40results about How to "Small section" patented technology

The invention provides a prestressed reinforced concrete supporting structure which comprises at least one layer of horizontal support, each layer of horizontal support at least comprises a horizontal beam, at least one horizontal beam comprises at least two structural sections, and the structural sections of the same horizontal beam are connected in sequence. The adjacent structural sections of the same horizontal beam are connected into a whole through a post-pouring main supporting beam, the post-pouring main supporting beam is constructed after prestress is applied to the adjacent structural sections, and each structural section is of a reinforced concrete structure. The invention further provides a construction method of the prestressed reinforced concrete supporting structure. The horizontal beam is divided into at least two structural sections, and the structural sections are connected into a whole after prestress is applied to the structural sections, so that the complete horizontal beam is formed. The problems that an existing reinforced concrete supporting structure can only passively resist the external soil pressure of the foundation pit and the deformation of the foundation pit is large due to the fact that no prestress exists can be smoothly solved, and the safety of foundation pit construction is improved.

The invention provides a traffic tunnel hybrid energy direct-current micro-grid, which comprises a plurality of sections of direct-current buses, an energy storage battery, a distributed power supply, an emergency mobile power supply and a local direct-current load, the multiple sections of direct-current buses are connected with the energy storage battery, and the multiple sections of direct-current buses comprise a direct-current bus I arranged in the center of the tunnel, a direct-current bus II arranged at the entrance of the tunnel and a direct-current bus III arranged at the exit of the tunnel; the direct current bus I is connected to a mains supply through a one-way AC / DC converter, the direct current bus II and the direct current bus III are connected to a distributed power supply and an emergency mobile power supply, and the direct current bus I is networked with the direct current bus II and the direct current bus III through a two-way DC / DC converter. Third harmonics existing in the system can be greatly reduced, the electric energy quality of the system is improved, the use amount of copper consumables is obviously reduced, and the equipment composition of the system is simplified; the open type system is plug-and-play, provides convenience for access of power generation of various new energy sources, utilizes renewable energy sources as much as possible to generate power sources, and achieves energy conservation and emission reduction.

The invention relates to the technical field of surgical aspirators, and discloses a neurosurgical aspirator which comprises an aspiration body and further comprises a shell, the aspiration body is arranged in the shell, a positioning assembly is arranged between the aspiration body and the shell, a plurality of sliding grooves are formed in the shell in a penetrating mode, and the positioning assembly comprises a positioning ring, a locking ring, a connecting ring and a plurality of connecting rods. The connecting rods are arranged in the sliding grooves respectively, the locking ring is in threaded connection with the outer wall of the shell, the positioning ring is arranged at the ends, close to the locking ring, of the connecting rods, the connecting ring is arranged at the ends, away from the locking ring, of the connecting rods, and the attraction body is located in the connecting ring. By forming the sliding groove in the shell, the connecting rod is slidably installed in the sliding groove, the position of the connecting rod in the sliding groove is adjusted through the connecting ring, then the length of the positioning ring and the length of the suction body are controlled, a doctor can suck wounds with different depths conveniently, and meanwhile the positioning ring is matched to prevent the suction body from making direct contact with nervous tissue; and secondary injury in the operation process is prevented.

The utility model relates to an automatic leveling lifting platform for ultra-precision machining, which comprises a bottom plate, a driving lifting assembly and a carrying table, and the driving lifting assembly mounted on the bottom plate can drive the carrying table above to move in the vertical direction. The utility model aims to solve the problem that a traditional Z-axis lifting mechanism is low in rigidity, precision and motion stability, and provides a low-section lifting Z-axis for ultra-precision machining, which converts horizontal motion into lifting motion by utilizing a wedge block and has rigidity, precision and motion stability. And meanwhile, the flatness change of the whole breadth of the lifting platform in the moving process is also solved.

