CN219530516U - Lubricating pump for hydrodynamic retarder - Google Patents
Lubricating pump for hydrodynamic retarder Download PDFInfo
- Publication number
- CN219530516U CN219530516U CN202321130746.5U CN202321130746U CN219530516U CN 219530516 U CN219530516 U CN 219530516U CN 202321130746 U CN202321130746 U CN 202321130746U CN 219530516 U CN219530516 U CN 219530516U
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- pump
- cover
- pump body
- oil
- hydrodynamic retarder
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Abstract
The utility model discloses a lubrication pump for a hydrodynamic retarder. The lubricating pump comprises a pump body, a pump cover, an outer rotor, an inner rotor, a pump shaft and an oil seal; the oil seal is arranged in the pump body, the inner rotor is connected with the pump shaft, the pump shaft passes through pump body mounting holes arranged on the oil seal and the pump body, the pump shaft is mounted and positioned with pump cover mounting holes arranged on the pump cover, and the pump cover is mounted on the pump body by using bolts; the inner rotor is engaged with the outer rotor and is installed in the pump body. Compared with the prior art, the hydraulic retarder has the advantages that when the hydraulic retarder runs in idle load, liquid can be continuously and effectively injected into the working cavity of the hydraulic retarder through the lubricating pump to lubricate and cool, meanwhile, the front-end high-pressure oil seal is lubricated through the axial oil duct, and the service life of the high-pressure oil seal is prolonged.
Description
Technical Field
The utility model relates to a hydraulic pump and a lubrication technology, in particular to a lubrication pump for a hydrodynamic retarder.
Background
When the hydraulic retarder is in a working state, liquid is pressed into the working cavity by air pressure, the hydraulic retarder generates braking torque, and meanwhile, the liquid also lubricates and dissipates heat of an internal bearing and an oil seal. When the hydraulic retarder stops working and runs empty, the liquid in the working cavity is emptied, and the bearing and the oil seal are in oil shortage and high temperature states for a long time. Additional liquid is required to enter the working chamber to lubricate and dissipate heat from the bearings and oil seals.
At present, the transmission structures of the hydrodynamic retarders of various factories are basically similar, and the hydrodynamic retarders are respectively provided with a gear pump, a vortex pump, a screw pump and the like, wherein the gear pump is complex in structure, the vortex pump and the screw pump have no volume change, when no liquid exists in the pump, the self-priming capability is poor, and the lubricating effect in practical application is not ideal. And no high-pressure oil seal at the front end of the hydrodynamic retarder is lubricated.
Disclosure of Invention
In view of the problems and drawbacks of the prior art, the present utility model provides a lubrication pump for a hydrodynamic retarder. The design adopts the structural principle of the inner-meshing cycloid pump, has the advantages of simple structure, large volume change and strong self-absorption capacity, and simultaneously opens the shaft core channel in the pump, so that liquid can be conveyed to the far end along the axial direction, thereby solving the lubrication of high-pressure oil seal.
The technical scheme adopted by the utility model is as follows: a lubrication pump for a hydrodynamic retarder comprises a pump body, a pump cover, an outer rotor, an inner rotor, a pump shaft and an oil seal; the inner rotor is connected with the pump shaft, the pump shaft penetrates through the oil seal and a pump body mounting hole formed in the pump body, and is mounted and positioned with a pump cover mounting hole formed in the pump cover, and the pump cover is mounted on the pump body by using bolts; the inner rotor is engaged with the outer rotor and is arranged in the pump body.
The beneficial effects of the utility model are as follows: compared with the prior art, the hydraulic retarder is capable of continuously and effectively injecting liquid into the working cavity of the hydraulic retarder to lubricate and cool when in idle running, and meanwhile, the front-end high-pressure oil seal is lubricated through the axial oil duct, so that the service life of the high-pressure oil seal is prolonged.
Drawings
FIG. 1 is a cross-sectional view of a lubrication pump of the present utility model;
FIG. 2 is a block diagram of the pump body of FIG. 1;
FIG. 3 is a block diagram of the pump cover of FIG. 1;
FIG. 4 is a block diagram of the pump shaft of FIG. 1;
FIG. 5 is an outline view of the inner rotor of FIG. 1;
FIG. 6 is a profile view of the outer rotor of FIG. 1;
fig. 7 is a schematic view partly in section of a lubrication pump installed in a hydrodynamic retarder.
Detailed Description
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
as shown in fig. 1, a lubrication pump for a hydrodynamic retarder includes a pump body 1, a pump cover 2, an outer rotor 3, an inner rotor 4, a pump shaft 5, and an oil seal 6; the inner rotor 4 is connected with the pump shaft 5 by a key 7, the pump shaft 5 passes through the oil seal 6, a pump body mounting hole 106 arranged on the pump body 1, and is mounted and positioned with a pump cover mounting hole 203 arranged on the pump cover 2, and the pump cover 2 is mounted on the pump body 1 by using a bolt; the inner rotor 4 is engaged with the outer rotor 3 (see fig. 5 and 6) and is mounted in the pump body 1.
As shown in fig. 2 and 7, the pump body 1 is provided with an oil outlet channel 102, an oil outlet 103 and a boss 107; wherein, the pump body 1 is provided with an oil outlet 103 in the vertical direction of the axis of the oil outlet channel 102, and the oil outlet 103 is coaxial with a discharge port 1001 arranged on the hydrodynamic retarder body 10; the lubrication pump is mounted on the axis of the hydrodynamic retarder body 10 by means of a boss 107.
