An oil collection system and method for automatically enhancing bearing lubrication

Abstract

The application discloses an oil collecting system and method for automatically enhancing bearing lubrication, and belongs to the field of torque converters. The system is characterized in that a lubricating oil channel is additionally arranged between a hydraulic valve plate system and a torque converter shell to enable the two to be communicated. Meanwhile, the system takes into account the treatment of splashed oil during power take-off engagement. The oil is collected by an oil collecting device and then delivered back to the bearing, thereby realizing the function of automatically enhancing bearing lubrication. The above structure design enables the torque converter to arrange the lubricating structure on the limited shell, and meanwhile meets the design requirement of vehicle light weight. The structure is not only low in cost, high in performance-price ratio, and low in design difficulty, but also simple and compact in the whole, thereby prolonging the service life of the bearing and having good popularization and application value.

Description

Technical Field

[0001] This invention belongs to the field of torque converters, and specifically relates to an oil collection system and method for automatically enhancing bearing lubrication. Background Technology

[0002] Currently, market demand for vehicles with low fuel consumption, high emissions, and high cost-effectiveness is increasing daily. Lightweight design of construction machinery vehicles needs to consider reducing fuel consumption and pollutant emissions, making these vehicles cleaner and more environmentally friendly. As a crucial component of the power transmission system of construction machinery vehicles, the torque converter's lightweight design is also a key solution for achieving lightweight design in construction machinery vehicles.

[0003] The most important aspect of lightweight torque converter design is ensuring a simpler and more compact layout of the torque converter housing. This requires achieving lightweight design in both space and weight dimensions while ensuring the housing functions properly. However, within the limited housing space, arranging specific lubrication structures to ensure the proper operation of gear bearings undoubtedly increases the design difficulty. Increasing the housing space to accommodate lubrication structures for multiple gear bearings would significantly increase the overall weight and structural complexity of the torque converter, thereby increasing manufacturing costs, timelines, and scrap rates. Furthermore, adopting this design philosophy contradicts the requirements and standards for lightweight vehicle design and limited installation space, failing to meet the stringent requirements of OEMs. Summary of the Invention

[0004] To overcome the above-mentioned technical defects, the present invention provides an oil collection system and method for automatically enhancing bearing lubrication. By using this system and method, the technical problem of difficulty in arranging lubrication structures on the limited housing of existing torque converters can be solved.

[0005] To achieve the above objectives, the present invention employs the following technical content:

[0006] An automatic enhanced bearing lubrication oil collection system includes a lubrication oil passage for connecting a hydraulic valve plate system and a torque converter housing, and an oil collection device fixed in the torque converter housing; the oil collection device is used to collect oil splashed during power take-off engagement and transport the oil to the bearing; a base is fixed on the torque converter housing;

[0007] The oil collection device includes a support shaft inserted into the bearing; the support shaft is fixedly connected to the base; the base has a first oil collection groove for collecting oil splashed during the force take-off engagement process; the support shaft has a second oil collection groove circumferentially formed for conveying oil to the bearing; the first oil collection groove and the second oil collection groove are in communication.

[0008] Furthermore, the bearing is mounted in the base.

[0009] Furthermore, the first oil collection groove has an inclined bottom surface, which allows the collected oil to flow into the second oil collection groove.

[0010] Furthermore, the second oil collection groove is connected to an oil delivery hole; the opening of the oil delivery hole faces the power take-off gear; the power take-off gear is sleeved on the bearing.

[0011] Furthermore, the bearing is press-fitted into the inner hole of the power take-off gear, and the bearing is fixed in the retaining ring groove of the power take-off gear by a retaining ring.

[0012] Furthermore, the axial cross-section of the oil delivery hole is V-shaped.

[0013] Furthermore, the support shaft has an axial through hole, and the through hole is eccentrically positioned relative to the support shaft.

