Showing papers on "Reducer published in 1990"

Motorized conveyor roller

Abstract: A motorized conveyor roller is mounted in a conveyor frame to support and propel articles from one end of the conveyor path towards the opposite end The conveyor roller includes a roller tube rotatably mounted in the conveyor frame and a drive means contained inside the roller tube for driving the roller tube The drive means includes a motor; a gear reducer assembly operatively connected to the motor; and a drive member connected to the output shaft of the speed reducer for engaging and rotating the roller tube The drive member preferably includes an elastomeric means for frictionally engaging the inner wall of the roller tube, and a clutch means adapted to slip at a predetermined torque to protect the motor and gear reducer assembly from torque overload

Use of a water soluble drag reducer in a water/oil/gas system

Abstract: The friction loss in a conduit flowing a mixture of water, oil and gas is reduced by injecting into the mixture a water soluble friction reducing polymer.

Analog/digital converter configuration with sigma-delta modulators

Abstract: An analog/digital converter configuration includes sigma-delta modulators being triggered by an analog input signal and emitting digital output signals at a predetermined sampling rate. The sigma-delta modulators have input circuits with amplification factors. Amplifiers are each connected upstream of a respective one of the sigma-delta modulators. First sampling rate reducers are each connected downstream of a respective one of the sigma-delta modulators. Damping elements are each connected downstream of a respective one of the first sampling rate reducers. Each of the damping elements have a damping factor equal to the inverse of the amplification factor occurring in the input circuit of a corresponding one of the sigma-delta modulators. A priority logic is connected downstream of the damping elements. A second sampling rate reducer is connected downstream of the priority logic. An output is connected downstream of the second sampling rate reducer. The priority logic switches a signal from the first sampling rate reducers to the output after evaluation of signals from the first sampling rate reducers.

Verticle type cycloidal pin-wheel planetary reducing gears for pot

Abstract: The utility model relates to a vertical type cycloidal pin-wheel planet speed reducing device for pots, which belongs to the class of a speed reducer of a driving device and is characterized in that an output shaft and an outlet shaft flange form a separation type, and the output shaft is connected with a supporting frame through a ball bearing and a conical roller bearing The utility model has the advantages of high efficiency, compact structure, small size, low failure rate, high overloading capacity, long service life, etc, and besides, the speed reduction ratio of the utility model is higher than that of the existing cycloidal pin-wheel speed reducers The utility model also has the characteristics of simplified structure, easy fabrication, little vibration, light weight, low cost, easy installation, easy maintenance, etc The utility model is mainly used for the mixing transmission of upright chemical industry containers and can also be used for smelting, petroleum, spinning, printing, dyeing, food, etc to make speed reduction movement

Control device for industrial robot

Abstract: PURPOSE:To prevent the breakdown of a robot arm and speed reducer by providing an estimator estimating the acceleration and loading torque of a robot arm and providing a comparator comparating each acceleration estimation value and load torque estimation value, generating a motor free control signal based on the result thereof and giving it to a breaker. CONSTITUTION:The acceleration of a robot arm 5 is estimated by an acceleration estimator 9 and also a load torque applied on the robot arm 5 is estimated by a load torque estimator 8. These estimation values are then compared by a comparator 10 and in case of an abnormality being generated on the robot arm 5 a motor free control signal is transmitted to a breaker 2 from the comparator 10 by detecting this abnormality immediately. The input voltage to a servo motor 3 is cut off by the breaker 2 based on this signal, the servo motor 3 is made in a free state and the breakdown of the robot arm 5 and a speed reducer 4 is prevented.

Drag reduction method for gas pipelines

Abstract: A method of reducing drag (friction) of a gas (e.g. natural gas) flowing in a gas pipeline at a constant pressure drop between a first point and a second point. The gas flowrate is monitored at the second point as a drag reducer is injected into the gas flow at the first point. The injection rate of the drag reducer is adjusted to provide the maximum flowrate at the second point with the minimum amount of drag reducer. The excess drag reducer is removed from the gas flow at the second point and monitored. Once the maximum flowrate is stabilized, the injection rate of the drag reducer is adjusted to approximately the same rate as any excess drag reducer is being removed at said second point.