The utility model provides a telescopic arm device and a fire fighting truck, and relates to the technical field of fire fighting equipment. The telescopic arm device comprises a basic arm, a second-section telescopic arm, a third-section telescopic arm, a telescopic rod, a cylinder barrel, a chain and a chain wheel assembly. Wherein one end, close to the telescopic rod, of the cylinder barrel is connected with the two-section telescopic arm, and the other end is connected with the chain wheel assembly; and the other end of the chain is connected with the three-section telescopic arm by winding a chain wheel assembly. It can be understood that the telescopic arm device is high in integration level, the chain and the chain wheel assembly are arranged on the cylinder barrel, the internal space of the arm frame is fully utilized, the distance between the arm frame and the two-section telescopic arm is reduced, the section of the arm frame of the two-section telescopic arm is reduced, the dead weight of the arm frame of the two-section telescopic arm is reduced, and the telescopic arm device is convenient to use. Meanwhile, the assembly process and process of the telescopic arm device are simplified, and the assembly efficiency is improved; in addition, the chain is hidden in the middle of the arm support, so that rusting and aging of the chain caused by wind and sun exposure are avoided.

According to the steel frame construction method for old building transformation, the problem that it is difficult to guarantee that the original appearance of an outer wall of an original building can not be completely reserved on the basis that the commercial use structure requirement and the function requirement are met through a traditional old community transformation technology is solved. The method comprises the steps that geological investigation is conducted on the area where an old building needing to be transformed is located, structural characteristics of the old building are analyzed and calculated, a steel frame structure system and an old building reinforcing system outside the old building are designed, and the old building is reinforced according to the steel frame structure system and the old building reinforcing system outside the old building. According to the principle that an old building reinforcing system does not damage a strip-shaped foundation of an original structure of the old building, a beam plate type raft foundation is adopted, foundation reinforcing treatment is conducted on the old building, operation guarantee is provided for construction of a steel frame structure, and then after cracks of an original wall face are repaired, a roof is dismantled and repaired. And landscape building protective transformation which is ecological, suitable for swimming, suitable for industry and harmonious is achieved.

The invention relates to a variable-section spring type current lead which can be applied to superconducting electrical equipment such as a superconducting fan, a superconducting reactor and a superconducting cable and comprises a conductor substrate, a superconducting conductor and a flange cover plate, the flange cover plate is fixedly connected with a shell of a Dewar container, the conductor substrate penetrates through the flange cover plate, the superconducting conductor is located in the conductor substrate, and the superconducting conductor is located in the conductor substrate. One end of the conductor substrate is connected with the current leading-out terminal; the part, located below the flange cover plate, of the conductor substrate is made of a flexible conductive material, the conductor substrate is of a sandalwood-shaped structure, is in a spiral rising conical spring shape when unfolded and is in a disc shape when flattened, and the cone top of the conical spring shape is located on the bottom face of the flange cover plate. The joint of the conductor substrate and the current leading-out terminal is located at the cone bottom edge of the conical spring shape. Compared with the prior art, the invention has the advantages that: under different working conditions, the change of conduction heat leakage and electric loss can be realized by adjusting the length and the cross section, so that the heat loss is minimized under different working conditions.

The present invention provides a vehicle cooling fan which can be quickly installed, and relates to the technical field of cooling fans, comprising: a mounting component; the mounting component comprises a prefabricated component and a fixing groove, the inner side of the prefabricated component is provided with a U-shaped through groove, when in use, a shell body and a connecting component are placed on a lifting plate, a bottom rod at the lower end of the connecting component is engaged with a docking hole, and the lifting plate is pushed downward, when it is lowered to a certain position, an insertion rod passes through the lifting plate and is inserted into a locking hole of the connecting component, thereby limiting the sliding connecting component and the lifting plate, so that the shell body can be quickly fixed on the front side of the prefabricated component, so that the fixing and installation of the cooling component can be completed without the aid of bolts, thereby solving the problem that the existing automobile cooling fan is usually fixed to the frame by bolts, therefore, after disassembly and maintenance in the later stage, each fixing bolt needs to be tightened one by one, which leads to the problem that a lot of time is needed when installing the cooling fan.

