162results about How to "Low structural strength requirement" patented technology

The invention relates to a device for bridge inspection, in particular a novel self-walking intelligent bridge inspection vehicle which comprises a lower carriage (8) and an upper carriage (10) connected with the lower carriage through a pivoting support (9), wherein the upper carriage (10) is connected with a vertical arm oil cylinder (16) at the upper end part of a vertical arm (17) through a quadrangular connecting and lifting mechanism, a rotating device (27) is arranged at the lower end part of the vertical arm (17) and connected with a horizontal working arm that extents to the bottom of a bridge, photographing devices are arranged on the rotating device (27) and the horizontal working arm, a frame oil cylinder (11) is arranged between the upper carriage (10) and the quadrangular connecting and lifting mechanism, and a connecting oil cylinder (19) is arranged between the rotating device (27) and a first telescopic arm (22). As the device is unmanned, the requirements to the structural strength of a cantilever crane are relatively smaller, thereby the volume and the weight of the bridge inspection vehicle are reduced, and the flexibility is enhanced; and meanwhile, an intelligent video device is adopted to store inspection videos, and the more specific analysis can be carried out conveniently, thereby the inspection result is more objective, and the inspection efficiency is higher.

The invention aims at providing a floating-type tidal current energy power station, which comprises a transverse floating body, a longitudinal floating body, tidal current power generators and lifting mechanisms. The longitudinal floating body and the transverse floating body are orthogonally arranged in the shape of a Chinese character 'zhong'. The transverse floating body is overlapped on the longitudinal floating body. An installation and maintenance shaft is arranged on the transverse floating body. Anchoring chains are installed at the two ends of the longitudinal floating body. Each lifting mechanism comprises a lifting column, power boxes and a limiting stopper, wherein the power boxes are installed on the two sides of the installation and maintenance shaft, the limiting stopper is installed between the two power boxes and is connected with the two power boxes and the lifting column is sheathed in the limiting stopper. Each tidal current power generator comprises a cabin shell; and a power generator, a transmission shaft, a speed increaser, blades, a hub and a fairing cap which are installed in the cabin shell and are sequentially connected. The tidal current power generators are respectively connected with the lifting columns. By adopting a power station structure which is of the shape of the Chinese character 'zhong', the tidal current energy power station is guaranteed to have better stability, and the power generation performance of the tidal current power generators is improved; and the structure is simple and the production cost is low.

The invention relates to an ultrahigh-voltage oil-SF6 sleeve test device which overcomes the shortcomings and defects of single test ability, low test voltage grade and vertical arrangement of sleeve samples of the existing oil-SF6 sleeve test device. The device comprises a test oil tank, a GIS (Gas Insulated Switchgear) bus tube, a GIS sleeve, an oil-SF6 sleeve, an oil conservator, a transition plate, a support base and accessories, and is characterized in that: the oil-SF6 sleeve sample is horizontally mounted. The insulating property of the device can meet the insulation requirement of the sleeve test device with a grade between 500KV and 1,100KV; the actual operation conditions of the oil-SF6 sleeve can be simulated; the sleeve mounting height of the whole test device is reduced, thereby being favorable for the transportation and disassembly / assembly; and meanwhile, the requirements for the structural strength and safety of the test device are reduced, and the requirement for the height of the hall building of the test environment is reduced.

The invention relates to a downhole continuous wave mud pulse generator which comprises a continuous wave pulse generating assembly and a driving assembly for driving the continuous wave pulse generating assembly to work. The continuous wave pulse generating assembly comprises a shell, and a stator and a rotor which are sequentially arranged inside the shell from top to bottom; the rotor can rotate axially around the axial direction of the shell; mud overflowing holes are arranged in the stator and the rotor along the axial direction of the shell; an end cap is arranged at the upper end of the shell; a through hole for the mud to run through is arranged in the end cap; the mud overflowing hole in the stator is communicated with the through hole in the end cap; the overflowing hole in the rotor is communicated with an opening at the side face of the shell; and the driving assembly drives the rotor to rotate. The downhole continuous wave mud pulse generator provided by the invention is reliable to work and can be used for generating mud pulse signals in a wireless LWD (Logging While Drilling) system.

