34results about How to "Prevent flying car phenomenon" patented technology

The invention discloses a control circuit of a controller of an intelligent electric vehicle, which comprises a power supply, a microprocessor, a circuit of a Hall sensor, a power field-effect transistor, a driving circuit, a circuit of a work power supply, a relay protection circuit, a current sampling circuit, a fault detecting circuit and an original edge current-limiting circuit of the power supply, wherein the power supply, the relay protection circuit, a motor, the field-effect transistor and the current sampling circuit are connected sequentially; the circuit of the work power supply is connected with the power supply; the driving circuit is connected with the microprocessor and the field-effect transistor respectively; the microprocessor controls to drive the conduction of the field-effect transistor, so as to control the conduction of the whole loop; the circuit of the Hall sensor, the relay protection circuit and the current sampling circuit are connected with the microprocessor respectively; the fault detecting circuit detects whether all the circuits work normally or not; the fault detecting circuit is connected with the microprocessor directly; and the original edge current-limiting circuit of the power supply is connected with the power supply, the motor and the relay protection circuit respectively and directly. The control circuit has the advantages of stable performance, high security and precise control.

The embodiment of the invention discloses a runaway automatic protecting method for an electric bicycle and a controller. The method comprises the following steps: in an electric mode, monitoring the operating state of the electric bicycle; if the operating state is a non-riding state, triggering the electric bicycle to enter a runaway protecting mode, wherein a handle reversing operation signal input by a user in the runaway protecting mode is invalid; and receiving a runaway protection finish command input by the user, escaping the runaway protecting mode. According to the technical scheme disclosed by the invention, whether the electric bicycle enters the runaway protecting mode or not can be automatically judged to achieve an effect of pre-protection and avoid safety accidents or hardware damage, so that runaway protection of the electric bicycle is easily realized without adding the integral cost, and therefore, the safety of operation of the electric bicycle is effectively improved.

The invention discloses an anti-runaway protection system and method for a downward belt conveyor. The protection system comprises a damping device, a hydraulic execution subsystem and a control subsystem, wherein the damping device is used for braking running of the belt conveyor mounted on a downward inclined surface in parallel; the hydraulic execution subsystem is used for driving the damping device to move; the control subsystem is used for detecting and controlling the running state of the belt conveyor in real time; and the system is convenient to mount and operate. The protection method comprises steps as follows: 1, working condition information of the belt conveyor is acquired in real time, and the acquired information is stored and uploaded synchronously; 2, the revolving speed of a motor of the belt conveyor is analyzed and processed; 3, whether a power supply module of a power grid is powered off or not is judged; 4, the belt conveyor is controlled to brake and slow down intermittently; 5, the belt conveyor is controlled to shut down. The system is novel in design, the runaway phenomena of the belt conveyor can be detected and controlled, the belt conveyor can be protected to shut down stably under the condition of the power failure, the condition of runaway of the belt conveyor due to the dead weight of materials during the power failure can be avoided, and the use effect is good.

The invention discloses a PMSM (permanent magnet synchronous motor) load simulation system and a control method therefor, and the system comprises a load simulation PMSM, a load simulation motor drivecircuit, and a data collection control system. The load simulation PMSM is connected with the output end of the load simulation motor drive circuit, and the output shaft of a tested motor is connected with the output shaft of the load simulation PMSM through the shaft coupler. The data collection control system includes a microcontroller, and the input end of the microcontroller is connected witha three-phase current sampling circuit, a three-phase voltage sampling circuit, a speed sensor and a torque sensor. The load simulation motor drive circuit is connected with the output end of the microcontroller. The control method includes the steps: 1, data collection and transmission; 2, data preprocessing 3, the control of the load simulation PMSM in an SVPWM direct torque control mode. The system can accurately simulate a load under different working conditions, has simple method steps, is convenient to implement, and is convenient for popularization and use.

