Showing papers on "Reducer published in 1992"

Epicyclic speed reducer designed for fitment to the transmission between the gas turbine and air compressor of an aircraft engine

Abstract: A speed reducer has a sun gear for connection to a turbine of an engine and a planet carrier supporting a number of planetary gears meshing with the sun gear and with the ring gear fitted to the engine mounting. According to the present invention, the planet carrier has a first annular element having pairs of seats for pins on each of which rotates one of the planetary gears. A second annular element for connection to a compressor of the engine has a number of axial arms fitted inside respective cavities of the first annular element. An end of each axial arm is connected to a portion of the first annular element that is substantially equidistant between to the seats of each of the pairs of seats.

Electrostatic high voltage, low pressure paint spray gun

Abstract: Easily replaceable pressure reducers (190, 200) are located at the front of the spray gun (20) behind the air (180) and fluid (178) nozzles. These reducers (190, 200) are calibrated and marked for use with a particular air (180)/fluid (178) nozzle combination and maintain ≦ 10 psig exit air pressure. If the air (180)/fluid (178) nozzle combination is changed, the pressure reducers (190, 200) matched to the new combination (180, 178) are installed at the same time, illustratively using a screwdriver. By designing the air (180)/fluid (178) nozzle combination and pressure reducers (190, 200) as matched sets, the spray gun (20) can always inexpensively be kept in compliance with any requirements under which an HVLP device must operate. "Fan-" or shaping-compressed air driven from the same compressed air which supplies the nozzle (180, 178) air is supplied through an additional pressure reducer valve (52) to reduce its pressure below that of the nozzle (180, 178) air. The fan air reducer (52) employs a drilled orifice (208) of a calculated diameter. The atomizing air reducer (190) is of a needle (192) type that utilizes a controlling outside diameter.

Ophthalmic lens removal method and apparatus

Abstract: Apparatus for reducing the size of an object disposed in a generally closed fluid medium includes a handpiece having an axis extending from a housing at a proximal end to a probe at an opposing distal end. A reducer at the distal end of the probe is adapted for insertion into the fluid medium where it is rotatable to reduce in size the object. The reducer is configured to create a fluid flow in the fluid medium so that the handpiece can be maintained laterally and axially stationary while the object is moved by the fluid flow into contact with the reducer. An associated method includes the steps of rotating the rotary member at a speed sufficient to reduce the size of the object, and in a manner to produce a flow of the fluid sufficient to move the object into the rotary member.

RFOG rotation rate error reducer having resonator mode symmetrization

Abstract: An error reducer for reducing rotation rate errors, arising because of polarization modes coupling and differing polarization modes characteristics associated with a coiled optical fiber in a rotation sensor, by causing an electromagnetic wave source to direct electromagnetic waves propagating in one of said opposing directions to oscillate in frequency value between frequencies occurring in adjacent opposite polarization mode resonances of those waves.

Heavy load-bearing cycloid pin gear planetary speed reducer

Abstract: The utility model relates to a heavy load-bearing cycloid needle gear planet speed reducer The utility model has the structure that a machine base, a machine casing and an original machine model are identical, a motor shaft is connected with a shaft sleeve through keys, the shaft sleeve is connected with an input shaft through multiple keys, and needle teeth are fixed on a needle tooth casing The utility model is characterized in that three eccentric sleeves are uniformly distributed in an angle of 120 DEG and connected with the input shaft through multiple keys, the eccentric sleeve is connected with three cycloidal wheels which are uniformly distributed in an angle of 120 DEG through a bearing, and motive power is output through a W output mechanism The utility model has the advantages of compact structure and small size Besides, the load-bearing capacity of the utility model is enhanced by more than 30% compared with an original machine model, and the utility model can be used for industries, such as metallurgy, petroleum, chemical engineering, mining, coal, hoisting, etc, which have poor operating condition

Ball-type speed reducer

Abstract: A novel and improved rotary shaft coupling including a ball-type speed reducer. A driving disc is coupled to a driven disc through a plurality of balls loosely held in a circular array of holes. Each ball registers with opposing faces of elliptic and hypocycloidal grooves of the driven and driving disc, respectively. When the driving disc is rotated, the balls transmit a turning force through the grooves to the driven disc. Speed reduction is determined by the number of waves in the hypocycloidal groove exceeding, by an even number, the number of balls.

