Direct Drive Primary Structures for Roller Mills

Abstract

The invention discloses a direct-drive main structure used for a roller mill. The direct-drive main structure comprises a tool apron seat disc, a grinding ring, a grinding roller and a power input shaft, wherein the grinding ring is fixedly arranged on a machine base of the roller mill around the tool apron seat disc, the grinding roller is in rolling fit with the inner ring surface of the grinding ring, the power input shaft is vertically and fixedly arranged at the middle part of the lower disc surface of the tool apron seat disc or is in transmission connection with the lower disc surface of the tool apron seat disc through a transmission part, and the grinding roller is arranged on the upper disc surface of the tool apron seat disc through a transmission mechanism. The direct-drive main structure has the advantages that the power input shaft is vertically and fixedly arranged at the middle part of the lower disc surface of the tool apron seat disc or is in transmission connection with the lower disc surface of the tool apron seat disc through the transmission part, so that the space occupied by a supporting shaft sleeve B and a power input shaft C in the prior art is saved, and accordingly, the effective volume of the roller mill is expanded under the same grinding ring diameter condition, in such a way, the diameter of the grinding roller is made larger and the height of the grinding roller is made greater, therefore the goal of improving the rolling compaction force, the rotational inertia and the rated output of the grinding roller is achieved, and the rigidity and the operation stability of a system are also improved.

Description

technical field [0001] The present invention relates to a main structure of a roller mill, in particular to a direct-drive main structure for a roller mill. Background technique [0002] At present, the main structure of the existing vertical roller mill is as follows Picture 1-1 , Figure 1-2 , Figure 2-1 , Figure 2-2 As shown, it includes the blade base plate A, the support sleeve B fixed vertically upward at the center of the blade base plate A, the power input shaft C that runs through the blade base plate A and the support sleeve B from bottom to top, and is horizontal The hanger D fixed on the top of the power input shaft C and the support bushing B, the grinding ring E fixed on the frame around the shovel plate A, and the grinding roller assembly F rolling with the inner ring surface of the grinding ring E are composed. The grinding roller assembly F is fixedly connected to the hanger D through the swing bar G, and there are two connection forms. Figure 1 shows ...

AI Technical Summary

Problems solved by technology

The deficiencies in the above-mentioned prior art are: 1. Due to the limitation of the spatial position of the support bushing B and the power input shaft C, the maximum diameter of the roller H of the grinding roller assembly F is also limited, thereby reducing the rated capacity of the roller mill. Yield

2. The power input is from the power input shaft C, the hanger D, and the swing rod G, and finally output to the grinding roller assembly F, which makes the power transmission chain longer, resulting in poor rigidity of the swing rod G, and easily causes vibration during work

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