Numerical control fixed-torque intelligent electric wrench

Abstract

The invention discloses a numerical control fixed-torque intelligent electric wrench. The wrench comprises a parameter input and display module, a two-dimensional code scanning module, a torque sensor, an angle sensor, a numerical control module and a data transmission module. The parameter input and display module is used for presetting torque parameters, displaying the torque result and achieving operation information reminding. The two-dimensional code scanning module is used for recognizing current operation personnel and construction plan contents. The numerical control module is used forreceiving and processing the input result of the two-dimensional code scanning module, receives the parameters and the output result of the parameter input and display module at the same time, is used for processing the torque information and the angle information of the torque sensor and the angle sensor and controlling the tightening work process, is used for integrating all the information collected in the construction process and achieving correlation of information of the human task, the machine task and the construction task and transmits the information to a background server through the data transmission module. According to the electric wrench, the construction procedures can be simplified, and the construction quality is obviously improved.

Description

technical field [0001] The invention relates to the field of electric wrenches, in particular to a digitally controlled constant torque intelligent electric wrench. Background technique [0002] In the construction of high-strength bolts in steel structures, the most important thing is how to ensure that all high-strength bolt connections can reach the design pretightening force specified in the design specifications. Excessive pretightening force will cause necking and stretching of high-strength bolts. Long, it may also cause delayed fracture within a period of time after construction due to excessive pre-tightening force, causing safety hazards. Too low pre-tightening force will reduce the connection strength of the structure and bring hidden dangers to the linearity and stability of the structure. [0003] At present, most of the high-strength bolt construction in my country adopts the torque method, that is, the required high-strength bolt pretightening force is achiev...

AI Technical Summary

Problems solved by technology

Therefore, the torque coefficient value of the high-strength bolt connection pair in this batch number is discrete. When the construction torque is determined, when encountering a connection pair with a large or small torque coefficient, the pre-tightening force of the tightening will be too small or too large. Cause undertightening or overtightening of the corresponding bolt construction

[0006] It can be seen from the above situation that the current high-strength bolt connection construction process is very cumbersome, the quality management information level is low, and the construction quality is difficult to guarantee.

The main reason for the above problems is that the performance of the fixed torque electric wrench is not ideal.

Images