FIELD: construction.
SUBSTANCE: invention refers to the field of machine building, namely to hydraulically driven crawler shovels. Hydraulic drive of crawler shovel comprises power pumps, control pump, distributor, hydraulic motors of stroke, power hydraulic lines, hydraulic lines of servocontrol with control units, hydraulic cylinders of caterpillar belt tension. Besides between each hydraulic cylinder of caterpillar belts tension and according power hydraulic lines of stroke, there is an additional circuit included, made of two drain check valves, discharge check valve, safety valve and hydraulic lines of servocontrol, at the same time piston cavity of hydraulic cylinder of tension of caterpillar belts is connected to discharge cavity of safety valve and through discharge check valve with discharge hydraulic line of servocontrol, and stem cavity - to drain cavity of safety valve and through drain check valves with power hydraulic lines of stroke.
EFFECT: invention provides for automatic tension of caterpillar belts independently on load on master wheels.
1 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TWIN-CIRCUIT EXCAVATOR DRIVE | 0 |
|
SU903492A1 |
| HYDRAULIC DRIVE OF SHOVEL EXCAVATOR | 1991 |
|
RU2019649C1 |
| HYDRAULIC MACHINE WITH HYDROSTATIC TRANSMISSION | 2013 |
|
RU2529111C1 |
| HYDRAULIC SYSTEM OF VEHICLE STEERING GEAR | 0 |
|
SU1197945A1 |
| EXCAVATOR HYDRAULIC DRIVE | 0 |
|
SU1105578A1 |
| HYDRAULIC SYSTEM OF ARMOURED REPAIR-AND-EVACUATION VEHICLE | 2014 |
|
RU2553620C1 |
| HYDRAULIC DRIVE FOR TIGHTENING CRAWLER BELT IN EXCAVATOR LAYING TRACKS MECHANISM | 1992 |
|
RU2046894C1 |
| HYDRAULIC DRIVE OF EXCAVATOR | 0 |
|
SU829824A1 |
| HYDRAULIC DRIVE OF SINGLE-BUCKET EXCAVATOR | 0 |
|
SU1691485A1 |
| APPARATUS FOR TENSIONING TRACK BELT | 2020 |
|
RU2758871C1 |
