77results about How to "Prevent slippery slope" patented technology

The invention relates to a drive controller for sliding prevention of an electric vehicle. The drive controller at least comprises a speed control module and a pulse-width modulation (PWM) output module. The drive controller also comprises a sliding position judgment module. The sliding position judgment module is used for judging whether the electric vehicle is in a sliding position state or not, and if yes, the sliding position deviation of the electric vehicle is calculated; the speed control module is used for generating a set value of torque current after closed-loop proportional integral (PI) regulation is performed according to the set rotating speed and the actual rotating speed of a motor when the electric vehicle is not in a sliding state, and otherwise, the set value of the torque current is determined according to the actual rotating speed of the motor and the sliding position derivation of the electric vehicle. The invention also provides a drive control system and a drive control method for the sliding prevention of the electric vehicle. According to the drive controller, the drive control system and the drive control method for the sliding prevention of the electric vehicle provided by the invention, through adopting the mode that whether the electric vehicle is in the sliding state or not is judged, and if yes, a sliding prevention mode is started to calculate the sliding position deviation so as to determine the set value of the torque current, and otherwise, normal mode control is performed, so that the electric vehicle is effectively prevented from sliding.

The invention provides a control method of an electric automobile. The control method comprises the following steps: obtaining the current speed and the gear state of the automobile when an accelerator pedal and a brake pedal of the automobile are not depressed; when the current speed is smaller than a preset speed, and the gear state is a forward or reverse gear state, obtaining a proportion coefficient and an integral coefficient according to the characteristics of the automobile, and obtaining a speed difference between a target speed and the current speed; obtaining a proportion correcting coefficient according to the gear state, and obtaining an integral correcting coefficient according to the gear state and the speed difference; obtaining a final proportion coefficient according to the proportion coefficient and the proportion correcting coefficient, and obtaining a final integral coefficient according to the integral coefficient and the integral correcting coefficient; and performing PI control on the driving torque according to the speed difference, the final integral coefficient and the final integral coefficient so as to enable the current speed of the automobile to approach to the target speed. Through the adoption of the control method disclosed by the embodiment of the invention, the driving comfort of a driver can be improved, and the automobile can be prevented from sliding down a slope to a certain degree. The invention further provides the electric automobile.

The invention discloses a hill starting auxiliary control method for a vehicle directly driven by a motor. Serious hill slipping of the vehicle is avoided by superposition of an anti-slope torque without extra mechanical structures or sensors, hill starting auxiliary control of the vehicle can be realized according to an integral vehicle control strategy, and easiness in implementation is achieved. In addition, PI torque control is well adaptive to different gradients, quickness in torque response and high adaptability are realized, hill slipping risks are effectively reduced, and safety in hill starting is greatly improved.

The invention relates to a method and a system for preventing an electric automobile from slope slipping. The method for preventing the electric automobile from slope slipping comprises judging whether the electric automobile needs to enter into a slope slipping prevention mode or not according to current states of the electric automobile and starting the slope slipping prevention mode if the electric automobile needs to enter into the slope slipping prevention mode and obtaining the target accelerated speed according to the target automotive speed during the slope slipping prevention mode, detecting the automotive actual speed and the target accelerated speed in real time and controlling a motor to output driving torque until the actual speed achieves the target automotive speed during the process of adjusting the motor driving torque and confirming that a slope slipping function is achieved through an integral controller. According to the technical scheme of the method and the system for preventing the electric automobile from slope slipping, the driving torque for preventing the electric automobile from slop slipping is obtained according to the driving speed of the electric automobile, accurate motor driving torque is obtained with the target automotive speed serving as a control purpose and not influenced by other factors, and the electric automobile can be completely prevented from slope slipping.

