The invention relates to the field of cranes, and provides a crane boom head connecting structure and a crane. The arm head is hinged to the free end of the arm frame main body; the first driving device is used for driving the arm head to rotate around the arm frame main body; the ratchet wheel mechanism comprises a ratchet wheel and a pawl, the ratchet wheel is arranged on the arm head and rotates synchronously with the arm head, and the pawl is rotationally arranged at the end of the arm frame body and used for locking the ratchet wheel to prevent the arm head from rotating and falling when the arm head bears load; the second driving device is used for driving the pawl to be separated from or meshed with the ratchet wheel. According to the arrangement, the arm head can rotate at any angle around the end part of the arm frame main body, the angle of the arm head is flexibly adjusted according to a narrow space, the hoisting amplitude radius of the main arm is changed, the hoisting range is expanded, and the application requirements of narrow hoisting scenes are met. The rotation angle of the arm head can be matched through the ratchet mechanism, automatic locking at any angle is achieved, the arm head is prevented from falling due to bearing, the stress condition of the first driving device is improved, and the bearing capacity of the arm head is enhanced.
本发明涉及起重机领域,提供一种起重臂臂头连接结构及起重机,包括:臂架主体;臂头,铰接于臂架主体自由端;第一驱动装置,用于驱动臂头绕臂架主体转动;棘轮机构,包括棘轮和棘爪,棘轮设置于臂头上且与臂头同步转动,棘爪转动设置于臂架主体端部,且用于在臂头承重时锁定棘轮以阻止臂头转动下落;第二驱动装置,用于驱动棘爪与棘轮分离或啮合。如此设置,臂头可绕臂架主体端部进行任意角度转动,根据狭窄空间灵活调整臂头角度,改变主臂吊载幅度半径,扩大吊载范围,满足狭小吊装场景的应用需求。且通过棘轮机构可匹配臂头转动角度,实现任意角度自动锁止,防止臂头因承重而下落,改善第一驱动装置受力情况,增强臂头承载能力。
Boom head connecting structure and crane
起重臂臂头连接结构及起重机
2023-12-12
Patent
Electronic Resource
Chinese
IPC: | B66C Krane , CRANES |