47results about How to "Large reduction ratio" patented technology

The invention relates to the technical field of robot human joints, in particular to a robot joint reducer and a joint device which are high in reduction ratio, compact in design and quick in response. Comprising a shell which is independently and fixedly arranged; the planetary gear train is arranged in the shell and comprises an inner gear ring, a sun gear, a planet gear and a planet carrier, the inner gear ring is rotationally connected with the shell, the sun gear is coaxially arranged on the inner side of the inner gear ring, the planet gear is meshed with the inner gear ring and the sun gear, the planet carrier is rotationally connected with the planet gear, and the sun gear drives the planet carrier through the planet gear; the input shaft is arranged on the side, away from the planet carrier, of the sun gear, one end is coaxially and fixedly connected with the sun gear, and the other end penetrates through the shell and extends to the outside; the output shaft is arranged on the side, away from the planet wheel, of the planet carrier, one end is fixedly connected with the planet carrier, and the other end penetrates through the shell and extends to the outside; the transmission mechanism is in transmission connection with the input shaft and the inner gear ring, and the input shaft drives the inner gear ring through the transmission mechanism.

The utility model relates to the technical field of gear set speed reducers, in particular to a planetary gear set speed reducer. The planetary gear train comprises a first planetary gear set and a second planetary gear set, and the first planetary gear set comprises a first inner gear ring, a first sun gear, a first planet carrier and a plurality of first planet gears; the first inner gear ring is fixedly installed on a support, and a main shaft is rotationally arranged on the support. The first sun gear is installed on the main shaft, and the first planet carrier is installed on the main shaft. The second planetary gear set comprises a second inner gear ring, a second sun gear, a second planet carrier and a plurality of second planet gears; the second inner gear ring is rotationally mounted on the bracket; the second sun gear is fixedly installed on the main shaft, and the second planet carrier is rotationally installed on the main shaft and fixedly connected with the first planet carrier. The speed reducer has the characteristics of compact structure and large reduction ratio.

The invention provides a hollow double-code integrated joint module, which belongs to the technical field of robots and comprises a motor fixing plate, a driving plate, an input end double-rail magnetic ring code, a brushless direct current motor, a braking device, a planetary cycloidal pin wheel coupling cascade speed reducer, a middle shaft and an output end off-axis code. According to the invention, the interior is hollow, wiring is facilitated, the interior of the whole joint module is hollow, and the middle shaft is relatively static, so that cables can be arranged, the abrasion of the cables is reduced, and the stability of a system is improved. And meanwhile, the reduction ratio is high, the torque is large, the reduction ratios of the two stages of speed reducers are mutually coupled, and compared with traditional cascade speed reduction, the speed reducer can increase the reduction ratio and improve the joint torque.

This invention relates to the field of robot transmission technology, specifically an industrial robot reducer, comprising a first frame assembly and a second frame assembly, both of which can be mounted on the output end of a drive motor at their bottom. The first frame assembly has a first output shaft at its top and an internal unidirectional reduction assembly for achieving unidirectional reduction output. The second frame assembly has a second output shaft laterally located on one side of its top and an internal reversing reduction assembly for achieving vertical reversing reduction output. The unidirectional reduction assembly includes an input gear, a multi-stage unidirectional double gear, and a first output gear; the reversing reduction assembly includes a worm gear, a multi-stage reversing double gear, and a second output gear. The first frame assembly uses a base plate, middle plate, top plate, and long bolt assembly structure, and the first output shaft is prevented from detaching by a limiting plate. This invention can flexibly achieve unidirectional or vertical reduction output, has a compact structure, smooth transmission, high positioning accuracy, and strong impact resistance.

