The invention discloses an overload-preventing lifting hook assembly of a crane. The overload-preventing lifting hook assembly comprises a first connecting rod and a first fixing plate, wherein an alarm is mounted at one corner of the top end of the first fixing plate; an alarm lamp is fixedly mounted at the other corner of the top end of the first fixing plate; when the weight of a hoisted cargoexceeds a set weight, the pressure of the cargo acting on the first fixing plate and the pulling force acting on the first connecting plate through the first connecting rod to jointly form a force forextruding a spring; as the weight of the cargo exceeds the set weight, a conductive column touches a conductive sleeve, the alarm and the alarm lamp are turned on at the same time, and meanwhile, thegravity acts as a torsion force on an overload block through a steel wire rope; and since the clamping force of a steel ball is not enough to resist the torsion force, the steel ball is extruded intothe overload block, the overload block rotates relative to a second fixing plate, and the steel wire rope on the overload block extends, so that a lifting hook cannot hoist the cargo, and the possibility that internal parts of the crane are pulled and damaged by the gravity is reduced.
本发明公开了一种起重机防过载吊钩总成,包括第一连接杆和第一固定板,所述第一固定板的顶端一角安装有警报器,所述第一固定板顶端的另一角固定安装有警报灯,当吊装的货物超过所设定的重量时,重物的压力作用在第一固定板上与拉力通过第一连接杆作用在第一连接板上共同形成一个对弹簧挤压的力,由于货物重量超过所设定的重量,使导电柱触碰到导电套,警报器与警报灯同时打开,同时重力通过钢丝绳对过载块起到一个扭力的作用,钢珠的卡力不足以抵挡扭力,使得钢珠被挤入过载块内部,使得过载块相对于第二固定板旋转,过载块上的钢丝绳延伸,从而使吊钩不能吊起重物,降低了起重机的内部零件被重力拉扯损坏的可能性。
Overload-preventing lifting hook assembly of crane
一种起重机防过载吊钩总成
2021-01-29
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
LIFTING HOOK ASSEMBLY ESTABLISHING LIFTING HOOK POSTURE DETECTION CARRIER, AND CRANE
European Patent Office | 2019
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