Showing papers on "Reducer published in 2015"

Integrated driving device for new energy vehicle

Abstract: The invention discloses an integrated driving device for a new energy vehicle. Through integrated design, a driving motor, a speed reducer and a differential mechanism are integrated, a shell is shared by the driving motor, the speed reducer and the differential mechanism, a motor shaft serves as not only an output shaft of the driving motor but also an input shaft of the speed reducer, the speed reducer comprises a first-level speed reduction gear set and a second-level speed reduction gear set, a differential mechanism shell is connected with a second-level speed reduction gear, a half axle gear in the differential mechanism is coupled with a vehicle half axle spline, and therefore power generated by the integrated driving device is transmitted to wheel hubs, and the vehicle is driven to run. The integrated driving device for the new energy vehicle is compact in structure and high in integration level, the number of parts is reduced effectively, axial dimensions are shortened, the weight of an assembly is reduced, and the layout flexibility of a power system of the whole vehicle is greatly improved.

Liquefied natural gas production method and complex for its implementation

Abstract: FIELD: oil and gas industrySUBSTANCE: liquefied natural gas production method according to which incoming gas flow is treated from impurities and compressed until it is separated into process and production flows The process flow is passed through a reducer valve equipped with gas turbine, which torque is used for compression of the incoming gas flow until it is separated into process and production flows The process flow is treated from impurities of heavy hydrocarbons by their condensation in a nozzle block of the reducer valve, which is made of heat-conductive material Liquid phase is supercooled before pumping to the consumer's tankEFFECT: improved productivity at reduced energy consumption7 cl, 1 dwg

Measuring instrument for comprehensive performances of RV (rot-vector) reducer

Abstract: The invention relates to a measuring instrument for comprehensive performances of an RV (rot-vector) reducer and belongs to the technical field of precision testing and metering. The measuring instrument comprises two major parts, wherein a mechanical part mainly comprises a precision mounting support of the RV reducer, an input shaft system, an output shaft system, a torque motor, a shaft coupling, a torque sensor, a magnetic powder brake and a brake mounting support; a measuring and controlling part mainly comprises the torque motor, a controller, a driver, an encoder, a subdivision device, a DSI (digital speech interpolation) card, a data acquisition card and an industrial personal computer. The measuring instrument provided by the invention fills in the blank in testing tables for the comprehensive performances of the RV reducers at home and abroad, and has the advantages of reliable performances, good measurement repeability and accurate measured parameters.

Commutativity of Reducers

Abstract: In the Map-Reduce programming model for data parallel computation, a reducer computes an output from a list of input values associated with a key. The inputs however may not arrive at a reducer in a fixed order due to non-determinism in transmitting key-value pairs over the network. This gives rise to the reducer commutativity problem, that is, is the reducer computation independent of the order of its inputs? In this paper, we study the reducer commutativity problem formally. We introduce a syntactic subset of integer programs termed integer reducers to model real-world reducers. In spite of syntactic restrictions, we show that checking commutativity of integer reducers over unbounded lists of exact integers is undecidable. It remains undecidable even with input lists of a fixed length. The problem however becomes decidable for reducers over unbounded input lists of bounded integers. We propose an efficient reduction of commutativity checking to conventional assertion checking and report experimental results using various off-the-shelf program analyzers.

Feeding conveying device for processing wood board

Abstract: The utility model relates to a feeding conveying device for processing a wood board. The feeding conveying device comprises a pedestal, two supporting frames, a first speed reducer, a second speed reducer, a first air cylinder, uprights, a top frame, a third speed reducer, a rack and a second air cylinder, wherein two leading screws are installed in each supporting frame, the first speed reducer drives the leading screws, and a lifting baseboard is installed on four leading screws; a horizontal pushing cylinder is installed at the top of the head-end supporting frame, and a detecting probe is arranged at the bottom, and a carrier roller is installed at the top of the tail-end supporting frame; the second speed reducer drives each carrier roller to rotate, a substrate is installed at the top of the tail-end supporting frame, the first air cylinder is installed on the substrate, and multiple compression rollers are installed at the bottom of a piston rod; a feeding roller is arranged on the head end of the top frame, a lateral movement roller is arranged on the middle part, and a discharge roller is arranged on the tail end; the lateral movement roller comprises a mandrel and a spiral rubber roller body; the third speed reducer drives each rotating shaft and the mandrel; multiple lateral movement rollers are installed at the bottom of the piston.

