57results about How to "Reduce weight requirements" patented technology

The invention discloses a low-power electric arc heating propeller which is mainly applied to a power system for a micro satellite, and belongs to the field of electric propulsion. The low-power electric arc heating propeller aims to solve the problem that an existing micro satellite does not have a propelling system, and a set of complete electric propeller structure is designed according to an electric arc discharge principle between an anode and a cathode. The propeller structure mainly comprises a first cathode clamp seat 1, an upper insulator 2, a middle insulator 3, a lower insulator 4,an air inlet 5, the anode 6, a lower cover 7, a lower nozzle 8, an upper nozzle 9, the cathode 10 and an upper cover 11. According to the low-power electric arc heating propeller, when a voltage between the anode and the cathode achieves an arc-striking voltage, an introduced propellant is heated and expanded, under the action of the nozzles, supersonic gas is generated and ejected, and then reaction thrust is formed; and the low-power electric arc heating propeller has the advantages that integral structure is small in size and light in weight.

The invention discloses a solar-sail spacecraft structure provided with distributed satellites for traction. The solar-sail spacecraft structure provided with the distributed satellites for traction is composed of a central spacecraft, the distributed satellites and a square solar sail film. The distributed satellites are fixedly connected with the central spacecraft through connection and separation devices, and the distributed satellites are ejected to be separated from the central spacecraft through the connection and separation devices, so that the relative speed is obtained; and tied ropes are pulled to be controlled at the same time, so that the solar sail film is pulled out and unfolded. After the solar sail film is unfolded in place, a system is made to spin up through active acting force of the distributed satellites, and tensile force for keeping the solar sail film flat is generated. The multiple distributed satellites are used for providing traction force in the unfolding process, providing centrifugal force in the on-orbit flight process and serving as a distributed effective loading platform when a detection task is carried out. A thin-film solar cell and a liquid crystal reflection device are pasted onto the solar sail film; and electric energy converted by the solar cell is stored in a power source management system, serves as electric energy required for operation of satellite-borne equipment and is used for achieving posture control of the central spacecraft.

The invention relates to a wave energy generating system which comprises a wave energy converting device and a wave energy collecting device. The wave energy converting device comprises a supporting floating body, an electricity generating platform, a through hole and rotating wheels, wherein the electricity generating platform is connected over the supporting floating body in a fastened mode, the through hole is formed in the center of the electricity generating platform, the rotating wheels are symmetrically connected to the front wall and the rear wall of the through hole in a rotating mode, each rotating wheel is connected with an electricity generator through a gear, a gearbox and a rotating shaft in sequence, and an enclosure bulkhead is arranged at the position, at the peripheries of the electricity generators, of the electricity generating platform in a surrounding mode. The wave energy collecting device comprises a wave energy collecting floating body, a first outer frame and a crank, and further comprises a plurality of supporting columns, wherein the wave energy collecting floating body is arranged inside the supporting floating body, the first outer frame is connected to the upper end face of the wave energy collecting floating body in a fastened mode, one end of the crank is connected to the position, deviating from the center of the through hole, of the perpendicular corresponding point on the first outer frame in a rotating mode, the other end of the crank is connected to the middle of a horizontal shaft is a fastened mode, the two ends of the horizontal shaft are connected to the eccentric points of the rotating wheels in a rotating mode, the supporting columns are fastened in the peripheral direction of the wave energy collecting floating body, the other end of each supporting column perpendicularly penetrates through the position, at the periphery of the enclosure bulkhead, of the electricity generating platform, and then the other ends of the supporting columns are sequentially connected through a plurality of horizontal connecting rods.

