146results about How to "Increase resistance to movement" patented technology

The present invention discloses an improved rotary forced-air cooler, which comprises a double layer trolley, a supporting beam structure, a material blocking proof air duct sealing plate arranged at the connecting part of the double layer trolley and an air supplying system, a double layer trolley unit static seal device and an air duct device. The supplying system structure is based on a rectangular beam, a triangle beam is arranged on the rectangular beam, and a plurality of ventilation channels are arranged on the bevel edge steel plates at the both waists; an air duct pipe is arranged on the air vent of the material blocking proof air duct sealing plate, an inclined plate inclining upwards from the air vent at the bottom part of the air duct pipe has a transition to a horizontal plate, a stopping ventilation fence is added to the air duct pipe at the side of the trolley; two rubber sealing parts with extended bottom edges are arranged at the outer sides of the lower parts of inner and outer sealing plates of the double layer trolley unit static seal device, an ash baffle plate which can move up and down is hung at the inner side; an air water sealing wave subduing device adopting a damping plate is arranged on the air duct device. The present invention further improves the sealing performance of the equipment, and reduces energy consumption and pollution.

The invention discloses a method for measuring the maximum scour depth of a viscous debris flow gully bed and the application thereof. The method comprises the following steps: weight Gamma1, depth h and a dynamic friction angle Beta of a viscous debris flow body, weight Gamma2, an internal frictional angle Phi and a viscosity coefficient C of cumulus deposits of an original gully bed, and vertical gradient J of the gully channel are determined by means of survey, measurement and sampling of the debris flow gully, testing of debris flow characteristic parameters and the like; and the obtained parameters are substituted into a calculation formula to obtain the maximum scour depth of the viscous debris flow gully bed. The method is applicable to the design of foundation embedded depth in a viscous debris flow prevention project, and the obtained maximum scour depth of the viscous debris flow gully bed serves as the minimum foundation embedded depth in the prevention project. Compared with the prior art, as the method is based on rigorous theory derivation, the maximum scour depth of the viscous debris flow gully bed can be reasonably determined, and references on the design of the foundation embedded depth in the prevention project are provided; and the method is high in result accuracy and can meet the requirements of the practical project.

The invention relates to a multifunctional floor brush comprising a floor brush surface cover, a floor brush base plate, an air inlet arranged on the floor brush base plate and for dust-containing air flow entrance, and a floor brush connection pipe connecting a dust collector. A brush bar scraping dust on the floor and a first elevating structure driving the brush bar to move up and down are arranged close to the air inlet, and a second elevating structure lifting the floor brush base plate to change a distance between the floor brush base plate and the to-be-cleaned floor. The multifunctional floor brush can meet a demand of high dust collecting capacity of ERP and use comfortableness and flexibility under different conditions; mobile resistance of the floor brush can be reduced; large particles can be easily absorbed, so damage to the floor by large particles can be reduced; and the multifunctional floor brush has great practical meaning.

The invention discloses a low-noise mechanism and a lock with the same. The low-noise mechanism comprises a rack (1). One end, in the length direction, of the rack (1) is mounted on a spring bolt component (10); the rack (1) is meshed with a transmission gear (6); an energy-storage flywheel (7) is fixedly arranged on and is coaxial with the transmission gear (6). The lock with the low-noise mechanism comprises a lock shell, the spring bolt component (10), a driving component and the low-noise mechanism. The lock shell is provided with a faceplate. A spring bolt hole is formed in the faceplate. The spring bolt component (10) comprises a spring bolt and a guide plate fixedly connected with the spring bolt. The driving component is used for driving the spring bolt component (10) to extend or retract. By the low-noise mechanism, the technical problem that noises are generated due to the fact that abnormal sounds are caused during collision between the spring bolt and a pin hole of a door fame when the spring bolt extends in the prior art is solved.

