43results about How to "Reduce the probability of slippage" patented technology

An electric motor is coupled to driving wheels 2, 2. When a slippage of the driving wheels 2, 2 is detected, the electric motor 5 produces a regenerative torque to suppress the slippage of the driving wheels 2, 2. The regenerative torque is controlled in a variable manner according to an index parameter that indicates a road surface condition. Thus, when the slippage of the driving wheels occurs, the slippage of the driving wheels is suppressed according to the road surface condition by a regenerative operation of the electric motor coupled to the driving wheels.

A hybrid vehicle includes an engine 2 , a motor generator 4 , a torque converter 6 with a lock-up clutch 5 and a ratio change mechanism 7 . The control system of the hybrid vehicle includes a rotational sensor 22 that detects the slip ratio of the torque converter and a hydraulic control valve 12 that controls engagement of the lockup clutch. When the vehicle moves as the accelerator pedal is released from the step-down state, driving force from the wheels is transmitted to the motor generator 4 to recover energy. The lockup clutch engagement is only controlled if the slip ratio of the torque converter is equal to or less than the first threshold. However, if the slip ratio is between the first threshold and the second threshold, the motor-generator is additionally cooperatively controlled.

The invention discloses an electronic limited-slip differential and a control method thereof. A detection mechanism is used for collecting rotation speed information, accelerator pedal opening information, steering wheel corner information, lateral acceleration information and yaw velocity information and sending all the information to an electronic control unit; a work mode selection unit is used for selecting different work modes of the electronic limited-slip differential by a driver; and an electronic control unit is used for controlling an electromagnetic clutch, an auxiliary motor and a brake of an execution mechanism to work according to the received information and limiting the slip rates of driving wheels, thereby realizing electronic limited-slip differential velocity of the driving wheels on two sides. When the slip rate of the driving wheel on one side exceeds a set value, the auxiliary motor connected with a half-shaft of the drive axle works as a generator to apply a resistance moment to the half-shaft, so that the slip rate of the wheel is reduced, and a driving moment of the generator effectively acts on the wheel on the other side; and the brake is matched with the auxiliary motor to work in necessity, so as to apply a certain bake force to the wheels.

The invention belongs to the technical field of agricultural machinery, and relates to a pneumatic type precise corn no-tillage planter. The pneumatic type precise corn no-tillage planter comprises a fan (1), a fan rack (2), a fertilizer box (3), a three-point hanging mechanism (4), an active anti-blocking mechanism (7), a general stander (8), a parallel four-connection-rod seeding mechanism (9), an air pressure distribution pipe (5) and a depth control mechanism (6), wherein the four-connection-rod seeding mechanism (9) further comprises a tension spring adjustment ring (29), a stop piece (37) and a lower parallel four-connection-rod limiting mechanism (38); and the depth control mechanism (6) comprises a depth control mechanism mounting plate (46), a depth control mechanism rotating shaft (47), a spring fixing pin (48), an adjustment spring (49), a depth control mechanism adjustment handle (50), a limiting plate (51), a depth control wheel (52), a first depth control mechanism bevel gear transmission box (17) and a second depth control mechanism bevel gear transmission box (56). The planter integrates the active anti-blocking mechanism, a pneumatic type planter and seeding profiling.

The invention belongs to the technical field of rare earth mine exploitation auxiliary equipment, and in particular, relates to a rare earth mine in-situ mine dipping auxiliary leakage device and an application method thereof. The device comprises a liquid inlet hopper, and a liquid inlet pipe connected with the liquid inlet hopper, wherein the diameter of the liquid inlet pipe is 15-35 mm; the length of the liquid inlet pipe is 1350-1400 mm; small holes are formed in the liquid inlet pipe; the number of the small holes is 3-15; and the diameters of the small holes are 5 mm. The rare earth mine in-situ mine dipping auxiliary leakage device and the application method thereof, provided by the invention, are not limited by the production scale, simple and applicable in structure, easy to operate, low in cost, environment-friendly in production and free of pollution, guarantee no collapse of a liquid injection shallow well, and reduce the slippage probability of a humus layer, a clay layer and a weathering mine layer on the earth surface.

The embodiment of the invention provides an anti-lock control method and system of a vehicle and an electric vehicle, and belongs to the technical field of vehicle automatic control. The method specifically comprises the steps of collecting state information of a vehicle; determining the current slip rate of the electric driving wheel of the vehicle according to the state information and a slip rate model; under the condition that the current slip rate is larger than or equal to a preset slip rate threshold value, determining the target wheel speed of the motor driving wheel according to the state information and a slip rate model; and regulating the wheel speed of the motor driving wheel to the target wheel speed, so that the slip rate of the motor driving wheel is reduced to be smaller than a preset slip rate threshold value. According to the scheme, the wheel speed of the motor driving wheel is adjusted to the target wheel speed, the slip rate of the motor driving wheel can be reduced to be smaller than the preset slip rate threshold value; therefore, it is ensured that the slip rate in the braking process is within the safety range, and the braking anti-lock safety is provided.

A control device may be configured for responding to failure for ensuring the stability of a vehicle by switching from a two-wheel-drive mode to a four-wheel-drive mode when detecting failure of the brake system in a two-wheel-drive mode.

