A temporary storage and separation device for wheels on a track line, characterized in that it comprises a main body bracket, a rotating mechanism, a turntable, a first connection rod, a second connection rod, a third connection rod, a fourth connection rod, a first blocking lever, a second blocking lever, a third blocking lever and a fourth blocking lever, wherein the rotating mechanism is mounted on the main body bracket; an upper surface of the turntable is a horizontal plane; the turntable is connected with the rotating mechanism; the upper surface of the turntable is movably connected with the first connection rod, the second connection rod, the third connection rod and the fourth connection rod; the first connection rod is movably connected with the first blocking lever; the second connection rod is movably connected with the second blocking lever; the third connection rod is movably connected with the third blocking lever; the fourth connection rod is movably connected with the fourth blocking lever; positions, movably connected with the upper surface of the turntable, of the first connection rod and the fourth connection rod are located on a straight line passing through a center of a disc, and positions, movably connected with the upper surface of the turntable, of the second connection rod and the third connection rod are located on another straight line passing through the center of the disc; characterized in that: the turntable is capable of clockwise and counterclockwise rotating with the rotating mechanism; and in that the rotating mechanism is capable to be provided with two target positions; the rotating mechanism rotates clockwise from a first target position to a second target position, and then rotates counterclockwise from the second target position to the first target position, and the rotating mechanism does a reciprocating motion between the two target positions; when the upper surface of the turntable rotates clockwise with the rotating mechanism to the first target position, the first blocking lever and the fourth blocking lever are contracted to cause the wheel to move forwards, and the second blocking lever and the third blocking lever are extended to block the wheel; and when the upper surface of the turntable rotates counterclockwise with the rotating mechanism to the second target position, the second blocking lever and the third blocking lever are contracted to cause the wheel to move forwards, and the first blocking lever and the fourth blocking lever are extended to block the wheel. the upper surface of the turntable is movably connected with the first connection rod, the second connection rod, the third connection rod and the fourth connection rod; the first connection rod is movably connected with the first blocking lever; the second connection rod is movably connected with the second blocking lever; the third connection rod is movably connected with the third blocking lever; the fourth connection rod is movably connected with the fourth blocking lever; positions, movably connected with the upper surface of the turntable, of the first connection rod and the fourth connection rod are located on a straight line passing through a center of a disc, and positions, movably connected with the upper surface of the turntable, of the second connection rod and the third connection rod are located on another straight line passing through the center of the disc; characterized in that: the turntable is capable of clockwise and counterclockwise rotating with the rotating mechanism; and in that the rotating mechanism is capable to be provided with two target positions; the rotating mechanism rotates clockwise from a first target position to a second target position, and then rotates counterclockwise from the second target position to the first target position, and the rotating mechanism does a reciprocating motion between the two target positions; when the upper surface of the turntable rotates clockwise with the rotating mechanism to the first target position, the first blocking lever and the fourth blocking lever are contracted to cause the wheel to move forwards, and the second blocking lever and the third blocking lever are extended to block the wheel; and when the upper surface of the turntable rotates counterclockwise with the rotating mechanism to the second target position, the second blocking lever and the third blocking lever are contracted to cause the wheel to move forwards, and the first blocking lever and the fourth blocking lever are extended to block the wheel.