JP2005225668A - Derailment preventing device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a derailment preventing device for an elevator capable of following an instantaneous large deflection of a guide rail when earthquake occurs with an auxiliary guide shoe separately provided from a normal shoe to be used for normal running. <P>SOLUTION: This derailment preventing device for an elevator is provided with the normal guide shoe 4 provided in an elevator body to guide the elevator body along the guide rail 2 for normal running and the auxiliary guide shoe 5 separately provided from the normal shoe to follow the deflection of the guide rail 2 when a load of the earthquake is applied. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an elevator derailment prevention device.

A general elevator cab and a counterweight are configured to be moved up and down in a hoistway by being guided by a guide rail by a guide shoe. For this reason, when an earthquake occurs, the seismic force acts on the guide rails via the guide shoes installed above and below the car room and the counterweight.
Due to this seismic force, the guide rail is deflected, and the guide shoe on the opposite side of the guide rail to which the seismic force is applied is displaced in a direction away from the guide rail. If this displacement is larger than the allowance between the guide shoe and the guide rail, the rail will be removed.
As a conventional device for preventing this rail removal, there is one provided with an auxiliary guide rail (see, for example, Patent Document 1).

Japanese Utility Model Publication No. 53-70057

  In the conventional elevator derailment prevention device, the auxiliary guide rail needs to be installed at the entire height of the hoistway, so that the cost increases and the installation space needs to be secured. In addition, since a guide rail having a large size is applied to reduce the amount of deflection, there is a disadvantage that the cost is further increased.

  The present invention has been made in order to solve the above-described problems, and an auxiliary guide shoe provided separately from a normal guide shoe used during normal traveling provides a large instantaneous guide rail during an earthquake. An elevator derailment prevention device capable of following deflection is provided.

  In the elevator derailment prevention device according to the present invention, the normal guide shoe that is provided on the lifting body and guides the lifting body along the guide rail during normal travel, and the normal guide shoe are provided separately. An auxiliary guide shoe that follows the deflection of the guide rail due to an earthquake load is provided.

  According to the elevator derailment prevention device of the present invention, the normal guide shoe that is provided on the lifting body and guides the lifting body along the guide rail during normal travel, and the normal guide shoe are provided separately. Since it has an auxiliary guide shoe that follows the deflection of the guide rail due to the earthquake load, even if the normal guide shoe comes off the guide rail due to the earthquake load, the auxiliary guide shoe can prevent the rail from coming off. .

Embodiment 1 FIG.
FIG. 1 is a schematic configuration diagram showing an elevator derailment prevention apparatus according to Embodiment 1 for carrying out the present invention, and FIG. 2 shows an elevator derailment prevention apparatus according to Embodiment 1 of the present invention that receives a load during an earthquake. It is a front view which shows the state at the time.
The elevator car guide devices are respectively arranged at the upper and lower left and right ends of the car room 1 and guide the car room 1 up and down along the guide rails 2. The car guide device includes a normal guide shoe 4 provided on each of the left and right ends of the upper beam 3 of the car frame, and an auxiliary tool provided separately from the normal guide shoe 4 and superposed on the upper part thereof. A guide shoe 5 is provided. The normal guide shoe 4 includes a shoe member 4a that is guided along the guide rail 2 during normal running, and a shoe support member 4b that is attached to the left and right ends of the upper beam 3. The shoe support member 4b includes a horizontal attachment portion 4c fixed directly on the upper beam 3, a vertical portion 4d for attaching the shoe member 4a, and an upper horizontal portion 4e. The auxiliary guide shoe 5 is mounted on an auxiliary shoe member 5 a that engages with the guide rail 2 at a position farther outward of the car chamber 1 than the normal guide shoe 4 and the shoe support member 4 b of the normal guide shoe 4. The auxiliary shoe supporting member 5b and the spring 5c for pressing the auxiliary shoe member 5a against the guide rail 2 are constituted. The auxiliary shoe support member 5b is mounted on the upper horizontal portion 4e of the shoe support member 4b of the normal guide shoe 4 and mounted on the upper horizontal portion 4e and fastened and fixed by bolts and nuts, and for attaching the auxiliary shoe member 5a. A vertical portion 5e is provided. The auxiliary shoe support shaft 5f is a longer support shaft than the support shaft 4f of the normal guide shoe 4.

During normal running, the elevator car guide device is responsible for the reaction force by the normal guide shoe 4. When the guide rail 2 bends momentarily due to an earthquake load, auxiliary guides installed at positions away from the car room 1 at both upper and lower ends of the car room 1 as shown in FIG. The auxiliary shoe member 5a of the shoe 5 keeps contact with the guide rail 2 by the force of the spring 5c, so that the rail can be prevented from coming off.
In the above description, the case where the auxiliary guide shoe is attached to the car-side guide device has been described. However, the same effect can be obtained by attaching the same auxiliary guide shoe to the counterweight-side guide device.