Numerical Analysis and Demonstration: Transmission Shaft Influence on Meshing Vibration in Driving and Driven Gears

Abstract: The variable axial transmission system composed of universal joint transmission shafts and a gear pair has been applied in many engineering fields. In the design of a drive system, the dynamics of the gear pair have been studied in detail. However few have paid attention to the effect on the system modal characteristics of the gear pair, arising from the universal joint transmission shafts. This work establishes a torsional vibration mathematical model of the transmission shaft, driving gear, and driven gear based on lumped masses and the main reducer system assembly of a CDV (car-based delivery vehicle) car. The model is solved by the state space method. The influence of the angle between transmission shafts and intermediate support stiffness on the vibration and noise of the main reducer is obtained and verified experimentally. A reference for the main reducer and transmission shaft design and the allied parameter matching are provided.

Dynamic modeling and motion precision analysis of spacecraft manipulator with harmonic drive considering the alternate thermal field in orbit

Abstract: Nowadays, the harmonic drive is widely used as the reducer in the spacecraft manipulator, which may influence the dynamical properties of flexible spacecraft manipulator. The alternative thermal en...

Efficiently Detecting Races in Cilk Programs That Use Reducer Hyperobjects

Abstract: A multithreaded Cilk program that is ostensibly deterministic may nevertheless behave nondeterministically due to programming errors in the code. For a Cilk program that uses reducers, a general reduction mechanism supported in various Cilk dialects, such programming errors are especially challenging to debug, because the errors can expose the nondeterminism in how the Cilk runtime system manages a reducer. We identify two unique types of races that arise from incorrect use of reducers in a Cilk program and present two algorithms to catch them. The first algorithm, called the Peer-Set algorithm, detects view-read races, which occur when the program attempts to retrieve a value out of a reducer when the read may result a nondeterministic value, such as before all previously spawned subcomputations that might update the reducer have necessarily returned. The second algorithm, called the SP+ algorithm, detects determinacy races, instances where a write to memory location occurs logically in parallel with another access to that location, even when the raced-on memory locations relate to reducers. Both algorithms are provably correct, asymptotically efficient, and can be implemented efficiently in practice. We have implemented both algorithms in our prototype race detector, Rader. When running Peer-Set, Rader incurs a geometric-mean multiplicative overhead of 2.32 over running the benchmark without instrumentation. When running SP+, Rader incurs a geometric-mean multiplicative overhead of 16.76.

Bionic drilling liquid and preparation method thereof

Abstract: The invention relates to the field of drilling liquids, and discloses a bionic drilling liquid and a preparation method thereof. The bionic drilling liquid contains a specific bionic wall-reinforcing agent, a bionic shale inhibitor, a filtrate reducer and an amphipathic reservoir protector, wherein the filtrate reducer at least contains microcrystalline cellulose. The bionic drilling liquid provided by the invention is capable of effectively solving the problem of borehole instability, and great in industrial application prospect.

