7233results about "Gearing" patented technology

An active air flap system mounted in a predetermined portion of a vehicle, includes: a housing, a flap mounted on the housing to be relatively movable, an actuator coupled to the at least one flap and configured to drive the at least one flap, and a power transfer mechanism engaging the actuator and the flip and configured to transfer power from the actuator to the at least one flap so that the at least one flap performs a dual operation of a sliding movement operation and a rotation operation of rotating around a predetermined rotation axis, preventing the occurrence of design heterogeneity and the air resistance caused by forming the space between the at least one flap and the radiator grill, and improving shielding properties.

An electric linear actuator has a housing extending along a longitudinal axis. A spindle is provided in the housing and extends along the longitudinal axis. A rod is coaxially coupled to the spindle and extends from a proximal end located in the housing to a distal end located outside the housing. The rod is movable along the longitudinal axis in response to rotation of the spindle. A circuit board is located in the housing adjacent the proximal end of the rod. The circuit board includes a linear inductive sensor having a linear axis oriented parallel to the longitudinal axis. The linear inductive sensor senses an actual position of the proximal end of the rod.

An electric powered steering assembly includes a housing with a cylindrical portion extending in an axial direction, an interior wall of the cylindrical portion defines a groove and extends in the axial direction, and the groove has at least two inwardly tapered walls. A ball screw is disposed in the housing and defines a hole extending in a radial direction. A ball nut disposed in the housing, surrounding the ball screw, is configured to rotate relative to the housing. An anti-rotational pin has a tapered end disposed in the hole, the tapered end having tapered surfaces corresponding to the at least two inwardly tapered walls. A spring is disposed in the hole and biases the anti-rotational pin in a radially outward direction towards the groove so that the tapered end of the anti-rotational pin engages the groove and thereby restricts rotation of the ball screw relative to the housing.

The present application provides a reverse-type integrated miniature linear servo electric cylinder. An open end of a rotor housing in a power transmission mechanism is fixedly connected to a planetary carrier by means of a coupling, the planetary carrier is directly driven by means of integration of the motor rotor housing and the planetary carrier, and after power transmission via the planetary carrier, an output end is directly driven to achieve linear motion without adding a gear reduction mechanism to a power transmission system of the electric cylinder, thereby significantly reducing the internal space of the electric cylinder occupied by the power transmission mechanism, allowing the electric cylinder to develop to have a more miniaturized and compact structure, saving costs; moreover, the energy utilization rate of the electric cylinder is improved, the electric energy consumption of the electric cylinder is reduced, and relatively good economic benefits can be yielded.

The present disclosure is directed to a multi-RET actuator system. The system includes a plurality of drive assemblies operatively connected to one or more phase shifter assemblies such that movement of one of the drive assemblies adjusts at least one, of the one or more phase shifter assemblies; a drive system including a drive screw and a drive shaft, the drive shaft supporting a second connector, the drive system configured to transversely move along the drive screw to position the drive system adjacent to a target drive assembly of the plurality of drive assemblies, a movable sled assembly operatively connected to the drive system, the movable sled assembly configured to extend or retract such that movement of the sled assembly selectively engages or disengages the second connector with a respective first connector for the target drive assembly. Methods of calibrating and operating multi-RET actuator systems are also described herein.

The invention discloses a reverse type annular tooth groove planetary roller screw which comprises a nut, a screw rod, a plurality of rollers and a retainer, a multi-head internal thread is arranged in the nut, the rollers and the screw rod are both of an annular tooth groove structure without a helix angle, and the annular tooth grooves of the rollers are meshed with the internal thread of the nut and the annular tooth grooves of the screw rod respectively; first gears are machined at the two ends of the annular tooth groove of the lead screw, second gears are machined at the two ends of the annular tooth groove of the roller, and the first gears are meshed with the multiple second gears at the same time. The retainer is of an integral flexible retainer structure, and the pin rollers have the self-adaptive capacity in multiple directions in the circumferential direction and the radial direction through the retainer. And an arc-shaped roller path is designed on the screw rod and is matched with the ball spline housing to play a linear rolling guiding and rotation stopping role on the screw rod. The reverse lead screw has the advantages of being large in transmission ratio, compact in structure, easy to machine and assemble, low in cost, good in self-adaptive performance, high in positioning precision, good in reliability and the like.

