Crankshaft thrust plate

Abstract

The utility model discloses a crankshaft thrust plate, which is characterized in that the crankshaft thrust plate is used for supporting a crankshaft and is arranged on a cylinder body and two sides of a thrust bearing cover; wherein the thrust bearing cover is installed on a cylinder body, a groove used for installing the crankshaft thrust plate is formed in the thrust bearing cover, a semicircular hole is formed in the side, close to the cylinder body, of the thrust bearing cover, and the semicircular hole is used for avoiding a crankshaft. The crankshaft thrust plates are symmetrically arranged on the two sides of the thrust plate bearing and the two sides of the air cylinder body connected with the thrust bearing cover. Comprising a thrust plate body, the shape of the thrust plate body is matched with that of the thrust bearing cap, one side of the thrust plate body is used for being fixed to the thrust bearing cap and the air cylinder body, and a plurality of oil channels are formed in the other side of the thrust plate body. When engine oil flows through, a wedge effect is generated. And the crankshaft is reversely pushed by engine oil through the wedge effect, so that the crankshaft and the thrust plate are not in complete contact, and the crankshaft and the thrust plate are protected against excessive mutual friction.

Description

Technical Field

[0001] The utility model relates to the field of engine equipment, in particular to a crankshaft thrust plate. Background Art

[0002] In the traditional engine structure, the crankshaft is offset when subjected to axial force. A thrust plate is arranged between the crankshaft and the thrust main bearing cover to withstand the friction caused by the axial force on the crankshaft and the rotation and extrusion of the crankshaft. Since it is in direct contact with the crankshaft (moving parts), lubrication is required between the two to reduce friction and take away friction heat.

[0003] Conventional thrust plates are provided with oil reservoirs to store engine oil, which is used to establish an oil film between the thrust plate and the crankshaft when the engine is started for the second time to protect lubrication. However, in hybrid vehicles, due to frequent starts, there is still a situation where the thrust force acts on the crankshaft for a long time. Frequent starts and long-term bearing of the clutch separation force require the rapid formation of an oil film to protect the crankshaft and thrust plate and withstand the thrust force for a long time. Conventional thrust plates establish a slow oil film and cannot withstand the thrust force for a long time.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0005] The utility model aims to provide a crankshaft thrust plate which can form a uniform oil film between the crankshaft and the thrust plate more quickly.

[0006] To achieve the above-mentioned purpose, the utility model provides a crankshaft thrust plate, environment: the crankshaft thrust plate is used for supporting the crankshaft, and is installed on the cylinder block and on both sides of the thrust bearing cover; wherein, the thrust bearing cover is installed on the cylinder block, and the thrust bearing cover is provided with a groove for installing the crankshaft thrust plate, and the thrust bearing cover is provided with a semicircular hole on one side close to the cylinder block, and the semicircular hole is used to avoid the crankshaft, and the crankshaft thrust plate is symmetrically arranged on both sides of the thrust plate bearing and the cylinder block connected to the thrust bearing cover; it includes: a thrust plate body, the shape of the thrust plate body is adapted to the thrust bearing cover, one side of the thrust plate body is used to be fixed on the thrust bearing cover and the cylinder block, and the other side is provided with multiple oil channels.

[0007] In one or more embodiments, the thrust plate body is a semicircular ring structure, and the inner diameter of the semicircular ring structure is larger than the inner diameter of the semicircular hole of the thrust bearing cover.

[0008] In one or more embodiments, the oil passage is in the shape of an elongated strip, passes through both sides of the inner ring and the outer ring of the semicircular thrust plate body, and is perpendicular to the inner ring and the outer ring of the thrust plate body.

[0009] In one or more embodiments, the oil passage is a first wedge-shaped structure, which is composed of a falling surface and a splashing surface. The angle between the falling surface and the splashing surface is an acute angle. The angle formed between the falling surface and the top surface of the thrust plate body is α, and the angle formed between the splashing surface and the top surface of the thrust plate body is β. The angle α is smaller than the angle β.

[0010] In one or more embodiments, a guide surface is provided between the falling surface and the top surface of the thrust plate body, and the guide surface is used to guide the direction of the oil droplets to prevent the oil droplets from splashing around when falling into the splashing surface.

[0011] In one or more embodiments, the angle α is a right angle, and the angle β is an obtuse angle.

[0012] In one or more embodiments, the plurality of oil passages are evenly distributed along the circumference of one side of the thrust plate body, and the plurality of first wedge-shaped structures have the same shape and are oriented in the same direction.