Automobile safety air bag steel pipe production line

Abstract: The invention relates to an automobile safety air bag steel pipe production line A steel bar equal-length breaking machine adopts an automatic equal-length opening cutting method, and is used for breaking a steel bar; a straightening machine is additionally provided with a safety material delivery roll; a detection machine adopts a low-frequency eddy detection device and a high-frequency eddy detection device; the detection machine is provided with two discharging devices with structures that a discharging rod is inserted into an U-shaped groove hole in a sleeving way, a discharging arm and a rotary arm are fixedly arranged on each discharging rod, the other end of each rotary arm is hinged to a piston rod of a discharging air cylinder, a support roll is arranged on each discharging bracket, a receiving cloth belt bypasses a support rod and is wound on a receiving and discharging cloth roll, a roll shaft of each receiving and discharging cloth roll is fixedly connected with an output shaft of a gear reducer, an input shaft of each gear reducer is fixedly connected with a rotary shaft of a discharging motor, and the two discharging devices are symmetrically arranged at the two sides of a conveying roller The automobile safety air bag steel pipe production line has the advantages that the steel bar equal-length breaking machine has a high automation degree; the steel pipe straightening machine adopts the rubber roll to deliver the material, so as to avoid the safety accidents; the detection mechanism adopts the semi-automatic charging method, so the manual labor intensity is decreased, and the surface and the inner wall of the steel pipe can be simultaneously detected

Speed reducer for stir driving

Abstract: The invention discloses a speed reducer for stir driving The speed reducer comprises a gear box (1) and a driving motor (2) positioned on the gear box (1), wherein a motor shaft hole (3), a variable stage shaft hole (4), a third shaft hole (5) and an output shaft hole (6) are formed in the gear box (1); the distance between the axial center line of the motor shaft hole (3) and the axial center line of the third shaft hole (5) is equal to the distance between the axial center line of the variable stage shaft hole (4) and the axial center line of the third shaft hole (5), so that transmission of the driving motor (2) to an output shaft (12) in the output shaft hole (6) is in two stages or three stages The two-stage speed reduction or three-stage speed reduction of the speed reducer is conveniently converted, a clamping spring fixing bearing is adopted, the speed reducer can be directly connected with a stirring shaft for bearing an axial stirring load and a radial stirring load, and zero leakage of lubricating oil is realized by virtue of the design of a static oil isolating cylinder; moreover, by virtue of the standardization design of all parts, the production cost is reduced

RV reducer transmission feature test system

Abstract: The invention relates to a test device, in particular to an RV reducer transmission feature test system which comprises a base. An RV support, a torque sensor and a loading device are arranged on the base. The RV support is provided with a mounting hole. The mounting hole is detachably provided with a connection plate for arranging an RV reducer to be tested. The two sides of the connection plate are each provided with an angular displacement sensor matched with an input shaft and an output shaft of the RV reducer to be tested. The torque sensor is used for detecting the torsional moment of the RV reducer to the tested. The loading device is used for controlling the load of the RV reducer to be tested. The RV reducer transmission feature test system is simple in structure and high in measuring accuracy, and the object to be tested is easy and convenient to replace.

Fixing bracket of sprinkler

Abstract: The present invention provides a fixing bracket of a sprinkler for safely fixing and easily mounting and separating a reducer of a sprinkler. The fixing bracket has a body having holes for mounting the reducer, and a pressing lever pressing the bar to bring the bar in contact with the reducer in a space inside the body, in which the body has a pair of walls facing each other and having the holes, respectively, and a bridge connecting the walls, and the pressing lever is turned around a hinge shaft at a first side of the body and presses the bar through an opening formed through the bridge when being turned.

Double-arm robot modularized joint with hollow structure

Abstract: The invention discloses a double-arm robot modularized joint with a hollow structure, belonging to the field of industrial robots. A mechanical arm is composed of seven similar modularized joints. The joint comprises an input device and an output device, wherein the input device comprises a hollow motor rotor, a rotor axial positioning ring, a third motor bearing, a hollow brake rotor, an O-shaped sealing ring, a motor stator mounting flange, a main transmission shaft, a motor rotor, a second motor bearing, a bearing pressing cover and a harmonic reducer wave generator; the output device comprises a joint output flange, a first output bearing, a mounting flange, an absolute value encoder rotor, a sealing bearing and a harmonic reducer steel wheel; the input device is connected with the output device by the mounting flange. The double-arm robot modularized joint has the advantages that the problems of robot products with more varieties, small batches and complicated structures can be solved; the load dead-weight ratio of the joint can be increased on the basis of meeting the conditions, and the rotation precision of the joint is improved.

