3115results about "Gearing elements" patented technology

The invention discloses a high-precision and high-reliability harmonic reducer tooth profile simulation machining design method, and belongs to the field of precision transmission. A composite cycloid flexible gear tooth profile is designed by establishing a harmonic reducer geometrical relationship model, deducing a flexible gear deformation equation, an accurate rotation angle relationship and a meshing theory based on an envelope method, and a conjugate region and a conjugate tooth profile are calculated by utilizing MATLAB. Actual deformation and theoretical deformation errors of the flexible gear are analyzed through finite element simulation, flexible gear profile parameters are optimized, an actual neutral layer curve is generated, and then a rigid gear profile is enveloped and calculated. The tooth profile design adopts a non-zero inclination angle composite cycloid, so that the meshing area is expanded by more than 30%, and the maximum stress of the flexible gear is reduced by 22.75% in combination with a linear modification method and a finite element modification method. In addition, through a multi-physical field simulation verification system (including static deformation, dynamic contact and fatigue life prediction) and a neural network optimization tooth shape parameter, the transmission performance is remarkably improved. According to the method, the torsional rigidity can be improved by 66%, and the transmission error is controlled within a high-precision range.

The embodiment of the invention discloses a harmonic reducer, a mechanical arm and cleaning equipment, the harmonic reducer comprises a flexible gear, a connecting part and an output part, in the manufacturing process of the harmonic reducer, the protruding connecting part is formed on the surface of the flexible gear, production and machining of the flexible gear and the connecting part are more convenient, the machining precision can be improved, and the machining efficiency is improved. For example, the flexible gear and the connecting part which are integrally formed can be manufactured through an injection molding process, a connecting hole process in the traditional technology is replaced, the probability of deformation of the connecting part can be reduced or eradicated, and then the transmission precision of the harmonic reducer is guaranteed. In the assembling process, the output part is connected with the flexible gear through the connecting part, the connecting part protrudes out of the surface of the flexible gear, at least part of the connecting part can stretch into the output part, or at least part of components of the output part are arranged on the connecting part in a sleeving mode, and therefore rapid assembling of the output part and the connecting part can be facilitated; and the output part is conveniently connected with the flexible gear.

A transmission device for a motor vehicle includes a gearwheel space, a gearwheel received in the gearwheel space and having at least one oil bunker for supplying oil for lubricating the gearwheel, and at least one oil return device. The oil is conveyable from the oil bunker into the gearwheel space. At least one oil sump for catching the oil is arranged in the gearwheel space. At least one partition is arranged between the oil bunker and the oil sump for separating the oil sump from the oil bunker. The at least one oil return device includes at least one wiper for wiping the oil from the gearwheel and at least one outlet for removing the wiped oil into the oil bunker. The wiper and the outlet are arranged on different sides of the at least one partition and are connected by at least one fluid connection.

An optimization method of the tooth profile modification of the cycloid gear is provided, and optimizes the method of equidistant-distance combination modification of the tooth profile of the cycloid gear, with the help of multi-objective optimization algorithm based on pressure angle of tooth profile, curvature radius and contact performance, the working range of the tooth profile modification of the cycloid gear is determined, and the optimal modification amount of the cycloid pin gear planetary reducer is determined, the tooth profile of the cycloid gear is modified to compensate these errors, ensure that it has reasonable tooth side clearance, lubrication and assembly, and improve the transmission efficiency and bearing capacity of the cycloid pin gear planetary reducer. The optimization method has the effects of high precision transmission, low noise operation, improving transmission efficiency, prolonging fatigue life and reducing space occupation.

The embodiment of the utility model discloses a harmonic reducer, a mechanical arm and cleaning equipment, the harmonic reducer comprises a wave generator and an input assembly, and a first cavity is formed in an input shaft of the input assembly, so that in the working process of the harmonic reducer, power can be input through the input shaft, and the input shaft drives the wave generator to rotate. When a cable or a pipeline needs to be led into the harmonic reducer, the cable or the pipeline can utilize the first cavity in the input shaft, the cable or the pipeline can penetrate through the input shaft through the first cavity to complete cable arrangement, on the basis of full utilization of the internal space of the input assembly, layout of the cable and the pipeline is more convenient, and the practicability is high. The size of the harmonic reducer is reduced, the structure of the harmonic reducer is more compact, meanwhile, a cable or a pipeline penetrates through the input shaft with the first cavity, winding can be avoided, the structure of the harmonic reducer can be simplified, the cost of the harmonic reducer is reduced, and the working reliability of the harmonic reducer is improved.