[0014] Furthermore, the hydraulic valve plate system includes an oil drain groove and an oil collection groove connected thereto; one end of the lubricating oil passage is connected to the oil collection groove, and the nozzle of the other end is aligned with the central gear fixed on the torque converter housing.

[0015] Furthermore, an oil drain hole is provided at the bottom of the torque converter housing.

[0016] An automatic enhanced bearing lubrication oil collection method, based on the aforementioned automatic enhanced bearing lubrication oil collection system, includes: oil being sprayed from a hydraulic valve plate system into a torque converter housing through a lubrication oil passage; oil splashed during the power take-off engagement process being collected through a first oil collection groove; and then the oil being transported to the bearing through a second oil collection groove.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention provides an automatic enhanced bearing lubrication oil collection system. It employs a lubrication oil passage added between the hydraulic valve plate system and the torque converter housing to connect the two. Simultaneously, the system considers the handling of splashed oil during power take-off engagement. Through the cooperation of a first and second oil collection groove in the oil collection device, the oil is recovered and transported back to the bearing, achieving automatic enhanced bearing lubrication. This structural design allows the torque converter to arrange the lubrication structure within a limited housing, while simultaneously meeting the vehicle's lightweight design requirements. This not only reduces costs and improves cost-effectiveness, but also simplifies the design and makes the overall structure more concise and compact, extending the bearing's service life. It has significant potential for widespread application.

[0019] Preferably, the oil collection device of the present invention includes a first oil collection groove and a second oil collection groove, which cooperate to collect and transport the oil splashed during the power take-off engagement process.

[0020] More preferably, the first oil collection groove is provided with an inclined bottom surface. This design facilitates the flow of oil into the second oil collection groove.

[0021] More preferably, in order to facilitate the delivery of oil, the second oil collection groove is connected to the oil delivery hole, and the opening of the oil delivery hole faces the power take-off gear, so as to facilitate the delivery of the collected oil to the power take-off gear.

[0022] More preferably, the axial cross-section of the oil delivery hole is a figure-eight shape, which adopts an expanded delivery structure, which helps to deliver oil and ensures that the bearing is fully lubricated.

[0023] More preferably, the present invention uses a retaining ring to fix the bearing in the retaining ring groove of the power take-off gear, thereby preventing the bearing from coming out of the inner hole of the power take-off gear during rotation.

[0024] More preferably, the support shaft has a through hole in its axial direction for fixing it to the base, and is set with an eccentric structure relative to the support shaft. This greatly simplifies the structural design of the torque converter housing for installing and fixing the power take-off gear, while ensuring that the power take-off gear is adequately supported. This further reduces the complexity of the torque converter housing structure and significantly reduces the difficulty and cost of designing and manufacturing the torque converter housing.

[0025] Preferably, the present invention provides an oil drain hole at the bottom of the torque converter housing. This ensures that the oil accumulated at the bottom of the torque converter housing can be drained in a timely manner, avoiding excessive oil accumulation at the bottom of the torque converter housing and causing additional drag resistance to the power take-off gear.

[0026] The present invention also provides an oil collection method for automatically enhancing bearing lubrication. Based on the above-mentioned oil collection system for automatically enhancing bearing lubrication, this collection method can solve the technical problem of arranging lubrication structures on a limited housing, resulting in a large overall mass and complex structure of the torque converter, and meets the design requirements for lightweighting. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the torque converter provided in Embodiment 1 of the present invention;

[0028] Figure 2 is a cross-sectional view of the torque converter provided in Embodiment 1 of the present invention, wherein Figure 2(a) is an overall cross-sectional view; Figure 2(b) is a magnified view of the ellipse in Figure 2(a);

[0029] Figure 3 This is a cross-sectional view of an oil collection system for automatically enhancing bearing lubrication provided in Embodiment 1 of the present invention;

[0030] Figure 4 This is a front view of the torque converter provided in Embodiment 1 of the present invention;

[0031] Figure 5 is a schematic diagram of the support shaft of the oil collection system for automatically enhanced bearing lubrication provided in Embodiment 1 of the present invention; wherein, Figure 5(a) is a perspective view; Figure 5(b) is a side sectional view;

