31results about How to "Wide range of motion" patented technology

The invention discloses a flexible parallel platform device, relates to a parallel platform device, and aims to solve the problem of incapability of meeting the requirements of high precision and larger working space in a micro operation environment in the conventional flexible hinge. The flexible parallel platform device comprises a shock isolation platform (1), an upper platform (2), a six-dimensional force sensor (3), three flexible branch chains (4) and three groups of platform assemblies (5), wherein the three groups of platform assemblies (5) are arranged on the shock isolation platform (1); the upper platform (2) is positioned above the three groups of platform assemblies (5); each group of platform assemblies (5) is connected with the lower end face of the upper platform (2) through one flexible branch chain (4); the six-dimensional force sensor (3) is arranged at the upper end of the upper platform (2); each group of platform assemblies (5) comprises a base (5-1) and a piezoelectric driving motor (5-2); the bases (5-1) are arranged at the upper ends of the piezoelectric driving motors (5-2). The flexible parallel platform device is applied to micro-operation of robots.

The invention provides a polyoxyethylene-based electrolyte and its preparation method and application. The polyoxyethylene-based electrolyte has a chemical structural formula as shown in formula I, wherein each Ar is independently phenyl or substituted by a sulfonic acid group phenyl, in all Ar, the substitution rate of sulfonic acid group is 1 / 36~1 / 12, and the sulfonic acid group is——SO3H‑M+, M+ is hydrogen ion or metal cation; R1 is C1~C10 An alkoxy group, R2 is a C1-C4 alkyl group, n is an integer of 10-800, m is an integer of 8-44, and x is 0.1-0.8. The solid electrolyte film comprising the polyoxyethylene-based electrolyte has good mechanical properties and electrical properties, and high lithium ion conductivity.

The invention discloses a silencer assembly. The silencer assembly comprises a shell, a first bottom plate, a second bottom plate, a first partition plate and an auxiliary plate. The shell is of a cylindrical structure with the two ends opened. The first bottom plate and the second bottom plate are arranged at the two ends of the shell, and a cavity is defined by the first bottom plate, the second bottom plate and the shell. The first partition plate and the auxiliary plate are arranged in the cavity in parallel and divide the cavity. The auxiliary plate is in sliding connection with the inner wall of the shell. A through hole is formed in the first partition plate and internally provided with an elastic membrane. Cutting openings are formed in the elastic membrane. The auxiliary plate is provided with protrusions different in height. The protrusions are provided with ventilation holes penetrating the protrusions and the auxiliary plate, and the protrusions can penetrate the cutting openings to be matched with the through holes. According to the silencer assembly, through the arrangement of the auxiliary plate capable of sliding relative to the shell, the distance between the auxiliary plate and the first partition plate and the number of the ventilation holes can be adjusted, single or comprehensive fine adjustment of noise eliminating or flow resistance is achieved, and when forward design cannot be accurately conducted, a rapid and convenient manner can be adopted for achieving the noise eliminating capability and flow resistance changes of sample pieces.