75 results about "Broken tooth" patented technology

The invention relates to an on-line monitoring and early-warning method for the operating state of gearbox equipment. A device with the method comprises a gearbox, rolling bearings and vibration sensors which are arranged on bearing seats and used for monitoring vibration signals of the rolling bear. The method includes: collecting signals of the vibration sensors and reconstructing the signals; carrying out spectral analysis on the total vibration value, the rotation frequency and the multiplication frequency, the mesh frequency and the multiplication frequency and the corresponding vibration amplitude which are all detected by a corresponding sensor on a gear shaft set; and calculating fault factors of parts of the rolling bearings, stripping coefficients of surfaces of gears and fault factors of broken teeth on the surfaces of the gears to be compared with preset warning values respectively, if the preset values are exceeded, the gearbox operates in an abnormal state, if the preset values are not exceeded, the gearbox operates in a normal state, and the results are displayed for reference by a maintainer. The on-line monitoring and early-warning method is developed to judge and locate the gear faults with multi-parameter characteristics to ensure the normal operation of the gearbox equipment.

The invention relates to a hardened-tooth-surface gear, which comprises a gear main body. A fusion covering layer is arranged on the surface of the gear main body. The fusion covering layer comprises a bonding layer, a transition layer, a working layer and a processing layer, wherein the bonding layer is arranged on the external surface of the gear main body; the transition layer is arranged on the top surface of the bonding layer; the working layer is arranged on the top surface of the transition layer; and the processing layer is arranged on the top surface of the working layer. The invention additionally discloses a hardened-tooth-surface gear repair technology, which comprises a pretreatment step for pretreating the hardened-tooth-surface gear to enable the hardened-tooth-surface gear to satisfy repair requirements; a repair step for forming the fusion covering layer on the surface of the hardened-tooth-surface gear; and a processing step for processing the repaired hardened-tooth-surface gear to enable the hardened-tooth-surface gear to satisfy a repair standard. The hardened-tooth-surface gear repair technology provided by the invention can be used for repairing surface wear, cracks and cutting root broken teeth of the hardened-tooth-surface gear to guarantee full engagement of gear teeth, the noise produced during gear teeth engagement is reduced, the gear teeth are prevented from being broken, the rejection rate of the hardened-tooth-surface gear is reduced, the production cost is reduced, the resource waste is reduced, and the economic and social benefits of enterprises are improved.

The invention relates to the technical field of data processing, in particular to a gear broken tooth detection method based on Hough circle detection. According to the method, a pixel code of each line is obtained through line-by-line analysis of a gear binary image; and obtaining a second pixel value sequence corresponding to the pixel code which is the same as the standard code. According to the gear center hole pixel value position in the second pixel value sequence, hole edge pixel points are obtained, and then the circle center is obtained. Performing Hough circle detection on the circle center to obtain a plurality of initial reference circles, and screening out reference circles according to the number of gear information on the edges of the initial reference circles. According to the number of the pixel points of the gear information and the background information on the edge of the reference circle, whether tooth breakage occurs is judged. According to the method, the edge acquisition process is simplified in pattern recognition by combining related electronic equipment, and the detection of the position and degree of the broken tooth is quickly and effectively realized through the analysis of the pixel value on the reference circle.

The invention relates to a special welding electrode for surfacing and repairing broken teeth of a cast iron gear, belonging to the materials science and engineering field. The welding electrode comprises the following chemical components: 35-50wt% of marbles, 3-6wt% of chalk, 20-30wt% of fluorite, 1-3wt% of quartz, 2-4wt% of rutile, 4-7wt% of ferrotitanium, 2-5wt% of ferromolybdenum, 1-3wt% of high carbon ferromanganese, 1-3wt% of ferrosilicon, 4-7wt% of yttrium oxide and 10-14wt% of metallic nickel. The core wire is H08A steel welding wire. An adopted water glass binder has modulus of 2.7-3.0 and concentration (Baume degree) of 48-50. The surfacing welding electrode can be used for surfacing and repairing the broken teeth of the cast iron gear without preheating before welding and heat treatment after welding. The surfacing metal has higher crack resistance and has proper hardness (HB120-220) and abrasive resistance through alloying.

The invention discloses a large spur gear online welding repairing process. The large spur gear online welding repairing process is characterized in that the process is performed according to preparation before welding, welding treatment, and treatment after welding. The welding treatment comprises weldment position adjusting and pre-welding washing, welding broken tooth part flattening and weldment heating, transition base coat welding, and surfacing layer welding; and after welding is finished, comparing is performed through a pre-manufactured tooth template, residual weld joints are cut andflattened through a plasma gouge, then coping is roughly performed through a corner grinding machine, the size of the tooth template is met, and stress is eliminated finally. The large spur gear online welding repairing process has the advantages that online welding repairing of the to-be-welded gear part is finished in a narrow space, a spur gear after surfacing meets the operation size throughmanual grinding, the surface of the spur gear has no welding defect, the subsequent operation period quality is ensured, the maintenance time is shortened, the maintenance cost is reduced, the halt loss is reduced, and reasonable assembly and production are guaranteed.

