CN2330826Y

CN2330826Y - Articulated bearing

Info

Publication number: CN2330826Y
Application number: CN 98214140
Authority: CN
Inventors: 孙宗斌; 陈生瑞; 武庆焱; 张贵刚
Original assignee: WANXIANG SPHERICAL JOINT FACTORY SHANXI PROVINCE
Current assignee: WANXIANG SPHERICAL JOINT FACTORY SHANXI PROVINCE
Priority date: 1998-05-15
Filing date: 1998-05-15
Publication date: 1999-07-28
Anticipated expiration: 2008-05-15

Abstract

The utility model relates to an articulated bearing. The ball head type bearing structure adopted in a movably connecting part of the existing machinery is complex, poor in accuracy, easy to be wearing and short in service life. In the utility model, a high-strength zinc-based alloy bushing which is inlaid in a steel base body is relatively fixed with the base body, and a ball head of a ball head assembly part is slidingly matched and is inlaid in the bushing. The structure has good bearing integrity, few components, high strength, good lubricity, high precision and long service life. The utility model is used for the manipulation of automobiles, etc., the steering system has flexible, accurate and reliable operation, and the service life can reach the degree considerable to the service life of automobiles.

Description

Joint shaft bearing

The utility model belongs to a kind of joint shaft bearing that mechanical part flexibly connects that is used for.

The normal bulb bearing that adopts of existing machinery parts kinematic coupling portion is a fabricated construction, number of spare parts is many, complex structure, since be to assemble after the machining, difficult quality control, the not criminal's of being card, be exactly that the space is too big, be in the very poor Frotteurism of lubricity in the work, very easily wearing and tearing, poor reliability, in mechanical manoeuvring system, often need to adopt a plurality of bulb bearings, because its precision is not high, the accumulated error of a plurality of links is big, causes handling not in place, gear selecting gear shift difficulty, the manipulation resistance is big, and is dumb, and pendulum angle and steering range are little.The bearing of this structure is short working life, belongs to the easily damaged parts of auto parts and components.

The utility model aims to provide a kind of simple in structure, precision height, easy operating, the bulb formula joint shaft bearing of long service life.

The technological scheme that realizes above-mentioned purpose is (referring to Fig. 1 embodiment), this joint shaft bearing comprises steel substrate (1), the bulb assembly of forming by steel bulb (2) and screw rod relatively-stationary (4) (5) with it, it is characterized in that, be inlaid with in the described steel substrate and the relatively-stationary zinc base alloy edge cover of matrix (3), the bulb of bulb assembly is embedded in the cover with partly being slidingly matched, and club is positioned at outside the edge cover, is provided with seal ring (6) in the annular sphere jointing place of edge running-on and club root.

This bearing utilizes floating type inserts location technology of existing die casting mould and core filling technique to be made, be about in high strength zinc base alloy that melts and the bulb that the scribbles releasing agent-injection steel substrate, the zinc base alloy that solidifies forms the edge cover and combines securely with steel substrate, bulb and edge cover are peeled off, form the sliding friction fitting surface, in edge cover, inject lubricating grease, overlap the collar extension jointing place at bulb assembly and edge seal ring is set.

Matrix of the present utility model is a double-layer structure with parcel edge cover within it, so just can adopt different materials to make, it adopts the good high strength zinc base alloy of wear-resisting property with the edge cover that bulb directly contacts, the matrix of parcel edge cover is again the high steel material of intensity, can guarantee the intensity of one-piece element like this, can guarantee the wear resistance of bearing again, improved its working life greatly, when being used in it on automobile control lever, this joint shaft bearing life-span can reach the degree suitable substantially with motor live time, and its precision is good simultaneously, and accumulated error is little, so handle reliable, laborsaving flexibly.Also to have a constituent elements few for this bearing in addition, good integrity, the advantage that greasy property is good, again since this structure can connect with other parts by its steel substrate part, but enlarged the coupling member scope of bearing, thereby can widen its using scope.

