CN103807303A

CN103807303A - Center-shaft-type cylindrical roller bearing

Info

Publication number: CN103807303A
Application number: CN201410075187.1A
Authority: CN
Inventors: 李岚
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-03-03
Filing date: 2014-03-03
Publication date: 2014-05-21

Abstract

The invention discloses a center-shaft-type cylindrical roller bearing. The center-shaft-type cylindrical roller bearing comprises an inner sleeve ring, an outer sleeve ring, a row of cylindrical waist-diameter sunken center shaft rollers and a rolling circular ring retainer; an excircle roller way of the inner sleeve ring or a roller way of the outer sleeve ring is internally sleeved with a rolling circular ring C-shaped retainer; the center-shaft-type cylindrical roller is embedded in a C opening of the rolling circular ring C-shaped retainer; the center-shaft-type cylindrical roller is fully filled with the C-shaped retainer while the outer sleeve ring is arranged. A bearing surface is increased by increasing the number of the rollers so as to improve the load capacity of the bearing; the noise is reduced by reducing the frictional surfaces of the retainer and the rollers, and the service life of the bearing is prolonged.

Description

A kind of central-axis type roller bearing

Technical field

The present invention relates to mechanical field, is to replace existing roller bearing, is to be used in the innovative bearing of the integrated practicality of same photoelectricity machine.

Background technique

In the epoch of global machinery develop rapidly, existing traditional bearing structure can not meet the Technology Need of machinery development.The selfaligning roller bearing of installing in existing machinery equipment is example; So supporting feature, bearing structure exists: inside race. outer collar. and single-row or double-row cylindrical roller; Brass frame retainer is combined into a set of roller bearing.Selfaligning roller bearing has single-row or biserial roller, and radially bearing capacity is large, is applicable to bear heavy load and impact load.N-type and NU type can move axially, and can adapt to, because of thermal expansion or axle together and shell variation, can do free end and use.Processing request to axle or seat hole is higher, and bearing is installed the rear relative deflection of outer coil axis and will strictly be controlled, and to avoid causing stress to concentrate, separable being convenient to of inner and outer ring mounts and dismounts.And be widely used and iron and steel. papermaking. sea-freight. petrochemical industry. electric power. in the machinery such as mine.Tradition selfaligning roller bearing also has deficiency, it is characterized in that; (1) physical machine add (brass. bronze. spheroidal graphite cast iron) retainer, more than the rolling element space taking in bearing race exceedes 10-25%.Therefore existing selfaligning roller bearing reduces by 1/3rd load-carrying ability than same size full-complement cylinder roller bearing bearing load ability; (2) in machinery high speed operation, occurring, there is fracture metal fragment and can cause serious injury to other component in axle box in retainer; (3) traditional cylindrical bearing is because rubbing surface between retainer and rolling element is very large, whole rolling element has 1/3rd surface to be kept device parcel, rolling element and retainer produce huge heat in the middle of bearing operation, because retainer can not discharge heat to the parcel of rolling element effectively, cause the too high actual life that makes lubricant oil of device temperature significantly to reduce, overhaul of the equipments frequency increases, and the user cost of equipment improves; (4) be wrapped in rolling element surface in the middle of bearing operation and be difficult to form oil film protection because rolling element is kept device, the effect of lubricant oil reduces, thereby causes bearing to shorten working life.(5) rolling element and retainer between friction increased resistance, make energy consumption increase; (6) friction area between retainer and rolling element causes greatly selfaligning bearing can not be applicable to high-revolving machinery.There is many difficult problems that is difficult to overcome in the supporting structure of existing traditional roller bearing, needs a kind of new bearing support structure that is more suitable for modern machinery and equipment demand for development of scholar and research unit research and development design.

Summary of the invention

In order to overcome the shortcoming of existing roller bearing, the roller bearing of the brand-new supporting structure of design research and development.Solving existing roller bearing carrying low. noise is large. and the life-span is short. and safety coefficient is low. the shortcomings such as rotating speed is low.

Central-axis type roller bearing is that the supporting plane that improves rolling element increases a bearing capacity, and the rubbing surface reducing between retainer and rolling element is theory, Integral lifting selfaligning roller bearing property indices.New design proposal is identical with the external dimension of the existing international aligning roller of ISO, also can determine boundary dimension according to device requirement.

