41results about How to "Improve the ability to resist external forces" patented technology

The invention discloses a three-cylinder type large-capacity magneto-rheological damper for vibration control of a large civil engineering structure, which comprises a magneto-rheological damping cylinder (9), a puddle damping cylinder (5), an auxiliary cylinder (19), a magneto-rheological main piston (23), a puddle piston (6), a piston rod (17), a sealing baffle (20), a damping channel (16), a cylinder cover (3) and a spherical hinge joint (13), wherein magneto-rheological liquid (11) is filled in the magneto-rheological damping cylinder, and an annular excitation coil (8) capable of generating a magnetic field is arranged in the magneto-rheological damping cylinder; and the puddle damping cylinder is arranged adjacent to the magneto-rheological damping cylinder, and elastic puddle (7) is filled in the inner cavity of the puddle damping cylinder, thus the damper can generate large damping under the condition of large displacement, and the safety of the damper can be improved. By arranging a displacement splitting mechanism (18), the magneto-rheological damper has high rigidity and large damping in a low-frequency region and has low rigidity and small damping in a high-frequency region. Compared with the traditional magneto-rheological damper with the same size, the maximum capacity of the damper of the invention is improved by more than one time, and the vibration control of the large civil engineering structure is more effective.

The invention discloses a reinforcing addition type liquid silicone rubber bonding accelerant and a preparation method and an application thereof. The bonding accelerant is a siloxane compound which contains polyalkenyl, epoxy groups and alkoxyl simultaneously. The preparation method comprises the steps of uniformly agitating a hydroxyl containing polyalkenyl ether compound and an epoxy siloxane compound at room temperature; adding a catalyst; heating to 60-130 DEG C to react for 1-10h; and then, continuously reacting for 1-6h at a reduced pressure. The bonding accelerant provided by the invention is simple and convenient in preparation process, low in cost of materials which are easy to get, green and environment-friendly and suitable for industrialized production. The bonding accelerant prepared by the method provided by the invention can remarkably improve the bonding performance of the liquid silicone rubber, is beneficial for fillers to be filled and dispersed in silicon rubber, improves the mechanical property of the silicon rubber, and has a wide application prospect in the fields of electronic apparatus packaging, semiconductor chip coating and photovoltaic module packaging and the like.

The invention discloses silicone rubber with low modulus and high tear strength. The silicone rubber comprises, by weight, 70-95 parts of methyl vinyl silicone rubber A, 5-30 parts of methyl vinyl silicone rubber B, 15-30 parts of gas-phase white carbon black, 0.5-2 parts of silane coupling agents, 3-7 parts of structural control agents and 0.1-1.5 parts of vulcanizing agents. The invention further provides a method for preparing silicone rubber sealing strips with low modulus and high tear strength. The silicone rubber and the method have the advantage that the silicone rubber is high in tearstrength and elongation and low in elastic modulus.

The invention discloses a multifunctional permeable asphalt mixture and a preparation method thereof. The multifunctional permeable asphalt mixture comprises the following components in parts by mass: 100 parts of mineral aggregate, 4-6 parts of modified asphalt and 0.1-0.5 part of a fiber stabilizer, wherein the mineral aggregate is composed of coarse aggregate, fine aggregate, infiltration materials and mineral powder; the modified asphalt is composed of 100 parts of matrix asphalt, 4-8 parts of SBS, 8-12 parts of waste rubber powder, 0.4-0.9 part of MWCNT (Multi Walled Carbon Nanotubes) and 2-5 parts of a tackifier; and the fiber stabilizer is one of lignin fibers, mineral fibers or polyester fibers. According to the multifunctional permeable asphalt mixture provided by the invention, the mineral aggregate contains the infiltration materials, and the infiltration materials refer to low-cost and readily-available materials such as volcanic, activated carbon, ceramsite, zeolite or crab shell-clam shell powder and the like, so that rainfall runoff pollution can be effectively controlled, the aims of fully utilizing rainwater resources and supplementing groundwater resources are achieved, and the preparation cost can be effectively reduced. The used modified asphalt is compounded by the MWCNT and SBS, so that the shear deformation resistance of the asphalt can be obviously improved.

