| 摘要 |
PURPOSE: To improve rigidity of a rear beam by reducing an opening of the rear beam as well as compacting the circumference of a valve by making an axis of a discharge port roughly vertically downward. CONSTITUTION: Discharge ports 14, 15 are arranged downward on a rear part lower part of a control valve unit 5, and discharge pipings 41, 42 are connected to them. Consequently, the discharge pipings 41, 42 are below a rear beam 51 and do not make contact with the rear beam 51, and accordingly, an opening 51a becomes roughly the same as before in shape and size at a part adjoining to the control valve unit 5. Additionally, as the discharge ports 14, 15 are on the left side of a steering valve unit 30, a space equivalent to a hatching part X on the right side of this steering valve unit 30 can be saved, the opening 51a can be reduced and rigidity of the rear beam 51 can be improved. Additionally the discharge pipings 41, 42 can be shortened in piping length between the discharge ports 14, 15 and a piping connecting part of a cylinder 21. |
