142results about How to "With carrying capacity" patented technology

The invention relates to a medium-voltage power transmission fire-resistant cable, which is characterized in that the outer fire-resistant layer of the medium-voltage cable core is made of fire-resistant inorganic fiber heat insulation layer on the inner side, and the outer side is a soft thermosetting elastomer for normal use. The composite fire-resistant and heat-insulating layer of the heat layer, the thermosetting elastomer, is composed of 30-50wt% silicon-based elastic material, 40-60wt% inorganic filler, 5-15wt% medium and low temperature frit, 4-10wt% vulcanizing agent, It is made by mixing extrusion molding and vulcanization. The composite fire-resistant and heat-insulating layer is a relatively soft sheath material when it is not exposed to flames, which can ensure good bending performance of the refractory structure in normal conditions, and quickly transforms into a shell-and-tube refractory and heat-insulating structure when it encounters fire or high temperature. In the fire-fighting environment, it can still maintain a certain period of time without being damaged, effectively preventing damage to the inner insulation caused by flames or high temperatures. When the flame temperature of the outer layer is 850°C, the temperature of the inner insulation surface is lower than 180°C. This fire-resistant and heat-insulating structure can be applied according to conventional cable production methods, and the production efficiency is extremely high.

The invention discloses a locating and mounting method for H-shaped steel girder butting joints. The locating and mounting method specifically comprises the following steps: pre-assembling connection plates on two sides of a web plate of a steel girder I; hoisting and conveying the steel girder I to a steel girder II for butting; providing a locating and mounting device; mounting an adjustment mechanism; mounting a clamping mechanism; aligning bolt holes in the connection plates and the steel girder II; inserting high-strength bolts into the bolt holes in the connection plates and the web plates of the two steel girders to realize connection between the connection plates and the web plates of the two steel girders; removing the locating and mounting device, arranging a top plate on the surfaces of flanges of the steel girder I and the steel girder II, correspondingly forming bolt holes in the top plate and the flanges of the steel girder I and the steel girder II, and connecting the top plate to the steel girder I and the steel girder II through high-strength bolts. The locating and mounting method has the benefits that by the adoption of the adjustment structure and the clamping mechanism which are combined, the transverse staggering and the longitudinal staggering of the bolt holes in the connection plates and the web plates of the steel girders can be eliminated, so that the bolt holes can be quickly aligned to realize temporary fixing for butting of two H-shaped steel girder butting joints, and preparation can be made for the subsequent connection and mounting procedures.

The invention relates to the field of metal cutting additives, in particular to a grinding fluid for metal processing and a preparation method thereof. According to a technical scheme adopted by the invention, the grinding fluid for metal processing is composed of the following components by weight percentage: 5-15% of a PH value stabilizer, 3-5% of a surfactant, 5-10% of a water-borne lubricant,5-15% of an antirust agent, 4-8% of a coupling agent, 0.2-1% of a bactericide, 0.1-1% of a defoamer, 1-3% of a corrosion inhibitor, 0.2-0.4% of a settling agent, and the balance deionized water. The invention has the advantages that: the grinding fluid for metal processing adopts triethanolamine oleate as the surfactant, has good permeability and wettability, is conducive to entering a high temperature and high pressure working face, and at the same time is also a lubricant, the molecule has strong polar groups, can achieve strong adsorption with the metal surface, and chemical reaction can becarried out to form a firm physical absorption film and chemical reaction film with certain carrying capacity.

The invention provides a special-shaped micro stepped bearing. The special-shaped micro stepped bearing comprises a static flat plate and a moving flat plate which are paired. The static flat plate is provided with a stepped surface. The convex surface of the static flat plate is coated with an oleophylic coating. The concave surface of the static flat plate is coated with an oilphobic coating. The motion direction of the moving flat plate is that the convex surface of the static flat plate points to the concave surface of the static flat plate. A clearance between the paired static flat plate and moving flat plate is full of lubricating oil. The clearance between working surfaces of the paired static flat plate and moving flat plate is in a nanometer scale. The special-shaped micro stepped bearing is formed by the paired static flat plate and moving flat plate. The special-shaped micro stepped bearing is suitable for occasions where surface clearances of bearing inlet areas are smaller than surface clearances of bearing outlet areas, and a traditional stepped bearing cannot be suitable for the occasions. The bearing is simple in structure, easy to manufacture and low in cost, has certain bearing capacity, is provided with a good lubricating oil film and can achieve good antifriction and wear-resisting effects.

