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EP-4741332-A1 - LINKAGE OPERATING DEVICE FOR ELEVATOR SYSTEM AND ELEVATOR SYSTEM

EP4741332A1EP 4741332 A1EP4741332 A1EP 4741332A1EP-4741332-A1

Abstract

The disclosure relates to a linkage operating device for an elevator system and an elevator system. The linkage operating device comprises: a base, arranged on an elevator car; a detection portion, arranged on the elevator car and connected to a controller in the elevator system; and an operating portion, configured to be operatively engaged with the base at least in a first position or a second position, wherein the operating portion is in the first position during normal operation of the elevator system, and when the operating portion is operated to disengage from the first position, the detection portion generates a first signal to be provided to the controller to control the elevator system into a stop state; and when the operating portion is operated to be in the second position, the detection portion generates a second signal, and when the detection portion detects that a protective device located at a top of the elevator car is in a working position and defines a car roof protection area, the detection portion generates a third signal for the controller to control the elevator system into a maintenance state according to the second and third signals, and the operating portion is configured to come into contact with a blocking device located in a preset position in an elevator hoistway to prevent the elevator car from travelling when the elevator car is running in the maintenance state.

Inventors

  • LI, YINGJIE
  • LIU, YUE
  • FU, HONG

Assignees

  • Otis Elevator Company

Dates

Publication Date
20260513
Application Date
20251030

Claims (15)

  1. A linkage operating device for an elevator system, comprising: a base, arranged on an elevator car; a detection portion, arranged on the elevator car and connected to a controller in the elevator system; and an operating portion, configured to be operatively engaged with the base at least in a first position or a second position, wherein the operating portion is in the first position during normal operation of the elevator system, and when the operating portion is operated to disengage from the first position, the detection portion generates a first signal to be provided to the controller to control the elevator system into a stop state; and when the operating portion is operated to be in the second position, the detection portion generates a second signal, and when the detection portion detects that a protective device located at a top of the elevator car is in a working position and defines a car roof protection area, the detection portion generates a third signal for the controller to control the elevator system into a maintenance state according to the second signal and the third signal, and the operating portion is configured to come into contact with a blocking device located in a preset position in an elevator hoistway to prevent the elevator car from travelling when the elevator car is running in the maintenance state.
  2. The linkage operating device for an elevator system according to claim 1, wherein the base is arranged at the top of the elevator car and provided with at least a first mating portion and a second mating portion, the operating portion being in the first position when engaged with the first mating portion and in the second position when engaged with the second mating portion.
  3. The linkage operating device for an elevator system according to claim 2, wherein the base is provided with a first through-hole and a second through-hole closer to an outer side of the elevator car with respect to the first through-hole, and the operating portion comprises: a first rod, having a first end and a second end opposite to each other, and configured to movably pass through the first through-hole and the second through-hole; and a second rod, connected to the first rod and operable to engage with the first mating portion or the second mating portion, wherein when the second rod is engaged with the first mating portion, a second end of the first rod does not exceed the second through-hole, or a portion of the second end of the first rod extending outward beyond the second through-hole does not come into contact with the blocking device when the elevator car is running in the maintenance state; when the second rod is engaged with the second mating portion, the portion of the second end of the first rod extending outward beyond the second through-hole is capable of coming into contact with the blocking device when the elevator car is running in the maintenance state.
  4. The linkage operating device for an elevator system according to claim 3, wherein the first mating portion and the second mating portion are located between the first through-hole and the second through-hole, the first mating portion and the second mating portion are provided on a side wall of the base and configured as slots, and the second rod is engaged with the base when operatively placed in the slots.
  5. The linkage operating device for an elevator system according to claim 3 or 4, wherein the first rod is configured with a stepped shaft structure, a diameter of the first end is greater than a diameter of the second end, and a diameter of an end portion of the first end is greater than a diameter of the first through-hole.
  6. The linkage operating device for an elevator system according to claim 5, wherein the stepped shaft structure is configured such that when the operating portion is operated to be in the second position, a surface of the stepped shaft structure triggers the detection portion to generate the second signal.
  7. The linkage operating device for an elevator system according to any of claims 3 to 6, wherein the second end of the first rod is configured with a first plane and/or a second plane, the first plane is configured to come into contact with a first blocking device located at a first preset distance from the top in the elevator hoistway, and the second plane is configured to come into contact with a second blocking device located at a second preset distance from the bottom in the elevator hoistway.
  8. The linkage operating device for an elevator system according to any of claims 1 to 7, wherein the detection portion comprises: a first detection member, arranged on the base and/or the operating portion and/or the protective device and/or the elevator car, for generating the first signal; a second detection member, arranged on the base and/or the operating portion and/or the elevator car, for generating the second signal; and a third detection member, arranged on the elevator car and/or the protective device, for generating the third signal.
  9. The linkage operating device for an elevator system according to claim 8, wherein the first detection member and/or the second detection member and/or the third detection member comprises a contact switch.
  10. The linkage operating device for an elevator system according to any of claims 1 to 9, wherein the protective device is configured to be in an initial non-working position during normal operation of the elevator system, and when the operating portion is operated to be in the second position and the protective device is operated to enter the working position from the non-working position, the detection portion generates the third signal.
  11. The linkage operating device for an elevator system according to claim 10, wherein the protective device comprises a guardrail which is placed horizontally at the top of the elevator car in the non-working position and defines the car roof protection area when fixed vertically in position at the top of the elevator car in the working position.
  12. The linkage operating device for an elevator system according to claim 11, wherein the guardrail is configured as a folding guardrail which is at least partially folded when in the non-working position and at least partially extended in the working position.
  13. The linkage operating device for an elevator system according to any of claims 1 to 12, wherein the blocking device is provided on an inner side wall of the elevator hoistway or on an elevator guide rail in the elevator hoistway, and/or the blocking device comprises a bracket and a contact member provided on the bracket and having an elastic portion for contacting the operating portion.
  14. An elevator system, comprising: an elevator car, configured to travel in an elevator hoistway; a protective device, arranged at a top of the elevator car to define a car roof protection area; a blocking device, arranged in a preset position in the elevator hoistway for blocking the elevator car from traveling; and the linkage operating device for an elevator system according to any of claims 1-13.
  15. The elevator system according to claim 14, wherein the elevator system comprises a home lift.

