41results about How to "Improve the quality of protection" patented technology

Impact shock absorbing material to be incorporated into protective gear or clothing. The impact shock absorbing material is a laminated material, having a shear-thickening layer and a shock absorbing layer, that is a honeycomb material. The laminated material is incorporated into protective headgear, sports gear, clothing, and a host of other articles that are worn for protection against impact shock. The shear-thickening layer shunts the local impact forces over a greater area of the underlying shock absorbing layer, thereby reducing the force at the point of impact. The vertical walls of the honeycomb layer buckle under the incoming force, thereby diffusing the direction of force away from direct alignment with the body wearing the impact-shock-absorbing material. Protective gear made of the impact shock absorbing material significantly reduces forces imparted to the body as a result of a fall, blow, or other sudden impact.

A curable nitrocellulose based coating composition having four essential components: nitrocellulose, polymerizable reactive diluents whose homopolymers have glass transition temperatures both above and below 25° C. and acrylated urethane. The composition may also contain an initiator whereby thermal or light curing of the composition can be achieved.

The invention discloses a construction method for a double layer storage tank with a flat suspended ceiling as an inner tank roof. The method comprises following steps: installation of an inner tank top ring wallboard, a flat suspended ceiling and an outer tank dome; simultaneously upside down lifting of the inner tank flat suspended ceiling, inner tank top ring wallboard and the outer tank dome; after the installation of the inner tank wallboard is finished, the outer tank wallboard is inversely mounted in order; after the construction of a thermal insulation layer between the inner tank base plate and the outer tank base plate is finished, an inner tank base plate is paved. By means of the construction method, the construction efficiency is effectively increased, the construction period is shortened, the difficulty for dumping and transferring the material in the inner tank is reduced, and construction cost is reduced.

The invention discloses an elastic epoxy resin coating and a preparation method thereof. The coating comprises epoxy resin, scales, modified resin, an additive, an assistant, a solvent and a curing agent, and is mainly used as a concrete anticorrosive coating. Compared with a common epoxy coating, the coating of the invention has excellent ductility and elongation at break, also has good corrosionresistance, can be widely applied to concrete structure protection in various heavy corrosion environments such as acid, alkali, salt, ocean, soil, chemical atmosphere and the like, and has excellentprotection performance.

The invention discloses a chest radiography anti-radiation X-ray camera system suitable for the indoor radiology department. The chest radiography anti-radiation X-ray camera system comprises a machine room, wherein a front isolation board and a rear isolation board are arranged in the machine room side by side, a front window is formed in the front isolation board, a rear window is formed in the rear isolation board, an emission area is formed in rear of the rear window, a physical examination area is formed between the front isolation board and the rear isolation board, an anti-radiation door of the physical examination area is arranged in the physical examination area, a DR flat-panel box is arranged in the physical examination area, a lifting box is arranged on the bottom of the DR flat-panel box, an X-ray area with the trapezoidal section is formed between the front isolation board and the top wall of the machine room, an X-ray bulb tube is arranged in the X-ray area, the X-ray bulb tube fixed to the rear wall of the machine room through a cushion plate, a light beam limiter is arranged at the emission end of the X-ray bulb tube, and the cross central lines of the light beam limiter, the front window, the DR flat-panel box and the rear window are overlapped. For the system provided by the invention, X-ray shooting is carried out on the position of an examined area by lifting an examined person, and the trapezoid-type lead plate protection of the X-ray area can effectively limit the emission direction of complement lines on the periphery of a main shooting beam of the X-rays; the X-rays penetrating through the rear window emit towards the tail and the bottom of the compartment after entering the emission area, and thus the integral protection quality is promoted.

The invention discloses an electric stapler with an automatic closing built-in safety. The electric stapler with an automatic closing built-in safety includes a main body of the electric stapler, wherein a movable handle is arranged at the bottom of the main body of the electric stapler, a safety closing device is arranged at the top of the movable handle, the safety closing device comprises a safety post, the lower end of the safety pillar is articulated with the movable handle, a surface of the main body of the electric stapler is provided with a sliding hole, a groove is arranged on the inner wall of the sliding hole, the safety pillar is slidably connected with the sliding hole, a clasp ring is arranged on the outer side of the safety pillar, a spring is arranged on the bottom of the clasp ring, the spring is fixedly connected with the inner wall of the groove, a fixing block is arranged on the top of the sliding hole, an inlet is arranged on the surface of the fixing block, the inlet is matched with the safety pillar, a clamping port is arranged on one side of the inlet, and a clamping plate is arranged inside the clamping port. As the safety close device is arranged, when theelectric push rod is close, the electric push rod pushes the card plate to be clamped in the bayonet, so that the safety pillar is fixed in the sliding hole.

