37results about How to "Long life span" patented technology

The invention discloses a method for arresting large-tonnage ships, which is characterized in that at least two fixed piers are arranged above water, at least a constant resistance device is arranged between the two adjacent fixed piers, then an arresting gear with ultimate tension less than or equal to the horizontal strike resistant force of the fixed piers is taken, one end of the constant resistance device is connected with the arresting gear and the other end thereof is connected with the fixed piers, finally a plurality of spaced buoys are arranged between the two adjacent fixed piers and the arresting gear is fixedly connected with the upper parts of the buoys. The method has the following advantages: the large-tonnage ships at higher speed can be effectively arrested, the fixed piers and the arresting gear can be prevented from damage or breakage due to excessive stress, the method ensures the effectiveness of arresting and is suitable for extensively protecting the large-tonnage ships with immense kinetic energy from striking the bridges; in addition, the arresting system used in the method has long life cycle, is convenient to replace and maintain and has relatively low cost, thus being suitable for engineering.

The invention discloses a method for preventing and controlling waxberry orchard fruit flies by using housefly pupas to replace fruit fly pupas for breeding parasitic wasps. The method comprises the steps of (1) housefly pupa obtaining and (2) pachycrepoideus vindemmiae breeding. Through the adoption of the technical scheme, pachycrepoideus vindemmiaes bred by the housefly pupas can realize higher control efficiency on the control of fruit flies, so the prevention and control cost is greatly reduced; the pachycrepoideus vindemmiae obtained by the method has the characteristics that the reproductive capacity is obviously higher, the progeny yield is obviously higher, the individual lifetime is obviously longer, the individuals are obviously larger, and the like.

The invention relates to a solar cell, in particular to a solar cell packaging method which has efficient water-oxygen isolation capacity and can effectively protect the solar cell so as to remarkably prolong service life of the solar cell. The method includes: adding graphene into epoxy resin, and dispersing the graphene in the epoxy resin to obtain graphene modified epoxy resin; adding a curing agent into the graphene modified epoxy resin for blending to obtain a curable graphene modified epoxy resin composite, if the area of a solar cell device is less than or equal to 2.5cm*2.5cm, adopting an adhesive dropping process; if the area of the solar cell device is more than 2.5cm*2.5cm, taking photovoltaic ultra-clear glass as an upper layer and a photovoltaic back plate as a lower layer, filling a gap between the upper layer and the lower layer with the curable graphene modified epoxy resin composite to enable the solar cell to be wrapped; curing the curable graphene modified epoxy resin composite to complete packaging of the solar cell.

The invention relates to a flue ash removal device adopting axial moving type scrapers and an application method of the flue ash removal device. The flue ash removal device comprises a flue pipe which is internally provided with a sleeve; the inner side wall of the sleeve is provided with fan blades which are arranged at intervals in the circumferential direction and used for enabling the sleeve to rotate through wind energy in the flue pipe and move axially in the favorable wind direction; the outer side wall of the sleeve is provided with the ash scrapers in the circumferential direction at intervals; and the flue pipe is further provided with a driving device used for enabling the sleeve to axially travel in the flue pipe against the wind. The flue ash removal device is not only simple in structure, but also can remove ash in a flue in all directions, and is easy and convenient to use.

The invention discloses a pair of pneumatic tongs, which belongs to the technical field of machine tool clamps. The pair of pneumatic tongs comprises a base, an air cylinder, an upper tong body and a lower tong body, wherein the middle part of the upper tong body is hinged with the lower tong body through a pin shaft; and the rear end of the upper tong body is connected with the tail end of a piston rod of the air cylinder through a pin shaft. The pair of pneumatic tongs is characterized in that: an air cylinder cover, an air cylinder drum and an air cylinder base are fastened on the lower tong body through two contour pads by a bolt; two slide columns are strung on the air cylinder cover, the lower tong body and the base; a linear bearing is arranged in a base hole through which the slide columns pass; the tail end of the piston rod is a flat tail; a round waist hole is formed on the flat tail; a roller sleeve is arranged in the round waist hole; and the pin shaft connecting the rearend of the upper tong body and the tail end of the piston rod is sleeved in the roller sleeve. The pair of pneumatic tongs has a reasonable and simple structure, low material waste, low machining cost, good anti-rust function, high sealing effect and long service life and is easy to manufacture. The air cylinder is connected with the lower tong body at a plurality of points; the connection area is large; and the connection strength is high. The pair of pneumatic tongs is strong in overall rigidity; the deformation displacement of a tong tooth part during working is small; and the service lifeis long.

The invention belongs to the technical field of experiment equipment, and especially relates to a flexible detachable whirlpool mixer. The flexible detachable whirlpool mixer comprises a mixer main body and a flexible test tube stand; a shaking platform is arranged on the upper end of the mixer main body; the flexible test tube stand is arranged on the shaking platform; the flexible test tube stand comprises a test tube stand main body; the test tube stand main body is prepared from an elastic material; a vibration frequency modulating device, a timing device, a signal emitting and receiving device, and a controller are arranged in the mixer main body; remote controlling of the controller with the outside world is realized through the signal emitting and receiving device or mobile phone communication; a signal emitting device and corresponding control buttons are arranged on a remote control unit; adopted mobile phones are installed with APPs. The flexible detachable whirlpool mixer suitable for a vertical structure can be used for vibration and vortex large amplitude experiments, is capable of realizing effective vibration mixing when test tubes are maintained at vertical states,and avoiding splashing of reagents caused by vibration; and remote control of the flexible detachable whirlpool mixer can be realized through terminal wireless signals, and operation is convenient.

The invention relates to a method for operating an electric or hybrid vehicle with shiftable transmission, in which at least one electric motor is employed for propelling the vehicle. Upon reaching a shift threshold, a shift operation is performed in the transmission of the vehicle, wherein a value specifying the shift threshold is varied depending on at least one parameter. As the at least one parameter, a speed (26, 36) is used, at which a power provided by the at least one electric motor for propelling the vehicle has a maximum (30, 38). Furthermore, the invention relates to an electric or hybrid vehicle.

The invention describes a novel, simple and low-consumption daylight lamp which is characterized in that two ends of a strip-shaped lamp body are provided with plugs; the lamp body is internally provided with a lamp slot; the lamp slot is provided with a PCB (Printed Circuit Board); the PCB is provided with an LED (Light-Emitting Diode) light source; the LED light source is externally provided with a transparent lampshade; a power plug is connected with the plug at one end by virtue of a connecting line. Compared with the prior art, the novel, simple and low-consumption daylight lamp is reduced in energy consumption, convenient to install, concise, prolonged in service life and environment-friendly.