The invention provides a concentric centripetal sliding bearing formed by using interface slippage. The sliding bearing comprises a shaft and a bearing hole which are concentric, wherein a gap is formed between the shaft and the bearing hole, and the gap is filled with fluid to form a lubrication region; the lubrication region is divided into a sub region I and a sub region II, the static contact surface of the sub region Iis coated with a coating, so that the interface shear strength between the fluid and the coating is too low to enable the fluid to generate slippage on the surface of the coating, and fluid does not generate slippage on the rest static contact surface of the bearing and the whole movable contact surface of the bearing. The bearing disclosed by the invention has definite bearing capacity, is low in friction coefficient, is good in abrasion resistance, is high in support precision, is simple to realize, is low in cost, and has an important use value.

The invention provides prefabricated concrete structure plastic controllable steel joints. An upper column of the prefabricated concrete structure is docked with a lower column of the prefabricated concrete structure through a pre-embedded inner ring steel plate and a pre-embedded outer ring steel plate, and force type steel is connected between the middle of the end faces of the upper column and the lower column; a side plate of the outer ring steel plate is connected with a rectangular steel casting member through a fixing member, the rectangular steel casting member is connected with a radial spherical plain bearing, the radial spherical plain bearing is connected with a concrete beam through the steel casting member, the two sides of a box-type energy dissipation sealing plate damper are connected with the rectangular steel casting member and a steel box-type conversion beam section through bolts correspondingly, and the radial spherical plain bearing is located in the box-type energy dissipation sealing plate damper; and the steel box-type conversion beam section is connected with the concrete beam. According to the technical scheme, the whole process of construction is dry, the construction quality is easy to guarantee, and the steel joints are easy to install and detach, small in environmental pollution, controllable in structural plastic and good in shock resistance.

The invention discloses a negative Poisson's ratio lattice structure topology optimization method considering bearing characteristics. The method comprises: firstly, using an improved SIMP interpolation function for defining the relation between the elasticity modulus and the density of a material, then solving an equivalent elastic matrix of a microstructure on the basis of an energy homogenization method, and representing the equivalent elastic matrix by using an equivalent method in allusion to the high nonlinearity of a negative Poisson's ratio expression of the structure; and finally, constructing an optimization model taking the negative Poisson ratio and the rigidity of the structure as targets, solving the topological optimization model by utilizing an improved OC algorithm, and outputting optimal unit cell configurations with different weights. According to the method, the bearing characteristic and the energy absorption characteristic of the structure are represented by the rigidity and the negative Poisson ratio respectively. The provided examples show that the topological optimization method comprehensively considers the structure bearing and energy absorption characteristics, the optimized lattice structure can effectively absorb energy generated by collision, the structure does not collapse in the compression process, and the topological optimization method has acertain bearing capacity.

The invention relates to an active flexible telescopic truss structure, and belongs to the technical field of morphing aircraft structural design. The structure comprises a first panel and a second panel, a telescopic truss, springs and controllable alloy wires, wherein the first panel and the second panel are opposite to each other; the telescopic truss is arranged between the first panel and thesecond panel and can be stretched between the first panel and the second panel; the springs are perpendicular to the movement direction of the telescopic truss, and are respectively connected to thefirst side and the second side of the telescopic truss; the controllable alloy wires are respectively arranged on the first side and the second side of the telescopic truss; and stretching of the telescopic truss can be controlled through the control of the controllable alloy wires. The active flexible telescopic truss structure is driven through the controllable alloy wires (shape memory alloy wires), drives angles between telescopic trusses to change, and achieves the purpose of telescopic deformation.

The invention relates to a management method of a timer, comprising the steps of: dividing the time periods of the timer according to millisecond; and respectively storing a mutex lock, a flag bit and timer information associated with each time period in a memory. For each time period, the mutex lock is stored in the form of semaphore numerical value; the flag bit is stored in the form of unsigned short integer numerical value; the timer information is stored in the form of 16 continuous memory blocks, each of which can be used for storing the timer information of the timer in the belonged time period; and each bit of the flag bits orderly corresponds to one of the 16 memory blocks, respectively, so as to mark the use condition of the timer information in each memory block. According to the invention, the millisecond real-time timer is realized and has the advantages of: (1) satisfying the millisecond response mechanism of a real-time transaction system, (2) having multi-clue high-throughput bearing capability, and (3) supporting fast search.

