CN216812801U

CN216812801U - Lubricating system, transmission and automobile

Info

Publication number: CN216812801U
Application number: CN202220352930.3U
Authority: CN
Inventors: 刘娟; 李振国; 徐国林; 惠帅平; 孙丽强; 张洪霞
Original assignee: FAW Jiefang Automotive Co Ltd
Current assignee: FAW Jiefang Automotive Co Ltd
Priority date: 2022-02-22
Filing date: 2022-02-22
Publication date: 2022-06-24
Anticipated expiration: 2032-02-22

Abstract

The utility model belongs to the technical field of heavy transmission lubrication, and discloses a lubricating system, a transmission and an automobile, wherein the lubricating system comprises a shell and an oil pump, the shell is provided with a main oil gallery, a transition oil cavity, a first branch oil gallery and a second branch oil gallery, the main oil gallery is communicated with the transition oil cavity, the first branch oil gallery is communicated with the main oil gallery and a first bearing hole, and the second branch oil gallery is communicated with the main oil gallery and a second bearing hole; the oil pump includes the pump body, drive division, inhales oil duct and oil outlet, and the pump body is connected in the casing, and the drive division is arranged in the inner chamber of the pump body, inhales the inner chamber that oil duct intercommunication oil supply unit and pump body, goes out the inner chamber that oil duct intercommunication transition oil pocket and pump body, and drive division connection secondary shaft, secondary shaft drive division rotate, inhales lubricating oil from oil supply unit. The lubricating system realizes reasonable temporary storage and distribution of lubricating oil, prevents oil leakage, and solves the problems of large part number and low assembly efficiency of the existing lubricating system.

Description

Lubricating system, transmission and automobile

Technical Field

The utility model relates to the technical field of lubrication of heavy transmissions, in particular to a lubrication system, a transmission and an automobile.

Background

Transmissions, which are important components in automotive transmissions, rely on gear pairs with different gear ratios to vary the torque and speed of the engine output. The transmission is internally provided with a complex gear transmission structure, and in the operation process, the rotating speed of a transmission shaft is very high, and the rotating speed conversion frequency is very frequent, so that the high efficiency, low noise and durability of power transmission can be ensured only by lubricating oil. The traditional splash lubrication mode can not realize the accurate control of the lubricating oil quantity and the lubricating piece, so that the transmission has the defects of more lubricating oil quantity, high working oil temperature and large gear transmission efficiency loss. The oil supply system of the existing heavy-duty transmission is independently arranged by adopting an oil pump, lubricating oil is conveyed to a required position through an external oil pipe, and the function is realized by mutually matching a plurality of parts. The arrangement space and the position of the oil pipe have specific requirements, a lubricating system with a complex shape is formed, the manufacturing process is poor, and the oil pipe needs to be matched with a special bolt to form an oil way, so that a certain oil leakage risk exists.

In order to solve the above problems, the prior art provides an integrated disc assembly for a heavy-duty transmission, which integrates a lubricating oil passage and an oil pump on the same shell, and simplifies an oil supply system of the heavy-duty transmission, but each oil passage has a small size, only has a function of circulating lubricating oil, and is not provided with a transition oil cavity for temporarily storing lubricating oil, so that the integrated disc assembly has a defect in the aspect of reasonably temporarily storing and distributing branch lubricating oil.

Therefore, a lubrication system, a transmission and a vehicle are needed to solve the above problems.

