CN201696498U

CN201696498U - Metal-based embedded elastic self-lubricating sliding bearing

Info

Publication number: CN201696498U
Application number: CN2010202187325U
Authority: CN
Inventors: 陈汇龙; 彭正东; 林厚强
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2010-06-08
Filing date: 2010-06-08
Publication date: 2011-01-05
Anticipated expiration: 2020-06-08

Abstract

The utility model relates to the technical field of a sliding bearing, in particular to a metal-based embedded elastic self-lubricating sliding bearing, which comprises rubber cushions (1), macromolecular bearing strips (2) and a metal substrate (3). More than six axial grooves with annular fan-shaped approximate ladder-shaped cross sections are opened along the circumference of inner surface on the metal substrate (3). A rubber cushion (1) is arranged at the bottom of each groove. Macromolecular bearing strips (2) in the shape identical to the groove shape are embedded into the rubber cushion (1) under normal temperature. Inner surfaces of the macromolecular bearing strips (2) higher than inner cylindrical surface of the metal substrate (3) form a bearing friction surface. The metal-based embedded elastic self-lubricating sliding bearing has self-lubricating and wear-resisting property of macromolecular materials and elasticity property of rubber, thereby meeting axial soft requirement and effectively prolonging the bearing life. The metal-based embedded elastic self-lubricating sliding bearing is suitable for the field of the normal embedded solid self-lubricating sliding bearing, in particular to the occasion where axial length is longer, bending deformation and vibration are easily produced and bearing is easily worn.

Description

A kind of metal matrix inlaid elastic self-lubricating sliding bearing

Technical field

The utility model relates to the sliding bearing technical field, is the elastic self-lubricating sliding bearing that a kind of metal bearing matrix upper edge internal surface circumferentially embeds some sheet rubbers and macromolecule bearing strip.

Background technique

Sliding bearing is parts very common in the mechanical system, simultaneously also is to be directly connected to the critical component that can machinery or system normally move.Along with the fast development of science and technology, more and more higher to the requirement of bearing performance, particularly shaft length than Da Yi produce crooked, vibrate and have an occasion such as heavy wear, the elasticity of bearing, performance such as wear-resisting and lubricated have been proposed strict requirement.At present, mainly be to improve the lubricant film bearing capacity for the research of sliding bearing, keep Liquid Lubrication Condition, reduce wear, reach and improve the life-span purpose, and obtained tangible result.As: 1. China Patent No. 200820013387.4 proposes a kind of solid lubricant embedded bearing, this bearing comprises the bearing matrix and is embedded in the interior solid lubricant of base body pocket hole and forms, solid lubricant has fully been filled the space of blind hole, avoided the gas drawback of oiling agent lower end, make mechanical motion balance more, prolong bearing life; 2. a kind of dual damascene bearing that contains solid lubricant of proposing of China Patent No. 99224781.0, be used for mechanical bearings such as hydro-electric power generating equipment, bearing wall has the through hole that rule distributes, inlaid solid lubrication agent in the hole, it is sediment ejection trough or oil groove that sleeve inner surface has the netted groove that intersects, neck bush surface strengthens self lubricity, the life-span of prolongation bearing for one deck sintering contains the copper powder metal lubrication layer of solid lubricant.3. U.S. Patent number US7703983 proposes a kind of sliding bearing by having sliding material and lubricant oil is formed.This sliding material is made up of resin and lubricant oil, and resin is the permeable material that surperficial via material area is no less than the gross area 30 percent, and lubricant oil is penetrated in the hole.As seen, above-mentioned metal matrix inlaid self-lubricating solid bearing and new material bearing though obtained tangible progress " preventing gas drawback in the hole " and aspects such as " enhancing selflubricatings ", are not resolved at aspects such as adapting to shaft bending, vibration.Rubber bush bearing has certain elasticity, can satisfy the flexible requirement of axle, but wear no resistance, and very easily loses efficacy because of wearing and tearing.Metal or macromolecular material bearing, wear resistance is good, but poor flexibility, easily makes damage of bearings because of bending shaft distortion or vibration.The sliding bearing of taking into account several respects performance requirement does not also have.

Summary of the invention

The purpose of this utility model be remedy above-mentioned the deficiencies in the prior art and propose a kind ofly can effectively satisfy the novel sliding bearing structure that elasticity, wear-resisting, greasy property require.It mainly is the elasticity of utilizing sheet rubber, the wear-resisting and self-lubricating property of macromolecule bearing strip, reach defectives such as overcoming the easy to wear and metal bearing elasticity deficiency of rubber bush bearing and have the effect of good lubrication performance, obtain the even more ideal sliding bearing that good operation stability, working life are effectively prolonged.