The invention discloses high-performance nano thermal insulation materials with ultralow heat conductivity coefficients and a preparation method of the high-performance nano thermal insulation materials, and belongs to a thermal preservation and insulation material. The thermal insulation materials at least comprise thermal insulation padding, a barrier film coats the thermal insulation padding, the inner portion of the barrier film is in a vacuum state, and the barrier film is in close contact with the thermal insulation padding under the action of vacuum. A vacuum thermal insulation structure formed by the composite thermal insulation padding is adopted to improve thermal radiation, the thermal insulation performance of thermal insulation materials is effectively improved, the thermal insulation performance of the materials can be further improved with the assistance of all kinds of aerogel, and the heat conductivity coefficients obtained by the experiment of the inventor can reach 0.005W/m*K. In addition, the supporting structure inside the thermal insulation materials is optimized through a nano composite material technology, the thermal insulation materials are made to have certain bearing capacity, and meanwhile the materials are especially suitable for being used as the thermal insulation and thermal preservation materials in a sealed-space thermal insulation system with a limited size, can also be used in other devices or appliances to carry put thermal preservation and insulation, and are wide in application range.

The invention relates to a method for construction and service of time tag business data for communication, which belongs to the technical field of communication. The method comprises the following steps: receiving a service request of a client through a server at first, analyzing business contents in the request and time tag information corresponding to the contents, and packaging the original data to form a business data packet according to the granularity of the time tag information; adding the time tag information into the business data packet to form a primary business data packet; obtaining a priority level of the primary business data packet according to the time tag information, and constructing time tag business data; determining a transmission sequence through the server according to the network communication capacity, the priority level and the time tag information; configuring the number of resources for storage, computation and communication of each time label business data; and transmitting the business contents of the request to the client and charging according to the transmission sequence. The invention makes the business flow in the network smooth, and eases the tension of resource allocation and the pressure for upgrading the network equipment.

The invention discloses a preparation method of an aluminium alloy rod for electric bicycle frame pipes, which is characterized in that the aluminium alloy comprises the following components by weight: 2-3% of Si, 2-5% of Mg, 0.5-1% of Zn, 0.2-1% of Mn, 0.3-0.7% of Cu, and the balance of Al and inevitable impurities; the preparation method comprises the following steps: (1) melting the ingots and intermediate alloy according to the weight ratios respectively; (2) injecting Ar-Cl2 mixed gas into a melting furnace, refining at a temperature of 710-730 DEG C for 8 min-10 min to obtain aluminium alloy melt; (3) adding an aluminium titanium boron grain refiner with the stream so as to allow the elements in the aluminium titanium boron grain refiner to uniformly melt in the alloy melt; (4) casting at a casting temperature of 720 DEG C-730 DEG C and with a casting speed of 45 mm/min-55 mm/min to obtain the aluminium alloy rod.

The invention discloses a preparation method of a high-speed grinding fluid for a bearing, and relates to the field of metal machining fluid. The method comprises the steps of preparing raw materials, stirring, dissolving and measuring the pH value, so as to finish preparation of the high-speed grinding fluid for the bearing. The high-speed grinding fluid prepared by the preparation method disclosed by the invention is good in cooling performance, lubrication performance and cleaning and scouring performance, especially suitable for high-speed grinding with a linear speed of not less than 40 m/s, and capable of effectively increasing grinding efficiency.

This invention discloses a Mg alloy mud plate and its production method including the following steps: eliminating skins of Mg alloy rods and adding them into a heating oven to be heated to 400deg.C to keep it for 24h then to be cooled to room temperature in air then to be sent into a heating oven to be heated to 350-400deg.C to be kept for 3h then to be sent into a squeezer to be squeezed to sections then carrying out de-stress annealing or artificial aging process, finally, mechanical molding is finished.

The invention relates to a preparation method for partial water permeation floor tiles and the partial water permeation floor tiles. The preparation method comprises the following steps: A, preparing a hollow pattern mold according to a set hollow pattern; B, mutually embedding a floor tile brick mold of which the size is larger than that of the hollow pattern mold into the hollow pattern mold, putting the molds at a fixed position, then filling a region between the floor tile brick mold and the hollow pattern mold with a non water permeation material, and performing extruded forming; C, taking out the floor tile brick mold and the hollow pattern mold, ensuring that the hollow pattern is complete, and forming hollow tiles through maintenance; D, filling hollow parts of the hollow tiles with water permeation materials, enabling the water permeation material filling regions in the hollow parts and the whole hollow tiles to form an integrated structure through compaction or under the action of self-adhesion of the water permeation materials. A pavement paved by the partial water permeation floor tiles has certain bearing capacity and water permeation and ventilation ecological performance; meanwhile, the cost can be reduced, and the landscape effect is enhanced.

