CN209892441U - Bidirectional gear oil pump - Google Patents
Bidirectional gear oil pump Download PDFInfo
- Publication number
- CN209892441U CN209892441U CN201920370734.7U CN201920370734U CN209892441U CN 209892441 U CN209892441 U CN 209892441U CN 201920370734 U CN201920370734 U CN 201920370734U CN 209892441 U CN209892441 U CN 209892441U
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- Prior art keywords
- oil pump
- gear
- driving shaft
- oil
- working cavity
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- 239000012208 gear oil Substances 0.000 title claims abstract description 11
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 8
- 239000003921 oil Substances 0.000 claims abstract description 119
- 230000005540 biological transmission Effects 0.000 claims abstract description 9
- 238000005086 pumping Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
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- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Abstract
A bidirectional gear oil pump relates to the technical field of power equipment and solves the technical problem that a driving shaft of an existing oil pump can only pump oil in a one-way mode. The inner cavity of an oil pump shell of the oil pump is divided into a front working cavity and a rear working cavity, the oil pump shell is provided with two driving shafts which are parallel to each other, each driving shaft is provided with an oil pump gear and a middle gear, the oil pump gear is arranged in the front working cavity, and the middle gear is arranged in the rear working cavity; the working directions of the two oil pump gears are opposite, the driving shaft and the first oil pump gear are locked in a one-way mode in the clockwise direction, one of the second oil pump gear and the two intermediate gears is locked in a one-way mode in the anticlockwise direction with the driving shaft, and the other two oil pump gears are locked in the anticlockwise direction with the driving shaft; the two intermediate gears are connected with each other through the transmission part, so that the driving shaft and the driven shaft can synchronously rotate in the anticlockwise direction. The utility model provides an oil pump is applicable to driving motor such as electric automobile and needs two-way pivoted occasion.
Description
Technical Field
The utility model relates to a power equipment technique especially relates to a technique of bidirectional gear oil pump.
Background
The traditional oil pump mainly comprises a pump shell, a pump driving shaft and an oil pump gear, wherein an oil outlet and an oil inlet of the oil pump are fixed, and the rotation direction of pump oil of the oil pump gear is also fixed. When the oil pumping device works, the motor drives the pump driving shaft to rotate, so that oil pumping is realized.
However, in some application occasions, the steering of the output shaft of the motor may change, for example, when the electric vehicle moves forward, the main motor rotates in the forward direction, and when the electric vehicle moves backward, the main motor rotates in the reverse direction, in this case, two oil pumps are usually required to be arranged to ensure the oil pressure, the main motor rotates in the forward direction to drive one of the oil pumps to pump oil, the main motor rotates in the reverse direction to drive the other oil pump to pump oil, the oil path structure is relatively complex, the cost of the hydraulic system is increased, the overall weight of the hydraulic system is also increased, and meanwhile, the occupied space of the hydraulic system is also increased.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the above-mentioned prior art, the utility model aims to solve the technical problem that a can need two-way pivoted occasion to reduce hydraulic system cost, weight and occupation space's two-way gear oil pump at driving motor is provided.
In order to solve the technical problem, the utility model provides a two-way gear oil pump, including the oil pump shell, its characterized in that: the inner cavity of the oil pump shell is divided into a front working cavity and a rear working cavity, wherein the front working cavity is provided with an oil inlet and an oil outlet;
the oil pump shell is provided with two parallel driving shafts, wherein one driving shaft is a driving shaft, and the other driving shaft is a driven shaft;
the first oil pump gear is arranged in a front working cavity of the oil pump shell, and the first intermediate gear is arranged in a rear working cavity of the oil pump shell;
the driven shaft is provided with a second oil pump gear and a second intermediate gear, wherein the second oil pump gear is arranged in a front working cavity of the oil pump shell, and the second intermediate gear is arranged in a rear working cavity of the oil pump shell;
the working direction of the first oil pump gear is clockwise, the working direction of the second oil pump gear is anticlockwise, the first oil pump gear and the second oil pump gear are meshed with each other, and the driving shaft and the first oil pump gear are locked in a one-way mode in the clockwise direction;
one gear of the second oil pump gear, the first intermediate gear and the second intermediate gear is locked with the driving shaft in a one-way mode in the anticlockwise direction, and the other two gears are locked with the driving shaft in the anticlockwise direction;
the first intermediate gear and the second intermediate gear are connected with each other through the transmission part, so that the driving shaft and the driven shaft can synchronously rotate in the anticlockwise direction.
The utility model provides a two-way gear oil pump, through one-way clutch and intermediate gear's cooperation, can switch the oil pump gear of pump oil when the rotation direction of driving shaft changes for still can continue the pump oil after the rotation direction of driving shaft changes, only need single oil pump just can guarantee hydraulic system's oil pressure power, the oil circuit structure is also simple relatively, can need two-way pivoted occasion at driving motor to reduce hydraulic system cost, weight and occupation space.
