Based on coaxial steering and stepless variable speed kinetic energy recovery device is a new type of kinetic energy recovery products, mainly for the field of transportation, can greatly save the energy waste of the original machine, to meet the vehicle suppliers such as elevator manufacturers to save money and improve the safety of machine operation needs. The main advantage of this product is the advanced and feasible technology. Through the linkage of the stepless transmission device, the variable gear and the energy storage device, the machine brakes and stores most of the kinetic energy and then releases it when necessary. The application process of this product takes the elevator as an example. The blocking kinetic energy recovery device is installed inside the elevator as one of the detachable parts of the elevator. The CVT stepless speed change mechanism is connected in series with the DC generator to generate electricity and store it in the storage battery. The elevator uses the constant speed rotation of the main shaft to provide torque to the energy recovery device. At the same time, the energy recovery device provides resistance to the elevator, so that the car that the car originally meets the speed requirements is balanced and the load and the burden of the motor is reduced, recycling the energy originally consumed by the motor. Principle and structure description (1) Electrical control There are three aspects of electrical control, electromagnetic locking control, hydraulic pump control and charging circuit, elevator quality information and work plan to pass to the microcontroller, the microcontroller through the comparison of information to make the work of the three control. When the elevator does not meet the energy recovery conditions at this time (energy recovery conditions: the car and the party with the larger counterweight move downward), the device does not work, otherwise the single-chip microcomputer controls the electromagnetic locking mechanism to jam the gear connected to the elevator spindle to drive The device rotates and the device works. At the same time, the single chip microcomputer should control the work of the hydraulic pump according to the quality difference between the car and the counterweight and the motion plan for a period of time in the future, so that the stepless speed change mechanism works. At the same time, the work plan of the stepless speed change mechanism makes the resistance generated by the whole device to the elevator should approximately offset the quality difference between the car and the counterweight. In order to make the generator rotate, the DC generator is connected in series with the continuously variable transmission mechanism. Because of this, the device provides constant resistance to the elevator while the speed of the generator will continue to increase, and the generated current and voltage will continue to increase. In order to make the power generated by the generator not exceed the rated value, the excitation current can be adjusted to adjust the output voltage. (2) Mechanical part ① Clutch mechanism Realize the function of whether the torque is input to the kinetic energy recovery device. The jaw type is suitable for low-speed and high-torque occasions, and the friction type is suitable for high-speed occasions. ② Coaxial direction change mechanism The direction of rotation of the main shaft of the elevator is different during the descent and ascent. The voltage direction of the DC generator is related to the direction of rotation of the rotating shaft. In order to facilitate the charging of the battery, the coaxial reverse mechanism and its series gear mechanism can realize the following operations: regardless of the direction of movement of the main shaft of the elevator, the direction of rotation of the generator can be unchanged ③ Continuously variable transmission mechanism In order to maximize the recovery of the elevator energy, so that the elevator does not need to work or reduce the output power when the energy recovery conditions are met, and in order to make the generator meet the speed requirements, this device adopts a hydraulic continuously variable transmission mechanism to achieve the above effects