175results about How to "Small drive torque" patented technology

The invention provides a wheel-foot conversion type mobile robot system, relating to mobile robots. The wheel-foot conversion type mobile robot system is used for solving the problems that the obstacle avoidance ability of the existing wheeled robots is poor and the walking speed of the existing footed robots is low. According to the wheel-foot conversion type mobile robot system, one end of each central axle is fixedly connected and is axially locked through a corresponding first limiting block, a shoulder is arranged at the other end of each central axle, a spring sleeves each central axle and is located between a corresponding bearing and the corresponding shoulder, a central blind hole is formed in the other end of each central axle, and a first key groove is formed in each central blind hole; semi-annular grooves are formed in fixed half wheels along the circumferential direction, movable half wheels and the fixed half wheels are in turning connection relatively to the central axles, complete wheels are formed by the fixed half wheels and the movable half wheels during the conversion to a wheeled state, the movable half wheels are turned into the semi-annular grooves of the fixed half wheels during the conversion to a footed state, and single scrolls are mounted on the central axles. The wheel-foot conversion type mobile robot system belongs to the field of the mobile robots.

The invention discloses a unicycle robot with the function of self-balancing realization. The unicycle robot comprises a wireless module, a gyroscope, a motion controller, and a servo driver. The servo driver includes an oscillating bar servo driver, a waist plate servo driver, a wheel servo driver, an oscillating bar, a waist plate, and a wheel; and the oscillating bar servo driver, the waist plate servo driver, and the wheel servo driver are respectively connected with the motion controller by leads. The gyroscope and an oscillating bar encoder collect a unicycle body gesture; a signal is fed back to the motion controller; the signal is processed by the control program and thus a control instruction is sent to the oscillating bar servo driver, the waist plate servo driver, and the wheel servo driver, so that the oscillating bar, the waist plate, and the wheel are controlled to rotate to adjust and control the gesture of the robot. According to the invention, the rotation inertia of the oscillating bar and the waist plate can be adjusted by an on-line way; the adjusting capability of the balancing and turning of the unicycle robot can be enhanced; and the aadaptability to the dynamic complex environment, of the robot can be improved.

The invention relates to a feed pre-positioning device for a molded plate. The device comprises a frame mechanism, a working table, two pulling plate mechanisms, a lateral limiting mechanism, a lateral pushing mechanism, a vibration positioning mechanism and a supporting plate driving mechanism, wherein the frame mechanism comprises a supporting frame, a gantry frame and two upper longitudinal beams; the supporting frame has a framework structure; longitudinal driving guide rails are fixedly arranged on two sides of the top of the supporting frame respectively; the gantry frame is arranged across the supporting frame; the working table is fixedly arranged on the supporting frame; the two upper longitudinal beams are connected with the gantry frame; each upper longitudinal beam is longitudinally provided with at least two rotary cylinders in the backward and forward direction; the rotary cylinders are provided with rotary arms; a cross beam of the gantry frame is provided with at leasttwo pulling plate mechanisms and the vibration positioning mechanism; and the lateral limiting mechanism and the lateral pushing mechanism are arranged on two side beams of the gantry frame respectively. The device has the characteristics of rational structure, accurate positioning in a slot sheet, capability of increasing cutting yield, high universality and capability of clamping the sheet and driving the sheet to advance.

The invention discloses a self-force-increasing type electronic-mechanic brake for an automobile. An upper friction plate and a lower friction plate are arranged at the two sides of a brake disc. The upper friction plate is fixedly mounted on a brake caliper body. The brake caliper body is mounted on a brake caliper bracket through guiding rods and can move axially on the guiding rods. A dust cover is arranged between the brake caliper body and each guiding rod. A first motor is fixed to a lower wedge block through first screws. The first motor is connected with a first threaded rod through a first coupling. The first threaded rod is in transmission connection with a push rod through a thread. In the braking process, the first motor drives the first threaded rod to rotate, the first threaded rod pushes the push rod to move in the horizontal direction, and furthermore, the push rod pushes an upper wedge block to move in the horizontal direction and the vertical direction; normal brake clearances are eliminated; and the lower friction plate is in contact with the brake disc, and braking is achieved. The self-force-increasing type electronic-mechanic brake for the automobile has the self-force-increasing function; the input torque of each motor can be greatly reduced; and meanwhile, the self-force-increasing type electronic-mechanic brake has the function that the clearance can be adjusted automatically, and wear of the friction plates is compensated.

