JP2008230840A - Derailment preventing device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a derailment preventing device for an elevator capable of preventing derailment and suppressing generation of vibration and noise and conduction at normal time, achieving excellent efficiency of installation and adjustment work and applicable to a high lift elevator and a high speed elevator using a roller guide etc. as a rail guide device. <P>SOLUTION: The derailment preventing device for the elevator is provided with a pair of guide rails erected inside a hoistway and having rail head parts and rail neck parts thinner than the rail head parts; a lifting/lowering body arranged between the guide rails so as to be liftable/lowerable; guide shoes mounted to upper and lower end parts on both sides of the lifting/lowering body and engaged with the guide rails to guide the lifting/lowering body; and a rail nipping means provided adjacent to the guide shoes, separated from the guide rails at normal time and nipping the rail neck parts of the guide rails when occurrence of earthquake is detected. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an elevator derailment prevention device.

  In a conventional elevator derailment prevention device, a normal guide shoe that is provided on the lifting body and guides the lifting body along the guide rail during normal running is provided separately from the normal guide rail. An auxiliary guide rail that follows the deflection of the guide rail due to a load is known (for example, see Patent Document 1).

JP 2005-225668 A

  However, in the conventional elevator derailment prevention device disclosed in Patent Document 1, the amount of deflection displacement generated in the guide rail when an earthquake occurs exceeds the follow-up range determined by the length of the auxiliary shoe support shaft. In the event that a rail break occurs, the auxiliary guide shoe will not touch the guide rail surface even when there is a problem that the rail has not been fundamentally prevented or even during normal times when an earthquake has not occurred. As a result, vibration and noise are likely to be generated, the generated vibration and noise are likely to be transmitted to the lifting body, and the normal guide shoe and auxiliary guide shoe are separate. , For problems such as complicated installation work and high lift elevators and high-speed elevators where roller guides are used as rail guide devices Considering is not made, there is a problem that its application is difficult.

  The present invention has been made to solve the above-described problems, and can prevent the rail from being removed in advance, and can suppress the generation and conduction of vibration and noise during normal times when no earthquake occurs. In addition, it is possible to obtain an elevator derailment prevention device that can be applied to a high-lift elevator or a high-speed elevator that has good workability in installation adjustment and that uses a roller guide or the like as a rail guide device.

  In the elevator rail release preventing device according to the present invention, a pair of guide rails standing in the hoistway and having a rail head portion and a rail neck portion thinner than the rail head portion, and between the guide rails A lifting body disposed so as to be able to move up and down, a guide shoe that is attached to both upper and lower ends of the lifting body, engages with the guide rail and guides the lifting body, and is provided adjacent to the guide shoe, It is separated from the guide rail in normal times, and has a rail clamping means for clamping the rail neck of the guide rail when an earthquake occurrence is detected.

The present invention relates to an elevator derailment prevention device, and a pair of guide rails, which are erected in a hoistway and have a rail head and a rail neck thinner than the rail head, and are movable up and down between the guide rails. An elevator body disposed, a guide shoe that is attached to the upper and lower ends of both sides of the elevator body, engages with the guide rail and guides the elevator body, and is provided adjacent to the guide shoe. A pair of arms and shoe members or guides that are separated from the guide rail, and that are provided with rail clamping means for clamping the rail neck of the guide rail when an earthquake occurrence is detected. Since the roller clamps the rail neck, the lifting body can follow the deflection of the guide rail caused by the action of seismic force. An effect that it is possible to prevent the natural.
Further, in normal times when no earthquake occurs, the shoe material or the guide roller is not in contact with the rail neck, so that the effect of suppressing the generation and conduction of vibrations and noises is also achieved.

Embodiment 1 FIG.
1 to 4 relate to the first embodiment of the present invention. FIG. 1 is a plan view showing a normal state of the elevator rail release prevention device, and FIG. 2 is a diagram of the elevator rail release prevention device in a normal state. FIG. 3 is a side view showing a normal state of the elevator rail release preventing device, and FIG. 4 is a plan view showing the state of the elevator rail release preventing device during operation.
In the figure, reference numeral 1 denotes a guide rail standing in an elevator hoistway (not shown), which has a rail head portion 1a and a rail neck portion 1b thinner than the rail head portion 1a. Between the guide rails 1, a lifting body (car, balance weight, etc.) (not shown) is disposed so as to be movable up and down via a guide shoe 2 a, and the guide shoes 2 a have upper and lower ends on both sides of the lifting body. It is supported by the support body 3 screwed to the rail, and is disposed so as to engage with the rail head portion 1a.
A pair of arms 4 are opposed to the lifting body side of the support body 3 and are pivotally attached by a shaft 5, and an end portion of the arm 4 on the side close to the guide rail 1. While the shoe material 6a is provided on each of the two, the ends of the arm 4 on the side away from the guide rail 1 are connected to each other by a pin 8 with an electromagnetic magnet 7 interposed therebetween. Yes.

