CN202628803U

CN202628803U - Rolling bearing capable of saving electricity for ball mill

Info

Publication number: CN202628803U
Application number: CN 201120579692
Authority: CN
Inventors: 张敬忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-12-24
Filing date: 2011-12-24
Publication date: 2012-12-26
Anticipated expiration: 2021-12-24

Abstract

The utility model discloses a rolling bearing capable of saving electricity for a ball mill. According to the structural characteristics and the transmission stress condition of the ball mill, the outer spherical surface of an outer ring of the rolling bearing and the inner spherical surface of a main bearing pedestal of the ball mill have the same size, are matched mutually, can automatically adjust position and swing, and can improve the stress condition of a hollow shaft at the two ends of the ball mill. The two end faces of a rolling column designed into arc shapes and flanges of inner and outer rings of the rolling bearing form point contact. The inner ring is clamped on a journal of the hollow shaft at the two ends of the ball mill through a split type transitional sleeve. A check ring is positioned at the outer end of the inner ring of a rolling shaft and is locked on the split type transitional sleeve through a group of bolts after being adjusted, so that axial displacement of the rolling bearing is avoided. A sliding bearing of the ball mill is changed into the rolling bearing, so the bearing capacity is high, the service life is long, the starting resistance and the operating resistance are reduced, the starting current is reduced by about 40 percent and the operating current is reduced by about 15 percent. After the transformed ball mill is put into production for 6 to 8 months, the saved electric charge is equal to all the technical transformation investment, so the rolling bearing is particularly applicable to electricity-saving technical transformation of the conventional ball mill.

Description

The rolling bearing of pebble mill economize on electricity usefulness

Technical field

The utility model relates to a kind of rolling bearing of pebble mill economize on electricity usefulness, belongs to mechanical field.

Background technique

Most sliding bearing (Babbitt spherical bush) friction factor that adopt of existing pebble mill are big, and the resistance of start and running resistance are all big during work, and sliding bearing also will be used water cooling except that with the oil lubrication, and water usage is big.

Summary of the invention

The purpose of the utility model is the rolling bearing that a kind of pebble mill economize on electricity usefulness is provided on the basis of ZL200720182183.9 utility model patent; Its friction factor 0.002; Be about sliding bearing friction factor 1/10, the resistance of start and running resistance are all little during work, and simple in structure; It is convenient to transform, and invests little.It is that domestic unique rolling bearing and sliding bearing of making realized exchanging, and is easy for installation, is specially adapted to existing pebble mill power-saving technique transformation.

The purpose of the utility model is achieved in that because pebble mill mainly bears radial load to bearing in the course of the work; But also to bear certain axial load; The main bearing of ball grinding mill base is an inner ball surface; Axle journal is arranged on the quill shaft, therefore when the design rolling bearing, need consider these factors.Rolling bearing is made up of parts such as outer ring, roller, inner rings.The outer ring is designed to outer spherical surface, and is consistent with main bearing of ball grinding mill base inner ball surface size, cooperatively interacts, and can transpose automatically, swing, and can improve two ends quill shaft force-bearing situation.The roller both ends of the surface are born certain axial load, and it is designed to circular arc, make itself and bearing enclose rib form point and contact, and friction factor is littler like this, and power savings is better.Inner ring is stuck on the neck of hollow shaft through a split type spacer shell, and the two ends quill shaft is not wanted any machining and just can be loaded onto rolling bearing like this.Back-up ring is positioned at the rolling bearing inner ring outer end, and the debugging back is locked on the split type spacer shell with one group of bolt, prevents the axial displacement of rolling bearing.

The utility model changes the pebble mill sliding bearing into rolling bearing, and not only bearing capacity is big, long service life, and also the resistance of start and running resistance all descend, and inrush current descends 40% approximately, and revolution electric current descends 15% approximately.Put into production after the pebble mill transformation 6-8 month, only with the electricity charge of saving with regard to recoverable whole investments in technological upgrading.

Below in conjunction with accompanying drawing model utility is further specified.

Description of drawings

Accompanying drawing is the embodiment of the utility model--the rolling bearing half section tectonic maps of-----φ 3.2*13m pebble mill discharge end economize on electricity usefulness.

Embodiment

1---pebble mill quill shaft in the accompanying drawing illustrated embodiment, 2-----split type spacer shell, 3-----outer ring, 4----roller, 5----inner ring, 6-rib, 7-bolt, 8---back-up ring.

Grinding body and the material inner the pebble mill that will transform unload out; Jack-up pebble mill to the height that needs,, take former supporting sliding bearing (Babbitt spherical bush) away the lumps of wood or steel part fulcrum ball grinding mill barrel; Component such as rotating wash bowl mill trunnion 1 and main bearing of ball grinding mill base; With split type spacer shell 2, be stuck on the pebble mill neck of hollow shaft, radially strain the split type spacer shell with chain hois; Be close to pebble mill neck of hollow shaft and spot welding, the split type spacer shell is fixed on the pebble mill quill shaft.Inner ring 5 is sleeved on the split type spacer shell through the oil heating fast, and again with outer ring 3, roller 4 parts such as grade utilize the rolling bearing radial internal clearance to be sleeved on the inner ring.Rib 6 and back-up ring 8 are contained on the split type spacer shell near the inner ring end face, wait to adjust the back with 7 lockings of one group of bolt, prevent the axial displacement of rolling bearing.Cooperate with jack then, withdraw the lumps of wood or steel part, ball mill barrel is fallen housing washer is placed on the main bearing of ball grinding mill base inner ball surface, pebble mill sets back.

The pebble mill discharge end is a fixed end, and feed end is a free end.The rolling bearing inner ring width of free end dress is longer, and two ends do not have rib, and roller can axially relatively move on the inner ring outer surface, can solve the requirement that ball mill barrel expands with heat and contract with cold like this.

After above-mentioned work is finished, but rolling bearing injects just idling lotus test run of lubricant oil, and halfload test run and test run are at full capacity carried out in adjustment more a little, if the rolling bearing temperature rise is in permission range, and does not have unusual vibration sound, just can drop into normal production run.

Claims

1. the rolling bearing of pebble mill economize on electricity usefulness; Comprise the pebble mill quill shaft; It is characterized in that rolling bearing is stuck on the neck of hollow shaft of pebble mill two ends through a split type spacer shell, back-up ring is positioned at the rolling bearing inner ring outer end, is locked on the split type spacer shell with one group of bolt.

2. the rolling bearing of a kind of pebble mill economize on electricity usefulness according to claim 1 is characterized in that the roller both ends of the surface on the rolling bearing that the pebble mill economize on electricity uses are circular arc.