The invention discloses a control method and a control system for runaway of a diesel engine. The control method includes the steps: calibrating an angular acceleration threshold value according to start of the diesel engine to a critical runaway state; acquiring the current angular acceleration of the diesel engine in real time; and reducing the fuel oil supply quantity when the current angular acceleration is larger than the calibrated angular acceleration threshold value. The control method calibrates the angular acceleration threshold value, and a certain time interval is reserved from incontrollable rotational speed to rated rotational speed, so that measures can be taken in advance when the incontrollable rotational speed does not rise violently to the rated rotational speed, namely, using the control method can timely and properly handle a runaway failure in the earlier stage, and further runaway is timely and effectively avoided.

The invention discloses a safety braking protection system of an aerial ropeway slipping rope. When an aerial ropeway runs, a monitoring control system picks up speed signals in real time through a speed measurement element and simultaneously remembers monitored states. When dangerous slipping occurs, actuating signals are sent to a steel wire rope capturing device, and simultaneously a voice alarm device gives an alarm. When an excessive speed phenomenon occurs, the actuating signals are sent to a wheel side braking device, and simultaneously the voice alarm device gives the alarm. The safety braking protection system of the aerial ropeway slipping rope integrates monitoring and protection and effectively prevents galloping and slipping rope accidents.

The invention provides (a) rotating handle abnormity detection method, device and equipment. The method comprises the steps that when it is detected that a rotating handle signal is in an effective interval when a motor of a target vehicle is powered on, the rotating handle signal is set to be a preset value; after a brake handle signal is received, a motor is made to run based on operation of a user on a target vehicle rotating handle; the variable quantity of the rotating handle signal in the operation process of the motor is obtained, wherein the variable quantity represents the difference value of the turning handle signals obtained in two adjacent times; and the variable quantity is compared with an abnormal threshold value, and whether the rotating handle of the target vehicle is abnormal or not is determined according to a comparison result. By utilizing the embodiment of the invention, the target vehicle rotating handle abnormity can be accurately identified, the vehicle runaway is prevented from being out of control, and the safety of a user using the target vehicle is effectively ensured.

The invention discloses a wind driven generator yawing device capable of effectively withstanding strong wind attack. A connection arm is eccentrically mounted relative to a yawing rotary seat, a tail vane rotary sleeve is rotatably connected onto the connection arm and positioned behind the yawing rotary seat, and the tail vane rotary sleeve is in a tilted arrangement in a way that the higher the tail vane rotary sleeve is, the closer the tail vane rotary sleeve approaches to the side of the yawing rotary seat. A tail vane rod is fixed onto the tail vane rotary sleeve, a first limiting block and a second limiting block are positioned on two sides of the tail vane rod respectively and arranged on the connection rod, and a limiting plate is arranged on the tail vane rod. A tail vane plate is perpendicular to a vane rotation surface when the first limiting block and the limiting plate are in abutted connection. The tail vane plate is parallel to the vane rotation surface when the connection arm rotates relative to the tail vane rod to drive the second limiting block to be in abutted connection with the limiting plate. The wind driven generator yawing device has the advantages of simplicity, reasonability and compactness in structure, convenience in installation, low implementation cost, capability of automatically adjusting vane rotation speed according to wind speed, avoidance of galloping and the like.

The invention provides a motor controller, a range extender, an electric automobile and a range extender detection method. The motor controller comprises a detection device and a control switch, wherein the detection device comprises a rotation speed detection element and a bus voltage detection element; the rotation speed detection element is used for detecting a rotation speed of a power generator; the bus voltage detection element is used for detecting the voltage of a direct current bus; the control switch comprises an ignition power supply control switch and an oil injection power supply control switch; the ignition power supply control switch is used for controlling whether an internal combustion engine is ignited or not according to the rotation speed of the power generator and / or the voltage of the direct current bus; and the oil injection power supply control switch is used for controlling whether the internal combustion engine injects oil or not according to the voltage of the direct current bus. According to the motor controller, the range extender, the electric automobile and the range extender detection method, through mutual effect of the internal combustion engine and the power generator, electric energy is generated so that the motor controller controls the working of the internal combustion engine according to the detected voltage of the direct current bus and the detected rotation speed of the power generator so as to solve a problem that a battery pack and a load are damaged and on fire due to the over-high rotation speed of the power generator and / or the over-high voltage of the direct current bus; and therefore, the runaway phenomenon is avoided, and personal safety is guaranteed.

