21results about How to "Increase durability" patented technology

The invention relates to a control method for a driving motor in the gear shifting period of a gearbox of an electric vehicle, and the method comprises the steps that in the first stage of gear engaging stages, the driving motor is controlled to be in a rotating speed control mode, and the gear engaging stages are in the gear shifting period; in the second stage of the gear engaging stage, the driving motor is controlled to be in a free mode or a torque mode for requesting zero torque, and the second stage is located after the first stage; and in a third stage of the gear engaging stages, the driving motor is controlled to be in a motor torque control mode (a torque mode requesting small torque), and the third stage is located after the second stage. The invention further relates to a computer storage medium, a computer program product and a transmission control unit (TCU).

The present application relates to the technical field of tire simulation design, and particularly relates to an electric vehicle tire pressure sensitivity evaluation method, system, device and storage medium. The method constructs a low pressure, standard pressure and high pressure pressure disturbance working condition group under the same load, calibrates a steady-state rolling finite element model in combination with measured footprint data, establishes a same-name pattern block element mapping relationship based on a tread pattern topology, further calculates a front-rear edge difference index, a circumferential continuity index, an axial migration index and a relative standard pressure growth index, and realizes identification of shoulder dominant type and central three-zone dominant type river-like wear precursors. The scheme can provide a basis for tire inflation pressure setting, abnormal wear warning and product optimization.

According to the high-bearing-capacity polyurethane waterproof composite anti-vibration pad for the building and the construction method of the high-bearing-capacity polyurethane waterproof composite anti-vibration pad for the building and the construction method of the high-bearing-capacity polyurethane waterproof composite anti-vibration pad for the building, an upper waterproof layer, a lower waterproof layer and an elastic layer are matched and bonded into a whole, and all waterproof composite anti-vibration pads are bonded into a whole in a buckling and pressing lap joint mode; according to the utility model, the adverse effects of environmental vibration and underground water on sensitive buildings are eliminated, so that the adverse effects of vibration on normal work and life of people are weakened, the product is simple in structure, reliable in quality and simple in construction through factory-like standard production, traditional three construction procedures are reduced to one procedure, and the production cost is reduced. The method can greatly improve the field construction efficiency and construction quality, is suitable for vibration isolation and water prevention of foundations of all building types, and is convenient to construct and wide in engineering application prospect.

The application discloses a non-magnetic ring proportional pressure reducing electromagnetic valve for a hydraulic system, a first through hole, a second through hole and a first blind hole are formed in the valve body, a pressure relief hole and a pressure inlet hole are formed in the side wall of the valve body, the pressure relief hole and the pressure inlet hole are communicated with the first through hole, a working hole is radially formed in the side wall of the valve body, the inner end of the working hole is communicated with the first through hole, and the outer end extends to the outer surface of the valve body, a valve core is axially movably installed in the first through hole, and a fifth outer groove and a first annular protrusion are arranged on the outer periphery of the valve core, the first annular protrusion forms an annular gap with the inner wall of the first through hole, a coil assembly is arranged in the yoke, a stop iron is fixedly arranged in the yoke through a mounting plate, and a magnetic circuit optimization structure is arranged on the outer surface of the stop iron. The magnetic circuit optimization and the multiple anti-sticking and friction-reducing designs are integrated, the independent magnetic ring is cancelled, the structure is simplified, the electromagnetic force, the response speed and the service life of the electromagnetic valve are comprehensively improved, the processing difficulty is obviously reduced, and the application range of the electromagnetic valve is widened.

A motor is provided. A motor according to an aspect of the present invention includes: a cover; a first bearing coupled to the cover body; a rotating shaft rotatably coupled to the first bearing; a rotor coupled to the rotating shaft and disposed below the first bearing in the axial direction; a stator assembly disposed on the outside in the radial direction of the rotor; an impeller coupled to the rotating shaft and disposed below the rotor in the axial direction; a diffuser coupled to the cover body and disposed below the impeller in the axial direction; a second bearing coupled to a central region of the diffuser and to which the rotating shaft is rotatably coupled; the bearing support is arranged between the first bearing and the cover body; the elastic component is arranged between the bearing support and the cover body in the axial direction; the diffuser includes a plurality of diffuser ribs extending downward from a bottom surface.