[0013] In one or more embodiments, the two ends of the thrust plate body are second wedge-shaped structures with inclined surfaces facing upward.

[0014] In one or more embodiments, the bottom of the first wedge-shaped structure is located at 1 / 2 of the thickness of the thrust plate body.

[0015] In one or more embodiments, a side of the thrust plate body close to the thrust bearing cover is a planar structure.

[0016] Compared with the prior art, the utility model provides a crankshaft thrust plate, which has the following beneficial effects:

[0017] A multi-channel wedge-shaped oil channel structure is designed on the surface of the crankshaft thrust plate, so that a wedge effect is generated when the oil flows through. When the engine starts, the crankshaft rotates at high speed, the oil pump starts working, and when the oil flows to the thrust plate, the oil flows down from the oil channel. Since the crankshaft and the thrust plate are in contact and the crankshaft rotates at high speed, a part of the oil will rotate with the crankshaft, and the oil will be brought to other parts of the thrust plate for lubrication, forming a uniform oil film between the crankshaft and the thrust plate more quickly. At the same time, the excess oil flowing through will also take away the friction heat generated between the crankshaft thrust surface and the thrust plate. The wedge effect makes the oil push back the crankshaft, which can prevent the crankshaft and the thrust plate from being incompletely in contact, thereby protecting the two from excessive mutual friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a thrust plate in the prior art provided in the embodiment of the utility model.

[0019] Figure 2 It is a structural diagram of a crankshaft thrust plate provided in an embodiment of the utility model.

[0020] Figure 3 It is a cross-sectional view of an oil channel provided in an embodiment of the utility model.

[0021] Figure 4 It is a cross-sectional view of another oil passage provided in an embodiment of the utility model.

[0022] Figure 5 It is a principle diagram of a crankshaft thrust plate provided in an embodiment of the utility model.

[0023] Description of main reference numerals:

[0024] 1-thrust plate body, 2-oil channel, 21-falling surface, 22-splashing surface, 23-guide surface. DETAILED DESCRIPTION

[0025] The specific implementation modes of the present invention are described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific implementation modes.

[0026] Unless explicitly stated otherwise, throughout the specification and claims, the term “comprise” or variations such as “include” or “comprising”, etc., will be understood to include the stated elements or components but not to exclude other elements or components.

[0027] Invention concept: Figure 1 It is a conventional thrust plate structure. There are two oil reservoirs on the thrust plate to store engine oil, which is used to establish an oil film between the thrust plate and the crankshaft when the engine is started for the second time to protect lubrication. However, in hybrid vehicles, due to frequent starts, there is still a situation where the thrust force acts on the crankshaft for a long time. Frequent starts and long-term clutch separation force require the rapid formation of an oil film to protect the crankshaft and thrust plate and withstand the thrust force for a long time. Figure 2 The utility model provides a crankshaft thrust plate. A multi-channel wedge-shaped oil channel structure is designed on the surface of the thrust plate, so that when the oil flows through, a wedge effect is generated (the effect of a fluid with a certain viscosity flowing into a wedge-shaped convergent gap and generating pressure is called the wedge effect of fluid dynamic lubrication). The specific principle is as follows Figure 5 As shown (the text in the attached figure is for illustration only); Figure 3It is a cross-sectional view of a wedge-shaped structure. The arrow indicates the direction of the oil. When the engine starts, the oil pump starts working, and the oil flows to the thrust plate, the oil flows down from the oil channel. Since the crankshaft and the thrust plate are in contact and the crankshaft rotates at high speed, part of the oil will rotate with the crankshaft, bringing the oil to other parts of the thrust plate for lubrication, forming a uniform oil film between the crankshaft and the thrust plate more quickly. At the same time, the excess oil will also take away the friction heat generated between the crankshaft thrust surface and the thrust plate. The wedge effect makes the oil push back the crankshaft, which can prevent the crankshaft and the thrust plate from being incompletely in contact, thereby protecting the two from excessive mutual friction.

[0028] A crankshaft thrust plate, such as Figures 2 to 4 As shown, the environment: the crankshaft thrust plate is used for supporting the crankshaft and is installed on the cylinder block and on both sides of the thrust bearing cover; wherein the thrust bearing cover is installed on the cylinder block, and the thrust bearing cover is provided with a groove for installing the crankshaft thrust plate, and the thrust bearing cover is provided with a semicircular hole on the side close to the cylinder block, and the semicircular hole is used to avoid the crankshaft, and the crankshaft thrust plate is symmetrically arranged on both sides of the thrust plate bearing and the cylinder block connected to the thrust bearing cover; it includes: a thrust plate body 1, the shape of the thrust plate body 1 is adapted to the thrust bearing cover, one side of the thrust plate body 1 is used to be fixed on the thrust bearing cover and the cylinder block, and the other side is provided with multiple oil channels 2.

