58results about How to "Not easy to cause wear and tear" patented technology

The invention relates to a surface-type millimeter wave scanning three-dimensional holographic imaging safety check system which comprises a millimeter wave signal emission driving module, a millimeter wave signal acquisition module, a millimeter wave signal processing module, a millimeter wave emission antenna and a millimeter wave reception antenna. The millimeter wave emission antenna and the millimeter wave reception antenna form a surface-type millimeter wave antenna array, wherein the surface-type millimeter wave antenna array is used for scanning a region to be detected; the millimeter wave emission antenna is connected with the millimeter wave signal emission driving module; the millimeter wave reception antenna is connected with the millimeter wave signal acquisition module; and the millimeter wave signal processing module is connected with the millimeter wave signal acquisition module. According to the surface-type millimeter wave scanning three-dimensional holographic imaging safety check system, through the surface-type millimeter wave antenna array, single scanning time is greatly reduced; and meanwhile, since equipment does need to be subjected to mechanical rotation, equipment wearing is not easy to cause, service time of the equipment is substantially prolonged and equipment fault is reduced.

The invention discloses a sisal hemp glass fiber composite reinforced organosilicone modified phenolic aldehyde molding material which comprises 35-70% of organosilicone modified thermoplastic phenolic resin, 5-45% of glass fiber and sisal hemp mixed fiber, 5-45% of packing material, 0.5-3% of demolding agent, 0.25-1.5% of coloring agent and 2-10% of curing agent. The invention further provides apreparation method of the sisal hemp glass fiber composite reinforced organosilicone modified phenolic aldehyde molding material. The sisal hemp glass fiber composite reinforced organosilicone modified phenolic aldehyde molding material is prepared by mixing the components, smashing or granulating and other working procedures. The phenolic aldehyde molding material prepared by using the method islong in storage time, not apt to become damp, excellent in weather fastness, small in relative density and low in production cost; and the cured material is excellent in toughness and heat resistance. Plastic parts made of the organosilicone modified phenolic aldehyde molding material have the characteristics of being long in storage time, good in toughness, small in relative density, and excellent in heat resistance.

The invention discloses a sliding block switching device. The sliding block switching device comprises a base, a winding wheel mechanism, a speed reduction mechanism and a locking mechanism are sequentially arranged on the base, and the winding wheel mechanism and the locking mechanism are in transmission connection with the speed reduction mechanism; the locking mechanism comprises a locking cam, a swing rod and locking sliding blocks, the swing rod is hinged to the base and provided with a self-resetting mechanism, the locking sliding blocks are connected to the base in a sliding mode, the self-resetting mechanism is arranged between the locking sliding blocks and the base, a touching and pressing structure is arranged between the locking cam and the swing rod, a self-locking structure is arranged between the locking cam and the locking sliding blocks, and the winding wheel mechanism and the locking cam are rotationally connected to the base; the winding wheel mechanism comprises a winding wheel and an unlocking auxiliary mechanism capable of releasing self-locking of the locking cam, and the winding wheel mechanism is further provided with a winding wheel locking structure limited by the swing rod. The invention further discloses a shutter rope winder applying the sliding block switching device.

The invention relates to the technical field of automobiles, in particular to a friction clutch for an automobile. In the friction clutch, a drive part is composed of a flywheel, a press disc and a clutch cover, a driven part is composed of a driven disc friction plate, a driven disc and a driven shaft, a compaction device is composed of a press spring, a control mechanism is composed of a release lever, a release shift fork, a pedal, a pull rod, a pull rod adjusting fork, a return spring, a release bearing and a first return spring, the middle part of the release lever is supported on a fulcrum of the clutch cover. The friction clutch is simple in structure and is difficult to be abraded during practical application, the service time of the clutch is increased, the maintenance rate is reduced, and economic benefit is brought.

