447 results about "Epicyclic gearing" patented technology

This invention relates to planetary damping spring dampers for gearboxes. Specifically, a planetary gear arrangement includes planetary gears rotatable on planetary bearings mounted to a bracket of the planetary gear arrangement via support pins. A damping spring is disposed between the outer surface of the outer ring of the bearing and the opposing inner surface of the planetary gear, and includes an annular gap. A spring diaphragm damper is disposed between the cylindrical outer surface of the support pin and the opposing inner surface of the inner ring of the planetary bearing, and also includes an annular gap. The support pin (96) and / or the outer ring includes an oil supply hole leading to the corresponding annular gap. Gas turbine engines include planetary gear arrangements having such planetary bearings.

This utility model relates to the technical field of planetary gear positioning equipment, specifically a high-precision positioning milling device for planetary gears. It includes a worktable and a positioning mechanism disposed inside the worktable. The positioning mechanism is used for the placement and positioning of the planetary gears. The positioning mechanism includes two connecting rods rotatably connected to the inner side of the worktable, a drive rod rotatably connected to one end of the two connecting rods, and a lifting rod slidably connected to the drive rod. The lifting rod is used for swing control of the drive rod. Each of the two connecting rods has an arc-shaped clamping plate rotatably disposed at one end for clamping the outer side of the gear. Each of the two drive rods has an arc-shaped top plate disposed on its inner side for tensioning the inner side of the gear. The connecting rods move outward together with the drive rods, allowing the two connecting rods to use the arc-shaped top plates at one end for expansion-type positioning of the inner side of the gear. The combined use of the arc-shaped top plate and the arc-shaped clamping plate improves the positioning effect of the positioning mechanism.

Hybrid turbomachine comprising: an input shaft (a26) configured to be driven by a low-pressure turbine (102); an output shaft (a64) to drive an electric machine (104) and another output shaft (a64') to drive another electric machine (104'); a speed variator (106) to adjust the speed of each output shaft (a64, a64') according to a speed of the input shaft, comprising: a first planetary gear train (T1) having, at the input, a planet carrier (108) connected to the input shaft, a ring gear (112) and a planet (110); at the output, a first sun gear (130) connected to said output shaft, a second planetary gear train (T2) having, at the input, the ring gear (112) and another planet (120); At the output, a second sun (140) is connected to the other output shaft, and a means (MB) is provided for locking or freeing the crown. Figure for the abbreviation: Fig. 1

This invention provides a transmission and a vehicle. The transmission includes a drive shaft (10), a transmission mechanism (20), and a shifting mechanism (30). The drive shaft (10) drives the transmission mechanism (20) to rotate. The transmission mechanism (20) includes a planetary gear assembly (21) mounted on the drive shaft (10) and a plurality of gear rings (22) mounted on the outside of the planetary gear assembly (21). The gear rings (22) have engagement grooves (23) on their outer sides. The shifting mechanism (30) includes a shift sleeve (31) and a pawl (32). When the shift sleeve (31) is rotated to the shift position, it drives the pawl (32) to engage in the engagement grooves (23) of one or more gear rings (22) to restrict the rotation of the corresponding gear ring (22), thereby changing the transmission path of the transmission mechanism (20). The transmission provided by this invention can reduce the space occupied by the shifting mechanism, thereby reducing the size of the transmission.

The invention relates to a torque transmission system (1) for an electric or hybrid vehicle, comprising a propulsion unit (10) and a torque adaptation module (100), the torque adaptation module (100) comprising a planetary gear device (110) and a second electric machine (120) comprising a rotor shaft (121) rotationally coupled with a planet carrier (113) of the planetary gear device. Figure to be published: 1

The utility model discloses an integrated joint module and robot relates to motor technical field, and the integrated joint module includes: casing, motor, planetary gear reduction box, encoder and drive control board, the casing is the tubular structure, the motor is used to provide power, and the motor includes stator, rotor and rotation axis, and the stator is hoisted in the top inside casing, and the rotor rotatably sets up inside casing, and is located stator outside, and rotation axis is connected with the rotor, and its outer periphery is provided with the tooth, the planetary gear reduction box sets up in stator inside, and including fixedly installed inside stator's inner tooth ring, the planetary wheel that engages in the inner tooth ring with rotation axis between and the planetary wheel connection's planet carrier, the encoder includes the first encoder for monitoring rotation axis and the second encoder for monitoring planet carrier, and drive control board is located in casing, and is connected with motor. Such setting, can reduce the size of joint structure, realizes double magnetic encoder output configuration simultaneously, improves its output accuracy.