[0032] Figure 6 This is a schematic diagram of the connection structure between the power take-off gear and the central gear provided in Embodiment 1 of the present invention;

[0033] Figure 7 A partially enlarged view of the first and second oil collection grooves provided in Embodiment 1 of the present invention;

[0034] Figure 8 is a cross-sectional view of the torque converter provided in Embodiment 2 of the present invention; wherein, Figure 8(a) is an overall cross-sectional view; and Figure 8(b) is a magnified view of the ellipse in Figure 8(a).

[0035] Figure label:

[0036] Hydraulic valve plate system-1; torque converter housing-2; power take-off gear-3; center gear-4; lubrication oil passage-5; bearing-6; bolt-7; support shaft-8; base-9; first oil collection groove-10; second oil collection groove-11; oil delivery hole-12; through hole-13; oil drain hole-14; oil drain groove-15; oil accumulation groove-16. Detailed Implementation

[0037] To make the technical problems solved by the present invention, the technical solutions, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of the present invention. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of the invention.

[0038] The present invention provides an oil collection system for automatically enhancing bearing lubrication, including a lubrication oil passage 5 for connecting a hydraulic valve plate system 1 and a torque converter housing 2, and an oil collection device fixed in the torque converter housing 2; the oil collection device is used to collect the oil splashed during the power take-off engagement and transport the oil to the bearing 6.

[0039] Specifically, a base 9 is fixed on the torque converter housing 2; a bearing 6 is installed in the base 9; the oil collection device includes a support shaft 8 inserted into the bearing 6; the support shaft 8 is fixedly connected to the base 9; a first oil collection groove 10 is provided on the base 9 for collecting the oil splashed during the power take-off engagement; a second oil collection groove 11 is provided on the support shaft 8 in the circumferential direction for conveying the oil to the bearing 6; the first oil collection groove 10 and the second oil collection groove 11 are connected.

[0040] To facilitate the flow of oil into the second oil collection groove 11, the first oil collection groove 10 is configured with an inclined bottom surface, which allows the collected oil to flow into the second oil collection groove 11.

[0041] To facilitate the delivery of oil, an oil delivery hole 12 is connected to the second oil collection groove 11; the opening of the oil delivery hole 12 faces the power take-off gear 3; the power take-off gear 3 is sleeved on the bearing 6, so as to facilitate the delivery of the collected oil to the power take-off gear 3.

[0042] To prevent the bearing 6 from coming out of the inner hole of the power take-off gear 3 during rotation, the bearing 6 is press-fitted into the inner hole of the power take-off gear 3 and fixed in the retaining ring groove of the power take-off gear 3 by a retaining ring.

[0043] The axial section of the oil delivery hole 12 is V-shaped, and the expanded delivery structure facilitates the delivery of oil, ensuring that the bearing is adequately lubricated.

[0044] The support shaft 8 has an axial through hole 13. The through hole 13 is set with an eccentric structure relative to the support shaft 8, which greatly simplifies the structural design of the torque converter housing 2 in terms of installing and fixing the power take-off gear 3. At the same time, it ensures that the power take-off gear 3 is adequately supported, further reducing the complexity of the torque converter housing 2 structure, and also significantly reducing the design and production difficulty and cost of the torque converter housing 2.

[0045] Specifically, the hydraulic valve plate system 1 includes an oil drain groove 15 and an oil collection groove 16 connected thereto; one end of the lubricating oil passage 5 is connected to the oil collection groove 16, and the nozzle of the other end is aligned with the central gear 4 fixed on the torque converter housing 2.

[0046] In order to ensure that the oil accumulated at the bottom of the torque converter housing 2 can be discharged in time and to avoid excessive oil accumulation at the bottom of the torque converter housing 2 causing additional drag resistance to the power take-off gear 3, an oil drain hole 14 is opened at the bottom of the torque converter housing 2.

