JP3178109U - Elevator system - Google Patents

Abstract

An elevator system that dissipates energy when elevator cars or counterweights collide with each other or dangerously collide with each other is provided.
The elevator system has a plurality of elevator cars (22, 32) in a hoistway. The counter weight corresponds to each of the elevator cars 22 and 32. The breakable shock absorber 40 corresponds to at least one of the elevator cars 22 and 32, at least one of the counterweights 24, or both. In the disclosed embodiment, the shock absorber actuating element 42 operates to break at least a breakable portion of the breakable shock absorber 40.
[Selection] Figure 2

Description

  The present invention relates generally to elevator systems, and more particularly to the placement of shock absorbers used in elevator systems having a plurality of cars in a hoistway.

  Many elevator systems have a car and a counterweight connected by a rope or other load bearing member. For example, a machine controls the movement of a car to carry passengers to various floors of a building. As is well known, the counterweight and the car usually move in opposite directions in the hoistway.

  Proposals have been made to have multiple elevator cars in a single hoistway. This arrangement provides, for example, the advantage of improved passenger service. Examples of patents relating to elevator systems having multiple cars in a hoistway include US Pat. No. 1,837,643, US Pat. No. 1,896,776, US Pat. No. 5,419,414. No. 5, U.S. Pat. No. 5,584,364 and U.S. Patent Application Publication No. 2003/0075388. Each of these patents differs in the arrangement of components within the elevator system.

  In providing a plurality of elevator cars in a hoistway, various problems are presented. For example, in order to avoid collision between elevator cars, it is necessary to control the movement of the components of the elevator system. Regardless of the design of the elevator system, it is necessary to provide for the possibility of collision between elevator cars or counterweights. Specifically, it is necessary to incorporate a shock absorber that absorbs the energy of collision between elevator cars or counterweights.

  Elevator systems typically have a shock absorber in the bottom or pit of the hoistway. Conventional elevator system shock absorbers are generally spring-loaded. If the elevator car or counterweight makes an undesired movement toward the bottom of the hoistway and the governor or brake device cannot control this downward movement, the coil spring or oil-filled cylinder is Absorbs the energy of the car or counterweight. Conventional elevator system shock absorbers are relatively large, heavy and expensive. Therefore, it is not desirable to incorporate a conventional shock absorber arrangement into an elevator system having two elevator cars in a hoistway to absorb energy during collisions between elevator cars or counterweights.

  In an elevator system having two elevator cars in a hoistway, an economical and effective arrangement for absorbing energy is required when elevator cars or counterweights collide with each other. The present invention addresses this need.

  An exemplary elevator system has a first elevator car supported to move up and down in a hoistway. The second elevator car located below the first elevator car moves up and down in the hoistway independently of the first elevator car. At least one frangible shock absorber supported on at least one elevator car of the first and second elevator cars is at least partially broken so that the shock absorber and the buffer in the other elevator car Absorbs energy during contact with the part corresponding to the vessel.

  In one embodiment, the other elevator car supports at least one shock absorber activator that contacts the breakable shock absorber and breaks the breakable portion of the breakable shock absorber.

  In one embodiment, a plurality of breakable shock absorbers are supported on one elevator car and a plurality of shock absorber actuation elements are supported on the other elevator car.

  With the breakable shock absorber arrangement of the disclosed embodiment, in an elevator system with multiple elevator cars in the hoistway, energy is saved when elevator cars or counterweights collide or are likely to collide with each other. Absorbed effectively and effectively.

1 is a schematic view of some of the components of an elevator system having a plurality of elevator cars in a hoistway and a breakable shock absorber. Schematic which shows an example of a structure of the shock absorber which can be fractured | ruptured, and the element for an operation | movement.

  FIG. 1 schematically illustrates a portion of an elevator system 20. The first elevator car 22 is coupled to the first counterweight 24 and moves in the hoistway 26 together with the first counterweight 24. Although not shown in FIG. 1, the first elevator car 22 is coupled to the first counterweight 24 by a plurality of ropes or belts as is well known. Referring to the figure, the second elevator car 32 is located below the first elevator car 22. As is known, the second elevator car 32 is coupled to the second counterweight 34 and moves in the hoistway 26 together with the second counterweight 34.

  In this embodiment, the counterweights 24 and 34 move along a common guide rail 36. That is, the counterweights 24 and 34 share the same guide rail.