Multi-configuration gear reducer kit

Abstract: A gear reducer kit has one shaft mounted in a rotatable quill which rotates along an axis offset from the shaft axis. The quill may be fixed with respect to the gear reducer at one of several discrete index position, each associated with a different input pinion gear corresponding to the distance between the shaft and an idler gear. A flange rim guides the rotation of the quill mode with respect to the housing. The idler gear is opposed to the mounting base of the gear reducer with respect to the shaft to permit spacing plates to be added to adjust the mounting spacing.

Combined hydraulic motor and speed reducer

Abstract: A combined hydraulic motor and speed reducer intended to improve the service life of sealing members and bearings by cooling lubricating oil within a speed reducer case. The hydraulic motor includes a motor case (1) having a peripheral surface in which a pair of supply/discharge ports (18, 17) are formed in a diametrically opposite relationship and extend axially from one end of the motor case (1) so as to open to a speed reducer case (6). Cool lubricating oil is supplied to the interior of the speed reducer case, and at the same time, high temperature lubricating oil is discharged out of the motor. In this way, the lubricating oil within the speed reducer case is maintained at low temperature.

Film peeling method and apparatus for practicing same

Abstract: A film peeling apparatus is disclosed wherein a base plate stuck with the films is conveyed to a film peeling position, where a contact tightness of leading edges of the films to the base plate is reduced by a film contact tightness reducer while relative moving speed of the base plate and the reducer is decreased by slowing down the conveyance speed of the base plate or by moving the reducer in synchronism with the conveyance of the base plate without stopping the conveyance of the base plate.

Mechanically-driven device for butt-welding of steel tube

Abstract: The utility model discloses a mechanically-driven device for butt-welding of a steel tube, which is composed of a steel pipe conveying system, an assembling and pressing system, and a rotating and driving system. The steel pipe conveying system comprises two suites of driving and elevating mechanisms, and the assembling and pressing system comprises an assembling and adjusting mechanism and a pressing and positioning mechanism; the rotating and driving system is composed of a motor, a speed reducer, a chain, a chain wheel, a rotating roller, and a driving shaft. The systems can be controlled to cooperate with each other through a control panel on an operation table, and multiple functions such as steel pipe feeding, assembling, positioning, rotating, conveying, etc.; besides, the welding process quality and efficiency can also be improved. The device can be suitable for various pipe diameters and welding methods.

Planetary gear speed reducer

Abstract: PURPOSE: To protect a speed reducer from damage and extend the life thereof by employing structure in which a first stage of a planetary gear speed reduction device is housed in the inner circumference of a motor shaft, thereby reducing the projection amount of the speed reducer from outside end surfaces of right and left crawler belts. CONSTITUTION: A speed reducer comprising a motor shaft 2, and a drive wheel hub 16 fitted via a bearing on the outer circumference of the motor shaft 2 and rotating at a speed reduced with the planetary gear speed reduction device is provided with a first stage planetary gear speed reduction device in the inside periphery of the motor shaft 2. Because in this structure the first stage planetary gear speed reduction device is housed in the motor shaft 2 of an increased size due to the increase in the size of the drive wheel hub 16, the dead conventionally existing between hydraulic motor and planetary gear speed reduction device is effectively used to arrange the planetary gear speed reduction device. As a result, the overall length of the speed reducer is contracted and the projection amount of the speed reducer from the side surfaces of the crawler belt is reduced. COPYRIGHT: (C)1992,JPO&Japio

Speed-reducer of resilient cycloidal pin gear

Abstract: The utility model relates to a speed reducer of an elastic pin tooth cycloidal pin gear for power transmission. In the speed reducer, a traditional pin gear is changed into an elastic pin tooth pin gear of which the whole tooth length of the elastic pin tooth is contacted with a circular arc groove of a pin tooth shell. When the pin gear works, the elastic pin tooth has no axial bending stress; the elastic pin tooth can easily generate greater radial elastic deformation in engagement, and an effect that the maximum contact stress of the tooth surface is reduced is performed. The pin gear has the advantages of simple structure, easy fabrication and low cost; the single-stage speed ratio is from 09 to 87; the carrying capacity can be further improved by increasing the thickness of the cycloidal gear or adopting a form that multiple sheets of cycloidal gears are used, and a speed reducer of which the power is greater than 150KW can be easily manufactured.

