436 results about "Electromagnetic clutch" patented technology

The invention discloses an all-electric turning execution mechanism and a turning anti-swing control method for a front wheel of an unmanned aerial vehicle, the all-electric turning execution mechanism comprises a motor, an electromagnetic clutch, a parallel gear box and an output gear, the electromagnetic clutch comprises a stator, a rotor and an armature, the stator is fixedly connected with a shell of the motor, and the rotor is connected with an output shaft of the motor; the armature is connected with a high-speed shaft of the parallel gearbox, and the output gear is fixedly connected with a low-speed shaft of the parallel gearbox. The motor, the electromagnetic clutch, the parallel gear box and the output gear are designed in an integrated mode, double optimization of the structure and functions is achieved, the number of parts and the connecting complexity are greatly reduced, and the requirements of the unmanned aerial vehicle for light weight and compact layout are met; by means of the connection and disconnection characteristics of the electromagnetic clutch, accurate active anti-swing and front wheel turning control can be achieved through linkage of the motor and the parallel gear box during power-on, and passive anti-swing can be achieved through a mechanical structure during power-off.

The utility model discloses an electromagnetic clutch, a transmission device and a vehicle, and the electromagnetic clutch comprises a transmission shaft which comprises a shaft body and a plurality of first splines arranged on the peripheral surface of the shaft body; the gear switching piece comprises a sliding sleeve and a plurality of second splines arranged on the inner circumferential surface of the sliding sleeve, the transmission shaft penetrates through the sliding sleeve, and the second splines are in sliding fit with the first splines in the axial direction; the excitation mechanism is used for driving the gear switching piece to move in the axial direction of the transmission shaft so as to be switched among different gears; the reset mechanism comprises two sets of reset assemblies arranged on the two opposite sides, in the axial direction of the transmission shaft, of the second spline, and the reset assemblies are used for driving the second spline to move in the direction of the other set of reset assemblies. According to the electromagnetic clutch, the overall structure is simple and compact.

The invention relates to the field of co-extrusion production control, and particularly discloses an efficient film bag feeding control system, which is applied to a multi-raw-material synchronous conveying device of a co-extrusion process, and comprises a full-link data acquisition module, a full-link data processing module and a full-link data processing module, the raw material characteristic parameters comprise a melting point T, a stacking density rho and a magnetic sensitive particle loading amount M; the instantaneous load pressure P of each raw material conveying channel, the temperature Tm of a co-extrusion die head melting area, the real-time thickness H of a co-extrusion film layer, stock bin liquid level data and motor rotating speed data are collected and integrated to obtain a full-link original data set; the single-drive linkage conveying mechanism comprises a main servo motor, a plurality of sets of electromagnetic clutches and a plurality of sets of spiral conveying assemblies, and the main servo motor drives a transmission shaft through a synchronous belt. According to the technical scheme, for the co-extrusion process, the multi-raw-material synchronous conveying precision can be matched, and the problems that parameter adjustment lags behind, adaptability is poor and a downstream process feedback closed loop is lacked are solved.

The utility model discloses an automatic window opening machine, and relates to the field of window opening equipment. The automatic window opening machine comprises a box body, a driving assembly, a speed reduction chain assembly, a transmission chain assembly, an electromagnetic clutch component and a fluid damping component, the speed reduction chain assembly is jointly driven by the first driving part and the second driving part, so that the power and the cruising ability of the window opening machine are improved; during window opening work, the electromagnetic clutch component is switched to be in the state that the input end of the transmission chain assembly and the speed reduction end of the speed reduction chain assembly are connected and combined so as to implement window opening work. The acting force of transmission of the transmission chain assembly is damped by the fluid damping part, so that the force transmission effect of the transmission chain assembly is relieved, and the risk that the speed reduction chain assembly and the transmission chain assembly are damaged is reduced. According to the automatic window opening machine, buffering damping is provided for power attenuation or power reverse change through the fluid damping component, damage to a transmission structure can be reduced, the service life of the window opening machine can be prolonged, and operation stability of the window opening machine can be improved.

