Loading patent…
AssigneeWacker Construction Equipment AG
InventorMartin Greppmair
Estimating the term…
A working machine, particularly an internal combustion engine-driven tamper for compacting soil comprises a tamping system, which is driven by the internal combustion engine and which is provided with an oil lubrication. The enclosure surrounding the tamping system comprises a small opening, which is situated downstream from an air filter and which leads into an air induction channel of the internal combustion engine. The cross-section of the opening is dimensioned so that it enables an equalization of pressure between the tamping system and the surrounding area and allows oil to travel from the tamping system and into the air induction channel of the engine. Oil for lubricating can be supplied to the engine via the opening. The opening is also suited for equalizing pressure which is particularly necessary when the tamping system and its enclosure heat up.
Working machine, in particular a tamper for ground-compaction which is driven by means of an internal combustion engine, having a working mass which can be driven linearly in a reciprocating manner by means of the drive motor for the purpose of exerting a tamping or percussive action, and having a tamping or percussion system which is surrounded by an enclosure (12) and in which the rotational movement of the drive motor is converted into a reciprocating linear movement and is transmitted to the working mass, wherein the tamping or percussion system is provided with oil lubrication and the air induction channel (30) of the motor is provided with an air filter (26), characterised in that the enclosure (12) which surrounds the tamping system is provided with a small opening (36) which opens out downstream of the air filter (26) into the air induction channel (30) of the internal combustion engine and whose cross-section is dimensioned so as to enable the equalisation of pressure between the tamping system and the surrounding area and to allow oil to travel from the tamping or percussion system into the air induction channel of the motor.
Working machine as claimed in any of the preceding claims, characterised in that the opening (36) opens out upstream of a Venturi-section of a carburettor, which is allocated to the motor, into the air induction channel (30).
Working machine as claimed in any of the preceding claims, characterised in that the opening (36) is formed in an interchangeable nozzle body (16;
Working machine as claimed in any of the preceding claims, characterised in that components of the tamping or percussion system which are subjected to abrasive wear consist of materials having effective sliding properties and low abrasion.
Dependencies are inferred from the claim text.