118results about How to "Improve bending deformation" patented technology

The invention provides a manufacturing method of bent bamboo furniture and bent bamboo rod pieces. The manufacturing method involves manufacturing of the bent bamboo rod pieces and bent bamboo plate pieces. According to the method, bamboo is divided into long-strip-shaped bamboo filaments or bamboo splits after bamboo skin and bamboo pith which can affect the bonding performance are removed; adhesives are arranged on the surfaces of the bamboo filaments or the bamboo splits after the bamboo filaments or the bamboo splits are dried; plate blank is formed in a planar cold press in a cold pressing mode; the plate blank is arranged in a bending forming die in an overlaying mode, pressing is conducted to enable the plate blank to form bent-plate-shaped bent bamboo rod plates, the bent bamboo rod plates and the die are sent into a heating chamber to be heated and cured, after the die is disassembled, according to the requirements of bent bamboo rods, the plates are cut into bent bamboo rods in a sawing mode in the bending direction of the bamboo filaments, and the bent bamboo rod pieces are formed after the surfaces are smoothed; meanwhile, the bamboo is sawed off at fixed length and divided into rectangular bamboo strips, assembly is conducted according to the requirements of the plate blank, the plate blank is arranged in a drying and shaping die to be compressed, and drying, heating and shaping are conducted to form bent bamboo plate piece panels; the surfaces of the panels are coated with adhesives, the panels are laid in a heat curing die, and pressing, heating and curing are conducted to obtain the bent bamboo plate pieces.

The invention relates to a piezoelectric energy harvesting device for a bus. The piezoelectric energy harvesting device comprises a plurality of cantilever beams of piezoelectric vibrators, the cantilever beams are horizontally and parallelly arranged, the ends of the cantilever beams on one side share a mass block (3), the mass block is connected with a lever (5) and used for increasing inertia of the piezoelectric vibrators and transferring stress, the lever leads out vibration, piezoelectric ceramic pieces (2) are positioned on the upper side and the lower side of a cantilever beam substrate (1), the piezoelectric ceramic pieces (2) and the substrate (1) are adhered through conductive adhesives, so that weak mechanical energy in an environment is converted into electric energy, a piezoelectric energy storage device comprises a voltage reduction circuit, a rectifier circuit, a filter circuit and a protection circuit, and stable direct current used or stored by loads is obtained when unstable current generated by the piezoelectric vibrators flows through each regulating circuit. The stored energy can be used for low-power instruments such as a bus detector, an electronic display guideboard, a self-service ticketing device and front-rear television inspection systems, energy-saving effects are achieved, and the piezoelectric energy harvesting device is simple in structure.

The invention relates to a preparation method of a graphical three-dimensional graphene/polyurethane flexible conductive film. The preparation method comprises the steps of growing a three-dimensional structured graphene material; performing original-position patterning; applying a flexible substrate material on the three-dimensional structured graphene material; solidifying the flexible substrate material for forming a film; and directly peeling from a growth substrate for obtaining the three-dimensional graphene/polyurethane flexible conductive film, wherein the three-dimensional graphene has a three-dimensional continuous structure with a nanometer-size. The film substrate is made of a polyurethane elastomer high-polymer material with certain flexibility. Patterning technology comprises the steps of nanoimprinting, ion beam direct writing, etc. The graphical three-dimensional graphene/polyurethane flexible conductive film has high performance at aspects of electric conductivity, flexibility, etc. The graphical three-dimensional graphene/polyurethane flexible conductive film has wide application prospect in the fields of nanometer photoelectric device, super-capacitor, flexible intelligent sensor, wearable equipment, electronic skin and flexible solar cell.

