76results about "Gearing" patented technology

In a belt drive of an internal combustion engine, a two-arm belt tensioner has a fixed tubular supporting portion; a first and a second arm fitted to the tubular supporting portion to rotate about a common hinge axis, and supporting respective idle wheels cooperating with respective branches of the drive belt; and an elastic device for forcing the arms towards each other; the elastic device having a torsionally elastic elongated member extending through the tubular supporting portion, coaxially with the hinge axis, and having respective opposite end portions projecting outwards of the tubular supporting portion; the end portions being fitted with respective end caps, one of which is fitted directly with one of the arms, and houses one end, connected integrally to the other cap, of the other arm.

A transmission guide comprises a synthetic resin shoe supported by and integrally molded with a synthetic resin base by two-part molding. A guide length retaining mechanism, which can be formed by one or more protrusions on the back of the shoe and one or more cooperating recesses on the supporting surface of the base, retains the shoe against longitudinal movement relative to the base. A guide width retaining mechanism, which can be formed by projections on the edges of the shoe and cooperating holes formed in side walls extending from the supporting surface of the base, retains the shoe against widthwise movement relative to the base.

Provided is a disk brake improved in production efficiency by simplifying a structure for retaining the braking force of a parking brake. A disk brake is equipped with a piston holding mechanism having a ball-and-ramp mechanism in which balls are moved by rotation transmitted from a motor, causing a rotary-rectilinear ramp to press a piston. The rotary-rectilinear ramp has an external thread engaged with an internal thread formed on a base nut immovable in a rotor axis direction relative to a caliper body. The external thread, when a force is applied thereto from the piston in the rotor axis direction, can retain the position of the rotary-rectilinear ramp in the rotor axis direction. Thus, the structure for retaining the braking force of the parking brake can be simplified to improve the production efficiency.

The Ring Rack Oil Pumping Machine is comprised of: a base, a frame mounted on the base, a roller mounted at the frame top, a sprocket case connects to the middle of the frame; a input shaft having a lower sprocket and a drive shaft having an upper sprocket are installed at the bottom and top of the sprocket case respectively, the upper sprocket and lower sprocket are connected by a chain; a guide wheel, track gear and centralizer wheel are mounted in sequence on the end of the drive shaft extended out of the sprocket case; the track gear meshes with a rack, a slide rail is mounted with the frame, and a sliding base (21) connected with the slide rail (20) moveably. Comparing to currently using pumping units, this invention features simple structure, high safety and reliability, upgraded efficiency, easy maintenance, smooth running and high durability.

A control apparatus for controlling a vehicle, the vehicle provided with: a rotating electrical machine capable of inputting or outputting a torque with respect to an input shaft; and a transmission, which is disposed between the input shaft and an output shaft coupled with an axle, which is provided with a plurality of engaging apparatuses, which transmits a torque between the input shaft and the output shaft, and which can establish a plurality of gear stages having mutually different transmission gear ratios in accordance with engagement states of the plurality of engaging apparatuses, the transmission gear ratio being a ratio between a rotational speed of the input shaft and a rotational speed of the output shaft, the vehicle control apparatus provided with: a detecting device for detecting a braking operation amount of a driver; and an input shaft torque controlling device for controlling a torque of the input shaft such that in cases where the detected braking operation amount changes in a reducing direction which promotes a reduction in a braking force applied to the vehicle in a coast regeneration speed change period in which the gear stage is changed at the time of coast regeneration of the rotating electrical machine, a change in torque of the output shaft accompanied by the change in the braking operation amount is suppressed.

