98results about How to "Reduce the windward area" patented technology

The invention provides a main landing gear cabin door mechanism, an aircraft and a folding and unfolding method. The main undercarriage cabin door mechanism comprises a left cabin door and a right cabin door, one end of the left cabin door is provided with a first retractable driving mechanism, one end of the right cabin door is provided with a second retractable driving mechanism, and a small cabin door is hinged to the side, close to the right cabin door, of the left cabin door; the small cabin door and the left cabin door are provided with third folding and unfolding driving mechanisms which can respectively drive the small cabin door and the left cabin door to rotate; in the first position, the left cabin door and the right cabin door are both in a vertical state, and the small cabin door and the left cabin door are folded and overlapped; and at the second position, the left cabin door, the small cabin door and the right cabin door are horizontally positioned on the same plane. The small cabin door can be independently retracted and folded, after the cabin door is opened, the folded small cabin door can reduce the windward area of the cabin door in the put-down state, the pneumatic load borne by the cabin door is reduced, and the design of a driving mechanism for retracting and releasing the cabin door is lighter.

The invention relates to a tiltable ducted fan testing device. The tiltable ducted fan testing device comprises a supporting rack, a telescopic device, a transmission rod and a multi-dimensional force sensor, the telescopic device is hinged to the supporting rack, the output end of the telescopic device is hinged to one end of the transmission rod, the other end of the transmission rod extends upwards, the end is located above the supporting rack, and the middle of the transmission rod is rotationally arranged on the supporting rack. The multi-dimensional force sensor is arranged at the end, away from the telescopic device, of the transmission rod, and the bottom of the ducted fan is installed on the measuring face of the multi-dimensional force sensor. The testing device can continuously adjust the testing angle of the ducted fan at any time, guarantees the accuracy of a measurement result, and is wide in application scene.

The invention provides a reverse lift-drag combined vertical axis wind turbine based on differential transmission and a control method, the vertical axis wind turbine comprises a rotor system, a blade system, a supporting system, a transmission system and a control system, the rotor system comprises a composite rotor shaft, and the composite rotor shaft comprises an inner rotor shaft and an outer rotor shaft; the inner rotor shaft and the outer rotor shaft coaxially rotate around the same rotating shaft in different directions; the transmission system comprises a transverse driving gear, a longitudinal driven double-tooth gear and a transverse driven gear. Differential speed and reverse rotation between the inner rotor shaft and the outer rotor shaft are achieved through linkage of the gears. The blade system comprises lift-type blades and resistance-type blades, the control system can adjust the angles of the lift-type blades and the resistance-type blades according to the wind speed and the wind direction, under the extreme working condition, the angles are adjusted to enable the blade system and the supporting system to be tangent to form a closed structure, and the safety of the overall structure of the wind turbine is protected.

The invention discloses an undercarriage and an aircraft, and relates to the technical field of aircraft structural parts, the undercarriage comprises a front undercarriage and two main undercarriages, the front undercarriage is arranged on the front side of an aircraft body, the front undercarriage comprises a front aircraft wheel and a front buffer supporting column, one end of the front buffer supporting column is connected with the aircraft body and arranged in the aircraft body, and the other end of the front buffer supporting column is connected with the aircraft body; the other end penetrates out of the machine body and is elastically connected with the front machine wheel; the two main undercarriages are arranged on the two opposite sides of the aircraft body respectively, each main undercarriage comprises a rocker arm, a main buffer and a main wheel, the two ends of each rocker arm are a hinged end and a free end respectively, the hinged ends are hinged to the inner side of the aircraft body so that the rocker arms can only swing in the course of the aircraft, and the free ends are connected with the main wheels. A part of the structure of the front undercarriage is arranged in the aircraft body, and the rocker arm of the main undercarriage is directly hinged to the aircraft body, so that the overall windward area of the undercarriage is reduced, the aerodynamic resistance and the overall weight of the aircraft are reduced, and the overall performance and endurance of the aircraft are improved.