The table positioning device features in the elastic press board as the drilling surface on the plate horizontally, with the center of the press board providing drilling head going through the hole, support machine of the plate made of the table and the alight rolling wheel support table, with the fixed support table having main support plate along X axis, auxiliary support along Y axis at both sides of the main support plate, with adjacent assisted support plate forming into ÀÃ perforated fixed support table with horizontal and isolation device, with the alight rolling support table made of a set of universal rolling wheel supported by the support frame, support frame and alight device in up and down working status relative to the fixed support table for each wheel edge formed rolling surface face. It can solve the through and broken issue of drilling thin plate, being able to drill 7mm blind hole on the 9mm ceramic plate.

The invention discloses a rear crossbeam and main girder connecting structure for a self-propelled movable framework. The rear crossbeam and main girder connecting structure comprises a triaxial rotating mechanism; the triaxial rotating mechanism comprises transverse moving frames, hanging rods, lifting lugs, transverse moving bases and transverse moving oil cylinders, wherein the lower end of each transverse moving frame is hinged to the upper end of the corresponding hanging rod through a transverse pin shaft; each transverse pin shaft is arranged in a transverse direction; the lower end of each hanging rod is hinged to the upper end of the corresponding lifting lug through a longitudinal pin shaft; each longitudinal pin shaft is arranged in a longitudinal direction; two ends of each transverse moving oil cylinder are respectively hinged to the corresponding transverse moving frame and the corresponding transverse moving base; each transverse moving frame and the corresponding transverse moving base are respectively suspended on a rear crossbeam of the self-propelled movable formwork; each transverse moving base is connected with a rear crossbeam of the self-propelled moving formwork; each transverse moving frame is positioned in the inner side of the corresponding transverse moving base; the lower part of each lifting lug extends to a main girder of the self-propelled moving formwork, and the main girder of the self-propelled moving formwork can rotate around the lifting lugs; the lifting lugs are vertically arranged. According to the rear crossbeam and main girder connecting structure disclosed by the invention, the stress concentration phenomenon generated when local transverse and longitudinal bending moments at the connecting part between the rear crossbeam and the main girder are relatively large is avoided, and the safety of small-radius horizontal curve bridge construction is ensured.

The invention relates to a dual cold sources airplane ground energy-conserving and environment-protective air-conditioning system, which solves the problems of high energy consumption, parking apron occupation and high operating cost in prior airplane ground air-conditioning unit. The system consists of a first air processing system and a second air processing system in compression refrigeration type; wherein, the first air processing system takes water supplied by a central air conditioner as heat transferring medium; the second air processing system in compression refrigeration type takes refrigerant as heat transferring medium. In the first processing system, a water-through heat exchanger (7) is injected with water from the central air conditioner of airport lounges by a pump (8) to carry out heat exchange with air from airport lounges or gallery bridge channel; the cooled air is transmitted into an engine room parked in the airport driven by a centrifugal fan (6) through a evaporator, an air outlet hood (1) and a underground passage; water after heat exchange by the water-through heat exchanger (7) is directly or through a double pipes heat exchanger to discharge into a water-storing system of the central air conditioner in airport lounges. The first processing system and the second processing system are located in the airport lounges. An underground passage system comprises an air supply duct with an insulating layer (22) buried under landing field outdoor, one end of the air supply duct is connected with the air supply tube (1), and the other end thereof is connected with a tube (23).

