| 摘要 |
The hydraulic circuit (10) for the suspension system of a construction vehicle boom has a hydraulic cylinder (26) and a hydraulic tank (20) with a feed (18) and a reservoir (48). A control (12) has a first control pressure pipe (42) between a pipe breakage safety control (32) and a feed (18). The first pressure pipe has a switching valve (58) to vary the pressure in the pipe and operate a pressure limiting valve (34). |
