Oilstone clamp convenient to clamp

The oilstone clamp convenient to clamp comprises a shell, a lantern ring is installed on the outer wall of the shell, a limiting mechanism is connected to one side of the shell, a threaded rod is arranged in the limiting mechanism and is in threaded connection with one side of the shell, a first reset spring is arranged on the outer wall of the threaded rod in a sleeved mode, and a second reset spring is arranged on the outer wall of the first reset spring. Clamping plates are fixedly mounted on the inner sides of the threaded rods, first sliding blocks are fixedly connected to the top ends of the clamping plates, and first sliding grooves are slidably formed in the top ends of the first sliding blocks. Through the arrangement of the limiting mechanism, the threaded rod rotates, under the fixing action of the threaded rod and the clamping plate, the threaded rod drives the clamping plate to fix oilstone blocks, it is ensured that the oilstone blocks of different sizes can be fixed, the structure is simple, op