevention portion 31, the main rope 13 is pulled by the restoring force due to the tension of the main rope 13. It is an inclined line that promotes movement toward the elimination of hanging.

  Hereinafter, the inclined line will be described. First, as a premise, when a building vibrates due to strong winds, earthquakes, or the like, depending on the position of the car 3, the main rope 13 may resonate with the vibration and shake greatly. Depending on the swing behavior, the main rope 13 may wrap around to the back side of the support surface 21 of the rail bracket 11. The main rope 13 that has come around is caught on the back side of the rail bracket 11 and may not return to its original position.

  In this regard, the inclination line of the hook preventing unit 31 according to the first embodiment has a component parallel to the inclination line out of the restoring force resulting from the deviation from the original position and the tension of the main rope 13 due to its own weight. The cable 13 is tilted in a direction that acts to return the line 13 to its original position. In other words, the inclined line of the hook preventing portion 31 is inclined such that a component parallel to the inclined line of the restoring force faces the outlet side (the bracket end surface 41 side) of the hook preventing portion 31.

  In FIG. 2B, for example, considering the moment when the main rope 13 is hooked at the position (i), the main rope 13 first has a restoring force indicated by F. This restoring force F is essentially the amount of tension T of the main rope 13 increased by the amount of movement of the main rope 13 extending in the vertical direction to the position (i), and the main rope generated due to the tension T. 13 is intended to return to the original straight vertical extension state.

Assuming that the component parallel to the inclination line of the hook preventing portion 31 in the restoring force F of the main rope 13 is Fh, and the component orthogonal to the inclination line is Fv, the parallel component Fh and the orthogonal component Fv are respectively
Fh = F · sin α
Fv = F · cos α
It can appear. Α is an angle formed by the extending direction of the straight line S connecting the current position of the main rope 13 and the original position and the extending direction of the orthogonal component Fv. The counterclockwise direction in FIG. The angle that rotates around is defined as a positive angle.

  As can be seen from this, if α exceeds 0 degree, Fh acts toward the front end side (exit) of the rail bracket 11. Therefore, a restoring force component directed toward the distal end side of the rail bracket 11 acts on the main rope 13 in contact with the hook preventing portion 31. In the first embodiment, the angle α> 0 degrees is maintained at the position of the main rope 13 in (i), (ii), and (iii) in FIG. 2B, and the main rope 13 is The restoring force component force Fh continues to act in the rail bracket exit direction, and is moved to the front end side of the rail bracket 11.

  Here, the angle α is not constant and changes as the main rope 13 moves. In the mode of FIG. 2B, the angle α decreases as the main rope 13 approaches the exit direction of the rail bracket 11. Then, there is a position where the angle α is 0 degree between the position (iii) and the position (iv). At the position (iv), the angle α <0 degree, and Fh is the root of the rail bracket 11. Look to the side. However, as can be understood from FIG. 2B, in the catch preventing portion 31, the region where Fh faces the tip side is larger than the region where Fh faces the root side, and the main rope 13 is ( i), (ii), and (iii) through the position, the moving inertia toward the restoration obtained by Fh can pass the tip of the rail bracket 11 as it is, and the hook can be released to return to the original vertical state. In other words, other factors such as the coefficient of friction between the main rope 13 and the hook preventing portion 31, the tension of the main rope 13, the distance between the main rope 13 and the hook preventing portion 31, etc. are necessary so as to obtain such an action. In consideration of the conditions, the details of the inclined line of the catch preventing unit 31 can be determined.

  According to the long object catching prevention type bracket in the elevator hoistway and the long object catching prevention method for the bracket in the elevator hoistway according to the present embodiment described above, the catching prevention part itself is the main part. Using the restoring force of long objects such as ropes, it has an inclined line that encourages movement in the direction of catch cancellation, so long objects will wrap around the back of the bracket due to earthquakes, strong winds, etc. Even if it happens, it is possible to eliminate the caught state naturally without human intervention.

Embodiment 2. FIG.
A second embodiment of the present invention will be described with reference to FIG. In the second embodiment, the inclined line of the hook preventing portion 131 of the rail bracket 111 is modified from the first embodiment, and other configurations may be the same as those in the first embodiment.

  FIG. 3 is a diagram of the same mode as FIG. 2 in the second embodiment. As shown in FIG. 3B in particular, in the second embodiment, the hook preventing portion 131 of the rail bracket 111 has a larger inclination than the hook preventing portion 31, thereby , (I), (ii), (iii) to the position of (iv) at the tip, the inclined line is such that the angle α> 0 degrees is maintained. In other words, the inclined line is configured only by a region where the parallel component Fh faces the outlet side of the catch preventing unit 31.

  According to the second embodiment, until the main rope 13 receives the parallel component Fh with the inclined line and separates from the hook preventing portion 31, Fh is consistently the leading end side (the hook preventing) of the rail bracket 11. The main rope 13 is returned to the original vertical state by releasing the catch more smoothly and reliably.

Embodiment 3 FIG.
A third embodiment of the present invention will be described with reference to FIG. In the third embodiment, the inclined line of the hook preventing portion 231 of the rail bracket 211 is modified from the first embodiment, and other configurations may be the same as those in the first embodiment.

  FIG. 4 is a diagram of the same mode as that of FIG. 2 in the third embodiment. As shown in FIG. 4B, in the third embodiment, the hook preventing portion 231 of the rail bracket 211 has an inclined line including two different inclined states. That is, the inclined line of the hook preventing portion 231 includes the first inclined line portion 231a and the second inclined line portion 231b.

