76results about How to "Guaranteed bearing strength" patented technology

The invention discloses an electric scooter. The electric scooter comprises a motor base, a left motor wheel, a right motor wheel, a left pedal, a right pedal and circuit boards; the left motor wheel and the right motor wheel are installed on the left side and the right side of the motor base respectively, the left pedal and the right pedal are rotatably installed on the motor base and rotate front and back relative to the motor base, and the circuit boards are used for sensing the rotating angles of the corresponding pedals and controlling work of the corresponding motor wheels according to the rotating angles of the pedals. According to the electric scooter, only one motor base is supplied, the structure strength is high, the reliability is good, and the bearing strength can be effectively guaranteed; through the left pedal and the right pedal which are rotatably installed on the motor base, the circuit boards can control the work of the corresponding motor wheels according to the rotating directions and the rotating angles of the left pedal and the right pedal, advancing, retreating and turning are completely controlled through feet in the driving process of a driver, and the intentions and behaviors of people are highly combined and are approximately consistent with those of people in walking.

The invention provides a gel particle plugging agent with a self-healing characteristic. The gel particle plugging agent is prepared from the following raw materials in parts by mass: 15-35 parts of acopolymerization reaction monomer, 0.1-20 part of a surfactant A, 0.01-0.9 part of an initiator I, 0.01-0.1 part of a cross-linking agent and 0.5-5 part of cationic latex particles; wherein the copolymerization monomer comprises a hydrophilic monomer and a hydrophobic monomer, the hydrophilic monomer is a combination of acrylic acid and an acrylamide monomer, and the hydrophobic monomer is an acrylate monomer. The invention also provides a preparation method and a healing performance evaluation method of the gel particle plugging agent. The self-healing plugging material disclosed by the invention has the characteristic of recoverability after being damaged, is injected into stratum cracks in a particle form, and can form integral gel after being healed, so that the purpose of effectivelyplugging crack pores is achieved.

The invention discloses a low-voltage high-power pressurized water reactor fuel assembly simulation device, which comprises a pressure-bearing assembly, an electric heating assembly and a square flowchannel, wherein the square flow channel is arranged in the pressure-bearing assembly and is hermetically connected with the pressure-bearing assembly; and the electric heating assembly simultaneouslypasses through the square flow channel and the pressure-bearing assembly and is sealed with and fixed to the pressure-bearing assembly. The device meets requirements of a high-temperature and high-pressure experiment, keeps thermal hydraulic characteristic similarity with a reactor fuel assembly, can realize a simulation process of a low-voltage high-power pressurized water reactor fuel assembly,has low energy consumption, simplifies the structure, and is used for the critical heat flux and flow instability experiments of the pressurized water reactor fuel assembly so as to verify the thermal safety performance of a reactor.

The invention discloses a manufacturing technique for performing hot-rolling and hot-forming on toothed T-shaped channel steel, which comprises the following steps: firstly, 75 square billets of Q235 materials are sent into a heating furnace and heated to a temperature of between 1,200 and 1,250 DEG C; secondly, the heated square billets are rolled into nine passes in a blooming mill, and cambered blank sheets rolled from the ninth pass are sent into a rolling mill to be rolled for one pass respectively, and sent into a formation rolling mill and continuously rolled for nine passes; and thirdly, finished product materials which are rolled from the final rolling mill (K1) become the toothed T-shaped channel steel, wherein the inner surface of T-shaped channel steel is provided with meshed teeth and a hollow cavity is a T-shaped channel. The toothed T-shaped channel steel produced by the hot-rolling and hot-forming manufacturing technique has good bearing capacity, high safety and high yield, is favorable for assembly, and can be popularized.

