| 摘要 |
<p>PURPOSE:To secure brake locking for special type automobiles without erroneuous operation by providing divergently a lock brake system covering from brake chamber operating compressed air passage to air tank through double-check valve. CONSTITUTION:A lock brake system 12 is provided additionally to a normally operating brake system 1 consisting of air tank 2, brake valve 3, relay valve 4, brake chamber 5 and brake lever 6. The lock brake system 12 has a locking compressed air passage 14 diverging from a brake system 12 has a locking compressed air passage 14 diverging from a brake chamber operating compressed air passage 9 of the normally operating brake system 1 through a double-check valve 13, and a three-port connection solenoid valve 15 is arranged in the passage 14. Then, a series circuit with an operation switch 16 to close at the time of engine operation, a brake locking operating switch 17 and a side brake switch 18 is connected to the solenoid valve 15, and a storage circuit 21 to close a contact 20 when all the switches 16-18 are closed is connected to the switch 18.</p> |