The invention provides a limiting device for a latex mattress. The limiting device comprises a hook-and-loop fastener rough surface belt, a cloth strip, a hook-and-loop fastener hook surface belt, a plastic plate and a sponge double-sided adhesive tape, the hook-and-loop fastener rough surface belt is fixed on the front end surface of a latex mattress body; the cloth strip is fixed to the upper end of the hook-and-loop fastener rough surface belt. The hook-and-loop fastener hook face belt is installed on the front end face of the hook-and-loop fastener rough surface belt, and the front end face of the hook-and-loop fastener hook face belt is fixed to the upper side of the rear end face of the plastic plate. The plastic plate is arranged in front of the latex mattress body, the front end face of the sponge double-sided adhesive tape is fixed to the lower side of the rear end face of the plastic plate, the rear end face of the sponge double-sided adhesive tape is pasted to the upper sideof the front end face of a bed board, the probability of sliding deviation of the latex mattress body is reduced through the design, and the limiting device is good in limiting effect, easy to operate, convenient to separate and attractive.

The invention belongs to the technical field of agricultural equipment, and specifically relates to a steering wheel type no-tillage and precise sterilizing seeder for maize. The steering wheel type no-tillage and precise sterilizing seeder for maize comprises a rack (1), a suspension mechanism (2), a transmission mechanism (3), a straw crushing returning and clearing device (5), a fertilizer applying device, a steering wheel type spoon plate dibbler (6) and a press wheel (7); the suspension mechanism (2) is arranged at the front end of the rack (1); the transmission mechanism (3) and the fertilizer applying device are arranged in the middle part of the rack (1). The steering wheel type no-tillage and precise sterilizing seeder for maize is characterized in that the straw crushing returning and clearing device (5) is arranged below the front end of the rack (1); the steering wheel type spoon plate dibbler (6) is arranged at the lower end of the middle part of the rack (1); the press wheel (7) which is connected through a vibrating arm (10) is arranged at the tail end of the rack (1). According to the steering wheel type no-tillage and precise sterilizing seeder for maize, the straws are crushed, the surface soil is broken, thus the tillage condition is obviously improved, the sliding rate of the dibbler is obviously reduced, and as a result, the seeding uniformity and accuracy can be ensured, and the seeding quality can be improved.

The invention discloses a distributed driving electronic differential self-adaptive control system. The system comprises a power supply device, an accelerator pedal, a steering wheel and corner sensor, a vehicle speed estimator, a signal preprocessor, an electronic differential controller, a motor controller, a wheel speed sensor, an accelerator pedal sensor, a brake pedal sensor, a driving motor,an input signal processing module, a whole vehicle driving control module and a driving torque output module; wherein the input signal processing module is connected with the whole vehicle driving control module, and the whole vehicle driving control module is connected with the driving torque output module. The whole vehicle coordination control model and strategy of a double-layer structure with the upper layer as the driving force distribution layer and the lower layer as the slip rate control layer are adopted. According to different driving conditions of an automobile, wheel equal powerdistribution control, a yaw moment control strategy based on fuzzy control and a self-adaptive electronic differential control strategy based on similar wheel slip rates are used for achieving multi-mode coordination control.

The invention discloses a peanut field breeding precision seeder which comprises a rack, a driving land wheel device and a seeding device, the seeding device comprises a seed pre-filling device, an air suction seed discharging device, an air suction seed cleaning device, a seeding adjusting device and the like, and seeds are controlled by the seed pre-filling device to enter the air suction seed discharging device according to requirements; residual seeds are collected by combining the air-suction seed cleaning device, and the seeding adjusting device can automatically adjust the seeding speed and the distance between a scraper and a seeding port according to the peanut seeding speed, so that the damage rate of peanut seeds is reduced, and the optimal seed filling performance is realized; the overall shape of the driving land wheel device is V-shaped, and the driving land wheel device has a relatively low slip rate, so that the seeding stability of the seeding device of the peanut seeding machine and the accuracy of seeding hole spacing are ensured. According to the scheme, the seed filling efficiency in the peanut sowing process is effectively improved, the damage rate of peanut seeds is reduced, the sowing depth consistency in the sowing process is kept, and high practical application and popularization value is achieved.

The invention relates to a shaft expansion forming device which comprises a machine body, wherein a clamping assembly is arranged on the machine body and used for clamping a pipe body, the clamping assembly clamps the end, close to the length direction, of the pipe body, a shaft expansion assembly is arranged at the end, clamping the clamping assembly, of the pipe body and comprises a mounting table, and the mounting table and one end of the pipe body are mounted on the machine body; a shaft expansion air cylinder is mounted on the side, away from the pipe body, of the mounting table, a piston rod of the shaft expansion air cylinder stretches out and draws back in the direction close to or away from the pipe body, a shaft expansion head is mounted on the piston rod of the shaft expansion air cylinder; the clamping assembly comprises a limiting sleeve which is arranged on the outer side of the tube body in a sleeving mode, and a guide sleeve is arranged on the side, facing the tube body, of the mounting table in a sleeving mode. The shaft expansion forming device has the advantages that the tube body can be connected to other parts without welding, so that smoke dust cannot be generated, and pollution to the environment during production of a long tube non-standard part is reduced.

The invention discloses a connecting part of an assembly type steel-concrete combination structure used for a steel-concrete combined bridge, and relates to the field of bridge construction connectionparts. The connecting part comprises a concrete plate, connecting grooves are formed in the top end of the concrete plate, longitudinal reinforcing ribs are arranged in the connecting grooves, transverse reinforcing ribs are arranged at the positions, on one sides of the longitudinal reinforcing ribs, in the connecting grooves, one end of the concrete plate is connected with a groove, a first connecting steel part is arranged in the groove, and first bolts are arranged in the first connecting steel part. Through the concrete plate, a mounting steel part, a fixed steel part, second thread holes, an anti-sliding pad, through holes, second bolts, a clamping groove and a connecting ring, the concrete plate is connected with the mounting steel part in a manner that the second bolts penetrate through the anti-sliding pad and the fixed steel part, the anti-sliding pad is added between the connected steel parts, and is located in the clamping groove, so that the slippage probability between the connecting parts is reduced, and dismounting and mounting are convenient.