CN220037246U

CN220037246U - Crankshaft thrust plate

Info

Publication number: CN220037246U
Application number: CN202321008694.4U
Authority: CN
Inventors: 吴宇; 魏红玲; 谢兴旺; 白林坡
Original assignee: Weichai Power Co Ltd
Current assignee: Weichai Power Co Ltd
Priority date: 2023-04-25
Filing date: 2023-04-25
Publication date: 2023-11-17
Anticipated expiration: 2033-04-25

Abstract

The utility model discloses a crankshaft thrust plate, which comprises an upper thrust plate and a lower thrust plate, wherein the upper thrust plate and the lower thrust plate have the same structure; an oil groove is formed in the upper thrust plate, and comprises a first rectangular groove, a second rectangular groove, a third rectangular groove and a trapezoid groove; the outer circle surface of one end of the upper thrust plate is provided with a positioning block, one end of the positioning block is provided with a semicircular groove, and the other end of the upper thrust plate is provided with a semicircular flange. The problem of thrust plate miscut can be solved, the wearing and tearing of effectual reduction thrust plate alloy layer, the suitability is strong, has improved lubricated effect, has increased life.

Description

Crankshaft thrust plate

Technical Field

The utility model belongs to the technical field of sliding contact bearings, and particularly relates to a crankshaft thrust plate.

Background

The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

The thrust plate is used as one of the sliding bearings of the engine, and mainly plays a role in axially supporting the crankshaft in the engine, so that the axial rotation of the crankshaft is ensured, and the axial movement of the crankshaft is prevented. When the crankshaft thrust plate is installed on the diesel engine, the situation that the upper thrust plate and the lower thrust plate are reversely installed or the steel back is replaced with the alloy layer and the like is possibly caused by unreasonable design of the thrust plate or carelessness of staff; moreover, the existing thrust plate is insufficient in oil storage capacity, is easy to wear due to poor lubrication, and is serious in wear, so that the service life of the thrust plate is reduced.

Disclosure of Invention

Aiming at the problems, the utility model provides the crankshaft thrust plate, which can solve the problem of wrong installation of the thrust plate, effectively reduce the abrasion of an alloy layer of the thrust plate, has strong applicability, improves the lubrication effect and prolongs the service life.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the crankshaft thrust plate comprises an upper thrust plate and a lower thrust plate, wherein the upper thrust plate and the lower thrust plate have the same structure; an oil groove is formed in the upper thrust plate, and comprises a first rectangular groove, a second rectangular groove, a third rectangular groove and a trapezoid groove; the outer circle surface of one end of the upper thrust plate is provided with a positioning block, one end of the positioning block is provided with a semicircular groove, and the other end of the upper thrust plate is provided with a semicircular flange.

Further, four oil grooves are formed in the upper thrust plate and are uniformly distributed, and two adjacent oil grooves are spaced at 45 degrees.

Further, the trapezoid grooves comprise a first trapezoid groove and a second trapezoid groove; the first rectangular groove is formed in one side of the outer circular surface of the upper thrust plate, the first trapezoid groove is formed in the lower portion of the first rectangular groove, and the second rectangular groove is formed in the lower portion of the first trapezoid groove.

Further, a second trapezoid groove is formed in the lower portion of the second rectangular groove, a third rectangular groove is formed in the lower portion of the second trapezoid groove, and the third rectangular groove is formed in one side of the inner circle of the upper thrust plate.

Further, the width of the first rectangular groove is smaller than that of the third rectangular groove; the width of the second rectangular groove is larger than that of the first rectangular groove and the third rectangular groove.

Further, the positioning block is a quarter round flange.

Further, the diameter of the semicircular groove is larger than that of the semicircular flange.

Further, the semicircular flange of the upper thrust plate is attached to the inner surface of the semicircular groove of the lower thrust plate.

Further, the semicircular flange of the lower thrust plate is attached to the inner surface of the semicircular groove of the upper thrust plate.

Further, at least one oil groove is arranged on the upper thrust plate and the lower thrust plate.

Compared with the prior art, the utility model has the advantages and positive effects that:

1. the utility model is provided with the semicircular groove, the semicircular flange and the positioning block, and the friction force between the upper thrust plate and the lower thrust plate is reduced through the circular structural design; after the assembly, the steel back layer is automatically attached to the machine body and the main bearing cover, and the alloy layer is automatically attached to the crankshaft thrust plate. Friction is reduced, and the service life of the thrust plate is prolonged; the anti-error device has an anti-error effect, and the upper thrust plate and the lower thrust plate with the same structure are designed, so that the types of parts are reduced, and the interchangeability is enhanced.

