Energy recovery apparatus
AssigneeReadi Robust Machine Co., Ltd.
InventorTae Rang Jung
Life of this patent
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Abstract
The present disclosure relates to an energy recovery apparatus, and more particularly, to an energy recovery apparatus for construction machinery and a construction machine including the same. According to the present disclosure, the energy recovery apparatus is able to recover and utilize energy wasted in the event of boom-down by including an accumulator assembly, to operate in various modes of operation, and to be easily installed in or detached from existing construction machinery.
Claims10
An energy recovery apparatus for construction machinery, which is installed in a construction machine having a cylinder moving up and down by means of a flow of oil and a boom driven by the cylinder, the energy recovery apparatus comprising:
- a bracket detachably fastened to the construction machine;
- an accumulator placed on the bracket and configured to accumulate oil;
- a main pipe placed on the bracket and connected to the cylinder;
- and
- a valve assembly placed on the bracket and connected to the main pipe, wherein the valve assembly comprises:
- a first line connected to a large chamber in the cylinder;
- a second line connecting the first line and the accumulator;
- and
- an LA valve provided to allow oil to flow only toward the accumulator in the second line and to enable control of its flow rate,
- wherein the valve assembly further comprises:
- a third line connecting the first line and the accumulator, and
- an AL valve provided to allow oil to flow only toward the first line in the third line and to enable control of its flow rate.
A construction machine comprising:
- a body;
- a cylinder connected to the body and moving up and down by means of a flow of oil;
- a boom connected to the body and driven by the cylinder;
- a bracket detachably fastened to the body;
- an accumulator placed on the bracket and configured to accumulate oil;
- a main pipe placed on the bracket and connected to the cylinder;
- and
- a valve assembly placed on the bracket and connected to the main pipe, wherein the valve assembly comprises:
- a first line connected to a large chamber in the cylinder;
- second and third lines connecting the first line and the accumulator;
- an LA valve provided to allow oil to flow only toward the accumulator in the second line and to enable control of its flow rate;
- and
- an AL valve provided to allow oil to flow only toward the first line in the third line and to enable control of its flow rate.
Dependencies are inferred from the claim text.