51 results about "Broken teeth" patented technology

A portable compact emergency dental kit is provided for administering first aid in cases of avulsed, loose, or broken teeth. The kit contains step-by-step instructions for rendering the first aid even by persons untrained in dentistry. The kit contains a quantity of tooth-preserving fluid for temporary retaining knocked out teeth, as well as a tube of dental filling material that sets shortly after being dispensed from the tube. A quantity of gloves, sterile gauze, antiseptic mouth rinse, ice packs and antibacterial wipes is provided in the kit holder.

The invention provides a threaded hole structure quality detection method. A CCD camera and an annular light source are used for quality detection of internal threads. The index items of the detection of the internal threads include external diameter, internal diameter, percentage of thread, number of thread teeth, tooth pitch, tooth depth, and the number of effective teeth. Identifiable ineffective teeth include broken teeth, missing teeth, foreign bodies and burr.

The invention relates to a refabrication method of waste chain wheels for mining. The refabrication method is characterized by including the following steps that (1) the waste chain wheels are selected and waste chain wheels which do not have broken teeth and fatigue cracks are picked out; (2) the waste chain wheels are milled by a numerical control high-speed milling machine according to the chain nest shape of waste chain wheels, irregularly-abraded fatigue layers and hardening layers are removed, the depth of equidistant machining based on the size of an original chain nest is 12-18 mm; (3) the waste chain wheels are arranged on a welding positioner and are matched with a welding robot, consumable electrode gas is used to protect welding technology, build-up-welding materials are used to achieve build-up welding layer by layer, welding requirements are that a back pass weld covers 1/3-2/5 of a front pass weld; (4) the build-up-welded chain wheel nest is milled by the numerical control high-speed milling machine, and the original size of the milled chain nest is recovered. Tests prove that according to the method, the repairing efficiency of the waste chain wheels can be obviously improved, the repaired wheel chains are reliable in quality, and the homogeneity of products is good.

The invention discloses a method of detecting tooth defects of wedges based on edge detection, comprising the steps of (1) acquiring an image of a wedge workpiece, and preprocessing the image; (2) subjecting the wedge workpiece to image template match positioning and image cutting; (3) subjecting the image to edge detection; (4) subjecting the image to median filtering and morphological processing; (5) performing characteristic extraction and judging. The method is capable of detecting and recognizing tooth defects (flat teeth, broken teeth, overlap teeth and polished plates) of wedges accurately on a production line site, the problem that existing manual detection has low speed, low efficiency and high cost is effectively solved, automation level of wedge production is increased, productquality is improved, and the method has good robustness.

A device and its method of use for in situ detection of bent and/or broken teeth on a vehicle engine pulse generator plate. The device includes a pair of detection sensors adapted to detect pulse generator plate teeth during rotation of a pulse generator plate, and a controller in communication with the sensors. The sensors are arranged such that one sensor leads the other with respect to the detection of teeth on a rotating pulse generator plate. Rotation of a pulse generator plate in the presence of the sensors will cause the sensors to produce an output signal each time a tooth passes by. The signals from the sensors form associated pulse trains that are evaluated by a microprocessor device and associated program of the controller to determine if the pulse generator plate has any bent and/or broken teeth.

The invention relates to a patch antenna, in particular to a double-fed dual-polarization microstrip antenna. The double-fed dual-polarization microstrip antenna comprises a dielectric substrate and a radiation patch arranged on the front face of the dielectric substrate, a geometric center of the radiation patch is coincided with that of the dielectric substrate 1, and the back face of the dielectric substrate is grounded. The radiation patch is in a shape of a toothed gear and comprises a central circular piece, four identical concentric arc pieces, four identical radial strip pieces and four teeth; the four concentric arc pieces and the four identical radial strip pieces are symmetrically arranged on the outer periphery of the central circular piece, and each concentric arc piece is connected with the central circular piece through one radial strip piece; the four teeth are uniformly distributed and orthogonally positioned at four ends of the radiation patch and are arranged at two ends of each concentric arc piece, two adjacent teeth of the four teeth are identical U-shaped teeth, and the other two adjacent teeth are identical broken teeth which are U-shaped teeth with radial middle openings serving as feed ports. The double-fed dual-polarization microstrip antenna is high in isolation and has excellent dual polarization characteristics.