A kind of employing design proposal of central-axis type roller bearing is; (2) the single-row central-axis type cylindrical roller of inside race (1) outer collar (4) rolling annulus C type retainer (3).Four part compositions, rolling annulus C type retainer is inserted in the raceway of inside race, central-axis type cylindrical roller being embedded in the C mouth of rolling annulus C type retainer, when filling up central-axis type cylindrical roller, load onto outer collar, be combined into a set of central-axis type roller bearing.

In a kind of outer collar of central-axis type roller bearing, raceway is designed to tubular edge band rib and without two kinds of ribs.Inside race cylindrical raceway is designed to tubulose, and two edge designs has rib and without two kinds of ribs.Rolling element is designed to, and cylindrical roller intermediate portion circumference has rolling groove, and bottom portion of groove is axle shape and convexity sphere designs two kinds, the depression curved angle of rolling groove top edge chamfering.Retainer adopts annulus split external tooth C shape rolling retainer, annulus retainer inner ring and the design of bearing inner race raceway surface of contact are " U " shape, the design of retainer C shape mouth and drum type spherical roller bottom portion of groove surface of contact is " U ", retainer forms an annulus retainer by two semicircles, annulus C shape retainer is used as the spacing isolation of central-axis type cylindrical roller and supports, and isolates uniformly drum type spherical roller.

This its advantage of central-axis type roller bearing is, adopts the international bearing universal standard of LiaoISO boundary dimension.Reconfigure bearing structure support technology, thereby it being low to have broken through international roller bearing carrying. noise is large. low yoke of life-span.So this its feature of central-axis type roller bearing supporting structure its: (1) has increased roller quantity and has improved bearing load carrying capacity, and bearing capacity has improved 20%; (2) cancel original flower basket type machine and added brass retainer and stamping steel plate gaily decorated basket retainer, avoid retainer to scratch roller sphere, the rubbing surface that improves roller flexibility ratio (3) retainer and rolling element has reduced by 90%, has reduced surface friction drag, can reduce energy consumption; (4) surface of contact of retainer and rolling element reduces, the reducing noise producing due to bearing operation in machinery equipment 30%--50%; (5) surface friction drag reduces, thereby can improve 20%-30% running speed; (6) because the sphere of retainer and spherical roller has not had point of contact, retainer scratch spherical roller surface phenomenon has not also existed, thereby can form oil film protective layer on the surface of roller, makes bearing improve 50% working life; (7) thus retainer and roller have reduced rubbing surface because of fricative worn metals also corresponding minimizing; (8) bearing is in operation, and the retainer machinery damage of components causing that ruptures has obtained avoiding in this Novel bearing structure, and safety coefficient improves 20%; (9) do not had machine to add the parcel of brass gaily decorated basket retainer, cylindrical roller heat radiation is more smooth and easy, has reduced by 90% by retainer and the roller heat producing that rubs, and the failure period of lubricant oil is extended; (10) design of outer ring oil groove oilhole can make bearing better be lubricated, and improves the working life of bearing; (11) the production technology simple material cost 20% of this novel bearing, it is convenient to safeguard.The innovative bearing of this practicality, is applicable to the growth requirement of following machinery.At blower fan. high-speed rod, in the machinery such as speed reducer, install and use and reach design operation parameter effect completely due to conventional construction selfaligning roller bearing.

Accompanying drawing explanation

A kind of central-axis type roller bearing has totally 4 pages, 8 accompanying drawings;

Fig. 1 is central-axis type roller bearing side schematic view.

Fig. 2 is central-axis type roller bearing generalized section.

Fig. 3 is central-axis type roller bearing inside race schematic diagram.

Fig. 4 is central-axis type roller bearing outer collar schematic diagram.

Fig. 5 is central-axis type roller bearing annulus C mouth retainer outward opening schematic diagram.

Fig. 6 is central-axis type roller bearing annulus C mouth retainer inner opening schematic diagram.

Fig. 7 is central-axis type cylindrical roller schematic diagram.

Fig. 8 is that central-axis type cylindrical roller coordinates schematic diagram with annulus C mouth retainer.

Embodiment is invented a kind of central-axis type roller bearing: specific embodiment as shown in Figure 2;

Installation steps: be the cylindrical raceway and ring-like C shape mouth retainer (4) or (8) relative coupling at inside race (2), on the C shape mouth of C type mouth-shaped retainer (4) and (8) (5) or insert the relative coupling of central-axis type cylindrical roller (3) above (9), then inside race (2) with stick with central-axis type cylindrical roller (3), be installed in the endoporus of (1) in the middle of outer collar endoporus combination be relatively Fig. 1 when shown in central-axis type roller bearing.

