Safety device for elevator system and elevator system
AssigneeOtis Elevator Company
InventorsWei Wang, Fujun Yang
Life of this patent
Estimating the term…
Abstract
A safety device for an elevator system, and an elevator system. The elevator system includes a guide rope arranged in a hoistway to be used as a guide rail and a running device running along the guide rope, and the safety device includes a body which is connected to the running device, and a first component and a second component which are provided on the body and define a passage for the guide rope to pass through freely when the running device is in normal operation, the first and second components are configured for clamping the guide rope in the passage when a running speed of the running device exceeds a threshold, to restrict the speed of the running device or stop the running device.
Claims11
A safety device for an elevator system, wherein the elevator system comprises a guide rope arranged in a hoistway to be used as a guide rail and a running device running along the guide rope, and the safety device comprises:
- a body, which is connected to the running device;
- and
- a first component and a second component which are provided on the body and define a passage for the guide rope to pass through freely when the running device is in normal operation, the first and second components are configured for clamping the guide rope in the passage when a running speed of the running device exceeds a threshold, to restrict the speed of the running device or stop the running device;
- wherein the first and second components are arranged opposite to each other to define the passage, and when the running speed of the running device exceeds the threshold, a relative movement between the first and second components occurs so that the internal gap distance of the passage becomes smaller, until the first and second components contact the guide rope and clamp it in the passage;
- wherein both the first component and the second component are configured to move horizontally and vertically relative to the body;
- wherein when the running speed of the running device exceeds the threshold, the second component moves upstream relative to the first component in the running direction of the running device, and when the running device stops, the overlapping length of the first and second components in the running direction is substantially equal to the length of the second component.
A safety device for an elevator system, wherein the elevator system comprises a guide rope arranged in a hoistway to be used as a guide rail and a running device running along the guide rope, and the safety device comprises:
- a body, which is connected to the running device;
- and
- a first component and a second component which are provided on the body and define a passage for the guide rope to pass through freely when the running device is in normal operation, the first and second components are configured for clamping the guide rope in the passage when a running speed of the running device exceeds a threshold, to restrict the speed of the running device or stop the running device;
- wherein the first and second components are arranged opposite to each other to define the passage, and when the running speed of the running device exceeds the threshold, a relative movement between the first and second components occurs so that the internal gap distance of the passage becomes smaller, until the first and second components contact the guide rope and clamp it in the passage;
- wherein both the first component and the second component are configured to move horizontally and vertically relative to the body;
- wherein the body is provided with a guide groove inclined with respect to the running direction, and the safety device comprises an actuating component which is connected to the second component and actuates the second component to travel along the guide groove to generate the relative movement with the first component when the running speed of the running device exceeds the threshold.
A safety device for an elevator system, wherein the elevator system comprises a guide rope arranged in a hoistway to be used as a guide rail and a running device running along the guide rope, and the safety device comprises:
- a body, which is connected to the running device;
- and
- a first component and a second component which are provided on the body and define a passage for the guide rope to pass through freely when the running device is in normal operation, the first and second components are configured for clamping the guide rope in the passage when a running speed of the running device exceeds a threshold, to restrict the speed of the running device or stop the running device;
- wherein the first and second components are arranged opposite to each other to define the passage, and when the running speed of the running device exceeds the threshold, a relative movement between the first and second components occurs so that the internal gap distance of the passage becomes smaller, until the first and second components contact the guide rope and clamp it in the passage;
- wherein both the first component and the second component are configured to move horizontally and vertically relative to the body;
- wherein the corresponding portions of the first component and/or the second component defining the passage are configured to have a non-planar profile.
Dependencies are inferred from the claim text.