Embodiment 2. FIG.
FIG. 3 is a schematic configuration diagram showing an elevator derailment prevention apparatus according to Embodiment 2 of the present invention.
In the second embodiment, an auxiliary guide shoe 5 is installed between the upper beam 3 and a normal guide shoe 4. The car guide device includes an auxiliary guide shoe 5 provided on both left and right ends of the upper beam 3 of the car frame, and a normal guide provided separately from the auxiliary guide shoe 5 and superposed on the upper part thereof. A shoe 4 is provided. The auxiliary guide shoe 5 includes an auxiliary shoe member 5a that is guided along the guide rail 2 at the time of an earthquake, an auxiliary shoe support member 5b that is mounted on both left and right ends of the upper beam 3, and an auxiliary shoe member 5a that is attached to the guide rail 2. And a spring 5c for pressing the. The auxiliary shoe support member 5b includes a horizontal mounting portion 5d fixed directly on the upper beam 3, a vertical portion 5e for mounting the auxiliary shoe member 5a, and an upper horizontal portion 5g. The normal guide shoe 4 includes a shoe member 4a that is guided along the guide rail 2 during normal running at a position farther outward of the car room 1 than the auxiliary guide shoe 5, and a shoe support member 5b of the auxiliary guide shoe 5. The shoe support member 4b is mounted on the shoe support member 4b. The shoe support member 4b is mounted on the upper horizontal portion 5g of the auxiliary shoe support member 5b of the auxiliary guide shoe 5 and is mounted on the horizontal mounting portion 4c fastened and fixed by bolts and nuts, and a vertical for attaching the shoe member 4a. 4 d and the upper horizontal part 4e for attaching the normal oil feeder 6 are provided. The auxiliary shoe support shaft 5f is a longer support shaft than the support shaft 4f of the normal guide shoe 4.

Also in the second embodiment, even if the normal guide shoe 4 is detached from the guide rail 2 due to an earthquake load, the auxiliary guide shoe 5 can prevent the rail from coming off.
In addition, by installing the normal guide shoe 4 on the auxiliary guide shoe 5, it is possible to install the normal oil feeder 6.
Similarly, an auxiliary guide shoe can be attached to a lower part of the car between an undercarriage device (not shown) such as an emergency stop and a normal guide shoe.
In this case, FIG. 3 is turned upside down, and a normal fueling device can be installed even in the lower part of the car.
In the above description, the case where the auxiliary guide shoe is attached to the car-side guide device has been described. However, the same effect can be obtained by attaching the same auxiliary guide shoe to the counterweight-side guide device.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic configuration diagram illustrating an elevator derailment prevention device according to Embodiment 1 of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view showing a state when an elevator derailment prevention device according to Embodiment 1 of the present invention receives an earthquake load. It is a schematic block diagram which shows the derailment prevention apparatus of the elevator in Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cage 2 Guide rail 3 Upper beam 4 Normal guide shoe 4a Shoe member 4b Shoe support member 4c Horizontal mounting part 4d Vertical part 4e Upper horizontal part 4f Support shaft 5 Auxiliary guide shoe 5a Auxiliary shoe member 5b Auxiliary shoe support member 5c Spring 5d Horizontal mounting part 5e Vertical part 5f Support shaft 5g Upper horizontal part 6 Normal lubricator

Claims (6)

A normal guide shoe that is provided on the lifting body and guides the lifting body along the guide rail during normal running;
An auxiliary guide shoe that is provided separately from the normal guide shoe and follows the deflection of the guide rail due to the load during an earthquake,
An elevator derailment prevention device characterized by comprising:   The elevator according to claim 1, wherein the auxiliary guide shoe is configured to have a telescopic movable portion longer than a normal guide shoe in order to be able to follow the instantaneous deflection of the guide rail during an earthquake. Rail release prevention device.   2. The elevator rail release preventing apparatus according to claim 1, wherein a normal guide shoe is provided on the upper and lower parts of the elevating body, and an auxiliary guide shoe is provided outside the normal guide shoe.   The elevator derailment prevention apparatus according to claim 1, wherein auxiliary guide shoes are provided at the upper and lower parts of the lifting body, and a normal guide shoe is provided outside the auxiliary guide shoes.   2. An auxiliary guide shoe is provided at the upper and lower parts of the lifting body, a normal guide shoe is provided outside the auxiliary guide shoe, and a normal oil feeder is provided outside the normal guide shoe. The elevator derailment prevention device as described.   The elevator guide rail preventing device according to any one of claims 3 to 5, wherein the normal guide shoe and the auxiliary guide shoe are fastened by overlapping horizontal portions of the shoe support members.

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