Motor bidirectional protection system, hydraulic pressure stranded cable machine and tow boat

The utility model relates to a hydraulic motor's protection return circuit field discloses a motor bidirectional protection system, hydraulic pressure stranded cable machine and tow boat, and this motor bidirectional protection system is including being connected with hydraulic motor (1) of first work oil circuit (2) and second work oil circuit (3), and be used for right brake oil jar (4) that hydraulic motor (1) driven operation element goes on brakeing, first work oil circuit (2) with be connected with protective oil way (6) between the second work oil circuit (3), be provided with control valve (5) on protective oil way (6), this control valve (5) set up into brake oil jar (4) are in the braking switch on during the brake position of operation element first work oil circuit (2) and second work oil circuit (3), it can just reverse two orientations to motor protection at the motor, prevents the operation element too high damage hydraulic motor of oil pressure in the casing that results in hydraulic motor tha