| 摘要 |
PURPOSE: A ram locking control device for wheel type construction machinery is provided to detect the pneumatic pressure applied to four wheels in construction machinery and to improve the convenience and safety of a driver by automatically performing locking or unlocking. CONSTITUTION: A ram locking control device for wheel type construction machinery comprises a parking brake switch (22), switch units (23,24), first to fourth wheel pneumatic sensors (31-34), a ram locking unit, a control unit (10). The first to fourth pneumatic sensors separately detect the pneumatic pressure of wheels to transmit. The ram locking unit locks a ram when a ram device is not in use. The control unit unlocks a plurality of rams when detecting the driving of construction machinery. The control unit locks the rams when the difference between the pneumatic pressure of front wheels and rear wheels is at a predetermined level of higher. [Reference numerals] (10) Control unit |