The invention discloses a combined feed processing and granulating device, which comprises a feed crushing and feeding module, a mixing and stirring extrusion discharging module and an extrusion granulation discharging module. The upper end of the installation plate is provided with a crushing operation cylinder, and the upper end of the crushing operation cylinder is provided with a cone feeding cylinder. The upper and lower sides of the antiemetic city crushing operation cylinder are symmetrically and evenly provided with material guide holes, and the right side of the crushing operation cylinder is inlaid A crushing motor is provided, and the crushing motor is provided with a crushing shaft running through the crushing shaft to the left, and crushing teeth are uniformly arranged on the outside of the crushing shaft, and the crushing teeth on the crushing shaft are uniformly provided with passive crushing gears on the inside of the crushing shaft. The invention has the advantages of compact structure design, simple operation, simplified transmission structure design, stable transmission, uniform mixing, good granulation quality and fast speed.

The invention provides a gear driving system fault simulation experiment table with a part quick replacement function and mainly relates to double-span double-rotor gear driving fault simulation systems capable of quickly replacing bearing and gear parts and setting and adjusting multiple faults. The experiment table can be applied to mechanical engineering and measurement and control instrument course experiment teaching and relevant scientific research. The experiment table can simulate a bearing normal state, a bearing rolling body fault, an inner ring fault, an outer ring fault, a holder fault, a gear normal state, gear broken teeth, a gear pitting fault, a mixing fault of two types of parts, gear rotation unbalance and other fault types. The experiment table provides an experiment basis and technical guidance for a state monitoring and fault diagnosis course of a rotating mechanical system driving system, fault type setting operation is quick and convenient, popularization is easy, and a guarantee is provided for relevant experiment teaching and scientific research in institutions of higher education.

The invention, which belongs to the technical field of building construction, in particular relates to a bedding soil tamping device for a construction site, thereby solving a problem that the existing tamping device for flattening the municipal administration path does not have the functions of automatic filling and bedding. The tamping device comprises a mounting shell. A fixing cylinder is connected to the inner wall of one side of the top of the mounting shell by a bolt. First sliding slots are formed in the two sides of the fixing cylinder; a same horizontally arranged limiting rod is connected to the inner walls of the two sliding slots in a sliding manner; and the outer wall of the bottom of the limiting rod is connected with a support post by a bolt. A through hole is formed in theouter wall of one side of the bottom of the mounting shell; and limiting plates are connected to the inner walls of two ends of the through hole by bolts. According to the invention, with a servo motor, a driving gear, and a driven gear, tapered broken teeth on a rotating shaft are driven to make rotation and thus the soil entering a storing shell is smashed, so that the uneven roadbed can be filled with soil.

The invention relates to a method for repairing a circular saw web of a flying sawing machine. The method sequentially comprises the following technical processes of shaping the saw web, repairing broken teeth, shaping the tooth shape of a tooth grinding machine, quenching at high frequency and tempering at low temperature, so that the shortcoming of pure mechanical repairing of the tooth grinding machine is overcome; and saw teeth of the saw web have the original performance, and the service life of the saw web is not shortened; theoretically, the saw web can be repaired for over hundred times; the cutting area is reduced by about 0.1 to 0.5 percent every time when the saw web is repaired; therefore, the cost of the saw web during production of cold-formed sectional steel is reduced greatly; and the production cost is reduced.