Drawings
Fig. 1 is a right sectional view of a bidirectional gear oil pump according to a first embodiment of the present invention;
fig. 2 is a right sectional view of a bidirectional gear oil pump according to a second embodiment of the present invention.
Detailed Description
The following description is provided for further details of the embodiments of the present invention with reference to the accompanying drawings, but this embodiment is not intended to limit the present invention, and all similar structures and similar variations thereof adopted by the present invention should be included in the protection scope of the present invention.
As shown in fig. 1, a bidirectional gear oil pump provided by a first embodiment of the present invention includes an oil pump housing 1, and is characterized in that:
the inner cavity of the oil pump shell 1 is divided into a front working cavity and a rear working cavity, wherein the front working cavity is provided with an oil inlet and an oil outlet;
the oil pump shell 1 is provided with two parallel driving shafts, wherein one driving shaft is a driving shaft 21, and the other driving shaft is a driven shaft 22;
the driving shaft 21 is provided with a first oil pump gear 31 and a first intermediate gear 41, wherein the first oil pump gear 31 is arranged in a front working cavity of an oil pump shell, the first intermediate gear 41 is arranged in a rear working cavity of the oil pump shell, the driving shaft 21 and the first oil pump gear 31 are locked in a one-way mode in a clockwise direction through a one-way clutch 51, the working direction (the rotating direction during oil pumping) of the first oil pump gear 31 is in a clockwise direction, and the driving shaft 21 and the first intermediate gear 41 are locked in a one-way mode in an anticlockwise direction through a one-way clutch 52;
a second oil pump gear 32 and a second intermediate gear 42 are coaxially fixed on the driven shaft 22, wherein the second oil pump gear 32 is arranged in a front working cavity of the oil pump housing, the second intermediate gear 42 is arranged in a rear working cavity of the oil pump housing, and the working direction (the rotating direction during oil pumping) of the second oil pump gear 32 is counterclockwise;
the first oil pump gear 31 and the second oil pump gear 32 are meshed with each other, and the first intermediate gear 41 and the second intermediate gear 42 are connected with each other through the transmission member 6, so that the driving shaft 21 and the driven shaft 22 can synchronously rotate in the counterclockwise direction.
The utility model discloses a first embodiment is particularly suitable for installing and uses on the car, inserts the hydraulic pressure pipeline on the car with fluid entry, the fluid export of working chamber before the oil pump casing during the use, couples driving shaft 21 to the driving motor on the car (for example electric automobile's main motor), drives driving shaft clockwise rotation or anticlockwise rotation by the driving motor on the car to order about oil pump work, its theory of operation as follows:
the driving shaft and the first oil pump gear are unidirectionally locked in a clockwise direction (through the one-way clutch), and the driving shaft and the first intermediate gear are unidirectionally locked in a counterclockwise direction (through the one-way clutch);
thus:
when the driving shaft 21 rotates clockwise, the first oil pump gear 31 will rotate synchronously with the driving shaft, and the first intermediate gear 41 will not rotate; at this time, the driven shaft 22 and the second oil pump gear 32 cannot follow up rotation, at this time, the first oil pump gear 31 pumps oil, and because the first oil pump gear 31 and the second oil pump gear 32 are meshed with each other, clockwise rotation of the first oil pump gear 31 can drive the second oil pump gear 32 to rotate anticlockwise;
when the driving shaft 21 rotates counterclockwise, the first intermediate gear 41 will rotate synchronously with the driving shaft, and the first oil pump gear 31 will not follow the rotation; at this time, the first intermediate gear 41 drives the second intermediate gear 42 to rotate counterclockwise synchronously, so that the driven shaft 22 is driven to rotate counterclockwise, and further the second oil pump gear 32 is driven to rotate counterclockwise, at this time, the second oil pump gear 32 pumps oil, and because the first oil pump gear 31 and the second oil pump gear 32 are meshed with each other, the counterclockwise rotation of the second oil pump gear 32 drives the first oil pump gear 31 to rotate clockwise.
In the first embodiment of the present invention, the transmission component 6 connecting the first intermediate gear 41 and the second intermediate gear 42 adopts a transmission chain belt, and in other embodiments of the present invention, the transmission component connecting the first intermediate gear 41 and the second intermediate gear 42 can also adopt a transmission gear.
The utility model discloses in the first embodiment, first oil pump gear, first intermediate gear are installed on the driving shaft through one way clutch respectively, and first oil pump gear wherein and driving shaft are one-way locking in the clockwise, and first intermediate gear and driving shaft are one-way locking in the counter-clockwise, and on the driven shaft, second oil pump gear, second intermediate gear all with driven shaft fixed connection.
