Locking mechanism of rotating piece and steel rail grinding device containing same

Abstract

The invention relates to the technical field of locking mechanisms, and discloses a locking mechanism of a rotating piece. A fixed locking cylinder is coaxially penetrated outside the rotating piece,and an annular gap is formed between the inner wall of the locking cylinder and the outer circumferential surface of the rotating piece; the annular gap is internally provided with a tooth disc groupwhich is meshed and connected under the action of a pretightening force; the tooth disc group comprises a movable tooth disc which can move in the annular gap, wherein an avoidance hole is formed in the middle part of the movable tooth disc and is slidably penetrated on the rotating piece, and a fixed tooth disc fixedly sleeving on the rotating piece, and the movable tooth disc and the fixed toothdisc are connected through end face teeth; and the outer circumferential surface of the movable tooth disc is connected with the inner wall of the locking cylinder by a key which limits the rotationof the movable tooth disc. The invention also discloses a rail grinding device containing the locking mechanism, wherein a grinding fixing frame is fixedly connected to the rotating piece, and a plurality of grinding units arranged in rows are fixedly arranged on the periphery of the grinding fixing frame. The locking mechanism of the rotating piece applies a continuous acting force when the end face teeth are meshed to press the meshing part, and lock the rotating piece to prevent the rotating part from rotating freely.

Description

technical field [0001] The invention relates to the technical field of locking mechanisms, in particular to a locking mechanism of a rotating part and a rail grinding device containing the locking mechanism. Background technique [0002] The commonly used rotation locking methods for rotating parts (rotating shafts) mainly include the following types: [0003] 1. The motor with brake locks the rotating parts. [0004] 2. Lock the rotating parts axially or radially with pins. [0005] 3. Self-locking through friction angle to achieve locking effect, such as worm gear-worm connection, locking the worm. [0006] The above rotation lock methods have some disadvantages: [0007] 1. Conventional deadlock is generally used in a relatively static environment, so there will be no major problems. However, the conventional locking method is applied in a special environment, for example, when it is applied in the railway industry, because there is a long-term and a large amount of v...

AI Technical Summary

Problems solved by technology

However, the conventional locking method is applied in a special environment, for example, when it is applied in the railway industry, due to the long-term and large amount of vibration during the operation of the vehicle, it is easy to cause the locking failure

[0008] 2. The redundancy is not high. Once a set of locking methods fails, the overall locking will fail

As in Scheme 2, although multiple sets of locking mechanisms can be arranged (multiple sets of pins are fixedly installed on the circumference of the rotating part), due to the limited space of the mechanism, the number of locking mechanisms is small, and it will also increase the complexity of the overall mechanism. Daily maintenance It is more inconvenient, and correspondingly increases the cost of use

[0009] 3. Option 1 and Option 3 rely on friction locking. The disadvantage is that when it is applied in an environment with a large amount of vibration, the locking mechanism may be slightly shifted, which will cause the locking to fail.

In addition, in Scheme 2, the pins are used to lock the rotating parts axially or radially. At this time, the pins are subjected to shear force. Under a large amount of vibration environment, the pins and pin holes will be squeezed or even torn, causing the pins and pin holes to be damaged. The gap between the mating surfaces increases, and the lock fails

Images