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49results about How to "Don't worry about falling off" patented technology

Bicycle shaft multi-stage transmission internal speed variator

PendingCN109606531ADon't worry about disconnectionDon't worry about falling offWheel based transmissionControl theoryVariator
The invention discloses a bicycle shaft multi-stage transmission internal speed variator. The speed variator comprises a spline shaft, a variable speed cylindrical gear, a first bevel gear, a second bevel gear and a third bevel gear, wherein one end of the spline shaft is in transmission connection with a bicycle power source; the spline shaft is coaxially sleeved with the variable speed cylindrical gear, and the variable speed cylindrical gear is capable of sliding axially along the spline shaft; a rear axle of a bicycle is coaxially sleeved with the first bevel gear, the second bevel gear and the third bevel gear which are sequentially arranged; the variable speed cylindrical gear is driven by an adjusting device to slide among and be meshed with the first bevel gear, the second bevel gear and the third bevel gear; the number of gears of the first bevel gear is greater than the number of gears of the second bevel gear, and the number of gears of the second bevel gear is greater thanthe number of gears of the third bevel gear. According to the speed variator provided by the invention, the variable speed is realized by sliding of the variable speed cylindrical gear among the low,medium and high speed bevel gears on the rear axle of the bicycle and the switched meshing between the variable speed cylindrical gear and the low, medium and high speed bevel gears, and the speed variator is compact in structure, few in parts, easy to maintain and long in maintenance period.
Owner:SHANGHAI SECOND POLYTECHNIC UNIVERSITY

Intelligent library book returning device

The invention discloses an intelligent book returning device for a library. The intelligent book returning device comprises a frame body, a book box, a lifting mechanism, a book conveying mechanism for pushing books to the position above the lifting mechanism and a book pushing mechanism for pushing the books to a bookshelf body. The frame body has a frame structure defined by a base, mounting plates arranged on the two sides and a fixing plate at one end. Intelligent walking wheels are connected to the four corners of the bottom of the base correspondingly. The book box is arranged in the frame body. The book conveying mechanism comprises a book pushing table perpendicular to the bottom of the book box, the book pushing table is slidably arranged in the book box in an axial direction, andthe end, opposite to the fixing plate, of the base is connected with a horizontally-arranged rectangular sliding fixing table. The lifting mechanism is arranged above the sliding fixing table, a lifting table is transversely arranged at the top of the lifting mechanism, and a book pushing structure is arranged above the lifting table. According to the invention, an intelligent technology is usedfor replacing original tedious manpower and an accurate data processing function is applied to book returning, so that a library can efficiently and accurately complete book taking and placing work; the technology is easy to operate and implement, and the cost performance is high.
Owner:LUOYANG INST OF SCI & TECH

Sealed heating device with integrated clamping flange and using method of sealed heating device

PendingCN111567877AHigh heating temperatureRaise the heating temperatureTobaccoPhysicsEngineering
The invention belongs to the technical field of heating devices, and particularly relates to a sealed heating device with an integrated clamping flange and a using method of the sealed heating device.The sealed heating assembly comprises a flexible sealing sleeve (3), wherein a sealed cavity is formed in the flexible sealing sleeve (3), and an integrated clamping flange (34) is arranged on the inner wall of the sealing sleeve (3); a central heating element (1) arranged in the sealed cavity. A double-side vibration cigarette outlet assembly comprises a vibration block (4) arranged on the periphery of the sealed heating cavity; a power supply device providing power for the vibration block (4) to inwards extrude the side wall of the flexible sealing sleeve (3). According to the sealed heating device, the mode that the flexible sealing cavity is extruded in the circumferential direction is adopted for the first time, oscillating cigarette discharging is achieved, meanwhile, the integratedclamping flange (34) is arranged at the upper end of the flexible sealing cavity, and a cigarette can be clamped and sealed in the circumferential direction. Therefore, the problems are solved, and sealed heating of a cigarette and smooth circulation of smoke are achieved at the same time.
Owner:CHINA TOBACCO YUNNAN IND +1

