637 results about "Electromagnetic clutch" patented technology

The invention discloses a motor-clutch time division multiplexing driving system for a rope-driven dexterous hand. The motor-clutch time division multiplexing driving system comprises a driving box, a plurality of rope-driven mechanisms and a plurality of dexterous fingers, wherein the rope-driven mechanisms and the dexterous fingers are arranged on the driving box; the rope driving mechanism comprises a power unit, a worm and gear unit and a guide unit. The power unit uses a sun gear to drive a plurality of planetary gears, and an electromagnetic clutch outputs power to the worm and gear unit; the plurality of worm and gear units are respectively used for controlling the winding and unwinding of the plurality of driving ropes; the plurality of guide units respectively guide the plurality of driving ropes to the same rope-driven rotating joints of the plurality of dexterous fingers; different rope-driven rotating joints of the dexterous fingers are controlled by different rope-driven mechanisms, and the same rope-driven rotating joint of the multiple dexterous fingers is controlled by the same rope-driven mechanism. According to the scheme, the fast switching characteristic of the electromagnetic clutch is ingeniously utilized, and driving control over multiple degrees of freedom by a single motor is achieved.

The invention relates to an adjustable electric intracavity cutting stitching instrument, and relates to the technical field of stitching instruments. The device comprises a handle, a rotating head, a suturing rod and a suturing head, the suturing rod is connected with the handle, the suturing rod is sleeved with an outer pipe, the handle is used for driving the outer pipe to move in the length direction of the suturing rod, and the rotating head is rotationally connected to the handle, fixed to the outer pipe and used for driving the outer pipe to drive the suturing rod to rotate. The sewing head is rotatably connected to the end, away from the handle, of the sewing rod through a rotating assembly, a driving assembly is arranged on the sewing rod, connected with the rotating assembly and used for driving the rotating assembly to rotate, a handle and a rotating motor are arranged on the rotating head, the rotating motor is connected with the driving assembly through an electromagnetic clutch, and the handle is rotatably connected to the rotating head. And the base is fixed with the driving assembly. According to the invention, manual or automatic adjustment can be carried out according to conditions so as to realize the effect of accurate control or rapid control.

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 invention discloses a driving and braking integrated electric wheel system with a multi-connecting-rod type braking function. A wheel unit, a planetary gear reducer, a multi-connecting-rod type braking system, a hub motor, a wheel support and an electromagnetic clutch are integrated. According to the system, the working state of a hub motor is controlled to be matched with an electromagnetic clutch to conduct multi-mode switching, the five working modes of driving, pure electric braking, composite braking, reversing braking and parking braking can be achieved, a gear ring structure is machined on the inner edge of a rim of a wheel unit, the utilization rate of the space in a wheel is increased, and the service life of the wheel unit is prolonged. Meanwhile, the hub motor serves as a multiplex power source for driving and braking work and is matched with a multi-connecting-rod transmission scheme adopted by the braking system, the driving and braking integrated function can be achieved, the energy utilization rate of the whole vehicle is improved, a conventional braking execution motor and a speed reducer thereof are omitted, sprung mass is greatly reduced, and the cost is reduced. The control performance and the driving smoothness of the whole vehicle can be improved, and great significance is achieved for high-integration and modularization research of the distributed driving technology.

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

The invention discloses an electromagnetic clutch type hydraulic retarder, and particularly relates to the technical field of hydraulic retarders, the electromagnetic clutch type hydraulic retarder comprises a retarder body and a control module, the control module is connected with an electromagnetic clutch, an electromagnetic air proportional valve, a water temperature sensor, an oil temperature sensor and a pressure sensor through wire harnesses, the water temperature sensor is installed on a cooling water outlet pipeline of the heat exchanger, the pressure sensor and the electromagnetic air proportional valve are installed above the oil supplementing tank, the electromagnetic clutch is located between the driving gear and the transmission shaft, the driving gear and the transmission shaft are coaxially connected with the electromagnetic clutch, the transmission shaft is fixedly connected with the rotor, and the stator is fixed to the shell. Combination or separation of the driving gear and the rotor is achieved through the electromagnetic clutch, a floating ball valve, a forced lubrication structure and a stator and rotor disengagement structure are omitted, and the electromagnetic clutch has the advantages of being low in no-load power loss, fast in response, free of the oil injection phenomenon, simple in structure, low in failure rate, low in cost and weight and the like.