The invention discloses a substation frame beam-column connection structure and a design method thereof, comprising a steel tube herringbone column, an inlet and outlet line beam and a busbar beam, wherein the inlet and outlet line beam and the busbar beam are fixedly connected to the steel tube herringbone column; the inlet and outlet line beam and the busbar beam are both triangular cross-section lattice beams; an annular node plate of a steel tube herringbone column and a cantilevered corbel top plate are arranged at the connection node of the steel tube herringbone column, a stiffening plate is arranged below the annular node plate of the steel tube herringbone column, a column top plate is arranged at the top of the steel tube herringbone column, a stiffening plate is arranged below the column top plate, the inlet and outlet line beam is arranged above the busbar beam, the upper chord rod and the lower chord rod of the busbar beam are respectively connected to the steel tube herringbone column; the upper chord rod and the lower chord rod of the inlet and outlet line beam are respectively connected to the steel tube herringbone column. When the frame beam and the steel tube herringbone column are fixedly connected, the column section is correspondingly reduced; the force is evenly applied at the mid-span and the support of the beam; the beam section is reduced, the beam and column can be coordinated to bear force, and the integrity of the frame structure is improved; the column top plate size and the number of stiffening plates are greatly reduced.

The invention relates to the technical field of submerged arc furnaces, and discloses a large energy-saving direct-current submerged arc furnace which comprises a bottom plate and a fixing frame arranged on the bottom plate. According to the large energy-saving direct-current submerged arc furnace, the particle size of ore is controlled through extrusion and crushing, materials are automatically stricken by a strickling plate, a conical rod rotates and guides, the particle size is screened according to intervals, and ferromagnetic impurities are removed through a magnetic attraction belt; the electrode and furnace lining loss is reduced; inert gas is introduced into an airflow plate of a heating furnace to strengthen stirring of a molten pool and promote full contact of effective components and a fluxing agent, a full-direct-current framework is adopted to eliminate alternating loss, a double-inverse-star-shaped non-in-phase inverse parallel topology is matched, and mutual counteraction of current and a magnetic field is utilized, so that the material with the particle size exceeding the standard is obtained. Copper pipe hysteresis and eddy current loss are reduced, the operating temperature is controlled, the topological multi-pulse rectification optimizes the current waveform, the reactive power is reduced, and a high-capacity reactive power compensation device is omitted; and meanwhile, the length of the short net is shortened, the conductor section is optimized, an additional heat dissipation pipeline is not needed, and energy consumption and investment are reduced.

The invention relates to a deep foundation pit cast-in-situ bored pile enclosure invasion reinforcing treatment structure and method. The structure is characterized in that water stop high-pressure jet grouting piles are arranged on the outer sides of enclosure piles, supports are arranged on the upper portion and the lower portion of a invasion area, a bottom plate cushion layer and a hidden beam reinforcing structure are adopted, and an anchor rod reinforcing structure is adopted for a soil layer of the invasion area. The method comprises the following specific steps of: (1) additionally driving high-pressure jet grouting piles on the outer sides of the deviated row piles for reinforcement; (2) after the foundation pit is excavated to the elevation of an upper layer of support in a invasion area, the sectional dimensions of original concrete enclosing purlins and concrete angle braces are enhanced; (3) when a bearing platform falling pit is excavated, the boundary invasion row piles are chiseled away while excavation is carried out; (4) in the chiseling process, reinforcing the pile foundation in the chiseling area by adopting a soil anchor rod method; and (5) after excavating to the bottom of the bearing platform pit, reinforcing the cushion layer in the area, and additionally arranging a concrete waist beam. The method can be used for solving the situation that the enclosure structure is beyond the boundary due to various reasons in engineering, the potential safety hazard of the enclosure structure is greatly reduced, and the subsequent construction cost is reduced.

The invention discloses a movable supporting device for tunnel construction and a tunnel construction method. The problems that in the prior art, underground excavation construction of underground engineering is high in price and tedious in working procedure are solved. The movable supporting device for tunnel construction comprises a double-layer sleeve mechanism and a pushing mechanism used for providing jacking of the double-layer sleeve mechanism. The pushing mechanism comprises an outer-layer pushing driving part and an inner pushing driving part; the double-layer sleeve mechanism comprises an outer-layer sleeve and N inner sleeves, and N is larger than or equal to 2; the inner sleeves correspond to the inner pushing driving parts, the outer pushing driving parts correspond to the outer sleeves, and the adjacent inner sleeves, the inner sleeves and the outer sleeves and the outer sleeves and the tunnel can move relatively under the action of the pushing mechanisms. The equipment adopted by the invention is simple, efficient and low in manufacturing cost; meanwhile, excavation equipment can be flexibly selected according to actual conditions, and the reusability of the excavation equipment is good; and large-scale engineering application is facilitated.

