Universal mechanical arm
The invention relates to a universal mechanical arm. The universal mechanical arm comprises a plurality of joint connecting rods (11) connected through joint balls (12). The universal mechanical arm is characterized by further comprising a pre-tightening device used for positioning the joint connect...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention relates to a universal mechanical arm. The universal mechanical arm comprises a plurality of joint connecting rods (11) connected through joint balls (12). The universal mechanical arm is characterized by further comprising a pre-tightening device used for positioning the joint connecting rods (11). Special-shaped holes (112) communicating through a middle hole (113) are formed in the two ends of each joint connecting rod (11) respectively, and stepped holes (121) communicating with each other are formed in the two ends of each joint ball (12) respectively. A length-adjustable traction cable (14) is arranged at the output end of the pre-tightening device, penetrates through the middle hole (113) of each joint connecting rod (11) and is fixed on the outer side of the joint connecting rod (11) at the farthest end. The universal mechanical arm has the advantages of being simple and compact in structure, convenient and fast to use, high in automation degree, high in controllability and the like.
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