The invention discloses a mining chain wheel repaired based on an intelligent optical tracking technology and a technology. The repairing technology comprises the following steps that S1, an optical scanning device is used for scanning a worn chain wheel, surface point cloud data of the chain wheel are obtained, and an actual three-dimensional model of the chain wheel to be repaired is generated according to the point cloud data; s2, Boolean operation is carried out on the actual three-dimensional model generated in the step S1 and a preset chain wheel standard digital model, so that a relative wear model only representing a chain nest wear area is extracted; s3, based on the relative wear model, automatically generating a robot welding path for filling a wear area, and generating a repair program; and S4, the welding robot is controlled to execute the repairing program generated in the step S3, and self-adaptive surfacing repairing is conducted on the abrasion area of the chain nest. According to the method, through a digital closed loop of accurate scanning, model comparison, automatic programming and robot repairing, accurate repairing of irregular abrasion of each chain nest is achieved, the repairing quality is improved, and the maintenance period is shortened.

The embodiment of the utility model discloses a harmonic reducer, a mechanical arm and cleaning equipment, the harmonic reducer comprises a flexible gear, a connecting part and an output part, in the manufacturing process of the harmonic reducer, the protruding connecting part is formed on the surface of the flexible gear, production and machining of the flexible gear and the connecting part are more convenient, the machining precision can be improved, and the machining efficiency is improved. For example, the flexible gear and the connecting part which are integrally formed can be manufactured through an injection molding process, a connecting hole process in the traditional technology is replaced, the probability of deformation of the connecting part can be reduced or eradicated, and then the transmission precision of the harmonic reducer is guaranteed. In the assembling process, the output part is connected with the flexible gear through the connecting part, the connecting part protrudes out of the surface of the flexible gear, at least part of the connecting part can stretch into the output part, or at least part of components of the output part are arranged on the connecting part in a sleeving mode, and therefore rapid assembling of the output part and the connecting part can be facilitated; and the output part is conveniently connected with the flexible gear.

The invention relates to a planetary gear (10) for a planetary transmission (1), wherein a gear ring (12) of the planetary gear (10) has such elasticity that the gear ring (12) of the planetary gear (10) is designed to be radially spring-loaded simultaneously by a ring gear (14) and a sun gear (16), wherein the gear ring (12) of the planetary gear (10) is designed to form a double-flank contact with the ring gear (14) and the sun gear (16) in response to the radial spring-loading. The invention further relates to a steering gear for a steering system of a motor vehicle.

The invention discloses an L-shaped flexible inner gear ring structure in a planetary transmission system, and relates to the technical field of planetary gear transmission systems. The extension flexible ring is formed by extending the lower end face of the inner gear ring body in the vertical direction, the extension flexible ring has the adjustable vertical length and the adjustable radial thickness, and the overall flexibility of the gear ring structure is adjusted by changing the length and the thickness of the extension flexible ring. According to the L-shaped flexible inner gear ring structure in the planetary transmission system, due to the fact that the extension structure is designed on the lower end face of the inner gear ring body, the overall flexibility of the gear ring structure can be improved by changing the extension length and thickness, and the flexibility of the structure is greatly improved; the non-uniformity, caused by machining errors and installation errors of system components, of transmission torque of all branches of the system can be compensated, and the uniform load performance of the planetary transmission system can be improved.

The utility model relates to a three-position clutch switching device which comprises an input shaft, clutch outer teeth, a manual chain wheel, clutch inner teeth, a clutch sleeve, a pneumatic chain wheel, a seat frame and a switching shifting mechanism. The input shaft is fixedly connected with clutch outer teeth, two sides of the clutch outer teeth are respectively connected with a manual chain wheel and a pneumatic chain wheel through bearings, clutch outer teeth are externally provided with clutch inner teeth and a clutch sleeve, one ends of the manual chain wheel and the pneumatic chain wheel are provided with chain wheels, and the other ends of the manual chain wheel and the pneumatic chain wheel are provided with external splines matched with the clutch inner teeth; and a three-position clutch switching shifting mechanism is arranged between the clutch sleeve and the seat frame. The clutch switching device for switching the three kinds of power is used for switching the three kinds of power of a special gate device. The special gate device is driven by the motor normally, and the special gate device can be opened and closed emergently by a manual or pneumatic emergency operating mechanism in case of power failure, so that the safety of the special gate device is improved, the structure is compact, and the operation is simple.

