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ABSTRACT
The subject of this graduation project of mine is : Bear seat
Automatic upper and lower mechanism of materials of the loco-
motive. Design the automatic upper and lower materiel special--
purpose organization mainly . The automatic upper and lower
mechanism of materials designed this time utilize hydraulic
pressure system and machinery to cooperate electrically, realize
automatic job circulation of transfer machine , hydraulic
pressure it is rational to influence working performance of
transfer machine directly for system to design .So essential for
design method and principle systematic in hydraulic pressure
of the transfer machine to probe into .In every engineering step
after a job circulation ,at strength , the speed , the direction ,
these three parameters ,not only have request for quantity, but
also have request for the quality . So should make automatic
upper and lower mechanism of materials realize required job
circulation , guaranteeing the working performance needed,
the method is varied , so has confirmed the plan of design
systematic in hydraulic pressure lees the systematic picture
of the hydraulic pressure according to this concrete conditions
of designing the question . A good upper and lower material
device should reach : 1) Improve and equip productivity and
worker’s labor productivity, lighten worker’s labour intensity
notably . 2) It is reliable that the work is steady ,operate the
noise littly ,will not damage the work piece ,have long perf—
ormance life . 3) The structure compactness is simple , it is
good that the maximum adopts the standardized spare part
commonability , easy to make , easy to maintain , with low
costs , prove according to theory above—mentioned automatic
upper and lower material special—purpose organization that
design reach requiring basically.
Key words: manipulator, hydraulic pressure system.