Method of installing a slide locking mechanism in a press

Abstract: A method of installing a slide locking mechanism in a press mechanism so as to lock a press slide of the press mechanism in any of a plurality of positions. The press mechanism includes a gear train mounted in a housing. An installable slide locking mechanism, which includes a gear reducer and a locking gear, is mounted adjacent an opening made in the gear train housing. The gear reducer meshes with an input gear of the gear train, thereby preventing rotation of the gear train when the locking gear is moved to a locking position with respect to the gear reducer.

Method and device for manufacturing welded tube

Abstract: PURPOSE: To reduce an uneven metal between a weld zone and a base metal part, which is generated at the time of contracting the diameter by cold working by a reducer with respect to a welded tube. CONSTITUTION: While carrying a strip S in its longitudinal axial direction, it is formed to an open pipe OP in which both side edge parts E, E in the width direction are opposed to each other by a forming roll group of a breakdown roll 3, a cluster roll 4 and a fin pass roll 5, and both side edge parts E, E of the open pipe OP are set to a heated and melted state by a welding machine 7. Subsequently, both side edge parts E, E are subjected to butt welding by a squeeze roll 6, and thereafter, metal increase forming is executed to a welded tube P by a metal increase forming machine 8, and thereafter, a weld zone is cooled by a cooling device 9, and the diameter reduction is performed, while imparting a stretch by a reducer 10, or without imparting the stretch. COPYRIGHT: (C)1993,JPO&Japio

Speed reducer of the cycloidal type for robots and other industrial manipulators

Abstract: A speed reducer of the cycloidal type for robots and other industrial manipulators which includes actuation fingers introduced in openings of toothed cams controlled by rotating eccentrics. Each actuation finger is formed by a roller bearing having an inner ring mounted about a pin with clearance to thereby allow self-centering of an outer ring of each roller bearing in its respective opening.

Back force type shaft distance changing automobile brake test platform

Abstract: The utility model relates to a back force type shaft distance changing automobile brake test platform; the frame of a worktable is fixed with two groups of rollers, and the bearing seats at the two ends of the back rollers can be adjusted. The same shaft side of the front and back rollers is in chain transmission, the other shaft end of the front roller is interlocked with a motor and a speed reducer, and the output shaft of the speed reducer is connected with an output arm; the output arm is provided with a pressure sensor. When the utility model is used for testing, the automobile brake provides a back force for the rollers, and the speed reducer and the rollers can produce differential movement; the output arm receives the stress, and the electrical signal is conducted to the computer by the sensor and is displayed by the computer. The utility model has the advantages of wide range of application and accurate test.

Long stroke platform drum oil pump

Abstract: The utility model discloses a novel long stroke platform rack type roller oil pumping device without a slide beam The novel long stroke platform rack type roller oil pumping device without a slide beam is realized by that the existing bevel gear reversing mechanism is substituted by a novel planetary gear reversing speed reducer The positive and reverse rotation of a roller is driven by the automatic positive and reverse reversing of the novel planetary gear reversing speed reducer through a motor and belt transmission A polished rod steel rope continuously winds and loosens inside a spiral groove on the roller to drive a rope hanging device to up and down move to complete pumping action The novel planetary gear reversing speed reducer is used, the adjustable range of the stroke of the novel long stroke platform rack type roller oil pumping device without a slide beam is large, and the action of oil pumping and pressing is transformed in a speed reduction mode Therefore, the novel long stroke platform rack type roller oil pumping device without a slide beam can satisfy the oil pumping requirements of long stroke, higher stroke frequency, and large discharge quantity Due to the fact that a balance system is adopted, and the novel long stroke platform rack type roller oil pumping device without a slide beam has marked energy-saving effect

Grease composition for speed reducer

Abstract: PURPOSE:To provide a grease capable of suppressing abrasion of a resin case without swelling a rubber material in a speed reducer in which rubber parts and reduction gears are housed in a gear case and at least reduction gear bearing parts of the aforementioned gear case are made of a resin. CONSTITUTION:A grease composition for a speed reducer is obtained by blending (1) 100 pts.wt. polyoxyalkylene and/or a polyoxyalkylene ether derivative having 10-1500cSt kinematic viscosity at 40 deg.C temperature with (2) 2-35 pts.wt. metallic salt of a fatty acid and (3) 1-35 pts. wt. organomolybdenum compound and/or polytetrafluoroethylene.

