36results about How to "Avoid abrasion damage" patented technology

The invention discloses a pearl medium-temperature polishing technology. The pearl medium-temperature polishing technology comprises the following steps that: 1. a polishing material is put into polishing equipment; 2. a rotational speed of the polishing equipment is set between 150 and 180 rmp; the polishing equipment preoperates till a working temperature of the equipment reaches between 50 and 60 DEG C; (3) pearls are put into the polishing equipment; the rotational speed of the polishing equipment is increased to between 200 and 220 rmp and the pearls are polished; the working temperature of the equipment is increased to between 90 and 100 DEG C; (4) the rotational speed of the polishing equipment is declined to between 120 and 150 rmp in order that the working temperature of the equipment is dropped to between 50 and 100 DEG C; and (5) the polishing equipment is closed and the pearls are cooled, thereby completing the polishing of the pearls. Through the polishing equipment, the pearl medium-temperature polishing technology provides different speeds and generates different working temperatures to control the wear degree of a surface layer of the pearls and the working conditions of the polishing material, thereby achieving excellent pearl polishing effect and avoiding the great wear damage to the surface layer of the pearls caused by overhigh working temperature.

The present invention provides a sealing chain, capable of preventing lubricant between a connecting pin and a sleeve from leaking as well as preventing dust from enterring, avoiding the sleeve and an outer link plate to sliding contact with each other directly, so to play excellent sealing performance for a long time and have long sealing lifetime without implementing surface thin processing to the outer link plate. The sealing mechanism (160) of the sealing chain (100) setting between the outer link plate (150) and an inner link plate (110) includes: a ring sealing piece supporting component (161), a first elastic sealing piece (162), a second elastic sealing ring (163) and a steeliness sealing ring (164).

Multiple teeth part 11 of straight type iron core 1 through edgefold 12 of V shape notch 13 is connected. Hole part 14 is setup in front of notch 13. Concavo-convex shaped bulge is setup on faces in opposite direction in V shape notch 13. Strain avoiding notches 16, 16' are formed under hole part 14. Advantages are: raising life time of cutting die, reducing strain of bending work, maintaining magnetic characteristic and raising manufacturing accuracy.

The invention discloses a high-efficiency English listening training device, comprising a suction cup, a telescopic rod, a bracket, a timer, a receiving antenna, a player, a soft pad, a microphone, a wiring port, a sound calibrator, a battery, a control element and a protective layer. The top of the bracket is provided with a telescopic rod, the telescopic rod is provided with a suction cup, the side wall of the bracket is provided with a receiving antenna, the two ends of the arc of the bracket are provided with players, the inner side of the player is provided with a cushion, and the bottom side of one player is provided with The volume adjustment key and the FM key, the other player is provided with a wiring port on the outside, the bottom side of the player is connected to the microphone through a plastic hose, the side wall of the bracket is provided with an acoustic calibrator, the bracket is equipped with a battery and a control element, and the inner side of the bracket arc With protective layer. The invention is suitable for students to wear, makes it more comfortable, avoids ear abrasion damage, imitates through a microphone, calibrates errors through an acoustic calibrator, ensures simultaneous training of speaking and listening, has a simple structure, is convenient to use, and is conducive to popularization.

The invention discloses a part turnover mechanism for an automatic lathe production line. The part turnover mechanism comprises a base, an upright post, a mounting plate, a motor, a speed reducer, a rocker arm and a clamping jaw mechanism, wherein the lower surface of the upright post is fixed to the upper surface of the base; the mounting plate is mounted on the upper surface of the upright post;and the speed reducer is connected with the rocker arm through a connecting rod. The clamping jaw mechanism further comprises an air cylinder, gripper joints, a connecting base, a hinge base, grippers and a telescopic rod, wherein one end of the telescopic rod penetrates through the connecting base and a bearing base and is connected with a piston rod of the air cylinder while the other end of the telescopic rod is connected with the hinge bases; one ends of the grippers are respectively embedded into the gripper joints and are fixedly connected with the two ends of the hinge base; a left proximity switch and a right proximity switch are respectively arranged on the upper surface of the mounting plate and positioned on the two sides of a connecting rod; and speed reduction sensors are also respectively arranged on the upper surface of the mounting plate and positioned on the two sides of the connecting rod, and are used for controlling rotation speed of the rocker arm. According to the part turnover mechanism disclosed by the invention, manual work is replaced by machines, and machined workpieces are mechanically turned over, so that a large amount of labor force is reduced, and situations such as injuries of personnel are avoided.