Medical operating forceps

The invention discloses a pair of medical operating forceps. The medical operating forceps comprise a forcep body; a forcep mouth is formed in the forcep body; a forcep groove is formed in the forcep mouth; the forcep groove is distributed in the top and the bottom of a front section of the forcep body; the forcep groove is connected with a forcep core; the thickness of the forcep core is slightly less than the thickness of the forcep body; the forcep core is hidden in the forcep body; a connecting block is arranged on the forcep body; the connecting block is in a convex shape; a handle is arranged on the connecting block; a fixed clamp is arranged on the handle; the fixed clamp is distributed at the front end of the handle; a sliding handle is arranged on the handle; the sliding handle wraps the handle; when the medical operating forceps are in practical use, the forcep core of the operating forceps is very sharp generally; the forcep core is arranged in the forcep body, so that when the medical operating forceps are used, the forcep core can extend for operating by extruding the handle; the exposed forcep is also wrapped by the front section of the forcep body; the sliding handle is arranged on the handle and can slide, so that the handle can be lengthened; the length of the handle can be met; a limiting piece is arranged on the forcep groove; the maximal extending length of the forcep core can be controlled by the limiting piece, so that the overall operating forceps are controlled freely, and the safety is increased.
Owner:张华信

Structure ceramic metal abrasion reduction material

The invention relates to a structure ceramic metal abrasion reduction material which comprises lubricating oil or lubricating grease used as a carrier; natural ore powder with the fineness specification of 100 to 500 nanometers is uniformly added into the lubricating oil or the lubricating grease; the content of the ore powder in the lubricating oil or the lubricating grease is 0.1% to 1%; the core powder comprises elementary components: 5% to 20% of silicon, 5% to 20% of aluminium, 5% to 10% of calcium, 5% to 20% of magnesium, 5% to 10% of carbon, 1% to 10% of iron, 1 to 10% of sodium and 0.01% to 1% of scandium; the structure ceramic metal abrasion is prepared by the steps of: selecting the ore powder, adding the ore powder into the lubricating oil or the lubricating grease according toa certain proportion and carrying out emulsification and diffusion treatment; a right amount of reduction material is added into machine oil of an engine; in the running process of mechanical equipment, the reduction material is combined with engine body elements on the frictional negative surface by virtue of the heat energy generated by the high temperature gas and the friction of the engine toform a smooth and hard structure ceramic protective layer, thereby achieving the purpose that frictional factors of the machine elements are decreased, the abrasion is reduced, the service life of the machine elements is prolonged and the oil is saved.
Owner:中科宝鹿新材料(辽宁)有限公司

Foundation pit steel pipe connecting device

The invention discloses a foundation pit steel pipe connecting device. The foundation pit steel pipe connecting device comprises a thick iron sheet and a limiting structure. The limiting structure isinstalled on the thick iron sheet, the limiting structure and the thick iron sheet are integrally formed, the whole limiting structure is cylindrical, and the thick iron sheet and the limiting structure are combined to form a component unit. The limiting structure comprises a limiting cylinder, a limiting column, limiting blocks and bolts. The limiting cylinder wraps the limiting column and comprises two arc-shaped plates. Expansion joints are reserved in the joint of the two arc-shaped plates and used for increasing and reducing the diameter of the limiting cylinder. Every two adjacent limiting blocks are oppositely arranged on the corresponding side face of the limiting cylinder, the bolts are arranged in the limiting blocks, and the limiting blocks are used for connecting the two disconnected arc-shaped plates. The stability of a supporting system is improved, components and parts are prevented from falling off, whether the ends of internal steel pipes are inclined or not can be observed through an examination cavity, the potential safety hazard are timely eliminated, and the overall stability of a steel pipe support is enhanced by the limiting cylinder and the limiting column.
Owner:浙江明思特建筑支护技术有限公司
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