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

The invention discloses an array bolt hoisting underframe. An underframe base is of a rectangular frame structure, wherein a bearing top plate and a side top plate are supported on the underframe through supporting plates, and the bearing top plate is higher than the side top plate; hook-shaped connecting plates are arranged at the two ends of the bearing top plate correspondingly and fixedly connected with the bearing top plate through array bolts, and a hoisting tool is welded to each hook-shaped connecting plate; and bearing supporting tables are arranged at the two ends of the side top plate correspondingly, and the bearing supporting tables are higher than the bearing top plate. The array bolt hoisting underframe is high in mechanical structural strength, a motor is supported stably,overall hoisting operation of the motor can be achieved, and the array bolt hoisting underframe is suitable for narrow operation space where the motor is difficult to disassemble and assemble.

The invention provides a preparation process of a sapphire photonic crystal fiber grating ultra-high temperature distributed sensor, comprising: Step 1, relying on the preparation process and technology of sapphire special material pipe rods to produce sapphire special material rods and sleeves; Step 2, based on The sapphire special material rod and sleeve provided in step 1 rely on the photonic crystal special fiber preparation process and technology to produce sapphire photonic crystal special fiber; step 3, based on the sapphire photonic crystal special fiber provided in step 2, rely on ultra-fast femtosecond Laser-engraved fiber grating preparation process and technology, manufacturing distributed fiber grating sensing units in sapphire photonic crystal special optical fibers; step 4, using high-temperature sensor packaging based on boron carbide high-temperature structural ceramic sleeves and high-temperature sensor packaging based on sapphire capillary tubes Technology, package and protect the sapphire photonic crystal special optical fiber with distributed fiber Bragg grating sensing unit provided in step 3, and prepare a sapphire photonic crystal fiber grating ultra-high temperature distributed sensor.

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 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.