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.

A passenger car multi-system integration system includes at least an air compressor and a liquid tank. The air compressor and the liquid tank have exterior walls that at least partially contact. During operation of the air compressor, heat as a byproduct is transferred from the air compressor to the liquid tank by conduction, and is then transferred to the contents of the liquid tank by convection. The passenger car multi-system may also include at least one electromagnetic clutch in communication with the motor and the air compressor or the motor and a water pump, such that power can be optionally directed to the air compressor or the water pump during operation of the motor.

The present invention discloses an FES cycling control method, system, electronic device, and computer program product, relating to the technical field of rehabilitation training methods. The FES cycling control method combines a flywheel, an electromagnetic clutch, and a bicycle crank to provide an FES cycling control method for the quadriceps femoris of patients with spinal cord injury. This method addresses technical difficulties in FES-based fixed cycling rehabilitation exercises, such as the limited torque of electrically stimulated muscles, the difficulty of precise control of muscles as nonlinear elements, and the tendency for long-term continuous electrical stimulation to induce muscle fatigue. The practical effects of FES-based fixed cycling rehabilitation exercises still need to be improved. Compared with traditional electrical stimulation treatment methods, the present invention effectively reduces the intensity of electrical stimulation, improves energy utilization, and achieves energy-saving effects while ensuring rehabilitation needs.

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 relates to the technical field of ball nut machining equipment, and discloses a ball nut thread milling device which comprises a machine tool, a mechanical arm is arranged on the outer wall of the machine tool, a fixing frame is arranged on the outer wall of the mechanical arm, a fixing pipe is fixedly connected to the interior of the fixing frame, and a cutter head is fixedly connected to the outer wall of the fixing pipe. A motor is fixedly connected to the upper surface of the fixing frame, a transmission mechanism is arranged at the output end of the motor, a sleeve is connected to the transmission mechanism, the inner wall of the sleeve is rotationally connected to the outer wall of the fixing pipe, and the outer wall of the sleeve is rotationally connected to the interior of the fixing frame. Power output by the motor is transmitted to the sleeve through the transmission mechanism, the sleeve drives the second driving gear to rotate, the driven shaft is controlled by the electromagnetic clutch to be connected with the milling cutter or the grinding wheel, a machining cutter can be rapidly replaced, the working efficiency of ball nut thread milling and grinding is remarkably improved, and the time cost of manual intervention and cutter replacement is reduced.

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 relates to a tractor chassis gear shifting valve group which comprises a proportional pressure reducing valve, an electromagnetic clutch valve, a logic valve, an overload valve and a logic valve pressure regulating valve. The logic valve is arranged in a main oil way of the hydraulic system and used for controlling system pressure. The logic valve pressure regulating valve is connected with the logic valve and is used for regulating the working pressure of the logic valve; the proportional pressure reducing valve is arranged on the main oil way and used for controlling the opening and closing states of the gear shifting clutch. The electromagnetic clutch valve is arranged in the main oil way and is used for performing clutch control on the gear shifting system; the overload valve is connected to the lubrication heat dissipation oil way and used for conducting pressure protection on the lubrication heat dissipation system. The stability of pressure and flow change can be improved, and the reliability of the power shifting valve group of the tractor is improved.

A passenger car multi-system integration system includes at least an air compressor and a liquid tank. The air compressor and the liquid tank have exterior walls that at least partially contact. During operation of the air compressor, heat as a byproduct is transferred from the air compressor to the liquid tank by conduction, and is then transferred to the contents of the liquid tank by convection. The passenger car multi-system may also include at least one electromagnetic clutch in communication with the motor and the air compressor or the motor and a water pump, such that power can be optionally directed to the air compressor or the water pump during operation of the motor.

