7results about How to "Reduce radial thickness" patented technology

The utility model relates to the field of oil well sealing, in particular to an oil well sealing device. The oil well sealing device comprises a base pipe, extrusion rings are arranged at the positions, located at the two ends of each sealing ring, of the base pipe, at least one of the extrusion rings at the two ends of each sealing ring is slidably arranged on the base pipe in a sleeving mode, and the end face of at least one end of each sealing ring is in conical face fit with the end face of the corresponding extrusion ring. Due to the fact that the end faces of the sealing rings are matched with the conical faces of the end faces of the corresponding extrusion rings, when the extrusion rings are stressed to extrude the sealing rings in the middle, the sealing rings can expand outwards under the action of the conical faces till the sealing rings are expanded to the inner wall of the sleeve, and at the moment, the deformation amount of the sealing rings is equal to the radial thickness of the sealing rings. In other words, the radial thickness of the sealing ring can be reduced, and occupation on the inner diameter of the base pipe is reduced; therefore, the problems that in the prior art, a packer extrudes a rubber sleeve, the length of the rubber sleeve is reduced, the thickness of the rubber sleeve is increased, the initial thickness of the rubber sleeve is large, the inner diameter of a base tube is affected, and use of a setting tool is limited are solved.

The utility model provides a kind of bidirectional shaftless brushless motor based on electromagnetic field, including shell, double-end vertical magnetic core winding frame, front rotating shaft sleeve, rear rotating shaft sleeve, two bearings, control circuit, double-end vertical magnetic core winding frame includes support ring, winding column, sector plate, front rotating shaft sleeve, rear rotating shaft sleeve all include output sleeve, outer ring part, the both ends of double-end vertical magnetic core winding frame are provided with W-phase winding group, U-phase winding group, V-phase winding group, W-phase enameled wire, U-phase enameled wire, V-phase enameled wire are wound on different winding column respectively, W-phase enameled wire, U-phase enameled wire, V-phase enameled wire one end is connected and another end is electrically connected with control circuit, there are magnet on outer ring part and evenly distributed, can reduce the radial thickness of motor, can more greatly increase the passing space of airflow or water flow, and can realize front rotating shaft sleeve and rear rotating shaft sleeve same direction rotation or reverse rotation, satisfy multiple use requirements.

A motor rotor with an inner iron core and an outer iron core comprises a rotor shaft, the inner iron core and the outer iron core, the inner iron core is circumferentially fixed on the rotor shaft, a U-shaped magnetic steel groove is arranged between the outer iron core and the inner iron core, three pieces of magnetic steel are arranged in the U-shaped magnetic steel groove, the first magnetic steel and the third magnetic steel are symmetrically arranged on two sides in the U-shaped magnetic steel groove, and the inner iron core and the outer iron core are arranged in the U-shaped magnetic steel groove. Wherein the second magnetic steel is arranged between the first magnetic steel and the third magnetic steel and located at the groove bottom of the U-shaped magnetic steel groove, and the circumferential outer walls of the inner iron core and the outer iron core are wrapped with carbon fiber layers used for fixing the inner iron core, the outer iron core and the magnetic steel.

The utility model provides a kind of no shaft brushless motor based on electromagnetic field, including shell, vertical magnetic core winding stand, rotating shaft kit, bearing, W phase winding group, U phase winding group, V phase winding group, control circuit, vertical magnetic core winding stand includes support ring, several winding columns, several sector plates, rotating shaft kit includes output sleeve, outer ring part, outer ring part is located the upside of sector plate, W phase winding group is wound on winding column by W phase enameled wire according to the rule of winding every two winding columns apart, form, U phase winding group is wound on winding column by U phase enameled wire according to the rule of winding every two winding columns apart, form, V phase winding group is wound on winding column by V phase enameled wire according to the rule of winding every two winding columns apart, form, the bottom of outer ring part is uniformly distributed with b containing hole, magnet is set in each containing hole, the polarity of the bottom end of adjacent two magnets is opposite, can reduce the radial thickness of motor, improve the performance of motor.

The invention provides a mounting and positioning device and method for a marine diesel engine gearbox, and relates to the technical field of ship engineering.The mounting and positioning device comprises a first tensioning sleeve, a second tensioning sleeve and a double-thread screw, and the first tensioning sleeve is arranged on a guide shaft of a crankshaft in a sleeving mode; a first conical surface is formed on one side, far away from the guide shaft, of the first tensioning sleeve; the second tensioning sleeve is sleeved with an oil seal hole of the gearbox, and a second conical face is formed on the side, away from the oil seal hole, of the second tensioning sleeve. The second conical surface is matched with the first conical surface; the double-thread screw comprises a first stud and a second stud which are opposite in rotation direction, the first stud is in threaded fit with the first tensioning sleeve, and the second stud is in threaded fit with the second tensioning sleeve; when the double-thread screw rotates in the forward direction, the radial thickness of the first tensioning sleeve and the radial thickness of the second tensioning sleeve are increased so that tensioning can be achieved. On the contrary, the radial thicknesses of the two parts are reduced to realize loosening; the mounting and dismounting are convenient, and the mounting precision can be improved.

The application is suitable for the technical field of aerosol generating devices, and provides a liquid guide assembly, an atomizing core and an atomizing device. The liquid guide assembly comprises a first liquid guide and a second liquid guide. The first liquid guide is in an annular structure and is arranged around the second liquid guide. The first liquid guide comprises a first connecting section, a liquid guide main body and a second connecting section arranged in sequence. The thickness of the first connecting section and / or the second connecting section is smaller than the thickness of the liquid guide main body. The first connecting section and the second connecting section are connected in overlap to form the annular structure of the first liquid guide. The thickness of the first connecting section and / or the second connecting section is smaller than the thickness of the liquid guide main body, so that the radial thickness of the first liquid guide at the overlap connection is reduced. Through this structural design, the radial extrusion force of the first liquid guide on the inner second liquid guide is effectively reduced, and the possibility of local invagination or deformation of the second liquid guide due to extrusion is reduced.

The utility model provides a cooling oil injection ring, a motor and a vehicle, and relates to the technical field of vehicle parts. The cooling oil injection ring comprises a first ring section and a second ring section, the first ring section and the second ring section are connected end to end to form an annular structure, the inner diameter of the first ring section is larger than that of the second ring section, the second ring section is provided with an oil duct, and an oil injection hole communicated with the oil duct is formed in the inner side wall of the second ring section. According to the cooling oil injection ring, aiming at the characteristic that the radial size of the winding end part is non-uniformly distributed in the circumferential direction, the structure of the whole oil injection ring is optimized by adopting a sectional type variable inner diameter structural design, accurate adaptation to the winding end part is realized, the trafficability of the winding end part is ensured, and the service life of the oil injection ring is prolonged. And the problem that the oil injection ring cannot be arranged due to insufficient radial thickness of the oil injection ring is also avoided.