The invention discloses an energy storage unit, an energy accumulator, an energy storage transmission device and a photovoltaic tracking system, and the energy storage unit comprises an elastic part; an elastic member; the fixing piece is connected with one end of the elastic piece; the driving part is used for being connected with an external load, and the driving part is rotationally matched with the fixing part; the driven piece is connected with the other end of the elastic piece, the driven piece is rotationally matched with the fixed piece, and a switching part is arranged on the driven piece; the first combination part is arranged on the driving part, and the first combination part can be matched with the switching part; the second combination part is arranged on the fixing piece, and the second combination part can be matched with the switching part; in an initial state, the switching part is matched with the first combination part; the conversion part is used for being matched with the second combination part to achieve force storage or energy release of the elastic piece, or the conversion part is matched with the first combination part to achieve deformation of the elastic piece. The device has the advantages of being safe, reliable, high in automation degree, high in practicability, economical and environmentally friendly.

A coaxial asynchronous motor drive system, including a speed reducer, an electric motor and a main housing, and further including a motor controller, wherein the electric motor and the speed reducer are connected to form a motor reducer assembly and mounted inside the main housing, and the motor controller is fixed to the main housing and connected to the motor reducer assembly. The system reduces parasitic loss of an auxiliary motor drive system of a battery electric four-wheel-drive vehicle and increases the range per charge of the vehicle, and the compact and integrated coaxial motor drive system facilitates maximum utilization of available space of the vehicle.

The invention discloses a piston assembly of a motor brake and an assembling process of the piston assembly, and relates to the technical field of motor brakes. Comprising a caliper shell, a caliper body assembly is installed on one side of the caliper shell, a power transmission unit assembly is detachably installed on the caliper body assembly, a positioning pin is arranged on the caliper body assembly, and a positioning hole matched with the positioning pin is formed in the power transmission unit assembly; the caliper body assembly of the caliper comprises a main support, a second support and a third support, wherein the main support is detachably installed on a caliper shell; the sleeve is detachably mounted on the inner side of the main bracket; the nut is connected into the sleeve in a sliding manner; and the ball screw assembly is connected into the nut through a thread. According to the invention, through arrangement of structures such as the caliper body assembly, torque transmission, clamping force transmission and stress support of parts are carried out in a highly integrated manner, installation and signal transmission of a force sensor in a very narrow space are realized, and the performance is reliable.

A lead screw control actuation system. A system according to an embodiment includes a motor configured to rotate a lead screw that is configured to increase torque provided by the motor. The lead screw is coupled to a nut through a threaded opening such that rotation of the lead screw causes the nut to move along a longitudinal axis of the lead screw. The nut includes a slot oriented in a direction perpendicular to the direction of motion of the nut. The system further includes a lever arm including a pin at a first end of the lever arm, the pin configured to slide in the slot of the nut to cause the lever arm to rotate in response to the motion of the nut. A second end of the lever arm is coupled to a canard such that rotation of the lever arm causes the canard to rotate.

The invention provides an assembling and meshing precision adjusting method for a harmonic reducer, and relates to the technical field of reducers, the harmonic reducer comprises a flexible gear and a rigid gear with specific tooth profiles, and the tooth profile of the flexible gear comprises a first arc tooth top and a first arc tooth root; the tooth profile of the rigid gear comprises a second planar tooth top, transition arcs located at the vertex angles of the two sides of the second planar tooth top and a second arc-shaped tooth root. The elliptical wave generator is used for driving the flexible gear; the wave height of the wave generator is defined as the difference between a long half shaft and a short half shaft; the method comprises the following steps: acquiring a tooth profile parameter set of a flexible gear and a rigid gear, wherein the tooth profile parameter set comprises a first tooth crest arc radius, a first tooth root arc radius, a second tooth crest plane width and a second tooth root arc radius; based on the tooth profile parameter set, according to a preset matching relation used for optimizing the meshing performance, cooperatively determining a target wave height matched with the tooth profile parameter; and according to the target wave height, a corresponding wave generator is selected to complete the assembly of the harmonic reducer.