This application discloses a speed control mechanism for the header of a corn harvester, comprising a power input unit, a continuously variable transmission unit, and a header drive unit connected in sequence. Two symmetrically arranged continuously variable transmission units each include a transmission box, a planetary gear assembly inside the box, and a hydraulic motor outside the box. The planetary gear assembly consists of a sun gear input shaft, a continuously variable output shaft, a sun gear, planet gears, a planet carrier, and an external gear ring. The hydraulic motor drives the external gear ring through a gear pair. By changing its speed and direction, the speed ratio of the planetary gears is continuously adjusted, thereby achieving stepless and smooth control of the output shaft speed. Power is transmitted to the ear-picking boxes and auger on both sides of the header via the header drive unit. This mechanism integrates planetary transmission and hydraulic motor speed control into a compact structure, provides smooth transmission, allows for stepless online adjustment of the header speed to adapt to working conditions, improves work quality and efficiency, and has overload protection.

The application discloses a dynamic reliability evaluation method for a permanent magnet planetary gear transmission system, and belongs to the technical field of reliability analysis of electromechanical coupling transmission systems. The method is characterized in that: firstly, the service process of the system is divided into stages, and a random variable model is established; based on the wear evolution relationship, parameters of each stage are obtained through parameter mapping; then, stage high-fidelity unified electromechanical dynamics solving is performed, and frequency-related characteristic indexes are extracted; a multi-failure mode limit state vector is constructed, and a stage failure event is defined; on this basis, a multi-response Gaussian process proxy model is used for fitting and iterative updating of the limit state function through stage-by-stage active learning; the U function is used for initial screening of candidate samples, EFF is calculated and sorted, and a new sample point is selected according to the Top-K criterion to update the proxy model, until the convergence criterion is met; finally, the dynamic failure probability of the system is calculated by using the updated proxy model. The application realizes efficient and accurate evaluation of the failure probability of multiple failure modes, reduces the calculation cost, and improves the engineering applicability.

An electric drive module (EDM) for an electrified vehicle includes an electric motor and a two-speed gearbox including: a housing; a first planetary gearset (PG) having a first sun gear coupled to the electric motor; a second compound PG having a second sun gear coupled to the first PG; a third PG having a third sun gear coupled to the second PG and a third planetary carrier coupled to an output of the gearbox. A first torque transfer device (TTD) selectively couples a second ring gear of the second PG to the housing; and a second TTD selectively couples a first ring gear of the first PG to the housing. The gearbox is selectively switchable among (i) a first gear where the first TTD is engaged and the second TTD is disengaged; and (ii) a second gear where the second TTD is engaged and the first TTD is disengaged.

The utility model discloses an electric capstan with quick return self -stop function, including main body support, the left and right sides of main body support are equipped with motor assembly and speed reducer component respectively, be equipped with the transmission shaft of both's connection between motor assembly and speed reducer component, still be equipped with the drum of rotary connection with it on main body support, drum and speed reducer component engagement rotation, speed reducer component includes speed reducer casing, planetary gear assembly and internal toothed ring, and speed reducer casing is equipped with the clutching component of rotary connection with it, and internal toothed ring moves axially when clutching component rotates relative planetary gear assembly, speed reducer component still includes primary sun gear axle, and primary sun gear axle connects transmission shaft, and still be equipped with brake assembly in speed reducer component, the utility model discloses setting brake assembly in speed reducer component, and the braking process is smooth and good braking effect, and drum can brake fast and wear less when rotating, and through clutching component simultaneously, can conveniently switch the working gear position of speed reducer component.

A direct-drive rotary roll drive structure is disclosed, comprising a planetary gear reducer fixed to the rear side of a housing, connected to a servo motor, and the output shaft of the planetary gear reducer connected to the rear end of a main shaft located inside the housing. The main shaft is mounted on the center holes on the front and rear sides of the housing via first and second rolling bearings, and a chuck mechanism is connected to the front end of the main shaft. This direct-drive rotary roll drive structure applies the precise rotation control of a servo motor to the rotary processing of rolls, resulting in a simple mechanical structure and high precision.

An electric drive system for a motor vehicle includes an electric motor and a planetary transmission stage. A rotor shaft is non-rotatably connected to a sun gear. A planet carrier has a carrier shaft arranged coaxially and axially adjacent to the rotor shaft. The carrier shaft is mounted relative to a housing by a first bearing. The housing has a circular opening through which the carrier shaft is guided. The housing has a first oil duct opening into the circular opening and the carrier shaft has a rotary feedthrough in the axial region of the opening relative to its axis of rotation. The carrier shaft has at least one first bore extending in the axial direction, which is connected at its one end to the rotary feedthrough. The rotor shaft has an axially extending second bore. The first bore is connected to the second bore.

