Showing papers on "Reducer published in 2000"

Air-conditioning circuit has condenser comprising outlet connected with first branch of internal heat exchanger and outlet connected via pressure reducer with second branch

Abstract: An air-conditioning circuit of the type comprising a compressor (10), a condenser (12), a pressure reducer (14) and an evaporator (16) which can be flowed through by a cold fluid, is described. The condenser comprises a first outlet (26) that is connected with a first branch (28) of an internal heat exchanger (30) and a second outlet (32) that is connected via a second pressure reducer with a second branch of the internal heat exchanger. The second branch of the internal heat exchanger is connected downstream of the compressor. The condenser, the internal heat exchanger and the second pressure reducer are designed in the form of a one-piece module (20) which can be installed in the circuit.

Pipe bending machine accurately controlling bent angles of pipes

Abstract: A pipe bending machine accurately controlling bent angle of material pipes includes a base, a material feeding device fixed on the base, an arm-turning shaft fixed in front of the base, a bending mold fixed on the arm-turning shaft, a turning arm rotated by a transmitting device. The turning arm has a clamp mold fixed thereon for clamping a material pipe with help of the bending mold. The transmitting device includes a threaded rod rotated by a motor, a threaded nut screwing with the threaded rod and connected with a pull block, and an interactive device positioned between the pull block and arm-turning shaft. Rotation force of the motor is converted into straight pushing force by means of the threaded rod and the threaded nut. At this time, counter pressure of the ball threaded rod can easily reach zero, so even if a speed reducer of high counter-pressure is provided, the threaded rod can reduce largely the counter-pressure of the speed reducer because of the counter-pressure produced before the threaded rod changes speed. Then the pipe bending machine can accurately bends pipes with high speed.

Oil and liquid lubricating device for electric hub speed reducer of electric bicycle

Abstract: The utility model belongs to an oil and liquid lubricating device for a gear speed reducer of an electric wheel hub of an electric bicycle. The utility model is characterized in that a sealing cavity, which is accommodated with a two-stage speed-reducing driving member of a gear, is arranged in an electric wheel hub and is composed of a front cover of a motor, an oil sealing ring, a gear box cover, a right half-axle assembly, a gear sleeve, a double-face sealing bearing, a plurality of standard and firm members, an oil sealing member, etc. The upper part of the cavity is provided with screw holes used for cleaning and feeding (change) oil, and proper lubricating oil is injected into the cavity. The oil and liquid lubricating device uses an oil-bath lubrication method, and realizes splash lubrication by gear transmission. Thus, the utility model can overcome the defect of the existing device with grease lubrication, avoid dry friction and improve the lubricating condition of the gear transmission with heavy load.

Speed reducer and articulated device for robot

Abstract: PROBLEM TO BE SOLVED: To provide a speed reducer reducing the types of components, manufactured at a low cost, miniaturizing the articulation parts of a robot, and having a waterproofing function and provide an articulated device for the robot miniaturizing the dimension and having a waterproofing function. SOLUTION: This speed reducer is so formed that a first seal member 21 for sealing the speed reducer inside is arranged between a housing 18 for the speed reducer decelerating the rotation of an input shaft and transmitting it to an output shaft, and an outside case 12; a second seal member 22 is arranged parallel to the axial direction P of the output shaft with a clearance interposed outside the first seal member; and the clearance is filled with moisture absorbent. COPYRIGHT: (C)2001,JPO

Optimization of mechanical interface for a practical micro-reducer

Abstract: A micro-reducer, which is characterized by its smaller size, higher reduction ratio and higher reliability, has been successfully developed. To improve the mechanical interface (microscopic design and tribology) of such a micro-mechanism, the configuration, materials, fabrication and surface modification were investigated. The internal energy dissipation of the micro-reducer with two types of bearings and lubrications was measured. Finally the developed micro-reducer, which comprises a 3K-type mechanical paradox planetary gear reduction system and simple gear trains, with oil-lubricated rolling bearing and raw gears was observed to have sufficient performance after 5,000,000 rotations.

