61results about How to "Improve mechanical structure strength" patented technology

A bulge-bottom buffering metal structure is suitable for being disposed between a chip or a soldering pad for baseplate and a solder lug whose main component is tin-lead alloy. The said bulge-bottom buffering metal structure has at least one metal layer and one tuffing metal construction. This buffering metal construction can reduce or slow down the negative effect of electric and mechanical properties due to the generation of mesic metal compound when the metal layer combines with the solder lug. The metal layer disposed on the soldering pad of chip is composed of such components as Cu, Al, Ni, Ag or Au, etc. which may react on tin chemically, while the buffering construction disposed between the metal layer and the solder lug is used for reducing the possibility of generating the mesic metal compound between them.

The invention relates to a power battery module of an electric vehicle and an electric vehicle. The power battery module comprises cells, an upper cover, a middle end plate, two oppositely arranged end plates, and two oppositely arranged lateral plates. Two end plates are respectively welded to two lateral plates to form a shell without any bottom surface or a top surface. The middle end plate iswelded to two lateral plates so as to divide the interior of the shell into at least two installation cavities. Multiple cells are installed in each installation cavity. The upper cover is arranged onthe upper end of the shell. The overall installation structure is formed by connecting the middle end plate, the end plates, and the lateral plates, the number of stored cells is increased, the number of stored cells is equal to the number of cells of two or more individual modules, compared with two or more individual modules, the size is reduced in the length direction, the module length is increased, the occupied space is small, the uniformity of the module is increased, the inner space is saved, the whole structure of the module is more compact, the space utilization rate is increased, and thus the energy density and capacity of the whole battery system are both increased.

A solidifying agent for the used sludge of drilling well is proportionally prepared from powdered thioaluminate cement clinker, semi-hydrated gypsum powder, calcium lime, and polyacrylamide through grinding. Its advantages are short solidifying time, low cost and no secondary pollution.

The invention provides a preparation process of a sapphire photonic crystal fiber grating ultra-high temperature distributed sensor. The preparation process comprises a first step of producing a sapphire special material rod body and a sleeve by virtue of a sapphire special material tube rod preparation process and technology; a second step of producing a sapphire photonic crystal special opticalfiber based on the sapphire special material rod body and the sleeve provided in the first step through the photonic crystal special optical fiber preparation process and technology, a third step of producing a distributed fiber grating sensing unit in the sapphire photonic crystal special optical fiber based on the sapphire photonic crystal special optical fiber provided in the second step through ultra-fast femtosecond laser engraving fiber grating preparation process and technology, and a fourth step of producing the sapphire photonic crystal fiber grating ultra-high temperature distributedsensor by packing and protecting the sapphire photonic crystal special optical fiber with the distributed fiber grating sensing unit provided in the third step through high temperature packaging based on a ceramic casing pipe with boron carbide high-temperature structure and the high-temperature sensor packaging technology based on sapphire capillary tubes.

The invention relates to a UAV three-degree-of-freedom inflight autonomous refueling device, which is used for simulating simulated refueling emulation of two eight-rotor UAV in a UAV inflight refueling semi-physical emulation platform. The implementation method comprises the steps that: a refueling aircraft obtains an image of a receiver aircraft, utilizes an internal visual processing program of Intel NUC microcomputer (hereinafter referred to as NUC) modules installed through the UAVs to solve a position and attitude relationship between the two UAVs, and then transmits the position and attitude relationship to a SCM module in a refueling rod device through a communication protocol; and the SCM module completes information output, driving and instruction execution, and finally makes a refueling rod face towards the receiver aircraft at correct angle and attitude, thereby offering support for final docking.

