25results about How to "Reduce output torque" patented technology

The invention discloses a distributed K-H-V type involute joint module with a small tooth difference. The distributed K-H-V type involute joint module is applied to a joint on a snakelike mechanical arm. The joint module is composed of three sets of rotary driving units, a rack, an inner gear and an outer gear, in the transmission process, the eccentric shaft rotates to drive the inner gear to output at the rotating speed, and then the outer gear translates. The three groups of rotary driving units are respectively mounted in through holes formed in the inner gear and the outer gear at equal intervals; the rotary driving unit is matched with a bearing, an outer gear and an inner gear through a small motor, so that the space utilization rate of the joint module is increased; and in addition, by reducing transmission links, the power loss of the joint module is reduced, so that the joint module has the characteristics of small size and high output efficiency on the basis of having the characteristics of high rigidity and large transmission ratio of involute small tooth difference planetary gear transmission.

The invention discloses a wheeled transfer robot. The wheeled transfer robot comprises a chassis assembly; the inflexion knee joint assembly is movably arranged on the chassis assembly; the head recognition assembly is rotationally arranged above the knee joint inflection assembly; the two arm assemblies are movably arranged on the two opposite sides of the inflexion knee joint assembly respectively; the chassis assembly comprises a chassis main body; the four steering wheel mechanisms are symmetrically arranged at four corners of the chassis main body in a penetrating manner; the battery mechanism is fixedly arranged at the middle rear position of the chassis main body; the navigation radar mechanism is arranged above the chassis main body; the knee joint inflection assembly comprises a fixing base, a first telescopic arm mechanism, a joint driving motor, a second telescopic arm mechanism and an elastic supporting mechanism. Through cooperation of the chassis assembly with the high integration degree and the inflexion knee joint assembly with the multiple movable joints, the problems that an existing wheel type transfer robot chassis is insufficient in stability and small in operation range are effectively solved.

The embodiment of the invention provides a torque adjusting method, device and equipment of a vehicle and a computer readable storage medium. The method comprises the following steps: acquiring a bump identification signal; comparing the bumping identification signal with a preset bumping signal to judge whether the current vehicle driving road surface is a bumping road surface; if the road surface is the bumpy road surface, the current vehicle speed and the current pre-output torque are obtained so as to determine the target torque, and the target torque is smaller than the pre-output torque; and outputting the target torque. In this way, in the running process of the vehicle, if the road surface is bumpy, the output torque can be properly reduced on the basis of the current pre-output torque expected by a user, in this way, the impact torque borne by a transmission system can be naturally reduced, and therefore instant cracking or fatigue failure of parts can be avoided as much as possible.

The invention discloses a handheld electric tool synchronous motor control method, device, controller and system, and the method comprises the steps that the controller obtains the current operation parameters of a synchronous motor, and the operation parameters comprise a bus voltage value, a bus current value, a duty ratio and a commutation interval; the current input power is calculated according to the bus voltage value, the bus current value and the duty ratio, and the current rotating speed is calculated according to the commutation interval and the number of pole pairs of the synchronous motor; searching the current input power and the output torque corresponding to the rotating speed based on a set lookup table; based on the set output torque threshold value and the current output torque, the target operation state of the synchronous motor at the next moment is decided. According to the application, automatic shutdown can be performed in time when the set output torque value is reached, and the output torque value is smaller than the torque value when the output head is clamped and larger than the torque value when an operator normally uses a tool, so that the use requirement of the operator is met, and the operator is protected from being injured by the tool.

The utility model provides a low-torque pan-tilt camera device which comprises a support, a spherical groove corresponding to a spherical assembly is arranged on the support, the spherical assembly is located on the inner side of the spherical groove, a plurality of tooth grooves are formed in the outer side wall of the spherical assembly, and a plurality of clamping grooves are formed between the tooth grooves and the outer side wall of the spherical assembly. An arc-shaped rack for driving the spherical assembly to rotate is formed; a gear is fixedly arranged at the power output end of the motor, and the gear is meshed with the arc-shaped rack; the camera lens is located on the inner side of the spherical assembly. The utility model has the beneficial effects that the transmission ratio is small, that is, the output rotating speed is high, the torque is small, the shaking of the pan-tilt camera lens in the rotating process is avoided, and the transmission mechanism is suitable for high-speed and small-torque transmission application scenes.

