OPENTECHNICAL PUBLICATION
OT-2026-000001929

Oil circuit system, lifting device, electric jack, press, crane, and tire mounting/dismounting and transport apparatus

Published: 2026-09-15T19:09:35.077853Z
Permanent URL: https://opentechnical.org/p/OT-2026-000001929
Categories: Lifting, Positioning & Manipulation > Lift Tables and Positioners

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ABSTRACT

The disclosure discloses an oil circuit system, a lifting device, an electric
jack, a press, a crane, and a tire mounting/dismounting and transport
apparatus. The oil circuit system comprises a lifting oil cylinder, the tank,
the first oil feed line, the second oil feed line, the oil inlet/outlet line,
the pressure relief line, the oil return line, the first valve, the second
valve; the first oil feed line is the gear pump assembly oil feed line; and
the second oil feed line is the plunger pump assembly oil feed line. Under
no-load or low-pressure conditions of the lifting device, the gear pump
assembly can quickly pump a larger volume of low-pressure hydraulic oil,
enabling quick lifting or lowering of the lifting device. Under high-pressure
conditions, the plunger pump assembly can quickly pump higher pressure
hydraulic oil to the lifting oil cylinder to enable slow lifting or lowering.

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OpenTechnical publication OT-2026-000001929
Published 2026-09-15T19:09:35.077853Z
https://opentechnical.org/p/OT-2026-000001929