CN207315533U - Thrust main beating cap - Google Patents

Abstract

The utility model discloses a kind of thrust main beating cap, the both sides of the thrust main beating cap are used for installing thrust plate respectively, it is characterized in that, the first thrust groove and the second thrust groove of semi-annular shape are respectively equipped with the both sides of the face of thrust main beating cap, first thrust groove and the second thrust groove are arranged symmetrically with the central plane of thrust main beating cap, first thrust groove and the second thrust groove are respectively intended to assembling thrust plate, the first locating slot and the second locating slot are further respectively had on the both sides of the face of thrust main beating cap, the both sides of first locating slot and the asymmetrical main bearing hole center line in thrust main beating cap of the second locating slot, it is assemblied on the medial surface of the first thrust groove and the thrust plate in the second thrust groove and is respectively equipped with and the first locating slot and the matched positioning protrusion of the second locating slot.There is misloading phenomenon when can prevent I. C. engine crankshaft thrust plate from assembling in the thrust main beating cap, and the accuracy of thrust plate assembling is ensure that, so that it is guaranteed that safe and reliable during internal combustion engine operation.

Description

Thrust main beating cap

Technical field

Crankshaft thrust structure is the utility model is related to, more particularly to a kind of thrust main beating cap.

Background technology

Internal combustion engine thrust main beating cap be it is a kind of be installed on cylinder block bottom, with cylinder block cooperatively fixed crankshaft main shaft The part of neck, is also equipped with thrust plate on thrust main beating cap both sides of the face, for the axially position of fixed crankshaft, prevents bent axle Axial float in operation process.Thrust surface is with bent axle contact surface (herein referred as thrust plate front) due to being opposite sliding friction Face, general machining accuracy, roughness requirements are higher, and require to design oil storage tank on thrust plate sliding surface, ensure good profit It is sliding.It is machining accuracy, coarse and thrust surface and mainshaft cap thrust groove contact surface (herein referred as thrust plate reverse side) do not relatively rotate Degree requirement is relatively lower, and thrust plate reverse side is also without oil storage slot structure.Therefore the positive and negative of thrust plate does not allow instead Dress, just in case anti-dress, the friction between thrust plate front and bent axle increases, and be easy to cause insufficient lubrication phenomenon, causes crankshaft thrust collar Abnormal to cross quick-wearing, if serious or even thrust plate occurs burning out failure.

Traditional thrust main beating cap locating scheme is：Positioning pin is installed to fix thrust plate in main beating cap both sides, and And main beating cap both sides dowel hole is arranged symmetrically along spindle hole, and thrust plate positive and negative is exchanged and can also normally be assembled, if Thrust plate positive and negative, which is likely to occur, if assembler is careless for the moment exchanges misloading phenomenon.

As above analyze, traditional thrust main beating cap has the disadvantage that：1st, will additional processing on mainshaft cap and thrust plate High-precision pin hole, when assembling, will additionally install positioning pin, and design structure is more complicated, and processing cost is higher；2nd, thrust plate can Installation is exchanged with positive and negative, being likely to occur thrust plate positive and negative if assembler for the moment general idea exchanges misloading phenomenon.

The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the utility model, and It is not construed as recognizing or implies that the information structure has been existing well known to persons skilled in the art in any form Technology.

Utility model content

The purpose of this utility model is to provide a kind of thrust main beating cap, can prevent I. C. engine crankshaft thrust plate from assembling When there is misloading phenomenon, ensure that thrust plate assembling accuracy, so that it is guaranteed that safe and reliable during internal combustion engine operation.

To achieve the above object, the utility model provides a kind of thrust main beating cap, the both sides of the thrust main beating cap For installing thrust plate respectively, it is characterised in that be respectively equipped with the first of semi-annular shape on the both sides of the face of thrust main beating cap Thrust groove and the second thrust groove, the first thrust groove and the second thrust groove are arranged symmetrically with the central plane of thrust main beating cap, the One thrust groove and the second thrust groove are respectively intended to assembling thrust plate, and first is further respectively had on the both sides of the face of thrust main beating cap Locating slot and the second locating slot, in the first locating slot and the asymmetrical main bearing hole in thrust main beating cap of the second locating slot The both sides of heart line, are assemblied on the medial surface of the first thrust groove and the thrust plate in the second thrust groove and are respectively equipped with and the first positioning Groove and the matched positioning protrusion of the second locating slot.

Preferably, the first locating slot and the second locating slot for square groove and erect setting.

Preferably, the first locating slot and the second locating slot are each passed through the first thrust groove and the second thrust groove, the first positioning The groove depth of groove is more than the 0-1mm of the groove depth of the first thrust groove, and the groove depth of the second locating slot is more than the 0- of the groove depth of the second thrust groove 1mm。

Preferably, the groove depth of the first thrust groove and the second thrust groove is 1-3mm.

Compared with prior art, the utility model has the advantages that：Pass through the design pair in thrust main beating cap The thrust groove of title and asymmetrical locating slot, corresponding thrust plate design with the shape, and thrust plate is stuck in locating slot when assembling, and hinder Only thrust plate produces rotation, and such a thrust slice mounting structure is safe and reliable, plays the role of positioning and thrust bent axle well. And two locating slots are relative to main bearing hole center unsymmetrical arrangement, thrust plate can not adjust opposite direction to assemble, and prevent thrust Piece misloading, ensure that the accuracy of thrust plate assembling, so that it is guaranteed that the security reliability of internal combustion engine in the process of running.