[0047] The present invention also provides an oil collection method for automatically enhancing bearing lubrication. Based on the above-mentioned oil collection system for automatically enhancing bearing lubrication, the method includes: oil being sprayed from the hydraulic valve plate system 1 into the torque converter housing 2 through the lubrication oil passage 5; oil splashed during the power take-off engagement being collected by an oil collection device and transported to the bearing 6; that is, oil splashed during the power take-off engagement being collected through the first oil collection groove 10 and then transported to the bearing 6 through the second oil collection groove 11.

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0050] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0051] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0052] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0053] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0054] The present invention will now be described in further detail with reference to the accompanying drawings:

[0055] Example 1

[0056] As mentioned in the background technology, all-terrain cranes, as special engineering machinery vehicles, combine the mobility and flexibility of truck cranes with the superior off-road capability and load-carrying capacity of crawler cranes. They possess advantages such as high mobility, strong off-road performance, and wide application, holding an irreplaceable position in fields such as engineering construction, port operations, mining construction and operation, and oil fields, and are particularly suitable for engineering operations in confined spaces. Therefore, there is an urgent need to develop torque converters with completely independent intellectual property rights that can be fully integrated into the high-end power transmission systems of all-terrain cranes. Based on this environment, the torque converter requires a lightweight structural design. Most importantly, it must ensure a simpler and more compact layout of the torque converter housing structure, achieving lightweight design in both space and mass dimensions while ensuring the normal operation of the torque converter housing. However, within the limited housing space, arranging specific lubrication structures inside the torque converter housing to ensure the normal operation of gear bearings undoubtedly increases the design difficulty. Increasing the housing space to accommodate lubrication structures for multiple gear bearings would significantly increase the overall mass and structural complexity of the torque converter, thereby increasing manufacturing costs, timelines, and scrap rates. Furthermore, this design concept contradicts the requirements and standards for lightweight vehicle design and limited installation space, failing to meet the stringent requirements of OEMs. To address the technical problem of large overall mass and complex structure in torque converters due to the limited housing space required for lubrication structures in existing technologies, this embodiment provides an automatic enhanced bearing lubrication oil collection system. This system can adequately lubricate gear bearings without specific lubrication structures within the semi-sealed structure of the torque converter, ensuring normal operation and preventing reduced bearing life due to insufficient oil or lubrication. By improving the structural connection between gears, bearings, and the torque converter, the system ensures a simple connection structure, prevents bolts from loosening and falling off automatically, and thus reduces the product failure rate and customer maintenance costs for high-end power transmission systems and torque converters in off-road cranes and special engineering machinery vehicles. This enhances the overall cost-effectiveness and market brand power of the torque converter and power transmission system products. Figure 1 As shown, the specific structure of this system includes:

[0057] The lubrication passage 5 connecting the hydraulic valve plate system 1 and the torque converter housing 2 is fixed to the base 9 by a support shaft 8 with through holes 13 and bolts 7. A first oil collection groove 10 is formed upwards around the base 9, and a second oil collection groove 11, which communicates with the first oil collection groove 10, is formed upwards around the support shaft 8. An oil delivery hole 12 is provided for delivering oil to the bearing 6. The hydraulic valve plate system 1 is an integrated, high-precision controlled system, offering advantages of high integration and high-precision control. The following refers to Figures 2(a), 2(b), and... Figure 3 The specific allocation process for this system is as follows:

[0058] (1) Press the bearing 6 into the inner hole of the power take-off gear 3 using a special press-fitting device, and install the retaining ring in the retaining ring groove of the power take-off gear 3 to prevent the bearing 6 from coming out of the inner hole of the power take-off gear 3. (2) Insert the support shaft 8 into the bearing 6 installed in step (1), and then install the whole assembly on the base 9 of the torque converter housing 2.

[0059] (3) Tighten the bolt 7 to the base 9 of the torque converter housing 2 through the bolt mounting through hole 13 of the support shaft 8.

