79results about How to "Carrying capacity" patented technology

The invention discloses a high temperature resistant radar wave absorption material based on double-layer metamaterials. The high temperature resistant radar wave absorption material comprises, from inside to outside, an inner dielectric layer, an inner layer resistance type high temperature metamaterial layer, an intermediate dielectric layer material layer, an outer layer resistance type high temperature metamaterial layer, and an outer layer dielectric layer sequentially. The resistance type high temperature metamaterial layer comprises conductive phase substances and glass base materials. The inner dielectric layer, the intermediate dielectric layer material layer, and the outer layer dielectric layer adopt continuous oxide fiber reinforcement oxide composite materials. In order to satisfy the electric performance design requirement of the resistance type high temperature metamaterials, the mass ratios of the conductive phase substances and the glass base materials of the resistance type high temperature metamaterials are in a range from 30:70 to 70:30. The high temperature resistant radar wave absorption material is advantageous in that strong designability is provided, and a structure is simple; by adopting a double metamaterial technology, broadband wave absorption performance is realized.

The invention discloses a novel assembled joint applicable to a monolayer triangular space grid structure. The novel assembled joint is mainly composed of five parts, namely a center joint, connecting sleeves, high-strength bolts, upper and lower cover plates and a center bolt. The center joint is composed of a center circular ring and six connecting arms in connection. The connecting sleeves are machined from steel tubes. Bolt holes are arranged in corresponding positions of the center joint, the sleeves and road pieces. During assembly, one end of each sleeve is sleeved with one connecting arm while the other end of the same is sleeved with one rectangular steel tube, the sleeves, the connecting arms and the rectangular steel tubes are connected through the high-strength bolts, bending moment and axial force of the rod pieces are transmitted through the bolts and friction and mechanical squeezing among the steel tubes, the sleeves, the connecting arms and the center ring, and the triangular space grid structure joint is formed by all the connections. The assembled joint is wide in application range, convenient for industrialized batch production, good in assembling capacity, convenient to construct, high in construction and assembly quality, capable of meeting the requirement of the monolayer space grid structure on joint bearing capacity and rigidity and broad in application prospect.

The invention discloses an anti-buckling low-frequency vibration isolation rubber support comprising a rubber support body and anti-seismic casing pipes arranged in the rubber support body. Laminatedrubber is adopted for the rubber support body. The low rigidity required by low-frequency vibration isolation is achieved by increasing the thickness of the rubber. The anti-seismic casing pipes are embedded in the support in the vertical direction and sequentially penetrate through the rubber support body from top to bottom, a restraining effect is achieved for the high-flexibility rubber supportbody in the horizontal direction, an anti-buckling function is provided for the rubber support body under the vertical large-load effect, and a horizontal earthquake resistance function is also provided for the support. Rubber layers or isolation gaps are arranged between the anti-seismic casing pipes and the rubber support body or between the anti-seismic casing pipes to avoid rigid contact, andthe environment vibration spreading route achieved through a rigid contact face is isolated. By means of the anti-buckling low-frequency vibration isolation rubber support, low-frequency vibration isolation of environment vibration can be achieved, high bearing stability and anti-seismic capacity can also be ensured, and the anti-buckling low-frequency vibration isolation rubber support can be used for vibration isolation of civil engineering structures and all types of instruments and equipment.

The invention provides a photovoltaic support and a photovoltaic cell panel cleaning machine test stand. The photovoltaic support comprises a platform lifting mechanism and a dip angle adjustment mechanism, wherein the platform lifting mechanism comprises a lifting platform at an upper part, a base platform at a lower part, a first linear driving mechanism and a guide mechanism, a movable end and a fixed end of the first linear driving mechanism are respectively connected with the lifting platform and the base platform, the guide mechanism comprises a vertical post and a guide assembly, the guide assembly is used for guiding the lifting motion of the vertical post, the vertical post and the guide assembly are respectively arranged on the lifting platform and the base platform, the dip angle adjustment mechanism comprises a framework and a second linear driving mechanism, a lower end of the framework is connected with the lifting platform in a pivoting way, and a movable end and a fixed end of the second linear driving mechanism are respectively connected with a middle upper part of the framework and the lifting platform. By the photovoltaic support, the height and the dip angle of a photovoltaic cell panel can be adjusted.