The invention provides a gear broken tooth laser cladding welding process optimization method based on ansys. The gear broken tooth laser cladding welding process optimization method comprises the steps of S1, determining thermal analysis and stress analysis parameters of a gear material and weld metal powder; S2, determining size parameters of the gear, creating a two-dimensional planar graph ofthe gear, and storing and importing the two-dimensional planar graph into ansys; S3, defining a thermal analysis unit and a structure analysis unit, and then performing mesh generation; S4, taking a heat source model, selecting a heat source calculation formula, and then defining welding process parameters including welding current, voltage, speed and time; S5, on the basis of the step S4, applying a dead unit to a heat source load, wherein the dead unit is used for solving the nonlinear problem of the unit; S6, simulating a temperature field, a stress field and deformation conditions under different welding process parameters by utilizing ansys, and finding out the welding process parameter with the minimum residual stress and deformation. According to the method, the temperature field, the stress field and deformation after gear repairing are directly obtained through a process optimization method. The manpower and material resources are saved, and the cost is reduced.

This invention is revises the cap nut which the custom knows to suppose it to install trough's outline, will cause to install the dadoing to lead (lead angle to be small) lowly or on two above trundle ditch cap nut will not have the broken tooth's question, when will process should install the trough, only need use the face cutter then to process the forming, will reduce the production cost; And return circuit of this invention all establishes in the backflow part, therefore may promote and the cap nut supposes the backflow hole and the load way grade of fit, causes to roll the moving parts movement to be smoother, and reduces the noise production.

A medical minimally invasive dental forceps is disclosed and overcomes problems of long time, a sense of fear of patients and slow postoperation healing of traditional tooth extraction. The dental forceps is characterized in that an upper forceps handle (1), a lower forceps handle (2) and a supporting shaft (3) form an open-mouth forceps, two wings of an end of the lower forceps handle (2) are provided with a left-wing metal plate (5) and a right-wing metal plate (4), the left-wing metal plate (5) is provided with a left silica gel pad (7) through a fixing bolt (6), the right-wing metal plate (4) is provided with a right silica gel pad (8) through the fixing bolt (6), a needle cone shaped root canal screw (10) is provided, the large head of the needle cone shaped root canal screw (10) is connected to a ratchet wheel (11) into one part through a connecting shaft (9), the ratchet wheel (11) is disposed on an opening of the upper forceps handle (1), and the small head of the needle cone shaped root canal screw (10) is disposed below an opening of the lower forceps handle (2). The dental forceps has advantages of a simple structure, convenient and flexible using, and capability of simplifying a tooth extraction process, shortening operation time and reducing intranperative and postoperative complications, and is suitable for extracting broken teeth and affected teeth.

The invention discloses a medicine used for treating odontopathy, which can be made from the following materials in definite proportion: :8-12 shares of cortex kadsurae radicis, 3-5 shares of barberry root bark, 3-5 shares of dragon bone, 3-5 shares of dahurian angelica root, 3-5 shares of acacia catechu, 3-4 shares of frankincense, 3-4 shares of myrrh, 2-3 shares of dragons blood, 1 share of asarum, Chinese wild ginger, 3-5 shares of amber, 3-5 shares of dahurian angelica root, 3-5 shares of halite, 3-5 shares of figwortflower picrorhiza rhizome. The invention has the effects of treating anti-inflammation, alleviating pain, detumescence and hemostasia and has good effect to peridentitis, gingivitis, teeth loosening and broken tooth owing to tumbling. The invention can be applied to preventing the tooth disease and achieving the effect of not losing teeth for the old people.

The invention discloses a device for repairing gears by means of laser cladding, belonging to the field of laser processing. The device comprises a three-dimensional mobile platform, a programmable logic controller (PLC) system, a laser metal deposition system, a fixture and a motor. When the device is in use, the gear to be repaired is fixed on the fixture, and the broken teeth of the gear are enabled to be placed on a horizontal plane by controlling the motor. The device has the advantages of being simple in structure and convenient to operate, improving gear repairing quality and efficiency, having higher flexibility, and being capable of clamping the gears with different inner hole sizes.