The invention discloses a machining system for a milling cutter and a machining method of the machining system, relates to the technical field of milling cutter manufacturing, and aims to solve the problems that in the using process of an existing milling cutter broken tooth grinding machine, a to-be-machined blank needs to be manually clamped to a clamping piece and the automation degree is quitelow; according to the technical scheme, the machining system is characterized by comprising a rack, a polishing mechanism and a clamping mechanism, the clamping mechanism is slidably connected to theinterior of the rack in the direction close to or away from the polishing mechanism, and the polishing mechanism is fixedly connected to the interior of the rack; a feeding mechanism used for automatically feeding blanks is arranged on the side, located on the grinding mechanism, of the rack, and a clamping discharging mechanism is arranged on the side, away from the grinding mechanism, of the feeding mechanism. The feeding mechanism comprises a storage bin, a feeding port and a feeding push rod, the storage bin is fixed to the side, located on the grinding mechanism, of the rack, the feedingport is formed in the bottom end of the storage bin, and the feeding push rod is connected to the bottom end of the feeding port in a sliding mode. The effects of automatically completing feeding ofthe steel blanks and improving the automation degree are achieved.

The invention discloses a use method for an anti-adhesion crusher for crushing adhesive oil shale. When the crusher crushes the adhesive oil shale, tailings dry powder conveyed by a scattering and feeding device through high pressure pipelines is continuously sprayed by spraying holes of a left scattering device and a right scattering device which respectively correspond to a left roller and left crushing teeth and a right roller and right crushing teeth to form adhesion layers; the crushed adhesive oil shale and the tailings dry powder adhesion layers naturally fall down and are discharged by a discharging hole; and meanwhile, scraper heads of a left scraper and a right scraper respectively clean occluded gaps of the left crushing teeth and the right crushing teeth and the roller walls of the left roller and the right roller. The oil shale tailings powder is uniformly sprayed on the surfaces of the rollers and teeth, a layer of tailings dry powder anti-adhesion layer is formed, the scrapers are correspondingly arranged between tooth pitches of the two rows of crushing teeth, the production efficiency of the crusher for the adhesive oil shale is improved, and a crushing quality of the adhesive oil shale is ensured.

The invention provides a ratchet wrench. The ratchet wrench comprises a body, a ratchet, two braking blocks, two elastic pieces and a reversing piece. The material strength of the braking block is greater than that of the ratchet; in a ratchet wrench pulling operation, if the applied force exceeds the limited and bearable torsion at the meshed part of the ratchet teeth of the ratchet and the teethpart of the braking block to cause tooth breakage, the tooth part of the braking block is instantly meshed and positioned with a good ratchet tooth which is positioned behind the broken tooth and isengaged again, so that the effect of ensuring the operation and personal safety of an operator is achieved.

The invention provides an external circulation type ball screw device comprising screw shaft and nut having first and second screw grooves. A circulation member comprises first leg, second leg and connection portion. The first leg comprises a first end surface having first inner and outer points, and the second leg comprises a second end surface having second inner and outer points; first and second entrances formed on the first and second end surfaces of circulation passage; first and second thickness respectively provided between the first entrance and the first inner and outer points thereof; the second thickness being greater than the first; the third and fourth thickness respectively provided between the second entrance and the second inner and outer points thereof; the fourth thickness being greater than the third. The groove wall of the second screw groove occupied and the occurrence of broken teeth of the nut are reduced.

The invention relates to a motor rotor structure, in particular to a rotor structure for reducing asynchronous motor cage rotor core punching tooth expansion. The technical problems that an existing motor rotor is prone to quality problems such as rotor tooth expansion and broken teeth, and motor operation is affected are solved. The rotor structure for reducing asynchronous motor cage rotor core punching tooth expansion comprises a rotor punching which is arranged on a rotating shaft in a sleeving mode and rotates around the rotating shaft coaxially, a rotor end plate, a rotor pressing ring, a guide strip and an end ring. The rotor end plate compresses the external circle portion of the rotor punching. On the inner circle portion of the rotor punching, the rotor end plate is matched with the rotor pressing ring, and a gap is reserved between the rotor end plate and the rotor punching; the rotor pressing ring also compresses the outer circle tooth portion of the rotor. According to the motor rotor structure, the problem that rotor tooth expansion is caused by high temperature during welding of the motor rotor guide strip and the end ring is greatly solved, the problem of broken teeth possibly caused in the motor operation is avoided, and the motor operation reliability is improved. The guide strip and the punching are suitable in fit dimension, punching loosening is avoided, and reliability is improved.