The utility model relates to a periodic modification structure of a reciprocating mechanical transmission gear, which comprises a transmission gear, a non-meshing surface of the transmission gear is modified to form a meshing clearance, and the meshing surface is gapless. The gear backlash on the meshing side of the gear is eliminated to prevent the gear from being knocked in the return stroke due to the alternate change of positive and negative torque, the non-meshing side is shaped to form the backlash to prevent the interference seizure phenomenon in the gear transmission process, and the gear transmission can achieve the states of more stable operation and lower vibration noise after being changed. The transmission gear is especially suitable for transmission gears of piston connecting rod reciprocating motion machines such as Stirling engines and diesel engines.

The invention discloses a ship shaft generator and an operation method thereof, the ship shaft generator comprises a generator and an execution device, a ship main shaft is provided with a driving belt wheel, the generator is provided with a driven belt wheel, and the driven belt wheel and the driving belt wheel are connected through a transmission belt; the driving belt wheel comprises a shaft sleeve, a middle wheel ring and an outer wheel ring, the shaft sleeve is fixedly connected to a ship main shaft, and a rotary buffering mechanism is arranged between the middle wheel ring and the outer wheel ring; a plurality of locking pieces are arranged on the middle wheel ring in a sliding mode and can move in the radial direction of the middle wheel ring. The actuating mechanism controls the locking piece to move between the locking position and the unlocking position; when the locking piece is located at the locking position, the shaft sleeve and the middle wheel ring are connected. The connecting state of the shaft sleeve and the middle wheel ring is controlled through the locking piece, when maintenance is needed, the executing device switches the locking piece to the unlocking position, the generator can be directly maintained at the moment, ship navigation is not affected, and navigation pause caused by maintenance is avoided.

The anti-falling overspeed protection device comprises the cargo carrying table and a guide seat, safety tongs are arranged on the cargo carrying table, the safety tongs are connected with a safety tongs connecting plate, and the safety tongs connecting plate is fixedly connected with a connecting rod and an overspeed connecting rod; the overspeed connecting rod is fixedly connected with the middle of the safety gear connecting plate, one end of the overspeed connecting rod is hinged to the cargo carrying table mounting plate, and the other end of the overspeed connecting rod is fixed to the overspeed protection steel wire rope. The upper end of the compression rod penetrates through the supporting spring and is fixed at the lower end of the guide seat through a locking nut; a guide rod is further fixed to the lower end of the guide seat through a nut, the guide rod penetrates through the spring support and the compression spring, a pulley shaft penetrates through the upper end of the guide seat, and the pulley shaft further penetrates through the pulley and the pulley bearing and is fixed to the pulley mounting plate through an end cover. The safety protection device is used for safety protection when rope breaking, rope loosening or stalling and overspeed happen to the cargo carrying table of the stacking machine.

A carrier rotatably supports a first pinion gear and a second pinion gear that rotate integrally with each other. One of the carrier and a ring gear is connected to a first gear so as to rotate integrally with the first gear. A second gear meshes with the first gear. The first gear and the second gear are each a double helical gear having a pair of tooth portions with mutually opposite helix directions. The first pinion gear and the second pinion gear are each a helical gear. The helix directions of the tooth portions of the first pinion gear and the second pinion gear are set such that the thrust load that the first pinion gear receives from a sun gear and the thrust load that the second pinion gear receives from the ring gear are opposite to each other.

A steer-by-wire system for a vehicle includes a rack moveable in an axial direction and defining a groove extending in the axial direction of the rack. The system also includes a housing surrounding at least a portion of the rack. The system further includes an anti-rotation device disposed proximate an outer surface of the rack at the mounting location of the rack and within the housing, the anti-rotation device comprising a bearing seated within the groove of the rack. The system yet further includes a delash bearing assembly in contact with the rack to radially bias the rack to a desired position.

