682results about How to "Reduce your weight" patented technology

The invention provides a steel plate having low-temperature toughness, high tensile strength and low yield ratio, as well as a method for making the same. By combining simple combination design of alloying elements with optimized TMCP process, the method successfully solves the problem that low-temperature impact toughness and low yield ratio are in mutual conflict and difficult to reconcile in composition design and process design, which reduces the amount of steel material, saves cost, lightens the dead weight of a steel structure, increases stability and safety, and more importantly, improves the safety, stability and seismic damage resistance of the steel structure. The steel plate can be widely applied to large-scale high-rise building structures, bridge structures, offshore oil production platform structures, low temperature pressure vessels and large-scale ship structures.

The invention discloses a cutting-stirring friction welding composite processing device for a floating double-shaft-shoulder double-stirring needle and a manufacture method thereof, and particularly relates to a combined or composite processing device capable of simultaneously carrying out milling or cutting processing and stirring friction welding processing and a method thereof. The cutting-stirring friction welding composite processing device for the floating double-shaft-shoulder double-stirring needle integrates a cutting system or a milling system, a stirring friction welding system, a forced cooling system, a gas protection system, a temperature sensing system, a pressure induction system, a milling liquid supply system and a sensing-free system. The cutting-stirring friction welding composite processing device has functions of temperature control, gas protection, pressure detection, cooling liquid protection, milling head replacing and floating double-shaft-shoulder self-supporting stirring friction welding. The method for carrying out cutting-stirring friction welding composite processing on workpieces can meet strength requirements of mechanical processing of ferrous light metal materials, carbon steel materials and alloy steel materials. The cutting-stirring friction welding composite processing device for a floating double-shaft-shoulder double-stirring needle and the manufacture method of the cutting-stirring friction welding composite processing device reduce manufacture procedures, save processing cost, have the advantages of being high in efficiency, excellent in quality, high in stability and saving in energy, break through limitation of conventional machining technology, form a new method and a new thought for machinery processing, and have wide application prospects in industries of heating, air conditioners, ice manufacture, freshness keeping, medicine preparation, construction, aquatic products and foods.

The invention relates to a modality switching underwater robot and a control method thereof. The modality switching underwater robot comprises a water surface control system and an underwater control system, wherein the underwater control system comprises an underwater sensing device, an underwater controller and an underwater robot, and the underwater robot comprises a carrier module, a switching module, a trolley module and a video collecting module. According to the control method of the modality switching underwater robot, the underwater controller is adopted to enable video information collected by the video collecting module and sensing information sensed by the underwater sensing device to be uploaded to the water surface control system through umbilical cables and receive control signals sent out by the water surface control system at the same time so as to achieve control over the swimming movement and wall climbing cleaning of the underwater robot. According to the modality switching underwater robot and the control method of the modality switching underwater robot, the self-weight, the size, the manufacturing cost, the processing difficulty, the energy consumption of a power supply system and the like are reduced to the maximum degree, and the modality switching underwater robot has various functions of swimming, sorption, crawling, cleaning and underwater monitoring and is high in practicability and wide in application range.

The invention discloses a reconfigurable wall climbing robot and a collaborative obstacle-detouring method thereof. The reconfigurable wall climbing robot comprises an adaptive seal skirt, a sealing lining, a centrifugal pump, a centrifugal pump motor, a centrifugal pump motor driver, a robot body, and the like, wherein the seal skirt is vertically fixed on the periphery of the lower bottom surface of the robot body; the robot body is provided with a through hole, the air inlet of the centrifugal pump is corresponding to the through hole of the robot body and fixedly arranged on the robot body, and an output shaft of the centrifugal pump motor is connected with the centrifugal pump; and the sealing lining is arranged on the lower bottom surface of the robot body and located between the through hole and the seal skirt. In the invention, each reconfigurable wall climbing robot is an independent individual, and can independently complete tasks such as reconnaissance and the like under the condition of no barrier; and when a certain wall climbing robot is required to detour an obstacle, two independent reconfigurable wall climbing robots can collaboratively complete an obstacle-detouring task through being combined to be a whole.