Driving and control integrated type intelligent integration joint

Abstract: The invention discloses a driving and control integrated type intelligent integration joint, which comprises a joint output member, a harmonic speed reducer, a bearing seat, a joint outer casing, a motor body, a brake mechanism, a motor encoder, an integrated circuit module and a joint encoder. The driving and control integrated type intelligent integration joint has the advantages that the integration degree is high, the motor, the driver, the speed reducer and the sensor module needed by a robot joint part are integrated into the joint, and the size of the robot joint part is more compact at the premise of no overheat of the integration joint; an acceleration sensor is integrated into the integration joint, so the external impact force on the integration joint can be detected, and the advanced technique cannot be realized by the traditional industrial robot; an accurate current detector is integrated into the integration joint, and a controller algorithm is matched to realize the intelligent teaching demonstration function, and improve the human-machine interaction function.

Blood Flow Simulations for the Design of Stented Valve Reducer in Enlarged Ventricular Outflow Tracts

Abstract: Tetralogy of Fallot is a congenital heart disease characterized over time, after the initial repair, by the absence of a functioning pulmonary valve, which causes regurgitation, and by progressive enlargement of the right ventricle outflow tract (RVOT). Due to this pathological anatomy, available transcatheter valves are usually too small to be deployed there. To avoid surgical valve replacement, an alternative consists in implanting a reducer prior to or in combination with the valve. It has been shown in animal experiments to be promising, but with some limitations. The effect of a percutaneous pulmonary valve reducer on hemodynamics in enlarged RVOT is thus studied by computational modeling. To this aim, blood flow in the RVOT is modeled with CFD coupled to a simplified valve model and 0D downstream models. Simulations are performed in an image-based geometry and boundary conditions tuned to reproduce the pathological flow without the device. Different device designs are built and compared with the initial device-free state, or with the reducer alone. Results suggest that pressure loss is higher for the reducer alone than for the full device, and that the latter successfully restores hemodynamics to a healthy state and induces a more symmetric flow in the pulmonary arteries. Moreover, pressure forces on the reducer and on the valve have the same magnitudes. Migration would occur towards the right ventricle rather than the pulmonary arteries. Results support the thesis that the reducer does not introduce clinically significant pressure gradients, as was found in animal experiments. Such study could help transfer to patients.

Comprehensive test platform for industrial robot joint reducer

Abstract: A comprehensive test platform for an industrial robot joint reducer includes a bed body, a linear guide rail is laid on the right half part of the bed body, a magnetic powder brake connected with a left side end of the bed body is connected with a first torque sensor through a coupling, the first torque sensor is connected with a first angle encoder through a coupling, the first angle encoder is connected through an end-toothed disc with an output disc of a tested joint reducer installed in a special jig, the special jig is fixed on a movable platform, and the movable platform is mounted on the linear guide rail through sliding blocks; and a second angle encoder is mounted on an input shaft of the tested joint reducer, the input shaft of the tested joint reducer is connected with a second torque sensor through a coupling, the second torque sensor is connected with an output of a magnetic powder clutch through a coupling, and the magnetic powder clutch is fixed on the movable platform, and is connected with a spindle motor fixed on the movable platform through a coupling. The comprehensive test platform for the industrial robot joint reducer can realize testing of multiple parameters, and substantially improves testing efficiency.

Optimized assignments and/or generation virtual machine for reducer tasks

Abstract: The present disclosure relates to assignment or generation of reducer virtual machines after the "map" phase is substantially complete in MapReduce. Instead of a priori placement, distribution of keys after the "map" phase over the mapper virtual machines can be used to efficiently reducer tasks in virtualized cloud infrastructure like OpenStack. By solving a constraint optimization problem, reducer VMs can be optimally assigned to process keys subject to certain constraints. In particular, the present disclosure describes a special variable matrix. Furthermore, the present disclosure describes several possible cost matrices for representing the costs determined based on the key distribution over the mapper VMs (and other suitable factors).