The invention discloses a wind-driven generator based on the spring characteristic to adjust a wind mouth, the wind quantity and the wind speed. The wind-driven generator structurally comprises a windspeed adjusting device, a wind-driven generator body and a high-strength supporting rack, wherein the bottom face of the wind-driven generator body is vertically connected with the high-strength supporting rack, and the wind-driven generator body is provided with the wind speed adjusting device. Compared with the prior art, the wind-driven generator based on the spring characteristic to adjust the wind mouth, the wind quantity and the wind speed has the beneficial effects that the size of a wind inlet mouth is adjusted utilizing the characteristic of being capable of equidistantly shrinks from one ring to another of springs, so that the wind inlet quantity is adjusted, and then control of the wind speed is realized, the wind speed is made to be not much more than the rated wind speed to avoid emergency brake failure of the wind-driven generator, so that appearance of the wind-driven generator coasters phenomenon is prevented, wind-driven generator damage can be avoided to a large extent, and minitype wind-driven generators on the coast are made to be also capable of running to generate electricity utilizing the wind energy during the summer typhoon high-incidence season.

The invention relates to an aerial ropeway wheel side braking device which is provided with a base. A pair of braking arms is symmetrically hinged to the upper portion and the lower portion of the base, a compression spring rod is connected between the braking arms, one end of each braking arm is correspondingly hinged to a braking block, the other end of each braking arm is correspondingly hinged to one end of a connecting rod, the other ends of the connecting rod are opposite and are hinged to connecting blocks, and the connecting blocks are hinged to an explosive-proof electric hydraulic driver. The aerial ropeway wheel side braking device is simple in structure, large in braking force and good in braking effect, can perform effective parking brake, and avoids galloping phenomena.

The invention discloses a mine cableway conveyed by a roller chain. the mine cableway comprises a power part, a conveying chain and a guide rail, wherein the power part comprises a motor, a reduction gearbox, a driving chain wheel and a driven chain wheel, wherein the driving chain wheel is connected with the driven chain wheel through a chain, a chain poking claw is arranged on the chain through a chain pin, and the conveying chain is formed by connecting roller chain rings and bidirectional connectors. The mine cableway has the following beneficial effects: firstly, as a roller wheel is adopted to convey the mine cableway, the transmission efficiency is high, and the galloping phenomenon caused by slip is avoided; and secondly, the chain cannot fall away during the operation in a track; moreover, arbitrary turn can be realized, and the mine cableway has a simple structure.

The invention discloses an electromagnetic gear motor with an electromagnetic protection structure and a use method thereof, and the electromagnetic gear motor comprises a supporting table, the top of the supporting table is provided with a supporting seat through a bolt, the top of the supporting seat is provided with a housing, the rear end of the housing is provided with a rear sealing cover through a bolt, and the front end of the housing is provided with a front sealing cover. A supporting bearing is installed on the inner side of the front sealing cover, a supporting ring is installed on the inner side of the rear sealing cover, a limiting bearing is installed on the inner side of the supporting ring, a rotating rod is installed on the inner side of the limiting bearing, and the rotating rod is installed on the inner side of the supporting bearing. By installing the weak magnetic relay, weak magnetic protection of the motor can be achieved by connecting the weak magnetic relay into a motor magnetic loop, in the starting and running process of the motor, when the weak magnetic current value reaches the action value of the weak magnetic relay, the relay is attracted, the normally open contact connected in series in the control circuit is closed, and the motor is started. And the motor is allowed to maintain normal operation.

The invention relates to the technical field of electric unicycles, and discloses an electric unicycle with a detachable handle. A connecting portion is arranged on the upper portion of a shell of the electric unicycle, and the connecting portion is detachably connected with the handle through a connecting part; the handle is of a telescopic structure, and an oval holding portion is arranged at the end of the handle; and an outward inclined angle exists between the holding portion and the handle. The electric unicycle can be conveniently carried, and a rapid-dismounting screw component is firm in fixation; tools are not needed, a beginner can conveniently hold the handle to assist body balance, the unicycle flying phenomenon is avoided, safety of a rider is improved, and two fixing devices are arranged on the upper portion of a telescopic rod, and can be fixedly connected with components such as a mobile phone and a camera so as to serve as snapshot rods, picture recording in riding and other actions.

