Lifting platform accident appraisal

Lifting platform is a commonly used equipment in modern construction sites. Its function is to transport personnel and building materials during the construction of high-rise buildings, improving work efficiency. However, due to complex construction environments, improper operators and other reasons, there are also some common types of accidents during lift construction.
Due to improper operation, inadequate maintenance or equipment structural problems, the lifting platform may fall during operation. Once such an accident occurs, it is extremely harmful and often leads to serious injury or even death.
Zhongke Testing and Appraisal Institute can provide lifting platform accident identification services and make accurate identifications on trace evidence analysis and accident cause analysis in various lifting platform accidents.

There are many reasons for elevator falling accidents, which can be summarized as follows:
(1) The brake torque of the driving device is insufficient and the safety factor is too small;
(2) Problems with single drive and dual (multiple) drives;
(3) The reliability of the anti-fall safety device is poor;
(4) violates the buckling regulations, does not follow the provisions of the product manual, and operates overloaded;
(5) There is no supporting wheel on the back of the meshing point between the driving pinion and the rack, or the eccentric shaft of the supporting wheel has no locking plate;
(6) There is no counterweight;
(7) Other accidental reasons;

An electrician from a certain company was performing maintenance work on the hydraulic workbench involved in the workshop. The hydraulic workbench involved suddenly rolled over during the descent process, causing injuries to the person involved. He called 120 and died after on-site rescue failed. Our company was entrusted by the court to conduct a technical appraisal of the "lifting injury accident" and find the direct cause of the accident.
appraisal analysis results:
Our appraisers went to the workshop involved to conduct an on-site inspection. The analysis of the causes of the "electric shock casualty accident" involved is as follows: HTMLTAGTOKE The N3 hydraulic workbench involved rolled over and lay on an iron shelf used for workshop production equipment. Looking at the nameplate of the hydraulic workbench involved, it was found that the hydraulic workbench involved was an SJY type hydraulic workbench (manned aerial work platforms and freight elevator products, collectively referred to as SJY type).
checked the surveillance video of the incident and found that when the worker involved was operating the hydraulic workbench, he did not open the outriggers to their widest position or tighten the outriggers. The outriggers were in the air. Instead, the four tires played the role of supporting the hydraulic workbench involved. The worker involved did not wear a safety helmet or fasten a safety belt after climbing onto the working platform of the hydraulic workbench involved.