  Another feature of the elevator system 20 shown schematically in FIG. 1 is that at least one frangible shock absorber 38 is supported on at least one of the counterweights 24, 34, the shock absorber being It functions to absorb the impact when the counterweights come into contact with each other. The other counterweight (in this embodiment, the second counterweight 34) includes a shock absorber activator 39. For example, the shock absorber actuating element 39 interacts with the breakable shock absorber 38 when the counterweights 24, 34 collide or are likely to collide. That is, when the counterweights 24 and 34 collide or are likely to collide, the shock absorber actuating element 39 functions to break at least the breakable portion of the breakable shock absorber 38 so that the counterweight 24 , 34 to dissipate energy.

  In the example of FIG. 1, the second elevator car 32 includes a plurality of breakable dampers 40 that face the first elevator car 22. The first elevator car 22 supports a plurality of shock absorber actuating elements 42 corresponding to the shock absorbers 40.

  In FIG. 2, one elevator car 32 supports a plurality of breakable shock absorbers 40, and the other elevator car 22 supports a plurality of shock absorber operating elements 42 corresponding to the shock absorbers 40. Is schematically illustrated. As schematically shown in FIG. 2, each elevator car has a car room 50 supported by a frame 52 in a known manner. The frame 52 and the various members of the frame 52 are conventional. Each frame 52 has an upper frame 54 and a lower frame 56 as is well known.

  In the illustrated example, the breakable shock absorber 40 includes a shock absorber support 60, which is supported by the upper casing 54 of the second elevator car 32. In this example, the breakable portion of the breakable shock absorber 40 extends upward beyond the upper frame 54. The shock absorber operating element 42 is supported in the vicinity of the frame 56 of the frame 52 of the first elevator car 22. In one embodiment, the shock absorber actuating element 42 is at least partially supported between two drafts 56. Of course, the arrangement of the breakable shock absorber 40 and the shock absorber actuating element 42 may be reversed and supported by different elevator cars. In other embodiments, each car may include at least one shock absorber and at least one shock absorber actuating element corresponding to the shock absorber.

  The exemplary shock absorber actuation element 42 has a plunger with a tip 64 and a wedge-shaped portion 66. In this embodiment, the tip 64 penetrates the tip surface 68 of the breakable shock absorber 40 when the shock absorber actuating element 42 and the breakable shock absorber 40 contact with sufficient force. Thereby, as the elevator car 22 and the elevator car 32 approach, the wedge-shaped portion 66 gradually divides the breakable shock absorber 40. By breaking the breakable shock absorber 40 and gradually deforming the shock absorber 40, the energy when the elevator car 22 and the elevator car 32 collide or dangerously collide is dissipated.

  In one embodiment, the breakable shock absorber 40 is a single use disposable device that is at least partially broken by interacting with a corresponding shock absorber actuating element 42. Will be replaced. If the possibility of collision or dangerous collision between elevator cars or counterweights is minimal, the exchange of breakable shock absorbers is also minimal. Thus, the exemplary breakable shock absorber arrangement of the present application is much more economical than conventional coil spring shock absorbers or hydraulic elevator shock absorbers that are typically located in the elevator pit. is there.

  Another economic advantage of this embodiment is that there is no need to check or electrically monitor that the shock absorber is ready for use. As a check of whether the hydraulic shock absorber is operational, it is necessary to periodically check or electrically monitor the hydraulic shock absorber to ensure that the refueling level and piston position conditions are valid. Such monitoring is expensive and undesirable, for example, when a hydraulic shock absorber is attached to the counterweight. A breakable shock absorber as used in this example is much less costly because simple visual inspection can confirm that the working part of the shock absorber is intact.

  In one embodiment, breakable shock absorber 40 has a metal tube that is divided into at least two parts in response to interaction with shock absorber actuating element 42. Also, in one embodiment, each time the breakable shock absorber is replaced, the shock absorber actuating element 42 must be replaced.

  In one embodiment, the counterweight shock absorber 38 and shock absorber actuating element 39 are essentially the same as the shock absorber and shock absorber actuating elements used in the elevator car. In another embodiment, the elevator car shock absorber type is different from the shock absorber type used for the counterweight.

  Those skilled in the art will know from the description herein what materials and configurations are necessary and optimal for providing a breakable shock absorber in an elevator system having a plurality of cars in a hoistway.

