49results about How to "Affects structural strength" patented technology

The invention provides an electric connector and a manufacturing method thereof. The electric connector comprises an insulating body, a central grounding piece and terminal assemblies. The insulating body is provided with a butt joint part, a main body part, an upper accommodating cavity and a lower accommodating cavity, wherein the upper accommodating cavity is formed on the upper side of the main body part, and the lower accommodating cavity is formed on the lower side of the main body part. The butt joint part comprises an accommodating space which is open forward, a top wall, a bottom wall and two side walls. The central grounding piece is fixed in the main body part. Each terminal assembly is provided with an insulating block arranged in the upper accommodating cavity or the lower accommodating cavity, electric conduction terminals fixed in the insulating block and a latch spring piece, wherein the latch spring piece is arranged outside the electric conduction terminals; the latch spring piece is provided with a fixed part fixed in the insulating block, a latch arm which extends from the front side of the fixed part into the accommodating space in a protruding manner, and an extending arm which is formed through extension from the rear side of the fixed part; and each electric conduction terminal is provided with a contact arm which protrudes forward into the accommodating space.

The invention discloses a construction method of a concrete structure external wall with a built-in thermal insulating layer. The construction method comprises the steps of putting polystyrene plates among multiple layers of reinforcing meshes, obliquely inserting reinforcing steel bars in three-dimensional direction, welding the steel bars to obtain a thermal insulating wire rack board, and simultaneously pouring concrete on both internal and external sides to form a structural system. The specific construction method comprises the steps of: fabricating the thermal insulating wire rack board, banding external wall boundary members (embedded columns) and external wall board steel bars, installing the thermal insulating wire rack board, connecting steel bars around the thermal insulating wire rack board and laying pipelines, installing and fixing steel struts on the inner side of the thermal insulating wire rack board and cushion blocks on the outer side of the thermal insulating wire rack board, erecting inner templates for an external wall, erecting outer templates for the external wall, testing, simultaneously pouring concrete at both the internal side and the external side, removing templates, and curing. The inventive concrete structure external wall with the built-in thermal insulating layer has the advantages of solid connection, good sound insulating and thermal insulating effects, long service life, simple construction method, good shock resistant effect, short construction time, environmental friendliness, low construction cost, and good social and economic benefits; and is suitable for various urban residential buildings.

The invention discloses a car body underframe assembly and its welding process. The process adopts a modularized production method to complete the assembly and welding of the driver's cab end underframe and the two-position end underframe respectively, and then hoist the above two The end chassis and the side beams of the chassis on both sides are attached to the base plate to complete the pre-assembly and positioning of the chassis frame; finally, parts are added on the basis of the chassis frame, and the front welding and reverse welding are completed successively to form the vehicle. Body underframe assembly; the welding is all using CMT pulse cold transition process. The present invention adopts a modular process, divides the bottom frame into three large modules, and each large module has different small modules, and carries out blanking, processing and distribution of materials according to the modules. The site is clean and the process is clear, effectively avoiding The phenomenon of wrong installation and missing installation. The invention also discloses a vehicle body underframe assembly.

The present invention relates to an inner rotor motor, a rotor of the inner rotor motor and a size selection method thereof. The rotor comprises a rotating shaft, an iron core and a plurality of permanent magnets. The iron core comprises a magnet yoke part and a plurality of magnetic pole parts. The magnet yoke part is combined with the periphery of the above rotating shaft, the plurality of magnetic pole parts are arranged at the periphery of the magnet yoke part along a circumferential direction, and an accommodating groove is formed between two adjacent magnetic pole parts in the circumferential direction. The permanent magnets are arranged in the accommodating grooves respectively, wherein the magnetic pole end faces are formed at the sides of the magnetic pole parts far away from the rotating shaft, and the magnetic pole end faces of the magnetic pole parts extend in the circumferential direction to form a peripheral surface having an area. Each above permanent magnet comprises two first surfaces facing the magnetic pole parts, a second surface facing the above magnet yoke part and a third surface far away from the magnet yoke part, the two first surfaces, the second surface and the third surface have an area sum, and the ratio of the area sum and the area of the peripheral surface is between 0.15 and 0.36.

The invention discloses an emergency method and emergency equipment for failure of a power unit of a ship moving trolley, belonging to the technical field of ship heavy industry. The emergency method includes the steps: S1, preparing a spare power unit adapted to the boat-moving trolley; S2, after the power unit of the boat-moving trolley fails, keeping the jacking device of the boat-moving trolley in a pressure-holding state; S3, Disassembling the pipeline connecting the failure power unit of the ship moving trolley to the jacking device, and connecting the pipeline of the backup power unit to the jacking device. The emergency equipment includes a spare power unit adapted to the boat-moving trolley, and the spare power unit includes a power device that can be connected to the jacking device of the boat-moving trolley. The emergency method for the failure of the power unit of the ship-moving trolley realizes rapid replacement of the power unit of the boat-moving trolley failure; and the emergency equipment for the failure of the power unit of the boat-moving trolley has low cost, convenient operation and strong applicability.