This invention provides a planetary gear reducer, belonging to the technical field of reducer technology. It solves the problem of unstable torque in existing technologies. This invention includes a front housing, a gear ring body, a rear housing, a planetary gear assembly, an input shaft, and an output splined shaft. The front housing, gear ring body, and rear housing are connected sequentially, and the planetary gear assembly is installed inside the front housing, gear ring body, and rear housing. The planetary gear assembly includes planetary gears, a sun gear, and a planet carrier. The planet carrier is a hollow annular sleeve with a mounting hole in the center and a connecting ring formed on the rear side. The planetary gears are fitted onto the planetary shafts and located in the mounting hole, meshing with the inner side of the gear ring body. The sun gear is located inside the planet carrier and meshes with the planetary gears. A keyway groove is formed on the inner side of the connecting ring groove on the rear side of the planet carrier, and the output splined shaft is connected to the rear side of the planet carrier through the keyway groove. This invention has the advantages of stable torque transmission and high precision.

An oil collector for a mechanical reduction gear of a turbomachine includes a body having two opposing side surfaces each configured to extend partly around a planet of said reduction gear, and an internal cavity for oil circulation. The collector also has at least one tongue removably mounted on the body, the tongue extending from the body in the extension of at least one side surface and intended to be at least partially engaged in an annular groove of a sun gear of the reduction gear.

This invention discloses a three-speed gear mechanism and its hub motor, including a motor shaft, an electric shifting mechanism, a three-planetary gear transmission assembly, and power input and output mechanisms. The power input mechanism includes an input sleeve and an input clutch mounted on the motor shaft. The three-planetary gear transmission assembly includes a rotating planetary carrier and multiple planetary gears on it, each including first, second, and third planetary gears with progressively increasing outer diameters. It also includes first, second, and third sun gears mounted on the motor shaft and meshing with them respectively. The first sun gear is connected to the input sleeve via the input clutch. The locking mechanism of the electric shifting mechanism has two positions for locking the second and third sun gears respectively. The power output mechanism includes an output clutch and an output housing. The input sleeve is connected to the rotating planetary carrier via the output clutch, and the rotating planetary carrier is fixed to the output housing. Compared with conventional technology, this invention has a more compact structure, smaller radial dimensions, and a larger speed ratio.

The application discloses a valve cover grinding tool, which is characterized by comprising a valve cover planet gear disc and a valve cover pad; the outer side of the valve cover planet gear disc is provided with engagement teeth, which are used for cooperating with a sun gear and an inner tooth ring to form a planetary gear mechanism; an end surface of the valve cover planet gear disc is provided with a valve cover loading hole; a plurality of valve cover loading holes are uniformly and interval arranged along the circumferential direction of the valve cover planet gear disc, and each valve cover loading hole is used for loading a pair of valve covers and the valve cover pad vertically and filling, and the valve cover pad is used for being arranged between the pair of valve covers in each valve cover loading hole, so that the sliding contact plane of the pair of valve covers can be extended from the valve cover loading hole and can be ground by a grinding disc.

The application provides a gear transmission structure and an anti-impact gear reducer. The gear transmission structure comprises a driving assembly and a driven assembly. The driving assembly has at least two groups of driving teeth groups arranged at intervals in the axial direction, and there is a misalignment angle alpha between two opposite teeth of any two adjacent driving tooth groups. The driven assembly has a planetary gear, and the planetary gear has at least two groups of driven tooth groups meshing with the driving tooth groups. One of any two adjacent groups of driven tooth groups meshes with the left tooth surface of the teeth of the corresponding driving tooth group, and the other group meshes with the right tooth surface of the teeth of the corresponding driving tooth group. The application solves the problem that the meshing gap and transmission impact of the reducer in the prior art are difficult to eliminate.

This invention discloses a self-circulating wind turbine system, belonging to the field of wind power generation technology. It includes: an air inlet duct module connecting a natural wind source to an air inlet gearbox, with a dust filter at the air inlet; and an air inlet gearbox module employing a continuously variable transmission (CVT) with a planetary gear set structure. The meshing state of the sun gear and planetary carrier is dynamically adjusted via an electromagnetic clutch. This invention generates a self-circulating airflow through a built-in wind turbine, combined with a dual-path variable-speed power generation design, eliminating the dependence of traditional wind power generation on the stability of natural wind. In remote scenarios without an external power grid or in emergency power supply needs, the flowing air within the air inlet and outlet ducts can be used to convert power into electricity via the air inlet and outlet gearboxes, respectively, achieving a dual function of "self-sustaining + external power supply," greatly improving the stability and autonomy of power supply.

