CN204113906U

CN204113906U - Novel oil-impregnated bearing

Info

Publication number: CN204113906U
Application number: CN201420572946.0U
Authority: CN
Inventors: 王江林
Original assignee: Individual
Current assignee: Individual
Priority date: 2014-10-07
Filing date: 2014-10-07
Publication date: 2015-01-21
Anticipated expiration: 2024-10-07

Abstract

The utility model discloses that a kind of cost of production is low, wear resistance and greasy property is good, intensity is high, the novel oil-impregnated bearing of gummed phenomenon not easily occurs, include race ring and bearing hole composition that metallic dust makes, also include the inner ring that the bimetallic plates lower than race ring porosity are made, inner ring is located between race ring and bearing hole, and bimetallic plates to be two-layerly made up of inside and outside.The internal layer of described bimetallic plates is copper metal layer.The skin of described bimetallic plates is set to steel plate layer.Uniform porose on described inner ring.Described inner ring is connected with the form be located in dovetail groove by dovetail between race ring.Described hole is square hole, prismatic hole or circular hole.High by the porosity in the utility model race ring, its wear resistance is lower comparatively speaking; When inner ring is the low inner ring of porosity that metallic dust is made, the internal layer being located at inner ring is copper metal layer, because the wear-resisting property of copper is good, improves wear resistance of the present utility model.

Description

Novel oil-impregnated bearing

Technical field

The utility model relates to bearing, particularly a kind of novel oil-impregnated bearing.

Background technique

Oil-impregnated bearing, i.e. porous bearings, take metallic dust as main material, common used material has: copper powders, iron powder, iron-copper powder, adopt the sintering body that powder metallurgic method makes, they itself be exactly Porous, and have in the fabrication process can compared with the quantity of free adjustment hole, size, shape and distribution etc.Oil-impregnated bearing is in non-operating state, lubricant oil is full of its hole, thermal expansion coefficient due to oil-impregnated bearing is greater than the thermal expansion coefficient of lubricant oil, during work, lubricant oil is squeezed into rubbing surface from the hole of oil-impregnated bearing, and when quitting work, lubricant oil declines in the hole of sucked back oil-impregnated bearing with temperature again.Oil-impregnated bearing have cost low, can absorbing, noise little, within the longer operating time without features such as lubricating oil fillings, be specially adapted to the working environment not easily lubricating or do not allow oil dirty.Porosity is an important parameter of oil-impregnated bearing.The oil-impregnated bearing worked under high speed, underloading requires that oil content is many, and porosity should be high, and greasy property is good, but wear-resisting property is low; High at the oil-impregnated bearing desired strength of the more lower work of low speed, load, porosity should be low, and wear-resisting property is good, but greasy property is poor.During the oil-impregnated bearing work of making by iron powder, also easily occur to glue together phenomenon with the steel axle be rotatably connected in oil-impregnated bearing.When the oil-impregnated bearing wear resistance using copper powders to make can improve greatly, because the porosity in the race ring of oil-impregnated bearing is low, fewer containing lubricants capacity, cause its greasy property low, cost of production is also high, and profit is also low.

In prior art, the non-oil-impregnated bearing intensity that its intensity of the oil-impregnated bearing made with metallic dust is made lower than casting of metals, because grandson's porosity of non-oil-impregnated bearing is very low, non-oil-impregnated bearing is made to have very high wear resistance, but when porosity is very low, lubricants capacity contained on non-oil-impregnated bearing circle is little, does not even have, thus have impact on the lubricity of non-oil-impregnated bearing.

Summary of the invention

The technical problem that the utility model solves is to provide that a kind of cost of production is low, wear resistance and greasy property is good, intensity is high, the novel oil-impregnated bearing of gummed phenomenon not easily occurs.

The technical solution of the utility model completes like this, novel oil-impregnated bearing, include race ring and bearing hole composition that metallic dust makes, also include the inner ring that the bimetallic plates lower than race ring porosity are made, inner ring is located between race ring and bearing hole, and bimetallic plates to be two-layerly made up of inside and outside.