The invention relates to a robot control method and device and a robot. The method comprises the steps that in a man-machine interaction scene, a first foot end of a first limb and a second foot end of a second limb of the robot are controlled to reach corresponding supporting positions respectively; a first limb and a second limb of the robot are controlled to execute a half-lying action until a second joint of the second limb and a second foot end fall to the ground, a first joint of the first limb falls to the ground, and a first structural part of the first limb is perpendicular to the ground at a side view angle; wherein the landing point of the second foot end is the supporting position corresponding to the second foot end, and the landing point of the first joint is under a third joint rotating shaft of the first limb when the robot is in a half-lying state; and the output torque of the joint motor of each joint of the robot is reduced to control the robot to keep a semi-lying state. The method can be applied to a long-time man-machine interaction scene.

The present invention addresses the problem of suppressing an excessive decrease in the output torque of an engine during execution of an inter-cylinder correction process. A drive control device is applied to a vehicle provided with a spark ignition engine having a plurality of cylinders. A first processing circuit of the drive control device executes inter-cylinder correction processing for correcting fluctuations in the magnitude of engine torque at the ignition timing of a plurality of cylinders and adjusting the amount of fuel supplied to the cylinders or the ignition timing for each of the plurality of cylinders. Lower limit protection is set for the amount of fuel supplied to the cylinder or the correction amount of ignition timing when the inter-cylinder correction process is executed.

This utility model relates to a lifting device with dynamic gravity compensation, including a support frame, a transmission lifting device, a sliding frame sliding on the support frame, a fixed pulley group set on the top of the support frame, a tension spring for relieving pressure on the lifting device, a movable pulley group set on the tension spring, and a steel rope for pulling the sliding frame. The lifting device is set inside the support frame; the working end of the lifting device is connected to the sliding frame; a connecting piece is set on the side wall of the support frame; one end of the tension spring is set on the connecting piece; the other end of the tension spring is set on the movable pulley group; the fixed pulley group includes several sets of first pulley bodies; the movable pulley group includes several sets of second pulley bodies; the steel rope is wound around the first pulley bodies and the second pulley bodies in sequence. This invention solves the problem that the transmission structure of traditional lifting devices is relatively simple, often using a single steel wire rope or chain to directly connect the motor and the lifting platform, which cannot effectively amplify the stroke of the steel wire rope.

The invention discloses a reduction gearbox connecting structure and a floor washing robot. The reduction gearbox connecting structure comprises a transmission wheel, a planet wheel set and a connecting assembly, the planet wheel set comprises a planet carrier, an inner gear ring, a center wheel and a plurality of planet wheels, the driving motor is provided with an output shaft, the center wheel is installed on the output shaft, and the planet wheels are connected with the planet carrier and meshed with the periphery of the center wheel at intervals. The inner gear ring is meshed with the planet wheels, and the ground brush assembly is in transmission connection with the transmission wheel. The connecting assembly comprises a first connecting component and a second connecting component, and the first connecting component is connected with the transmission wheel and movably connected with the planet carrier, so that the planet carrier is connected with or separated from the transmission wheel; the second connecting component is connected with the transmission wheel and movably connected with the center wheel so that the center wheel can be connected with or separated from the transmission wheel. According to the technical scheme, the reduction gearbox connecting structure can improve the cleaning efficiency and the cleaning effect of the floor washing robot.

The present invention relates to a control device for a hybrid vehicle. When the all-wheel drive mode is selected, it is not easy to cause discomfort to the driver. When the all-wheel drive mode is selected in the main drive wheel drive mode when the engine is in a stopped state, the stopped state of the engine is maintained before the switch from the main drive wheel drive mode to the all-wheel drive mode is completed, and the engine is started after the driver performs a predetermined operation for driving the hybrid vehicle, thereby avoiding the switching to the all-wheel drive mode and the engine starting at the same time, preventing the occurrence of shock, and further, starting the engine based on the driver's operation associated with the engine start. As a result, when the all-wheel drive mode is selected, it is not easy to cause discomfort to the driver.

The present invention relates to a cooling control device for an electric vehicle, which prevents or suppresses air suction during rapid acceleration and deceleration of an oil pump for cooling a motor for driving. The first oil pump supplies oil to the first motor for the front wheel. A second oil pump for supplying oil to the second motor for the rear wheel; and a controller (31) that controls the first oil pump and the second oil pump, the controller (31) being provided with: a detection unit (31a) that detects at least one of acceleration and deceleration when traveling by operating the first motor and the second motor; a sudden acceleration / deceleration determination unit (31b) that determines that either the acceleration or deceleration detected by the detection unit (31a) exceeds a predetermined threshold value; and a reduction control unit (31c) that, when it is determined that either the acceleration or the deceleration exceeds a predetermined threshold value, performs control so as to reduce the amount of oil supplied by an oil pump that supplies oil to one of the first motor and the second motor having a smaller load.

