17results about How to "Guaranteed normal driving" patented technology

The invention provides a gear shifting control method and system and a vehicle, the gear shifting control method is used for a vehicle driving system provided with a gear shifting actuator set to be a brushless direct current motor, and the gear shifting control method comprises the following steps that a current target gear is obtained according to gear shifting operation of a user, and a current shifting fork position is obtained; in response to the situation that it is judged that the position of the shifting fork is not changed after the preset gear shifting time, the gear shifting actuator is switched into a non-inductive control mode; whether a rotor of the gear shifting actuator can rotate normally or not is judged; and if not, it is judged that mechanical clamping stagnation happens to the driving system, and gear shifting is not conducted any more, and if yes, it is judged that electric control clamping stagnation happens to the driving system, and the driving system is switched to the target gear from the current actual gear through a gear shifting actuator in the non-inductive control mode.

This utility model relates to the technical field of mechanical parts processing equipment, and discloses a spraying structure for mechanical parts processing, including a transmission chamber. Several rotating shafts are rotatably connected to the transmission chamber. A hanger is fixedly mounted at the bottom end of each rotating shaft, and a gear is fixedly mounted at the top of each rotating shaft. The gear meshes with a rack. A guide assembly for guiding the rack is provided inside the transmission chamber. A bracket is fixedly mounted at the bottom end of the transmission chamber, and a cylinder for driving the rack is mounted on the top of the back of the bracket. By using a hanger at the bottom end of the rotating shaft, mechanical parts can be suspended. By connecting a spray pipe to a spraying pump, the surface of the mechanical parts can be sprayed. The rack is driven by the cylinder, and because the gear meshes with the rack, the rack can drive several rotating shafts to rotate synchronously. The rotating shafts can then drive the hanger to rotate, thereby adjusting the angle of the mechanical parts.

The invention belongs to the technical field of ships, and particularly relates to a rudder angle indicating tool. The rudder angle indicating tool comprises a dial plate which is fixed on a ship body and is provided with angle scales; the indicating structure comprises a connecting assembly and a pointer, the connecting assembly is detachably connected with the rudder shaft, and the pointer is connected with the connecting assembly; wherein in the axial direction of the rudder shaft, at least part of the projection of the pointer falls on the dial plate and is used for indicating angle scales. The rudder angle indicating tool can guarantee the indicating precision.

The invention discloses an automatic navigation control system and method of a hydraulic drive crawler, and relates to the technical field of engineering vehicle control, the system comprises a navigation control subsystem used for confirming a starting point and an ending point to confirm a driving path; the man-machine interface logic control subsystem is used for receiving the driving path and setting initial information of the crawler according to the driving path; the crawler driving control subsystem is used for controlling the crawler to run along the running path according to the initial information; the controller is also used for acquiring real-time data and yaw information of the crawler, calculating a yaw distance, comparing the yaw distance with a yaw threshold value to obtain a comparison result, and generating a correction instruction according to the comparison result; and the tracked vehicle driving control subsystem corrects the yawing tracked vehicle based on the correction instruction, so that the tracked vehicle recovers to go straight. According to the method and the device, the crawler running in the preset path can be timely, accurately and automatically corrected.

The utility model relates to the technical field of railway transportation equipment and safety, and particularly discloses an external brake device of a track inspection tester, which comprises a supporting mechanism, the supporting mechanism comprises a supporting assembly, and a clamping assembly, a braking assembly and a driving assembly are installed on the supporting assembly. The supporting assembly and the clamping assembly are combined and fixed to a train track inspection vehicle, and the driving assembly is rotationally clamped and embedded in the supporting assembly and drives the brake assembly to abut against a train track. The torsion spring drives the connecting shaft rod to rotate, so that the brake pad is far away from a train track, and normal running of a train is guaranteed; when braking is needed, an operator only needs to rotate the handle, the first push block can be pushed to move through the second push block, then the brake pad abuts against a train track, and rapid and effective braking is achieved. In addition, a first spring in the brake assembly can drive a first push block to be away from a second fixing plate after braking, so that a brake pad leaves a rail in time, and excessive abrasion is avoided.