The invention relates to the technical field of photovoltaic supports, in particular to a photovoltaic panel support, which comprises an external assembly, an internal assembly, an external assembly, an internal assembly and an external assembly, and is characterized in that the external assembly comprises support frames and a support frame arranged between the support frames; the transmission assembly comprises fixing frames arranged on the two sides of the supporting frame, first connecting cylinders arranged in the fixing frames and transmission rods arranged at one ends of the first connecting cylinders. The wind pressure assembly comprises a fixing rod arranged at one end of the fixing frame, a fixing ring arranged at one end of the fixing rod and an operation rod arranged in the fixing ring in a sleeved mode. The rotating assembly comprises a shaft rod arranged at one end of the first connecting cylinder, the wind pressure assembly can be blown by strong wind, the transmission assembly is driven by the wind pressure assembly to rotate, in the rotating process of the transmission assembly, the transmission assembly drives the rotating assembly to rotate, and the rotating assembly drives the support frame on the outer side to rotate again; and therefore, the windward area is reduced, and damage of the device is prevented.

The utility model aims at disclosing a plate-type low-temperature economizer for a coal-fired power plant, which comprises an economizer shell and a plate-type heat exchange core body, the plate-type heat exchange core body is arranged in the economizer shell, compared with the prior art, the plate-type low-temperature economizer does not contain fins, all heat exchange areas are in one-time heat exchange, and the heat exchange efficiency is high; the plate sheets used by the corrugated plate bundle are small in thickness, so that the weight of the plate-type low-temperature economizer is reduced; the distance between the flue gas channels can be designed according to the flue gas working condition, and blockage is not prone to occurring; and the windward area is small, the erosive wear of the corrugated plate bundle is reduced, the service life of the plate type low-temperature economizer is prolonged, and the aim of the utility model is fulfilled.

The invention relates to the technical field of offshore wind power, in particular to a truss type offshore floating type wind power foundation platform which comprises a bottom frame, a wind turbine generator set, a floating type foundation and a three-dimensional truss structure, the three-dimensional truss structure comprises a truss body, floating boxes, a bottom box, a mooring turret and a mooring system, the floating boxes are fixed to two vertex angles of the bottom frame, and the bottom box is fixed to the bottom box. The mooring turret is fixedly connected to the other vertex angle, the bottom box is fixedly connected with the three vertex angles of the bottom frame, and the truss body is fixedly installed on the upper surface of the buoyancy tank. Large heave damping is formed through the floating type foundation and disturbance of surrounding seawater, fluctuation and swaying of the floating type foundation under the influence of environmental loads are restrained, a mooring system is arranged to passively and coaxially rotate around a mooring single point under the action of wind power, wind wheels of draught fans are kept to face the wind all the time, and by independently adjusting the output power of the two draught fans and the resistance of the wind wheels, the wind power generation efficiency is improved. The passive yaw function is actively intervened, and the maximum power generation efficiency is obtained through the maximum wind sweeping area.

The invention discloses a tilting folding wing and a vertical take-off and landing aircraft. Comprising a central wing (2), outer wings (3) capable of being folded / unfolded in a tilting mode are symmetrically connected to the two ends of the central wing (2), and tilting rotating shafts (501) of the outer wings (3) are located at the outer ends of the central wing (2) and located at the positions, close to the rear portions, of the front edges of the outer wings (3); the two outer wings are driven by the same folding driving mechanism (4) to be folded / unfolded in a tilting mode, and the connecting line of points on the outer wings (3) before and after tilting is perpendicular to the rotating shaft (501). The device has the advantages of being simple in structure, good in synchronism and high in safety.

The utility model relates to the technical field of building safety protection, in particular to a building safety protection partition plate which comprises a protection plate and a stand column, an adjusting device is arranged on the surface of the stand column and comprises an electric push rod, the electric push rod is fixedly connected with the stand column, and the output end of the electric push rod is fixedly connected with a rack. The surface of the protection plate is fixedly connected with a frame, the rack is slidably connected with the inner wall of the frame, the surface of the protection plate is rotatably connected with six fixing plates, the surfaces of the six fixing plates are fixedly connected with gears, the gears are meshed with the rack, and the surface of the protection plate is glued with a plurality of reflective strips. Ventilation holes are formed in the surface of the fixing plate. According to the utility model, the problem that the protection plate is easily inclined, toppled over and even damaged due to the fact that the protection plate is influenced by increased wind load and fierce wind can exert huge impact and pressure on the protection plate is solved.

