Crankshaft thrust plate with unilateral thinned oil groove structure

Abstract

The utility model discloses a crankshaft thrust plate with a unilateral thinned oil groove structure, and relates to the field of automobile accessories. The crankshaft thrust plate with the single-side thinning oil groove structure comprises a crankshaft thrust plate base body, an ultramicro single-side thinning surface and a trapezoidal oil groove, the crankshaft thrust plate base body is arranged to be in a semi-arc shape and installed on the outer side of a crankshaft, the ultramicro single-side thinning surface and the trapezoidal oil groove are selectively formed in one side of the crankshaft thrust plate base body, and the trapezoidal oil groove is formed in the other side of the crankshaft thrust plate base body. And the trapezoidal oil grooves are communicated with the ultra-micro single-side thinned surface. According to the crankshaft thrust plate with the unilateral thinned oil groove structure, the unilateral ultramicro unilateral thinned surface guides lubricating oil to flow directionally, a continuous oil film is formed in the operation process, the bearing capacity of the oil film is enhanced, and abrasion is reduced; the inclination angle of the ultramicro unilateral thinned surface is consistent with the rotation direction to form a wedge-shaped effect, and lubricating oil is pressed into a friction pair gap to form a dynamic oil film.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically to a crankshaft thrust washer with a single-sided thinned oil groove structure. Background Technology

[0002] Crankshaft thrust washers, as sliding bearings in engines, limit axial displacement of the crankshaft, preventing it from surging due to axial pressure and protecting critical components such as the crankshaft and bearing shells for stable operation. They also store lubricating oil in oil grooves, forming an oil film between the crankshaft and the thrust washers to reduce friction and wear, while simultaneously adjusting the crankshaft axial clearance. Traditional crankshaft thrust washers typically have symmetrically thinned oil grooves to store lubricating oil, but this design has the following problems:

[0003] The symmetrical structure weakens the load-bearing area of ​​the crankshaft thrust plate and reduces the structural strength;

[0004] Insufficient chip removal capacity of the oil tank can easily lead to wear due to the accumulation of metal chips.

[0005] However, under unilateral rotation conditions, symmetrical structures may experience increased temperature rise or wear due to oil backflow, uneven distribution of lubricating oil, and insufficient lubrication in some areas.

[0006] Therefore, the present invention provides a crankshaft thrust plate with a single-sided thinned oil groove structure, which optimizes the flow direction of lubricating oil through asymmetric oil groove design, enhances the lubrication effect, and improves the wear resistance. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a crankshaft thrust plate with a single-sided thinned oil groove structure, which solves the problem that traditional crankshaft thrust plates may experience increased temperature rise or wear due to uneven lubrication distribution caused by oil backflow and insufficient lubrication in some areas under single-sided rotation conditions.

[0008] To achieve the above objectives, this utility model provides the following technical solution: a crankshaft thrust washer with a single-sided thinned oil groove structure, comprising:

[0009] A crankshaft thrust plate base, wherein the crankshaft thrust plate base is configured as a semi-arc shape and is installed on the outside of the crankshaft;

[0010] The ultra-micro single-sided thinning surface can be selectively formed on one side of the crankshaft thrust plate substrate;

[0011] The trapezoidal oil groove can be selectively located on one side of the crankshaft thrust plate substrate, and the trapezoidal oil groove is connected to the ultra-micro single-sided thinning surface.

[0012] Preferably, the end of the crankshaft thrust plate substrate is provided with an anti-misalignment structure. The anti-misalignment structure is used to limit the installation position of the crankshaft thrust plate substrate and the crankshaft, and the anti-misalignment structure is assembled to ensure that the ultra-micro single-sided thinning surface is consistent with the rotation direction of the crankshaft.

[0013] Preferably, the tilt direction of the ultra-micro single-sided thinning surface is consistent with the crankshaft rotation direction, and the tilt angle α of the ultra-micro single-sided thinning surface is set to 0.1°-3°.

[0014] Preferably, the trapezoidal oil groove has an isosceles trapezoidal cross-section, with the upper base W1 set to 5.7mm, the lower base W2 set to 3mm, and the depth H0 set to 0.83mm.

[0015] Preferably, the crankshaft thrust plate substrate is a composite substrate formed by rolling an alloy layer and a steel layer together.

[0016] Preferably, the steel layer is cold-rolled low-carbon steel SAE1010, the alloy layer composition is AlSn6Si2.5MnNi, and the alloy thickness is 0.2-0.4 mm.