  The second inclined line portion 231b is steeper than the first inclined line portion 231a. That is, the side closer to the tip of the rail bracket 211 than the first inclined line portion 231a is the main rope 13 side (the right side of the drawing). ) Is steep. Moreover, although it is an example, the 1st inclination line part 231a shall be equal to the inclination line of the catch prevention part 31 of Embodiment 1 mentioned above.

  Thereby, in this Embodiment 3, from the 1st inclination line part 231a containing the position of (i) and (ii) to the 2nd inclination line part 231b containing the position of (iii) and (iv) consistently. The angle α> 0 degree is maintained, and the restoring force in the outlet direction is continuously maintained until the hook is released, while the restoring force in the outlet direction is also continuously maintained in the inclined line. Since it is not so steep, there is an excellent advantage that the rail bracket 211 itself can be miniaturized. In other words, the third embodiment can obtain the same advantages as those of the second embodiment, but can further reduce the size of the rail bracket compared to the first and second embodiments. Note that the angle setting of the inclined line, that is, the step setting, may be set to be divided into three or more steps depending on the relative position of the main rope and the bracket, or may be set to a stepless curve.

Embodiment 4 FIG.
A fourth embodiment of the present invention will be described based on FIG. In the fourth embodiment, the inclined line of the catch preventing portion 331 of the rail bracket 311 is modified from the first embodiment, and other configurations may be the same as those in the first embodiment.

  FIG. 5 is a diagram of the same mode as FIG. 2 in the fourth embodiment. As shown in FIG. 5B, in the fourth embodiment, the inclined lines of the hook preventing portion 331 of the rail bracket 311 are the first inclined line portion 231a and the second inclined line portion 231 of the third embodiment. Similar to the inclined line portion 231b, the inclined line portion includes a first inclined line portion 331a and a second inclined line portion 331b. Furthermore, the inclined line of the hook preventing portion 331 is a curved shape with rounded corners at the boundary between the first inclined line portion 331a and the second inclined line portion 331b, and between the second inclined line portion 331b and the bracket end surface 341. The boundary is also curved with rounded corners.

  According to the fourth embodiment, while obtaining the excellent effect of the third embodiment, when the main rope 13 moves on the inclined line or separates from the rail bracket 11, the smooth movement / The advantage of being able to perform the separation is obtained, and the effect of eliminating the catch can be further enhanced.

  Although the contents of the present invention have been specifically described with reference to the preferred embodiments, various modifications can be made by those skilled in the art based on the basic technical idea and teachings of the present invention. It is self-explanatory.

  For example, in the above embodiment, the main rope has been described as a long object, and the rail bracket that supports the weight guide rail as the bracket has been described as an example. However, the present invention is not limited thereto, As a thing, you may carry out targeting other ropes, such as what is called a Compen rope, a balance rope, and a governor rope, and also carry out for objects other than ropes, such as a tail cord and a balance rope. It would also be possible. Similarly, the bracket may be implemented for a rail bracket that supports the car guide rail, and may be widely implemented for brackets that support equipment in hoistways other than rails.

  DESCRIPTION OF SYMBOLS 1 Hoistway, 7 Car guide rail, 9 Weight guide rail, 11, 111, 211, 311 Rail bracket, 13 Main rope, 21 Support surface, 31, 131, 231, 331 Hook prevention part, 231a, 331a 1st inclination Line part, 231b, 331b Second inclined line part, 41, 341 Bracket end face.

Claims (4)

A bracket for supporting an object to be mounted in a hoistway,
A support surface for supporting the attachment object;
On the opposite side of the support surface, it has a catch prevention part,
When the long object in the hoistway wraps around the hook prevention part from the support surface side, the hook preventing part is released by the restoring force of the long object. It has an inclined line that promotes movement toward
The inclined line is inclined such that a component parallel to the inclined line of the restoring force faces the outlet side of the catching prevention portion ,
The inclined line is composed only of a region in which the component parallel to the inclined line of the restoring force faces the outlet side of the catch prevention unit,
The inclined line includes a first inclined line portion and a second inclined line portion as at least two different inclined states,
The second inclined line portion is closer to the exit side of the hook preventing portion than the first inclined line portion, and the inclination is steep.
Long object catch bracket in the elevator hoistway. In the inclined line, the boundary between the first inclined line portion and the second inclined line portion, and the boundary between the second inclined line portion and the bracket end surface are respectively curved with rounded corners. ing,
The bracket for preventing a long object from being caught in the elevator hoistway according to claim 1. The long object is a main rope that connects a car and a counterweight,
The attachment object is a weight guide rail,
The long object catch prevention type bracket in the elevator hoistway of Claim 1 or 2 . A method for preventing a long object from being caught on a bracket that supports an object to be mounted in a hoistway,
Prepare a bracket having a support surface for supporting the attachment object, and a catch prevention portion on the opposite side of the support surface;
When the long object in the hoistway wraps around the hook preventing part from the support surface side, the long object is caught by the restoring force of the long object. Inclination line to promote movement toward resolution,
The inclined line is inclined such that a component parallel to the inclined line of the restoring force is directed toward an exit side of the catching prevention portion, and a component parallel to the inclined line of the restoring force is the The second inclined line portion includes a first inclined line portion and a second inclined line portion, which are configured only by a region facing the outlet side of the catch preventing portion and have at least two different inclined states. Is located on the outlet side of the hook preventing part with respect to the first inclined line part, and the inclination is steep,
Thereby, using the restoring force, the long object is detached from the catch preventing part,
A method for preventing a long object from being caught on a bracket in an elevator hoistway .

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