The utility model provides a novel technology capable of increasing the reduction ratio in an electric valve and a planetary gear type reduction mechanism. In n (n is a natural number of 2 or more) planetary gears (a first planetary gear (65A), a second planetary gear (65B), and a third planetary gear (65C)), a predetermined phase difference (a first phase difference (D1), a second phase difference (D2)) is formed between a first tooth (T1) and a second tooth (T2) of each planetary gear. The difference between the phase difference of one of the planetary gears adjacent in the circumferential direction and the phase difference of the other planetary gear is (1 / n) * the pitch width (P) of the second teeth (T2).

The utility model relates to the technical field of wheel-side speed reducers for high-altitude operation, in particular to a wheel-side speed reducer convenient for an electric high-altitude operation platform, which comprises a speed reducer body, a first-stage sun gear, a first-stage planet group, a second-stage planet group, a second-stage sun gear, a second-stage planet group, a third-stage planet group, a fourth-stage planet group, a fourth-stage planet group and a fourth-stage planet group, the motor is input through the first-stage sun gear, first-stage speed reduction is carried out through the first-stage planet set, second-stage speed reduction is carried out through the splines, then second-stage speed reduction is carried out through transmission to the second-stage planet set, third-stage speed reduction is carried out through transmission to the third-stage planet set, third-stage speed reduction is carried out through transmission, and finally output is carried out through the shell. By the adoption of the three-planet-set speed reduction structure, the gear, the planet carrier and the gear ring needed by first-stage speed reduction are all placed in the planet carrier needed by third-stage speed reduction, compact three-stage speed reduction is achieved, the structure is compact, space is saved when the whole aerial work platform is arranged, and therefore the working efficiency of the system is improved.

The utility model provides a combined speed reduction driving winch which comprises a three-stage transmission industrial gear box and a brake motor, and the power output end of the industrial gear box is provided with a gear shaft to serve as a sun gear; the fourth-stage speed reduction device comprises a planet carrier, a planet wheel and an inner gear ring, the planet wheel and the inner gear ring are assembled on the planet carrier, the sun wheel extends into the planet carrier to be connected with the planet wheel in a meshed mode, and the planet wheel is connected with the inner gear ring in a meshed mode; one end of the winding drum set extends and wraps the four-stage speed reduction device, and the inner gear ring is fixed to the inner wall of the driving end of the winding drum set; compared with the prior art, the large reduction ratio is still obtained by combining the small-size three-stage transmission industrial gear box and the fourth-stage reduction gear, a large-size speed reducer does not need to be adopted any more, the requirement for the small size and the large reduction ratio is met through structural optimization, and the arrangement requirement of equipment in a narrow area is met.

The invention discloses a reduction gearbox connecting structure and a floor washing robot. The reduction gearbox connecting structure comprises a transmission wheel, a planet wheel set and a connecting assembly, the planet wheel set comprises a planet carrier, an inner gear ring, a center wheel and a plurality of planet wheels, the driving motor is provided with an output shaft, the center wheel is installed on the output shaft, and the planet wheels are connected with the planet carrier and meshed with the periphery of the center wheel at intervals. The inner gear ring is meshed with the planet wheels, and the ground brush assembly is in transmission connection with the transmission wheel. The connecting assembly comprises a first connecting component and a second connecting component, and the first connecting component is connected with the transmission wheel and movably connected with the planet carrier, so that the planet carrier is connected with or separated from the transmission wheel; the second connecting component is connected with the transmission wheel and movably connected with the center wheel so that the center wheel can be connected with or separated from the transmission wheel. According to the technical scheme, the reduction gearbox connecting structure can improve the cleaning efficiency and the cleaning effect of the floor washing robot.

