12results about How to "Large speed ratio" patented technology

A double-motor double-gear gearbox of a pure electric loader comprises two motors, a coupling input assembly for dynamically coupling the two motors, a gear shifting assembly with a two-gear speed changing function, an output shaft and a brake installed on the output shaft. The transmission is characterized in that the coupling input assembly, the gear shifting assembly and the output shaft are sequentially meshed from top to bottom and distributed in a parallel shaft mode, and a three-level parallel shaft structure is formed. A three-stage parallel shaft structure is formed, the axial size of the gearbox is shortened, the structural compactness of the gearbox is improved, the space requirement for arrangement of the gearbox is lowered, flexible arrangement of the gearbox and a transfer case on the loader is facilitated, the power output requirement for speed reduction and torque increase is met, and the requirement for output torque of a motor is lowered; walking driving requirements under different working conditions are met, and the weight and cost of the gearbox are reduced.

The invention relates to a high-bearing large-speed-ratio precise speed reducer which is characterized in that two end parts of a worm are rotatably supported on shell walls on two sides of the front end part of a shell, and one end of the worm is a power input end; two external thread sections with opposite rotation directions are arranged on the worm close to the two ends; the two worm gears are respectively meshed with two external thread sections on the worm; the two worm gears are coaxially and fixedly connected with one ends of the two eccentric shafts respectively; the two ends of the two eccentric shafts are rotationally supported at the two ends of the middle of the machine shell respectively. Two mounting holes in one planet wheel are respectively matched with one eccentric shaft neck in the same direction on the two eccentric shafts in a rotating and supporting manner; two mounting holes in the other planet wheel are respectively matched with the other eccentric shaft neck in the same direction on the two eccentric shafts in a rotating supporting manner; teeth on the outer rings of the two planet gears are meshed with inner teeth of the inner gear ring, and the two meshing positions are arranged at an angle of 180 degrees. The two sides of an inner hole of the inner gear ring are matched with the two ends of the middle of the machine shell in a rotating and supporting mode. The transmission is large in transmission ratio and small in size, and has a self-locking function.

The utility model relates to a bicycle drive device technical field, specifically disclose a coaxial planetary row structure bicycle power assisting mechanism, including long axle, be equipped with the casing group on long axle, be equipped with motor assembly and planetary row gear mechanism between long axle and casing group, long axle passes through casing group, motor assembly and planetary row gear mechanism, long axle and casing group, motor assembly and planetary row gear mechanism coaxial arrangement, long axle is connected with the sprocket of casing outside, planetary row gear mechanism is located between motor assembly and sprocket, planetary row gear mechanism includes retainer, a plurality of planetary wheel, sun wheel and the inner tooth ring of connecting on casing group, a plurality of planetary wheel and inner tooth ring engage, long axle is equipped with the ratchet mechanism and sensor in the retainer, and the motor shaft in motor assembly is connected through one -way bearing between sun wheel. The power assisting mechanism in scheme can improve space utilization, reduce the weight of car body, shorten axial space.

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 present invention discloses a high-precision wide-range speed generating device. The device comprises: a control unit, which comprises a position sensor, an FPGA module and a microprocessor, wherein the position sensor is communicatively connected to the FPGA module, and the FPGA module is communicatively connected to the microprocessor; an electromechanical unit, which comprises a servo motor, an electronic converter, a gear speed increasing mechanism, a low-speed output shaft and a high-speed output shaft, wherein the servo motor is electrically connected to the electronic converter, mechanically connected to the gear speed increasing mechanism, and drivingly connected to the low-speed output shaft and the high-speed output shaft; and an input-output unit. The device is based on a servo motor, a two-stage high-precision gear speed increasing mechanism and FPGA technology to achieve wide-range generation and precise control of standard speeds of 0.1 to 100,000 r / min, and can complete accurate and reliable contact or non-contact wide-range speed detection calibration of tachometers, speed measuring instruments and speed sensors.

The invention discloses a central integrated type high-torque driving unit. The central integrated type high-torque driving unit comprises two axle shells, a driving motor, a multi-stage speed reducer, a planetary speed reducer and a hub brake disc assembly. The multi-stage speed reducer is arranged between the two axle shells, and the input end of the multi-stage speed reducer is connected with the driving motor; the multi-stage speed reducer comprises a transmission gear; the planetary speed reducers are symmetrically arranged on the two sides of the multi-stage speed reducer, and the planetary speed reducers and the transmission gear are coaxially arranged. The planetary reducer comprises a central gear shaft and a planet carrier assembly. The axle housing is coaxially arranged at one end of the planetary reducer; the hub brake disc assembly is fixedly installed at the end of the axle shell through a bearing and provided with an opening communicating with the axle shell. A half shaft fixedly connected with the planet carrier assembly is fixedly mounted at the opening; and the half shaft blocks the opening. The invention relates to the technical field of vehicle drive axles, and achieves the purpose of meeting the performance requirements of large speed ratio, high torque and high rotating speed on the premise of ensuring that the space size is not interfered.