The invention relates to a graphene electrode dielectric elastomer driver. Graphene electrodes are arranged on the two side surfaces of the dielectric elastomer to form a sandwich structure, and a graphene electrode dielectric elastomer thickness displacement driver and a graphene electrode dielectric elastomer plane displacement driver are obtained by deformation in different directions; each graphene electrode comprises a graphene layer and an extraction electrode; the graphene layer is a graphene thin film, a graphene coating layer or a graphene composite material layer; and the graphene electrode dielectric elastomer driver is a graphene electrode single-layer dielectric elastomer driver, a graphene electrode stacked type dielectric elastomer driver, a graphene electrode tubular dielectric elastomer driver or a graphene electrode roll type dielectric elastomer driver. The graphene electrode dielectric elastomer driver can be widely applied to the fields of a robot, aerospace, a mechanical arm, a joint prosthesis, an automobile, artificial muscle, airship tail vane adjustment, a diaphragm pump, intelligent driving, biological medical treatment and the like.

The invention relates to Mxene-PDMS composite foam with a hollow structure, and a preparation method and application of the Mxene-PDMS composite foam. A sensing active part of a sensor is the Mxene-PDMS hollow foam. In the hollow Mxene-PDMS foam, Mxene is dispersed in inner surfaces of the foam holes. According to the invention, the Mxene-PDMS foam with a well-bent hollow structure can be obtainedby optimizing the impregnation times of Mxene nanosheets in a process of preparing the sensor and by optimizing the treatment steps of the usage amount of a PDMS curing agent required in the preparation process and the like. Due to lap joint of a Mxene sheet layer on the inner surfaces of the holes, the Mxene sheet layer is shaken when being subjected to external micro stimulation, and the Mxenesheet layer is more sensitive to detection under micro pressure. According to the design of the hollow structure, stable circulation performance and sensitivity can be achieved when large-angle bending and compression are carried out.

The invention provides an MEMS device and a forming method thereof. The device includes a vibrating membrane forming on a substrate. The vibrating membrane includes a first protrusion and a second protrusion that protrude in opposite directions. The first protrusion protrudes toward the substrate. Among a plurality of protrusions, the protrusions respectively extend in two different directions, thereby avoiding occurrence of internal stress in a corresponding direction due to the corrugation. Therefore, the internal stress in the vibrating membrane can be effectively released when the vibrating membrane is formed, and additional generation of the internal stress can be prevented, so that the formed deformation amount of the vibrating membrane is improved, and the sensitivity of the MEMS device is improved.

The invention discloses a flexible graphene composite material silk screen printing pressure sensor and a preparation method thereof. The flexible graphene composite material silk screen printing pressure sensor comprises a flexible substrate, an electrode and metal interconnection line, a force-sensitive resistive layer and a reference resistive layer. The electrode and metal interconnection line, the force-sensitive resistive layer and the reference resistive layer are printed on the flexible substrate in turn through the mode of silk screen printing. The invention also discloses a preparation method of the flexible graphene composite material silk screen printing pressure sensor. The method is characterized in that the required sensor and the circuit thereof are enabled to be graphical so as to perform large-scale industrial production. The senor is light and flexible and has the advantages of being wearable, attachable and great in tensile deformation performance.

The invention relates to an asphalt pavement structure suitable for the Tibet plateau area and a construction method thereof. The asphalt pavement structure suitable for the Tibet plateau area sequentially comprises a cushion layer, a semi-rigid base layer, a penetrable layer, an SBR emulsified asphalt lower sealing layer, a lower surface layer, a bonding layer and an upper surface layer from bottom to top. The construction method of the asphalt pavement structure suitable for the Tibet plateau area comprises the following steps of (1) tamping and leveling a roadbed, (2) laying the cushion layer on the roadbed, (3) laying a cement stabilized sand gravel layer on the cushion layer, (4) flatly laying a low-shrinkage super-early-strength cement stabilized macadam layer, (5) laying the penetrable layer, (6) laying the SBR emulsified asphalt lower sealing layer, (7) laying the lower surface layer, (8) laying the bonding layer, and (9) laying the upper surface layer.