The utility model discloses a shield door bearing driving device which comprises a door machine beam and a guide rail, the door machine beam is formed by splicing a lintel beam and a middle beam, supporting feet used for being connected with stand columns are arranged at the two ends of the lintel beam and the two ends of the middle beam, and the guide rail is connected with the side wall of the door machine beam. In the utility model, the door machine beam and the guide rail adopt a splicing structure, the weight of each single body is reduced, the installation is easy, the length of each single body of the door machine beam is reduced to half of the initial length or even less, the section of the guide rail is reduced, and the transportation is convenient.

The utility model relates to the technical field of photovoltaic power generation, in particular to a center pillar structure of a flexible photovoltaic support and the flexible photovoltaic support. The center pillar structure comprises a pillar foundation, the pillar foundation comprises at least two center pillars arranged at intervals in the transverse direction, each center pillar comprises a bottom pile foundation and an upper pillar, the lower end of each upper pillar is hinged to the upper end of the corresponding bottom pile foundation, the hinge axis of each upper pillar and the corresponding bottom pile foundation extends in the transverse direction, and the lower end of each bottom pile foundation is used for being fixed to the ground; top balance beams extending in the transverse direction are arranged at the upper ends of the upper supporting columns, installation positions used for installing longitudinal horizontal inhaul cables are arranged on the top balance beams, and horizontal connecting rods are connected between the two opposite ends of every two adjacent top balance beams. The two adjacent rows of supporting systems can be connected through horizontal connection, the lower ends of the upper supporting columns are hinged to the upper ends of the bottom pile foundations, bending moment generated by the longitudinal horizontal inhaul cables can be released, the fracture damage risk of the middle stand columns is reduced, and the overall lateral force resisting capacity of the flexible photovoltaic support system is improved.

The utility model relates to the field of hydraulic transmission parts, in particular to a hydraulic torque converter with an offset arm, which comprises a shell, a pump wheel, a guide wheel, a turbine and a transmission shaft, the transmission shaft is inserted in the shell, one end of the transmission shaft is connected with the pump wheel through a first bearing, and the other end of the transmission shaft is provided with a transmission gear; a second bearing is additionally arranged at one end, close to the transmission gear, of the transmission shaft, and the transmission shaft is fixed in the shell through the second bearing; the guide wheel is fixedly installed in the shell, and the turbine is connected with the transmission shaft. The first bearings and the second bearings are used for carrying out cantilever type supporting on the transmission shaft, the first bearings are arranged in two rows, and the two rows of first bearings are distributed on the upper side and the lower side of the end of the transmission shaft in a clamping mode. The purpose of the utility model is to prolong the service life of quick-wear parts such as bearings and the like.

The invention discloses a settlement testing device for a rail transit comprehensive hub. The settlement testing device comprises a base, the upper side of the base is fixedly connected with a box body, one side of the box body is provided with a plurality of through holes, deformation sensors are arranged in the through holes, one side of the base is fixedly connected with a vertical plate, and one side of the vertical plate is provided with a soil screening device; the middle part of one side of the box body is fixedly connected with the measuring box, and one side of the measuring box is a visual scale plate; the upper end of the vertical plate is fixedly connected with a transverse plate, the transverse plate is provided with a multi-stage pressing device, and the multi-stage pressing device extrudes soil in the measuring box and the box body; the system further comprises a water spraying device and a station model, and the station model is embedded in the box body. The porosity of a construction site is simulated through the soil body in the box body, and test soil bodies with different depths and different porosities can be prepared, so that a pre-test is performed in a laboratory, and a proper construction scheme is conveniently formulated according to the characters of the soil bodies on different construction sites.

