CN104747593A

CN104747593A - Combined bearing

Info

Publication number: CN104747593A
Application number: CN201410000045.9A
Authority: CN
Inventors: 刘运武
Original assignee: 刘运武
Current assignee: Beijing Lang long science and Technology Co., Ltd.
Priority date: 2014-01-01
Filing date: 2014-01-01
Publication date: 2015-07-01
Anticipated expiration: 2034-01-01
Also published as: CN104747593B

Abstract

The invention discloses a combined bearing, aims at providing a bearing which is assembled by corresponding to an oversize main shaft, is simple in structure, easy to manufacture and low in cost, and can be produced by non-professional manufacturers. The key points of the technical scheme are as follows: one shaft sleeve is turned according to inner and outer diameters, wherein the inner diameter can be tightly adhered to a main shaft, the outer diameter and the thickness can ensure that the strength can achieve firmness and durability; the peripheral edge of the shaft sleeve is turned to form an annular groove or an annular convex strip according to the technological requirements, or the left and right parts, in the thickness direction of the shaft sleeve are turned to form shapes such as annular bevel edges; three or four small external bearing sleeves are arranged at the outer edge of the shaft sleeve sleeving the main body at equal intervals, are adhered to the shaft sleeve and are used for supporting and positioning the shaft sleeve and the main shaft so as to prevent the shaft sleeve and the main shaft from moving left and right and moving back and forth during operation; synchronous rotation in which the main shaft and the shaft sleeve are in drive type and the small external bearing sleeves are driven is driven by power.

Description

A kind of combination bearing

Technical field

The present invention relates to its location of transmission part in machine or instrument or apparatus and rotate, is more precisely more specifically the rolling bearing for rotating.

Technical background

Because rolling bearing not only greatly can reduce the on-stream frictional resistance of machine, improve mechanical efficiency, and safeguard simple, axially occupy little, long period can use and need not refuel, so to be widely used on various machine and to have achieved standardization, seriation, various rolling bearing has carried out manufacturing and supply in full sets according to normalized specification.Its internal diameter of rolling bearing minimum at present only has 4 millimeters, weight just 5 grams, and the large-diameter roller bearing diameter in some large excavator reaches 2 meters, often overlaps nearly 3000 kilograms of weight, and visible size differs greatly.Its product of difference according to rolling element respectively have multiple, to act on classification nothing more than radial location and the large class of end thrust two.

The basic structure of rolling bearing is as depicted in figs. 1 and 2: be ball ball by outer race 1, inner race 2, rolling element 3(Fig. 1, and Fig. 2 is cylinder ball, ball and rolling element) and retainer 4 formed.Raceway on inside and outside circle is returned rolling element and is provided a very smooth surface except the range of movement of restriction rolling element, to reduce frictional resistance each other in the rolling, limit the axially displaced of rolling element to a certain extent, keep its fixing rigging position.The effect of retainer is then to keep rolling element be circumferentially uniformly distributed and be spaced from each other, unanimously stressed, maintains Internal and external cycle relative position, keeps its concentricity.During work, inner race and the axle of bearing closely cooperate, and together rotate with it, and outer race is then arranged in bearing support, are the part of geo-stationary.A few cases, if automotive wheel is being contained on " front-rear axle " of inner race geo-stationary, and outer race is contained on hub for vehicle wheel and together rotates with it.

Thrust bearing, owing to bearing end thrust, namely moves after stoping axle, so do not have inside and outside ring support, is respectively moving-coil and replaces with fixed circle.

Because various bearing all must be arranged on its effect of competence exertion on axle, must supporting corresponding large bearing when running into larger or especially big main shaft, thus because selling at exorbitant prices causes manufacturing and upgrading the high deficiency of cost in the future.

Summary of the invention

The present invention, for solving above-mentioned deficiency, aims to provide a kind of structure simple, and making easily i.e. amateur producer will definitely produce, and the excessive main shaft of a kind of correspondence with low cost the bearing critical piece that is equipped with, be achieved by the following technical solutions.

According to dimension of inner and outer diameters car axle sleeve, namely axle is held tightly by axle sleeve fitting tightly to be as the criterion with axle installation position by its internal diameter size, its external diameter and thickness are determined with enough intensity and firm and durable, and according to technological requirement, outer rim contour side car is circularized the recessed or annular half of boss of half of circle, or annular triangle is convex or annular triangle is recessed, or square shape annular is recessed or square shape convex annular etc., various convex annular or recessed can be wall scroll or two bar.Also multiple teeth outer rim contour can being made equidistant arrangement become a gear.As long as at its outer rim contour using equidistant another installation three or four little bearings are encased is affixed as location with it for original position rotates and supports, main shaft company and axle sleeve is driven to be initiatively by power, the all each little bearings of edge are encased does run-in synchronism for passive, replaces the standard rolling bearing that one or two price is high thus.

When needs thrust, by axle sleeve outer rim contour both sides car bevel, there is not relative friction with the little bearing funnel overcoat be affixed be as the criterion with on-stream in its gradient, namely run-in synchronism is barrel shift.Prevent displacement before and after main shaft from can distinguish the little bearing of several band tapered jackets of equidistant installation before and after its axle sleeve, only stop it to retreat and only install in back just passable, no matter monolateral or bilaterally add tapered jacket for location by upper bearing (metal), all should at least its lower dead center install additional little bearing encased for supporting in case move down.

