Classification and characteristics of car lifts(2)

C. four-post lift

Four-post car lifter is a large tonnage car or truck repair and maintenance units commonly used special machinery lifting equipment, four-post car lifter is also very suitable for four-wheel positioning with, because the general four-post car lifter have a four-wheel positioning gear, can be adjusted to ensure the level.

Four-post lift according to its structure is divided into the upper cylinder type and lower cylinder type two. The upper cylinder type four-post lift has its cylinder placed on the top of the column (with crossbeam), and the lower cylinder type has its cylinder placed under the flat plate. The upper cylinder type four-post lifter mainly relies on four chains to pull up the four corners, the tension cylinder is placed on the top, this structure is simple, but the self-weight increases.

Most on the cylinder type four-post lift secondary lift for manual or pneumatic, repairman need to run to the bottom of the operation, which is not convenient and unsafe for users who often use the secondary lift. Safety device for pneumatic devices, if there is no air source is more trouble. The lower cylinder four column lift mainly relies on four thick steel cable pulling up the four corners, pulling force cylinder placed under the flat plate, through the six discs to convey the force on all sides. This structure is more compact, self-weight reduction.

Secondary lifting is generally electro-hydraulic, and the main pump is connected together, as long as the rotation of the conversion valve can be, lifting speed, the insurance device for the wedge type, four wedge using the tie bar linkage, pull the lever can open the insurance device, convenient and durable.

D. scissor lift

The executive part of the scissor lift adopts the form of scissor stack rod, electric drive mechanical transmission structure, which is widely used in the maintenance of large vehicles. Shear lift lifting speed moderate and does not occupy the car pit position, for some models are relatively fixed, work intensity (such as in the bus) repair field is undoubtedly the best choice. And because of the simple structure and good synchronization, generally used as a platform for four-wheel alignment instrument.

Scissor lift is divided into large scissors (child and mother type), small scissors (single scissors) lift, ultra-thin series of scissor lift and several types. Small shear lifter is mainly used for car repair and maintenance, high safety, easy to operate. After digging the groove and the ground level. Big shear lifter gushing out more, is with four wheel alignment instrument de best equipment, and can be done for car maintenance, tires, chassis overhaul with.

Can dig the groove, but also can be installed directly on the ground. Ultra-thin series of scissor lift without trenching, suitable for any repair shop, there are some floors are not suitable for the installation of two-column lift as well as ordinary four-column lift, and the machine and the floor contact surface, so that it can be installed on top of any floor that can drive, to solve the customer site problems. This type of machine is the future mainstream products, foreign large-scale use of this product.

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