CN1619177A

CN1619177A - Integrated rolling bearing for ball grinder

Info

Publication number: CN1619177A
Application number: CN 200410096641
Authority: CN
Inventors: 杨和平; 腊桂平
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-12-06
Filing date: 2004-12-06
Publication date: 2005-05-25
Anticipated expiration: 2024-12-06
Also published as: CN100334364C

Abstract

The present invention disclosed an integrated rolling bearing technique for ball grinding mill. The described rolling bearing integrates with the bearing packet, bearing, upper portion of bearing seat, seal, lubrication and location into one body. The exterior of outer raceway of the described rolling bearing can be designed into spherical surface, also can be designed into cylindrical surface, and can be matched with lower portion of bearing seat of the ball grinding mill, and the inner hole of inner raceway can be designed into cylindrical surface, also can be designed into conical surface.

Description

The comprehensive rolling bearing that pebble mill is used

Technical field

The present invention relates to ore grinding kind equipment field, specifically relate to the used a kind of comprehensive rolling bearings of industry pebble mill such as metallurgical mine, building materials, electric power.

Background technique

Known, use traditional pebble mill substantially in industries such as metallurgical mine, building materials, electric power at present, its main bearing is a Sliding bush.Replace Sliding bush with rolling bearing, thus saving power, and this is the practical new technology that industry is applied.But in force, there is deficiency.One class scheme is: all change the main bearing seat of traditional pebble mill, adopt the main bearing seat of fully newly making, new main bearing seat is the parts of fulcrum ball grinding mill barrel, is again the bearing bag of rolling bearing.Pin is not located in rolling bearing and main bearing seat bottom, when full mill (being commonly called as bloated tripe) takes place with pebble mill in metallurgical mine, the feed end quill shaft can be lifted, rolling bearing also can lift thereupon, contacts with the normal cooperation of main bearing seat bottom thereby break away from, when the feed end quill shaft resets, owing to do not locate the spacing of pin, be not easy to return to original-pack coordination and put, because main bearing seat top and main bearing seat bottom are bolted together, can destroy main bearing seat when serious again.And this scheme cost is higher.Atypical scheme is: utilize traditional main bearing of ball grinding mill seat top and main bearing seat bottom, remove existing Sliding bush, rolling bearing is loaded on the position of Sliding bush, existing felt pan is still used in sealing, pebble mill is after operation a period of time, the felt pan that contacts with quill shaft has wearing and tearing, can not stop entering of extraneous grit and water, vapour effectively, must cause wearing and tearing or corrosion to rolling bearing; And existing Sliding bush is radially thinner, and the radial dimension of the rolling bearing that is adopted also is restricted, if machining spindle bearing top and main bearing seat bottom can influence its intensity.

Purpose

The objective of the invention is to design the comprehensive rolling bearing that a kind of pebble mill is used, described rolling bearing Ji Zhouchengbao, bearing, main bearing seat top, sealing, lubricate, be positioned one.Use the rolling bearing of this pattern, the main axle bush of traditional pebble mill is transform as the energy-saving ball mill of rolling bearing type, technology is reliable, and cost is suitable, and it is convenient to install.

Technological scheme

The outside of the outer raceway of described comprehensive rolling bearing is protruding sphere, and its concave spherical surface with traditional main bearing of ball grinding mill seat bottom is matched, and can satisfy the comprehensive off-centre that ball mill barrel produces in installation and operation like this; Two locating column pin-and-holes of raceway exterior design outside, two column pin holes 180 degree of being separated by, the size dimension of each column pin hole should be consistent with the column pin hole at concave spherical surface center, main bearing seat bottom, easily the installing and locating pin; An oil hole is respectively designed in the both sides of raceway outside column pin-and-hole outside; The both ends of the surface of raceway are provided with tapped hole outside, so that fixing dust cover; The bore design of interior raceway is cylndrical surface or conical surface; Rolling element can be a tapered roller, can be cylindrical roller, also can be spheroid; The outer raceway of described comprehensive rolling bearing, interior raceway, retainer can be designed as integral body, also can be combined by several parts.

