Hydraulic motor one-way driving device and hydraulic loop

The invention relates to a hydraulic motor one-way driving device and a hydraulic loop. The hydraulic motor one-way driving device comprises a reversing valve, a hydraulic motor and a first one-way valve, a first working oil port and a second working oil port of the reversing valve are connected through a first hydraulic oil path, and the hydraulic motor is arranged on the first hydraulic oil pathin series; and the first one-way valve is connected with the hydraulic motor in parallel, and the hydraulic motor is in driving connection with a one-way load. By means of a one-way connection function of the first one-way valve, the hydraulic motor and the one-way load are protected against reverse rotation. In addition, the reliability of the manner is high, and the situation that the one-way load reversely rotates due to an abnormal control situation of the reversing valve can be effectively prevented. 本发明涉及一种液压马达单向驱动装置和液压回路，液压马达单向驱动装置包括换向阀、液压马达和第一单向阀，换向阀的第一工作油口与第二工作油口通过第一液压油路相连接，液压马达串联设置在第一液压油路上，第一单向阀与液压马达并联设置，液压