Tamping unit as well as frame type tamping device and ballast tamping equipment comprising tamping unit

The invention relates to a tamping unit, a frame type tamping device comprising the tamping unit and ballast tamping equipment, and belongs to the technical field of rail transit. A box body of the unit is approximately symmetrical W-shaped, the left end and the right end of the box body are respectively provided with a guide sleeve which forms a vertical moving pair with a guide piece, an eccentric crankshaft part is supported above the middle part, and the middle parts of a left pickaxe arm and a right pickaxe arm are respectively hinged between the left end and the middle part and between the right end and the middle part; the eccentric crankshaft component comprises eccentric crankshafts which form hinge pairs with the inner ends of cylinder bodies of the left clamping oil cylinder and the right clamping oil cylinder respectively; the left and right clamping oil cylinders comprise left and right piston rods of which the extending ends are respectively hinged with the upper parts of the left and right pick