CN110668294B

CN110668294B - Machine-room-less elevator dismantling method

Info

Publication number: CN110668294B
Application number: CN201910887622.3A
Authority: CN
Inventors: 钱满发
Original assignee: Beijing Fangdi Tianyu Special Equipment Installation Engineering Co ltd
Current assignee: Beijing Fangdi Tianyu Special Equipment Installation Engineering Co ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2021-11-12
Anticipated expiration: 2039-09-19
Also published as: CN110668294A

Abstract

The invention discloses a machine-room-less elevator dismantling method, which comprises the following steps: s1: entering an initial disassembly position, and driving the counterweight to leave the bottom of the counterweight guide rail; s2: installing a traction facility, comprising the following processes of arranging a support at the bottom of a counterweight guide rail; installing a hoisting device; s3: the dismantling operation comprises the following processes that the lift car is driven to move upwards through the hoisting device, the counterweight moves downwards to be compacted, the hoisting rope is loosened, and the hoisting rope is mechanically broken and dismantled; dismantling the traction machine; sequentially removing the parts in the shaft from top to bottom; and dismantling the car and the counterweight. The machine room free elevator dismantling method has the characteristic of fast dismantling the facilities in the shaft.

Description

Machine-room-less elevator dismantling method

Technical Field

The invention relates to the technical field of elevator disassembly and assembly, in particular to a machine-room-less elevator disassembling method.

Background

The elevator is a common device in the prior art and is widely applied to buildings with higher floors. It can be divided into an elevator with a machine room and an elevator without a machine room according to the installation space of the elevator. The machine room of a machine room elevator is usually arranged at the top floor of a house, and the main devices in the machine room are a traction machine and a control cabinet. The biggest difference between the elevator without the machine room and the elevator with the machine room is that the equipment in the machine room is miniaturized as much as possible on the premise of keeping the original performance by utilizing the modern production technology, so that the machine room with the elevator with the machine room is cancelled, and the equipment is small enough to be installed into the main equipment by utilizing the space on the top of the elevator shaft or the side of the elevator shaft as little as possible.

At present, the dismantling process of the elevator with the machine room has mature technology and related processes in the industry, but the related dismantling process of the elevator without the machine room has less records.

Disclosure of Invention

The invention aims to provide a machine-room-less elevator dismantling method which has the characteristic of quickly dismantling facilities in a hoistway.

The above object of the present invention is achieved by the following technical solutions:

a machine-room-less elevator dismantling method comprises the following steps:

s1: entering an initial disassembly position, and driving the counterweight to leave the bottom of the counterweight guide rail;

s2: the installation of the towing installation, comprising the following procedures,

arranging a support at the bottom of the counterweight guide rail;

installing a hoisting device;

s3: the dismantling operation, including the following processes,

the lift car is driven to move upwards through the hoisting device, the counterweight moves downwards to be compacted, the hoisting rope is loosened, and the hoisting rope is mechanically broken and disassembled;

dismantling the traction machine;

sequentially removing the parts in the shaft from top to bottom;

and dismantling the car and the counterweight.

By adopting the technical scheme, the lift car is driven to move by utilizing the hoisting device which is arranged later, so that after the hoisting rope is loosened, the operations of separating the lift car from the counterweight, breaking and detaching the cable, detaching the speed limiter and the steel wire rope thereof and the like can be carried out subsequently, a complex scaffold does not need to be built, the construction period is shortened, the cost is lower, and the related process of detaching the elevator without a machine room in the industry is supplemented.

The invention is further configured to: before the dismantling operation of S3, the method also comprises a step of arranging protective measures, which comprises the installation of a safety rope and is mainly taken from the following processes:

a safety rope is fixed at the steel structure of the top hall door;

the safety rope is fixedly connected with a car girder.

Through adopting above-mentioned technical scheme, insurance rope one end is fixed on the steel construction, and the other end is fixed on the car girder, prevents that hoisting apparatus is malfunctioning to cause the car to fall.

The invention is further configured to: the step of arranging the protective measures also comprises secondary safety measures which are mainly taken from the following processes that a pair of limiting ropes is respectively arranged on the left side and the right side of the car girder, the limiting ropes penetrate through a gap between the car guide rail and the shaft wall, and two ends of the limiting ropes are fixed on the car girder.

By adopting the technical scheme, the rope head of the limiting rope bypasses the car girder, the rope head is fixed by the U-shaped clamp after being pressed, the limiting rope can be clamped on the intersection point of the car track and the track support when the car falls, the car is prevented from continuously falling, and the personal safety of constructors is ensured.

The invention is further configured to: the installation hoisting apparatus includes:

hanging a steel wire rope rigging on a lifting hook close to the middle of the top of the hoistway;

an electric hoist is hung on the steel wire rope rigging;

and hanging a girder of the lift car on a lifting hook of the electric hoist.

Through adopting above-mentioned technical scheme, electric block has characteristics such as small, the dead weight is light, easy operation, convenient to use, utilizes electric block drive car, can make things convenient for the staff on sedan-chair top to dismantle the operator, can stop at any time moreover and prevent that the car from removing, very safety.

The invention is further configured to: the removed components are delivered from the nearest hall door.

By adopting the technical scheme, the components are delivered from the nearest hall door and then are subsequently carried, so that the disassembly work is convenient, and the later-stage arrangement is also convenient.

The invention is further configured to: when the lift car is dismantled, the lift car top steel wire rope is cut off, and the lift car top guardrail, the lift car top cross beam, the lift car top, the lift car wall and the lift car bottom are dismantled one by one according to the sequence.