The invention relates to a nanometer polyvinyl chloride pipe and a preparation method thereof. According to weight ratio, raw materials of the nanometer polyvinyl chloride pipe comprise nanometer polyvinyl chloride resin, calcium carbonate, and PME-100 strengthening and toughening agent, etc. The preparation method is that: first, the raw materials needed are fully mixed in a high level mixing pot and a low level mixing pot; then the materials mixed are transported to an extruder production line to do extruding molding, thereby gaining the nanometer polyvinyl chloride pipe. The invention is characterized in that the invention is not only environment-friendly, but also solves the problems of insufficiency of thermal stability, initial coloring and products reddened and zinc burned, bad weather resistance and copper erosion, etc. During the mixing process of the preparation method, the plasticizing time is shortened, leading to a good plasticizing uniformity and being in favor of the basic extrusion molding process to the modification polyvinyl chloride. The mechanical property of the invention is distinctively higher than the common polyvinyl chloride resin and nanometer blending composite resin. The anti-impact performance and other performances are greatly enhanced The shock strength is two times the common resin products, and in particular the products has good shock strength in low temperature; in addition, the invention has good bending performance, thus being applied to no digging laying and repairing, etc.

Disclosed is a fender garnish structure (1) which includes a garnish main body (11) for covering a flange of a fender. Furthermore, the garnish main body (11) is provided with a plurality of ribs (12) for creating a clearance between the flange and the garnish main body (11), a plurality of fixtures (13, 14) for securing the garnish main body (11) to a vehicle body member being located near the fender, and a plurality of rupture triggering portions for causing a breakage between the ribs (12) and both fixtures (13, 14).

The invention discloses a piezoelectric energy storage device for oil well downhole detection equipment. The upper and lower ends of a cylindrical body are provided with threaded screw threads; the threaded screw threads are connected with a sucker rod string; multiple rows of cantilever beam substrates are arranged on the circumference of the cylindrical body in parallel; piezoelectric ceramic pieces are adhered to the upper and lower sides of the cantilever beam substrates through a conductive adhesive; a mass block is arranged at the tail end of each cantilever beam substrate; the mass block is not in contact with the sucker rod string; a protective cover is also arranged outside the cylindrical body; a circuit board is arranged at the middle part of the cylindrical body; and an unstable current generated by the piezoelectric ceramic pieces passes through a booster circuit, a rectifying circuit and a load matching circuit to obtain a stable direct current for storage so as to be used by a load. The piezoelectric energy storage device for the oil well downhole detection equipment provided by the invention is simple in structure; and energy generated by the vibration shock of a downhole fluid in the oil pumping process can be converted into available electric energy, and the electric energy is stored in a rechargeable battery to be used by the downhole detection equipment.

The invention provides an electronic lock device of a chargeable gun. The electronic lock device of the chargeable gun comprises a shell, an electric control device, a signal switch mechanism, a drive mechanism and a rack, wherein the signal switch mechanism, the drive mechanism and the rack are installed in the shell. The electric control device is connected with the signal switch mechanism and the drive mechanism. The drive mechanism is provided with a transmission gear engaged with the rack. A shaft hole is formed in one side portion of the shell, and a lock shaft is installed in the shaft hole. The lock shaft is connected with one end of the rack. According to the design, the motor transmission mode is converted into the gear and rack motion, and accordingly stretching and retraction of an electronic lock bar are achieved; and meanwhile, when the lock bar moves, the action state signal of an electronic lock is transmitted through correlation with a signal switch. As the motor transmission mode is converted into the mechanical transmission mode, the speed is adjustable, the structure is stable, and the service life is long. In addition, the electronic lock device has the manual unlocking function, and under the situation that the circuit is abnormal, the locking and unlocking functions can be achieved by carrying out manual rotation to make the lock shaft on the rack move back and forth.