6 -degree of freedom's industrial robot mechanical mechanism

Abstract: The utility model relates to a 6 -degree of freedom's industrial robot mechanical mechanism, including the base, waist gyration dish, big arm, the forearm connection pad, the forearm, the wrist part, the parts of base and waist gyration dish junction mainly include the base, the lumbar bearing seat, and roller bearing, the bearing inner race clamp plate, the waist connection pad, a motor gear, waist gyration dish, a motor abutment plate, a motor, big arm locating piece, central bearing lid, deep groove ball bearing, a speed reducer, fixed speed reducer input of base inner chamber center lower extreme, reducer output are held and are connected gradually lumbar bearing seat, waist connection pad, waist gyration dish, the waist gyration is faced left and is held through motor of a motor abutment plate connection, and a motor coils and turns around at the horizontal plane through a motor gear and a speed reducer input meshing, speed reducer drive waist gyration. The beneficial effects are that: simple structure, control is convenient, has satisfied the automated control demand.

Nano SiO2 composite material thickened oil viscosity reducer and preparation method thereof

Abstract: The invention discloses a nano SiO2 composite material thickened oil viscosity reducer and a preparation method thereof, which belongs to the technical field of nano SiO2 composite material preparation and application thereof. The viscosity reducer is nano (polymethacrylate higher alcohol-acrylamide)/SiO2 composite material. The preparation method comprises the following steps: 1)pre-modifying the surface of the nano SiO2 by a silane coupling agent; and 2)performing graft copolymerization of (methyl)acrylate higher alcohol and acrylamide on the surface of nano SiO2 to obtain the (polymethacrylate higher alcohol-acrylamide)/SiO2 composite material powder. The nano viscosity reducer has the advantages of good viscosity reducing effect, low cost, simple production and no pollution during a cleaning process. Through the experiment, the viscosity reducing rate of the nano viscosity reducer to the high wax thickened oil at Daqing dandong station is 72.10% at 40 DEG C.

Hybrid electric vehicle and drive control method thereof

Abstract: The invention discloses a hybrid electric vehicle which comprises a transmission device, an engine, a transmission, a motor, a reducer, a power battery and a controller, wherein the transmission device is used for driving wheels of the hybrid electric vehicle; the engine is connected with the transmission device by virtue of the transmission; the motor is connected with the transmission device by virtue of the reducer; the power battery supplies power to the motor; the controller controls the engine and the motor according to the operating modes selected by a user; the operating modes comprise a pure electric economic mode, a pure electric motion mode, a hybrid power economic mode and a hybrid power motion mode. According to the hybrid electric vehicle disclosed by the invention, the engine and the motor are connected in parallel, the economic performance is greatly improved under the condition that the whole vehicle dynamic property is guaranteed, the operability of a driver on the whole vehicle is reflected according to switch of the multiple operating modes, and the driving pleasure is improved. The invention also discloses a drive control method of the hybrid electric vehicle.

Punching and carrying manipulator

Abstract: The utility model discloses a punching and carrying manipulator. The punching and carrying manipulator comprises a frame, a chassis rotating mechanism and a horizontal moving mechanism connected with the same are arranged on the frame, the chassis rotating mechanism comprises a servo motor and a rotating device, the rotating device is connected with the servo motor through a rotary shaft, a speed reducer is connected between the rotary shaft and the servo motor, and the rotating device rotates along the horizontal direction under drive of the servo motor so as to drive the horizontal moving mechanism to rotate. The power transmission of the punching and carrying manipulator depends on screws, and any oscillating cannot occur during operation of the mechanisms; torque is increased by the speed reducer and can be increased by more than 30 times; repeated positioning gap error is 0.1 arc-min only. Meanwhile, the rotating mechanism further provides a degree of rotating freedom, so that use is more convenient, positioning is more accurate, machine and die investment can be saved by more than 40%.

