818 results about "Speed reduction" patented technology

The invention discloses a double-closed-loop cooperative control method of a direct-drive electric chassis and a power system, relates to the technical field of power control of electric special vehicles, and provides a rotating speed and torque double-closed-loop cooperative control architecture, and realizes double-core real-time cooperative operation and dynamic optimization of motor output characteristics through a 32-bit processor. A direct-drive transmission structure is combined, a traditional speed reduction device is omitted, a flat wire motor directly drives a rear axle through a transmission shaft, and a four-in-one controller is matched, so that the system loss is reduced by 33%, and the power density is improved by 15%; on the basis of real-time temperature / electric quantity data of a lithium iron phosphate battery management system, control parameters are adaptively adjusted, and the bottleneck of performance attenuation in a low-temperature environment of-35 DEG C is broken through; and a high-voltage interlocking and insulation monitoring module is integrated, and an emergency hydraulic system is automatically switched when an electrical fault occurs, so that multi-stage safety guarantee is formed. According to the technology, the energy recovery efficiency is remarkably improved by 20%, and the wind resistance stability and the extreme environment reliability are effectively enhanced.

The utility model discloses an automatic window opening machine, and relates to the field of window opening equipment. The automatic window opening machine comprises a box body, a driving assembly, a speed reduction chain assembly, a transmission chain assembly, an electromagnetic clutch component and a fluid damping component, the speed reduction chain assembly is jointly driven by the first driving part and the second driving part, so that the power and the cruising ability of the window opening machine are improved; during window opening work, the electromagnetic clutch component is switched to be in the state that the input end of the transmission chain assembly and the speed reduction end of the speed reduction chain assembly are connected and combined so as to implement window opening work. The acting force of transmission of the transmission chain assembly is damped by the fluid damping part, so that the force transmission effect of the transmission chain assembly is relieved, and the risk that the speed reduction chain assembly and the transmission chain assembly are damaged is reduced. According to the automatic window opening machine, buffering damping is provided for power attenuation or power reverse change through the fluid damping component, damage to a transmission structure can be reduced, the service life of the window opening machine can be prolonged, and operation stability of the window opening machine can be improved.

The invention discloses a rollover risk pre-judgment and speed closed-loop control system and method integrating an IMU and an encoder, and relates to the technical field of vehicle active safety control. The system comprises an inertial measurement unit, an encoder, a controller, an execution mechanism and an alarm, the inertial measurement unit provides vehicle attitude data, and the encoder provides vehicle speed information. And the controller fuses the data in real time to calculate a vehicle rollover risk index, and sets a double-threshold criterion: when the risk is close to a threshold, an early warning is given, and when the risk exceeds the threshold, a deceleration control instruction is sent to the execution mechanism. The executing mechanism adjusts vehicle power output or braking accordingly, and automatic speed reduction is achieved. The controller forms a closed-loop control loop through feedback of the encoder, the speed reduction force is dynamically adjusted, and the speed of the vehicle is stably reduced to a safe range. Through the method, the rollover risk of the vehicle can be sensed in advance and actively intervened, rollover accidents are avoided, and the rollover-resistant safety of the vehicle is remarkably improved.

The invention relates to the technical field of automobile safety, and provides an electric tail gate anti-pinch control method and system, which introduces a prediction + self-adaption intelligent decision normal form, on one hand, the motion information of a tail gate is obtained, and the time sequence data of an obstacle is combined to be input into an LSTM model to predict the track of the obstacle; a collision prediction conclusion is output to be matched with a graded speed reduction strategy to execute tail gate control, and through prediction in advance, the system response efficiency is effectively improved, and the clamping damage probability is reduced; and on the other hand, when a contact signal of the tail gate is detected, real-time contact force and real-time vehicle working condition information are obtained in real time, a dynamic anti-pinch threshold value is calculated and compared with the real-time contact force for analysis so as to execute tail gate control, the dynamic anti-pinch threshold value is dynamically adjusted according to the vehicle working condition and the tail gate state, scene adaptation is carried out, the anti-pinch recognition accuracy can be improved, and the safety of the vehicle is improved. The false triggering probability is reduced; therefore, the electric tail gate anti-pinch system which is faster in response, more intelligent and more reliable is obtained.