The invention provides an electromagnetic clutch combination control method, a power system and a medium. The electromagnetic clutch combination control method comprises the steps that the real-time current of an electromagnetic clutch, the accelerator opening degree change rate and the vehicle speed are obtained; under the condition that the vehicle meets the pre-combination condition of the electromagnetic clutch, a first target value is determined according to the number of combination failures of the electromagnetic clutch, and current with the magnitude being the first target value is applied to an electromagnetic valve of the electromagnetic clutch so as to drive the electromagnetic clutch to be combined; under the condition that the real-time current of the electromagnetic clutch is larger than or equal to the first target value, preloading torque is determined based on the accelerator opening degree change rate and the vehicle speed; and controlling the output torque of the engine according to the preloading torque. The pre-combination time is shortened while successful combination of the electromagnetic clutch is guaranteed, and the dynamic property of the whole vehicle is improved.

The invention relates to the field of cranes, and provides a self-lubricating-based intelligent electric chain crane and control system.The self-lubricating-based intelligent electric chain crane comprises a machine body, a driving assembly and a chain wheel assembly which are connected, a chain is connected to the chain wheel assembly, a first bevel gear is fixedly connected to the chain wheel assembly, and a driving rod is rotationally connected to the inner wall of a machine cavity; an oil guide box, an oil storage box and a processing cylinder are fixedly connected to the inner wall of the machine cavity, the driven rod is rotationally connected to the oil guide box, a first one-way valve and a second one-way valve are connected to the inner wall of the oil guide box, and the oil storage box is fixedly connected with the oil guide box. The inner wall of the machine cavity is rotatably connected with a swing part through an automatic reset rotating shaft, the swing part is in rolling connection with a ball, the top wall of the treatment cylinder is slidably connected with two oil guide blocks, the oil guide blocks are connected with the inner wall of the machine cavity through elastic parts, and inclined plane parts are fixedly connected to the oil guide blocks. According to the chain self-lubricating device, the automatic avoiding function between the chain and a component is achieved, and meanwhile the chain self-lubricating function is achieved.

The invention belongs to the field of medical equipment, and provides an ultrasonic-guided automatic blood vessel puncture integrated device which comprises a wireless ultrasonic instrument, a button A and a button B are arranged on one side of the outer surface of the wireless ultrasonic instrument side by side up and down, a bearing support is fixedly installed at the bottom of one side of the wireless ultrasonic instrument, and a movable support is rotatably installed in the bearing support. A fixing groove is formed in the lower bottom face of the movable support, a driving mechanism is arranged in the fixing groove and comprises a micro hydraulic booster, the micro hydraulic booster is arranged in the fixing groove, and an electromagnetic clutch is installed at the output end of one side of the micro hydraulic booster; by means of the collaborative design of the driving mechanism, the puncture mechanism and button control, medical workers do not need to conduct collaborative operation with the two hands, the actions such as puncture needle core propelling and cannula deepening can be achieved by pressing the corresponding buttons, the operation process is simplified, and in the scene of war wound first aid and the like, a vascular access can be rapidly established, time is saved, and the treatment efficiency is improved.

The invention relates to the technical field of vehicles, and provides a vehicle power system which comprises a motor used for providing power for the system; the input shaft is used as the power input shaft of the motor; an outer ring of the one-way clutch is connected with a first transmission mechanism, and the first transmission mechanism is driven by the input shaft to move; an inner ring of the first transmission shaft is connected with a second transmission mechanism which is used for driving a tire to rotate; a driving friction wheel of the electromagnetic clutch is fixedly connected to the input shaft, and a driven friction wheel of the electromagnetic clutch is connected with the second transmission mechanism through a third transmission mechanism; according to the system, forward driving, backward driving, smooth upshift and downshift and reverse dragging working condition energy feedback of the vehicle can be achieved, meanwhile, the limp function is provided when the one-way clutch breaks down, the power transmission efficiency and the gear shifting smoothness are both considered, and the core requirements of new energy and hybrid vehicles for a power system are met.