The invention relates to a mechanical speed-changing device, in particular to a variable torque type continuously variable transmission. The variable torque type continuously variable transmission realizes infinitely variable speed by changing torque of a speed-changing wheel through a speed-changing control rod. The working principle of the variable torque type continuously variable transmission is that a sliding block with a short shaft is mounted in a groove, in the radial direction, of a speed-changing wheel in the box; an eccentric shaft of a power wheel is connected with the short shaft of the sliding block through a transmission rod; a speed-changing control rod can control movement of the sliding block; the torque of the speed-changing wheel is changed through movement of the sliding block, so that the amplitude of the reciprocating rotation of the speed-changing wheel is changed and the reciprocating stroke of a rack meshed with the speed-changing wheel is changed; the reciprocating motion of the rack is transformed into homodromous rotation by a reversing wheel internally provided with an overrunning clutch; power is output through an output shaft. The radial groove of the speed-changing wheel also can lock the sliding block through isometric pin holes to form speed change with gears. The variable torque type continuously variable transmission is stable in process, large in transmission and suitable for speed change of a main shaft of an engine.

A bicycle shift control device is adapted to be mounted to a bicycle equipped with an alternating current generator and a shifting device having a plurality of speed steps. The shift control device includes a power storage unit adapted to store electrical power from the alternating current generator; a shift control element operatively coupled for receiving electrical power from the power storage unit and for providing shift control signals for controlling the operation of the shifting device; and a case adapted to be mounted to the bicycle, wherein the case houses both the power storage unit and the shift control element.

A tensioner comprising a base, a ring engaged with the base, the ring rotatable about a center “C” within a base opening, a pulley journalled to the ring, a pivot arm pivotally engaged with the ring, a pulley journalled to the pivot arm, a torsion spring disposed between the ring and the pivot arm for urging the pivot arm, a damping assembly frictionally disposed between the base and the ring, a spring applying a normal load to the damping material, and the damping material having a resistance in the range of greater than 0Ω up to approximately 10,000Ω.

The invention discloses a variable-rigidity and high-damping type automatic tensioning device. The device comprises a tensioning arm, a housing, a first damping device, a second damping device, a torsion spring, a tensioning wheel, a mandrel, a rolling bearing and an abrasion-proof plastic bush, wherein the housing is fixed to an engine body; the mandrel is fixed to the housing; the tensioning armis mounted on the mandrel through the abrasion-proof plastic bush in a pivoting manner; a belt wheel is mounted at one end, far away from the mandrel, of the tensioning arm through the rolling bearing; a housing storing chamber is formed in the housing; one end of the torsion spring is arranged in the housing storing chamber, and the other end of the torsion spring is propped to a tensioning armspring seat of the tensioning arm; the first damping device and the second damping device are relatively arranged at the upper part of the housing storing chamber; one end of the first damping deviceis propped to the tensioning arm while the other end of the first damping device is propped to a torsion arm of the torsion spring. With the adoption of the device, high frictional damping capacity isprovided; high torque can be provided by changing the rigidity when the belt tension fluctuates greatly, and thus slipping and noise can be avoided.

A power connection/disconnection mechanism which connects and disconnects power, including: a crutch cover having a claw portion, and a projection which a contact portion of a lever is brought into abutment with; a gear having a toothed portion which the claw portion is brought into engagement with and disengagement from, wherein a mesh engagement portion formed from the claw portion and the toothed portion has two stages for forward and backward rotations.

The invention discloses a method for preparing a gray iron based composite material for generating tungsten carbide in situ. The method comprises the following steps: weaving tungsten wires into a tungsten wire net with certain specification, and cutting, coiling or overlapping the tungsten wire net to form a fixed structure which is preset in a die cavity of a casting mould; and smelting the gray iron to obtain molten gray iron to be poured into a casting mould, and cooling and cleaning the casting mould to obtain the gray iron based composite material for generating the tungsten carbide in situ. The gray iron based composite material for generating the tungsten carbide in situ prepared by the method can obtain evenly-distributed tungsten carbide hard phases at the position of the tungsten wire net through the reaction in situ of the tungsten in the tungsten wire net and the carbon in the gray iron. The gray iron based composite material fully plays the high wear resistance of the tungsten carbide hard phases and the good toughness of the gray iron, the hard phases are arranged orderly and are distributed evenly, the regulation and the control are convenient, and the process is reliable, thus the gray iron based composite material can be widely used in the wear resisting fields such as mine, electric power, metallurgy, coal, building materials and the like for producing wear resistant parts with various shapes and any size specification.