The invention discloses a vehicle-mounted X-ray photography omnidirectional radiation-protection system. The omnidirectional radiation-protection system comprises a front isolation plate (1) and a rear isolation plate (6) which are fixedly arranged at two sides of a vehicle body in a carriage, wherein a physical examination area (5) is reserved between the two isolation plates; and an anti-radiation vehicle door (10), from which people can go on or off a vehicle, is arranged in the physical examination area. A penetrating-in window (2), from which an X-ray bulb tube, which is exposed, can pass through, is formed in the radiation-protection isolation plates. An X-ray penetrating-out window (7) and two X-ray refraction inclined planes, namely an upper X-ray drain area and a lower X-ray drain area, supported by virtue of a triangular bracket (16) are arranged on the rear isolation plate. According to the system, an X-ray main beam just enters from the penetrating-in window and is ejected out from the penetrating-out window after undergoing DR flat photography through position of a subject in the examination area, and then the X-ray main beam is refracted by the two inclined planes of the triangular bracket in the drain areas, so that the upper side of the X-ray main beam is drained towards a vehicle roof while the lower side is drained towards the floor of the carriage. With the application of the vehicle-mounted X-ray machine (the vehicle-mounted X-ray photography omnidirectional radiation-protection system) provided by the invention, omnidirectional radiation protection is conducted on the subject, so that overall protection quality is improved; and moreover, an occupied space is diminished, so that a service space of the carriage is increased.

The invention discloses an improved art knife guide rail for preventing knife breaking. The improved art knife guide rail comprises a knife shell body with an upward opening, a pushing button, a knifebody and a knife body protecting assembly, wherein a guide rail body is arranged in an inner cavity of the knife shell body, the pushing button is arranged in the guide rail, the knife body is connected with the guide rail body in a sliding manner through the pushing button, and the knife body protecting assembly arranged on the periphery of the knife body in a sleeving manner. The knife body protecting assembly is formed by a first installing plate, a second installing plate and a third installing plate. According to the improved art knife guide rail for preventing knife breaking, on the premise of ensuring the use quality of the knife body, suitability between the guide rail for the art knife body and the knife body is effectively improved, then the situations that in the using process,the knife body is damaged easily, and safety accidents are caused easily can be effectively avoided, and thus the use precision of the guide rail is effectively improved. In addition, by arranging the knife body protecting assembly, the knife body can be protected, the use flexibility of the art knife body is improved conveniently, and therefore the use precision of the knife body of the arc knife is effectively ensured.

A protective face shield comprising a mask portion and a handle portion, the mask portion having an exterior surface and an interior surface. The mask portion is readily operatively attachable to and removable from the handle portion, and the interior surface definines a cavity adapted to accept a substantial portion of a users face.

The invention discloses a vehicle-mounted anti-radiation X-ray camera system. For the vehicle-mounted anti-radiation X-ray camera system, a front isolation board and a rear isolation board are arranged in a compartment side by side, a front window is formed in the front isolation board, a rear window is formed in the rear isolation board, a physical examination area is formed among the front isolation board, the rear isolation board, side isolation boards, as well as the top wall and a terrace of the compartment, a DR flat-panel box is slantwise arranged in the physical examination area, a lifting box is arranged on the bottom of the DR flat-panel box, and a stand platform is movably arranged at the front side of the lifting box; an X-ray area is formed among a front side board I, a front side board II, a bottom board I, an end board, the front isolation board and the top wall of the compartment, and an X-ray bulb tube is arranged in the X-ray area; and an emission area is supported in the rear upper direction of the rear window through a bracket. For the system provided by the invention, X-ray shooting is carried out on the position of the examined area by lifting an examined person, and the trapezoid-type lead plate protection of the X-ray area can effectively limit the emission direction of complement lines on the periphery of a main shooting beam of the X-rays; the X-rays penetrating through the rear window emit towards the tail and the top of the compartment after entering the emission area, and thus the integral protection quality is promoted.

