英语
Once the hydraulic lifting freight elevator is unbalanced during operation, it will affect the entire lifting process, so in order to control and make up for the position error of the hydraulic lifting platform, it must be kept in balance. But what method will be used to keep the hydraulic lift table in a balanced state?
A travel limit switch can be set at the lower limit position of the two oil cylinders of the hydraulic lift freight elevator, so that the two pistons can automatically adjust the position error once after completing a stroke, and ensure that each restart starts from zero. The positional accuracy condition is thus satisfied.
Or use the principle of load pressure feedback to compensate for the change in flow caused by the load change, so that the flow of the hydraulic system of the hydraulic lift freight elevator reaches a new balance. However, this method cannot automatically compensate the position error accumulated in the dynamic process of load change, and can only play a role in controlling the flow distribution.
The hydraulic lift freight elevator can be selected as two-phase, three-phase, battery and diesel engine as the lifting power according to the needs. In special places, explosion-proof motors and electrical appliances can also be used. The elevator control method is electric up and down control, hand, electric or remote control, and it can still be used in the event of a power failure. This series of lifts has the characteristics of flexible movement, stable lifting, large carrying capacity and convenient operation. industry. The hydraulic lifting platform can be designed and manufactured according to user requirements.
In this way, the hydraulic lift freight elevator can keep balanced and synchronously ascend and descend under the condition of unbalanced load, realize the unique function, make the movement smooth and noiseless, and realize automatic network operation under the control of the microcomputer system. Design requirements.
