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113results about How to "Reduce bearing pressure" patented technology

Power steering system, speed reduction mechanism and bearing holder

[PROBLEMS] The object of the invention to provide a power steering system capable of ensuring a sufficient accuracy of meshed-engagement between toothed portions of a worm gear without complicated machining to be made to an inside of a housing.
[MEANS FOR SOLVING PROBLEMS] In a power steering system comprising a wormshaft (14), which is housed in a shaft housing portion (16) formed in a housing (11) and whose one end is rotatably supported by a first bearing (18a), a worm wheel (15) adapted to mesh with the wormshaft, a bottomed, substantially cylindrical bearing holder (21) configured to enclose and fit onto the first bearing for holding the first bearing, and a preloading means located in the bearing holder for preloading the first bearing in a direction of meshed-engagement of the worm gear, an adjustment-mechanism housing portion (40) is formed at one end of the shaft housing portion for housing and retaining the bearing holder, and a restriction wall (40a) is formed in the adjustment-mechanism housing portion (40) and arranged coaxially with the shaft housing portion for restricting a movement of the bearing holder at least in an opposite direction, which is opposite to the direction of meshed-engagement of the worm gear, and in a direction perpendicular to the opposite direction.
Owner:HITACHI LTD

Manufacturing process for bearing plate of planetary carrier of automobile CVT automatic transmission

ActiveCN107186450AThe technical route of the manufacturing process is reasonableImprove tooth surface strengthGearing detailsAutomatic transmissionGraphite
The invention discloses a manufacturing process for a bearing plate of a planetary carrier of an automobile CVT automatic transmission. The manufacturing process comprises the following steps: (1) blanking; (2) blank making before warm forging; (3) shot blasting; (4), warm forging and extrusion forming: heating a blank to 210+/-20 DEG C, coating graphite, then continuing to heat to 820-860 DEG C, firstly upsetting and extruding and then performing backward extrusion forming to form a round plate and forming a metal ring vertically extending to one side on the edge of the circumference of the round plate, and then punching a central hole of the round plate; (5) residual heat annealing; (6) blank making and shot blasting after the warm forging; (7) lubricating treatment; (8) outer tooth forming by cold forging extrusion: placing the lubricated blank into a female die, and performing cold extrusion to form an outer gear ring; and (9) nitriding, wherein an effective oxide layer on the surface has a depth of 0.007-0.3mm. The manufacturing process is reasonable in technical route, metal flows are not cut off, a tooth surface strength of the product is high, raw materials are saved, and the production efficiency is high.
Owner:江苏威鹰机械有限公司

Novel deburring device for ceramic dielectric chip of high-voltage ceramic capacitor

The invention discloses a novel deburring device for the ceramic dielectric chip of a high-voltage ceramic capacitor. The novel deburring device comprises a workbench and is characterized in that an air cylinder is vertically connected to the left side of the top of the workbench, a hanging bracket is connected to the top end of the air cylinder in a threaded and sleeved manner, a vertical upper support column is connected to the right side of the bottom of the hanging bracket, a horizontal lower pressing plate is connected to the bottom of the upper support column, a pressure center is embedded into the center of the bottom of the lower pressing plate, an upper die seat is rotatably connected to the outer side of the lower pressing plate through a slide rail, upper cutters are evenly symmetrically connected to the inner side of the bottom of the upper die seat, and a vertical annular positioning pin is arranged on the outer side of each upper cutter. The novel deburring device is simple in structure, stable and reliable, convenient to mount and demount, simple to operate, capable of simultaneously performing even and thorough chamfering on the top and the bottom of the ceramic dielectric chip, capable of stably fixing the ceramic dielectric chip, capable of preventing the displacement of upper and lower die seats, capable of increasing chamfering quality, capable of reducing motor bearing pressure and load and capable of increasing equipment operation stability.
Owner:SUZHOU HONGQUAN HIGH VOLTAGE CAPACITOR

Elevator mounting device assembly capable of being used for shaft-free building and elevator mounting method