The invention belongs to the technical field of noodle processing, and discloses a method for processing high-calcium noodles, comprising a machine body, an operation box fixedly installed on the top of the machine body, a controller arranged on one side of the operation box, a conveyor belt arranged at the bottom of the operation box and located at the top of the machine body, a feed pipe arranged at the top of the operation box, a first pressing roller arranged at one end of the feed pipe and located at the top of the operation box, a second pressing roller arranged at the bottom of the first pressing roller and located inside the operation box, and two cutting rollers arranged at the bottom of the second pressing roller. When the processed noodles are cut, the first nozzle and the second nozzle are moved left and right by the action of the first motor, the threaded rod and the movable block, and the first nozzle and the second nozzle are driven to move up and down by the movement of the mounting block, so that flour or water can be sprayed on the noodles when they are cut, so as to prevent the noodles from being too dry or too wet when they are cut, keep the humidity of the noodles moderate, reduce the occurrence of cross sections when they are cut, and improve the effect of noodle processing.

The invention relates to the field of building structures, in particular to a spoke type single-layer rigid reticulated shell structure which comprises an inner ring beam, an outer ring beam and a plurality of inner ring beams. The outer ring beam is of a plane structure, and the plane where the outer ring beam and the plane where the inner ring beam are located are not coplanar; the web members are arranged between the inner ring beam and the outer ring beam and used for connecting and supporting the inner ring beam and the outer ring beam which are not coplanar. The inner ring beam and the outer ring beam which are not coplanar and the web members jointly form a reasonable spatial curved surface form, the overall structure is in a three-dimensional stress characteristic, an internal force self-balancing system is formed, only vertical force is transmitted to a lower supporting structure, and the bending moment effect is not generated. Compared with an existing frame and truss structure, the structure height of the support is smaller, the section of the lower supporting structure is smaller, and the structure is light, attractive and economical and applicable; compared with an existing spoke type tensioning structure, the tensioning structure is large in rigidity, small in deformation, easy and convenient to design and construct and higher in adaptability to a building envelope. The invention can be used for building roof structures.

The embodiment of the present application provides a composite structure for building reinforcement, which comprises a plate-shaped composite structure, wherein the plate-shaped composite structure is fixedly attached to the surface of a building and comprises a first fiber layer, a metal layer and a second fiber layer from the surface of the building outward in sequence; the plate-shaped composite structure has flexibility and changes with the shape of the surface of the building after being fixed to the surface of the building. The plate-shaped composite structure in the composite structure has the characteristics of low cross-sectional height, large unfolding area and stress dispersion, and has the advantages of good adhesion after being fully glued to the interface of the building, can effectively provide support, can provide rapid reinforcement and increase the bearing capacity for the building with small construction space, and is especially suitable for the installation of internal small-limit buildings and tunnels. The composite structure can very effectively, flexibly and quickly provide a new reliable option for the constructor, and realizes the life extension of the reinforced building.

The present invention discloses a pile column structure for a double steel pipe column pile for permanent and temporary combination, comprising: a double steel pipe column, a concrete pile and a measure steel pipe; the double steel pipe column comprises two steel pipes arranged in parallel and a plurality of tie plates welded between the two steel pipes, the bottom ends of the two steel pipes are welded with a column bottom cone, and the bottoms of the two steel pipes are welded with a plurality of shear hoops; a pile steel cage is arranged in the pile hole of the concrete pile, the bottom of the double steel pipe column goes deep into the pile hole, and concrete is poured in the pile hole to form a concrete pile, so that the double steel pipe column is embedded in the concrete pile; the top ends of the two steel pipes are welded with sealing circular plates, and they are respectively extended to above the ground by welding the measure steel pipes. The present invention has a column for two purposes, which is more environmentally friendly and economical than the traditional column pile, and has the advantages of simple structure, convenient installation and easy adjustment.

The present invention provides a water outlet and an air conditioner, wherein the water outlet comprises a nozzle body connected to the inside of a water collecting tank, an inner ring sleeve is fixedly connected to the inside of the nozzle body, a water flow channel is formed between the outer wall of the inner ring sleeve and the inner wall of the nozzle body, and an air flow channel is formed inside the inner ring sleeve; the liquid inlet of the nozzle body is connected to the inside of the water collecting tank, the air outlet of the inner ring sleeve passes through the liquid inlet and extends into the inside of the water collecting tank, the air outlet is higher than the liquid inlet, the accumulated water is discharged from the water flow channel under the action of gravity, when there is strong wind outdoors, the wind blows into the inside of the air conditioner from the air flow channel, because the air outlet is higher than the liquid level of the accumulated water, the air flow will not flow into the inside of the accumulated water, and therefore no bubbles will be formed inside the accumulated water. In addition, the inner ring sleeve can prevent snakes from entering the inside of the nozzle body from the liquid outlet.