Device for transmitting a driving torque for a motor vehicle driving wheel with a rolling-contact bearing and a speed reducer which are built into the wheel

Abstract: The present invention relates to a speed reducing device placed in a driving wheel, for example of a motor vehicle. The device in accordance with the invention is made up so that a speed reducer (12) is entirely built into a rolling-contact bearing and comprises a fixed ring gear (17) cut from an outer race (ring) (5) of the bearing, spider gears (13) being left, on the one hand, with the said fixed ring gear (17) and, on the other hand, with a planet pinion (14), these spider gears (13) being respectively mounted so that they can rotate between two bearings (23, 24) of a support (6) connected to the wheel rim (1) and formed by the inner race (ring) (56) of the bearing. This device applies to the manufacture of transmission devices for motor vehicles of any type.

Body structure for industrial robot

Abstract: PURPOSE:To easily and efficiently perform maintenance and check of a motor and its reducer without removing a body or its upper structure body by installing the motor and its reducer removably from above on each upper face of shelf parts and a bottom wall of a lower body through an opening of an intermediate body connecting the upper and lower bodies. CONSTITUTION:A body 11 consists of a lower body 14 being concentric with axis of an output shaft 50 of a motor 22 and an upper body 16 supporting an upper structure body 20 which relatively operates relative to the lower body, and being eccentric with axis of the lower body. On the upper part of an intermediate body 18 connecting the upper body 16 to the lower body 14, an opening part 42 is formed. Through the opening part 42, a motor 22 and a reducer 24 are installed removably on each upper face of shelf parts 32 and a bottom wall 30 of the lower body 14 with screws 40, 46. As a result, the motor and the reducer can be easily and efficiently removed and checked, then carried in and installed through the opening without removing the body and its upper structure body 20.

Steel pipe straightening and derusting machine

Abstract: The utility model relates to a metal round pipe straightening and derusting machine, composed of a machine body (1), a conveying grooved pulley group (5), a straightening grooved pulley group (18), an adjusting grooved pulley group (26), a steel brush cleaner (27), and a power unit which is composed of a main and a subsidiary motors which are arranged on a base (3), and a speed reducer. The utility model has the advantages of simple structure, low cost, reliable use, one machine with two purposes, and wide applicability, and is used for straightening a bending metal round pipe and eliminating the external rust.

Connection part for metallic-pipe covered optical fiber and connecting method therefor

Abstract: PURPOSE: To prevent transmission characteristic from deteriorating and to secure high mechanical strength by previously performing diameter machining for part of an end part of a sleeve pipe which has an internal diameter matching the external diameter of a metallic pipe, connecting the optical fiber and then reducing the diameter of a remaining diameter-unreduced part by extension until its internal diameter equals the internal diameter of the metallic pipe, and welding the metallic pipe CONSTITUTION: The diameter reduction machining the performed from a position which is 25mm away from one end to the sleeve pipe 3 to a position which is 50mm away, and parts of metallic pipes 2 and 2 from their terminal to positions which are 650mm away are cut and removed to expose optical fibers 1 and 1 The opposite side of reducer part 3A the pipe 3 is fitted onto the outer periphery of the end part of one pipe 2 and after the terminals of the optical fibers 1 and 1 are connected by fusion splicing and recoated with resin, the pipe 3 is drawn back from the state in Figure 2 to Figure 3 and welded to the metallic pipe 2 Then a half-split die 11 is fitted to the reducer part 3A and moved and the other end of the pipe 3 is reduced in diameter except part of it and welded Thus, the pipes 2 and 3 become nearly equal in internal diameter and a connection part which has a discontinuous step part is formed COPYRIGHT: (C)1992,JPO&Japio

Pressure reducer which can be neutralised

Abstract: The pressure reducer is designed to permit the filling or the rinsing of a bottle with a gas and to permit the drawing off of this gas at a stable and lower pressure. In order to permit filling of the bottle through the pressure reducer, a detent piston (28) is actuated with the aid of an axial stem (60) in order to block the closure member in an open position.

