53results about How to "Simple and effective structure" patented technology

The invention relates to a simple rotor mechanism of a coaxial dual-rotor helicopter test stand. The rotor mechanism comprises an inner shaft, an outer shaft, an actuator group, a lower control system, an upper control system, an upper rotor propeller hub and a lower rotor propeller hub, wherein the upper rotor propeller hub comprises a first propeller hub seat, and a first paddle arm arranged on the first propeller hub seat in a full articulation manner; the lower rotor propeller hub comprises a second propeller hub seat and a second paddle arm arranged on the second propeller hub seat in a full articulation manner; the upper control system is connected with the first paddle arm; the lower control system is connected with the second paddle arm; the upper control system is connected with the lower control system via an intermediate draw bar; and the actuator group is connected with the lower control system to control synchronous motion of the first paddle arm and the second paddle arm. The mechanism can achieve collective pitch control and cyclic pitch change of coaxial dual rotors, and effectively achieves various dynamic tests of the helicopter such as upper and lower rotor aerodynamic characteristics of the coaxial dual rotors, dynamic stability of the rotors, and moving part loads of the rotors.

The invention discloses a coaxial cable. The coaxial cable comprises a conductive body, a foamed insulating layer, an outer conductor layer, a fiber sleeve and an insulating layer which are arranged from inside to outside in sequence, wherein the fiber sleeve is provided with a framework with frame holes; the framework is made from second fibers in a fusing manner; the framework is fixedly connected with the outer conductor layer and the insulating layer; first fibers are alternately inserted in the frame holes; and the first fibers are connected mutually to form a net shape. The coaxial cable provided by the invention adopts the framework structure made from the second fibers, and the fiber sleeve woven by the first fibers woven with metal wires, so that the coaxial cable is simple in structure, good in shock absorption effect, and relatively high in bending and stretching resistance; due to the fiber material, the metal wires can be woven conveniently, so that the coaxial cable protective layer has a relatively good shielding effect, the cost of the overall cable is relatively low, the weight of the cable is relatively low, and the cable obtains a higher economic effect; and due to the fiber material, the chemical performances of the coaxial cable protection layer can be expanded and improved conveniently.

The invention provides a wallboard structure fatigue testing machine clamp. The traditional clamp is connected with a high-frequency fatigue testing machine through connecting bolts, but the wallboard structure fatigue testing machine clamp provided by the invention utilizes clamping head embossing processing, thereby greatly avoiding stress integration of a clamp body during loading, simplifying the device and facilitating operations. A clamp press plate and a connection plate are connected by utilizing a circular arc groove manner, thereby meeting the requirement of a testing machine on the rigidity of the clamp to the greatest extent; the clamp press plate and a test piece are connected through bolts, and a friction type connection manner is utilized, so that the bolts only exert connection and location functions without bearing a shearing force. According to the wallboard structure fatigue testing machine clamp, the wallboard structure fatigue test requirements and integral design requirements can be met, the structure is compact, the appearance is simple, and the machine is convenient to use and maintain.

The invention discloses a respiratory support device, comprising a power supply assembly, a control board, a fan, a greenhouse, a humidifying chamber and a respiratory pipe. Compared with the relatedart, the respiratory support device of the present invention has low cost and good portability.

The invention provides a repaired array substrate, a repairing method and a display panel. The repaired array substrate comprises a substrate body, data lines, scanning lines and thin film transistors, the data lines, the scanning lines and the thin film transistors are arranged on the substrate body, the data lines and the scanning lines are arranged in a criss-cross mode and define a plurality of pixel areas, and each pixel area is internally provided with the corresponding thin film transistor; the thin film transistor comprises a grid electrode arranged on the substrate and connected withthe scanning line, a grid insulating layer covering the grid electrode, an active island arranged on the grid insulating layer and a passivation layer covering the active island; a groove is formed inthe passivation layer in the pixel area with defect points, and the groove is filled with a lightproof coating, so that the pixel area with the defect points is in a dark spot state through the lightproof coating. The repaired array substrate provided by the invention is suitable for repairing the bright spot defects generated in each production process step, and the repairing structure and the repairing process are relatively simple.

The invention belongs to the technical field of city parking equipment, and provides a double-layer lifting type three-dimensional garage. The double-layer lifting type three-dimensional garage comprises a quadrangle translational motion mechanism, a vehicle carrying plate folding unfolding mechanism, a vehicle carrying plate lifting mechanism, asynchronization connecting mechanism and a control system. The quadrangle translational motion mechanism is arranged to be a ten-rod mechanism with a winding engine imputing power. Under traction of ropes, folding and unfolding are achieved by linkageof two parallelogram mechanisms, and pushing out and retracting in of the vehicle carrying plate are achieved. The vehicle carrying plate folding unfolding mechanism is arranged to be a six-rod mechanism, and power is input by the winding engine. Ropes drive sliding blocks to move upwards and downwards to achieve folding and unfolding of the vehicle carrying plate. The lifting function of the vehicle carrying plate lifting mechanism is achieved by winding engine driving vehicle carrying plate. The synchronization connecting mechanism is arranged to be a group of simple straight rods to guarantee the front and rear groups of the mechanisms to move in synchronization and guarantee overall rigidity of the mechanisms. The garage is free of the problem of mutual interference between upper layervehicles and lower layer vehicles, floor space is small, movement is stable, installation is convenient, and fitness for old neighborhoods and for extension and transformation of a garage by a personis achieved.

The invention provides a mechanical transfer arm which comprises a first-stage driving device, a second-stage driving device and a third-stage driving device. A fourth-stage driving device or more can be arranged as needed. The first-stage driving device is connected with the third-stage driving device through a plug pin mechanism capable of being automatically opened and closed, so that three grades of mechanical transfer arms which are nested extend out in sequence, and the maximum extension amount can reach more than 850 mm. The device is concise and effective in structure, and the design pays attention to the compatibility of different ultrahigh vacuum experiment systems, so that the cost is reduced, operation is simplified, and the application range is widened.