Adjustable overline protection frame

The invention relates to the technical field of operation and maintenance of high-voltage and low-voltage equipment, and discloses an adjustable overline protection frame which is characterized in that an adjusting mechanism is arranged on a main bidirectional transmission screw and comprises a first threaded linkage block and a second threaded linkage block; the output ends of the first threaded linkage block and the second threaded linkage block are each provided with a branch adjusting assembly. The branch adjusting assembly comprises a first linkage lantern ring block and a second linkage lantern ring block which are in threaded connection to an auxiliary bidirectional transmission screw, and the auxiliary bidirectional transmission screw can drive the first linkage lantern ring block and the second linkage lantern ring block to move in the opposite direction or the opposite direction under the action of external force. The first linkage lantern ring block is fixedly connected with a radian positioning su