Showing papers on "Reducer published in 2010"

In-wheel motor drive device

Abstract: An object of the invention is to always maintain an outer pin holder and a housing in a speed reducer section at their predetermined positions, to prevent damage to such components as revolving members, outer circumferential engagers, and motion conversion mechanism upon a large axial load due to turning or sudden acceleration/deceleration, etc., and to eliminate rattling noise caused by the housing and the outer pin holder. A casing immobilizing member which is fixed to an inner surface of a speed reducer section casing and a housing immobilizing member which is fixed to an outer surface of a speed reducer section housing are provided between the speed reducer section casing and the speed reducer section housing. The casing immobilizing member and the housing immobilizing member are bonded with each other via a rubber member.

Syngas chemical looping gasification process: Bench‐scale studies and reactor simulations

Abstract: The syngas chemical looping process co-produces hydrogen and electricity from syngas through the cyclic reduction and regeneration of an iron oxide based oxygen carrier. In this article, the reducer, which reduces the oxygen carrier with syngas, is investigated through thermodynamic analysis, experiments, and ASPEN Plus® simulation. The thermodynamic analysis indicates that the countercurrent moving-bed reducer offers better gas and solids conversions when compared to the fluidized-bed reducer. The reducer is continuously operated for 15 h in a bench scale moving-bed reactor. A syngas conversion in excess of 99.5% and an oxygen carrier conversion of nearly 50% are obtained. An ASPEN Plus® model is developed which simulates the reducer performance. The results of simulation are consistent with those obtained from both the thermodynamic analysis and experiments. Both the experiments and simulation indicate that the proposed SCL reducer concept is feasible. © 2009 American Institute of Chemical Engineers AIChE J, 2010

Noise reducer for rotor blade in wind turbine

Abstract: A noise reducer for a rotor blade of a wind turbine and a rotor blade assembly are disclosed. The rotor blade assembly includes a rotor blade having exterior surfaces defining a pressure side, a suction side, a leading edge and a trailing edge each extending between a tip and a root. The rotor blade further defines a span and a chord. The rotor blade assembly further includes a noise reducer configured on the rotor blade. The noise reducer includes a plurality of rods each having a body extending between a first end and a second end. The body of each of the plurality of rods contacts and extends parallel to the body of a neighboring rod of the plurality of rods when the noise reducer is in a stable position.

Pipe scale removal robot

Abstract: The utility model relates to a pipe scale removal robot, which utilizes high-pressure water jet to remove scale and consists of two traveling trolleys, a reciprocating rotary spray gun, a camera and aposition sensor. Each traveling trolley comprises traveling wheels, a motor, a speed reducer, a trolley body and a radial regulating device, the two traveling trolleys are connected via a ball hinge,wherein the traveling wheels includes driving wheels and follower wheels, the motor, the speed reducer and the driving wheels are connected, and the radial regulating device realizes self-adaptive regulation of radial sizes and reducing when turning. The reciprocating rotary spray gun which consists of a motor, a speed reducer, an incomplete (semi-circular) gear transmission mechanism and spray nozzles can realize reciprocating rotation of 180 degrees and resolves sealing difficulty of the existing forced rotary spray gun. The camera is used for observing scaling and scale cleaning degree ofpipes. The position sensor is used for recoding position of the robot in pipes. The pipe scale removal robot is simple in structure and high in practicability and used for removing scale of dust conveying pipes of coal-fired power plants, gas pipes and natural gas pipes or other water delivery pipes.

Noise reducer for rotor blade in wind turbine

Abstract: A rotor blade assembly for a wind turbine is disclosed. The rotor blade assembly includes a rotor blade having surfaces defining a pressure side, a suction side, a leading edge, and a trailing edge extending between a tip and a root. The rotor blade assembly further includes a mounting plate and a noise reducer. The mounting plate is configured on a surface of the rotor blade. The noise reducer may include a base plate and a plurality of noise reduction features. The base plate is mounted to the mounting plate. The plurality of noise reduction features extend from the base plate.