The embodiment of the utility model discloses a harmonic reducer, a mechanical arm and cleaning equipment, the harmonic reducer comprises a rigid gear, a flexible gear and an output part, and in the working process of the harmonic reducer, the output part can be connected to one of the flexible gear and the rigid gear to output power. The rigid gear of the harmonic reducer comprises the ring part, the flexible gear is meshed with the ring part, and the rigid gear is manufactured through the injection molding process, so that the ring part is manufactured through the injection molding process, the production cost and the weight of the rigid gear can be reduced, the cost and the weight of the harmonic reducer are further reduced, and application and popularization of the harmonic reducer are facilitated; particularly, the harmonic reducer can be conveniently applied to a movable intelligent household appliance, and the intelligent household appliance can move more flexibly while the transmission effect can be guaranteed.

A firearm having a laser induced friction surface. A method for forming the laser induced friction surface on the firearm may includes the steps of disposing the laser machine adjacent to a component of the firearm, adjusting the laser machine, then applying the laser beam of the laser machine onto a component surface.

The utility model provides a flexible gear, a harmonic reducer, a mechanical arm and automatic cleaning equipment, the flexible gear comprises a gear body and a connecting part, the connecting part is arranged on the gear body, and the connecting part protrudes out of the surface of the gear body. The flexible gear is provided with the gear body and the connecting part protruding out of the surface of the gear body, so that the problem of shrinkage during injection molding of the connecting hole in the prior art is solved, and the defects of insufficient injection molding filling and the like of the tooth shape caused by shrinkage of the connecting hole are effectively overcome, so that the transmission precision is improved, and the flexible gear can stably and accurately transmit power in the transmission process; and the flexible gear can be more easily integrally formed by adopting an injection molding process, so that the yield is improved. And by arranging the multiple connecting columns, stress can be dispersed, and connection between the flexible gear and the torque output carrier is more stable and reliable. Compared with the mode that a connecting hole is formed in the flexible gear in the prior art, the flexible gear in the embodiment is higher in overall strength, and the service life of the harmonic reducer can be prolonged.

The high-strength transmission worm shaft comprises a worm main shaft and a plurality of lubricating strips, the surface of the worm main shaft is provided with a plurality of spiral edge teeth, the surface of each spiral edge tooth is provided with a spiral tooth groove, the lubricating strips are installed on the inner sides of the spiral tooth grooves in an embedded mode, each spiral edge tooth is of a double-edge structure, and the spiral tooth grooves are located between the double-edge spiral edge teeth. The section of the spiral tooth groove is of a V-shaped structure, and the surface of the lubricating strip abuts against the inner side of the spiral tooth groove in an interference mode. According to the utility model, through the structural design that the graphite strip lubricating strips are embedded in the spiral edge teeth on the surface of the worm main shaft, an integral worm shaft structure is formed, and the friction of tooth surfaces in the transmission process is effectively reduced due to the self-lubricating characteristic of the graphite strips, so that the graphite strips are uniformly distributed in the transmission process, the wear rate is further reduced, and the service life of the worm is prolonged. And the lubricating effect and the structural durability are improved.

The utility model relates to the technical field of chain wheels, in particular to a chain wheel structure convenient to disassemble and assemble, which comprises a rotating shaft, a bearing for supporting is sleeved on the outer wall of the rotating shaft, a chain wheel is sleeved on the outer wall of the rotating shaft, and the chain wheel is formed by splicing three groups of one-third wheels. The one-third wheels connected with the sliding buckles can be pushed to move through the arc-shaped grooves in the rotating disc by manually pushing the rotating disc to rotate, so that the three sets of one-third wheels can synchronously face the center conveniently, installation is convenient, and after the three sets of one-third wheels are completely attached, the elastic telescopic rods can be rotated to be inserted into the limiting grooves in the designated positions correspondingly; and when the corresponding chain wheel needs to be disassembled, a user only needs to push a pressing block to extrude an inclined face pushing block, so that an elastic telescopic rod retracts and is pulled out of a limiting groove, limiting can be relieved, and the purpose of avoiding disassembling the chain wheel is achieved.