During installation, bearing support top, bearing bag, lubrication system, the both sides of removing traditional main bearing of ball grinding mill seat are covered thoroughly, keep the main bearing seat bottom, and keep the location pin at concave spherical surface center, main bearing seat bottom; Described comprehensive rolling bearing is installed on the quill shaft of pebble mill, described rolling bearing is loaded in the concave spherical surface of main bearing seat bottom again, and the protruding sphere of its outer raceway outside is matched with the concave spherical surface of main bearing seat bottom, the location pin at concave spherical surface center, main bearing seat bottom just in time inserts in the outside set column pin hole of the outer raceway of described rolling bearing; Again dust cover is fixed by bolts to the both ends of the surface of described comprehensive rolling bearing, the faying surface of raceway is smeared bearing seal fat outside dust cover and described rolling bearing, gap between dust cover and the quill shaft, need plug to fill out bearing seal fat, described bearing seal fat is patented product (patent No. is ZL01115377.6), can buy.Like this, then install.In actual use, can be grease-added by the set oil hole of described comprehensive rolling bearing; Described rolling bearing is reversing of position up and down, makes its wearing and tearing evenly.Material, processing technology, heat treatment, method of inspection and the standard of this comprehensive rolling bearing bearing are all carried out national standing order.The present invention is equally applicable to autogenous tumbling mill and rod mill.Below in conjunction with accompanying drawing specific embodiments of the present invention is described in further detail.

Description of drawings

Fig. 1---front view of the present invention

The A-A sectional drawing of Fig. 2---Fig. 1

Fig. 3---dust cover schematic representation of the present invention

The D-D sectional drawing of Fig. 4---Fig. 3

Fig. 5---scheme of installation of the present invention

Embodiment

Specific embodiment is just like Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5: the 1st, outer raceway, the 2nd, rolling element, the 3rd, interior raceway, the 4th, column pin hole, the 5th, oil hole, the 6th, the tapped hole that end face is set, the 7th, retainer, the 8th, dust cover, the 9th, through hole, the 10th, groove, the 12nd, the location pin, the 13rd, the main bearing seat bottom, the 14th, the main bearing seat base plate, 15 and 16 are respectively fixing bolt and nut, 17 and 18 are respectively stud bolt an nut, the 11st, fixedly the bolt of dust cover 8 usefulness removes the related parts 1 of described comprehensive rolling bearing, 2,3,4,5,6,7,8,9, outside 10, parts 11 to 18 all are prior art.This rolling bearing is assembled on the quill shaft, install location pin 12 at the concave spherical surface center of main bearing seat bottom 13, again described rolling bearing is contained on the main bearing seat bottom 13, location pin 12 is inserted in the set column pin hole 4 of described rolling bearing, then dust cover 8 is fixed to the both ends of the surface of described rolling bearing by bolt 11, bolt 11 screws in the tapped holes 6, dust cover 8 with outside the faying surface of raceway 1 add bearing seal fat, filling bearing seal fat in groove 10, this promptly installs.Can be grease-added by oil hole 5, column pin hole 4 can upper and the next transposing.

21 metallurgical mines of specific embodiment traditional overflow pebble mill of MQY3245,62 tons of ball loads, ore hardness f=14,0.3～0.074 millimeter of ore discharge granularity, output 50-25 ton/hour, 630 kilowatts of synchronizer power; Carried out reducing energy consumption according to the technical program, removed existing bearing support top, Lubricating-oil Station, bearing bag, both sides and cover thoroughly, comprehensive rolling bearing has been installed; Described comprehensive rolling bearing external form is a sphere, spherical diameter S=1450 millimeter, identical with pebble mill bearing support bottom concave spherical surface diameter, described rolling bearing is wide 320 millimeters, endoporus is a conical surface, tapering 1: 30, conical bore top diameter d=1080 millimeter, 2,500 thousand Ns of dynamic loads, 1.35 millimeters of radial internal clearancies; After coming into operation, keeping obtaining comparatively ideal effect under the constant situation of every technical data; Save power 12%, pebble mill operates steadily, and every three months adds lubricating grease one time, does not almost have regular maintenance.

Claims

1, the comprehensive rolling bearing used of pebble mill also is applicable to autogenous tumbling mill and rod mill, it is characterized in that: described comprehensive rolling bearing Ji Zhouchengbao, bearing, bearing support top, sealing, lubricate, be positioned one.

2, described comprehensive rolling bearing is characterised in that: its outer raceway outside can be designed as sphere, also can be the cylndrical surface, and interior raceway endoporus can be designed as the cylndrical surface, also can be conical surface.

3, described comprehensive rolling bearing is characterized in that: its outer raceway, interior raceway and retainer can be whole, also can be combined by several parts.

4, described comprehensive rolling bearing is characterized in that: its rolling element can be the circular cone aligning roller, also can be spheroid or cylindrical body;

5, according to claim 1, it is characterized in that: outer two the locating column pin-and-holes of raceway exterior design of comprehensive rolling bearing, its orientation 180 degree of being separated by.

6, according to claim 1, it is characterized in that: in the both sides of each locating column pin-and-hole, every side designs an oil hole;

7, described comprehensive rolling bearing is characterized in that: outer raceway both ends of the surface design tapped hole.

8, according to claim 1, it is characterized in that: described comprehensive rolling bearing design has dust cover, and dust cover can be made up of two bodies, also can be made as many splits and form, and dust cover is provided with the groove of fill plug seal fat.