CN220118611U - A gearbox bearing lubrication structure - Google Patents

Abstract

The utility model relates to a gearbox bearing lubrication structure. It solves technical problems such as poor lubrication effect of bearings in existing gearboxes. It includes a clutch housing and a rear housing connected to the clutch housing. A transmission cavity for storing lubricating oil is provided between the clutch housing and the rear housing, and a transmission gear set is provided in the transmission cavity. The clutch There is an input shaft bearing on the circumferential inside of the housing and an output shaft bearing on the circumferential inside of the rear housing. The clutch housing has a bearing that is integrally formed on the inside of the clutch housing and can drain the lubricating oil in the gearbox cavity to the input shaft. There is an input shaft bearing lubrication assembly on the outside of the bearing, and the rear housing is provided with an output shaft bearing lubrication assembly that is integrally formed on the inside of the rear housing and can drain the lubricating oil in the gearbox cavity to the outside of the output shaft bearing. The advantage is that the input shaft bearing lubrication assembly and the output shaft bearing lubrication assembly are integrally cast with the gearbox body, reducing additional production costs.

Description

A gearbox bearing lubrication structure

Technical field

The utility model belongs to the technical field of gearbox lubrication, and specifically relates to a gearbox bearing lubrication structure.

Background technique

In gearbox design, the design of the lubrication system is particularly important. The lubrication system can reduce the wear of gears, bearings and other moving parts, thereby reducing friction and power loss and increasing the service life of parts. However, in the current gearbox design, due to the complex structure of the lubrication system and poor lubrication effect, the production cost is too high. When the vehicle goes uphill or downhill, the gearbox oil level also changes, resulting in When the gearbox is operating under this working condition, the gearbox oil stirred up by the gear operation is difficult to flow through the above-mentioned bearings, which in turn affects the lubrication and cooling of the bearings, ultimately affecting the service life of the bearings, and even leading to early failure of the bearings. Reducing the service life of the gearbox.

In order to solve the shortcomings of existing technologies, people have conducted long-term exploration and proposed various solutions. For example, Chinese patent literature discloses an automobile gearbox lubrication mechanism [201210517351.0], which includes: an oil collection tank, an oil delivery tank and a mounting buckle, in which: a semi-open structure of the bottom of the oil collection tank and a semi-open structure of a bent type The oil delivery tank is connected, and the installation buckle is vertically connected to the oil delivery tank and located on the side of the bend near the oil collection tank.

The above solution solves the problem that the existing bearings cannot be lubricated to a certain extent, but this solution still has many shortcomings. For example, due to the internal space requirements of the gearbox, the size of the oil collection tank is small, and it only relies on collecting the lubrication stirred up by the rotation of the gear gear. If there is not enough oil, a full-pass reverse shaft hole is needed to collect the lubricating oil stirred up by the differential gear. The diameter of the reverse gear shaft needs to be relatively larger, and a full-pass oil hole needs to be processed inside, which leads to an increase in processing costs.

Contents of the invention

The purpose of this utility model is to provide a gearbox bearing lubrication structure to solve the above problems.

In order to achieve the above purpose, the utility model adopts the following technical solution: a gearbox bearing lubrication structure, including a clutch housing and a rear housing connected to the clutch housing, with a lubricating structure between the clutch housing and the rear housing. A gearbox cavity for storing lubricating oil, a gearbox gear set is provided in the gearbox cavity, an input shaft bearing is arranged on the circumferential inside of the clutch housing, and an input shaft bearing is provided on the circumferential inside of the rear housing. Output shaft bearing, the clutch housing is provided with an input shaft bearing lubrication component integrally formed inside the clutch housing and capable of draining the lubricating oil in the gearbox cavity to the outside of the input shaft bearing, and the rear housing There is an output shaft bearing lubrication component integrally formed on the inside of the rear housing and capable of draining the lubricating oil in the gearbox cavity to the outside of the output shaft bearing.

In the above-mentioned gearbox bearing lubrication structure, the input shaft bearing lubrication assembly includes a first oil collecting groove arranged inside the clutch housing, and one end of the first oil collecting groove is provided with a gearbox gear set close to the input One end of the shaft bearing corresponds to the oil collection port of the clutch housing. The first oil collection groove is connected to the first oil passage hole provided on the clutch housing, and the inside of the first oil passage hole is connected to the input shaft. The bearing is at the bottom of the input shaft bearing housing bore.