The invention discloses an automobile thermal forming stamping die anti-sticking coating protection assembly, and relates to the technical field of automobile part production, the automobile thermal forming stamping die anti-sticking coating protection assembly comprises a die body, the die body is provided with an auxiliary mechanism used for protecting an anti-sticking coating, and the auxiliary mechanism comprises two electric push rods, two cylindrical holes, a storage tank and two sliding grooves. A first electric valve is installed at the output end of the storage tank, a double-shaft motor is arranged on the periphery of the storage tank, and a first pump head and a second pump head are installed at the two output ends of the double-shaft motor through a main electromagnetic clutch and an auxiliary electromagnetic clutch respectively. When the mold release agent is used, scratch and abrasion of impurities to the anti-mold-sticking coating are reduced through impurity cleaning, a film formed by spraying the mold release agent on the surface of the anti-mold-sticking coating not only can play a role in mold release and lubrication, but also can play a role in buffering the anti-mold-sticking coating, so that the service life of the anti-mold-sticking coating is prolonged, and frequent shutdown is avoided.

The invention discloses an unmanned aerial vehicle centering and locking platform and a control method, and belongs to the technical field of low-altitude economy and intelligent carriers. The platform comprises a platform body, a centering mechanism and a locking mechanism. The centering mechanism comprises an X-direction horizontal lead screw transmission unit and a Y-direction horizontal lead screw transmission unit, and the locking mechanism comprises a vertical lead screw transmission unit and a connecting rod pressing mechanism. The core is that a single direct current motor is adopted to drive a one-inlet five-outlet speed reducer, and power is selectively distributed to the transmission units in the three directions through five normally-open jaw electromagnetic clutches. According to the self-locking device, centering and locking are achieved through transmission of the trapezoidal lead screw, and the self-locking device has the advantages of being good in self-locking performance and high in rigidity; through cooperative control of a single motor and multiple clutches, X-direction centering, Y-direction centering and final locking of the unmanned aerial vehicle on the platform can be completed in sequence only through one driving link, the mechanical structure is simplified, the cost and weight are reduced, and the reliability and impact resistance of the system are improved.

The invention relates to the technical field of memory bank testing, in particular to a memory bank aging testing device and method.The memory bank aging testing device comprises a testing box, a testing cavity is formed in the testing box, a testing plate is arranged in the testing cavity, and a memory bank is inserted into the testing plate. A double-shaft motor is matched with an electromagnetic clutch to respectively drive a soaking mechanism and a heat recovery mechanism, a reciprocating screw rod drives an extension box to move up and down in a reciprocating manner, a toothed plate and a driving gear are in meshing transmission, so that a rotating pipe rotates while moving, and a spray pipe forms composite sweeping airflow; dehumidification and regeneration are synchronized through cooperation with continuous rotation of the rotary box, closed-loop air treatment is formed, dynamic and uniform distribution of hot air in the test cavity is achieved, temperature stratification is effectively eliminated, meanwhile, energy consumption is remarkably reduced through waste heat recovery and medium regeneration, and the test efficiency is improved. And high uniformity, high cleanliness and low-energy-consumption operation of a high-temperature aging test environment are guaranteed.

The invention discloses an automatic heightening and leveling chassis system of a hill and mountain tobacco transplanter and a control method, and relates to the field of agricultural machinery. The system comprises a chassis body, a power transmission system, an executing mechanism, a sensing system and a control system. A front wheel assembly of the chassis body is flexibly connected with a frame through a hinge mechanism, and a rear driving wheel assembly is provided with a hydraulic independent suspension. The sensing system comprises a six-axis tilt angle sensor and a height measuring assembly and is used for collecting tilt angle and ridge surface data in real time; the control system adopts a PID algorithm to drive the front wheel lifting assembly to adjust the pitch angle, the hydraulic independent suspension adjusts the roll angle, and the electromagnetic clutch realizes differential steering and turning around in a narrow space. The problems that traditional equipment is poor in terrain adaptability, insufficient in intelligence and the like are solved, transplanting uniformity and operation efficiency are improved, and the device adapts to complex terrains of hills and mountains.