The utility model discloses an automobile wire with ultrahigh terminal retentivity, which relates to the technical field of automobile wires and comprises an insulating layer, a plurality of conductor layers are arranged in the insulating layer, each conductor layer is formed by twisting a plurality of annealed soft copper wires, a plurality of sheath layers are detachably connected outside the insulating layer, each sheath layer comprises a lower sheath and an upper sheath, and the lower sheath and the upper sheath are respectively provided with an outer sheath and an inner sheath. The upper sheath is hinged to the upper end of the lower sheath, the end face, far away from the hinged position, of the lower sheath is fixedly connected with an embedded part, the end face, far away from the hinged position, of the upper sheath is provided with an embedded groove matched with the embedded part, and the two adjacent sheath layers are detachably connected. And if a certain part of the electric wire has a fault, a protective sleeve of the electric wire may be damaged to maintain the fault part, and the requirement of 50N of 0.35 mm < 2 > cannot be met.

The present invention belongs to the technical field of urban municipal road engineering, and particularly relates to a U-shaped prestressed open underground passage structure for urban roads, comprising a bottom plate mechanism, two groups of reinforcement mechanisms and two groups of crossbeam mechanisms; the two groups of reinforcement mechanisms are fixedly connected to the two ends of the bottom plate mechanism, the two groups of crossbeam mechanisms are fixedly connected to the bottom of the bottom plate mechanism, and the two groups of crossbeam mechanisms are symmetrically arranged with the central axis of the bottom plate mechanism as the center; the two groups of reinforcement mechanisms are distributed at the ends of the bottom plate mechanism, compared with the traditional large plate structure composed purely of vertical plates and horizontal plates, the cross section of the plate is reduced, and the reinforcement mechanism is used to increase the anti-floating effect of the overall structure, the combined use of the bottom plate mechanism and the reinforcement mechanism meets the requirements of post-tensioning prestressed construction, and the construction method is more flexible.

The utility model provides a workshop column structure of an aluminum electrolysis workshop, which comprises a workshop, a workshop foundation (1) arranged on the side surface of the workshop, and an electrolysis bath foundation (2) arranged in the workshop, and is characterized in that a steel reinforced concrete column (3) is arranged on the workshop foundation (1), a reinforced concrete column (4) is arranged beside the electrolysis bath foundation (2), and an operation platform (5) is arranged on the steel reinforced concrete column (3) and the reinforced concrete column (4). Compared with the prior art, the steel reinforced concrete pile is adopted as the plant column, the section of the reinforced concrete column is reduced, the concrete consumption is saved, the number of foundation bolts is reduced, the construction cost is saved, the construction is convenient, and the construction period is shortened.

The utility model provides an offshore photovoltaic booster station, which comprises a platform and a plurality of pipe piles, two groups of platform beams are arranged below the platform, the two groups of platform beams are vertically arranged, and each group of platform beams comprises a plurality of platform beams which are sequentially arranged at intervals; a plurality of tubular piles are sequentially arranged on each platform beam; the platform comprises a plurality of split decks; a main transformer, a firewall and secondary equipment are detachably arranged on the platform, construction operation can be achieved through a small floating crane and a crawler crane, limitation of water depth is avoided, and the engineering development requirement is met.

The application provides a charging socket, and relates to the technical field of charging accessories. The charging socket comprises at least two power terminals, the power terminals are provided with connecting end faces, at least two connecting assemblies, the two connecting assemblies are connected with the connecting end faces of the two power terminals in one-to-one correspondence, and at least four conductive pieces, at least one power terminal is connected with at least two conductive pieces through the connecting assembly. The application connects a single power terminal with multiple conductive pieces (such as at least two conductive pieces) through the connecting assembly, so that the charging power is increased. Compared with the method of increasing the charging power by using a single large-section wire, since the increased power and total current-carrying capacity remain unchanged, the single large-section wire is replaced by multiple conductive pieces, so that the cross-sectional area of each conductive piece is smaller than that of the single wire, the conductive piece with a small cross section is easier to prepare, and the cross section is smaller, so the conductive piece is easier to bend and wire, and assembly is facilitated.