The invention provides an electronic parking control system of an electric motor coach. The electronic parking control system comprises a single chip microcomputer, a hand braking switch, an automatic parking switch, an accelerator pedal, a braking pedal, a vehicle speed sensor, an angle sensor, a front axle solenoid valve, a rear axle solenoid valve, a hand braking solenoid valve, a parking indication lamp and an automatic parking indication lamp, wherein the output ends of the hand braking switch, the automatic parking switch, the accelerator pedal, the braking pedal, the vehicle speed sensor and the angle sensor are connected with the input end of the single chip microcomputer; the output end of the single chip microcomputer is connected with the front axle solenoid valve, the rear axle solenoid valve, the hand braking solenoid valve, the parking indication lamp and the automatic parking indication lamp. The invention further discloses a control method of the electronic parking control system of the electric motor coach. The functions of decelerating and braking, parking on a slope, automatically parking and the like of the electric motor coach can be reliably realized, and a slope sliding or slipping phenomenon can be prevented; the labor intensity of a driver is reduced, and the safety, controllability and driving comfort of the vehicle are improved.

The embodiments of the invention provide a motor torque control method and device as well as an electric automobile. The motor torque control method comprises the following steps of obtaining the current running state of the electric automobile; determining required target torque at the running state when the running state indicates that the electric automobile is at a down sliding state; and controlling the torque output by a motor of the electric automobile to be the target torque. The motor torque control method and device can reduce the down sliding condition happening to the electric automobile and facilitates the improvement of safety of the electric automobile.

The invention relates to a brake apparatus. The brake apparatus comprises a brake base, a brake handle and a self-locking handlebar, wherein an inclined baffle is arranged inside the brake base; two concave holes are formed in the bottom of the brake base to be used as first rotation centers; the brake handle is clamped in the concave holes of the brake base by virtue of lugs which are mounted on two sides of the brake handle; the brake handle can rotate backwards around the first rotation centers; the self-locking handlebar is clamped on the top of the brake handle; the self-locking handlebar is provided with second through holes and a second opening slot which is used for a brake cable to pass; the second through holes coincide with each other to fix the end part of the brake cable; a lock tongue is arranged on a first end of the self-locking handlebar; in a non-braking state, the lock tongue is not blocked by the baffle; in a braking state, a second rotation center is rotated along with the brake handle while the brake handle is rotated backwards and thus a pull force is generated by the brake cable to drive the lock tongue to move, so that the lock tongue is blocked by the baffle to realize self-locking.

The invention provides a control method for uphill auxiliary and parking of an electric bicycle. The control method comprises the steps that a controller starts an uphill auxiliary function, relieves a braking power off function and enters a maximum starting torque mode; under the maximum starting torque mode, once a rotary handle rotating signal is obtained by the controller, the controller controls a motor to output the maximum torque regardless of the magnitude of the strength or the amplitude of the rotary handle rotating signal so that the electric bicycle can obtain the maximum starting power during starting; and when the controller detects that the motor reaches the specified rotating speed, the uphill auxiliary function is relieved, and the braking power off function is recovered. According to the control method for uphill auxiliary and parking of the electric bicycle, the braking force and the maximum starting torque of the electric bicycle can be kept at the same time during parking and starting of the electric bicycle in the uphill process, so that the situation that the electric bicycle slides down from a slope is prevented.

The invention discloses a hill-hold control system of an electric vehicle. The system comprises a slope module, a vehicle speed module, a brake module, an accelerator module and a controller; the output end of the slope module is connected with a first input end of the controller, the output end of the vehicle speed module is connected with a second input end of the controller, the output end of the brake module is connected with a third input end of the controller, and the output end of the accelerator module is connected with a fourth input end of the controller; the slope module is used for obtaining slope signals of a road, the vehicle speed module is used for obtaining vehicle speed signals, the brake module is used for obtaining brake signals, the accelerator module is used for accelerator signals, the controller is used for obtaining the operating mode of the electric vehicle according to the road slope and the vehicle speed, obtaining accelerating signals according to the accelerator signals at the same time, and outputting the brake signals and the accelerating signals when the operating mode is a hill-hold start mode.