The invention discloses a glass fiber reinforced organic silicon modified phenolic molding material and a preparation method thereof. The phenolic molding material comprises the following components in percentage by weight: 35-70 percent of organic silicon modified thermoplastic phenolic resin, 5-45 percent of glass fiber, 5-30 percent of wood powder, 5-45 percent of filling material, 0.5-3 percent of release agent, 0.25-1.5 percent of coloring agent and 2.5-10 percent of curing agent, and the above components are mixed, crushed or graduated and the like to obtain the phenolic molding material. The obtained phenolic molding material has the advantages of long storage time, uneasiness in wetting, excellent weathering resistance, small relative density, low production cost and excellent toughness and heat resistance of solidified materials. A plastic part made by utilizing the phenolic molding material has the characteristics of good mechanical property, good toughness, small relative density, high thermal deformation temperature and the like.

The invention relates to a stirring head for friction stir welding of a special material and a welding method. The stirring head comprises a shaft shoulder and a stirring needle which is arranged in the center of the bottom of the shaft shoulder and protrudes downward, wherein the shaft shoulder is made from mold steel; the stirring needle is made from a high strength alloy; during welding, an upper metal and a lower metal are stacked according to the technical demand; then, the stirring head is pressed down at a high speed; and when the stirring needle is about to penetrate through the uppermetal, the pressing speed is reduced and the stirring needle presses down at a low speed till welding is finished. Compared with the prior art, according to the compound stirring head provided by theinvention, the stirring needle and the shaft shoulder are matched, the shaft shoulder can be made from the steel which is relatively low in cost and relatively soft in texture, and only the stirring needle is made from the ultrahigh strength alloy which is relatively high in cost, so that the integral cost is lowered greatly, and the welding quality is not decreased; and in addition, in the firstwelding stage, a relatively high pressing speed is adopted for pressing, so that the time efficiency of integral welding is improved greatly.

The invention discloses a woven belt-shaped tassel weave and a weaving method thereof. The woven belt-shaped tassel weave comprises a bottom woven belt-shaped tassel weave body connected to the bottomof a fabric; the bottom woven belt-shaped tassel weave body is composed of a plurality of bottom woven belt-shaped tassels woven leftwards or rightwards in sequence on the bottom edge of the fabric;and the bottom woven belt-shaped tassels are formed in a mode that sectional needling is conducted on the bottom edge of the fabric according to the length requirement of the tassels, edge coils are sequentially hung on the corresponding needle positions of the bottom edge of the fabric through needle moving during weaving, a certain number of rows are woven according to the width requirement of awoven belt, and then flat narrowing is conducted. The weaving method of the woven belt-shaped tassel weave breaks through the limitation of a traditional product process method, a special woven belt-shaped tassel weave can be formed through weaving, abrasion is not easy to cause in the aspects of follow-up washing, finishing, tidying and wearing, and the service life of clothes is greatly prolonged.

The invention belongs to the technical field of machinery, relates to a buckle assembly type mahjong machine control disk, and resolves technical problems of existing unreasonable designs and the like. The buckle assembly type mahjong machine control disk comprises a disk body, an accommodation chamber for placing a dice is arranged at the center of the disk body, a seal cover made of transparent materials is fixed at a position of an opening of the accommodation chamber, a plurality of button holes located on the periphery of the accommodation chamber are arranged on the disk body, a button is mounted in each button hole, the seal cover is fixed at a position of the opening of the accommodation chamber through a pressing ring with a pressing edge arranged at the upper end of the pressing ring, and a buckle type limiting structure capable of blocking the pressing ring to continue rotating when the pressing ring clockwise or anticlockwise rotates is arranged between the pressing ring and the opening of the accommodation chamber. The buckle assembly type mahjong machine control disk has the advantages of being reasonable in design, simple in structure, easy to assemble, and high in structure strength; a membrane isn't separated from a panel even if the disk is used for a long time or the temperature changes in a wide range, and the service life is long; and the buttons are ergonomically designed, good in pressure touch, not easy to abrade, and easy to process and manufacture.