A power transmission device (10) for a work vehicle (100) includes a transmission (11) including an input shaft (20) rotationally driven by a prime mover (103), a continuously variable transmission (30), a planetary gear mechanism (40), and a plurality of transmission gears (50). The first planetary gear mechanism (41) includes a first ring gear (41R), a first sun gear (41S), and a first planetary gear (41P). The second planetary gear mechanism (42) includes a second ring gear (42R), a second sun gear (42S), and a second planetary gear (42P). The first planetary gear (41P) further includes a third planetary gear (43P) that meshes with the second planetary gear (42P). An outer diameter dimension (RS1) of the first sun gear (41S) is larger than an outer diameter dimension (RS2) of the second sun gear (42S), and an inner diameter dimension (RR2) of the second ring gear (42R) is larger than an inner diameter dimension (RR1) of the first ring gear (41R).

This invention provides a spinning reel that appropriately solves the problems of conventional spinning reels. The spinning reel (1) includes a spool (15), a spool (7), a planetary gear (17), an oscillation mechanism (21), and intermediate gears (31, 33). The planetary gear (17) is rotatably supported on the reel body (3). The oscillation mechanism (21) reciprocates the spool (15) in the front-rear direction. The intermediate gears (31, 33) are disposed between the planetary gear (17) and the oscillation mechanism (21). The intermediate gears (31, 33) reduce the rotational speed of the planetary gear (17) and transmit this speed to the oscillation mechanism (21). The stroke (S) of the spool (15) divided by the winding pitch (P) of the fishing line and the module (M) of the intermediate gears (31, 33) is (60) or more.

The utility model provides a kind of planetary reducer belongs to speed reducer technical field.It solves the problem of insufficient stability of internal connection in prior art.The utility model's speed reducer shell side is equipped with shell end cover and speed reducer shell is installed in and input shaft and planetary assembly outside, fixed hole and connecting hole are opened in planet carrier, fixed bolt is fixed in fixed hole, planetary axle is connected in double-stage planetary gear inside and is installed in planet carrier inside by passing through connecting hole, first fastening hole is opened in one end of planetary axle, second fastening hole is opened in the place close to end portion of planet carrier, first fastening pin is installed in first fastening hole and second fastening hole, first inner gear ring and second inner gear ring are respectively engaged with the outside of the two sides of double-stage planetary gear connection.The utility model has the advantages of stable connection structure, high transmission precision and efficiency.

The present application relates to the technical field of planetary gear set, and particularly relates to a flexible meshing method and device of planetary gear set and gear ring. The flexible meshing device comprises a clamping device, a force sensing device and a displacement moving device, and a control device is connected with the force sensing device and the displacement moving device respectively, and the control device is used for controlling the displacement moving device to execute the flexible meshing method according to the force and torque detected by the force sensing device. In the flexible meshing method of the planetary gear set and the gear ring, a six-dimensional follow-up coordinate system is established, and the axial pressure, torque and force difference are combined for closed-loop control in the processes of centering, axial approach, rotation tooth searching, attitude adjustment and tooth meshing, so that the planetary gear set and the gear ring no longer rely on manual tooth adjustment or rigid press fitting, but automatically search for the tooth groove and adjust the attitude in the safe pressure range, thereby reducing the risk of knocking and scratching caused by tooth top and tooth surface interference, and improving the automation degree, assembly success rate and assembly consistency of the meshing assembly.

The application discloses a limited slip differential. The limited slip differential comprises a housing capable of rotating around a main axis, a first half axle gear and a second half axle gear both rotatably installed on the housing and both having an axis coinciding with the main axis, and a planetary gear arranged between the first half axle gear and the second half axle gear and engaging with both. The housing is provided with a mounting cavity for mounting the planetary gear, and the mounting cavity has a support part. The planetary gear has a planetary gear shaft, a side surface of the planetary gear shaft being rotatably supported on the support part, and an axis of the planetary gear being perpendicular to the main axis. The planetary gear is configured so that a ratio of a force arm l of an acting force F of any one of the first half axle gear and the second half axle gear on the planetary gear to a fitting radius r between the side surface and the support part is less than or equal to a self-locking threshold. The limited slip differential realizes limited slip by using a self-locking principle of a rotating pair.