The invention discloses an equestrian sport field, comprising a surface layer for paving fiber sand, a separation layer for preventing the fiber sand at an upper layer from sinking and a discharging layer located at the bottom, wherein the discharging layer comprises a single grain size broken stone layer and a graded broken stone layer; the single grain size broken stone layer is located above the graded broken stone layer; a discharging pipeline is arranged below the graded broken stone layer; the separation layer comprises an asphalt layer paved above the single grain size broken stone layer; a broken stone layer is filled on the surface of the asphalt layer; and the fiber sand is paved above broken stone on the surface of the asphalt layer. With the adoption of the technical scheme provided by the invention, the surface layer and the asphalt layer can be used for protecting and bearing horseshoes well; and each layer structure can be used for rapidly dewatering, so that the requirements of the equestrianism competition can be met. Furthermore, the materials used in the equestrian sport field provided by the invention are common and easy to obtain; and the manufacturing cost can be reduced. The invention further discloses a construction process of the equestrian sport field.

The invention discloses an actuator having a planetary roller screw. The actuator is particularly intended for operating vehicle clutch and has a planetary roller screw (PWG). According to the invention, a plurality of planetary rollers engages a screw and engages a gear ring which encircles the planetary rollers. The planetary rollers are located at two end parts thereof on a planetary roller rack and are supported in a sleeve which encircles the gear ring in an anti-rotation manner. According to the invention, the gear ring is at least upported by one gear ring bearing. The gear ring bearing absorbs axial force in the direction of an operation stroke and the opposite directiont of the operation stroke.

The invention relates to a damping and vibration reduction mechanism for deploying an antenna. In the damping and vibration reduction mechanism, the front end of the torsional damping rod is installed on the upper side of the front end of the antenna support cylinder through a universal joint, and the rear end is connected to the side wall structure of the spacecraft through a ball joint. ; The rigid support seat and the torsional damping rod are located at relative positions on the same cross-section of the antenna support tube, one end is fixedly connected to the bottom of the front end of the antenna support tube, and the other end is connected to the mounting structure at the bottom of the spacecraft through a ball joint; two curved damping rods are installed symmetrically At the bottom of the rear end of the antenna support cylinder, one end is connected to the antenna support cylinder through a universal joint, and the other end is connected to the bottom mounting structure of the spacecraft through a ball joint. The damping and vibration reduction mechanism controls the torsional and bending mode vibrations of the unfolded antenna separately through the torsional damping rod and the bending damping rod, which is convenient for adjusting the damping characteristics of each order mode of the unfolded antenna. The control method is simple and the vibration suppression effect is good; The locking and releasing device has the functions of launch bearing and on-orbit damping and vibration reduction.

The invention provides a tear-resistant packing material structure manufacture method and a tear-resistant product. The tear-resistant packing material structure manufacture method comprises a first material preparing step, wherein the first material preparing step comprises a warp and weft direction fiber bundle weaving step and a first press fit step; a second material preparing step, wherein the second material preparing step comprises a second press fit step and a first coating step; a third press fit step; a second coating step; a fourth press fit step; a third coating step and a drying step; and therefore, the tear-resistant packing material structure which is provided with a heat-sealing layer, a transition layer, a film-similar tear-resistant layer, a junction layer and a paper layer in sequence from bottom to top. The tear-resistant packing material structure manufacture method can be realized by automated mechanical equipment, so that the production efficiency can be improved, and the manpower cost is lowered. The tear-resistant packing material structure provided by the invention has printability and deflection owned by the paper layer and also has the effects of bearing capacity, high strength, high toughness and the like of the tear-resistant layer.

