CN-121849766-A - Elevator dismounting method

CN121849766ACN 121849766 ACN121849766 ACN 121849766ACN-121849766-A

Abstract

The application relates to an elevator disassembly method. According to the elevator dismantling method, various connecting parts of the elevator car are dismantled, then the counterweight block is dismantled, so that the elevator car of the elevator can be hoisted downwards by using a traction system of the elevator under the drive of gravity, when the elevator car moves downwards from top to bottom, a main guide rail, an auxiliary guide rail and a well part in a well are dismantled, when the elevator car and the counterweight block meet, a counterweight guide mechanism is arranged on the counterweight block, then all the main guide rail, the auxiliary guide rail and the well part are continuously dismantled, and a winch is arranged at a machine room to lower the counterweight block and recover a steel wire rope, so that the dismantling is completed. The elevator dismounting method has the advantages of simple dismounting steps and high efficiency.

Inventors

LIU CHUANG
LIANG JIEYONG
PENG CHAOXIAN
HUANG ZHAOMING

Assignees

日立电梯（中国）有限公司
日立电梯（中国）有限公司

Dates

Publication Date: 20260414
Application Date: 20241011
Priority Date: 20241011

Claims (10)

1. The elevator disassembling method is characterized by comprising the following steps: Confirming that the linkage of the safety tongs of the removed elevator and the speed limiter can effectively act; removing the connecting part of the lift car, and removing the counterweight block in the counterweight frame to enable the lift car and the counterweight frame to reach a balanced state, or enabling the lift car to be heavier than the counterweight frame; Releasing a compensation cable, a compensation chain and a compensation steel wire rope of the elevator; The elevator car draws the trailing cable to the elevator car roof at the bottom of the elevator shaft, and coils the trailing cable to the elevator car roof or the elevator car in the process of moving the elevator car to the elevator shaft roof; when the lift car reaches the top of the well, the power is cut off, a traction system of the lift is utilized to lower the jigger and the main guide rail, the auxiliary guide rail and the well part are detached; when the elevator dismantling operation is carried out to meet the counterweight frame, a counterweight guiding mechanism is arranged on the counterweight frame; continuously turning down and dismantling all the main guide rail, the auxiliary guide rail and the well parts; Dismantling a speed limiter steel wire rope; a stranding mill is arranged at the machine room, and part of the traction steel wire rope is recovered by the stranding mill; After the counterweight frame is lowered to the bottom of the hoistway by using the residual traction steel wire ropes of the elevator, all the traction steel wire ropes are recovered; dismantling a counterweight frame, a lift car and pit parts in a pit, and dismantling a host, a control cabinet and machine room parts in a machine room; and finishing the disassembled parts, and finishing the disassembling operation.
2. The elevator removal method of claim 1, wherein the counterweight guide mechanism is a limit guide wheel when any of the following conditions occur in the hoistway: The well is normal and smooth, and the side wall of the well is free from bulges or depressions; The height of the wall body protruding part of the wall body of the counterweight side shaft is larger than or equal to the height of the counterweight frame, and the protruding amount of the wall body is smaller than or equal to 90mm; the height of the protruding part of the wall body of the shaft wall on the counterweight side is smaller than the height of the counterweight frame, and the protruding amount of the wall body is smaller than or equal to 70mm; The wall body of the counterweight side shaft is provided with a concave position, and the concave depth is smaller than or equal to 90mm.
3. The elevator detachment method according to claim 2, characterized in that it further comprises the steps of, when installing the counterweight guide mechanism: When the upper guide shoe of the counterweight frame completely leaves the auxiliary guide rail, the upper guide shoe of the counterweight frame is dismounted; the upper part of the counterweight frame is provided with a limit guide wheel; when the lower guide shoe of the counterweight frame completely leaves the auxiliary guide rail, the lower guide shoe of the counterweight frame is dismounted; A lower limit guide wheel is arranged at the lower part of the counterweight frame, and an upper limit guide wheel and a lower limit guide wheel are arranged at the same side of the counterweight frame; Checking whether the counterweight guide mechanism is installed correctly, and lightly supporting the counterweight housing by hand to stabilize the counterweight housing and keep the counterweight housing in a natural state, and continuing the dismantling operation.
