CN220227782U

CN220227782U - Differential lubrication system and vehicle

Info

Publication number: CN220227782U
Application number: CN202321793190.8U
Authority: CN
Inventors: 袁晓; 李银涛; 张洋
Original assignee: Sany Intelligent Equipment Co ltd; Sany Heavy Equipment Co Ltd
Current assignee: Sany Intelligent Equipment Co ltd; Sany Heavy Equipment Co Ltd
Priority date: 2023-07-10
Filing date: 2023-07-10
Publication date: 2023-12-22
Anticipated expiration: 2033-07-10

Abstract

The utility model relates to the technical field of vehicles, in particular to a differential lubricating system and a vehicle. The differential lubrication system includes: the oil tank is used for storing lubricating oil; the oil pump is connected with the oil tank and is used for sucking lubricating oil from the oil tank; the flow dividing valve is connected with the oil pump and used for dividing lubricating oil sucked by the oil pump; the oil conveying pipeline is connected with the flow dividing valve and used for conveying lubricating oil which is divided by the flow dividing valve to the differential mechanism; the bridge package is connected with oil pipeline and oil tank respectively for hold differential mechanism and lubricating oil, and make the lubricating oil in the bridge package flow to the oil tank. The application shunts the lubricating oil absorbed by the oil pump through the shunt valve so as to convey the shunted lubricating oil to the corresponding differential mechanism. Compared with a plurality of lubricating systems, the device can reduce the complexity and the cost, can also reduce the difficulty of installation and maintenance, and brings convenience to users.

Description

Differential lubrication system and vehicle

Technical Field

The utility model relates to the technical field of vehicles, in particular to a differential lubricating system and a vehicle.

Background

Vehicles are typically provided with a differential, typically utilizing centrifugal force generated by rotation of gears to move the lubricant, which may fall onto the differential or other components of the vehicle for lubrication.

In the related art, an independent lubrication system is generally provided for each differential, and thus a plurality of lubrication systems are required to lubricate a plurality of differentials. Compared with one lubrication system, a plurality of lubrication systems have the problems of complex structure and high cost.

Therefore, there is a need to design a differential lubrication system and a vehicle, which can solve the technical problems of complex structure and high cost caused by providing a plurality of lubrication systems.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, the present utility model provides a differential lubrication system that reduces system complexity and cost as compared to providing multiple lubrication systems.

The utility model further provides a vehicle comprising the differential lubricating system.

A differential lubrication system according to an embodiment of the first aspect of the present utility model includes: the oil tank is used for storing lubricating oil; the oil pump is connected with the oil tank and is used for sucking lubricating oil from the oil tank; the flow dividing valve is connected with the oil pump and used for dividing lubricating oil sucked by the oil pump; the oil conveying pipeline is connected with the flow dividing valve and used for conveying lubricating oil which is divided by the flow dividing valve to the differential mechanism; the bridge package is connected with oil pipeline and oil tank respectively for hold differential mechanism and lubricating oil, and make the lubricating oil in the bridge package flow to the oil tank.

Optionally, the differential lubrication system further comprises: the pressure relief pipeline is respectively connected with an oil outlet of the oil pump and the oil tank; the pressure relief valve is arranged in the pressure relief pipeline and used for being opened when the pressure of the lubricating oil in the pressure relief pipeline is larger than a safety threshold value so that the lubricating oil flows to the oil tank through the pressure relief pipeline.

Optionally, the differential lubrication system further comprises: and the first filter is arranged between the oil outlet of the oil pump and the flow dividing valve and is used for filtering lubricating oil flowing from the oil outlet of the oil pump to the flow dividing valve.

Optionally, the differential lubrication system further comprises: the oil suction pipeline is arranged between the oil tank and an oil inlet of the oil pump; and a second filter provided in the oil suction line for filtering the lubricating oil flowing from the oil tank to the oil pump.

Optionally, the oil inlet of the diverter valve is connected with the oil outlet of the oil pump, one end of the oil delivery pipeline is connected with the oil outlet of the diverter valve, and the other end of the oil delivery pipeline stretches into the bridge bag so as to spray lubricating oil to the differential mechanism by means of oil pressure.

Optionally, the bridge package is connected with the oil tank through an oil return pipeline, so that lubricating oil in the bridge package flows to the oil tank through the oil return pipeline.

