Length adjusting device

• Main Authors: ZHANG GENZHU, DONG CHANGWEN, ZHU XIAOSHUN
• Format: Patent
• Language: Chinese; English
• Published: 20.12.2022
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING

The utility model relates to the technical field of adjusting devices, in particular to a length adjusting device which comprises a main body, idler wheels are rotatably connected to the periphery of the bottom end of the main body respectively, a pull rod is connected to one end of the main body, a moving mechanism is arranged on the main body and comprises two fixing plates, and the two fixing plates are fixedly connected to the main body. Two first rotating shafts are rotatably connected between the two fixing plates, a drum roller is fixedly connected to the first rotating shafts, a second rotating shaft is rotatably connected to the main body, first chain wheels are fixedly connected to the second rotating shaft and the two first rotating shafts respectively, and a chain is engaged between the multiple first chain wheels; one end of the second rotating shaft is fixedly connected with a crank; the graphite electrode product can be flexibly moved, so that each part of the product can be sampled in a labor-