The invention discloses a rotating sleeve in-place rotation and locking mechanism on an L-shaped suspension arm. The rotating sleeve in-place rotation and locking mechanism solves the problem of how to achieve in-place rotation and reliable locking of a rotating part in the L-shaped suspension arm of a square frame. A semicircular eaves board is fixedly connected to the bottom end of a rotating sleeve of an L-shaped suspension arm, three cylindrical through holes are formed in the semicircular eaves board at equal intervals in a radian mode, a pluggable positioning pin is arranged in the middle cylindrical through hole, and pin hole cylinders with step inner through holes are fixedly connected into the other two cylindrical through holes. The diameter of an upper stepped hole of the pin hole cylinder is larger than that of a lower stepped hole of the pin hole cylinder, a downwards-pressed positioning steel ball is arranged in the two stepped holes, the lower end of the positioning steel ball can stretch out to the position below the pin hole cylinder, and four pin holes are formed in the top end face of a horizontal index plate matched with the rotating sleeve. The lower end of the positioning steel ball can be movably embedded into a hole opening of the pin hole, so that accurate positioning of 90-degree rotation of the rotating sleeve is realized; and the phenomenon that the pointed conical surface of the locking pin and the locking hole cannot be locked in the hole is avoided.
本发明公开了一种L型吊臂上的转动套筒旋转到位及锁定机构,解决了如何实现方框框架的L型吊臂中的转动部分的旋转到位和可靠锁定的问题;在L型吊臂的转动套筒底端固定连接有半环形檐板,在半环形檐板上等间隔弧度设置三个柱形通孔,在中间的一个柱形通孔上设置有可拔插的定位销,将另两个柱形销孔中固定连接有带台阶内通孔的销孔筒,销孔筒的上台阶孔直径大于下台接孔直径,在这两个台阶孔中设置有下压的定位钢珠,定位钢珠的下端可探出到销孔筒的下方,在与转动套筒配合的水平分度盘的顶端面上设置有四个销孔,并使定位钢珠的下端可活动嵌入到销孔的孔口内,实现对转动套筒旋转90的准确定位;避免了锁定销的尖锥面与锁定孔不能入孔锁定的发生。
Mechanism for rotating in place and locking rotating sleeve on L-shaped suspension arm
L型吊臂上的转动套筒旋转到位及锁定机构
2023-10-13
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |
European Patent Office | 2023
|Synchronous rotating locking lifting appliance mechanism
European Patent Office | 2021
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