The invention relates to a manufacturing method of a composite material pressure container, which comprises the following steps: 1, connecting an inflating and pressure-maintaining tooling with a lining, inflating the lining with air having a certain pressure to enable the lining to be subjected to swelling deformation, and calculating to determine the internal pressure of the inflated metal lining according to a formula; 2, keeping the lining in a pressure-maintaining state, and performing twisting processing of fibrous composite materials; 3, after the twisting operation is finished, transferring into a curing oven, and performing rotary hot curing; and 4, after the curing operation is finished, naturally cooling, and slowly releasing the internal air to relieve the pressure, thereby ensuring that the elastic contraction of the lining counteracts the compression stress in the twisting process and the curing contraction of the composite material and the lining can be peeled and separated from the composite material layer. According to the invention, the internal stress required in the self tightening process can be reduced, and the swelling deformation rate of the composite material layer can be reduced, thereby lowering the fiber breakage rate of the composite material layer and ensuring high overall performance of the composite material.

The invention discloses a manufacturing technique for performing hot-rolling and hot-forming on toothed T-shaped channel steel, which comprises the following steps: firstly, 75 square billets of Q235 materials are sent into a heating furnace and heated to a temperature of between 1,200 and 1,250 DEG C; secondly, the heated square billets are rolled into nine passes in a blooming mill, and cambered blank sheets rolled from the ninth pass are sent into a rolling mill to be rolled for one pass respectively, and sent into a formation rolling mill and continuously rolled for nine passes; and thirdly, finished product materials which are rolled from the final rolling mill (K1) become the toothed T-shaped channel steel, wherein the inner surface of T-shaped channel steel is provided with meshed teeth and a hollow cavity is a T-shaped channel. The toothed T-shaped channel steel produced by the hot-rolling and hot-forming manufacturing technique has good bearing capacity, high safety and high yield, is favorable for assembly, and can be popularized.

The invention provides a casting tundish composite dry material as well as a preparation method thereof. The dry material is prepared from the following raw materials in parts by weightmass: 20 to 30parts of forsterite, 5 to 10 parts of hydroxymethyl cellulose, 4 to 7 parts of industrial glucose, 3 to 8 parts of high bauxite, 1 to 5 parts of chromium oxide powder, and 2 to 4 parts of sodium hexametaphosphate. The preparation method of the dry material comprises the following steps: (1) uniformly stirring the raw materials in a stirrer,and to obtaining a mixed material; (2) ramming, vibratingand forming the mixed material in a mold, and to obtaining a formed green body; (3) baking the mold and the formed green body in a bake oven with the temperature of 260 to 330 DEG C for 0.5 to 1 hour,cooling, demolding,and to obtaining the casting tundish composite dry material; and (4) performing heatinsulation onng the dry material midbody intermediate for 1 to 3 hours at the temperature of 1050 to 1150 DEG C and 1450 to 1550 DEG C, and thus obtaining thea casting tundish online finished product composite dry material. The dry material does not generate harmful gas in the application process, and is harmless to the human body, pollution-free to the environment, low in carbon residual rate, capable of meeting the production requirement of the ultralow-carbon steel and clean steel, good in sintering performance, good in melt slag permeability resistance, and long in service life.

The invention relates to a soft rock roadway bottom board anchoring, grouting and reinforcing method. Grouting hole channels going deep into a stable rock stratum are downwards formed in the surface of a roadway bottom board, every at least three adjacent grouting hole channels in the same row of grouting hole channels serve as grouting units of the roadway bottom board, grouting anchor cable bundles are placed in the grouting units, and deep-layer-end anchoring, grouting and fixation and shallow-layer periphery grouting and fixation of the roadway bottom board are respectively executed in each grouting anchor cable bundle. The method overcomes the shortcoming that during deep soft rock roadway bottom board treatment in the prior art, a supporting range is small, the strength is low and the long-term stability requirement of a deep soft rock roadway bottom board coal and rock mass is difficultly met.