An anti-glare protection device for a welding mask includes a transmission control circuit for determining a darkening signal from a control signal, a welding activity detection circuit (6) for detecting a welding activity, based on the output of a first sensor circuit. The welding activity detection circuit is arranged to control, via an activation switch, whether either the darkening signal or a signal corresponding to an undarkened optical filter is input to a filter drive circuit. The filter drive circuit drives a controllable optical filter to a transmission value according to the signal input to the filter drive circuit. A manual input device allows a user to manually adjust a user selected signal. A second sensor circuit determines a sensed signal. A manually operable mode selection switch for selecting either, in a manual mode, the user selected signal or, in an automatic mode, the sensed signal to be used as the control signal to the transmission control circuit.

The invention discloses a protective mask isolated by a positive-pressure air barrier and a protective face shield isolated by the positive-pressure air barrier. The protective mask comprises an air pressurizing and filtering device, a pressurized and filtered air conveying pipe and a protective cover. The air pressurizing and filtering device comprises an assembly machine frame, a portable powersource, a pressurizing motor, an air pressurizing device, an air filtering device and a pressurized air output opening. The air pressurizing device comprises a dynamic vortex disc, a static vortex disc, a driving eccentric shaft and an anti-rotation mechanism. The air filtering device comprises a filter element sleeve shell and a filter element. A bottom frame of the protective cover comprises a human and cover sealing fit pressing strip and wearing rope belts. The cover face of the protective cover comprises a protective sealing cover face and a protective air barrier isolation cover face which is formed by an electrostatic adsorption layer, a pressure maintaining isolation layer and an air pressure barrier layer. The mask face and the bottom frame are connected in a sealing fit mode, thebreathing space is formed between the human and the mask, the pressurized and filtered air is provided by the pressurizing device, and the protective mask is not disposable, is good in sealing performance, can effectively filter viruses and suspended micro-particles and does not generate the breathing resistance.

The invention discloses a convenient-storing type pen container for a student. The convenient-storing type pen container for the student comprises a base, pen clamping boxes and a labelling bump, wherein a pen outlet is formed in the top part of the base, and drums are rotatably connected to two ends of the base through second rotating shafts; a turntable is welded at one end of one of the secondrotating shafts; a moving groove is formed in each drum, and two inner sides of the moving grooves are rotatably connected to the pen clamping boxes through first rotating shafts; and elastic inserting pins are electrically connected to two sides of the two inner ends of the moving grooves through springs. According to the convenient-storing type pen container for the student, the drums are rotatably connected into the pen container, and the pen clamping boxes are arranged in the drums, thus school supplies can be stored into the pen clamping boxes and are fixed through pen clamping plates, and the drums can be operated to rotate; and moreover, the school supplies can be obtained through the pen outlet in the top part of the base; the pens are completely separated from each other, so thatthe pens are prevented from damage caused by collision in the pen container, and as a result, the protection quality of the pen container is improved.

The invention discloses a hydraulic system with a redundancy protection function. The hydraulic system comprises a hydraulic oil source, a servo proportional valve, a main distributing valve and a guide vane servomotor, a differential pressure type hydraulic control reversing valve is arranged between the servo proportional valve and the main distributing valve, one control cavity of the differential pressure type hydraulic control reversing valve is connected with the hydraulic oil source, and the pressure is constant all the time; the other control cavity is connected with the hydraulic oilsource through a first solenoid valve, a second solenoid and a control solenoid valve, wherein inlet ends of the first solenoid valve and the second solenoid valve are connected with the control solenoid valve simultaneously, an outlet end of the first solenoid valve is connected with an inlet end of the second solenoid valve, and an outlet end of the second solenoid valve is connected with the differential pressure type hydraulic control reversing valve. Accordingly, energizing protection and power-lossing protection on a generator set are achieved, and meanwhile the hydraulic system has theadvantages of being high in reaction speed, high in reliability, stable in operation and the like.

The invention discloses a synchronous inversion construction method of a double-layer vault storage tank. The synchronous inversion construction method comprises the steps of installation of a bottom plate of an outer tank, installation of a cold insulation layer, installation of a bottom plate of an inner tank, positive installation of the inner tank, the outer tank (1 and 2) and wall plates, installation of a top plate of the outer tank, installation of a top plate of the inner tank, and synchronous construction of the wall plates of the inner tank and the outer tank. By the adoption of the construction method for constructing the double-layer storage tank, compared with a traditional construction method, the construction operation environment is improved, the construction efficiency is improved, the construction period is shortened, aerial operation is reduced, the safety coefficient is increased, the work amount of secondary mounting and dismounting of construction tools is reduced, pollution to the stainless steel inner tank is avoided, the finished product protection quality is effectively improved, and the construction cost is reduced.

