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 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 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 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 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.

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 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.