CN217234145U

CN217234145U - Thrust main bearing cap for internal combustion engine

Info

Publication number: CN217234145U
Application number: CN202220231965.1U
Authority: CN
Inventors: 吴建贤; 陈曙光; 唐海洋
Original assignee: Ningbo Haina Machinery Co ltd
Current assignee: Ningbo Haina Machinery Co ltd
Priority date: 2022-01-25
Filing date: 2022-01-25
Publication date: 2022-08-19
Anticipated expiration: 2032-01-25

Abstract

The application discloses internal-combustion engine thrust main bearing cap belongs to engine crankshaft location technical field for solve bearing and footstep bearing cap because interference fit is difficult to the problem of separation, including shell body and neck bush, the neck bush has two at least, the neck bush is circular-arcly, and is a plurality of the neck bush constitutes a whole circle structure, the shell body includes fixed disk and adapter sleeve, fixed disk and adapter sleeve formula structure as an organic whole, the neck bush embedding is in the adapter sleeve. The utility model discloses a but carry out inside and outside double-deck split structural design to the bearing cap, avoid direct rigid contact between bearing and the fixed bearing cap, reduced the degree of difficulty of installation and dismantlement on the one hand, on the other hand avoids needing great impact to cause spare part surface scratch or warp at the dismantlement in-process, through setting up direction sliding construction for between complex shell body and the neck bush, greatly reduced the ascending resistance of bearing cap axis side, it is more laborsaving during the dismantlement.

Description

Thrust main bearing cap for internal combustion engine

Technical Field

The application relates to the technical field of engine crankshaft positioning, in particular to a thrust main bearing cap of an internal combustion engine.

Background

The main bearing cover is a part which is arranged on a main bearing support diaphragm plate of a crankcase and is used as a half main bearing seat, and at present, the thrust main bearing cover of the internal combustion engine is mainly used as a single part and also has a detachable structure which is designed for convenient disassembly and assembly.

However, the existing internal combustion engine thrust main bearing cap has the following defects: for example, in order to ensure that the fixed bearing has sufficient stability during operation, the bearing is generally fixed in an interference fit manner, which undoubtedly makes it laborious to disassemble the bearing, and the bearing cover can be separated by using an impact manner, so that the surface of a smooth part can be scratched or the part can be deformed inevitably in the impact process, thereby affecting the subsequent use smoothness of the bearing to a certain extent. In order to solve the above problems, a new type of main thrust bearing cap for an internal combustion engine is proposed.

Disclosure of Invention

The purpose of this application is, solve bearing and thrust bearing lid because interference fit's difficult problem of separation.

In order to achieve the above purposes, the technical scheme adopted by the application is as follows: this internal-combustion engine thrust main bearing cap, including shell body and neck bush, the neck bush has two at least, the neck bush is circular-arcly, and is a plurality of the neck bush constitutes a whole circle structure, the shell body includes fixed disk and adapter sleeve, fixed disk and adapter sleeve formula structure as an organic whole, the neck bush embedding is in the adapter sleeve, but constitutes bearing cap's split structure.

Preferably, the inner wall of the fastening sleeve is provided with a slot, the outer side surface of the inner lining is provided with a guide strip, and the guide strip is suitable for being inserted into the slot to provide guiding and limiting effects.

Preferably, a sunk groove is formed in one end, far away from the fixed disk, of the fastening sleeve, the main body part of the inner bushing is a clamping ring, one side edge of the clamping ring is provided with an edge protrusion, and the edge protrusion is suitable for being embedded into the sunk groove to further improve the matching degree between the inner bushing and the outer shell.

Preferably, the bottom of the slot is provided with an inclined plane, and one end, away from the edge protrusion, of the guide strip is provided with an inclined plane matched with the slot, so that the assembly process is facilitated.

Preferably, the fixed disc is provided with a limiting ring, and the axes of the limiting ring, the fixed disc and the fastening sleeve are collinear.

Preferably, reinforcing ribs are distributed on one side, opposite to the fastening sleeve, of the fixed disc, and the reinforcing ribs extend from the limiting ring to the edge of the fixed disc.

Preferably, the fixing disc is arranged on the periphery of the fastening sleeve and provided with through bolt holes, and the arc side face of the fixing disc is provided with a positioning groove, so that the shell can be conveniently positioned in an auxiliary manner when being mounted.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the bearing cover is designed into an internal and external double-layer detachable structure, so that direct rigid contact between a bearing and the fixed bearing cover is avoided, the mounting and dismounting difficulty is reduced, and the surface scratch or deformation of parts caused by large impact force in the dismounting process is avoided;

(2) through setting up direction sliding construction for between complex shell body and the neck bush, greatly reduced the ascending resistance of bearing cap axis direction, it is more laborsaving during the dismantlement.

Drawings

FIG. 1 is a schematic illustration of the mating relationship of the thrust main bearing caps of the internal combustion engine;

FIG. 2 is a perspective view of the outer shell of the engine thrust main bearing cap;

FIG. 3 is a cross-sectional view of the outer shell of the thrust main bearing cap of the internal combustion engine in a three-dimensional configuration;

FIG. 4 is an enlarged fragmentary view at A of FIG. 3 of the engine thrust main bearing cap;

fig. 5 is a schematic perspective view of an inner bushing of the internal combustion engine thrust main bearing cap.

