Pushing and splicing synchronization device, control method of pushing and splicing synchronization device and shield tunneling machine

The invention provides a pushing and splicing synchronizing device, a control method of the pushing and splicing synchronizing device and a shield tunneling machine, relates to the technical field of tunnel construction, and aims to solve the problems that in the related technology, the grabbing precision of to-be-spliced segments is low, and the splicing effect of the to-be-spliced segments is poor. The pushing and splicing synchronizing device comprises a pushing oil cylinder assembly, a splicing assembly and a controller, the splicing assembly comprises a splicing machine and a translation hydraulic assembly arranged on the splicing machine, and the controller obtains the stroke change value of the pushing oil cylinder assembly and calculates the tunneling speed of the pushing and splicing synchronizing device moving in the tunneling direction according to the stroke change value of the pushing oil cylinder assembly; and the translation hydraulic assembly obtains a current value corresponding to the tunnel