3195 results about "Counter rotation" patented technology

The rotation shaft structure includes a main shaft assembly, and two folding assemblies that are symmetrically disposed with respect to the main shaft assembly. The two folding assemblies may rotate toward or against each other relative to the main shaft assembly. When the folding assembly is specifically disposed, the folding assembly includes a rotation assembly, a support plate, and a housing mounting bracket. The rotation assembly is rotationally connected to the main shaft assembly. The support plate is rotationally connected to the housing mounting bracket and slidably connected to the rotation assembly.

The shutdown of a compressor (10) installed in a refrigerant circuit (2) in air conditioning or refrigeration system is controlled so as to prevent unpowered reverse rotation of the compressor. Prior to terminating electric power to the compressor drive motor (24), the pressure within the system is relieved and substantially equalized across the compressor, thereby eliminating the possibility of unpowered reverse rotation of the compressor at shutdown. Pressure relief and equalization may be achieved by reducing the operating speed of the compressor to a low forward speed for a period of time prior to deenergizing the compressor drive motor. Pressure equalization may also be achieved by driving the compressor in reverse rotation prior to deenergizing the drive motor.

To provide a game machine capable of suitably increasing a degree of attention to a game.SOLUTION: While "opening operation" including "a correction variation 1" pattern executed when a left reel LR is stopped in a position in which a jackpot pattern deviates within a range of a first step to sixtieth step from a normal stop position on an effective line in a variable performance inversely rotates a middle reel CR and a right reel RR at rest in a normal position by one pattern space from an initial stop position while inversely rotating all the reels LR, CR, RR simultaneously when the opening is started, the left reel LR at rest in a first deviation amount position is inversely rotated by the number of steps obtained by adding one deviation amount step to one pattern space (namely, 20 steps) from the first deviation amount position.SELECTED DRAWING: Figure 115

Disclosed herein are a mode switching system and an exercise bike comprising the same that switches a non-freewheel mode and a freewheel mode automatically, ensuring improvement in user convenience. The exercise bike comprise a step motor, a first limit sensor sensing a first part of the face gear and outputting a first sensing signal, a second limit sensor sensing a second part of the face gear and outputting a second sensing signal, and a controller determining a current power transfer mode by using the first sensing signal and the second sensing signal, and rotating the step motor forward or reversely, based on the current power transfer mode, to switch the power transfer mode to the non-freewheel mode or the freewheel mode, in a case where a mode switching signal is input.

The invention discloses a fan cooling system, a control method and an inverter. The fan cooling system comprises a fan assembly, a controller, a power source, a radiator, a shell, a temperature monitoring module and a cover body. The rotating direction of the fan is changed in a specific mode, forward rotation and reverse rotation of the fan are achieved, accordingly, the airflow direction is changed, dust and sundries on the fan and the radiator can be automatically cleaned, the normal working time of a heat dissipation system is prolonged, the manual maintenance cost is reduced, and the product reliability is improved.

A two-way oil-collecting reducer and an electric vehicle. The reducer includes an input gear, an intermediate gear set, an output gear, and an oil sump, and the oil sump includes a radial sump opening and a circumferential sump opening. An orientation of the radial sump opening is away from the intermediate gear set along a radial direction of the intermediate gear set. An orientation of the circumferential sump opening faces the output gear along a circumferential direction of the intermediate gear set. The radial sump opening and the circumferential sump opening are formed at the oil sump, so that the oil sump can collect lubricating oil churned by a gear train when the input gear drives, via the intermediate gear set, the output gear to rotate forward or reversely, to increase an amount of lubricating oil collected by the oil sump.

Apparatus and methods for winding flexible material include a rotatable plate assembly rotatably driven by a first rotary shaft, the assembly supporting second and third rotary shafts with corresponding first and second mandrel parts mounted thereon. The first and second mandrel parts each form at least part of a winding spool. The second and third rotary shafts have rotational axes that are parallel to one another and parallel to, but laterally offset from, the rotational axis of the first rotary shaft. The rotation of the plate assembly is coordinated with counter rotation of the first and second mandrel parts. In embodiments, such coordinated rotation occurs during transition operations performed between winding operations that employ the first and second mandrel parts in an ordered sequence one after the other. The flexible material can be cable, wire, tubing, hose, rope, or other filamentary material. Other aspects are described and claimed.

