Showing papers on "Reducer published in 1986"

Backlash reducer for gear transmission system

Abstract: A backlash reducer for a gear transmission system comprises a main gear and an auxiliary gear which form one of a driving gear and a driven gear in mesh therewith of the gear transmission system. The main gear is mounted on a rotary shaft for rotation therewith, and the auxiliary gear is mounted on the rotary shaft for rotation relative thereto. A backlash reducing mechanism is operable in response to a centrifugal force due to rotation of the rotary shaft for angularly moving the main and auxiliary gears relative to each other to reduce a backlash between the driving and driven gears. The backlash reducer may further comprise a mechanism for restraining the backlash reducing action of the backlash reducing mechanism. Alternatively, the backlash reducer may comprise a first mechanism operable in response to the centrifugal force to move the auxiliary gear axially thereof and a second mechanism for converting the axial movement of the auxiliary gear to circumferential movement thereof.

Reduction gear provided with driving power source

Abstract: A reduction gear provided with a driving power source, which is provided with an eccentrically moving speed reducer (7) having a fixed shaft (16), and a hollow crank member (18) around the fixed shaft (16), and adapted to reduce the rotary force, which is applied to the crank member (18), by an eccentric movement; and an electric rotary force generating means (41) having a magnet (44), a winding (42) and an iron core (43) and adapted to apply a rotary force to the crank member (18), the magnet (44) being fixed to the inner circumferential surface of the crank member (18) in the eccentrically moving speed reducer (7), the iron core (43) being fixed to the outer circumferential surface of the fixed shaft (16) in the eccentrically moving speed reducer (7).

Anti-resonant suspension device having six degrees of freedom for a helicopter

Abstract: The device comprises four identical assemblies evenly spaced apart about the vertical axis of a speed reducer (1), offset 90° from each other and each comprising an isotropic flexible beam (4) carrying a beating weight (14) and connected by its ends to the fuselage, this beam being perpendicular to the vertical axis, and rigid triangulation means (9, 10) connecting the speed reducer (1) to the beam (4) so as transmit its forces and its moments to the beam in a plane parallel to an offset from said vertical axis of the speed reducer (1).

Eccentric gearing with oscillating teeth elements

Abstract: A speed reducer ist chiefly composed of an off-set standard ball bearing wave-generator (5,6), an oscillating-tooth gear (8), including a set of radially- orientated, preferably sliding teeth (10), and a ring gear (1) in the form of a set of preferably needlelike teeth (2) with or without a free sleeve (3) on each. Lubrication of the sliding teeth (10) is provided.

Joint assembly for connecting bus ducts having unequal numbers of runs

Abstract: A reducing joint assembly which, when attached at one end thereof to a bus duct having a predetermined number of runs and at the other end thereof to a bus duct having a different number of runs, allows interconnection of these non-matching ducts without undue wasted length or materials. The reducing joint assembly includes one conventional single bolt coupler at each end thereof for each run to be connected at that respective end of the assembly. Connected between the respective single bolt couplers is a single reducer plate for each phase of the bus duct system. Each such reducer plate has tabs at each end, one for each single bolt coupler, so that the reducer plates in effect interconnect with the single bolt coupler in generally the same manner as do the bus plates of each bus duct. The apparatus also includes specialized joint covers for covering the joint thus created to prevent the entry of foreign objects.

Planetary reducer with internal gear

Abstract: The utility model relates to a planetary reducer with internal gear, which belongs to a universal mechanical driving device. The utility model has the advantages of reasonable design, compact structure, small size, light weight, saving labor, low cost, high efficiency and good manufacturability. Besides, the planetary reducer with internal gear can fully utilize strength capacity of a fixed annulus gear. Compared the other reducers which exports a similar torque, the planetary reducer with internal gear need not increase the series of gear drive and can export a large torque and large transmission ratio. Then the problem which people want to solve for a long time is solved. The utility model not only can decrease the series of gear drive, but also save materials. Meanwhile, the planetary reducer with internal gear is easily standardized and seriated because of simple structure.

Apparatus for varying the damping characteristics of a shock absorber

Abstract: An apparatus for varying the damping characteristics of a shock absorber of the kind comprising a piston rod and an adjusting shaft mounted coaxially within the piston rod for rotation relative to the piston rod. Upon a change in its angular position relative to the piston rod, the adjusting shaft effects a change in an effective oil passage area in the shock absorber, and thus varies its damping characteristics. The adjusting shaft (16) has a free end (15) located at the end of the piston rod. The apparatus comprises a housing (4, 18, 19, 50) arranged to be attached to the end of the piston rod. The housing accommodates, in succession: an electric motor (1) adapted to be driven and positioned in two directions; a speed reducer (2) coupled to an output shaft (26) thereof; and a universal joint (3) disposed between an output member (33) of the speed reducer (2) and the free end (15) of the shock absorber adjusting shaft (16).