The application relates to a force couple balance and longitudinal array push-pull vertical take-off and landing high-speed aircraft, belonging to the technical field of aircrafts, which comprises a fuselage, a rotor, a fixed wing, a steering controller and a propeller. The rotor is installed at the top of the middle part of the fuselage through a rotor shaft, and a clutch is arranged between the rotor and a power system and / or a transmission system matched with the fuselage, so as to be controlled to be disconnected or to transmit power to the rotor. The steering controller comprises a fixed base and a rotating base, and each of the nose and the tail has a set of the rotating base. The propeller is provided with two propellers which are respectively installed on the rotating bases of the nose and the tail, and are controlled to rotate with the rotating bases relative to the fixed base. The force couple formed by the front and rear thrust vectors is used to balance the reverse torque brought by the rotor. When the propeller is coaxial with the middle axis of the fuselage, the wind area of the single propeller obtains double thrust. The application can improve the energy utilization rate, improve the carrying capacity, improve the flight safety performance and obtain a longer hovering time.

The invention aims to provide a gas turbine engine and a gear transmission system thereof. The gear transmission system comprises a power input assembly, a bevel gear transmission chain and a plurality of output driven bevel gears. The power input assembly comprises an input driving bevel gear, the bevel gear transmission chain comprises a transmission shaft, an input driven bevel gear arranged on the periphery of the transmission shaft in a sleeving mode and a plurality of output driving bevel gears, the input driven bevel gear and the output driving bevel gears are in transmission connection with the transmission shaft, and the input driven bevel gear is meshed with the input driving bevel gear. The output driven bevel gears and the output driving bevel gears are arranged in a one-to-one correspondence mode, each output driven bevel gear is meshed with the corresponding output driving bevel gear, and each output driven bevel gear is in transmission connection with a gas turbine engine accessory through a connecting shaft. The gear transmission system is small in size, light in weight and capable of improving the overall performance of the engine.

The invention discloses a light composite sandwich panel fence which comprises an I-shaped supporting piece, an L-shaped piece used for being connected with a foundation is arranged at the bottom of the I-shaped supporting piece, and an L-shaped piece used for being connected with the foundation is arranged at the bottom of the I-shaped supporting piece. The sound absorption assembly is arranged on the I-shaped supporting piece and comprises a first sound absorption screen, the first sound absorption screen is fixedly connected to the inner wall of the lower side of the I-shaped supporting piece, a second sound absorption screen and a third sound absorption screen are arranged at the top of the first sound absorption screen, a sliding rail device is arranged on the I-shaped supporting piece, and the sliding rail device is fixedly connected with the first sound absorption screen. The second sound-absorbing screen and the third sound-absorbing screen are slidably connected with the I-shaped supporting piece through sliding rail devices, the first sound-absorbing screen, the second sound-absorbing screen and the third sound-absorbing screen are sequentially arranged from bottom to top, the top of the third sound-absorbing screen is rotatably connected with an arc-shaped sound-insulating plate, and a wind plate piece is arranged at the top of the third sound-absorbing screen. The wind plate piece can generate downward pressure when airflow passes through, and a buffering assembly is arranged between the third sound absorption screen and the first sound absorption screen.

The utility model provides an expressway photovoltaic panel mounting structure and a photovoltaic system. The expressway photovoltaic panel mounting structure comprises a cabinet body; the wind direction shaft is rotationally arranged on the cabinet body along an axis extending in the up-down direction; and the light following assembly is arranged on the wind direction shaft, the light following assembly is in linkage with the photovoltaic panel to rotate forwards and backwards along the axis extending in the left-right direction, the photovoltaic panel has a first pitching state and a second pitching state, and when the first pitching state and the second pitching state are switched, the inclination angle of the photovoltaic panel is adjusted. The technical problems that a traditional photovoltaic panel is large in windward area, easy to damage and weak in power generation capacity are solved.

The utility model provides a counterbalance, a motor rotor assembly and a compressor, the counterbalance comprises a counterbalance main body, the counterbalance main body extends along the circumferential direction of a motor rotor, the counterbalance main body is provided with a windward end and a leeward end, and at least the windward end is provided with a suspended flow guide body extending along the circumferential direction of the motor rotor. A suspended overflowing space is formed between the side, close to the first end face, of the suspended flow guiding body and the first end face, and the suspended flow guiding body is provided with a flow guiding radial outer side face and a flow guiding radial inner side face. The flow guide radial outer side face gradually gets close to the radial inner side of the motor rotor and / or the flow guide radial inner side face gradually gets close to the radial outer side of the motor rotor so that the cross section of the suspended flow guide body can become smaller and smaller in the circumferential direction away from the balance block body. According to the utility model, the internal flow field of the compressor is effectively prevented from being disturbed due to the pumping effect, the operation noise of the compressor is reduced, and meanwhile, the oil spitting rate and oil spitting quantity of exhaust refrigerant of the compressor are reduced.

