39results about How to "Increase the effective bearing area" patented technology

The invention discloses a method for synchronously implementing friction stir spot welding, soldering and diffusion welding of aluminum and magnesium dissimilar materials. The operation process includes the following steps of fixing a clean aluminum plate to a clean magnesium plate in an overlap joint mode, adding a solder piece between the two plates with both sides of the solder piece in contact with the aluminum plate and the magnesium plate, and implementing friction stir spot welding on the fixed overlap joint structure. In the welding process, on the one hand, the friction stir spot welding of the aluminum plate and the magnesium plate is realized through the action of a stirring pin on a stirring head with the plates below; on the other hand, under the action of friction heat of a shaft shoulder of the stirring head and forging force, the surrounding area near the stirring pin is high in temperature, the solder piece is melted, and soldering connection is formed between the aluminum plate and the magnesium plate; while in the area far away from the stirring pin, atomic diffusion occurs between the aluminum plate and the solder piece as well as between the magnesium plate and the solder piece under the action of heat of stirring friction, so that diffusion welding is formed. The method can form soldering and diffusion welding connectors at the same time of friction stir spot welding, increase the effective bearing area of welding spots and improve the anti-tensioning shear force of the connectors.

The invention discloses an enlarging repair and reinforcement method of roadways at a crossing. The method includes the steps of 1, selecting the roadways at the crossing, requiring enlarging repair and reinforcement, and referring the roadways on left and right sides of the crossing as a left crossheading and a right crossheading; 2, detecting growth condition of surrounding rock fissures of the right crossheading, and performing grouting reinforcement; 3, enlarging the right crossheading to form an enlarged right crossheading (10); 4, closing the left crossheading; and 5, excavating a new left crossheading (12) on one side of the left crossheading. The problems that when the roadways at the crossing are under the effect of factors such as mining induction and high stress, surrounding rock deformation is large and repair and reinforcement are difficult can be effectively solved. Effective bearing area of a coal (rock) pillar in a repaired triangular area is not decreased but increased, unit stress of the coal (rock) pillar is reduced, and overall stability of the coal (rock) pillar is improved. During repairing, the left and right crossheadings are carried out in order, and normal production of a mine is guaranteed.

An early-strength grouting material for overweight and oversized equipment installation is characterized in that the raw materials are composed of cement, fly ash, expansion agent, coagulation regulator, retarder, water reducer, yellow sand, defoamer and pebbles, and its The ratio is calculated in parts by mass: cement: 1.00~1.05, fly ash: 0.18~0.22, expansion agent: 0.1~0.12, coagulation regulator: 0.13~0.16, retarder: 0.003~0.005, water reducer: 0.003~0.005, yellow sand: 1.09~1.29, defoamer: 0.004~0.006, pebble: 1.1~1.3. The early-strength grouting material for installation of super-heavy and super-large equipment and the construction method thereof have the advantages of super-early strength, fast setting speed, high mechanical performance, shortened construction period, and reduced engineering cost.

The invention discloses a support leg disc, which comprises a bottom plate (10), a ball head concave seat (20) and a support plate, wherein the center of the bottom plate (10) is provided with a center hole (11), the lower side edge of the support plate is fixedly arranged on the bottom plate (10) in the radial direction, and the ball head concave seat (20) is fixedly arranged on the upper side edge of the support plate. Through the technical scheme, the center hole is arranged in the bottom plate of the support leg disc, so a born vertical load is transmitted to the bottom plate in an inclined way. Through the structure, the effective carrying area is enlarged, in addition, the profit distribution is uniform, and simultaneously, the gyroscopic moment transmitting capability is improved.