An non-yielding three-dimensional parking platform comprises a ground monorail fixedly connected with the lower foundation, a moving drive mechanism, a moving case driven by the moving drive mechanism to move on the rail, a rotation drive mechanism, a rotation column driven by the rotation drive mechanism, a lifting power mechanism, a vehicle platform plate connected onto the rotation column, a support column on the other side of the vehicle platform plate and a traveling wheel traveling on the ground. The support column and the rotation column are disposed on two sides of the vehicle platform plate and connected through a beam, a transmission mechanism driving the vehicle platform plate to rise and fall synchronously with the rotation column is mounted on the support column, and a turning support arm and a turning wheel are fixedly connected with the rotation column. The non-yielding three-dimensional parking platform is a double-column supported vehicle platform plate, stress exerted on the vehicle platform plate is uniform, requirements for foundation structure strength are reduced, costs for product manufacture and mounting are reduced, and the whole parking platform is firm and durable in structure.

The invention relates to a waterproof structure which comprises a shell and a cover, wherein the cover is assembled on the shell. The shell is provided with a groove. The cover comprises a protruding rib and a soft material structure, wherein the protruding rib is coated with the soft material structure, and the protruding rib and the soft material structure are integrally formed. The soft material structure is in interference fit with the groove. Due to the arrangement of the protruding rib, when the soft material structure is in interference fit with the groove, a support of the protruding rib can make the deformation of the soft material be reliable and achieve a good waterproof effect. Meanwhile, due to the fact that the soft material structure and the cover are integrally formed, additional assembly waterproof soft rubber is not needed, the assembly deviation of the waterproof soft rubber does not need to be taken into consideration for the arrangement of magnitude of interference, and therefore the good waterproof effect is achieved through a small amount of interference, and the requirement for the structure strength of a battery cover is lowered. The invention further relates to an electronic device with the waterproof structure, for example, a mobile phone. The waterproof structure has the good waterproof effect, assembly processes are reduced, and production efficiency is improved.

The invention discloses a movable positioning testing mechanism, comprising a baseplate, a beam, a suspension arm support; wherein, the baseplate is fixed on a workbench, the beam spans over the baseplate, the suspension arm support is connected with the two ends of the beam; the mechanism also comprises a drive device which comprises a linear motion actuator, a first dump rail and a first chute block provided with a chute; wherein, the first dump rail is arranged on the two longitudinal sides of the baseplate, the first chute block is arranged on the beam and the chute is blocked on the first dump rail, one end of the linear motion actuator is fixed on the baseplate along the longitudinal direction of the baseplate and the other end thereof is fixed on the beam. As the two ends of the beam of the invention are connected with the suspension arm support for suspending objects to be tested, when the objects to be tested is under the baseplate during operation, the pressure on the beam is greatly reduced; in addition, the dump rails are arranged on the two sides of the baseplate and the linear motion actuator is used to drive the beam, so that only one linear motion actuator is needed to ensure stable operation of the beam. The invention has simple and reasonable design and effectively reduces the cost.

The invention relates to a gear shaft machining method and a gear shaft clamping tool used in the method. The gear shaft machining method comprises the following steps: 1, installing a stepped shaft sleeve on a rotary worktable of a vertical gear hobber, and adjusting a stepped hole of the stepped shaft sleeve to be coaxial with the rotary worktable, wherein the diameter of an inner hole at the upper end of the stepped shaft sleeve is large, and the diameter of an inner hole at the lower end of the stepped shaft sleeve is small; 2, inserting a lower stepped shaft structure of a gear shaft to be machined into the stepped hole of the stepped shaft sleeve from top to bottom, and after adjusting the gear shaft to be coaxial with the stepped hole, locking the gear shaft on the stepped shaft sleeve by using the cooperation of at least two sets of threaded holes and corresponding locking bolts, wherein at least two sets of threaded holes are arranged on the stepped shaft sleeve in an up-and-down spaced setting mode; and 3, carrying out machining on a gear machining section of the gear shaft by using a gear hobbing head on the vertical gear hobber. The invention provides a gear shaft machining method through which the up-down moving stroke of the gear hobbing head on a corresponding stand column can be reduced.