The embodiment of the invention discloses a runaway automatic protecting method for an electric bicycle and a controller. The method comprises the following steps: in an electric mode, monitoring the operating state of the electric bicycle; if the operating state is a non-riding state, triggering the electric bicycle to enter a runaway protecting mode, wherein a handle reversing operation signal input by a user in the runaway protecting mode is invalid; and receiving a runaway protection finish command input by the user, escaping the runaway protecting mode. According to the technical scheme disclosed by the invention, whether the electric bicycle enters the runaway protecting mode or not can be automatically judged to achieve an effect of pre-protection and avoid safety accidents or hardware damage, so that runaway protection of the electric bicycle is easily realized without adding the integral cost, and therefore, the safety of operation of the electric bicycle is effectively improved.

The invention provides an anchor windlass, and belongs to the technical field of ship equipment. The anchor windlass comprises a rack, a speed reducing assembly, an anchor chain wheel, a driving device and a braking assembly. The speed reduction assembly is located on the rack and provided with an input shaft and an output shaft, the input shaft is in transmission connection with the driving device, and the output shaft is in transmission connection with the cable lifter; the brake assembly comprises a rotary disc, a first brake disc, a second brake disc and an adjusting part, the input shaft is fixedly sleeved with the rotary disc, the first brake disc and the second brake disc are located on the different sides of the rotary disc respectively, the first brake disc is located on the rack and abuts against the side face of the rotary disc, and the adjusting part is connected between the first brake disc and the second brake disc; and the adjusting part is configured to controllably adjust the distance between the first brake disc and the second brake disc. The cable lifter can be braked in the anchoring process, so that the phenomenon of overhigh anchoring speed is avoided, the galloping phenomenon is improved, a technician does not need to be on duty, and the anchoring operation difficulty is reduced.

The invention discloses a control method based on a six-degree-of-freedom serial robot that does not satisfy the Pieper criterion, and belongs to the technical field of robot motion control methods. The motion control method of the six-degree-of-freedom serial robot in the prior art is only applicable to the six-degree-of-freedom serial robot satisfying the Pieper criterion, and the control precision of the six-degree-of-freedom serial robot not satisfying the Pieper criterion is not high, and the control process is cumbersome. The present invention proposes a new analytical control method based on the same joint coordinate system. When establishing a coordinate system for a six-degree-of-freedom serial robot, all joint coordinate systems are consistent with the coordinate directions of the robot base coordinate system, and the "calibration method" is adopted " and "conversion method" to deal with the six-degree-of-freedom series robot that does not meet the Pieper criterion. High precision.

This invention provides a superfluous solenoid-drive device of the diesel-fuel oil pump rack. The device includes the hard surface and the executing agency in it, the inductive element, the locating guide mechanism. The executing agency includes the spigot shaft and the gag bit together with the loop outside the spigot shaft. The inductive element includes the sensor, the connected pressure pad and the attached spring of the sensor. The locating guide mechanism includes the positioning spring, the joint lever of the positioning spring and the steering bar. The loop mentioned is double winding and the sensors of the inductive element include two linear movement sensors, sensing lever and the joint lever of the sensor. This invention makes sure the rack drive device of the diesel-fuel oil pump can continue working through another loop and sensor when the single loop and sensor are broken. Meanwhile, it guarantees the reliability of the diesel-fuel machine and satisfies the special demand of the high-pressure oil pump towards the wire-drive device.