The invention discloses a high-power high-reliability six-phase permanent magnet fault-tolerant hub motor used for an electric armored vehicle. The high-power high-reliability six-phase permanent magnet fault-tolerant hub motor comprises a stator assembly, a rotor assembly, a rotary shaft, a bearing, a machine shell, front back end covers, and a position sensor; the six-phase windings in the stator assembly adopt a fractional-slot and concentrated single-layer winding structure embedded with partition teeth, so that an electrical fault-tolerant structure can be formed between the phase windings; meanwhile, by combination of the dimensional design of the stator toothed groove structure, the phase winding inductance of the electric motor is increased, the short circuit current is suppressedeffectively, and reliability and fault-tolerant performance of the hub motor are improved; the rotor assembly adopts an internal permanent magnet rotor structure, and the outer side of the rotor is wound with a carbon fiber protection sleeve, so that the mechanical structural strength of the rotor is improved; the stator winding adopts a monocrystal copper wire or silver wire, so that stator lossof the hub motor is lowered; the permanent magnet of the rotor assembly adopts eccentric design, and is subjected to circumferential or axial sectioning processing, so that the rotor loss of the hub motor is lowered effectively; a Z-shaped or spiral heat dissipation water path is formed in the machine shell, so that the heat dissipation capability of the hub motor is improved; and the hub motor has high fault isolation, anti-short-circuit and weak magnetic diffusion capability, so that the requirements of high reliability, high power and high rotary speed of the hub driving of the electric armored vehicle can be satisfied.

The invention aims to provide a joint automatic control device for inner flaps / outer flaps of a hydrofoil catamaran. The joint automatic control device comprises a catamaran. Two sheets are respectively mounted at the left end and the right end of the lower side of the catamaran, a front hydrofoil is mounted at the front ends of the lower sides of the two sheets, a rear hydrofoil is mounted at the rear ends of the lower sides of the two sheets, a first outer flap, a second outer flap, a first inner flap and a second inner flap are respectively mounted at the rear end of the front hydrofoil by the aid of a first connecting shaft, a third outer flap, a fourth outer flap, a third inner flap and a fourth inner flap are respectively mounted at the rear end of the rear hydrofoil by the aid of a second connecting shaft, and the first outer flap, the second outer flap, the third outer flap, the fourth outer flap, the first inner flap, the second inner flap, the third inner flap and the fourth inner flap are respectively connected with respective servo motors. The joint automatic control device has the advantages that the joint automatic control device is simple in structure and reasonable in design, multifunctional and multi-objective cooperative control is implemented, and the safety, the seaworthiness and the maneuverability of the hydrofoil catamaran are improved; the front hydrofoil and the rear hydrofoil are respectively connected with the two sheets of the hydrofoil catamaran, so that the mechanical structural strength is improved.

The invention discloses a multi-spoke-ring gas and liquid separator, which is used for solving the problem of low removing rate of the gas and liquid separator in the prior art. The multi-spoke-ring gas and liquid separator comprises a mist removing bin through which water mist or oil mist can pass; the mist removing bin is internally provided with a rotation shaft which is driven to rotate by a motor; the axial direction of the rotation shaft is the same with the motion direction of the water mist or oil mist; a plurality of mist removing rings which rotate synchronously with the rotation shaft are fixed side by side on the rotation shaft; the plane of each mist removing ring is perpendicular to the axial direction of the rotation shaft; a plurality of radial mist removing spokes which are peripherally and uniformly distributed are fixed on each mist removing ring; the bottom of the mist removing bin is provided with a water collecting tank. The multi-spoke-ring gas and liquid separator is simple in structure, can effectively guarantee the mist removing effect by the plurality of mist removing rings which are arranged sequentially, and the number of the mist removing rings also can be set flexibly according to the humidity of the water mist so as to remove mist completely.