Wide range azimuth driving system for satellite communication antenna

Abstract: It is an object of the present invention to provide a wide range azimuth (AZ) driving system for an antenna which has a simple structure and enables costs to be lowered and a producing time to be short. A first worm reducer which is connected to a worm shaft of a motor and a second worm reducer which is intermittently driven by the worm shaft and a clutch are provided, and gears of the two worm reducers engage with a large gear which is arranged to an antenna yoke. Further, one motor can arbitrarily control backlash and both wide range driving at a high speed and tracking driving with high precision are simultaneously possible by properly controlling the clutch and the motor.

One-piece seamless reducer

Abstract: A seamless reducer formed from a single continuous sheet of material includes a first section including a first wall, a second section including a second wall, and a tapered section including a tapered wall. The tapered wall is connected to and extends between the second section and the first section in a direction at an angle from about 25° to about 40° with respect to a central axis.

Vibration control method and vibration control device using this vibration control method

Abstract: PROBLEM TO BE SOLVED: To provide a vibration control device capable of absorbing vibration of a structure having the plural resonance peaks with the single unit constitution. SOLUTION: A dynamic vibration reducer is constituted in the structure 11 being a vibration control object by rockingly supporting movable mass 21 by a spring member 31. An actuator 41 for vibrating and driving the movable mass 21 to the structure 11 is arranged between the structure 11 and the movable mass 21, and the actuator 41 is driven via a control device 71 on the basis of the vibration of the structure 11 detected by a vibration detector 61 arranged in the structure 11 to constitute an active mass damper. A resonance frequency of the dynamic vibration reducer is adjusted so as to coincide with a first resonance frequency of the structure 11, and the active mass damper is constituted so as to efficiently act in a second resonance frequency band of the structure 11.

Micro/macro dynamic characteristics of mechanism with a harmonic speed reducer and precision rotational positioning control using disturbance observer

Abstract: This paper describes the dynamic characteristics and precision rotational positioning of the mechanism with a harmonic speed reducer. The harmonic speed reducer is the reduction gear that is often used for precision robots because they can be made very compact and lightweight without backlash. However they have the friction and the low stiffness which make the positioning performance low. The purpose of this research is to clarify the suitable control method for the rotational positioning mechanism with the reduction gear and to realize high speed and high precision rotational positioning over a wide range. For this purpose, first, the characteristics of the mechanism are examined experimentally. The experimental results show that the mechanism can be represented by two kinds of models, those are micro and macro dynamic models. Then, by using the controller including a disturbance observer, the mechanism has the positioning accuracy better than 1" on the working range more than 4.0×105"

Coal screening and crushing mixer

Abstract: The utility model relates to a coal screening and crushing stirrer. The utility model is provided with a steel structure frame. The upper part of the frame is provided with a screening device approaching to one side. The middle part of the frame is provided with a crushing device approaching to the other side. The lower part of the frame is provided with a stirring device. The screening device is mainly composed of a screen body, a connecting rod and slide block mechanism, an electric motor which provides dynamic force, and a speed reducer. The crushing device is mainly composed of propelling spiral and a grinding disc which are in coaxial arrangement, an electric motor and a speed reducer which drive the propelling spiral and the grinding disc to rotate. The stirring device is mainly composed of a vertically arranged barrel body, a stirring body which is arranged in the barrel body, an electric motor which is used for driving a drive bevel gear wheel and a driven bevel gear wheel and providing dynamic force, and a speed reducer. The utility model has the advantages of compact structure, little ground occupation, low device manufacture cost, convenient operation, and obvious investment and productive benefits.

Speed reducer with rotation detector

Abstract: A speed reducer with rotation detector ( 100 ) is provided with a rotation detector ( 110 ) comprising a code plate ( 111 ) having the positional information corresponding to the rotation, a detecting portion ( 112 ) for detecting the positional information of the code plate ( 111 ) to transform the positional information to an electric signal for output, and an electronic device ( 113 ) having the function of processing the electric signal. The rotation detector ( 110 ) can detect the output rotation of a-first shaft ( 130 ) which is an output shaft at high resolving power and at high accuracy. Also, the speed reducer with rotation detector ( 100 ) is used with a motor ( 190 ) to enable the full-closed control of the motor ( 190 ) to be made at high resolving power and at high accuracy.

