CN206860683U - A kind of bearing shell of oilhole compensation - Google Patents

Abstract

The utility model discloses a kind of bearing shell of oilhole compensation, a kind of bearing shell of oilhole compensation is included in the top bearing shell and lower bearing separated at radius, circumferentially distributed oil groove is provided with the middle part of the top bearing shell, the side wall of the oil groove with bottom land is angled is obliquely installed, and the opening of the side wall composition of two oil grooves gradually increases, the oilhole of two circumferentially distributed long waist types is provided through in the oil groove, the oilhole runs through the partial sidewall of oil groove, optimize fluid and spread composition in the axial and circumferential direction of bearing shell, so that lubricating oil is more preferable in the effect of axial and circumferential.

Description

A kind of bearing shell of oilhole compensation

Technical field

A kind of auto parts field is the utility model is related to, more particularly to a kind of bearing shell of oilhole compensation.

Background technology

Bearing shell is the internal combustion engines such as diesel engine, gasoline engine and the key fitment of engineering machinery class, while is also used for compressor, note The accessory of the Engineering movable machinery such as water pump, and main quick-wear part, with Hyundai Motor, communications and transportation, agricultural machinery With the development of engineering machinery, the demand of its engineering machinery is in rising trend, more and more extensive to the application technology of bearing shell.

Authorization Notice No. is that 204828303U Chinese patent discloses a kind of three-decker main bearing shell, including main bearing shell base Body, it is characterised in that circumferentially extension is provided with oil groove, the oil groove pair from the beginning to the end on the inner cylinder face of the main bearing shell matrix The central angle answered is 85~110 °, and oil-through hole is provided with watt wall of the oil groove；Oilhole is arranged in bearing shell.

When bearing shell is arranged in main spindle box, the oilhole of bearing shell and the aligning accuracy for having oilhole of main spindle box directly affect into Oily efficiency, therefore during actual production life, the precision of the oilhole of main spindle box be also influence one of main spindle box scrappage because Element.

Utility model content

The purpose of this utility model is to provide a kind of bearing shell of oilhole compensation, reduces the positional precision to the oilhole of main spindle box It is required that.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of bearing shell of oilhole compensation, is included in the top bearing shell and lower bearing separated at radius, the middle part of the top bearing shell Be provided with circumferentially distributed oil groove, the side wall of the oil groove with bottom land is angled is obliquely installed, and the side of two oil grooves The opening of wall composition gradually increases, and the oilhole of two circumferentially distributed long waist types, the oil are provided through in the oil groove The partial sidewall of oil groove is run through in hole.

Using such scheme, the oilhole of long waist shaped causes the oilhole of bearing shell with allowing when the cooperation of the oilhole of main spindle box With larger circumferential position deviation amount, and on width, the long waist type oilhole through the side wall of oil groove also increases width On size, give the oilhole of main spindle box certain position selection when installation, the oil groove side wall being obliquely installed optimizes Fluid spreads in the axial direction of bearing shell to be formed so that fluid can be stored in master vertically after oil groove is entered from oilhole Between axle and the side wall of oil groove, and produce the axial of oil film during main axis or play and convey；In addition, the oil of long waist type Hole can preferably produce week in one section of ring-type storage chamber around the high oil reserve of main shaft of interior formation of oil groove from lubricating oil is caused To diffusion effect.

More preferably：The vertical circumferential end faces in oil groove of inwall of the oilhole.

Using such scheme, vertical inwall causes the easier punch forming of long gain, is easy to process, and be molded it The arcuation inwall of oil groove afterwards can have certain angle with the RADIAL of bearing shell where it；Namely when oil-feed, oil The inwall of groove can be formed forward in the guiding function in the direction of rotation, so as to strengthen the guiding of fluid and diffusion.

