CN216520860U - Oil pump for friction plate lubricating system of gearbox brake - Google Patents
Oil pump for friction plate lubricating system of gearbox brake Download PDFInfo
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- CN216520860U CN216520860U CN202122065613.1U CN202122065613U CN216520860U CN 216520860 U CN216520860 U CN 216520860U CN 202122065613 U CN202122065613 U CN 202122065613U CN 216520860 U CN216520860 U CN 216520860U
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Abstract
The utility model relates to an oil pump for a friction plate lubricating system of a gearbox brake, belonging to the technical field of lubricating oil pumps; the transmission brake pump comprises a pump body and a pump cover, wherein a connecting hole connected with a transmission brake is formed in the pump body, and the front end surface of the pump body is a matching surface connected with the transmission brake; a rotor shaft is arranged in the pump body, an inner rotor and an outer rotor are sequentially sleeved on the outer side of the rotor shaft, the pump cover is connected with the pump body, and the inner rotor and the outer rotor are arranged between the pump cover and the pump body; the upper end of the meshed area of the inner rotor and the outer rotor is an oil outlet cavity, the lower end of the meshed area of the inner rotor and the outer rotor is an oil inlet cavity, the front end face of the pump body is provided with an oil outlet groove and an oil inlet groove, the oil outlet groove extends on the upper part of the front end face of the pump body, the oil inlet groove extends on the lower part of the front end face of the pump body, the oil inlet groove is connected with the oil inlet cavity through an oil inlet channel, and the oil outlet groove is connected with the oil outlet cavity through an oil outlet channel; the problem of the big discharge capacity lubricating oil pump that is used for the supporting use of gearbox at present is great is solved.
Description
Technical Field
The utility model belongs to the technical field of lubricating oil pumps, and particularly relates to an oil pump for a friction plate lubricating system of a gearbox brake.
Background
Along with the rapid development of industries such as automobiles, engineering machinery, agricultural machinery and the like in China in recent years, the requirements of a transmission, particularly an automatic transmission, are increased, the number of lubricating oil pumps with large discharge capacity matched with the transmission is large, the technology is mature, the lubricating area of certain parts in the transmission is small, if the oil supply flow is too large, the oil temperature in a narrow space is gradually increased, the transmission fails to work normally after being used for a long time, therefore, a safety valve device needs to be added in the oil pump, the volume of an oil pump body is increased, and the space of the transmission is limited, so that the scheme cannot be realized.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art and provides an oil pump for a friction plate lubricating system of a gearbox brake; the problem of the big discharge capacity lubricating oil pump volume that is used for the supporting use of gearbox at present is great is solved.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
An oil pump for a friction plate lubricating system of a gearbox brake comprises a pump body and a pump cover, wherein a connecting hole connected with the gearbox brake is formed in the pump body, and the front end face of the pump body is a matching surface connected with the gearbox brake;
the pump body is provided with a rotor shaft through hole which is penetrated through from front to back, a mounting groove is formed in the rear end outlet of the rotor shaft through hole, the mounting groove and the rotor shaft through hole are eccentrically arranged, a rotor shaft is inserted in the rotor shaft through hole, an outer rotor and an inner rotor which are meshed with each other are arranged in the mounting groove, the inner rotor is fixedly connected with the rotor shaft, the rear end face of the pump body at the mounting groove is detachably connected with a pump cover through screws, and the front end face and the rear end face of the outer rotor and the front end face and the rear end face of the inner rotor are respectively in contact fit with the bottom face of the mounting groove and the end face of the pump cover;
the utility model discloses a pump body, including inner rotor and outer rotor, the regional upper end of inner rotor and outer rotor engaged with is for producing oil chamber, and the lower extreme is the oil feed chamber, is provided with out oil passageway and oil feed channel in the pump body, the lower extreme and the oil feed chamber of producing oil passageway are linked together, and the upper end and the oil feed chamber of oil feed channel are linked together, the preceding terminal surface of the pump body is provided with out oil groove and oil feed tank, the upper portion of the terminal surface extends the setting before the oil groove at the pump body, and the lower part of terminal surface extends the setting before the pump body in the oil feed tank, the oil feed tank is connected with the oil feed channel, and it is connected with the oil feed channel to produce the oil groove.
Further, the inner diameter of the mounting groove is larger than that of the through hole of the rotor shaft.
Further, one end of the rotor shaft is provided with a fixed connection structure such as an external spline connected with the prime mover, and the end provided with the fixed connection structure is positioned outside the front end face of the pump body.
Furthermore, the outer rotor and the inner rotor are arranged eccentrically, and the number of the inner teeth and the outer teeth of the inner rotor is one less than that of the outer teeth of the outer rotor.