The invention discloses a multi-ground-clearance self-steering intelligent sprayer and a control method. The sprayer comprises a vehicle platform, two self-steering traveling mechanisms, a controllable lifting spraying device, a gasoline power generation and supply device and a control device, and each self-steering traveling mechanism is connected with the vehicle platform by adopting a rotation structure; the controllable lifting spraying device is fixed at the tail of the vehicle platform and comprises a sprayer lifting mechanism, a spraying rod device and a drug mixing device, the spraying rod device is arranged on the sprayer lifting mechanism and connected with the drug mixing device, and a spraying rod can move up and down along with traction of the sprayer lifting mechanism; the drug mixing device is fixed in the middle of the vehicle platform and provides drug to spraying equipment for spraying, the gasoline power generation and supply device is fixed on the front portion of the vehicle platform and serves as a stable voltage power source of the equipment, and the control device is connected with driving equipment, a control motor and multiple sensors. Four hub motors are controlled by the control device to realize self-steering of wheels at differential speeds, and the sprayer is high in control accuracy and small in turning radius.

The invention discloses a multi-rotor plant protection unmanned aerial vehicle, belonging to the technical field of unmanned aerial vehicles. The multi-rotor plant protection unmanned aerial vehicle comprises an undercarriage, a body, a rack, arms, a main rotor, an auxiliary rotor, a spray system and a control system, wherein the body is arranged above the undercarriage and connected with the undercarriage; the rack is arranged above the body and connected with the body; the arms are mounted on the rack; even number of arms are provided and symmetrically distributed on the rack; an engine is arranged at the upper part of the rack; the main rotor is connected with an output shaft of the engine; an motor is arranged on each arm; an output shaft of each motor is connected with the corresponding auxiliary rotor; a spoiler is arranged on each arm; the spoilers are used for offsetting the anti-torque effect generated by the rotation of the main rotor; the control system, the engine and the motors are all connected with a power supply; and the control system controls the working states of the main rotor, the auxiliary rotors and the spray system. In the invention, gasoline-electric hybrid power is adopted, the whole structure is simplified, the structure is simple, and the time of endurance is long.

The invention provides ultrahigh-performance concrete containing basalt coarse aggregate and a preparation method thereof. The concrete includes a cementing material, an aggregate, water, a polycarboxylate high-effective water reducer, and steel fibers. The concrete is prepared by mixing the raw materials in specific sequence and performing nature maintenance. In the invention, basalt gravel, as a coarse aggregate, is blended with the ultrahigh-performance concrete, so that shrinkage of the ultrahigh-performance concrete is effectively inhibited; when reduction range of strength is small, production cost of the ultrahigh-performance concrete is greatly reduced. In addition, the maintenance method is simple, so that the preparation method has convenience in practical engineering application.

The invention relates to a belt-transmission four-rotor-wing aircraft. The belt-transmission four-rotor-wing aircraft is provided with an engine, a main rack, a power distribution and transmission system and a flight control system, wherein a plurality of brackets are outwards extended from the power distribution and transmission system and are uniformly spaced to form cross shapes and the like, and rotor wing assemblies with changeable propeller pitches are arranged at the front ends of the brackets and comprise rotor wing rotation driving components and rotor wing propeller pitch changing components. According to the belt-transmission four-rotor-wing aircraft, four shafts and four rotor wings are driven by the engine, and the size of rising power of all the shafts is changed through changing the propeller pitches of all the rotor wings, so as to realize the change of the flight attitude of the aircraft; the fuel-driven engine is adopted, so that the effective payload is increased, and the flight time is prolonged, thus the gear-transmission four-rotor-wing aircraft is particularly applicable to long-time and long-distance operation.

The invention relates to a hydrogenation catalyst carrier for coal liquefaction oil, a catalyst as well as a preparation method and application of the hydrogenation catalyst carrier and belongs to the field of hydrogenation catalysts. The carrier comprises the following components (counted by 100% of total weight of the carrier): 5-60wt% of carbon nanotube, 32-90wt% of aluminum oxide, 0-8wt% of silicon dioxide and 0-8wt% of titanium dioxide. When the hydrogenation catalyst carrier for the coal liquefaction oil is used for carrying out a hydrorefining reaction for directly liquefying low-grade oil by coal, after the reaction is continuously carried out for 48 hours, the desulfurization rate can reach 99.7%, the denitrification rate can reach 95.1%, and the deoxygenation rate can reach 99.5%; after the reaction is continuously carried out for 168 hours, the desulfurization rate can reach 98.9%, the denitrification rate can reach 94.6%, and the deoxygenation rate can reach 98.6%; the hydrogenation catalyst carrier has high catalytic activity and stability.

