Mechanical stepless speed gear with equal angular speed and shape-position and high gear ratio

Abstract

A constant angular speed and synchro-positioning mechanical stepless gear with low paired and high gearing ratio is designed as infinitely gear with equally regular characteristics on theories of constant angular speed and synchro-positioning movement and constant angular speed and iso-directional and reversal speed regulation so as to dissolve the vital problem of traditional impulsive stepless gear. No weakness in the whole driving chain has equal bearing capacity and high load and shock resistance. The spatial structural series is flexible and can have driving shaft in all the directions. Its advantages include reasonable structure, easy operation, accurate and stability, and economical efficiency. Its main gearing system works at low-paired transmission, with high loading ability and outputs torque at low speed.

Description

technical field [0001] The invention belongs to the technical field of mechanical stepless transmission design and manufacture. Background technique [0002] Continuously variable transmission is a transmission device that can continuously and continuously change the transmission ratio. It has a wide range of applications and is especially suitable for: (1) machines with variable process parameters; (2) machines that require continuous changes in speed; (3) (4) Coordinating the operating speed among several operating units in the transmission system of several or one equipment; (5) Slow start: For machines with large inertia or starting with load, use this After the continuously variable transmission, it can start with high torque at near zero speed, and continuously change the speed to reach the rated speed under load, avoiding excessive inertial load, so that a prime mover with less power can be used. [0003] For mechanical continuously variable transmissions, a large nu...

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Problems solved by technology

[0003] For mechanical continuously variable transmissions, a large number of friction transmissions are used, which generally have the following defects: 1. It is difficult to obtain ultra-low speed output, and the speed range is relatively narrow; 2. There are defects such as small transmission torque and low transmission power; 3. Carrying capacity Low, poor overload resistance and impact resistance; 4. High requirements for parts processing and lubrication, short life, complex structure and process, high manufacturing cost; 5. Large sliding rate, low mechanical efficiency; some still have pulsating output and power flow discontinuities

However: the current pulsating continuously variable transmission has several fatal weaknesses, which restrict its development in a wider field: 1. The pulsation of the output makes it impossible to be used in occasions that require high output uniformity. And the auxiliary of the overrunning clutch cooperates with the optional flow filter to reduce the pulsation, and because of the inertia factor of the entire operating system and the overrunning effect of the overrunning clutch, the pulsation at the output end will be significantly smaller than the theoretical value, but this is only an appearance phenomenon, the actual The power flow transmission is still output in the form of pulse intervals according to the theoretical value. The discontinuity of this power flow is a major factor causing the low efficiency of the pulsating continuously variable transmission; The vibration caused by the unbalanced inertial force and inertial moment will be obviously intensified at high speed, and the dynamic load generated by it is still an important reason for the low mechanical efficiency; 3. The overrunning clutch as the output mechanism is the only one in the whole body. The friction transmission components also have a series of corresponding defects of friction transmission. They are the weak link in the power chain of the whole mechanism. Aspects of development

4. The multi-phase structure set up to reduce the pulsation will cause too many repeated constraints in the system, which will cause the machine to be sensitive to errors and working environments, reduce efficiency, increase dynamic load, and increase the number of phases. , The debugging and installation process is complicated, the failure rate increases, and the cost increases

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