The invention discloses an elevator mounting device assembly capable of being used for a shaft-free building and an elevator mounting method. The elevator mounting method comprises the following steps that 1), bottom steel plates are laid; 2) a first set of supports and a degree-of-parallelism guiding rule are mounted; 3), a second set of supports and a degree-of-parallelism guiding rule are further mounted; 4), a third set of supports and a degree-of-parallelism guiding rule are further mounted; 5), fixed mounting of later support sets and top supports is further completed; 6), the top supports and the top floor are fixedly connected; 7), elevator guide rails are mounted on box iron; 8), mounting of an elevator car and a counterweight device is completed; 9), support fixing pull rods are mounted; and 10), a traction machine platform is mounted, and system debug is conducted. By means of the elevator mounting device assembly and the elevator mounting method, the elevator transformation mounting of the shaft-free building in an old type community can be completed, and the elevator mounting device assembly and the elevator mounting method have the beneficial effects that on the premise of guaranteeing the operating stability and safety of an elevator, the structure is simple and practical, the occupied space is small, and mounting is convenient and accurate, and the safety factor in the mounting process is higher.
Owner:FUJI ELEVATOR SICHUAN CO LTD

Vibration reducing and pressure bearing damping structure for blade root platform of movable blades

InactiveCN105156155ACentrifugal force does not increaseReduce vibrationBlade accessoriesMachines/enginesImpellerEngineering
The invention discloses a vibration reducing and pressure bearing damping structure for a blade root platform of movable blades. The vibration reducing and pressure bearing damping structure for the blade root platform of the movable blades comprises an impeller, the movable blades and a plurality of damping blocks. The blade roots of the movable blades are mounted on the impeller. A plurality of impeller grooves and a plurality of blade root platform grooves matched with the impeller grooves are formed in the impeller and the blade root platform of the movable blades respectively. Each impeller groove and the corresponding blade root platform groove form an installation groove. The multiple damping blocks are sequentially mounted in the corresponding installation grooves. During operation, the damping blocks make close contact with the blade root platform, so that dry friction damping is formed; when the blades are subjected to shock excitation under the action of airflow force, the damping blocks move relative to the contact surfaces between the damping blocks and the blade root platform, so that dry friction force is generated, the vibration level of the blade root platform is reduced, and vibration reducing effect is achieved. Meanwhile, not only all teeth of the impeller make contact with the blade roots to bear the centrifugal force of the blades, but also the damping blocks make contact with the blade root platform to share the centrifugal force of the blades. The vibration reducing and pressure bearing damping structure for the blade root platform of the movable blades is simple, convenient to assemble and disassemble, and capable of effectively increasing the damping of the blade root platform, reducing the vibration of the blades and improving the safety stability of a unit.
Owner:XI AN JIAOTONG UNIV

Flower wax, honey and flavone part extracted from byproduct in abelmoschus manihot pharmaceutical manufacturing process, as well as preparation method and application thereof

The invention discloses flower wax, honey and flavone part extracted from a byproduct in the abelmoschus manihot pharmaceutical manufacturing process, as well as a preparation method and application thereof. According to the preparation method, in the abelmoschus manihot preparation producing process, precipitate and suspension which are separated after the extracting liquid obtained by hot ethanol extraction is coolec are used as raw materials, and are extracted with a low-polarity organic solvent; the solvent is reclaimed from the extracting liquid, and saponified to prepare flower wax; the remained residue is separated with polyamide column chromatography to respectively prepare honey and flavone part to respectively prepare functional cosmetic matrix, health-care soap base, livestock and poultry health feed and anti-oxidation functional products. By adopting the method, the byproduct generated in the abelmoschus manihot preparation producing process is used as the raw material and separated to prepare available substances, so that waste is turned into valuables, and resource utilization can be achieved. The preparation method is low in raw material cost, can provide an approach to harmless effective disposal of waste, and lays a foundation for sustained development and industrial chain recycling of abelmoschus manihot medicinal resource industry.
Owner:NANJING UNIVERSITY OF TRADITIONAL CHINESE MEDICINE +1

Abelmoschus manihot stem and leaf polysaccharide and preparation method and application thereof

