Appraisal Background
Construction elevators are also called construction elevators for buildings. They can also be used as outdoor elevators and construction site lifting cages. Construction lifts are manned and cargo-carrying construction machines that are often used in construction. They are mainly used for the interior and exterior decoration of high-rise buildings, the construction of bridges, chimneys and other buildings. Construction lifts are dangerous equipment that can easily lead to serious casualties.
The metal structure and electrical metal shell are not grounded or the grounding does not meet safety requirements, the safety factor of the steel wire rope hanging the counterweight does not reach 8 times, and the electrical device is not equipped with phase sequence and power-off protector. These are common accidents during the use of construction lifts.
Zhongke Testing provides mechanical equipment quality appraisal services. It can conduct appraisal work on whether there are quality problems related to lifts, issue professional and reliable inspection reports, and assist courts and enterprises in resolving product quality disputes.
Basis for appraisal
JB/T 13031-2017 Construction lift Traction construction lift
JB/T 10546-2014 Automobile special lift
CB/T 3013-2016 Marine lift
JB/T 11463-2013 Printing machinery Lift
GB 28755-2012 Simple Lift Safety Regulations
GB 10055-2007 Construction Lift Safety Regulations
GB/T 10054.1-2021 Cargo Construction Lifts Part 1: Lifts with transportable devices
GB/T 10054.2-2014 Cargo construction lifts Part 2: Inclined lifts with inaccessible carriers
GB/T 24806-2009 Stairway lifts for people with reduced mobility
GB/T 26557-2021 Construction lifts with vertical guides for both people and cargoes
JGJ 215-2010 Safety Technical Regulations for Installation, Use and Disassembly of Construction Lifts (Explanation of Articles)
0GB 5083-1999 General Principles for Safety and Hygiene Design of Production Equipment
Authentication case
Entrusted by a certain court, our company accepted the case to analyze the causes of the lift accident involved. The expert team conducted an on-site inspection to investigate the post-accident status of the elevator involved, and simulated and calculated the cause of the accident. The quality appraisal opinion obtained was:
1, the "elevator" involved did not comply with GB 5083-1999 "General Principles for the Safety and Hygiene Design of Production Equipment" and GB 28755-2012
2. The "elevator" involved in the case was not equipped with landing protection devices, landing door mechanical interlocking devices, landing door electrical interlocking devices that were not perfect in accordance with the requirements of national standards. The landing buttons and signs did not meet the specified requirements, and there was no protection device to prevent operation obstruction, and there was no installation. The "anti-fall device" listed in the technical parameters of the installation contract was the quality cause of the fall accident;
3, the main structure and main components of the "elevator" involved in the case did not see significant changes, and the electrical control part showed no signs of replacement. However, the external isolation iron mesh and working platform fence of the lifting equipment were replaced.