The invention relates to the field of automobile manufacturing, in particular to a light-weight automobile condenser and electronic fan assembly. The assembly comprises the condenser, the electronic fan and the fixing frames, connection between the condenser and the electronic fan and connection between the assembly and an automobile are simplified into four fixing frames, assembly assembling is completed through the four fixing frames, the assembly quality, the assembly difficulty and the like are greatly reduced, meanwhile, a protection plate is arranged and fixed through a metal reinforcing ring, and the assembly is convenient to assemble and disassemble. The overall strength is ensured; and the clamping piece nut is further arranged, so that the electronic fan can be quickly mounted. On the whole, the assembly is simple in structure, the part machining cost, the storage and transportation cost, the assembly time and the like are all reduced, the durability life of the assembly large iron support is greatly prolonged, and the precision of installation points is also improved.

The objective of this invention is to improve the productivity of cylinder head manufacturing by water-cooling the chamber inserts in a low-pressure casting method using a mold with chamber inserts arranged on the inner side, where the cylinder head is manufactured using directional solidification. The solution is a method for manufacturing cylinder heads of internal combustion engines by low-pressure casting, comprising: arranging chamber inserts and cores, which depict the chambers of each cylinder on the inner side of the cylinder head, inside a mold that shapes the cylinder head; injecting molten metal from below the mold between the mold and the chamber inserts and cores; and water-cooling from above the mold, causing the molten metal to solidify from above to below the cylinder head. The chamber inserts, corresponding to the chambers of each cylinder, are integrally formed and have internal cooling water flow paths, with cooling water circulating during the molten metal solidification process.

The utility model belongs to the field of automobile electronic mechanical brake system discloses a kind of electronic mechanical brake system of driving and parking brake coupling based on gear belt, and the system includes: driving brake motor, belt wheel system, planetary gear train, parking brake motor and its transmission assembly, wherein, driving brake motor output end is fixedly equipped input gear, the output gear of belt wheel system is assembled in the sun gear input shaft of planetary gear train, gear belt is engaged between input gear and output gear, to realize deceleration and damping, planetary gear train is nested in the gear recess of output gear, driving brake torque is output via planet carrier output shaft, driving and parking brake share output shaft, compact structure, realize high transmission ratio, high torque output, meet electric vehicle high braking performance demand, gear belt has shock absorption and load sharing function, reduce noise, improve gear train durability life, double motor parallel arrangement and share output shaft design, significantly reduce axial and radial space, with high integration, high reliability and low maintenance cost advantage.

The invention discloses an automatic window opening machine, and relates to the field of window opening equipment. The automatic window opening machine comprises a box body, a driving assembly, a speed reduction chain assembly, a transmission chain assembly, an electromagnetic clutch component and a fluid damping component, the speed reduction chain assembly is jointly driven by the first driving part and the second driving part, so that the power and the cruising ability of the window opening machine are improved; during window opening work, the electromagnetic clutch component is switched to be in the state that the input end of the transmission chain assembly and the speed reduction end of the speed reduction chain assembly are connected and combined so as to implement window opening work. The acting force of transmission of the transmission chain assembly is damped by the fluid damping part, so that the force transmission effect of the transmission chain assembly is relieved, and the risk that the speed reduction chain assembly and the transmission chain assembly are damaged is reduced. According to the automatic window opening machine, buffering damping is provided for power attenuation or power reverse change through the fluid damping component, damage to a transmission structure can be reduced, the service life of the window opening machine can be prolonged, and the operation stability performance of the window opening machine can be improved.

A motor is provided. A motor according to an aspect of the present invention includes: a cover; a first bearing disposed on the inner side of the cover body in the radial direction; a rotating shaft rotatably coupled to the first bearing; a rotor coupled to the rotating shaft and disposed below the first bearing; a stator assembly disposed on the outside in the radial direction of the rotor; an impeller coupled to the rotating shaft and disposed below the rotor; a diffuser coupled to the cover body and disposed below the impeller; a second bearing coupled to a central region of the diffuser and to which the rotating shaft is rotatably coupled; the bearing support is arranged between the first bearing and the cover body in the radial direction; at least one part of the bottom surface of the first bearing is supported by the bearing bracket; at least a portion of a top surface of the second bearing is supported by the diffuser.