The invention discloses a cast-in-place pile for enhancing the bearing strength of a deep miscellaneous fill area and a construction method, and relates to the technical field of cast-in-place piles,the cast-in-place pile for enhancing the bearing strength of the deep miscellaneous fill area is prepared from the following raw materials in parts by weight: 355-365 parts of cement, 150-160 parts offly ash, 1240-1250 parts of gravel, 620-625 parts of river sand, 12-16 parts of an expanding agent, 6-8 parts of a stabilizing agent; 4.2-4.8 parts of a water reducing agent, and 175-185 parts of water; wherein the expanding agent comprises calcium oxide, calcium carbonate and silica powder, and the weight ratio of the calcium oxide to the calcium carbonate to the silica powder is (24-26): (12-13): (6-6.5). The cast-in-place pile has the effects of good chloride ion resistance and good sulfate resistance.

The invention belongs to the technical field of high-pressure tanks, and discloses a high-pressure tank and a manufacturing method thereof. The high-pressure tank comprises end cover components, a tank body, a plurality of bolts and a fiber reinforcing layer, wherein each end cover component comprises an end cover body and an end cover flange; the tank body comprises two tank body flanges respectively arranged at two ends of the tank body, and each tank body flange is connected with the corresponding end cover flange; the bolts penetrate through the tank body flanges and the end cover flanges,and are used for connecting the end cover components with the tank body; and the fiber reinforcing layer is capable of connecting the bolts. The manufacturing method concretely comprises the following steps of preparing the fiber reinforcing layer, and winding fibers onto the bolts. The bearing strength of the tank body flanges or the end cover flanges at positions of the bolts is increased, andthe intensity difference defect of the positions of the tank body flanges or the end cover flanges is overcome, further guaranteeing the bearing strength of the high-pressure tank.

The invention discloses a multifunctional box cover of a spare tire storage box in an automobile trunk and belongs to the technical field of automobile accessories. The multifunctional box cover is characterized by comprising a folding table (1) and a plurality of folding stools (3), wherein the side edges of the boards of the plurality of folding stools (3) and the side edge of the table board (101) of the folding table (1) are detachably spliced into a rectangular board covering the upper side of the spare tire storage box in the automobile trunk, folding table legs (2) of the folding table (1) and folding stool legs (5) of the folding stools (3) are folded below the rectangular board respectively, and gaps are formed between each folding table leg (2) and the corresponding spare tire and between each folding stool (3) and the corresponding spare tire.. The box cover of the spare tire storage box is skillfully changed into a detachable spliced body comprising the foldable folding table and the foldable folding stools, the requirement for tables and chairs outdoors is met while the original function of the box cover is not affected, and the problems that the conventional foldable tables and chairs occupy larger automobile space and cannot meet requirement for simultaneous use of multiple people are solved.

The invention discloses an automatic self-controlled telescopic mechanism of windowsill or balcony used for enhancing plant light. The mechanism only comprises a telescopic moving system, a plant movement bearing system, a plant nutrition liquid suspension and storing box and a motion controlling box, the four portions make the entirety have a smaller volume and a lower weight, thereby the mechanism is appropriate to be arranged on the windowsill or balcony, and whether the mechanism is used or not the interior space cannot be occupied. The interior of the plant movement bearing system is used for cultivating plants, and then the motion controlling box is in charge of controlling the telescopic moving system to drive the integral stretching movement of the plant movement bearing system, the nutrition liquid suspension holder and the plant nutrition liquid suspension and storing box, and realize the lighting of the outdoor-stretched plants.

The invention discloses a hollow type liquid crystal television set base. The base comprises a foundation base and a support frame fixed on the foundation base; the base is characterized in that the foundation base is a U-shaped element formed by bent iron material; while the support frame is a bridge-shaped element, the bridge-shaped element consists of a top side made of iron material and two inclined sides symmetrically welded to two sides and made of iron material; the bottom parts of the two inclined sides are respectively welded and fixed with the two opposite sides of the U-shaped element; and the top side of the bridge-shaped element is used for fixing a liquid crystal television set. The base provided by the invention is high in bearing strength, simple in structure, light in weight, and low in manufacturing cost and uses less material.