The invention discloses a tensile high-speed data cable, which comprises eight copper conductor pairs, a second insulating layer, a polyester tape layer, a second aluminum composite layer and a braided shielding layer, wherein the second insulating layer coats two copper conductor pairs of the eight copper conductor pairs; the other six copper conductor pairs in the eight copper conductor pairs are adhered to the second insulating layer; the polyester tape layer is coated on the other six copper conductor pairs in the eight copper conductor pairs; the second aluminum composite layer is coated on the polyester tape layer and consists of a polyester film layer and an aluminum film layer which is coated on the surface of the polyester film layer; the braided shielding layer is coated on an aluminum foil layer and comprises a plurality of strands of aramid fibers of which the sections are circular; a flat copper wire of which the section is rectangular and which is coated with a tin layer is lapped on the aramid fibers; and the braided shielding layer is braided by the plurality of strands of aramid fibers. By the high-speed data cable, the tensile fatigue resistance is improved, and the shielding performance of the cable is improved.

The invention discloses a highway bridge construction fence. The highway bridge construction fence comprises a construction fence body, and a socket device is arranged on the right side face of the construction fence body; the weight of a bearing device is increased through cooperation of a releasing device and a reinforcing device, the gravity center of the construction fence shifts downwards, and the stability is increased; the length of a force arm between the bearing device and the ground is increased through the reinforcing device, then the external force resistance of construction fence is improved, and the stability is better; through the cooperation of the socket device, a lower locking device, an upper locking device and a control device, the construction fence which are directly stressed can be automatically separated from the adjacent construction fences, it is ensured that the adjacent construction fences cannot be brought down by the construction fences which are directly stressed, and the subsequent maintenance work is simplified; and the external force borne by the construction fence is buffered and absorbed through the bearing device, the deformation difficulty of the construction fence under the external force is increased, and the service life of the construction fence is prolonged.

The invention discloses a packaging structure of heavy current field effect transistors. A conductive base capable of realizing electrical conduction and heat radiation is employed, a bottom surface of a circuit board is fixed on the conductive base, a bottom portion of an electrode connection seat is in conductive connection with a front side of the circuit board, G / S electrode pins of the field effect transistors face towards the electrode connection seat and are welded with the circuit board, and D-electrode pins of the field effect transistors face outside and are in conductive connection with the conductive base so as to realize parallel arrangement of all the field effect transistors. The packaging structure is advantaged in that properties of compact structure, small volume, reliable connection and low cost are realized, the D-electrode pins of all the field effect transistors are conductively welded on the conductive base so as to realize excellent heat radiation, after all the field effect transistors are connected in parallel, output currents are gathered and outputted through the electrode connection seat, and the packaging structure can effectively adapt to heavy-current and large-power work environments.

The invention discloses a nano multi-layer composite solid lubricating film layer with a long service life under space irradiation and preparation thereof. The nano multi-layer composite solid lubricating film layer composed of a Ti binding layer, a TiN bearing layer and an AgTiNi / MoS2Ti nano multi-layer lubricating functional layer is deposited on a titanium alloy substrate, an aluminum alloy substrate, a stainless steel substrate, a bearing steel substrate and the like by adopting a closed magnetic field unbalanced magnetron sputtering technology. The nano multi-layer composite film layer can reliably serve for a long time in strong space irradiation environments such as low-orbit high atomic oxygen density, medium-high-orbit high electron proton density and high ultraviolet irradiation dose, and is high in bearing capacity and low in friction coefficient, thus, the service life of a moving part of a spacecraft exposed in the space irradiation environments can be greatly prolonged, and the reliability of the moving part is improved. In addition, the preparation method has the characteristics that the process is environment-friendly and flexible, the film thickness is uniform, the compactness is good, the preparation process of the film layer is controlled in a programmed manner, the modulation period of the film layer is easy to regulate and control, and batch treatment can be realized, industrial production is easy to realize, and the good application prospect is achieved.

The present invention discloses a front panel mounting structure of indoor machine of air conditioner. It includes front frame and front panel. The front panel is mounted on the front surface of said front frame, on the lower portion of front panel an observation window is formed, the back surface of said front panel is equipped with reinforcing components. The described observation window has good transparency, and the picture displayed on the display screen can be observed by user via the observation window, the described reinforcing components are respectively placed on two sides of said observation window.