Claims

1. a central-axis type roller bearing it is characterized in that being divided into and being had rib and without two kinds of ribs by (1) outer collar inner circle, and the cylindrical of (2) inside race divides band rib and without two kinds of ribs. and (4). two semicircle composition annulus outer rings and the multiple C shapes of two kinds of circumference of inner circle are inlayed a mouthful sheet retainer.(3) one row's single-row cylinder roller intermediate portion circumferential recess rollers form a set of bearing, and bearing internal structure adopts roller to be the mutual vertical arrangement of 90 degree; Single central-axis type depression cylindrical roller is use, and an annulus C shape retainer (4) or (8) two multiple C shapes of semicircle composition annulus outer ring circumference are inlayed mouthful (5) sheet retainer and are stabilized in inner ring raceway and raceway of outer ring.There is circumferential recess groove (6) centre of the cylindrical roller in all bearings, central-axis type cylindrical roller hollow slot (6) is inlaid into retainer C shape mouth (5) or (9), and central-axis type cylindrical roller (3) is running fit with retainer (4) or (8).; Invention bearing structure coupling it is characterized in that the cylindrical raceway and of (2) inside race is arranged single-row central-axis type cylindrical roller (3) and the multiple C shapes of one or two semicircle composition annulus outer ring circumference inlay mouthful sheet retainer (4) or mate (8), (2) the one single-row central-axis type cylindrical rollers of row (3) are inlayed mouthful (5) or (9) retainer with two multiple C shapes of semicircle composition annulus outer ring circumference and are mated (3), and outer collar (1) is mated with central-axis type cylindrical roller (3); Be a set of novel roller bearing by the common coupling of said sequence.

2. a kind of central-axis type roller bearing according to claim 1, is characterized in that inside race (2) circular tube shaped, and its two edge designs has grade limit and without rib.

3. a kind of central-axis type roller bearing according to claim 1, is characterized in that the endoporus of outer collar (1) in a tubular form; Its edge designs has rib and without rib.

4. a kind of central-axis type roller bearing according to claim 1, the cylindrical geometrical shape that it is characterized in that central-axis type cylindrical roller (3) is cylinder, middle part circumference is provided with hollow slot (6), and hollow slot bottom design is plane and two kinds of structures of convexity sphere.Groove top and roller surface chamfer are designed to sphere fillet.

5. want a kind of central-axis type roller bearing described in 1 according to right, it is characterized in that cylindrical roller (3) medium position design circumferential recess groove (6) is to inlay mouthful relative a coupling of (5) retainer with two multiple C shapes of semicircle composition annulus outer ring circumference, (6) two kinds of structures of C shape mouth (5) or (9) inner plane and convexity sphere, become the interval stable support of central-axis type cylindrical roller (3).

6. a kind of central-axis type roller bearing according to claim 4, the middle part circumferential recess groove (6) that it is characterized in that central-axis type cylindrical roller (3) and the multiple C shapes of one or two semicircle composition annulus outer ring circumference are inlayed mouthful (5) sheet retainer and are contacted cooperation for loosening line.

7. a kind of central-axis type roller bearing one annulus according to claim 1 or multiple C shapes of two semicircles composition annulus outer ring circumference inlay mouthful sheet retainer (4) or (8) it is characterized in that; Sheet annulus cylindrical is processed C shape mouth (5) or (8) of equivalent amount uniformly at sheet annulus cylindrical according to the quantity of the required central-axis type cylindrical roller of bearing.The surface of contact of C shape mouth and barrel shaped roller bottom portion of groove (6) is designed to two kinds, plane and sphere.The diameter of sheet annulus retainer (4) or (8) is less than central-axis type cylindrical roller outer collar (1) diameter of bore, is greater than inside race cylindrical raceway (2).C shape mouth opening (5) size is less than the central-axis type cylindrical roller groove diameter of axle, and C shape mouth (5) Inner Dimension is greater than Zhou Jing (6) in central-axis type cylindrical roller groove.

8. a kind of central-axis type roller bearing according to claim 1, it is characterized in that completely having filled a row central-axis type cylindrical roller (3) in the raceway ditch of inside race (2) and outer collar (1) and circumference multiple C shapes in annulus outer ring are inlayed mouthful sheet retainer (4) and (8), central-axis type cylindrical roller (3) on the retainer of inner ring raceway.

9. a kind of central-axis type roller bearing according to claim 1, it is characterized in that the cylindrical raceway ditch of inside race (2), to be all that same radius size is relative be matched to a bearing for the inner circle road ditch of outer collar (1) and the profile of central-axis type cylindrical roller (3).