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Linkage mechanism capable of achieving precise vertical rectilinear motion

A technology of linear motion and link mechanism, applied in manipulators, program-controlled manipulators, manufacturing tools, etc., can solve problems such as inability to realize vertical linear motion, insufficient shrinkage, complex kinematic parameters, etc., and achieve easy control of deployment speed, The effect of compact structure and easy kinematics

Pending Publication Date: 2019-12-13
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

[0003] Chinese patent CN201110093972.6 presents a precise linear motion mechanism. The middle platform of the mechanism is an isosceles triangle, and the two rotating pairs on the middle platform are arranged along the waist, showing an intersecting relationship, resulting in the oblique intersection between the moving platform and the fixed platform. , the moving platform can only achieve oblique linear motion, not vertical linear motion, the kinematics parameters are complex, and the contraction is not compact enough when folded; in addition, the mechanism needs to be designed to synchronously drive the two revolving pairs on the frame to achieve linear motion
Chinese patent CN201110077493.5 presents a precise linear motion mechanism, which is asymmetrical, and the drive branch contains multiple local degrees of freedom, which is prone to interference, and the contraction of the entire mechanism is not compact enough when folded

Method used

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  • Linkage mechanism capable of achieving precise vertical rectilinear motion
  • Linkage mechanism capable of achieving precise vertical rectilinear motion
  • Linkage mechanism capable of achieving precise vertical rectilinear motion

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Embodiment Construction

[0011] In order to make the purpose, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0012] Such as figure 1 As shown, a link mechanism for precise vertical linear motion is characterized in that it includes a base 9, a first rotating pair 11, a first connecting rod 1, a second rotating pair 12, a first connecting block 7, a third Turning pair 13, second connecting rod 2, fourth turning pair 14, motion platform 10, fifth turning pair 15, third connecting rod 3, sixth turning pair 16, second connecting block 8, seventh turning pair 17, The fourth connecting rod 4, the eighth rotating pair 18, the ninth rotating pair 19, the fifth connecting rod 5, the tenth rotating pair 20, the sixth connecting rod 6 and the eleventh rotating pair 21; the above-mentioned base 9, connecting rod , the rotary pair and the motion platform 10 have the follow...

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Abstract

The invention provides a linkage mechanism capable of achieving precise vertical rectilinear motion. The linkage mechanism comprises a pedestal, connecting blocks, a motion platform, connecting rods and rotating pairs, wherein the connecting rods and the rotating pairs are connected between the pedestal and the motion platform. The connecting rods and the pairs of the mechanism are in mirror symmetrical structure. The linkage mechanism has the advantages that in the stretching and retracting process of the linkage mechanism, the motion platform can achieve vertical rectilinear motion, and thelinkage mechanism is simple in kinematics, easy to drive and high in rigidity and bearing capacity; and meanwhile, the mechanism is compact in structure, small in size in complete retraction and convenient to store. Thus, the linkage mechanism has good application prospects in space stretchable supporting arms, stretchable wings and stretchable tongs.

Description

technical field [0001] The invention relates to the field of motion mechanisms, in particular to a link mechanism for precise vertical linear motion. Background technique [0002] Linear motion mechanisms have important applications in the fields of walking robots, internal combustion engines, long-stroke equipment, and space exploration technology, especially in expandable support arms, solar panel brackets, expandable wings, expandable grippers, and The deployable antenna and other aspects have good application prospects. [0003] Chinese patent CN201110093972.6 presents a precise linear motion mechanism. The middle platform of the mechanism is an isosceles triangle, and the two rotating pairs on the middle platform are arranged along the waist, showing an intersecting relationship, resulting in the oblique intersection between the moving platform and the fixed platform. , the moving platform can only achieve oblique linear motion, not vertical linear motion, the kinemati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J9/00
CPCB25J9/0048
Inventor 曹文熬张德景自强丁华锋刘文东刘鹤亭席胜
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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