The invention relates to an integrated ejection / recovery device of a shipborne unmanned aerial vehicle, which comprises a base, a stability augmentation device, a base seat, an ejection device and a recovery device. The base seat is mounted on the base through bearings so as to be rotatable in the circumferential direction, and a cushioning device is mounted on the bottom of the base seat for reducing the impact force. The ejection device and recovery device of the unmanned aerial vehicle (UAV) are integrated into one body, which reduces the occupying space, improves the mobility of the device, and expands the application range of the UAV take-off and landing auxiliary device. Using the rotating base structure, the unmanned aerial vehicle (UAV) ejection take-off slideway is used as rockerarm, and the impact load is converted into torque by the integral rotating motion of the slideway and the base seat and transmitted to the cushion device in the base seat, which reduces the structuralstrength requirement of the collision net recovery system for UAV, and reducing the self-weight of the UAV. Through the self-stabilizing device and the terminal guiding device, the recovery precisionof the unmanned aerial vehicle is improved, and the influence of the operating environment on the recovery precision and the operating pressure of the unmanned aerial vehicle are reduced.

The invention discloses an electronic cigarette heating assembly and a portable small-smoke electronic cigarette atomizer thereof, and the electronic cigarette heating assembly comprises a support anda sealing part. The support comprises an upper support body and a lower support body, and an oil guide cotton piece, oil guide cotton cloth and a net-shaped heating piece are sequentially clamped between the upper support and the lower support; the upper support is provided with an oil guide channel for introducing oil to the oil guide cotton piece, and the lower support is provided with a smokeoutlet; the net-shaped heating sheet is connected with the conductive electrode to supply power to the net-shaped heating sheet; the internal gap of the oil guide cotton piece is larger than that of the oil guide cotton cloth. The atomizer comprises a shell, an oil cup is arranged in the shell and fixed in the shell through a base, a heating assembly is arranged at the bottom of the oil cup, and asmoke channel is formed between the oil cup and the shell. The electronic cigarette is uniform in heating, free of local high temperature, environmentally friendly and suitable for being used as a portable small-smoke electronic cigarette.

The invention relates to the field of ships, in particular to a pressure balance type floating body and a mounting method thereof. The floating body comprises water chambers, air chambers, air chamber inflation valves, a submersed pressure balancing control system, water chamber water passing systems and water chamber ventilation systems, wherein the interior of the floating body is divided into the water chambers and the air chambers. The center of buoyancy of the floating body and the gravity center of the floating body are in the same vertical line, and the center of buoyancy of the floating body is higher than the gravity center of the floating body. One air chamber inflation valve is arranged on each air chamber, and is connected with the submersed pressure balancing control system. One water chamber water passing system and one water chamber ventilation system are arranged on each water tank. The mounting method comprises the following steps: filling water into all the water chambers, lowering a main body of the floating body into the water and soaking the main body in the water, towing the main body of the floating body downwards, controlling the air pressure in each air chamber and external water pressure to be consistent, filling air in all the water chambers, and draining water in the water chambers to supply upward positive buoyancy. The pressure balance type floating body and the mounting method thereof have the advantages that the floating body can arrive at the working water area at one step, so that a large amount of manpower and physical resources are saved.

The invention discloses a pressure-storing and energy-saving washing tank and a pressure-reducing water drain valve. A pressure-reducing valve element is sleeved in a pressure-reducing cover to form the pressure-reducing water drain valve 2 and mounted on a water outlet 1B of a water tank. A valve rod 2C is connected with the pressure-reducing valve element 2A or is provided with a labor-saving lever mechanism 5. A permanent magnet or flowing pressure or electromechanical valve starting device is connected with the pressure-reducing valve element through the valve rod for indirect starting. A flow-storing flexible bag 7 and an air inlet and outlet hole or an air regulating valve can be arranged at the inner end of the water tank. A slow-draining and water-storage-supplement chamber 9 can be arranged at the outer end of the water outlet. The pressure-reducing valve needs few starting power and can directly start or indirectly start by the aid of a low-energy-consumption power device. The problems that existing pressure-storing washing tanks and straightway water drain valves are large in stress, difficult in starting, large in water drain pressure drop, high in cost and the like are solved. The pressure-reducing water drain valve has the advantages of low starting power, large water drain pressure, large flow, small pressure drop, capability of supplementing water storage, cleanness and water saving in washing, low cost, maintainability, low usage cost and the like.