The invention proposes a coaxial feeding millimeter wave antenna based on thick and thin strip line conversion. The coaxial feeding millimeter wave antenna sequentially comprises a coaxial connector,a thick substrate strip line, a thin substrate strip line and a thin substrate strip line antenna from back to front, wherein the thick substrate strip line is formed by crimping four layers of substrates, and sequentially comprises the first layer substrate, the second layer substrate, the third layer substrate and the fourth layer substrate from bottom to top; the thin substrate strip line is formed by the second layer substrate, and the thin substrate strip line antenna is formed by the third layer substrate; a wide transmission line of the thick substrate strip line is positioned on the upper surface of the second layer substrate; a narrow transmission line of the thin substrate strip line is positioned on the upper surface of the second layer substrate; and side edges of the first layer substrate and the fourth layer substrate are provided with metal cladding. The coaxial feeding millimeter wave antenna solves the difficulty that a millimeter thin substrate strip line antenna feeding structure cannot be implemented by engineering or the performance thereof is about to be seriously deteriorated during the implementation process.

The invention belongs to the technical field of electromagnetism, and particularly discloses a high-strength parallel pulse magnet device which comprises a power supply module and a pulse magnet module. The pulse magnet module comprises a magnet unit, a supporting rod and two first reinforcing plates arranged at two ends of the supporting rod respectively. The magnet unit is arranged between the two first reinforcing plates and is electrically connected with the power supply module, and the supporting rod is arranged on a periphery of the magnet unit and is used for limiting and fixing plate layers with different heights so that the plate layers are coaxial and do not generate relative displacement. The magnet unit is composed of n groups of magnet coils connected in parallel. During work,an impedance of the pulse magnet module is reduced to 1 / n of the original impedance by the magnet coils connected in parallel under a condition that the number of turns of the coils is the same, a pulse current with higher intensity is obtained, and a magnetic field with higher intensity is induced. The magnet unit is axially separated through a second reinforcing plate, an axial stress of the magnet unit is shared, and mechanical structural strength of the whole pulse magnet device is improved.

The invention discloses an orthogonal dual-polarized metal slot antenna array structure and an antenna array containing the structure, and solves the problem in the prior art that high-temperature welding formation is adopted to cause poor antenna precision, resulting in reducing the yield, limiting by the welded aluminum alloy material and reducing the mechanical strength of the antenna, or the assembly formation of spare parts is adopted, resulting in increasing the weight of the antenna, reducing the mechanical strength of the antenna and increasing the number of structural parts that are independent of electromagnetic properties, so as to narrow the scope of application. The antenna array structure comprises an antenna bottom plate, and a sub-structure unit mounted on the antenna bottom plate and interposed by horizontal radiating unit pieces and vertical radiating element pieces. The antenna array includes an antenna array structure. The antenna array structure and the antenna array have the advantages of simple structure, scientific and reasonable design and convenient use, and can effectively ensure the accuracy of the antenna to improve the production yield, effectively improve the mechanical structure strength, reduce the weight of the antenna, and ensure the electromagnetic performance of the antenna array to expand the applicable range.

The invention relates to the technical field of heat dissipation, and discloses a manufacturing process for a lightweight vapor chamber and the vapor chamber. The manufacturing process comprises: connecting a condensation layer to the side surface of a structural layer to obtain a composite strip; stamping the composite strip to obtain a bottom plate with a first sealing portion and a first heat conduction portion; stamping the composite strip to obtain a cover plate with a second sealing portion and a second heat conduction portion, forming a support portion on the second heat conduction portion, and enabling the support portion to abut against the second heat conduction portion or other parts of the vapor chamber; connecting a heat conduction member to the condensation layer of the cover plate; sealedly connecting the first sealing portion to the second sealing portion, forming a heat conduction cavity for containing the heat conduction member between the second heat conduction portion and the first heat conduction portion, and meanwhile, clamping the heat conduction member between the second heat conduction portion and the first heat conduction portion; injecting working liquid into the heat conduction cavity, and sealing the heat conduction cavity. The vapor chamber manufactured by the manufacturing process for the lightweight vapor chamber not only has enough structural strength, but also is light in weight.

