Flushing and cooling method for hydraulic motor

By using an independent hydraulic motor flushing and cooling method, and utilizing a flushing and cooling device composed of a hydraulic pump and valve assembly, the flow rate of cooling oil is monitored and adjusted in real time, which solves the heat dissipation problem of hydraulic motors under harsh working conditions and achieves efficient cooling and energy saving.

CN120946655AActive Publication Date: 2025-11-14ZHUZHOU TIMES ELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202511237724.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-01
Publication Date
2025-11-14
Estimated Expiration
2045-09-01

AI Technical Summary

Technical Problem

Existing hydraulic motor cooling methods are ineffective in heat dissipation under harsh working conditions and cannot meet cooling requirements, especially in closed hydraulic systems where the cooling effect of multiple hydraulic motors is still unsatisfactory.

Method used

An independent hydraulic motor flushing and cooling method is adopted. The flushing and cooling device, consisting of a hydraulic pump and valve group, including a proportional flow valve, a pressure sensor and a check valve, monitors and adjusts the flow rate of cooling oil in real time to form a direct flushing and cooling circuit for the hydraulic motor housing. After being cooled by the cooler, the oil flows back to the oil tank.

Benefits of technology

It improves the cooling effect of hydraulic motors, achieves efficient cooling of multiple hydraulic motors, has a high degree of integration, is suitable for flushing and cooling of multiple motors, has flow distribution and automatic adjustment functions, and has significant energy-saving effect.

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Abstract

The invention discloses a hydraulic motor flushing and cooling method which comprises the following steps: S1) judging whether a closed hydraulic circuit runs or not, if not, continuing judging, and if so, executing the next step; s2, a hydraulic pump is started, cooling oil is provided for the hydraulic motor, a proportional flow valve is started, the cooling oil enters a flushing opening of the hydraulic motor through the proportional flow valve, and cooling is started to be provided for the hydraulic motor; s3) monitoring numerical values of the pressure sensors in real time, if the numerical value of a certain pressure sensor reaches a set value, considering that oil passing through the corresponding proportional flow valve is too much, and reducing the opening degree of the corresponding proportional flow valve; s4, if the numerical value of the pressure sensor is smaller than the set value, the original opening degree of the corresponding proportional flow valve is kept unchanged; s5, when the closed hydraulic loop stops working and the hydraulic motor stops working, the hydraulic pump is closed, and meanwhile the proportional flow valve is closed. The technical problems that an existing hydraulic motor cooling method is poor in heat dissipation effect, and the heat dissipation cooling requirement cannot be met under the severe working condition can be solved.
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