Pipe Cutter

3, The pipe cutter according to claim 2, characterized in that:

• the transmission device comprises a cabinet and a transmission shaft;
• the one-way bearing comprises an outer ring and an inner ring;
• the inner ring is sleeved on the transmission shaft;
• and the outer ring is firmly cooperated with the cabinet.

5, The pipe cutter according to claim 1, characterized in that:

• an installing shaft is arranged on the rack;
• the transmission device is rotatably sleeved on the installing shaft;
• the power unit is fixedly connected to the transmission device;
• and the pushing device can simultaneously push the transmission device and the power unit.

6, The pipe cutter according to claim 2, characterized in that:

• the power unit comprises a motor and a decelerator;
• one end of the decelerator is connected with the motor;
• the other end is provided with an output shaft;
• and the output end is connected with the transmission device.

7, The pipe cutter according to claim 4, characterized in that:

• the transmission device comprises a first transmission gear, a second transmission gear and a third transmission gear, wherein the first transmission gear is installed on the output shaft of the decelerator;
• the second transmission gear and the third transmission gear are respectively engaged with the first transmission gear and the second transmission gear;
• the relative positions among the first transmission gear, the second transmission gear and the third transmission gear are fixed;
• and the cutting device is installed on a gear shaft of the third transmission gear.

10, The pipe cutter according to claim 4, characterized in that:

• the transmission device comprises a first transmission gear, a second transmission gear and a third transmission gear, wherein the first transmission gear is installed on the output shaft of the decelerator;
• the second transmission gear and the third transmission gear are respectively engaged with the first transmission gear and the second transmission gear;
• the relative positions among the first transmission gear, the second transmission gear and the third transmission gear are changeable;
• and the cutting device is installed on the gear shaft of the third transmission gear.

12, The pipe cutter according to claim 9, characterized in that:

• the transmission device also comprises a fixing plate;
• the first swinging mechanism and the second swinging mechanism comprise two swinging sheets;
• the fixing plate is installed on the rack in a sliding way and is sleeved on both ends of the gear shaft of the third transmission gear;
• the two swinging sheets of the first swinging mechanism are respectively sleeved on both ends of the gear shafts of the first transmission gear and the second transmission gear;
• and two swinging sheets of the second swinging mechanism are respectively sleeved on both ends of the gear shafts of the second transmission gear and the third transmission gear.

13, The pipe cutter according to claim 3, characterized in that:

• the power unit comprises a motor and a decelerator;
• one end of the decelerator is connected with the motor;
• the other end is provided with an output shaft;
• and the output end is connected with the transmission device.

15, The pipe cutter according to claim 14, characterized in that:

• the transmission device also comprises a fixing plate;
• the first swinging mechanism and the second swinging mechanism comprise two swinging sheets;
• the fixing plate is installed on the rack in a sliding way and is sleeved on both ends of the gear shaft of the third transmission gear;
• the two swinging sheets of the first swinging mechanism are respectively sleeved on both ends of the gear shafts of the first transmission gear and the second transmission gear;
• and two swinging sheets of the second swinging mechanism are respectively sleeved on both ends of the gear shafts of the second transmission gear and the third transmission gear.