A roller structure that is easy to adjust

Abstract

The invention provides a roller structure convenient to adjust, which comprises an upper frame, a lower frame and a roller body, wherein two groups of upward concave mounting grooves are parallely formed in the lower surface of the upper frame; a downward concave first clamping groove and a downward concave second clamping groove that are corresponding to the mounting grooves are parallely formed in the upper surface of the lower frame respectively; the second clamping groove is higher 0.2-5 mm than the first clamping groove; the roller body comprises two groups of single roller bodies; each group of single roller bodies comprises mandrels and rollers arranged on the mandrels; the single roller bodies are arranged between the upper frame and the lower frame; one mandrel is arranged in a cavity formed by the mounting grooves and the first clamping groove; the other mandrel is arranged in a cavity formed by the mounting groove and the second clamping groove. The integral roller structure is simple, the mandrels in the roller body are respectively mounted; the second clamping groove is higher than the first clamping groove; when being assembled, the roller body can be quickly positioned; the heights of the rollers after positioning are fixed permanently, so that the real requirement is met.

Description

technical field [0001] The invention relates to the technical field of railway turnout devices, in particular to an easily adjustable roller structure. Background technique [0002] The roller structure of the existing railway turnout adopts the eccentric design of the eccentric shaft. By adjusting the rotation position of the eccentric shaft, the adjustment of the height difference of the top surface of the roller is realized. Since the mandrel structure is designed eccentrically, it has the following disadvantages: (1) Manufacturing The process is difficult and the production cost is high; (2) The installation and debugging are more complicated and inconvenient to use; (3) Under harsh working conditions, the pressure of the fixing bolts will decrease, the eccentric value of the mandrel will change, and the front and rear wheels and sliding The height difference between the table tops of the bed changes accordingly, which will affect the normal work of the roller device. ...

AI Technical Summary

Problems solved by technology

[0002] The roller structure of the existing railway turnout adopts the eccentric design of the eccentric shaft. By adjusting the rotation position of the eccentric shaft, the adjustment of the height difference of the top surface of the roller is realized. Since the mandrel structure is designed eccentrically, it has the following disadvantages: (1) Manufacturing The process is difficult and the production cost is high; (2) The installation and debugging are more complicated and inconvenient to use; (3) Under harsh working conditions, the pressure of the fixing bolts will decrease, the eccentric value of the mandrel will change, and the front and rear wheels and sliding The height difference between the table tops of the bed will change accordingly, which will affect the normal operation of the roller device

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