The invention discloses a wind driven generator yawing device capable of effectively withstanding strong wind attack. A connection arm is eccentrically mounted relative to a yawing rotary seat, a tail vane rotary sleeve is rotatably connected onto the connection arm and positioned behind the yawing rotary seat, and the tail vane rotary sleeve is in a tilted arrangement in a way that the higher the tail vane rotary sleeve is, the closer the tail vane rotary sleeve approaches to the side of the yawing rotary seat. A tail vane rod is fixed onto the tail vane rotary sleeve, a first limiting block and a second limiting block are positioned on two sides of the tail vane rod respectively and arranged on the connection rod, and a limiting plate is arranged on the tail vane rod. A tail vane plate is perpendicular to a vane rotation surface when the first limiting block and the limiting plate are in abutted connection. The tail vane plate is parallel to the vane rotation surface when the connection arm rotates relative to the tail vane rod to drive the second limiting block to be in abutted connection with the limiting plate. The wind driven generator yawing device has the advantages of simplicity, reasonability and compactness in structure, convenience in installation, low implementation cost, capability of automatically adjusting vane rotation speed according to wind speed, avoidance of galloping and the like.

The invention provides a diesel engine capable of preventing galloping. The diesel engine capable of preventing galloping comprises a damping device spindle, a diesel engine body, a diesel engine power output shaft, a diesel engine power tail shaft, a gear change mechanism, a rotating speed detector and a speed reducer. The diesel engine power output shaft is arranged at the right end of the diesel engine body. The diesel engine power tail shaft is arranged at the left end of the diesel engine body. A left end shaft of the gear change mechanism is connected with the damping device spindle. A right end shaft of the gear change mechanism is connected with the diesel engine power tail shaft. The diesel engine body drives the diesel engine power output shaft, the diesel engine power tail shaft, the gear change mechanism and the damping device spindle to rotate. The gear change mechanism comprises a shell, two stators, a rotor and exciting coils. The diesel engine capable of preventing galloping is simple in structure; the rotor and the damping device spindle generate damping simultaneously through electromagnetic vortexes generated by the rotor and the stators, so that the diesel engine body is prevented from continuing speeding up, and the diesel engine is prevented from galloping.

The invention discloses an impeller galloping control method in an aerodynamic performance experiment of a horizontal axis wind turbine. The method comprises steps that a reflective stripe is pasted on a transmission shaft of an experiment device in a wind tunnel, a laser rotating speed measuring instrument is arranged outside an observation window of the wind tunnel, and the reflective stripe is right opposite to the laser rotating speed measuring instrument; a wind tunnel is started, the rotating speed of the impeller is monitored through the laser rotating speed measuring instrument, a rotating speed change curve along with time is established in a computer, and the wind tunnel is closed till the impeller gallops; the galloping process is repeated after the blade mounting angle is adjusted; the computer automatically converts the rotation acceleration of the galloping at the moment before the galloping; an aerodynamic performance experiment is started, the rotating speed of an impeller is monitored in real time, the rotating acceleration at each moment is automatically converted by a computer, the rotating acceleration obtained in real time is compared with the rotating acceleration at the moment before galloping, and the output load capacity of an electric loader is controlled according to a comparison result; and when the real-time output load capacity of the electric loader reaches the total output load capacity set by the experiment, the comparison process is stopped, and the impeller enters a constant-speed rotation process from starting.

The invention relates to an accumulator car motor controller with a handle resetting function and belongs to the technical field of accumulator car control. The accumulator car motor controller comprises a brake detection device, a sensor resetting circuit, a system protection circuit, a control circuit and a handle, wherein the brake detection device and the sensor resetting circuit are connected with the system protection circuit which is connected with the control circuit, and the control circuit is connected with the handle. The accumulator car motor controller with the handle resetting function has the advantages of effectively preventing an accumulator car from galloping, enabling the accumulator car to be controlled easily and facilitating driving safety.

The invention relates to the technical field of energy recovery, and discloses a mechanical granular material flow energy recovery device which comprises a hopper mechanism, a baffle protection mechanism, a potential energy capturing and converting mechanism, a speed increasing mechanism, a speed regulating protection mechanism, a gear box and a control mechanism. Energy is more effectively captured and converted through the potential energy capturing and converting mechanism comprising the skip bucket and the chain wheel and chain, the energy conversion efficiency is improved through multi-stage speed increasing of the speed increasing mechanism, and the speed adjusting protection mechanism for direct speed adjusting and the baffle protection mechanism for indirect speed adjusting are arranged to adjust the speed detected by the speed increasing mechanism in real time. Therefore, dual protection is provided for the system, the safety performance and the operation stability of the device are greatly improved, and stable operation of the system is always ensured while efficient energy conversion is ensured.