The invention relates to the technical field of deceleration motor monitoring and diagnosis, in particular to a deceleration motor health state on-line monitoring and fault diagnosis system, which comprises an operation signal acquisition module for acquiring and processing a signal to generate a trend set, and a vibration and current difference spectrum identification module for establishing a mapping to generate a coupling set, the rotating speed response correlation analysis module analyzes fluctuation and generates a relation graph, the component state diagnosis module identifies abnormal nodes and generates a state set, and the health and fault confirmation module accurately locates fault source points and generates fault identification results through multi-dimensional cross comparison. Through same-period multi-dimensional signal alignment and response identification, dynamic mapping and difference association are established, a quantitative trend and an electromechanical track are formed, coupling analysis integrity is improved, an electromechanical change rule is synchronously extracted, feature response is quantitatively expressed, abnormal node identification precision is enhanced, early fault capture sensitivity and identification are improved, data isolation is reduced, and the method is suitable for large-scale popularization and application. And a logic consistent health judgment basis is constructed.

The invention provides a cooling and lubricating system, a vehicle and a control method of the cooling and lubricating system. The system comprises an oil pan and a conveying pipeline, and the inlet end of the conveying pipeline communicates with the oil pan; the power element, the filtering element, the driving element, the heat exchange element and the speed reduction element are sequentially arranged on the conveying pipeline in the conveying direction of lubricating oil. The outlet end of the conveying pipeline communicates with the oil pan. The temperature detection part is arranged between the filtering element and the driving element so as to detect the real-time temperature of the lubricating oil filtered by the filtering element; and the controller is connected with the temperature detection part so as to control at least one of the rotating speed of the power element, the rotating speed of the driving element, the rotating speed of the speed reduction element and the heat exchange efficiency of the driving element according to the real-time temperature. And the size is huge.

The invention discloses a highway service area safety prevention and control method and system based on artificial intelligence, and relates to the technical field of highway service area safety prevention and control. Through an environment adaptive dynamic compensation mechanism, the problems of poor image quality, detail loss, high noise and the like under different light conditions are effectively solved, the details of the image are supplemented, and the image quality is improved; an image recognition detection algorithm is utilized to accurately record information such as pedestrian flow and vehicle types, and a reliable basis is provided for safety risk prevention and control; the vehicle circulation rate, the population circulation rate and the dangerous chemical risk degree are integrated to calculate the actual risk degree of the danger, and the potential risk of the service area can be comprehensively reflected, so that a scientific, reasonable and targeted safety risk prevention and control scheme is formulated. The speed reduction condition of the vehicle is monitored and reported in real time, the safety management efficiency of the service area is effectively improved, the accident rate is reduced, and safe operation of the expressway service area is guaranteed.

The invention relates to the technical field of scissor fork truck brake control, and discloses a scissor fork type aerial work platform walking brake control system and method.The scissor fork type aerial work platform walking brake control method is characterized in that an operation handle enables a key to reset and triggers a brake request, and initialization and triggering of a brake control sequence are achieved; the state of the shear fork truck is monitored, gradient and load information is collected, and the external environment working condition and the internal load state are synchronously obtained by calling data of a tilt angle sensor and a pressure sensor in real time; according to rapid braking of the shear fork truck, based on data collected in real time, a three-stage cooperative braking strategy of speed reduction, pressure relief and turn-off is adopted, and based on gradient information collected in real time, the switching time sequence between stages is adjusted in a self-adaptive mode, and accurate matching of the braking process, dynamic loads and topographic conditions is achieved; therefore, the effect of considering the braking efficiency and the terminal parking stability on the premise of no mechanical wear is achieved; and the shear fork truck completes braking and tends to stop stably. And different working conditions can be quickly, stably and adaptively adapted.