2. The utility model is provided with the oil groove, the opening of the cross section area of the third rectangular groove in the inner circle of the oil groove is larger than the cross section area of the first rectangular groove in the outer circle, when the engine oil works, engine oil enters from the large opening of the groove in the inner circle and flows out from the small opening of the groove in the outer circle, and is stored in the second rectangular groove with large volume and the two trapezoidal grooves. The splash engine oil can be quickly collected in the oil groove, and more engine oil can be stored; the resistance to the flow of the engine oil can also be increased, and the residence time of the engine oil in the oil groove can be prolonged. The lubrication effect is improved, the abrasion of the thrust plate alloy layer is reduced, and the service life of the thrust plate is prolonged.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a block diagram of a thrust plate of the present utility model;

FIG. 2 is a schematic view of the oil sump according to the present utility model;

FIG. 3 is an assembled view of a single side up and down thrust plate of the present utility model;

fig. 4 (a) and (b) are assembled views of the side thrust plate of the present utility model;

FIG. 5 is an assembly view of the present utility model;

fig. 6 (a) and (b) are conventional thrust plate structure diagrams;

in the figure: 1. thrust plate; 2. an oil groove; 3. a positioning block; 4. a semicircular groove; 5. a semicircular flange; 6. a first rectangular recess; 7. a second rectangular groove; 8. a third rectangular recess; 9. a trapezoidal groove; 10. a steel backing layer; 11. an alloy layer; 12. and a lower thrust plate.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;

for convenience of description, the words "upper", "lower", "left" and "right" in the present utility model, if they mean only the directions of upper, lower, left and right in correspondence with the drawings themselves, are not limiting in structure, but merely serve to facilitate description of the present utility model and simplify description, rather than to indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

The crankshaft thrust plate is used as one of the sliding bearings of the engine, and mainly plays a role in axially supporting the crankshaft in the engine, so that the axial movement of the crankshaft is prevented while the circumferential rotation of the crankshaft is ensured; the thrust plate is usually made of carbon steel as a substrate, and is prepared into a copper-based or aluminum-based bimetal composite plate through a sintering process, wherein the thickness of the bimetal composite plate is generally 2-5 mm; wherein, the alloy layer is thinner, the friction characteristic is excellent, and the back steel back is thick, the intensity is high. The oil groove is arranged on the alloy working surface of the thrust plate, so that the thrust plate and the crankshaft thrust surface can be fully lubricated, and abrasion is effectively prevented.

As shown in fig. 6 (a) and (b), an asymmetric crankshaft thrust plate in the prior art is shown, and two end surfaces of the upper plate and the lower plate which are paired in the crankshaft thrust plate are respectively made into asymmetric inclined surfaces, so that the characteristics of distinguishing front and back surfaces are remarkable. The upper thrust plate and the lower thrust plate have different structures, more parts and components, no interchangeability and higher stamping production complexity and cost; the oil storage tank is vertically oriented, so that the flowing resistance of engine oil in the tank is small, the oil storage amount is small, and the lubricating effect is general.

The present utility model will be described in detail with reference to the accompanying drawings, and a crankshaft thrust plate disclosed in this embodiment, as shown in fig. 1, includes an upper thrust plate 1 and a lower thrust plate 12, where the upper thrust plate 1 and the lower thrust plate 12 have the same structure; an oil groove 2 is formed in the upper thrust plate 1, and the oil groove 2 comprises a first rectangular groove 6, a second rectangular groove 7, a third rectangular groove 8 and a trapezoid groove 9; the outer circle surface of one end of the upper thrust plate 1 is provided with a positioning block 3, one end of the positioning block 3 is provided with a semicircular groove 4, and the other end of the upper thrust plate 1 is provided with a semicircular flange 5.

The utility model relates to a thrust plate with error-proofing function and a special oil groove 2 structure thereof. The thrust plate has two upper and lower plates respectively in diesel engine thrust shelves both sides, and four structures are the same, set up four oil grooves on the thrust plate, oil groove evenly distributed, two adjacent oil grooves interval 45.

The trapezoid groove 9 comprises a first trapezoid groove and a second trapezoid groove; the first rectangular groove 6 is arranged on one side of the outer circular surface of the upper thrust plate 1, a first trapezoid groove is arranged on the lower portion of the first rectangular groove 6, and a second rectangular groove 7 is arranged on the lower portion of the first trapezoid groove. The lower part of the second rectangular groove 7 is provided with a second trapezoid groove, the lower part of the second trapezoid groove is provided with a third rectangular groove 8, and the third rectangular groove 8 is arranged on one side of the inner circle of the upper thrust plate 1.

