39results about How to "Less dangerous" patented technology

To provide a gas generating composition for air bag which is low in toxicity, large in burning rate, and low in combustion temperature. Gas generating compositions comprising (a) melamine cyanurate or a mixture of melamine cyanurate and nitrogen-containing organic compound and (b) oxygen-containing oxidant, and gas generating compositions comprising (c) binder and (d) additive are provided.

A wind turbine system is provided to generate electricity from wind energy. The system locates generator at a bottom portion of the tower. The system rotates either the entire tower, or the nacelle and the generator simultaneously. A flexible power transfer member inside the tower connects a top rotation transfer member and the bottom rotation transfer member to transfer wind energy captured by the turbine rotor from the top rotation transfer member to the bottom rotation transfer member. A pitch mechanism to rotate the rotor blades in a desired angular position about the rotor blades longitudinal axis is also provided.

The invention relates to a bookshelf, in particular to a bookshelf with freely adjustable placing space. According to the bookshelf capable of freely adjusting the placing space, people can conveniently take or place books at high positions, dangers are not prone to being generated, and the books can be limited. The bookshelf comprises a supporting cabinet, wherein movable sliding blocks are symmetrically arranged on the supporting cabinet in a sliding mode; a movable bookshelf which is rotationally mounted between the two movable sliding blocks; and a rotating mechanism which is arranged between the supporting cabinet and the movable bookshelf and is used for rotating the books. The movable rotating wheel is pulled to drive the transmission shaft to rotate, the transmission chain wheel assemblies on the left side and the right side are rotationally matched to drive the movable bearing frame to rotate, the movable bearing frame is always kept in a parallel state under the action of the limiting column, and then people can place or take books on the movable bearing frame, so people can conveniently take or place the books at high positions, and dangers are not liable to be caused.

The invention relates to the field of fans, and particularly relates to a blowing or induced draft device for pressurizing combustible and explosive as well as corrosive gases. When a working gas is a hazardous gas which is high-pressure, combustible, explosive, corrosive and the like, as a protective gas is arranged in a pressure vessel, an inside-outside pressure difference of a fan can be decreased; and therefore, higher rising pressure can be safely provided. By using the blowing or induced draft device for pressurizing the inflammable and explosive as well as corrosive gases, the pressure vessel is only needed to be filled with the protective gas, and a magnetic driver is not needed to be arranged additionally; therefore, the manufacturing cost is low; the structure is simple; and the production is easy. According to the blowing or induced draft device for pressurizing the inflammable and explosive as well as corrosive gases, a pressure gauge is adopted to monitor gas pressure in the pressure vessel and a gas inlet; the absolute value of a pressure difference between the protective gas and the working gas is guaranteed to meet the pressure resistance of a shell of the fan; therefore, the safe running of the fan is guaranteed; and moreover, the manual monitoring is not needed.

The invention discloses an adjustment-convenient intelligent monitoring and protecting device for pediatric-department transfusion. The device comprises a locking disc, a transfusion positioning baseinstalled on the surface of the locking disc and a shielding protecting frame fixed on the surface of the transfusion positioning base; a positioning device for locking and fixing is installed at thebottom of the locking disc, a transfusion protecting device is installed on the surface of the transfusion positioning base, the shielding protecting frame is adjusted on the surface of the transfusion positioning base through a comprehensive adjusting frame, a monitoring plate is installed at one end of the transfusion positioning base, an intelligent monitoring system is installed inside the monitoring plate, flexible protecting pads are arranged on the two sides outside the locking disc, and arc soft pads are arranged at the edges of the two ends of the flexible protecting pads. The fear feeling of transfusion of children is wholly and effectively reduced, and the difficulty during transfusion needle inserting is reduced; meanwhile, the angle is conveniently adjusted during transfusion,and the numb condition is avoided; comprehensive monitoring of the transfusion process is achieved in an intelligent mode, the device is integrated with the monitoring function and the protecting function, and the whole safety is greatly improved.

The invention discloses a numerical control machine tool for convenient cutting tool replacement. The numerical control machine tool comprises a base, the four angles of the top of the base are fixedly connected with support pillars, and the tops of the four support pillars are fixedly connected through an upper workbench. A working rotation shaft is arranged at the center of the bottom of the upper workbench, and the surface of the working rotation shaft is sleeved with a sleeve. The bottom of the sleeve is fixedly connected with a cutting tool mounting plate, and the center of the bottom ofthe cutting tool mounting plate is fixedly connected with a cutter. By the arrangement of the sleeve, the rotation shaft, a pressing pillar, a fixture block, a fixture groove, a fixed rod, a lifting pillar, a buckle plate, a release buckle and a jack seat, the numerical control machine tool solves the problem that the common numerical control machine tool is very inconvenient to replace the cutting tool, has simple mounting and dismounting steps, saves a lot of time and strength to replace the cutting tool, is beneficial to processing a workpiece, accelerates the machining process, has good stationarity for the cutting tool, and is not easy to raise risks.

The invention relates to a monitoring device, and particularly to a steel structure construction welding main beam monitoring device. Therefore the invention settles a technical problem of supplying the steel structure construction welding main beam monitoring device which does not require artificial direct monitoring to a steel structure, high monitoring accuracy and no easy danger. The steel structure construction welding main beam monitoring device is characterized in that the steel structure construction welding main beam monitoring device comprises a first mounting board, a second mounting board, etc.; the bottom end of the first mounting board is provided with the second mounting board which is rotatably mounted; the upper part of the first mounting board and the lower part of the second mounting board are provided with mounting holes; and the upper part of the right side surface of the second mounting board is provided with a connecting block. The steel structure construction welding main beam monitoring device can more accurately perform monitoring on the steel structure through the monitoring device; and through a viewing device, an operator can more conveniently view thepositions of a first conical block and a second conical block, thereby determining whether deformation of the steel structure occurs and realizing effects of high accuracy and no easy danger without artificial direct monitoring to the steel structure.

The invention relates to a rear plate turning mechanism for a special vehicle, which comprises a turning plate installed on a sub One end is connected, and there is an electric supporting leg on the turning board. The electric supporting leg includes a fixing seat fixed on the turning board, a supporting rod and a universal foot. The front of the lock head protrudes outward, and positioning holes are provided on the upper and lower sides of the protruding part. A clamp is provided in the middle of the protruding part, and a cavity is provided between the upper and lower sides of the clamp. The cavity is close to the end face of the lock head. A spring is arranged inside the body, and a limiting block is arranged outside the spring. The purpose of automatic turning can be realized by turning over the oil cylinder, the turning plate and the turning arm, and the supporting effect can be achieved by setting the electric support legs, which can place heavy items, save manpower, not easily cause danger, and improve work efficiency.