SUMMERY OF THE UTILITY MODEL

According to one aspect of the utility model, the lubricating system is provided, the oil pump and the lubricating oil way are integrated in the shell, the assembly efficiency is improved, the transition oil cavity is arranged, the reasonable temporary storage and distribution of branch lubricating oil are realized, the oil leakage is prevented, and the problems that the existing automobile transmission lubricating system is large in number of parts, low in assembly efficiency and certain in oil leakage risk are solved.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a lubricating system comprises a shell and an oil pump, wherein the shell is provided with a main oil gallery, a transition oil cavity, a first branch oil gallery and a second branch oil gallery, the main oil gallery is communicated with the transition oil cavity, the first branch oil gallery is communicated with the main oil gallery and a first bearing hole, and the second branch oil gallery is communicated with the main oil gallery and a second bearing hole; the oil pump includes the pump body, drive division, inhales the oil duct and goes out the oil duct, the pump body connect in the casing, the drive division is located in the inner chamber of the pump body, inhale oil duct intercommunication oil supply unit with the inner chamber of the pump body, go out the oil duct intercommunication the transition oil pocket with the inner chamber of the pump body, the second shaft is connected to the drive division, the second shaft drives the drive division rotates, inhales lubricating oil from oil supply unit.

Optionally, the housing is further provided with a connecting oil duct, the connecting oil duct and the main oil duct are arranged at an included angle, and the first branch oil duct and the second branch oil duct are respectively communicated with the main oil duct through the connecting oil duct.

Optionally, the housing further has a spindle hole and a spindle hole oil passage, the spindle hole penetrates through a sidewall of the housing and is configured to be connected with a transmission spindle, and the spindle hole oil passage communicates the connection oil passage and the spindle hole.

Optionally, the lubricating system further comprises an oil sealing device, a step structure is arranged on the hole wall of the main shaft hole, and the oil sealing device is installed in the main shaft hole and abuts against the step structure.

Optionally, the housing is further provided with a main shaft hole oil return channel, the wall of the main shaft hole is provided with an oil containing groove, and the main shaft hole oil return channel is communicated with the oil containing groove and the transmission main shaft hole to convey lubricating oil at the oil seal to the main bearing.

Optionally, the oil pump still includes the pump cover, the pump cover closing cap the pump body opening sets up the locating hole, and the setting element wears to locate the locating hole with the pump body, be configured to the location the pump cover in pump body opening part.

Optionally, the pump cover is provided with fastening holes, and fastening pieces penetrate through the fastening holes and are connected to the pump body.

Optionally, the pump cover is provided with a pump cover oil groove, and when the pump cover covers the opening of the pump body, the pump cover oil groove is fastened to the second branch oil duct.

Optionally, the driving part comprises a driving shaft, an inner rotor and an outer rotor, the driving shaft is connected with the second bearing, the inner rotor is fixedly connected to one end of the driving shaft, the outer rotor is movably nested in the shell, and the inner rotor and the outer rotor are meshed with each other.

Optionally, the lubrication system further comprises a pressure relief valve mounted to the housing.

According to a further aspect of the present invention, there is provided a transmission comprising a first bearing and a second bearing, further comprising the lubrication system of any of the above aspects, the first branch oil gallery communicating the main oil gallery and the first bearing bore and configured to lubricate the first bearing;

the second branch oil passage communicates the main oil passage and the second bearing hole, and is configured to lubricate the second bearing.

According to yet another aspect of the present invention, there is provided an automobile including the transmission.

The utility model has the beneficial effects that:

the lubricating system provided by the utility model comprises a shell and an oil pump, wherein the shell is provided with a main oil duct, a transition oil cavity, a first branch oil duct and a second branch oil duct. Through the arrangement of the transition oil cavity, lubricating oil entering the lubricating system can be temporarily stored in the transition oil cavity. The oil pump comprises a pump body and a driving part, the driving part is connected with the second shaft, the second shaft rotates to drive the driving part to rotate, the pump body is driven to rotate, and lubricating oil in the oil suction channel enters the oil outlet channel and finally enters the transition oil cavity for subsequent distribution of the first branch oil channel and the second branch oil channel. The oil pump and the lubricating oil way are integrated in the shell, so that the assembly efficiency is improved, and the problems that the number of parts of the lubricating system of the conventional automobile transmission is large, the assembly efficiency is low, and a certain oil leakage risk exists are solved.

Drawings

FIG. 1 is a schematic illustration of a lubrication system and transmission component mounting provided by the present invention;

FIG. 2 is an isometric view of a lubrication system provided by the present invention;

FIG. 3 is a front view of the lubrication system provided by the present invention;

FIG. 4 is a rear view of the lubrication system provided by the present invention;

FIG. 5 is a front view of a pump cap of the lubrication system provided by the present invention;

FIG. 6 is a rear view of a pump cap for a lubrication system provided by the present invention.