[0017] This utility model discloses a crankshaft thrust washer with a single-sided thinned oil groove structure, which has the following beneficial effects:

[0018] 1. The crankshaft thrust washer with this single-sided thinned oil groove structure guides the directional flow of lubricating oil through its ultra-micro thinned surface on one side, forming a continuous oil film during operation. This enhances the oil film's load-bearing capacity and reduces wear. When the crankshaft rotates, the lubricating oil enters the ultra-micro thinned surface through the trapezoidal oil groove. The inclination angle of the ultra-micro thinned surface is consistent with the direction of rotation, creating a wedge effect that forces the lubricating oil into the friction pair gap, forming a dynamic oil film. The oil film pressure distribution is uniform, reducing direct contact and lowering the coefficient of friction.

[0019] 2. The crankshaft thrust plate with this single-sided thinned oil groove structure features an isosceles trapezoidal oil groove with an upper base W1=5.7mm, a lower base W2=3mm, and a depth H0=0.83mm, enhancing oil film rigidity and preventing lubricant loss. The trapezoidal oil groove is connected to the ultra-micro single-sided thinned surface, ensuring uniform pressure distribution of the lubricant during rotation, covering the entire friction surface. The asymmetrical locating tongue or locating pin hole design ensures unidirectional installation only, a physical error-proofing mechanism that improves assembly efficiency and reduces the failure rate. The alloy layer AlSn6Si2.5MnNi, with a thickness of 0.2–0.4mm, offers 50% better wear resistance than traditional copper-based materials. The cold-rolled low-carbon steel SAE1010 substrate provides structural support, adapting to extreme operating conditions. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a partial structural diagram of the present invention.

[0023] In the figure: 1. Crankshaft thrust plate substrate; 2. Ultra-micro single-sided thinning surface; 3. Trapezoidal oil groove; 4. Anti-misalignment structure. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] This application provides a crankshaft thrust plate with a single-sided thinned oil groove structure, which solves the problem that traditional crankshaft thrust plates may experience increased temperature rise or wear due to uneven lubrication distribution caused by oil backflow and insufficient lubrication in some areas under single-sided rotation conditions.

[0026] The single-sided ultra-micro thinning surface 2 guides the directional flow of lubricating oil, forming a continuous oil film during operation. This enhances the oil film's load-bearing capacity and reduces wear. When the crankshaft rotates, the lubricating oil enters the ultra-micro single-sided thinning surface 2 through the trapezoidal oil groove 3. The inclination angle of the ultra-micro single-sided thinning surface 2 is consistent with the rotation direction, creating a wedge effect that forces the lubricating oil into the friction pair gap, forming a dynamic oil film. The oil film pressure distribution is uniform, reducing direct contact and lowering the coefficient of friction.

[0027] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0028] This utility model discloses a crankshaft thrust plate with a single-sided thinned oil groove structure.

[0029] According to the appendix Figure 1-2 As shown, it includes:

[0030] Crankshaft thrust plate base 1, the crankshaft thrust plate base 1 is set in a semi-arc shape and installed on the outside of the crankshaft;

[0031] The ultra-micro single-sided thinning surface 2 can be selectively formed on one side of the crankshaft thrust plate substrate 1;

[0032] The trapezoidal oil groove 3 can be selectively located on one side of the crankshaft thrust plate substrate 1, and the trapezoidal oil groove 3 is connected to the ultra-micro single-sided thinning surface 2.

[0033] The single-sided ultra-micro single-sided thinning surface 2 guides the directional flow of lubricating oil, forming a continuous oil film during operation. This enhances the oil film's load-bearing capacity and reduces wear. When the crankshaft rotates, the lubricating oil enters the ultra-micro single-sided thinning surface 2 through the trapezoidal oil groove 3. The inclination angle of the ultra-micro single-sided thinning surface 2 is consistent with the rotation direction, creating a wedge effect that forces the lubricating oil into the friction pair gap, forming a dynamic oil film. The oil film pressure distribution is uniform, reducing direct contact and lowering the coefficient of friction.

[0034] Furthermore, the crankshaft thrust plate substrate 1 is provided with an anti-misalignment structure 4 at its end. The anti-misalignment structure 4 is used to limit the installation position of the crankshaft thrust plate substrate 1 and the crankshaft, and the anti-misalignment structure 4 is assembled to ensure that the ultra-micro single-sided thinning surface 2 is consistent with the rotation direction of the crankshaft.