The invention relates to a hard cable meter counting device which comprises a roller line pressing block, a fixing frame, a web wheel mechanism, an adjusting mechanism and a meter counter. The roller line pressing block is fixedly arranged at the upper end of the side wall of the fixing frame, wherein the height of the roller line pressing block can be adjusted. The web wheel mechanism comprises a first synchronizing wheel and a second synchronizing wheel. The first synchronizing wheel and the second synchronizing wheel are arranged in the fixing frame in a synchronous belt linkage mode. An insulation board located between the first synchronizing wheel and the second synchronizing wheel is fixedly arranged on the inner side wall of the fixing frame. One end of the adjusting mechanism is connected with the first synchronizing wheel and the adjusting mechanism can drive the first synchronizing wheel to move forwards and backwards in the rolling state. The other end of the adjusting mechanism is elastically connected with the insulation board. The meter counter is fixedly arranged on the outer side wall of the fixing frame and penetrates through the side wall so as to be connected with the second synchronizing wheel. Compared with the prior art, the hard cable meter counting device is suitable for metering hard cables, exquisite in structure and convenient and quick to use, slipping is not likely to happen, cable abrasion is avoided, and stress is buffered.

The invention discloses a steel rail anti-fall device used for an electromagnetic crane, and relates to equipment used in the processes such as conveying, loading, transporting and the like of a steel rail. The device comprises a fixed frame connected with the electromagnetic crane and a suspender used for locking the steel rail, wherein the fixed frame is also provided with a lifting mechanism which is used for driving the suspender to move longitudinally; the lifting mechanism is provided with a transversely moving mechanism which is used for driving the suspender to move transversely; and the lifting mechanism is also provided with a steering mechanism used for driving the suspender to rotate. Further, the transversely moving mechanism is provided with a grating ranging positioner used for positioning the relative position between the suspender and the steel rail. In the device, the arrangement of the grating ranging positioner in the transversely moving mechanism makes the suspender in the device perform fine adjustment accurately; combining lifting and rotating actions of the suspender, the suspended steel rail can be locked effectively so as to prevent the steel rail from falling; and the lower end of the suspender has an inverted T shape and is in clearance fit with an adjacent steel rail. Therefore, the suspender is not only convenient to exert, but also not easy to cause the abrasion of the suspender and the steel rail.

The invention provides a hand-operated reversing valve and a sealing structure thereof. The hand-operated reversing valve has a sealing structure, a liquid return main sealing element is positioned in a first annular cavity, and the inner circumferential wall and the outer circumferential wall of the liquid return main sealing element are respectively butted against and in contact with the inner circumferential wall and the outer circumferential wall of the first annular cavity; and / or a liquid feed main sealing element is positioned in a second annular cavity, and the inner circumferential wall and the outer circumferential wall of the liquid feed main sealing element are respectively butted against and in contact with the inner circumferential wall and the outer circumferential wall of the second annular cavity. Through the adoption of the technical scheme provided by the invention, the main sealing structure adopts a radial dynamic sealing manner, so as to greatly reduce the wear of the main sealing element, improve the antifouling capacity of the main sealing element and prolong the service life of the main sealing element. The hand-operated reversing valve provided by the invention is provided with the sealing structure of the above hand-operated reversing valve.

The invention relates to a tapered inside thread. The root part between teeth is a centering sloping surface, the large diameter end on the upper part of the centering sloping surface is a centering surface in interference fit with the crest of an outside tapered thread, and the included angle beta between the centering sloping surface and a main conical surface is more than 0 and less than alpha which is the inclination angle of the main conical surface. The root part between the teeth of the tapered inside thread adopts a structure with two conical surfaces of the centering sloping surface to form a full thread helical interference surface of which the size can be adjusted by adjusting the stand-off so as to accord with an operating condition requirement, and the generation of the full thread helical interference surface makes loads be evenly distributed on the full length of the thread, a self-locking helical surface is formed and has superior anti-looseness performance; and the tapered inside thread has excellent capability to resist transverse vibration for dealing with frequent vibration and alternating load, is not easy to cause abrasion and fatigue fracture, is suitable for frequent disassemblies, and can interchange with the prior product by only changing the inside thread.