The invention relates to an anti-slope-slipping driving controller of an automobile. The driving controller comprises a slipping position detection module, a speed control module and a feedback output module, wherein the slipping position detection module is used for judging whether the automobile is in a slipping position state or not, the speed control module is used for generating a given rotating speed omega[r]<*> and a given value i[d]<*> of an exciting current and generating a given value i[q]<*> of a torque current according to the given rotating speed omega[r]<*>, and the feedback output module is used for generating a torque voltage signal u[q]<*> and an exciting voltage signal u[d]<*> according to the given value i[q]<*> of the torque current and the given value i[d]<*> of the exciting current respectively and outputting the values to a three-phase inverter so that a motor can be driven to operate. The invention further provides an anti-slope-slipping driving control system and method of the automobile. According to the driving controller and the control system and method, an anti-slope-slipping mode is started by judging and detecting whether the automobile is in a slipping position state or not, the adaptability of the anti-slope-slipping control system is effectively improved, and the timeliness is improved.

The invention discloses a method and device for preventing a vehicle from sliding downward on slopes, wherein the method for preventing the vehicle from sliding downward on slopes comprises the following steps: acquiring the gear information and headstock angle information of the vehicle and the brake state of a brake pedal; judging the upslope state and downslope state of the vehicle according to the gear information and the headstock angle information, and when the vehicle is in the upslope state or the downslope state and the brake pedal is braked, respectively acquiring first, second, third and fourth inclination angle signals of first, second, third and fourth wheels of the vehicle; and generating slope stabilizing torque and climbing assistant coefficients according to the first, second, third and fourth inclination angle signals, and generating distributed slope stabilizing torques of first, second, third and fourth motors corresponding to the first, second, third and fourth wheels according to the slope stabilizing torque and climbing assistant coefficients as well as the upslope state and downslope state of the vehicle. The method and device for preventing the vehicle from sliding downward on slopes, disclosed by the invention, can effectively prevent the vehicle from sliding downward when the vehicle is parked on various slopes; and when one motor is damaged or two motors are damaged or the output torque is limited, the vehicle can also be ensured to be stabilized on the slopes.

The invention discloses a caterpillar drive unit for a coal mine disaster relief robot. The caterpillar drive unit for the coal mine disaster relief robot comprises an angle steel support beam, a front drive system, a rear drive system, a support wheel system, a tug device and a caterpillar band; the front drive system is arranged at the front end of the angle steel support beam and comprises a front drive wheel; the rear drive system is arranged at the rear end of the angle steel support beam and comprises a rear drive wheel; the support wheel system is arranged at the bottom of the angle steel support beam and comprises support wheels; the tug device is arranged at the top of the angle steel support beam and comprises lifting wheels; the caterpillar band is wound on the front drive wheel, the rear drive wheel, the support wheels and the lifting wheels. Due to the caterpillar drive unit for the coal mine disaster relief robot, the coal mine disaster relief robot can better adapt to the geological conditions after a coal mine disaster, the caterpillar band has two different drive modes, different drive modes can be selected according to different terrains, a ramp brake function is achieved, and the occurrence of a ramp sliding phenomenon can be well prevented.

The invention provides an automobile drive control method and device, and relates to the technical field of automobiles. The automobile drive control method is applied to an electric automobile drivenby four motors and comprises the steps that when a brake pedal of an electric automobile is detected to be changed from effectiveness to non-effectiveness, and when the electric automobile moves in reverse, whether the temperature of all the four motors is lower than the preset temperature or not is detected; if so, the electric automobile is kept in a hill-holding state, and the target rotatingspeed of the four motors is controlled to be 0; when the command driving torque of the four motors is greater than the hill-holding torque of the hill-holding state, the four motors are all controlledto enter into a torque response state, so that the electric automobile enters into an uphill mode; whether the electric automobile skids or not is judged based on the speed of four wheels of the electric automobile; if so, the corresponding torque compensation amount for skidding wheels is calculated; and the corresponding motor speed of the wheels is controlled based on the torque compensation amount. The automobile drive control method can realize the drive control of the electric automobile driven by the four motors when electric automobile goes uphill.

