FIELD: machine building.
SUBSTANCE: system of hydraulic drives with a redundant control circuit for releasing the load consists of a control device, two hydraulic drives with a series-connected electric motor, a controlled pump, a booster pump, boost back pressure valve, boost check valves, power hydraulic lines, hydraulic motor, friction brake, hydraulic motor reducer. Each hydraulic drive is equipped with a hydraulic cylinder of a friction brake, which is a one-way hydraulic cylinder with a spring, which is controlled by an electrohydraulic distributor. Latter is fed via release check valves arranged in hydraulic lines and controlled by hydraulic drive control device. Hydraulic cylinder of the friction brake is connected to the electrohydraulic distributor via the OR valve. Hydraulic actuators are connected by brake release hydraulic lines connected crosswise to inputs of each OR valve.
EFFECT: reliability of the load release circuit is increased.
1 cl, 1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| VOLUMETRIC HYDRAULIC DRIVE | 0 |
|
SU718635A1 |
| VEHICLE RUNNING GEAR HYDROSTATIC TRANSMISSION | 0 |
|
SU1303446A1 |
| SELF-PROPELLED MACHINE FOR TREATMENT OF ALUMINIUM ELECTROLYTIC CELLS | 2015 |
|
RU2593251C1 |
| TRACTION AND-TRANSPORT VEHICLE | 2002 |
|
RU2232685C1 |
| HYDRAULIC POSITIVE-DISPLACEMENT DRIVE OF TRANSPORT FACILITY; SYSTEM FOR AUTOMATIC RENEWAL OF WORKING FLUID IN HYDRAULIC DRIVE; PUMPING UNIT; CONDITIONING AND REVERSING SYSTEM OF DRIVE; HYDRAULIC MOTOR UNIT OF DRIVE | 1996 |
|
RU2108507C1 |
| TRACTION VEHICLE | 0 |
|
SU1111910A2 |
| CONTROL AND STEERING SYSTEM FOR MULTIAXLE VEHICLE | 0 |
|
SU1065251A1 |
| SYSTEM FOR SERVOCONTROL OF EXCAVATOR HYDRAULIC DRIVE | 0 |
|
SU1079780A1 |
| POSITIVE-DISPLACEMENT HYDRAULIC DRIVE OF SELF-PROPELLED VEHICLE | 0 |
|
SU1397317A1 |
| CABLE DRUM HYDRAULIC DRIVE | 0 |
|
SU641176A1 |