The invention discloses a preparation method for a thermoplastic-polyimide-based compound material for a bearing retainer. In the preparation method, thermoplastic polyimide is used as a base material, reinforcement and modification materials are added into the thermoplastic polyimide and comprise aramid fiber pulp fibers, graphite fluoride and teflon, wherein the aramid fiber pulp fibers are subjected to reflux cleaning, the cleaned aramid fiber pulp fibers, the thermoplastic polyimide and the graphite fluoride are subjected to vacuum drying, and then are synthesized into the thermoplastic-polyimide-based compound material; and the thermoplastic-polyimide-based compound material is hot-pressed on a hot press by using a retainer mould so as to form a bearing retainer tubular blank. The thermoplastic-polyimide-based compound material is low in density, small in friction coefficients and low in abrasion loss, and distortion temperature is greater than 270 DEG C; and the bearing retainertubular blank which is obtained through hot pressing is light, reduces the weight of a whole bearing, and improves the rotation speed and operation stability of the bearing, and obviously improves efficiency of a main machine.

The invention discloses a folding mechanism for changing wingspan of wings. The folding mechanism is a rigid foldable structure which is used for changing the single degree of freedom and the large folding-expanding ratio of the wingspan of the wings based on a Sarrus mechanism. The single degree of freedom guarantees that the entire wings only need a driving motor, complexity caused by coordination and cooperation of a plurality of motors is avoided, besides, the self weight of the folded wings is greatly reduced, and the effective load of an aircraft is increased; the large folding-expanding ratio guarantees that the respects including the speed, the mobility, the loading capacity, the range and the like of the aircraft can be adjusted according to task requirements. Through the adoption of the mechanism, the wingspan of the wings is changed, the diversified functions of the aircraft can be realized, the performance indexes of the aircraft can be regulated, and enormous convenience is brought for the storage and the transportation of the aircraft; the entire mechanism only has one degree of freedom, so that the motion control is simple; the folding mechanism has the advantages of being simple to produce and process, convenient in motion control, high in reliability, high in precision and the like, and has important significance and broad application prospects in the field of variable geometry aircrafts.

A method and arrangement for reducing the weight and optimizing the longitudinal strength of a water-craft (1), which is especially suitable for transportation of liquefied natural gas (LNG) or other corresponding mediums and comprises a hull (2), which has a deck (3) extending over at least the main part of the water-craft (1) and a number of substantially spherical cargo tanks (4) arranged successively in the longitudinal direction (A) of the water-craft (1) and a deckhouse (5), which extend substantially above the said deck (3). The hull (2) of the water-craft (1) is provided with a continuous protective casing structure (6) known as such and which is arranged on top of the cargo tanks (4). The said deck (3) of the water-craft is arranged on the hull (2) so that the proportion of its height measured from the bottom of the water-craft to the height of the uppermost continuous portion of the protective casing structure (6) on top of the cargo tanks (4) is at most 0.55, preferably at most 0.5. In addition said protective casing structure (6) is fixed to said deck (3) and/or other structures (7) supported to the hull (2) and is dimensioned together with the other parts of the hull (2) so that together they constitute an essential part of the overall strength of the water-craft.

Provided is a process for preparing a plant fiber composite wall plate, belonging to wall material field. The invention resolves the shortages that the raw material of the existing architectural wall material is large in consumption, the manufacture cost is high and the distribution of the raw material is non-uniform. The process steps of the invention are that crop straw is cleaned and cut into pieces and is ground by a fiber re-chipper, and then is dried after dust and big lump material are screened. The prepared raw material is sent into a glue blend machine and is added with adhesive agent of 10-16%. After being uniformly stirred, the raw material and the added adhesive agent are taken out, added with fire retarding agent and paved, and then are cut in standard size after being pre-pressed, hot-press-molded and cooled. The plate in standard size is combined with polystyrene plates via different layers and thicknesses, the surfaces thereof are stuck with melamine fireproof plates, and then the plant fiber composite wall plate is formed via the combination. The product obtained by the process has the advantages of low density, light weight, perfect insulation, simple technology, large raw material source, low manufacture cost, waste utilization and environment protection. The invention can be used to produce building separating walls, framed wood structural buildings, mobile movable dwellings, and buildings in tourist spots and the like.

The present invention discloses composite grate plate for automatic mill. The composite grate plate includes grate plate with conic discharge holes for sieving ground material, and netted support covered with elastic antiwear layer. The present invention has no waste of worn expensive material, no iron dust caused by wearing steel material, and high quality of ground quartzite.

