Multi-functional bench vice with quick-change jaw

A multi-functional bench vice with a quick-change jaw, comprising a movable vice body, a fixed vice body, a screw rod, and a handle;

• wherein the movable vice body is slidably installed on the fixed vice body;
• a first end of the screw rod is connected to the handle, and a second end of the screw rod passes through the movable vice body and is connected to the fixed vice body through threads;
• a fixed jaw is arranged on the fixed vice body;
• a quick-change assembly and a movable jaw assembly are installed on the movable vice body;
• the quick-change assembly comprises an adjustment rod and a pull rod;
• the adjustment rod is provided with an external thread and an internal thread;
• the adjustment rod is installed on the movable vice body through the external thread, and the adjustment rod is connected to a first end of the pull rod through the internal thread;
• a helical direction of the external thread is opposite to a helical direction of the internal thread;
• a second end of the pull rod passes through the movable vice body and is clamped on the movable jaw assembly;
• and the movable jaw assembly corresponds to the fixed jaw.