A trailer landing gear deployment device for mechanically raising and lowering a trailer includes a trailer and a landing gear that can be raised and lowered relative to the trailer. A handle is mechanically coupled to the landing gear, which is selectively raised and lowered by rotation of the handle. A disk is rotatably coupled to a housing. An arm is coupled to the disk. The arm is couplable to the handle and rotates the handle when the disk is rotated. A motor is operably coupled to the disk wherein the motor is actuatable to rotate the disk. A power source is electrically coupled to the motor. A control panel is electrically coupled to the power source. The control panel is manipulatable to actuate the motor.

The invention relates to a recirculator (30) for a nut (12) of a ball screw mechanism (1), comprising an annular body (32) having a reference axis (300) intended to be aligned with a helical axis of the nut (12), the annular body (32) comprising a bearing surface (36), and a guide structure (34) arranged on the bearing surface (36), the bearing surface is configured to bear a nut (12) against the ball screw mechanism (1) in a bearing direction having an axial component parallel to the reference axis (300), the guide structure is configured to guide the balls in the circulation path opening at a first guide end (62) into a recirculation channel of the nut (12) and at a second guide end (72) onto a raceway (116) defined by a thread of the nut (12), characterized in that the bearing surface (36) lies at least partially in a cross-sectional plane (130) intersecting the recirculation path and perpendicular to the reference axis (300).

The utility model provides a double-rigid-gear harmonic speed reducer with a torque sensing function, which relates to the technical field of speed reducers and comprises a wave generator, a flexible bearing, a flexible gear, an output end rigid gear, a crossed roller bearing and a fixed end rigid gear. The crossed roller is arranged between the bearing outer ring and the output end rigid wheel, the output end rigid wheel serves as an inner ring of the crossed roller bearing, and the fixed end rigid wheel is detachably and fixedly connected with the bearing outer ring; the two end faces of the fixed end rigid wheel are each provided with a receding groove coaxial with the fixed end rigid wheel, a connecting wall is formed between the bottoms of the two receding grooves, and a plurality of strain gauges arranged in a circumferential array mode are installed at the position, close to one side of the output end rigid wheel, of the bottom of the receding groove. The elastic strain gauge is embedded in the rigid fixed end rigid wheel, so that the fixed end rigid wheel has a torque sensing function, the axial thickness of the harmonic speed reducer is not increased, and the use requirements of more occasions are met.

An active air flap system for a vehicle is provided. The system includes an exterior surface having at least one or more openings, a housing provided on a rear side of the exterior surface, a flap rotatably mounted on the housing, and a driving section rotating the flap to open and close the openings. The driving section has a dual link structure including a first link moving in a vertical direction and a second link connecting the first link and a flap linkage forming an operating shaft of the flap, so that when the flap is operated, the rotation angle of the flap is increased, and interference between the flap and the bumper is prevented from occurring.

An unmanned aerial vehicle (UAV) having wings stowed against a fuselage of the UAV in a first arrangement is disclosed. Methods and systems for deploying the wings into a second arrangement are disclosed. For example, after a launch of the UAV, the UAV monitors for at least one precondition. The at least one pre-condition being a pre-condition associated with deploying wings of the UAV into the second arrangement. Upon detecting the at least one precondition, the wings of the UAV are deployed into a second arrangement. Deploying the wings comprises activating, in response to detecting the at least one precondition associated with the UAV, a gearbox configured to transition the wings from the first arrangement to the second arrangement. Roll control may be maintained throughout launch and deployment.