The invention discloses a special-shaped three-dimensional earthquake isolation supporting base. The special-shaped three-dimensional earthquake isolation supporting base is arranged between an upper-part structure and a lower-part structure which need earthquake isolation, and comprises a bottom board, at least two special-shaped supporting base bodies, upper-part connecting corner blocks, lower-part connecting corner blocks, a horizontal supporting base and a sliding face board; the bottom board is connected with a lower-part structure; the special-shaped supporting base bodies are composedof first elastic blocks clamped by upper sealing boards and lower sealing boards in parallel with one another; the upper-part connecting corner blocks and the lower-part connecting corner blocks are provided with horizontal bottom surfaces and oblique top surfaces, and when the upper-part connecting corner blocks are arranged invertedly and the lower-part connecting corner blocks are overlaid withthe upper-part connecting corner blocks, the bottom surfaces are parallel; the horizontal supporting base is composed of a second elastic block clamped by an upper board and a lower board; after theupper-part connecting corner blocks are arranged invertedly and sequentially connected with the special-shaped supporting base bodies and the lower-part connecting corner blocks, the upper-part connecting corner blocks are fixedly supported on the bottom board in a central symmetrically distributed mode, and the sliding face board is fixed to the bottom surfaces of the upper-part connecting cornerblocks; and the horizontal supporting base is supported on the sliding face board in a mode capable of rotating round a central symmetric line, the contact surface of the horizontal supporting base and the sliding face plate adopts a friction material, and the upper board of the horizontal supporting base is connected with an upper-part structure. The special-shaped three-dimensional earthquake isolation supporting base can be synchronously isolate horizontal and vertical earthquake, and can be used for vertical earthquake isolation of buildings with comparatively large self-weight.

The invention discloses a manufacturing process for a high-strength double-layer oil storage tank. The process comprises the steps of preparing of an inner tank body and two seal heads, splicing, preparing of a middle layer and preparing of an outer-layer tank body and tank mouth hole accessories; and an inner-layer tank body and the two seal heads are manufactured through dies, and are spliced toform the inner tank body, and then the steps of preparing of the middle layer, preparing and bonding of reinforcing ribs and preparing of the outer-layer tank body and the tank mouth hole accessoriesare carried out to obtain the double-layer oil storage tank. The oil storage tank is made of high-strength glass fiber reinforced plastic, and a glass fiber material is arranged between an outer structure layer and an inner structure layer of a tank body wall. According to the process, an anti-impact plate is arranged on the inner surface of a tank body, so that the inner wall of the storage tankis not prone to damage; the plurality of reinforcing ribs are arranged in the oil storage tank body, so that the pressure-bearing capacity of the tank body is greatly improved, and the storage tank is not prone to deformation when being used for a long time after being buried; the seal heads of the tank body adopt two split seal head body structures, so that the pressure bearing capacity of the oil tank is further improved, the evaporation loss of an oil liquid can be effectively reduced, and the leakage of the oil liquid is prevented; and according to the high-strength double-layer oil storage tank, the sealing effect is good, the service life is long, and the safety is higher.

The invention discloses a flowerpot separating device and method suitable for stacking of plastic flowerpots in various shapes. The flowerpot separating device comprises a positioning and bearing mechanism, a flowerpot separating mechanism and a single flowerpot conveying mechanism. The positioning and bearing mechanism is used for limiting the flowerpot to only move in the vertical direction; the flowerpot separating mechanism separates the stacked flowerpots into single flowerpots and the single flowerpots fall to the single flowerpot conveying mechanism; the flowerpot separating mechanism comprises four double-line variable-pitch screws; each of the double-line variable-pitch screws is provided with two spiral lines of which the screw pitches are gradually increased from top to bottom, and the space between the smaller sides of the two spiral lines is kept unchanged in the axial direction of the double-line variable-pitch screw; the difference between the phase angles of every two adjacent double-line variable-pitch screws is 90 degrees, and the phase angles of the four double-line variable-pitch screws are not equal. Two adjacent flowerpots can be gradually and slowly separated, and it is guaranteed that the flowerpots fall in a stable posture and are arranged on the conveying belt at the same interval.

The invention discloses a welding connection method for aluminum alloy pipelines of different diameters. The method comprises the steps that an aluminum alloy pipeline connector with the diameter slightly larger than that of an alloy pipeline is machined according to the diameter of the alloy pipeline , a plurality of trough type through holes are formed in the two sides of the pipeline connector in the circumferential direction, the center line of each trough type through hole is perpendicular to the axis of the pipeline, the distance between every two adjacent trough type through hole is no smaller than the length of each trough type through hole, and 50-60-degree beveled edges are machined on the inner surface of the two ends of the pipeline connector, welding is conducted on the ends and the trough type through holes, then partial heat treatment is conducted on the pipeline connector, and anticorrosive paint is prepared to paint the pipeline connector at last. The welding connection method for the aluminum alloy pipelines of the different diameters can be used for connecting the aluminum alloy pipelines of the different diameters, and is easy to operate and implement, and easy to industrially popularize.