A vibration test device includes a vibrating table on which an object to be vibrated is to be attached, an electric actuator that vibrates the vibrating table in a predetermined direction, and a controller that controls the electric actuator. The electric actuator includes an electric motor of which rotation can be switched between forward and reverse rotations, and a drive device that is supplied with electric power from a power source and controlled by the controller to supply driving electric power for vibrating the vibrating table at desired amplitude and frequency to the electric motor. The drive device includes a power regenerative converter that regenerates electric power that is not consumed by acceleration of the electric motor, among electric power regenerated from the electric motor when the vibrating table is vibrated at the desired amplitude and frequency, to the power source.

The invention relates to the field of mechanical oil extraction of oil fields, and discloses an energy consumption braking anti-reverse device and method for an electric submersible centrifugal pump directly driven by a permanent magnet motor. The control cabinet is arranged on the ground, is connected with the permanent magnet synchronous motor in the submersible permanent magnet motor direct-drive electric submersible centrifugal pump oil extraction system through a cable, and can monitor and respond to the working state of the permanent magnet synchronous motor in real time, so that the permanent magnet synchronous motor drives the electric submersible centrifugal pump to work; an energy consumption braking circuit and a motor monitoring protection circuit are arranged in the control cabinet; the motor monitoring protection circuit is used for monitoring and responding to the working state of the permanent magnet synchronous motor in real time; the energy consumption braking circuit is used for being connected when the permanent magnet synchronous motor loses power and consuming reverse electric energy generated by the permanent magnet synchronous motor in time when the permanent magnet synchronous motor rotates reversely. The problem that the service life of the motor is shortened due to the fact that electric energy generated by reverse rotation of the permanent magnet motor under the power-off condition is converted into heat energy to be consumed in the motor can be effectively prevented.

A fastener driving tool includes: an energy accumulation assembly, a striker, and a drive assembly which includes a power unit, a drive wheel, and a transmission construction, the power unit provided with an output shaft, the drive wheel fitted with the striker, the drive assembly provided with the transmission construction, the transmission construction having an engaged state and a disengaged state, the power shaft driving, via the transmission construction in the engaged state, the drive wheel to rotate forwardly so that the forwardly rotating drive wheel drives the striker and the piston to move upward to return in place; the transmission construction is in the disengaged state during a process of the piston driving the striker to move from a ready position to a striking position so that the drive wheel fitted with the striker may be driven by the downwardly moving striker to rotate reversely.

Can opener includes a shell, power mechanism, transmission mechanism, and cutting mechanism. The transmission mechanism includes a main drive gear, eccentric disc, and movable block. The main drive gear and eccentric disc are coaxially arranged, and the surface of the main drive gear facing the eccentric disc is provided with a linkage groove. The movable block is arranged on the eccentric disc in a liftable manner to insert into or withdraw from the linkage groove. One side of the movable block is provided with a first inclined surface and a first vertical surface, and the other side is provided with a second vertical surface. When the main drive gear rotates forward, the linkage groove abuts against the first vertical surface to drive the eccentric disc to rotate forward. When it rotates forward beyond the limiting position, the linkage groove slides relative to the first inclined surface to stop driving the eccentric disc to rotate forward. When it rotates backward, the linkage groove abuts against the second vertical surface to drive the eccentric disc to rotate backward.

A rotary wing vehicle includes a body structure having an elongated tubular backbone or core, and a counter-rotating coaxial rotor system having rotors with each rotor having a separate motor to drive the rotors about a common rotor axis of rotation. The rotor system is used to move the rotary wing vehicle in directional flight.

This invention discloses a press-to-rebound damping slide rail, belonging to the field of slide rail technology. The press-to-rebound damping slide rail of this invention includes a slide rail assembly and a press-to-rebound damping device. The slide rail assembly includes a fixed rail and a movable rail. The gearbox of the press-to-rebound damping device is equipped with a transmission gear and a clutch mechanism that mesh with a rack on the movable rail. In the first position, the gearbox has a rebound spring and a self-closing spring stretched and stored energy, and the gearbox is locked in the base. In the first position, the trigger part of the trigger transmission block is pushed by the trigger plate on the movable rail, causing the gearbox to unlock and rebound to the second position. The clutch mechanism locks the reverse rotation of the transmission gear and drives the rack and movable rail to rebound and move together. This invention organically combines the press-to-rebound mechanism and the damping closing mechanism, ensuring that the stability of their cooperation is not reduced by factors such as installation errors, making assembly simpler and more convenient, and guaranteeing product consistency.