The utility model discloses a lifting mechanism for guiding a straight tube supporting rod. The lifting mechanism comprises a fixed base, the lead screw is installed at the upper end of the fixed base through a plane bearing and provided with a matched lead screw nut, and the lead screw nut is provided with a radially-protruding fixed end; the driving gear is connected with the lead screw through a spline; the guide shaft is installed on the fixed base, the lead screw nut is sleeved with the guide shaft, the fixed end of the lead screw nut is exposed, the guide shaft limits the lead screw nut in the radial direction, and a lead screw fixing base is arranged at the upper end of the guide shaft; the guide rail is sleeved on the guide shaft, the guide rail is fixed with the fixed end of the lead screw nut, and the guide rail is arranged on an automobile spoiler. According to the utility model, the lead screw and the lead screw nut are connected with the guide rail serving as the supporting rod, so that larger lifting torque can be provided, and the provided lifting force is 3-5 times of that of a connecting rod structure. In the aspect of appearance, the guide rail supporting rod is an integrated smooth surface, no mechanical group is exposed outside, the guide rail supporting rod is attractive, waterproof and dustproof, and the service life of the guide rail supporting rod is prolonged.

The utility model relates to a device that can change the color temperature of a lighting lamp, in detail, it is a landing searchlight color temperature adjustable device, is equipped with three primary color liquid color mixing subassembly, controller, water pump, electromagnetic valve, wherein three primary color liquid color mixing subassembly is equipped with three primary color liquid pipeline and high light transmission fixed plate, three primary color liquid pipeline includes 3N root main pipeline for respectively filling in red / green / blue liquid, N is positive integer, be equipped with M root capillary pipeline in the main pipeline, M is positive integer and M greater than or equal to 3, three primary color liquid pipeline adopts transparent flexible tube, three primary color liquid pipeline is coiled in high light transmission fixed plate, the control signal end of controller is connected with water pump, electromagnetic valve respectively, water pump and electromagnetic valve are connected with the inlet / outlet of three primary color liquid pipeline, compared with prior art, product practicality is improved, and product cost performance is high, and economic use nature is strong, has very strong market popularization and application value.

A motor is provided. A motor according to an aspect of the present invention includes: a cover; a first bearing coupled to the cover body; a rotating shaft rotatably coupled to the first bearing; a rotor coupled to the rotating shaft and disposed below the first bearing; a stator assembly disposed on the outside in the radial direction of the rotor; an impeller coupled to the rotating shaft and disposed below the rotor; a diffuser coupled to the cover body and disposed below the impeller; a second bearing coupled to a central region of the diffuser and to which the rotating shaft is rotatably coupled; the bearing support is arranged between the first bearing and the cover body; an elastic member disposed between the bearing holder and the cover body in the axial direction; and a support damper disposed between the bearing bracket and the cover body in a direction perpendicular to the axial direction.

The present application relates to a kind of gas manifold of substrate processing device, provide a kind of gas manifold of substrate processing device, for from gas source to the process chamber for carrying out substrate processing process provides process gas, comprising: the supply pipe of metal material, from the gas source extends to distribution body along up and down direction;Metal material inflow pipe, connect with the process chamber, for the process gas is flowed into the inside of the process chamber;The delivery pipe of ceramic material is between the distribution body and the inflow pipe, for process gas delivered by the supply pipe is delivered to the inflow pipe, can offset the thermal stress caused by compression or tensile displacement according to temperature change, to improve the durable life.

The vibration isolation block comprises a rubber sleeve and a metal framework, the rubber sleeve is fixedly connected to the outer side of the metal framework in a sleeved mode, chamfers are formed at the top and the bottom of the rubber sleeve in the Z direction, and the free ends, located at the two chamfers, of the rubber sleeve can move towards or away from the middle of the rubber sleeve. The chamfer is used for extending the distance between the top or the bottom of the rubber sleeve and the metal framework. According to the vibration isolation block, the chamfers are formed at the top and the bottom of the rubber sleeve, so that the distance between the top or the bottom of the rubber sleeve and the metal framework is prolonged, a space is reserved for movement of the free end of the rubber sleeve, namely extrusion of the rubber sleeve, the rubber sleeve is prevented from being pressed and sheared, and therefore the use durability of the vibration isolation block is improved.

