CN213954146U

CN213954146U - Crankshaft thrust plate

Info

Publication number: CN213954146U
Application number: CN202022404564.5U
Authority: CN
Inventors: 邓刚; 张定国; 史长平
Original assignee: Weichai Heavy Machinery Co Ltd; Chongqing Weichai Engine Co Ltd
Current assignee: Weichai Heavy Machinery Co Ltd; Chongqing Weichai Engine Co Ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-08-13
Anticipated expiration: 2030-10-26

Abstract

The utility model belongs to the field of diesel engines, and relates to a crankshaft thrust plate, which comprises two identical thrust plates arranged at two sides of a thrust gear, wherein the end surface of each thrust plate is limited by a main bearing cover to prevent the thrust plate from rotating; an arc-shaped oil passage is designed on the binding surface of the thrust plate and the machine body, and an oil passage for communicating the main oil passage to the arc-shaped oil passage is formed in the thrust gear; an oil distributing hole leading to the working surface of the thrust plate is formed in the arc-shaped oil passage; the thrust plate is attached to the crankshaft. The utility model discloses a draw oil to the arc oil duct on the thrust plate from organism main oil duct, through five oil distribution groove oil distributions to friction surface, play lubricated and cooling thrust surface's purpose, with semi-annular oil duct design on the thrust plate, not only can reduce the processing degree of difficulty of ring-opening oil duct on the organism thrust shelves, improve machining efficiency, can also practice thrift the processing cost by a wide margin, hold many.

Description

Crankshaft thrust plate

Technical Field

The utility model belongs to the diesel engine field relates to a crankshaft thrust piece.

Background

When the engine works, in order to prevent the axial movement of the crankshaft and ensure the stable and reliable operation of the engine, a thrust plate is required to be arranged between the crankshaft and the engine body to limit the axial clearance of the crankshaft. Most of the existing lubricating modes of the engine crankshaft thrust plate are splash lubrication, the lubricating mode cannot guarantee that lubricating oil is uniformly distributed on a thrust surface to form an effective oil film, heat generated by friction is not easy to take away quickly, quick abrasion of the thrust plate is easily caused, the axial clearance of the crankshaft is enlarged, the play amount is increased, and the reliability of the engine is finally influenced.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a crankshaft thrust piece reduces the friction between bent axle and thrust piece through pressure lubrication structure, extension thrust piece life.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the crankshaft thrust plate comprises two identical thrust plates arranged on two sides of a thrust gear, wherein the end faces of the thrust plates are limited through a main bearing cover to prevent the thrust plates from rotating; an arc-shaped oil passage is designed on the binding surface of the thrust plate and the machine body, and an oil passage for communicating the main oil passage to the arc-shaped oil passage is formed in the thrust gear; an oil distributing hole leading to the working surface of the thrust plate is formed in the arc-shaped oil passage; the thrust plate is attached to the crankshaft.

Optionally, the oil path includes a transverse oil passage communicated to the main oil passage, and an oblique oil passage for communicating the transverse oil passage to the arc-shaped oil passage.

Optionally, the thrust gear is further provided with an axial oil passage which connects the oblique oil passage to the side edge of the thrust plate.

Optionally, a plurality of oil distribution grooves extending in the radial direction of the arc oil passage are uniformly arranged on the working surface of the thrust plate.

Optionally, the oil distribution hole is arranged in the oil distribution groove.

Optionally, the oil distribution groove and the oil distribution holes are provided with 5.

Optionally, the arc oil passage is semi-annular.

Optionally, the thrust stop is provided with a step surface, and the step surface is matched with the excircle of the thrust plate.

The beneficial effects of the utility model reside in that:

the utility model discloses a draw oil to the arc oil duct on the thrust plate from organism main oil duct, through five oil distribution groove oil distributions to friction surface, play lubricated and cooling thrust surface's purpose, with semi-annular oil duct design on the thrust plate, not only can reduce the processing degree of difficulty of ring-opening oil duct on the organism thrust shelves, improve machining efficiency, can also practice thrift the processing cost by a wide margin, hold many.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

For the purposes of promoting a better understanding of the objects, features and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of the mounting position of a stopper;

FIG. 2 is a schematic diagram of the position of the oil path;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a schematic view of the structure of the contact surface of the stop piece and the body;

FIG. 5 is a schematic view of the construction of the working surface of the thrust plate;

fig. 6 is a sectional view B-B of fig. 5.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the features in the following embodiments and examples may be combined with each other without conflict.

Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in any way limiting the scope of the invention; for a better understanding of the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "left", "right", "front", "back", etc., indicating directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore, the terms describing the positional relationships in the drawings are only used for illustrative purposes and are not to be construed as limiting the present invention, and those skilled in the art can understand the specific meanings of the terms according to specific situations.

Referring to fig. 1-6, the reference numbers in the figures refer to the following elements: the thrust plate comprises a thrust plate 1, a thrust baffle 2, a main bearing cover 3, an oil distribution hole 4, an arc-shaped oil duct (semi-annular oil duct) 5, an end face 6, an oil distribution groove 7, a main oil duct 8, a transverse oil duct 9, an inclined oil duct 10 and an axial oil duct 11.