As shown in fig. 3 and 7, the pump cover 2 is provided with an oil sump 201 communicating with the oil discharge chamber 105 of the pump body 1, and an in-cover oil passage 202 is provided in the pump cover 2, and the in-cover oil passage 202 communicates the oil sump 201 with the pump cover mounting hole 203.
As shown in fig. 4 and 7, the pump shaft 5 is provided with an in-shaft passage 501 in the axial direction.
The design principle of the utility model is as follows: the pump shaft 5 of the lubrication pump is connected with the main shaft 14 of the hydrodynamic retarder through the compression bolt 12, and when the main shaft 14 of the hydrodynamic retarder rotates, the pump shaft 5 of the lubrication pump is driven to work. The lubricating pump sucks the liquid in the liquid storage cavity of the hydrodynamic retarder into the oil suction cavity 104 of the pump body 1 from the oil suction channel 101 of the pump body 1, the outer rotor 3 and the inner rotor 4 of the lubricating pump relatively rotate to generate volume change, the liquid is brought into the oil discharge cavity 105 of the pump body 1 and enters the oil discharge channel 102 of the pump body 1, the front end of the oil discharge channel 102 of the pump body 1 is plugged by a plug 9 (see figure 1), the liquid is discharged from the oil outlet 103 of the pump body 1 to the discharge port 1001 of the hydrodynamic retarder main body 10, and the liquid enters the hydrodynamic retarder working cavity 11 to lubricate and cool the bearing 13.
At the same time, the liquid in the oil discharge chamber 105 of the pump body 1 is collected by the oil sump 201 of the pump cover 2 of the lubrication pump, and enters the in-shaft passage 501 of the pump shaft 5 of the lubrication pump through the in-cover oil passage 202 of the pump cover 2, and is discharged from the end of the pump shaft 5. The discharged liquid passes through a central through hole 1201 on the axis of the compression bolt 12 connected with the pump shaft 5, passes through a liquid through hole 1401 on the main shaft 14 of the hydraulic retarder connected with the compression bolt 12, passes through a lubrication channel 1501 on a spacer 15 sleeved with the main shaft 14 of the hydraulic retarder, and enters the high-pressure oil seal 16 of the hydraulic retarder to lubricate the oil lip of the high-pressure oil seal 16 of the hydraulic retarder.
The plug 9 (see fig. 1) at the front end of the oil outlet channel 102 of the pump body 1 can be replaced by a joint and a pipeline, and the joint and the pipeline can be led to other lubrication positions.
The liquid entering the working cavity 11 of the hydraulic retarder through the lubricating pump is discharged into the oil storage cavity of the hydraulic retarder by the oil discharging system of the hydraulic retarder, so that circulation is formed and heat generated by the bearing 13 is carried out.
The first bushing 8.1 is installed in the pump cover mounting hole 203 of the pump cover 2, and the second bushing 8.2 is installed in the pump body mounting hole 106 of the pump body 1, so that the capability of the lubricating pump for adapting to high rotation speed can be improved.
Claims (6)
1. A lubrication pump for a hydrodynamic retarder, characterized in that the lubrication pump comprises a pump body (1), a pump cover (2), an outer rotor (3), an inner rotor (4), a pump shaft (5) and an oil seal (6); the inner rotor (4) is connected with the pump shaft (5), the pump shaft (5) penetrates through the oil seal (6) and a pump body mounting hole (106) formed in the pump body (1), is mounted and positioned with a pump cover mounting hole (203) formed in the pump cover (2), and the pump cover (2) is mounted on the pump body (1) by using bolts; the inner rotor (4) is internally meshed with the outer rotor (3) and is arranged in the pump body (1).
2. A lubrication pump for a hydrodynamic retarder according to claim 1, characterized in that the inner rotor (4) is connected to the pump shaft (5) with a key (7).
3. A lubrication pump for a hydrodynamic retarder according to claim 2, characterized in that the pump shaft (5) is provided with an in-shaft channel (501) in the axial direction.
4. A lubrication pump for a hydrodynamic retarder according to claim 3, characterized in that the pump body (1) is provided with an oil outlet channel (102), an oil outlet (103) and a boss (107); an oil outlet (103) is arranged on the pump body (1) in the direction perpendicular to the axis of the oil outlet channel (102), and the oil outlet (103) is coaxial with a discharge port (1001) arranged on the hydrodynamic retarder main body (10); the lubrication pump is mounted on the axis of the hydrodynamic retarder body (10) by means of a boss (107).
5. A lubrication pump for a hydrodynamic retarder according to claim 4, characterized in that the pump cover (2) is provided with an oil sump (201) communicating with the oil discharge cavity (105) of the pump body (1), an oil passage (202) in the cover is provided in the pump cover (2), and the oil passage (202) in the cover communicates the oil sump (201) with the pump cover mounting hole (203).
6. A lubrication pump for a hydrodynamic retarder according to claim 5, characterized in that a first bushing (8.1) is mounted in a pump cover mounting hole (203) of the pump cover (2), and a second bushing (8.2) is mounted in a pump body mounting hole (106) of the pump body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321130746.5U CN219530516U (en) | 2023-05-12 | 2023-05-12 | Lubricating pump for hydrodynamic retarder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321130746.5U CN219530516U (en) | 2023-05-12 | 2023-05-12 | Lubricating pump for hydrodynamic retarder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219530516U true CN219530516U (en) | 2023-08-15 |
Family
ID=87584759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321130746.5U Active CN219530516U (en) | 2023-05-12 | 2023-05-12 | Lubricating pump for hydrodynamic retarder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219530516U (en) |
-
2023
- 2023-05-12 CN CN202321130746.5U patent/CN219530516U/en active Active
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