The invention relates to a static braking device for a flat car. The braking device comprises wheels, an axle and a traction handle, wherein the axle is arranged between two wheels, ratchet wheels are fixed on the inner sides of the two wheels respectively, the traction handle is hinged on the axle, a connecting rod bolt is hinged on the traction handle, the other end of the connecting rod bolt is hinged on a braking beam which is parallel to the axle, two guide pillar conduit components are arranged between the braking beam and the axle, and toothed brake pads matched with the ratchet wheels are fixed at two ends of the braking beam respectively. According to the braking device, the connecting rod mechanism is adopted to drive the toothed brake pads to be meshed with the ratchet wheels for braking, the structure is simple, the braking is safe and reliable, so that slip on a slope or slippage of vehicles can be prevented effectively; and due to the guide pillar conduit components, locking of the vehicles during operation can be prevented effectively, and system sensitivity can be increased.

The invention discloses an optimized walking aid special for a lower limb osteoarthrosis patient. The optimized walking aid includes a first armpit supporting frame, a second armpit supporting frame,a transverse U-shaped connecting frame and an auxiliary supporting frame. The first armpit supporting frame and the second armpit supporting frame are arranged side by side; the transverse U-shaped connecting frame is disposed on the front sides of the first armpit supporting frame and the second armpit supporting frame, two rear ends of the transverse U-shaped connecting frame are correspondinglyconnected with the front middle portion of the first armpit supporting frame and the front middle portion of the second armpit supporting frame; and the upper end of the auxiliary supporting frame isconnected with the middle portion of the lower bottom surface of the transverse U-shaped connecting frame. The optimized walking aid has the advantages that the first armpit supporting frame and thesecond armpit supporting frame facilitate the supporting of the armpit of the lower limb osteoarthrosis patient, so that labor is saved during walking, the auxiliary supporting frame facilitates the standing of the optimized walking aid, so that the lower limb osteoarthrosis patient can relax their hands and do other things, and the lower limb osteoarthrosis patient can use the hands to alternately move the first armpit supporting frame and the second armpit supporting frame or synchronously move the first armpit supporting frame and the second armpit supporting frame according to the requirements, to make the use more flexible.

The invention discloses a P gear parking system control method which comprises the following steps: when a complete vehicle is powered off, detecting a P gear signal, a driving motor rotary speed signal and a vehicle speed signal to collaboratively judge and drive a P gear actuator to keep the current position or lock; and when the complete vehicle is powered on, detecting a brake panel signal, adriver seat belt buckle inserting signal and a vehicle door closing signal to collaboratively judge and drive the P gear actuator to keep the current position or unlock. The P gear parking system control method can improve the vehicle safety to prevent the vehicle from sliding a slope or preventing the P gear from being removed in the unsafe state.

The invention provides an automatic braking and parking unlocking system and method suitable for a forklift. The automatic braking and parking unlocking system comprises a controller for receiving various signals, conducting computing treatment and sending an instruction, an accelerator pedal switch electrically connected with the controller and used for sending an accelerator pedal signal to thecontroller, an advancing / retreating gear switch electrically connected with the controller and used for sending an advancing / retreating gear signal to the controller, a speed sensor electrically connected with the controller and used for colleting vehicle driving speed data and sending the data to the controller, and a pressure switch communicated with a parking and braking electromagnetic valve,electrically connected with the controller and used for detecting whether the pressure of an energy accumulator is normal or not and sending a pressure switch signal to the controller. The automatic braking and parking unlocking system has the advantages that automatic parking can be realized, slope sliding is effectively prevented, parking is automatically unlocked when the forklift is started, parking and braking do not need to be frequently carried out, and labor intensity is relieved.