The invention discloses a coaxial central motor which comprises a machine shell, a middle shaft, a stator assembly, a rotor assembly, a speed change module and a clutch module. The stator assembly, the rotor assembly, the speed change module and the clutch module are located in the machine shell. The stator assembly is sleeved with the rotor assembly and connected to the machine shell, the middleshaft penetrates through the stator assembly, the rotor assembly, the speed change module and the clutch module, the speed change module is connected with the rotor assembly, the clutch module is connected with the middle shaft and the speed change module, and the middle shaft penetrates through the machine shell and stretches out of the machine shell. Through the above design, the axis of the stator assembly, the axis of the rotor assembly, the axis of the speed change module and the axis of the middle shaft coincide, the whole transmission process is simple, mechanical losses in the power output transmission process are small, and abrasion is not likely to be caused. The motor is low in noise during operation, and the service life of the motor is prolonged.

The invention discloses a damping device and an air conditioner. The damping device comprises an elastic main body, wherein at least two pipeline slots which are formed in a spaced mode are formed inthe elastic main body; a connecting part is formed between adjacent two pipeline slots; and the elastic main body is provided with magnetism. According to the damping device disclosed by the invention, the pipeline slots are formed in the elastic main body, the pipeline slots are utilized for fixing piping of the air conditioner, and the elastic main body is relatively soft, so that pipeline abrasion is not easily caused; meanwhile, the elastic main body is provided with magnetism, so that the elastic main body has an obvious damping effect; and when inherent frequency and modal shape of the piping are changed by the elastic main body, vibration energy can be effectively converted into heat dissipation, so that damping and noise-reducing effect of the air conditioner is improved.

The invention discloses a shaft seal of a nuclear grade centrifugal fan. The shaft seal comprises a transmission shaft and a fan volute. A flow guiding air returning cavity wrapped by a flow guiding air returning cavity casing is arranged on the right side of the fan volute, the fan volute and the flow guiding air returning cavity are in clearance fit with the transmission shaft, one end of an air returning pipe is further connected in the flow guiding air returning cavity, the other end of the air returning pipe is connected with a fan air inlet, sealing fillers are arranged at the right end of the flow guiding air returning cavity, the sealing fillers and the transmission shaft are matched closely, a sealing cover is arranged on the sealing fillers, and the sealing cover is further fixedly connected with the flow guiding air returning cavity casing. The shaft seal solves the problem in the prior art and has the advantages of being reasonable in structure, simple in maintaining, low in leakage quantity, safe and reliable and the like.

The invention discloses a line protection sleeve, which comprises a sleeve main body and a sleeve cavity; the line protection sleeve is characterized in that a front opening, a rear opening and a side opening are arranged in the sleeve cavity; the sleeve main body comprises an outer layer and an inner layer; the edge of the outer layer is connected with the edge of the inner layer through a plastic wire; the sleeve main body is bent and enclosed into the sleeve cavity; the sleeve main body comprises a first part for forming a side wall of the sleeve cavity and a second part for shielding the side opening of the sleeve cavity; the outer layer is formed by weaving plastic monofilaments; the inner layer is formed by weaving the plastic monofilaments and plastic multifilaments; and the hardness of the outer layer is greater than that of the inner layer.

The embodiment of the invention discloses intelligent glasses and a wireless charging base. The intelligent glasses comprise glasses legs and loudspeaker modules located on the glasses legs. The loudspeaker module comprises a loudspeaker shell and a loudspeaker single body accommodated in the loudspeaker shell; a wireless charging receiving coil with a multi-turn structure in the axial direction is accommodated in the loudspeaker shell; and when the loudspeaker shell is detachably combined and fixed with a wireless charging base containing a wireless charging transmitting coil for wireless charging, the wireless charging receiving coil and the wireless charging transmitting coil comprise mutually overlapped parts in the radial direction. According to the intelligent glasses, efficient wireless charging can be achieved, high convenience and high flexibility are achieved, meanwhile, abrasion is not likely to be caused by the charging mode of the intelligent glasses, potential safety hazards do not exist, and the charging safety of the intelligent glasses is effectively improved.

