Hydraulic drive of walking machine with additional feedback on dynamic pressure
A hydromechanical feedback system adjusts pump volume based on cylinder pressure fluctuations, stabilizing the hydraulic drive's operation and improving accuracy by incorporating adjustable pumps and feedback sensors, addressing instability and inefficiency in walking machine drives.
RU2865228C1Active Publication Date: 2026-07-01FEDERALNOE GOSUDARSTVENNOE BYUDZHETNOE OBRAZOVATELNOE UCHREZHDENIE VYSSHEGO OBRAZOVANIYA UFIMSKIJ UNIV NAUKI I TEKHNOLOGIJ
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Patent Information
- Application Number
- RU2026106410
- Authority / Receiving Office
- RU · RU
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2026-03-11
- Publication Date
- 2026-07-01
- Estimated Expiration
- 2046-03-11
AI Technical Summary
Technical Problem
Existing hydraulic drives for walking machines suffer from instability in output characteristics and insufficient positioning accuracy due to non-stationary loads and random fluctuations, leading to unstable operation and inefficient power consumption.
Method used
Incorporating a hydromechanical feedback system that adjusts the pump's working volume based on dynamic pressure fluctuations in the hydraulic cylinders, using adjustable pumps, feedback sensors, and multi-position electro-hydraulic distributors to stabilize the drive's operation and improve positioning accuracy.
Benefits of technology
The solution enhances stability and accuracy of the hydraulic drive by adapting to variable loads, ensuring stable output characteristics and optimal power consumption.
✦ Generated by Eureka AI based on patent content.
Abstract
FIELD: machinery.SUBSTANCE: invention relates to volumetric hydraulic drives of mobile machines and can be used in electrohydraulic systems as a drive for controlling the chassis. The hydraulic drive of the walking machine comprises a pump station, hydraulic travel cylinders and electro-hydraulic distributors for controlling the position of the hydraulic travel cylinders. The pumping station comprises an adjustable pump, a drive motor, a tank with working fluid, safety valves and a filter and is connected to hydraulic travel cylinders equipped with feedback sensors. The electro-hydraulic distributors are multi-position. The hydraulic drive additionally comprises hydromechanical feedback on dynamic pressure of the hydraulic stroke cylinders, which includes a valve connected to the cavities of the hydraulic stroke cylinders, and also connected to a throttle, a spring-loaded plunger, and pushers with adjustable springs. The pushers themselves are mechanically connected to each other and linked via a rocker arm to a multi-position three-way distributor located inside the piston, which is mechanically connected to the pump.EFFECT: stable output characteristics and optimal power consumption of the pump depending on the actual loads acting on the actuator hydraulic cylinders.1 cl, 1 dwg
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