The invention discloses a special sling for the hoisting extra-large structural modules for nuclear power plants, which belongs to the field of mechanical engineering. The special sling comprises a distributor, multiple steel tube beams and multiple connecting nodes, wherein the steel tube beams are connected in pairs by the connecting nodes so as to form balancing beam frames, and the balancing beam frames are respectively connected with the distributor and a hoisting module; and the length of an upper hoist cable can be adjusted according to the position of the center of gravity of a lower hoisting module, so that the distributor is aligned at the center of gravity of the lower hoisting module in the up-and-down direction. According to the special sling, a hydraulic oil cylinder is adopted to be connected with a hanging bracket and hoisted objects, the appearance of the hydraulic oil cylinder is exquisite, the self weight of the hydraulic oil cylinder is reduced, but the hydraulic oil cylinder can bear a large force, and the hydraulic oil cylinder is made of 45# high-quality carbon steel, so that the hydraulic oil cylinder has the characteristics of fatigue resistance, impact resistance, non-magnetism, and the like; and the working temperature of the hydraulic oil cylinder can be minus 60-200 DEG C, so that after running for 6000 hours, the hydraulic oil cylinder with super-long service life has no fault. Therefore, the hanging bracket and the hoisted objects connected simply and conveniently, errors are easy to control, and the service life is long.

The invention discloses an auxiliary face compensation method for a large beam-forming double-reflection-face antenna based on electromechanical coupling. The method includes the steps that firstly, an antenna finite element model is established; secondly, a piecewise fitting face of an antenna beam-forming main reflection face is acquired; thirdly, according to loaded temperature loads, node coordinates of the deformed antenna main reflection face are calculated; fourthly, the electrical property of the deformed antenna is calculated; fifthly, the optical matching face of the deformed antenna main reflection face is acquired; sixthly, a focal point is taken from a focal axis corresponding to the optimal matching face, and the position of the focal point corresponding to the optical matching face serves as an optimal feed source position by calculating the electrical property of the antenna; seventhly, the auxiliary reflection face position adjusting amount for compensating for the electrical property of the antenna is calculated, and the electrical property of the antenna after compensation is calculated; eighthly, whether the increase amount before and after the auxiliary face position is adjusted meets requirements or not is judged, and the auxiliary face position is adjusted till the requirements are met. The reflection face antenna quantitative analysis and modeling processes are simplified, the calculation process is improved, and the weight and the manufacturing cost of the antenna are reduced.

The invention discloses cutting-stirring friction-welding combined machining equipment and a manufacturing method thereof. The cutting-stirring friction-welding combined machining equipment integrates a milling system or a cutting system, a stirring friction-welding system, a forced cooling system, a gas protection system, a temperature sensing system, a pressure sensing system, a milling liquid supply system and a non-sensing system. The invention provides a united or combined machining device which can carry out milling or cutting and stirring friction-welding in parallel simultaneously and a method thereof. The cutting-stirring friction-welding combined machining equipment has the functions of temperature control, gas protection, pressure detection, cooling liquid production, milling head replacement and dual-shaft shoulder self-supporting. According to the manufacturing method of the cutting-stirring friction-welding combined machining equipment, the manufacturing processes are reduced and the machining cost is saved. The limitation of the conventional mechanical machining technology is broken through, and a new method and a new idea about the mechanical manufacturing and machining are formed. The cutting-stirring friction-welding combined machining equipment and the manufacturing method in the invention have wide engineering applications to the heating industry, the air conditioning industry, the ice making industry, the freshness retaining industry, the pharmacy industry, the construction industry, the aquatic product industry and the food industry.

The invention belongs to the field of materials, and in particular relates to a thermoplastic fiber-reinforced composite material, a preparation method and application of the material, and a method for preparing a case shell using the material as a raw material. The thermoplastic fiber reinforced composite material of the present invention includes thermoplastic fiber fabric and thermoplastic resin. Using the thermoplastic fiber-reinforced prepreg/sheet provided by the present invention to prepare the casing of a case can greatly improve the strength and impact resistance of the case compared with the traditional hard case. The thickness of the shell is reduced to reduce the weight of the luggage itself. Compared with the traditional hard box, it can reduce the weight by about 40%, and greatly improves the impact resistance of the luggage, reducing the damage of the luggage during use and consignment. Compared with traditional soft cases, it solves the shortcomings of soft cases and bags that are not pressure-resistant and waterproof, and leather cases are easy to be scratched and damaged, and are difficult to repair or have high repair costs.