In the figure:

100. a housing; 110. a main oil gallery; 120. a transition oil cavity; 130. a first branch oil duct; 140. a second branch oil gallery; 150. connecting the oil duct; 160. a spindle hole; 161. an oil containing groove; 170. a main shaft hole oil passage; 180. a main shaft hole oil return passage;

200. an oil pump; 210. a pump body; 220. a drive section; 221. a drive shaft; 222. an inner rotor; 223. an outer rotor; 230. an oil suction duct; 240. an oil outlet channel; 250. a pump cover; 251. a fastening hole; 252. a fastener; 253. positioning holes; 254. a positioning member; 255. a pump cover oil groove;

300. and (6) a pressure relief valve.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

Fig. 1 shows a schematic view of an installation of a lubrication system and a transmission component provided by the present invention, fig. 2 shows an isometric view of the lubrication system provided by the present invention, fig. 3 shows a front view of the lubrication system provided by the present invention, and fig. 4 shows a rear view of the lubrication system provided by the present invention. Referring to fig. 1, the present embodiment provides a transmission including the lubrication system provided by the present embodiment.

Specifically, referring to fig. 2-4, the present embodiment provides a lubrication system including a housing 100. The lubrication system is communicated with the first bearing hole and the second bearing hole and can provide lubrication for the first bearing and the second bearing.

With continued reference to fig. 2-4, the lubrication system provided in this embodiment further includes an oil pump 200, the oil pump 200 is connected to the housing 100, the housing 100 is provided with a plurality of lubricating oil passages communicating the first bearing hole and the second bearing hole, and the lubricating oil passages communicate the oil pump 200, the first bearing hole and the second bearing hole.

Specifically, the plurality of lubricating oil passages formed in the housing 100 include a main oil passage 110, a transition oil chamber 120, a first branch oil passage 130 and a second branch oil passage 140, the main oil passage 110 is communicated with the transition oil chamber 120, the first branch oil passage 130 is communicated with the main oil passage 110 and a first bearing hole, and the second branch oil passage 140 is communicated with the main oil passage 110 and a second bearing hole.

To be more specific, the transitional oil chamber 120 has a large volume, and the lubricating oil entering the lubricating oil passage on the housing 100 first enters the transitional oil chamber 120 and is then distributed to the first branch oil gallery 130 and the second branch oil gallery 140 via the main oil gallery 110. The transition oil cavity 120 can provide a temporary storage space for lubricating oil, so that the lubricating oil is convenient to distribute, and the oil leakage phenomenon is prevented.

More specifically, the housing 100 further defines a connecting oil passage 150, the connecting oil passage 150 is communicated with the main oil passage 110, the first branch oil passage 130 and the second branch oil passage 140 are respectively communicated with two sides of the connecting oil passage 150, and lubricating oil in the main oil passage 110 can flow into the first branch oil passage 130 and the second branch oil passage 140 on two sides through the connecting oil passage 150, so as to provide lubricating oil for the first bearing hole and the second bearing hole.

With continued reference to fig. 2-4, the housing 100 further defines a spindle hole 160 and a spindle hole oil passage 170, the spindle hole 160 penetrates through a sidewall of the housing 100 and is configured to connect to a transmission spindle, and the spindle hole oil passage 170 communicates with the connecting oil passage 150 and the spindle hole 160. The main shaft hole oil passage 170 can guide the lubricating oil in the connecting oil passage 150 into the main shaft hole 160, and provide lubrication for the rotation of the transmission main shaft.

Specifically, this lubricating system still includes oil seal, and the pore wall of main shaft hole 160 sets up the stair structure, and oil seal installs in main shaft hole 160, supports to lean on the stair structure, and this oil seal can block the lubricating oil circulation, prevents effectively that lubricating oil from revealing from main shaft hole 160. The oil seal device can select the oil seal part commonly used on the speed changer in the prior art, and the structure and the action principle are not described in detail.