Production of tough steel pipe

Abstract: PURPOSE: To produce a tough steel pipe having high strength, excellent corrosion resistance and less anisotropy of toughness, by subjecting a specifically composed ingot successively to heating, hot rolling, quick cooling, reheating, diametral reducing and air cooling under specific conditions. CONSTITUTION: The ingot made of the compsn. contg., by weight %, 0.2W0.55% C, 0.01W0.6% Si, 0.3W1.8% Mn, and 0.005W0.06% Sol Al, and consisting of the balance Fe and unavoidable impurities is heated in a 1,050W1,250°C range. The ingot is then pierced by a piercer and is hot rolled by a mandrel mill. The finishing temp. is set at ≥800°C. The rolled steel is further quickly cooled down to ≤350°C at ≥200°C/min cooling rate in a 800W500°C range to form the structure substantially consisting of ≥50vol% martensite and the balance bainite. The steel is then reheated to the Ac 1 transformation point W (Ac 1 transformation point - 200°C) at which there is substantially no formation of martensite; thereafter, the steel is subjected to the diametral reducing at ≥5% reduction ratio by using a reducer and is air cooled, by which the rolled steel pipe is formed. COPYRIGHT: (C)1988,JPO&Japio

Automatic press brake die changing device

Abstract: PURPOSE:To enable the automatic die change with safe and high workability in a small occupied space by installing adjacent to the main body of a press brake the die storing shelf of a rotary drum die and by arranging the rail member for die transportation corresponding to the rotary center of the rotary drum. CONSTITUTION:The press brake die automatic change device is composed of the die storage device A provided adjacent to the main body of a press brake (figure omitted) and the die carriage device to carry in the upper and lower dies 24, 25 on the rail 14 of the rail member provided adjacent to the head side face part of the press brake. Said die storage device A is composed by fitting plural die storing shelves 2 to store the upper and lower dies 24, 25 on the rotary drum 1 to rotate via pulley 11, 13, belt 12, speed reducer 9, gear 5, etc. by a servomotor 10. On the other hand the die carriage device is composed by placing the air cylinder 16 to actuate the arm 19 which equips with the fork pin 20 engaged with the die 24, 25 on board the moving saddle 22 via a pinion 17 and rack 18 by the driving of a gear motor 15 on said rail 14.

Torque variation reducing mechanism of harmonic speed reducer for industrial robot

Abstract: PURPOSE:To reduce the variation of torque in a harmonic speed reducer for preventing effectively the vibration due to this, by providing a harmonic speed reducer with a holder having been worked in a coil-spring shape at the middle part of a cylinder having the same center as a circular sprine. CONSTITUTION:The shape of the fitting base 4 of a circular sprine 1 is changed to provide a holder 6 between the circular sprine 1 and the base 4. This holder 5 supports elastically the circular sprine 1. Accordingly, for instance, when the central axis of the fitting base 4 of the circular sprine 1 and that of an output shaft 3 is inclined as much as an inclination theta, the holder 5 deforms elastically as much as the amount corresponding to the inclination theta. Thus, without forcing an abnormal deformation on the circular sprine 1 and a flexible sprine 2, the engagement of teeth can be maintained normal, and the variation of torque in a harmonic speed reducer can be reduced.

Method of assembling a motor speed reducer to a device to be driven

Abstract: A plug-in power transmission assembly having a housing with a gear train and with a motor mounted on one side and the output drive shaft extending from the opposite side. The motor has connectors thereon which are received through guides on the housing and extend outwardly in a common direction with the output shaft axis. Releasable fastening means are provided on the output shaft side of the housing. The assembly, as a unit is plugged into a device to be driven and the output shaft, electrical connectors and fastening means are simultaneously engaged.

Drive for double gripper chain conveyor

Abstract: OF THE DISCLOSURE Each gripper chain assembly is driven by its own headshaft. The headshafts rotate in opposite senses and are powered from a motor/reducer combination. A sheave on the output shaft of the reducer is coupled by one endless belt with a sheave on one of the headshafts, and it is also coupled with a sheave on the other of the headshafts by another end-less belt. The one belt is in a non-twisted configuration so that the sheave on the one headshaft rotates in the same sense as the reducer output shaft. The other belt is twisted into a figure eight configuration so that the sheave on the other headshaft rotates in the opposite sense. The two head-shafts therefore provide the desired counter-rotation of the two gripper chain assemblies. The motor reducer is mounted on a base plate which is adjustably positionable on the con-veyor's frame so as to enable the drive to be adjusted when-ever the spacing distance between the two gripper chain assemblies is adjusted for conveying a different sized article. A separator is mounted on the base plate to maintain separation of the twisted drive belt where it crosses itself. In one em-bodiment the base plate is secured by fasteners, but is adjust-ably positionable by loosening the fasteners, performing the adjustment, and then retightening the fasteners. In another embodiment the base plate is mounted on guides and biased to maintain tension in the endless belts while allowing its automatic tracking of gripper chain assemblies' adjustment without the need to loosen and retighten fasteners. The bias may be provided by a counterweight or by springs.