The invention discloses a high-temperature inorganic ink based on low-melting-point glass powder, and belongs to the technical field of ink. The inorganic ink comprises the following raw materials inparts by weight: 40-60 parts of low-melting-point glass powder, 15-20 parts of an inorganic pigment, 25-35 parts of water-based high-viscosity resin and 12-15 parts of zirconium oxide. The invention further discloses a preparation method of the high-temperature inorganic ink based on the low-melting-point glass powder. The preparation method comprises the following steps: step 1, adding low-melting-point glass powder, water-based high-viscosity resin and zirconium oxide into a container according to the formula, uniformly stirring to form a mixture, and controlling the temperature to be 50-70DEG C; and step 2, adding an inorganic pigment into the mixture obtained in the step 1, and continuously stirring for 30-50 minutes to obtain the high-temperature inorganic ink. According to the method, the high-temperature inorganic ink is prepared from the low-melting-point glass powder, in the application process, on the premise that certain hardness is maintained, the rigidity is reduced, thetoughness is enhanced, and the impact resistance and the tear resistance are improved at the same time.

The invention discloses an Archimedes spiral curved surface dynamic-pressure sliding bearing and application thereof. The sliding bearing includes a bearing body, and at least one Archimedes spiral curved surface is arranged on the inner wall of the bearing body in the peripheral direction, and used for forming a bearing lubricating oil cavity; the maximum cutting-in depth portion of the top of the Archimedes spiral curved surface is provided with an oil inlet, and the maximum cutting-in depth portion, close to the end face of the bearing body, of the bottom of the Archimedes spiral curved surface is provided with an oil outlet. According to the Archimedes spiral curved surface dynamic-pressure sliding bearing and the application thereof, an existing sliding bearing structure is referred to, and in combination with the practical application background, a novel oil cavity structure which is the oil cavity formed by the Archimedes spiral curved surface is provided; therefore, the circulation of lubricating oil can be effectively speeded up, the heating of the bearing can be reduced, and the temperature rise of the bearing can be reduced; meanwhile, the bearing has a large effective load area and is suitable for high-speed heavy-load occasions.

Disclosed is a headrest system for resting and sleeping. Soft and elastic substances such as sponge are arranged in a headrest. The headrest system is characterized by comprising a forehead pillow and a base, the forehead of a head contacts with the forehead pillow when the headrest system is in use, face pillows are arranged below two sides of the forehead pillow, and the headrest and the face pillows are arranged on the base.

The invention discloses an irregular shape shock insulation support having a high bearing capacity. The irregular shape shock insulation support consists of the alternately overlapped portions of an upper sealing plate, a lower sealing plate, an elastomer and a reinforcing plate. With respect to other shock insulation supports having rectangular vertical cross sections, when the irregular shape shock insulation support is in a horizontal ultimate deformation state, the effective bearing area of the shock insulation support under an ultimate shearing deformation state is increased by means of haunching on the top and at the bottom of the support, and the concentrated stress of the reinforcing plate is reduced, thereby greatly increasing the vertical bearing capacity of the shock insulation support; meanwhile, the upper sealing plate and the lower sealing plate are in the same size, accordingly providing convenience to the installation and the construction, and being able to meet the requirements of buildings and equipment to the shock insulation support having the high bearing capacity.

A static pressure-permanent magnetic double suspension support guide rail system is composed of two sets of support systems: a permanent magnetic suspension system and a hydrostatic pressure system. The four bar-shaped grooves on the top and bottom of the existing guide rail are equipped with permanent magnet strips that are installed side by side and have opposite magnetic pole directions of the two adjacent permanent magnet strips. There are four identical rectangular oil inlet chambers on the inner side of the upper and lower static pressure guide plates, and a connected Tianzi-shaped oil return chamber A is arranged around the four oil inlet chambers. Grooves are arranged in the middle entities of the four oil inlet chambers, and permanent magnet strips are arranged in parallel in each groove. These permanent magnet strips are all opposite to the permanent magnet strips on the guide rail grooves and have the same magnetic poles. The static pressure guide plates on both sides are provided with a rectangular oil inlet chamber and a Japanese-shaped oil return chamber, and the oil pipe joints and fastening screws are all arranged on the static pressure guide plates on both sides. The invention can increase the bearing capacity and static rigidity of the guide rail system, and improve the machining accuracy and stability of workpieces.