Through adopting above-mentioned technical scheme, demolish the car in order, dismantle the back that finishes, the staff in the well is whole to leave the well.

In conclusion, the invention has the following beneficial effects:

1. when the elevator is dismantled, the hoisting rope is loosened to facilitate the operations of separating the car from the counterweight, breaking and dismantling the cable, dismantling the speed limiter and the steel wire rope thereof and the like in the following process, and a complex scaffold is not required to be built, so that the construction period is shortened, and the cost is lower;

2. through arranging twice safety measure protection and taking place, can prevent effectively that hoisting apparatus is malfunctioning to cause the emergence of the car condition of falling, guarantee constructor's personal safety.

Drawings

Fig. 1 is a flow chart of an elevator demolition method in an embodiment.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a method for dismantling a machine-roomless elevator, which comprises the following steps in combination with fig. 1:

the first step is as follows: preparation work before disassembly

The staff prepares to dismantle the required apparatus, checks and clears up the pit in the well, eliminates the fire control hidden danger, is equipped with the fire control facility (such as fire extinguisher, fire control sand, fire water etc.) and is nursed by the special person.

The second step is that: into an initial disassembled position

The traction machine is used for driving the lift car to ascend until the top of the lift car is located at any landing door, such as the top landing door, and a worker in charge of dismounting operation in the shaft can enter the shaft from the landing door and stand to the top of the lift car so as to perform subsequent operation.

The third step: cutting off power supply

The staff cuts off the power and the switch board power of hauler, finds out and organizes the circuit that needs remain such as communication line, fire control linkage line, communication cable conductor, discovers that unidentified circuit in time seeks the processing of proving to relevant personnel, ensures not to hide the electrified maloperation that the circuit leads to.

The fourth step: installation of traction facilities

1. Counter weight

The bottom of the counterweight guide rail is provided with a support which can adopt battens, and when the counterweight descends, the counterweight is supported, so that the condition that the lift car is separated from the counterweight is met.

2. Installation hoisting apparatus

(1) Hanging a steel wire rope rigging on a lifting hook close to the middle of the top of the hoistway, wherein the bearing capacity of the steel wire rope rigging is determined according to the actual construction condition;

(2) an electric hoist is hung on the steel wire rope rigging;

(3) and hanging a girder of the lift car on a lifting hook of the electric hoist.

The fifth step: arrangement of protective measures

1. Installing safety rope

(1) Digging a hole above the top landing door frame, finding a steel bar structure, and winding and fixing a safety rope on the hole;

(2) the other end of the safety rope is fixed on a car girder, so that the car is prevented from falling due to the failure of the electric hoist.

2. Secondary insurance

The left side and the right side of the car crossbeam are respectively provided with a pair of limiting ropes, the limiting ropes penetrate through a gap between the car guide rail and a hoistway wall, rope ends at two ends of the limiting ropes are fixed on the car crossbeam through rope sleeves, specifically, the rope ends of the limiting ropes bypass the car crossbeam, and the rope ends are fixed by U-shaped clamps after being pressed, so that the limiting ropes can be clamped on intersection points of a car track and a track support when the car falls, and the car is prevented from continuously falling.

And a sixth step: dismantling operation

1. Starting an electric hoist to drive the car to move upwards, moving the counterweight downwards to be implemented, loosening the hoisting rope at the moment, and then adjusting the top plane of the car to a proper position;

2. mechanically breaking and detaching a hauling rope to separate the lift car from the counterweight, breaking and detaching a cable, and detaching a speed limiter and a steel wire rope thereof;

3. the traction machine is disassembled, the electric hoist is started, the lift car descends, and the top plane of the lift car is stopped to a proper position, so that the traction machine can be conveniently and smoothly moved out of the hoistway after being disassembled;

4. starting an electric hoist, enabling the lift car to ascend, then sequentially detaching a track, a guide wire in a well and the like from top to bottom, and pulling the detached parts out of the nearest hall door;

5. when the lift car is positioned at the bottom of the well, cutting off the car top steel wire rope, and removing the car top guardrail, the car top cross beam, the car top, the car wall and the car bottom one by one in sequence;

6. removing the counterweight;

7. and after the disassembly is finished, all the workers in the well leave the well.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.

Claims

1. A machine-room-less elevator dismantling method is characterized in that: the method comprises the following steps:

arranging a support at the bottom of the counterweight guide rail;

installing a hoisting device;

s3: the dismantling operation, including the following processes,

dismantling the traction machine;

sequentially removing the parts in the shaft from top to bottom;

dismantling the lift car and the counterweight;

before the dismantling operation of S3, the method also comprises a step of arranging protective measures, which comprises the installation of a safety rope and is mainly taken from the following processes:

a safety rope is fixed at the steel structure of the top hall door;

fixedly connecting a safety rope with a car girder;

the step of arranging the protective measures also comprises secondary safety measures which are mainly taken from the following processes that a pair of limiting ropes are respectively arranged at the left side and the right side of a car girder, the limiting ropes pass through a gap between a car guide rail and a shaft wall, and two ends of the limiting ropes are fixed on the car girder;

the installation hoisting apparatus includes:

an electric hoist is hung on the steel wire rope rigging;

hanging a car girder on an electric hoist lifting hook;

the removed parts are delivered from the nearest hall door;

when the lift car is dismantled, the lift car top steel wire rope is cut off, and the lift car top guardrail, the lift car top cross beam, the lift car top, the lift car wall and the lift car bottom are dismantled one by one according to the sequence.