摘要:
A vibration tamper for packing soil has a guide handle elastically hinged on a tamper head of the tamper. The pivot point of the guide handle is located on the tamper head above an imaginary perpendicular extending from the grip area of the handle to the tamper longitudinal axis, and/or the handle has a special distribution of mass with regard to its pivot point.
摘要:
A hand manipulated tamping machine has a diesel engine mounted on the side with its shaft part way down the machine casing. The engine shaft is coupled to an intermediate shaft coaxial therewith. Gears connect the intermediate shaft to a crankshaft positioned above the intermediate shaft. A connecting rod encircles the intermediate shaft and extends from the crankshaft to the spring set which actuates the tamping foot.
摘要:
In a rammer powered by an internal combustion engine, the engine is placed on a side of an upper part of a rammer main body with its crankshaft extending in parallel with the handle bar of the rammer, and the cylinder axis of the engine slanted sideways so that the overall height of the rammer may be controlled even when a relatively large engine is employed. The engine is mounted on the rammer main body so that the center of gravity of the engine is on the axial center line of the rammer main body as projected on a plane perpendicular to the crankshaft. Therefore, a relatively large engine can be used without destroying the balance of the rammer, and the rammer, therefore, would not produce any tendency to tilt during use. Thus, the rammer is easy and comfortable to handle even when a relatively large engine is mounted thereof.
摘要:
A vibration tamper for soil compacting has a guide handle proceeding from the tamper head, which is pivoted elastically on the tamper. At the same time, the handle has a special mass distribution with regard to its pivot point.
摘要:
A pneumatically operated percussion apparatus for compacting soil, or other material. The apparatus includes a gear case that supports a percussion unit that is adapted to engage the soil to compact the same. A pneumatically operated motor is mounted on the gear case and air is supplied to the motor via a manually-operated "deadman" valve unit. A centrifugal clutch connects the output shaft of the motor to the percussion unit. The air flow to the motor is controlled by a governor to obtain a substantially uniform rotational speed for the motor output shaft.