The utility model relates to a crankshaft thrust plate 1, which comprises two identical thrust plates 1 arranged at two sides of a thrust gear 2, wherein the end surface 6 of the thrust plate 1 is limited by a main bearing cover 3 to prevent the thrust plate from rotating; an arc-shaped oil duct 5 is designed on the binding surface of the thrust plate 1 and the machine body, and an oil way for communicating the main oil duct 8 to the arc-shaped oil duct 5 is arranged on the thrust baffle 2; an oil distributing hole 4 leading to the working surface of the thrust plate 1 is formed in the arc-shaped oil passage 5; the thrust plate 1 is attached to the crankshaft.

The oil path comprises a transverse oil passage 9 communicated to a main oil passage 8 and an oblique oil passage 10 used for communicating the transverse oil passage 9 to an arc-shaped oil passage 5; the thrust gear 2 is also provided with an axial oil passage 11 which connects the inclined oil passage 10 to the side edge of the thrust plate 1; a plurality of oil distribution grooves 7 which extend along the radial direction of the arc-shaped oil passage 5 are uniformly distributed on the working surface of the thrust plate 1; the oil distribution hole 4 is arranged in the oil distribution groove 7; the oil distribution groove 7 and the oil distribution holes 4 are respectively provided with 5 oil distribution holes; the arc-shaped oil duct 5 is semi-annular; the thrust baffle 2 is provided with a step surface, and the step surface is matched with the excircle of the thrust plate 1.

The thrust plate with the structure only comprises an upper thrust plate and a lower thrust plate, wherein the upper thrust plate and the lower thrust plate comprise two same thrust plates 1, the two same thrust plates are respectively arranged on two sides of a thrust gear 2 of an engine body, a semi-annular oil duct 5 surface is attached to the engine body, a step surface of the thrust gear 2 is matched with an outer circle of the thrust plate 1, the thrust plate 1 is limited through a main bearing cover 3, and the thrust plate 1 is prevented from rotating.

The lubrication mode of the thrust plate with the structure is as follows:

a semi-annular oil duct 5 is designed on the surface where a thrust plate 1 and a machine body are attached, a transverse oil duct 9, an oblique oil duct 10 and an axial oil duct 11 are drilled on a thrust gear 2 of the machine body, oil is led from a main oil duct 8 of the machine body to the semi-annular oil duct 5 of the thrust plate, five oil distribution grooves 7 are designed on the attachment surface of a crankshaft, the oil distribution grooves 7 are communicated with the semi-annular oil duct 5 through oil passing holes 4, a main bearing cap 3 is attached to the end surface 6 of the thrust plate, so that the semi-annular oil duct 5 is closed, and the pressure of the oil ducts is guaranteed. The semi-annular oil duct 5 on the thrust plate 1 is used for distributing oil to five oil distribution grooves 7, the oil distribution grooves 7 are used for distributing oil to the thrust surface to form an effective oil film, the purpose of lubricating the whole thrust surface is achieved, lubricating oil pressure can enable the lubricating oil to flow rapidly, heat generated by friction of the thrust surface is taken away, the effect of cooling the friction surface is achieved, and the purpose of prolonging the service life of the thrust plate is achieved.

Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the scope of the claims of the present invention.

Claims

1. The crankshaft thrust plate is characterized by comprising two identical thrust plates arranged on two sides of a thrust gear, wherein the end faces of the thrust plates are limited through a main bearing cover to prevent the thrust plates from rotating; an arc-shaped oil passage is designed on the binding surface of the thrust plate and the machine body, and an oil passage for communicating the main oil passage to the arc-shaped oil passage is formed in the thrust gear; an oil distributing hole leading to the working surface of the thrust plate is formed in the arc-shaped oil passage; the thrust plate is attached to the crankshaft.

2. The crankshaft thrust plate as set forth in claim 1, wherein said oil passage includes a lateral oil passage communicating to a main oil passage, and a slant oil passage for communicating said lateral oil passage to an arc-shaped oil passage.

3. The crankshaft thrust plate of claim 2 wherein said thrust stop further includes an axial oil passage connecting said angled oil passage to a side of said thrust plate.

4. The crankshaft thrust plate as set forth in claim 1, wherein a plurality of oil distribution grooves are uniformly arranged on a working surface of said thrust plate along a radial extension of said arc-shaped oil passage.

5. The crankshaft thrust plate of claim 4 wherein said oil distribution hole is disposed in said oil distribution groove.

6. The crankshaft thrust plate as claimed in claim 5, wherein there are 5 oil distribution grooves and 5 oil distribution holes.

7. The crankshaft thrust plate of claim 1 wherein said arcuate oil passage is semi-annular.

8. The crankshaft thrust plate of claim 1 wherein said thrust stop defines a step surface, said step surface engaging an outer circumference of said thrust plate.