The invention provides photovoltaic energy storage equipment which comprises a base, a telescopic frame arranged in the base and a main board connected with the telescopic frame. The auxiliary plate is arranged on the surface of the main plate and is unfolded along with rotation of the main plate, a fourth connecting rod is arranged on the surface of the auxiliary plate and the surface of the main plate, a connecting rod is connected to the surface of the fourth connecting rod, one end of the fourth connecting rod is connected with the telescopic frame, and when the base drives the telescopic frame to move, the angle of the main plate is changed, and the auxiliary plate is driven to be unfolded relative to the main plate. The dynamic adjustment of the photovoltaic acquisition area is realized, and when the illumination is sufficient, the auxiliary plate can be automatically unfolded, so that the total light receiving area is greatly increased; in severe weather or transportation, the auxiliary plate is folded on the surface of the main plate, the windward area and space occupation are effectively reduced, the balance between the power generation efficiency and the structural safety is realized, a back-mounted connecting rod scheme is adopted, all stress connecting rods and motion fulcrums are hidden on the backlight surface of the photovoltaic panel, the absolute cleanness of the light receiving surface is ensured, and the service life of the photovoltaic panel is prolonged. And the power generation efficiency of the photovoltaic panel is improved.

The invention discloses a modular photovoltaic shed power station rapid assembling and supporting device, and belongs to the field of photovoltaic power stations, the modular photovoltaic shed power station rapid assembling and supporting device comprises a bottom plate, an electric rotating disc is arranged at the upper end of the bottom plate, a mounting seat is fixedly connected to the upper end of the electric rotating disc, a mounting rod is rotatably connected to the upper end of the mounting seat, and the outer wall of the mounting rod is fixedly connected to a mounting frame; a photovoltaic panel is arranged in the mounting frame; the upper end of the electric rotating disc is fixedly connected with a fixing plate, and the outer wall of the fixing plate is fixedly connected with a motor. According to the invention, the motor drives the gear and gear block linkage mechanism, thereby achieving the automatic adjustment of the inclination angle of the photovoltaic panel, and effectively improving the sun tracking precision and power generation efficiency. Meanwhile, a pure mechanical wind power induction and disconnection protection mechanism is utilized, a driving part is automatically separated in strong wind, the photovoltaic panel is prevented from being located at a high-risk windward angle, power generation optimization and passive safety protection functions are achieved, extra energy consumption is not needed, and the structure is simple and reliable.

The utility model discloses an eVTOL airplane aileron structure, including aileron framework and the aileron skin that wraps in aileron framework outside. Aileron framework includes the beam of exhibition, chord rib, rudder angle and a plurality of suspension joint, and the beam of exhibition is composed of web and the edge strip of web upper and lower two sides. Rudder angle is composed of connecting portion and ear piece, and the web inside surface of beam of exhibition is fixed with suspension joint, and a plurality of suspension joint symmetrical setting is in the two sides of rudder angle, and the through -hole is set up on suspension joint. Chord rib includes two end ribs, a plurality of ordinary ribs and a plurality of leading edge ribs, and the aileron skin is composed of upper skin, lower skin and three connecting band plate. In the utility model aileron structure, the main body structure of rudder angle is connected in the inside of aileron, only the connecting ear piece of rudder angle is exposed in the air, and the wind area is very small, and the aerodynamic drag is small. Meanwhile, the other side of the beam of exhibition is designed with reinforcing joint in the position corresponding with rudder angle, and the reinforcing joint and rudder angle are connected together by fastener through the web of beam, and the connecting strength is high.