A feeder housing shaft sprocket segment comprising: a sprocket segment body (300) extending in a circumferential direction around a center axis (A) from a leading edge (304) to a trailing edge (306), wherein the leading edge (304) and trailing edge (306) subtend a segment angle about the center axis (A), the segment angle being a first unit fraction of 360°; an outer sprocket perimeter (308) comprising a plurality of teeth (310) evenly arranged in the circumferential direction about the center axis (A) with each tooth (310) spaced by a tooth angle from each adjacent tooth (310), the tooth angle being a second unit fraction of 360°; and a plurality of engagement surfaces (312) extending towards the center axis (A) and facing in the circumferential direction (C), the plurality of engagement surfaces (312) being asymmetrical relative to a plane (P) defined by the center axis (A) and a radial projection from the center axis (A) that bisects the sprocket segment body (300) midway between the leading edge (304) and the trailing edge (306).

Filtering pullies with a hub adapted to be fixed to a rotating shaft, a crown mounted coaxially and rotationally free on the hub, at least one elastic group arranged circumferentially with respect to the hub and the crown and interposed, each, between a pair of first elements integral with the hub and between a pair of second elements integral with the crown are disclosed. The pulley has a dust protection lip carried integrally by said hub and configured to slide, in tight manner, with respect to an element integral with said crown. The dust protection lip is a labyrinthine sealing lip.

Methods and apparatus for a composite bicycle front sprocket are disclosed herein. One embodiment discloses a composite bicycle front sprocket assembly having an outer assembly of a first material. The bicycle front sprocket assembly also has a center assembly of a second material. The center assembly is disposed at least partially within the outer assembly. The center assembly is irremovably coupled with the outer assembly. The center assembly is irremovably coupled with the outer assembly without an external fastening device to irremovably couple the center assembly with the outer assembly.

The utility model relates to the technical field of gear boxes, in particular to a gear box for a high-power ocean vessel. The gear box comprises a box body, a PTO shaft, a gear shaft, a clutch oil cylinder and an output shaft are rotationally installed in the box body, the PTO shaft is in transmission connection with the clutch oil cylinder, the clutch oil cylinder is connected with the gear shaft through a clutch, an output gear is arranged on the output shaft and comprises an outer gear ring and an installation disc, and the installation disc is detachably connected to the inner side of the outer gear ring. The outer gear ring is connected with the gear shaft in a meshed mode, and a plurality of weight reduction grooves are formed in the installation disc. During use, the clutch oil cylinder drives the gear shaft and the output shaft to rotate through the clutch to provide power for advancing of a ship. Meanwhile, the clutch oil cylinder drives the PTO shaft to rotate so as to drive an external generator to generate electricity. The split type design is adopted for the output gear, the weight reduction groove is formed in the installation disc, the high-power transmission requirement can be met, the overall weight of the output gear is lighter, and the output gear is easier to assemble and disassemble.

The embodiment of the invention discloses a harmonic reducer, a mechanical arm and cleaning equipment, the harmonic reducer comprises a rigid gear, a flexible gear and an output part, and in the working process of the harmonic reducer, the output part can be connected to one of the flexible gear and the rigid gear to output power. The rigid gear of the harmonic reducer comprises the ring part, the flexible gear is meshed with the ring part, and the rigid gear is manufactured through the injection molding process, so that the ring part is manufactured through the injection molding process, the production cost and the weight of the rigid gear can be reduced, the cost and the weight of the harmonic reducer are further reduced, and application and popularization of the harmonic reducer are facilitated; particularly, the harmonic reducer can be conveniently applied to a movable intelligent household appliance, and the intelligent household appliance can move more flexibly while the transmission effect can be guaranteed.

The utility model discloses a novel output gear structure, which belongs to the field of gears and comprises a gear hub and a plurality of gear teeth, the gear teeth are inserted on the gear hub, each gear tooth consists of a gear tooth main body and a T-shaped mounting strip, and the T-shaped mounting strips are fixedly mounted at the inner ends of the gear tooth main bodies. Two limiting structures are installed on the gear hub and located on the two sides of the multiple gear teeth, each limiting structure is composed of an annular baffle, a first connecting ring and a second connecting ring, the first connecting rings are fixedly installed on the inner walls of the annular baffles, and the second connecting rings are fixedly installed at the inner ends of the first connecting rings; by arranging the gear composed of the gear hub and the gear teeth which can be detached from each other, the gear teeth which are abraded or broken can be independently replaced, the gear hub does not need to be replaced together, and therefore waste of resources can be reduced, and meanwhile the maintenance cost can be reduced.