Brief description of the drawings

Fig. 1 is the top view of thrust main beating cap according to the present utility model；

Fig. 2 is the front view of thrust main beating cap according to the present utility model.

Embodiment

Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is described in detail, it is to be understood that this practicality New protection domain and from the limitation of embodiment.

Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members Part or other parts.

As shown in Figure 1 to Figure 2, according to a kind of thrust main beating cap of the utility model embodiment, thrust master The both sides of bearing cap are used for installing thrust plate (not shown) respectively, and half is respectively equipped with the both sides of the face of thrust main beating cap Circular the first thrust groove 11 and the second thrust groove 12, the first thrust groove 11 and the second thrust groove 12 are with thrust main beating cap Central plane 4 is arranged symmetrically, the common plane where the central axis of the mounting hole 5 of the central plane 4 of this programme, i.e. both sides, First thrust groove 11 and the second thrust groove 12 are respectively intended to assembling thrust plate, are also set respectively on the both sides of the face of thrust main beating cap There are the first locating slot 21 and the second locating slot 22, the first locating slot 21 and the second locating slot 22 is asymmetrical is in thrust base bearing The both sides of the main bearing hole center line 3 of lid, are assemblied in the medial surface of the first thrust groove 11 and the thrust plate in the second thrust groove 12 On be respectively equipped with and 22 matched positioning protrusion of the first locating slot 21 and the second locating slot.

As a kind of preferred embodiment, the first locating slot 21 and the second locating slot 22 for square groove and erect setting,

As a kind of preferred embodiment, the first locating slot 21 and the second locating slot 22 are each passed through the first thrust groove 11 and Two thrust grooves 12, the groove depth of the first locating slot 21 are more than the 0-1mm of the groove depth of the first thrust groove 11, the groove depth of the second locating slot 22 More than the 0-1mm of the groove depth of the second thrust groove 12.This mechanism may insure that thrust plate and locating slot are bonded completely.

As a kind of preferred embodiment, the groove depth of the first thrust groove 11 and the second thrust groove 12 is 1-3mm.

In such scheme, designed with the shape with the thrust groove in thrust main beating cap, locating slot when corresponding thrust plate designs, Thrust plate is stuck in locating slot when assembling, and prevents thrust plate to produce rotation, and such a thrust slice mounting structure is safe and reliable, is risen Good positioning and the effect of thrust bent axle are arrived.And two locating slots are relative to main bearing hole center unsymmetrical arrangement, thrust Piece can not adjust opposite direction to assemble, therefore this kind of designing scheme plays the role of preventing thrust plate misloading, ensure that thrust The accuracy of piece assembling, so that it is guaranteed that the security reliability of internal combustion engine in the process of running.

To sum up, the thrust main beating cap of the present embodiment, by designing symmetrical thrust groove and non-in thrust main beating cap Symmetrical locating slot, corresponding thrust plate design with the shape, and thrust plate is stuck in locating slot when assembling, and prevent thrust plate from producing rotation Turn, such a thrust slice mounting structure is safe and reliable, plays the role of positioning and thrust bent axle well.And two locating slot phases For main bearing hole center unsymmetrical arrangement, thrust plate can not adjust opposite direction to assemble, and prevent thrust plate misloading, ensure that only The accuracy of push jack assembling, so that it is guaranteed that the security reliability of internal combustion engine in the process of running.

The description of the foregoing specific exemplary embodiment to the utility model be in order to illustrate and illustration purpose.These Description is not wishing to for the utility model to be defined to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out Many change and variations.The purpose of selecting and describing the exemplary embodiment is that explain the certain principles of the utility model And its practical application, so that those skilled in the art can realize and utilize a variety of examples of the utility model Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shape Formula is limited.

Claims (4)

1. a kind of thrust main beating cap, the both sides of the thrust main beating cap are used for installing thrust plate respectively, it is characterised in that described The first thrust groove and the second thrust groove of semi-annular shape, first thrust are respectively equipped with the both sides of the face of thrust main beating cap Groove and second thrust groove are arranged symmetrically with the central plane of the thrust main beating cap, first thrust groove and described Two thrust grooves are respectively intended to assembling thrust plate, further respectively have on the both sides of the face of the thrust main beating cap the first locating slot and Second locating slot, first locating slot and the asymmetrical base bearing in the thrust main beating cap of second locating slot The both sides of centerline hole, are assemblied on the medial surface of first thrust groove and the thrust plate in second thrust groove and set respectively Have and first locating slot and the matched positioning protrusion of the second locating slot.

2. thrust main beating cap according to claim 1, it is characterised in that first locating slot and second positioning Groove is square groove and erects setting.

3. thrust main beating cap according to claim 2, it is characterised in that first locating slot and second positioning Groove is each passed through first thrust groove and second thrust groove, and the groove depth of first locating slot is more than first thrust The 0-1mm of the groove depth of groove, the groove depth of second locating slot are more than the 0-1mm of the groove depth of second thrust groove.

4. thrust main beating cap according to claim 1, it is characterised in that first thrust groove and second thrust The groove depth of groove is 1-3mm.