The invention discloses a bearing structure, a mechanical part and a construction device, and relates to the technical field of bearing. The bearing structure comprises a basic member, a bearing partand recess cavities, the basic member includes a first surface, the bearing part includes second and third surfaces arranged opposite to each other, the bearing part is connected to the basic member via surface-surface connection between the second and first surfaces, and the multiple recess cavities extending towards the first surface are arranged in at least part of the third surface at interval. Compared with a present weld seam, the surface-surface connection area can be increased substantially, a bearing force is higher, and under the same load condition, the maximal stress peak of the bearing structure is lower, the possibility of risk is lower, and the bearing structure is safer; and the recess cavities are arranged so that the bearing force can be diffused and distributed to wallsof the recess cavities, the load force is easier to bear, the safety of the bearing structure is improved, the weight of the bearing part can be reduced, and the cost is reduced.

The invention relates to a power generation network system composed of a siphon network. The power generation network system aims to solve the defects, caused by dam construction of hydropower stations, of large investment, long construction period and low utilization rate of water resources in the prior art. The power generation network system comprises water sources at different altitudes, siphon water diversion power generation devices, water reservoirs at different altitudes, connector bolts, easy-to-build easy-to-control siphon pumps, water transportation pipe networks and siphon water transfer valves. The easy-to-build easy-to-control siphon pumps suck and deliver water in the water sources at different altitudes to the water transportation pipe networks by using the siphon principle, and the siphon water diversion power generation devices can be driven to generate power by using the terrain differences of the water transportation pipe networks. The power generation network system composed of the siphon network has the beneficial effects that the high-efficiency utilization of the water resources and the high-efficiency conversion of potential energy are realized, one pipe network has a plurality of functions such as flood control, irrigation and power generation, the power generation network system is not affected by dry seasons and wet seasons, and the potential energyconversion effect is good.

The invention relates to a ceramic perforation blanking cover of an oil well perforator and a production method thereof. The improvement of the invention is that a metal wafer in the existing perforation blanking cover is replaced with a ceramic part by utilizing the characteristics of ceramic of good bursting performance, easy frangibility, high hardness and the like so that the perforation blanking cover bursts into a large number of fragments in a perforation, the particles of the ceramic fragments are small, the hardness is high, and the capacity of penetrating rock strata and the penetrating area are greatly improved so as to lead the perforation effect to be greatly improved. The production method is characterized in that the grinding procedures of ceramic wafers are increased so that the ceramic wafers are ground to be level in the process and the effective pressure bearing area in vulcanization is enlarged, meanwhile, certain roughness of the surface is ensured in grinding so that the ceramic wafers are not crushed and can be stuck fixedly in the subsequent rubber vulcanization hot moulding process. Therefore, the problem that the blanking cover is easy to be crushed in vulcanization moulding process is solved, the yield is greatly improved and metal material is replaced with ceramic material.

The invention relates to a welding connection method for aluminum alloy pipes with the same diameter. According to the diameter of the aluminum alloy pipe, a section of aluminum alloy pipe with a diameter slightly larger than the diameter of the pipe to be connected is selected or processed as a pipe joint. A number of groove-shaped through holes are respectively opened along the circumferential direction on both sides. The center line of the groove-shaped through-hole is perpendicular to the axis of the pipe joint, and the distance between two adjacent groove-shaped through-holes is not less than the hole of each groove-shaped through-hole length; then process a 50-60° bevel on the inner surface of the two ends of the pipe joint; then weld the above-mentioned ends and grooved through holes respectively, and then perform local heat treatment on the pipe joint, and finally prepare an anti-corrosion coating at the pipe joint. The invention has simple operation and implementation, and is easy to be popularized in industry.