Optionally, the oil tank is provided with an oil drain, and a sealing plug is arranged in the oil drain.

Optionally, the oil pipeline includes first oil pipeline and second oil pipeline, and the bridge package includes the intermediate bridge package, and the differential mechanism includes interaxle differential mechanism and first interwheel differential mechanism, and interaxle differential mechanism and first interwheel differential mechanism set up in the intermediate bridge package, and the one end of first oil pipeline and the one end of second oil pipeline are connected with the corresponding oil-out of shunt valve respectively, and the other end of first oil pipeline and the other end of second oil pipeline carry lubricating oil to interaxle differential mechanism and first interwheel differential mechanism respectively.

Optionally, the oil pipeline includes third oil pipeline, and the bridge package includes the rear axle package, and the differential mechanism includes the differential mechanism between the second wheel, and the differential mechanism sets up in the rear axle package between the second wheel, and the one end of third oil pipeline is connected with the corresponding oil-out of flow divider, and the other end of third oil pipeline carries lubricating oil to the differential mechanism between the second wheel.

A vehicle according to an embodiment of the second aspect of the utility model comprises a differential lubrication system in the first aspect or implementations thereof.

One of the above technical solutions has at least the following advantages or beneficial effects:

with the differential lubrication system of the embodiment of the utility model, the oil pump can suck the lubricating oil from the oil tank, and the flow-dividing valve can divide the lubricating oil sucked by the oil pump so as to convey the divided lubricating oil to the corresponding differential through the plurality of oil delivery pipelines, so that the plurality of differentials can be lubricated through the separate lubrication system. Compared with a plurality of lubricating systems, the lubricating system can reduce the complexity and the cost, can also reduce the difficulty of installation and maintenance, and brings convenience to users.

The vehicle provided by the embodiment of the utility model is provided with the differential lubrication system, and the vehicle provided with the differential lubrication system has corresponding technical effects because the differential lubrication system has the technical effects.

Drawings

Fig. 1 shows a schematic structural view of a differential lubrication system according to an embodiment of the present utility model.

[ reference numerals description ]

1. An oil tank; 2. an oil pump; 3. a diverter valve; 11. an oil suction pipeline; 12. an oil drain port; 13. sealing the plug; 4. an oil delivery pipeline; 41. a first oil delivery line; 42. a second oil delivery line; 43. a third oil delivery pipeline; 51. a pressure relief pipeline; 52. a pressure release valve; 61. a first filter; 62. a second filter; 71. a first oil return line; 72. the second oil return pipeline; 81. a bridge bag; 82. a rear axle bag; 91. an interaxle differential; 92. a first inter-wheel differential; 93. a second inter-wheel differential.

Detailed Description

The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings. References herein to terms such as "upper", "lower", "inner" and "outer" refer to the orientation of FIG. 1. The position of the oil pump 2 with respect to the oil tank 1 is defined as "up"; the position of the first inter-wheel differential 92 relative to the mid-bridge bag 81 is defined as "inner".

As described above, the inventors found in studies on differential lubrication systems and vehicles that the vehicles are generally provided with a transaxle. The drive axle may be a mechanism for changing the rotational speed and torque from the transmission and transmitting the rotational speed and torque to the drive wheels. The transaxle may include: main reducer, differential mechanism, wheel transmission and driving axle housing. The differential may be a device for rotating the two wheels at a non-constant speed to reduce friction between the wheels and the ground by the non-constant speed rotation of the two wheels. A differential lubrication system may be used to lubricate the differential. Common differential lubrication systems typically use rotating gears to drive the lubrication oil so that the lubrication oil splashes under centrifugal force; the splashed lubricating oil can fall onto the differential and the like to effect lubrication. However, the splash rate of the lubricating oil is affected by factors such as the running gradient and the differential speed, which may cause a problem that an oil film cannot be formed, resulting in damage to the cross shaft or the like of the differential due to lack of lubrication. In addition, vehicles are often provided with a plurality of differentials, and if a separate lubrication system is provided for each differential, this may cause problems of increased cost and complicated structure, which may cause inconvenience in installation and maintenance. In addition, when the temperature of the lubricating oil exceeds a predetermined temperature, lubrication failure such as lubrication failure of parts such as gears, bearings, etc. may be caused by the influence of heat; impurities in the lubricating oil can hinder the creation of an oil film, leading to lubrication failure and component damage.