Furthermore, a threaded hole is formed in the pump body, a screw through hole is formed in the pump cover, and a screw penetrates through the screw through hole in the pump cover to be connected with the threaded hole in the pump body.
Furthermore, a gasket is arranged between the screw and the pump cover.
Furthermore, an O-shaped ring mounting groove is formed in the rear end face of the pump body, is positioned on the outer side of the mounting groove and is coaxial with the mounting groove; and an O-shaped ring is arranged in the O-shaped ring mounting groove and tightly pressed between the pump cover and the pump body.
Furthermore, a process through hole is formed in the upper end of the oil outlet channel, an outlet in the upper end of the process through hole is formed in the upper end face of the pump body, the lower end of the process through hole is communicated with the oil outlet channel, and the outlet in the upper end of the process through hole is sealed through an inner hexagonal plug; therefore, the lower end of the oil inlet channel is provided with a process through hole, the lower end outlet of the process through hole is formed in the lower end face of the pump body, the upper end of the process through hole is communicated with the oil inlet channel, and the lower end outlet of the process through hole is sealed by an inner hexagonal plug.
Furthermore, the uppermost end of the oil outlet groove is positioned at the uppermost position of the front end surface of the pump body; the lowest end of the oil inlet groove is positioned at the lowest end of the front end surface of the pump body.
Compared with the prior art, the utility model has the following beneficial effects:
according to the oil pump provided by the utility model, the structure connected with the gearbox is directly integrated with the oil pump, so that the space of the connecting structure can be saved, and the overall size is reduced; the pump body directly pumps oil through the inner rotor and the outer rotor without other parts, so that the space is saved; the matching surface is lubricated and cooled through the oil inlet groove and the oil outlet groove, the continuous circulation of oil can be realized by the continuous running of the inner rotor and the outer rotor, and the matching surface is sufficiently lubricated and cooled; through control accuracy and clearance, can make the oil pump accomplish littleer volume, can also guarantee the higher volumetric efficiency of oil pump simultaneously.
Drawings
The utility model is described in further detail below with reference to the accompanying drawings:
FIG. 1 is a schematic overall forward structural view of the present invention;
FIG. 2 is a rear view of the utility model in section;
FIG. 3 is a sectional view A-A of FIG. 2;
FIG. 4 is a cross-sectional view B-B of FIG. 3;
wherein, 1 is the connecting hole, 2 is the pump body, 3 is the pump cover, 4 is the rotor shaft, 5 is the inner rotor, 6 is the outer rotor, 7 is O shape circle mounting groove, 8 is the O shape circle, 9 is the screw, 10 is the packing ring, 11 is the oil outlet chamber, 12 is the oil inlet chamber, 13 is the oil outlet passageway, 14 is the oil inlet passageway, 15 is interior hexagonal end cap, 16 is the oil outlet groove, 17 is the oil inlet groove.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
As shown in fig. 1 to 4, the utility model provides an oil pump for a friction plate lubrication system of a transmission brake, which comprises a pump body 2 and a pump cover 3, wherein a connecting hole 1 connected with the transmission brake is formed in the pump body 2, the front end surface of the pump body 2 is a matching surface connected with the transmission brake, and the matching surface is lubricated and cooled by pumping oil and absorbing oil of the oil pump.
The rear end face of the pump body 2 is provided with a cylindrical mounting groove and a rotor shaft through hole. The rotor shaft via hole is link up with the front and back terminal surface of the pump body 2 mutually, the mounting groove sets up in the rear end exit of rotor shaft via hole and mounting groove and rotor shaft via hole eccentric settings, and the internal diameter of mounting groove is greater than the internal diameter of rotor shaft via hole.
A rotor shaft 4 is inserted into the rotor shaft through hole, one end of the rotor shaft 4 is provided with a fixed connection structure such as an external spline connected with a prime mover, and the end provided with the fixed connection structure is positioned outside the front end face of the pump body 2; the other end of rotor shaft 4 is located the mounting groove, be provided with inner rotor 5 in the mounting groove, inner rotor 5 detachably cup joints in the outside of rotor shaft 4 and with rotor shaft 4 fixed connection, rotor shaft 4 drives inner rotor 5 and rotates together.
The outer side of the inner rotor 5 is sleeved with an outer rotor 6, and the outer rotor 6 and the inner rotor 5 are arranged in an eccentric mode. The inner rotor 5 is provided with seven outer teeth, the outer rotor 6 is provided with eight inner teeth, and the outer teeth of the inner rotor 5 are meshed with the inner teeth of the outer rotor 6.
The outer rotor 6 is arranged in the mounting groove and is arranged coaxially with the mounting groove.
The length dimension of the inner rotor 5 and the length dimension of the outer rotor 6 along the axial direction are the same and the length dimension is equal to the axial depth of the mounting groove, and the front end surfaces of the inner rotor 5 and the outer rotor 6 are in contact fit with the bottom end surface of the mounting groove.