The invention relates to the technical field of ships and particularly relates to an underwater floating body and an installing method thereof. The floating body comprises divided cabins and pressure-resistant cabins, wherein the left side and the right side of the floating body are symmetrically provided with the divided cabins; the front side and the rear side of the floating body are respectively provided with the divided cabin; the buoyancy provided by the divided cabin at the front side of the floating body is larger than that provided by the divided cabin at the rear side of the floating body or the buoyancy provided by the divided cabin at the rear side of the floating body is larger than that provided by the divided cabin at the front side of the floating body. The pressure-resistant cabins penetrate through the divided cabins and are fixedly connected with the cabin walls of the divided cabins. The floating center of the floating body and the gravity center of the floating body are in the same vertical line, and the position of the floating center of the floating body is higher than the position of the gravity center of the floating body. The pressure-resistant cabins are provided with inflation valves, and the divided cabins are provided with venting systems and water introducing systems. The installing method comprises the steps of: inflating the pressure-resistant cabins and filling water into the divided cabins; falling the underwater floating body down to a working water area; inflating air into the divided cabins to discharge a part of water in the divided cabins, and enabling the divided cabin to generate upward buoyancy. According to the underwater floating body and the installing method provided by the invention, the working water area can be reached by one time, so that a great amount of labor and materials is saved.

The invention relates to a hydraulic control frequency stabilized wind power generation apparatus. A system comprises a wind energy collection unit, an energy conversion and remote distance transmission unit and a hydraulic control frequency stabilized power generation unit, wherein the wind energy collection unit converts wind energy into mechanical energy, the energy conversion and remote distance transmission unit is connected with the wind energy collection unit, converts the mechanical energy to hydraulic energy, and realizes the remote distance transmission of the wind energy by adopting a hydraulic transmission principle, and the hydraulic control frequency stabilized power generation unit is connected with the energy conversion and remote distance transmission unit through a hydraulic pipeline, can convert the hydraulic energy into the mechanical energy, and can also convert the mechanical energy into electric energy, wherein the energy conversion and remote distance transmission unit and the hydraulic control frequency stabilized power generation unit are made into a closed type hydraulic loop through the hydraulic pipeline. The invention adopts the initial phase angle change arrangement of a hydraulic pump, and reduces the flow pulsation output by the hydraulic energy. The invention adopts the optimal matching of controlling the entering flow rate of a hydraulic motor and the output volume of the hydraulic motor, generates the constant rotating speed output of the hydraulic motor, drives an ordinary power generator set for generating constant frequency electric energy, and improves the quality of the electric energy.

A solar concentrator has frame members connected together to form a framework, and a flexible sheet attached to the framework such that the flexible sheet takes a loose shape and can flex in response to shaping forces exerted thereon. The sheet has a reflective surface located between the frame members. A shaping force system is operative, when activated, to exert the shaping forces on the sheet, the shaping forces configured to draw the sheet from the loose shape into a desired shape such that solar rays striking the reflective surface are focused on a target, and a solar energy receiver is attached to the framework at a location corresponding to the target. Thin wall tubing filled with pressurized air can provide strong light frame members. When the shaping force system is deactivated, the flexible sheet reverts substantially to the loose shape.

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.

The present invention relates to a wave energy power generation equipment. It mainly is formed from oscillation air chamber, neighborhood transition, non-return valve, pressure-stabilizing air chamber and turbine generator unit. Said invention also provides the working principle of said wave energy power generation equipment, and can greatly raise utilization rate of wave energy.