[0029] Specifically, a semicircular hole matching the semicircular hole of the thrust bearing cap is arranged at the edge of the cylinder body, the thrust bearing cap is mounted on the cylinder body, the semicircular hole on the thrust bearing cap and the semicircular hole on the cylinder body are combined into a complete circular through hole, and the circular through hole is used to avoid the crankshaft. The crankshaft thrust plate is symmetrically mounted on the front and rear sides of the semicircular hole structure of the thrust bearing cap and the cylinder body, and the front and rear sides refer to the two sides penetrated by the semicircular hole.

[0030] As an optional implementation, the thrust plate body 1 is a semicircular ring structure, and the inner diameter of the semicircular ring structure is larger than the inner diameter of the semicircular hole of the thrust bearing cover.

[0031] Specifically, the center of the thrust plate body 1 of the semicircular ring structure coincides with the center of the semicircular hole provided on the thrust bearing cover, and the radius of the semicircular hole is smaller than the inner diameter of the semicircular ring structure. As a preferred embodiment, the thrust plate body 1 is a semicircular ring structure. As another preferred embodiment, the thrust plate body 1 can also be a complete circular ring structure. When the thrust bearing cover and the semicircular hole on the cylinder body are assembled into a complete circle, the thrust plate body 1 is directly mounted on the assembled structure.

[0032] As an optional implementation, the oil passage 2 is in the shape of an elongated strip, and the oil passage 2 runs through both sides of the inner ring and the outer ring of the semicircular thrust plate body 1 , and is perpendicular to the inner ring and the outer ring of the thrust plate body 1 .

[0033] Specifically, the oil passage 2 runs through both sides of the inner ring and the outer ring of the semicircular annular thrust plate body 1, and is perpendicular to the inner ring and the outer ring of the thrust plate body 1, that is, the oil passage 2 coincides with the diameter of the semicircular annular structure. Since the crankshaft is installed in the semicircular hole, and the axis and the center of the semicircular annular structure are basically coincident, when the crankshaft rotates at a high speed, the engine oil is brought to the thrust plate body 1 by the high-speed crankshaft, that is, the oil passage 2 should be arranged perpendicular to the inner ring and the outer ring, so that the engine oil in the direction perpendicular to the oil passage 2 can have the fastest component speed, and the wedge effect produced is more obvious.

[0034] As an optional embodiment, the oil channel 2 is a first wedge-shaped structure, which is composed of a falling surface 21 and a splashing surface 22. The falling surface 21 and the splashing surface 22 have an acute angle. The angle formed between the falling surface 21 and the top surface of the thrust plate body 1 is α, and the angle formed between the splashing surface and the top surface of the thrust plate body 1 is β. The angle α is smaller than the angle β.

[0035] Specifically, the angle α is smaller than the angle β, so that the splashing surface 22 has a gentler slope relative to the falling surface 21, that is, the direction of oil inflow converges in a wedge shape, so that when the oil flows through, a wedge effect is generated, causing the oil to push back on the crankshaft, allowing incomplete contact between the crankshaft and the thrust plate, thereby protecting the two from excessive mutual friction.

[0036] As an optional embodiment, a guide surface 23 is provided between the falling surface 21 and the top surface of the thrust plate body 1 , and the guide surface 23 is used to guide the direction of the oil droplets to prevent the oil droplets from splashing around when falling into the splashing surface 22 .

[0037] Specifically, the guide surface 23 is used to guide the direction of the oil droplets to prevent them from flowing down along the falling surface 21 or splashing in other directions when they fall into the splashing surface 22. As a preferred embodiment, the guide surface 23 forms an obtuse angle with the splashing surface 22, and is used to guide the oil droplets to fall at an acute angle with the splashing surface 22, thereby changing the direction of movement of the force and maintaining the forward kinetic energy of the oil droplets to the greatest extent.

[0038] As an optional implementation, the angle α is a right angle, and the angle β is an obtuse angle.

[0039] Specifically, at this angle, the oil channel 2 has the best effect on the formation of the wedge effect and the formation of the oil film.

[0040] As an optional implementation, the plurality of oil passages 2 are evenly distributed along the circumference of one side of the thrust plate body 1, and the plurality of first wedge-shaped structures have the same shape and are oriented in the same direction.