[0060] (4) Repeat steps (1)-(3) to install the remaining three power take-off gears 3.

[0061] (5) Install the remaining components of the torque converter according to the installation manual, and finally install the hydraulic valve plate system 1 on the torque converter housing 2. This completes the assembly of the oil collection system.

[0062] The invention provides an automatic enhanced bearing lubrication oil collection system with a simple and reliable structure, convenient installation, and low manufacturing cost. The development principle is as follows: On one hand, by arranging the hydraulic valve plate system 1 directly above the torque converter housing 2, and designing and machining lubrication oil passages 5 at the contact points between the oil drain groove 15 of the hydraulic valve plate system 1 and the torque converter housing 2, the design and machining of oil drain passages for the hydraulic valve plate system 1 are avoided, simplifying the overall structure, layout, and volume of the hydraulic valve plate system 1. This also avoids the need for oil passage arrangement and the design and installation of lubrication components in the torque converter housing 2 to lubricate the center gear 4 and the power take-off gear 3, effectively reducing the manufacturing difficulty and production cost of the hydraulic valve plate system 1 and the torque converter housing 2. On the other hand, as... Figure 3 , Figure 4As shown in Figures 5(a) and 5(b), by designing and machining four bases 9 of the torque converter housing 2, and designing and machining a first oil collection groove 10 on the base 9 of the torque converter housing 2, and designing a second oil collection groove 11 and an oil delivery hole 12 with a figure-eight expansion structure on the support shaft 8, the combined use of the first oil collection groove 10, the second oil collection groove 11 and the oil delivery hole 12 with a figure-eight expansion structure achieves sufficient lubrication of the bearing 6 installed in the semi-enclosed structure of the power take-off gear 3. This avoids the need to design and machine oil passages and lubrication and installation fixing components in the torque converter housing 2 for lubricating the bearing 6 and installing the power take-off gear 3, greatly simplifying the structure and volume of the torque converter housing 2, and effectively reducing the manufacturing difficulty and production cost of the torque converter housing 2. Finally, the eccentric structure design of the bolt mounting through hole 13 on the support shaft 8 prevents the bolt 7 from being unable to be tightened due to the rotation of the support shaft 8 during the tightening process. This reduces the design and production of installation fixtures to prevent the support shaft 8 from rotating, and also prevents the fastening bolt 7 from loosening due to adverse factors such as high-frequency vibration during operation. This, in turn, improves the service life of the center gear 4, the power take-off gear 3, and the bearing 6, and reduces the failure rate. This not only improves the ease of installation of the oil collection system, but also further reduces the production cost of the hydraulic valve plate system 1 and the torque converter housing 2.

[0063] like Figure 6 and Figure 7 As shown, the structural design principle of this system enhancement for lubricating the center gear 4, power take-off gear 3, and bearing 6, and improving their service life, is as follows: On the one hand, by rationally arranging the installation position of the hydraulic valve plate system 1 on the torque converter housing 2 and connecting the oil drain groove of the hydraulic valve plate system 1 to the torque converter housing 2 through the lubrication oil passage 5, the lubrication effect on the center gear 4 and power take-off gear 3 is enhanced, ensuring sufficient lubrication for the center gear 4 and power take-off gear 3, reducing damage to the center gear 4 and power take-off gear 3 during high-speed rotation meshing, and the oil carries away the damage to the center gear 4 and power take-off gear 3 during the lubrication process. The heat generated during the rotational meshing process increases the service life of the center gear 4 and the power take-off gear 3, reducing the failure rate of the torque converter. On the other hand, the structural design of the oil delivery hole 12, which adopts the first oil collection groove 10, the second oil collection groove 11, and the "eight"-shaped expansion structure, allows a large amount of lubricating oil splashed out during the high-speed rotational meshing of the center gear 4 and the power take-off gear 3 to be collected and timely lubricated to the bearing 6 installed in the semi-enclosed structure of the power take-off gear 3. At the same time, it greatly reduces the temperature of the bearing 6 during high-speed rotation, increases the service life of the bearing 6, and further reduces the failure rate of the torque converter.