The utility model provides a pipeline butt joint device, which relates to the technical field of heating and ventilation pipeline laying and comprises a supporting plate, two supporting blocks are fixedly connected to the upper surface of the supporting plate, and two-way lead screws are rotatably connected to the surfaces of one sides of the two supporting blocks through bearings. According to the utility model, the deflector rod is sequentially rotated according to the size of a pipeline, the adjusting plate is driven to rotate in the mounting pieces through the supporting ring and the sliding rail to move to an extension line of one end of the fixing column, then the pipeline is placed in the two mounting pieces, the two bidirectional screw rods are reversely rotated, and the two supporting blocks drive the two mounting pieces to be close to each other; one end of each fixing column is attached to the outer surface of the pipeline, after the fixing columns are stressed, the first springs are extruded through the push plates, the moving tracks of the fixing columns are limited through the limiting plates, the two-way lead screws are continuously rotated to enable the fixing columns to push the push plates to tightly clamp the pipeline, operation is easy, the structure is stable, and it can be guaranteed that ports of the pipeline are also kept aligned when the pipeline is staggered.

The invention relates to the technical field of die-casting machines, in particular to an automobile part die-casting machine capable of reducing heat residue, which comprises a die-casting machine body, the die-casting machine body comprises a base, a machine body and a die-casting assembly, the bottom of the machine body is fixedly connected with one end of the top of the base, and the die-casting assembly comprises an upper die, a turntable and a plurality of lower dies; the upper mold is installed on the machine body in a vertically movable mode, the rotating disc is installed on the top of the base in a horizontally rotating mode, the multiple lower molds are circumferentially distributed on the rotating disc, the bottoms of the lower molds penetrate through the rotating disc and are fixedly connected with the rotating disc, and the heat conversion assembly comprises an operation table, a chassis and a reverse linkage mechanism. In order to make full use of the heat exchange performance of cooling liquid, the chassis rotates clockwise while rotating anticlockwise through the reverse linkage mechanism, the cooling liquid and the lower die coaxially and reversely rotate, circulation is formed, the die is cooled and preheated, the die casting efficiency can be improved, and adhesion is prevented.

The invention discloses a sweeping robot control method and system, and the method comprises the steps: calling a pre-established fault feature library according to a fault type outputted by an abnormality recognition module, and carrying out the matching of corresponding abnormality feature data, and obtaining a preliminary abnormality confirmation result; according to the action recovery instruction, an execution unit of the sweeping robot is driven to adjust the wheel rotating speed or reversely rotate a brush, state feedback data after execution is obtained, and whether the recovery action is completed or not is judged; a new cleaning path scheme is generated according to the condition that the current obstacle avoidance capability is insufficient through a path adjustment demand, and the feasibility of an alternative path is determined; through real-time state data in a task execution process, cleaning efficiency and frequent fault problems are continuously monitored, a feature library is circulated, and operation stability is judged.

Disclosed is a method of fastening a cap of a container, the method including: specifying a screw thread engagement point of a cap and a neck ring of a container; and aligning the engagement point with a fastening start position of the cap and fastening the cap to the neck ring, in which the specifying of the engagement point includes detecting the engagement point by rotating the cap in a reverse direction in a state where the cap is seated on the neck ring.

The invention discloses a lifting platform for offshore pile top construction, and relates to the technical field of ocean engineering, the lifting platform comprises a main body mechanism, four lifting mechanisms are movably inserted in the inner surface wall of the main body mechanism, and two driving mechanisms are fixedly mounted on the outer surface walls of the four lifting mechanisms; the lifting mechanism comprises a fixing pile. According to the lifting platform, after the device is started, a motor can enable two half gears to synchronously and reversely rotate through a rotating shaft and a transmission gear, so that racks on the left side and the right side are sequentially driven to start to move, then the platform is driven to ascend and descend, and the platform is clamped by means of cooperation between two metal clamping blocks and positioning holes; compared with a traditional gear and rack clamping structure, the clamping tongue is matched with the fixing hole so that external interference can be better resisted and the stability of the lifting platform can be ensured on the sea where the environment is severe and stormy waves are large, meanwhile, the structure is relatively simple and reliable, the fault rate is low, and therefore the construction safety is improved.

There are provided sliding components that allow sliding surfaces to smoothly slide against each other regardless of whether a relative rotation direction is a forward rotation or a reverse rotation. The sliding components and include: a pair of sliding surfaces and disposed to face each other at a location where a relative rotation takes place when a rotating machine is driven. The sliding surface is provided with a first dynamic pressure generating groove communicating with a radially outer-side space and extending in one circumferential direction, a second dynamic pressure generating groove extending in the opposed circumferential direction, and a conduit groove communicating with the space. The conduit groove includes an annular groove and a communication groove communicating between the annular groove and the space. The second dynamic pressure generating groove is disposed closer to the space than the annular groove, and communicates with the annular groove.