Harmonic geared reduction unit

Abstract: The utility model relates to a special harmonic gear speed reducer for a jigger, which can be used for the major repair of a steam turbine in a power plant The utility model is an improved type machine of a planet gear speed reducer A machine body and an output wheel are matched by a concave-convex structure Thus the volume of the speed reducer is greatly reduced, and the weight of the speed reducer is reduced Meanwhile, a cycloidal gear, a gear pin, a pin, etc, are cancelled, new parts, such as a rigidity gear, a flexible gear, a rigidity ring, etc, are used Consequently, the working performance of the special speed reducer for the jigger of the turbine is improved Thus, the utility model is an ideal special jigger machine when the turbine in the power plant is in the major repair

Load compensator for geared holdback devices

Abstract: A holdback system is provided which allows additional rotation of a shaft following actuation of an associated holdback device. That additional rotation of a shaft permits other associated holdbacks to actuate. This additional rotation of a rotatable shaft, such as a shaft of a speed reducer, is accomplished by providing a helical gear of a speed reducer mechanism in gear mesh relation with a helical gear of a speed reducer and, in addition, allowing the driven helical gear of the holdback mechanism to move axially after the holdback mechanism is actuated. This axial movement permits the driving helical gear of the speed reducer to rotate by a preselected amount and allow the entire system to move a slight degree in the reverse direction. This reverse movement permits other later actuated holdbacks to actuate and share the overall load with the earliest actuating holdback.

Potential energy lift

Abstract: The utility model provides a potential energy lift distinguished from all the lifting devices including the existing elevators and with simple structure and convenience for manufacture and maintenance. The utility model is characterized in using the method of changing the hanging-box and balancing weight of the quantity of water (increasing potential energy) of the two sides with a water pump and a rubber pipe. The potential energy lift is a new lifting device which can make the hanging-box obtain impetus. Because the change of the transmitting theory, the utility model does not use speed reducer and two-speed motor.

Heavy-duty drawing machine with water tanks

Abstract: The utility model discloses a heavy-duty drawing machine with water tanks. The utility model belongs to the drawing equipment of the metal wire material, composed of a speed reducer, a water tank and a wire receiving machine group. The utility model only uses one motor to make incoming wires and a reel barrel receive wires. An output shaft and the speed reducer become one body. The shape of a transmission gear wheel of the speed reducer looks like the Chinese character 'ren'. The utility model has the advantages of high capability, strong stability, convenient operation and high strength. The operation has no noise. The utility model is not easy to wear out. The diameter of a tower wheel of an incoming wire is large. The semi-finished products of high carbon steel wires are drawn. The range of incoming wire is wide. The largest value is 5.6 millimeters. The range of outgoing wire is 3.2-0.8 millimeters. The linear speed of drawing is 250-350 meter / minute. The utility model has an adjustable wire outgoing mould box. The utility model ensures the integration of the drawing tangent wire.

Speed reducer of the cycloidal type for robots and other industrial manipulators

Abstract: A speed reducer of the cycloidal type for robots and other industrial manipulators including a rotating ring which receives input at rapid speed is supported within a casing by a single end bearing which forms a pivot. The opposite end of the ring abuts against roller bearings associated with a pair of cams. Actuation fingers are oriented through housings created by openings in the cams and are connected to an output. The actuation fingers are arranged to be self-centered in the housings.

Two-stage pressure reducer for air pipe line

Abstract: The utility model provides a two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry. The two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry comprises a piston type first stage pressure reducer, a diaphragm sheet type second stage pressure reducer, and a connecting device which are designed into an integral body. The actual effect of the two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry is that the two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry can realize pipeline pressure centralized control, and can simultaneously supply air. The two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry has safe pressure reduction, stable working pressure, and no fluctuation. The two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry can optionally regulate pressure within the range of 0.1-1.5 MPa. Each index of the two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry achieves the specification in an international IS07291-90 standard. The two-stage pressure reducer which is used for an air pipeline and is especially suitable for an industry has small volume, high precision, low cost, light quality, and easy production.