The invention relates to the technical field of agricultural machinery gearboxes, in particular to an agricultural machinery gearbox with a differential lock function and a method. The invention discloses an agricultural machinery gearbox with a differential lock function. A differential lock locking mechanism and a hand brake braking mechanism are arranged in a main body; the differential lock locking mechanism comprises a differential lock switch, an oil cylinder, a clutch claw and a return spring; the hand brake braking mechanism comprises a pull rod, a pressure plate and a driven plate; the invention further provides an agricultural machine speed change method with the differential lock function. The differential lock locking mechanism can lock the differential mechanism to enable tires on two sides to be rigidly connected and synchronously obtain power when tires on one side of an agricultural machine slip, so that a vehicle is prevented from slipping under bad road conditions such as muddy and snowfield, and stable running is guaranteed; the hand brake braking mechanism drives the pressure plate by operating the pull rod to control the contact or separation of the driven plate and the three shafts of the transmission mechanism, so that the power transmission is cut off or recovered, the vehicle is reliably parked, and the vehicle sliding is prevented.

The invention discloses a method for building piers in a middle isolation belt of existing lines of a busy expressway, and relates to a pier manufacturing process. Comprising the following steps: measuring the floor contour of piers; building a fence outside the floor contour; excavating an inclined pit outside an expressway; excavating a tunnel from the bottom of the inclined pit to the center position of the fence, upwards excavating a foundation pit in the tunnel located below the fence, excavating pile pits in the positions of the floor contours of the two piers at the bottom of the foundation pit, and erecting template brackets at the pile pits. Pouring the reinforcement cage outside the expressway by using a concrete pump truck, forming a concrete pile after the reinforcement cage is poured, maintaining, removing the mold, backfilling the foundation pit, backfilling the tunnel, and backfilling the tunnel. The tunnel capable of penetrating through the isolation belt needing to build the bridge pier is excavated outside the lane of the expressway, materials needing to build the bridge pier are transported along the tunnel, and the defects that when the bridge pier is built on the isolation belt, the normal driving lane of the expressway is blocked, and driving safety is endangered are overcome.

This utility model discloses a tunnel wall ring reinforcement forming device, relating to the field of tunnel ring reinforcement processing technology. The tunnel wall ring reinforcement forming device includes an integrated steel frame, which houses a primary forming mechanism, a straightening mechanism, a matrix laser sensor, and an encoder. The matrix laser sensor is located on the reinforcement inlet side of the primary forming mechanism. The primary forming mechanism includes a pair of driving wheels and driven wheels, with the driving wheel connected to the encoder and the driven wheel connected to a linear avoidance actuator. The straightening mechanism includes a pair of driving wheels and driven wheels, with the driven wheel connected to a linear avoidance actuator. The matrix laser sensor and the encoder are electrically connected to a control box, which is controlled by the linear avoidance actuators. This tunnel wall ring reinforcement forming device can avoid sleeve collisions, improve ring reinforcement forming accuracy, and ensure forming quality.

The application discloses a relay control circuit, a relay control method and an electric vehicle, and relates to the technical field of electric vehicles. The relay control circuit is used for controlling a relay, the relay is arranged on a high-voltage loop of a power battery pack, the relay control circuit comprises a plurality of controllers, the controllers are controllers in any management system of the vehicle, the controllers have power output ends, the power output ends are connected with each other to form a ring-shaped loop, an input end of a coil in the relay is connected with the ring-shaped loop, and an output end of the coil is grounded. According to the application, the plurality of controllers are used for jointly controlling the relay, even if the voltage output by part of the controllers cannot reach the driving requirement of the relay, the remaining controllers with normal output can ensure the normal driving of the relay, the contact of the relay can be effectively closed, the risk of arc drawing is reduced, the sticking of the relay is avoided, and the safety of the vehicle is ensured.

The application provides a control system and method of a vehicle, the vehicle and a storage medium. The system comprises a power system controller VCU and a brake system controller IBCU. The VCU is configured to send a total slip energy recovery torque to the IBCU when the vehicle is on a wet road and the current vehicle speed is greater than or equal to a vehicle speed threshold. The IBCU is configured to calculate the total slip energy recovery torque to obtain a total deceleration demand torque. The total deceleration demand torque is used to perform electric brake front and rear axle distribution and electro-hydraulic distribution to obtain front and rear axle recovery target torque. The front and rear axle recovery target torque is used to perform slip liquid supplementing to control the vehicle.