The invention discloses a construction method of an aerological overhanging template supporting frame body. The aerological overhanging template supporting frame body comprises an overhanging steel supporting platform and a template supporting frame, the overhanging steel supporting platform comprises a plurality of upper part overhanging steel girders, steel wire rope suspension devices are arranged on the upper parts of the upper part overhanging steel girders, and oblique supporting devices are arranged on the lower parts of the upper part overhanging steel girders. The construction methodof the aerological overhanging template supporting frame body comprises the steps that 1, the overhanging steel supporting platform is set up; 2, load test of the overhanging steel supporting platformis carried out; 3, a lower part frame body of the overhanging steel supporting platform is sealed; 4, a template supporting frame is set up; and 5, the template supporting frame is sealed. The construction is convenient and fast, the safety is good, the stability of the overhanging steel supporting platform can be effectively improved, the overhanging steel supporting platform is prevented from deforming, so that the template supporting frame on the upper part of the overhanging steel supporting platform is prevented from overturning, meanwhile, the load test is carried out on the overhangingsteel supporting platform, it is ensured that the overhanging steel supporting platform has enough bearing capacity, and the safe operation of the construction is ensured.

The invention discloses a leakage self-reminding ring at natural gas pipeline connectors, and belongs to the field of natural gas leakage prevention. The leakage self-reminding ring at the natural gaspipeline connectors comprises a ring body connected to the two natural gas pipeline connectors, wherein through the arrangement for the ring body, when natural gas leakage occurs, on one hand, a gasseal ring is expanded under the extrusion of natural gas, so that the contact area of the gas seal ring and the surface of the natural gas pipeline is increased, a better sealing effect is achieved, and then more obvious phenomenon occurring outside the ring body is effectively ensured, and a better reminding effect on a user is achieved; and on the other hand, a pneumatic diaphragm is deformed outwards, and then self-connecting net rods are driven to protrude out of a limiting plate in sequence from the middle part to the edge; and a plurality of adjacent hollow top balls and flexible adsorption bars are mutually connected in an adsorption manner to form a net surface structure, so that the self-reminding phenomenon is further enhanced, the probability that the user finds natural gas leakage in time is effectively increased, maintenance is facilitated, and potential safety hazards are reduced.

The invention discloses a wave-absorbing honeycomb with pyramid-like structures and a preparation method of the wave-absorbing honeycomb, and belongs to the technical field of microwave absorbing materials. Each pyramid-like wave-absorbing structure is formed by stacking and bonding a plurality of wave-absorbing honeycomb sheets with different sizes and electromagnetic characteristics from large to small in sequence from bottom to top, and the middle area of each pyramid-like wave-absorbing structure is filled with a non-wave-absorbing honeycomb sheet. And the pyramid-like wave-absorbing structures and the non-wave-absorbing honeycomb sheets form a flat-plate-shaped integral appearance together. The wave-absorbing honeycombs have excellent wave-absorbing performance and certain structuralbearing capacity. The preparation method is stable and easy to control, and the wave-absorbing honeycombs with excellent wave-absorbing performance can be prepared.

The invention discloses a prefabricated assembly type reinforced-frame template for a post-cast belt of a raft plate foundation and a construction method thereof. The prefabricated assembly type reinforced-frame template comprises a plurality of cuboid reinforced frame template units with fixed connection of heads and tails, wherein each reinforced frame template unit comprises an upper frame, a lower frame and water-stopping steel plates arranged between the upper frame and the lower frame; the two water-stopping steel plates are respectively welded between the long-edge side surfaces of theupper frames and the long-edge side surfaces of the lower frames; the two long-edge side surfaces of the upper frames and the long-edge side surfaces of the lower frames are respectively provided witha net-shaped template surface layer; comb dies are respectively fixed on the top parts of the two long-edge side surfaces of the upper frames. The prefabricated assembly type reinforced-frame template for the post-cast belt of the raft plate foundation and the construction method disclosed by the invention have the beneficial effects that the construction process of the template of the post-castbelt for carrying out site welding, binding, installation and blocking after reinforcing bars at the position of the post-cast belt of raft plates are completely bound is changed, so that the startingtime of the following produces is advanced, the construction progress is accelerated, and the construction period is shortened; simultaneously, the narrow construction space among the reinforcing bars of the raft plates is changed, the construction condition is improved and the construction quality is ensured.