The invention proposes a hydraulic oil cylinder, a hydraulic system and engineering machinery. The hydraulic oil cylinder comprises a cylinder barrel, a piston and a piston; the piston divides the cylinder barrel into a rod cavity and a rodless cavity; the rod cavity is communicated with an oil port of the rod cavity; the rodless cavity is communicated with an oil port of the rodless cavity; meanwhile, the piston or the piston rod is axially and movably provided with a first movable buffer sleeve; a first overflow valve is connected between the rodless cavity and the oil port of the rodless cavity, and is used for opening after the pressure of the rodless cavity reaches preset pressure; and/or, the piston or the piston rod is axially and movably provided with a second movable buffer sleeve; and a second overflow valve is connected between the rod cavity and the oil port of the rod cavity, and is used for opening after the pressure of the rod cavity reaches preset pressure. The hydraulic oil cylinder is stable in buffer pressure at the final travel thereof, can adjust the buffer pressure through adjusting the opening pressure of the first overflow valve and/or the second overflow valve, and is convenient to adjust and excellent in buffer effect.

The invention provides a vertical lift with a multi-stage electromagnetic auxiliary braking energy saving safety device. According to the vertical lift, a control device is arranged at top of a lift car. A traction machine and pulley assembly is arranged above the lift car. A speed governor is arranged on one side of the traction machine and pulley assembly. A rope above the lift car is connected with a counterweight through the traction machine and pulley assembly and the speed governor. A traction machine of the traction machine and pulley assembly is connected with a rotary shaft of an electric generator. The electric generator is connected with an energy storage battery through a connecting line. A left electromagnet and a right electromagnet are mounted on the left side and the right side of the lift car correspondingly. Iron plates are fixedly mounted on the inner walls of a hoistway. The iron plates on the left side correspond to the left electromagnet. The iron plates on the right side correspond to the right electromagnet. Braking force of the vertical lift can be increased, and the problem of lift slippage due to insufficient lift mechanism braking force is solved advantageously; and meanwhile, motion resistance is increased, the operating speed of overspeed or stall lifts can be decreased advantageously, the safety and reliability of the lift are improved, and personal injuries to passengers are reduced.

The invention relates to a mechanical part for a vehicle video disc playing and video displaying device, where the CD suction inlet of a suction CD loading device in a machine seat is arranged to the front; a CD entrance at the middle-upper part of a cover frame fixed in front of the machine seat corresponds to the CD suction inlet; a display screen component is in front of the cover frame and the upper end of the display screen component can slide, relative to the cover frame. A moving part arranged in the machine seat can move front and back, relative to the machine seat and the connection seat of the moving part runs through the cover frame and is rotationally connected with the lower part of the display screen component though the front end; thus, as the moving part is at the back end relative to the machine seat, the display screen component is in a vertical state so as to cover the CD entrance on the cover frame; as the moving part is at the front end relative to the machine seat, the front end of the connection seat and the lower end of the display screen component extend forward out of the cover frame, so that the display screen component is in an inclined state to expose the CD entrance on the cover frame, thus able to adopt a larger-area display screen.

The invention belongs to the field of tertiary oil recovery, and particularly relates to an amphiphilic polymer oil-displacing agent with a biquaternary ammonium salt long chain structure and a preparation method of the amphiphilic polymer oil-displacing agent. For the technical problem that the salt resistance of an oil-displacing agent adopted in the prior art is frequently poor, the oil-displacing agent with good salt resistance, viscosifying action and shear resistance is provided. Firstly, N,N-dimethylhexadecylamine and cis-1,4-dichloro-2-butene are taken as raw materials to synthesize adouble-branched cationic hydrophobic monomer N,N'-bis(hexadecyl dimethyl)-1,2-chloride-2-butene-ammonium salt (CC16-DMBAC), then the CC16-DMBAC and acrylic amide (AM) perform copolymerization, a cationic group and a hydrophobic long chain are introduced onto an acrylic amide main chain, so that polymer molecules form a three-dimensional network structure with a certain strength by virtue of a hydrophobic interaction function among the molecules, and the oil-displacing agent has viscosifying action and good shear resistance and salt resistance.

