Automatic synchronous loading system for space structure lattice

An automatic synchronous loading system for a space structure lattice, comprising:

• a liquid storage tank, wherein the liquid storage tank is filled with a loading liquid, and the liquid storage tank is connected to a main liquid inlet pipe and a main liquid outlet pipe;
• branch liquid tanks, wherein a quantity of the branch liquid tanks is plural, and each of the branch liquid tanks corresponds to at least one loading node;
• each of the branch liquid tanks is connected to the liquid storage tank, each of the branch liquid tanks is connected with a liquid inlet pipe and a liquid outlet pipe, each of the liquid inlet pipes is communicated to the main liquid inlet pipe, and each of the liquid outlet pipes is communicated to the main liquid outlet pipe;
• regulator valves, wherein each of the liquid inlet pipes and each of the liquid outlet pipes are each connected with a respective regulator valve;
• a plurality of force sensors, wherein each of the plurality of force sensors is correspondingly connected between a respective one of the branch liquid tanks and a corresponding one of the loading nodes;
• a quantity of the loading nodes is plural;
• a main controller, a data acquisition box, a control box, and a transmission bus;
• wherein the data acquisition box and the control box are both connected to the main controller through the transmission bus;
• the data acquisition box is connected to the plurality of force sensors through a multi-core signal wire, and the control box is connected to the regulator valves through the multi-core signal wire;
• the main controller is configured, according to data of the plurality of force sensors fed back by the data acquisition box, to compare the signals with preset signals for analysis and, when the signals received by the main controller are the same as the preset signals, to control the corresponding regulator valves on the liquid inlet pipes to be closed, and, when loads of the loaded branch liquid tanks need to be adjusted, to control the regulator valves on the corresponding liquid outlet pipes to be opened and, when the signals are the same as an input load signal, to control the corresponding regulator valves on the liquid outlet pipes to be closed, through the control box;
• the transmission bus is provided with a plurality of branch lines, and each branch line corresponds to the regulator valve and the force sensor on one branch liquid tank;
• the automatic synchronous loading system for the space structure lattice adopts three stages of wiring schemes, namely a first stage, a second stage, and a third stage;
• the first stage is between a computer and the main controller and is configured to run control software;
• the second stage is an electrical cabinet located at a loading site and configured for signal convergence and power supplying;
• the third stage is control elements arranged on circumferential sides of the branch liquid tanks, and the control elements at least comprise the regulator valves and the plurality of force sensors;
• the first stage and the second stage are connected in series through an Ether Control Automation Technology (EtherCAT) bus, and the second stage and the third stage are connected through the multi-core signal wire;
• by using the multi-core signal wire, the electrical cabinet is configured to lead out signals of the plurality of force sensors for convergence by a deconcentrator and to the data acquisition box, and valve control signals of the regulator valves for convergence by a deconcentrator and to the control box;
• the regulator valves and the plurality of force sensors are branched by a deconcentrator;
• each of the plurality of force sensors is connected to the deconcentrator through a single-channel transmitter and is connected to a bus module in the electrical cabinet after the convergence;
• each of the regulator valves is connected to the deconcentrator and is connected to the bus module in the electrical cabinet after the convergence;
• the regulator valves on the liquid inlet pipes are electromagnetic liquid inlet valves, and the regulator valves on the liquid outlet pipes are electromagnetic liquid outlet valves;
• a guy cable connected to the plurality of force sensors;
• wherein the guy cable is configured to be connected to the loading nodes;
• and
• a pulley, wherein the guy cable connected to the loading nodes is connected to the corresponding force sensor through the pulley, and the pulley is configured to change an extending direction of the guy cable;
• when the loading nodes on a certain space structure are not in a normal horizontal state, a direction of a force is changed, without changing a magnitude of the force by a cooperation between the pulley and the guy cable.