The invention discloses a bridge-falling type crane and a crane beam thereof. The falling bridge type crane comprises a mounting frame, a crane beam and a crane car, movable plates are movably mounted on the outer walls of the sides, away from each other, of two movable frames, falling alarm mechanisms are arranged between the two movable plates and the mounting frame, protection plates are movably inserted into two feedback grooves, two protection grooves are symmetrically formed in the outer walls of the two sides of the crane beam, a falling triggering mechanism is arranged between the movable plate and the protection plate, and an automatic lubricating mechanism is arranged between the two movable frames and the mounting frame. When the crane car load falls, the alarm is triggered to play a prompting role, and when the falling amplitude is too large, the protection plate is clamped into the protection grooves to protect the crane car, and the falling condition is prevented; and lubricating oil in the piston cylinder is sprayed to the position of the rotating part of the crane car through transverse movement of the crane car to achieve lubrication, the smoothness of transverse movement of the crane car is improved, and the working efficiency and quality are improved.
本发明公开了一种落桥式起重机及其起重机梁,包括安装架、机梁和起重车,两个移动架相远离一侧外壁上均活动安装有活动板,两个活动板和安装架之间均设有下坠警报机构,两个反馈槽中均活动插设有保护板,机梁两侧外壁上对称开设有两个保护槽,活动板和保护板之间设有下坠触发机构,两个移动架和安装架之间设有自动润滑机构。本发明在起重车负载出现下坠时,触发警报器起到提示的作用,其次,在出现下坠幅度过大时,利用保护板卡进保护槽中来保护起重车,防止出现坠落的情况;利用起重车的横向运动来实现将活塞缸中的润滑油喷到起重车的转动件位置实现润滑,提高了起重车横向运动的流畅性,提高了工作效率和质量。
Bridge-falling type crane and crane beam thereof
一种落桥式起重机及其起重机梁
10.12.2021
Patent
Elektronische Ressource
Chinesisch