The invention proposes a high-speed parallel robot driving system parameter optimization and selection method, which belongs to the field of robot technology and application. According to the method,an inverse kinematic model and an inverse dynamic model of a high-speed parallel robot are firstly determined, and the time which is taken by the robot to carry out a standard movement is adopted as an index for measuring the rapidity of the robot; the value range of the index and the value range of robot driving system equivalent inertia are set, and a parameterized performance atlas is drawn; the relation between robot rapidity and different motor powers, instantaneous maximum torques, rated torques, motor inertias and speed reducer reduction ratios is visually reflected by the performance atlas, and by comparing performance levels capable of being reached by the robot in cooperation with different servomotor and speed reducer combinations, an optimal servomotor and speed reducer combination is obtained. According to the invention, trial and error and repetitive verification are not needed, computational load is reduced, the efficiency of optimization is improved, the optimization and selection of motor and speed reducer parameters are guided by the actual performance of a robot, and the dynamic performance of the robot system can be effectively improved.

The invention discloses an active steering transmission for an automobile active steering system, comprising a mechanical transmission and a power driving device; the mechanical transmission comprises two groups of parallel NGW planetary gear drive transmission mechanism; a central gear and a first planetary gear and a first internal gear ring form planetary line I; the central gear, a second planetary gear and a second internal gear ring form planetary line II; two planetary lines share the same central gear; an input shaft is connected with a first planet carrier; an output shaft is connected with a second planet carrier; the second internal gear ring is fixed; the first internal gear ring is fixedly connected with a worm gear; a motor drives the worm gear to rotate. The transmission adopting mechanical connection has high safety; the power driving device drives the internal gear ring through the planet carrier to output, achieving active steering output, which is a deceleration transmission; the small driving moment of the motor and the worm and gear mechanism can reduce the size of mechanism, thus reducing cost and space.

The invention provides a seedling distribution device of a pot seedling transplanter. The device can be used for distributing seedlings at intervals and a seedling distribution action of separating the seedlings into two rows and enabling the seedlings to fall out from two seedling outlets is realized. The seedling distribution device has a simple structure and low cost; sectional materials are mainly used so that the production is convenient; a lower opening of a square pipe is inclined for 45 degrees so that the friction is reduced and a needed driving moment is small; and the 45-degree inclined angle is good for guaranteeing that postures of the seedlings in cups are kept at a vertical state and the postures of the seedlings are relatively good when falling out, and the position of a seedling falling-out point can be adjusted.

The invention provides an instrument holding mechanical arm used for a minimally-invasive robot, and relates to the instrument holding mechanical arm. The instrument holding mechanical arm solves the problems that the number of passive joints is large when an existing mechanical arm is arranged in a concentrated mode and the existing mechanical arm is large in overall size and low in rigidity when a passive arm is too long. The instrument holding mechanical arm comprises vertical horizontally-moving safety brake devices, passive joints, first joints, second joints and an integrated operative instrument drive device. One ends of the passive joints are arranged on the upper portions of the vertical horizontally-moving safety brake devices in a rotatable mode. One ends of the first joints are connected to the passive joints in a rotatable mode. One ends of the second joints are connected with the other ends of the first joints in a rotatable mode. The integrated operative instrument drive devices are arranged at the other ends of the second points. The instrument holding mechanical arm is used for operative instrument drive of the micro operative instruments of the robot.

