Self-adaptive anti-slip double-roller structure for wheel rail type rotary table

Abstract

The invention discloses a self-adaptive anti-slip double-roller structure for a wheel rail type rotary table. The self-adaptive anti-slip double-roller structure mainly comprises a driving wheel assembly and a driven wheel assembly, and the driving wheel assembly comprises a driving rotating shaft and a driving roller arranged on the driving rotating shaft. One end of the driving rotating shaft isconnected with a servo driving assembly, and the other end of the driving rotating shaft is connected with a first encoder assembly; the driven wheel assembly comprises a driven rotating shaft and adriven roller arranged on the driven rotating shaft, and any end of the driven rotating shaft is connected with a second encoder assembly; the first encoder assembly and the second encoder assembly are arranged in the driving wheel assembly and the driven wheel assembly correspondingly and are matched to conduct closed-loop control over the driving roller, and the rotating precision is improved. The feedback value of the first encoder can be compared by referring to the feedback value of the second encoder, so that the slipping condition of the driving roller can be monitored in real time, thedriving torque of the driving wheel can be adjusted in time by matching with a full-closed-loop servo control system, and the slipping condition of the driving wheel can be avoided to the maximum extent.

Description

technical field [0001] The invention belongs to the technical field of large-scale wheel-rail turntables, and relates to an adaptive anti-slip double-roller structure for wheel-rail turntables. Background technique [0002] When the turning radius of the turntable is large, it is an inevitable choice to use the wheel-rail drive method. At this time, the friction between the roller and the rail surface is used as the driving force to push the turntable and the load to rotate. It is usually necessary to comprehensively consider factors such as the structural layout of the turntable, the way of force transmission, the ability to resist overturning, the bearing pressure of the rollers, the uniformity of bearing pressure, the driving capacity, and the smooth operation, and reasonably distribute multiple groups of rollers along the circumference of the track to jointly complete the bearing and driving. Turntable and load tasks. This structural form of turntable has been continuou...

AI Technical Summary

Problems solved by technology

Due to the large load and moment of inertia of the large turntable, the metal friction contact between the roller and the track is generally in the form of slippage, which not only accelerates the consumption of the roller and track, but also reduces the kinematic performance of the turntable

In addition, in order to meet the motion and static requirements of the turntable, it is often necessary to design different modular structures, such as driving wheel sets, driven wheel sets, and rail holding components, which greatly increases the complexity of the system and increases the design cost.

Moreover, due to the large rotation radius of the turntable, it is very difficult to adjust the direction of the rotation center of each wheel set to the center. Poor pointing accuracy of the wheel set will lead to uneven force on each wheel set and increased wear

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