The invention discloses an axle box built-in subway bogie based on a flexible interconnection framework and an upper swing bolster, and belongs to the field of railway vehicle power bogie devices. The flexible interconnection frame comprises a wheel set device composed of wheels and axles, a horizontal and longitudinal integrated flexible interconnection frame, four annular vibration reduction axle boxes, an easy-to-withdraw shaft type gearbox, a side beam single-point suspension type motor, an integrated vibration reduction type swing bolster and a secondary suspension system. The damping requirement for the whole framework is greatly reduced, and the effects of reducing the number of parts, reducing the failure rate, releasing the layout space of a motor and a gearbox and releasing the maintenance operation allowance are achieved; on the premise of ensuring the mounting position and the vibration reduction index of the primary suspension axle box device, the transverse width size and the turning radius of the whole bogie are effectively reduced, the curve passing capacity of the bogie is further improved, and the annular vibration reduction axle box is convenient to mount, dismount and maintain; and after four fastening bolts are respectively dismounted, the side beam single-point suspension type motor can be directly and independently dismounted from the lower part of the vehicle body through the maintenance trench.

The invention discloses a transverse and longitudinal integrated non-power framework device with temperature-measurable axle boxes, and belongs to the field of railway vehicle framework devices. The transverse and longitudinal integrated non-power framework device comprises a transverse and longitudinal integrated interconnection framework and four annular vibration reduction axle boxes. The transverse and longitudinal integrated interconnection framework comprises two transverse and longitudinal integrated frameworks, and each transverse and longitudinal integrated framework comprises an integrated side beam and an integrated cross beam which are integrally formed. Each integrated side beam comprises a side beam middle section which serves as two bird wing connecting parts and is locatedat a lower position, and two bird-wing-shaped side beam cantilever sections which are symmetrically and fixedly connected to the two ends of the side beam middle section. On the premise that the installation position and the vibration reduction index of a primary suspension axle box device are guaranteed, the overall transverse width size and the turning radius of the bogie are effectively reduced, the curve passing capacity of the bogie is further improved, the vibration influence degree of the bogie on a vehicle body is reduced to the minimum, the balance stability and comfort of the vehiclebody are enhanced, the fatigue loss of the overall structure is effectively reduced, and the overall service life of the bogie and the vehicle body is greatly prolonged.

The invention relates to a substrate metal combined Vivaldi phased array antenna. The antenna sequentially comprises an upper-layer metal sheet antenna, an upper-layer substrate, a lower-layer substrate and a lower-layer metal sheet antenna from top to bottom. A Vivaldi substrate antenna is formed by crimping the upper-layer substrate and the lower-layer substrate, and comprises a micro-strip feeder line printed on the upper surface of the lower-layer substrate, a micro-strip fan-shaped stub line at the tail end of the micro-strip feeder line, and printing matching grooves and printing taperedslot lines which are printed on the lower surface of the lower-layer substrate and the upper surface of the upper-layer substrate; the upper-layer metal sheet antenna and the lower-layer metal sheetantenna are provided with metal matching grooves and metal tapered slot lines; the structural shapes of the metal matching grooves and the metal tapered slot lines are the same as those of the printing matching grooves and the printing tapered slot lines of the Vivaldi substrate antenna; the upper-layer metal sheet antenna is crimped to the upper surface of the upper-layer substrate; and the lower-layer metal sheet antenna is crimped to the lower surface of the lower-layer substrate. According to the invention, the unit directional diagram in the array is improved, the scanning airspace of thephased array antenna is expanded, the mechanical structure strength of the antenna substrate is improved, and the antenna deformation is reduced.

A bulk acoustic wave resonator with a mass adjustment structure comprises a supporting layer, a lower metal layer, a piezoelectric layer, an upper metal layer and a mass adjustment structure. The supporting layer is formed on a substrate. The supporting layer has a cavity, and the cavity has a top-inner surface. The lower metal layer is formed on the supporting layer. The piezoelectric layer is formed on the lower metal layer. The upper metal layer is formed on the piezoelectric layer. An acoustic wave resonance region is defined by an overlapping region of projections of the upper metal layer, the piezoelectric layer, the lower metal layer, the supporting layer and the cavity. The acoustic wave resonance region is divided into a peripheral region and a central region. The mass adjustment structure comprises a peripheral mass adjustment structure formed on the top-inner surface within the peripheral region.