The invention relates to a joint assistance adjusting device, which relates to a podosoma one and a podosoma two which are hinged through a joint rotating shaft. The joint assistance adjusting device comprises a torque adjusting device used for adjusting a joint rotating torque; two ends of the torque adjusting device are fixedly connected to the podosoma one and the podosoma two respectively; the torque adjusting device is a rotary joint assistance mechanism consisting of a cam and elastic parts; and an effective contour surface curve of the cam is obtained through reverse by numeric iteration according to a torque assistant function. The joint assistance adjusting device realizes a rigidity changing torsion elastic device through the cam so as to adjust the joint rotating torque, make the reduction of a joint rotating torque peak possible, and improve a joint rotating torque valley; therefore, a motor with smaller power and smaller maximum torque can be selected, the self weight of a joint mechanism is lightened, and the energy is saved; or the driving torque of artificial limb wearers is increased, so labor is saved.

The invention relates to a method for improving the driving stability of a motor vehicle, wherein driver-independent braking interventions are triggered when a critical driving situation is expected on the basis of route information and current position data of the motor vehicle. The invention also relates to a corresponding system. According to the invention, the driver specifies information on the friction coefficient to be maximally used via a human-machine interface, said friction coefficient being used as the basis for the prediction of a critical driving situation.

The invention relates to a crop clamping type intelligent topping device. The crop clamping type intelligent topping device comprises a fixing joint, a tobacco height recognition system, a clamping type topping mechanism, a cutter sterilization system, an automatic bud inhibitor spraying system, a lifting driving mechanism and a delivering and collecting device. The height recognition system calculates the height of crops, and a single-chip microcomputer control system controls the lifting driving mechanism to adjust the height of the topping mechanism. When the clamping type topping mechanism moves forward along a tractor, motors in left and right clamping transmission mechanisms drive two clamping belts to clamp crop tops, bottom cutters cut off the crop tops, and cut crop tops are clamped by the clamping belts on two sides and transported backwards and are automatically collected by the delivering and collecting device. The cutter sterilization system is used for spray sterilization of the cutters. The crop clamping type intelligent topping device has advantages that accurate topping and automatic collection of each crop can be realized, and cutter sterilization and bud inhibitor spraying can be completed.

The invention discloses a combined automobile handling device, which consists of a transverse mobile platform, a longitudinal mobile platform and a trailer tray elevating mechanism, wherein the transverse mobile platform completes the transverse handling of an automobile; the longitudinal mobile platform completes the longitudinal handling of the automobile; and the trailer tray elevating mechanism puts the automobile on a parking support. In the device, the combination of transverse and longitudinal mobile modules replaces the conventional complex omnidirectional movement device, and the device has the advantages of simple structure, high parking efficiency, low manufacturing cost and the like, and runs smoothly. The elevating mechanism of the device is in threaded transmission, is matched with a four-bar linkage and utilizes the advantage of threaded transmission boosting, so that the driving moment of a motor is reduced; therefore, the weight and cost of the motor are reduced; and compared with the conventional hydraulically driven elevating mechanism, the elevating mechanism has the advantages of low manufacturing cost and the like, and is easy to maintain.

The invention relates to an integrated surgical instrument drive device, in particular to an integrated surgical instrument drive device with a decoupling function so as to solve the problems that due to the arrangement mode of a drive motor of an existing surgical instrument, drive torque of joints is increased, a system shakes easily, and meanwhile translational motion of the surgical instrument is generally driven in a nut lead screw mode, which is unbeneficial for adjusting the position of the surgical instrument before an operation. The drive device comprises a power source assembly (A), a decoupling transition assembly (B), a connector assembly (C) and a plurality of winding wires (D). The power source assembly (A), the decoupling transition assembly (B) and the connector assembly (C) are sequentially staggered and stacked in a sliding mode from bottom to top, and connected through the winding wires (D) in a decoupling winding mode. The drive device is used for driving a surgical instrument of a robot surgical micro-instrument.

