Locking adjusting device

The utility model provides a locking adjusting device which comprises a sliding connecting base, a supporting base and a locking assembly arranged between the sliding connecting base and the supporting base, the locking assembly comprises a limiting block, a rotating rod and an adjusting wrench, the limiting block is arranged on the rotating rod in a sleeved mode, one end of the rotating rod is fixedly connected with the adjusting wrench, and the locking assembly has a locking state and an unlocking state. In the locking state, the limiting block abuts against the sliding connecting base in the longitudinal direction so that the sliding connecting base can not slide up and down. When the locking assembly is switched from the locking state to the unlocking state, the adjusting wrench is wrenched to enable the rotating rod to rotate and drive the limiting block to deflect to deviate from the sliding track of the sliding connecting base, at the moment, sliding of the sliding connecting base is not hindered any m