Hydraulic retarder lubricating oil pump flow guide structure

Abstract

The utility model provides a hydraulic retarder lubricating oil pump flow guide structure which comprises an oil pump and a hydraulic retarder middle cover, the oil pump is installed on the hydraulic retarder middle cover, an oil outlet hole is formed in a shell of the oil pump, an oil guide sleeve is embedded in the oil outlet hole, the oil guide sleeve is provided with a first end and a second end, the first end is located in the oil outlet hole, and the second end is located in the oil outlet hole. An oil guide hole is formed in the position, corresponding to the oil outlet hole, of the hydraulic retarder middle cover, and when the oil pump and the hydraulic retarder middle cover are installed, the second end of the oil guide sleeve is inserted into the oil guide hole. And through the arrangement of the oil guide sleeve, the lubricating oil can better cool and lubricate the bearing and the oil seal.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic retarders, in particular to a flow guide structure of a lubricating oil pump of a hydraulic retarder. Background Art

[0002] A hydraulic retarder is an auxiliary braking device that operates when a vehicle is slowing or stopping. In the absence of external oil, that is, when in the closed state, the retarder is equipped with an internal lubricating oil pump to ensure adequate lubrication of the internal bearings and oil seals. The lubricating oil pump is mounted on the center cover and has an oil outlet on the end face of the pump body. Due to the gap between the pump body and the end face of the housing, the oil pumped by the lubricating oil pump is discharged through this gap and specific oil holes in the center cover, ultimately reaching the bearings and oil seals, achieving lubrication and cooling.

[0003] However, existing lubrication methods have several drawbacks. First, the lubrication oil pump is a low-pressure type, which means it may not be efficient in providing lubrication and cooling. Second, the clearance between the pump body and the center cover causes the oil to travel a long path between the pump outlet and the oil holes in the center cover. This can increase the distance the oil has to travel to reach the bearings and oil seals, resulting in suboptimal lubrication and cooling. Consequently, the current design suffers from inadequate lubrication and cooling of the bearings and oil seals. Utility Model Content

[0004] To solve the above problems, the utility model proposes a hydraulic retarder lubricating oil pump diversion structure, comprising an oil pump and a hydraulic retarder middle cover, the oil pump being installed on the hydraulic retarder middle cover, an oil outlet hole being provided on the housing of the oil pump, an oil guide sleeve being embedded in the oil outlet hole, the oil guide sleeve having a first end and a second end, the first end being located in the oil outlet hole, and the second end protruding from the housing end surface of the oil pump, an oil guide hole being provided at a position of the hydraulic retarder middle cover corresponding to the oil outlet hole, and when the oil pump and the hydraulic retarder middle cover are installed, the second end of the oil guide sleeve is inserted into the oil guide hole.

[0005] Furthermore, the aperture of the first end of the oil guide sleeve is larger than the aperture of the second end.

[0006] Furthermore, the diameter of the oil guide hole is larger than the diameter of the second end of the oil guide sleeve, and there is a gap between the second end and the oil guide hole.

[0007] Furthermore, the first end and the second end of the oil guide sleeve are stepped.

[0008] Furthermore, the oil guide sleeve gradually contracts from the first end toward the second end.

[0009] Furthermore, the oil outlet hole and the first end of the oil guide sleeve are interference fit.

[0010] By means of the oil guide sleeve of the utility model, the lubricating oil in the oil pump can flow through the middle cover of the hydraulic retarder in a better manner, so that the bearing and the oil seal have a better lubrication and cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the explosion of the oil pump, oil guide sleeve and hydraulic retarder middle cover in this application.

[0012] Figure 2 Schematic diagram of the structure of the oil guide sleeve embedded in the oil pump.

[0013] Figure 3 FIG. 1 is a schematic diagram of the oil guide sleeve structure in one embodiment of the present application. FIG.

[0014] Figure 4 for Figure 3 Cross-sectional view of the center oil guide sleeve.

[0015] Figure 5 Schematic diagram of the oil guide sleeve structure in another embodiment.

[0016] Reference numerals

[0017] 1 oil pump

[0018] 11 Oil outlet

[0019] 2 Hydraulic retarder middle cover

[0020] 21 Oil guide hole

[0021] 3 Oil guide sleeve

[0022] 31 First End

[0023] 32 Second End DETAILED DESCRIPTION

[0024] The following describes the implementation of the present application through specific embodiments. People familiar with this technology can easily understand other advantages and effects of the present application from the contents disclosed in this specification.

