Construction lifting device and leaping methods for construction lifting devices

Patent metadata

Field	Value
Publication number	US-12565404-B2
Application number	US-202418828551-A
Country	US
Kind code	B2
Filing date	Sep 9, 2024
Priority date	Sep 11, 2023
Publication date	Mar 3, 2026
Grant date	Mar 3, 2026

Abstract

A construction lifting device and a leaping method for a construction lifting device. The leaping method includes erecting a top crossbeam above a target floor in a shaft; connecting a host platform of the construction lifting device to the top crossbeam by a drive device; raising a car of the construction lifting device close to the host platform and fixedly connecting the car to the host platform; and activating the drive device to lift the host platform to the target floor.

First claim

What is claimed is:

1 . A leaping method for a construction lifting device, the method comprising:
erecting a top crossbeam above a target floor in a shaft; connecting a host platform of the construction lifting device to the top crossbeam by a drive device; raising a car of the construction lifting device close to the host platform and fixedly connecting the car to the host platform; and activating the drive device to lift the host platform to the target floor; wherein the leaping method further includes: before erecting the top crossbeam, lifting the top crossbeam to an installation position using a winch and a rope.

2 . The leaping method according to claim 1 , wherein the connecting the host platform to the top crossbeam by a drive device includes: connecting the host platform to the top crossbeam using fixed pulleys and a climbing rope, and connecting a rope climber to the host platform and threading the climbing rope through the rope climber.

3 . The leaping method according to claim 2 , wherein the leaping method further includes: removing a connection between the host platform and a current floor before activating the drive device, and connecting the host platform to the target floor after the host platform is lifted to the target floor.

4 . A leaping method for a construction lifting device, the method comprising:
erecting a top crossbeam above a target floor in a shaft; connecting a host platform of the construction lifting device to the top crossbeam by a drive device; raising a car of the construction lifting device close to the host platform and fixedly connecting the car to the host platform; and activating the drive device to lift the host platform to the target floor; wherein fixedly connecting the car to the host platform includes: connecting the car to the host platform using a plurality of rigid connecting rods; and connecting the car to the host platform using flexible ropes.

5 . The leaping method according to claim 1 , wherein the leaping method further includes: after erecting the top crossbeam, lifting car guide rails through the winch and the top crossbeam, and installing the car guide rails to extend the car guide rails on side walls on both sides of the shaft to the target floor.

6 . The leaping method according to claim 1 , wherein the erecting a top crossbeam above the target floor in the shaft includes: horizontally arranging the top crossbeam across the shaft between front and rear walls of the shaft.

7 . The leaping method according to claim 1 , wherein the leaping method further includes: extending a compensation chain connected between bottom of a counterweight and that of the car and extending a driving rope connected between the host platform, the counterweight, and the car, before activating the drive device, so that the counterweight remains at the bottom of the shaft during the leaping process of the host platform.

8 . The leaping method according to claim 7 , wherein the method includes: arranging a compensation chain quick release buckle at the bottom of the counterweight; and extending a length of the compensation chain through the quick release buckle at the bottom of the shaft after the car has risen close to the host platform.

9 . The leaping method according to claim 7 , wherein the method also includes: lifting a driving rope spool through the winch and the top crossbeam and arranging it outside a door opening on a lower floor next to the target floor, before extending the driving rope.

10 . The leaping method according to claim 7 , wherein the host platform is provided with a traction machine, and at least one end of the driving rope is connected to the host platform through an adjustable rope head component, where extending the driving rope includes: releasing the driving rope through the adjustable rope head component.

11 . The leaping method according to claim 10 , wherein a fixed end of the driving rope is connected to the host platform through a first rope head component, and the driving rope, starting from the fixed end, is sequentially wound around a counterweight fixed pulley at the top of the counterweight, the traction machine on the host platform, a car fixed pulley at the top of the car, and a second rope head component on the host platform before being wound onto a driving rope spool, where the second rope head component is an adjustable rope head component.

12 . The leaping method according to claim 11 , wherein the second rope head component includes: a rope head body connected to the host platform and comprising an outer wall, an internal cavity defined by the outer wall, a first port and a second port at both ends of the internal cavity, where a size of the internal cavity decreases gradually from the first port to the second port, and a wedge block having a shape that matches the internal cavity and capable of being inserted into the internal cavity from the first port, causing the driving rope to be clamped between the wedge block and the outer wall of the rope head body, wherein, extending the driving rope includes: removing the wedge block, taking out the driving rope from the second rope head component, and releasing the driving rope from the driving rope spool.

13 . The leaping method according to claim 2 , wherein the leaping method further includes arranging a climbing rope as follows: winding a free end of the climbing rope onto a climbing rope spool, then passing through a rope climber connected to a front first position of the host platform, extending upwards to wrap around a second crossbeam fixed pulley on the top crossbeam, extending downwards to wrap around a second platform fixed pulley connected to a front second position of the host platform, extending horizontally to wrap around a first platform fixed pulley connected to a rear second position of the host platform, extending upwards to wrap around a first crossbeam fixed pulley on the top crossbeam, and finally extending downwards to fix to the host platform through a rope hook at a rear first position.

14 . A leaping method for a construction lifting device, the method comprising:
erecting a top crossbeam above a target floor in a shaft; connecting a host platform of the construction lifting device to the top crossbeam by a drive device; raising a car of the construction lifting device close to the host platform and fixedly connecting the car to the host platform; and activating the drive device to lift the host platform to the target floor; wherein the leaping method further includes: extending a speed governor rope between a speed governor and a safety gear lifting mechanism, and lifting and installing the speed governor on car guide rails of the target floor.

15 . The leaping method according to claim 14 , wherein the speed governor is connected with the safety gear lifting mechanism that is connected to the car through a speed governor rope, wherein the speed governor rope includes a first section connected to the speed governor and a second section connected to the safety gear lifting mechanism, where the first section and the second section are each wound into a U-shaped shape through a wire clamp and connected through a ring buckle, and the first section includes a redundant segment retained through the wire clamp, and the leaping method further includes: extending the speed governor rope by adjusting a position of the wire clamp to release the redundant segment.

16 . The leaping method according to claim 3 , wherein the removing a connection between the host platform and the current floor includes retracting front and

Assignees

• Otis Elevator Co

Inventors

• Liu Wenxiang
• Wu Jianfeng
• Shi Chenfeng
• Chen Ming
• Zhu Jiajun
• Song Linfeng

Classifications

• B66B19/02

  Installing or exchanging ropes or cables · CPC title

• B66B19/002

  installing or exchanging guide rails (details of rails B66B7/02) · CPC title

• B66B5/04

  for detecting excessive speed · CPC title

• B66B17/34

  Safe lift clips; Keps · CPC title

• B66B11/008

  with hoisting rope or cable operated by frictional engagement with a winding drum or sheave · CPC title