The invention relates to the technical field of security doors, in particular to an explosion door assembly. The explosion door assembly comprises a door frame and a door. The door comprises a door body and a door lock mechanism. The door body is installed in the door frame. A lock groove is formed in the door frame. The door lock mechanism is installed on the door body. The door lock mechanism further comprises a locking mechanism, a linking mechanism and a closing mechanism. The locking mechanism is connected with and controls the closing mechanism through the linking mechanism. The lockingmechanism comprises a locking piece at least connected with the linking mechanism. The locking piece comprises a connecting section connected with the linking mechanism, a guide connecting rod sectionand a closing section going deep into the lock groove. The explosion door assembly has a good antitheft function and also has an excellent anti-explosion effect, and through the cooperation of the various mechanisms of the explosion door assembly, the explosion door assembly can have a remote electric control function and can also have a manual double locking function and meanwhile has the capacity of resisting the strong external force action.

The invention provides a pear seedling cultivation groove with adjustable space size. The pear seedling cultivation groove comprises a groove body, a vertical beam, a cross beam, a water supply pipe,universal wheels, a water diversion disc and a vertical shaft, wherein the groove body comprises a left half groove and a right half groove; the left half groove also comprises a left side plate and aleft outer edge; the left side plate is integrally machined at two sides of the left half groove; the left outer edge is integrally machined at the right side of the left half groove; and the right half groove also comprises a right side plate, a guide rod, a right outer edge and a water seepage hole. According to the invention, the growth expansion force of a gradually developed root system is greater than a spring force, so the left half groove and the right half groove at two side positions expand towards two side positions; the internal volume of the cultivation groove can be increased; the problem that growth and development of seedlings are seriously restricted due to the fact that the size of the cultivation groove is not changed in the growth process of pear seedlings is avoided;the function of changing the density of the pear seedlings is achieved; the row spacing of the seedlings can be conveniently increased when the seedlings gradually grow; and the problems that the growth and development of the seedlings are seriously restricted due to the fact that the seedlings influence one another and compete for illumination, air and the like are solved.

The invention discloses a construction method for installation and positioning of an embedded rubber water-stop belt. A rubber water-stop belt lower combination mould plate and a rubber water-stop belt upper combination mould plate are used, the rubber water-stop belt lower combination mould plate is in butt joint with the lower part of a main keel for preliminary tightening and fixing, the embedded rubber water-stop belt is placed on the rubber water-stop belt lower combination mould plate , a middle hollow circular ring of the embedded rubber water-stop belt is placed flat in a lower seat groove of the water-stop belt, and the rubber water-stop belt upper combination mould plate is in butt joint with the upper part of the main keel for preliminary tightening; and meanwhile an upper seatgroove of the water-stop belt is closed on the middle hollow circular ring of the embedded rubber water-stop belt in a covered mode, the mould plates are then overall reinforced, a pouring mould is erected outside a reinforcement cage, and concrete is poured. According to the construction method for installation and positioning of the embedded rubber water-stop belt, the position of the embedded rubber water-stop belt is fixed through combination of joint sealing materials of a deformation joint and traditional mould plates, the fact that the middle hollow circular ring of the embedded rubberwater-stop belt coincides with the center line of the deformation joint can be ensured all the time.

The invention relates to the field of concrete, and particularly discloses a recycled concrete with high compressive strength and a preparation method thereof. The recycled concrete with high compressive strength is prepared from the following raw materials in parts by weight: 90-110 parts of cement; 120-150 parts of recycled aggregate subjected to silicon carbide strengthening treatment; 100-130parts of natural fine aggregate; 0.3-1.2 part of a polypropylene fiber; 8-12 parts of fly ash; 1.5-2.2 parts of a water reducing agent; and 45-55 parts of water; the preparation method comprises the following steps: mixing and stirring the silicon carbide reinforced recycled aggregate, the natural fine aggregate, the polypropylene fiber and fly ash together, adding cement, mixing and stirring, adding the water reducing agent and water, and mixing and stirring to obtain the recycled concrete with high compressive strength. The recycled concrete with high compressive strength has the advantagesof saving gravel resources and being high in compressive strength.

The invention relates to the technical field of engineering equipment, in particular to hole drilling and slot expanding equipment. The hole drilling and slot expanding equipment comprises a drilling machine, a supporting frame, a connecting rod, a drill rod and a drill bit; a sliding rail is arranged on the supporting frame; the drilling machine is connected with the supporting frame through the sliding rail; the drilling machine can move vertically through the guide of the sliding rail; the drill rod is connected with the drilling machine through the connecting rod; the drill bit is arranged at the lower end of the drill rod; a universal joint is arranged between the drill rod and the connecting rod; a guide device is also arranged on the drill rod. According to the hole drilling and slot expanding equipment, slotting treatment is performed in a flat and straight hole, and the capacity to resist external force of a filling rubber fixed rod piece is enhanced.