The utility model discloses a manual folder for an outside rear-view mirror of an automobile, which relates to the field of folders and comprises a base, a positioning rotating shaft and a metal rotating shaft are sequentially sleeved in the base, a spring retainer ring is clamped on the outer ring of the metal rotating shaft, the spring retainer ring is in contact with a spring movably connected in the base, and the positioning rotating shaft is connected with the metal rotating shaft. The spring is movably sleeved on the outer ring of the metal rotating shaft; and the bottom of the spring is propped against a wear-resistant sheet arranged at the step opening in the base. A split type structure of an original rearview mirror is peeled into the manual folder, the client side structure and installation steps are simplified, so that cost is reduced, a metal rotating shaft lifting function is achieved, the installation mode and size of an original electric folder are reserved, a client side does not need to open a mold or change the installation mode, and the installation efficiency is improved. And the metal rotating shaft is fixed by the positioning rotating shaft and the base at the same time, so that the durability and the service life of the manual folder in the aspect of vibration performance are prolonged.

The application discloses a shock absorber piston valve limiting protection structure and relates to the technical field of shock absorber piston valves, which comprises a piston shaft, a piston is sleeved on the outer wall of the piston shaft, a rubber ring is sleeved on the outer wall of the piston, and four oil channel input ends and four oil channel output ends are arranged in the piston. The upper limiting gasket and the lower limiting gasket are arranged, the upper limiting gasket supports the deformation of the compression valve piece with a large outer diameter in the compression stroke, the durability of the compression valve piece is improved, the problem that the performance is excessively attenuated due to the deformation of the compression valve piece after durability is solved, the lower limiting gasket supports the deformation of the recovery valve piece with a large outer diameter in the recovery stroke, the durability of the recovery valve piece is improved, and the problem that the performance is excessively attenuated due to the deformation of the recovery valve piece after durability is solved.

The invention relates to the technical field of universal joints, in particular to a method for preventing early failure of a ball groove of a spherical constant velocity universal joint and the constant velocity universal joint, which mainly comprises the following steps of: vulcanizing the surface of a steel ball of the spherical constant velocity universal joint to generate a FeS compound layer on the surface of the steel ball; the FeS compound layer on the surface of the steel ball is transferred to the bearing area of the ball groove making contact with the steel ball in the working process of the spherical constant velocity universal joint, and a FeS lubricating layer is formed on the bearing area of the ball groove under the extrusion and friction action of the steel ball and the ball groove. The FeS lubricating layer has very high binding force with the surface of the ball groove, has very high bearing capacity, and can effectively avoid adhesive wear and scratch between the steel ball and the bearing area of the ball groove, so that the constant velocity universal joint can directly bear normal high working load without passing through the running-in process at the initial working stage, and the service life of the constant velocity universal joint is prolonged. And abrasion and early failure of the fairway are avoided.

The invention relates to the technical field of electric vehicle tire simulation design, in particular to an electric vehicle tire bead durability multi-objective optimization method and an electric vehicle tire bead durability multi-objective optimization system. According to the invention, a tire body, apex and a reversely-wrapped side tire body form a sandwich layer, a coupling boundary of a constraint area / active area and a rim is established, and a periodic load is applied according to a working condition of 4-15 Hz; and S11 and an interface shearing amplitude are extracted along the turn-up path, and a neutral surface and the stability thereof are determined by a surface with the minimum strain amplitude. The delta h, the layer thickness b1-b3, the modulus sigma1-sigma3 and the cord thread parameter c / rho / w serve as variables, the S11 and the shear amplitude are minimized through evolution / Bayesian optimization, the neutral surface variance is minimized, and a parameter nominal value and a tolerance window are output. The method gives consideration to both precision and efficiency, compression and shear peak values can be inhibited, the tire bead durability is improved, and the design period is shortened.

The invention relates to a two-stage pilot-operated type pedal simulator isolating valve for an integrated intelligent braking system, and belongs to two-stage pilot-operated type normally-closed electromagnetic valves of braking systems. Comprising a valve seat, a valve element, a valve element sheath, a filter screen, a valve body, a coil lower yoke, an armature, a spring, a coil winding, a coil framework, a plunger tube, static iron, a coil PIN, coil damping rubber, a coil shell yoke and a positioning column. The valve sleeve structure has the advantages that the structure is novel, the valve sleeve structure is integrated on the valve seat, the valve sleeve structure and the valve seat are integrated, a failure link and an assembly procedure are omitted, the assembly procedure is simplified, the assembly rhythm of a production line is accelerated, the installation space is reasonable, and the whole structure space is reduced; the PEEK valve element is small in conduction coefficient when collided with the valve seat and collided by the armature, excellent in NVH performance, non-magnetic, small in inertia and suitable for high-frequency PWM control.