In order to solve at least one of the technical problems in the prior art or related art, the utility model provides a differential lubrication system and a vehicle. A differential lubrication system and a vehicle according to some embodiments provided by the present utility model are described below with reference to fig. 1.

Referring to fig. 1, a differential lubrication system according to an embodiment of the present utility model includes: an oil tank 1 for storing lubricating oil; an oil pump 2 connected to the oil tank 1 for sucking the lubricating oil from the oil tank 1; a flow dividing valve 3 connected to the oil pump 2 for dividing the lubricating oil sucked by the oil pump 2; the oil delivery pipeline 4 is connected with the flow dividing valve 3 and is used for delivering lubricating oil which is divided by the flow dividing valve 3 to the differential mechanism; and the bridge bag is respectively connected with the oil conveying pipeline 4 and the oil tank 1 and is used for accommodating the differential mechanism and lubricating oil and enabling the lubricating oil in the bridge bag to flow to the oil tank 1.

In an exemplary embodiment, the oil tank 1 may store cooled lubricating oil, which may be lubricated using known lubricating oils. The oil tank 1 can also utilize the temperature difference to cool the lubricating oil; when the temperature inside the oil tank 1 is lower than the temperature of the space where the differential is located, the effect of cooling the lubricating oil can be achieved. The oil tank 1 can be used for increasing the heat dissipation area and the heat dissipation speed so as to reduce the temperature of the lubricating oil. Cooling can also be achieved by providing a refrigeration system, for example, a water cooling circulation system is provided for the oil tank 1, so that the temperature inside the oil tank 1 is reduced by the flow of water, the effect of cooling the lubricating oil is achieved, and the problem that the lubricating oil fails due to high-temperature lubricating oil is avoided.

In an exemplary embodiment, the oil pump 2 can increase the pressure of the lubricating oil and drive the lubricating oil to move, so that the lubricating oil can be more comprehensively injected into parts such as a differential, the film forming rate of an oil film is improved, and the problem of part damage caused by lubrication failure is avoided. The driving of the lubricating oil can be achieved by the oil pump 2, and lubrication can be performed with a lubricating oil having a higher pressure than passive lubrication by splashing of the lubricating oil, to improve the reliability of lubrication.

In an exemplary embodiment, the diverter valve 3 may divert the lubrication oil to deliver the diverted lubrication oil to the plurality of differentials, thereby enabling lubrication of the plurality of differentials by a separate lubrication system, reducing the problems of complex structure, high cost, and difficult installation and maintenance associated with providing additional lubrication systems.

In the exemplary embodiment, the diverter valve 3, the oil line 4, and the differentials are provided in correspondence to lubricate each differential, avoiding the problem of the differential being damaged by lack of lubrication.

In an exemplary embodiment, a bridge bag may be provided to house the differential and lubrication oil. The bridge bag may be spherical, hemispherical, box-like, etc. The interior of the bridge bag forms a space for accommodating the differential and lubricating oil. Since the lubricating oil can be located at the bottom of the bridge bag under the action of gravity, an opening can be provided at the bottom of the bridge bag so as to return the lubricating oil to the oil tank 1 through the pipes (e.g., the first oil return pipe 71 and the second oil return pipe 72 described below) connected to the opening, thereby realizing recovery of the lubricating oil, recycling the lubricating oil, and achieving the purpose of saving cost.

Further, the differential lubrication system further includes: the pressure relief pipeline 51 is respectively connected with the oil outlet of the oil pump 2 and the oil tank 1; a relief valve 52 provided in the relief line 51 for opening when the pressure of the lubricating oil in the relief line 51 is greater than a safety threshold value, so that the lubricating oil flows to the oil tank 1 through the relief line 51.

In the exemplary embodiment, in order to avoid affecting the line safety due to excessive lubrication oil pressure, a relief line 51 is provided, and a relief valve 52 is provided in the relief line 51. The relief valve 52 is used to open when the pressure of the lubricating oil in the relief line 51 is greater than a safety threshold value, so that the lubricating oil flows to the oil tank 1 through the relief line 51, thereby avoiding damage to the line or other components caused by the lubricating oil having a pressure above the safety threshold value entering the line.