An electric actuator includes an electric motor, a drive device that drives the electric motor to output a first rotary motion using power accumulated in a capacitor, and a motion converter that is coupled to the electric motor and converts the first rotary motion into a second rotary motion. The first rotary motion is forward and reverse rotary motions that are output by the electric motor as the drive device drives the electric motor to repeat forward rotation and reverse rotation. The second rotary motion is a unidirectional rotary motion. Regenerative electric power generated in the electric motor by the electric motor repeating the forward rotation and the reverse rotation is supplied to the capacitor.

The invention relates to an adjustable ultrasonic focusing treatment head, which is characterized in that a rotating ring is connected with a driving mechanism so as to drive each transducer to rotate inwards or outwards in a concave part at the same angle through forward or reverse rotation of the rotating ring by the driving mechanism, so that the included angles of the plurality of transducers are changed at the same time; in an initial state, the focuses of the plurality of transducers are focused on a point position on the central axis of the base to form a first energy field; in the first adjusting state, an energy field formed by intersection of the central axes of the transducers and the central axis of the base is close to the focuses of the transducers to form a fused second energy field; in the second adjusting state, the central axes of the transducers do not intersect with the central axis of the base, and the focuses of the transducers are close to form a third energy field. According to the adjustable ultrasonic focusing treatment head, different ultrasonic energy fields can be formed according to needs by adjusting the angles of the transducers at the same time, so that the number of treatment targets is reduced, and the time of an ultrasonic ablation operation is shortened.

Provided in the present invention is a gravity-free spring roller blind controller. The gravity-free spring roller blind controller comprises a torque adjustment assembly and a torsion spring connecting rod assembly. The torque adjustment assembly comprises a bracket, a torsion spring mounting seat, a guide sleeve, and a roller blind sleeve. A one-way torsion spring is sleeved on a mounting shaft of the torsion spring mounting seat, the guide sleeve is further rotatably sleeved with a torque adjustment knob, the guide sleeve is provided with a first flange, and a second flange is provided on the torque adjustment knob. The first flange reversely pushes the one-way torsion spring so that the one-way torsion spring is locked tightly onto the mounting shaft. According to the present invention, the torque of the torsion spring on the torsion spring connecting rod assembly is increased or decreased by forwardly or reversely rotating the second flange.

The invention discloses an overhead fan mounting structure and a range hood, belongs to the technical field of kitchen appliances, and aims to solve the problems that an existing range hood is lack of a self-locking structure and the like. The invention discloses an overhead fan mounting structure which comprises a fan case and a fan cover. The winding assembly comprises a cable, a wheel set, a winding shaft and a driving device, and the driving device is used for driving the winding shaft to rotate around the axis of the winding shaft; one end of the cable is connected to the hanging disc, and the other end of the cable is connected to the wheel set; and when the driving device fails, the self-locking assembly can enable the winding shaft to stop rotating. According to the overhead fan mounting structure and the range hood disclosed by the invention, when the driving device drives the winding shaft to rotate around the axis of the winding shaft, part of the cable is wound on the wheel set, so that the fan case gradually gets close to the hanging disc, and the mounting is more convenient. When the driving device fails, the self-locking assembly can enable the winding shaft to stop rotating, the winding shaft is prevented from rotating reversely under the gravity effect of the fan case, and the fan case is prevented from falling off.

The invention relates to an automatic press-fitting system for a rotor and a spline shaft, which is characterized in that a laser sensor is used for detecting the reflected light intensity difference of a tooth crest and a tooth groove, and a PLC (Programmable Logic Controller) calculates the angular deviation of the spline shaft in real time based on a difference signal and generates a rotation instruction; after receiving the instruction, the servo motor drives the spline shaft to adjust at a certain increment angle; the suction cup tool sucks the rotor end face through a vacuum suction cup and moves to the position coaxial with the spline shaft; and the servo press drives the rotor to press with constant pressure, the PLC synchronously analyzes the press-in force and displacement, when the displacement reaches a preset range, it is judged that meshing succeeds, and when the displacement does not reach the preset range, it is judged that tooth crest interference occurs, and a reverse rotation correction process is triggered. The system can realize high-precision angle detection and dynamic correction, improves the one-time success rate of engagement of the spline shaft and the rotor, is suitable for precision assembly scenes such as a new energy automobile electric drive system and an industrial speed reducer, effectively reduces the manual intervention cost, and improves the production takt time stability.