The invention relates to an industrial microwave magnetron power supply cabinet, comprising a casing, an internal device and an adjustable support; wherein the internal device is fixed to the casing;the adjustable support is installed at the bottom of a magnetron power supply cabinet body; the casing comprises a magnetron power supply cabinet body, a door, a surrounding panel, a lifting ring anda ventilation device; the door and the surrounding panel are mounted on the magnetron power supply cabinet body; a power mounting bracket is layered inside the magnetron power supply cabinet body; thelifting ring is fixed to the top of the magnetron power supply cabinet body; the internal device includes the power mounting bracket, a wire trough group, a magnetron power supply and a busbar bracket; the magnetron power supply is fixed to the power mounting bracket by bolts; and the busbar bracket and the wire trough group are fixed to the magnetron power supply cabinet body. The industrial microwave magnetron power supply cabinet is used in cooperation with microwave drying equipment, particularly suitable for equipment with a large number of magnetrons, and well solves the integrated control storage of the magnetron power supply.

The invention discloses a motor caravan compartment expanding structure for increasing the internal space. The structure comprises a compartment body which comprises a front panel, a back panel, a toppanel and a bottom panel which are arranged on the front, back, upper and lower portions respectively. The compartment body further comprises expanding shelf boards and expanding bottom plates and movable side plates, the expanding shelf boards are hinged to the left and right sides of the top panel, the expanding bottom plates are hinged to the left and right ends of the bottom panel, and the expanding bottom plates include the expanding bottom plate A and the expanding bottom plate B which are hinged; the expanding bottom plates are hinged to the movable side plates, and the movable side plates are in sliding connection with the expanding shelf boards; a triangular rotating block is hinged to the bottom face of the bottom panel and hinged to an electric cylinder, and a connecting rod Ais hinged between the triangular rotating block and the expanding bottom plates. The structure has the advantages of being high in intensity and easy and convenient to operate.

The invention discloses a splicing type construction method of a wall body. The splicing type construction method comprises the following steps that column bodies on the two sides of the wall body are fixed to the tops of corresponding column bodies below the wall body; when the distance between the two column bodies is smaller than or equal to one meter, the two column bodies are fixedly connected through transverse ribs; when the distance between the two column bodies is larger than one meter, the tops of the adjacent lower-layer beam bodies and the two column bodies are spliced and fixed through connecting pieces and at least one prefabricated wallboard horizontal pre-tightening tie bar or vertical pre-tightening tie bar; a fixed beam body is placed on the top between the two column bodies in the extending direction of the wall body; when the distance between the two column bodies is smaller than or equal to one meter, the screw rods at the bottoms of the beam bodies are fixedly connected with the screw rods at the tops of the adjacent lower-layer beam bodies through vertical ribs; cast-in-place concrete C is conducted on the wall defined by the column bodies and the beam bodies and the area located outside the prefabricated wall panel; and after the cast-in-place concrete C is solidified, wall building and forming are completed. According to the splicing type construction method of the wall, the building construction efficiency can be improved, the wall is firm and stable, the integration effect is good, and the good anti-seismic effect is achieved.

The invention relates to a flexible gear and a harmonic reducer with the flexible gear and a rigid gear. When not stressed, flexible gear teeth on the flexible gear and rigid gear teeth on the rigid gear maintain surface contact in a complete mesh state or a semi-mesh state, and after stressed, the flexible gear teeth on the flexible gear and the rigid gear teeth on the rigid gear are turned intosurface contact in the complete mesh state or the semi-mesh state, so that edge mesh and sharp point mesh can be avoided, the situation that serious tooth surface abrasion generated when the flexiblegear and the rigid gear are engaged is effectively avoided, and formation of an oil film is facilitated; and furthermore, stress concentration at an abraded part can be avoided, the bearing strength of the flexible gear and the rigid gear can be ensured, and the service lives of the flexible gear and the rigid gear can be easily prolonged.