In the above-mentioned gearbox bearing lubrication structure, the first oil collecting groove is a cavity formed on the clutch housing by casting, and the front end of the first oil collecting groove is sealed by a bowl-shaped plug of the oil collecting groove. Blocking.

In the above-mentioned gearbox bearing lubrication structure, the first oil passage hole is machined from the side of the clutch housing, and the first oil passage hole penetrates the first oil collecting groove, and The outside of the first oil passage hole is blocked by a first bowl plug.

In the above-mentioned gearbox bearing lubrication structure, the output shaft bearing lubrication assembly includes a second oil collecting groove arranged inside the rear housing, and one end of the second oil collecting groove is provided with a gearbox gear set close to the output One end of the shaft bearing corresponds to the rear housing oil collection port. The second oil collection groove is connected to the second oil passage hole provided on the rear housing, and the inner side of the second oil passage hole is connected to the output shaft. Bearing at the bottom of the output shaft bearing housing hole.

In the above-mentioned gearbox bearing lubrication structure, the second oil collecting groove is formed on the rear housing by casting, the front end of the second oil collecting groove is blocked by a plug cover, and the rear housing The joint surface connected to the clutch housing is flush with the plug cover, and the clutch housing is provided with pressure ribs that abut against the plug cover.

In the above-mentioned gearbox bearing lubrication structure, the second oil passage hole is machined from the side of the rear housing, and the second oil passage hole penetrates the second oil collection groove, and the second oil passage hole is machined from the side of the rear housing. The outside of the second oil passage hole is blocked by a second bowl-shaped plug.

In the above-mentioned gearbox bearing lubrication structure, the gearbox gear set includes a constant mesh gear pair and a gear gear pair arranged in the gearbox cavity, and the constant mesh gear pair is connected to a The input shaft is in the input shaft bearing, and the gear gear pair is connected to the output shaft that passes through the output shaft bearing.

In the above-mentioned transmission bearing lubrication structure, the clutch housing oil collection port corresponds to the constant mesh gear pair, and the gear gear pair corresponds to the rear housing oil collection port.

In the above-mentioned gearbox bearing lubrication structure, the clutch housing and the rear housing are detachably connected, and the input shaft bearing and the output shaft bearing are coaxially arranged.

Compared with existing technology, the advantages of this utility model are:

1. The input shaft bearing lubrication assembly and the output shaft bearing lubrication assembly are integrally cast with the gearbox body, which greatly reduces additional production costs.

2. Using bowl-shaped plugs and plug caps to seal the oil collection groove and oil passage holes can further reduce costs and facilitate assembly.

3. The first oil collecting tank and the second oil collecting tank are partly composed of shells, so there will be no NVH problems caused by gear oil impact.

Description of the drawings

Figure 1 is an exploded view of the structure of the present utility model.

Figure 2 is a structural cross-sectional view of the utility model.

Figure 3 is a structural cross-sectional view of the utility model from another cross-sectional angle.

Figure 4 is a structural cross-sectional view of the utility model from another angle.

Figure 5 is a schematic structural diagram of the bowl-shaped plug of the present utility model.

Figure 6 is a schematic structural diagram of the plug cap in the present utility model.

In the figure: clutch housing 1, input shaft bearing 11, input shaft bearing lubrication assembly 12, first oil collection groove 121, clutch housing oil collection port 122, first oil passage hole 123, rear housing 2, output shaft bearing 21 , output shaft bearing lubrication assembly 22, second oil collection groove 221, rear housing oil collection port 222, second oil passage hole 223, transmission cavity 3, transmission gear set 31, constant mesh gear pair 311, gear gear Vice 312, input shaft 313, output shaft 314, oil collecting tank bowl plug 4, first bowl plug 5, plug cover 6, and second bowl plug 7.

Detailed ways

The utility model will be described in further detail below in conjunction with the accompanying drawings and specific implementation modes.