The utility model provides a lifting device of a metallurgical valve. The lifting device comprises a supporting component, a winding drum and an outer gear. The supporting component comprises a front supporting seat and a rear supporting seat. An input shaft is rotationally connected to the front supporting seat, a supporting shaft is rotationally connected to the rear supporting seat, and the rotating axis of the input shaft coincides with the rotating axis of the supporting shaft. One end of the reel is fixedly connected with the supporting shaft, and the other end is rotatably connected with the input shaft. An inner gear is arranged at the end, close to the front supporting base, of the winding drum, and the inner gear and the rotation center of the input shaft are coaxially arranged. The outer gear is eccentrically arranged on the input shaft, and the outer gear is partially meshed with the inner gear. Wherein the inner gear is more than the outer gear by one gear tooth, and when the outer gear completes one tooth swinging period, the inner gear rotates by the distance of one gear tooth. According to the utility model, the technical problems that the friction force of the transmission mode adopted in the actual use process of the existing metallurgical valve is larger and the integral manufacturing process is more complicated can be effectively solved.

The utility model discloses a height difference torque vector distribution device which comprises a differential mechanism, a left half shaft is connected to one end of the differential mechanism, and a right half shaft is connected to the other end of the differential mechanism; a motor is arranged on one side of the left half shaft, a first-stage speed reduction assembly is arranged on the motor, a third-stage speed reduction assembly is arranged on the left half shaft, and the third-stage speed reduction assembly is in transmission connection with the first-stage speed reduction assembly through a second-stage speed reduction assembly; the three-stage speed reduction assembly transmits received power to the planetary gear assembly, and a first gear ring and a second gear ring on the planetary gear assembly transmit the power to a shell and a left half shaft of the differential mechanism respectively. The beneficial effects of the utility model are mainly reflected in that the arrangement has a torque distribution function, and gives consideration to the energy consumption problem and driving experience in yaw dynamics control; and the energy consumption problem and the driving experience in yaw dynamics control are considered.

The utility model relates to a speed reducing mechanism of an electric chain hoist. The lifting device comprises a box body 11, a lifting motor 12, an output shaft 8, a guide chain wheel 9, a lifting chain 10 and a speed reduction device, the lifting chain 10 is connected with the guide chain wheel 9, the speed reduction device comprises a small gear 1 and a large gear 2 which are meshed with each other, the small gear 1 is connected with the lifting motor 12 through a connecting assembly 13, a connecting shaft 3 is arranged on the large gear 2, and the large gear 2 is connected with the lifting motor 12. An eccentric wheel 4 with a rolling bearing is arranged on the connecting shaft 3, a balance wheel 5 is arranged outside the eccentric wheel 4 with the rolling bearing, a balance wheel supporting roller pin 7 meshed with the balance wheel 5 is arranged outside the balance wheel 5, one end of the output shaft 8 is connected with the balance wheel 5, and the guide chain wheel 9 is arranged on the output shaft 8.

The utility model discloses a kind of differential through brake structure carries out differential torque, including differential housing, and left half axle and right half axle;Differential housing is provided with differential torque control component, differential torque control component at least includes shared planet carrier, shared planet carrier is provided with first planetary gear and second planetary gear, shared planet carrier is connected on the second brake of torque transfer mechanism housing;First planetary gear is engaged transmission in first sun gear and gear ring, gear ring is fixedly connected on the differential housing;First sun gear is connected to first brake;Second planetary gear is engaged transmission in second sun gear, second sun gear is fixedly arranged on the left half axle.The utility model has the beneficial effect mainly in: the device is realized differential differential torque function by differential housing and differential torque control component cooperation, need not use separate motor to control, can substantially reduce cost, facilitate reasonable layout.

The present invention relates to a large torque output cutting transmission main body, including a fixed reduction box housing and an oil cylinder, a cutting motor and a front-stage cutting transmission mechanism arranged in the fixed reduction box housing, the front-stage cutting transmission mechanism includes a first-stage planetary reduction mechanism, a central gear and left and right groups of large reduction ratio transmission mechanisms that are sequentially connected in transmission, the large reduction ratio transmission mechanism includes a first fixed-axis gear transmission mechanism, a high-speed planetary reduction mechanism and a second fixed-axis gear transmission mechanism that are sequentially connected in transmission and arranged from back to front, the cutting motor is a 4-pole or 6-pole motor, and an external spline is provided on the output shaft of the cutting motor, and the external spline forms a spline connection with the internal spline of the core of the sun gear of the first-stage planetary reduction mechanism, and the oil cylinder is located in front of the second fixed-axis gear transmission mechanism. The present invention has a large output torque, can take into account the problems of loading channel and downhole transportation, and the overall layout is conducive to the improvement of the center of gravity of the coal mining machine.

The invention relates to the technical field of transmissions, in particular to a gear adjusting device, a transmission and a gear control method.The gear adjusting device comprises a shaft sleeve, a plurality of gear shifting gears and a mandrel, and when the mandrel rotates and a sliding-in part of a pawl enters a corresponding gear driving part, a protruding part of the pawl bounces to be buckled with a corresponding inner tooth groove; when the sliding-in part of the pawl enters the outer wall of the mandrel, the protruding part is separated from the inner tooth groove. According to the gear shifting mechanism, the inner tooth groove structure of the gear shifting gear is matched with the pawl structure, in the gear shifting process, the pawl structure of the previous gear can be pried away from the corresponding inner tooth groove of the gear shifting gear through the edge of the gear driving part of the central spindle, and the effect that the pawl structure is not stopped when a load is shifted up and down is achieved. The speed reducer has the advantages of quick gear shifting response, high transmission efficiency, wide speed ratio, load shifting up, light load shifting down and the like.