[0035] Furthermore, the tilt direction of the ultra-micro single-sided thinning surface 2 is consistent with the crankshaft rotation direction, and the tilt angle α of the ultra-micro single-sided thinning surface 2 is set to 0.1°-3°.

[0036] Furthermore, the cross-section of the trapezoidal oil tank 3 is an isosceles trapezoid, with the upper base W1 set to 5.7mm, the lower base W2 set to 3mm, and the depth H0 set to 0.83mm.

[0037] Furthermore, the crankshaft thrust plate substrate 1 is configured as a composite substrate formed by rolling an alloy layer and a steel layer.

[0038] Furthermore, the steel layer is cold-rolled low-carbon steel SAE1010, and the alloy layer composition is AlSn6Si2.5MnNi, with an alloy thickness of 0.2–0.4 mm.

[0039] The trapezoidal oil groove 3 adopts an isosceles trapezoidal structure with an upper base W1=5.7mm, a lower base W2=3mm, and a depth H0=0.83mm, enhancing oil film rigidity and preventing lubricant loss. The trapezoidal oil groove 3 is connected to the ultra-micro single-sided thinning surface 2, ensuring a uniform pressure distribution of the lubricant during rotation, covering the entire friction surface. The asymmetrical positioning tongue or positioning pin hole design ensures unidirectional installation only; this physical error-proofing mechanism improves assembly efficiency and reduces the failure rate. The alloy layer AlSn6Si2.5MnNi, with a thickness of 0.2–0.4mm, offers 50% better wear resistance than traditional copper-based materials. The cold-rolled low-carbon steel SAE1010 substrate provides structural support, adapting to extreme working conditions.

[0040] Working principle:

[0041] When the crankshaft rotates, the lubricating oil enters the ultra-micro single-sided thinning surface 2 through the trapezoidal oil groove 3.

[0042] The tilt angle α of the ultra-micro single-sided thinning surface 2 forms a wedge effect, which presses the lubricating oil into the friction pair gap and forms a dynamic oil film.

[0043] The oil film pressure is evenly distributed, reducing direct contact and lowering the coefficient of friction.

[0044] The error-proof structure 4 ensures that the crankshaft thrust plate base 1 can only be installed in one direction through an asymmetrical design.

[0045] After installation, the ultra-micro single-sided thinning surface 2 automatically aligns with the crankshaft rotation direction, ensuring that the lubricating oil film always covers the friction surface.

[0046] The alloy layer provides a low-friction, highly wear-resistant surface, while the steel layer provides structural strength.

[0047] The rolling composite process ensures the interfacial bonding strength and adapts to high-load conditions.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A crankshaft thrust washer with a single-sided thinned oil groove structure, characterized in that, include: Crankshaft thrust plate base (1), wherein the crankshaft thrust plate base (1) is configured as a semi-arc shape and is installed on the outside of the crankshaft; The ultra-micro single-sided thinning surface (2) can be selectively opened on one side of the crankshaft thrust plate substrate (1); Trapezoidal oil groove (3) can be selectively opened on one side of crankshaft thrust plate substrate (1), and the trapezoidal oil groove (3) is connected to the ultra-micro single-sided thinning surface (2).

2. The crankshaft thrust washer with a single-sided thinned oil groove structure according to claim 1, characterized in that, The crankshaft thrust plate base (1) is provided with an anti-misalignment structure (4) at its end, which is used to limit the installation position of the crankshaft thrust plate base (1) and the crankshaft.

3. The crankshaft thrust washer with a single-sided thinned oil groove structure according to claim 1, characterized in that, The tilt direction of the ultra-micro single-sided thinning surface (2) is consistent with the crankshaft rotation direction, and the tilt angle α of the ultra-micro single-sided thinning surface (2) is set to 0.1°-3°.

4. The crankshaft thrust washer with a single-sided thinned oil groove structure according to claim 1, characterized in that, The trapezoidal oil groove (3) has an isosceles trapezoidal cross section, with the upper base W1 set to 5.7mm, the lower base W2 set to 3mm, and the depth H0 set to 0.83mm.

5. A crankshaft thrust washer with a single-sided thinned oil groove structure according to claim 4, characterized in that, The crankshaft thrust plate substrate (1) is configured as a composite substrate formed by rolling an alloy layer and a steel layer.

6. The crankshaft thrust washer with a single-sided thinned oil groove structure according to claim 5, characterized in that, The steel layer is cold-rolled low-carbon steel SAE1010, and the alloy layer composition is AlSn6Si2.5MnNi with an alloy thickness of 0.2–0.4 mm.

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