The utility model relates to the technical field of rocking chairs for children, and discloses a rocking chair for children with a damping support structure, which comprises a base, a sleeve is fixedly assembled at the top of the base, a support strip is fixedly assembled on the outer wall of the base, a powerful motor is fixedly assembled at the top end of the sleeve, and an electromagnetic band-type brake is arranged on an output shaft of the powerful motor. According to the child rocking chair with the damping supporting structure, through the arrangement of the base, the mounting cylinder, the connecting ring, the sliding rod, the damping spring and the limiting ring, in the using process of the child rocking chair, when a carrier is influenced by counter-acting force and deforms, the carrier is prevented from falling off; a connecting ring exerts pressure on a sliding rod to enable the sliding rod and a limiting ring to move downwards along the outer wall of a limiting rod to compress a damping spring, so that the carrier is limited, vibration force is counteracted, the condition that the carrier is inclined is avoided, and then the comfort degree of a child in the shaking process is improved; and the stability of the carrier and the safety in the bearing process are also improved.

The invention relates to the field of mower control systems, and discloses a gasoline mower cutter soft start control system which comprises an engine, a spark plug, a cutter and an electromagnetic clutch coil which are arranged in a mower shell. The input signal acquisition module, the level conversion and shaping circuit, the single chip microcomputer and the power driving execution module are electrically connected with the spark plug. The single chip microcomputer comprises a rotating speed calculation unit and a core control unit, the rotating speed calculation unit is used for calculating the rotating speed of an engine according to digital pulses output by the level conversion and shaping circuit, and the core control unit selects a soft start control parameter set according to the rotating speed of the engine and outputs a multi-stage PWM control signal to the power driving execution module; the working current of the electromagnetic clutch coil is adjusted by the power driving execution module in stages, soft starting of the cutting knife from a static state to a working rotating speed is achieved, and mechanical impact and vibration in the starting process are reduced.

The present application belongs to the field of agricultural machinery, and relates to a kind of adjustable small particle quantitative fixed-distance separation mechanism, wheel disc fixing plate is installed between seed inlet and seed discharge pipeline below seed box, inner wheel disc is installed in the middle of wheel disc fixing plate, outer wheel disc is installed on the periphery of inner wheel disc, there is gap in outer wheel disc, gap corresponds to inverted trapezoidal recess opening of inner wheel disc, electromagnetic clutch is arranged on inner wheel disc, adjusting block is arranged at seed discharge port of inner wheel disc and outer wheel disc, there is self-adapting pad on adjusting block, adjusting spring is arranged in inner wheel disc below self-adapting pad;Sensor is installed on wheel frame of seeding machine, sliding block seat is arranged on sensor, fixed-distance adjusting sliding block is arranged in sliding block seat, one end of sensor is provided with wire harness end, sensor is connected with two wire harness ends on motor. Thus, on the basis of quantitative separation of small particle seeds, different plant spacing can be adjusted in real time, the problem of seed waste in early planting and the defect of manual control of seeding distance are solved, time and labor are saved, and planting efficiency is improved.

The application provides a single rudder machine control device for the posture and heading of an underwater vehicle or a towed body. The device can control the posture and heading of the underwater vehicle or the towed body by using a single rudder machine, thereby saving the installation space of the underwater vehicle or the towed body, reducing the weight of the equipment, and being simple in principle and reliable in operation. The control device comprises a shell, a rudder machine, three rudder plate shafts, three electromagnetic clutches, a first rotating arm and a second rotating arm. Each rudder plate is connected with a rudder plate shaft, each rudder plate shaft is connected with a rotating shaft through an electromagnetic clutch, two horizontal rotating shafts are coaxially connected through the second rotating arm, one end of the first rotating arm is connected with the vertical rotating shaft, and the other end of the first rotating arm is matched with the second rotating arm. When the second rotating arm rotates, the vertical rotating shaft connected with the first rotating arm can rotate around the axis of the vertical rotating shaft. The front end of the push rod of the rudder machine is hinged with the second rotating arm, and the second rotating arm can convert the linear motion of the push rod of the rudder machine into the rotation of the two horizontal rotating shafts around the axes of the two horizontal rotating shafts.