The invention discloses a production method for an aluminum alloy bicycle frame pipe for an electric bicycle. The aluminum alloy comprises, by weight, 2-3% of Si, 2-5% of Mg, 0.5-1% of Zn, 0.2-1% of Mn, 0.3-0.7% of Cu, and the balance of Al and other inevitable impurities. The production method comprises the following steps: (1) smelting the aluminum alloy according to the components and casting into a bar; (2) carrying out a homogenizing annealing treatment; (3) discharging the bar from a furnace after carrying out the homogenizing annealing treatment, cooling to a room temperature, then placing the bar in a heating furnace to heat to the temperature of 430-450 DEG C, and holding the temperature for 3 hours; concurrently heating an extrusion mold to the temperature of 350-380 DEG C, and heating an extrusion material cylinder to the temperature of 350-380 DEG C; (4) placing the heated aluminum alloy bar into an extruder to extrude into the bicycle frame pipe profile, wherein the extrusion speed is 2-7 m/min.

According to a ceramic matrix composite strength prediction method considering bearing of broken fibers, in a ceramic matrix composite, the broken fibers have certain bearing capacity due to the loadtransmission effect of the interfaces between the fibers and a matrix. According to the method, the continuous bearing of the broken fiber is considered, the method for judging the fiber breakage position is given, the stress of the broken fiber on the crack plane of the matrix is calculated, the strength of the ceramic matrix composite material is finally obtained, and the precision of a prediction result can be greatly improved.

The invention discloses a sludge solidification device combined with vacuum grouting and resistance heating, which comprises a grouting pipe, a drainage board, a horizontal drainpipe, a resistance wire, a horizontal grouting conduit, a grouting hose, a grouting pump and a curing agent slurry storage There are multiple grouting pipes, and each grouting pipe is formed with a number of grouting holes, and the multiple grouting pipes are respectively connected with the horizontal grouting conduit, and a drainage plate is set between two adjacent grouting pipes , a plurality of drainage boards are respectively connected with the horizontal drainage pipe, the horizontal drainage pipe is connected with the external drainage pipe, the resistance wire is wound on the drainage board, the resistance wire is electrically connected with the power supply arranged in the external power supply control box, and the horizontal slurry delivery conduit passes through the The slurry hose is sequentially connected with the slurry delivery pump and the slurry storage tank of the solidifying agent; the invention also discloses a sludge solidification method using the device, which is suitable for sea flat sludge, shallow soft ground or deep soft ground for land reclamation, and improves sludge Improve the degree of consolidation and reduce the consolidation time, so that the solidified sludge has a certain bearing capacity.

The invention provides a locking mechanism. The locking mechanism comprises a rotary table, a connecting rod, a locking column seat and a locking column bushing. Since the connecting rod is hinged tothe rotary table, when the rotary table rotates, the connecting rod can be driven to move, a locking column hinged to the other end of the connecting rod is pulled, so that the locking column can be movably inserted into the locking column bushing to realize the locking function of the locking mechanism, since a limiting spring squeezes the locking column and the locking column seat body in the locking column seat body, the locking column is separated from the locking column bushing by the elastic force of the spring, so that the unlocking function of the locking mechanism is realized, the locking mechanism can be applied to a car door and a car window, so that when a car is in a bad environment, the locking mechanism of the door and window further has certain carrying capacity, and the practicality is good.

The invention provides a guiding and guarding clamping device and a rolling machine. The guiding and guarding clamping device comprises a framework, an adjusting mechanism comprising two screws and a guiding and guarding mechanism comprising an upper guiding and guarding box and a lower guiding and guarding box, wherein the framework comprises an upper cross beam and a lower cross beam which are opposite, a first side wall and a second side wall which are opposite, a first front pressing plate and a first rear pressing plate which are vertically connected to the first side wall, and a second front pressing plate and a second rear pressing plate which are vertically connected to the second side wall; a first sliding groove is defined by the first side wall, the first front pressing plate and the first rear pressing plate, and a second sliding groove is defined by the second side wall, the second front pressing plate and the second rear pressing plate; first and second external threads are separately arranged at the upper and lower parts of each screw; the two ends of the upper guiding and guarding box are separately arranged in a manner capable of sliding in the first sliding groove and the second sliding groove and are in surface contact with the first sliding groove and the second sliding groove; the two ends of the lower guiding and guarding box are separately arranged in a manner capable of sliding in the first sliding groove and the second sliding groove and are in surface contact with the first sliding groove and the second sliding groove; and the screws rotate and drive the upper and lower guiding and guarding boxes to slide in a face-to-face manner or back-to-back manner. The guiding and guarding clamping device has large bearing capability.