Lifting machinery is divided into: lift tables, lift platforms, hydraulic lifts, freight lifts, fixed lifts, aluminum alloy lifts, cylinder-type lifting platforms, articulated arm aerial work platforms, rail-type lifts, etc. When we work at heights, the shaking of the lift platform must be terrifying. Due to the influence of structural characteristics and load conditions, there is a certain movement of the lifting platform, which leads to the deflection of the platform.
The hydraulic aluminum alloy telescopic lifting platform will have deflection problems during the lifting process. The higher the lifting height, the larger the deflection range. Therefore, it is very important to measure the lifting deflection of the lifting platform. So how to measure the lifting problem of the swing of the mobile lifting platform?
When measuring the swing of the aluminum alloy lifting platform, it is necessary to use heavy hammers, steel gauges, protective ropes, etc.
First, we need to place the device on a flat surface, then unfold the outriggers. Record the entire process of the device from the lowest position to the highest position. During the lifting process, the equipment must be below the level 2 wind. When measuring, a length of rope must be fixed at the midpoint of the lifting platform, and the other end will be fixed at 0.15 times the rated load by going around the fixed pulley; the other end of the rope must be fixed at the midpoint of the longitudinal side of the table , and at the other end is a heavy hammer. Under the above-mentioned maximum lateral force, the hydraulic lift rises to the highest position, and the vertical distance of the front and rear weights protruding on the ground is recorded, that is, the maximum deflection.
When the rated load of the lifting platform is at the maximum height, the deflection of the platform under the maximum lateral force should not be greater than 0.02 times the maximum height of the platform. And the maximum lateral force shall not be less than 250 N to measure the deflection of hoist equipment, and a method to measure the natural deflection requires the use of tool pens, boards, steel plates, etc. Other equipment should be placed on a high level during measurement. storey building or parallel to the lift. Stand on one side of the building or equipment, on the lateral side of the corresponding test platform, as a flexible color pen, so that the pen can always be in contact with the vertical board during the whole lifting process, one perpendicular to the chassis A straight line on the surface, extending upwards from the top of the marker to the maximum lift height, to measure the maximum distance that deviates from the straight line on the vertical board during lift, i.e. natural deflection.
When measuring the deflection of a lifting device, we need to measure it multiple times. One is the measurement data of the unloaded equipment, and the other is the data when the maximum load is carried, and then the data is observed. The deflection of the lift during the lifting and landing process cannot exceed 0.5% of the maximum lifting height, which can be regarded as a quality standard. Through the above method, the stability of the hydraulic lift can be determined, so as to ensure that the equipment can operate better when in use.
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