Test fixture for connecting ring-dividing valve and test bench and use method of test fixture

The invention discloses a test fixture for connecting a ring-dividing valve and a test bed and a use method of the test fixture. The test clamp comprises a clamp main body which comprises an oil cavity; one of the hydraulic pipes is connected to the end of the clamp body and communicated with the oil cavity, the other hydraulic pipes are symmetrically arranged on the two sides of the clamp body and communicated with the oil cavity, one of the other hydraulic pipes serves as a standby hydraulic pipe, one end of each hydraulic pipe is communicated with the oil cavity, and the other end of each hydraulic pipe is not communicated with the outside; one end of the connecting pipe is connected to the opposite end part of the clamp main body and is communicated with the oil cavity, and the other end is connected to a test bed; one end of each middle connecting piece is communicated with the corresponding hydraulic pipe through a hose, and the other end of each middle connecting piece is communicated with the joint of