Synchronous detector used for travel switch

The utility model discloses a synchronous detector used for a travel switch. The synchronous detector used for the travel switch includes a working table, a travel switch mounting support and a travel switch hitting block. A travel guide rod is arranged in the working table. A travel displacement movable block is arranged on the travel guide rod. The travel displacement movable block is connected to the travel switch hitting block through a support rod. The working table is also provided with a control rod arranged in parallel with the travel guide rod. A pressure detecting cavity is also arranged in the working table. A pressure guide rod and a pressure sensor are arranged in the pressure detecting cavity. The pressure guide rod is arranged in parallel with the travel guide rod. A pressure spring is arranged on the pressure guide rod. One end of the pressure spring is connected with the sensor while the other end of the pressure spring pushes against the travel displacement movable block. Travel scales are a