Use requirements:
The performance and effect of the anti falling safety device of the construction elevator directly affect whether the construction elevator can be used safely. In order to ensure the effectiveness of the anti falling safety device, regular inspection is essential. What are the specific requirements of the national standards for the inspection period and service life of the anti falling safety device of the construction elevator?
According to the construction industry standard of the people's Republic of China "construction elevator gear cone drum progressive anti falling safety device" (jgl21-2000), "construction elevator anti falling safety device can only be used within the valid inspection period. The valid inspection period of the safety device shall not exceed two years. Whether the safety device is used or not, it must be re calibrated after the expiration of the effective inspection. "
These safety measures are to ensure the safe use of construction elevators and prevent safety incidents. (gb10055-2007 safety regulations for construction elevators 11.1.9 stipulates that the anti falling safety device can only be used within the valid calibration period, and the valid calibration period shall not exceed one year. )
Detection protection:
In order to ensure the safety of the construction elevator, we must verify the anti falling safety device every 1-2 years. What verification equipment and items should be used in the verification of the anti falling safety device?
According to the understanding of Dacheng Construction Machinery Co., Ltd., at present, the test-bed for the inspection and calibration of the anti falling safety device generally needs the performance tester, stepless speed regulating device, torque and speed sensor, microcomputer type torque and speed meter, drawing printer and other verification equipment for the construction elevator.
The inspection items and steps of the safety device against falling of the construction elevator are as follows:
Before inspection and calibration, disassemble the centrifugal speed limiting device and cone drum brake of the anti falling safety device of the construction elevator, check the parts of the speed limiting device of the safety device, including: centrifugal block, centrifugal seat, spring plate, compression spring and adjusting bolt, check whether they are in good condition, operate normally, and remove oil and rust.
The second part of the verification of the anti falling safety device is aimed at the cone drum brake. We need to check whether the big copper nut, screw, cone drum, disc spring, indicator pin, etc. are in good condition and function normally. At the same time, we should also pay attention to the removal of oil and rust.
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