The invention relates to a treating agent and system for recovering the performance of a recoverable drilling fluid. The treating agent comprises an activating agent for recovering the performance of the recoverable drilling fluid, a modifying agent for recovering the performance of the recoverable drilling fluid and a stabilizing agent for recovering the performance of the recoverable drilling fluid. The system comprises a mixer, the mixer is communicated with a liquid inlet pipe capable of recycling drilling fluid, the liquid inlet pipe is respectively communicated with an activator solution storage device, a modifier solution storage device and a stabilizer solution storage device through pipelines, and a stirring device is arranged in the mixer. The activating agent, the modifying agent and the stabilizing agent are mixed into the recyclable drilling fluid to be treated to be uniformly stirred, and the mixer adopts a stirring device which rotates in the inner direction and the outer direction, so that the mixing efficiency of the activating agent, the modifying agent, the stabilizing agent and the recyclable drilling fluid is effectively improved. According to the method, the treatment effect is good, the high-value drilling fluid can be repeatedly used, the treatment cost of the recyclable drilling fluid is reduced, the treatment efficiency is improved, and the performance of the recyclable drilling fluid is rapidly recovered.

A reciprocating mechanism for driving a synchronous belt through forward and reverse rotation of a motor comprises: a mounting bracket, a motor, a grating, a slot-type opposing photoelectric switch, a control board, a Hall switch, a load, and a magnet. The mounting bracket is equipped with a driving wheel and a driven wheel, which driving wheel is connected to the driven wheel through the synchronous belt. A side of the mounting bracket is provided with the motor. An output shaft of the motor is connected to the driving wheel and extends to the other side of the mounting bracket. The other side of the mounting bracket is provided with the control board which is functionally connected to the motor. A lower end of the control board is provided with the slot-type opposing photoelectric switch which mates with the grating mounted on a free end of the output shaft of the motor. A plurality of the Hall switches are uniformly distributed along a length direction on a side face of the control board adjacent to the mounting bracket. The synchronous belt is provided with a load. A side of the load adjacent to the control board is provided with the magnet mating with the Hall switch. The present invention is characterized by a variable stroke, a long stroke, a low noise and smooth motion.

The invention relates to a winding method of an inductance coil, which comprises the following steps of: fixing a wire rod, hooking the wire rod by a crochet hook, hooking the wire rod by a wire hook, unhooking the crochet hook, lifting the crochet hook and reversely rotating by a certain angle to separate the crochet hook from the wire rod, and continuously rotating a wire hooking disc until one end of the wire rod with a wire end is completely wound on the periphery of the wire hooking disc. Winding: a wire clamping mechanism drives the wire to perform arc-shaped winding action, and the wire is moved to the position above the magnetic ring and crosses an inner hole of the magnetic ring; and the steps are repeated, so that the wire is uniformly wound on the magnetic ring. According to the wire winding method, the wire is wound on the periphery of the wire hooking disc, the size of the wire storage mechanism can be greatly reduced, the wire is in a controlled state in the winding process, the phenomena of winding, knotting and the like are avoided, the tail of the wire cannot float disorderly, and the problem that an insulating layer is scratched can be effectively solved. And a longer wire can be wound by using equipment with a smaller size, so that the space of a plant is saved.

A forced-entry-resistant sash lock includes a housing, shaft / handle member, cam member, and secondary cam. When the cam member is in the unlocked position, rotating the shaft causes secondary cam rotation initially being independent of the cam member, and subsequently the secondary cam's first contact surface contacts the cam member's first contact surface causing co-rotation of the cam member and engagement of its cantilevered arm's first engagement surface with an interior housing wall's first engagement surface to cause deflection of the arm, and continued shaft rotation returns the cantilevered arm to the undeflected position, whereat forced counter-rotation of the cam member towards the unlocked cam member position is prevented by the contact between the first contact surface of the secondary cam and first contact surface of the cam member and contact between the second engagement surface of the cantilevered arm and the second engagement surface of the interior wall.

Systems, methods, and devices are provided for a turbine driven pump gearbox. A turbine engine may drive a primary shaft having gears. The gears may selectably engage with gears of a secondary shaft that drives a machine (e.g., pump). By changing which gears of the primary shaft engage with which gears of the secondary shaft, a gear ratio may be changed. A power takeoff device (e.g., a generator) may be connected to the primary shaft and may be operated in reverse as a motor to rotate, slow, stop, and / or reverse rotation of the primary shaft. Brakes may be associated with one or more of the primary and secondary shafts. The power takeoff device and one or more of the brakes may be controlled to shift engagement of the shafts between different positions, changing the gear ratio and / or disengaging the shafts from each other.