98results about How to "Improve escape performance" patented technology

The invention relates to an all-cross-section cutting rectangular pipe-pushing machine cutting mechanism used in rectangular pipe-pushing devices used in non-excavation engineering. The mechanism comprises an installing seat, four cutterheads with cutting surfaces located on the same plane are installed on the front end face of the installing seat, centers of rotating shafts of the four cutterheads are respectively located on four vertexes of a square and are driven by an identical spindle located at the center of the installing seat to synchronously rotate at a uniform speed, the end face contour of every cutterhead is a long shape with the dimension in the length direction larger than the dimension in the width direction, cutting blades are arranged on the edge of the cutterheads, the length direction of every cutterhead is perpendicular to the length direction of the cutterheads adjacent to the cutterhead, the maximum cutting radius of every cutterhead and the maximum cutting radius of the adjacent cutterhead have an overlapped part, and the four cutterheads do not interfere with each other when rotating synchronously at the uniform speed. Rectangular all-cross-section cutting can be achieved, the all-cross-section cutting rectangular pipe-pushing machine cutting mechanism is high in difficulty overcoming capability, simple in structure and high in reliability, the technical requirements for constructors are low, and soil mass is mixed fully.

The invention relates to an alternating current transmission system, in particular to a vehicle alternating current transmission system, and solves the defects and the problems of a transmission way of an existing heavy track car. The system comprises a traction system and an auxiliary system, wherein the traction system consists of a first traction system and a second traction system; the first traction system and the second traction system have the same structure and independently comprise a diesel engine, a permanent magnet synchronous generator, a four-quadrant traction rectifier, a traction inverter and an asynchronous traction machine; the auxiliary system comprises an auxiliary system direct current bus which is connected with an auxiliary inverter; the direct current bus of the rectifier of the first traction system is connected with the auxiliary system direct current bus through a first DC/ DC converter and a first fling-cut switch; and the direct current bus of the rectifierof the second traction system is connected with the auxiliary system direct current bus through a second DC/ DC converter and a second fling-cut switch. The alternating current transmission system isespecially suitable for a GCD-1000II heavy track car and is also suitable for other vehicles.

The invention discloses a self-moving device escaping method which comprises the steps that a self-moving device is driven to move forwards; whether the self-moving device can continue moving forwardor not is determined; if the self-moving device cannot continue moving forwards, the self-moving device is controlled to perform a first escaping pre-processing operation; if the self-moving device cannot continue moving forwards after performing the first escaping pre-processing operation, the self-moving device performs a second escaping pre-processing operation; the self-moving device is drivento retreat; whether the self-moving device can successfully retreat or not is determined; if the self-moving device can successfully retreat, the self-moving device is controlled to perform a third escaping pre-processing operation; and if the self-moving device cannot successfully retreat, the self-moving device is controlled to perform a fourth escaping pre-processing operation. According to the scheme, the self-moving device is enabled to perform the escaping operation to be away from a trapped point in time when being stuck by an object or trapped during the moving process, the escaping performance of the self-moving device is increased, the efficiency of the self-moving device is improved, and the product use experience is improved.

The invention discloses an auxiliary driving system and a vehicle. According to the embodiment of the invention, the auxiliary driving system is constructed on the basis of a parallelogram mechanism, the rack part and a framework opposite to the rack part of the of the parallelogram mechanism can keep parallel all the time, so that bearing of a supporting framework is distributed relatively evenly in the front and back directions and not affected by opening stroke. When in the opening state, the auxiliary driving system is used for extricating of the vehicle or auxiliary driving under a certain road condition; and when in a folded state, greater influence on traversability of the vehicle is reduced, so that the auxiliary driving system can be always prepared on the vehicle, and the situation that the auxiliary driving system is mounted only when the vehicle is caught in a sandy land and the like is not needed. The auxiliary driving system can effectively increase the friction area and friction ability, so that the auxiliary driving system is used for improving the extricating ability.

The invention provides an intelligent four-wheel drive control method and system and a vehicle. The intelligent four-wheel drive control method comprises the following steps: acquiring vehicle condition information of a vehicle; calculating an output torque calculation value of the vehicle; with combination of front wheel speed, rear wheel speed and output torque calculation values, calculating the temperature of the friction plate of the vehicle; and finally, correcting the output torque calculation value according to the temperature of the friction plate to obtain an actual output torque, and controlling a friction clutch of the vehicle to output the actual output torque. According to the intelligent four-wheel drive control method, the temperature of the friction plate is directly obtained according to the real-time vehicle condition information, and the accuracy is higher; meanwhile, the output torque calculation value is corrected through the temperature of the friction plate, thecontrol accuracy of the output torque is improved, then the controllability and the escape capacity of the whole vehicle are improved, and the probability that the friction plate is ablated and damaged is reduced.