This invention provides a speed reduction mechanism and a motor with a speed reduction mechanism. The first gear and the second gear can be configured with an arc-shaped, uneven meshing structure that does not deteriorate the meshing state between them. Furthermore, the number of teeth on the first gear can be set to one, and the number of teeth on the second gear can be increased to easily increase the tooth difference. A helical meshing protrusion (31c) is provided on the pinion (31), and multiple meshing recesses (32d) for the meshing protrusion to mesh on the helical gear (32). These meshing protrusions and recesses are formed in an arc shape in a direction orthogonal to the axial direction of the pinion. Therefore, the pinion and helical gear can be configured with an arc-shaped, uneven meshing structure that does not deteriorate the meshing state between them, and the number of teeth on the pinion can be set to one, and the number of teeth on the helical gear can be increased to easily increase the tooth difference. Therefore, the reduction ratio can be further increased without increasing the volume of the speed reduction mechanism (30).

The invention discloses a differential cycloidal pinwheel reducer, comprising a reducer body; the reducer body is composed of an output shaft, a crankshaft bearing, a front end cover, a secondary cycloidal gear, more than one bearing roller, a cycloidal wheel bearing, a crankshaft, a housing, more than one needle wheel needle roller, a primary cycloidal gear, a driving motor and a motor housing; the output shaft is arranged as a second-stage cycloidal pinwheel, a first needle wheel needle roller groove is arranged on the outer surface, a raceway is arranged on the inner surface, a needle roller groove on the inner surface, and a raceway on the outer surface; the raceway is matched through the bearing roller, the front end cover and the outer raceway of the bearing designed on the housing to form a cross needle roller bearing; the invention is composed of two groups of cycloidal pinwheel reducers with different numbers of teeth, wherein the first-stage needle wheel is fixed, the two cycloidal gears are fixedly connected or locked for rotation, share the same crankshaft, are input by the crankshaft, and the second-stage needle wheel is output; a high-rigidity, long-life, and low-process requirement precision reduction transmission scheme is achieved.

The utility model discloses a driving mechanism and a riding device, the driving mechanism comprises a base, a motor, a worm gear, a synchronous gear and a synchronous belt, the driving mechanism has a large reduction ratio, can greatly save the structural space, has a self-locking function, and can improve the safety.

The invention relates to a fan wheel having fan blades which are mounted in a hub so as to be pivotable about the blade longitudinal axes thereof, the fan wheel having a drive flange which is connected to the hub via a limited free wheel; and a planetary gear is arranged between the driving flange and the fan blade. A sun gear of the planetary gear, which is connected to the drive flange in a rotationally fixed manner, and the drive flange are arranged on axially opposite end faces of the fan wheel.

The utility model belongs to lithium electricity cutting machine technical field, especially relates to a four -stage planetary transmission speed reducer. Including installation cylinder seat, input shaft, output shaft and sun gear no. 1, the both ends of installation cylinder seat rotatory installation have input shaft with output shaft, the sun gear no. 1 is set up on input shaft, planetary disc holder and inner toothed ring, installation cylinder seat is installed with inner toothed ring, the inner toothed ring is engaged and is stacked with four -stage transmission planetary disc holder, and first -stage planetary disc holder is engaged with transmission connection with sun gear no. 1, fourth -stage planetary disc holder is connected with output shaft. The utility model discloses through planetary transmission speed reducer can reduce the high speed of lithium electricity cutting machine's motor output to low speed, has realized multistage speed reduction and greater speed reduction ratio.

The invention discloses a dual-motor input gearbox and a ship power supply method thereof, and belongs to the technical field of marine gearboxes. The double-motor input gear box comprises a double-motor power input unit and a secondary speed reduction transmission mechanism, the secondary speed reduction transmission mechanism comprises an input shaft part, a first transmission shaft part and an output shaft part which are connected with the motor power input unit, and the input shaft part and the first transmission shaft part are meshed through a gear to achieve primary speed reduction; the first transmission shaft component and the output shaft component are meshed through a gear to achieve secondary speed reduction, and the output shaft component is used for being connected with a propeller. The hydraulic clutch control device is arranged on the input shaft component and used for controlling connection or disconnection of the single motor power input unit and the second-stage speed reduction transmission mechanism. The double-motor input gear box can adapt to power requirement changes under different working conditions of a ship, can achieve efficient conversion from the high rotating speed of the motors to the low rotating speed of the propellers, and meanwhile guarantees that the structure is simple, the size is small, the weight is light, the cost is low and reliability is high.