The high-strength flexible gear comprises a cylinder and a cylinder bottom flange, the cylinder comprises a gear ring section and a cylinder section, a fillet transition section is arranged between the cylinder section and the cylinder bottom flange, and a plurality of reinforcing ribs evenly distributed around the circle center of the cylinder section are arranged on the inner wall of the cylinder section. The reinforcing ribs extend to the position, corresponding to the tail end of the gear ring, of the inner wall of the barrel body from the fillet transition section so as to enhance the overall strength of the flexible gear, the rigidity of the inner wall of the barrel section of the flexible gear is remarkably improved through introduction of the reinforcing ribs, and the reinforcing ribs are arranged on the inner wall of the barrel section and extend to the position, corresponding to the tail end of the gear ring, of the inner wall of the barrel body from the fillet transition section. The reinforcing ribs are evenly distributed around the circle center of the cylinder section and extend to the position, corresponding to the tail end of the gear ring, of the inner wall of the cylinder body from the fillet transition section, a stable supporting network is formed, and assembly prestress generated when the wave generator is installed in a flexible gear is dispersed and reduced. Therefore, the risk of local plastic deformation or breakage of the flexible gear due to uneven stress is reduced.

The invention relates to the technical field of metal material strengthening treatment, in particular to a micropitting-resistant wind driven generator gear carburizing and quenching composite strengthening process which comprises the following steps: S1, gear blank pretreatment and surface activation; s2, gradient carburizing strengthening treatment; s3, grain refinement annealing treatment; s4, step quenching strengthening treatment; s5, performing deep cooling and thermal cycle treatment; s6, directional tempering regulation and control treatment; s7, composite shot peening strengthening treatment is conducted; and S8, an antifriction composite film layer is deposited on the surface of the gear subjected to shot peening strengthening in the S7. According to the method, through a synergistic strengthening mechanism of gradient carburization, step quenching, structure regulation and control and surface functionalization, the residual stress distribution and tribological performance are optimized while the high surface hardness of the gear is kept, and the technical problems that in a traditional technology, the carburized layer is concentrated in stress, uneven in structure, single in surface performance and the like are solved.

The present invention provides a harmonic reduction mechanism, a harmonic speed reducer, and a robot, wherein the harmonic reduction mechanism includes a flexspline, a rigid pulley, and a wave generator, wherein the flexspline is sleeved on the wave generator, and the rigid pulley is sleeved on the flexspline and meshes with the flexspline; the reduction ratio of the harmonic reduction mechanism is i, the maximum deformation of the wave generator is ω0, and the modulus of the flexspline is m; wherein a*i+b≤ω0 / m≤a*i+c, a∈[0.002,0.004], b∈[0.6,0.7], c∈[0.8,1], and ω0 and m are both in millimeters; when ω0<m, the flexspline and the rigid pulley mesh without backlash; and when ω0>m, the flexspline and the rigid pulley mesh without interference. According to the technical solution of the present invention, it can be ensured that under different reduction ratios, the flexspline has both good meshing quality and is not easily damaged.

The utility model relates to the technical field of engine crankshaft power transmission, in particular to a transmission assembly of an in-line piston engine, an engine and an aircraft thereof, which comprise a crankshaft body, the crankshaft body comprises a plurality of crank pins, a plurality of cranks and a plurality of journals which are sequentially arranged in a staggered manner from the front end to the tail end, a driving gear is arranged at the front end of the crankshaft body and integrally formed with the crank, the center of the driving gear and a shaft neck of the crankshaft body are arranged on the same central axis, a transmission mechanism is arranged outside the driving gear in an engaged mode, and the transmission mechanism comprises a damping gear assembly, a transmission gear, an idle gear and an output gear which are sequentially engaged. The integral layout is optimized, the structure is compact, the simple idle gear is additionally arranged, an original idle gear shaft transmission mechanism is replaced, the basic function of speed reduction of an engine is achieved, and meanwhile the purposes of miniaturization, light weight, stability and aircraft carrying performance of the engine are achieved.