The invention discloses a rotation support device for fruit tree plantation. The device includes fixation devices, supporting devices and a supporting snap ring; one ends of the supporting devices areslidingly arranged on the supporting snap ring; the fixation devices are in hinged joint with the end parts of the supporting devices; the supporting snap ring consists of a first snap ring and a second snap ring; the upper surfaces of the first and second snap rings are provided with first annular grooves which have the same size and at the same position; the side walls of the first and second snap rings are provided with second annular grooves which have the same size and at the same position; the bottom of the supporting snap ring is fixedly provided with three supporting columns; the supporting devices consist of first articulated seats, second articulated seats, rotating telescoping rods and supporting rods; the bottoms of the first articulated seats is fixedly provided with first guide rails; the bottoms of the second articulated seats is fixedly provided with second guide rails; and the first guide rails are fastened in the first annular grooves, and the second guide rails arefastened in the second annular grooves. The device is reasonable in structure and complete in function, and therefore, the fixing and supporting functions on fruit tree trunks can be realized, and supporting functions on fruit tree branches can be achieved as well.

The invention relates to a non-pressure coin turn-over device, and belongs to the technical field of coin making equipment. The non-pressure coin turn-over device comprises a first-level conveying belt and a second-level conveying belt which are arranged in an up-down mode and have different motion directions. The output end of the first-level conveying belt is connected with the input end of the second-level conveying belt through a C-shaped turn-over coin guide plate. A gap is formed between the upper end of the C-shaped turn-over coin guide plate and the peak of the first-level conveying belt, and the width of the gap is larger than the thickness of a coin. The lower end of the C-shaped turn-over coin guide plate extends for connection along the conveying direction of the second-level conveying belt. By the non-pressure coin turn-over device, turn-over conveying of coins can be completed without any pressure, stability and reliability are guaranteed, and abrasion and damage to surfaces of the coins are completely avoided.

The invention discloses a pair of multifunctional scissors for cosmetology and hairdressing. The multifunctional scissors comprise a first handle, a first cutter body, a second handle and a second cutter body; handle through holes are formed in the surfaces of the first handle and the second handle respectively, and fixed shells are installed on the inner side surfaces of the first handle and thesecond handle respectively; the first cutter body is installed at the top end of the first handle, and the second cutter body is installed at the top end of the second handle; the first cutter body and the second cutter body are connected through a pivot, and the surface of one side of the first cutter body and the surface of one side of the second cutter body are provided with shearing edges respectively; and a scraping edge is installed on the surface of the other side of the second cutter body, a fixing groove is formed in the surface of the other side of the first cutter body, and a comb strip is installed inside the fixing groove. According to the multifunctional scissors, a series of structures are arranged, so that the force of a user is saved in the using process of the device, theuse efficiency and the comfort degree can be improved conveniently, the comb shearing operation can be conveniently carried out, and eyebrows or eyelashes of customers can be trimmed.

The invention discloses a water-resistant salt-resistant anticorrosive paint which comprises a bottom paint and a surface paint. The surface paint is composed of a component A and a component B. The component A comprises hydroxy acrylic acid, fibrous talcum powder, nano silicon carbide and other components; the component B comprises polyamide resin, polyketone and other components. The bottom paint is composed of a component C and a component D; the component C comprises bisphenol A epoxy resin, white carbon black, alkyd resin functional groups and the like; and the component D comprises polyether amine, graphene, nano silicon carbide, styrene and the like. The paint prepared by the invention is suitable for internal corrosion protection of various finished oil tanks, oil pipelines, sewagetanks and sewage pipelines and corrosion protection of various indoor steel structures; the preparation process is simple, the anti-corrosion period reaches more than ten years; and the paint not only can be used for coastal and marine environments, but also can be used for chemical engineering and atmospheric corrosion environments.

The embodiment of the invention discloses a pair of convenient trousers for a long-term bedridden patient. The pair of convenient trousers comprises a front waist portion (1), two rear waist binding belts (2) and two trouser legs (3), wherein the two rear waist binding belts (2) are connected to the left side and the right side of the front waist portion (1) respectively and extend backwards, thetwo trouser legs (3) are connected below the front waist portion (1) and the rear waist binding belts (2) and extend downwards, a hip window (4) for exposing the hip of the patient is formed between the two rear waist binding belts (2), and a drainage window (5) for a penis or a drainage catheter to pass through is formed in the middle-lower part of the front waist portion (1). By using the convenient trousers for the long-term bedridden patient, the patient can be conveniently cared for defecation and urination, the convenient trousers do not need to be greatly moved by the patient when beingreplaced, the stability and the comfort are remarkably improved, and abrasion injuries and the like of the patient can be avoided.