The invention discloses an abelmoschus manihot stem and leaf polysaccharide and a preparation method and an application thereof. The preparation method comprises the steps: extracting, carrying out ethanol precipitation, carrying out chromatography purification with a macroporous adsorption resin column, separating with a hollow cellulose membrane, carrying out chromatography separation with a DEAE cellulose resin column, collecting target fractions, carrying out desalting treatment, freeze-drying, and thus obtaining the abelmoschus manihot stem and leaf polysaccharide. The abelmoschus manihot stem and leaf polysaccharide has the weight-average molecular weight of 13821 Da and is composed of rhamnose, mannose, galactose, galacturonic acid, glucose and arabinose, and the molar ratio of rhamnose to mannose to galactose to galacturonic acid to glucose to arabinose is 1 to 0.53 to 0.12 to 0.05 to 0.16 to 0.03; the abelmoschus manihot stem and leaf polysaccharide has a good immune enhancing activity, and can be used for development of immune enhancing drugs and health food. Stem and leaf waste resources produced in a production process of abelmoschus manihot medicinal materials are used as raw materials, the polysaccharide substance having the immune activity is separated, and a basis is laid for cyclic utilization of the traditional Chinese medicine resources.
Owner:NANJING UNIVERSITY OF TRADITIONAL CHINESE MEDICINE

Glass fibre reinforced plastic sand inclusion well chamber

InactiveCN101381999AExcellent corrosion resistanceExcellent waterproof and anti-penetration performanceSewerage structuresCorrosionEngineering
The invention relates to the technical field of drainage well chamber, in particular to a well chamber of glass fiber reinforced plastic sand inclusion. The invention comprises the well chamber and a cover plate, and the well chamber is formed by winding reinforced thermosetting resin quartze sand inclusion with glass fibers, wherein the upper part of the well chamber body is provided with the cover plate, and the lower part of a well chamber main body is provided with a base plate; and the well chamber main body is provided with a water distributed pipe interface. Compared with the prior well chamber, the well chamber has the characteristics of excellent corrosion resistance and long service life, excellent watertight anti-permeability performance and no leakage forever; roughness of the inner surface is far lower than that of the prior well chamber, and the well chamber further has the characteristics of high compressive strength, short construction period, light deadweight, low requirement on basic bearing capacity, and can be operated with water and can regularly desilt without dead corner. The well chamber has the advantages of simple structure, large water-collecting amount, small measuring pressure, large bearing capacity, small absolute roughness of the inner surface, and large circumferential and axial tensile strengths. Once entering the market, the product brings the considerable economic effect and social benefit to the field with promising market prospect.
Owner:沈阳骅飞管业有限公司

High-rise type suspension type micro-vibration equipment construction structure and construction structure

The invention provides a high-rise type suspension type micro-vibration equipment construction structure. The structure comprises a rigid supporting structure, an air floatation control system and ananti-micro-vibration T-shaped table (16); the rigid supporting structure comprises a foundation beam structure, a first-layer supporting structure and a second-layer supporting structure, wherein a foundation beam is connected with the first-layer supporting structure through first-layer supporting columns (3), the first-layer supporting structure and the second-layer supporting structure are connected through second-layer supporting columns (10), the first-layer supporting columns (3) are connected with the foundation beam, and the six circular-section concrete stand columns are arranged in total; the air floatation control system comprises an air floatation system (14) and a limiter (15); the air floatation system (14) is an independent air spring structure and is composed of a mechanical height valve, a main air chamber, an additional air chamber, an air inlet and an air outlet; the limiter (15) is arranged between the anti-micro-vibration T-shaped table (16) and the air floatationsystem (14); and the anti-micro-vibration T-shaped table (16) provides a supporting platform structure with a certain balance weight and a rigid body characteristic for the air floatation system (14),and radar detection equipment is placed on the anti-micro-vibration T-shaped table (16). The invention further provides a corresponding equipment construction method.
Owner:SINOMACH

Coal pillar-free coal mining method with integrated support for mining with flexible cover support in steeply inclined medium-thick coal seam

The invention discloses a flexible shield support excavation integrated supporting coal-pillar-free mining method of a steep medium-thickness coal seam. Flexible shield supports the same as those on a working face are used in a section drift for supporting; flexible shield supports of a section air return drift above the working face are naturally transited into the working face; flexible shield supports in the working face are naturally transited into a goaf below the working face to be maintained into a section transport drift which serves as an air return roadway of a lower section; the section air return drift is not tunneled any longer during recovery of the lower section; at the same time, a procedure of mounting and removing the flexible shield supports on the working face is canceled; mounting and removal of chambers and roadways related to subsidiary transport on the working face are canceled; the workload is reduced; the yield is increased; the advance speed of the mining working face is increased; normal replacement between the upper and lower sections is ensured; section coal pillars are canceled; a recovery ratio is increased; the natural fire danger in the goaf is reduced; and a reliable safety assurance is provided for the recovery work.
Owner:SHANDONG HUASHUO ENERGY SCI & TECH CO LTD
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