A negative pressure ink supply device comprises a negative pressure gas path and an ink supply path, wherein, the negative pressure gas path comprises a vacuum pump, a negative pressure box and a two-level ink box, which are connected by a negative pressure pipeline, and the ink supply path comprises an ink supply pump and an ink supply pump controller. A first liquid level sensor is arranged inside the two-level ink box and is used for detecting whether the ink is full, and a second liquid level sensor is arranged inside the negative pressure box and is used for detecting whether the ink exceeds a first preset liquid level. The ink supply pump controller comprises a first control unit and a second control unit, wherein, the first control unit is used for controlling the ink supply pump to stop supplying ink when the first liquid level sensor detects that the two-level ink box is full, and the second control unit is used for controlling the ink supply pump to stop supplying ink when the second liquid level sensor detects that the ink exceeds the first preset liquid level. The embodiment of the invention also provides a corresponding protection method. The reliability and safety ofprotection of the negative pressure ink supply device is enhanced and the protection quality is improved through two-level detection and control.

The invention discloses a laser welding device for girth welding of large length-to-diameter ratio fuel rod cladding. The laser welding device comprises a laser welding head, a servo motor, a driving three-jaw chuck, a gas protective jacket, a driven three-jaw chuck and a plurality of bearing rollers, wherein the gas protective jacket comprises a protective jacket upper half part, a protective jacket lower half part, protective gas input pipelines, a protective lens support and a protective lens; the servo motor, the driving three-jaw chuck, the gas protective jacket, the driven three-jaw chuck and the bearing rollers are sequentially distributed from left to right. With the adoption of the device, welding of rotary workpieces which are made of different materials and have different diameters and different lengths can be realized, and the welding precision and the efficiency are high.

The invention discloses a low temperature preservation device with an electromagnetic freezing method applied, and an operation method of the low temperature preservation device. The low temperature preservation device comprises a low temperature and constant temperature tank, Helmholtz coils, a stabilized voltage supply and a cooling table, wherein the low temperature and constant temperature tank is connected with the cooling table through a circulating pump, the Helmholtz coils are distributed on the two sides of the cooling table, the stabilized voltage supply is connected with the Helmholtz coils, the cooling table is provided with a groove, and penicillin bottles filled with drugs or organisms are placed in the groove of the cooling table. The electromagnetic freezing method is utilized for storing the drugs or the organisms at a low temperature, and the integrity and timeliness of the stored drugs or the stored organisms are guaranteed.

The embodiment of the invention provides a file protection method, device and system, a computer readable medium and electronic equipment. The method comprises the steps: when it is detected that a file is used, acquiring the biological characteristics of a file user using the file; determining identity information of the file user through the biological characteristics; based on the identity information, determining the permission of the file user to use the file; and when the file user does not have the permission to use the file, executing an instruction for prohibiting the file user from using the file. According to the technical scheme provided by the embodiment of the invention, the security of the file in use can be improved.

The invention discloses a protection structure for a forest line fire inspection drone, which includes a storage frame, a guard plate, a main control board, a top defense board and a sponge clip. A protective structure is arranged above the storage frame. A baffle plate, and a main control board is sheathed in the middle of the baffle plate. The beneficial effect of the present invention is that: several concave slots set on the top ring are embedded and clamped to fix the components on the UAV, so as to ensure that the UAV is more stable and reliable for installation and use on the protective structure, and Cooperate with the sponge clip embedded between the UAV and the shield plate of the protective structure to provide shock absorption and buffer force for the UAV, reducing the vibration of the UAV during flight and the vibration between the UAV and the protective structure. The collision wear between them improves the service life of the UAV and the protective structure; the motor on the rotating bracket drives the rotor blade to rotate quickly to assist in driving the UAV flight work, ensuring the safety of the UAV flight inspection work. The power is more sufficient and the activities are more sensitive and faster.