The utility model provides a dual-motor-based middle motor and an electric vehicle. The dual-motor-based middle motor comprises a first motor, a second motor, a first speed reduction assembly, a second speed reduction assembly and a planetary speed change assembly, the first speed reduction assembly comprises a first gear, a second gear, a third gear, an output gear and a motor clutch. The first gear is meshed with the output end of the first motor, the first gear is coaxially connected with the second gear, the second gear is meshed with the third gear, and the third gear is meshed with the output gear; the motor clutch is connected to the periphery of an output shaft of the planetary speed change assembly. Wherein the third gear is an idle gear, and the motor clutch can be engaged with / disengaged from the output gear. The torque can be increased, the size of the motor is obviously reduced, and the weight of the motor is reduced. And the third gear adopts an idle gear form, so that the outer diameter of the output gear can be reduced, and the size of the whole motor is further reduced.

This application relates to the field of vehicle control technology, and in particular to a vehicle adjustment method, apparatus, computer equipment, and storage medium. The method includes: acquiring an adjustment command for dynamically adjusting the appearance of a target vehicle; determining a vehicle adjustment strategy for the target vehicle based on the adjustment command; and performing vehicle adjustment operations on the target vehicle according to the vehicle adjustment strategy. This application, through its vehicle adjustment strategy, enables adaptive adjustment of the target vehicle's body height, resulting in higher approach and departure angles, improved vehicle passability, reduced operational difficulty in adjusting the vehicle's suspension height, and rapid and precise vehicle height adjustment.

The invention discloses a current cooperative driving method for a motor of a double-drive mill. The current cooperative driving method comprises the steps of slave closed-loop current driving, slave open-loop current driving and high-frequency current driving. If slave closed-loop current driving is adopted, the double motors serve as an integral control object, and a unified single control unit is adopted for control and synchronization; when the double-motor system works normally, one motor adopts a current rotating speed double-closed-loop control mode, and the other motor flexibly configures a torque instruction according to a set torque requirement to form a current loop model; when a double-drive mill system of a double-motor structure works, the required load torque is calculated according to instruction requirements and an actual load torque calculation model, and the required torques of different motors are optimized by adopting fuzzy control, so that synchronous control of the motors of the double-drive mill is formed. By introducing a current distribution mechanism of the double motors and master-slave cooperative control, high-efficiency, high-torque and reliable operation of the motors is realized.

This invention discloses a BeiDou-based field driving assistance system and method for rice direct seeding machines, comprising: a direct seeding machine, a central control computer, a soil mechanical property testing module, a paddy field structure variation prediction model, an assistance driving module, a field path planning module, and a BeiDou navigation module. The assistance driving system of this invention can predict the degree of paddy field structure variation based on a mathematical model of axle load and driving resistance, based on the tested subsidence depth. Utilizing the BeiDou navigation system, it plans the path for multiple trips of the agricultural machinery according to the principles of low driving resistance and minimal interference with seeds and seedlings, thereby reducing driving resistance and minimizing damage to seeds and seedlings. Simultaneously, it can increase the straightness of the agricultural machinery's movement, improve the precision of rice direct seeding, and further realize precision agriculture.

The present application relates to a kind of highway reconstruction period S type switching length calculation and dynamic speed limit control method, belong to intelligent transportation field.The method includes a set of data acquisition facilities and field information release facilities are set in switching place before and after and upstream, obtain each lane traffic flow data and release lane level dynamic speed limit control strategy;A set of road surface environment detection facilities are set in switching place, obtain each lane road surface environment condition and real-time friction coefficient;Input switching place and upstream and downstream road alignment condition and future each time period predicted traffic flow data, utilize simulation software to simulate and compare the traffic operating conditions when different speed limit values are used in switching, determine the initial speed limit value of switching place;Input switching place and upstream and downstream road alignment condition and initial speed limit value, utilize switching opening length calculation method, output opening length design value, calculate the design speed limit value of switching place;Real-time lane level road surface friction coefficient or traffic emergency is combined, and the speed limit value of S type switching place is dynamically adjusted.

The invention relates to the technical field of vehicle safety, in particular to an emergency braking system and a vehicle, the emergency braking system comprises a driving mechanism and a wear-resistant pressure-bearing assembly, and the driving mechanism is arranged on a carrier; the wear-resisting pressure-bearing assembly is connected to the output end of the driving mechanism and provided with a contact face used for abutting against the ground. Wherein the driving mechanism is used for driving the wear-resistant pressure-bearing assembly to be switched between a working position and a storage position; when the wear-resisting pressure-bearing assembly is located at the working position, the contact face abuts against the ground, and braking force is generated on the carrier through friction force. According to the emergency braking system, effective emergency braking can be conducted on the vehicle after vehicle braking fails, and safety is improved.