The invention relates to a natural convection enhanced heat dissipation structure with non-uniform heat source distribution and a heat dissipation method thereof. The structure comprises a heat dissipation thin substrate, spline teeth with vent holes arranged at the upper portion of the front surface of the heat dissipation thin substrate, inclination teeth arranged at the lower portion of the front surface of the heat dissipation thin substrate, low-power heat sources uniformly distributed at the back surface of the heat dissipation thin substrate, and a plurality of high-power heat sources distributed at the back surface of the heat dissipation thin substrate. A VC (Vapor Chamber) is inlaid in the heat dissipation thin substrate in the high-power heat source distribution dense area and an anisotropic graphene sheet is inlaid in the heat dissipation thin substrate in the high-power heat source sparse area; the VC and the anisotropic graphene sheet have good power flattening effect toeffectively reduce the local temperature at the high-power heat sources, the whole radiator is forming by processing light aluminum so that the weight is light, the heat conducting performance is good, the staggered tooth and broken tooth structures of the spline teeth and the inclination teeth are beneficial to strengthening heat dissipation, and the radiator is simple in structure, convenient toprocess and high in reliability.

The invention discloses a method for preventing and treating tooth loss or tooth breakage of bamboo rats. The method mainly comprises the following steps of 1 preparing a specially-made feed; 2 timely disinfecting feed to improve feed quality; 3 using traditional Chinese medicine anti-inflammatory powder to treat gingival. A formula and a preparation method of the specially-made feed for preventing and treating the tooth loss or the tooth breakage of the bamboo rats are innovated, the gingival is treated and the supplied feed is improved timely when the bamboo rat teeth are in unusual condition, gingival disinfection is performed on the bamboo rats losing teeth or provided with broken teeth and then the traditional Chinese medicine anti-inflammatory powder is coated on the teeth, prevention and treatment are tightly combined, the formula is appropriate, and the method has the remarkably effect on reduction of the tooth loss rate and the tooth breakage rate of the bamboo rats.

The invention discloses a fixing device for grinding teeth of a crusher, comprising a base, an electric push rod is fixedly connected to the upper surface of the base, and the top of the electric push rod overlaps with the lower surface of a first movable plate, The lower surface of the first movable plate is fixedly connected with the upper surface of the base through two elastic devices, and a first rubber pad is fixedly connected to the upper surface of the first movable plate. The fixing device for grinding the crushing teeth of the crusher, through the cooperation between the electric push rod, the second telescopic rod, the driving device, the threaded cap, the fixing rod, the rotating device and the connecting rod, the worker can place the crushing teeth to be polished first. On the first movable plate, then by operating the control panel to extend the electric push rod, and at the same time make the motor rotate forward, the first movable plate and the second movable plate can move close to each other, so that the first movable plate and the second movable plate can move closer to each other. The movable plate can quickly fix the crushing teeth, thereby improving the grinding efficiency of the crushing teeth to a certain extent.

The invention discloses a welding repair method for broken teeth of a large gear of a ball mill. The method comprises the steps that 1, a welding rod is dried and placed in a heat preservation barrelfor standby application; 2, a groove is prepared, specifically, the shape and size of the groove need to be considered when cracks are dug, the groove size needs to be small and no sharp corners or dead corners exist under the condition that the cracks are thoroughly removed, welding is facilitated, and the groove and the two sides of the edge of the groove are ground to have metallic luster within the range of 15-20mm; 3, manual arc welding is adopted for welding; 4, hammering is conducted in time after welding of each section is completed so as to eliminate welding stress; and 5, grinding treatment is conducted after welding is completed. According to the field conditions, in order to obtain a welding seam with the mechanical property meeting the requirement, a proper welding material isselected, and the gear is repaired through a cold welding method. After welding repair, no crack defect is found in dye penetrant inspection, the hardness value meets the requirement, and a good using effect is achieved.

The invention discloses a semisolid die casting forming method for a broken tooth radiator. The semisolid die casting forming method comprises the following steps that A, semisolid slurry or a semisolid blank is prepared; B, the broken tooth radiator is formed through die casting; and C, heat treatment is conducted, and in the step A, the solid rate of the slurry or the blank ranges from 20% to 80%. By means of the semisolid die casting forming method, the service life of the die is prolonged, solid solution heat treatment can be conducted, meanwhile, semisolid slurry layer is in laminar filling, sequential solidification is formed, an inner dense solidification structure in the radiator is guaranteed, and the requirement of communication products for the radiator can be met.