The invention discloses a portable detection device used for measurement of a train wheel tread outline. Through application of the device disclosed by the invention, the high-precision quick measurement of wheel tread wear can be completed. The portable detection device disclosed by the invention is realized by the technical scheme that a stepping motor is used to drive a screw rod and make a nut move along a wheel axis direction; and by a V-shaped spherical guide rail and a profiled motion mechanism, moving of the nut drives a laser displacement sensor to carry out two-dimensional motion in a plane passing a wheel axle, and tracks of the motion copy a standard tread outline of the wheel, so that the tread outline is scanned and measured point by point. The profiled measurement is realized, so that the sensor with a small measurement scope is needed to satisfy measurement requirements for the whole tread outline. Measurement accuracy and resolution are higher. Outline dimensions of an instrument are smaller. The sensor is installed and designed in an inclined manner, so that the problem that the measurement accuracy is reduced or even the measurement cannot be realized thanks to an oversized included angle between a measurement light beam and a normal line of a measured point at a place with a large rate of curve of the tread outline is solved.

The invention discloses an adjustable water nozzle for oilfield water injection and a water distributor with the same, and belongs to the technical field of oilfield separate zone water injection. The adjustable water nozzle comprises a valve sleeve and a valve core, wherein the valve sleeve has a cavity structure and is provided with a water outlet hole; the valve sleeve is in threaded fit with the valve core; the valve core is in seal fit with the conical surface of the water outlet hole of the valve sleeve; the head of the valve core is provided with a side hole; a cavity is formed betweenthe valve sleeve and the valve core outside the side hole; a water inlet hole is formed in the valve core; and the tail part of the valve core is provided with a claw. The water distributor has a tube-shaped structure; the adjustable water nozzle is vertically arranged on the side of the water distributor and is communicated with the inner wall and the outer side of the water distributor; a bridge channel for water injection is formed in the wall of the water distributor; and a water nozzle adjuster for controlling the adjustable water nozzle is arranged in the water distributor. The adjustable water nozzle and the water distributor can accurately control water injection rate and are suitable to be popularized in the technical field of the oilfield separate zone water injection.

The invention belongs to the field of new energy generation, in particular relates to a pitch varying mechanism for a horizontal shaft ocean current energy generation. The pitch varying mechanism comprises a first group of driving mechanisms, and multiple groups of implementing mechanisms placed in a hub, wherein the driving mechanism comprises a power mechanism, a shaft joint, a first gear shaft and a first gear; all the implementing mechanisms of the variable pitch mechanism are the transmission mechanisms comprising a second gear, a second gear shaft, a worm and worm wheel. The power mechanism is fixed in a primary shaft of an impeller; an output shaft of the power mechanism passes through the wall of the hub to extend into the hub; the first gear shaft, the first gear, the second gear, the second gear shaft, the worm and the worm wheel are orderly driven to act by the power mechanism, so that the pitch of the blade can be varied. In the invention, the structure that the power mechanism of the driving mechanism is arranged in the primary shaft is adopted to save the space in the hub; the worm wheel and the worm can be locked by self, so that the feathering of the blade can be carried out by the effect of the steam without extra limiting device.

A fuel supply device (1) that is constructed so as to be capable of supplying a high-pressure fuel inside a common rail (2), accumulating a high-pressure fuel having been sent under pressure from a fuel pump (6), can be supplied to an internal combustion engine by a fuel injection valve and where the fuel injection pump (6) has high-pressure plungers (61-64) whose high-pressure fuel injection timings are shifted from each other. A part or the whole of lines of high-pressure piping (11-14) for connecting fuel discharge ports (6P1-6P4) of the high-pressure plungers (61-64) to the common rail (2) are connected by connection piping (30-33). As a result, the high-pressure fuel from substantially one high-pressure plunger is sent using the plural lines of high-pressure piping to suppress a rise in a fuel pressure in the high pressure piping.