In the figure: 1. an outer housing; 101. fixing the disc; 102. a limiting ring; 103. positioning a groove; 104. bolt holes; 105. reinforcing ribs; 106. fastening sleeves; 107. a slot; 108. sinking a groove; 2. an inner liner; 201. a clamping ring; 202. the edge is raised; 203. and (4) a guide strip.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The terms "comprises," "comprising," and "having," and any variations thereof, in the description and claims of this application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The main thrust bearing cap of the internal combustion engine as shown in fig. 1-5 comprises an outer shell 1 and an inner bushing 2, which form a detachable part of the bearing cap, at least two, preferably two, inner bushings 2, which are arc-shaped and conveniently form a convolution structure, a plurality of inner bushings 2 form a complete circle structure for clamping the bearing, the outer shell 1 comprises a fixed disk 101 and a fastening sleeve 106, the fixed disk 101 and the fastening sleeve 106 are of an integral structure, the fixed disk 101 is used for fixing the whole bearing cap on a crankcase, the fastening sleeve 106 is used for clamping the inner bushing 2 and the bearing, the fixed disk 101 is provided with a spacing ring 102 for improving the motion stability of a rotating shaft passing through the fixed disk, the axes of the spacing ring 102, the fixed disk 101 and the fastening sleeve 106 ensure that the motions of the rotating shaft and the bearing matched with the bearing cap can be collinear, the fixed disk 101 is provided with reinforcing ribs 105 on the side opposite to the fastening sleeve 106, can promote the structural strength of fixed disk 101, strengthening rib 105 is extended to the edge of fixed disk 101 by spacing ring 102, makes the bearing cap possess higher thrust ability, and fixed disk 101 has seted up the bolt hole 104 that link up in the periphery of adapter sleeve 106, and the constant head tank 103 has been seted up to the circular arc side of fixed disk 101, provides the positioning action when installing the bearing cap, precision and stability when improving the installation.

The inner wall of the fastening sleeve 106 is provided with a slot 107, the outer side surface of the inner bush 2 is provided with a guide strip 203, the guide strip 203 is suitable for being inserted into the slot 107, on one hand, the inner bush 2 plays a role in guiding and positioning when being installed into the fastening sleeve 106, on the other hand, the inner bush 2 can be prevented from rotating relative to the fastening sleeve 106, the rotation of the outer ring of the bearing after being installed relative to the fastening sleeve 106 is further reduced, the bottom of the slot 107 is provided with an inclined plane, one end, far away from the edge bulge 202, of the guide strip 203 is provided with an inclined plane matched with the slot 107, the structural design mode facilitates the insertion of the inner bush 2 into the fastening sleeve 106, one end, far away from the fixed disk 101, of the fastening sleeve 106 is provided with a sinking groove 108, the main body part of the inner bush 2 is provided with a clamping ring 201 which plays a role in clamping and fixing between the fastening sleeve 106 and the bearing, one side edge of the clamping ring 201 is provided with the edge bulge 202, the edge protrusion 202 is adapted to be inserted into the sunken groove 108, so as to facilitate hiding the edge protrusion 202 in the fastening sleeve 106, and the inner bushing 2 is inserted into the fastening sleeve 106, so that the separated parts can be combined into a bearing cover to integrally limit the bearing.

The working principle is as follows: the use mode of the internal combustion engine thrust main bearing cap comprises the steps that firstly, a fixed disc 101 is fixed on a crankcase body through bolts, then a bearing assembled with a crankshaft is placed in a fastening sleeve 106, the extending end of the crankshaft penetrates through a limiting ring 102 to realize primary fixing of the bearing, then an inner bushing 2 is inserted between the fastening sleeve 106 and the bearing, a guide strip 203 and a slot 107 are aligned with the bearing, then a clamping ring is knocked into a deep part of a gap between the fastening sleeve 106 and the bearing by 201, and the whole bearing cap can be installed until an edge bulge 202 of the inner bushing 2 is completely sunk into a sinking groove 108 on the end face of the fastening sleeve 106; when the bearing cover needs to be disassembled, the bearing and the bearing cover are separated in a collision mode, but due to the fact that the bearing cover is internally provided with the nested structure which is convenient to slide, the bearing and the bearing cover can be easily separated by disassembling personnel only by applying smaller force to the bearing and the crankshaft which are fixed in the bearing cover, and the probability of damage to parts is greatly reduced.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims

1. A main thrust bearing cap for an internal combustion engine, comprising: the outer shell comprises an outer shell body and an inner bushing, wherein the inner bushing is at least two circular arc-shaped and is a plurality of circular arc-shaped structures, the outer shell body comprises a fixed disk and a fastening sleeve, the fixed disk and the fastening sleeve are of an integrated structure, and the inner bushing is embedded into the fastening sleeve.

2. The internal combustion engine thrust main bearing cap of claim 1 wherein: the inner wall of the fastening sleeve is provided with a slot, the outer side surface of the inner lining is provided with a guide strip, and the guide strip is suitable for being inserted into the slot.

3. The internal combustion engine thrust main bearing cap of claim 2 wherein: the fastening sleeve is provided with a sunken groove at one end far away from the fixed disk, the main part of the inner lining is a clamping ring, the edge of one side of the clamping ring is provided with an edge bulge, and the edge bulge is suitable for being embedded into the sunken groove.

4. A main thrust bearing cap for an internal combustion engine as claimed in claim 3 wherein: the bottom of slot is provided with the inclined plane, the gib block is kept away from the bellied one end in edge be provided with slot complex inclined plane.

5. The internal combustion engine thrust main bearing cap of claim 1 wherein: the fixing disc is provided with a limiting ring, and the axes of the limiting ring, the fixing disc and the fastening sleeve are collinear.

6. An internal combustion engine thrust main bearing cap according to claim 5 wherein: reinforcing ribs are distributed on one side, opposite to the fastening sleeve, of the fixed disc, and the reinforcing ribs extend from the limiting ring to the edge of the fixed disc.

7. The internal combustion engine thrust main bearing cap of claim 1 wherein: the fixed disk is arranged on the periphery of the fastening sleeve and provided with through bolt holes, and the arc side surface of the fixed disk is provided with a positioning groove.