The invention provides a performance testing device and method for relay protection, belongs to the technical field of circuit testing equipment, and solves the technical problems that the working intensity of operation and maintenance personnel is high due to the fact that an existing road is rugged and equipment is heavy, the temperature is high in summer, and mechanical equipment and the maintenance personnel are overheated due to the too high temperature. The performance testing device for relay protection comprises a moving box and an equipment cavity formed in the moving box, a mounting frame is rotationally connected in the equipment cavity, a relay protection tester is arranged on the mounting frame, a limiting plate is slidably connected to the mounting frame, and a regulation and control assembly for controlling the limiting plate to move is arranged on the mounting frame. And the limiting plate and the inner wall of the mounting frame clamp and fix the relay protection tester, and the bottom of the moving box is slidably connected with a driving box. The device has the advantages that the mobility of the device is achieved, the damping effect is achieved during moving, vibration to the device is reduced, and wind power can be generated to cool the device when the device is transferred and advances.

The invention discloses a ship shaft generator and an operation method thereof, the ship shaft generator comprises a generator and an execution device, a ship main shaft is provided with a driving belt wheel, the generator is provided with a driven belt wheel, and the driven belt wheel and the driving belt wheel are connected through a transmission belt; the driving belt wheel comprises a shaft sleeve, a middle wheel ring and an outer wheel ring, the shaft sleeve is fixedly connected to a ship main shaft, and a rotary buffering mechanism is arranged between the middle wheel ring and the outer wheel ring; a plurality of locking pieces are arranged on the middle wheel ring in a sliding mode and can move in the radial direction of the middle wheel ring. The actuating mechanism controls the locking piece to move between the locking position and the unlocking position; when the locking piece is located at the locking position, the shaft sleeve and the middle wheel ring are connected. The connecting state of the shaft sleeve and the middle wheel ring is controlled through the locking piece, when maintenance is needed, the executing device switches the locking piece to the unlocking position, the generator can be directly maintained at the moment, ship navigation is not affected, and navigation pause caused by maintenance is avoided.

This disclosure is directed to a driving device for driving a swing member which has a driving power source, a power transmission assembly driven by the driving power source, a screw assembly and a clutch assembly arranged between the power transmission assembly and the screw assembly. The screw assembly has a nut and a screw rod screwed with each other. The screw rod has an end connected with the swing member. The nut can be operated by the clutch assembly to connected to or release the power transmission assembly. When the nut is connected to the power transmission assembly, the power transmission assembly is driven by the driving power source, so that the nut is driven by the power transmission assembly to move the screw rod and allow the swing member to be operated by an external force in any status during a power-driven operation of opening or closing.

A moving part of the short flexible cylinder active complex parallel radial harmonic transmission is composed of a thin-wall composite short flexible cylinder and two rolling wave generators with roller pins or ball-retainer assemblies. A flexible bearing low-speed moving ring raceway is integrated on one side of the gear, and a full-cylinder-length gear is arranged on the other side of the gear; the two semi-short shafts are fixedly connected to the two ends of a motor rotor respectively, are integrated with flexible bearing high-speed moving ring raceways and are the same in structure size, and a semi-short shaft at one end needs to be coplanar with a semi-long shaft at the other end, so that the two ends of the semi-short shafts generate time-varying radial antisymmetric deformation; the static part is composed of end covers which are fixedly connected to the two ends of the motor stator and provided with rigid gears. A double-convex-arc raceway of a high-speed moving ring of the flexible needle bearing is designed, a convexity needle roller with the middle concave structure dynamically constraining the axial movement amount of a short flexible cylinder and a retainer and various structures facilitating rolling body assembly are used, and a waveform raceway calculation formula of a wave generator for the needle roller is given; therefore, the radial size and the axial size of the active complex radial harmonic transmission can be reduced on the basis of ensuring the transmission precision and the bearing capacity.

A spindle drive for a vehicle steering gear, including a spindle having an external thread and a spindle nut having an internal thread being guided on the external thread. One of the spindle and spindle nut is rotatable and produces a corresponding translational movement of the other. The other of the spindle and spindle nut is guided via a plain bearing along the axis of rotation relative to a fixed structural part. The plain bearing is formed between sliding surfaces of a first and second bearing part, the first being provided on the other of the spindle and spindle nut and the second being provided on the fixed structural part. One of the first and second bearing parts is designed as an elevation, the other being designed as a recess. The recess surrounds the elevation on both sides in a rotational direction.