4. The elevator detachment method of claim 1, characterized in that the counterweight guide mechanism is a guide wire rope, and in that the installation further comprises the steps of: opening holes in the floor plates of the machine room, and arranging guide steel wire ropes in a hoistway through the opening holes; The redundant guide steel wire ropes are properly placed in a machine room, and one ends of the guide steel wire ropes are clamped on the ground of the machine room by using the fastened steel wire ropes; The other end of the guide steel wire rope is connected and fixed on angle irons or angle iron yards of the wall of the hoistway at the counterweight side through a basket, so that the counterweight frame is limited by the guide steel wire rope to a transverse position.
5. The elevator detachment method of claim 4, further comprising the steps of: Before operation, checking and confirming the tension of the guide steel wire rope, and tightening the two flower baskets when the tension is insufficient, so as to keep the tensioning force to meet the requirement.
6. The elevator detachment method of claim 4, further comprising the step of, upon installation of the guide wire rope: connecting one end of the guide steel wire rope in the machine room with the auxiliary steel wire rope through a steel wire rope clamp; the guide steel wire rope and the auxiliary steel wire rope are clamped and arranged in the open holes of the machine room floor slab.
7. The elevator detachment method of claim 1, further comprising the step of, upon removal of the governor rope: Setting down the speed limiter heavy hammer; Cleaning elevator dismantling parts stored at a top layer reserved gate; Cutting off the speed limiter wire rope at the top of the car; And (5) pulling the speed limiter wire rope up the machine room for dismantling and recycling.
8. The elevator detachment method of claim 1, further comprising the step of, upon removal of the hoisting wire rope: a protective assembly is arranged at a top layer reserved gate; fixing the first traction steel wire rope and the second traction steel wire rope on the third traction steel wire rope by using a steel wire rope clamp above the car roof diverting pulley; cutting off the first traction wire rope and the second traction wire rope; Pulling the cut first traction steel wire rope and the cut second traction steel wire rope out of the landing door from the top reserved gate; Cutting off the car sides of the cut-off first traction steel wire rope and the cut-off second traction steel wire rope at the rope head, and loosening the steel wire rope clamp; Cutting off the counterweight sides of the cut first traction steel wire rope and the cut second traction steel wire rope at the floor surface of the machine room; Lowering the cut first traction steel wire rope and the cut second traction steel wire rope to the top layer for dismantling; Fixing the third traction steel wire rope on the fourth traction steel wire rope at the counterweight side of the machine room by using a steel wire rope clamp; Using ropes to wind the frame beams to the rope head taper sleeve on the side of the car; Confirming that the rope is bound with the third traction steel wire rope, and tensioning the rope; Loosening the side rope head of the third traction steel wire rope car, and putting down the third traction steel wire rope in a well; The third traction steel wire rope is put down to the bottommost layer and coiled outside the hall until the third traction steel wire rope is put down completely, and the hemp rope is recovered to the machine room; Placing the grinding machine between two frame beams at the front side of the main machine, and encircling the grinding machine at the frame beams of the main machine by using a steel wire rope or a fastener for fixing; taking the third lowered traction steel wire rope as a counterweight hanging steel wire rope for lowering a counterweight frame, and rewinding the counterweight hanging steel wire rope onto a main machine traction wheel and a wringing machine; The counterweight frame is coiled upwards through the cooperation of the wringing machine and the host machine, and the third traction steel wire rope bypasses the wringing machine and is fixed at the rope end, and then the rest traction steel wire ropes are continuously removed; and removing the side plate of the car top diverting pulley, and taking out the third traction steel wire rope.
9. The method of dismantling an elevator according to claim 8, characterized in that when winding a counterweight suspension wire rope, it comprises the steps of: Taking the lowered third traction steel wire rope as a counterweight hanging steel wire rope for lowering a counterweight frame, drawing up the third traction steel wire rope, and penetrating upwards in a U shape on the counterweight side of a main machine guide wheel; the third traction steel wire rope is pulled to a grinder at the front side of the main machine after bypassing the guide wheel and the traction wheel in a U-shaped manner; Sleeving the third traction steel wire rope into a winch of a winch machine in a U shape and rewinding; after rewinding, the drawn third traction steel wire rope is put back into the well; Inspection confirms that the third hoisting ropes do not cross and completely enter the traction sheave and the sheave rope grooves.
10. The method of disassembling an elevator according to claim 1, further comprising the step of, when lowering the counterweight housing: Energizing a grinding machine; the operator holds the end of the steel wire rope which has passed by the winch of the winch by hand; and (3) running the wringing machine, and conveying the steel wire rope downwards by the cooperation of hands until the counterweight frame is conveyed downwards to the ground of the pit.