The invention discloses a combined double-nut ball screw pair with adjustable pretightening force and an installation method. telescopic actuator, right pre-tightening connecting plate, right flat key and right nut; the lead screw passes through the annular giant magnetostrictive actuator, and the annular giant magnetostrictive actuator One side of the left nut is installed with the lead screw, and the other side is installed with the right nut with the lead screw. The left nut is connected with the left pre-tightening connection plate through the left flat key, and the left pre-tightening connection plate is installed on the On the ring-shaped giant magnetostrictive actuator, the force sensor is installed between the ring-shaped giant magnetostrictive actuator and the left nut; the right nut is connected to the right pre-tightened connection plate through the right flat key, The right pre-tightened connection plate is installed on the annular giant magnetostrictive actuator.

The invention relates to the field of mechanical control, in particular to a supporting leg control device. The device judges the supporting leg state through two variables including the torque and the stroke, the torque serves as the main judgment basis, and it is ensured that the leg withdrawing zero return position is within the reasonable range. The sliding column zero return position each time is determined at random, the torque change in the reasonable range can be well recognized in the zero return process, long-term stable running of the control device is ensured, the supporting leg fault period is reduced, and reliability of the control device is improved.

To surely and easily secure a return tube to a nut and prevent the return tube from floating and expanding when circulating failure of balls occurs. The ball screw device has a screw shaft having a helical shaft raceway groove on the outer face thereof, a nut having a nut raceway groove on the inner face so as to oppose to the shaft raceway groove, a load path formed by the shaft raceway groove and the nut raceway groove, balls rotatably mounted in the load path, a communicating member communicating both ends of the load path to guide the balls exterior of the nut and having a bent portion; a tube fixture for fixing the communicating member to the nut and a reinforcement member for receiving stress applied to the bent portion of the communicating member on an outer face of the tube fixture.

The invention proposes a chain transmission mechanism for a grinding machine. The mechanism comprises a bracket, a first shell, a second shell, a motor, a speed reducer, a driving chain wheel, a guide shaft, a driven chain wheel, a chain and a tension adjusting mechanism; the tension adjusting mechanism includes an adjusting block fixed shaft, an adjusting block, an adjusting chain wheel shaft, an adjusting chain wheel, an adjusting spring fixed piece, an adjusting spring, an adjusting screw rod and an adjusting screw rod fixed base; the adjusting chain wheel is positioned on the inner side of the chain; the adjusting screw rod rotates in the adjusting screw rod fixed base; and the adjusting spring drives the adjusting chain wheel to move to one side of a center connecting line of the driving chain wheel and the driven chain wheel, so that the chain is tensioned, the transmission efficiency and the transmission stability are improved, and the polishing precision and the polishing efficiency of the grinding machine are improved.

Provided is an electric linear actuator with which operation lock of a ball screw is prevented and high rotational performance is achieved at a low cost. [Solution] A housing (2) comprises a first housing (2a), and a second housing (2b). An electric motor is attached to the first housing (2a). An accommodation hole is formed at the first and second housings (2a, 2b) to accommodate a screw shaft. A deceleration mechanism (6) comprises an input gear (3) which is fixed to a motor shaft, an intermediate gear (4) which is engaged with the input shaft (3), and an output gear (5) which is engaged with the intermediate gear (4), and fixed to a nut (18) as a single unit. The intermediate gear (4) is rotatably supported via a shell-type needle bearing (23) using gear shafts (22) respectively implanted at the first housing (2a) and the second housing (2b). Ring-shaped washers (27, 28) are mounted on both sides of the intermediate gear (4). A width of a gear section of the intermediate gear (4) is configured to be smaller than a face width.