Articulated mechanism of robot

Abstract: PURPOSE:To improve the positioning accuracy of a robot by means of feedback control as well as to check any vibration at a tip of the robot, in an articulated mechanism in the robot inclusive of a manipulator, a scalar robot or the like. CONSTITUTION:A robot articulated mechanism consists of a rotary actuator 1 and a speed reducer 2 for decelerating a turning angle of the rotary actuator 1, and a first rotation detector 40 detecting a turning angle of an output shaft 5 is installed at the side of the output shaft 5 of the speed reducer 2. The rotary actuator 1 rotates according to a command value out of a servo control system. The rotation is relatively high speed and decelerated by the speed reducer 2 with the specified reduction gear ratio. The first rotation detector 40 detects the turning angle of the output shaft 5 decelerated, and the detected result is outputted to the servocontrol system which performs feedback control over the rotary actuator 1 on the basis of errors between output information out of the rotation detector 40 and the command value.

Nuclear fuel assembly comprising two-diameter fuel rods

Abstract: A two-diameter fuel rod (R) is disclosed having a large diameter bottom tube (24) for holding a column of corresponding large diameter fuel pellets (60) at the fuel rod bottom, a smaller diameter top tube (22) for holding correspondingly smaller diameter pellets (51) at the top of the fuel rod, and a reducer (26) situated between the top (46) of the large diameter lower fuel tube (24) and the bottom (44) of the smaller diameter upper fuel tube (22). The lower column of larger diameter fuel pellets (60) is supported at its lower end on a spring (68) and biased at its upper end directly against the reducer (26); the upper column of smaller diameter fuel pellets (51) is supported at its upper end as close as possible to the underlying large diameter fuel pellets. Both tubes (22,24) are conventionally sealed and constructed at their distal ends from the bell reducer (26). Various kinds of reducer sections are disclosed. These reducer sections include a bell reducer of solid metallic construction, a tapered cladding tube, and, finally, telescoping cladding tubes welded together. There results a fuel bundle which has a uniform distribution of fuel and coolant with resultant uniform critical power response, no regions of nonuniform vapor flow, and improved flow area in the upper two-phase region of the bundle.

Centre driving type ball mill

Abstract: The utility model provides a centre driving type ball mill. The external gear pair periphery gearing of the existing ball mill is changed to centre driving of the same level shaft line, a planet gear speed reducer substitutes the existing cylinder gear speed reducer, a hydraulic coupling substitutes the existing dowel pin coupling, and a rolling bearing substitutes the existing sliding bearing. Thus, the zero load starting of the main motor of the ball mill is realized. The transmission efficiency of the ball mill is enhanced, the starting performance is improved, the energy consumption is lowered, and the noise is reduced.

Hand holding electric grease gun

Abstract: The utility model relates to a hand holding electric grease gun, which used as a tool for filling grease for automobiles, tractors, and various machinery. The utility model is a hand holding electric tool comprising a single-phase series motor, a speed reducer, a crank shaft, a connecting rod, a plunger case, etc.

Control method of dynamic vibration reducer device for building

Abstract: PURPOSE:To utilize the capacity of a dynamic vibration reducer at all times, and to inhibit vibrations extremely by installing a dynamic vibration reducer device enabling active control by an actuator and changing over control systems at three stages by the extent of the disturbance of a wind and an earthquake. CONSTITUTION:Added mass M13 is placed on the floor face 3 of the uppermost layer of a building 2 movably in the horizontal direction, and a spring 42 working in the horizontal direction, a damper 43 and an actuator 44 are interposed between a fixing member 41 unified with the floor face 2 and the added mass M13, and driven by the control of a control circuit 18, thus forming an active dynamic vibration reducer. The control circuit 18 adopts three kinds of control systems on the basis of the detecting signal of a vibration sensor 17 mounted to the ground 1, and complete active control is conducted in a weak shock of an earthquake of the 3rd degree of earthquake intensity or less, model matching control in a middle shock of the earthquake from the 3rd degree to the 5th degree and displacement is controlled in a severe shock of the earthquake of the 5th degree or more respectively.