As shown in Figures 1 and 2, a gearbox bearing lubrication structure includes a clutch housing 1 and a rear housing 2 connected to the clutch housing 1. Between the clutch housing 1 and the rear housing 2, there is a The transmission cavity 3 stores lubricating oil, and the transmission cavity 3 is provided with a transmission gear set 31, the clutch housing 1 is provided with an input shaft bearing 11 on the circumferential inside, and the rear housing 2 is provided with an output on the circumferential inside. Shaft bearing 21, the clutch housing 1 is provided with an input shaft bearing lubrication assembly 12 that is integrally formed inside the clutch housing 1 and can drain the lubricating oil in the gearbox cavity 3 to the outside of the input shaft bearing 11, and communicates with the clutch housing. The input shaft bearing lubrication assembly 12 designed to be molded in one day can reduce production costs, and the rear housing 2 is integrally formed on the inside of the rear housing 2 and can drain the lubricating oil in the gearbox cavity 3 to the output shaft bearing. The output shaft bearing lubrication assembly 22 outside 21, the output shaft bearing lubrication assembly 22 and the rear housing 2 are integrally formed to further reduce costs.

Specifically, the input shaft bearing lubrication assembly 12 includes a first oil collecting groove 121 disposed inside the clutch housing 1 , wherein the first oil collecting groove 121 is arranged horizontally with the transmission gear set 31 , and one end of the first oil collecting groove 121 is provided with a The transmission gear set 31 is close to the clutch housing oil collection port 122 corresponding to one end of the input shaft bearing 11. The clutch housing oil collection port 122 can collect the lubricating oil stirred up by the transmission gear set 31 in the clutch housing 1 and the oil in the clutch. The lubricating oil on the inner wall surface of the housing 1 flows to the oil collection port 122 of the clutch housing through gravity. The first oil collection groove 121 is connected with the first oil passage hole 123 provided on the clutch housing 1, and the first oil passage hole 123 The inner side is connected to the bottom of the input shaft bearing 11 seat hole of the input shaft bearing 11 , and the lubricating oil can enter the bottom of the input shaft bearing 11 through the first oil passage hole 123 to lubricate and cool the input shaft bearing 11 .

Among them, the first oil collecting groove 121 is a cavity formed on the clutch housing 1 by casting. There is no NVH problem caused by gear oil impact, and there is no need to manufacture an additional oil collecting groove. There is no additional cost, and it is integrally molded. The casting method can improve the service life and reduce production costs, and the front end of the first oil collecting tank 121 is blocked by the oil collecting tank bowl plug 4. Since the oil collecting tank bowl plug 4 is a standard part, the cost is low and it can be easily assembled. Further The production cost is reduced and the first oil collecting tank 121 can be blocked.

As shown in Figures 2, 3, 5, and 6, preferably, the first oil passage hole 123 is machined from the side of the clutch housing 1. There is no need to manufacture additional oil passage holes, and there is no additional oil passage hole. Cost, wherein the first oil passage hole 123 is arranged perpendicularly to the first oil collection groove 121, and the first oil passage hole 123 penetrates the first oil collection groove 121, and the outside of the first oil passage hole 123 is blocked by the first bowl-shaped plug 5, Since the first bowl-shaped plug 5 is a standard part, the production cost is low and can be easily assembled. It can block the first oil passage hole 123 while reducing the production cost.

Further, the output shaft bearing lubrication assembly 22 includes a second oil collection groove 221 disposed inside the rear housing 2 , wherein the second oil collection groove 221 is disposed horizontally with the transmission gear set 31 , and one end of the second oil collection groove 221 is provided with the transmission. The box gear set 31 is close to the rear housing oil collection port 222 corresponding to one end of the output shaft bearing 21. The rear housing oil collection port 222 can collect the lubricating oil stirred up by the transmission gear set 31 in the rear housing 2 and the oil in the rear housing. The lubricating oil in the inner wall of the body 2 flows through the rear housing oil collection port 222 due to gravity. The second oil collection groove 221 is connected with the second oil passage hole 223 provided on the rear housing 2. The lubrication oil in the second oil collection groove 221 Oil can flow into the second oil passage hole 223, and the inside of the second oil passage hole 223 is connected to the bottom of the output shaft bearing 21 seat hole of the output shaft bearing 21. The lubricating oil can flow to the bottom of the output shaft bearing 21 through the second oil passage hole 223. , so that the output shaft bearing 21 can be lubricated and cooled.