The invention provides high-strength special-shaped H-shaped steel which comprises an H-shaped steel body. The H-shaped steel body is composed of an upper leg, a lower leg and a waist. The waist is connected between the upper leg and the lower leg. The upper leg and the lower leg are perpendicular to the waist. The high-strength special-shaped H-shaped steel is characterized by further comprising reinforcing ribs arranged on the waist; the H-shaped steel body and the reinforcing ribs are integrally formed. According to the high-strength special-shaped H-shaped steel, the door leaf production technology is simplified, the product quality and the production efficiency are improved, the door leaf resistance is enhanced, the sealing reliable performance is improved, and the high promotional value is achieved.

The invention discloses a carrying protection device used for the processing of advertising frame components, which comprises two rolling frames, a transfer frame, a swing frame and two protection mechanisms, the two rolling frames are arranged in parallel, and two The section of the rolling frame is "I" shaped structure. The beneficial effects of the present invention are: through the two protection mechanisms, respectively buckle and protect the frame member, to ensure better stability of the advertising frame member in the process of being processed and transported, and the first hydraulic cylinder pulls the protection through the first hydraulic shaft. The mechanism is turned over, and then the second motor drives the buckle plate and the pressure bar in the arc shape to turn over to ensure that the equipment can protect the advertising frame components of different volumes and widths, and then drives the second hydraulic cylinder through the second hydraulic cylinder. The height of the hydraulic shaft and the swing frame is adjusted up and down, and the crawler belt drives the advertising frame components to move back and forth to adjust, so as to ensure that the equipment can protect the advertising frame components of different volumes and shapes more accurately and appropriately.

The invention discloses a spectrum acquisition probe for a micro-Raman system, and relates to the technical field of micro-Raman spectrum systems. The spectrum acquisition probe for the micro-Raman system comprises a spectrum acquisition probe body. The spectrum acquisition probe body is provided with a threaded groove, the threaded groove is in threaded connection with a probe cap, the probe cap is rotatably connected with a mounting pipe, and the spectrum acquisition probe body is provided with a limiting mechanism for mounting and limiting the mounting pipe. A dehumidification mechanism and an air suction mechanism which are used for dehumidification in the mounting process of the spectrum acquisition probe body are arranged on the mounting pipe. According to the spectrum acquisition probe for the micro-Raman system, in the operation process, a dehumidification mechanism in the use process of the spectrum acquisition probe body can be formed, the situation that air containing moisture exists in the spectrum acquisition probe body and influences use of the spectrum acquisition probe body is avoided, and the authenticity of data in the use process of the spectrum acquisition probe is improved.

The invention relates to an electrolytic zinc blackening control method. The electrolytic zinc blackening control method comprises the steps of oil removing, hot water washing, rust removing, cold water washing, deionized water washing, galvanization, drying and storage. An electrolytic zinc blackening control measure is determined, the protective quality of a zinc coating on a product is also improved, and the electrolytic zinc blackening control method has very important value for reaching of an electrolytic zinc layer.

The invention relates to the technical field of brick-embedded staves in blast furnace construction, in particular to a construction method for vertically laying bricks inlaid with staves of a blast furnace. Step 1: Pressure test the water-cooled pipes of the stave and transport them to the construction site; Step 2: Turn the stave over on site and place it upright, and use the anti-tilt support frame to support and fix the stave; Step 3: Pop out the stave according to the actual width of the stave Lay the bottom row of inlaid bricks on the longitudinal center line of the stave; Step 4: Lay each remaining row of inlaid bricks in turn from bottom to top until all masonry is completed; Step 5: Hoist the stave after the masonry is completed. The construction process of this method is: pressure test of stave water-cooled pipe-transportation to site-site turning-over-masonry-hoisting. Compared with the traditional brick-embedded construction method, this method has simplified procedures, short construction preparation time, and low construction site requirements. , The scheme uses less material and less construction equipment, which improves the work efficiency and work quality.

The invention provides a high strength profiled channel steel comprising a channel steel body; the channel steel body comprises an upper leg, a lower leg and a waist; the waist is connected between the upper leg and the lower leg; the upper leg and the lower leg are vertical to the waist; the channel steel body also comprises an embedded press strip which is connected to the upper leg or the lower leg; the thickness of the upper leg or the lower leg at the right side of the embedded press strip is less than that of the upper leg or the lower leg at the left side of the embedded press strip; the channel steel body also comprises a reinforced rib which is installed at the waist. By means of the high strength profiled channel steel, the door leaf production technology is simplified, the product quality and production efficiency are increased, the resistance of door leaves is enhanced and the closing reliability is increased; the high strength profiled channel steel has high promotion value.