Description

The present disclosure relates to the technical field of elevators, in particular to a linkage operating device for an elevator system and an elevator system. At present, elevator equipment has been installed and used in many places such as high-rise buildings, stations, airports, private clubs, and family villas, which can greatly facilitate people's daily work, life, and travel. Based on the considerations of safe operation, inspection, and maintenance of elevator equipment, there are usually corresponding requirements for the top floor height and pit depth of the elevator hoistway. In addition, specialized mechanical blocking devices can be installed in the positions near the upper top floor and the lower pit in the elevator hoistway to ensure the minimum safe space between the car roof and the pit, in order to provide safety and error prevention measures for elevator operation, thereby reducing the risks of accidents such as elevator car roof or floor bumps. The present application has found upon research that the existing mechanical blocking devices of this kind have problems such as difficulty in installation and maintenance operations, large weight, high cost, and lack of safety protection linkage with other devices in the elevator system, especially in application environments with relatively small top floor and/or pit sizes, such as home lifts installed in private residences such as villas. In view of the foregoing, the present disclosure provides a linkage operating device for an elevator system and an elevator system, so as to solve or at least alleviate one or more of the aforementioned problems and other problems in the prior art, or to provide alternative solutions for the prior art. Firstly, according to one aspect of the present disclosure, a linkage operating device for an elevator system is provided, comprising: a base, arranged on an elevator car;a detection portion, arranged on the elevator car and connected to a controller in the elevator system; andan operating portion, configured to be operatively engaged with the base at least in a first position or a second position, wherein the operating portion is in the first position during normal operation of the elevator system, and when the operating portion is operated to disengage from the first position, the detection portion generates a first signal to be provided to the controller to control the elevator system into a stop state; andwhen the operating portion is operated to be in the second position, the detection portion generates a second signal, and when the detection portion detects that a protective device located at a top of the elevator car is in a working position and defines a car roof protection area, the detection portion generates a third signal for the controller to control the elevator system into a maintenance state according to the second signal and the third signal, and the operating portion is configured to come into contact with a blocking device located in a preset position in an elevator hoistway to prevent the elevator car from travelling when the elevator car is running in the maintenance state. Particular embodiments further may include at least one, or a plurality of, the following optional features, alone or in combination with each other: In a linkage operating device for an elevator system according to the present disclosure, optionally, the base is arranged at the top of the elevator car and provided with at least a first mating portion and a second mating portion, the operating portion being in the first position when engaged with the first mating portion and in the second position when engaged with the second mating portion. In a linkage operating device for an elevator system according to the present disclosure, optionally, the base is provided with a first through-hole and a second through-hole closer to an outer side of the elevator car with respect to the first through-hole, and the operating portion comprises: a first rod, having a first end and a second end opposite to each other, and configured to movably pass through the first through-hole and the second through-hole; anda second rod, connected to the first rod and operable to engage with the first mating portion or the second mating portion, wherein when the second rod is engaged with the first mating portion, a second end of the first rod does not exceed the second through-hole, or a portion of the second end of the first rod extending outward beyond the second through-hole does not come into contact with the blocking device when the elevator car is running in the maintenance state; when the second rod is engaged with the second mating portion, the portion of the second end of the first rod extending outward beyond the second through-hole is capable of coming into contact with the blocking device when the elevator car is running in the maintenance state. In a linkage operating device for an elevator system according to the present disclosure, opti