The invention discloses a green and environment-friendly intelligent logistics unmanned distribution method, which comprises the following steps: S100, a user submits an order at a client according to a logistics demand, and a management platform allocates a corresponding initial delivery point to the user according to the order; S200, an unmanned vehicle picks up all the delivery unit cabinets one by one according to the optimal path planning result and then transports the delivery unit cabinets to a logistics center; s300, the unit cabinets are decomposed into packaging boxes in the logistics center, then the packaging boxes are sorted and transported to the logistics center of the destination, new distribution unit cabinets are recombined according to the distribution points, and the new distribution unit cabinets are transported to the target distribution points through the unmanned vehicle; and S400, if the unit cabinets are successfully put, the user can continuously store and take the articles. According to the invention, intelligent logistics modes such as real-time information, path optimization, unmanned vehicle distribution and the like can be adopted for peripheral logistics, so that the labor cost can be effectively saved, the logistics operation efficiency is improved, and the green transformation of express packaging is promoted.

The invention discloses a storage box with adjustable storage space. The storage box is characterized by comprising a box body and a box cover which is arranged on the side surface of the box body, wherein more than one flexible partition which is in parallel to the bottom of the box body and makes no contact with the inner wall of the box body is arranged in the box body, a shaft which penetrates through the flexible partition is arranged in the box body in the vertical direction, and an anti-slip ring which is fixed to the flexible partition is arranged between the flexible partition and the shaft. Friction force between the anti-slip ring, which is fixed to the flexible partition, and the shaft is adopted to position the flexible partition in the box body in the vertical direction, so as to ensure that the flexible partition has certain bearing force, and when the space in the box needs to be adjusted, the flexible partition can slide along the shaft, the space distribution in the box body can be flexibly adjusted when the space of the box body is constant, and thus the storage box is suitable for storing different articles.

The invention discloses incohesive soil freezing sample preparation equipment which includes a sample preparation chamber assembly, a temperature control chamber assembly, an axial transmission assembly, a low temperature circulating bath and signal acquisition monitoring assembly and a vacuum pumping assembly. The sample preparation chamber assembly is internally provided with a sample preparation chamber and used for holding samples and filtering water on the samples, the temperature control chamber assembly is used for low temperature freezing the samples, the sample preparation chamber assembly is located inside the temperature control chamber assembly, the axial transmission assembly is used for pushing out the samples after a test finished, the low temperature circulating bath and signal acquisition monitoring assembly is used for collecting test and monitoring data, and the vacuum pumping assembly is used for vacuumizing inside the temperature control chamber assembly. The sample preparation equipment can be used for directly preparing saturated remolded samples of gravel, gravel soil, sand soil, silty soil and other incohesive soils, the sample preparation process is simpleand easy, operability of the whole equipment is high, the efficiency of sample preparation is improved, and the time is saved.