A wind generating set with bottom driving comprises a wind power transmission portion, a mechanical driving portion, a speedup portion, a speed regulation generating portion, and a control portion. The power generated by rotation of blades under the effect of wind power is transmitted to a main shaft through a wheel hub. The main shaft is connected with two bevel gear sets for changing direction and speeding up twice, and an output shaft is a crankshaft which is formed by three connecting rod necks, the torsion moment generated by an impeller is transmitted to the crankshaft at the bottom of a tower cylinder through transmission steel pipes. The output shaft at the bottom of the tower cylinder connects a gear case to carry out speedup, six groups of speed regulation generating devices are introduced, each group comprises two sets of speed regulation generating devices, each of which comprises a sprocket wheel, a clutch, a buncher stepless gear, and a generating set. The present invention has the advantages of low cost, stabilized generating frequency, direct access, convenience in market popularization, and requires no expensive frequency converter, and therefore, has significant economic benefit and wide application prospects.

An agricultural harvester includes an auger assembly including an auger having an auger shaft defining an axis of rotation and a flighting carried by the auger shaft, the auger being configured to rotate the flighting in a sweeping path about the axis of rotation; and an auger trough placed adjacent to the auger to hold crop material in the sweeping path and having a bottom below the sweeping path. The auger trough has a first portion on a first side of the bottom and a second portion on a second side opposite the first side of the bottom, with the second portion of the auger trough having an end directed toward the first portion in a direction of the sweeping path.

The invention relates to a portable terminal, and in particular relates to a portable terminal with a touch screen. Aiming to the deficiencies of the traditional portable terminal, the invention provides portable terminal equipment. According to the portable terminal equipment provided by the invention, the touch screen with the functions of inputting and outputting is separated from other parts such as a processing unit, a memory unit and a battery unit, and data and the power are transferred through a data line or wireless connection. When the portable terminal equipment is used, the touch screen is needed to be held by hands only, and the other parts can be carried about.

The invention discloses a wheeled electric piling machine with light weight, low construction cost and high construction efficiency. A reasonable mechanical structural design is adopted, so that the weight of the piling machine is reduced to about a quarter of the weight of a walking type piling machine with the same construction capability. A wheeled walking device of the piling machine consists of a driving wheel and a load bearing wheel, wherein a motor is used for driving the piling machine to walk through a speed reducer and a chain (or a belt); a piling machine platform and an upright post have truss structures; the front end of the piling machine platform has a truss structure connected integrally with an upright post revolving shaft bracket; one face of the upright post is provided with a steel plate and an inclined strut behind the steel plate, and the other three faces have rectangular truss structures welded by using angle steel; and a revolving support is rotated by pushing and pulling an oil cylinder. The wheeled electric piling machine with light weight and flexible walking is very suitable for construction of CFG (Cement Flyash Gravel) piles, rammed ash piles, prefabricated pile conducted holes, deep mixing and the like, has construction efficiency far higher than that of the walking type piling machine, and is accordant with the environmental protection requirement; and energy is saved, waste gas is not emitted and noise is avoided.

The invention provides a mixer truck. The mixer truck comprises a truck body as well as a mixing drum and riding wheels which are mounted on the truck body, wherein the axis of the mixing drum is inclined relative to a horizontal plane; the mixing drum is supported by the riding wheels; an inclination angle of the axes of the riding wheels relative to the horizontal plane is smaller than an inclination angle of the axis of the mixing drum relative to the horizontal plane; the axes of the riding wheels can be intersected with the axis of the mixing drum, or the axes of the rilding wheels are intersected with an axial space of the mixing drum. According to the technical scheme provided by the invention, a component force of the truck body in the horizontal direction, which is formed by the gravities of the mixing drum and matrials in the mixing drum can be reduced even eliminated, and thus the stress borne by the truck body can be reduced, the service life of the truck body is prolonged, the volumes and the weights of relevant support parts of the truck body and the mixing drum can be reduced, the occupied spaces of the truck body and the relavant suport parts are reduced and the dead weight of the truck body is reduced.