End-face waving gear reducer

Abstract: A rotational transmission reducer having plane waving gear mechanism comprises at least a reducer unit of an input member, an output member, and a plane flexible member which lays between the input member and the output member. The reducer unit may be coaxially piled to be a multistage reducer. A typical example is a transmission of a clock or a watch, which can simplify a conventional mechanism and lower the manufacturing cost. The reducer unit functions by some salient portions on the input member pushing the flexible member, to engage a part of a ring gear furnished on the flexible member with another ring gear furnished on the output member. The output member is rotated by differential pitches of aforesaid two ring gears. For a clock or watch transmission, the ring gear on the output member is an independent member joined frictionally with a substance of the output member so that they can be slid relatively for time adjustment.

Cycloid planetary speed reducer

Abstract: The utility model relates to a novel cycloid speed reducer which integrally combines two epicycloidal wheels and uses an oiliness bushing to replace a rolling bearing of a rotary arm, and an output mechanism of which the hypocycloid and the epicycloidal wheels are engaged replaces a traditional pin shaft type output mechanism. Accordingly, the utility model has the advantages of simple structure, small size and light weight; as the sliding friction of an ordinary epicycloid speed reducer is changed into rolling friction, the transmission efficiency is improved; in addition, the secondary speed reduction of a planet and the hypocycloid wheel is realized because of the improvement of the output mechanism, and the transmission speed ratio is increased. The utility model is suitable for a transmission and a control devices having small volume, light weight, etc. for robots, mechanical arms, etc.

Spot welding machine

Abstract: PURPOSE:To change directions of electrodes along with a welding machine main body by transmitting torque of a gear fixed on a welding machine to a pinion via a speed reducer and meshing the pinion with the gear to make the welding machine main body freely rotatable. CONSTITUTION:A gear case 4 is always suspended by an eyebolt 7 via a free- weight balancer to support the weight of the above-mentioned welding machine 1. The welding machine 1 main body is then fixed on the gear 3 via a connecting plate 8 and the gear 3 is meshed and rotated by rotation of the pinion 10 direct-coupled with an output shaft 5a by rotation of a handle 6 of the speed reducer 5. Accordingly, the welding machine 1 main body is rotated by rotational movement of the gear 3 and angles of the electrodes 14 and 15 are changed freely. As a result, when the handle 6 is rotated manually, the angles of the electrodes 14 and 15 are changed arbitrarily. In addition, when the rotation of the handle 6 is stopped, the gear 3 is positioned by interposing the speed reducer 5 and a lock lever 9.

Auger preboring method by self-travelling small pile-driver

Abstract: PURPOSE:To aim at improving operation efficiency by providing a speed reducer detachably fitted against the power take-off shaft of an auger driver to be connected directly with an auger. CONSTITUTION:Normally, the upper end of a spiral auger is directly connected with the power take-off shaft 11 of an auger driver 1 without a speed reducer 2. In case of the ground with adverse condition such as hard ground, the upper end of the auger 3 is connected with the output shaft through the speed reducer 1 so as to reduce the engine speed of the auger driver approximately by half, and thereby the thrust of an auger head into the ground is improved. Accordingly, profitability is also improved.

