Showing papers on "Reducer published in 2008"

Towards an efficient type-reduction method for interval type-2 fuzzy logic systems

Abstract: This paper introduces an alternative type-reduction method for interval type-2 (IT2) fuzzy logic systems (FLSs), with either continuous or discrete secondary membership function. Unlike the Karnik-Mendel type reducer which is based on the wavy-slice representation of a type-2 fuzzy set, the proposed type reduction algorithm is developed using the vertical-slice representation. One advantage of the approach is the output of the type reducer can be expressed in closed form, thereby providing a tool for the theoretical analysis of IT2 FLSs. The computational complexity of the proposed method is also lower than the uncertainty bounds method and the enhanced Karnik-Mendel method. To assess the feasibility of the proposed type-reducer, it is used to calculate the output of an IT2 fuzzy logic controller (FLCs). Results from a simulated coupled tank experiment demonstrated that IT2 FLCs that employ the proposed type reduction algorithm share similar robustness properties as FLCs based on the Karnik-Mendel type reducer.

Rod reducer instrument for spinal surgery

Abstract: A rod reducer instrument is configured to be secured to a fixation element and to force a rod into engagement with the fixation element. The rod reducer instrument can have a pliers to secure the rod reducer to the fixation element and a threaded shaft with a handle and a pusher member. The pliers can form a threaded channel that engages the threaded shaft and directs a movement of the shaft. The threaded shaft can translate a rotational movement at the handle into a linear movement at the pusher member and in this way force a rod into engagement with a fixation element.

Spinal Rod Reducer and Cap Insertion Apparatus

Abstract: A medical instrument apparatus and method is provided for positioning and securing a spinal rod to a coupling device anchored to a vertebra. A reducer assembly shifts the spinal rod into place within the coupling device and a cap inserter assembly shifts a cap member into locking engagement with the coupling device to secure the spinal rod therein.

Gear reducer electric motor assembly with internal brake

Abstract: A compact gear reducer electric motor assembly with an internal brake disclosed and claimed wherein a high speed electric motor is interconnected with a gear reducer having substantial gear reduction. The assembly includes a spindle, a brake mounted substantially within said high speed electric motor and operable against a spring biasing said brake into engagement with ground. The brake is electrically actuated to permit transmission of energy to the gear reducer. The gear reducer includes an input, intermediate and output planetary stages. The input and intermediate stages residing within the spindle, and, the output planetary stage drives an output ring gear. Releasing means for releasing the output ring gear from the brake allowing rotation thereof.

Manufacture and Use of Parallel Eccentric Electro-Mechanical Actuator

Abstract: A parallel eccentric electro-mechanical actuator provides motive power and includes an electric prime mover that drives the reducer's pinion gear. This pinion drives minimum three star gears with stationary shaft bearings. Each shaft contains an eccentric which are completely in parallel with each other. These eccentrics can be thought of as parallel/in-phase driven crankshafts. Each eccentric drives the parallel eccentric (PE) gear through a bearing. The PE gear exhibits a circular motion (without rotation) which in itself is unbalanced. The crankshafts have another eccentric which create an opposite inertia force to balance that of the PE gear. The PE gear contains an external toothed gear on its periphery. It meshes with the internal teeth of the output ring gear. The relative motion between the PE gear and the ring gear is that the PE gear rolls inside the ring gear. This relative motion is called hypo-cycloidal motion.

Exhaust emission control device of internal combustion engine

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device which: can reduce pressure loss; has a mixer capable of equally mixing a reducer and exhaust air; and can obtain a high NOx purification rate SOLUTION: The exhaust emission control device includes: an NOx purification catalyst; a urea water injection device which is provided at an upstream side of the NOx purification catalyst and jets and supplies the reducer; and the mixer 23 which is provided at a downstream side of the urea water injection device and at the upstream side of the NOx purification catalyst, and mixes the reducer jetted by the urea water injection device and the exhaust air The mixer 23 includes: an outer ring 233 which is fitted around the inner circumference of an exhaust pipe; and a plurality of swirl vanes 235 which are provided on the inner circumferential surface of the outer ring 233 along the circumferential direction with a predetermined space, and which extend from the inner circumferential surface of the outer ring 233 toward a radial direction up to the circumference in the vicinity of the center of the mixer 23 in such a way that the vicinity of the center of the mixer 23 becomes a cavity The urea water injection device has an injection nozzle which is provided at the position where the jetted reducer hits against the swirl vanes 235 COPYRIGHT: (C)2011,JPO&INPIT

Food Molding Mechanism for a Food Patty Molding Machine

Abstract: A food molding mechanism for a patty-forming machine that uses a servomotor to drive a crank arrangement. The crank arrangement drives a mold plate. The mechanism uses a reducer with a replaceable output shaft. The reducer engages a servomotor utilizing a double enveloping worm gear providing gear enmeshment across an arc portion of the servomotor main gear. A servomotor driven knockout apparatus comprises a cam and lever arrangement. Oil reservoirs for the knock-out cams are substantially sealed in the mold cover.