[0041] Specifically, the plurality of oil passages 2 are evenly arranged, have the same shape, and are in the same direction, so that the thickness of the oil film formed between the crankshaft and the thrust plate at different positions is uniform. As a preferred embodiment, the number of the oil passages 2 is 4, and the interval between two adjacent oil passages 2 is 36°. The same shape means that the angle α, the angle β, and the depth of the plurality of wedge-shaped structures are the same. The same direction means that the relative directions of the plurality of falling surfaces 21 are consistent, and the relative directions of the plurality of sputtering surfaces 22 are consistent.

[0042] As an optional implementation, the two end portions of the thrust plate body 1 are second wedge-shaped structures with inclined surfaces facing upward.

[0043] Specifically, since it is difficult to set the oil passages 2 at both ends of the thrust plate body 1, the second wedge-shaped structure provided on the thrust plate body 1 is the same as the oil passages 2, so that the oil droplets flow down along the second wedge-shaped structure.

[0044] As an optional implementation, the bottom of the first wedge-shaped structure is located at 1 / 2 of the thickness of the thrust plate body 1 .

[0045] Specifically, if the bottom position of the first wedge-shaped structure is too high, the oil passage 2 is not deep enough, the oil flow is small, and an effective cooling effect cannot be achieved. If the bottom position of the first wedge-shaped structure is too low, the crankshaft thrust plate is not structurally stable enough and is prone to breakage.

[0046] As an optional implementation, a side of the thrust plate body 1 close to the thrust bearing cover is a planar structure.

[0047] Specifically, the side of the thrust plate body 1 that contacts the thrust bearing cover is flat, has no oil passage 2, and is adapted to the smooth groove structure on the top of the thrust bearing cover. Pins are symmetrically arranged on the thrust bearing cover to clamp the crankshaft thrust plate.

[0048] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A crankshaft thrust plate, characterized in that: Environment: The crankshaft thrust plate is used to support the crankshaft and is installed on the cylinder block and on both sides of the thrust bearing cover; wherein the thrust bearing cover is installed on the cylinder block, the thrust bearing cover is provided with a groove for installing the crankshaft thrust plate, the thrust bearing cover is provided with a semicircular hole on one side close to the cylinder block, the semicircular hole is used to avoid the crankshaft, and the crankshaft thrust plate is symmetrically arranged on both sides of the thrust plate bearing and the cylinder block connected to the thrust bearing cover; It comprises: a thrust plate body, the shape of which is adapted to the thrust bearing cover, one side of which is used to be fixed on the thrust bearing cover and the cylinder body, and the other side of which is provided with a plurality of oil passages.

2. The crankshaft thrust plate according to claim 1, characterized in that: The thrust plate body is a semicircular ring structure, and the inner diameter of the semicircular ring structure is larger than the inner diameter of the semicircular hole of the thrust bearing cover.

3. The crankshaft thrust plate according to claim 2, characterized in that: The oil passage is in the shape of an elongated strip, passes through both sides of the inner ring and the outer ring of the thrust plate body, and is perpendicular to the inner ring and the outer ring of the thrust plate body.

4. The crankshaft thrust plate according to claim 1, characterized in that: The oil passage is a first wedge-shaped structure, which is composed of a falling surface and a splashing surface. The angle between the falling surface and the splashing surface is an acute angle. The angle formed between the falling surface and the top surface of the thrust plate body is α, and the angle formed between the splashing surface and the top surface of the thrust plate body is β. The angle α is smaller than the angle β.

5. The crankshaft thrust plate according to claim 4, characterized in that: A guiding surface is provided between the falling surface and the top surface of the thrust plate body, and the guiding surface is used to guide the direction of the oil droplets to prevent the oil droplets from splashing around when falling into the splashing surface.

6. The crankshaft thrust plate according to claim 4, characterized in that: The angle α is a right angle, and the angle β is an obtuse angle.

7. The crankshaft thrust plate according to claim 4, characterized in that: The plurality of oil passages are evenly distributed along the circumference of one side of the thrust plate body, and the plurality of first wedge-shaped structures have the same shape and the same orientation.

8. The crankshaft thrust plate according to claim 1, characterized in that: The two end portions of the thrust plate body are second wedge-shaped structures with inclined surfaces facing upwards.

9. The crankshaft thrust plate according to claim 4, characterized in that: The bottom of the first wedge-shaped structure is located at 1 / 2 of the thickness of the thrust plate body.

10. The crankshaft thrust plate according to claim 1, characterized in that: The side of the thrust plate body close to the thrust bearing cover is a planar structure.

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