Among them, the second oil collecting groove 221 is formed on the rear housing 2 by casting, so there is no NVH problem caused by gear oil impact, and there is no need to manufacture an additional oil collecting groove, and there is no additional cost, and the one-piece casting method can To improve the service life and reduce production costs, the front end of the second oil collecting tank 221 is blocked by the plug cover 6. Since the plug cover 6 is a standard part, the cost is low and can be easily assembled, which reduces the production cost, and the rear housing 2 and the clutch The connecting surface of the housing 1 is flush with the plug cover 6. The clutch housing 1 is provided with pressure ribs that abut against the plug cover 6. The pressure ribs can ensure that the plug cover 6 will not drain from the second oil collection tank after the gearbox is assembled. 221 prolapsed from the mouth.

As shown in Figures 2, 3, and 4, the second oil passage hole 223 is machined from the side of the rear housing 2. There is no need to manufacture additional oil passage holes, no additional cost, and the second oil passage hole 223 is machined from the side of the rear housing 2. The passage hole 223 penetrates the second oil collecting groove 221, and the outside of the second oil passage hole 223 is blocked by the second bowl-shaped plug 7. The second bowl-shaped plug 7 is a standard part, so the manufacturing cost is low and it can be easily assembled. Further Production costs are reduced.

Among them, the gearbox gear set 31 includes a constant mesh gear pair 311 and a gear gear pair 312 arranged in the gearbox cavity 3, and the constant mesh gear pair 311 is connected to the input shaft 313 that penetrates the input shaft bearing 11. And the gear gear pair 312 is connected to the output shaft 314 that penetrates the output shaft bearing 21 .

Specifically, the clutch housing oil collection port 122 corresponds to the constant mesh gear pair 311. The clutch housing oil collection port 122 is mainly used to collect the lubricating oil stirred up by the constant mesh gear pair 311 to lubricate and cool the input shaft bearing 11. , and the gear gear pair 312 corresponds to the rear housing oil collection port 222. The rear housing oil collection port 222 mainly collects the lubricating oil stirred up by the gear gear pair 312 to lubricate and cool the output shaft bearing 21.

As shown in FIG. 2 , the clutch housing 1 and the rear housing 2 are detachably connected, and the input shaft bearing 11 and the output shaft bearing 21 are coaxially arranged.

The principle of this embodiment is that when the constant mesh gear pair 311 in the clutch housing 1 rotates, the lubricating oil stirred up by the constant mesh gear pair 311 will flow into the input shaft bearing lubrication assembly 12 integrally cast in the clutch housing 1 The clutch housing oil collection port 122, when the lubricating oil level in the first oil collection groove 121 is higher than the first oil passage hole 123, the lubricating oil will enter the input shaft bearing 11 through the first oil passage hole 123, and the input shaft will The shaft bearing 11 is lubricated and cooled. When the gear gear pair 312 in the rear housing 2 rotates, the lubricating oil stirred up by the gear gear pair 312 will flow into the output shaft bearing lubrication assembly 22 integrally cast in the rear housing 2 The rear housing oil collection port 222 in the second oil collection groove 221, when the lubricating oil level in the second oil collection groove 221 is higher than the second oil passage hole 223, the lubricating oil will enter the output shaft bearing 21 through the second oil passage hole 223. The output shaft bearing 21 is lubricated and cooled.

The specific embodiments described herein are merely illustrations of the spirit of the present invention. Those skilled in the technical field to which this utility model belongs can make various modifications or additions to the described specific embodiments or adopt similar replacement methods, but this will not deviate from the spirit of the utility model or exceed the appended claims. defined range.

Although this article uses the clutch housing 1, the input shaft bearing 11, the input shaft bearing lubrication assembly 12, the first oil collecting groove 121, the clutch housing oil collecting port 122, the first oil passage hole 123, the rear housing 2, Output shaft bearing 21, output shaft bearing lubrication assembly 22, second oil collection groove 221, rear housing oil collection port 222, second oil passage hole 223, transmission cavity 3, transmission gear set 31, constant mesh gear pair 311 , gear pair 312, input shaft 313, output shaft 314, oil collection tank bowl plug 4, first bowl plug 5, plug cover 6, second bowl plug 7 and other terms, but the use of other terms is not excluded. possibility. The use of these terms is only for the purpose of describing and explaining the essence of the present invention more conveniently; interpreting them as any additional restrictions is contrary to the spirit of the present invention.