[0064] The design principles for improving the lightweight and compact structure of the torque converter in this system are as follows: On the one hand, by adopting an integrated structural design of the base 9 for mounting and fixing the power take-off gear 3 and the support shaft 8 with the torque converter housing 2, the power take-off gear 3 is installed on the torque converter housing 2 by bolts 7 and the support shaft 8. This reduces the design and processing of unnecessary mounting and fixing structures and unnecessary parts in the torque converter housing 2, effectively reducing the mass, volume, and structural complexity of the torque converter housing 2. On the other hand, by adopting a reasonable arrangement of the installation position of the hydraulic valve plate system 1 in the torque converter housing 2, connecting the oil drain groove of the hydraulic valve plate system 1 with the torque converter housing 2 through the lubrication oil passage 5, and the structural design of the oil delivery hole 12 with the first oil collection groove 10, the second oil collection groove 11 of the support shaft 8, and the "eight"-shaped expansion structure, the design of the lubrication oil passage of the hydraulic valve plate system 1 and the torque converter housing 2 is simplified, effectively reducing the volume and mass of the hydraulic valve plate system 1 and the torque converter housing 2, further improving the compactness of the overall torque converter structure, which is in line with the lightweight design concept.

[0065] Example 2

[0066] This embodiment addresses the issue of timely drainage of oil accumulated at the bottom of the torque converter housing 2. Based on embodiment 1, it has been optimized, as shown in Figures 8(a) and 8(b). An oil drain hole 14 is provided at the bottom of the torque converter housing 2. Ideally, the lowest point of the oil drain hole 14 is lower than the lower edge of the power take-off gear 3. This better ensures that the oil accumulated at the bottom of the torque converter housing 2 can be drained in a timely manner, avoiding excessive oil accumulation at the bottom of the torque converter housing 2, which would cause additional drag resistance to the power take-off gear 3.

[0067] This embodiment further explains the working principle of the system:

[0068] As shown in Figure 8(b), during the operation of the hydraulic valve plate system 1, some oil in the valve block will be discharged into the drain groove within the hydraulic valve plate system 1 during pressure adjustment. To prevent excessive oil accumulation in the drain groove from affecting the working capacity of the hydraulic valve plate system 1, and considering that the central gear 4, power take-off gear 3, and power take-off gear bearing 6 within the torque converter housing 2 all require oil lubrication, we designed an oil collection groove 16 on the torque converter housing 2. The function of the oil collection groove 16 is to receive oil from the drain groove 15 within the hydraulic valve plate system 1, preventing excessive oil accumulation in the drain groove 15 due to insufficient drainage through the lubrication passage 5 of the torque converter housing 2, which could cause excessive oil pressure within the hydraulic valve plate system 1 and lead to oil leakage. Furthermore, the structural design of the oil collection groove 16 also effectively achieves the lightweight design of the torque converter housing 2.