This invention discloses a side-mounted miniature vacuum circuit breaker, comprising a vacuum interrupter and an operating box. The vacuum interrupter is mounted at the rear of the operating box via an insulating base, and is linked to the operating mechanism inside the operating box. The operating mechanism includes an energy storage spindle, an energy storage crank arm, an energy storage spring, and an energy storage handle. The energy storage spindle is rotatably connected inside the operating box, the energy storage crank arm is mounted on the left end of the energy storage spindle, and the two ends of the energy storage spring are respectively connected to the energy storage crank arm and the operating box. The energy storage handle drives the energy storage spindle to rotate via a drive shaft, and a one-way bearing is provided between the energy storage handle and the drive shaft. This invention combines a high-efficiency energy storage method with a low-reduction-ratio, labor-saving energy storage method with a high-reduction-ratio, utilizing the advantages of both methods to balance energy storage efficiency and labor saving, thereby solving the problem of excessive torque required by existing manual energy storage terminals.

The utility model discloses a coaxial electric drive axle of big reduction ratio and vehicle, including motor, reduction mechanism and differential, reduction mechanism at least includes sun gear, planetary gear assembly, support ring gear and output ring gear, and differential includes rotator and two drive shafts, and planetary gear assembly includes planet carrier and with coaxial connection's first planetary gear and second planetary gear, and the rotor axle of motor is connected sun gear, and sun gear connects first planetary gear and / or second planetary gear, and first planetary gear and support ring gear are engaged, and second planetary gear and output ring gear are engaged, and output ring gear connects rotator, and one drive shaft of differential is arranged in the axle of rotor axle and sun gear's axle center, to guarantee the torque of motor output deceleration, increase the twist after transmission to rotator through reduction mechanism, and then guarantee the torque distribution to two drive shafts, and such can realize big reduction ratio, and the whole radial dimension is small, and cost is low and occupies small space.

The utility model relates to the technical field of airport ground equipment, in particular to a fuel chassis stable speed limiting mechanism which comprises a reduction gearbox, a gear shifting shaft, a transmission shaft connecting fork, an electro-hydraulic cylinder front fork, a pin shaft, a power unit, an electro-hydraulic cylinder, a direct gear switch and a speed reduction gear switch. The electric hydraulic cylinder is driven by the power unit to telescopically drive the gear shifting shaft to move front and back, the power unit completes position locking, the gear shifting shaft moves forwards or backwards in place, switching of a direct gear switch and a speed reduction gear switch is achieved, a direct gear switch signal or a speed reduction gear switch signal is triggered, and the switch signal is used for giving an in-place stop signal to the power unit. The electric hydraulic cylinder does not continue to act and keeps the position, a gear indication signal is displayed in the automobile, the limiting mechanism achieves the large speed reduction ratio on the basis of the original automobile speed, meanwhile, the low and stable automobile speed is achieved, and good smoothness and comfort are guaranteed in the final automobile aligning process.

A composite rhythmic slow rocking device and massage chair include a first rocking component and a second rocking component. The output ends of the first and second rocking components are respectively connected to the two ends of a platform, and the axis of the output end of the first rocking component forms a first axis, while the axis of the output end of the second rocking component forms a second axis. The first and second rocking components can be controlled independently or collaboratively to achieve various movement modes such as slow rocking, rhythmic rocking, and composite rocking, meeting users' needs for diverse relaxation experiences and solving the problem of poor experience caused by single function or complex structure in existing technologies. In addition, the design of the first and second rocking components as mutual rotation fulcrums eliminates the need for separate support mechanisms for each movement mode, simplifying the overall mechanical structure and reducing manufacturing difficulty and cost.