The invention belongs to the related technical field of wind tunnel tests, and discloses a wind tunnel test wind turbine tail flow measuring device and system based on a pitot tube array. The wind measurement module comprises wind measurement units which are connected in series in the horizontal direction, each wind measurement unit comprises two scissor arms and a pitot tube, the centers of the two scissor arms are fixedly connected, and the two scissor arms can rotate around the centers to adjust the included angle between the two scissor arms; the pitot tube is fixedly connected to the center of the scissor arm, the mounting direction of the pitot tube is the same as the direction of to-be-measured airflow, and the pitot tube is used for measuring the airflow velocity of wake flow in real time; the wind measurement module is connected to the adjustable mounting support module, the height and width of the wind measurement module are adjusted by adjusting the height and width of the adjustable mounting support module, and then the height of wind measurement units in the wind measurement module and the distance between the wind measurement units are adjusted. According to the invention, the problem that wake flow measurement is difficult to be suitable for fan models with different scale ratios at the same time is solved.

The present invention relates to the field of heat exchanger technology, and in particular to a high-strength flat tube heat exchange tube, a heat exchanger with contactless thermal resistance fins and a processing technology thereof, comprising a base tube, the base tube being a round tube structure before processing, the base tube comprising a water inlet pipe section and a water outlet pipe section at both ends and a processing section located therebetween, an extrusion section is arranged at intervals on the processing section, a bending section is arranged between the extrusion sections, the extrusion section is in contact with the bending section, and an external extrusion mechanism extrudes the cross section of the extrusion section into a flat elliptical shape by extruding the two ends of the extrusion section. The present invention extrude the traditional round tube into a flat tube, i.e., a tube structure with a flat elliptical cross section, and uses two elliptical structure parts as the windward side and the leeward side. Compared with a round tube under the same water flow conditions, the present invention has a smaller windward area, reduces the possibility of smoke flow obstruction, and is conducive to enhancing the heat exchange performance.

The windproof advertisement display support comprises a main rod, supporting legs and a base, the lower portion of the main rod is arranged on the base through a connecting plate and a spring, the supporting legs are fixedly hinged to the base, the main rod is provided with a fixing device for fixing an advertising board, the fixing device comprises an upper fixing structure and a lower fixing structure, and the upper fixing structure and the lower fixing structure each comprise a sleeve arranged on the main rod in a sleeving mode. A fixed cylinder is arranged at one end of the sleeve, the inner diameter of the sleeve is larger than that of the fixed cylinder, a transition cylinder is formed between the sleeve and the fixed cylinder, receding grooves are formed in the cylinder wall of the fixed cylinder and the cylinder wall of the transition cylinder in the axial direction, the outer side of the fixed cylinder is sleeved with a hoop, and a bearing is arranged at the other end of the sleeve and comprises an inner ring, an outer ring and balls. The outer ring is provided with a fixing piece; auxiliary rings are arranged on the outer rings of the two bearings and connected with the sleeve through springs. The problem that an existing advertisement support is prone to inclining and even collapsing under the windy weather condition is solved, wind power can be effectively resisted, and stable display of advertisements is guaranteed.

The invention discloses a wind-resistant lightning protection mechanism for a transformer substation, and relates to the technical field of lightning arrester wind resistance. The problem that the overall wind resistance of the lightning protection mechanism cannot be reduced while the overall wind resistance of the lightning protection mechanism cannot be improved is solved. The device specifically comprises a mounting plate, a fluted disc is fixed to the outer wall of the mounting plate, a lightning arrester is fixed to the outer wall of the fluted disc, a lightning rod is fixed to the outer wall of the lightning arrester, a first supporting ring is rotationally connected to the outer wall of the lightning rod, and a connector is fixed to the outer wall of one side of the first supporting ring; the outer wall of the first supporting rod is rotationally connected with a first connecting block, and a guide block is fixed to the outer wall of the first connecting block. The overall wind resistance of the lightning rod can be improved, meanwhile, the first supporting rod moving to the other side of the windward side of the lightning rod can effectively reduce the overall windward area of the lightning protection mechanism while supporting the overall lightning rod, and therefore the overall wind resistance of the lightning protection mechanism is reduced.

The invention discloses a photovoltaic support self-adaptive adjusting and reinforcing device, which relates to the technical field of photovoltaic power generation, and comprises a supporting seat, a detection mechanism arranged at the top of the supporting seat and used for detecting the external wind speed and the inclination degree of the supporting seat, and an inclination angle adjusting mechanism arranged at the top of the supporting seat and used for adjusting the inclination angle of the supporting seat. And the inclination angle adjusting mechanism is arranged in the supporting seat. According to the photovoltaic support self-adaptive adjusting and reinforcing device, the wind level is monitored in real time through the wind speed sensor, when the wind speed exceeds the critical value, the control center rapidly triggers the dip angle adjusting process, the switching mechanism is accurately connected with the power transmission link, the worm and worm gear speed reduction pair drives the lead screw to drive the traction rod to act, and the photovoltaic panel is adjusted to be in the horizontal state from the power generation dip angle; the windward area and the wind load are greatly reduced, and the self-locking characteristic of the worm and the worm gear and the mechanical locking of the electromagnetic brake are matched, so that the angle springback under strong wind and the gliding of the sliding piece can be effectively prevented.