The invention discloses a V-shaped reciprocating air compressor for mini or small power. The compressor is provided with a crankcase. Four equal cylinder blocks are arranged in a V shape on two V-shaped planes of the crankcase. A left cylinder cover and a right cylinder cover are arranged on the left cylinder block and the right cylinder block respectively; air valve components are arranged between the cylinder covers and the cylinder blocks; a shaft pin parallel with a main axis journal is arranged on the upside of a crank in the crankcase, a rocker is inserted in the shaft pin through a pin hole with a bush on the top, and the lower end of the rocker body is sleeved on a bell crank by a slide block component; connecting bar pin holes are arranged on two sides of the rocker; short shaft pins of the connecting bar of a plunger are hung over the pin holes on the two sides of the rocker. According to the lever rule, when the air compressor is under work, the plunger force applies two opposite moments of force to a hinge pin of the rocker, that is, the moment of reaction at the support of the hinge pin of the top rocker and the moment of driving force which pushes the rocker by sides of the slide block. The reaction at the support reduces the moment of driving force; therefore, the air compressor saves energy as much as over 20 percent.

The invention discloses a supporting structure for a solar flat single shaft tracking system. The solar flat single shaft tracking system comprises a solar cell module and horizontal rotating shafts, wherein the horizontal rotating shafts and the solar cell module are fixedly connected as an integrated structure. The supporting structure comprises a support frame, a roller assembly and a connection shaft on the support frame, wherein the connection shaft connects the adjacent two horizontal rotating shafts; the shaft center of the connection shaft and the shaft center of the horizontal rotating shafts are not on the same straight line; after the connection shaft and the horizontal rotating shafts are connected, the connection shaft and the horizontal rotating shafts are displayed as a crankshaft structure integrally; and the connection shaft is arranged on the corresponding roller assembly. The supporting structure for a solar flat single shaft tracking system of the invention forms a crankshaft structure through coordination of the connection shaft and the horizontal rotating shafts integrally, thus being able to conveniently adjust the centre of gravity position according to the characteristics of the assembly, and at the same time the connection shaft rotates through the roller assembly on the support frame to convert the sliding friction of an existing structure into rolling friction, thus effectively reducing the driving moment.

The invention discloses a wheel foot switching mechanism for a mobile robot, and relates to the wheel foot switching mechanism. The problems that the obstacle avoidance ability of an existing wheeled robot is poor and an existing foot type robot walks slowly are solved. one end of a central shaft is fixedly connected and is locked axially through a first limiting block, the other end of the central shaft is provided with a shoulder, a spring sleeves the central shaft and is arranged between a first bearing and the shoulder, a center blind hole is formed in the other end of the central shaft, and a first key groove is formed in the interior of the center blind hole; a half-ring groove is formed in a fixed half wheel in the peripheral direction of the fixed half wheel, a moving half wheel is connected with the fixed half wheel in a rotating mode relative to the central shaft, when a wheeled type state is switched, a complete wheel is formed by the fixed half wheel and the moving half wheel, when a foot type state is switched, the moving half wheel rotates and is arranged in the half-ring groove of the fixed half wheel, and a single scroll is installed on the central shaft. The invention belongs to the field of the mobile robot.

The invention discloses a lever system for a pumping unit. The lever system comprises a main support, a walking beam, a horse head, a pull rod hinged at the other end of the walking beam, a first drive device, a detecting device which is arranged on a stand for detecting upward or downward state of the pull rod, a rail formed at the pull rod side of the walking beam, a sliding seat matched with the rail to form a rail pair, a counter weight arranged on the sliding seat, and a second drive device for driving the sliding seat to run according to the pull rod state detected by the detecting device to ensure that the sliding seat is close to a constraint hinge when the pull rod moves upward and the sliding seat is far from the sliding seat when the pull rod moves downward, therefore, the lever system has small energy consumption and smaller output power of a power output part.

The invention relates to a method for operating an internal combustion engine, wherein a crank housing (2) of the internal combustion engine comprises a ventilation (9) into the intake tract (10) of the internal combustion engine, characterized in that, during the outgassing of fuel from engine oil present in the crank housing (2), the operating point of the internal combustion engine is modified such that a predeterminable air / fuel ratio is not fallen below.