The width of the first rectangular groove 6 is smaller than that of the third rectangular groove 8; the width of the second rectangular groove 7 is larger than the width of the first rectangular groove 6 and the third rectangular groove 8.

Thrust plate automatic error proofing effect and principle: during installation, the upper thrust plate 1 is firstly clamped with a semicircular positioning groove on the cylinder body through the positioning block 3, and then the lower thrust plate 12 on the same side is installed through the clamping of the positioning block 3 with the semicircular positioning groove on the main bearing cover; the positioning grooves on the cylinder block are opposite to the positioning grooves on the main bearing cover, as shown in fig. 3, the grooves at the two ends of the upper thrust plate and the lower thrust plate on the same side are mutually combined with the flanges after the installation, and the circular design is utilized, so that the friction force between the upper thrust plate and the lower thrust plate is reduced, and the service life is prolonged; the installation method and principle of the upper and lower thrust plates on the other side are the same as those described above, as shown in fig. 5, the steel back layer 10 is attached to the cylinder block and the main bearing cap after the installation, the alloy layer 11 is attached to the crankshaft thrust surface, and the design ensures that the automatic error-proofing function is still provided on the premise that the upper and lower thrust plates have the same structure.

Design special structure oil groove effect and principle: the opening of the cross section area of the third rectangular groove 8 in the oil groove 2 is larger than that of the first rectangular groove 6 in the outer circle, and when the engine oil works, engine oil enters from the large opening of the groove in the inner circle and flows out from the small opening of the groove in the outer circle, and is stored in the second rectangular groove 7 with large volume and the two trapezoidal grooves.

The positioning block 3 is a quarter round flange. The diameter of the semicircular groove 4 is larger than the diameter of the semicircular flange 5. The semicircular flange of the upper thrust plate 1 is attached to the inner surface of the semicircular groove of the lower thrust plate 12. The semicircular flange of the lower thrust plate 12 is attached to the inner surface of the semicircular groove of the upper thrust plate 1. At least one oil groove is arranged on the upper thrust plate 1 and the lower thrust plate 12.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims

1. The crankshaft thrust plate is characterized by comprising an upper thrust plate and a lower thrust plate, wherein the upper thrust plate and the lower thrust plate have the same structure; an oil groove is formed in the upper thrust plate, and comprises a first rectangular groove, a second rectangular groove, a third rectangular groove and a trapezoid groove; the outer circle surface of one end of the upper thrust plate is provided with a positioning block, one end of the positioning block is provided with a semicircular groove, and the other end of the upper thrust plate is provided with a semicircular flange.

2. A crankshaft thrust plate as in claim 1 wherein four grooves are provided in said upper thrust plate, the grooves being evenly spaced and two adjacent grooves being spaced 45 ° apart.

3. A crankshaft thrust plate as in claim 1, wherein said trapezoidal recess comprises a first trapezoidal recess and a second trapezoidal recess; the first rectangular groove is formed in one side of the outer circular surface of the upper thrust plate, the first trapezoid groove is formed in the lower portion of the first rectangular groove, and the second rectangular groove is formed in the lower portion of the first trapezoid groove.

4. A crankshaft thrust plate as claimed in claim 3, wherein a second trapezoidal recess is provided in a lower portion of the second rectangular recess, and a third rectangular recess is provided in a lower portion of the second trapezoidal recess, the third rectangular recess being provided on one side of an inner circumference of the upper thrust plate.

5. A crankshaft thrust plate as in claim 1, wherein the first rectangular recess has a width less than a width of the third rectangular recess; the width of the second rectangular groove is larger than that of the first rectangular groove and the third rectangular groove.

6. A crankshaft thrust plate as in claim 1, wherein said locating block is a quarter circular flange.

7. A crankshaft thrust plate as in claim 1, wherein said semi-circular recess has a diameter greater than a diameter of the semi-circular flange.

8. A crankshaft thrust plate as in claim 1, wherein the semicircular flange of the upper thrust plate engages the inner surface of the semicircular recess of the lower thrust plate.

9. A crankshaft thrust plate as in claim 1, wherein the semicircular flange of the lower thrust plate engages the inner surface of the semicircular recess of the upper thrust plate.

10. A crankshaft thrust plate as in claim 1, wherein said upper thrust plate and said lower thrust plate are provided with at least one oil groove.