The invention discloses a pile foundation static load compression resistance testing device, and relates to the technical field of building detection. The pile foundation static load compression resistance testing device comprises a main beam used for being arranged at the position above a to-be-tested pile foundation. A hydraulic cylinder is arranged at the lower end of the main beam. The main beam is further provided with two supporting assemblies used for supporting the main beam. The two supporting assemblies are located on the two sides of the to-be-tested pile foundation correspondingly.Each supporting assembly comprises a fixing part used for being inserted into the ground for fixation and a connecting part which is arranged above the corresponding fixing part and further connectedwith the main beam. Each fixing part comprises a round bar and a screw sheet which is spirally and fixedly connected to the outer side wall of the round bar in the axial direction of the round bar. Guiding parts are formed at the ends, far away from the connecting parts, of the fixing parts. Due to arrangement of the supporting assemblies, the fixing parts of the supporting assemblies and the ground are fixed to form large supporting force, the trouble of ground stabilization or filling replacement treatment is saved, and the pile foundation static load compression resistance testing device is made more convenient to use on the whole. In addition, the weight requirement for the main beam is greatly lowered, the number of heavy objects above is smaller, risks caused by heavy object hoisting are reduced and the overall testing safety is made better.

The invention provides a high-speed propeller type pile press machine, comprising a frame, a hoist, a guide post, a mounting bracket and a positioning hydraulic cylinder. The hoist is arranged on oneend of the frame; the guide post is arranged on the frame through a rotatable bearing; the mounting bracket capable of sliding along the guide post is attached to the guide post; the mounting bracketis provided with a positioning clamp with a clamp post body and a high speed propeller supplying pile pressing power; the positioning hydraulic cylinder is also arranged on the frame; and a piston rodof the positioning hydraulic cylinder is fixedly connected with the lateral surface of the guide post. The pile press machine has small volume and light weight, can adjust the orientation of the clamp and the pile body in multiple angles, realizes pressure arrangement in multiple angles and extensive spur piles, and reduces production cost.

The invention relates to a CT instrument. The CT instrument comprises a scanning frame, a rotary frame and a scanning assembly, wherein the scanning frame is U-shaped and comprises a bottom plate, a first installing plate and a second installing plate, the two ends of the rotary frame are rotatably connected with the first and second installing plates respectively, the first installing plate is provided with a first through hole which is opposite to and communicated with the rotary frame to allow a to-be-scanned object to enter the rotary frame passing through the first through hole, and the scanning assembly comprises an X-ray source and a detector which are arranged on the side wall of the rotary frame. According to the CT instrument, the U-shaped scanning frame is adopted to install therotary frame, the two ends of the rotary frame are rotatably connected with the first and second installing plates respectively, so that the force borne by the bottom plate is balanced in the rotation process of the rotary frame, the demand on the weight of the bottom plate by balanced force bearing is reduced under the same stability conditions compared with the deflected force bearing of the base of an L-shaped scanning frame, the weight of the CT instrument can be reduced, a CT instrument with a smaller weight is obtained, and therefore the CT instrument with the smaller weight can be applied to a vehicle.

The invention relates to a universal balance weight for a railway tank car. The balance weight is characterized by comprising an inner balance weight and an outer balance weight which can be installed in a tank car manhole, wherein the outer balance weight is provided with a connecting part which can movably connect and fix the balance weight on the tank car. By adopting a structure combining the inner balance weight and the outer balance weight, the weight requirement on a required balance weight can be reduced in use, and therefore, the balance weight can be made of common steel and the cost is reduced greatly. In the invention, since the balance weight is fixed on the tank car in a movable connected way, the balance weight rotates together with the tank car without impact; and meanwhile, the universal balance weight is also provided with a locking device used for further indenting the inner balance weight and the outer balance weight, thereby greatly improving the use safety of the universal balance weight. In addition, the universal balance weight is also provided with adjustable balance weights, the weight of the universal balance weight can be increased or decreased easily by increasing or reducing the adjustable balance weights according to field conditions and the requirement of different unbalanced weights.