Claims (10)

1. The utility model provides a gearbox bearing lubricating structure, includes clutch housing (1) and with the back casing (2) that clutch housing (1) links to each other, be equipped with gearbox cavity (3) that are used for depositing lubricating oil between clutch housing (1) and back casing (2), just gearbox cavity (3) in be equipped with gearbox gear group (31), clutch housing (1) circumference inboard be equipped with input shaft bearing (11) and back casing (2) circumference inboard be equipped with output shaft bearing (21), its characterized in that clutch housing (1) on be equipped with integrated into one piece in clutch housing (1) inboard and can be with input shaft bearing lubricating assembly (12) in the lubricating oil drainage to the input shaft bearing (11) outside in gearbox cavity (3), just back casing (2) on be equipped with integrated into one piece in back casing (2) inboard and can be with lubricating oil drainage to output shaft bearing lubricating assembly (22) in the output shaft bearing (21) outside in gearbox cavity (3).

2. The transmission bearing lubrication structure according to claim 1, wherein the input shaft bearing lubrication assembly (12) comprises a first oil collecting groove (121) arranged on the inner side of the clutch housing (1), one end of the first oil collecting groove (121) is provided with a clutch housing oil collecting port (122) corresponding to one end, close to the input shaft bearing (11), of the transmission gear set (31), the first oil collecting groove (121) is communicated with a first oil duct hole (123) formed in the clutch housing (1), and the inner side of the first oil duct hole (123) is connected to the bottom of a seat hole of the input shaft bearing (11).

3. A transmission bearing lubrication arrangement according to claim 2, characterized in that the first oil sump (121) is a cavity formed in the clutch housing (1) by casting, and that the front end of the first oil sump (121) is plugged by an oil sump bowl plug (4).

4. The lubricating structure for the gearbox bearing according to claim 2, wherein the first oil passage hole (123) is machined in a machining mode through the side face of the clutch housing (1), the first oil passage hole (123) penetrates through the first oil collecting groove (121), and the outer side of the first oil passage hole (123) is plugged through the first bowl-shaped plug (5).

5. A transmission bearing lubrication structure according to claim 2, 3 or 4, wherein the output shaft bearing lubrication assembly (22) comprises a second oil sump (221) arranged inside the rear housing (2), one end of the second oil sump (221) is provided with a rear housing oil collecting port (222) corresponding to one end of the transmission gear set (31) close to the output shaft bearing (21), the second oil sump (221) is communicated with a second oil duct hole (223) arranged on the rear housing (2), and the inner side of the second oil duct hole (223) is connected to the bottom of a seat hole of the output shaft bearing (21).

6. The transmission bearing lubrication structure according to claim 5, wherein the second oil collecting groove (221) is formed on the rear housing (2) in a casting manner, the front end of the second oil collecting groove (221) is plugged by a plugging cover (6), the joint surface of the rear housing (2) and the clutch housing (1) is flush with the plugging cover (6), and the clutch housing (1) is provided with a rib which abuts against the plugging cover (6).

7. The lubrication structure of a transmission bearing according to claim 5, wherein the second oil passage hole (223) is machined in a machining manner from a side surface of the rear housing (2), the second oil passage hole (223) penetrates through the second oil sump (221), and an outer side of the second oil passage hole (223) is plugged by the second bowl-shaped plug (7).

8. The transmission bearing lubrication structure according to claim 5, wherein the transmission gear set (31) comprises a constant mesh gear pair (311) and a gear pair (312) which are arranged in the transmission cavity (3), the constant mesh gear pair (311) is connected with an input shaft (313) penetrating through the input shaft bearing (11), and the gear pair (312) is connected with an output shaft (314) penetrating through the output shaft bearing (21).

9. The transmission bearing lubrication structure according to claim 8, wherein the clutch housing oil collecting port (122) corresponds to a constant mesh gear pair (311), and the gear pair (312) corresponds to a rear housing oil collecting port (222).

10. A transmission bearing lubrication arrangement according to claim 1, characterized in that the clutch housing (1) and the rear housing (2) are detachably connected and that the input shaft bearing (11) and the output shaft bearing (21) are coaxially arranged.