The invention provides a safety protection system of a downward belt conveyor, comprising a speed switch, a safety relay and a DC power, wherein the monitoring device of the speed switch detects the belt speed of the conveyor; when the belt speed is greater than the preset speed threshold value, the normally-closed contact of the speed switch is controlled to be opened, and then the signal input loop composed of the normally-close contacts of the DC power and speed switch and the coils of the relay is disconnected; the coil of the relay is in power failure; the normally-opened contact of the relay is disconnected; the normally-opened contact of the safety relay is disconnected, so the auxiliary contact loop of the brake pump motor is disconnected; the brake pump motor stops working; the conversion valve loop is disconnected; the reversing valve is reversed to one-circuit oil circuit of an overflow valve and a speed regulating valve, and then band-type brake action is realized, and the belt stops moving. After the downward belt conveyor is in power failure, the speed switch detects great belt speed, and the hydraulic brake system sends the signal to realize band-type brake and avoid flying phenomenon.

The invention discloses an anti-coupling structure and a using method of a long-distance conveyor belt transmission line. A conveyor belt is installed on the lower side, several sets of retraction leg columns are installed at the middle positions of the lower end surfaces of the first side slats and the second side slats, and the middle positions of the two ends of the retraction leg columns are provided with In the inner groove, the telescopic column leg is inserted into the middle position of the upper surface of the retractable leg column; the present invention can utilize the tight bite between the teeth to ensure the accuracy and stability of the horizontal inclination adjustment, and avoid the occurrence of The inclination of the movable transmission mechanism is deflected to ensure the normal use of the mechanism. The rubber strip is used to increase the friction between the linkage transmission structure and the auxiliary wheel to form a double anti-skid mechanism, which avoids the slipping phenomenon between the transmission belt and the linkage transmission structure and ensures linkage. The conveying structure conveys the material smoothly.

The invention provides a driving device with a safety device. The driving device comprises a motor, a self-circulating pump, the safety device and a hydraulic system. The driving device cannot happenthe galloping phenomenon; and when a fault occurs in a speed regulating portion of the driving device and the maximum operating speed of the driving device cannot be controlled, the safety device in the driving device can automatically control the maximum operating speed of the driving device to not exceed a set value, so that the galloping phenomenon is avoided.

The invention discloses a motor galloping protection system. The motor galloping protection system comprises a controller and a data processing circuit, wherein the data processing circuit controls the controller to be connected with a motor after receiving a starting signal for representing the normal work of the controller, so a motor is allowed to move according to the operation of the controller. By applying the above technical scheme, the controller can control the motor only when the starting signal is received, and the controller and the motor are in a disconnected state when the starting signal is not received, so the phenomenon of galloping of the motor under the conditions that the controller is abnormal and the like can be effectively prevented, and the safety of controlled equipment and personnel is further protected. In addition, the invention further discloses a motor galloping protection method which corresponds to the motor galloping protection system and has the same effect as the motor galloping protection system.

The invention provides a diesel engine capable of preventing galloping. The diesel engine capable of preventing galloping comprises a damping device spindle, a diesel engine body, a diesel engine power output shaft, a diesel engine power tail shaft, a gear change mechanism, a rotating speed detector and a speed reducer. The diesel engine power output shaft is arranged at the right end of the diesel engine body. The diesel engine power tail shaft is arranged at the left end of the diesel engine body. A left end shaft of the gear change mechanism is connected with the damping device spindle. A right end shaft of the gear change mechanism is connected with the diesel engine power tail shaft. The diesel engine body drives the diesel engine power output shaft, the diesel engine power tail shaft, the gear change mechanism and the damping device spindle to rotate. The gear change mechanism comprises a shell, two stators, a rotor and exciting coils. The diesel engine capable of preventing galloping is simple in structure; the rotor and the damping device spindle generate damping simultaneously through electromagnetic vortexes generated by the rotor and the stators, so that the diesel engine body is prevented from continuing speeding up, and the diesel engine is prevented from galloping.