The invention relates to an experience type horizontal collision vibration energy collection device for teaching. The horizontal collision vibration energy collecting device comprises a U-shaped base,a piezoelectric cantilever beam, a U-shaped guide rail, a sliding block, a spring and a collision steel ball, one end of the piezoelectric cantilever beam is fixed to the U-shaped base, a mass blockadheres to the free end of the piezoelectric cantilever beam, and the U-shaped base and the U-shaped guide rail are oppositely and fixedly arranged; the collision mechanism-based vibration energy collection device for experience teaching can provide energy for low-power-consumption interaction equipment, is safe and efficient, does not cause environmental pollution, can promote popularization andapplication of the experience teaching equipment, and has a wide application prospect in the field of teaching equipment.

The invention discloses a post-earthquake function recoverable coupling beam with a bending shear sub-control energy consumption mechanism. The post-earthquake function recoverable coupling beam comprises a first elastic coupling beam, a second elastic coupling beam, a connecting bolt and an anchoring part, wherein one end of the first elastic coupling beam and one end of the second elastic coupling beam are connected with an inserting convex block through a connecting inserting groove in an inserting mode and are connected through the connecting bolt, the contact surface of the connecting inserting groove and the inserting convex block is a friction surface, the other end of the first elastic coupling beam and the other end of the second elastic coupling beam are anchored on a wall limb of a shear wall through a shape memory alloy lengthened screw rod and the anchoring part respectively, an n-shaped anti-shearing inserting key is arranged on the wall limb of the shear wall, and the shapes of the other end surface of the first elastic coupling beam and the other end surface of the second elastic coupling beam are n-shaped inserting surfaces matched with the n-shaped anti-shearing inserting key. During an earthquake, the first elastic coupling beam and the second elastic coupling beam shear up and down and move in a staggered mode to drive the friction surface to consume energy, the end parts of the coupling beams rotate with the wall limb, the shape memory alloy lengthened screw rod is driven to generate plastic deformation to participate in energy consumption, and the use function can be quickly recovered after the earthquake.

The invention discloses a bending blank manufacturing method for stainless steel flash welding thin-wall ring profiles. The method comprises the steps that a stainless steel profile fed according to specifications is divided into five segments of mn, no, op, pq and qw, heated to a temperature of 720 DEG C+/-20 DEG C and fed in a bending machine for positioning. The op segment is bent, rotation linear speeds of an upper roller and two lower rollers are 2400 mm/min, the upward moving speeds of the two lower rollers are 10.0 mm/min, the bending is repeated for 3 times, and the op arc segment at this moment achieves a preset curvature radius; and the no segment and the pq segment are bent, the rotation linear speeds of the upper roller and the two lower rollers are 1200 mm/min, the downward moving speeds of the two lower rollers are 12.7 mm/min, the bending is repeated for 3 times, and the no and pq arc segments at this moment achieve preset curvature radii. The profile is bent and deformed into a D-shaped ring blank, two straight sides and an arc portion of the ring blank are connected through a transition arc segment, and phenomena of bent angles at connection positions of the two straight sides and the arc portion and indentations on the surface of the ring blank are eliminated.

The invention relates to the technical field of medical instruments, in particular to a medical instrument cleaning device capable of preventing aerogel infection. The medical instrument cleaning device capable of preventing the aerogel infection comprises a table body, a cover door is arranged on one side of a cover body, a high-pressure water gun is further arranged on the cover body, the cover body is arranged at the top end of the table body, at least two openings are formed in the front side of the cover body, gloves are arranged on the openings, a ventilation pipe is further arranged on a top plate of the cover body and is connected with air draft equipment, and an ultraviolet lamp sterilization device is further arranged in the cover body and is used for irradiating the interior of the cover body. According to the medical instrument cleaning device, the cleaning effect of instrument cleaning is improved, in addition, air in the cover body is sterilized and disinfected, the content of pollutants and germs in pumped air is decreased, and therefore the risk of outdoor pollution and infection is reduced.