During the initial operation of the
electrical linear actuator, the metal contacts directly with the micro-bumps on the relative moving surface, and the oil film is not easy to form, resulting in dry friction. In this situation, direct high-speed operation with load will inevitably cause serious wear and tear, scratch, and "bite cylinder" phenomenon. Therefore, the initial operation of natural gas engine must be run-in.
The so-called running-in process is to make the
air cylinder actuator run for a certain period of time under no-load, low speed and partial load conditions, and make the cylinder liner and piston ring cooperate with each other, so as to eliminate the surface micro-roughness, and gradually form an oil wedge which is conducive to the establishment of oil film and improve the lubrication conditions. A good running-in air cylinder actuator can greatly reduce the wear and tear of the cylinder liner in normal operation and improve its service life. It should be pointed out that when the air cylinder actuator has run-in process before leaving the factory, it is not necessary to carry out this process for a long time in use.
Because the thrust of the electrical linear actuator depends largely on the inductive current on the inductive plate, pure aluminum with high conductivity is generally used as the plate
The thrust exerted by the electrical linear actuator on the bag car is the largest when the car is stationary and decreases proportionally in reverse with the motion of the car.
Because of the attraction between the primary and the plate, two isolation wheels are installed at the front and back of each primary to ensure that the distance between the primary and the plate remains unchanged.
The equipment is controlled by programmable logic controller. The input signal is processed by a computer, and then the actuator, conversion device and brake device are controlled by output module and contactor, and the status signal is given on the display screen. The whole set of equipment can be divided into five independent control systems, each of which is equipped with an information processor.
Programmable control system also has the function of finding errors and quickly determining faults.
All the components of the programmable control system and the power devices are installed in a central control room.
A switch is installed on the transmission line of the bag suspension. An optical reader is installed in front of the switch, which can identify the information of the box mouth of the bag suspended on the car arriving here, and give instructions to the control system to locate the switch device controlled by the electromagnet, so that the bag suspension car can enter the opening position. If a section is not accessible, the section will automatically change from normal program to fault program.
