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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-2026070764-A1, on 12 March 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000001929

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

Published
Permanent URL
Classification
Lifting, Positioning & Manipulation › Lift Tables and Positioners
Inventors
LIU YONGQIANG, LI ZHENHAO, XU MANQU, ZHENG HAIFA
Assignee
SNIT HYDRAULIC CO LTD
Original source
US-2026070764-A1, the United States Patent and Trademark Office, 12 March 2026
Document SHA-256
82583ef93efc20762d6a13af0fcbe09e7d784ac66cf3a90dc51ebc478ad31319

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.

Publication information

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Citation

OpenTechnical Publication OT-2026-000001929, “Oil circuit system, lifting device, electric jack, press, crane, and tire mounting/dismounting and transport apparatus,” published September 15, 2026 at 19:09:35 UTC, https://opentechnical.org/p/OT-2026-000001929.

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