More preferably：Two oilholes are symmetrical set, and two angles between oilhole and the center of circle be 48 ° ~ 54°。

Using such scheme, due to the effect of gravity, be bonded in main shaft with lower bearing it is closer, and by the setting of oilhole It is partial to the effect that the circumferential end faces of top bearing shell can preferably make fluid produce diffusion and lubrication in position；And when oilhole too close to When the circumferential end of lower bearing, the fluid between lower bearing and main shaft or may be caused excessive, the interior table of lower bearing to be present Thicker oil film can be formed between face and main shaft, this will cause main shaft to produce the effect floated or even rocked；By oilhole Position, which is arranged on 48 ° ~ 54 °, can just obtain preferable oil film effect.

More preferably：The angle of the side wall of the oil groove is 60 °.

Using such scheme, the angle of increase oil groove side wall can increase fluid in the axial diffusion effect of bearing shell, and The openings of sizes of oil groove is also increased while the angle for increasing oil groove side wall, that is to say, that the contact area meeting of main shaft and bearing shell Corresponding to reduce, bearing shell can also decline to the supporting effect of main shaft, and difficulty of processing can also increase；It it is 60 ° in side wall angle When can all obtain preferable value to the condition of above-mentioned three.

More preferably：Be provided with one of circumferential end faces of the top bearing shell vertical stamping forming jet-bedding and Retention Hp, the jet-bedding run through the circumferential end faces and peripheral outer wall of top bearing shell, and the retention Hp is being arranged in arc surfaced protrusion The peripheral surface of top bearing shell, the planar end surface in top bearing shell circumferential direction of the retention Hp are the bottom land of jet-bedding；The jet-bedding with The axially spaced setting of oil groove.

Using such scheme, relative to existing retention Hp processing mode, strike out bearing shell circumferential end faces are directly vertical The retention Hp of type, groove will not be formed on the inwall of bearing shell, so as to ensure that the integrality of inner surface；It is located in bearing shell When the drive of main shaft therein continuous play, the position where retention Hp can bear bigger axial force and be torn without causing Split or crack;And main shaft coordinates more preferably when relatively rotating with retention Hp, it is not easy to produce cut;And Jet-bedding can reduce thin-wall construction generation with interval setting so that overall structural strength is more preferable.

More preferably：The axial end face along top bearing shell of the retention Hp is plane, and the arc of the retention Hp Shape face and the intersection of plane are provided with stress fillet.

Using such scheme, the abutting of plane cooperatively forms spacing, and stress fillet is then, avoids in the production of the end of retention Hp Give birth to wedge angle and produce stress concentration when coordinating with connecting rod, the isostructural big end hole of bent axle.

More preferably：The intersection two-by-two of three side walls of the jet-bedding is provided with the first chamfering.

Using such scheme, avoid producing tear in the root of side wall connection when punching press.

More preferably：The top bearing shell includes steel layer and the ternary alloy layer that is arranged on steel layer inwall, and described three Wall thickness of first alloy-layer close to end is gradually reduced.

The substrate filled using such scheme, steel layer as ring, good support effect is played, and ternary alloy layer is usually Electroplate the corrosion resistance and lubricant effect in steel layer inwall, strengthening inwall with this；And then can be right with the wall thickness reduction of its formation Wall thickness change caused by bearing shell installation or punching press compensates, and coordinates so as to obtain more preferable circularity with main shaft.

More preferably：The material of the ternary alloy layer is PbSn10Cu2.

Using such scheme, PbSn10Cu2 has higher plasticity, can produce along emerging deformation, have good anti-attrition Energy and corrosion resistance；The internal layer for being set to bearing shell can be with

More preferably：Jet-bedding and retention Hp are also equipped with the lower bearing, when lower bearing and top bearing shell are combined into When full circle, the jet-bedding of jet-bedding and top bearing shell on lower bearing is in a center of symmetry.

Using such scheme, top bearing shell is oil-feed, and lower bearing does not have oil groove as support, and lubricating oil from top to bottom exists The surface of lower bearing forms floating oil film, and lubrication and support effect well are obtained with this.

In summary, the utility model has the advantages that：

The oilhole of long waist shaped causes the oilhole of bearing shell with allowing have larger week when the cooperation of the oilhole of main spindle box To position deviation amount, and on width, the size on width is also increased through the long waist type oilhole of the side wall of oil groove, is being pacified Give the oilhole of main spindle box certain position selection when dress.