The invention discloses a bearing and vibration isolation integrated plate shell superstructure and a design method thereof, and belongs to the technical field of plate shell vibration isolation. Thestructure comprises a plate shell and a plurality of microstructure components, the microstructure component is of a uniform-section block structure, the section contour line of the microstructure component is composed of a bottom edge and two arcsine-like function curves, and the intersection point of the two arcsine-like function curves forms a beak tip. The bottom surface of the microstructurecomponent is connected with the plate shell; and the plurality of microstructure components are periodically arranged to form an array to separate the vibration source from the protected object. Whenelastic waves excited by the vibration source are propagated to the periphery of the array from any direction along the plate shell, the microstructure component generates bending and torsional vibration under the influence of the elastic waves, and the microstructure can generate force and moment effects on the plate shell, so that propagation of the elastic waves in the plate shell is inhibited,and isolation of incident elastic waves in any direction at a high frequency band in the plate shell is realized. The structure is simple, machining is convenient, a protected object and a vibrationsource can be isolated at the same time, and the good bearing and vibration isolation capacity is achieved.

The invention discloses a zipper carton capable of being internally sealed twice, and belongs to the field of zipper cartons. The zipper carton capable of being internally sealed twice comprises a carton body. An indentation strip seal is connected to an upper paper board at the upper end of the carton body. Due to the arrangement of a glue bead chain, when secondary use is needed after the indentation strip seal is torn off, an outer pull rope or a bead connecting rope is pulled outwards firstly, glue sealing beads move to the positions below a glue penetration board, and are partially broken under the action of extrusion force, glue flows outwards and gathers on a glue absorbing adhesive layer, at the moment, the upper paper board is pressed downwards, the upper paper board is bonded with an inner secondary strip seal, and the carton is sealed again. Compared with the prior art, the seal at a joint is located inside, so that higher attractiveness is achieved; no adhesive tape is needed, so that the difficulty of recycling is lower; and in the process of second sealing, in cooperation with a lining bundle, it is effectively guaranteed that when the glue bead chain is pulled, the glue sealing beads are broken in time, glue in the glue sealing beads rapidly flows out, and the bonding efficiency is higher.

A bridge multi-directional anti-seismic force-measuring limiting device comprises an upper limiting unit and a lower limiting unit which are mounted oppositely. The lower limiting unit is arranged transversely. An opening of a U-shaped frame faces downwards. The end surfaces of two fork arms of the frame are connected with a pier table of a bridge through pre-embedded plates and shear bars. The upper limiting unit is arranged longitudinally. An opening of a U-shaped frame faces upwards. The end surfaces of the two fork arms of the frame are connected with a beam body of the bridge through pre-embedded plates and shear bars. The contact surface of transverse arms of the U-shaped frames of the upper limiting unit and the lower limiting unit is provided with a friction pair. The inner sides of the fork arms are provided with opposite pressure sensors. The pressure sensors are connected with the fork arms of the frame through adjusting assemblies and connected with an exterior detecting instrument through cable signal wires. The outer sides of the pressure sensors are connected with buffering energy-consuming parts correspondingly. The limiting device can prevent beam from falling andcollision damage under action of an expected earthquake, a supporting seat between pier beams is protected from ultralimit displacement damage, long-time real-time online safety detection can be conducted, scientific data are provided for analysis, evaluation and maintenance of the bridge, and the safety of the bridge is ensured.

The invention discloses a process bearing block for a flapping test of a steam turbine rotor shaft, which comprises a base plate, two side frame plates of which the bottom ends are fixed on the base plate, and a base of a front baffle plate and a rear baffle plate which is positioned in the middle and of which the two ends are fixed on the two side frame plates respectively. The process bearing block further comprises an adjusting mechanism flapping up and down, an adjusting mechanism flapping horizontally, a flexibility self-adjusting mechanism and a bearing bush, wherein the adjusting mechanism flapping up and down comprises two hydraulic jacks and two locking nuts; the adjusting mechanism flapping horizontally comprises a sliding seat and a spherical seat; the flexibility self-adjusting mechanism is a spherical bearing; and the bearing bush is placed on the spherical bearing. Through the technical scheme of the process bearing block for the flapping test of the steam turbine rotor shaft, the process bearing block has the advantages of compact structure, high bearing capacity, portable operation, good bearing bush interchangeability, easy manufacture, economization and practicability.