A motor (1) comprises: a rotor (20) having a yoke (30), a first magnet (41), and a second magnet (42) facing the first magnet (41); and a stator (10). The yoke (30) comprises a hole (38) and a frame (39) surrounding the hole (38). The first magnet (41) is disposed in the hole (38) of the yoke (30), and the second magnet (42) comprises a first surface (4a) facing the frame (38) of the yoke (30) in the circumferential direction and a second surface (4b) facing the stator (10) in the radial direction.

The utility model discloses a two-gear power system for a hybrid vehicle model. The two-gear power system comprises an engine, a driving motor, an input shaft, a motor shaft, an intermediate shaft, a first gear, a second gear, an input gear, an output gear, a sun gear, a planet gear, a fixed gear ring, a planet carrier, a joint component and a gear shifting component, the input shaft, the motor shaft and the intermediate shaft are respectively and rotatably arranged, the engine is connected with the input shaft, the driving motor is connected with the motor shaft, the first gear is hollowly sleeved on the input shaft, the second gear is connected to the motor shaft, the input gear is connected to the intermediate shaft, and the second gear is connected to the motor shaft. The first gear and the second gear are both meshed with the input gear. The gear shifting device has two gears and can switch the gears according to the vehicle speed, high-speed and low-speed driving working conditions of the vehicle can be considered, the driving motor and the engine can be kept working in a high-efficiency interval, and the gear shifting device is favorable for prolonging the endurance of pure electricity and improving the fuel economy.

The invention relates to a motion domain cooperative stability control method and device after tire burst of a vehicle and a medium, and the method comprises the steps: monitoring the air pressure data of each tire of the vehicle in real time, and generating a tire burst signal when tire burst is detected; the vehicle motion control system formulates a cooperative control strategy according to the tire burst signal and vehicle state data collected by an inertial measurement unit; according to the cooperative control strategy, control instructions are synchronously sent to a braking system, a power system, a rear wheel steering system and a semi-active suspension system, and the rear wheel steering system controls rear wheels to deflect in the specific direction so as to generate corrected yawing moment in the direction opposite to that of yawing moment caused by tire burst; the braking system applies braking force to the obliquely opposite side wheel of the tire burst wheel so as to assist in generating reverse yawing moment, the power system reduces output torque, and the semi-active suspension system adjusts rigidity and damping parameters of the tire burst side suspension and the diagonal side suspension. Multi-system coordinated response can be achieved at the moment of tire burst, and the running track is kept stable.

This invention relates to the field of vehicle steering technology and discloses a control method for preventing lateral sway in vehicles, comprising the following steps: collecting yaw rate oscillation frequency data of the vehicle; setting a yaw rate oscillation frequency threshold data, and performing shudder trend judgment processing based on the yaw rate oscillation frequency data and the yaw rate oscillation frequency threshold data to generate vehicle shudder early stage judgment data; collecting yaw rate oscillation frequency data in real time through an inertial measurement unit gyroscope sensor, and setting a calibrable yaw rate oscillation frequency threshold, comparing the measured data with the threshold, which can actively identify the trend of the vehicle entering the early stage of shudder, avoiding the phenomenon that shudder deteriorates into fatal sway due to the inability of passive suspension to monitor the oscillation frequency, and ensuring the safety of the vehicle at high speeds.

The present application provides a vehicle control method, related equipment and vehicle, the method comprising: in response to determining that a gear switching instruction has been received, reducing the output torque and value of the engine and the front axle motor to a preset value. The gear of the vehicle is switched to the target gear indicated by the gear switching instruction through the transmission, and the clutch is controlled to remain in a closed state during the gear switching process until the gear switching is completed. During the gear shifting process, the state of the clutch remains unchanged and is continuously maintained in a closed state, eliminating the process of the clutch opening first and then closing, reducing the time consumed by the clutch state change, and thereby reducing the gear shifting time. In response to the completion of the gear switching, the output torque of the engine and the front axle motor are increased respectively, and the vehicle returns to a normal driving state. In this process, since the gear shifting time is reduced, the probability of unexpected abnormal problems occurring in the vehicle is greatly reduced, thereby improving the user's driving experience.

