The automobile lift is an auto maintenance equipment used in the automobile aftermarket for automobile lifting. The lift plays a vital role in the maintenance of the vehicle, whether the vehicle overhaul, or minor repair and maintenance, can not be separated from it, its product nature, quality directly affect the personal safety of maintenance personnel. In the maintenance and maintenance enterprises of different sizes, whether it is a comprehensive repair shop that repairs a variety of models, or a street shop that operates a single scope (such as a tire shop), almost all are equipped with a lift. According to the function and shape of the lift machine is divided into: single column, double column, four column, shear type. Today we are going to talk about the small shear elevator alone.
There are some sites that are not suitable for installing column lifts, and shear lifts will be chosen to solve the customer's site problems. However, shear lifting has strict installation specifications and use specifications.
Because our family cars are generally front-engine, so there is a heavy front, light rear design, you can see the following picture; The lifting force points of the small shear elevator are divided into fixed points (red in the figure) and moving points (green in the figure). When the small shear lift rises, the force point of the moving point will move to the middle, causing the center of gravity of the force (dotted line above) to narrow, if the normal direction of entry (below), due to the heavy front, the force point is a fixed point, so even if the moving point is retracted, because the weight of the tail is relatively light, so the force change of the moving point will have less impact, so as to ensure the safety of the lift.
You think about it, when your car is entering the car in the opposite direction (below), the front is at the moving point, with the work of the lifting machine, the force of the vehicle will be offset in the direction of the moving point, if the wheelbase of the car is longer, the center of gravity will be more severe, so that the lifting vehicle, there will be a major safety hazard!