Security air brake locking system

摘要

An air brake security locking system retains semi-trailers in a fixed position to prevent theft and is connected to an air brake line of the semi-trailer. The system includes a battery-powered valve which isolates air lines within the braking system at a low-pressure condition, thereby maintaining continuous braking of the wheels. The system includes a locked control box to secure and protect a user interface used to activate the system by entry of a numeric code using a keypad or by using a bypass key lock. A wireless remote actuation device is also utilized to activate the system from a distance. In a deactivated state, the system allows the braking system of the semi-trailer operates as normal. In an activated state, the system securely applies the spring brake units of the semi-trailer preventing movement and possible theft.

主权项

1. A security air brake locking system comprising:
a valve in fluid communication between a spring brake valve of a semi-trailer and a supply of compressed air, said valve comprising a valve body and a solenoid manual valve actuation switch, comprising:
a first pneumatic fitting at a valve outlet for pneumatic connection to said spring brake valve;a second pneumatic fitting at a valve inlet for pneumatic connection to said supply of compressed air; and,an electromechanical valve; a decoy handle rigidly affixed to said valve body over top of said solenoid switch and concealing said solenoid manual valve actuation switch to prevent access thereto and actuation thereof; a control circuit in electrical communication with said valve for selectably actuating said valve between an open position and a closed position; and, a battery in electrical communication with said control circuit and said valve for supplying a power source; wherein a plurality of spring brake units of said semi-trailer is disengaged in response to a high pressure condition and is engaged in response to a low pressure condition; wherein said valve selectively restricts a flow of compressed air from said supply of compressed air to said spring brake valve for maintaining said low pressure condition.