Reducer of electric power steering apparatus

Abstract: A reducer of an electric power steering apparatus is disclosed. It reduces rattle noise generated by a backlash due to friction and wear of a worm and a worm wheel or an impact transmitted from a road surface through a wheel and a steering shaft and enhances a steering feeling of a driver by improving the catching phenomenon and rotational resistance generated between a worm shaft and a worm shaft bearing.

Micro-backflash cycloidal speed reducer of industrial robot

Abstract: The invention relates to the technical field of a precise speed reducer, in particular to a micro-backflash cycloidal speed reducer of an industrial robot. The speed reducer is characterized in that:(1) an internal hole of an eccentric sleeve is levorotation multi-headed internal thread that is connected with levorotation multi-headed external thread on an input shaft; the input shaft is sequentially provided with a retaining ring, a disc-shaped spring, a cycloidal gear, a spacing ring, a cycloidal gear, a disc-shaped spring and a retaining ring; the phase angle of two eccentric sleeves is staggered by 180-Delta Psi degrees; the deflection angle Delta Psi leads the teeth of the cycloidal gear to closely lean against the counter-clockwise side of the upper half area of a needle tooth pin and the teeth of the other cycloidal gear to closely lean against the clockwise side of the lower half area of the needle tooth pin; (2) the needle tooth pin is contacted with a needle tooth shell in asemi-embedded way; the needle tooth pin hole on the needle tooth shell is obtained by cutting a continuous and smooth curve through linear cutting. The speed reducer has the beneficial effects that:(1) the manufacturing cost is lower than that of RV by 80-90%; (2) the mechanical manufacturing process is simple and the high-precision machining tool is not needed; and (3) the maintenance is convenient.

The Development of gearless reducers with rolling balls

Abstract: To satisfy the various demands such as no-backlash characteristic and so on, we have newly developed three types of no-backlash reducers: the cycloid ball reducer, the precession ball reducer and the reciprocating motion input type ball reducer. Especially, these reducers are developed for the robot joints. Also, these reducers are a kind of the constant velocity cam mechanisms with rolling balls; their inputs use eccentric motion, precession motion and reciprocating motion. The motion principle and the profile calculation method of each reducer are proposed, using the vector analysis.

Eddy-current reduction gear

Abstract: Since a speed reducer includes: a brake disk that is fixed to a rotation shaft of a vehicle; permanent magnets that are disposed not only oppositely relative to a principal surface of the brake disk but also circumferentially in such a manner that each magnet is magnetized in reverse polarity to adjacent ones; a rotational member that retains the permanent magnets, has a switch brake disk, and is rotatably supported by the rotation shaft; a switch brake caliper that has brake pads sandwiching the switch brake disk therebetween, and is fixed to an irrotational portion of the vehicle; and an electric linear actuator that causes the brake pads to be linearly driven by converting rotational motion of the electric motor into linear motion, the speed reducer can realize a reduction in size, and thus can be installed even in a small- to mid-size vehicle not especially equipped with a compressed air tank or the like.

Automated optimal design of a two-stage helical gear reducer

Abstract: The design space of multi-stage transmissions is usually very large and heavily constrained. This places significant demands on the algorithm employed to search it, but successful optimization has the potential to yield considerably better designs than conventional heuristics, at the same time enabling a better understanding of the trade-offs between various objectives (such as service life and overall weight). Here we tackle a two-stage helical gear transmission design problem (complete with the sizing and selection of shafts, bearings, housing, etc.) using a two-phase evolutionary algorithm in a formulation that can be extended to include additional stages or different layouts.

Servo reducer performance parameter testing device

Abstract: The invention relates to a servo reducer performance parameter testing device, which belongs to the technical field of mechatronics and relates to gear transmission measurement technology. The device comprises a mechanical part and a control part. The mechanical part comprises an alternating current servo motor, a servo reducer, a magnetic powder clutch, an angular displacement amplifier, a tested servo reducer loading station, a moment sensor and a magnetic powder brake, wherein all parts are connected by couplers. The control part comprises a magnetic powder brake controller, a moment sensor regulation circuit, a data acquisition card, an angular displacement sensor, a magnetic powder clutch controller, an industrial control computer and a motion control card. The device can test multiple performance parameters (such as moment rigidity, empty accuracy, transmission accuracy and breaking moment) of the servo reducer and is applicable to tested servo reducers of different specifications and models. The entire device has a simple structure and is convenient to use, easy to operate and high in test accuracy and efficiency.

