CN2366330Y

CN2366330Y - Roller bearing with inner ring single block edge and flat block ring

Info

Publication number: CN2366330Y
Application number: CN 99223720
Authority: CN
Inventors: 李景荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-10
Filing date: 1999-05-10
Publication date: 2000-03-01
Anticipated expiration: 2009-05-10

Abstract

The utility model relates to a high-speed railway bus bearing, particularly a roller bearing with an inner ring, a single block edge and a flat block ring. The utility model is composed of an outer ring, an inner ring, a retainer, a single block ring and a rolling body. The utility model is characterized in that the outer ring, the inner ring, the single block ring and the rolling body are made of YB (T) 1-80 or YJZ84 standard vacuum degassed steel. A rolling track of the outer ring has convexity which is used for shaping and processing the convexity of the rolling body; the retainer is made of QT50-20 nodular cast iron to form a small round-angle square window hole structure without rivets. The utility model has the advantages of high tensile strength, high rigidity, good toughness, good vibration damping performance, good abrasive resistance, long service life, etc.

Description

The inner ring single block border also is with the loose rib cylindrical roller bearing

The utility model relates to a kind of high-speed railway passenger bearing---and the inner ring single block border also is with the loose rib cylindrical roller bearing.

Bearing belongs to common component, is again consumable accessory, carries out international unified standard, and it serves fields such as industry, agricultural, national defence, railway, traffic, mine, metallurgy, machinery.Communications and transportation is the basic activity of national economy, and railway transportation is the main artery of the national economic development, according to statistics, existing international train of China and express train 122 row are inferior at present, these passenger vehicle bearings need from external import, and year needs imported bearing 14,000 covers approximately, need 500 lands to pick up ten thousand U.S. dollars approximately.In addition, the existing at present ordinary passenger express train of China, nonstop bus, about 1800 row of slow train, every train traction 19 joint compartments, maintain and replace system is by force carried out with 16 cover bearings in every joint compartment, year consumption bearing 300,000 covers.Because railway speed increase, be to guarantee transportation safety in recent years, ordinary passenger express train passenger vehicle, straight visitor etc. is all adorned and is used imported bearing, thereby state's outer bearing pours in Chinese market, has impacted the development of national industry, and country has increased the foreign exchange expenditure again greatly.Therefore the production domesticization of passenger vehicle bearing has caused strong repercussion in the industry, and it is imperative to produce homemade high-speed railway passenger bearing.

The purpose of this utility model provides that a kind of high-speed railway passenger bearing that selection is good, rational in infrastructure, long service life is safe and reliable that is applicable to that high-speed railway passenger is used--the inner ring single block border also is with the loose rib cylindrical roller bearing, is used for substituting Japanese KOYO, German FAG, Sweden SKF imported bearing.

The utility model inner ring single block border also is with loose rib cylindrical roller bearing content Description:

The utility model inner ring single block border also is with the loose rib cylindrical roller bearing, form by outer ring, inner ring, retainer, loose rib and rolling body five parts, it is characterized in that: inner ring, outer ring, loose rib, rolling body adopt the vacuum-degassed steel of YB (T) 1-80 or YJZ84 standard to make, and retainer adopts the QT50-20 spheroidal graphite iron to make; Retainer is a no rivet roundlet angle square window pore structure; The raceway of outer ring has convexity, and its convexity is δ=0-0.005mm; Employing has the rolling body of convexity, and its convexity is δ=0.015-0.025mm, is a loose rib in the outside of rolling body.

The utility model inner ring single block border also is with the selection of loose rib cylindrical roller bearing good, adopts vacuum-degassed steel to make outer ring, inner ring, loose rib and rolling body, material purity height, and air content is few, can improve the bearing rated load, prolongs bearing service life; Reasonable in design, the cup raceway convexity has cushioning effect, and inner ring, the outer ring rib of band angle have the automatic aligning function, there is no the stress concentration circle, improve the intensity and the service life of bearing, and can make increases 2-3 service life doubly; Adopt the QT50-20 spheroidal graphite iron to make no rivet roundlet angle square fenestra retainer and solved the drawback that retainer ruptures, the utlity model has high-tensile, high hardness, good toughness, damping property is good, resistance to abrasion is good characteristics, performance is safe and reliable.

Embodiment:

Fig. 1 is for the inner ring single block border and be with loose rib cylindrical roller bearing structural representation

The utility model inner ring single block border and be to realize like this with the loose rib cylindrical roller bearing, see Fig. 1, form by outer ring 1, inner ring 2, rolling body 3, retainer 4, loose rib 5 five parts, outer ring 1, inner ring 2, rolling body 3, loose rib 5 are to be made by the vacuum-degassed steel of YB (T) 1-80 or YJZ84 standard, the raceway of outer ring 1 has the convexity of δ=0-0.005mm, and the effect of damping aligning is arranged; Inner ring 2 is to adopt vacuum-degassed steel to make, and can improve the rated load of bearing, increases the service life; Retainer 4 adopts the QT50-20 spheroidal graphite iron to make, and its structure is a no rivet roundlet angle square window well format, has increased tensile strength, and has solved the drawback of retainer easy fracture; Loose rib 5 is in the outside of rolling body 3, and rolling body 3 is the linear pattern rolling body have been carried out convexity repair type processing, and its convexity is δ=0.015-0.025mm, and the effect of damping aligning is arranged.

Claims

1. a high-speed railway passenger bearing--the inner ring single block border also is with the loose rib cylindrical roller bearing, form by outer ring, inner ring, retainer, loose rib and rolling body five parts, it is characterized in that: inner ring, outer ring, loose rib, rolling body adopt the vacuum-degassed steel of YB (T) 1-80 or YJZ84 standard to make, and retainer adopts the QT50-20 spheroidal graphite iron to make; Retainer is a no rivet roundlet angle square window pore structure; The raceway of outer ring has the convexity of δ=0-0.005mm, adopts the rolling body that has convexity, and its convexity is δ=0.015-0.025mm, is a loose rib in the outside of rolling body.