Robot joint based on harmonic wave speed reducer

Abstract: The invention relates to a robot joint based on harmonic reducers, which comprises a motor, an encoder connected with the motor, a harmonic reducer connected with a rotor of the motor, and a transmission mechanism connected with the harmonic reducer; wherein, the harmonic reducer comprises a wave generator, a flexible wheel outside the wave generator, a fixed steel wheel outside the flexible wheel and a rotary steel wheel; the transmission mechanism comprises a housing fixedly connected with the fixed steel wheel of the harmonic reducer and an end cover fixedly connected with the rotary steel wheel of the harmonic reducer; a bearing is arranged between the housing and the end cover. The robot joint has the advantages of high drive ratio, high reliability, compact structure, ability to substitute the robot joint in the prior art, gradual decrease with the size of the harmonic reducer, higher applicability to joint transmission of miniature robot, and wide application prospect.

Eccentric speed reducer

Abstract: An eccentric speed reducer is provided with which it is possible to achieve improved output torque without increasing the outer radial dimension of the casing. A tapered side is formed on at least part of a peripheral side surface of struts 18 , with the tapered side extending in a tapered manner in the longitudinal direction of the struts 18 in a direction that is oblique to a direction parallel to a center line P passing through a casing 14 so as to connect inner circumferential centers of the casing 14 and in which the struts 18 narrow toward an end carrier 17 . A tapered side gradient that is the angle of a direction in which the tapered side extends relative to the direction parallel to the center line P is formed to be at least 3 degrees and at most 6 degrees.

Boundary layer effect turbine

Abstract: Described herein are embodiments of a boundary layer effect turbine and a hydrodynamic speed reducer. Described is a boundary layer effect turbine that utilizes the phenomena of the boundary layer to drive a turbine impeller that is made of a plurality of spaced disks oriented along a rotatable shaft. As operating fluid is directed over surfaces of the plurality of disks of the boundary layer effect turbine, energy is transferred from the fluid to the disks as a result of the adhesive and viscous properties of the fluid.

Joint device, robot arm, and finger unit

Abstract: PROBLEM TO BE SOLVED: To provide a joint device, a robot arm and a finger unit can prevent a speed reducer from being damaged by releasing an external force acting on the speed reducer even when an excessive force exceeding an allowable external torque acts on the speed reducer assembled in the joint device of a robot. SOLUTION: A joint member J includes a harmonic drive H having a wave generator 31 rotated around a predetermined axis P by the output of a motor M assembled in link members L transmitted thereto through a transmission mechanism T, a flexible spline 32 having an inner peripheral section joined to the outer peripheral section of the wave generator 31, and a circular spline 34 having, on the inner peripheral section, a tooth section 38 meshed with a tooth section 37 formed on the outer peripheral section of the flexible spline 32. The flexible spline 32 is connected to one link member L1 through a torque limiting mechanism R, and the circular spline 34 is connected to the other link member L2. COPYRIGHT: (C)2010,JPO&INPIT

Sphere boring machine tool

Abstract: A spherical drilling machine tool is characterized in that the machine tool body of the machine tool is provided with two hydraulic slide units in zygomorphy, and the two hydraulic slide units are respectively provided with a power head and a drilling clamp apparatus, a worktable is arranged between the two hydraulic slide units, and the worktable is composed of a swing rotating mechanism and an irresolute rotating mechanism; the swing rotating mechanism is provided with a guide rail seat on the machine tool body of the machine tool, the guide rail seat is provided with a swing rotating cambered guide rail, a swing rotating step motor is connected with a swing rotating reducer, the output shaft of which is provided with a drive gear, and the drive gear is meshed with a swing rotating segment gear fixed on the base of the worktable; the irresolute rotating mechanism arranges an irresolute rotating step motor and an irresolute rotating reducer on the base of the worktable, and the irresolute rotating step motor outputted by the irresolute rotating reducer is used as a driving piece of an irresolute rotating indexing disc. The spherical drilling machine tool can effectively lower the work intensity of workers and improve the machining precision of workpieces.