Controlling configurable variable data reduction

Abstract: Example apparatus, methods, and computers control configurable, variable data reduction. One example method includes identifying data reduction controlling attributes in an object to be data reduced by a configurable variable data reducer. The attributes provide information upon which decisions concerning whether and/or how to data reduce the object can be based. The example method also includes controlling a configurable variable data reducer to selectively data reduce the object based, at least in part, on the data reduction controlling attributes. The control exercised can determine whether, where, when, and/or how data reduction will proceed.

Variable-frequency speed-regulating control system of crane

Abstract: The invention relates to an automatic control system, in particular to a variable-frequency speed-regulating control system of a crane The invention discloses a variable-frequency speed-regulating control system of a crane, which solves the problem that in the prior art, the speed-regulating modes are step speed regulation respectively so as to cause huge impact on the mechanical structure and have low safety The key point of the technical scheme is characterized in that the variable-frequency speed-regulating control system of the crane comprises a linkage operating control platform, a transducer, a safety protection device, a variable-frequency motor, a motor detect device, a reducer, a winding drum and a brake, wherein the linkage operating control platform provides linkage operatingcontrol instructions; the motor detect device, the variable-frequency motor, the safety protection device and the brake are all connected with the transducer; the variable-frequency motor is connectedwith the motor detect device, the brake and the winding drum; the brake is connected with the winding drum; and the reducer is connected with the variable-frequency motor and the winding drum The variable-frequency speed-regulating control system has the beneficial effects of having wide speed regulation range, high positioning accuracy and good safety, reducing the mechanical transmission impact, prolonging the service life of the crane, and being especially applicable for column cranes

Five-degree-of-freedom artificial hand mechanism

Abstract: The invention provides a five-degree-of-freedom artificial hand mechanism, relates to an artificial hand mechanism and aims to solve the problems that the conventional artificial hand has single degree of freedom and cannot realize independent movement of each finger Five drivers, five reducers and a palm circuit board are all integrated in a cavity of a palm; a thumb driver and a thumb reducer are arranged along a width direction of the palm, the four drivers except the thumb driver and the four reducers except the thumb reducer are arranged along a length direction of the palm, and a wrist and the palm are rotatably connected relatively; each driver is in transmission connection with the corresponding reducer, and the reducer is in transmission connection with a corresponding transmission mechanism; and a rotating part of each potentiometer is connected with the corresponding transmission mechanism, and the transmission mechanism is supported on a corresponding substrate The five-degree-of-freedom artificial hand mechanism has five degree-of-freedom, and improves the flexibility of the artificial hand; and due to the simple and reliable transmission, relative motion of each finger is realized, and adaptive grasping of objects of different shapes and sizes is also realized

Thin oil lubricating system for large-sized speed reducer

Abstract: The utility model provides a thin oil lubricating system for a large-sized speed reducer, comprising a lubricating main system, a pressure regulating system and a temperature regulating system, wherein the lubricating main system comprises an oil tank which is connected with a main pump, a coupling and a variable-frequency motor in sequence; the main pump is connected with a speed reducer by a pipeline; a connecting pipeline between the main pump and the speed reducer is provided with a pressure gauge, a pressure sensor, a pipeline heater, a tubular cooler, a temperature sensor and a filter in sequence; a pipeline at a cooling water outlet of the tubular cooler is connected with a cooling-water control water valve; and a connecting pipeline between the filter and the speed reducer is provided with a bypass valve which is directly communicated with the oil tank. The thin oil lubricating system has the effects that by adopting the automatic control that the system leads the output pressure of lubricating oil and the rotating speed of the motor to form a closed loop, the thin oil lubricating system leads the pressure generated by the main pump to be stable, thus leading the lubricating oil output by the main pump to be provided with constant flow, and leading the utilization rate of the lubricating oil to be improved to 100%, namely all the lubricating oil output by the lubricating main pump takes part in the lubrication of the large-sized speed reducer, thus greatly improving the utilization rate of the lubricating oil.