The invention relates to the technical field of reducers, in particular to a large-torque bevel gear-double-cycloidal speed reduction device of a rocket launching movable platform. The speed reduction device is characterized in that a secondary speed reduction device is composed of a bevel gear pair and a double-cycloidal transmission, wherein (A) the double-cycloidal transmission consists of a frame, an output shaft, supporting bearings, three cycloidal gears with a phase angle of 120 degrees, an eccentric bearing, a hypocycloid gear ring, a front frame, an input shaft and a W output mechanism, the input shaft is supported in the inner hole of the front frame through the bearing, the shaft extension end of the input shaft is linked with the eccentric bearing, and the input end of the input shaft is linked with a large bevel gear; the front frame is sequentially linked with the hypocycloid gear ring and the frame into a whole; and the output shaft is supported in the inner hole of the frame through the bearing; and (B) two symmetrical devices of small bevel gear shafts, which are meshed with the large bevel gear are supported in box wall holes of the front frame through the bearings, one small bevel gear shaft is linked with a motor, and the other small bevel gear shaft is linked with a manual handle. The large-torque bevel gear-double-cycloidal speed reduction device has the following beneficial effects: (a) the double reduction is realized, the axial size is short, the weight is light, and high degree of lightweight is realized; (b) the cycloidal gears have no broken teeth, and the three cycloidal gears have the transmission bearing capacity greater than that of a planet with only four planetary gears; and (c) the cost is reduced by 40-55%.

The invention discloses an asphalt removal board for municipal engineering, which comprises a board body. The front side of the board body is adjacent to and arranged in parallel with several cleaning teeth protruding forward. For the rear shovel teeth on the side, the front teeth are provided with a stretching edge inclined from bottom to top. The front teeth also include a flat pressure surface, which intersects with the spread surface to form a front cutting edge, so that the front teeth form a Triangular pyramid, back shovel teeth are also triangular pyramid structure. The front broken teeth can first destroy the contact position between the asphalt and the ground. If the rear shovel teeth are ignored, a fragile belt of undamaged asphalt and the ground will be formed between the adjacent two front broken teeth, and then The shovel teeth can destroy and scoop up this fragile band, and the fragile band is isolated, so it can be scooped up easily. The invention is used for cleaning asphalt on the ground.

The invention relates to a medicine packaging box glue-coating surface breaking device. The device comprises a workbench, and a pressing wheel and a surface breaking wheel, wherein the pressing wheeland the surface breaking wheel are arranged at the upper and bottom relative to the workbench; rotating axes of the pressing wheel and the surface breaking wheel are parallel; surface breaking teeth are arranged on the periphery of the surface breaking wheel; a circle of groove is arranged in the middle of the periphery of the pressing wheel; the surface breaking wheel is opposite to the groove, and the surface breaking teeth of the surface breaking wheel extend into the groove. The broken teeth of the broken wheel is used for cutting a broken seam on the film covering surface of the paper piece, and a film covering layer on the surface of the broken seam paper piece is broken; in the subsequent gluing process, the adhesive can penetrate into the film covering layer and dip into the paperbody, so that the paper body of a packaging box can be bonded together after gluing, the bonding effect is good, and the paper body is not easy to separate.

The invention discloses roll teeth with wear-resisting metal for a toothed roll crusher. The roll teeth comprises a protection platform and a teeth handle, wherein teeth and reinforcing ribs which are distributed at intervals and are integrally connected are arranged on the protection platform, the upper parts of the teeth are integrally provided with the wear-resisting metal, a mounting hole is formed in the protection platform, and the teeth handle is integrally connected to the bottom of the protection platform. With the adoption of the roll teeth provided by the invention, grains of a product are uniform, number of over crushed grains is low, the energy consumption is low, the capacity is high, the crushing efficiency is high, the operation is table, the noise is small, little dust is generated, consumption of precious metal is little, the manufacturing price is low, the adjustment and maintenance are convenient, especially the broken teeth repairing problem is solved by virtue of the arrangement of the reinforcing ribs, and therefore, the operation and maintenance costs of equipment are greatly reduced.