Vehicle drive device and hydraulic circuit thereof

Abstract: A vehicle drive device (1) includes: an electric motor (2) that drives wheels of a vehicle; a speed reducer (12) that reduces a driving rotation rate of the electric motor (2); a differential device (13) that distributes an output of the speed reducer (12) to a left wheel and a right wheel of the vehicle; and an engager (37) that is provided between either one of the left wheel or the right wheel of the vehicle and the differential device (13), and performs an engagement and a disengagement of a drive power therebetween.

Wheeled type permanent magnetism adsorption pipeline creeping robot

Abstract: A wheel-type permanent magnetic absorptive pipeline crawling robot includes a four-wheel driving trolley, a permanent magnetic absorptive mechanism and a steering mechanism. The trolley consists of four sets of wheel groups, which are installed at a trolley frame. The wheel group all includes a wheel frame, a wheel, a wheel shaft, a steering shaft of the wheel frame, a speed reducer and a motor. The permanent magnetic absorptive mechanism includes a gag bit and two magnet groups with reverse polarities. The steering mechanism includes a bracket, a driving chain wheel, a shaft of the driving chain wheel, a chain, the speed reducer and the motor. The permanent magnetic absorptive mechanism is connected with the bottom of the trolley frame. The steering mechanism is fixed at the trolley frame. The robot of the present invention can crawl at the external surface of an oblique pipeline according to any route and can arrive at any position of the external surface of the pipeline according to the requirement, and a lengthways axes of the trolley is always kept being parallel to the axes of the pipeline when the robot is crawling. The present invention has compact structure, small size, light weight, simple and convenient control, flexible motion and strong ability of bearing loads; the present invention can carry high pressure water sprayers, blackwash sprayers, inspecting sensors etc. of different types; the present invention can be widely used for the maintenance works of cleaning, lacquering , inspecting etc. of the pipeline, a store tank etc.

High activity biological nutrition water-loss reducer and preparation method thereof

Abstract: The invention provides a high activity bio-nutritive water retention agent, which adopts super absorbent resin as host crystal, uses 1-10% glycerin solution as surface cross linker, simultaneously compounds 10-20% humate / fulvic acid salt solution and 10% high activity biological bacteria (like EM bacterium fluid) to prepare high activity water retention agent. The invention has relatively high biological activity, and is applied to agriculture and forest industry, and improves production, strengthens effect, protects environment and greatly improves soil-improving ability. The invention adopts compounding biological agents with high activity under acidity condition, which is beneficial for survival and propagation of strains. The invention does not kill strains when dries at low temperature, and is beneficial for dormancy and storage of strains.

Methods to protect selective catalyst reducer aftertreatment devices during uncontrolled diesel particulate filter regeneration

Abstract: The present invention is directed to a method to operate an electronically controlled internal combustion engine with an exhaust system equipped with a diesel particulate filter upstream of a selective catalyst reducer to protect the selective catalyst reducer from premature aging and failure caused by exhaust temperature heat generated during uncontrolled regeneration of the diesel particulate filter.

Feeding device for viscous powdery material

Abstract: A sticky powder material feeding device belongs to a material feed device which is provided with a motor 1, a reducer 2, a material bin 3, a rotating shaft 6 and a discharge opening adjusting device7 from up to down. The rotating shaft 6 extends to the upward side of the discharge opening from the center at the top part of the material bin 3; at least one stirring rod 4 is arranged on the length direction of the rotating shaft 6 and the number of the stirring rods is best to be 3 to 7; the end part of the stirring rod 4 is provided with a scrape 5; the utility model solves the problems that sticky powder materials are sticky and are hard to feed as well as improves the manufacture efficiency and product quality; the sticky powder material feeding device of the utility model has simple integral structure, small occupied land, low working resistance, less power consumption and better discharge effect; the sticky powder material feeding device can be improved and used on the material bin 3 with various types ahd various conicity, can also save the investment, reduce the maintenance load of the device and create remarkable benefits for an enterprise.

Horizontal and vertical multi-shaft automation control drilling and tapping machine

Abstract: The utility model discloses a horizontal and vertical multi-shaft automatic control drilling and tapping machine, which comprises a lathe, a workbench, a motor and a reducer of a feeding mechanism of a power device, and an output drive main shaft of the feeding mechanism; the drive main shaft is provided with a lifting motor, a reducer, a main shaft variable frequency motor, a main shaft pulley with a gear, a motor with a gear, a rotating shaft circular disk with a gear, a main shaft drill rig with a gear, an indexing disk fixing device and a workbench base from top to down; the number of the main shaft drill rig with a gear can be designed according to requirements for a plurality of procedures for the processed parts; processing to the processed parts can be completed at one time; more than one procedures can be carried, so as to improve the precision, accuracy and benefit