The invention discloses a safety interlocking system of a formula warehouse stocker and a use method thereof, and belongs to the technical field of warehouse equipment safety, and the safety interlocking system comprises a safety state monitoring module which is used for monitoring safety state information in a stocker roadway in real time; the control module is in communication connection with the safety state monitoring module and is used for receiving and processing the safety state information and generating a control instruction according to preset safety logic; the brake execution module is arranged on the stacking machine, is in signal connection with the control module and is used for receiving the control instruction and executing corresponding speed reduction or brake operation on the stacking machine; and the man-machine interaction and alarm module is in communication connection with the control module and is used for displaying the system state, giving an alarm prompt and receiving a manual instruction. According to the invention, the risk of mechanical injury when personnel enter the roadway is effectively avoided, and the automatic safety level and the overall reliability of the operation of the stacker in the formula warehouse are remarkably improved.

The present application relates to the technical field of speed reducer, especially to a hollow composite planetary speed reducer, which comprises a machine shell, an input shaft rotatably connected to the machine shell, a sun gear fixedly connected to the input shaft, an outer gear ring installed in the machine shell, three planetary gears meshing between the outer gear ring and the sun gear, a planetary carrier rotatably connected to the three planetary gears, a worm fixedly connected to the planetary carrier, a rotating shaft rotatably connected to the machine shell, a worm wheel meshing with the worm and fixedly connected to the rotating shaft, and an output shaft rotatably connected to the rotating shaft. The present application combines the planetary speed reducer with the worm and worm gear speed reducer to form a composite speed reducer, which solves the self-locking defect of the planetary speed reducer and the low efficiency problem of the worm and worm gear speed reducer, and realizes secondary speed reduction, thereby increasing the transmission ratio and reducing the overall size of the device, improving the working efficiency and safety of the speed reducer.

The invention discloses a compatible system for an MT test bench to adapt to an AT transmission and a test method, and belongs to the technical field of transmission test. The system comprises a driving motor base translation mechanism, a driving motor, a simulation crankshaft, a 6-to-8 adapter flange, a tested AT transmission, an oil pressure collection box, an engine oil external circulation device and the like. Mechanical adaptation is achieved through a 6-to-8 adapter flange and an I-shaped telescopic transmission shaft, a gear box can be switched between a constant speed mode and a speed reduction mode to adapt to different gears, a motor base translation mechanism is driven to adjust the coaxiality, and the oil temperature is controlled to be 105 + / -5 DEG C through an engine oil outer circulation device; the test method comprises the steps of preprocessing, assembly connection, initialization setting, test operation, monitoring recording and resetting, tests comprise a running-in test and a fixed gear durability test, oil pressure data are transmitted in two paths, and automatic shutdown is carried out when abnormity occurs. By transforming the idle MT rack, AT transmission test compatibility is achieved, and the advantages of improving the resource utilization rate, reducing the cost, enhancing the test adaptability and reliability and the like are remarkable.

A lane hazard mitigation algorithm includes a sensor for detecting a first hazard in a host road lane and a second hazard in an adjacent road lane, a processor for determining a host lane mitigation including a host lane speed reduction in response to the first hazard and an adjacent lane mitigation including an adjacent lane speed reduction in response to the second hazard, the processor being further configured to generate a lane change control signal in response to the adjacent lane speed reduction being less than the host lane speed reduction and to generate a vehicle speed reduction control signal in response to the host lane speed reduction being less than the adjacent lane speed reduction, and a vehicle controller for controlling a host vehicle in response to the lane change control signal and the vehicle speed reduction control signal.

The invention relates to the technical field of robots, and provides a robot and a safety control method, device and equipment thereof, a storage medium and a product, the robot comprises electronic skin, the electronic skin comprises a first detection unit and a second detection unit, and the method comprises the following steps: responding to an obstacle approaching the robot, and detecting the approaching speed of the obstacle through the first detection unit; in response to the approaching speed being greater than or equal to a preset speed threshold value, controlling the robot to perform obstacle avoidance path planning and / or speed reduction; detecting a contact force and a contact moment of the obstacle through a second detection unit in response to the obstacle contacting the robot; and determining safety braking parameters of the robot based on the approaching speed, the contact force and the contact moment. Safety speed monitoring based on proximity detection and power and force limitation based on contact detection in man-machine cooperation can be achieved at the same time, a dual protection mechanism of proximity sensing and contact sensing of the robot is achieved, and safety is further improved.