  The foregoing description is exemplary and is not intended to limit the invention. Those skilled in the art will appreciate that changes and modifications can be made to the disclosed embodiments without departing from the essence of the invention. The scope of legal protection given to this invention can only be determined by studying the claims.

Claims (14)

A first elevator car supported to move up and down in the hoistway;
A second elevator car located below the first elevator car and supported so as to move up and down in the hoistway independently of the first elevator car;
At least one breakable shock absorber supported on at least one elevator car of the first and second elevator cars;
With
The breakable shock absorber has at least a portion to absorb energy when the shock absorber contacts a portion of the first and second elevator cars corresponding to the shock absorber in the other elevator car. Elevator system, characterized in that it is ruptured. Comprising at least one shock absorber actuating element supported on said other elevator car;
The elevator system according to claim 1, wherein the shock absorber actuating element breaks a breakable portion of the breakable shock absorber when contacting the breakable shock absorber.   The elevator system according to claim 2, further comprising a plurality of breakable shock absorbers and a plurality of shock absorber actuating elements corresponding to the shock absorbers.   The shock absorber actuating element has a plunger. When the breakable shock absorber and the shock absorber actuating element are in contact with each other, the plunger gradually increases the breakable portion as the elevator cars gradually approach each other. The elevator system according to claim 2, wherein the elevator system breaks. Each elevator car has a frame, the frame having an upper frame along the upper edge of the frame and a lower frame along the lower edge of the frame;
2. The elevator according to claim 1, wherein the breakable shock absorber is supported in the vicinity of one of the upper side of the second elevator car and the lower side of the first elevator car. system. A shock absorber operating element supported in the vicinity of at least one of the lower case of the first elevator car and the upper case of the second elevator car;
6. The shock absorber actuating element breaks at least a breakable portion of the breakable shock absorber when the shock absorber actuating element and the breakable shock absorber contact each other. The elevator system described in. A first counterweight in the hoistway coupled with the first elevator car and moving with the first elevator car;
A second counterweight located above the first counterweight in the hoistway and coupled with the second elevator car and moving with the second elevator car;
A breakable shock absorber for at least one counterweight supported by at least one of the first and second counterweights;
With
The breakable shock absorber has at least a portion so as to absorb energy when the shock absorber and a portion corresponding to the shock absorber in the other counterweight of the first and second counterweights contact each other. The elevator system according to claim 1, wherein the elevator system is partially broken. A shock absorber actuating element supported by the other counterweight;
8. The elevator system according to claim 7, wherein the shock absorber actuating element breaks a breakable portion of the breakable shock absorber when in contact with the breakable shock absorber for the counterweight. . A first elevator car supported to move up and down in the hoistway;
A first counterweight coupled to the first elevator car and moving with the first elevator car in the hoistway;
A second elevator car positioned below the first elevator car and supported to move up and down the hoistway independently of the first elevator car;
A second counterweight located above the first counterweight, coupled to the second elevator car and moving with the second elevator car in the hoistway;
At least one breakable shock absorber supported on at least one elevator car of the first and second elevator cars or at least one counterweight of the first and second counterweights;
With
The at least one breakable shock absorber has at least a portion to absorb energy when the breakable shock absorber contacts a portion of the other elevator car or the counterweight corresponding to the shock absorber. Elevator system, characterized in that it is ruptured. Comprising at least one shock absorber operating element supported by the other elevator car or the other counterweight;
10. The elevator system of claim 9, wherein the at least one shock absorber actuating element breaks a breakable portion of the breakable shock absorber upon contact with the breakable shock absorber.   The elevator system according to claim 10, comprising a plurality of breakable shock absorbers and a plurality of shock absorber actuating elements corresponding to the shock absorbers.   The shock absorber actuating element has a plunger, and the plunger gradually approaches the elevator cars or the counterweights when the breakable shock absorber and the shock absorber actuating element come into contact with each other. The elevator system according to claim 10, wherein the breakable portion is gradually broken. Comprising at least one breakable shock absorber in at least one elevator car of the elevator car;
The elevator system according to claim 9, wherein at least one of the counterweights includes at least one breakable shock absorber.   The elevator system according to claim 9, wherein the at least one elevator car includes a plurality of breakable shock absorbers.

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