Brief description of the drawings

Fig. 1 is the structure chart of the bearing shell of embodiment 1；

Fig. 2 is the structure chart at the top bearing shell visual angle from the bottom to top of embodiment 1；

Fig. 3 is the structural representation of the oil groove of embodiment 1；

Fig. 4 is the sectional view of the circumferential center line along oilhole of embodiment 1；

Fig. 5 is the structure chart of the top bearing shell of embodiment 1；

Fig. 6 is enlarged drawings of the Fig. 5 of embodiment 1 at A；

Fig. 7 is the bearing shell Rotating fields schematic diagram of embodiment 1.

In figure, 1, lower bearing；2nd, top bearing shell；3rd, retention Hp；4th, oil groove；5th, oilhole；11st, steel layer；12nd, ternary alloy layer； 21st, jet-bedding；22nd, the first chamfering；23rd, transition cambered surface；24th, bottom land；31st, stress fillet.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but As long as all protected in the scope of protection of the utility model by Patent Law.

Embodiment 1：A kind of bearing shell with high intensity location structure, as shown in figure 1, including top bearing shell 2 and lower bearing 1, Both are semicircle, are abutted when installation with end face and form a complete bearing shell full circle, for wearing main shaft.

Reference picture 2 and Fig. 3, the middle part of top bearing shell 2 are provided with two circumferentially distributed oil grooves 4, two side walls of oil groove 4 Angle be 60 °, and the opening of the side wall composition of two oil grooves 4 gradually increases, and strengthens the axial direction along bearing shell of lubricating oil with this Diffusion effect.

Reference picture 4, the oilhole 5 of two circumferentially distributed long waist types is provided through in oil groove 4, and oilhole 5 runs through oil groove 4 Partial sidewall, and vertical circumferential end faces in oil groove 4 of inwall of oilhole 5.Two oilholes 5 are symmetrical set, and two oilholes 5 Angle between the center of circle is 48 ° ~ 54 °.With this so that bearing shell is when being attached to main spindle box, in oilhole 5 in the oil with main spindle box Hole, which matches somebody with somebody to close, allows have larger circumferential position deviation amount, gives the oilhole of main spindle box certain position when installation Selection, reduce the scrappage of main spindle box.

Reference picture 5 and Fig. 6, the vertical He of stamping forming jet-bedding 21 is provided with one of circumferential end faces of top bearing shell 2 Retention Hp 3.Jet-bedding 21 runs through the circumferential end faces and peripheral outer wall of top bearing shell 2;Retention Hp 3 protrudes the axle on being arranged in arc surfaced Watts 2 peripheral surface, the planar end surface in the circumferential direction of top bearing shell 2 of retention Hp 3 are the bottom land 24 of jet-bedding 21.This retention Hp 3 Structure relative to the processing of traditional retention Hp 3, groove will not be formed on the inwall of bearing shell, so as to ensure that the complete of inner surface Whole property；Bearing shell is with reinforcement structure stabilization and anti-scratch effect.

Jet-bedding 21 and 4 axially spaced setting of oil groove.The axial end face along top bearing shell 2 of retention Hp 3 is plane, and fixed The position arcuation face of lip 3 and the intersection of plane are provided with stress fillet 31, to reduce the damage to the installing component outside bearing shell. The intersection two-by-two of three side walls of jet-bedding 21 is provided with the first chamfering 22, between the first chamfering 22 and three side walls of jet-bedding 21 It is provided with transition cambered surface 23；With this, the stress concentration situation of groove root in process is reduced, is also reduced in use The situation of tear is produced because of main shaft axial float.The groove depth of 21 vertical end face of jet-bedding is 1/3rd of the thickness of top bearing shell 2, is rushed The groove depth of groove 21 radially is the half of the thickness of top bearing shell 2；In this way, stamping forming retention Hp 3 vertical in bearing shell end When the projection in face, the size of evagination is about the half of end surface thickness, and the cambered structure better performances being molded, and is made With when anti-axial impact ability it is also stronger.