The invention discloses a double-cycloid speed reducer belonging to the technical field of speed reducers, which comprises an input shaft, a first cycloid mechanism and an output shaft, and is characterized in that a second cycloid mechanism is arranged between the first cycloid mechanism and the output shaft, the second cycloid mechanism is connected in series with the first cycloid mechanism through a transmission shaft, the transmission shaft is linked with the first cycloid mechanism, and the output shaft is connected with the output shaft. The input shaft rotates to drive the transmission shaft to rotate at a reduced speed through the first cycloid mechanism, and the transmission shaft rotates to drive the output shaft to rotate at a reduced speed through the second cycloid mechanism. The first cycloid mechanism and the second cycloid mechanism are arranged in series through the transmission shaft to form a two-stage speed reduction structure of the speed reducer, large-speed-ratio transmission of the speed reducer is achieved, and low noise, low temperature rise, high bearing capacity and high rigidity of the speed reducer in the operation process are kept.

The utility model belongs to the technical field of motorcycle parts, and discloses a mechanical motorcycle flameout switch structure which comprises a shell, a fixing presser foot is arranged on the inner wall of the bottom end of the shell through a positioning bolt, a wire welding plate is arranged on the outer wall of the fixing presser foot, a fixing block is arranged on the outer wall of the wire welding plate through a reinforcing bolt, and the fixing block is arranged on the outer wall of the fixing presser foot. A gasket is in contact with the outer wall of the reinforcing bolt, a flameout button is rotationally connected to the outer wall of the fixing block, a locking mechanism is arranged on the inner wall of the flameout button, a guide telescopic rod is fixedly connected to the inner wall of the flameout button, and a positioning ball is elastically connected to the inner wall of the flameout button through a reset spring A. Through the arrangement of the flameout button, the operation of speed reduction, braking and flameout can be rapidly completed, and under the arrangement of the locking mechanism, the problem of starting and stopping of the flameout switch caused by mistaken touch can be effectively avoided, and the problem of accidents caused by mistaken touch in the driving process is avoided.

The present application relates to a speed reduction device and a speed reducer, which are applied to the field of mechanical transmission. The speed reduction device comprises a drive unit, a transmission block, a driving unit and a driven unit, wherein the driving unit passes through the transmission block and is in threaded connection with the transmission block; the drive unit drives the driving unit to generate movement, and the driven unit is driven to generate movement under the drive of the transmission block; and when the drive unit is actuated, the rotating speed of the driving unit is greater than that of the driven unit. The present application has the technical effects that the problem of arranging a speed reduction device with a large reduction ratio in the case where a radial space is limited and an available space is elongated is solved, and the output requirement of a large torque can be met, such that the operation effect of the speed reduction device is improved.

The invention provides a torque coordination control method and system of a hybrid power vehicle and the vehicle, the vehicle at least comprises an engine and a generator, and the method comprises the steps that when the vehicle is in a parallel drive mode, the engine demand torque of the whole vehicle is monitored at a first preset frequency; when it is monitored that the required torque of the engine is reduced and the reduction rate is larger than a first preset threshold value, a rapid compensation mode is started; after entering the rapid compensation mode, continuously monitoring the required torque of the engine; and if the rapid compensation mode is not triggered again within the second preset duration, switching to the slow adjustment mode. The torque coordination control method provided by the invention is applied to the hybrid power vehicle, thrust angle torque reduction of the engine is avoided through negative torque intervention of the generator, stable speed reduction of the hybrid power vehicle is realized, fuel oil waste is avoided, and meanwhile, the energy utilization rate of the generator is improved.

