11results about How to "Small modulus" patented technology

The invention discloses a box type prefabricated part system which comprises a right-angle steel frame, an inner formwork system, an outer formwork system and an end formwork, third guardrails are fixedly installed above the right-angle steel frame, and reinforcing beams are arranged at the tops of the third guardrails; through the arrangement of the protection mechanism and the locking mechanism, the safety protection effect in the construction process can be improved, meanwhile, protection parts can be rapidly spliced and connected, meanwhile, the protection parts can be rapidly disassembled and assembled, people can use the protection parts conveniently, meanwhile, the safety in the inspection process is improved, and the construction efficiency is improved. The first guardrail body and the second guardrail body can be rapidly connected through cooperation of a connecting base, a threaded rod, a baffle and a threaded sleeve, and a fixing sleeve and a first side plate are conveniently connected with a clamping sleeve and a second side plate through an inserting rod and a stress plate; and the third guardrail and the first guardrail or the second guardrail can be connected and reinforced in an inserted mode through the reinforcing beams, so that the required protection performance is improved.

The invention relates to a robot bionic knee joint mechanism, and belongs to the field of robot multi-degree-of-freedom bionic mechanisms. The thigh structural component is vertically arranged; the gear connecting rod component is mounted at the bottom end of the thigh structural component; the driving gear component and the transmission gear connecting rod component take the gear connecting rod component as a shaft; the transmission gear connecting rod component and the driving gear component are meshed and matched with the thigh structure component; the top of the shank structural component is in butt joint with the transmission gear connecting rod component; the transmission gear connecting rod component is meshed with the thigh structural component to rotate to drive the shank structural component to do translational motion relative to the thigh structural component; two ends of the rotary connecting rod component are respectively butted with the middle parts of the driving gear component and the shank structural component; the driving gear component is meshed with the thigh structural component to rotate, and the shank structural component is driven to rotate relative to the thigh structural component through the rotating connecting rod component; the problems that a knee joint bionic mechanism is poor in motion matching, complex in composition, large in size and complex in control are solved.

The application provides a lifting mould frame vehicle, which comprises a base, a frame body and an integrated module, the frame body is arranged on the base, and the integrated module is arranged on the frame body; the base is used for realizing walking of the lifting mould frame vehicle; the frame body comprises a telescopic vertical rod and a lifting system, which are used for realizing lifting of the integrated module; the integrated module is composed of a keel frame and a mould plate and is installed at the top end of the frame body. The universal telescopic frame of the mould frame vehicle can adjust the frame module size, and one can become many. The vehicle body can be folded and combined, so that the floor area is reduced and the transportation cost is reduced. The vehicle body is simple to assemble, and the integrated module is fast to install. The base and the frame body are simple to disassemble and assemble, the process of climbing up and down is reduced, and the labor intensity is reduced.

The bidirectional gear pump comprises a front shell, a rear shell, a first shaft hole, a second shaft hole, a third shaft hole, a fourth shaft hole, a first gear shaft and a second gear shaft, wherein the first shaft hole, the second shaft hole, the third shaft hole and the fourth shaft hole are vertically and symmetrically formed in the horizontal center line of the front shell and the rear shell; a first groove and a second groove are formed around the first shaft hole and the second shaft hole, the first gear and the second gear are installed in the grooves, and the first gear and the second gear are connected in a meshed mode; oil drainage grooves are formed in the outer end surfaces; the thicknesses of the first gear and the second gear are consistent with the depths of the first groove and the second groove of the front shell; an oil inlet and an oil outlet are formed in the outer end face of the rear shell and located in the two sides of the vertical center line of the rear shell. No gap exists between the inner end face of the front shell and the inner end face of the rear shell.

The present invention relates to the technical field of building materials, and discloses an ultra-lightweight high-strength geopolymer-based composite material and a preparation method thereof. The ultra-lightweight high-strength geopolymer-based composite material comprises: a gelling material, hollow microspheres, an activator, and polyethylene fibers. The gelling material comprises: granulated blast furnace slag and microsilica powder; the activator comprises: water, sodium silicate, or a mixture of sodium silicate and sodium carbonate. The present invention uses sodium silicate or a mixture of sodium silicate and sodium carbonate as an activator, and the sodium silicate modulus of the activator is 1.2 to 1.6, so that the product has a higher early compressive strength. At the same time, the present invention uses hollow microspheres as lightweight micro-aggregates to make the composite material have properties such as light weight and high strength. The polyethylene fiber can improve the defects of low tensile strength and poor toughness of ordinary geopolymer matrices, play a role in crack prevention and toughening, and is conducive to promoting the construction and development of structures such as super high-rise buildings, large-span buildings, and offshore platforms.

