Flexible six-degree-of-freedom platform

Abstract

The invention belongs to the technical field of flexible multi-degree-of-freedom platforms, and relates to a flexible six-degree-of-freedom platform. The flexible six-degree-of-freedom platform comprises an upper platform and a lower platform which are detachably connected, wherein the lower platform comprises a base and a mounting plate arranged on the base through a first driving mechanism; themounting plate can perform left-right translation, front-back translation and yawing motion on the base under the action of the first driving mechanism; the upper platform is arranged on the mountingplate through a second driving mechanism; the second driving mechanism can drive the upper platform to perform front-back pitching, left-right swinging and up-down lifting motion on the mounting plate; and the first driving mechanism comprises three driving assemblies, two driving assemblies are arranged in parallel, and the other driving assembly is perpendicular to the two driving assemblies which are arranged in parallel. The flexible six-degree-of-freedom platform not only has six complete degrees of freedom of a Stewart platform, but also has the characteristics of compact structure, small occupied space, easiness in flexible combination and the like, has great market value, and is worthy of wide popularization and application.

Description

technical field [0001] The invention belongs to the technical field of multi-degree-of-freedom flexible platforms, and in particular relates to a flexible six-degree-of-freedom platform. Background technique [0002] Six-degree-of-freedom platforms are widely used in dynamic flight theaters, flight simulators, dynamic cabins, vehicle driving simulation systems, etc. Most of the six-degree-of-freedom platforms on the market are designed based on Stewart parallel mechanisms. A set of private electric cylinders, hydraulic cylinders or air cylinders with the same specifications are connected in parallel at the head and tail, which has the advantages of good rigidity, strong load capacity, and low cost. It has been developed for decades since it was proposed; the Stewart six-degree-of-freedom platform The rigidity is good, so that it can run at a large acceleration without causing obvious deformation of the structure, and the stress of each structural member is good; the Stewart ...

AI Technical Summary

Problems solved by technology

[0002] Six-degree-of-freedom platforms are widely used in dynamic flight theaters, flight simulators, dynamic cabins, vehicle driving simulation systems, etc. Most of the six-degree-of-freedom platforms on the market are designed based on Stewart parallel mechanisms. A set of private electric cylinders, hydraulic cylinders or air cylinders with the same specifications are connected in parallel at the head and tail, which has the advantages of good rigidity, strong load capacity, and low cost. It has been developed for decades since it was proposed; the Stewart six-degree-of-freedom platform The rigidity is good, so that it can run at a large acceleration without causing obvious deformation of the structure, and the stress of each structural member is good; the Stewart platform has the characteristics of strong load capacity, and the load it can carry can range from hundreds of The change from kilograms to tens of tons has advantages that series-type structural equipment does not have; however, due to the structural characteristics of its parallel connection, it also has inherent deficiencies, mainly as follows: 1. The overall space occupied by the platform The size is relatively large. At present, the amusement equipment industry and the field of intelligent manufacturing have a tendency to develop towards miniaturization and integration. The growth point is the field of intelligent manufacturing. On the premise of meeting the existing industrialization needs, major intelligent manufacturers are actively exploring innovative research and development of consumer-grade industrial products, all of which put forward more challenges for the miniaturization and integration of equipment. Due to the high requirements, the Stewart platform greatly limits its further application due to the large space it occupies; 2. The reuse rate of equipment and related spare parts is low. Due to the structural characteristics of the Stewart platform, its main drive components are often dedicated to special machines. When there are major adjustments in external parameters or changes in customer needs, the Stewart platform and its related components often need to be redesigned and purchased, which will cause a great waste of resources; 3. The degree of flexible design is low, the main driver of the Stewart platform The head and tail of the mechanism are connected in parallel and have six degrees of freedom. This characteristic makes it very difficult to realize its flexible design. It is difficult for designers to customize only some of the six degrees of freedom according to customer needs. Manufacturers In response to the needs of customers, the design can only be re-modified, resulting in a waste of human resources for the enterprise

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