The utility model to achieve these goals, relate generally to architecture advances and combination of materials problem, metal bearing matrix upper edge internal surface is circumferentially offered the axial groove of 6 above transverse section for ring fan-shaped approximate trapezoid, each groove is along the circumferential uniform and big or small unanimity of shape, place one deck sheet rubber at channel bottom, embed macromolecule bearing strip consistent under the normal temperature again, constitute pivot friction face by the macromolecule bearing strip surface that exceeds the matrix inner cylindrical surface with groove shape.Bearing metal matrix internal diameter is slightly larger than the external diameter of axle or axle sleeve, and the ratio that macromolecule pivot friction face area accounts for the metallic matrix internal surface area is 60%-80%, and the degree of depth of groove is a=(D ₃-D ₂)/2, wherein, D ₂Be metallic matrix internal diameter, D ₃Be the metallic matrix trench diameter, the thickness of sheet rubber is 0.3a-0.5a, and the size of height b that bearing strip exceeds the metallic matrix internal surface is consistent with conventional bearing cooling and lubricating groove depth.The macromolecule bearing strip selects materials such as excellent employing polyethylene.

The main effect of the utility model design is: the sheet rubber that (1) respectively encircles the placement of fan-shaped channel bottom has certain elasticity, this performance signals will pass to the macromolecule bearing strip because of the characteristics of ring fan-shaped groove, make its bending deflection or vibration of adapting to axle, avoid the bearing damage of breaking; (2) the macromolecule bearing strip has stronger wear resistance and self-lubricating property, utilize the minor face of its ring fan-shaped consistent with the radian of axle, the internal surface of macromolecule bearing has satisfied wear-resisting and lubricating requirement as pivot friction face, and lubricant medium and system thereof need not be provided in addition; (3) exceed between the adjacent macromolecule bearing strip of metallic matrix inner cylindrical surface and constituted clearance groove, can satisfy lubricated, cooling and require to add cooling liquid or Lubricants when high especially, further improve greasy property, satisfy the cooling requirement.

Description of drawings

Fig. 1 is this novel metal matrix inlaid elastic self-lubricating sliding bearing structural representation.

Among the figure, 1, rubber spacer; 2, macromolecule bearing strip; 3, metallic matrix.

Embodiment

Metallic matrix groove form of the present utility model is ring fan-shaped approximate trapezoid section groove, at first process equally distributed groove at the metallic matrix internal surface, again to bottom land filled rubber bed course, adopting low temperature method that the macromolecule bearing strip is shunk then embeds, recovering the expansion of normal temperature rear bearing bar compresses sheet rubber and exceeds the metallic matrix inner cylindrical surface, because the self-locking action of ring fan-shaped approximate trapezoid section is fixed on macromolecule bearing strip and sheet rubber in the groove.For guaranteeing that the bearing surface of contact that bearing strip constitutes has and axle (or axle sleeve) consistent circularity, can the brearing bore circular hole processing slightly that finish will be inlayed.

Embodiment: in conjunction with the accompanying drawings, D ₁Be metallic matrix external diameter, D ₂Be metallic matrix internal diameter, D ₃Be the metallic matrix trench diameter, b is the height that bearing strip exceeds the metallic matrix internal surface, and the degree of depth of groove is a=(D ₃-D ₂)/2.

For D ₁=100mm, D ₂=82mm, D ₃=92mm, the seal ring of b=1mm can be offered 8 grooves, forms 8 bearing surface of contact, and machining allowance will be considered in each surface particularly bearing surface of contact, makes mould and corresponding blank in view of the above, and by the sliding bearing technical requirements blank is processed.Then, assemble and last processing, obtain high performance sliding bearing by above-mentioned concrete assembly method.

For the bearing and the requirement of different sizes, the length of bearing and the quantity of groove can be determined according to actual conditions.

Claims

1. metal matrix inlaid elastic self-lubricating sliding bearing, it is characterized in that: comprise rubber spacer (1), macromolecule bearing strip (2), metallic matrix (3), described metallic matrix (3) upper edge internal surface is circumferentially offered the axial groove of 4 above transverse section for ring fan-shaped approximate trapezoid, place one deck rubber spacer (1) at channel bottom, embed macromolecule bearing strip (2) consistent under the normal temperature again, by the internal surface formation pivot friction face of the macromolecule bearing strip (2) that exceeds metallic matrix (3) inner cylindrical surface with groove shape.

2. a kind of metal matrix inlaid elastic self-lubricating sliding bearing according to claim 1 is characterized in that: described bearing metal matrix (3) internal diameter is greater than the external diameter of axle or axle sleeve, and each described groove is along the circumferential uniform and big or small unanimity of shape.

3. a kind of metal matrix inlaid elastic self-lubricating sliding bearing according to claim 1 and 2 is characterized in that: the ratio that the gross area of described pivot friction face accounts for metallic matrix (3) internal surface area is 60%-80%, and the degree of depth of described groove is a=(D ₃-D ₂)/2, wherein, D ₂Be metallic matrix (3) internal diameter, D ₃Be the metallic matrix trench diameter; The thickness of described rubber spacer (1) is 0.3a-0.5a, and it is consistent with conventional bearing cooling and lubricating groove depth that the internal surface of described macromolecule bearing strip (2) exceeds the height b of internal surface of metallic matrix (3).

4. a kind of metal matrix inlaid elastic self-lubricating sliding bearing according to claim 1 and 2 is characterized in that: described macromolecule bearing strip (2) selects excellent employing polythene material.