Noise reducer for construction equipment

Abstract: A noise reducer for construction machinery, which efficiently reduces noise at low cost with durability, is provided. For this purpose, lamination plates ( 8 ) which are the plates being laminated are bonded, discretely at a predetermined interval (a 1 ), to a part of or the entire of a noise generating element. Lamination plates ( 8 A, 8 E) may be bonded discretely at a plurality of kinds of bonding intervals (a 1 , a 2 ). The lamination plates ( 8 ) with the different number of laminations may be bonded according to a noise generating element.

Heat pump hot water supply system for defrosting process has greater degree of opening of pressure reducer in defrost mode than in normal mode; control unit stops pump in defrost mode

Abstract: The system has a heat pump circuit in which the degree of opening of a pressure reducer in defrost mode is controlled so that it is greater than in normal mode and the defrost control unit stops a circulating pump in defrost mode. The system has a heat pump circuit with a compressor (4), a heat exchanger (5), a pressure reducer (6) and a second heat exchanger (7) connected together by a ring path, a defrost control unit for defrosting the second heat exchanger by controlling the opening of the pressure reducer, a reservoir container (2) for liquid heated in a normal mode, a circulating pipe (17,18) for the liquid in the reservoir container passing through the first heat exchanger and a pump (3) for circulating the liquid. The degree of opening of the pressure reducer in defrost mode is controlled so that it is greater than in normal mode and the control unit stops the pump in defrost mode.

Fully automatic machine for oil extraction

Abstract: This invention relates to a pumping unit comprising: a base (1) and a rack (2); an electric motor (17) with varying frequency power for the pumping unit through a speed reducer (5); a driving hub (7A) connector with said speed reducer (5) for driving a belt (10A) and the other belt (11) with one end connected with a balance weight box; a driven hub (7B) connected to said driving hub (7A) for driving a belt (10B) with one end attached to a sucker rod; an upper platform (3) in which said electric motor (17), said speed reducer (5), said driving hub (7A) and said driven hub (7B) are installed; a driving frequency converter (18) connected with a programmable controller (20) that is connected with an absolute value encoder (16) for dealing with the running conditions of the pump unit. The pumping unit can be automatically controlled by the programmable controller with energy conservation, high efficiency and durability.

Dense bead cycloid steel ball speed reducer

Abstract: The utility model relates to a dense bead cycloid steel ball speed reducer comprising an eccentric shaft and a balance block which are arranged on an input shaft; an eccentric disk which is provided with an inner cycloid roller path is arranged out of the eccentric shaft; one side of the eccentric disk is connected with an inner side surface of the end cover by an anti-rotation mechanism and is connected into integration with an output shaft, and a side surface is provided with an output disc of an outer cycloid roller path; steel ball gears composed of steel balls are densely arranged between two roller paths of the eccentric disk and the output disk to form engagement transmission. A big comprehensive contact curvature radius and a small sliding ratio are favorable to improve and to keep transmission accuracy and service life. Adjusting tightly a cushion applies pre-pressure to transmission, ensures engagement transmission of multiple teeth, eliminates transmission return difference, and has big transmission ratio. The utility model can be used in precise mechanical transmission devices.

Intake manifold of internal combustion engine

Abstract: An intake manifold including a collector defining an intake bore through which an air flow passes, and a noise reducer connected with the collector. The noise reducer includes a base wall mounted to the collector and formed with an aperture substantially aligned with the intake bore, and a cover wall extending over at least a portion of a circumferential inner surface of the wall to reduce noise generated within the intake bore.

Actuator for automobile mechanical gearbox comprises electric motor linked to speed reducer connected to control shaft by kinematic link

Abstract: Selection of the gears requires the translation or rotation of a gearbox control shaft (1) in order to activate the forks (5). Selection movement of the shaft is linked to an engagement movement of the selected gear by first and second motors connected to a control unit under the control of the driver. The first motor comprises a direct current electric motor (6) linked to a speed reducer (7) connected to the shaft by a kinematic link (8-12).