The invention discloses a wearable air conditioning suit based on a bionic honeycomb structure. A throttling device of the wearable air conditioning suit is respectively connected with a condenser and an evaporator; a miniature compressor is respectively connected with the condenser and the evaporator; the evaporator is also connected with a miniature water pump and a honeycomb structural pipeline, and the miniature water pump is connected with the honeycomb structural pipeline through a small water storage tank; a lithium ion battery pack is connected with a controller; the throttling device adopts a capillary pipe with the diameter of 0.5-0.8mm; a wearing assembly is divided into a plurality of layers; a comfortable layer, a breathable layer, a heat insulation layer and a surface layer are sequentially arranged from inside to outside; the evaporator adopts a plate heat exchanger; a pipe network of a water cooling system is distributed in a net shape by using a honeycomb structure; the condenser adopts a parallel flow heat exchanger; and a small fan is parallel to the parallel flow heat exchanger. By using the wearable air conditioning suit, the temperature of a microenvironment in the suit is maintained within the range of +/-1.5 DEG C based on the temperature set by a user, and therefore, a comfortable microenvironment inside the suit is provided for a human body.

The invention discloses a side wall of a body of an ore open wagon for a railway. The side wall mainly consists of an upper side beam, a built-in pillar, a built-in side pillar and a side wall plate. The upper side beam is integrally pressed by an outer turnup plate, an upper plane plate, an inner bevel plate and a lower vertical plate which are made of stainless steel. The inner bevel plate and the lower vertical plate are welded with opening edges of the built-in pillar and the built-in side pillar in corresponding positions. The side wall plate is integrally pressed by a top overlapping plate, an upper inner inclined plate, a lower outer inclined plate, an arc-shaped transitional plate and a bottom horizontal plate which are made of stainless steel. Both ends of the plates are welded with the opening edges of the built-in pillar and the built-in side pillar in corresponding positions. The top overlapping plate is welded with the bottom end of the lower vertical plate, and the bottom horizontal plate is welded with floor on the chassis. The side wall provided by the invention is simple in structure, light in self weight, high in strength and rigidity and good in integral assembly process, and the conveying capacity can be effectively improved, and the requirement of light weight and heavy load of a large axle load open wagon for the railway can be met.

The invention relates to a torque-enhanced type switched reluctance motor. A stator of the motor is composed of even numbers of double-salient-pole iron core assemblies which are magnetically isolated to each other, provided with magnet exciting coils and uniformly and annularly arranged along the inner wall of a shell of the motor, and double salient poles of each assembly are axially arranged; a rotor of the motor is composed of even numbers of stripped double-salient-pole iron cores which are uniformly arranged along the radial direction of a rotating shaft, and double salient poles at two ends of each stripped double-salient-pole iron core are axially arranged; the double magnetic salient poles of each assembly on the stator and the salient poles at two ends of each stripped double-salient-pole iron core on the rotor are arranged oppositely and provided with gaps interbetween; and the magnet exciting coils of the two stator assemblies on axisymmetric positions are connected in series or parallel to be used as a phase to be connected to an excitation control power supply. A motor with a similar structure is provided through replacing the stripped double-salient-pole iron cores on the rotor with the double-salient-pole iron core assemblies provided with the magnet exciting coils. The motor provided by the invention is low in magnetic loss, high in efficiency, low in impact chatter, stable in rotation and high in control precision.

The invention discloses low-temperature steel for large-line energy welding with a yield ratio being not more than 0.85. The low-temperature steel comprises the following components in percentage by weight: 0.04%-0.07% of C, not more than 0.20% of Si, 0.8%-1.2% of Mn, not more than 0.013% of P, not more than 0.003% of S, 0.35%-0.85% of Ni, 0.10%-0.30% of Cr, 0.008%-0.02% of Ti, 0.01%-0.02% of Nb and not more than 0.005% of N, wherein Pcm is equal to C+Si/30+(Mn+Cr+Cu)/20+Ni/60+Mo/15+V/10+5B being not more than 0.18%, Nb is not more than 0.358C, Ti/n is between 2.5 and 3.5. The low-temperature steel is prepared from the following steps: continuously casting the components into blank after desulphurization smelting; heating up the casting blanks; descaling by high-pressure water; rolling step by step; relaxing for 30-90 seconds; cooling; air cooling to the room temperature; tempering; and air-cooling to the room temperature. The yield ratio is not more than 0.85, and the impact work KV2 is not less than 60 J at -80 DEG C, and the impact work (Heat Affected Zone) is not less than 27J at -80 DEG C. The low-temperature steel has good low-temperature toughness and weldability.

The invention discloses a mechanical arm joint, comprising: a motor end input and braking part, a motor drive part, a reducer part, and a joint output part arranged in sequence along the axial direction of the motor of the joint, wherein the The input and braking part of the motor end includes: a motor end brake sleeved on the hollow shaft of the motor at the input end side of the split type hollow torque motor, and a motor end encoder sleeved outside the motor end brake , and a first shell accommodating the motor end brake and the motor end encoder therein, and the connector is respectively connected with the motor end brake and the motor end encoder.