Three-rotational-freedom series-parallel driving mechanism

A driving mechanism and a degree of freedom technology, which is applied in the field of three-rotation degree of freedom hybrid drive mechanism, can solve the problems of increasing the quality of the motion branch chain, unfavorable high-speed motion of the mechanism, etc., and achieves high bearing capacity, simple structure, and reduced production and maintenance costs. Effect

Active Publication Date: 2012-10-24
CIVIL AVIATION UNIV OF CHINA
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Problems solved by technology

[0003] For this reason, Chinese Invention Patent Application No. 200610102017.3 discloses a spatially asymmetric two-degree-of-freedom rotating parallel mechanism, which uses two UPS branch chains with the same structure (U stands for Hooke hinge, P stands for moving pai

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  • Three-rotational-freedom series-parallel driving mechanism

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Embodiment Construction

[0011] The three-rotation-degree-of-freedom hybrid driving mechanism provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0012] Such as figure 1 As shown, the three rotation degrees of freedom hybrid drive mechanism provided by the present invention is composed of a two rotation degrees of freedom parallel mechanism and a 360° rotation degree of freedom mechanism connected in series; wherein the two rotation degrees of freedom parallel mechanism includes a static platform 8, located on the static platform The dynamic platform 10 above the 8 and a constraint branch chain and two drive branch chains connected between the static platform 8 and the dynamic platform 10; the constraint branch chain is composed of the static platform connection support 3 and the Hooke hinge 2 Wherein the static platform connecting support 3 is vertically arranged, the lower end is fixed on the surface middle of ...

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Abstract

Provided is a three-rotational-freedom series-parallel driving mechanism. One two-rotational-freedom parallel mechanism and a 360-degree-rotational-freedom mechanism are in series connection to form the three-rotational-freedom series-parallel driving mechanism. The two-rotational-freedom parallel mechanism comprises a static platform, a movable platform located above the static platform, a restraining branched chain and two driving branched chains, wherein the restraining branched chain and the two driving branched chains are connected between the static platform and the movable platform. Each driving branched chain is composed of a guide mechanism, a moving pair, a Hooke hinge, a connecting rod and a spherical hinge. The three-rotational-freedom series-parallel driving mechanism is simple in structure. Due to the fact that driving motors of the two driving branched chains are fixedly connected with the static platform, moving mass of the three-rotational-freedom series-parallel driving mechanism is small, and high speed is achieved easily. Due to the fact that the connecting rods of the two driving branched chains are two-force rods, the three-rotational-freedom series-parallel driving mechanism is high in bearing capacity. If used for driving a flight simulation control cabin to move, compared with a Stewan parallel mechanism, the three-rotational-freedom series-parallel driving mechanism can greatly reduce production and maintenance cost of a flight simulator and has wide application prospect.

Description

technical field [0001] The invention belongs to the field of hybrid mechanisms, in particular to a three-rotation-degree-of-freedom hybrid drive mechanism formed by connecting a parallel mechanism with two degrees of freedom and a mechanism in series with one degree of freedom. Background technique [0002] The cockpit on a full-mission flight simulator is usually driven by a Stewart parallel mechanism, which can realize six-degree-of-freedom movement in space. However, the disadvantages of this mechanism are small working space, difficult motion solution, complex structural design, and high price. With the opening of China's low-altitude field, general aviation will develop rapidly, so the demand for training pilots of helicopters and private jets and the demand for flight simulators will also increase rapidly. If the flight simulation cockpit has only three rotational degrees of freedom, the pilot can still feel the change of the aircraft attitude. [0003] For this reaso...

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Application Information

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IPC IPC(8): G09B9/20
Inventor 洪振宇许致华张志旭
Owner CIVIL AVIATION UNIV OF CHINA
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