The invention discloses an automatic hoisting device. The automatic hoisting device comprises a mechanical arm claw and a suspension mechanism. The mechanical arm claw comprises a driving motor, a transmission mechanism, a fixing plate and a mechanical arm clamping claw which is provided with a vertical mechanical arm. The driving motor is fixed to the fixing plate. A first fixing platform and a second fixing platform are fixed below the fixing plate. One end of the transmission mechanism is connected with an output shaft of the driving motor, and the other end of the transmission mechanism is connected with the second fixing platform. The mechanical arm clamping claw is connected with the first fixing platform and the second fixing platform through retraction components. The transmission mechanism drives the second fixing platform to do lifting movement and drives the mechanical arm clamping claw to do opening or clamping movement at the same time, and articles are grabbed and placed down. The suspension mechanism is connected with the mechanical arm claw through a rope, and used for controlling the position of the mechanical arm claw in the horizontal direction or the vertical direction. The automatic hoisting device is simple in structure, convenient to operate, suitable for lifting and carrying the articles, and especially suitable for mounting and dismounting articles which are arranged on a stand column in a sleeved mode.

The invention discloses a clapper-type relay with a plurality of static springs. The clapper-type relay comprises the plurality of static springs and a base, each static spring comprises a static reedand a static contact; the plurality of static springs are divided into one static spring group or more than one static spring group; the static reeds in each static reed set are arranged in a row inthe width direction of the static reeds, the static reeds in the static reed set are connected into an integral assembly in a mutual insulation mode through a first injection molding piece formed through injection molding, and the first injection molding piece wraps the middle portions of the static reeds. A mounting groove is formed in the base, the integral assembly is arranged in the mounting groove, convex bracts are respectively arranged at two side ends of the integral assembly, and when the integral assembly is arranged in the mounting groove, the convex bracts at the two side ends of the integral assembly are in interference fit with the mounting groove. The relay has the characteristics that the product volume is small, the miniaturization is convenient to realize, the manufacturing difficulty of the product can be reduced, and the assembly consistency is improved.

The invention provides a pressing part structure for a bent plate of a crane, which can prevent a lower die from separating and reciprocating due to unbalanced stress in a pressing process, thereby ensuring the bearing strength of the die and prolonging the service life of the die. The structure comprises a lower die body and a lower die holder welding part structure, wherein the lower die holder welding part structure comprises a base plate, a base upper plate and a base. The structure is characterized in that: the lower die body is a whole embedded lump; the base plate and the base are mounted and fixed by virtue of bolts and pins; and the base and the base upper plate are connected by virtue of welding.

The invention discloses a prefabricated foundation bearing platform comprising a foundation bearing platform body which is a prefabricated foundation concrete body made of concrete. The foundation concrete body is provided with a bearing platform base with the shape and strength meeting bearing requirements. The top of the bearing platform base is provided with at least one a bearing platform connection portion which is fixedly connected with a wall column connection portion of the prefabricated concrete wall column component. According to the prefabricated foundation bearing platform, the prefabricated foundation bearing platform is used for constructing a foundation structure, so that the construction work period can be effectively shortened, the construction efficiency is improved, andthe pollution to the environment around a construction site caused by construction is reduced.

The invention provides a special-shaped steel bar, a steel bar truss and a floor slab hanging mould method system unit. The special-shaped steel bar is used as a steel bar for reinforced concrete, inparticular as component materials of upper and lower chord steel bars of the steel bar truss. According to the constitution method, based on the section reduction rate, through hot rolling technology,the special-shaped steel bar having a recessed groove or trench with appropriate width and depth and same cross-sectional shape along the periphery of a long-stripped round steel bard in length direction. The special-shaped steel bar has helical protrusions or recessed lines at regular intervals in the longitudinal direction on the outer peripheral surface of the round steel bar and recessed groove or trench surface. The special-shaped steel bar is assembled with a web steel bar to form a steel bar truss as the basic unit of the steel bar structure of reinforced concrete components. The structural assembly project of steel bars can be simplified and standardized, and the building construction industry of the house can be industrialized. The construction period can be significantly shortened, the construction cost can be reduced, and the consistency of construction quality can be improved.

