The lifting platform plays a key role in the construction of construction engineering, and can transport raw materials and construction teams on the road and between buildings, which stipulates that each component of the lifting platform manipulator is the main control chip, and the microcomputer system has high credibility and reliability. The DC contacts and AC motors themselves are strong interference signals, while the construction machinery and equipment have high requirements, The leveling control board of the lifting platform works outdoors, which has a difficult environment and many interference signals. The elevator system is designed by a single chip microcomputer to operate the DC contactor according to the intermediate relay, so as to operate the three-phase AC motor. Therefore, how to deal with the influence problem of the system is very key.
1. Various hazard factors must be considered in specific application, including natural environment, ground, swing of fork rod and compressive strength of support leg. Although the critical load in many areas has already exceeded the rated load, it must still be considered within the rated load range and overweight is prohibited in application, so as to ensure the workability.
2. Whether in the side or in the forward direction, the lifting platform of workers who do not open the support leg is not stable, so it is prohibited to use it. Opening the support leg can further improve the reliability of work collapse. In specific work, if the standard allows, the support leg should be opened as far as possible. If the support leg is not applied in a unique situation, the working angle of view can not exceed 5 degrees.
3. Open the support leg. When the larger working height is 8m under the rated load of 300kg, the side working angle can exceed 15 degrees, and the larger viewing angle in the forward direction can also exceed 15 degrees. If the support leg is not opened, when the larger working height is 8 m under the rated load of 300kg, the larger working angle in the forward direction can only exceed 5 degrees, otherwise, it is strictly prohibited to use.
4. The operation of lifting platform and general construction machinery and equipment have mutual areas, but also their diversity. The research and development of leveling control board involves mechanical equipment, hardware and software design scheme.
Daily maintenance of elevator.
The elevator has been inspected and debugged before leaving the factory, and all technical indexes meet the design requirements. When using, it only needs to connect the power supply, and the hydraulic and electrical systems basically do not need to be adjusted. During use, the elevator should be placed on a solid and flat boarding bridge ground to prevent tipping during operation. Press the "rise" or "fall" button to lift the workbench. If the workbench does not move, it should be stopped immediately for inspection, If the working pressure of the electric elevator is too high or the sound is abnormal, it shall be shut down immediately to avoid serious damage to the machinery. The working state of the shaft pin shall be checked regularly every month. If the shaft pin and screw are loose, they must be locked to prevent accidents caused by the falling off of the shaft pin. The hydraulic oil shall be kept clean and replaced every 6 months. When repairing, maintaining and cleaning the elevator, it is necessary to support the strut.
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