More specifically, the housing 100 further has a main shaft hole oil return passage 180, the hole wall of the main shaft hole 160 has an oil containing groove 161, and the main shaft hole oil return passage 180 communicates the oil containing groove 161 with the transmission main shaft hole 160. This flourishing oil groove 161 is seted up in the stair structure below, and the lubricating oil that is blockked by oil sealing device flows back to this flourishing oil groove 161 through main shaft hole oil return 180 in, can lubricate for the bearing on the main shaft.

With reference to fig. 2 to 4, the oil pump 200 includes a pump body 210 and a driving portion 220, the pump body 210 is connected to the housing 100, the driving portion 220 is located in an inner cavity of the pump body 210, the oil pump 200 is provided with an oil suction channel 230 and an oil discharge channel 240 communicated with the inner cavity of the pump body 210, the oil suction channel 230 and the oil discharge channel 240 are respectively provided at two sides of the driving portion 220, the oil suction channel 230 is communicated with the oil supply device, the oil discharge channel 240 is communicated with the transition oil cavity 120, the driving portion 220 is connected to a second shaft, and the second shaft rotates to drive the driving portion 220 to rotate. When the driving portion 220 rotates, the oil in the oil suction passage 230 can flow to the oil discharge passage 240 and then to the transition oil chamber 120.

Specifically, the driving portion 220 includes a driving shaft 221, an inner rotor 222 and an outer rotor 223, the driving shaft 221 is connected to the second shaft, the inner rotor 222 is fixedly connected to one end of the driving shaft 221, the outer rotor 223 is movably nested in the housing 100, and the inner rotor 222 and the outer rotor 223 are engaged with each other to form a gerotor pump, so as to suck the lubricating oil from the oil supply device.

And particularly, one end of the driving shaft 221 is provided with a spline structure, the spline structure can be matched with an internal spline of the second shaft to fixedly connect the driving shaft 221 to the second shaft, and when the second shaft rotates, the driving part 220 is driven to rotate, so that the introduction of lubricating oil is realized.

Referring to fig. 2, the oil pump 200 further includes a pump cover 250 covering the opening of the pump body 210, and capable of covering the inner rotor 222 and the outer rotor 223 in the pump body 210 to prevent leakage of lubricating oil therein when the pump body 210 rotates.

Fig. 5 shows a front view of a pump cover of the lubrication system provided by the present invention, fig. 6 shows a rear view of the pump cover of the lubrication system provided by the present invention, and referring to fig. 5 and 6, a central hole is formed in the pump cover 250, through which the driving shaft 221 passes, and when the pump cover 250 covers the opening of the pump body 210, the driving shaft 221 can freely rotate in the central hole, and the inner rotor 222 and the outer rotor 223 in the pump body 210 are driven to rotate.

Specifically, the pump cover 250 defines a plurality of positioning holes 253, the positioning member 254 is disposed through the positioning holes 253 and the pump body 210, and the positioning holes 253 and the positioning member 254 are configured to position the pump cover 250 at the opening of the pump body 210. The positioning pins 254 may be selected from conventional positioning pins.

More specifically, the pump cover 250 is provided with fastening holes 251, and the fastening members 252 are inserted into the fastening holes 251 and connected to the pump body 210, so that the pump cover 250 is fixedly covered on the opening of the pump body 210. The fastener 252 may be selected from a fastening bolt of the prior art.

More specifically, the pump cover 250 is provided with a pump cover oil groove 255, and when the pump cover 250 covers the driving portion 220, the pump cover oil groove 255 is fastened to the second oil gallery 140. The pump cover oil sump 255 provides a passage for the lubricant to flow to the second bearing when it is engaged with the second oil gallery 140.

Preferably, the lubrication system provided by the present embodiment further comprises a pressure relief valve 300, the pressure relief valve 300 being mounted to the housing 100, the pressure relief valve 300 being configured to balance the pressure of the lubrication system. The pressure relief valve 300 is a pressure relief device in the prior art, belongs to a system safety mechanism, and can balance pressure through the pressure relief valve 300 when the pressure is too high.