The invention discloses a tensile anti-fatigue high-speed data cable which comprises eight copper conductor pairs; two of eight copper conductor pairs are coated by a second insulating layer; the other six of eight copper conductor pairs are covered on the second insulating layer; the other six of eight copper conductor pairs are coated by a polyester tape layer; the polyester tape layer is coated by a second aluminum plastic composite layer; the second aluminum plastic composite layer comprises a polyester thin film layer and an aluminum thin film layer which coats on the surface of the polyester thin film layer; an aluminum foil layer is coated by a woven shielding layer; the woven shielding layer comprises a plurality of aromatic nylon fibers with a circular section and a plurality of tinning copper wires; the aromatic nylon fibers are coated by a tinning flat copper wire with a rectangular section; and the woven shielding layer comprises a plurality of aromatic nylon fibers and a plurality of tinning copper wires which are crossed and woven. The high-speed data cable provided by the invention enhances tensile anti-fatigue performance and also enhances the shielding performanceof the cable at the same time of ensuring the resistance of the shielding layer.

The invention discloses a high-electrical-performance halogen-free flame-retardant reinforcement nylon composite material. The material is prepared from, by weight, 40-60 parts of nylon resin, 25-35 parts of glass fibers, 4-10 parts of phosphorus-based flame retardant, 6-10 parts of polytetrafluoroethylene, 1-5 parts of nucleating agent, 2-5 parts of flexibilizer, 0.5-2 parts of flowing agent and0.5-5 parts of color masterbatch. High-viscosity nylon is matched with the nucleating agent, the flowing agent, polytetrafluoroethylene and the organic wrapping-type micro-adhesive red phosphorus flame retardant for use, the obtained material has excellent strength, rigidity, wear resistance, water resistance, heat stability and flame retardance, the forming efficiency is high, the surface finishdegree is high, and the defects such as color change or fiber emergence cannot be caused.

The invention relates to the technical field of sports equipment, in particular to an obstacle climbing balance plate. The obstacle climbing balance plate comprises: a main body; a butt joint part isarranged at the end part of the main body; the main body comprises one or more unit pieces; and when the number of the unit pieces is more than one, the unit pieces are connected through the connecting structures. In the prior art, the structure of a barrier climbing device is relatively fixed, so that the barrier climbing device is inconvenient to transport and relatively single in function. Compared with the prior art, the obstacle climbing balance plate has the advantages that the main body comprises one or more unit pieces, and the unit pieces can be detached and transported in the transportation process, so that the limited transportation space is greatly utilized. Meanwhile, the number of the unit pieces can be selected according to actual requirements so as to meet different functional requirements.

The invention discloses cracking-resistant polyurethane synthetic leather which comprises base cloth, a polyurethane bonding layer and a polyurethane surface layer. The base cloth is warp knitting fabric. The warp knitting fabric is formed by weaving lining warp, lining weft, oblique lining yarn and stitching threads, wherein the stitching threads are woven into a warp woven structure. In the weaving process of the stitching threads, the lining warp is lined into the fabric in the warp-direction in parallel, the lining weft is lined into the fabric in the weft-direction in parallel, the oblique lining yarn is lined into the fabric in the oblique direction in parallel, the stitching threads are woven into circles, and the lining warp, the lining weft and the oblique lining yarn are bound; the base cloth is treated with a mixed solution forming by a polyurethane solution and a silane coupling agent; and preparation raw materials of the polyurethane surface layer comprise, by mass, 100 parts of polyurethane resin, 45-65 parts of DMF, 10-20 parts of filler, 2-5 parts of heat-resisting stabilizer, 1-2 parts of defoamer, 1-3 parts of flatting agent, and 0-3 parts of surface active agent.The synthetic leather is high in strength and is not prone to cracking when being punched or cut, and the structure retentivity is good.