The invention provides an integrated supporting structure suitable for a rocket sled with a large length-diameter ratio. The integrated supporting structure mainly solves the problem that in the prior art, a rocket sled supporting structure cannot meet requirements of large-diameter, large-length-diameter-ratio and thin-wall type tested objects. According to the integrated supporting structure suitable for the rocket sled with the large length-diameter ratio, a base plate, a main plate and a sealing plate are adopted to form the supporting structure similar to a tetrahedron, and the end face of the main plate is a curved surface; supporting ribs are arranged in a cavity formed by the bottom plate, the main plate and the sealing plate; a plurality of through holes are formed in the edge of the main plate, and threaded sleeves are arranged in the through holes. When in use, the support structure is fixedly connected with a tested object by the buckle through a screw; the device is suitable for a large-diameter and large-length-diameter-ratio thin-wall tested object, the structural stability is good, the strength is high, the curved surface area of the main plate is large, the pressure intensity of a contact surface is effectively reduced, and the problem of local stress concentration of the thin-wall tested object is solved.

The present invention relates to the field of building curtain wall installation, and in particular to a glass curtain wall positioning and installation device, including a crane and an electric pulley, etc.; the crane is installed on the roof; and the front side of the crane is connected to an electric pulley. The present invention realizes interception of light by a sunshade, preventing the workers located behind the glass plate from being irradiated by light to the eyes, and improving the safety of the workers when installing the glass plate. The windward surface of the counterweight bar is small and the metal material with high density is adopted, so that the sunshade can be stably located behind the glass plate when blown by the wind, preventing the sunshade from shaking greatly and affecting the stability of the glass plate, and ensuring the sunshade effect on the glass plate at the same time. Under the premise of ensuring the sunshade effect by installing a guide cloth at the sunshade slot, the windward area of ​​the sunshade is reduced, thereby reducing the shaking of the sunshade. After intercepting sand and gravel, the V-shaped guide cloth gathers the sand and gravel to the middle of the guide cloth, so as to prevent the sand and gravel from affecting the workers who plug in the glass plate.

The invention provides an anti-corrosion and anti-collision device of an offshore wind turbine set berthing piece, and relates to the field of berthing pieces. The anti-corrosion and anti-collision device of the offshore wind turbine set berthing piece comprises a mounting plate, an air bag is fixedly mounted at the front end of the mounting plate, a head-on collision plate is fixedly mounted at the front end of the air bag, connecting lugs are fixedly mounted at the two ends of the head-on collision plate, traction mechanisms are arranged on the two sides of the mounting plate, and each traction mechanism comprises a vertical reversing support. And the vertical reversing bracket is obliquely arranged towards the outer side. According to the anti-corrosion and anti-collision device of the offshore wind turbine set berthing piece, the head-on collision plate is arranged to bear collision of ships, the two sides of the head-on collision plate are connected with the traction ropes, the ends, away from the head-on collision plate, of the traction ropes are made to be vertically downward through the reversing supports, and when the head-on collision plate shifts, pulling force for a balancing weight to move upwards needs to be provided; therefore, the buffering effect can be achieved, and the problem that in the prior art, in order to provide enough buffering, a buffering part needs to protrude out of the platform by a large distance, and space is occupied is solved.

The application relates to the technical field of photovoltaic support, in particular to a wind-resistant and shock-resistant self-balancing photovoltaic support and an assembling method thereof, which comprises a support frame, the support frame is provided with a pitching support, the pitching support is connected with a triggering frame, a connecting frame is rotatably installed on the pitching support, a plurality of groups of photovoltaic panel bodies are rotatably installed on the connecting frame, and abutting wheels are rotatably installed on the side of the connecting frame; an elastic supporting assembly is connected with the pitching support, the elastic supporting assembly is formed with a holding position and two release positions, when wind exceeding a predetermined level acts on the photovoltaic panel body, the abutting wheels can be switched from the holding position to the release position; an energy storage structure is connected with the photovoltaic panel body, the energy storage structure can drive the photovoltaic panel body to perform a deflection action; and a locking shaft is connected with the energy storage structure, the locking shaft cooperates with the triggering frame, so that the wind resistance of the photovoltaic support is improved.