The utility model relates to the field of automobile transmission devices, in particular to a ratchet wheel type automobile differential mechanism lock which comprises a differential mechanism and a half shaft, a ratchet wheel mechanism is arranged on the half shaft, the differential mechanism is provided with a driving piece used for driving the ratchet wheel mechanism, and a gear shifting fork used for moving the position of the ratchet wheel mechanism is further arranged on the half shaft. The ratchet mechanism is used for switching forward or reverse gears, and a speed reduction assembly is arranged between the ratchet mechanism and the driving piece. The driving piece is arranged on the differential mechanism to drive the ratchet wheel mechanisms on the left half shaft and the right half shaft, when one wheel slips, due to the principle of the differential mechanism, the other wheel half shaft stops rotating, pawls in the ratchet wheel mechanisms drive the ratchet wheels to rotate, then the ratchet wheels drive the half shafts to rotate, and a differential mechanism lock does not need to be frequently opened and closed. Therefore, the problem that the differential lock needs to be continuously opened and closed under different road conditions can be solved.

The operation control method includes: executing travel control related to travel of the work machine; and adjusting acceleration until time at which a travel speed of the work machine reaches target speeds V1, V2 during the speed reduction of the work machine in accordance with a user's operation.

The utility model belongs to the technical field of new energy power, and discloses an electric drive system with six forward gears, which comprises a power output and transmission assembly, a first planetary reduction assembly, a first gear selection assembly, a second gear selection assembly, a third gear selection assembly and a second planetary reduction assembly. The power output and transmission assembly comprises a motor stator, a motor rotor, a first transmission shaft and a second transmission shaft, the motor stator is fixed, and the motor rotor is used for driving. The first gear selecting assembly, the second gear selecting assembly and the third gear selecting assembly comprise driving pieces, driven pieces and locking pieces, and the locking pieces are connected with the shell. The first gear selecting assembly and the second gear selecting assembly are located on the two sides of the motor stator and the motor rotor. The third gear selecting assembly is located between the first planetary speed reduction assembly and the second planetary speed reduction assembly. The electric driving system is provided with six forward gears, and the comprehensive performance of the vehicle can be further improved.

The automobile fluid silencer lamination comprises the lamination body and the turbulent energy suppression structure arranged on the lamination body, and the turbulent energy suppression structure can perform segmentation, blocking, speed reduction and frequency shift on flowing fluid, so that fluid turbulent energy suppression is realized, and the purposes of reducing noise and fluid pressure variation are achieved; the invention further provides an automobile fluid silencer, the automobile fluid silencer comprises a shell, an end pipe assembly and the automobile fluid silencer lamination, the end pipe assembly comprises a first end pipe and a second end pipe, the first end pipe and the second end pipe are arranged on the two sides of the shell respectively, and the lamination body is arranged in the shell. The automobile fluid silencer can conduct step-by-step segmentation, blocking, speed reduction and frequency shift on flowing fluid, so that fluid turbulent energy is restrained, the purposes of reducing noise and fluid pressure changes are achieved, the service life of a fluid pipeline is prolonged, the acoustic shock level of the whole automobile is improved, and the smoothness of fluid pressure transmission is improved.

The application discloses a speed reduction motor with an oil leakage prevention device and an oil leakage prevention method thereof, which comprises a motor, a shell, a gearbox, a sealed box and an output spindle, the gearbox and the sealed box are arranged in the gearbox shell of the shell, the gearbox and the sealed box are in communication with the whole oil liquid inside, the sealed box is provided with an oil leakage prevention device, the oil leakage prevention device comprises an oil pan, a rotating disc and a fixing cylinder, the output end of the gearbox and the sealed box is provided with the output spindle, and an oil seal and a bearing are arranged on the output spindle. Compared with the prior art, the oil leakage prevention device is arranged in the sealed box which is in communication with the whole oil liquid inside the gearbox, so that the separation of iron filings and impurities in the oil liquid can be realized without affecting the flow field inside the gearbox. Furthermore, the sealed box is arranged separately, so that the iron filings and impurities on the magnetic attraction device can be conveniently removed without disassembling the whole gearbox.

