32results about How to "Structure sensitive" patented technology

The invention discloses a water hammer air valve and a water hammer gas discharging method during pipeline use. The water hammer air valve comprises a valve body, a bonnet and a protective cover, wherein the bonnet is provided with an opening, the protective cover is disposed on the opening, the valve body is provided with a valve opening for being communicated with a pipeline, a high-speed gas feeding and discharging device which is used for discharging gases stayed in the pipeline during water filling to the outside and shutting down the valve after pipeline water filling is completed is disposed in the inner cavity of the valve body, the output end of the high-speed gas feeding and discharging device is communicated with the outside through the opening of the bonnet, and the valve opening of the valve body is communicated with a bottom gas discharging throttling device for limiting the gas displacement of the pipeline to the inner cavity of the valve body; a trace gas discharging device for discharging mixed, residual and / or precipitated gases in the pipeline to the outside through the opening of the bonnet after the high-speed gas feeding and discharging device shuts down the valve is further disposed in the high-speed gas feeding and discharging device. By the water hammer air valve, water hammer reduction and pipeline safety protection are achieved, blowing blocking during high-speed gas discharging is avoided, and valve closing water hammer is eliminated.

The invention relates to a police antiriot automatic steel rim comprising a handle portion and a steel fork body. The steel fork body is in the shape of a hollow tube and includes a pair of forked outer tubes diverged into two parts. A fixing pin is arranged inside the tubes between the pair of the forked outer tubes. Inner tubes are arranged in the two forked outer tubes, the shapes of the inner tubes are matched with the shape of the forked outer tubes, and the inner tubes can be telescoped relatively to the forked outer tubes. A spring used for ejecting the inner tubes out of the outer tubes is arranged between the inner tubes and the fixing pin. Limit guiding devices used for controlling movements of the inner tubes are arranged at the end of the forked outer tubes. An inner tube locking device is arranged on the outer side wall of the forked outer tubes close to the fixing pin. The police antiriot automatic steel rim is simple in structure, once any part of the body of a prisoner or a thug touches a locking connection rod, the inner tubes in the forked outer tubes are instantly ejected out to form annularity with the forked outer tubes, the thug is locked inside the annular steel rim and can be arrested and subdued rapidly, the arrested prisoner or thug is not easy to escape, and barriers are omitted in the arresting process.

The invention discloses a pneumatic exoskeleton power assisting device. The pneumatic exoskeleton power assisting device comprises a body wearing part, a controlling system and two executing devices. The two executing devices are connected together through the body wearing part; each executing device comprises a haulage cable, a power device, a rotating joint and a supporting point part, wherein the supporting point part is worn on a leg; each power device comprises an air pump, a rack and a power air cylinder; each rotating joint comprises an upper joint portion and a lower joint portion, the upper portion of the upper joint portion is fixedly connected with the rack, and the lower portion of the upper joint portion is hinged to the upper portion of the lower joint portion; and the controlling system comprises a manual control valve, a three-position three-way pneumatic valve and a striking type pneumatic valve, the manual control valve is connected with the three-position three-way pneumatic valve and the striking type pneumatic valve, an air inlet port of the striking type pneumatic valve is connected with the air outlet control end of the three-position three-way pneumatic valve, and an air outlet port of the three-position three-way pneumatic valve is connected with the power air cylinders. The pneumatic exoskeleton power assisting device has the advantages that the man-machine interaction is good, the structure is smart and light, the reaction is quick, and operation is easy.

The invention discloses a flowing speed sensor and a fabrication method thereof. The flowing speed sensor comprises a dual-layer polyimide film substrate, a graphene / polyimide piezoresistance unit anda signal lead. By arranging a simulated hair structure and the graphene / polyimide piezoresistance unit on a surface of the dual-layer polyimide film substrate, the flowing speed can be further measured by measuring stress change of the piezoresistance unit caused by bending of the simulated hair structure under an effect of an external fluid. The flowing speed sensor is simple in structure, and mass production is easy; with the design of employing simulated hair to sensor the flowing speed of the external fluid, the flowing speed sensor has the advantages of structural sensitivity and high measurement accuracy; and moreover, the flowing speed sensor employs a polyimide film as a flexible substrate, and the flowing speed sensor is more conveniently arranged on an arc wing surface and otherprobable curved surfaces.

The invention discloses an exoskeleton assisting device, which comprises a body wearing part, a control system and two actuators, the two executing devices are connected through the body wearing part, and the executing device includes a traction cable, a power part, a rotating joint and a fulcrum Components, the power part includes a frame and a power cylinder, the rotary joint includes an upper joint part and a lower joint part, the upper part of the upper joint part is fixedly connected with the frame, and the lower part of the upper joint part is hinged with the upper part of the lower joint part; the control system includes a controller, Electric proportional valve, trigger sensor and angle sensor, the electric proportional valve is connected with the power cylinder; the trigger sensor is connected with the controller; the angle sensor is arranged on the rotary joint, the angle sensor is connected with the controller; the controller is connected with the electric proportional valve. The invention has the advantages of good man-machine interaction, light and handy structure, quick response and easy operation.