Robot and method of controlling the robot

Abstract: A robot capable of being operated at a high-speed by the full use of a power of a servo-motor, including a motor and a speed reducer, wherein the motor drives the robot through the speed reducer, and the speed reducer is a variable speed reducer capable of varying a reduction ration thereof while the robot is operating reproducibly.

Mechanism of coupling between orthogonal gear speed reducer and motor

Abstract: PROBLEM TO BE SOLVED: To raise rigidity in support of a pinion, while enabling the use of a general purpose motor by widening the selection range of combination of a speed reducer and a motor, and moreover, limiting the number of bearings to its minimum. SOLUTION: In a mechanism of coupling between a hypoid speed reducer 510 and a motor 550, a flange 560 at the front end of a motor casing 559 is coupled, capable of mounting and being removed with the motor attachment flange 520 provided in a gear case 519, and a hollow input shaft 511 of the hypoid speed reducer 510 is supported rotatably by a piece of bearing 518 in the middle position between the tip fitted with a pinion 514 which extends to the inside of the gear case 519 and a rear end 511a extending to the outside of the gear case 519, and the output shaft 511 of the motor is fitted and coupled, capable of mounting and removal to the input shaft 511 from the opening at the end face of the rear end 511a of the input shaft, and the fitting and coupled section between the input shaft 511 and the motor output shaft 551 is supported on both sides.

Rotating and driving device

Abstract: PROBLEM TO BE SOLVED: To stably and precisely control output rotational speed in a rotating and driving device using an elastic body speed reducer. SOLUTION: This rotating and driving device 1, which is a device for rotating and driving a photoreceptor drum of a full-color image-forming device, is provided with a stepping motor 2, the elastic body speed reducer 3, and feedback control means 40, 41, 42, 43. The speed reducer 3, a device that includes a torque-transmitting part that transmits torque by frictional contact of an elastic body but not including a torque-transmitting part by gears, reduces the revolutions of a motor and outputs them to the photoreceptor drum. The feedback control means detects the output rotational speed of the speed reducer 3, to obtain a difference value from a target speed to directly control the rotational speed of the motor by giving a speed command signal to the motor based on the difference value.

Decoder-usable syndrome generation with representation generated with information based on vector portion

Abstract: System (100) for generating syndrome (222) usable in decoder (130) includes reducer (340) and converter (330) Reducer (340) employs information to generate representation (342) Converter (330) generates, with employment of representation (342), syndrome (222)

Method for controlling air conditioner

Abstract: PROBLEM TO BE SOLVED: To suppress reduction of an indoor dehumidifying amount, to enlarge a range of room temperature regulation, and to improve comfortability, in a method for controlling an air conditioner. SOLUTION: In dehumidifying operation (or cooling operation) of the air conditioner formed that an indoor heat exchanger for an air conditioner is divided into three heat exchangers and first and second pressure reducers are situated on respective pipes to interconnect in series the division heat exchangers, in case of a difference between a room temperature Tr and a set temperature Tr being high, advance from a step ST1 to a step ST2 is effected and an outdoor pressure reducer between an outdoor heat exchanger and an indoor heat exchanger is throttled and the first and second pressure reducers are brought into a full opening state and their indoor heat exchangers all form an vaporizer. When the more a difference between the room temperature Tr and the set temperature Tr is lower, advance from a step ST3 to a step ST4 is effected, all of outdoor pressure reducers are brought into a full opening state and the first pressure reducer is throttled to a given value, the second pressure reducer is brought into a full opening state and a part of the indoor heat exchangers form a condenser, and a ratio of their vaporizers is increased. Further, advance from the ST3 to a ST5 is effected, the outdoor pressure reducer is brought into a full opening state and the first pressure reducer is brought into a full opening state. The second pressure reducer is throttled to a given value and a ratio of the condensers of the indoor heat exchangers is increased.