The invention discloses an escalator abnormal work intervention method and application thereof. According to the scheme, multi-source equipment monitoring data such as vibration, temperature, current, rotating speed, linear speed and braking torque of a power component and a moving component of an escalator are synchronously obtained through a sensor group; meanwhile, on-site use state data such as passenger flow quantity, unit step level load, left and right load unbalance degree, congestion retention state and abnormal elevator taking behavior of the escalator working site are obtained; on the basis of the data, according to the scheme, an equipment side health characterization vector and a use side state characterization vector are constructed based on methods of envelope demodulation, spectral analysis, temperature rise rate, normalization processing and the like; and through weighted linear combination, Sigmoid mapping and quantification methods, risk levels are given in real time, differential intervention strategies such as speed reduction, current limiting, direction locking, smooth speed reduction and acousto-optic prompt are automatically selected according to different risk levels, and active early warning and grading disposal of abnormal working conditions are realized.

The operation control method includes: executing travel control related to travel of the work machine; and adjusting acceleration until time at which a travel speed of the work machine reaches target speeds V1, V2 during the speed reduction of the work machine in accordance with a user's operation.

The application discloses a motor anti-reverse control method and device and electronic equipment. The method comprises the following steps: obtaining a driving control parameter of a motor, wherein the driving control parameter comprises a required torque, a gear and an actual motor speed; performing anti-reverse protection judgment based on the driving control parameter and a preset anti-reverse protection condition, determining a target anti-reverse protection strategy according to a judgment result, wherein the target anti-reverse protection strategy comprises an anti-reverse speed control strategy or an anti-reverse torque control strategy; and controlling the motor to operate according to the target anti-reverse protection strategy. The anti-reverse speed control strategy comprises the following steps: obtaining a required motor speed; determining a motor output torque value according to a speed difference PI control of the actual motor speed and the required motor speed; and determining whether to exit the anti-reverse speed control strategy and enter the anti-reverse torque control strategy according to the required torque, the gear, the actual motor speed and the required motor speed. The application realizes stable speed reduction through the combination of speed control and torque control, and improves the anti-reverse effect of the motor under different working conditions.

The invention discloses a dual-bearing positioning planetary gear type middle motor, which comprises a shell assembly, a controller assembly, a planetary speed reduction assembly and a rotor assembly, and is characterized in that all core transmission parts coaxially rotate around a main shaft to form a compact axial layout; the main shaft adopts a double-bearing positioning structure, so that the rotation stability and the positioning precision are improved. The planetary reduction assembly is a core adjusting mechanism, an outer gear ring can rotate forwards and backwards under the transmission cooperation of an adjusting motor, a worm and a worm gear ring, and then the reduction ratio is flexibly adjusted. The shell assembly and the controller assembly adopt a double-sealing structure to improve the waterproof performance, a torque sensor is arranged in the second shell, the detection end of the torque sensor is connected with a spindle spline, and intelligent adjustment of the reduction ratio is achieved in cooperation with a controller. The device has the advantages of being compact in structure, small in size, small in vibration, adjustable in reduction ratio, reliable in sealing and high in intelligent degree, can adapt to different driving working conditions of the light electric vehicle, and improves the power performance and the cruising ability.