A symmetrical link servo driving device, relating to the technical field of servo motors. The symmetrical link servo driving device comprises a driving mechanism, an electric motor, a gear reduction mechanism and a servo shaft rocker arm mechanism, wherein the gear reduction mechanism is in transmission connection with an output shaft of the electric motor, a servo shaft rocker arm mechanism is provided on the side of the gear reduction mechanism facing away from the electric motor, the servo shaft rocker arm mechanism comprises a base body, a servo shaft is rotationally connected to an inner cavity of the base body, and a crank is provided at a shaft body of the servo shaft; a self-locking mechanism capable of locking the servo shaft is provided at the bottom of the inner cavity of the base body; and a driving mechanism is provided on one side of the electric motor, the driving mechanism comprises a housing, a lead screw is rotationally connected in the housing, and the lead screw is correspondingly in transmission connection with an output gear of the gear reduction mechanism. The present invention has a simple structure, and the electric motor and the driving mechanism are arranged in parallel to effectively reduce the overall volume, such that the whole device is compact and small. The self-locking mechanism capable of locking the servo shaft is provided at the bottom of the inner cavity of the base body, that is, when the servo shaft stops rotating, the servo shaft can be locked by means of the self-locking mechanism, thereby preventing an external force from being transmitted to the driving mechanism by means of the servo shaft.

The invention relates to the technical field of high-precision transmission, and particularly discloses a retainer and a circulating type planetary roller lead screw pair. Wherein the retainer comprises a circular ring-shaped main body, a plurality of pin roller guide grooves which are uniformly distributed in the circumferential direction are formed in the circular ring-shaped main body, the pin roller guide grooves extend in the radial direction of the circular ring-shaped main body, and openings penetrating to an inner hole in the circular ring-shaped main body are formed in the radial inner ends of the pin roller guide grooves; the two sides of the opening are shrunk inwards to form shrunk openings, and the shrunk openings are elastic. According to the structure, the retainer is in the shape of the circular ring and is arranged on the side face of the internal thread section of the nut, so that the overall radial size of the circulating type planetary roller screw pair can be reduced, and a reliable structural foundation is provided for achieving miniaturization and microminiaturization of the circulating type planetary roller screw pair; the roller guide grooves are provided with the openings, the radial size of the retainer can be made smaller, and therefore the overall radial size of the circulating type planetary roller lead screw pair is made smaller.

The utility model discloses an electric barring gear of a vertical mill composite driving system, which comprises a barring motor, a barring speed reducer connected to the driving end of the barring motor, a barring pinion fixedly connected to the output end of the barring speed reducer, and a barring gearwheel used for being connected with an external driving device, the barring motor drives the output end of the barring speed reducer to rotate, the barring speed reducer drives the barring small gear to rotate, the barring small gear is parallel to the rotating plane of the barring large gear, and the barring small gear is meshed with the barring large gear. Low-rotating-speed and high-torque power transmission is carried out on the turning pinion through the turning motor and the turning speed reducer, so that the purpose of driving a vertical mill composite driving system and a millstone to carry out turning is achieved, the turning speed is stable and controllable, man-machine contact is reduced, and working efficiency and operation safety are improved.

The invention discloses an independent module type multi-stage error suppression transmission system and a manipulator, and relates to the field of semiconductor wafer transfer equipment, the independent module type multi-stage error suppression transmission system comprises an arm body, and a plurality of transmission areas are distributed in the height direction of a cavity; the at least two belt wheel sets are provided with a plurality of transmission layers distributed in the vertical direction, the transmission layers are located in different transmission areas respectively, and each belt wheel set comprises a plurality of belt wheel modules; the supporting assembly comprises independent supporting units corresponding to all the transmission areas, and each supporting unit comprises a positioning supporting part which is detachably connected to the inner peripheral side wall of the mounting shell; wherein the belt wheel modules are rotatably arranged on the supporting unit, the positioning supporting parts located in the different transmission areas are distributed in a staggered mode on the vertical projection, and the supporting assembly is configured to isolate and disperse radial load transmission of the different belt wheel modules. According to the scheme, the radial load and vibration between the belt wheel modules are dispersed and isolated.