A dimensional movement mixes quick-wittedly for producing BCAA

Abstract: The utility model discloses a production BCAA's dimensional movement mixes the machine, including left frame and right frame, be fixed with mixed hopper through the pivot between left frame and the right frame, a left side is provided with brake motor and speed reducer in the frame, and brake motor is connected with the speed reducer, and brake motor's top is arranged in to the speed reducer, the lower part of mixing the hopper is equipped with the baiting valve, be provided with the vibrator on the outer wall of mixed hopper, be provided with amplitude of oscillation sensor on the mixed machine the several connecting block is all installed to the bottom of left side frame and right frame, and the screw is offered at the middle part of connecting block, installation screw rod in the screw, and the cushion is installed to the lower extreme of screw rod, the bottom installation slipmat of cushion. The utility model discloses can adjust the whole height that mixes the machine, conveniently be used for the high-efficient wet-mixing granulator operating personnel who produces BCAA to use, the bottom installation slipmat of cushion, the utility model discloses can increase with place the platform's frictional force, avoid sliding on place the platform

Novel process for processing crankshaft

Abstract: The invention discloses a novel process for processing a crankshaft, which comprises steps: milling a center hole and lathing concentric reducers; b lathing a main shaft neck; c milling a connecting rod neck; d processing an oil hole; e medium-frequency hardening; f rolling a heavy Angle groove; g processing hole series arranged on the two ends; h finely grinding a thrust surface; I finely grinding the main shaft neck and the connecting rod neck; j finely grinding a big reducer; k finely grinding a small reducer; l dynamic balance duplicate removal; m fault detection; n intermediate cleaning; o polishing; p cleaning; and q final inspection, oil coating and packaging. The novel process for processing the crankshaft is reasonable in design, reduces processing flow compared with traditional production process of crankshafts, reduces number of machine tools, and reduces labor strength of operators, thereby reducing production cost, and improving production efficiency.

Electric automatic take-up device

Abstract: The invention relates to an electric automatic take-up device and belongs to the field of electric installation auxiliary devices. The electric automatic take-up device comprises a base plate, wherein a motor and a speed reducer are fixed above the base plate; the motor is connected with the speed reducer; the output end of the speed reducer is connected with a rotary shaft and a wire winding device and a supporting seat are arranged at the other end of the rotary shaft; the wire winding device is mounted on the rotary shaft; the rotary shaft is mounted on the supporting seat; the supporting seat is fixed on the base plate; a cable sorting device is arranged on the other side of the wire winding device; and the cable sorting device is fixedly arranged on the base plate. The electric automatic take-up device can be used for automatically winding wires and a wound wire wheel can be taken off and is convenient to move and store; furthermore, the cable sorting device is additionally arranged and can be used for sorting cables, so that the cable skins can be prevented from damaging in a take-up process.

Asphalt viscosity reducer and asphalt composition

Abstract: The invention discloses asphalt viscosity reducer and asphalt composition. The asphalt viscosity reducer comprises the following components in percentage by weight: 5-30% of an additive A, 1-10% of an additive B, 1-10% of kaloamine and 50-93% of an additive C. The components are uniformly mixed in a proportion, then the asphalt viscosity reducer is obtained, and the asphalt viscosity reducer is mixed with matrix asphalt to obtain the asphalt composition. The asphalt viscosity reducer has a good viscosity reduction function on asphalt, and the asphalt composition with the asphalt viscosity reducer has low high-temperature viscosity, good lubrication performance and good viscosity and ductility at 60 DEG C, meanwhile has the needle penetration and softening point the same as those of the base asphalt, and has the advantages of low production cost, simple and convenient preparation method, wide application range and the like.