A Continuously Variable Transmission (CVT) belt inspection device comprising a detection section for a running track and a determination section for distinguishing at least whether the cause of that running track is a substance attributable to an impurity, such as metal powder, etc. or an object attributable to an irregular-shaped area based on the periodicity of that running track. Particularly, when the cause of a running track is determined to be a substance attributable to an innocuous impurity, such as metal powder, etc., unnecessary part replacements can be avoided and a significant cost reduction achieved.

A driving mechanism for operating a shaping die to join stacked plates by a deep-drawing and swaging operation is implemented as an electric drive, such as a linear motor or a rotary motor, which is operatively connected to the shaping die.

The invention provides a vehicle with a double-motor electric drive axle and a drive method. Power output by a first drive motor M1 is transmitted to a third cylindrical gear transmission speed reduction module; the power output by the first driving motor M1 is transmitted to a first half shaft and a second half shaft to drive a first wheel and a second wheel; and power output by a second driving motor M2 sequentially passes through a first gear transmission speed reduction module and a second gear transmission speed reduction module and is converged with power output by the first driving motor M1 at the third gear transmission speed reduction module. By configuring different working modes and control strategies, different coupling of driving force under different vehicle speeds and different loads is achieved, real-time power distribution is achieved, the two motors share two gears for gear shifting, the gear shifting reliability is guaranteed, meanwhile, the output torque of the motors can be further improved, the motors can work in a high-efficiency interval, and the dynamic property and economical efficiency of the whole vehicle are improved.

The invention relates to a rack type parallel coupling underactuated robot finger device belonging to the technical field of hand design of humanoid robots. The device comprises a base, a motor, a speed reducer, a proximal joint axle, a middle finger section, a distal joint axle, a tail end finger section, a coupling transmission mechanism, an underactuated transmission mechanism and a plurality of spring parts. The device comprehensively realizes the effective fusion of the coupled grasping effect and the selfadaptive underactuated grasping effect by adopting the motor, the gear rack coupling transmission mechanism, the gear rack underactuated transmission mechanism and the spring parts. The device has simple structure and no transition axle; and the transmission parts do not distort andare not pretightened, the transmission process is accurate, the appearance and the action process of grasping objects are similar to those of human fingers, and therefore, the device is suitable for being taken as fingers of a humanoid robot hand.

The invention discloses a mechanical device capable of realizing remote classification transmission control. The mechanical device comprises a box and a motor; a left upper gear shaft, a right upper gear shaft, a middle transmission shaft, a first transmission mechanism and a second transmission mechanism are arranged in the box; a left gear disc and a right gear disc sleeve the middle transmission shaft; the left gear disc is in engaged transmission with the left upper gear shaft; the right gear disc is in engaged transmission with the right upper gear shaft; the left upper gear shaft is driven to rotate through the motor by the first transmission mechanism; and the right upper gear shaft is driven to rotate through the second transmission mechanism by the motor. The mechanical device canuse one motor for realizing classification control of movement of a terminal execution device, and reduces the manufacturing cost, the operation cost and the control cost.

The invention discloses a linkage platform screen door of a subway. The linkage platform screen door comprises a plurality of platform screen door steel beam component stand columns which are uniformly arranged between an upper wall body and a lower wall body, a left fixed platform screen door sheet, a left moving platform screen door sheet, a right fixed platform screen door sheet and a right moving platform screen door sheet are arranged between every two adjacent platform screen door steel beam component stand columns, and the left fixed platform screen door sheets and the right fixed platform screen door sheets are fixedly arranged between the upper wall body and the lower wall body; the upper wall body is provided with an upper sliding rail, the lower wall body is provided with a lower sliding rail, the upper ends of the left moving platform screen door sheets are slidably arranged in the upper sliding rail through left pulley blocks, the upper ends of the right moving platform screen door sheets are slidably arranged in the upper sliding rail through right pulley blocks, the lower ends of the left moving platform screen door sheets and the lower ends of the right moving platform screen door sheets are slidably arranged on the lower sliding rail through sliding blocks, and one end of the upper wall body is provided with a servo gear motor.