The invention discloses a weaving framework for a conveying belt. The weaving framework comprises warp threads and weft threads, wherein the weft threads include upper-layer weft threads and lower-layer weft threads, the strand number of the warp threads is four, two strands of warp threads are alternatively woven with an uneven number of weft threads in the lower-layer weft threads and an even number of weft threads in the upper-layer weft threads in an opposite-direction mode, the other two strands of warp threads are alternatively woven with an uneven number of weft threads in the lower-layer weft threads and an even number of weft threads in the upper-layer weft threads in an opposite-direction mode, and two strands of warp threads are mutually staggered with the other two strands of warp threads to form a network. Compared with a framework structure in the prior art, the weaving framework for the conveying belt is higher in structural structure strength, the conveying belt including the framework can be connected by using the mode of a mechanical joint, is economic, convenient and quick, repeated calendaring and rubberizing in the conveying belt manufacturing process are not needed, the thickness of the conveying belt can be remarkably decreased, and the phenomenon that the conveying belt produces interlaminar glue failure after the joint forms an annular shape is avoided. The invention also discloses the conveying belt.

The invention relates to a method for processing the inner surface of a solar-thermal power generation thermal storage device. A layer of graphene nanofilm is formed on the inner surface of a structural material forming the solar-thermal power generation thermal storage device, is 0.05-2mu m in thickness, and is formed with a mechanical method, a chemical method and a surface spraying method. The mechanical structural strength of the thermal storage device is improved, the wear resistance and the corrosion resistance of the thermal storage device are improved, the material cost and the processing cost are reduced, and the service life of the thermal storage device is prolonged.

The invention relates to a rotor having an arc cutting structure. The rotor is used for being arranged in a stator of a motor, and comprises a rotating shaft, a rotor core and a plurality of sector-shaped magnets. The rotor core comprises a plurality of iron core parts and a plurality of magnet accommodating grooves, the iron core parts are mutually connected and integrally formed, and have a first circular arc, and the first circular arc corresponds to a first centre of curvature. The magnet accommodating grooves are sector-shaped, arranged among the iron cores parts, and correspond to a second circular arc, the second circular arc is connected to the first circular arc, and corresponds to a second centre of curvature, and the second centre of curvature is different from the first centre of curvature. The sector-shaped magnets are correspondingly accommodated in the magnet accommodating grooves.

The invention discloses a high-power high-reliability six-phase permanent magnet fault-tolerant hub motor used for an electric armored vehicle. The high-power high-reliability six-phase permanent magnet fault-tolerant hub motor comprises a stator assembly, a rotor assembly, a rotary shaft, a bearing, a machine shell, front back end covers, and a position sensor; the six-phase windings in the stator assembly adopt a fractional-slot and concentrated single-layer winding structure embedded with partition teeth, so that an electrical fault-tolerant structure can be formed between the phase windings; meanwhile, by combination of the dimensional design of the stator toothed groove structure, the phase winding inductance of the electric motor is increased, the short circuit current is suppressedeffectively, and reliability and fault-tolerant performance of the hub motor are improved; the rotor assembly adopts an internal permanent magnet rotor structure, and the outer side of the rotor is wound with a carbon fiber protection sleeve, so that the mechanical structural strength of the rotor is improved; the stator winding adopts a monocrystal copper wire or silver wire, so that stator lossof the hub motor is lowered; the permanent magnet of the rotor assembly adopts eccentric design, and is subjected to circumferential or axial sectioning processing, so that the rotor loss of the hub motor is lowered effectively; a Z-shaped or spiral heat dissipation water path is formed in the machine shell, so that the heat dissipation capability of the hub motor is improved; and the hub motor has high fault isolation, anti-short-circuit and weak magnetic diffusion capability, so that the requirements of high reliability, high power and high rotary speed of the hub driving of the electric armored vehicle can be satisfied.