The invention discloses a pin-type transparent insulator which comprises a hold-down plate, a flat-topped umbrella skirt, a flat-topped umbrella skirt center cylinder, a connecting rod, a metal sleeve, and a bearing bolt, wherein the hold-down plate, the flat-topped umbrella skirt, the flat-topped umbrella skirt center cylinder, the connecting rod, the metal sleeve and the bearing bolt are connected in sequence. According to the transparent insulator, the large umbrella skirt and the flat-topped umbrella skirt center cylinder are made of polycarbonate, and the connecting rod is made of epoxy resin, so that the insulation effect is enhanced greatly, the transparency is good, and when there is a fracture or breakdown failure accident, timely repair can be conducted to ensure safe running of lines. The insulator has the advantages of reasonable structure, low weight, safe and reliable performance, easy manufacture, low cost, and easy installation and use, and has good economic and social benefits.

A method for cutting a semi-conductor photoelectric assembly comprises the following steps of: preparation of a semi-conductor photoelectric assembly chip, wherein, the semi-conductor photoelectric assembly chip comprises a substrate and an epitaxial silicon layer formed on the surface of the substrate; laser marking, wherein, the laser is used to mark a guide groove on the surface of the semi-conductor photoelectric assembly chip; the cutting of a diamond cutter, wherein, the diamond cutter is used to cut in the groove; formation of semi-conductor photoelectric assembly grains are obtained, wherein, the semi-conductor photoelectric assembly chip is split along the marked groove to form the semi-conductor photoelectric assembly grains. The semi-conductor photoelectric assembly of the invention is provided with one substrate and one epitaxial silicon layer, the epitaxial silicon layer is formed on one surface of the substrate, one side of the substrate is provided with a rough surface, the rough surface is formed by the cutting of the diamond cutter in the guide groove which is produced by laser marking on the surface of the semi-conductor photoelectric assembly chip.

The invention relates to the technical field of vibrating screen sieve plates, and in particular provides a grate sieve plate for a vibrating screen and a vibrating sieve, including two side plates and a plurality of grate sieve units installed between the two side plates, a grate The sieve unit includes a series assembly of grate bars and multiple grate bars. The series assembly of grate bars includes shafts, spacers, C-shaped grooves and bolts. One end of the grate bars is drilled. The two grate bars are connected in series on the shaft in the form of spacers, and then installed in the C-shaped groove as a whole. The opening width of the C-shaped groove is larger than the width of the grate bars. Bolts are arranged on the top, and the upper ends of the bolts are supported on the spacers. The two ends of the C-shaped slot and the shaft are fixed on the two side plates, and the opening of the C-shaped slot is inclined upward at a certain angle. The invention solves the problems of low screening precision, short service life and difficulty in cleaning materials in the existing vibrating screen.

The embodiment of the invention discloses a drawing set, which includes: a drawing template, a drawing crayon and a rubbing crayon; the drawing template is provided with a pattern texture, and the pattern texture is three-dimensional and protrudes on the surface of the drawing template. By adopting the present invention, the drawing crayons are used to draw patterns or fill in colors, combined with drawing templates and rubbing crayons to smear and rub, thereby simply and quickly completing paintings, and guiding users to give full play to their subjective initiative and creativity.

The invention discloses a shifting fork assembly for a coal mining machine. The shifting fork assembly comprises a rocker arm, a shifting fork shaft, a shaft seat, a shaft telescopic regulation connecting rod, a rocker arm fixed part and a wear-resistant antiskid rocker arm lantern ring, wherein the rocker arm is arranged on the shifting fork shaft through the wear-resistant antiskid rocker arm lantern ring and is fixed through the rocker arm fixed part, the shaft seat is arranged at an opening of one end of the shifting fork shaft, and the other end of the shifting fork shaft is connected with the shaft telescopic regulation connecting rod. Through the mode, the shifting fork assembly is firmly combined, and has small possibility of abrasion, the length of the shifting fork shaft is conveniently regulated, so that the use is very convenient.