Further preferred embodiment, the internal layer of described bimetallic plates is copper metal layer.

Further preferred embodiment, the skin of described bimetallic plates is set to steel plate layer.

Further preferred embodiment, uniform porose on described inner ring.

Further preferred embodiment, described inner ring is connected with the form be located in dovetail groove by dovetail between race ring.

Further preferred embodiment, described hole is square hole, prismatic hole or circular hole.

Technique effect of the present utility model is, high by the porosity in the utility model race ring, and its wear resistance is lower comparatively speaking; When inner ring is the low inner ring of porosity that metallic dust is made, the internal layer being located at inner ring is copper metal layer, because the wear-resisting property of copper is good, improves wear resistance of the present utility model.Owing to containing a large amount of lubricant oil in race ring, in operation process, lubricant oil in race ring can enter into rubbing surface by inner ring, ensure that the utility model has and has good lubricity, therefore say, the two combines, and reduces on the basis of cost of production, can also improve its wear resistance and lubricity at minimizing copper consumption.Because copper is softer, not easily occur to glue together phenomenon in copper and steel axle rotation process.When the bimetallic plates of inner ring casting rolling, lubricant oil contained in race ring can enter into rubbing surface by the hole be located on inner ring and lubricate, add the wear resistance of copper, thus can realize improving on the basis of oil-impregnated bearing intensity, ensure its lubricity and wear resistance.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the A-A cross-sectional view of Fig. 1.

Fig. 3 is the structural representation of another embodiment of the utility model.

Fig. 4 is the B-B cross-sectional view of Fig. 3.

Fig. 5 is that this is provided with the inner ring deployed configuration schematic diagram of circular hole embodiment with novel inner ring.

Fig. 6 is that this is provided with the inner ring deployed configuration schematic diagram of prismatic hole embodiment with novel inner ring.

Embodiment

By reference to the accompanying drawings the utility model is described in further detail, as shown in Figure 1 and Figure 2, a kind of novel oil-impregnated bearing, include race ring 4 that metallic dust makes and bearing hole 1 forms, also include the inner ring that the bimetallic plates lower than race ring porosity are made, inner ring is located between race ring 4 and bearing hole 1, and bimetallic plates are made up of internal layer 2 and outer 3.Bimetallic plates can adopt metal powder material to sinter and make, and rolling again of also can first casting forms.

For improving wear resistance of the present utility model, the internal layer 2 of bimetallic plates is set to copper metal layer.

For improving intensity of the present utility model, the skin 3 of bimetallic plates is set to steel plate layer.

For improving greasy property of the present utility model, the lubricant oil in race ring is made to enter into rubbing surface more smoothly, on inner ring uniform porose 5.As shown in Figure 5, Figure 6, the hole 5 on inner ring can be set to square hole, prismatic hole or circular hole.When inner ring metal powder material sintering is made, hole 5 diameter is greater than the pore diameter in race ring 4.

For preventing that relative rotational slide occurs between inner ring with race ring, as shown in Figure 3, Figure 4, described inner ring is connected with the form be located in dovetail groove by dovetail between race ring.

Claims

1. novel oil-impregnated bearing, include race ring and bearing hole composition that metallic dust makes, it is characterized in that: also include the inner ring that the bimetallic plates lower than race ring porosity are made, inner ring is located between race ring and bearing hole, bimetallic plates to be two-layerly made up of inside and outside.

2. novel oil-impregnated bearing according to claim 1, is characterized in that: the internal layer of described bimetallic plates is copper metal layer.

3. novel oil-impregnated bearing according to claim 1, is characterized in that: the skin of described bimetallic plates is steel plate layer.

4. the novel oil-impregnated bearing according to claim 1 or 2 or 3, is characterized in that: uniform porose on described inner ring.

5. novel oil-impregnated bearing according to claim 4, is characterized in that: described inner ring is connected with the form be located in dovetail groove by dovetail between race ring.

6. novel oil-impregnated bearing according to claim 5, is characterized in that: described hole is square hole, prismatic hole or circular hole.