Exposure device for color picture tube

Abstract: PURPOSE:To reduce film unevenness due to diffraction by wider setting the width of a slit opening of a shading cover than the luminous width of a superhigh pressure mercury lamp while oscillating or moving the mercury lamp in the longitudinal and orthogonal directions of the lamp in the horizontal plane for shortening an exposure time. CONSTITUTION:One end of a crank rod 5 is attached to a finger plate 3 connected to a motor 1 through a speed reducer 2 in the position eccentrical from a rotary axis 4 while attaching the other end of the rod 5 to a lamp house 7 housing a mercury lamp 6. The mercury lamp 6 is fixed inside the house 7 so that the longitudinal direction may be parallel to the (x) axis while the sliding frames 8 are attached to both ends of the house 7 slidably in the (y) axis direction. The width of an arc 9 of the mercury lamp 6 is about 0.5mm while the width of a slit hole 11 of a shading cover 10 shall be 2mm. And during exposing the house 7 at least more than once, the house 7 is made to slide in parallel to the (y) axis width the amplitude of 1.5mm. In this way, film unevenness due to Fresnel diffraction can be reduced by shortening an exposure time.

Exhaust noise reducer for car engine

Abstract: PURPOSE:To aim at reduction in a noise in an effective manner, by overlapping each other air column resonances individually generated at plural engine speeds and, upon forming them into a standing wave, making the noise so as to be killed with a single resonance element. CONSTITUTION:In an exhaust pipe ranging from an exhaust manifold converging part 32 to a main muffler 37, a certain degree of air column resonance to be generated according to the pipe length and another air column resonance to be generated in the shape of making the pipe length one a half wavelength in an exhaust pipe ranging from the main muffler 37 to a discharge port 40 both set each pipe length so as to overlap each other with the same wavelength, and these noises are simultaneously killed with a single resonance element 38. That is to say, when the overall length of an exhaust system is set down to L, the main muffler 37 making an expansion element a main body is installed in a position of about 2L/(2n-1) away from the outlet port 40, while the reso nance element 38 having such a relationship as SP/Vp.lp {(2n-1)pi/2L} is installed in a position of about (2m-1)xL/(2n-1) away from the discharge port. For your information, Vp is of capacity, Sp is a sectional area and lp is necked pipe length.

Friction type hoist with direct-connection and multirope

Abstract: The utility model belongs to a hoisting and lifting device used for mines. A direct current dynamo is used in the hoist, stators are split type, and rotors are suspended type. The hoist is directly connected with the flange on the end of the main shaft and drives drums to work, and a reducer, a shaft coupling, and the bearing box and the lubrication station in the electrical machine can be omitted. The gasket is used with a double rope-groove, one of which works and the other of which is standby. Wire ropes can embed and slide out the rope groove conveniently with one changing groove device. The multi-rope hoist can wind on the drums and be used as a single-rope hoist when a mine is built. The multi-rope hoist can be used as a multi-rope hoist after the mine is built, so one multi-rope hoist can be used in two ways. The utility model has the advantages of less investment, short periodicity, steady rotation, and low ambient noise.

Dynamic vibration reducer

Abstract: PURPOSE:To stabilize the characteristics of a dynamic vibration reducer and miniaturize the reducer by making the outside air run into/out of the dynamic vibration reducer every time a weight vibrates in the vertical direction, thereby cooling off an oil cylinder. CONSTITUTION:A weight 11 is placed on a substrate 2 via a plurality of coil springs 7, while an oil damper consisting of an oil cylinder 4, a piston 6, etc. is arranged between the substrate 2 and the weight 11. The substrate 2 is connected to the lower part of the weight 11 with a rubber bellows 13, thereby forming an air chamber inside the bellows 13. At the same time, an air inlet port 14 and an air outlet port 15 are made, which are provided with a lower valve 16 and an upper valve 16, respectively. With this contrivance, since when the weight 11 vibrates, the air runs into or out of the air chamber 13 to cool off the oil cylinder 4, the characteristics of the dynamic vibration reducer can be stabilized, and it is unnecessary to enlarge the cylinder 4.