The coaxial same-frame conjoined star wheel small-tooth-difference speed reducer comprises a box body assembly, a first-stage planetary speed reduction mechanism and a second-stage small-tooth-difference speed reduction mechanism, and the first-stage planetary speed reduction mechanism and the second-stage small-tooth-difference speed reduction mechanism are coaxially and sequentially arranged in the box body assembly; the first-stage planetary speed reducing mechanism comprises an inner gear ring A, a planet carrier A and an input gear shaft which are coaxially arranged, the inner gear ring A is fixedly arranged in the box body assembly, the planet carrier A is rotationally installed in the box body assembly, a plurality of planet gears meshed with the inner gear ring A are rotationally installed on the planet carrier A, and the input gear shaft is rotationally arranged in the planet carrier A; the transmission shaft is meshed with the planetary gear; the second-stage small-tooth-difference speed reduction mechanism comprises an inner gear ring B, an inner gear ring C, an output shaft and a planet carrier B which are coaxially arranged, the planet carrier B is rotationally installed in the position, on one side of the planet carrier A, of the box body assembly and is in transmission connection with the planet carrier A, and the planet carrier A can drive the planet carrier B to rotate at the same speed; the speed reducer is unique in structure and ingenious in design, the problems that an existing speed reducer is large in size and heavy in weight can be effectively solved, and the problems that the existing speed reducer is high in manufacturing cost, narrow in speed ratio range and large in transmission noise can also be effectively solved.

A speed reduction structure for a tape measure, comprising a tape (100), a case (200), a tape measure hub (300), and a winding member (400), wherein the tape measure hub (300) is rotatably arranged inside the case (200); the tape (100) is wound on the tape measure hub (300); the winding member (400) is arranged inside the case (200) and is connected to the tape measure hub (300); the winding member (400) is configured to drive the tape measure hub (300) to rotate and wind the tape (100). The speed reduction structure further comprises: a flywheel plate (500), wherein the flywheel plate (500) is arranged on the tape measure hub (300); and a speed reduction assembly (600), wherein the speed reduction assembly (600) is arranged inside the case (200), and when the tape measure hub (300) rotates, the flywheel plate (500) collides with the speed reduction assembly (600), and the speed reduction assembly (600) buffers and reduces the speed of the tape measure hub (300). Thus, the speed reduction structure for the tape measure has the effect of reducing potential safety hazards during use of a steel tape measure. In addition, also provided are a tape measure capable of realizing emergency-stop, speed reduction, and safe retraction, a tape measure capable of realizing friction-based speed reduction, a tape measure capable of realizing noise reduction and speed reduction, an adjustable tape measure capable of realizing centrifugal speed reduction, a tape measure capable of realizing fly-hammer-based speed reduction, and a tape measure capable of realizing stop-position speed-limiting.

The utility model relates to the technical field of irrigation auxiliary equipment, in particular to a water pipe winding vehicle which comprises a supporting frame, the supporting frame is rotationally provided with a winding frame, the winding frame is driven by a handle to rotate, and the winding frame is in transmission connection with the handle through a gear reduction assembly. The gear reduction assembly is a first-stage reduction gear set, and the handle is in transmission connection with the gear reduction assembly through a driving connection mechanism. The first-stage reduction gear set is arranged between the handle and the winding frame for transmission, speed reduction is achieved, torque is improved, and an operator can wind a water pipe easily in a labor-saving mode. The driving gears and the corresponding supports are installed together through the driving connecting rods of the cranks, the gear speed reduction sets are fixed to the supports through self-tapping screws after being assembled for overall assembly, finally, the wheel discs and the gear speed reduction sets are connected through the connecting rods, power transmission is achieved, and the structure is stable, firm and convenient to disassemble and assemble.

The application discloses an AMT transmission system, an AMT gear control method and device and electronic equipment, and relates to the field of gear control. The system comprises a front auxiliary gearbox module, a rear auxiliary gearbox module, a gear box module and an engine. The input shaft of the front auxiliary gearbox module is connected to the output shaft of the engine through a clutch. The intermediate shaft of the gear box module is meshed with the input shaft of the front auxiliary gearbox module. The second shaft of the gear box module is connected to the intermediate shaft of the gear box module. The second shaft of the gear box module is meshed with the drive shaft of the rear auxiliary gearbox module. The drive shaft of the rear auxiliary gearbox module is connected to the rear axle of the vehicle and drives the wheels. Through the above scheme, the input shaft of the front auxiliary gearbox enters a free speed reduction state, the speed difference between the speed of the gear to be engaged and the speed of the second shaft is obtained, the window allowing gear shifting is captured, and gear shifting is realized without depending on the data of the intermediate shaft sensor.