The invention discloses a flexible combined type sealing device and a sintering circular cooler, and belongs to the technical field of sintering circular coolers. The sealing device comprises at least one flexible isolator sealing pressure regulating unit which is arranged in the moving direction of a trolley of the sintering circular cooler, and each flexible isolator sealing pressure regulating unit comprises a steel wire curtain layer capable of falling to the surface of sintered ore along with gravity, a fixing piece and a connecting piece, wherein the fixing piece and the connecting piece are used for connecting the steel wire curtain layer to the inner side of a smoke hood. The two rotatable bolts are arranged in the middle of the outer side of the air outlet pipe, the two iron wires on the two sides of the upper end of the steel wire curtain layer are made to ascend by rotating the two bolts, and therefore the whole steel wire curtain layer is made to ascend. And the air seal sealing pressure regulating unit is matched with the flexible isolation body sealing pressure regulating unit and can spray hot air to the two sides of the lower end of the steel wire curtain layer, so that air seal is formed between the two sides of the steel wire curtain layer and the trolley.

The application discloses a centrifugal fan air outlet structure, a fan applying the same and a combined fan, and belongs to the technical field of centrifugal fans. The centrifugal fan air outlet structure comprises an outer shell plate, an air outlet and an air inlet. The air inlet is arranged on one side wall of the outer shell plate. The other side of the outer shell plate is open to form an opening. The air outlet is arranged on one end of the outer shell plate. The centrifugal fan air outlet structure further comprises a wind guide part. The wind guide part is arranged on the upper edge of the outer shell plate connected with the air outlet. When viewed along the air outlet direction of the air outlet, the included angle between the inner side of the wind guide part facing the inner cavity and the horizontal plane is B, and 0° < B ≤ 15°. The flow rate difference of the air inlet is adjusted through the inclination angle of the wind guide part, so that the airflow turbulence at the outlet is reduced, the noise of the fan is reduced, and low-pressure surge is eliminated.

The utility model discloses a flexible photovoltaic support, and belongs to the technical field of new energy photovoltaic power generation. The flexible photovoltaic support comprises uplift piles, stand column piles and stay cables, the uplift piles are vertically arranged, the stand column piles and the uplift piles are oppositely arranged, and the stand column piles are higher than the uplift piles; rigid tie bars are connected between the stand column piles and the uplift piles, and steel cross beams are arranged at the tops of the stand column piles. One end of the stay cable is connected with the top of the uplift pile, the other end of the stay cable is connected with a triangular support, and the triangular support is connected with the steel cross beam. Construction workload can be reduced, and waste of materials is avoided; the problem that the construction workload is large due to the fact that two stay cables are connected with the uplift pile in the prior art is solved.

The utility model belongs to the technical field of new energy automobiles, and particularly relates to a ceramic fireproof liquid-cooled high-voltage cable for an electric automobile, which comprises a sheath layer, a shielding layer, an insulating layer, a conductor and a hollow pipe are arranged in the sheath layer, the shielding layer adopts an oxygen-free metal copper wire, the surface of the shielding layer is tinned, the purity of the copper material is required to be more than 99.99%, and the insulating layer is made of an insulating material. A braided layer is arranged inside the shielding layer, a layer of aluminum-plastic composite belt is wrapped outside the braided layer, the shielding layer is composed of the braided layer and braided copper wires, the braiding process is adopted for shielding, braided wires are 0.21 mm, and the braiding density is 85%. According to the ceramic fireproof liquid-cooled high-voltage cable for the electric vehicle, the cooling pipe made of the polyurethane material is added to the center of the conductor, so that the temperature of the conductor can be effectively reduced while the flexibility of the original conductor is ensured, the cross section of the conductor is smaller, the cost of the cable is lower, and the size is smaller; the fireproof performance of the cable is increased, and the current-carrying capacity of the cable can be increased through combined use.