The invention discloses a coal mine inspection robot, and relates to the technical field of inspection. The robot specifically comprises a robot body and two walking assemblies, and a cavity is formed in the robot body; the two walking assemblies are symmetrically arranged on the two sides of the cavity of the machine body. Each walking assembly comprises a walking motor, and the motor drives the wheels and the crawler belts through two sets of independent transmission chains respectively. And the first transmission chain always drives the wheels to realize wheel type walking. And the second transmission chain is controlled by an electromagnetic clutch, and drives a crawler mounted on the swing arm during connection, so that crawler-type auxiliary driving is realized. The robot can adjust the grounding state of the crawler belt through the swing arm and switch to wheel type or wheel-crawler combined type walking, so that the equipment can flexibly adjust the walking mode according to the terrain difference, the swing arm can be used for assisting obstacle crossing, and the environment adaptability is remarkably enhanced.

The utility model provides a lightweight crane hoisting mechanism, which relates to the technical field of crane hoisting, and comprises a mounting plate, a fixing plate, a winding drum, a brake, a circular ring support shell, a driving roller, a driving assembly, an electromagnetic clutch, a detection assembly and a controller, after the steel wire rope is jammed, the device can quickly detect that the rotating speed of the winding drum is reduced through the detection assembly, and if the rotating speed of the winding drum cannot be recovered within a specified time range, the controller controls the electromagnetic clutch to be powered off, so that the driving roller and the winding drum are instantaneously disconnected; meanwhile, the brake immediately brakes to prevent the heavy object from falling, and the maintenance and replacement process of the steel wire rope and the winding drum can be carried out after the heavy object is transferred away through standby hoisting equipment, so that the service life of the driving assembly is prolonged, and the potential safety hazard of breakage of the steel wire rope is reduced to the minimum; according to the design, the hoisting mechanism of the crane can be automatically protected, so that the operation process of the hoisting mechanism of the crane is better.

The application discloses a kind of passive and active hybrid controllable joint assisted buffering device for wearable exoskeleton.It includes joint upper and lower connecting rod, gyro angle sensor, power mechanism and upper and lower connecting rod binding mechanism;Power mechanism includes motor, electromagnetic clutch, electromagnetic brake, buffering mechanism, gear transmission mechanism;When active assistance, buffering mechanism and joint lower connecting rod are isolated by electromagnetic brake, active flexion / extension movement of joint is realized by motor and electromagnetic clutch, and joint energy is enhanced;When passive buffering, motor and joint are isolated by electromagnetic clutch, passive torque force is transmitted to joint movement by buffering mechanism through gear transmission mechanism by electromagnetic brake.The application can realize active assistance of human joint by controlling the on-off of clutch and brake, does not hinder joint free movement without assistance, can introduce buffering to protect joint and motor in sudden situation such as falling, and has better man-machine cooperation and wearing safety.

An electromagnetic clutch is provided which includes—a selector sleeve arranged in a rotationally fixed manner on a first shaft and is adapted to be shifted linearly along the first shaft between an engaged and a disengaged state, a coupling body which is aligned coaxially to the first shaft, a stator which has a coil which serves to shift an armature ring linearly along the first shaft, the armature ring being mounted radially in an axial guide separately from the first shaft and the coupling body, wherein a shifting of the armature ring by the coil is also accompanied by a shifting of the selector sleeve. A method of closing and opening an electromagnetic clutch is also included herein.

The utility model provides a power-assisted integrated device control system, which relates to the technical field of new energy passenger cars and comprises a power steering pump, a brake power-assisted air pump, a high-low pressure double-source controller, a double-source motor, an electromagnetic clutch, a control interface module and a sensor. The power steering pump is connected with the double-source motor, and the double-source motor is connected with a crankshaft of the power brake air pump through the electromagnetic clutch. The high-low voltage double-source controller is electrically connected with the vehicle control unit through the CAN bus module, and the high-low voltage double-source controller is used for receiving an upper control signal and controlling the double-source motor to work according to the upper control signal; according to the power-assisted steering and braking device, a power-assisted steering device and a braking device are integrated, so that the whole vehicle is light in weight, meanwhile, the automatic control and adjustment functions are achieved, and the purposes of reasonably using energy, saving energy and reducing emission are achieved.