The utility model provides a kind of small desktop type spinning draft device, including extrusion mechanism, cooling mechanism, oiling mechanism, draft mechanism and winding mechanism.Extrusion mechanism, cooling mechanism, oiling mechanism, draft mechanism and winding mechanism are connected in rack side, extrusion mechanism, cooling mechanism and oiling mechanism are set from top to bottom, and draft mechanism is set between winding mechanism and oiling mechanism.Cooling mechanism and oiling mechanism are provided with silk pressing mechanism, and oiling mechanism downside is equipped with guide mechanism.Extrusion mechanism extrudes tows, and tows are cooled after cooling mechanism, and then oiling is carried out in oiling mechanism, and after oiling, tows are reversed after guide mechanism, and then draft in draft mechanism, and after draft, tows are wound by winding mechanism.The utility model integrates extrusion, cooling, oiling, draft, winding and other multi-process, realize desktop miniaturization, small floor area, and adapt to small batch, multi-batch research and development production demand.

The present disclosure provides a polyamide 5X staple fiber, a preparation method and use thereof. The polyamide 5X staple fiber has a denier of 8.0-30.0D, a breaking strength of 2.0-6.0 cN / dtex, and an elongation at break of 30-100%. The polyamide 5X staple fiber has good mechanical properties and softness, and a blended wool yarn for manufacturing carpets with good mechanical properties, dyeability, and wear resistance can be obtained by using the polyamide 5X staple fiber.

An automatically adjustable and moving formwork system and an operation method thereof, comprising a formwork system, a steel frame system, a hydraulic system and an electrical system. The formwork system comprises an inner wall formwork, an outer wall formwork, a bottom formwork and an inner wall top plate formwork; the steel frame system comprises an inner wall steel frame system and an outer wall steel frame system, the inner wall formwork, the inner wall top plate formwork and the inner wall steel frame system constitute an inner wall formwork; the outer wall formwork and the outer wall steel frame system constitute an outer wall formwork, a casting cavity is formed between the inner wall formwork and the outer wall formwork, and the electrical system controls the demoulding and movement of the inner wall formwork. Good integrity. One-time pouring of concrete can reduce one construction joint, the structural integrity is better, and the concrete appearance quality is better; the through-wall pulling process is free, the structural wall has no through-wall holes, and the structural appearance and waterproof performance are better.

The utility model discloses a semi-direct-drive wind power main gear box and a four-stage transmission structure thereof. The four-stage transmission structure comprises a first-stage planetary mechanism, a second-stage planetary mechanism, a third-stage planetary mechanism, a four-stage planetary mechanism and an output shaft which are sequentially connected. A first-stage sun gear of the first-stage planetary mechanism is connected with a second-stage planet carrier of the second-stage planetary mechanism through a spline, a second-stage sun gear of the second-stage planetary mechanism is connected with a third-stage planet carrier of the third-stage planetary mechanism through a spline, and a third-stage sun gear of the third-stage planetary mechanism is connected with a fourth-stage planet carrier of the fourth-stage planetary mechanism through a spline. And a fourth-stage sun gear of the fourth-stage planetary mechanism is connected with the output shaft through a spline. According to the utility model, the torque density can be greatly improved, and the manufacturing cost is reduced.

The utility model discloses a doubly-fed wind power main gearbox and a five-stage transmission structure thereof. The five-stage transmission structure comprises a first-stage planetary mechanism, a second-stage planetary mechanism, a third-stage planetary mechanism, a fourth-stage planetary mechanism, a five-stage driving wheel and an output shaft which are sequentially connected. A first-stage sun gear of the first-stage planetary mechanism is connected with a second-stage planet carrier of the second-stage planetary mechanism through a spline, a second-stage sun gear of the second-stage planetary mechanism is connected with a third-stage planet carrier of the third-stage planetary mechanism through a spline, and a third-stage sun gear of the third-stage planetary mechanism is connected with a fourth-stage planet carrier of the fourth-stage planetary mechanism through a spline. A fourth-stage sun wheel of the fourth-stage planetary mechanism is connected with a fifth-stage driving wheel through a spline, and the fifth-stage driving wheel is meshed with an output shaft gear on an output shaft to form parallel shaft cylindrical gear transmission. According to the utility model, the torque density can be greatly improved, and the manufacturing cost is reduced.

The invention discloses a helical gear bending strength correction calculation method, which belongs to the technical field of gear strength, and takes a helical gear as a research object, an advanced precise helical gear three-dimensional bending finite element calculation model is introduced, and a helical gear end face correction coefficient and a helical gear longitudinal correction coefficient are added in the calculation process. Compared with a standard calculation method, the accurate bending strength safety coefficient of the helical gear can be quickly, simply and conveniently obtained. The method is particularly suitable for calculation of bending strength and fatigue life of high-speed and heavy-duty helical gears of wind power, rail transit, engineering machinery and the like, and provides powerful support for gear transmission design and manufacturing in related fields.