The invention relates to the technical field of high-viscosity fluid low-speed driving, aims to solve the problem of continuous low-speed supply of high-viscosity fluid, and discloses a high-viscosity coupling fluid coupling driving device which comprises a transmission machine cover shell assembly and a coupling fluid cylinder assembly connected with the transmission machine cover shell assembly. A power execution assembly and a transmission assembly which are in transmission connection are installed in the transmission machine cover shell assembly, the transmission assembly is provided with a propelling head, and the power execution assembly drives the propelling head to evenly extrude high-viscosity coupling fluid in the coupling fluid cylinder assembly and convey the high-viscosity coupling fluid to the surface of an ultrasonic probe. The coupling device is used for realizing coupling of the ultrasonic probe and a detected workpiece. The flow of high-viscosity coupling fluid can be adjusted, low-speed continuous and uniform supply is achieved, it is guaranteed that a thin layer of coupling fluid is formed between the ultrasonic probe and a detected workpiece, and the good coupling effect is achieved.

An infrared calibration mechanism suitable for a small-caliber reflection-type infrared space camera relates to the field of infrared space camera calibration mechanisms, solves the problem that an existing calibration mechanism of an infrared space camera cannot be applied to a small-caliber infrared space camera calibration structure, and comprises a transmission assembly, a sliding assembly and a black body, the transmission assembly comprises a motor, a motor gear, a reduction gear and a transmission support. The reduction gear is installed on a transmission support, the transmission support is adjusted, and after the reduction gear is meshed with the motor gear, the transmission support is installed on the motor support; the sliding assembly comprises a sliding frame and a double-sliding-block structure enabling the sliding frame to slide, the black body is bonded to the sliding frame, and the double-sliding-block structure is fixed to the supporting frame. The infrared calibration mechanism disclosed by the utility model is simple in structure and relatively high in reliability. And meanwhile, the possibility of arranging an infrared calibration mechanism for some small-caliber cameras with smaller volumes is also improved.

The invention discloses a mid-motor with an improved harmonic reducer, belongs to the technical field of motors, and mainly solves the problem that a harmonic reducer of an existing mid-motor is fixed in reduction ratio and cannot adapt to multiple working conditions. The motor comprises an end cover, a motor stator assembly, a motor rotor, a wave generator, a flexible gear, a rigid gear, an adjusting motor, a controller and the like, and is characterized in that the inner ring of a rigid gear ring is totally provided with 60 teeth, the number of fixed teeth and the number of telescopic teeth are equal, the fixed teeth and the telescopic teeth are alternately distributed, and the telescopic teeth are in transmission connection with a gear set through a rack bar; and the gear set is linked with an adjusting motor through a gear ring and a worm. When the adjusting motor is started, the telescopic teeth can be driven by the transmission link to stretch out and draw back in the tooth grooves, the meshing tooth number of the rigid gear and the flexible gear is changed, and therefore the reduction ratio of the harmonic reducer is flexibly adjusted. According to the invention, the motor outputs large torque during climbing and heavy load, the efficiency is improved during high-speed driving, the motor is suitable for various electric vehicles such as electric bicycles, the structure is stable, and the adaptability is high.

The present disclosure relates to an electric wheel comprising a hollow body and a motor housed at least partially inside the body, a motor carrier carrying the motor, and a transmission system transmitting the rotational motion of a rotor to the body, the transmission system having a driving element rotatably driven by the rotor of the motor carrier, and a driven element positioned on the body and comprising a set of teeth that rotates inseparably with the body, the body having a hub defining an axis of rotation of the wheel, the driving element and the driven element being engageable in meshing engagement, the set of teeth comprising axial teeth projecting from a plane perpendicular to the axis of rotation of the wheel, the motor carrier being equipped with at least one guide member, the body comprising at least one circular track coaxial with the axis of rotation of the wheel, the circular track having a contact surface perpendicular to the axis of rotation of the wheel, and the guide member or at least one guide member being capable of forming a rolling or sliding bearing contact with the contact surface.