ABS modulator with damping foam on exhaust diaphragm

Abstract: A noise reducer for a valve having a quick release function is disclosed The noise reducer is preferably an open-celled structure that is impervious to dirt, moisture, alcohol, and oil, and acts as both a dampener and a biasing spring to reduce the oscillations of an exhaust diaphragm in an ABS modulator and urge the diaphragm toward a closed position The open-celled foam is preferably an annular configuration so that it does not interfere with the amplitude of displacement of the diaphragm

Machine for cleaning droppings of chicken in barton

Abstract: The utility model relates to a novel chicken manure cleaning machine for henneries, which is suitable for being use in large cage raising type henneries for cleaning chicken manure. The utility model comprises a base, a motor and a speed reducer. A dragging device is driven through chain driving to drag movable manure scratching plates to scratch manure in trenches in a reciprocating mode. In order to ensure the safe operation of the utility model, an automatic safety clutch is installed on an output shaft of the speed reducer, and a traction rope adopts a synthetic fibre rope to replace the original steel rope. The utility model has the advantages of safe operation, no rope break and long service life.

Suspended lifter for pump

Abstract: The utility model relates to auxiliary equipment of a pump. Currently, the working positions of various pumps in water is difficult to adjust. The requirement can not be met unless the operation is carried out in the different depth in water. The utility model has the structure that the lower part of the plane plate of a working plate is provided with float assembly; the upper part of the working plate is provided with a wire reeling wheel, a speed reducer and a jacking motor; the speed reducer are axially connected with the wire reeling wheel, and the speed reducer and the wire reeling wheel are driven by the jacking motor; the wire reeling wheel is coiled with a rope, wherein, the pump can be lifted and fallen off by the rope. The utility model causes the whole pump to suspend in water, and the lifting of the pump can also be conveniently adjusted to meet different requirements of the water depth.

Eddy current type reducer

Abstract: PROBLEM TO BE SOLVED: To install a power-generating means (12, 40) and enable effectiveness for the power generated with the power-generating means (12, 40). SOLUTION: This eddy current type reducer is provided with a braking drum 4, plural electromagnets 30 for braking, which are disposed on a static frame 20 keeping gaps from one rotating surface of the braking drum 4 and maintaining intervals in the circumferential direction, and a storage battery B which is connected with each of the electromagnets 30, so as to supply power to each of the electromagnets 30. The power-generating means (12, 40) are arranged between the other rotating surface of the braking drum 4 and the static frame 20, and connected with the battery B, in such a manner that the power generated with the power generating means (12, 40) is supplied to the battery B and can charge it.

Elevator hoisting machine

Abstract: PROBLEM TO BE SOLVED: To thin an elevator hoisting machine by providing a braking means housed in the radial inside of a cylindrical drive motor to impart a braking force to the drive motor, and setting a speed reducer for reducing and outputting the rotation of the drive motor to a sheave closely on one side of the drive motor and the braking means. SOLUTION: A braking means 27 for imparting a braking force to a permanent magnet 22 that is the rotation part of a drive motor 23 is housed between a substantially cylindrical intermediate member 26 spline-connected to multiple ends of an input shaft 21 and the drive motor 23 or in the radial inside of the drive motor 23 through the intermediate member 26, the input shaft 21 and a rotator 19. When the braking means 27 is housed in the radial inside of the cylindrical drive motor 23, the drive motor 23 is radially superposed on the braking means 27, a hoisting machine 11 is shortened by the axial length portion of the braking means 27 and thinned. Further, when a center crank type speed reducer 20 is adapted, the coaxial arrangement of the speed reducer 20 and the drive motor 23 can be facilitated.

Automatic regrinding machine for round saw-bit

Abstract: The utility model relates to an automatic regrinding machine for a round saw-bit, which is composed of a driving mechanism, a gear drawing bar linkage, and a feeding mechanism; the driving mechanism comprises a grinding wheel motor, a driving motor, a speed reducer, and a machine seat, wherein, a cam which is provided with the grinding wheel motor is arranged in the speed reducer; the feeding mechanism comprises a work table-board, a hand wheel, a screw rod, a mobile nut, and a saw-bit fixation component, wherein, the mobile nut is sheathed on the screw rod which is connected with the hand wheel; the gear drawing bar linkage comprises an eccentric wheel, a link bar, a swing rod, a deflector rod, a fixing bracket, and a ratchet. The utility model has the advantages of simple structure, stable and reliable performance, superior quality of regrinding, high work efficiency, and low cost; furthermore, the utility model is suitable for the regrinding of the round saw-bits with various tooth forms, tooth pitches, and diameters.