Further, the differential lubrication system further includes: a first filter 61, provided between the oil outlet of the oil pump 2 and the flow dividing valve 3, for filtering the lubricating oil flowing from the oil outlet of the oil pump 2 to the flow dividing valve 3.

In an exemplary embodiment, the first filter 61 may filter impurities in the lubricating oil, prevent the impurities from affecting the lubrication effect, improve the film forming rate and the lubrication reliability, and may reduce the replacement frequency of the lubricating oil. The filtering mode can be filter screen filtering, adsorption type filtering, precipitation type filtering and the like.

Further, the differential lubrication system further includes: the oil suction pipeline 11 is arranged between the oil tank 1 and an oil inlet of the oil pump 2; a second filter 62 is provided in the oil suction line 11 for filtering the lubricating oil flowing from the oil tank 1 to the oil pump 2.

In an exemplary embodiment, for example, the second filter 62 provided in the oil suction line 11 may be located at an end of the oil suction line 11 in the oil tank 1, that is, the second filter 62 may be provided in the oil tank 1 to primarily filter the lubricating oil, reducing the probability of foreign substances entering the line. The impurities in the oil tank 1 can also be precipitated by standing or the like for cleaning or discharging.

Further, an oil inlet of the flow dividing valve 3 is connected with an oil outlet of the oil pump 2, one end of the oil conveying pipeline 4 is connected with the oil outlet of the flow dividing valve 3, and the other end of the oil conveying pipeline 4 extends into the bridge bag so as to spray lubricating oil to the differential mechanism by means of oil pressure.

In an exemplary embodiment, the end of the oil delivery line 4 protruding into the interior of the axle package may be located in the vicinity of the differential in order to inject lubricating oil to the differential by means of oil pressure, thereby providing lubrication to the differential, avoiding damage to the differential due to lack of lubrication. The lubricating oil with the oil pressure has the advantage of higher film forming rate and improves the lubricating effect.

Further, the bridge package is connected with the oil tank 1 through an oil return pipeline, so that lubricating oil in the bridge package flows to the oil tank 1 through the oil return pipeline.

In the exemplary embodiment, the lubricating oil in the intermediate bridge bag 81 flows back to the oil tank 1 through the first oil return pipeline 71, and the lubricating oil in the rear bridge bag 82 flows back to the oil tank 1 through the second oil return pipeline 72, so that the recycling of the lubricating oil is realized, and the effect of saving the cost is achieved.

Further, the oil tank 1 is provided with an oil drain port 12, and a sealing plug 13 is arranged in the oil drain port.

In the exemplary embodiment, the oil tank 1 can be sealed by the oil drain port 12 to be replaced with lubricating oil or to drain foreign substances, and the sealing effect of the oil tank 1 can be improved by the seal plug 13 to avoid leakage of lubricating oil, which has the advantage of compact structure.

Further, the oil delivery pipeline 4 includes a first oil delivery pipeline 41 and a second oil delivery pipeline 42, the bridge package includes a middle bridge package 81, the differential mechanism includes an inter-axle differential mechanism 91 and a first inter-wheel differential mechanism 92, the inter-axle differential mechanism 91 and the first inter-wheel differential mechanism 92 are disposed in the middle bridge package 81, one end of the first oil delivery pipeline 41 and one end of the second oil delivery pipeline 42 are respectively connected with corresponding oil outlets of the flow dividing valve 3, and the other end of the first oil delivery pipeline 41 and the other end of the second oil delivery pipeline 42 respectively convey lubricating oil to the inter-axle differential mechanism 91 and the first inter-wheel differential mechanism 92.

Further, the oil delivery pipeline 4 comprises a third oil delivery pipeline 43, the bridge package comprises a rear axle package 82, the differential mechanism comprises a second inter-wheel differential mechanism 93, the second inter-wheel differential mechanism 93 is arranged in the rear axle package 82, one end of the third oil delivery pipeline 43 is connected with a corresponding oil outlet of the flow dividing valve 3, and the other end of the third oil delivery pipeline 43 conveys lubricating oil to the second inter-wheel differential mechanism 93.

In an exemplary embodiment, through the pipeline structure, the distribution and the delivery of the lubricating oil are realized, the utilization rate of the lubricating oil is improved, and the device has the characteristics of simple and compact structure and cost reduction.