An electric cylinder (10) with a reminder function and a quick-release structure (2) thereof. The electric cylinder (10) includes a worm wheel (21). The quick-release structure (2) includes a clutch (22), a clutch plate (23), a linkage rod component (3), a position sensor (4), and an alarm (5). The clutch plate (23) is connected to the worm wheel (21). The linkage rod component (3) includes a pullable part (31) disposed on one end thereof. The linkage rod component (3) includes a sliding block (32) disposed between the pullable part (31) and the clutch plate (23). The position sensor (4) is disposed corresponding to the sliding block (32), and configured to sense a movement of the sliding block (32) and generate a displacement signal. The alarm (5) is configured to receive the displacement signal and send a warning.

The invention discloses a double-clutch hydraulic reversing system and a control method, and belongs to the technical field of paddy field power mechanical gearboxes. Comprising a double-clutch hydraulic reverser, a reversing valve, an oil supplementing pump and a belt pulley, the oil supplementing pump, the reversing valve and the double-clutch hydraulic reverser form oil way circulation, and the oil supplementing pump sucks hydraulic oil stored in the double-clutch hydraulic reverser and supplies oil to the double-clutch hydraulic reverser through the reversing valve; the belt pulley is connected with an input shaft of the double-clutch hydraulic commutator; the double-clutch hydraulic reverser comprises a double-clutch area A and a double-clutch area B. The reversing valve supplies oil to corresponding oil inlets of the double-clutch hydraulic reverser through reversing signals so as to control combination of the double-clutch area A or the double-clutch area B of the double-clutch hydraulic reverser and drive an output shaft of the double-clutch hydraulic reverser to rotate forwards or backwards. The whole structure is simple, double-clutch reversing is convenient, the transmission efficiency reaches up to 92%-93%, and the working efficiency is remarkably improved; lubricating and heat dissipation are carried out through oil liquid, and durability is far higher than that of an electromagnetic clutch.

A driver of an automatic guided vehicle includes a crown gear (turning gear) fixed to a bottom of a vehicle body, a support shaft penetrating a center of the crown gear and extending vertically from the vehicle body, a frame supported by the support shaft to be rotatable on a horizontal plane, a wheel axle rotatably and horizontally provided on the frame, and a wheel connected to the wheel axle. A first motor and a second motor, which are drive sources, and a first planetary gear mechanism and a second planetary gear mechanism are provided at both ends in an axial direction of the wheel axle, respectively. Each carrier of the first and second planetary gear mechanisms is connected to the wheel axle, and each ring gear of the first and second planetary gear mechanisms meshes with the crown gear.

A steer-by-wire system for a vehicle includes a rack moveable in an axial direction and defining a groove extending in the axial direction of the rack. The system also includes a housing surrounding at least a portion of the rack. The system further includes an anti-rotation device disposed proximate an outer surface of the rack at the mounting location of the rack and within the housing, the anti-rotation device comprising a bearing seated within the groove of the rack. The system yet further includes a delash bearing assembly in contact with the rack to radially bias the rack to a desired position.

According to the reverse type integrated miniature linear servo electric cylinder, the open end of a rotor shell in a power transmission mechanism is fixedly connected with a planet retainer through a coupler, and the planet retainer is directly driven by adopting integrated treatment of the motor rotor shell and the planet retainer; after power transmission of the planet retainer, the output end is directly driven to realize linear motion without adding a speed reducing mechanism in a power transmission system of the electric cylinder, so that the internal space, occupied by the power transmission mechanism, of the electric cylinder is greatly reduced, the electric cylinder can be developed to a smaller and more compact structure, and the cost can also be saved; and moreover, the energy utilization rate of the electric cylinder is improved, the electric energy consumption of the electric cylinder is saved, and better economic benefits can be generated.