Production process for tail gas catalytic reducer

Abstract: The invention relates to a production process for a tail gas catalytic reducer, in particular a production process for a tail gas catalytic reducer of vehicles, and belongs to the technical field of chemical engineering. In the production process, the continuous filtration and ion exchange technology is adopted; attributes of different impurities of the traditional urea are utilized; through continuous purification and exchange adsorption of metallic and nonmetallic ions, the common urea is subjected to vehicle-grade purification, so that the common urea is prepared into the high-purificationtail gas catalytic reducer through trough-type continuous purification and ion exchange process to ensure normal work of an SCR system. Compared with the traditional crystallization process, the production process has the advantages that: the innovative process method is adopted, chemical agents are not needed, zero emission is achieved, the production is continuous and the operation is simple. On the premise of ensuring low cost, energy conservation and environmental protection, the tail gas catalytic reducer, namely AUS32, with stable quality can be produced, and a foundation for supplying raw materials is laid for wide-range promotion of the domestic SCR system.

Double helical tooth planetary speed reducer

Abstract: The invention discloses a double helical tooth planetary speed reducer. The double helical tooth planetary speed reducer comprises a shell, an input shaft, an output shaft, and a planetary gear pair which consists of a central gear, a planetary gear and an annular gear, and is characterized in that teeth in the central gear, the planetary gear and the annular gear of the planetary gear pair are double helical teeth; and the annular gear is formed by assembling gear rim segments which are divided into at least two segments along a circumferential direction. Due to adoption of a multi-segment sectional type annular gear structure, all kinds of problems caused by adoption of straight teeth, skewed teeth and double helical teeth of a vertical high-power speed reducer for bearing torque transmission used in a mining hoisting winch in practical production are solved. The double helical tooth planetary speed reducer is extremely suitable for the mining hoisting winch and is also suitable for all kinds of large and small engineering machinery.

Fastener axial force-torsion combine testing machine

Abstract: The invention discloses a microprocessor controlled effective moment testing machine, which comprises a host machine, a measuring and control system and a fixture, wherein the host machine consists of a machine base, an operation box, a torsion sensor, a load sensor, a speed reducer and a servo motor; the measuring and control system performs operating control on the host machine and performs acquisition and processing on data; and the fixture comprises a bolt fixture, a plug, a base plate, a metal sleeve, a force-transfer fixture and a twelve point socket. A loading mechanism arranged on a vehicle body can slide freely on a guide rail of the machine base; the loading mechanism drives the speed reducer by the servo motor to perform torsion loading on test samples; torsion values and clamping loads of the test samples are measured through the sensor; the positive and negative loading and stopping of the testing machine can be operated and controlled artificially; and simultaneously, a torsion angle is detected by a position sensor and detected signals are transmitted to a processing system, so that the measurement of torsion indexes and the drafting of curves of the test samples are completed.

Independent steering device and independent suspension system

Abstract: The embodiment of the utility model relates to an independent steering device, which comprises a steering motor, a reducer, a master pin, a master pin sleeve and a steering angle sensor, wherein the steering motor is connected with the upper end of the master pin through the reducer by adopting a spline; the master pin is inserted into the master pin sleeve; the lower end of the master pin is connected with one end of a lower cross arm of a suspension mechanism by a spherical hinge; the middle part of the master pin is provided with a hole and is connected with one end of a hub motor shaft of a wheel by the hole; the steering motor and the reducer are arranged at the upper end of the master pin sleeve; the lower end of the master pin sleeve is supported on the master pin by a thrust bearing; the middle part of the master pin sleeve is connected with one end of an upper cross arm of the suspension mechanism by a pin; a shell of the steering angle sensor is fixed on the reducer; and a rotating shaft of the steering angle sensor is connected with the top part of the master pin. Moreover, the embodiment of the utility model also provides an independent suspension system adopting the steering device. The embodiment of the utility model has the advantages of simple and compact structure, flexible steering and reduction of mechanical complexity and requirement on processing accuracy so as to reduce manufacturing cost and save time and energy.