The mounting groove department of the 2 rear end faces of the pump body is provided with a pump cover 3, be provided with three screw holes on the pump body 2, be provided with three screw via holes on the pump cover 3, screw 9 passes the screw via hole on the pump cover 3 and is connected with the screw hole on the pump body 2 to be connected pump cover 3 and pump body 2 looks fixed connection.
And a gasket 10 is arranged between the screw 9 and the pump cover 3.
And an O-shaped ring mounting groove 7 is formed in the rear end face of the pump body 2, and the O-shaped ring mounting groove 7 is located on the outer side of the mounting groove and is coaxial with the mounting groove. An O-shaped ring 8 is arranged in the O-shaped ring mounting groove 7, and the O-shaped ring 8 is tightly pressed between the pump cover 3 and the pump body 2 to ensure the sealing property of the joint of the pump cover 3 and the pump body 2 and prevent oil from overflowing from the joint of the pump cover 3 and the pump body 2.
The rear end faces of the inner rotor 5 and the outer rotor 6 are in contact fit with the pump cover 3.
The upper end of the meshed area of the inner rotor 5 and the outer rotor 6 is an oil outlet cavity 11, and the lower end is an oil inlet cavity 12. An oil outlet channel 13 and an oil inlet channel 14 are arranged in the pump body 2, and the lower end of the oil outlet channel 13 is communicated with the oil outlet cavity 11; the upper end of the oil inlet channel 14 is communicated with the oil inlet cavity 12.
An oil outlet groove 16 and an oil inlet groove 17 are formed in the front end face of the pump body 2, the oil outlet groove 16 extends from the upper portion of the front end face of the pump body 2 and passes through the connecting hole 1, and the uppermost end of the oil outlet groove 16 is located at the uppermost end of the front end face of the pump body 2; the oil inlet groove 17 extends from the lower portion of the front end face of the pump body 2, and the lowest end of the oil inlet groove 17 is located at the lowest end position of the front end face of the pump body 2.
The oil inlet groove 17 is communicated with the upper end of the oil inlet channel 14, and the oil outlet groove 16 is communicated with the lower end of the oil outlet channel 13. A process through hole is formed in the upper end of the oil outlet channel 13, an outlet at the upper end of the process through hole is formed in the upper end face of the pump body 2, the lower end of the process through hole is communicated with the oil outlet channel 13, and the outlet at the upper end of the process through hole is sealed through an inner hexagonal plug 15; therefore, the lower end of the oil inlet channel 14 is provided with a process through hole, the lower end outlet of the process through hole is arranged on the lower end face of the pump body 2, the upper end of the process through hole is communicated with the oil inlet channel 14, and the lower end outlet of the process through hole is sealed by an inner hexagonal plug 15.
An oil control channel is arranged at the lowest end of the oil outlet groove 16, the lower end of the oil control channel is communicated with the oil outlet groove 16, an upper end outlet of the oil control channel is arranged on the upper end face of the pump body 2, and an inner hexagonal plug 15 is arranged at an upper end outlet of the oil control channel.
The working principle of the utility model is as follows:
the rotor shaft 4 is driven by the prime mover to rotate, and the oil in the oil inlet chamber 12 is pressed into the oil outlet chamber 11 by the interaction between the inner rotor 5 and the outer rotor 6.
Because the oil inlet groove 17 is connected with the oil inlet cavity 12 through the oil inlet channel 14, the oil outlet groove 16 is connected with the oil outlet cavity 11 through the oil outlet channel 13, oil discharged from the oil outlet cavity 11 is discharged into the oil outlet groove 16 through the oil outlet channel 13, the oil in the oil outlet groove 16 lubricates and cools the matching surface, the cooled oil is recovered by the oil inlet groove 17 and flows back to the oil inlet cavity 12 through the oil inlet channel 14, and the oil is discharged from the oil outlet groove 16 again through the above process to lubricate and cool the matching surface.
Through the installation and the dismantlement of the interior hexagonal end cap 15 of accuse oil passageway exit, can control the oil mass in the cooperation face that the pump body 2 is connected with the gearbox stopper, when the oil mass was too big, can pull down interior hexagonal end cap 15, with some fluid discharge, when the oil mass was not enough, can inside supplementary fluid through accuse oil passageway. Through the adjustment, the oil is always in a proper amount.