When needs drive another root main axis, axle sleeve outer rim contour can be made several equidistant teeth and become a gear, as long as each little bearing outside is made corresponding tooth engage with it, be bearing like this and gear is difunctional double one.

In sum, the technical solution adopted in the present invention is: its bearing by the axle sleeve be arranged on main shaft interior, its outer rim contour is outside encased with several the little bearings (much smaller than axle sleeve) be arranged on frame support, recline each other and combine, thickness between its outer perimeter of axle sleeve and both sides or two circular flat is for being planar annular or annular groove or ring rib, bilateral or monolateral is annular ramp, or be equidistant i.e. equally distributed multiple tooth, or its its thickness of axle sleeve peripheral annual periphery is by uniform tooth and the right and left or monolaterally to be formed by slope, namely the various shapes of axle sleeve outer perimeter are similar with the equipped each little bearing outside edge week reclined respectively is as the criterion fitting each other or engage.

Effective effect one of the present invention reduces costs, containing manufacturing cost and operating cost; Two is be convenient to maintenance and durable in use, and namely then need only change little bearing and cheap and simple and easy to do, axle sleeve is difficult to damage and need not frequently dismantles; Three is that multi-functional i.e. single axle sleeve can replace radial bearing and thrust bearing totally two, be bearing if desired and gear, as hit exactly on thickness by the outer rim contour of axle sleeve about 1/3rd make multiple tooth, the right and left car becomes gradient for fitting with the tapered jacket of little bearing outer rim, be radial bearing and thrust bearing and driving gear, namely single possess three functions.

Accompanying drawing explanation

The annular bearing with rolling contact of Fig. 1 to be rolling element be spheroidal;

Fig. 2 is rolling element is columniform annular bearing with rolling contact;

Fig. 3 is its front section view of the present invention;

Fig. 4 is the front display figure for weight reduction, its axle sleeve being made multiple space on the basis of Fig. 3;

Fig. 5 is the left and right side view (both sides are the same) of Fig. 4;

Fig. 6 to be axle sleeve outer rim contour be annular half of circular groove ditch and its outer rim contour of little bearing outside are the mutually chimeric side view of annular half of boss bar;

Fig. 7 is its thickness the right and left of axle sleeve outer rim contour be slope and little bearing outer rim is the side view that tapered jacket fits.

Specific embodiments

Be described further below in conjunction with accompanying drawing.

With reference to Fig. 3, Fig. 4 and Fig. 5, axle sleeve 6 is arranged on RC main shaft 5, its upper, left and right three directions are separated by 120 ° and are separately installed with each little bearing encased 14 and are close to its outer perimeter, little bearing is encased to be arranged on the little axle 8 in center, little axle 8 directly or indirectly (Fig. 3 is that Fig. 4 and Fig. 5 is direct indirectly) is arranged on bearing support 9.

With reference to Fig. 6, its outer perimeter of the axle sleeve 6 center car be arranged on main shaft 5 has half of toroidal cavity, mutually recline for little bearing adds the half of ring raised line overcoat 7 hit exactly as protruding with interior, namely located by ring rib and support and prevent its axle sleeve 6 axially displaced with the on-stream front and back of main shaft 5, the little bearing of additional ring rib overcoat 7 is arranged on little axle 8, and little axle 8 is arranged in bearing support or bearing support (not shown).

With reference to Fig. 7, the thickness both sides being arranged on its outer perimeter of axle sleeve 6 on main shaft 5 are respectively outer narrow inner width i.e. outer thin interior thick annular ramp, upper with left and right each one of slope, surrounding left and right, before and after the next, both sides (only illustrating one-sided in figure) reclines for little bearing adds tapered jacket 12 in each one mutually with left and right respectively, its lower dead center center reclines for the additional cylindrical jacket of little bearing mutually with interior, each little bearing adds tapered jacket or cylindrical jacket is arranged on static support 11 by the little axle in center 8, the encased role of each little bearing supports axle sleeve 6 and main shaft 5 and locate, namely its on-stream front and back are prevented to be shifted up and down or to rock.According to technological requirement, its tapered jacket also can only be arranged on the one-sided of main shaft back.

Claims

1. a combination bearing, it is characterized in that by the axle sleeve be arranged on main shaft Inner, its outer rim contour and be arranged on several little bearings on frame support encased outside, recline and combine each other.

2. a kind of combination bearing according to claim 1, the thickness that it is characterized in that between its outer perimeter of axle sleeve and both sides or two circular flat is planar annular or annular groove or ring rib, bilateral or monolateral contour is annular ramp, or is with the tooth equidistantly distributed; The shape of axle sleeve outer perimeter is similar with the little bearing outside edge week reclined respectively, is namely as the criterion fitting each other or engage.

3. a kind of combination bearing according to claim 1 and 2, is characterized in that its thickness of axle sleeve peripheral annual periphery is by uniform some teeth and the right and left or monolaterally jointly to form for slope.