Cutting machine special for steel pipes

Abstract: The invention relates to the field of mechanical equipment, and discloses a cutting machine special for steel pipes, which comprises a portal frame. A steel rail is paved below the portal frame, and is provided with two trolleys; and each trolley is provided with a positioning brake device. The cutting machine is characterized in that: a, each trolley is provided with a pair of riding wheels by a bracket respectively; a catch wheel is arranged at the front end of one trolley; at least one riding wheel of the two pairs of riding wheels is a driving wheel and is provided with a speed reducer and a motor; b, the portal frame is provided with a lifting beam matched with a lifting mechanism; the lifting beam is provided with a horizontal slide bushing matched with a horizontal driving mechanism; and the horizontal slide bushing is fixedly provided with a grinding wheel cutting machine of which grinding wheels are arranged downwards. The cutting machine special for the steel pipes solves the problem that a conventional chain-type universal pipe cutting machine is difficult to adjust a pipe cutting length, cuts the pipe at a low speed and cannot ensure the cutting size accuracy of the pipe, and is mainly used for the length cutting of centrifugal ductile iron pipes.

High temperature-resistance salt-resistance oil well cement filtrate reducer

Abstract: The invention discloses a high temperature-resistance salt-resistance oil well cement filtrate reducer. The raw materials used in the production of the reducer comprise AMPS(2-acrylamido-2-methyl propane sulfonic acid), acrylic acid, acrylamide, sodium hydroxide, potassium persulfate and water in a mass part ratio of 32-36:2.5-3:12-15:4-6:0.3-0.5:120. The high temperature-resistance oil well cement filtrate reducer prepared according to the formula is applicable to all-grade cement in accordance with API standards; the additive amount of the reducer in a slurry system at a high temperature of 210 DEG C is 5 to 8 percent of the total volume of slurry; and the water loss rate in well cementation can be effectively controlled within 50ml.

Mixing aeration machine

Abstract: The utility model relates to a mixing aeration machine used for the sewage treatment field. The mixing aeration machine comprises a rotating shaft (1), a dispersible plate (2), a feed pipe (3), and a motor speed reducer (4). On the rotating shaft (1) is nested a base (11) fixed on the top of the pool. The top of the rotating shaft (1) is connected with the output of the motor speed reducer (4). The dispersible plate (2) is nested on the lower end of the rotating shaft (1), the bottom of which has a bearing block (12) fixed on the bottom of the pool. Under the dispersible plate (2) is disposed the feed pipe (3), which has a air inlet (31) on the top, a plurality of feed pores in the tube wall, and is fixed on the bottom of the pool. And on the feed pipe are nested several fixing rings. The mixing aeration machine provided by the utility model wall is characterized by simple structure, convenient installation and high efficiency of dissolving air.

Wind power generation single-stage pitch control double-cycloid speed reducer

Abstract: The invention relates to the technical field of a wind power gear box, in particular to a wind power generation single-stage pitch control double-cycloid speed reducer which is characterized in that firstly, a front base is sequentially connected with an inner cycloid gear ring and a base; secondly, an input shaft is supported at an inner hole of the front base by a bearing, the extending end of the input shaft is connected with an eccentric bearing; thirdly, an output shaft is supported at an inner hole of the base by a bearing; fourthly, load balance rings are arranged between two cycloid gears and at the end of a column pin, the traditional cantilever column pin is changed into a simple supporting structure after being provided with a load balance ring in order to greatly increase the bent resistance of the column pin; and fifthly, a vehicle seal ring is arranged in front of the support bearing of the output shaft to resist oil leak The wind power generation single-stage pitch control double-cycloid speed reducer has single-stage speed reduction, short axial length, light weight and convenient maintenance, the inner and outer cycloid gears have no snaggletooth, thereby the planetary drive carrying capacity of the inner and outer cycloid gears is larger than that of three planetary wheels, the cost of the traditional cycloid speed reducer is less than a half of the cost of a planetary speed reducer, therefore, the manufacturing cost is low as 40-55 percent, and the output shaft is sealed to resist oil leakage and has long service life