The invention discloses a motor torque control method and system. The motor torque control method comprises the steps that whether an automobile is in a parking idling state or not is judged accordingto a working condition signal; when the automobile is in a parking idling state, the pre-torque T of the motor is output firstly; and the actual torque T1 of the motor is obtained according to the pre-torque T of the motor and the brake pedal signal B. According to the control method of the motor torque, the actual torque T1 of the motor is obtained according to the pre-torque T of the motor andthe brake pedal signal B, and the problem that certain time delay exists when a brake is completely loosened to enter a creeping working condition to a whole automobile controller to calculate and output the torque can be effectively solved. Therefore, when the automobile is on a flat road, the actual torque T1 can improve the power response timeliness of creeping starting; and when the automobileis on a ramp, the actual torque T1 can counteract a certain degree of ramp load to prevent the automobile from sliding on the ramp or relieve the degree of slope sliding on the ramp.

The invention discloses an anti-slope-sliding function control method for an electric vehicle. The anti-slope-sliding function control method comprises the following steps that S1, when it is judged that the vehicle is on a slope and the current vehicle is static on the slope, an anti-slope-sliding function is entered to execute the next step; S2, when it is judged that the vehicle is currently inthe slope sliding state, the next step is executed; S3, the VCU sends an anti-slope-sliding signal to the MCU, and the VCU requests the motor torque to be reset; and S4, the MCU calculates PI parameters needing to be executed currently, and the output torque of the motor is adjusted according to the PI parameters. The anti-slope-sliding function control method and system are compatible with the electric vehicle with the HHC, the electric vehicle is further protected after the HHC exits, slope sliding is prevented, and the problem of slope sliding during slope starting of the electric vehiclewithout the HHC can also be solved.

This invention relates to one computer control safeguard chip, which comprises computer control signal emission to recycle circuit, intelligent control circuit, anti-slide control circuit, drowning safeguard device, car adhesive parameter controller and repel sensor and execution function system, wherein the car is added with computer control system to compute collision car danger distance through self speed sensor and guide sensor, resistance sensor, adhesive sensor, thermal release sensor, weight sensor to order car for safe distance.

The invention provides an anti-slope-sliding control method and device and a vehicle. The method comprises the steps of obtaining the current inclination angle of the vehicle; under the condition that it is determined that the vehicle is in the anti-slope-slipping working condition according to the inclination angle, if it is determined that the vehicle is not in the ESP stable slope state currently, obtaining the brake pedal opening degree of the vehicle; determining the current slope stabilizing torque according to the inclination angle and the opening degree of the brake pedal; and controlling a driving motor in the vehicle to output power according to the current slope stabilizing torque. Under the condition that it is determined that the vehicle is in the anti-slope-slipping working condition, the current slope stabilizing torque can be adjusted according to the inclination angle and the brake pedal opening degree, even if the brake pedal is not stepped on, a drive motor in the vehicle can be controlled to conduct power output according to the current slope stabilizing torque, slope slipping of the vehicle can be effectively prevented, and safety performance of a vehicle is enhanced.

The invention discloses a hybrid electric vehicle and a slope stabilization control method and device thereof. The hybrid electric vehicle comprises an engine, a power motor, a power battery, and an auxiliary motor connected with the engine, the power motor and the power battery. The engine outputs power to wheels of the hybrid electric vehicle through a clutch. The power motor is used for outputting driving force to the wheels of the hybrid electric vehicle, the auxiliary motor is driven by an engine to generate electricity, and the method comprises the steps that when the hybrid electric vehicle is located on a slope, if the power motor breaks down, whether the hybrid electric vehicle meets the slope stabilization control condition or not is judged; if the hybrid electric vehicle meets the slope stabilization control condition, the hybrid electric vehicle is controlled to enter an auxiliary motor slope stabilization control mode, the auxiliary motor is controlled to output torque tothe engine, reverse force is provided for the wheels through the engine, the hybrid electric vehicle is subjected to slope stabilization control, and therefore the hybrid electric vehicle can be prevented from sliding on the slope, and driving safety can be guaranteed.

