Folding arm crane
A crane and boom type technology, applied in the field of knuckle boom cranes, can solve the problems of the negative influence of knuckle boom motion sensitivity and accuracy, and the inability to achieve position compensation, and achieve the effect of ensuring smoothness
Pending Publication Date: 2019-01-25
SHENZHEN LONGHAITE ROBOT TECH CO LTD
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Problems solved by technology
Nevertheless, the folding arm structure also has insurmountable disadvantages
The existing folding arm structure cannot realize position compensation, which has a serious negative impact on the movement sensitivity and accuracy of the folding arm
Method used
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Embodiment 1
[0035] see figure 1 , this embodiment discloses a folding arm crane 1000, including a rotary joint 0100, a flexible transmission mechanism 0300 and a position compensation mechanism 0400, which are used to realize follow-up synchronous position compensation and ensure the stability, sensitivity and accuracy of the folding arm rotary motion .
[0036] The swivel joint 0100 includes a first horizontal arm 0110, a second horizontal arm 0120, and an articulation shaft 0130 to realize the articulation of the two, forming the basic joint structure of the folding arm. Under the hinged relationship, the second horizontal arm 0120 can rotate around the hinge axis 0130 so as to be folded or unfolded relative to the first horizontal arm 0110 . It can be understood that the hinge shaft 0130 is installed on one of the first horizontal arm 0110 and the second horizontal arm 0120 and has relative rotation with the other. Exemplarily, the hinge shaft 0130 is installed on the first horizonta...
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A folding arm crane comprisies a swivel joint comprising a first horizontal arm, a second horizontal arm and an articulated shaft for articulating the two horizontal arms; a flexible transmission mechanism comprising a fixed wheel set, a horizontal moving wheel and a flexible component, wherein the fixed wheel set is arranged on the articulated shaft and comprises axial vertical fixed wheels arranged in a pair, the horizontal moving wheel is axially disposed horizontally on the second horizontal arm, the flexible component is sequentially connected with the first horizontal arm, any one of thepaired vertical fixed wheels and the horizontal moving wheel in the tension mode, and the flexible component can be linearly and reciprocally held between the pair of vertical fixed wheels; a position compensating mechanism comprising a cam and a follower set, wherein the cam is disposed on the articulated shaft, and the follower set is driven by the cam to drive the horizontal moving wheel to move up and down relative to the second horizontal arm. The folding arm crane can keep the center of gravity of a load relative to the horizontal position and the vertical position of the second horizontal arm, achieve following synchronous position compensation and ensure smoothness, sensitivity and precision of rotary motion of a folding arm.
Description
technical field [0001] The invention belongs to the technical field of hoisting, in particular to a knuckle-arm type crane. Background technique [0002] The jib is an important lifting mechanism. The traditional jib is generally equipped with an electric hoist on the straight jib to directly apply the lifting effect. The electric hoist is very heavy, and generally adopts I-shaped steel guide rails, which causes the horizontal movement inertia of the electric hoist to be very large, and the horizontal movement is very inconvenient. . [0003] In order to realize the horizontal movement of the load, the industry has proposed a knuckle-arm structure. The folding arm structure is generally composed of multiple folding arms hinged step by step, and the horizontal movement of the load is realized by the rotational movement between the folding arms. Nevertheless, the folding arm structure also has disadvantages that are difficult to overcome. The existing folding arm structur...
Claims
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IPC IPC(8): B66C23/68
CPCB66C23/68
Inventor 蔡昌荣李满天王鹏飞陈国校周广宁李雪冰贾王强刘建伟
Owner SHENZHEN LONGHAITE ROBOT TECH CO LTD