[0069] Oil is discharged from the drain trough 15 in the hydraulic valve plate system 1 into the oil collection trough of the torque converter housing 2, and then through the lubrication oil passage 5 to provide "shower-style" lubrication for the central gear 4. When the oil is sprayed onto the central gear 4 through the lubrication oil passage 5, on the one hand, the high-speed rotating central gear 4 will quickly move the oil to the meshing point of the power take-off gear 3, lubricating the teeth at the meshing point and removing a large amount of heat generated during the meshing process, thereby improving the service life of the central gear 4 and the power take-off gear 3; on the other hand, the high-speed rotating central gear 4 and the power take-off gear 3 will splash the lubricating oil in all directions. At this time, some of the lubricating oil will collide with the inner wall of the torque converter housing 2 at high speed, most of the oil will be reflected onto the base 9, and some oil will adhere to it. The oil adhering to it will flow into the first oil collection groove 10 along the outer wall of the base 9; some of the lubricating oil will collide with the inner wall of the torque converter housing 2 at high speed and then be directly reflected and splashed into the first oil collection groove 10. At this time, the oil collected in the first oil collection groove 10 will flow into the second oil collection groove 11 because the bottom structure of the first oil collection groove 10 is inclined (the bottom of the groove near the end face of the support shaft 8 is lower). Figure 7 As shown in Figure 5, the second oil collection groove 11 is located inside the oil delivery hole 12. Therefore, the oil collected in the second oil collection groove 11 will quickly flow into the oil delivery hole 12. Because the oil delivery hole 12 adopts an "eight"-shaped expansion structure design (that is, the end of the oil collection groove 10 near the rear housing power take-off gear mounting base is expanded), the oil flows into the power take-off gear 3 through the oil delivery hole 12 and completes the lubrication of the power take-off gear bearing 6 along the wall of the power take-off gear 3.

[0070] The above embodiments are merely one of the implementation methods for achieving the technical solution of the present invention. The scope of protection claimed by the present invention is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention.

Claims

1. An automatic oil collection system for enhancing bearing lubrication, characterized in that, It includes a lubrication passage (5) for connecting the hydraulic valve plate system (1) and the torque converter housing (2) and an oil collection device fixed in the torque converter housing (2); the oil collection device is used to collect the oil splashed during the power take-off engagement and deliver the oil to the bearing (6); a base (9) is fixed on the torque converter housing (2). The oil collection device includes a support shaft (8) inserted into the bearing (6); the support shaft (8) is fixedly connected to the base (9); the base (9) has a first oil collection groove (10) for collecting oil splashed during the power take-off engagement process; the support shaft (8) has a second oil collection groove (11) circumferentially formed for conveying oil to the bearing (6); the first oil collection groove (10) and the second oil collection groove (11) are in communication. The bearing (6) is mounted on the base (9); The second oil collection groove (11) is connected to an oil delivery hole (12); the opening of the oil delivery hole (12) faces the power take-off gear (3); the power take-off gear (3) is sleeved on the bearing (6); wherein the oil delivery hole (12) is located on the support shaft (8).

2. The automatic enhanced bearing lubrication oil collection system according to claim 1, characterized in that, The first oil collection groove (10) has an inclined bottom surface, which allows the collected oil to flow into the second oil collection groove (11).

3. The automatic enhanced bearing lubrication oil collection system according to claim 1, characterized in that, The bearing (6) is press-fitted into the inner hole of the power take-off gear (3) and the bearing (6) is fixed in the retaining groove of the power take-off gear (3) by a retaining ring.

4. The automatic enhanced bearing lubrication oil collection system according to claim 1, characterized in that, The axial cross section of the oil delivery hole (12) is V-shaped.

5. The automatic enhanced bearing lubrication oil collection system according to claim 1, characterized in that, The support shaft (8) has an axial through hole (13), and the through hole (13) is eccentrically arranged relative to the support shaft (8).

6. The automatic enhanced bearing lubrication oil collection system according to claim 1, characterized in that, The hydraulic valve plate system (1) includes an oil drain groove (15) and an oil collection groove (16) connected thereto; one end of the lubricating oil passage (5) is connected to the oil collection groove (16), and the nozzle of the other end is aligned with the central gear (4) fixed on the torque converter housing (2).

7. The automatic enhanced bearing lubrication oil collection system according to claim 1, characterized in that, The bottom of the torque converter housing (2) is provided with an oil drain hole (14).

8. A method for automatically enhancing bearing lubrication oil collection, based on the automatic enhanced bearing lubrication oil collection system according to any one of claims 1-7, characterized in that, include: Oil is sprayed from the hydraulic valve plate system (1) into the torque converter housing (2) through the lubrication oil passage (5). During the power take-off engagement, the splashed oil is collected through the first oil collection groove (10) and then transported to the bearing (6) through the second oil collection groove (11).

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