The invention relates to OMMT modified anticondensation ice emulsified asphalt and a preparation method thereof, and relates to the technical field of preparation of road maintenance materials. The method comprises the following steps: performing organification treatment on Na-MMT to obtain organic montmorillonite, preparing a mixed soap liquid by using OMMT and an emulsifying agent as raw materials, and adding the mixed soap liquid into matrix asphalt to prepare the modified emulsified asphalt having excellent anticondensation ice performance. The method provided by the invention has the beneficial effects that the mixed soap liquid prepared from the organic montmorillonite and the emulsifying agent is used as a modifying agent of the asphalt, the contact angle of the obtained emulsifiedasphalt is greatly improved relative to the matrix asphalt and ordinary emulsified asphalt, so that bonding strength between frozen water and a road layer is reduced, and the anticondensation ice performance of the emulsified asphalt is improved; the storage stability of the emulsified asphalt is improved, and the anti-aging property is improved; fog seal layer treatment is performed on a road surface by the emulsified asphalt, and the method has the advantages of high efficiency, no consumption, simple construction, relatively-low costs and no pollution.

The invention discloses an active warp-easing regulating device, comprising an eccentric regulating device arranged on a loom body and a warp-easing rocker used for installing a tension roller. A warp-easing regulating rod device is connected between one end of the warp-easing rocker and the eccentric regulating device, the other end of the warp-easing rocker is articulated with a rocker bracket which is fixedly connected with the loom body, and a tension sensor is arranged between the rocker bracket and the loom body. The invention has simple structure and can accurately detect tension with better adaptability and reliability during the high-speed running of the loom.

With a display device in which a main display component is supported in a tilted orientation by a stand unit, the leg of the stand unit will not be pushed in, causing the main display component to readily fall over backwards, even if the main display component in a tilted orientation should be accidentally pushed by hand. A stand unit A has a slider 2 affixed to the upper end of a leg 3, a case 1 that houses the slider 2, and a slider position restriction means 5 for restricting the slider 2 to two positions: an upper position and a lower position. The slider position restriction means 5 is equipped with a cam component 6 and a spring 7. The spring 7 has an engagement component 71, and the cam component 6 is equipped with a upper latching component 61, a lower latching component 62, and a wavy serrated face 65 that links these. The function of increasing the moving resistance when the engagement component 71 moves is imparted to the serrated face 65.

The invention discloses a preparation method of amphoteric cellulose ether for drilling fluid, and belongs to the technical field of cellulose ether preparation. The preparation method comprises the steps: firstly, under an alkaline condition, cationic hydroxyethyl cellulose ether is obtained by etherification reaction of active hydroxyl on a molecular chain of hydroxyethyl cellulose and epoxy chloropropane, and then a viscous filtrate, namely 3-chloro-2-hydroxypropyl dimethylammonium acetate, is prepared, so that the motion resistance of water molecules is increased, and the cellulose ether has an excellent water loss reduction function in the drilling fluid; the number of anion groups in the amphoteric cellulose ether and the number of cation groups in the amphoteric cellulose ether areroughly equal, the electrostatic interaction force in the molecular chain is only electrostatic attraction force, resulting in contraction of polymer molecules, decrease of the hydrodynamic volume anddecrease of the viscosity of a solution, so an obvious antipolyelectrolyte solution behavior is showed, a large consistence can be still kept when the water content in the drilling fluid is high, andthe permeability of a salt solution is weakened, so the salt tolerance of the amphoteric cellulose ether in the drilling fluid is improved, and the prospect of application is broad.

