Cylindrical roller thrust bearing having integrated speed change function for small load

Abstract

The invention relates to a cylindrical roller thrust bearing having an integrated speed change function for a small load. The cylindrical roller thrust bearing is mainly used for adjusting the speed distribution condition of a mechanism operating in a period under the condition of the small load. The device comprises a shaft ring, a base ring, a rolling body, a holder, magnetorheological fluid, an electromagnetic coil, a separation ring, a piezoelectric ceramic and an insulation body. Two annular grooves are formed in the upper surface of the base ring; one annular groove is wound with the electromagnetic coil, and the other one is provided with the piezoelectric ceramic; the base ring and the piezoelectric ceramic are isolated by the insulation body; the shaft ring, the base ring and the separation ring are formed to a sealing cavity; the magnetorheological fluid is sealed in the sealing cavity, and is separated from the electromagnetic coil by the separation ring; a non-annular small boss is arranged on the lower surface of the shaft ring; the installation enables the small boss to periodically move in the annular groove provided with the piezoelectric ceramic; and a channel is formed between the electromagnetic coil and the piezoelectric ceramic for conducting the positive and negative poles of the piezoelectric ceramic with the two ends of the electromagnetic coil.

Description

technical field [0001] The present invention relates to a thrust cylindrical roller bearing, and more particularly to a thrust cylindrical roller bearing with an integrated speed change function for small loads. Background technique [0002] With the continuous advancement of science and technology, the efficiency of mechanical equipment has become a hot topic in the industry. Especially in many small and medium-sized enterprises that focus on production, the concept of quantity is very important. In this case, they have invested a certain amount of time. The cost is used to improve the operating efficiency of the machine. However, the internal structure of some improved machines is more complicated, or various hydraulic and pneumatic systems are added externally for speed regulation. If there is a set of devices, without changing the original mechanical structure of the machine or adding an external speed-adjusting hydraulic or pneumatic system, only one part inside the mac...

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Problems solved by technology

[0002] With the continuous advancement of science and technology, the efficiency of mechanical equipment has become a hot topic in the industry. Especially in many small and medium-sized enterprises that focus on production, the concept of quantity is very important. In this case, they have invested a certain amount of time. The cost is used to improve the operating efficiency of the machine. However, some improved machines have more complicated internal structures, or various external hydraulic and pneumatic systems for speed regulation.

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