The invention provides a translational system of a pot body and a support of an intelligent cooking device. The translational system comprises the pot body, the pot body support and a main frame; the pot body is installed on the pot body support through a lower support and an upper support, the pot body support is rotatably installed on the main frame, the pot body can automatically rotate on the pot body support, and the pot body support and the pot body can roll over on the main frame; a left side shaft and a right side shaft are arranged at the two sides of the pot body support respectively, and are coordinated with a left side bearing and a right side bearing respectively, the left side bearing and the right side bearing are installed on a left side bearing base and a right side bearing base respectively, wherein the left side bearing base and the right side bearing base are arranged on two straight line slide rail pairs and corresponding slide blocks respectively, and the slide blocks are driven through a synchronous belt transmission mechanism. The translational system of the pot body and the support of the intelligent cooking device is used for driving the pot body to the appointed position to achieve the relevant function, the driving mechanism is adopted for achieving synchronous translation in the middle and at the two sides, and the stability and reliability are high; the mechanism wear is little, and the service life is long.

The invention discloses a road roller combining vibration, oscillation and complex excitation as a whole, which comprises a frame; an engine, a vibrating wheel, and a transmission part connected with the engine are disposed in the frame; a cab is disposed above the frame; the vibrating wheel comprises a vibrating wheel cylinder body; a center shaft is disposed at the center of the vibrating wheel cylinder body; four eccentric shafts are disposed around the center shaft with equal angles; the eccentric shafts are mounted on a supporting plate disposed on the vibrating wheel cylinder body; the end parts of the eccentric shafts are movably connected with driven pulleys; the driven pulleys are connected by a driving belt with driving pulleys which are disposed at the end part of the center shaft and at the same side as the driven pulleys; the driven pulleys are connected with a phase adjusting mechanism by gears at the end surfaces. The invention combines vibration, oscillation and complex excitation functions as a whole, enhances the application effect, expands the application scope, has a simple structure, is convenient for using, and is convenient for popularization and application.

The present invention relates to a method for starting an internal combustion engine of a hybrid power device and a control unit for starting the internal combustion engine. In the method for starting the internal combustion engine (16) of the hybrid power device, especially the internal combustion engine (16) with a direct injection device, the hybrid power device comprises the internal combustion engine (16) and an engine (14) to provide a drive power, wherein the internal combustion engine (16) is started by directly starting the injection of fuel into at least one cylinder (40,42) of a piston cylinder mechanism of the internal combustion engine (16) and ignition of a fuel-oxygen mixture generated in the cylinder (40,42), a crankshaft (20) of the internal combustion engine (16) is connected with the engine (14) by a clutch (26), and the closure of the clutch (26) is directly started to support the engine (14).

The invention discloses a novel down-mounting ball valve, which is characterized by consisting of a valve body, a valve core assembly, a rotating shaft sealing ring, a rotating shaft, a polytetrafluoroethylene gasket, a water outlet sealing ring, a lower valve cover end face sealing ring, a lower valve cover and a lower valve cover radial sealing ring. The novel down-mounting ball valve has the advantages that: the novel down-mounting ball valve assembly is arranged into an integrated meter shell of a water meter or a heat meter to realize integration of a flow meter and a control valve of the prepayment water meter and the prepayment heat meter; because of the integral structure, the strength, sealing property, high-temperature resistance and high-pressure resistance of the prepayment water meter and the prepayment heat meter are promoted, and the highest bearing pressure is more than or equal to 4MPa and far higher than the pressure limit of industrial standard high-pressure meter 2.5MPa (common heat meter 1.6MPa); on-line (use site) integral disassembly, maintenance and replacement can be performed; parts such as a speed reducer, a control circuit and the like driven by the ball valve are not involved during maintenance and replacement; and the operation is performed directly from the bottom of the ball valve, and disassembly of other parts is not needed.