The invention discloses an all-dimensional wheeled mobile robot chassis. The chassis comprises wheels, a suspension unit, a transmission unit, a driving unit, a chassis frame and a power unit. Mecanumwheels are adopted as the wheels of a robot, compared with other wheels, the Mecanum wheels can achieve pivot steering, translation and pozidriv walking, and the turning radius of the robot is greatly reduced, so that the robot is more flexible and passes through the narrow and small space conveniently; each wheel is provided with an independent driving motor, and a 57 stepping motor and a speedreducer are adopted, so that the robot is high in displacement precision and has point fixing and positioning effects; the mobile robot bears a heavy load, can bear a weight of 100 kg and is high in slope climbing capacity and driving force; each wheel is provided with an independent damping unit, the wheels cannot influence one another on the uneven ground, so that the robot keeps stable, the damping effect is improved, and accordingly the capacity of getting rid of the difficulty is improved.

The invention relates to an electronic differential for an electric vehicle. The electronic differential is used for the double-motor rear drive electric vehicle and comprises a vehicle controller andfurther comprises left and right driving wheel rotating speed controllers, a steering wheel rotation angle sensor, left and right driving wheel rotating speed sensors and an accelerator pedal sensorwhich are connected with the vehicle controller. The vehicle controller comprises a braking judging module used for judging whether the electric vehicle is in a braking state or not, a turning judgingmodule used for judging whether the electric vehicle is in a turning state or not, a differential control module with a preset speed equation model, and a vehicle speed sensor breakdown judging module used for judging whether a vehicle speed sensor breaks down or not. Data collected by all the sensors are input into the vehicle controller and calculated by the speed equation model, and then the rotating speeds of a left driving wheel and a right driving wheel are distributed by the left and right driving wheel rotating speed controllers. According to the electronic differential, the capability of the vehicle for getting out of trap is promoted by a large margin, the number of parts of a transmission system is decreased, and the transmission efficiency of the vehicle is improved.

The invention relates to a cross-country forklift and discloses a hydraulic four-wheel-drive cross-country forklift. The hydraulic four-wheel-drive cross-country forklift comprises an axle body assembly (1). The axle body assembly comprises a front axle body assembly body and a rear axle body assembly body. Both the front axle body assembly body and the rear axle body assembly body are provided with main speed reducers (2) which comprise the front main speed reducer and the rear main speed reducer. A left axle shaft assembly and a right axle shaft assembly (41 and 42) which are connected with a left wheel hub and a right wheel hub (31 and 32) correspondingly are arranged on the two sides of the axle body assembly correspondingly. The hydraulic four-wheel-drive cross-country forklift is characterized in that the forklift further comprises a power gear shifting gearbox provided with a front output shaft and a rear output shaft; the power gear shifting gearbox is connected with the front main speed reducer and the rear main speed reducer through the front output shaft and the rear output shaft correspondingly; both the front main speed reducer and the rear main speed reducer are internally provided with differential locks (5); the differential locks (5) are connected with the left axle shaft assembly and the right axle shaft assembly (41 and 42) through splines. The hydraulic four-wheel-drive cross-country forklift is large in traction at a low speed, fast in acceleration, large in transmission torque, high in difficulty-relief capacity, capable of achieving independent distribution of torque and the rotation speed at the same time, large in transmission torque and stable in locking performance.

The invention provides a shield tunnel heading machine. The shield tunnel heading machine comprises a cylindrical shield shell, a cutter head, a first driving mechanism and a second driving mechanism; the cutter head is arranged at the front end of the shield shell; the first driving mechanism is rotatably connected with the shield shell; the second driving mechanism is connected with the first driving mechanism; the first driving mechanism comprises a rotating shaft; one end of the rotating shaft is connected with the cutter head; the first driving mechanism is used for driving the cutter head to rotate; and the second driving mechanism is used for driving the first driving mechanism to swing so as to drive the cutter head to swing. After the cutter head swings, pressure of space between cutters at the edge of the cutter head and a stope face of a tunnel can be relieved, a technicist changes the cutters conveniently, labor intensity is reduced, and cutter changing efficiency is improved. In addition, when the edge of the cutter head is jammed by hard substances (such as rock), the cutter head can be released from the hard substances by swinging, and releasing capability of the shield tunnel heading machine is further improved.