The invention discloses a broken tooth and spindle wear repair process for a single-tooth roller of a crusher. The process comprises the following steps: S1, cutting two sides of the broken tooth or aspindle wear part by oxygen, wherein the cutting depth is 20 mm higher than a wear surface, and cutting a damaged surface into a groove, the section of which is U-shaped, wherein the bottom surface of the groove is arc-shaped; S2, polishing the groove by a grinding machine till a bright and clean surface of a metal is exposed to the inner wall and the bottom surface; S3, carrying out online cladding on the groove by using a laser cladding welding machine; and S4, grinding and polishing a cladding layer. By carrying out online repair on the wear part by adopting the laser cladding welding machine, an original manual welding operating mode is improved, the labor intensity of a welding worker is reduced, and the welding efficiency and the utilization ratio of materials are improved and increased. In addition, the laser cladding welding machine can be adjusted and prepared intelligently, and generation of interlaminar oxides during welding can be avoided by means of a stable welding pointspot power principle of the laser cladding welding machine, so that the cladding welding precision is improved favorably.

The invention relates to a numerical control system based center distance variable gear contact fatigue test bed, and belongs to the technical field of numerical control. The test bed comprises a support assembly, a feeding movement assembly, a transmission assembly, a detector, a test gear case and a tested gear set, a torque sensor is positioned in an input shaft, and the torque of the input shaft is detected and compared with a set torque to compensate or reduce torque adjustment. In the feeding movement assembly, a carriage is positioned in different positions of a guide rail via a servo motor and a ballscrew, the center distance between two pairs of engaged gears is changed, and gears of different modulus are tested. A laminated push-and-pull structure on a casing of the test gear case enables that two half-open type test gear cases form an enclosed space, and oil is prevented from splashing and broken teeth are prevented from flying off during operation of the test bed. A vibration sensor can collect vibration signals of the different modulus of gears in the contact fatigue intensity test.

Disclosed is a special welding rod for repairing and overlaying heavy-duty high-speed broken gear teeth. According to weight percentage wt%, chemical components of the coating of the special welding rod include 25-35% of marble, 14-20% of fluorite, 3-5% of quartz, 2-4% of chalk, 6-8% of high-carbon ferrochrome, 1-3% of high-carbon ferromanganese, 5-7% of graphite, 1-3% of ferrosilicon, 1-3% of ferrotitanium, 5-7% of ferromolybdenum, 3-5% of lanthanum trioxide, 7-9% of metallic nickel, 4-6% of medium-carbon chromium iron and 3-5% of ferrovanadium, and a core wire is made of H08A steel. A gear with broken teeth needing repair is preheated at the temperature of 300-400 DEG C before welding, and is tempered at the temperature of 100-200 DEG C after welding. The special welding rod is convenient in field use and easy in welding, cracking is avoided after welding, welding quality is obviously improved, the surface hardness of the welded gear ranges from HRC (Rockwell hardness) 58 to HRC 63, and the service life of the repaired gear is 3-4 times of that of the original gear.

The invention discloses a wood cutting device. The wood cutting device includes a connection rod, a fixed block, a table board, a sawdust box, a dust prevention cover, a cutting blade, a sleeve rod, a second motor, a transverse plate, a cavity, a slidable plate, a broken teeth gear and a rack; firstly, wood is placed on the upper surface of the table board, a clamp spring at a connection board is pulled, the second motor is switched on to drive the broken teeth gear to rotate, the sleeve rod pushes the wood to move in the direction of the cutting blade to arrive at a position, the second motor is switched off, the clamp spring is loosened, the wood is fixed, a first motor is switched on, through the connection among a second rotation shaft, a first conveying belt, a fist rotation shaft and a second conveying belt, the cutting blade is driven to rotate, the hand can move the cutting blade to complete wood cutting by pressing the dust prevention cover, and in the process of cutting, produced sawdust falls into the sawdust box. In the process of operation, the wood cutting device is driven by the motors and fixed by a clamping mechanism so that operators can save time and labor during usage, the safety is improved, and the operation is simple and convenient.

The invention relates to a medical breaking and recycling device for abandoned dental tooth molds used for oral cavities. The medical breaking and recycling device comprises supports. The supports areconnected with a recycling box. The recycling box is connected with a breaking box. The breaking box is connected with box wall breaking rods. The breaking box is connected with driven bearing pedestals. Each driven bearing pedestal is connected with a driven shaft. Each driven shaft is connected with a driven roller. Each driven roller is connected with a driven breaking rod. The breaking box isconnected with a feed port and is connected with a drive mechanism. The breaking box is connected with driving bearing pedestals and is connected with a discharge port. The recycling box is connectedwith an ultraviolet disinfector. The recycling box is connected with a material taking port. According to the medical breaking and recycling device, by using the breaking box and the recycling box, the aim of effectively breaking the tooth molds and the aim of disinfecting the broken tooth molds are achieved, and the functions of breaking and recycling the abandoned tooth molds used for the oralcavities are achieved.