CN220268221U

CN220268221U - Bearing bush structure for improving lubrication

Info

Publication number: CN220268221U
Application number: CN202223384312.6U
Authority: CN
Inventors: 廖帅文; 张锦; 包毅
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2022-12-16
Filing date: 2022-12-16
Publication date: 2023-12-29
Anticipated expiration: 2032-12-16

Abstract

The utility model discloses a bearing bush structure for improving lubrication, which comprises a bearing bush body, wherein the bearing bush body is tightly matched with a bearing seat, the bearing bush body comprises an upper main shaft bush and a lower main shaft bush which are mutually matched, an oil hole is formed in the bottom of the lower main shaft bush, the oil hole penetrates through the lower main shaft bush, and oil guide grooves are respectively formed in the opposite ends of the inner circular surface of the lower main shaft bush. The bearing bush structure has good lubricating effect and is not easy to cause the burning fault.

Description

Bearing bush structure for improving lubrication

Technical Field

The utility model relates to the technical field of diesel engines, in particular to a bearing bush structure for improving lubrication.

Background

The engine converts combustion energy into mechanical energy, heat energy generated by combustion of fuel in a combustion chamber pushes a piston to reciprocate in a cylinder hole, the piston applies in-cylinder pressure to a piston pin, and accordingly the piston pin transmits acting force to parts such as a connecting rod and the like to convert reciprocating motion into rotary motion. In the process of engine motion conversion, a very thin oil film is required to be arranged between a bearing bush and a crankshaft for lubrication. If lubrication is poor, direct friction exists between the bearing bush and the crankshaft, and the friction can generate high temperature, so that the bearing bush is easy to wear. The structure of the current bearing bush is that an open-loop groove is arranged in the middle of the inner circle surface of the bearing bush so as to improve the flowing efficiency of lubricating oil and ensure that the lubricating is more sufficient.

The prior patent, the patent name is a novel bearing bush, and the patent publication number is CN202500900U, discloses a novel bearing bush, and including the body, be equipped with fore-and-aft oil groove of leading on the circular-arc body, lead to be equipped with on the oil groove and lead the oilhole, lead the oilhole and be provided with 4. The utility model has the beneficial effects that: certain lubricating oil can be added into the oil guide groove through the oil guide hole, so that friction generated between the bearing bush body and the rotating shaft is small, and the service life of the bearing bush is prolonged; four oil guide holes are formed in the oil guide hole, so that oil injection is facilitated; can prevent the deposition of scraps and oil dirt.

Disclosure of Invention

Aiming at the problems, the utility model provides a bearing bush structure for improving lubrication, which has good lubrication effect and is not easy to cause the bearing bush burning fault.

The utility model adopts the following technical scheme to realize the purposes:

the utility model provides an improve lubricated axle bush structure, includes the axle bush body, axle bush body and bearing frame tight fit, the axle bush body is including the last main shaft tile of mutually supporting and lower main shaft tile, the bottom of lower main shaft tile is equipped with the oilhole, the oilhole runs through lower main shaft tile, the opposite both ends of the interior round surface of lower main shaft tile are equipped with the oil guide groove respectively.

Preferably, the depth of the oil guiding groove is set from deep to shallow along the direction of the oil hole.

Preferably, the width of the oil guiding groove gradually increases from the bottom to the top.

Preferably, a groove is formed in the bottom of the lower main shaft bushing, and the oil hole is located in the groove.

Preferably, the bearing seat is provided with an annular groove.

The beneficial effects of the utility model are as follows:

according to the bearing bush structure for improving lubrication, the oil guide groove and the oil hole are formed in the lower main bearing bush, so that the lubrication effect is good, and the bearing bush is not easy to cause the burning fault.

Drawings

FIG. 1 is a schematic view of a bearing shell structure for improved lubrication according to an embodiment of the present utility model;

fig. 2 is an assembly schematic diagram of a bearing shell structure with improved lubrication according to an embodiment of the present utility model.

In the drawing, a 1-bearing bush body, a 2-bearing seat, a 3-upper main shaft bush, a 4-lower main shaft bush, a 5-oil hole, a 6-oil guide groove and a 7-groove are formed.

Detailed Description

The present utility model will be described in detail with reference to fig. 1 to 2 and the detailed description.

Referring to fig. 1-2, the present embodiment provides a bearing bush structure with improved lubrication, which includes a bearing bush body 1, wherein the bearing bush body 1 is tightly matched with a bearing seat 2. The bearing bush body 1 comprises an upper main shaft bush 3 and a lower main shaft bush 4 which are matched with each other. The bottom of the lower main shaft bush 4 is provided with an oil hole 5, and the oil hole 5 penetrates through the lower main shaft bush 4. The opposite ends of the inner circular surface of the lower main shaft bush 4 are respectively provided with oil guide grooves 6.

When the bearing bush structure for improving lubrication works, lubricating oil flows to the inner surface of the lower main bearing bush 4 through the oil guide grooves 6 and the oil holes 5 at the two ends to lubricate, so that the occurrence of the bearing bush burning fault is prevented.

In the present embodiment, the depth of the oil guide groove 6 is set from deep to shallow in the direction of the oil hole 5. The width of the oil guide groove 6 gradually increases from the bottom to the top. The design can make the lubricating oil passing through the oil guide groove 6 more easily diffuse to the inner surface of the lower main shaft bushing 5, and the lubricating effect is better.

In this embodiment, a groove 7 is provided at the bottom of the lower spindle shoe 4, and the oil hole 5 is located in the groove 7. Specifically, the groove 7 does not penetrate through the design of the lower spindle shoe 4, so that a small part of lubricating oil is always remained in the groove 7, and the lubricating effect of the lower spindle shoe 4 is improved.

In the present embodiment, the bearing housing 2 is provided with an annular groove. The scheme is that an annular groove originally arranged on the inner circular surface of the lower main shaft bush 4 is actually arranged on the bearing seat 2 instead. The annular groove is arranged on the bearing seat 2 because the friction area of the bearing bush is increased when the annular groove is arranged on the inner circular surface of the lower main shaft bush 4.

During operation, lubricating oil flows to the inner surface of the lower main shaft bush 4 for lubrication through annular grooves on the bearing seat 2 through oil guide grooves 6 at two ends and oil holes 5 at the bottom. After the improved bearing bush structure is tested for more than 300 hours by an engine, no fault feedback is found, and the lubricating effect of the improved bearing bush structure is better.

In the embodiment, the outer diameter of the lower spindle bush 4 is 85mm, the inner diameter is 80mm, the thickness is 2.5mm, and the lip adopts a top-punching structure. The annular groove on the bearing seat 2 has a width of 2mm.

While the utility model has been described in detail with respect to specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the utility model and are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides an improve lubricated axle bush structure, includes the axle bush body, axle bush body and bearing frame tight fit, the axle bush body is including the last main shaft of mutually supporting and lower main shaft tile, its characterized in that, the bottom of lower main shaft tile is equipped with the oilhole, the oilhole runs through lower main shaft tile, the opposite both ends of the interior round surface of lower main shaft tile are equipped with the oil guide groove respectively.

2. A bearing bush structure for improving lubrication according to claim 1, wherein the depth of the oil guiding groove is set from deep to shallow in the direction of the oil hole.

3. A bearing shell structure for improved lubrication according to claim 1, wherein the width of the oil guiding groove is gradually increased from the bottom to the top.

4. The improved lubrication bushing structure of claim 1, wherein a groove is provided in a bottom of the lower main bushing, and the oil hole is located in the groove.

5. A bearing shell structure for improved lubrication according to claim 1, wherein the bearing housing is provided with an annular groove.