Accident Analysis and Prevention no scaffolding installation process may exist

On the basis of analysis of accident conditions, such an electric operating platform may also exist following accidents, in order to further improve the elevator installation process without scaffolding for possible incidents were analyzed, and appropriate safety precautions.

(1) may occur throughout the car frame fall accident, you may fall causing casualties on the platform operator.

The analysis, due to the heavy frame hanging high in the sky, on the corners of their rope sheave wrap angle than the elevator run even larger, sufficient traction force. Therefore, the key lies in the occurrence of such incidents elevator hoisting rope rope fastening devices must be installed according to specifications qualified.

In the following safety precautions should be taken:

① In addition to the coupling bolts platform guardrails must all use the elevator parts, and requires a one-time installation in place (including the length of the rope should be considered, including the good, cut good);

② active job preparation platform components required by the formal installation process, a one-time installation qualification (including heavy frame traction rope rope combination device);

③ must install the governor - safety gear protection system, just in case. Once that occurs when the car frame fall, the governor can action, and can bring safety gear, the active clamp on the platform already packed rail workers on the platform to ensure foolproof.

④ When the car frame and counterweight frame at the same height above the mounting reliability should conduct a self-test, self-examination, to ensure safety.

⑤ important provisions: the principle should lift all are required to install the wire rope and wire rope installed traction force balancing device. Since late installation, or early installation are to be installed. Allowed to install only a rope to start construction work on the platform!

(2) may occur squeeze, falling accidents.

After analysis, the active work platform to the hoistway wall distance of about 300mm ~ 800mm range, therefore, in the process of elevating work platforms, if the head, hands stretched out outside the fence, it is possible to squeeze, caught in the rail bracket, or protruding part of the hoistway wall, causing injury or death.

In addition, installation and construction tools may slide platform, fall down and hit the bottom of the workers, causing casualties.

In the following safety precautions should be taken:

① reliable platform should be installed protective railings, usually with car car top guardrail. However, some of the elevator car top guardrail partial short (h = 800mm ~ 1000mm). Should the bolt holes on when not to, you are responsible for heightening of 1.1m, with skirting board fence, to ensure that workers do not fall out, and construction tools will not leave to go on the platform;

Elevating work platforms ② manipulation activities should be set on the platform, that the use of the original car roof maintenance operation switch, jog operation control, avoid lifting signal transmission errors, and lead to squeeze, falling accidents, ensure the safety of construction;

③ strict discipline construction work on the platform. Limit of no more than three people, with a total weight of work equipment does not exceed 200kg! Platform construction and installation of facilities, not the elevator, not the passengers, not cargo handling.

④ When the car frame and the frame of the heavy going at the same height, construction personnel work platform should pay particular attention to safety, to prevent causing extrusion, fall accidents, ensure the safety of construction;

⑤ important provisions: workers are not allowed on the platform at inching up, while lowering the head, hands stretched out beyond the fence.