The invention relates to fabric treatment equipment and a control method in the technical field of fabric treatment equipment, the fabric treatment equipment comprises an electromagnetic clutch, and the electromagnetic clutch comprises a coil; the heat dissipation system comprises a heat exchanger in thermal coupling relation with the coil and a cooling medium pipeline communicated with the heat exchanger, a cooling medium is input into the heat exchanger through the cooling medium pipeline to exchange heat with the coil, coil heat dissipation is achieved, and the cooling medium after heat exchange is discharged out of the heat exchanger through the cooling medium pipeline. The heat exchanger is matched with the cooling medium pipeline to construct a circulating heat dissipation system, so that the heat dissipation efficiency of the electromagnetic clutch coil in the fabric treatment equipment is effectively improved, the performance stability of the electromagnetic clutch is guaranteed, the service life of the electromagnetic clutch is prolonged, and meanwhile, the overall reliability of the fabric treatment equipment is also improved.

The invention provides an oil-gas pump all-in-one machine and a vehicle, and the oil-gas pump all-in-one machine comprises a driving motor which is provided with a driving shaft with two output ends; the steering oil pump is connected with a shell of the driving motor, and an input shaft of the steering oil pump is connected with the first end of the driving shaft; an input shaft of the air compressor is connected with the second end of the driving shaft through an electromagnetic clutch; the pressure sensor is connected with the steering oil pump, and the pressure sensor is used for detecting the pressure of an oil outlet of the steering oil pump; the controller is connected with a shell of the driving motor, the controller is electrically connected with the driving motor, the pressure sensor and the electromagnetic clutch, the controller is used for regulating and controlling the rotating speed of the driving motor according to the pressure of the oil outlet, and the controller is further used for controlling combination and separation of the electromagnetic clutch. According to the scheme, dynamic adjustment of the oil pressure of the steering oil pump is achieved, and the technical problem that dynamic control over the oil pressure of the steering oil pump cannot be achieved in the prior art is solved.

This application discloses a monostable electromagnetic clutch, including a movable part, a magnetic assembly, a fixed disk, and several iron cores. The magnetic assembly is connected to the fixed disk, and the iron cores pass through the magnetic assembly and are connected to the fixed disk. An elastic component is provided on the movable part. Under the action of the electromagnetic force of the magnetic assembly and the elastic force of the elastic component, the movable part can reciprocate on one side of the magnetic assembly, keeping the movable part engaged or disengaged from the iron cores. This application features a flexible and compact structural design, allowing for different combinations depending on the application and available space. It can be used individually or in combination of several basic electromagnetic clutch units. After combination, it can be freely arranged in various installation positions and spaces according to requirements, fully optimizing the use of space.

The application discloses a liquid heavy metal cooling micro small reactor control rod drive mechanism which is composed of a motor drive transmission mechanism, an outer cylinder, a supporting cylinder, a rod position measurer, an electromagnetic clutch mechanism, a screw rod connecting rod, a guide pipe and a gas protection system; a speed reducer and a drive motor in the motor drive transmission mechanism are installed upside down at the lower end of a gear transmission box in sequence, a rotating cylinder is coaxially installed in the outer cylinder and is installed at the lower end of the gear transmission box through a connector at the upper end; the rod position measurer is fixedly installed on the outer wall of the outer cylinder; the electromagnetic clutch mechanism is fixedly installed at the lower end of the outer cylinder and the rotating cylinder; the lower end of the screw rod connecting rod is fixedly connected with a control rod, and the upper part is in screw thread cooperation with a ball nut of the electromagnetic clutch mechanism. The single motor and the electromagnetic clutch mechanism are adopted, the liquid heavy metal buoyancy is fully utilized, the spring is assisted, the control rod adjusting and falling rod functions are realized, the height and weight above the top cover are reduced, the metal vapor is avoided from escaping through the gas protection system, the structure is compact, and the safety and reliability are high.

The utility model provides a composite tooth type electromagnetic clutch with a braking function, which comprises a driven fluted disc which is fixedly connected with a power output end and is provided with first meshing teeth, an inner ring which is fixedly connected with a load input end, and a magnet yoke which is fixedly connected with a rack and is provided with second meshing teeth, the movable disc is arranged between the magnet yoke and the driven fluted disc and is provided with third meshing teeth and fourth meshing teeth; a coil is arranged on the magnet yoke; the movable disc and the inner ring are connected through a spring piece, and an elastic piece is arranged between the movable disc and the inner ring. The clutch has dual functions of a clutch and braking. Compared with an existing friction mode, through the meshing mode of the meshing teeth, abrasion is greatly reduced, the service life is prolonged, the torque is large, the transmission torque is large, the structure is simple, installation is convenient, and later maintenance is also convenient.