The utility model provides a planet series harmonic composite speed reducer, and relates to the technical field of speed reducers. The crossed roller bearing is connected to one side of the steel wheel; and the harmonic speed reduction structure is connected to the crossed roller bearing, and the harmonic speed reduction structure comprises a flexible gear switching block, a flexible gear pressing plate and a flexible gear. The planetary reducer has the beneficial effects that the planetary reducer structure and the harmonic reducer structure take the cam as a common element, and the cam and the inner gear ring are ingeniously combined, so that the advantages of high bearing capacity of planetary reducer and small volume and large reduction ratio of harmonic reducer are fully played, and the efficient, compact and stable reducer effect is realized; a planet carrier in the planetary speed reduction structure is connected with a flexible gear pressing plate so that the planet carrier and the flexible gear pressing plate can work cooperatively, power is transmitted to a sun gear through an input shaft to drive a planet gear to rotate and revolve around the sun gear, and after preliminary speed reduction is achieved, power is transmitted to the harmonic speed reduction structure through a cam.

The invention relates to the technical field of engineering machinery, and discloses a swing bridge and engineering machinery. The swing axle comprises an axle body, a hub speed reducing mechanism, a driving motor assembly and a swing mechanism. The two sets of hub speed reducing mechanisms are installed at the two axial ends of the axle body correspondingly. Each hub speed reducing mechanism comprises a hub speed reducer. The driving motor assembly is installed in the axle body, the driving motor assembly comprises two driving motors, the two driving motors are arranged close to the two axial ends of the axle body respectively, and driving shafts of the driving motors are in driving connection with the adjacent hub reducers; the swing mechanism is arranged on the axle body. On the basis of the prior art, a main speed reducer is omitted, the two driving motors are arranged at the two ends of the axle body respectively, meanwhile, in order to improve the rotating speed of the motors and reduce the weight and cost of the motors, the two hub speed reducing mechanisms are adopted, a larger speed reducing ratio and larger output torque are obtained, and the axle is suitable for low-speed, heavy-load, large-torque and other special occasions.

The application belongs to the technical field of automation, and particularly relates to a kinetic energy actuator and a working method. The kinetic energy actuator comprises: a bearing, which serves as a mounting carrier; a motor, which is fixedly installed on the bearing and serves as a power source; a rotary output, which is rotatably installed on the bearing and outputs a rotary driving force externally; a speed reduction transmission group, which is connected in power between the rotary output and an output shaft of the motor, and transmits the rotary driving force of the motor to the rotary output after speed reduction and torque increase; an optical code disc, which is coaxially connected with the output shaft of the motor and rotates synchronously with the output shaft of the motor; and a photoelectric sensor, which is fixedly installed and detects the rotation of the optical code disc, and detects the rotation angle and rotation direction of the optical code disc. The kinetic energy actuator provided by the application has a compact structure, a regular shape, a large speed reduction ratio, and can simply and accurately control the rotation angle, and has wide adaptability to different application scenarios.

An electric vehicle driving source of an RV reducer type hub motor comprises a permanent magnet synchronous servo motor, the fixed end of the permanent magnet synchronous servo motor is connected with a suspension connecting piece, the power output end of the permanent magnet synchronous servo motor is connected with the power input end of an RV reducer, and the power output end of the RV reducer is connected with a tire module; the power output of the permanent magnet synchronous servo motor and the power input and output of the RV speed reducer are the same main shaft; the wheel is compositely driven by the high-speed permanent-magnet synchronous servo motor and the large-transmission-ratio RV speed reducer, the power performance of the whole vehicle can be greatly improved, the structure is simple, the size is small, the weight is light, the larger transmission ratio can be provided under the smaller size due to the application of the RV speed reducer, and the service life of the vehicle is prolonged. The high-speed permanent magnet synchronous servo motor is adopted, so that the motor has the advantages of good starting capability, strong low-speed dragging capability, high power density and the like.