In order to reduce the phenomenon that the lubrication is insufficient or even unable to lubricate the gearbox caused by the internal leakage of oil, the axial and radial gaps between the pump body 2 and the outer rotor 6 are small, the planeness, parallelism and the position degree of each hole are required to be more than 6 grades, the planeness and the jumping tolerance of the inner rotor and the outer rotor are required to be more than 5 grades, the tolerance of the tooth profile contour degree is within 0.02, the meshing gap between the inner rotor and the outer rotor is 0.05-0.08, the positioning is accurate in the machining process, and the machining precision of parts is ensured.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. An oil pump for a transmission brake friction plate lubrication system, characterized by: the transmission brake pump comprises a pump body and a pump cover, wherein a connecting hole connected with a transmission brake is formed in the pump body, and the front end surface of the pump body is a matching surface connected with the transmission brake; the pump body is provided with a rotor shaft through hole which is penetrated through from front to back, a mounting groove is formed in the rear end outlet of the rotor shaft through hole, the mounting groove and the rotor shaft through hole are eccentrically arranged, a rotor shaft is inserted in the rotor shaft through hole, an outer rotor and an inner rotor which are meshed with each other are arranged in the mounting groove, the inner rotor is fixedly connected with the rotor shaft, the rear end face of the pump body at the mounting groove is detachably connected with a pump cover through screws, and the front end face and the rear end face of the outer rotor and the front end face and the rear end face of the inner rotor are respectively in contact fit with the bottom face of the mounting groove and the end face of the pump cover; the utility model discloses a pump body, including the inner rotor, the outer rotor, the inner rotor is provided with the oil inlet channel, and the lower extreme is provided with the oil outlet channel, and the oil inlet channel is provided with the oil outlet channel, and the upper end of oil outlet channel is linked together with the oil outlet cavity, and the upper end and the oil inlet cavity of oil inlet channel are linked together, the preceding terminal surface of the pump body is provided with out oil groove and oil feed tank, the upper portion of oil outlet groove terminal surface extends the setting before the pump body, and the lower part of oil feed tank terminal surface extends the setting before the pump body, the oil feed tank is linked together with the oil inlet channel, and it is linked together with the oil outlet channel to go out the oil groove.
2. An oil pump for a transmission brake friction plate lubrication system according to claim 1 wherein: the inner diameter of the mounting groove is larger than that of the rotor shaft via hole.
3. An oil pump for a transmission brake friction plate lubrication system according to claim 1, characterised in that: and one end of the rotor shaft is provided with an external spline fixed connection structure connected with the prime motor, and the other end provided with the fixed connection structure is positioned on the outer side of the front end face of the pump body.
4. An oil pump for a transmission brake friction plate lubrication system according to claim 1 wherein: the outer rotor and the inner rotor are arranged eccentrically, and the number of the inner teeth and the outer teeth of the inner rotor is one less than that of the outer teeth of the outer rotor.
5. An oil pump for a transmission brake friction plate lubrication system according to claim 1 wherein: the pump body is provided with a threaded hole, the pump cover is provided with a screw through hole, and a screw penetrates through the screw through hole in the pump cover to be connected with the threaded hole in the pump body.
6. An oil pump for a transmission brake friction plate lubrication system according to claim 5 wherein: and a gasket is arranged between the screw and the pump cover.
7. An oil pump for a transmission brake friction plate lubrication system according to claim 1, characterised in that: an O-shaped ring mounting groove is formed in the rear end face of the pump body, is positioned on the outer side of the mounting groove and is coaxial with the mounting groove; and an O-shaped ring is arranged in the O-shaped ring mounting groove and tightly pressed between the pump cover and the pump body.
8. An oil pump for a transmission brake friction plate lubrication system according to claim 1 wherein: a process through hole is formed in the upper end of the oil outlet channel, an outlet in the upper end of the process through hole is formed in the upper end face of the pump body, the lower end of the process through hole is communicated with the oil outlet channel, and the outlet in the upper end of the process through hole is sealed through an inner hexagonal plug; therefore, the lower end of the oil inlet channel is provided with a process through hole, the lower end outlet of the process through hole is formed in the lower end face of the pump body, the upper end of the process through hole is communicated with the oil inlet channel, and the lower end outlet of the process through hole is sealed by an inner hexagonal plug.
9. An oil pump for a transmission brake friction plate lubrication system according to claim 1 wherein: the uppermost end of the oil outlet groove is positioned at the uppermost position of the front end surface of the pump body; the lowest end of the oil inlet groove is positioned at the lowest end of the front end surface of the pump body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122065613.1U CN216520860U (en) | 2021-08-30 | 2021-08-30 | Oil pump for friction plate lubricating system of gearbox brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122065613.1U CN216520860U (en) | 2021-08-30 | 2021-08-30 | Oil pump for friction plate lubricating system of gearbox brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216520860U true CN216520860U (en) | 2022-05-13 |
Family
ID=81516557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122065613.1U Active CN216520860U (en) | 2021-08-30 | 2021-08-30 | Oil pump for friction plate lubricating system of gearbox brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216520860U (en) |
-
2021
- 2021-08-30 CN CN202122065613.1U patent/CN216520860U/en active Active
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