Abstract: A box-shaped protective cover that covers an upper structural portion of a body of a vibrating compactor is manufactured by executing a cutting process for fashioning a single metal plate into a shape including a first planar portion, a second planar portion, an intermediate portion, and a plurality of side flaps, a bending process for bending or curving the side flaps and the intermediate portion, and a welding process for welding a side flap of the first planar portion to a side flap of the second planar portion.

Abstract: The present invention provides a method of manufacturing a sufficiently strong, box-shaped protective cover for a vibrating compactor inexpensively using a small number of processes and only simple processes, and provides a protective cover for a vibrating compactor. A box-shaped protective cover that covers an upper structural portion of a body of a vibrating compactor is manufactured by executing a cutting process for fashioning a single metal plate into a shape including a first planar portion 1, a second planar portion 2, an intermediate portion 3, and a plurality of side flaps 5 (5a to 5d), a bending process for bending or curving the side flaps 5 and the intermediate portion 3, and a welding process for welding a side flap 5a (or 5b) of the first planar portion 1 to a side flap 5c (or 5d) of the second planar portion 2.

Abstract: A travel control device for vibrating plate compactor which can easily switch the travel direction of a large sized compactor weighing more than 500 kg by a hydraulic pump circuit having a servo valve to supply pressure from outside for switching the travel direction in order to shift the rotational phase of one of the rotors in the vibration generator. The travel control device receives the mechanical return force from the vibration generator at one end thereof in the cylindrical body and is provided at other end with a piston positioned to receive the pressure oil from an outside hydraulic pump, a push rod to operate said piston inserted into the other end of the body from outside, and a spool for servo valve at the side opposite to the side receiving said mechanical return force of said piston to supply the pressure oil from said hydraulic pump by operating said push rod.