The invention discloses a semiconductor core part coating thickness accurate control device, and relates to the technical field of coating equipment, the semiconductor core part coating thickness accurate control device comprises a support, the top of the support is provided with a box body, and the inner side of the box body is provided with an automatic door opening emptying mechanism. According to the precise control device for the coating thickness of the semiconductor core part, through the part fixing and turning-over mechanism, a first double-shaft motor is arranged to serve as a single driving source, and through cooperation of a first electromagnetic clutch and a second electromagnetic clutch, fixing and loosening of the semiconductor core part are achieved; the clamping plates can synchronously drive the semiconductor core parts to rotate and turn over, so that the semiconductor core parts can be conveniently coated, and the problems that the device cost and the energy consumption are increased due to the fact that an existing device adopts a plurality of driving sources such as a double-head motor and two driving motors, the two driving motors are difficult to keep synchronous rotation, and the coating efficiency is high are solved. And when one of the driving motors breaks down, the semiconductor is easy to deviate and even fall off.

The invention provides a multi-end alternating type permanent magnet one-way driving device and a control method, and belongs to the technical field of permanent magnet driving. The device comprises an end A and an end B which are respectively provided with a rotor, an intermittent stator, a magnetic isolation layer, an electromagnetic clutch and a one-way rotating mechanism. A magnetic flux path is selectively blocked or conducted through the magnetic isolation layer, and dynamic coupling and decoupling of the electromagnetic clutch are combined, so that the double-rotor alternating working mode is achieved. The control system corrects the rotor phase difference in real time through a phase compensator and a Hall sensor, and continuous power output is ensured. The permanent magnet driving device solves the problems that an existing permanent magnet driving device is low in magnetic energy conversion efficiency and discontinuous in motion and has dead points, has the advantages of being efficient, capable of saving energy, stable in output, capable of achieving modular expansion and the like, and is suitable for scenes of new energy automobiles, industrial transmission, grid-connected and off-grid power generation and the like.

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 belongs to the technical field of vehicle-mounted refrigerators, and particularly relates to a drawer type vehicle-mounted refrigerator with double-mode opening and closing doors. The electromagnetic clutch consists of a belt driving wheel, a conversion shaft body, a bearing, a motor transmission shaft, an electromagnet, a movable pin shaft and an extension spring; a conversion shaft body is movably connected into a reserved groove in the belt driving wheel through a bearing, and the upper end of the conversion shaft body is connected with a motor transmission shaft. An electromagnet is embedded in the conversion shaft body; the bottom of a preformed groove in the belt driving wheel is connected with a pair of movable pin shafts through extension springs, the movable pin shafts are attracted by the electromagnets to be inserted into the bottom of the conversion shaft body, and connection between the conversion shaft body and the belt driving wheel is achieved. An electromagnetic clutch is used as a conversion medium for connecting a motor and a drawer; the switching between an automatic mode and a manual mode of the drawer is realized through an internal electromagnetic structure; the problems that a motor of an automatic drawer vehicle-mounted refrigerator is damaged and a door cannot be normally opened and closed in the automobile running process are solved.

The utility model provides an auxiliary hammerhead replacing device of high-viscosity waste metal physical chopping equipment, which comprises a chopping machine body lower base, a chopping rotor is arranged in the chopping machine body lower base, and the top of the chopping machine body lower base is hinged with a chopping machine body intermediate through a rotating shaft. A chopper body upper cover is arranged at the top of the chopper body middle body, and an overturning cylinder is hinged between the chopper body upper cover and the chopper body lower base; an auxiliary driving device is fixedly installed on a side face bottom plate of the lower base of the chopper body and connected with an electromagnetic clutch through a transmission mechanism, and the electromagnetic clutch is installed on a main shaft of the chopping rotor. The replacement device can assist in replacement of the hammer head when the chopping equipment is overloaded or blocked, a traditional manual rotating operation mode is replaced, the hammer head replacement efficiency is improved, the safety of hammer head replacement operation is guaranteed, and rapid recovery of production is promoted.

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.