Double cycloid single-stage reducer of industrial robot

Abstract: The invention relates to the technical field of reducers of industrial robots, in particular to a double cycloid single-stage reducer of an industrial robot, which is characterized in that (a) single-stage reduction is adopted; (b) an output shaft adopts a large-diameter disc and a rigid cage structure supported at both ends; (c) an elastic stop collar (4), a disk spring (5), an eccentric bearing a, a spacer ring (15), an eccentric bearing b, a disk spring (14) and an elastic stop collar (12) are sequentially arranged on an input shaft (3), wherein the input shaft is connected with the single eccentric bearing a and the single eccentric bearing b by multiple threads of the same direction of turning; initially, the wheel teeth of a cycloid gear A adhere to an upper half gear pin (16) of a pin gear housing (10) along the clockwise direction, and the wheel teeth of a cycloid gear B adhere to the lower half gear pin (16) of the pin gear housing (10) along the counterclockwise direction; and (d) each of the single eccentric bearing a and the single eccentric bearing b is formed by tightly fitting a standard roller bearing without an outer race and an inner eccentric sleeve The invention has the beneficial effects that (1) the structure is simplified, parts are fewer, and the heat radiation space is large; (2) a multiple nut structure formed by the standard bearing and the inner race is adopted, and the difficulty in processing the multiple nuts is greatly reduced; (3) a hollow model similar to RV-E and RV-C can be manufactured; and (4) the internal cycloid gear and the external cycloid gear are in pure rolling engagement, thus under the condition of same input power, the volume of the reducer can be reduced by one grade

Simulation test system of large directly driven permanent magnet wind generating set

Abstract: The invention relates to a simulation test system of a large directly driven permanent magnet wind generating set, comprising a variable frequency speed controller, a dragging motor, a speed reducer,a dynamo magneto, a grid-connected inverter, a set controller, a local electric network eclectically connected with an external electric network and a regulation controller, wherein the variable frequency speed controller, the dragging motor, the speed reducer, the dynamo magneto, the grid-connected inverter and the local electric network are successively and electrically connected; the local electric network is also electrically connected with the set controller and the variable frequency speed controller; the set controller is connected with the dynamo magneto and the grid-connected inverter; and the regulation controller is connected with the variable frequency speed controller, the dragging motor, the speed reducer, the dynamo magneto, the grid-connected inverter, the local electric network and the external electric network. The invention greatly accelerates the development level of large wind power sets in our country, greatly quickens product development speed and judgement levelto product quality, and greatly improves consistency, scientificity and fairness of quality valuation to the large wind power sets.

Front-and-rear-wheel-drive vehicle

Abstract: A front-and-rear-wheel-drive vehicle includes first and second electric drive motors which drive front and rear wheels, the second electric drive motor has a maximum torque greater than that of the first electric drive motor, a first speed reducer which reduces rotation of the first electric drive motor, a second speed reducer which reduces rotation of the second electric drive motor at a speed reduction ratio smaller than that of the first speed reducer, the speed reduction ratios of the first and second speed reducers are set in a manner that a maximum rate of rotation of one of the front and rear wheels corresponding to that of the second electric drive motor is greater than a maximum rate of rotation of the other wheel corresponding to that of the first electric drive motor.

Planetary gear speed reducer

Abstract: A planetary gear speed reducer includes a gear bracket having a center hole and first, second and third locating portions arranged in parallel along the center hole, a sun gear mounted in the center hole of the gear bracket, first gears rotatably mounted in between the first and second locating portions of the gear bracket and meshed with the sun gear, second gears rotatably mounted in between the second and third locating portions of the gear bracket and meshed with the sun gear, and two annular gears respectively meshed with the first gears and the second gears. Enabling the two annular gears to mesh with the first and second gears respectively avoids installation inconvenience due to phase difference between the first and second gears and eliminates interference during rotation of the two annular gears. By means of changing the number of teeth of each gear, the planetary gear speed reducer can provide a low, medium or high reduction ratio.