Reference picture 1, jet-bedding 21 and retention Hp 3 are also equipped with lower bearing 1, when lower bearing 1 and top bearing shell 2 are combined into full circle When, the jet-bedding 21 of jet-bedding 21 and top bearing shell 2 on lower bearing 1 is in a center of symmetry.And lower bearing 1 is main supporting part Part, lower bearing 1 do not set oilhole 5, and lubricating oil is from top bearing shell 2 with the inner surface for being transferred to lower bearing 1 of main shaft.

Reference picture 7, lower bearing 1 include steel layer 11 and the ternary alloy layer 12PbSn10Cu2 being arranged on the inwall of steel layer 11, The substrate that steel layer 11 fills as ring, good support effect is played, and ternary alloy layer 12 is usually to electroplate in the inwall of steel layer 11, Strengthen the corrosion resistance and lubricant effect of inwall with this；And when plating, wall thickness of the ternary alloy layer 12 close to end Be gradually reduced, with this can to bearing shell install or punching press caused by wall thickness change compensate, so as to obtain more preferable circularity with Main shaft coordinates.

Claims (10)

1. a kind of bearing shell of oilhole compensation, is included in the top bearing shell (2) and lower bearing (1) separated at radius, the top bearing shell (2) Middle part be provided with circumferentially distributed oil groove (4), it is characterized in that：The side wall of the oil groove (4) and bottom land (24) are into certain angle Degree is obliquely installed, and the opening of the side wall composition of two oil grooves (4) gradually increases, and two are provided through in the oil groove (4) The oilhole (5) of circumferentially distributed long waist type, the oilhole (5) run through the partial sidewall of oil groove (4).

2. a kind of bearing shell of oilhole compensation according to claim 1, it is characterized in that：The inwall of the oilhole (5) it is vertical in The circumferential end faces of oil groove (4).

3. a kind of bearing shell of oilhole compensation according to claim 2, it is characterized in that：Two oilholes (5) are in symmetrically to set Put, and angle of two oilholes (5) between the center of circle is 48 ° ~ 54 °.

4. a kind of bearing shell of oilhole compensation according to claim 1, it is characterized in that：The angle of the side wall of the oil groove (4) For 60 °.

5. a kind of bearing shell of oilhole compensation according to claim 1, it is characterized in that：One of them of the top bearing shell (2) Vertical stamping forming jet-bedding (21) and retention Hp (3) are provided with circumferential end faces, the jet-bedding (21) is through top bearing shell (2) Circumferential end faces and peripheral outer wall, the retention Hp (3) is being arranged at the peripheral surface of top bearing shell (2) in arc surfaced protrusion, described The planar end surface in top bearing shell (2) circumferential direction of retention Hp (3) is the bottom land (24) of jet-bedding (21)；The jet-bedding (21) and oil groove (4) axially spaced setting.

6. a kind of bearing shell of oilhole compensation according to claim 5, it is characterized in that：The retention Hp (3) is along top bearing shell (2) Axial end face be plane, and the arcuation face of the retention Hp (3) and the intersection of plane are provided with stress fillet (31).

7. a kind of bearing shell of oilhole compensation according to claim 6, it is characterized in that：Three side walls of the jet-bedding (21) Intersection is provided with the first chamfering (22) two-by-two.

8. a kind of bearing shell of oilhole compensation according to claim 1, it is characterized in that：The lower bearing (1) includes steel layer (11) and the ternary alloy layer (12) that is arranged on steel layer (11) inwall, the ternary alloy layer (12) close to end wall thickness by It is decrescence small.

9. a kind of bearing shell of oilhole compensation according to claim 8, it is characterized in that：The material of the ternary alloy layer (12) For PbSn10Cu2.

10. a kind of bearing shell of oilhole compensation according to claim 5, it is characterized in that：It is also equipped with the lower bearing (1) Jet-bedding (21) and retention Hp (3), when lower bearing (1) is combined into full circle with top bearing shell (2), the jet-bedding on lower bearing (1) (21) it is in a center of symmetry with the jet-bedding (21) of top bearing shell (2).