When the electromagnetic magnet 7 is energized and biased, the distance between the ends of the arm 4 on the side away from the guide rail 1 becomes small, and each of the arms 4 swings about the shaft 5. As a result, the distance between the end portions of the arm 4 on the side close to the guide rail 1 is increased, so that the shoe material 6a and the rail neck portion 1b are separated from each other.
On the other hand, when the energization of the electromagnetic magnet 7 is interrupted and de-energized, the distance between the end portions of the arm 4 on the side away from the guide rail 1 by the action of the pressing spring 9 provided in the electromagnetic magnet 7 As a result of each of the arms 4 swinging about the shaft 5, the distance between the ends of the arms 4 on the side close to the guide rail 1 is reduced. The rail neck 1b is held. At this time, the protrusions 4a provided on the opposite sides of the pair of arms 4 are in contact with each other, so that the shoe materials 6a are kept at an appropriate distance so that the rail neck 1b It can be pinched.

1 to 3 show a normal state in which no earthquake is detected, and the electromagnetic magnet 7 is energized by being energized, and the pair of arms 4 are opened accordingly. In other words, the shoe material 6a and the rail neck 1b are separated from each other.
FIG. 4 shows the state where the occurrence of an earthquake is detected and the elevator derailment prevention device according to the present invention is activated, and when the occurrence of an earthquake is detected, the energization to the electromagnetic magnet 7 is cut off and de-energized, Accordingly, the pair of arms 4 are closed by the action of the push springs 9, that is, the respective shoe members 6a sandwich the rail neck 1b.
Even in this state, the shoe material 6a and the rail neck 1b are slidably engaged, and even after the elevator derailment prevention device according to the present invention is operated, the elevator itself is not raised or lowered. Is possible.

In the elevator derailment prevention apparatus configured as described above, when the occurrence of an earthquake is detected, since the pair of arms and the shoe material sandwich the rail neck, the lifting body is provided with a guide rail generated by the action of the seismic force. It is possible to follow the deflection and prevent the rail from coming off.
Further, during normal times when no earthquake is occurring, the shoe material is not in contact with the rail neck, so that generation and conduction of vibration and noise can be suppressed.
Furthermore, since the guide shoe and the arm are integrated with one support body, the installation work does not require a lot of work and the workability is good.

Embodiment 2. FIG.
FIGS. 5 to 7 relate to Embodiment 2 of the present invention, FIG. 5 is a plan view showing an elevator rail release prevention device, FIG. 6 is a front view of the elevator rail release prevention device, and FIG. FIG. 5 to 7, the same reference numerals as those in FIGS. 1 to 3 denote the same or corresponding parts, and the description thereof will be simplified or omitted as appropriate.
The pair of arms 4 are opposed to the upper and lower ends on both sides of the lifting body that is disposed between the pair of guide rails 1 so as to be movable up and down, and can be rotated by the shaft 5 with a spacer 5a interposed therebetween. The shoe member 6a is provided at each of the end portions of the arm 4 on the side close to the guide rail 1, while the end portions of the arm 4 on the side away from the guide rail 1 are provided with each other. Are connected to each other by the pin 8 with the electromagnetic magnet 7 interposed therebetween. Then, a sliding shoe 2b that is slidably engaged with the rail head 1a is positioned further on the lifting body side of the arm 4, and the support body 3 is sandwiched between the lifting body and the lifting body. And is detachably screwed. An oiling machine 10 for supplying lubricating oil to the rail head 1a is attached to the side of the sliding shoe 2b opposite to the lifting body.
The operation at the time of normal detection and occurrence of an earthquake in the second embodiment is the same as in the first embodiment, and the elevator itself can be lifted and lowered even after the elevator derailment prevention device according to the present invention is activated. The same is true for certain points.

In the elevator derailment prevention apparatus configured as described above, when the occurrence of an earthquake is detected, since the pair of arms and the shoe material sandwich the rail neck portion, the lifting body has a guide rail generated by the action of the seismic force. It is possible to follow the deflection and prevent the rail from coming off.
Further, during normal times when no earthquake is occurring, the shoe material is not in contact with the rail neck, so that generation and conduction of vibration and noise can be suppressed.
Furthermore, since the sliding shoe is detachably attached, it is possible to replace only the sliding shoe, which is convenient for maintenance.