The invention provides a vehicle slope starting method and device, a vehicle, electronic equipment and a storage medium, and the method comprises the steps: determining a target current of the vehicle if it is judged that a slope parking event occurs, the target current being determined based on a torque current before the vehicle stops on a slope; after the slope starting instruction is received, controlling a speed controller of the vehicle to increase the current torque current to the target current; and after the duration of maintaining the current torque current at the target current is greater than or equal to the preset duration, controlling the vehicle to start on a slope. When the slope parking event occurs, the current torque current is increased to the target current, and when the slope starting instruction is received and the duration of maintaining the current torque current at the target current is greater than or equal to the preset duration, the vehicle is controlled to start on the slope, so that the vehicle has a torque slightly greater than the self-weight load of the vehicle body when starting on the slope; and the problem of backward sliding during slope starting is effectively prevented.

The invention relates to a slope stabilizing control method and device, computer equipment and a storage medium. The method comprises the steps that the slope stabilizing duration of a vehicle in a slope stabilizing state is obtained, the slope stabilizing torque of the vehicle in the slope stabilizing state is obtained, and the accelerator opening degree of the vehicle is obtained; if the slope stabilizing duration exceeds the preset duration and the accelerator opening degree of the vehicle is smaller than the accelerator opening degree threshold value, an electronic hand brake of the vehicle is controlled to be started, and the slope stabilizing torque of the vehicle is controlled to be gradually reduced to 0; the accelerator opening degree of the vehicle is continuously obtained, and if the accelerator opening degree of the vehicle is not smaller than the accelerator opening degree threshold value, the total output torque of the vehicle is obtained; and if the total output torque of the vehicle is larger than the slope stabilizing torque, an electronic hand brake of the vehicle is controlled to be closed. By the adoption of the method, the purposes of preventing slope sliding during slope parking and improving slope starting stability can be achieved.

The invention discloses an electric independent steering system and a control method thereof, and belongs to the field of motor vehicle steering devices; the electric independent steering system comprises an angle sensor, a speed sensor, an inertial navigation module, an axle distance measurement module, a parking signal measurement unit, a shutdown signal measurement unit and a control unit; thespeed sensor is arranged on each driving wheel; and the inertial navigation module, the axle distance measurement module, the parking signal measurement unit, the stop signal measurement unit, the angle sensor and the control unit are arranged on a frame. According to the electric independent steering system and the control method thereof, by controlling the angles and directions of steering wheels on the left side and the right side, a chassis can be prevented from sliding and sliding on a slope; the steering accuracy of the chassis can be ensured, and the steering operation is simplified toensure that the expected heading direction of an operator is reached as soon as possible.

The invention provides an anti-slip cable winding and unwinding vehicle which comprises a vehicle frame, a wheel assembly, a speed measurement sensor assembly, a brake and a disc brake pad. The wheelassembly comprises an axle, bearings with vertical type seats, tires, flat keys, second flat washers, second elastic washers, axle nuts, cotter pins, hub flanges, hub nuts and speed measurement discs.The axle is connected with the vehicle frame through the bearings with the vertical type seats; the tires are circumferentially fixed relative to the axle through the flat keys and axially fixed relative to the axle through the second flat washers, the second elastic washers, the axle nuts and the cotter pins, all of which are sequentially arranged; the hub flanges are arranged on the tires, andthe speed measurement discs are fixed through the hub nuts; the speed measurement sensor assembly is arranged on the vehicle frame and used for detecting the rotation speed of the speed measurement discs; the brake is arranged on the vehicle frame; the disc brake pad is arranged on the axle; and when the speed measurement sensor assembly detects that the rotation speed of the speed measurement discs is larger than a preset value, the brake holds the disc brake pad.

