Lifting equipment is a dangerous equipment on the construction site. Once an accident occurs, it often causes serious consequences of group death. Therefore, the safety of lifting equipment has always been valued by relevant departments. The torque limiter is one of the most important safety protection devices for cranes. Practice has proved that the correct selection and maintenance of the crane torque limiter can reduce the safe operation of the lifting equipment until the lifting of the lifting equipment causes a major liability accident due to overloading.
The history of designing and producing torque limiters in China is not long. Before 1990, the torque limiters were mostly mechanical; due to the lack of rules, their reliability was generally poor. Since the National Technical Supervision Bureau issued the "Safety Technical Specification for Crane Torque Limiters" in 1990, there have been clear standards, specifications and methods for the design, identification and acceptance of this device.
In recent years, the torque limiter has developed rapidly, showing the following characteristics: the host is integrated and intelligent, and the display is multi-window and large screen; the latest product is added with the "black box" function. It can record the real-time operation of the crane; based on the remote monitoring function of the Internet of Things, it can remotely monitor the data of various working conditions of the crane in real time; the appearance is more exquisite; the installation adjustment is simple and the reliability of the product has been greatly improved. At present, there are many types of torque limiters on the market. The author believes that in selecting the torque limiter, in addition to the characteristics of the crane type of the unit, the basic principles to be followed are as follows: quality performance first, price second, domestically dominant.
The quality performance of the torque limiter directly affects the use, which is the basic principle of the selection of the torque limiter. The "domestic-based" is the convenient and convenient after-sales service for domestic manufacturers, which provides a convenient way for later use and modification.
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Pay attention to the following when maintaining the torque limiter: 1. The power supply, overload and super-wide connection lines are concentrated in the control box. Pay attention to the connector number when the control box cable is folded, so as to avoid the wrong line and damage the instrument output. Port; 2, when off work, turn off the power of the host to prevent the electronic components from accelerating aging at high temperatures for a long time; be sure to avoid the display instrument directly suffering from sun and rain; non-maintenance personnel should not adjust the buttons and take the instrument If the adjusting bolt of the force device is abnormal, the fault should be handled by the professional technician according to the method provided in the manual. If it is still impossible to eliminate, consult the manufacturer.
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2. Pass germany TUV testing, have EMC and LVD certificate.
3. The AC input power voltage is made between 85V to 240V. So it could select AC input voltage automatically. You could work in AC USA 110V or AC europe 220-240V.
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