Output shaft mechanism of speed increasing device of circulation type positive and negative turning variable-speed vacuum compressor

Abstract

The invention belongs to a vacuum compressor, and relates to an output shaft mechanism of a speed increasing device of a circulation type positive and negative turning variable-speed vacuum compressor. The output shaft mechanism is characterized in that a hollow turning wheel C is arranged on a turning main shaft between a turning gear B and a bearing, and a buffer assembly is arranged in a hollow cavity of the turning wheel C and is composed of an upper buffer spring, an upper gland, a buffer body, a lower gland and a lower buffer spring, which are sequentially arranged on a shaft segment above steps of the turning main shaft; the buffer body is in a cylinder shape with a fan lug on one side, and the upper end face and the lower end face of the buffer body are respectively connected onto the upper gland and the lower gland through bolts; the stable rotation of the turning main shaft is realized through the buffer action of the upper buffer spring, the lower buffer spring and the buffer body. The speed increasing device has the characteristics of reasonable design, compact structure, good buffer action, stable and reliable transmission performance and the like, and improvement on the vacuumizing and compressing efficiency of the vacuum compressor.

Description

technical field [0001] The invention belongs to vacuum compressors, in particular to an output shaft mechanism of a cycle-type positive and negative variable-speed vacuum compressor speed-increasing device. Background technique [0002] At present, in mechanical products, such as mechanical transmission devices of reciprocating vacuum pumps and reciprocating compressors, most of its structures adopt motors, belt transmissions to drive crankshafts and eccentric wheel-type transmission mechanisms. The reciprocating motion is realized by using the slider and the connecting rod to cooperate to push the piston. Due to the restriction of the above-mentioned transmission mode, the distribution form of the cylinder body can only be V-shaped, fan-shaped or parallel twin-cylinder type. Due to the periodic inflection point or dead point in the transmission of the crankshaft and the eccentric wheel—that is, the dead point where the output torque is "0"; the transmission will inevitably ...

AI Technical Summary

Problems solved by technology

Although the screw reciprocating vacuum compressor has improved compared with the structure of the above-mentioned reciprocating vacuum pump and the reciprocating compressor, there are still some shortcomings and deficiencies in its transmission device. It is easy to disengage and its transmission device cannot work normally under high-speed conditions, which restricts the efficiency of the vacuuming and compression functions of the vacuum compressor; The forward and reverse variable speed vacuum compressor is a circular forward and reverse variable speed vacuum compressor. The variable-speed transmission device includes a reduction device, a forward and reverse gear synchronous drive assembly, a forward and reverse direction changing device and a speed-up device, wherein the speed-up device includes an output shaft mechanism and a speed-up transmission mechanism; the direction-changing spindle mechanism includes a steering box, a Reversing main shaft, A reversing gear, bearing, C reversing gear, D reversing gear, B reversing gear, commutator, buffer assembly and reversing transmission assembly

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