The utility model relates to the technical field of livestock breeding, especially to a multi-angle livestock breeding feed spreader, which comprises a material cylinder, which is arranged above the base; a stirring disc, which is rotatably installed on the base and located at the bottom end of the material cylinder; a stirring plate, which is arranged on the stirring disc; a gear ring, which is arranged on the bottom end surface of the stirring disc; a motor, the output end of which is provided with a driving gear at one end outside the base, the driving gear is engaged with the gear ring, and is used for driving the gear ring to rotate; and a planetary gear, which is installed on the base and located in the gear ring, the gear ring drives the sun gear to rotate through the planetary gear while rotating. The utility model realizes the cooperative operation of the stirring disc and the auger through planetary gear transmission, uniformly and efficiently spreads the feed at multiple angles, meets different breeding requirements, and improves the breeding efficiency and quality.

This utility model relates to the field of planetary gear transmission technology and discloses a built-in tensioning and positioning wheel shaft structure for planetary gear transmission. This structure includes a planetary carrier and a positioning wheel shaft assembly. Planetary gear bearings are mounted on the planetary carrier, and planetary gears are mounted on the planetary gear bearings. The positioning wheel shaft assembly passes through the planetary carrier, the planetary gear bearings, and the planetary gears, connecting them together to form the built-in tensioning and positioning wheel shaft structure. The positioning wheel shaft assembly includes a positioning wheel shaft, on which are provided expansion sleeve one and expansion sleeve two. Expansion sleeve one has an expansion oil chamber one, and expansion sleeve two has an expansion oil chamber two. The positioning wheel shaft assembly also includes a compression oil chamber and oil passages one and two. This utility model can achieve the function of not damaging the mating surfaces of parts during assembly and disassembly, while ensuring the load-bearing capacity and accurate positioning of the wheel shaft in use.

To facilitate the phase alignment of planetary gears. [Solution] A method for manufacturing a planetary gear reducer 10, comprising a planetary gear 20 that meshes with a sun gear 40 and is arranged around the sun gear 40, a carrier 30 that rotatably supports the planetary gear 20, and a first internal gear 50 that meshes with the planetary gear 20 from the outside of the planetary gear 20, wherein the assembly of the planetary gear reducer 10 is performed using a phase alignment pin 90 and a phase alignment jig 80, comprising the steps of: aligning the phase of the planetary gear 20 with the carrier 30 by inserting the phase alignment pin 90, which is passed through a pin hole 85 of the phase alignment jig 80, into a pin insertion hole 25 formed in the end face 24 of the planetary gear 20; meshing the first internal gear 50 with the planetary gear 20 while inserting a projection 86 of the phase alignment jig 80 into a guide groove 53 of the first internal gear 50; and meshing the sun gear 40 with the planetary gear 20 that meshes with the first internal gear 50.

This utility model discloses a lightweight reducer, including a module housing, a first planetary carrier, and a second planetary carrier. The second planetary carrier is disposed in an opening at one end of the module housing, and an internal gear ring is provided at one end of the second planetary carrier. The first planetary carrier is disposed inside the internal gear ring, and multiple first planetary gears meshing with the internal gear ring are movably mounted on the first planetary carrier. Multiple second planetary gears meshing with the internal gear ring are movably mounted on the second planetary carrier. A motor gear shaft meshing with the second planetary gears is installed at the center of the first planetary carrier. This utility model has a simple structure. By using an internal gear ring, all the first planetary gears, second planetary gears, and bearings are tightly assembled together, increasing utilization and reducing space. Furthermore, by setting a first weight-reducing groove, a second weight-reducing groove, and a third weight-reducing groove, its weight is reduced, achieving the purpose of lightweighting. Moreover, the transmission ratio enables the transmission of high torque through a high reduction ratio.

The utility model discloses a kind of planetary gear mechanism and gear box, including shell, and the first planetary transmission, the second planetary transmission and the third planetary transmission installed in shell, the first planetary transmission includes first planetary carrier, and three groups of first planetary gears, the second planetary transmission includes second planetary carrier, and five groups of second planetary gears, the third planetary transmission includes third planetary carrier, and three groups of third planetary gears;The middle part of first planetary gear, second planetary gear and third planetary gear is vertically provided with shaft hole, and multiple oil storage grooves are vertically provided with on the outer side of shaft hole. By being provided with multiple oil storage grooves on the outer side of the shaft hole of each planetary gear, the oil storage groove is used to store lubricant, and the lubricant in contact with gear shaft is supplemented to gear shaft during the operation of gear box, lubrication to the rotation of planetary gear is played, the friction between planetary gear and gear shaft is reduced, to improve the service life of planetary gear box.