31results about How to "Guaranteed friction performance" patented technology

The invention discloses a maintenance construction method of an asphalt road surface solid permeability wearing layer. The construction method includes the following steps that the spreading amount ofa solid permeability agent is surveyed; a road surface is cleaned; the road surface is pre-processed; the solid permeability agent is sprayed; a wearing layer is spread; manual trimming is carried out; preliminary maintenance is carried out. According to the maintenance construction method, the solid permeability agent is demulsified immediately after being atomized or smeared on the original road surface, heavy cycloparaffin distilled oil rapidly infiltrates to restore old asphalt performance, early diseases of the original asphalt road surface are repaired, and meanwhile a matrix asphalt and tackifier mixture is left on the road surface to form a binding layer. A solid permeability layer is formed by the repaired original asphalt road surface and the binding layer. The maintenance construction method is high in construction speed and efficiency.

The invention relates to a low-temperature-resistant and high-toughness packaging film material, which is divided into inner, middle and outer layers, wherein the inner layer is prepared from the following raw materials in parts by weight: 30 to 40 parts of metallocene polyethylene, 10 to 20 parts of linear low density polyethylene, 3 to 5 parts of a plastic lubricant and 2 to 3 parts of a slipping agent; the middle layer is prepared from the following raw materials in parts by weight: 30 to 40 parts of metallocene polyethylene, 60 to 70 parts of linear low density polyethylene and 3 to 5 parts of a propylene-based elastomer; the outer layer is prepared from the following raw materials in parts by weight: 30 to 40 parts of metallocene polyethylene, 10 to 15 parts of linear low density polyethylene, 3 to 5 parts of an anti-slip agent and 2 to 3 parts of an ink binder. The packaging film material has the advantages of low-temperature resistance and high toughness, and a package can be prevented from being broken at a 3m height at -20 DEG C; the performance is ensured, and meanwhile, the lowest using cost and a better packaging effect are achieved.

The invention relates to the field of manufacturing of heavy trunk brake pads, in particular to a heavy truck brake pad with a man-made skeleton as a framework and a manufacturing method of the heavy truck brake pad. The porous man-made skeleton framework is made of carbon fiber toughened ceramic, a porous framework material is filled with resin, friction performance modifier, filler and the like to make a high-performance special brake pad friction material, and thus the heavy truck brake pad can adapt to a special working environment and has the advantages of being low in density, high in strength, good in heat resistance, high in friction coefficient, stable and long in service life. The heavy truck brake pad can adapt to extreme working conditions with high temperature and high loads, is suitable for high-speed heavy trucks, lifting devices for mines and the like and has huge promotional application values.

The invention belongs to the field of structural design of stirring equipment, and in particular relates to a composite bearing deflection limiting device for a stirring shaft. The composite bearing deflection limiting device comprises a bearing block and a support frame, wherein the bearing block comprises an outer ring sleeve directly sleeving a shaft body of the stirring shaft, and a hole wall of the outer ring sleeve is spaced from the shaft body of the stirring shaft; a plurality of roll shaft parts are annularly arranged on the hole wall of the outer ring sleeve along the axial line of the hole wall, each roll shaft part comprises a stator shaft and a rotating sleeve, and the axial line of the outer ring sleeve, the axial line of a stator shaft and an ideal axial line of the stirring shaft are coaxially and vertically arranged; a section, matched with the rotating sleeve, of the stator shaft has a spindle-shaped structure, and the rotating sleeve correspondingly has a sleeve structure with a concave spherical inner cavity; on the axial cross section passing through the axial line of the stator shaft, the diameters of generatrixes of the stator shaft and the rotating sleeve at sections matched with each other are consistent and the circle centers are positioned on the same horizontal plane, and the diameter of the generatrix at a hole cavity of the rotating shaft is greater than that of the generatrix of the stator shaft. By adopting the composite bearing deflection limiting device provided by the invention, the effect of fixing the shaft body of the stirring shaft within an allowed deflection quantity range can be realized.