The invention provides a portable ejection mechanism for an unmanned aerial vehicle. The portable ejection mechanism comprises an ejection frame, an ejection rope and a ground pile. An airplane is arranged on the ejection frame. The ejection rope consists of three ropes, namely a force-bearing rope for flying at a tail part, a flying tension rope in a middle part and an elastic tension rope at a front part. The force-bearing rope for flying and the flying tension rope are respectively an elasticity-free rope, and the front end of the force-bearing rope for flying and the front end of the flying tension rope are tied together at the back end of the elastic tension rope, and are divided into three forked ropes from a knot. The back end of the force-bearing rope for flying is suspended on the flying device of the ejection frame; the back end of the flying tension rope is suspended on an ejection pothook arranged at the bottom of the airplane; and the front end of the elastic tension rope is suspended on the ground pile. Due to the use of the portable ejection mechanism for the unmanned aerial vehicle provided by the invention, the structure of the ejection support can be greatly simplified, and the weight of the ejection support can be reduced. The unmanned aerial vehicle can be under the status to be emitted for a long time, and the unmanned aerial vehicle can immediately emit once a fighter is captured. When the unmanned aerial vehicle is emitted, the ejection rope can be stretched, the enough emitted energy can be stored, and the airplane can not directly bear the tension force of the ejection rope.

The invention discloses a rooftop linkage tracing photovoltaic stent and a photovoltaic power generation system, which belongs to the technical field of photovoltaic power generation equipment. The stent comprises a driving mechanism, guide rails and a component unit. The guide rails are laid on rooftop and are fixed. The component unit is arranged across two adjacent guide rails, and comprises a component frame, a sliding part and a connecting rod. The sliding part is arranged in the guide rails. One end of the connecting rod is hinged with the sliding part. The other end is hinged with the component frame. The driving mechanism is applied to the sliding part of the component unit. When the photovoltaic stent is used, the connecting rod is pushed to hold up or lay the component frame. The whole photovoltaic stent structure can be close to the rooftop plane, which effectively reduces wind resistance; the weight of the entire photovoltaic stent structure is light, which reduces the overall structural strength requirement; and the rooftop linkage tracing photovoltaic stent and the photovoltaic power generation system have the advantages of long service life, simple structure, reasonable design and easy manufacture.

The invention discloses a solar energy collecting method and a device. The solar rays which are reflected and focused by a concave mirror are led into the inner part of a hollow cavity through a small hole on the hollow cavity which is made of high-temperature resistant material such as cast iron, carbon fibers and the like and is opaque and is in a pipe shape or a spherical shape, the solar ray is reflected and absorbed by the inner wall of the hollow cavity for multiple times to realize the conversion of solar energy to heat energy, and transparent glass or plastic shell in a spherical shape, an inclination rooftop shape, a round rooftop shape, a hemispherical rooftop shape and the like is made as a wind resistant body of the concave mirror reflective and focusing solar heat energy collecting device. The solar energy collecting device is low in production cost, is simple in process, is long in service life and is convenient to maintain.

The invention relates to a rotary type stereo garage device, comprising a garage exterior building, a part of building above the garage ground of a garage door and garage structure equipment composed of a parking space device and a rotary type structure controlled by a planetary gear, wherein the parking space device is composed of a parking space handrail, a sweeping board and a support frame through a connecting piece. The rotary type structure controlled by the planetary gear is a main structure of the rotary type stereo garage device, comprises fixed gear wheels, drive gear wheel carriers, driven gear wheels, drive gear wheels and transmission gear wheels connected with a motor. According to the rotary type stereo garage, the underground space and the ground space are combined, a stereo garage with a high space integration degree is designed, not only is the space utilization increased, but also the efficiency of automobile parking and taking is improved.

The invention relates to a microporous heat-isolating brick which is prepared from the raw materials in percentage by weight: modified perlite, a silicon dioxide sol and micropowder aluminum oxide. The dosage of the silicon dioxide sol is reduced on the premise of guaranteeing the combining strength of the heat-isolating brick, so that the reheating linear change rate of a product is reduced, and the stability of the product is improved. The heat-isolating brick provided by the invention is a baking-free brick and is simple in preparation process, easy to realize, low in energy consumption, small in pollution and environment-friendly. High strength of the refractory brick and low thermal conductance of insulating cotton are perfectly fused together, and a new era of a light refractory insulating material is created. The product has the characteristics of being low in heat conductivity, small in volume density, light in weight and high in compression strength, is high in cost performance, long in service life, convenient to construct, small in damage on a human body and good in insulating property, expands a novel path of energy conservation and consumption reduction of a thermotechnical kiln and provides a reliable material guarantee for structural improvement and energy conservation and consumption reduction of a conventional thermotechnical kiln.