The invention relates to vacuum equipment for vacuum welding or annealing of a semiconductor chip, and the equipment comprises a vacuum cabin and a vacuum cabin upper cover, and further comprises a translation mechanism, wherein the translation mechanism is connected with the vacuum cabin upper cover and can drive the vacuum cabin upper cover to horizontally move relative to the vacuum cabin; Theequipment also comprises a lifting mechanism which is connected with the vacuum cabin upper cover and can drive the vacuum cabin upper cover to move up and down relative to the vacuum cabin. The vacuum chamber upper cover can move up and down and horizontally relative to the vacuum chamber, the opening and closing door does not occupy the position of an input port, robot automatic feeding is moreconvenient, products can be vertically and automatically input, the top space of a welding area in the vacuum chamber can be increased, robot or mechanical arm automatic feeding and discharging are convenient, and the problem that horizontal input of heavy-load products easily causes scratching of the jig carrying table is effectively solved.

The invention discloses a non-power bogie with axle boxes capable of measuring temperature and a flexible interconnection framework, and belongs to the field of rail vehicle non-power bogie devices. The non-power bogie comprises a wheel set device composed of wheels and axles, a transverse-longitudinal integrated flexible interconnection framework and four annular vibration reduction axle boxes. The damping requirement for the whole framework is greatly reduced, and the effects of reducing the number of parts and the failure rate, releasing the layout space and maintenance operation allowance of a motor and a gearbox, simplifying the framework size and simplifying the manufacturing process are achieved; and on the premise that the mounting position and the vibration reduction index of the primary suspension axle box device are ensured, the transverse width size and the turning radius of the whole bogie are effectively reduced, the curve passing capacity of the bogie is further improved, and the annular vibration reduction axle box is convenient to mount, dismount and maintain.

The invention discloses a power bogie based on a novel motor suspension structure and a temperature-measurable axle box, and belongs to the field of railway vehicle power bogie devices. The power bogie comprises a framework, a wheel set device composed of wheels and axles, four annular vibration reduction axle boxes, an easy-to-retreat axle type gear box and a side beam single-point suspension type motor. On the premise that the installation position and the vibration reduction index of a primary suspension axle box device are guaranteed, the transverse width size and the turning radius of thewhole bogie are effectively reduced, the curve passing capacity of the bogie is further improved, and the annular vibration reduction axle boxes are convenient to install, detach and maintain; and after the four fastening bolts are disassembled respectively, the side beam single-point suspension type motor can be directly and independently disassembled from the lower portion of a vehicle body through an overhauling trench.

The invention aims to provide a joint automatic control device for inner flaps / outer flaps of a hydrofoil catamaran. The joint automatic control device comprises a catamaran. Two sheets are respectively mounted at the left end and the right end of the lower side of the catamaran, a front hydrofoil is mounted at the front ends of the lower sides of the two sheets, a rear hydrofoil is mounted at the rear ends of the lower sides of the two sheets, a first outer flap, a second outer flap, a first inner flap and a second inner flap are respectively mounted at the rear end of the front hydrofoil by the aid of a first connecting shaft, a third outer flap, a fourth outer flap, a third inner flap and a fourth inner flap are respectively mounted at the rear end of the rear hydrofoil by the aid of a second connecting shaft, and the first outer flap, the second outer flap, the third outer flap, the fourth outer flap, the first inner flap, the second inner flap, the third inner flap and the fourth inner flap are respectively connected with respective servo motors. The joint automatic control device has the advantages that the joint automatic control device is simple in structure and reasonable in design, multifunctional and multi-objective cooperative control is implemented, and the safety, the seaworthiness and the maneuverability of the hydrofoil catamaran are improved; the front hydrofoil and the rear hydrofoil are respectively connected with the two sheets of the hydrofoil catamaran, so that the mechanical structural strength is improved.