The invention discloses a special high-performance polyvinyl chloride composite material for a cable. The composite material comprises the following raw materials: polyvinyl chloride, nitrile rubber, acrylonitrile-butadiene-styrene copolymer, trimethylol-propane trimethacrylate, 2,5-diphenyl-1,3,4-oxadiazole, kaolin, magnesium hydroxide, nanometer calcium carbonate, organic montmorillonite, graphite nanosheets, cerium carbonate, tribasic lead sulfate, bisphenol A diglycidyl ether, maleic acid monoester of lanthanum, cerium citrate, glycerol, glyzinc, dibutyltin dilaurate, xylitol, a lubricant, a plasticizer and a flame retardant, wherein the flame retardant is composed of ammonium heptamolybdate, hydrotalcite, zinc borate, bisphenol A bis(diphenylphosphate), silicone powder and alpha-zirconium phosphate. The special high-performance polyvinyl chloride composite material for the cable in the invention has the advantages of excellent heat resistance, good flame retardant performance, high strength, shock resistance and long service life.

The invention relates to sports equipment. The sports equipment comprises a running platform, a flywheel, a friction type resistance device, an eddy current type resistance device and a front end frame body. The running platform includes a front roller, a rear roller and an annular running belt with which the two rollers are sleeved in an annular mode, a user can walk, jog or run on the running belt, and the motion causes the running belt to revolve around in cycles; the flywheel is fixedly connected with the front roller; the friction type resistance device is arranged near the flywheel and can be manually controlled by the user so as to change the revolving resistance of the flywheel and the front roller; the eddy current type resistance device is arranged near the flywheel and can be manually controlled by the user so as to change the revolving resistance of the flywheel and the front roller; the front end frame body is fixed on the front end of the running platform and is provided with at least one part to be held by the user. The sports equipment has two kinds of use modes, the first movement can be conducted in the first use mode, the second movement can be conducted in the second use mode, and in the two types of movement, the user can easily adjust the motion resistance to the required size.

The invention relates to a low-residue salt-tolerant fracturing fluid preparation method, and belongs to the technical field of fracturing fluid preparation. The preparation method comprises: mixing dimethylallylamine, chloroacetic acid and a sodium hydroxide solution to obtain a light yellow viscous liquid, introducing chlorine gas into the light yellow viscous liquid, carrying out heating distillation, adding anhydrous ethanol, cationic hydroxyethyl cellulose, river sand and an encapsulation gel breaker, and carrying out a stirring reaction to obtain the low-residue salt-resistant fracturingfluid. According to the present invention, the amphoteric cellulose ether in the fracturing fluid can effectively weaken and prevent the free water molecules in the aqueous fracturing fluid from hydration on the surface of the fracturing fluid particles and the pigment so as to improve the hydration dispersibility of the guar gum, completely break the gel and reduce the residue; the used guar gumcan improve the static viscosity of the aqueous fracturing fluid by rapidly hydrating with the water molecules through hydrogen bonding; and a large number of the cationic groups have good repellencyto the metal cation, such that the fracturing fluid has good salt-tolerant stability and has broad application prospects.

The invention discloses a polyvinyl chloride cable material resistant to heat and shock. The polyvinyl chloride cable material resistant to heat and shock is prepared from polyvinyl chloride, polyurethane, bisphenol-A polycarbonate, poly (tetramethylene succinate), di (2-ethylbutanoic acid) triuret gylcol ester, 2-ethylhexyl epoxystearate, montmorillonite, ammonium heptamolybdate, kaolin, aluminum hydroxide, magnesium hydroxide whisker, antioxidant, 1-azyl-4-methyl piperazine, tri methylol propane tri methacrylate, bisferrocene-base acetylene and a heat stabilizer. The heat stabilizer is prepared through mixing of rhenium complex, cerous carbonate, tribasic lead sulfate, bisphenol A diglycidyl ether, epoxy butyl stearate, lanthanum stearate, glyzinc, aceticacid,2,2',2''-[(octylstannylidyne)tris(thio)]tris-,triisooctylester, mannitol and 2,5-diphenyl-1,3,4-oxadiazole. The polyvinyl chloride cable material has high strength, heat resistance and shock resistance, is resistant to bending and torsion, and has a long service life.