Tripodal filter centrifuge with screw discharging

Abstract: The utility model relates to a tripodal filter centrifuge with screw discharging, which is used for the full-speed automatic continuous separation of the components of the solid and the liquid of suspension and emulsion. The planetary wheel and the cycloidal pin-wheel speed reducer of the present filter centrifuge with screw discharging have complicated structure, bulkiness and high cost, and the present centrifuge is easy to generate low-frequency resonance with foundation to jeopardize workshops. The design discards complex speed reducers; the single machine drive adopts two pairs of gears to realize the micro speed difference between a screw doctor and a rotary drum, eliminating the low frequency resonance, and delaying the operating speed of liquid separation of material with thorough liquid separation; the doctor and the rotary drum have small height and the entire machine has compact structure and easy production. The machine of the utility model is suitable for departments of petroleum, light industry, chemical engineering, foodstuff and environmental protection.

System for controlling torque of motor

Abstract: PURPOSE:To perform highly precise torque braking by providing a current feedback loop and a torque feedback loop to control the generated torque of a motor in a system the load is operated through a speed reducer. CONSTITUTION:A torque detector 5 is provided to an output shaft of a speed reducer 11 to constitute a torque control loop outside the current feedback. A torque detection signal is then differentiated and by multiplying by a specified coefficient (kO), it is added to the loop. In order to compensate the nonlinearity of a spring constant, a compensatory characteristic corresponding to the torque is added to kO. This can solve both the improvement on damping and the compensation of friction torque.

Vibration damping device of rotary compressor

Abstract: PURPOSE:To obtain a sufficient vibration damping effect even if the rotating frequency is changed by fixing one end part of a tension coil having leg parts extending at right angles to the winding central axis from the both end parts of the winding to the fixture of a sealed case having a compressing element part and an electric motor part contained therein, and the other end part to an inertial body. CONSTITUTION:A sealed case 2 is vibrated by the operation of a compressor, but by vibrating the inertial body 15 of a dynamic vibration reducer 14 in the opposite phase to the vibration of the sealed case 2, the vibration of the sealed case 2 is damped. A connecting part 16 is formed of a tension coil spring having initial tension and arm parts 16a, 16b. When a space is formed between windings, bending rigidity is changed and the peak width of the natural vibration of the dynamic vibration reducer 14 is widened, causing damping effect. Therefore, the peak width of the maximum damping frequency is widened, and vibration damping effect can be obtained in a wide frequency band. Notch parts 17b, 15b and projection parts 17c, 15c are provided on the top ends of the protruding parts 17a, 15a of a fixture 17 and the inertial body 15, respectively, whereby the natural frequency of the dynamic vibration reducer 14 can be stabilized.

Vehicle blocking device

Abstract: The utility model discloses a vehicle blocking device for the end of the stub-end siding of a railway, belonging to a safety protection device, which comprises a braking reduction gear and a damping device. The braking device is arranged with a braking speed reducer, and a back part is arranged with braking clamps from two to six. Both sides of the braking speed reducer are respectively provided with a clamping device; the middle is arranged with braking blocks, the front part is arranged with set-up springs. The vehicle blocking device can block a sliding vehicle and has the advantages of simple structure, convenient maintenance, safe transportation, and safe production.

Bicycle tractive machine

Abstract: The utility model relates to a bicycle tractive machine which belongs to the technical field of transmission line construction equipment. A speed reducer is installed on the back part of the gear box of a tractor, and the speed reducer is provided with two hoisting drums with circular arc-shaped wiring troughs and a capstan. The gear box of the tractor improved in order to make kinetic force be transferred to the speed reducer through four levels of speed changing and to drive the hoisting drums and the capstan to rotate. The utility model has the advantages that the tractive property of the bicycle tractive machine is combined with the walking property of the tractor. The bicycle tractive machine uses one power source, is convenient and safe to be used and moved during wiring, and can complete mechanized wire releasing and collecting with high work efficiency. The utility model can also be used as a tractive machine or a transporting machine, and the cost is low. Electric utility department can purchase the bicycle tractive machine.

Digital noise feedthrough reducer and synchronizer for mixed-signal integrated circuit

Abstract: A solution to the problem of analog decision making in a "mixed-signal" integrated circuit removes pulses of the local clock from the analog decision trigger whenever chip select is active, thereby freezing the mixed-signal circuit while it is accessed.