The invention belongs to the field of transporters, and relates to a super-tonnage handle transporter. Auxiliary power can be provided at the starting moment of the motor of the lifting mechanism, and the torque when the motor of the lifting mechanism is started is reduced. According to the technical scheme, supporting legs, a main beam and a lifting mechanism are included. A plurality of supporting legs are installed on the lower portion of the main beam. And the lifting mechanism is arranged on the main beam. The lifting mechanism comprises a lifting trolley, a lifting motor, an auxiliary power piece and a roller. The lifting trolley is movably arranged on the main beam and moves in a reciprocating mode in the extending direction of the main beam. And the lifting motor is fixed on the lifting trolley. One end of the auxiliary power piece is fixedly connected with an output shaft of the lifting motor. The roller is arranged on the lifting trolley and rotates around the center line of the roller, and the auxiliary power piece is fixedly connected with a center shaft of the roller.

The invention provides a valve seat for a ball valve and the ball valve, the valve seat is provided with an inner hole, the inner hole comprises a flow adjusting hole and a matching hole, a curved surface part is formed between the flow adjusting hole and the matching hole, the inner circumferential wall of the matching hole is provided with an annular protruding part locally protruding inwards, and a sealing ring is formed on the inner circumferential wall of the annular protruding part; the center of the spherical surface where the sealing ring is located and the center of the spherical surface where the curved surface portion is located are staggered in the axial direction. The flow adjusting hole is integrated in the valve seat, compared with the mode that a flow adjusting window is arranged on a valve element, the valve seat is easier to machine, when the valve seat is applied to the ball valve, an assembly flow disc does not need to be additionally arranged, cost is reduced, adjusting precision is high, and flow consistency is good; the spherical center of the spherical surface where the sealing ring is located and the spherical center of the spherical surface where the curved surface portion is located are staggered in the axial direction, when the valve element rotates to any position, the valve seat is always attached to the spherical surface of the valve element only through the sealing ring, the contact area of the valve seat and the valve element is smaller and constant, and torque needed when the valve element rotates is smaller and constant. And the rotation smoothness of the valve core is improved.

The application relates to the electric drive technology field of new energy vehicles, in particular to a differential protection method and device, an electric vehicle and a storage medium, wherein the method comprises the following steps: acquiring the output torque of a driving motor in the electric vehicle; if the output torque is in a preset torque interval, activating the differential protection function of the differential and / or the gravity control system of the electric vehicle, wherein the execution priorities of the gravity control system and the differential protection function are different; reducing the output torque of the driving motor by using the differential protection function and / or the gravity control system, so as to reduce the speed difference between the half shafts in the differential, until the speed difference is less than a first preset value. Thus, the problem that the differential is prone to failure and the vehicle is prone to failure due to long-time wear and tear of the differential exceeding the design boundary in the prior art is solved, the service life of the electric vehicle is reduced, and the user experience is poor.

This invention provides a two-dimensional electro-hydraulic servo valve based on a wet-dry separation transmission mechanism, comprising a valve body connected to a motor via a mechanical transmission mechanism; the valve body includes a valve core, a valve sleeve, and a valve body; the mechanical transmission mechanism includes a housing disposed between the valve body and the motor, within which are a wet operating chamber and a dry operating chamber, the wet operating chamber being connected to the internal oil passage of the valve body; the dry operating chamber is located on one side of the wet operating chamber, and the motor rotor extends into the dry operating chamber; the mechanical transmission mechanism also includes a transmission assembly, comprising a first-stage torque amplification mechanism and a second-stage torque amplification mechanism connected together. This invention addresses the problems of high-pressure dynamic seal friction loss and short lifespan in existing two-dimensional electro-hydraulic servo valve structures by incorporating a wet operating chamber; simultaneously, the dry operating chamber ensures that the hydraulic oil does not directly contact the motor; the transmission assembly amplifies the motor's output torque, overcoming various resistances encountered by the valve body during operation.