In another embodiment, the differential lubrication system of the exemplary embodiment may be provided in a vehicle. The vehicle may be a manned vehicle, a cargo vehicle, a coal mining vehicle, a mining wide body vehicle, or the like.

Because the vehicle provided by the embodiment has the differential lubrication system provided by any one of the embodiments, the vehicle has all the beneficial effects of the differential lubrication system provided by any one of the embodiments, and will not be described herein.

In the description of the present utility model, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "example embodiments," "examples," "specific examples," or "some examples," etc., refer to a particular feature, structure, material, or characteristic described in connection with the embodiment or example as being included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model.

Claims

1. A differential lubrication system, comprising:

an oil tank (1) for storing lubricating oil;

an oil pump (2) connected to the oil tank (1) for sucking up lubricating oil from the oil tank (1);

a flow dividing valve (3) connected with the oil pump (2) and used for dividing the lubricating oil sucked by the oil pump (2);

the oil delivery pipeline (4) is connected with the flow dividing valve (3) and is used for conveying lubricating oil which is divided by the flow dividing valve (3) to the differential mechanism;

and the bridge bag is respectively connected with the oil conveying pipeline (4) and the oil tank (1) and is used for accommodating the differential mechanism and lubricating oil and enabling the lubricating oil in the bridge bag to flow to the oil tank (1).

2. The differential lubrication system of claim 1, further comprising:

the pressure relief pipeline (51) is respectively connected with an oil outlet of the oil pump (2) and the oil tank (1);

and a pressure relief valve (52) arranged in the pressure relief pipeline (51) and used for opening when the pressure of the lubricating oil in the pressure relief pipeline (51) is larger than a safety threshold value so as to enable the lubricating oil to flow to the oil tank (1) through the pressure relief pipeline (51).

3. The differential lubrication system of claim 1, further comprising:

a first filter (61) provided between the oil outlet of the oil pump (2) and the flow dividing valve (3) for filtering the lubricating oil flowing from the oil outlet of the oil pump (2) to the flow dividing valve (3).

4. The differential lubrication system of claim 1, further comprising:

the oil suction pipeline (11) is arranged between the oil tank (1) and an oil inlet of the oil pump (2);

a second filter (62) provided in the oil suction line (11) for filtering the lubricating oil flowing from the oil tank (1) to the oil pump (2).

5. Differential lubrication system according to claim 1, characterized in that the oil inlet of the shunt valve (3) is connected with the oil outlet of the oil pump (2), that one end of the oil delivery line (4) is connected with the oil outlet of the shunt valve (3), and that the other end of the oil delivery line (4) extends into the interior of the bridge bag for injecting lubricating oil to the differential by means of oil pressure.

6. Differential lubrication system according to claim 1, characterized in that the bridge package is connected to the oil tank (1) by an oil return line, so that the lubricating oil in the bridge package flows through the oil return line to the oil tank (1).

7. Differential lubrication system according to claim 1, characterized in that the oil tank (1) is provided with an oil drain (12) in which a plug (13) is arranged.

8. Differential lubrication system according to claim 1, characterized in that the oil delivery line (4) comprises a first oil delivery line (41) and a second oil delivery line (42), the axle package comprises a mid-axle package (81), the differential comprises an inter-axle differential (91) and a first inter-wheel differential (92), the inter-axle differential (91) and the first inter-wheel differential (92) are arranged in the mid-axle package (81), one end of the first oil delivery line (41) and one end of the second oil delivery line (42) are connected with the corresponding oil outlets of the diverter valve (3), respectively, and the other end of the first oil delivery line (41) and the other end of the second oil delivery line (42) deliver lubricating oil to the inter-axle differential (91) and the first inter-wheel differential (92), respectively.

9. Differential lubrication system according to claim 1, characterized in that the oil delivery line (4) comprises a third oil delivery line (43), the axle package comprises a rear axle package (82), the differential comprises a second inter-wheel differential (93), the second inter-wheel differential (93) is arranged in the rear axle package (82), one end of the third oil delivery line (43) is connected with a corresponding oil outlet of the shunt valve (3), and the other end of the third oil delivery line (43) delivers lubricating oil to the second inter-wheel differential (93).

10. A vehicle, characterized by comprising:

the differential lubrication system of any one of claims 1 to 9.