The invention provides an anti-impact structure and anti-impact equipment. The porosity of the anti-impact structure is gradually increased inwards along the outer surface; in a direction inward along the outer surface, a gradient of a porosity-position distribution function at an intermediate location of the impact resistant structure is greater than a gradient of a porosity-position distribution function at start and end segment locations. According to the anti-impact structure, the outer layer has lower porosity and higher elastic modulus and can bear larger stress, the inner layer has higher porosity and can have larger deformation space and can bear larger strain, the buffering effect of the inner layer is facilitated, and the overall strength of anti-impact protection equipment is guaranteed.

The invention discloses an aluminum-copper composite wiring terminal for an aluminum alloy high voltage cable, which comprises a copper alloy base body and wiring slots located at two ends of the copper alloy base body, wherein the connecting slots are of a U-shaped slot structure in cross section and symmetrically distributed about an axis of the copper alloy base body, the length of the connecting slots is 1 / 5-1 / 2 of the length of the copper alloy base body, the inner surface of each wiring slot is uniformly provided with an aluminum alloy lining, and the thickness of the aluminum alloy lining is 1 / 4-3 / 4 of the thickness of the side wall of the wiring slot. The preparation method comprises four steps such as copper alloy base body prefabrication, wiring slot preprocessing, aluminum lining positioning and wiring slot diameter expansion and wiring slot fine machining. On the one hand, the connecting structure strength, impact resistance, corrosion resistance and high temperature resistance between the wiring terminal and the cable can be effectively improved, and the mechanical structural strength of the wiring terminal is greatly improved; and on the other hand, the overload capacity of the wiring terminal can be effectively improved, the uniformity of current distribution is improved, so that the reliability and operation stability of power cable connection are greatly improved.

The invention discloses a novel dual-stator Halbach alternating pole permanent magnet vernier motor, comprising a first stator structure, a second stator structure and a rotor structure, wherein the rotor structure is arranged on the first stator structure and the second stator structure In the middle; the first stator structure and the second stator structure are stator structures with the same structure, and both include a stator core, and the stator core is provided with stator slots and stator teeth at uniform intervals in the circumferential direction, and the stator slots are embedded in the There is an armature winding, the tooth end of the stator is split into two modulation poles, and a Halbach permanent magnet array is arranged between the modulation poles; the rotor structure includes a rotor iron core, and the rotor iron core is provided with rotor slots at equal intervals in the circumferential direction , rotor permanent magnets are embedded between the rotor slots. The invention improves the air-gap magnetic density of the motor, effectively reduces magnetic flux leakage, and simultaneously achieves the purpose of reducing the amount of permanent magnets and enhancing the mechanical structure strength of the rotor.

The invention discloses an aluminum alloy high-voltage cable aluminum copper composite terminal. The aluminum alloy high-voltage cable aluminum copper composite terminal comprises a copper alloy substrate and connecting grooves formed in the two ends of the copper alloy substrate; the connecting grooves adopt a U-shaped groove-shaped cross section and are symmetrically distributed along the axis of the copper alloy substrate; the length of the connecting grooves is 1 / 5-1 / 2 of that of the copper alloy substrate; the inner surfaces of the connecting grooves are both distribute with aluminium alloy lining layers; and the thickness of the aluminium alloy lining layers is 1 / 4-3 / 4 of that of the connecting groove side wall; and the preparation method comprises four steps of copper alloy substrate prefabrication, connecting groove pre-processing, aluminum lining layer positioning, connecting groove diameter expansion and connecting groove fine processing. By virtue of the aluminum alloy high-voltage cable aluminum copper composite terminal and the preparation method thereof, the connecting structural strength, the impact resistance performance, the corrosion resistance performance and thehigh temperature resistance performance between the terminal and the cable can be improved effectively, so that the mechanical structural strength of the terminal is highly improved; and in addition,the overload capacity of the terminal is improved effectively, and current distribution uniformity is improved, thereby highly improving reliability and operational stability of the power cable connection operation.