The invention discloses a large-angle high-thickness slope surface concrete pouring graded grid. The large-angle high-thickness slope surface concrete pouring graded grid is composed of meshes and a supporting mounting system; the supporting mounting system is paved along the slope surface, and galvanized electrowelding steel wire gauze is adopted in the meshes; and the width of the graded grid isslope surface concrete thickness minus the thickness of an upper protective layer and a lower protective layer and the diameter of an upper layer of steel bars and a lower layer of the steel bars, aninterval of the meshes placing is determined through the galvanized steel wire mesh theory maximum ash blocking quantity water level and a perpendicular distance from a slope surface intersection tothe meshes, so that the meshes better block ash, and the concrete slope slipping phenomenon is controlled. According to a field slope surface structure, the limitation of concrete pouring slump limitand the pouring procedure of concrete, the concrete is poured in two layers, and vertical partition meshes are arranged and pouring is carried out by dividing left and right parts of each layer. Whenthe concrete is poured, pouring phenomena of large area and high pressure do not exist, and the slope surface is stable. The problems of increased operating personnel operating quantity, slow construction speed, low efficiency, prolonged construction period and the like are solved.

The invention provides a parking device for an electric vehicle and relates to the field of vehicle electronics. The parking device for the electric vehicle comprises a parking body, parking calipersare welded to the left side of the parking body, and a braking disc is arranged in a parking calipers U-shaped groove; the interior of the parking body is hollow, and a driving device is fixedly connected to the top of the inner wall of the parking body. According to the parking device for the electric vehicle, when an electric push rod pushes a push block to move, the push block can move along asliding inclined groove, and the sliding inclined groove is parallel to a sliding face in a wedge groove, tightly attached to a wedge block, so that when the push block pushes the wedge block to moveobliquely, the wedge block can conduct push operation along a contact face of the wedge groove and a parking braking disc can be in contact operation with a braking disc; the wedge block conducts pushing along the contact face of the wedge groove, so that connection between the braking disc and the parking braking disc is more stable, and the situation is reduced that the parking braking disc is in unstable contact with the braking disc.

The invention discloses a slope operating platform. The slope operating platform comprises a supporting frame and a movable platform arranged on the supporting frame. The supporting frame comprises a first supporting cross rod, a second supporting cross rod, a third supporting plate and a connecting plate, a first supporting plate and a second supporting plate are installed on the first supporting cross rod and the second supporting cross rod, one end of the first supporting cross rod is rotationally connected with one end of the second supporting cross rod through the connecting plate, the other end of the second supporting cross rod is rotationally connected with one end of the third supporting plate, and a sliding rail is arranged on the second supporting plate. The slope operating platform is convenient to mount and move, the working efficiency is improved, the height difference between a first moving wheel and a second moving wheel can be adjusted under the action of an adjusting mechanism, so that it is guaranteed that the device can move on slopes with different gradients, the adaptability of the device is improved, a worker can work conveniently by arranging a moving platform, the working efficiency is improved, and the safety of the movable platform is guaranteed by arranging a fixing mechanism.

The invention discloses a ratchet wheel type auxiliary device for vehicle hill starting, and belongs to the field of vehicle control devices. The ratchet wheel type auxiliary device for vehicle hill starting comprises a ratchet wheel, a locking claw and a pull rod; the ratchet wheel is installed on a power input shaft of a transmission, the locking claw is installed on a shell of the transmission and further provided with a friction plate matched with the ratchet wheel, and the pull rod is connected with the first gear and the reverse gear of the transmission; when the transmission is at any gear except for the first gear and the reverse gear, the pull rod pushes the locking claw to enable the locking claw and the friction plate to be separated from the ratchet wheel; and when the transmission is at the first gear or the reverse gear, the pull rod contracts, the locking claw falls under the effect of gravity to enable the friction plate to be in contact with the ratchet wheel, the ratchet wheel drives the locking claw to rotate during reverse rotation, and therefore the locking claw is meshed with ratchets of the ratchet wheel. According to the ratchet wheel type auxiliary device, the ratchet wheel and the locking claw are additionally installed on the vehicle transmission so as to assist in vehicle hill starting, vehicle sliding on a hill is effectively prevented, the structure is simple, operation is easy, the refitting cost is low, and convenience is brought to popularization.