The invention discloses supporting auxiliary equipment for red heart pomelo planting. The supporting auxiliary equipment comprises fixing apparatuses, supporting apparatuses and a supporting clampingring, wherein one ends of the supporting apparatuses are arranged on the supporting clamping ring in a slide manner, the fixing apparatuses are in hinged connection with the ends of the supporting apparatuses, the clamping ring is composed of a first clamping ring and a second clamping ring, the upper surfaces of the first clamping ring and the second clamping ring are provided with first annulargrooves of the same size and position, the side walls of the first clamping ring and the second clamping ring are provided with second annular grooves of the same size and position, the bottom of thesupporting clamping ring is fixedly provided with three supporting columns, each supporting apparatus is composed of a first hinged base, a second hinged base, a rotating telescopic rod and a supporting rod, a first guide rail is fixedly arranged at the bottom of each first hinged base, a second guide rail is fixedly arranged at the bottom of each second hinged base, the first guide rails are buckled in the first annular grooves, and the second guide rails are buckled in the second annular grooves. The supporting auxiliary equipment has reasonable structure and complete functions, realizes thefixing and supporting effect of a red heart pomelo main trunk, and realizes the supporting effect of red heart pomelo branches.

The invention relates to anti-tartar toothpaste and a preparation method thereof. The toothpaste is prepared from the following components in parts by mass: 2 to 6 parts of tetrapotassium pyrophosphate, 15 to 30 parts of nested RGD polypeptide-gelatin nanparticles, 1 to 4 parts of polymethylacrylic acid 2-hydroxyl ethyl ester, 10 to 25 parts of amorphous calcium phosphate microspheres, 1 to 4 parts of lipoic acid, 1 to 4 parts of a surfactant, 1 to 3 parts of distannous citrate and 60 to 80 parts of a matrix. The toothpaste provided by the invention is extremely high in cleaning capacity for the oral cavity, is high in friction property and safety, can effectively clear tartars and whiten teeth, cannot injure the teeth and destroy enamels, and has a certain defense effect on decayed teeth and the tartars; furthermore, the toothpaste is uniform in texture, has a delicate taste, and is rich in foam and stable in property; even if the toothpaste body of the toothpaste is placed for a long time, no water appearance caused by layering is caused; if people use the toothpaste for a long time, a healthy oral cavity environment can be effectively retained, and the teeth can be protected.

The invention relates to a toothpaste for preventing and/or treating oral ulcers, and a making method thereof. The toothpaste comprises, by mass, 1-4 parts of sodium pyrophosphate, 15-30 parts of illite microbeads, 2-6 parts of sucrose acetate isobutyrate, 1-3 parts of sodium pyruvate, 2-8 parts of poly(2-hydroxyethyl methacrylate), 10-25 parts of amorphous calcium phosphate microspheres, 1-4 parts of sodium lauroylglutamate, 1-3 parts of disodium stannous citrate and 50-70 parts of a matrix. The toothpaste has strong cleaning ability to the oral cavity, can effectively inhibit oral bacteria, effectively prevents oral ulcers and keeps the breath fresh. The toothpaste has the advantages of uniform texture , delicate taste, rich foams, stable properties, no layering or water separation after long-term storage, effective keeping of a healthy oral environment after long-term use, and tooth care.

The invention provides a protection device for a spindle lifting rod of a vacuum casting furnace, relates to the field of precision investment casting vacuum casting furnaces, and relates to aviation and aerospace engines, in particular to the protection device for the spindle lifting rod of the vacuum casting furnace, which is arranged along the vertical direction of the spindle lifting rod and wraps a protection sleeve outside the spindle lifting rod. The spindle system is not damaged by splashed metal when the spindle lifting rod conveys a mold shell and is poured, meanwhile, the protective sleeve plays a role in protecting the spindle lifting rod, and the problems that the spindle is abraded and damaged by metal chips when the spindle lifting rod reciprocates and the maintenance cost of the spindle system is high can be effectively solved; the maintenance frequency and cost of the spindle system are reduced, the use efficiency of vacuum casting furnace equipment is improved to a great extent, the situation that the service life of the spindle is shortened due to the fact that the surface of the spindle is damaged by adhesion of splashed molten metal is effectively avoided, and the problems that metal filings on the surface of the spindle are inconvenient to clean and the service life of the spindle is prolonged are solved.