Mechanical equipment quality appraisal

Because large mechanical equipment usually has the characteristics of complex structure, strong repairability, and the need for repeated debugging. Generally speaking, quality appraisal is an essential link in product quality cases. Zhongke Testing provides quality appraisal services for various types of machinery and equipment.

Zhongke Testing Product Quality Appraisal Center can provide product design analysis, load analysis and product quality analysis for various mechanical equipment such as chemical machinery, instrumentation, agricultural machinery, medical equipment, environmental protection machinery, engineering machinery, plastic machinery, electromechanical equipment, hardware machine tools, electric machinery, food machinery, mining machinery, etc.

was entrusted by a court to analyze the causes of the elevator 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 were not perfect in accordance with the requirements of national standards, landing buttons and signs did not meet the specified requirements, and no protection devices were installed to prevent operation obstruction, and there were no safety devices installed. 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.