[0025] In the following description, please refer to the accompanying drawings, which describe several embodiments of the present application. It should be understood that other embodiments may also be used, and that mechanical, structural, electrical, and operational changes may be made without departing from the spirit and scope of the present disclosure. The following detailed description should not be considered restrictive, and the scope of the embodiments of the present application is limited only by the claims of the published patents. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. Spatially related terms, such as "upper", "lower", "left", "right", "below", "below", "lower", "above", "upper", etc., may be used in the text to illustrate the relationship between one element or feature shown in the figure and another element or feature.

[0026] Although the terms first, second etc. are used to describe various elements or parameters in this article in some instances, these elements or parameters should not be limited by these terms.These terms are only used to distinguish one or parameter part from another or parameter.For example, the first end can be referred to as the second end, and similarly, the second end can be referred to as the first end, without departing from the scope of the various described embodiments.The first end and the second end are both describing one end, but unless the context clearly indicates otherwise, they are not the same end.

[0027] Furthermore, as used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprise", "include" indicate the presence of the described features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or" and "and / or" used herein are interpreted as inclusive, or mean any one or any combination. Thus, "A, B, or C" or "A, B, and / or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B, and C". Exceptions to this definition occur only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0028] The main function of the lubricating oil pump diversion structure of this utility model is to lubricate the bearings and oil seals after the lubricating oil is discharged from the oil pump through the hydraulic retarder middle cover. Figure 1-Figure 4The hydraulic retarder lubricating oil pump diversion structure proposed in the utility model includes an oil pump 1 and a hydraulic retarder middle cover 2. The oil pump 1 is installed on the hydraulic retarder middle cover 2. An oil outlet hole 11 is provided on the housing of the oil pump 1. An oil guide sleeve 3 is embedded in the oil outlet hole 11. The oil guide sleeve 3 has a first end 31 and a second end 32. The oil outlet hole 11 and the first end 31 of the oil guide sleeve 3 are interference fit, and the aperture of the first end 31 of the oil guide sleeve 3 is larger than the aperture of the second end 32. At the same time, when installed, the first end 31 is located in the oil outlet hole 11, and the second end 32 protrudes from the end surface of the housing of the oil pump 1.

[0029] An oil guide hole 21 is provided in the hydraulic retarder's middle cover 2 at a position corresponding to the oil outlet hole 11. When the oil pump 1 is installed with the hydraulic retarder's middle cover 2, the second end 32 of the oil guide sleeve 3 is inserted into the oil guide hole 21. The diameter of the oil guide hole 21 is larger than the diameter of the second end 32 of the oil guide sleeve 3, creating a gap between the second end 32 and the oil guide hole 21. Furthermore, it is important to note that when the second end 32 of the oil guide sleeve 3 is inserted into the oil guide hole 21, the end surface of the second end 32 does not protrude beyond the end surface of the hydraulic retarder's middle cover 2. In this embodiment, the first end 31 and second end 32 of the oil guide sleeve 3 are stepped.

[0030] Please refer to Figure 5 In another embodiment, the oil guide sleeve 3 tapers from the first end 31 toward the second end 32 .

[0031] By means of the oil guide sleeve of the utility model, the lubricating oil in the oil pump can flow through the middle cover of the hydraulic retarder in a better manner, so that the bearing and the oil seal have a better lubrication and cooling effect.

[0032] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly specified and limited, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A hydraulic retarder lubricating oil pump guide structure, comprising an oil pump and a hydraulic retarder middle cover, wherein the oil pump is mounted on the hydraulic retarder middle cover, and is characterized in that: The oil pump housing is provided with an oil outlet hole, and an oil guide sleeve is embedded in the oil outlet hole. The oil guide sleeve has a first end and a second end, the first end is located in the oil outlet hole, and the second end protrudes from the end surface of the oil pump housing. The hydraulic retarder middle cover is provided with an oil guide hole at a position corresponding to the oil outlet hole. When the oil pump and the hydraulic retarder middle cover are installed, the second end of the oil guide sleeve is inserted into the oil guide hole.

2. A hydraulic retarder lubricating oil pump flow guide structure according to claim 1, characterized in that: The aperture of the first end of the oil guide sleeve is larger than the aperture of the second end.

3. The hydraulic retarder lubricating oil pump flow guide structure according to claim 1, characterized in that: The diameter of the oil guide hole is larger than the diameter of the second end of the oil guide sleeve, and there is a gap between the second end and the oil guide hole.

4. The hydraulic retarder lubricating oil pump flow guide structure according to claim 1, characterized in that: The first end and the second end of the oil guide sleeve are stepped.

5. The hydraulic retarder lubricating oil pump flow guide structure according to claim 1, characterized in that: The oil guide sleeve gradually contracts from the first end toward the second end.

6. The hydraulic retarder lubricating oil pump flow guide structure according to claim 1, characterized in that: The oil outlet hole and the first end of the oil guide sleeve are in interference fit.

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