The invention discloses a limiting plate structure, an upper reactor inner component and a suspension basket component, wherein the upper reactor inner component is used for installing the limiting plate structure, and the suspension basket component is used for providing support for the limiting plate structure. The limiting plate structure comprises a sliding cylinder and a lower end plate fixedon the bottom of the sliding cylinder, and a plurality of through holes are arranged on the lower end plate, the axis of each through hole is parallel to the axis of the sliding cylinder; a guiding device is arranged on the side wall of the sliding cylinder, after the lower end of the upper reactor inner component is embedded into the sliding cylinder from the upper end of the sliding cylinder, the guiding device is used to limit the movement state of the sliding cylinder relative to the upper reactor inner component; and the sliding cylinder only can slide up and down along the axis of the upper reactor inner component. The limiting plate structure can effectively avoid the problem that a fuel assembly is pressed by a coil spring to reduce the structural strength requirement of the fuelassembly.

The invention relates to a thyristor converter valve module for HVDC (High Voltage Direct Current) transmission, which is characterized by comprising two valve sections (1 and 2), wherein each valve section is an integrity in structure and comprises a saturated reactor (3), a thyristor unit (4), a DC isobarometric resistor unit, an energy-taking resistor unit, a damping resistor unit (5), a gate unit (6) and a water-cooling system; and in a thyristor-level assembly, the gate unit (6) is arranged at one side of the thyristor unit (4), and the damping resistor unit (5) and a damping capacitor unit (7) are arranged at the other side of the thyristor unit (4). The valve module is watertight, has the advantages of small geometrical size, light weight, convenient assembly and maintenance, simple technical operation and low requirements on operation skills and can effectively improve the mounting efficiency.

The invention discloses a cross-medium aircraft based on a common rotor and a cycloidal propeller. The aircraft comprises an aircraft body, a horizontal support frame and a cross-medium propeller. Anend part of the horizontal support frame is connected with the cross-medium propeller through a propeller tilting device, and the propeller tilting device is used for driving the cross-medium propeller to rotate in a vertical plane around an axis of the horizontal support frame; and the cross-medium propeller is provided with a plurality of blades evenly distributed around the axis of the cross-medium propeller, and the cross-medium propeller is connected with the roots of the blades through a blade turnover device. According to a deformation propeller considering performance characteristics of an aerial fluid and a underwater fluid, one set of propeller can be used for achieving omnidirectional maneuvering navigation and fixed-point hovering in the air and under the water, and a underwater slamming force and a storage space are reduced through composite deformation.

The invention relates to an ultra-large rectangular ingot blank sloping casting combined manufacturing device and an ultra-large rectangular ingot blank sloping casting combined manufacturing method. The device comprises a rectangular casting mould, wherein the rectangular casting mould is tilted at an angle of 5 to 15 degrees to the horizontal plane along the length direction; the rectangular casting mould is a combined structure consisting of a forced cooling metal bottom plate, four side plates and a cover plate; a metal pipe frame is arranged in the forced cooling metal bottom plate; facing sand layers are hung on the forced cooling metal bottom plate, the cover plate and the inner side of each side plate; a riser is arranged at the highest position of the assembled rectangular casting mould; and a molten steel pouring device, into which molten steel is injected, is arranged on the rectangular casting mould. By the device, static pressure and an impact force of the molten steel on a cast are reduced; the cost of manufacturing the cast is reduced; the cast is modeled, assembled and disassembled simply and flexibly; a box can be opened when the box is hot; harmful substances such as impurities, gases and the like are aggregated to the riser on the inclined top easily and then are removed; the ingot blank can be directionally solidified; internal shrinkage of the cast is eliminated; sponginess of the cast is reduced; and the quality of the ingot blank is improved.