The invention relates to the technical field of anti-theft doors, in particular to a novel anti-theft door. The novel anti-theft door includes a door frame and a door, wherein the door includes a doorbody and a door lock mechanism, the door body is installed in the door frame, the door frame is provided with a lock groove, the door lock mechanism is installed on the door body, the door lock mechanism further includes a locking mechanism, a linkage mechanism and a lock closure mechanism, the locking mechanism is connected with the lock closure mechanism and controls the lock closure mechanismthrough the linkage mechanism, and the lock closure mechanism includes at least a lock closure piece connected with the linkage mechanism. The operation of the locking mechanism can drive the linkagemechanism to enable the lock closure piece to clamp into the lock groove in the door frame. The novel anti-theft door has a high-quality blast-resistant function, and further has a good anti-theft function. The anti-theft door lock is arranged in the anti-theft door, remote control can be realized, the anti-theft function can be realized, and therefore, the anti-theft ability is far better than ageneral anti-theft door.

The invention discloses a construction method for installation and positioning of an embedded rubber water-stop belt. A rubber water-stop belt lower combination mould plate and a rubber water-stop belt upper combination mould plate are used, the rubber water-stop belt lower combination mould plate is in butt joint with the lower part of a main keel for preliminary tightening and fixing, the embedded rubber water-stop belt is placed on the rubber water-stop belt lower combination mould plate , a middle hollow circular ring of the embedded rubber water-stop belt is placed flat in a lower seat groove of the water-stop belt, and the rubber water-stop belt upper combination mould plate is in butt joint with the upper part of the main keel for preliminary tightening; and meanwhile an upper seatgroove of the water-stop belt is closed on the middle hollow circular ring of the embedded rubber water-stop belt in a covered mode, the mould plates are then overall reinforced, a pouring mould is erected outside a reinforcement cage, and concrete is poured. According to the construction method for installation and positioning of the embedded rubber water-stop belt, the position of the embedded rubber water-stop belt is fixed through combination of joint sealing materials of a deformation joint and traditional mould plates, the fact that the middle hollow circular ring of the embedded rubberwater-stop belt coincides with the center line of the deformation joint can be ensured all the time.

The invention relates to a lateral-outlet photoelectric sending-receiving-function integrated SiP encapsulating structure and a process method thereof. The structure comprises a substrate (1), wherein an optical sender (2) and an optical receiver (3) are laminated to the substrate (1), metal shells (4) are arranged outside the optical sender (2) and the optical receiver (3) and comprise square shells (4.1), round pies (4.2) are arranged outside the square shells (4.1), and second lens (5) are arranged in the round pies (4.2); and a chip (6) and passive devices (7) are laminated to the substrate (1) outside the metal shells (4), and the metal shells (4), the chip (6) and the passive devices (7) are encapsulated with plastic materials (6). According to the structure, a sending module and a receiving module are integrated into an SIP encapsulating structure by virtue of metal shell parts, so that the multifarious process of existing products is reduced, the production efficiency is improved, and meanwhile, the external force resistance and impermeability of a product are improved.

The invention relates to the technical field of variable-rigidity adjusting devices, in particular to a variable-rigidity continuum adjusting device. The variable-rigidity continuum adjusting device comprises a worm gear mechanism, a driving mechanism and two driving ropes. The worm gear mechanism comprises a worm and two turbines; the driving mechanism is connected with the worm; the worm is arranged between the two turbines; and the two turbines are in meshing connection with the worm. The ends of the two driving ropes are in winding connection with the power output ends of the two turbinescorrespondingly; and one driving rope is provided with an elastic component. By means of the variable-rigidity continuum adjusting device, the ability of a continuum actuator against external force can be improved; the effect of adjusting the rigidity is achieved; the flexibility of the continuum actuator is further improved; and the usability of the continuum actuator is improved.

The invention relates to a multi-stable variable-stiffness robot structure comprising unit bodies and a stiffness adjusting mechanism. The outer contour of each unit body is in a convex polygonal shape, the multiple unit bodies are arranged side by side to form a chain type unit body, and the chain type unit body is provided with a stiffness adjustment mechanism; the multi-stable variable-stiffness robot structure has the function of stiffness abrupt changes (more than 100 times of stiffness changes can be achieved within a short time); the structure for achieving the stiffness abrupt changesis simple and exquisite, and only a rope is used for driving; and the multi-stable variable-stiffness robot structure is in modular design, all module structures are simple, the connection method is clear, the production cost is low, and the strong practicability is achieved.