The invention discloses a cold-resistant and stretch-resistant high-voltage cable, and relates to the technical field of high-voltage cables, the cold-resistant and stretch-resistant high-voltage cable comprises a metal conductor, the outer side of the metal conductor is coated with an internal insulating layer, and the outer sides of a plurality of internal insulating layers are jointly coated with a limiting silicon rubber sleeve; the outer side of the limiting silica gel sleeve is sequentially coated with a rubber protection layer, a metal shielding layer and an external rubber protection layer, and the outer side of the external rubber protection layer is sleeved with a counterweight clamping bottom ring. The cable is prevented from being broken due to too low temperature in cold weather, the overall service life of the cable is effectively prolonged, meanwhile, auxiliary heating pressurization is actively performed on the outer side of the cable, snow and ice shells on the outer side of the cable are melted and subjected to spalling cleaning through auxiliary heating and outer diameter expansion of the cable, and the service life of the cable is prolonged. The cleaning mode of the cable in rainy and snowy weather is optimized, and the cleaning and maintenance cost of the cable in cold weather is reduced.

The utility model relates to photovoltaic support technical field provides a angle adjustable desert area photovoltaic support subassembly, including fixed plate, the top inlay of fixed plate has solar photovoltaic board. The utility model discloses be provided with cleaning structure, under the action of movable rod, the stability of movable plate movement has been strengthened, the movable plate after moving drives the scraper to descend, makes the bottom of scraper closely fits the surface of solar photovoltaic board, fixed plate, first fixed frame and second fixed frame, when the mobile seat moves on the outside of threaded rod, the mobile seat will drive the top plate to move through the connecting seat, under the action of protective curtain, prevent sand and dust from entering the inside of first fixed frame and second fixed frame, the top plate after moving will drive the scraper to uniform speed scrape and sweep the surface of solar photovoltaic board, fixed plate, first fixed frame and second fixed frame, under the action of protective layer, can prevent desert fine sand electrostatic adsorption, cohere scraper to solve the power generation efficiency attenuation problem under the wind sand environment.

The application discloses a motorcycle, comprising a frame, a vehicle body cover arranged at least partially on the frame, a walking assembly connected at least partially to the frame, a driving assembly for driving the walking assembly, the driving assembly comprising a housing and a lubricating assembly, wherein the housing is formed with an accommodating space, the lubricating assembly comprises an oil pump and a scavenging pump assembly, the oil pump and the scavenging pump assembly are fixedly connected, and the oil pump and the scavenging pump assembly are arranged in the accommodating space. By integrally arranging the oil pump and the scavenging pump assembly, the space occupied by the lubricating system during arrangement is reduced, the driving assembly of the motorcycle is arranged more compactly and light in weight, the windward area of the driving assembly is reduced, and the resistance of the motorcycle during driving is reduced.

The utility model discloses a double-channel micro-channel condenser which comprises two flat pipes which are arranged in parallel and are of a snakelike structure, radiating fins are filled between the upper flat pipes and the lower flat pipes which are adjacent to each other, a lower collecting pipe is connected between the lower ends of the two flat pipes, and an upper collecting pipe is connected between the upper ends of the two flat pipes. The lower collecting pipe and the upper collecting pipe are each provided with two mounting holes, the upper surface of the upper collecting pipe is connected with two upper side plates, the space between the lower surfaces of the upper side plates and the upper surfaces of the flat pipes is filled with cooling fins, two lower side plates are fixed to the lower surface of the lower collecting pipe, and the space between the upper surfaces of the lower side plates and the lower surfaces of the flat pipes is also filled with cooling fins. A double-flow-channel structure is adopted, the internal resistance of a refrigerating system can be effectively reduced, the pressure balance of the refrigerating system is kept, refrigerants can be fully liquefied for heat dissipation, and the heat dissipation efficiency is improved; under the same heat exchange capacity, the use space and the windward area of the condenser are greatly reduced, and the product cost is reduced.