The invention discloses a clutch with a gear rack and a planetary mechanism. The clutch comprises a clutch cover assembly mechanism and a clutch connection and disconnection operation mechanism, wherein the clutch cover assembly mechanism comprises a flywheel, a clutch cover, a transmission device input shaft, a driven disc and a pressing disc; the driven disc and the pressing disc are sequentially arranged on the transmission device input shaft; a hollow grooved cam is fixedly arranged at the end far from the flywheel of the clutch cover; a thrust sleeve is arranged on the transmission device input shaft in a rotating manner; the periphery of the thrust sleeve is in sliding connection with a driving neck through a spline; one end of the driving neck is fixedly connected with the pressing disc, and the other end of the driving neck is provided with a locating slider in sliding fit with a groove of the grooved cam; and a planetary gear mechanism is arranged between the pressing disc and the inner end surface of the clutch cover. Compressing force is linearly increased with the displacement of a separating bearing, and the power driving element of an operating mechanism is conveniently controlled, so that the reliability is high, and the service life is long. The power of the power driving element is low, so that the energy consumption of the system is reduced.

The invention aims at solving a technical problem that a tracking device that is used for the sun and a satellite and is capable of meeting application requirements of solar energy engineering and a satellite polar shaft antenna is needed to be provided. The tracking device comprises a load support, a tracking transmission mechanism, and a pedestal of the tracking transmission mechanism. The tracking transmission mechanism includes two moving shafts; one of the moving shafts is a polar shaft that is parallel to a rotation axis of the earth and is used for realizing motions at east-west directions and continuously tracking a change of an hour angle at a constant speed; and the other moving shaft is a declination shaft that is perpendicular to the polar shaft and is used for realizing north-south motions to change a declination angle. And the polar shaft and the declination shaft are respectively driven by a polar shaft tracking transmission mechanism and a declination shaft tracking transmission mechanism. According to the invention, the provided tracking device has the advantages of simple structure, low cost, reliable running, and low self power consumption and can be widely applied to solar energy engineering and satellite polar shaft antenna equipment.

The invention relates to an actuating device for a rotatable closure part of a valve, in particular a pneumatically or hydraulically actuatable rotary drive for a disk or throttle valve, with a housing, in which a drive piston that is sealed from a cylindrical housing casing is arranged and is suppliable on one side with a pressurizing medium, which preferably has a tubular piston skirt, with a drive shaft, which is guided on one side out of the housing and drives in a rotating manner the closure part indirectly or directly, wherein the drive piston executes either an axial shift movement against the effect of at least one return spring in the case of a one-sided supply with the pressurizing medium or a back and forth shift movement in the case of an alternating supply with a pressurizing medium, wherein the piston skirt experiences an axially oriented guidance in the housing via at least one axial groove formed in it, into which a straight-line guide cam permanently connected with the housing engages, and wherein the piston skirt has at least one helical groove arranged in it, into which a drive bolt permanently arranged on or in the drive shaft is arranged, so that the radially and axially mounted drive shaft experiences a rotation around the axis of rotation due to the axial shift movement of the drive piston oriented in the direction of its axis of rotation.

The invention relates to an actuating device for a rotatable closure part of a valve, in particular a pneumatically or hydraulically actuatable rotary drive for a disk or throttle valve, with a housing, in which a drive piston that is sealed from a cylindrical housing casing is arranged and is suppliable on one side with a pressurizing medium, which preferably has a tubular piston skirt, with a drive shaft, which is guided on one side out of the housing and drives in a rotating manner the closure part indirectly or directly, wherein the drive piston executes either an axial shift movement against the effect of at least one return spring in the case of a one-sided supply with the pressurizing medium or a back and forth shift movement in the case of an alternating supply with a pressurizing medium, wherein the piston skirt experiences an axially oriented guidance in the housing via at least one axial groove formed in it, into which a straight-line guide cam permanently connected with the housing engages, and wherein the piston skirt has at least one helical groove arranged in it, into which a drive bolt permanently arranged on or in the drive shaft is arranged, so that the radially and axially mounted drive shaft experiences a rotation around the axis of rotation due to the axial shift movement of the drive piston oriented in the direction of its axis of rotation.