The invention provides an automatic two-gear gearbox for new energy engineering machinery and a control method of the automatic two-gear gearbox. The automatic two-gear gearbox for the new energy engineering machinery comprises an input end, a speed reducing mechanism, a torque reducing mechanism and an output end, the input end is provided with a one-way bearing and a centrifugal clutch, the one-way bearing and the centrifugal clutch are in transmission connection with the speed reducing mechanism and the torque reducing mechanism respectively, and the speed reducing mechanism and the torque reducing mechanism are in transmission connection with the output end. And the two motors are in transmission connection with the output end. According to the control method of the automatic two-gear gearbox for the new energy engineering machinery, the rotating speed of the input end is controlled to select the transmission direction, and gear shifting is achieved. According to the automatic two-gear gearbox for the new energy engineering machinery and the control method of the automatic two-gear gearbox, the defects that the structure and the control method are complex, and pause is prone to occurring are overcome.

The application provides a wind turbine load control method, device, computer readable medium and equipment, relates to the wind power generation technical field, and the method comprises the following steps: acquiring the environment wind speed and wind direction of the current time in real time; in the case of determining that the wind speed and wind direction meet the preset wind condition, the wind speed and wind direction are matched with the preset wind speed threshold value and the preset wind direction threshold value respectively; if the wind speed is greater than the wind speed threshold value and the wind direction is greater than the wind direction threshold value, the output torque of the wind turbine is controlled to be the target torque, and the target torque is lower than the preset output torque of the wind turbine. The application can acquire the environment wind speed and wind direction of the wind turbine in real time, and when it is determined that the current wind speed and wind direction meet the preset wind condition, and the wind speed and wind direction are greater than the preset wind speed threshold value and the wind direction threshold value respectively, the output torque of the wind turbine is controlled to be reduced, so that the load of the wind turbine is reduced, the loss of the wind turbine components under extreme wind conditions is reduced, and the service life of the wind turbine components is prolonged.

The invention discloses a compact type high-precision rotary actuator which comprises a shell and further comprises a motor arranged in the shell, and the output end of the motor is provided with a worm; the gear transmission system is arranged in the shell, and the power input end of the gear transmission system is in driving connection with the worm; the potentiometer is arranged in the shell, a carbon brush in the potentiometer is in driving connection with the power output end of the gear transmission system, the voltage value output end of the potentiometer is connected with an external controller, and the position of the compact type high-precision rotary actuator is recognized and controlled. Compared with the prior art, the invention has the following characteristics: 1) the output torque is small, the structure is compact, the installation space is small, and the adaptability of the product is improved; (2) the output angle can be adjusted according to practical working conditions, and the mechanical adjustment angle is 360 degrees; and 3) a position identification element is integrated in the actuator and is separated from a controller end, and compared with a position reading module and a control module which exist independently, the modularization of the actuator with the position identification function is realized, and the application range is wide.

The present invention relates to a car lift which is convenient for leveling positioning, car plate locking and car plate picking. The car lift comprises a lifting frame, on which a leveling positioning device, a car plate locking device, a driving linkage device, a rope pulley device for lifting and lowering, a guiding device for vertical guiding and a picking device for picking up a car-carrying plate are provided; the leveling positioning device comprises leveling positioning telescopic plates symmetrically arranged on both sides of the lifting frame along the left-right direction of the lifting frame and a driving linkage device for controlling the leveling positioning telescopic plates on both sides to move toward / away from each other synchronously; the car plate locking device comprises car plate locking telescopic plates arranged on both sides of the lifting frame and a driving linkage device for controlling the car plate locking telescopic plates on both sides to move toward / away from each other synchronously horizontally; the picking device comprises picking frames arranged along the left-right direction at both ends of the lifting frame, a picking sprocket group arranged on the picking frame and a picking chain arranged on the picking sprocket group.

The invention discloses a vehicle integrated intelligent control method and system, and belongs to the technical field of vehicle integrated control, and the method comprises the steps: obtaining a vehicle driving speed and a vehicle driving scene; judging whether a curve appears in front of the vehicle and the turning radius of the curve according to the vehicle driving scene; when the curve appears in front of the vehicle, the turning radius of the curve appearing in front is smaller than or equal to the set turning radius, and the running speed of the vehicle is larger than the first set speed, the distance between the vehicle and the curve is determined; controlling the vehicle to slow down and the engine to reduce the output torque according to the distance from the vehicle to the curve, so that the vehicle running speed is reduced to a second set speed and the engine output torque is reduced to the set output torque when the vehicle reaches the curve; and when the vehicle arrives at the curve, the vehicle is controlled to improve the suspension damping on the outer side of the curve and steer, and stable operation of the vehicle in various road conditions is achieved through vehicle integrated control.