The invention discloses a method for preventing a long empty pile part of a prestressed pipe pile from falling, comprising the following specific steps that: step 1, a technical person in charge of aproject makes a special anti-falling construction scheme of the long empty pile part of the prestressed pipe pile and makes a targeted emergency plan, and technical disclosure work is carried out fora construction responsible person and a construction team leader before construction; step 2, the technical person in charge of the project calibrates construction data and checks a long empty pile ofthe prestressed pipe pile and other building material components transported to a construction site; and step 3, site pretreatment is conducted after lofting of the construction site, a small road roller is used for rolling compaction, the pile position is accurately positioned, and a record is made. The method for preventing the long empty pile part of the prestressed pipe pile from falling is remarkable in anti-falling effect, the construction method is simple, the overall strength is high, the stability is good and the method is suitable for being widely popularized and used, and the construction period is shortened.

The invention discloses a high-precision biopsy puncture device for the nephrology department and a use method of the high-precision biopsy puncture device, and belongs to the field of kidney puncture. According to the high-precision biopsy puncture device for the nephrology department, through the arrangement of a multi-point volume shrinkage ring, before kidney puncture is carried out, under the suction effect, the part, needing to be punctured, of a patient is in close contact with the multi-point volume shrinkage ring, and when a puncture position is stressed by a puncture needle, the multi-point shrinkage ring can remarkably intercept deformation fluctuation caused by skin stress at the puncture position, the skin deformation range is narrowed, offset caused by skin elasticity during puncture of the puncture needle is reduced, accuracy during kidney puncture is remarkably improved, and the success rate of kidney puncture is increased. Meanwhile, in cooperation with the effects of the inner extending ribbons and the puncture assisting stabbing rods, the inner extending ribbons are punctured when gradually getting close to the outer extending stabbing rods, the disinfection antibacterial liquid in the inner extending ribbons overflows to the skin of the punctured position, bacterium breeding caused by sweat generated when the position makes contact with the multi-point shrinkage ring is effectively avoided, then the punctured wound is effectively protected against infection, and potential safety hazards are reduced.

The invention belongs to the technical field of constructional engineering earthquake resistance, and provides a replaceable cover plate type energy-dissipation steel column base. The steel column base comprises a concrete foundation, a foundation embedded part, an anchor rod, a column bottom casting, a bottom plate, an energy consumption plate, a cover plate, a stiffening rib and a steel column.Through the mode of setting up the energy consumption plate, a cover plate type column base which has a certain bearing capacity, rigidity and energy consumption capacity and has an easily-replaced energy consumption plate is provided in a way of setting up the energy consumption plate; under small earthquake, all components are located in an elastic state; under medium or large earthquake, the only the energy consumption plate in the steel column base can enter plasticity to perform energy consumption, and the other parts are in elastic states. the energy consumption plates can be replaced after medium or large earthquake, the quick repairing of the column base can be realized, and the column base can be recycled.

The invention discloses sports close-fitting trousers with a knee supporting function, belongs to the field of sports pants, and provides the sports close-fitting trousers with the knee supporting function. Through the arrangement of air separation supporting stickers and overflow nets, when knees are stressed, firstly, certain air transfer occurs at the overflow nets, the moving airflow can givea certain gentle massage to the stressed area, reduce the pressure on the knee when the force is applied, and protect the knee from being easily injured; secondly, when the knees are stressed, the airseparation supporting paste is stressed to deform towards one sides of the knees, and the force at the stress points is dispersed outwards along the inner supporting ball net, so that the effect of reducing the local stress at the stress points is achieved, and the knees are prevented from being injured easily; meanwhile, viscous liquid in the liquid transfer support ball overflows from an elastic cotton layer, so that an external support arc plate is supported internally, the liquid transfer support ball is not prone to being integrally flattened when stressed, the knee is better protected,and compared with the prior art, the probability that the knee is injured is remarkably reduced.