The novel linkage type speed reducer comprises a speed reducing motor, a first worm is fixedly installed on an output shaft of the speed reducing motor, and a transmission shaft is fixedly installed at the end, away from the speed reducing motor, of the first worm. The worm I is in meshed connection with a worm gear I which is vertically arranged, one end of the worm gear I is fixedly provided with a connecting shaft, one end of the connecting shaft is fixedly provided with a worm II, and the worm II is in meshed connection with a worm gear II which is vertically arranged. An output position is added through the transmission shaft to achieve the effect of multi-stage linkage, series connection use of the multi-point transmission speed reducer is achieved, and the problem which cannot be achieved through a conventional speed reducer in the current market can be well solved. The speed reducer adopts the transmission shaft and can rotate along with the photovoltaic panel, and the transmission pipe can be fixed below the bracket, so that the problem of drooping of the transmission pipe is effectively solved.

The present invention discloses a redundantly driven electrostatic hydraulic actuator system, which relates to the field of hydraulic drive. The first and second servo drive motors of the system are directly connected to a planetary gear train, serving as the power input of the entire gear train. The sun gear in the planetary gear train serves as the output end of the gear train, and is further connected to the input end of a hydraulic pump. The hydraulic pump serves as the power core element of the redundantly driven electrostatic hydraulic actuator system, and its output end is directly connected to the two chambers of a hydraulic actuator, driving the hydraulic actuator to perform reciprocating linear motion (rotational motion). The planetary gear train can effectively convert the power input of the first and second servo drive motors into the forward and reverse output required by the hydraulic pump. The present invention effectively avoids the challenge of the motor crossing the zero point and the problem of the motor creeping at low speed, significantly improves the response speed and control accuracy of the electrostatic hydraulic actuator system, and improves the operating efficiency and stability.

The utility model discloses a speed reduction planet driving wheel structure which comprises a connecting frame, an output motor, a tire, a gear ring and a hub, an outer bearing is arranged in the right side end of the inner wall of the hub, the gear ring is fixed on the outer bearing, a first planet wheel set, a second planet wheel set and a third planet wheel set are connected in the gear ring, and the right side end of the first planet wheel set is arranged in a first inner bearing. The output motor fixes an output gear, the first planet gear set is connected with an intermediate gear in an engaged mode, the second planet gear set is connected with a transition gear, the transition gear is connected with the third planet gear set, the left side end of the third planet gear set is connected to the left side end of the transition gear in a sleeved mode, and the third planet gear set fixes a connecting base. A connecting seat is arranged in a connecting bearing, a power output plate is fixed on a third planet wheel set, the power output plate is fixed on a hub, a fixing bolt is arranged on the power output plate, and a positioning pin shaft is arranged on the third planet wheel set; the utility model has the advantages of simple structure, low noise, high concentricity, large transmission torque and high efficiency.

The present invention relates to a gear transmission system for a large-scale mechanical arm joint of a space station, comprising a joint housing, a joint main transmission assembly, a quick-connect male assembly, a quick-connect female assembly and an output gear transmission assembly, wherein the joint main transmission assembly and the quick-connect female assembly are mounted on the joint housing, and the quick-connect male assembly and the output gear transmission assembly are connected to form a combination body, which is supported by two pairs of bearings and mounted in the joint housing; the joint main transmission assembly comprises a dual-drive transmission assembly, a quasi-planetary gear transmission assembly and a 3K planetary gear transmission assembly, and the dual-drive transmission assembly is driven by two motor assemblies, a main motor assembly and a standby motor assembly, and when working, the main motor assembly sequentially drives the quasi-planetary gear transmission assembly and the 3K planetary gear transmission assembly to move, thereby completing motion transmission. The present invention has a compact structure, a large reduction ratio, a large output torque, a high output stiffness and a high output precision.