The invention relates to a land supporting structure for a green building. The land supporting structure for the green building comprises a bottom supporting plate and a top connecting plate, wherein the top connecting plate and the bottom supporting plate are jointly provided with a bearing assembly, the bearing assembly comprises an extension column, an abutting plate and a concrete pouring block, the extension column is arranged on the side wall, facing the bottom supporting plate, of the top connecting plate, the abutting plate is arranged at one end, away from the top connecting plate, of the extension column, the concrete pouring block is arranged on the top wall of the bottom supporting plate, and one ends, close to the abutting plate, of the abutting plate and the extension column are both located in the concrete pouring block; the top connecting plate and the concrete pouring block are jointly provided with a supporting assembly, and the supporting assembly comprises a pressure bearing column and a preset cylinder; the preset cylinder is arranged on the side wall, away from the bottom supporting plate, of the concrete pouring block, the pressure bearing column is arranged on the side wall, facing the concrete pouring block, of the top connecting plate, and one end, away from the top connecting plate, of the pressure bearing column is located in an inner cavity of the preset cylinder. The land supporting structure for the green building has the effects that the overall bearing strength of the structure is effectively improved, and the stability of the overall structure after long-time use is guaranteed.

The invention relates to a mask structure of an integrated driving position. The mask structure of the integrated driving position comprises a mask and a driving position body, wherein a plug interface is formed between the mask and the driving position body; the positioning of the driving position body in the mask is realized by means of the plug interface; the mask is provided with flanging, extending towards the interior of a vehicle, under a window; a plane, corresponding to the flanging, is arranged at the butt joint part between the upper part of the driving position body and the mask, and the flanging is fixed with the plane by bonding. According to the mask structure of the integrated driving position, the mask of a driving cab and the driving position body are separately molded byopening a mould, and a mould closing interface is reserved. The molded mask and driving position body are subjected to mould closing and surface treatment through the reserved mould closing interface, so that the whole manufacture is completed. The interfaces reserved between the mask and the driving position body are the plug interface and the bonded flanging. The plug interface is used for guaranteeing the accuracy of mould closing positioning of the mask and the driving position body; the bonded flanging is used for guaranteeing the bearing strength of the driving position body after mouldclosing.

The invention provides a gel particle plugging agent with self-healing properties. The gel particle plugging agent comprises the following raw materials in parts by mass: 15-35 parts of copolymerization monomer, 0.1-35 parts of surfactant A 20 parts, 0.01-0.9 part of initiator I, 0.01-0.1 part of crosslinking agent, 0.5-5 part of cationic latex particles; the copolymerization monomer comprises hydrophilic monomer and hydrophobic monomer, and the hydrophilic monomer is A combination of acrylic acid and acrylamide monomers, the hydrophobic monomer is an acrylate monomer. The invention also provides a preparation method and a healing performance evaluation method of the gel particle plugging agent. The self-healing plugging material of the present invention has the characteristic of being recoverable after being damaged, and is injected into formation cracks in the form of particles, and can form an integral gel after healing, thereby achieving the purpose of effectively plugging cracks and pores.

The invention relates to an extinguishing fluid filling bottle which consists of polyvinyl chloride resin, dioctyl phthalate, an MBS intensifier and stearic acid according to a weight ratio of 100:4:2:2.5. The extinguishing fluid filling bottle is obtained by the following steps: sequentially adding the dioctyl phthalate into the polyvinyl chloride resin at 38-42 DEG C, and stirring uniformly for coexisting for 10 minutes; adding the MBS intensifier into the mixture of the polyvinyl chloride resin and the dioctyl phthalate, and stirring uniformly for coexisting for 10 minutes; adding the stearic acid into the mixture of the polyvinyl chloride resin, the dioctyl phthalate and the MBS intensifier, and stirring uniformly for coexisting for 10 minutes; and finally, putting the obtained mixture into an extruder, heating to 160-180 DEG C, performing plasticization for 1 hour, and cutting into granules for forming. The extinguishing fluid filling bottle provided by the invention has the advantages of being abundant in quantity, convenient to take, simple in use method and the like.