The invention relates to a cutting system and a cutting method for a building film strip. The cutting system for the building film strip comprises a conveying bottom plate, a rotary preheating assembly and a plurality of cutting pieces, wherein a hollowed-out groove is formed in the conveying bottom plate, a conveying assembly is arranged in the hollowed-out groove and used for conveying the building film strip, mounting plates are arranged on the two opposite sides of the conveying bottom plate in a protruding mode correspondingly, the rotary preheating assembly comprises a rotary cage, a driving part and a plurality of preheating rollers, the two opposite ends of the rotary cage are rotationally installed at the top ends of the two mounting plates respectively, the driving part is installed on one of the mounting plates and connected with the rotary cage, and the plurality of preheating rollers are arranged on the circumferential face of the rotary cage. The cutting system of the film strip for the building is not prone to causing abrasion of a cutting mechanism.

The invention belongs to the technical field of composite material preparation, and in particular relates to a wood-plastic composite material using silane-modified boehmite as a flame retardant and a preparation method thereof. The wood-plastic composite material is composed of wood powder, polypropylene, VTES‑g‑PP Made of coupling agent, silane-modified boehmite, cetyltrimethylammonium bromide and antioxidant; the preparation method includes: compounding vinyltrimethoxysilane and dodecyltrimethoxysilane , Condensation reaction with the more active hydroxyl groups in boehmite, introducing silicon vinyl and silicon dodecyl groups into boehmite, so that it has good hydrophobic properties, and strengthens the relationship between boehmite and non-polar polypropylene Compatibility, but also play its synergistic flame retardant effect. The silane-modified boehmite flame retardant prepared by the invention has good thermal stability and high decomposition temperature, is suitable for the preparation of wood-plastic composite materials with high processing temperature requirements, is non-toxic and smokeless, and meets environmental protection requirements.

The invention discloses a post type transparent insulator for a high-voltage line. The post type transparent insulator comprises a pressing plate, a flat-top petticoat, a flat-top petticoat central cylinder, big petticoats, a small petticoat, a connecting rod, a metal sleeve, and a bearing bolt which are connected in sequence. According to the transparent insulator provided by the invention, the relatively large flat-top petticoat, the flat-top petticoat central cylinder, the big petticoats and the small petticoat are manufactured by polycarbonate; the connecting rod is made from epoxy resin, so that the insulating effect is greatly improved and the transparent performance is good; the fracture or breakdown failure accidents can be repaired in time, so that the safety operation of the line can be ensured; the set pressing plate is mounted in a clamping manner, so that less workload, relatively high efficiency and low labor intensity are achieved; due to wire slot transverse shallow slots and wire pressing slots or wire convex pressing strip shallow slots, an electric wire wearing phenomenon tends not to happen; the electric wire is fixed reliably, and the waste problem caused by replacement of an aluminum binding wire is prevented; and in addition, the insulator is reasonable in structure, light in weight, safe and reliable in performance, easy to manufacture, relatively low in fabrication cost, easy to mount, and capable of bringing relatively high economic benefit and social benefit.

The invention relates to the technical field of sieve plates of vibrating sieves, and particularly provides a plate grate sieve plate for a vibrating sieve and the vibrating sieve. The plate grate sieve plate comprises two side plates and a plurality of plate grate sieve units which are mounted between the two side plates, wherein each plate grate sieve unit comprises a plate grate strip series-connection assembly and a plurality of plate grate strips, the plate grate strip series-connection assembly comprises a shaft, a fixed-distance sheet, a C-shaped slot and a bolt, ends of the plate gratestrips are drilled, the plate grate strips and the fixed-distance sheet are in series connection on the shaft in a mode of separating the two plate grate strips by the fixed-distance sheet, and are integrally mounted in the C-shaped slot, the opening width of the C-shaped slot is greater than that of the plate grate strips, a bolt is arranged on the C-shaped slot below the fixed-distance sheet, the upper end of the bolt abuts against the fixed-distance sheet, the two ends of the C-shaped slot and the two ends of the shaft are fixedly arranged on the two side plates, and the opening surface ofthe C-shaped slot upwards tilts by certain angle. The plate grate sieve plate solves the problems that existing vibrating sieve is low in sieving precision, is short in service life and is difficultin material clearing.