Constant proportional variable speed collective transmission device

Abstract

Disclosed is a constant-proportion variable-speed gathering transmission device. Friction pairs are gathered and arranged on one rotary shaft so as to accumulate transmission force and realize high-power variable-speed transmission. Planetary gears (6) are flattened to be gathered on mandrels (5) through inner hole slide bushings, the mandrels (5) and sliders (18) are connected, and the sliders (18) are mounted in slide grooves of a rotary disc (19) and provided with threaded teeth meshed with radial screws of a bevel gear (17). When an outer gear (15) fixedly connected with a small bevel gear (16) is shifted by bolts (10 and 11), self-speed-regulation transmission is achieved, and an output mechanism achieves a constant-proportion lifting speed each turn. By utilizing inner and outer bidirectional disc springs (4 and 22) to press a driving gear (3) and an outer press ring (7) respectively, increase and decrease of the pressing force is identical with that of rotation speed and torque, and constant-power transmission is realized. In addition, speed regulation and displacement of the planetary gears is completed by radial screw transmission, operation is easy and labor saving. Circumferential operation of the planetary gears (3) definitely generates centrifugal force and no longer generates adverse affection on pressurizing characteristics and a breakthrough is made in high rotation speed input.

Description

technical field [0001] A constant-proportion variable-speed collective transmission device, the output speed increases and decreases at a constant ratio, which is suitable for winding transmission with constant linear speed; a group of friction pairs are collectively arranged to transmit force together, realizing high-power transmission; the internal and external two-way pressure mechanism achieves constant power The transmission torque and friction force always change in direct proportion, which greatly improves the efficiency and carrying capacity; the centrifugal force generated by the circular operation of the planetary wheel is transferred so that the input high speed is not limited. Background technique [0002] For variable speed transmission, especially for winding transmission with constant linear speed, the speed of constant linear speed should gradually decrease with the gradual increase of the diameter of the reel, and the rotational speed should be reduced for ea...

AI Technical Summary

Problems solved by technology

[0003] Friction transmission relies on pressing force to form friction, and the contact stress between transmission pairs limits high-power transmission.

Each contact force transmission point can only bear the allowable contact stress, so the pressurization characteristics affect the improvement of efficiency

The increase of the constant power transmission torque requires a synchronous increase of the pressing force, but usually the structure is difficult to achieve the consistency of increase and decrease, or even contradictory. For example, the high speed of the German invention patent DISO has the largest pressing force, serious heat and wear. Reduced service life

In addition, the centrifugal force is proportional to the square value of the angular velocity, and the additional effect forms a high pressing force, while the pressing force required for a high speed is small. This contradiction limits the input of a high speed. So far, it has been difficult to make a high-power stepless transmission of the friction pair. , constant power, high efficiency, long life products

[0004] The radial displacement of the planetary gear of the planetary transmission causes the increase or decrease of the working radius. Usually, a huge axial extrusion force is used to force the planetary gear to make a radial displacement, and the control torque is too large, which increases the kinetic energy consumption.

[0005] The car transmission adopts the continuously variable transmission, which has the best matching performance, but the load capacity and efficiency of the continuously variable transmission are too low, which affects the application of the vehicle transmission.

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