The invention discloses a lorry-mounted crane safety protection device which comprises a limiting pin detection switch, a buzzer, an instrument relay and an alarm relay. One end of the limiting pin detection switch, one end of a normally-closed contact of the instrument relay and one end of a normally-open contact of the alarm relay are connected with the positive electrode of a lorry-mounted crane power supply, and one end of a coil of the instrument relay and one end of a coil of the alarm relay are connected with the other end of the limiting pin detection switch; the other end of the instrument relay coil and the other end of the alarm relay coil are both grounded, the other end of the normally closed contact of the instrument relay is connected with an instrument in a cab, and the buzzer is connected with the other end of the normally open contact of the alarm relay. When the limiting pin is inserted into the rotary table, the buzzer is used for alarming and reminding, and when the limiting pin is not inserted, the instrument is used for reminding that the limiting pin is not inserted, so that safety accidents caused when the lorry-mounted crane is in a running state are avoided.
本发明公开了一种随车起重机安全保护装置,包括有限位销检测开关、蜂鸣器、仪表继电器和报警继电器,限位销检测开关的其中一端、仪表继电器常闭触点的其中一端和报警继电器常开触点的其中一端均与随车起重机供电电源的正极连接,仪表继电器线圈的其中一端和报警继电器线圈的其中一端均与限位销检测开关的另一端连接,仪表继电器线圈的另一端和报警继电器线圈的另一端均接地,仪表继电器常闭触点的另一端与驾驶室内的仪表连接,蜂鸣器与报警继电器常开触点的另一端连接。本发明在转台上插入限位销时,通过蜂鸣器进行报警提醒,当限位销未插入时,通过仪表进行未插入提醒,避免随车起重机处于行驶状态下,发生安全事故。
Safety protection device for lorry-mounted crane
一种随车起重机安全保护装置
2025-01-03
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
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