The invention discloses an automatic board continuous layer conveyor and belongs to the technical field of sheet board conveying machinery. The board continuous layer conveyor comprises a machine frame, a pair of revolving platform elevating mechanisms which are mutually corresponding, a revolving type layered board sending mechanism, a first revolving frame driving action cylinder and a second revolving frame driving action cylinder; the machine frame comprises a first wallboard, a second wallboard, a revolving platform elevating mechanism connecting shaft and a bottom beam; the revolving type layered board sending mechanism is supported between central shafts of a first revolving frame and a second revolving frame; the pair of revolving platform elevating mechanisms comprise revolving platform lifting action cylinder chains and chain wheels; the revolving type layered board sending mechanism comprises a first revolving frame, a second revolving frame, a sheet wood conveying platform panel, an input roller, an input pressing roller, an output roller and an output pressing roller; front ends of the first revolving frame and the second revolving frame are provided with sheet wood input pressing roller lifting and pressing mechanisms; a power transmission mechanism is arranged on the first revolving frame; a sheet wood deflection proof mechanism is arranged between a first bearing beam fixing base and a second bearing beam fixing base; sheet wood input and output pressing rollers are rubber rollers. The board continuous layer conveyor reduces the operation intensity, saves manpower, guarantees a friction effect between sheet wood and reduces movement resistance to the sheet wood.

The invention discloses a curved-hole flow channel ceramic base brake pad composite material and a preparation method thereof. The curved-hole flow channel ceramic base is manufactured by using Stereolithography Apparatus (SLA), and graphene and Sn-Ag-Cu composite filler is prepared and filled into the curved hole flow channel by vacuum pressure infiltration technology, and then the curved-hole flow channel ceramic base brake pad composite material is prepared by hot pressing molding process. Compared with the traditional brake pad material, the unique structural design and the optimized filler formula of the invention are combined with the advanced preparation process, so that the average friction coefficient of the brake material of the invention is greater than 0.402 in the operation process, the friction coefficient changes stably, and the material wear rate is lower than 1.15*10<-7>cm<3>.N<-1>.m<-1>. All performance parameters are superior to national standards and traditional brake pad products.

The invention discloses a fruit pre-treatment system for fruit wine in the field of fruit wine production. The fruit pre-treatment system comprises a bubble cleaning machine, wherein the bubble cleaning machine comprises a cleaning tank, a conveying mesh belt is arranged in the cleaning tank, a water spraying pipe and a bubble pipe are arranged below the conveying mesh belt, a plurality of turbulence paddles are rotatably connected to the inner side wall of the conveying mesh belt, and outlets of the water spraying pipe and the bubble pipe are obliquely arranged upwards. The problems that in the prior art, fruits for fruit wine production are not thoroughly pretreated and cleaned, and the fruit wine quality is affected can be solved.

The invention belongs to the technical field of railway wagons, and discloses a swing bolster assembly and a bogie. The swing bolster assembly comprises a swing bolster, a lower center plate, a sand prevention ring and a side bearing; the lower center plate is arranged on the swing bolster, and the side bearings are arranged on the swing bolster and located on the two sides of the lower center plate. The sand prevention ring is arranged on the swing bolster and annularly arranged outside the lower center plate in a sleeving mode, and the sand prevention ring is higher than the lower center plate. According to the swing bolster assembly and the bogie, sand and dust can be effectively prevented from entering the space between the upper center plate and the lower center plate, and the safety of a vehicle is guaranteed.

The invention discloses a fixed device used for an air conditioner. A fixed shell is included, and a rubber pad is arranged on the inner side of the fixed shell; rolling wheels are arranged at the bottom of the fixed shell; a fixed base is arranged at the bottom of each rolling wheel; a control panel is arranged on the front side of each fixed base; a cooling block is arranged on the back side ofthe fixed shell; the middle of the cooling block is provided with a water outflow pipe opening; the top end of the cooling block is provided with a refrigerating pipe opening; when temperature is toohigh, a bearing controller is used for controlling the opening and closing degree of the cooling block, the air conditioner is coordinated to perform cooling; a distance sensor and a pressure sensor of a trigger detect whether the air conditioner is fixed firmly or not, so that operation is easy and convenient; when fixation is not firm, a buzzer sends out an alarm, a worker can perform manual adjusting through the control panel, the purpose of enhancing the fixing effect is achieved, and the safety is guaranteed; and a fixed circuit passes through a circuit interface, and the potential safetyhazard is effectively lowered.