Reducer tank arranging structure in vehicle

Abstract: PROBLEM TO BE SOLVED: To provide a reducer tank arranging structure capable of effectively arranging a reducer tank additionally provided in a vehicle. SOLUTION: A urea tank 1 is arranged on the outside in the vehicle cross direction of a rear side frame 10 constituting the vehicle body V, more concretely, between a side panel inner 3a and a side panel outer 3b of a side panel 3 arranged on the outside in the vehicle cross direction of the rear side frame 10. Consequently, it is possible to arrange the urea tank 1 additionally provided in the vehicle V by using a dead space on the outside in the vehicle cross direction of the rear side frame 10. COPYRIGHT: (C)2009,JPO&INPIT

Winding machine with wet-type friction slice clutch having hollow hook lowering function

Abstract: Provided is a hoister of wet friction clutches, which is capable of lowering down sky-hooks and comprises a drum, a wet friction clutch, a planetary speed reducer and a brake connected with the planetary speed reducer The invention is characterized in that the planetary speed reducer and the wet friction clutch are all disposed inside the drum, a connection shaft of the clutch is connected with a revolvable spline housing of the planetary speed reducer, an outer casing of the clutch is placed at the end portion of the drum through a self-aligning bearing, and the self-aligning bearing is axially positioned by utilizing an end cap The invention employs the structure that the speed reducer and the clutch are disposed inside the drum, thereby the space inside the drum is taken full use of and the whole hoister has compact structure and attractive appearance Particularly, because the wet friction clutch structurally connecting normal opening and normal closing is utilized on the hoister, high reliability of normally closing structure and good controllability of normally opening structure are skillfully combined, thereby increasing the speed of lowering down the sky-hook, greatly improving production efficiency and being very safe and reliable The invention is adaptable for various cranes or the derived equipment thereof

Gas pipeline drag reducer and preparation thereof

Abstract: The invention relates to a gas pipeline drag reducer used in gas and particularly natural gas conveying pipeline drag reduction and a preparation method thereof, relating to a macromolecular compound composition and the pipeline system technical field The gas pipeline drag reducer is characterized in that: the drag reducer is synthesized by long-chain acid and enamine according to a molar ratio of between 1:1 and 22:1 The preparation method comprises the following steps that: the long chain acid in proportional quantity is added in a reaction container; a heater is started so as to carry out heating while stirring; when temperature reaches to 100 DEG C, the long chain acid is melted, and the enamine in proportional quantity is added at the same time; nitrogen is fed in to carry out protection, and the mixture is preheated to between 120 and 140 DEG C; after preheating is finished, programmed heating is carried out till temperature is increased to between 210 and 220 DEG C; a stirrer is removed and a vacuum pump is connected to carry out evacuation for 2 to 4 hours; when reaction is finished, brown solid crude product can be obtained after cooling down The gas pipeline drag reducer has obvious drag reduction effect on gas pipelines, direct source of raw materials, simple operation, moderate reaction conditions, relatively simple process and low requirements on equipment, and is easy to realize large-scale industrialized production

Rough rolling vertical roller mill

Abstract: The invention relates to a rough rolling vertical milling caster is provided, wherein, the main transmission combination speed reducer is a whole structure, the output axle is two output gear axles arranged vertically, a main transmission motor is connected with the main transmission combine speed reducer by a shaft joint, the two output gear axles extending vertically under the main transmission combination speed reducer are connected with a cross universal spiale, a sleeve at the low end of the cross universal spiale is arranged on the roller platycephaly of a roller structure on a lead rail equipment, the two sides of the roller structure is connected with a side pressure screwdown equipment of a transmission bolt structure with direct current motor driving gear, a hydraulic pressure roll changing lifting device is arranged on a frame under the main transmission combination speed reducer, a side of the lead rail base equipment is arranged with a roll changing structure. The advantage of the invention is that: the invention improves the transmission rigidity and service life, which can meet the requirements of large torsion distance; the invention can realize quick roll changing, which shortens the online roll changing time greatly and improves work efficiency; the invention cooperates with a plain-barrel rolling machine, which can produce blank with different standard and lowers the process cost.