The utility model discloses a miniature clutch device based on magnetic circuit control, which comprises an input end coil, an output end coil, a rotating piece, a hard magnetic clutch sliding block, a clutch connector and a self-locking piece, the clutch connector is provided with a joint groove, and the self-locking piece comprises a permanent magnet piece and a locking piece used for magnetic isolation. A mounting groove communicated with the joint groove is formed in the circumferential groove wall in the joint groove, the locking piece is movably assembled in the mounting groove, and the output end coil is sequentially electrified to form two magnetic fields in opposite directions to be respectively applied to the permanent magnet piece; the hard magnetic clutch sliding block is driven to be switched between a separation position where the hard magnetic clutch sliding block is prevented from being connected with the connecting groove and a connecting position where the hard magnetic clutch sliding block is allowed to be connected with the connecting groove, and at least a magnetic field formed by electrifying the input end coil is applied to the hard magnetic clutch sliding block, so that the hard magnetic clutch sliding block extends out when the locking piece is switched to the connecting position; in this way, the clutch function is achieved through electromagnetic interaction, the working current is small, and the electromagnetic clutch is applied to the harsh environment.

The utility model discloses a high-performance permanent magnet bistable electromagnetic clutch, which belongs to the field of clutches and comprises a driving end face wheel and a driven end face wheel which are meshed with each other, and a shaft rod end of the driving end face wheel and a shaft rod end of the driven end face wheel are provided with a driving shell and a driven shell which are hermetically connected through a bolt structure. Compared with the prior art, the device has the advantages that the clutch state fixing assembly for limiting the opening and closing states of the clutch is designed to be of a pure physical structure, and the magnetic clamping block is pulled to move horizontally along the plane end of the sliding groove of the L-shaped limiting rod through magnetic force generated by the electromagnet; therefore, the limiting rod at the outer wall end of the movable armature can conduct positioning sliding along the vertical end of the L-shaped limiting rod sliding groove, when the electromagnet loses power, the magnetic clamping block continues to abut against the limiting rod under the action of the non-magnetic spring, and therefore the state of the clutch is fixed.

The utility model discloses cable sheath take-up equipment and a chuck device thereof. A winding supporting structure is arranged on the periphery of a fixing ring, and a clamping assembly is used for clamping a clamping structure at the end of a sheath; the driving motor drives the fixing ring to rotate through the driving gear, and the driving motor and the driving gear achieve rotating clutch through the electromagnetic clutch. Before the sheath is taken up, the clamping assembly clamps the end of the sheath, the driving motor drives the fixing ring to rotate through the driving gear, the front end of the sheath is wound on the periphery of the fixing ring before take-up, automatic head reserving is achieved, and the driving gear is separated from the motor and rotates along with the cable disc together with the fixing ring to take up the cable during take-up. Driving and separation of the driving motor and the driving gear are achieved through the electromagnetic clutch, it is guaranteed that the driving gear and the fixing ring are always in a meshed state in the working process, and the influence of separation and reunion of the driving gear and the fixing ring on matching precision and service life is avoided.

The application discloses a variable speed system and an all-terrain vehicle, and the variable speed system comprises a box, an input shaft, a free gear, a synchronous gear, a shift fork shaft, a shift fork and an electromagnetic clutch assembly. The box is arranged to form a containing cavity. The input shaft is installed on the box. The free gear is installed on the input shaft and is in clearance fit with the input shaft. The synchronous gear is connected with the input shaft through a spline and can move along the input shaft in the axial direction to make the synchronous gear engage or separate from the free gear. The shift fork shaft is fixed to the box, and the shift fork is sleeved on the shift fork shaft and can move along the shift fork shaft in the axial direction. The electromagnetic clutch assembly comprises two electromagnetic clutches arranged along the shift fork shaft in the axial direction, and the shift fork is located between the two electromagnetic clutches. The electromagnetic clutches are switched to switch the combination of the synchronous gear and the free gear. Through the above arrangement, the structure of the variable speed system is simpler, and the overall cost is lower.