Metering device with pressure reducer for containers for compressed gas, with components for preventing refilling

Abstract: Device with pressure reducer for containers for compressed gas, with components for preventing refilling. A metering and pressure-reducing device comprises two separate elements (1) and (13). The element (1), which forms the valve, is fitted onto cylinders or containers for compressed gas (40) and the element (2), which is connected to the aforementioned element, forms the pressure reducer and the gas-metering and apportioning device. The connection between the elements (1) and (13) is configured in such a way that flowing out of the compressed gas is prevented. The element (1) is equipped with components for preventing refilling, for which reason the containers (40) are discarded once they have been emptied.

Engine for saddled vehicles

Abstract: PURPOSE:To lessen the car-breadthwise size of a crankcase, by extending one end of a balancer shaft, while supporting gears constituting a gear reducer on this extended part. CONSTITUTION:A crankshaft 16 and a balancer shaft 18 both are set up in a crankcase 12 so as to cause these shaft centers to be paralleled with each other and to be extended in a car width direction. A starting motor 23 is connected to the crankshaft 16 via a gear reducer 22. One end of the balancer shaft 18 is extended and gears constituting this gear reducer 22 are supported on this extended part. Thus, car-breadthwise size in the balancer shaft 18 and the gear reducer is lessened, and size in the crankcase also can be made smaller.

Straightening apparatus of metal pipe

Abstract: PURPOSE:To obtain various straightening methods by installing a hydraulic cylinder which adjusts a clearance between rollers and a pressure regulator and by setting the 1st valve checking reverse flow from the cylinder and the 2nd valve supplying and shutting pressurized liquid to the pressure regulator CONSTITUTION:A screw type reducer 5 is set on top rollers 1a and 3a, a bottom roller 2b, and roller 4, respectively and bottom rollers 1b and 3b are supported by a hydraulic reducer 10 An intermediate top roller 2a is supported by a screw type reducer 5' and a hydraulic reducer 20 Both the electromagnetic valve 15 (the 2nd valve) and the check valve 12 (the 1st valve) which checks pressurized oil flowing through a pressure reducing valve 14 are set on a single action cylinder 11 of the bottom rollers 1b and 3b The combination of the screw type reducer and the hydraulic reducer enables the apparatus to perform various straightening work by some different methods based on material characteristics and use of a metal pipe P

Weld joining method of innerface lining steel pipe

Abstract: PURPOSE:To join with welding high intensity the inner face lining steel pipe having any pipe diameter by providing a pipe enlarging part with making a pipe enlarging work on the opposing end parts of a joining both steel pipes or with welding a reducer. CONSTITUTION:Both ends of a joining pipe body 15 being produced with fitting to the size of steel pipes 1A, 1B to be joined are fitted into the recessed step parts 14a, 14b of the inner face linings 8a, 8b of the pipe enlarging parts 10a, 10b of the right and left both steel pipes 1A, 1B respectively. The end face of the pipe enlarging parts 10a, 10b of both steel pipes 1A, 1B is butted each other in the shape of pinching a pipe body 15 from right and left, then, both ends of the joining pipe body 15 are tightly engaged into the recessed step parts 14a, 14b of both steel pipes 1A, 1B and the sealing is secured. The butted end faces of the pipe enlarging parts 10a, 10b are welded each other, then. By the way a resin is poured and filled from tap holes 12a or 12b into the space M of the inside of the pipe enlarging parts 10a, 10b, if necessary, in case of the fluid body to be flowed into the steel pipes 1A, 1B being of high pressure, etc.

Grinding wheel pressing device in rail in grinding attachment for rail surface

Abstract: PURPOSE:To make a rippling uneven part too polishable to flatness, by letting a grinding wheel, which blocks pressing force with a blocking member having a taper surface corresponding to a wear value of the grinding wheel, go down by degrees with movement of the blocking member and thereby polishing a rail surface with constant pressure. CONSTITUTION:A grinding wheel 11 being supported by a support frame 14 via a connecting piece 20 is forcibly pressed toward a rail 2 by a cylinder 18, but this pressing force of the cylinder 18 is received on a taper surface (a) of a blocking member 23 on a sliding plate 24 installing a receiving member 22 installed in the connecting piece 20 in the frame and, after the taper surface (a) is set according to a wear value of the grinding wheel 11 in advance, rotation making a rear wheel 3 its drive is decelerated via a speed reducer 28 whereby the blocking member 23 is moved according to the wear value of the grinding wheel 11. Therefore, the grinding wheel 11 is always able to polish a rail surface at constant pressure. In addition, the taper surface (a) of the blocking member 23 is adjustable according to the wear value of the grinding wheel 11 by adjustment of each adjust screw 25 of a tilting plate 23' and a moving plate 23'' so that accurate polishing comes possible to be done.