Embodiment 3 FIG.
FIGS. 8 to 10 relate to Embodiment 3 of the present invention, FIG. 8 is a plan view showing an elevator rail release prevention device, FIG. 9 is a front view of the elevator rail release prevention device, and FIG. 10 is an elevator. FIG. 8 to 10, the same reference numerals as those in FIGS. 1 to 3 indicate the same or corresponding parts, and the description will be simplified or omitted as appropriate.
In the third embodiment, a roller guide 6b is used in place of the shoe material 6a in the first embodiment.
That is, the respective end portions of the pair of arms 4 that are rotatably attached to the lifting body side of the support 3 by the shaft 5 on the side close to the guide rail 1 are bent at a right angle. The roller guide 6b is pivotally attached to the bent portion.

The operation at the normal time and when the occurrence of an earthquake is detected is substantially the same as in the first and second embodiments, and in the normal time when no earthquake is detected, the electromagnetic magnet 7 is energized. Along with this, the pair of arms 4 are opened, that is, the roller guide 6b and the rail neck 1b are separated from each other.
Then, in the state where the occurrence of an earthquake is detected and the elevator rail release preventing device according to the present invention is activated, the energization to the electromagnetic magnet 7 is interrupted and de-energized. The pair of arms 4 is in a closed state, that is, each of the roller guides 6b sandwiches the rail neck 1b.
In addition, the elevator can be lifted and lowered even after the elevator derailment prevention apparatus according to the present invention is activated.

In the elevator derailment prevention device configured as described above, when the occurrence of an earthquake is detected, since the pair of arms and the roller guide sandwich the rail neck, the lifting body is provided with a guide rail generated by the action of the seismic force. It is possible to follow the deflection and prevent the rail from coming off.
In addition, during normal times when there is no earthquake, the shoe material is not in contact with the rail neck so that vibration and noise can be suppressed and generated. Since it is united with two supports, it does not require any trouble in installation and adjustment, and the workability is also good.
Further, since the roller guide is used instead of the shoe material, the present invention can be applied to a high head elevator or a high speed elevator in which a roller guide or the like is used as a rail guide device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a normal state of an elevator derailment prevention apparatus according to Embodiment 1 of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a normal state of an elevator derailment prevention apparatus according to Embodiment 1 of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a normal state of an elevator derailment prevention device according to Embodiment 1 of the present invention. It is a top view which shows the state at the time of the action | operation of the derailment prevention apparatus of the elevator in Embodiment 1 of this invention. It is a top view which shows the derailment prevention apparatus of the elevator in Embodiment 2 of this invention. It is a front view which shows the derailment prevention apparatus of the elevator in Embodiment 2 of this invention. It is a side view which shows the derailment prevention apparatus of the elevator in Embodiment 2 of this invention. It is a top view which shows the derailment prevention apparatus of the elevator in Embodiment 3 of this invention. It is a front view which shows the derailment prevention apparatus of the elevator in Embodiment 3 of this invention. It is a side view which shows the derailment prevention apparatus of the elevator in Embodiment 3 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide rail 1a Rail head part 1b Rail neck part 2a Guide shoe 2b Sliding shoe 3 Support body 4 Arm 4a Protrusion part 5 Axis 5a Spacer 6a Shoe material 6b Roller guide 7 Electromagnetic magnet 8 Pin 9 Push spring 10 Oiling machine

Claims (6)

A pair of guide rails standing in the hoistway and having a rail head and a rail neck thinner than the rail head;
An elevating body disposed between the guide rails so as to be movable up and down;
Guide shoes that are attached to upper and lower ends on both sides of the lifting body and engage the guide rail to guide the lifting body;
An elevator provided adjacent to the guide shoe, normally spaced from the guide rail, and configured to clamp the rail neck of the guide rail when an earthquake occurs. Rail release prevention device.   The rail clamping means includes a pair of arms, an electromagnetic magnet that urges the arm in a direction to open the arm when energized, and a push spring that applies a clamping force to the pair of arms when the energization of the electromagnetic magnet is interrupted. The elevator derailment prevention device according to claim 1, comprising:   3. The elevator rail release preventing device according to claim 2, wherein the rail clamping means includes a shoe member provided at an end portion of the pair of arms on a side close to the rail neck portion.   3. The elevator rail release preventing device according to claim 2, wherein the rail clamping means includes a roller guide provided at an end portion of the pair of arms on a side close to the rail neck portion.   The elevator rail release preventing device according to any one of claims 1 to 4, wherein the rail clamping means is configured integrally with the guide shoe.   The elevator rail release preventing device according to any one of claims 1 to 4, wherein the rail clamping means is configured separately from the guide shoe.

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