Description

Elevator dismounting method Technical Field The application relates to the technical field of elevators, in particular to an elevator disassembly method. Background The types of elevators at present can be classified into elevators with machine room and elevators without machine room. The machine room with the machine room elevator is usually arranged on the top layer of a building, and main equipment in the machine room is a traction machine and a control cabinet. The existing disassembly methods of the elevator with the machine room can be roughly divided into two types, and one disassembly mode is to disassemble the elevator by arranging a scaffold, namely after the elevator car is moved to the top layer, the elevator car is fixed by utilizing the brake function of the elevator safety tongs, the scaffold is erected in a hoistway of the elevator, and the disassembly operation of the elevator is started according to the reverse order of elevator installation. The disassembly mode needs to communicate and check the scaffold in advance, and has the defects of complex operation and low efficiency. The other disassembly mode is to hoist the lift car to disassemble the lift by arranging lifting equipment such as a cable climbing device, wherein the cable climbing device is arranged at the top end of a well and is connected with the lift car through a steel wire rope, and after the traction steel wire rope of the lift is cut off, the lift car is lifted by the cable climbing device to move up and down to disassemble the lift. The mode needs to additionally install the cable climbing device, and has the defects of high equipment cost, complex operation and low efficiency. Disclosure of Invention Based on the problems, the elevator disassembly method is complex in operation and low in efficiency. An elevator disassembly method, comprising the following steps: Confirming that the linkage of the safety tongs of the removed elevator and the speed limiter can effectively act; removing the connecting part of the lift car, and removing the counterweight block in the counterweight frame to enable the lift car and the counterweight frame to reach a balanced state, or enabling the lift car to be heavier than the counterweight frame; Releasing a compensation cable, a compensation chain and a compensation steel wire rope of the elevator; The elevator car draws the trailing cable to the elevator car roof at the bottom of the elevator shaft, and coils the trailing cable to the elevator car roof or the elevator car in the process of moving the elevator car to the elevator shaft roof; when the lift car reaches the top of the well, the power is cut off, a traction system of the lift is utilized to lower the jigger and the main guide rail, the auxiliary guide rail and the well part are detached; when the elevator dismantling operation is carried out to meet the counterweight frame, a counterweight guiding mechanism is arranged on the counterweight frame; continuously turning down and dismantling all the main guide rail, the auxiliary guide rail and the well parts; Dismantling a speed limiter steel wire rope; a stranding mill is arranged at the machine room, and part of the traction steel wire rope is recovered by the stranding mill; After the counterweight frame is lowered to the bottom of the hoistway by using the residual traction steel wire ropes of the elevator, all the traction steel wire ropes are recovered; dismantling a counterweight frame, a lift car and pit parts in a pit, and dismantling a host, a control cabinet and machine room parts in a machine room; and finishing the disassembled parts, and finishing the disassembling operation. In one embodiment, the counterweight guide mechanism is a limit guide wheel when any of the following conditions occurs in the hoistway: The well is normal and smooth, and the side wall of the well is free from bulges or depressions; the height of the wall body protruding part of the wall body of the counterweight side well is larger than or equal to the height of the counterweight frame, and the protruding amount of the wall body is smaller than or equal to 90mm; the height of the protruding part of the wall body of the shaft wall at the counterweight side is smaller than the height of the counterweight frame, and the protruding amount of the wall body is smaller than or equal to 70mm; The wall body of the counterweight side shaft is provided with a concave position, and the concave depth is smaller than or equal to 90mm. In one embodiment, the method further comprises the following steps when installing the counterweight guiding mechanism: When the upper guide shoe of the counterweight frame completely leaves the auxiliary guide rail, the upper guide shoe of the counterweight frame is dismounted; the upper part of the counterweight frame is provided with a limit guide wheel; when the lower guide shoe of the counterweight frame completely leaves the auxiliary guide rail, the lower guide sho