The invention discloses a foldable all-terrain bicycle including a frame, wheels mounted on the frame, a seat, a handle, pedals, a wheel drive transmission system, and a wheel differential system, theframe includes a frame rail, a frame rail and a wheel support frame, and the frame rail, the frame rail, the frame rail and the wheel support are connected by a frame hinge. The handle and a seat aremount on that cross bar of the frame, a wheel comprises a hub, a tire plate unit and a tire drive shaft, the wheel drive transmission system comprises a center drive mechanism, a front wheel drive mechanism and a rear wheel drive mechanism, a wheel differential system comprises a differential and a differential locking mechanism, and a differential comprises a differential housing, a differentialdrive shaft, a differential drive shaft and a drive gear set. The invention is convenient to disassemble, assemble and fold, convenient to travel and carry, stable to ride, good in shock absorbing effect, capable of passing through various bad road conditions and switching between different road conditions, good in safety and reliability, and wide in application range.

The invention provides an escape device and an underwater robot. The escape device comprises an escape tray and an air bag. The escape tray is arranged on a driving shaft on the outer side of a buoyancy tank and rotates along with the driving shaft. The escape tray is provided with a convex outer wall protruding outwards, the air bag is arranged between the escape tray and the buoyancy tank, and an opening is arranged on the convex outer wall. When the air bag is inflated, a bag body of the air bag fills the inside of the escape tray and protrudes outwardly from the opening in the convex outerwall. The escape performance is improved by assembling the escape tray at the front end of the buoyancy tank which is most prone to being trapped and sunk, namely at the position where the driving shaft is arranged.

The invention discloses a dual-motor driving system assembly and a vehicle. The dual-motor driving system assembly comprises a first motor and a second motor which are coaxially arranged, a first gear transmission, a second gear transmission and a plurality of idle wheel pairs, the first gear transmission is driven by the first motor, the second gear transmission is driven by the second motor, and the idler wheel pairs are arranged in the first gear transmission and the second gear transmission respectively and used for increasing the distance between an output shaft of the first motor and a tail end shaft of the first gear transmission. According to the scheme, due to the fact that the idle wheels are additionally arranged, the center distance between the input shaft and the output shaft in the assembly can be adjusted more flexibly by adjusting the size of the idle wheels, large-center-distance design is achieved, structural space brought by the large center distance is fully utilized for installing other components, and adjustment can be conducted according to space arrangement requirements and performance requirements of different clients.

The invention discloses a coaxial electric drive axle with a differential lock, which enables a motor to transmit power of the motor to a differential mechanism through a planetary reducer and transmit the power to wheels on two sides. The drive axle is characterized in that the drive axle motor is fixed with a sun gear of the planetary reducer through a spline, power is transmitted to the planetary reducer and then transmitted to the differential mechanism, and the differential mechanism outputs the power to wheels at the two ends through half shafts; a differential lock and a planet carrier are both provided with end face teeth, the differential lock is inserted into a half axle wheel carrier, when a vehicle runs normally, an electromagnetic controller attracts the differential lock to be recovered, and the differential lock is separated from the end face teeth of the planet carrier; when a vehicle slips, the differential lock end face teeth are combined with the planet carrier end face teeth, the planet carrier and the differential lock are fixed into a whole, then the planet carrier and the half axle wheel carrier are combined into a whole, the differential mechanism is locked, and power is evenly output to the two sides.

According to the movement control method of the cleaning machine, the cleaning machine comprises a machine body, the machine body is provided with two pieces of mop cloth distributed in a parallel structure, and the mop cloth is arranged to be of a structure capable of being attached to the ground to horizontally rotate; the two mops are controlled to horizontally rotate to serve as a power source to drive the cleaning machine to move on the ground to execute a cleaning mode; in the cleaning mode, if it is detected that the posture of the cleaning machine is inclined in the state that the horizontal rotating speed of the two mops is not reduced and the horizontal rotating direction of the two mops is not changed, and the inclination angle F is larger than or equal to E degrees, the posture of the cleaning machine is controlled and adjusted so that the cleaning machine can be separated from the current position. According to the scheme, the problem that an existing cleaning machine cannot timely and effectively escape or bypass obstacles in the process of moving on the ground is solved.

The invention discloses a power transmission system and a vehicle. The power transmission system comprises a system power output part, a power source, a variable speed unit, a first motor generator unit and a mode conversion device, wherein the power source and the system power output part are in selective power coupling connection; the variable speed unit is selectively connected with the power source and connected with the system power output part; the first motor generator unit comprises a first motor generator and a unit coupling part, the unit coupling part is connected with the system power output part, and the first motor generator is selectively connected with the unit coupling part; and the mode conversion device is used for selectively connecting the variable speed unit with theunit coupling part and is in power coupling connection with the variable speed unit and the unit coupling part, so that power from the power source sequentially passes through the variable speed unitand the mode conversion device to be secondarily decelerated and then is output to the unit coupling part. Therefore, drive modes of the vehicle can be enriched, and the vehicle can adapt to differentroad conditions.