Patent ID: 11906401
Assignee: CHENGDU UNIVERSITY OF TECHNOLOGY
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 5:
6. The sampling device according to claim 1, wherein the protective cover (2) is provided with a sliding hole, the first rotation shaft (802) is inserted in the sliding hole of the protective cover (2), an anti-loosening plate (202) is with the protective cover (2), the support frame (1) is provided with two vertical positioning slots (104) at the bottom of the upper portion of the support frame (1), the protective cover (2) is clamped in the vertical positioning slots (104) of the support frame (1), and a first support spring is sleeved on the outside of the first rotation shaft (802), wherein the anti-loosening plate (202) prevents fixing bolts (702) of the positioning seat (7) from loosening.