Speed reducer transmitted by harmonic chain

Abstract: The utility model relates to a speed reducer driven by harmonic chains, which belongs to a mechanical driving mechanism. The utility model adopts the theory of harmonic chain transmission, and uses a wave generator (1) to impulse a flexible intermediate member (2) to do movements on a rigid wheel (3) to drive a central wheel (4) to rotate. The utility model overcomes the drawbacks of the easy fatigue and easy damage of a flexible gear in a harmonic gear speed reducer, and improves the service life and the safety of the flexible gear. The utility model also causes a driving leading device to be very simple, and the energy loss is small. The utility model is suitable for various situations with high-power transmission, or is suitable for accurate mechanical transmission devices with small volume and the request of high transmission accuracy and efficiency.

Linear dc motor

Abstract: PURPOSE:To relax the speed unevenness by motor thrust ripple so as to enable the driving excellent in constant velocity by attaching a dynamic vibration reducer, which has the torsional vibration system where torsional resonance frequency accords with the vibration frequency by motor thrust ripple, to a needle, and setting the resonance frequency of the torsional vibration system optionally. CONSTITUTION:A dynamic vibration reducer 19 is constructed by attaching a vibrator 20 having moment of inertial J in inertial moment to the A point of a needle 16 through a plate spring 21 of C in spring constant, and performs torsional vibration around the A point. However, since the shifting speed V of the needle 16 and the cycle a of thrust ripple are obvious at the time of design of a motor, the constants J and C of the dynamic vibration reducer 19 are so designed that the resonance frequency omega2 of the torsional vibration system may be omega2 =2pi v/a=(C/J) =(k2/m2) . Hereby, the speed unevenness caused by the thrust ripple of a linear DC motor 11 can be negated. Furthermore, it is possible to set the values of J and C so that the above formula may materialize by varying the position of the attachment of the vibrator 20, so constant velocity can be secured even at speed change control of a motor.

Movable-gear push-rod speed reducer

Abstract: The speed reducer has a set of shock devices driven by the rotary input shaft. The movable-gear push rod on the holder produces radial motion under the effect of the shock devices, and it meshes with a set of gear rings fixed on the shell and thus drives the movable-gear push-rod holder to produce reduced output rotation. There are two kinds of shock device structures, eccentric wheel and planetary mechanism. The movable-gear push-rod holder consists of several pancake parts. The said reducer may be widely used.

Pulverizer with changeable roller tooth

Abstract: The utility model relates to a pulverizer with changeable roller teeth, which is used for primary mud pulverization during the fabricating process of red bricks. The utility model is composed of a base, a roller cover, a motor, a belt pulley, a belt of the belt pulley, a speed reducer, a shaft coupling, a bearing seat, a bearing of the bearing seat, a toothed roller, a gear, a spring, a spring seat and a supporting rod. The utility model is characterized in that firstly, because the utility model uses the single driving mode of the motor matched with the speed reducer, compared with the unilateral driving mode of two motors matched with two speed reducers in an original invention, the utility model saves equipment investment and has the advantages of small volume, small space occupation, reduced transmission loss and electricity saving; secondly, after teeth of a toothed plate are abraded, rollers which can not be disassembled easily do not need to be disassembled, the whole toothed roller does not need to be replaced, only the toothed plate needs to be replaced, and the utility model has convenient maintenance; thirdly, the utility model has high efficacy and can pulverize mud with the humidity of 24%, and thus, the utility model does not need to be stopped in rainy days.

Planetary differential gear speed reducer

Abstract: The utility model relates to a planetary differential gear speed reducer, wherein, the housing is composed of a box body, a coupling flange, and an end cover, a motor is fixed to the coupling flange through a bolt, the inner transmission is composed of two parts of a planetary gear transmission and a differential gear transmission, and the input shaft is connected with the duplex sun wheel. In the planetary gear transmission part, the planetary frame is fixed to the housing of the speed reducer, the sun wheel drives the duplex internal gear to rotate through the planetary wheel, and a component velocity is formed; in the differential gear transmission part, the sun wheel and the duplex internal gear are engaged with the planetary wheel simultaneously to carry out composition of velocity, and the compound speed can be output through an output shaft with a planetary frame.