Description of drawings

Fig. 1 the utility model bulb formula joint shaft bearing example structure schematic representation

The A of 1-steel substrate 2-bulb 3-zinc base alloy edge cover 4-screw rod 5-bulb assembly 6-seal ring Fig. 2, Fig. 1 is used for schematic representation on the automobile control lever to view Fig. 3, the utility model

7-operating handle 8-joint shaft bearing

Embodiment illustrates (referring to Fig. 1 and Fig. 2)

These routine steel substrate 1 two ends are elongated rod shape, the position, intermediate portion is horizontally through the body of rod and is inlaid with and the relatively-stationary high strength zinc base alloy edge of matrix cover 3, the bulb of steel bulb assembly 5 and the screw rod mode relative fixed of welding, its bulb is embedded in the cover with partly being slidingly matched, the edge running-on exposes the annular sphere of screw rod 4 roots, this position is provided with seal ring 6, with the be slidingly matched face seal of bulb with the edge cover.

The vertical bus of wall that contacts with matrix when the edge cover is a non-linear, laterally section is non-standard when circular, the edge cover just can lock better at vertical and circumferential quilt, combine more firmly with steel substrate, so the wall busbar that the edge of this example cover contacts with steel substrate be the middle part to a projecting inward angle, cross sections is an ellipse.

The speed change pull bar ball-joint assembly that the processing method of this joint shaft bearing has been used for reference the development of late nineteen eighties Japanese Nissan company does not have the manufacturing process that the gap cooperates new technology, and concrete steps are:

1, forged steel pieces (or steel billet machined piece or Cast Steel) is processed into steel substrate with holes, it in this hole coarse hair side (can combine more firmly with the edge cover like this), one convex portion is inwardly arranged at the inwall bottom in hole, and the cross sections in hole is oval (referring to Fig. 2).

2, process the bulb assembly of forming by smooth bulb and screw rod relatively-stationary with conventional machine-tooled method with it;

3, carry out the combined pressure casting: on the basis of above-mentioned steel construction piece, utilize floating type inserts location technology of die casting mould and core filling technique that the high strength zinc base alloy of fusing is cast in the hole of steel substrate with the bulb part that scribbles releasing agent silicone oil, zinc base alloy and steel substrate are combined as a whole securely form the edge cover of bulb;

4, zinc base alloy heat treatment process is routinely carried out ageing treatment to above-mentioned semi-finished product;

5, the screw rod to bulb assembly applies axial force, bulb and edge cover are peeled off and is guaranteed that it rotates flexibly, and any direction criminals of nothing blocks phenomenon;

6, in edge cover, inject lubricating grease, and seal ring is set inlaying the annular sphere position that running-on and screw rod root expose.

Fig. 3 is applied to the structural representation that automobile variable speed is handled the longitudinal rod assembly with this joint shaft bearing, fore-and-aft control bar two ends are connected as a single entity with the welding of matrix bar one end of two joint shaft bearings respectively, promptly replaced original bulb bearing, this control system has greatly been improved the integrated operation performance after adopting the utility model joint shaft bearing, laborsaving, flexible, accurate, become with motor live time substantially suitable degree by original easily damaged parts the working life of bearing.Change the shape of this joint shaft bearing steel substrate, also can be applied to various machinery such as aircraft, steamer manipulation, turn to and rotary system.

Claims

1, joint shaft bearing, comprise steel substrate (1), the bulb assembly of forming by steel bulb (2) and screw rod relatively-stationary (4) (5) with it, it is characterized in that, be inlaid with in the described steel substrate and the relatively-stationary zinc base alloy edge cover of matrix (3), the bulb of bulb assembly is embedded in the cover with partly being slidingly matched, and club is positioned at outside the edge cover, is provided with seal ring (6) in the annular sphere jointing place of edge running-on and club root.

2, joint shaft bearing according to claim 1 is characterized in that, the vertical bus of wall that described zinc base alloy edge cover contacts with steel substrate is a non-linear, and laterally section is non-standard circle.