As shown in fig. 2, the second embodiment of the present invention is different from the first embodiment in that: the same function as in the first embodiment can be achieved also by locking the drive shaft 221 and the first oil pump gear 231 in one direction in the clockwise direction by the one-way clutch 251, fixedly connecting the drive shaft 221 and the first intermediate gear 241, fixedly connecting the driven shaft 222 and the second intermediate gear 242, fixedly connecting the driven shaft 222 and the second oil pump gear 232 in one direction in the counterclockwise direction by the one-way clutch 252, and connecting the first intermediate gear 241 and the second intermediate gear 242 to each other by the power transmission member 206 on the drive shaft 221.
The utility model discloses in other embodiments, under the circumstances of driving shaft and first oil pump gear (through one way clutch) one-way locking on clockwise, as long as second oil pump gear, first intermediate gear, second intermediate gear all lock with the drive shaft at place on anticlockwise to there is at least one gear in this three gear and the drive shaft at place to be (through one way clutch) one-way locking on anticlockwise, can both realize with the same function of first embodiment.
For example, the same function as that of the first embodiment can be achieved by locking the drive shaft and the first oil pump gear in a one-way manner in the clockwise direction through the one-way clutch on the drive shaft and fixedly connecting the drive shaft and the first intermediate gear, and by fixedly connecting the driven shaft and the second oil pump gear and locking the driven shaft and the second intermediate gear in a one-way manner in the counterclockwise direction through the one-way clutch on the driven shaft.
For another example, in the scheme of the second embodiment, the intermediate gear and the driving shaft may be further unidirectionally locked in the counterclockwise direction through the one-way clutch (i.e., the second oil pump gear and the first intermediate gear are both unidirectionally locked in the counterclockwise direction with the driving shaft), so that when the driving shaft rotates clockwise, the first intermediate gear does not follow up rotation, the driven shaft does not follow up rotation, and only when the driving shaft rotates counterclockwise, the first intermediate gear can follow up rotation, which can also achieve the same function as the first embodiment, reduce the rotation time of the driven shaft, and prolong the service life of the driven shaft; similarly, the second intermediate gear and the driven shaft in the second embodiment may also be unidirectionally locked in the counterclockwise direction by the one-way clutch.
In the embodiments of the present invention, the one-way clutch can be replaced by other devices that can realize one-way locking, such as a ratchet mechanism.
Claims (1)
1. A bidirectional gear oil pump comprises an oil pump shell, and is characterized in that: the inner cavity of the oil pump shell is divided into a front working cavity and a rear working cavity, wherein the front working cavity is provided with an oil inlet and an oil outlet;
the oil pump shell is provided with two parallel driving shafts, wherein one driving shaft is a driving shaft, and the other driving shaft is a driven shaft;
the first oil pump gear is arranged in a front working cavity of the oil pump shell, and the first intermediate gear is arranged in a rear working cavity of the oil pump shell;
the driven shaft is provided with a second oil pump gear and a second intermediate gear, wherein the second oil pump gear is arranged in a front working cavity of the oil pump shell, and the second intermediate gear is arranged in a rear working cavity of the oil pump shell;
the working direction of the first oil pump gear is clockwise, the working direction of the second oil pump gear is anticlockwise, the first oil pump gear and the second oil pump gear are meshed with each other, and the driving shaft and the first oil pump gear are locked in a one-way mode in the clockwise direction;
one gear of the second oil pump gear, the first intermediate gear and the second intermediate gear is locked with the driving shaft in a one-way mode in the anticlockwise direction, and the other two gears are locked with the driving shaft in the anticlockwise direction;
the first intermediate gear and the second intermediate gear are connected with each other through the transmission part, so that the driving shaft and the driven shaft can synchronously rotate in the anticlockwise direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370734.7U CN209892441U (en) | 2019-03-22 | 2019-03-22 | Bidirectional gear oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920370734.7U CN209892441U (en) | 2019-03-22 | 2019-03-22 | Bidirectional gear oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209892441U true CN209892441U (en) | 2020-01-03 |
Family
ID=68997743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920370734.7U Active CN209892441U (en) | 2019-03-22 | 2019-03-22 | Bidirectional gear oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209892441U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915360A (en) * | 2019-03-22 | 2019-06-21 | 陈扬珑 | Two-way gear oil pump |
-
2019
- 2019-03-22 CN CN201920370734.7U patent/CN209892441U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109915360A (en) * | 2019-03-22 | 2019-06-21 | 陈扬珑 | Two-way gear oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220216 Address after: Room 1808 and 1809, No. 1, Lane 1588, Wangyuan South Road, Fengxian District, Shanghai 201400 Patentee after: Shanghai Meihua Automobile Technology Co.,Ltd. Address before: Room 16g, No. 1568, Dalian Road, Shanghai 200093 Patentee before: Chen Yanglong Patentee before: Zhou Shijian Patentee before: Yin Yusheng |
|
| TR01 | Transfer of patent right |