The embodiment also provides an automobile comprising the transmission provided by the embodiment.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the utility model. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A lubrication system, comprising:

the oil gallery structure comprises a shell (100), wherein the shell (100) is provided with a main oil gallery (110), a transition oil cavity (120), a first branch oil gallery (130) and a second branch oil gallery (140), the main oil gallery (110) is communicated with the transition oil cavity (120), the first branch oil gallery (130) is communicated with the main oil gallery (110) and a first bearing hole, and the second branch oil gallery (140) is communicated with the main oil gallery (110) and a second bearing hole;

oil pump (200), including the pump body (210), drive division (220), inhale oil duct (230) and go out oil duct (240), the pump body (210) connect in casing (100), drive division (220) are located in the inner chamber of the pump body (210), inhale oil duct (230) intercommunication oil supply unit with the inner chamber of the pump body (210), go out oil duct (240) intercommunication transition oil pocket (120) with the inner chamber of the pump body (210), the second shaft is connected in drive division (220), the second shaft drives when drive division (220) rotate, inhales lubricating oil from oil supply unit.

2. The lubrication system according to claim 1, wherein the housing (100) further defines a connecting oil passage (150), the connecting oil passage (150) and the main oil passage (110) are arranged at an included angle, and the first branch oil passage (130) and the second branch oil passage (140) are respectively communicated with the main oil passage (110) through the connecting oil passage (150).

3. The lubrication system according to claim 2, wherein the housing (100) further defines a main shaft hole (160) and a main shaft hole oil passage (170), the main shaft hole (160) penetrates through a sidewall of the housing (100) and is configured to be connected with a transmission main shaft, and the main shaft hole oil passage (170) communicates the connecting oil passage (150) and the main shaft hole (160).

4. The lubrication system according to claim 3, further comprising an oil seal, wherein the bore wall of the spindle bore (160) is provided with a stepped formation, the oil seal being mounted within the spindle bore (160) against the stepped formation.

5. The lubrication system according to claim 4, wherein the housing (100) further defines a main shaft hole oil return channel (180), the wall of the main shaft hole (160) defines an oil containing groove (161), and the main shaft hole oil return channel (180) communicates the oil containing groove (161) with a main shaft hole of the transmission to deliver the lubricating oil at the oil seal to the main bearing.

6. The lubrication system according to claim 1, wherein the oil pump (200) further comprises a pump cover (250), the pump cover (250) covers the opening of the pump body (210) and defines a positioning hole (253), and a positioning member (254) is disposed through the positioning hole (253) and the pump body (210) and configured to position the pump cover (250) at the opening of the pump body (210).

7. The lubrication system according to claim 6, wherein the pump cover (250) is provided with fastening holes (251), and fasteners (252) are arranged in the fastening holes (251) and connected to the pump body (210).

8. The lubrication system according to claim 6, wherein the pump cover (250) is provided with a pump cover oil groove (255), and when the pump cover (250) covers the opening of the pump body (210), the pump cover oil groove (255) is buckled with the second branch oil passage (140).

9. The lubrication system according to claim 1, wherein the drive portion (220) comprises a drive shaft (221), an inner rotor (222) and an outer rotor (223), the drive shaft (221) is connected with the second shaft, the inner rotor (222) is fixedly connected with one end of the drive shaft (221), the outer rotor (223) is movably nested in the housing (100), and the inner rotor (222) and the outer rotor (223) are meshed with each other.

10. The lubrication system according to any of claims 1-9, further comprising a pressure relief valve (300), the pressure relief valve (300) being mounted to the housing (100).

11. A transmission comprising a first bearing and a second bearing, further comprising the lubrication system of any of claims 1-10, the first branch oil gallery (130) communicating the main oil gallery (110) and the first bearing bore and configured to lubricate the first bearing;

the second branch oil gallery (140) communicates the main oil gallery (110) and the second bearing hole, and is configured to lubricate the second bearing.

12. An automobile comprising the transmission of claim 11.