Machine for recycling and briquetting and polystyrene foam

Abstract: The invention relates to a foaming polystyrene recycling granulator, which is the granulitization equipment of expandable polystyrene and plastic-extruding polystyrene recycling material. The granulator comprises machine frame, hopper, moving tool shaft, moving tool blade, static tool blade, grinding motor, reducer of grinding motor, extruding cylinder, extruding screw, granulation molding head, extruding motor and reducer of extruding motor. The hopper is set on the upper part of machine frame. The moving tool shaft is set on the upper part of hopper. The static tool blade is set in the hopper to match with the moving tool blade. The output shaft of reducer of grinding motor is connected with the moving tool shaft by coupler. Material output port is set at the lower part of hopper and is connected with the material feeding port of extruding cylinder. Electric heating plates are set at two sides of the lower part of hopper. The extruding cylinder is set on the machine frame and the extruding screw is set in the extruding cylinder. The granulation molding head is set at the front end of extruding cylinder and the reducer of extruding motor is set at the tail end of extruding cylinder. The extruding motor is connected with the reducer of extruding motor. Electric heater is set out of the extruding cylinder.

A new study on optimal calculation of partial transmission ratios of two-step helical gearboxes

Abstract: This paper introduces a new study on the applications of optimization and computer techniques for optimal calculation of the partial ratios of two-step helical gearboxes for minimal reducer length. In the paper, basing on moment equilibrium condition of a mechanic system including two gear units and their regular resistance condition, a new way for determining the partial ratios of two-step helical gearboxes were suggested. By using regression analysis, explicit models for calculation of the partial ratios are given. These models allow calculating the ratios accurately and simply.

Device for determining clogging of reducer path and method for determining clogging of reducer path

Abstract: PROBLEM TO BE SOLVED: To provide a device for determining clogging of a reducer path and a method for determining clogging of the reducer path capable of precisely detecting clogging and estimating a clogging section when clogging occurs in some section of a supply line and a return line. SOLUTION: This device is provided with; a pump drive control means executing DUTY control of the pump to keep pressure value at predetermined value; a drive DUTY determination means determining whether drive DUTY of the pump is less than a predetermined threshold corresponding to opening of a reducer injection valve; a pressure drop quantity operation means calculating pressure drop quantity by which pressure value detected by a pressure sensor drops in predetermined period of time after stopping a pump and fully opening the reducer injection valve in predetermined time when it is determined that drive DUTY of the pump is less than the threshold; and a clogging determination means determining whether clogging occurs in the first reducer path or the second reducer path based on pressure drop quantity calculated by the pressure drop quantity operation means. COPYRIGHT: (C)2008,JPO&INPIT

Full hydraulic pressure self-power relay bucket-wheel excavator

Abstract: The utility model relates to a full hydraulic automatic power relay type bucket wheel excavator, consisting of a bucket wheel device, a bucket wheel hydraulic motor speed reducer, a material picking-conveying device, a fixed material receiving bucket, a pitching mechanism of a discharging-conveying device, a material discharging-conveying device, a diesel engine, a hydraulic pump station, a track running device, a running hydraulic motor speed reducer, a rotary hydraulic motor speed reducer, a rotary device, a control room, an electric control device as well as a pitching mechanism of a material taking arm and a rear car. The utility model adopts the diesel engine as the power source of an excavator, adopts hydraulic pressure in the operation and the gyration of a host machine, the rotation of a bucket wheel and the transmission of a conveyor, is safe and reliable in operation, low in failure rate, compact in structure, small in volume, wide in application fields and suitable for large earthwork engineering, can be controlled remotely, and is flexible and convenient to operate. The exertion of the relay type rear car can lead materials to be conveyed to required positions directly.

Method for preparing formic acid, methanol and methane by using metal hydro-thermal to reduce CO2

Abstract: The invention discloses a method of reducing CO2 to prepare methanoic acid, methanol and methane under hydrothermal conditions by using metal, and relates to the method of transforming pure CO2 gas or CO2 in waste gas into industrial material that is the methanoic acid, the methanol and the methane. The pure CO2 or CO2 in waste gas, water as well as reducer, and a catalyst are put in a hydrothermal reactor; the CO2 is performed through hydrothermal reduction to obtain the methanoic acid, the methanol and the methane under the conditions that the addition quantity of the reducer is 1 to 25 times (by molar ratio) the content of the CO2 which is put in the reaction equipment, the addition quantity of the catalyst is 0 to 10 times (by molar ratio) the quantity of the reducer, the reaction temperature ranges from 200 DEG C to 245 DEG C, the reaction pressure ranges from 5MPa to 25MPa, the pH value ranges from 8 to 14, and the reaction time ranges from 10 minutes to 12 hours. A gaseous phase products that is the methane can be collected through gas-liquid separation, and the methanoic acid and the methanol mixed solution is separated and purified at the same time. The method efficiently transforms the CO2 into organic matters with high additional value in a low consumption way, the CO2 is changed into resource, the technology is simple without the secondary pollution, and worthful economic and social benefits are realized.