The invention discloses a novel elevator traction system, and relates to the field of elevators. The novel elevator traction system comprises a traction wheel, and a traction rope or a traction belt wound on the traction wheel. The novel elevator traction system further comprises at least one pressure loading module arranged above the traction rope or the traction belt; the pressure loading modulecomprises an arc support frame, and an adjustable pressure plate module mounted on the support frame; the adjustable pressure plate module comprises an arc pressing plate, multiple mounting rods andmultiple compressed elastic elements; the lower ends of the multiple mounting rods are fixedly connected with the upper surface of the pressing plate; the upper ends of the multiple mounting rods aremounted on the support frame; the lower ends of the elastic elements abut against the upper surface of the pressing plate; the upper ends of the elastic elements abut against the support frame; the lower surface of the pressing plate is bonded with the traction rope or the traction belt to load pressure pointed to the axis of the traction wheel; and the upper ends of the multiple mounting rods canbe telescopically adjusted in the radial direction of the support frame to adjust the pressure loaded by the pressing plate. The novel elevator traction system has no need of frequent maintenance andreplacement, and saves the maintenance cost.

The invention relates to an electric wheel type pile driver which has light weight, low cost and high construction efficiency. The weight of the electric wheel type pile driver is reduced to about a quarter of the weight of a walking type pile driver which has the same construction capability by adopting reasonable mechanical structure design. The electric wheel type pile driver is characterized in that a wheel type traveling device comprises a plurality of groups of left and right independent rigid driving wheels and follower wheels capable of follow-up turning, wherein the left and right driving wheels are respectively independent, the driving wheels positioned at a same side are connected through chains (or belts) to synchronously drive the pile driver to walk so that the pile driver is similar to a crawler-type pile driver without installing a crawler; an upright column is in a rectangular truss structure with one surface provided with a steel plate and inclined struts at the rear of the steel plate and other three surfaces welded by angle steels; and a roller wheel type pivoting support is pushed and pulled to rotate by an oil cylinder. The electric wheel type pile driver which has light weight and flexible traveling is quite suitable for the construction of CFG (Cement Flyash Gravel) piles, rammed bulb slag piles, preformed pile lead holes, deep-layer mixing, and the like, has construction efficiency much higher that of the walking type pile driver and saves the energy without exhausting waste gas or making noises, thereby meeting the requirements of environmental protection.

The invention provides an aircraft. The aircraft comprises aircraft arms, protective frames and power units, wherein the protective frames are mounted on an aircraft body through mounting bases; and the protective frames have the advantages of being high in rigidity, low in mass, high in crash-resistance and capable of reducing damage of rigid impact to the power units and the aircraft body. According to the aircraft disclosed by the invention, the defects that a conventional aircraft protective cover is low in strength, easy in deformation, short in service life and low in interchangeability, and rigid impact can easily damage the power units and the aircraft body, are overcome.

The invention discloses a solid-liquid hybrid spring energy storage device, and belongs to the technical field of aviation structure design. The solid-liquid hybrid spring energy storage device is composed of a hydraulic cylinder and a solid spring, wherein the hydraulic cylinder comprises a main hydraulic cylinder and shunting hydraulic cylinders, the two kind of hydraulic cylinders are connectedthrough oil pipes, the main hydraulic cylinder is fixed at a rotating shaft of a folding wing, the shunting hydraulic cylinders are fixed in the part where is spacious in space and poor in influenceof the weight on the performance of an aircraft so as to realize energy storage, a plurality of the shunting hydraulic cylinders can be arranged, and the volume of the liquid in the shunting hydrauliccylinders is equal to the volume of the liquid discharged from the main hydraulic cylinder. According to the device, the area ratio of the main hydraulic cylinder and the area ratio of the shunting hydraulic cylinders is designed, the number of the shunting hydraulic cylinders is designed, so that the proportion of force and displacement can be redistributed, and the requirements of the working load, displacement stroke, the rigidity and the like of the spring can be met.