CN110578685A - Transfer pump, gear box, vehicle and ship - Google Patents
Transfer pump, gear box, vehicle and ship Download PDFInfo
- Publication number
- CN110578685A CN110578685A CN201911002631.6A CN201911002631A CN110578685A CN 110578685 A CN110578685 A CN 110578685A CN 201911002631 A CN201911002631 A CN 201911002631A CN 110578685 A CN110578685 A CN 110578685A
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- China
- Prior art keywords
- pump
- outer rotor
- eccentric ring
- rotor
- inner rotor
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- 239000012530 fluid Substances 0.000 claims abstract description 42
- 239000003921 oil Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/082—Details specially related to intermeshing engagement type machines or pumps
- F04C2/084—Toothed wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
- F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The invention provides a delivery pump, a gear box, a vehicle and a ship, wherein the delivery pump comprises an inner rotor and an outer rotor, the inner rotor can be arranged in a positive rotation or reverse rotation manner, the inner rotor is positioned in a cavity of the outer rotor, a rotation center line of the outer rotor is eccentrically arranged relative to the rotation center line of the inner rotor, the rotation center line of the outer rotor is provided with a first position and a second position which are arranged at intervals, and a low-pressure cavity and a high-pressure cavity are arranged between the outer rotor and the inner rotor to respectively absorb fluid and discharge the fluid; the conveying pump has a first operation state and a second operation state, and under the condition that the conveying pump is in the first operation state or the second operation state, fluid flows in the conveying pump along the same preset path; under the condition that the inner rotor positively rotates, the delivery pump is switched to a first running state; the delivery pump is switched to a second operating state in the event of a reversal of the inner rotor. Therefore, no matter the inner rotor rotates forwards or reversely, fluid can be conveyed along the same preset path, and the application range of the conveying pump is widened.
Description
Technical Field
The invention relates to the technical field of delivery pumps, in particular to a delivery pump, a gear box, a vehicle and a ship.
Background
The delivery pump is used for delivering fluids such as oil, and in order to ensure continuous delivery of the fluids, the fluid driving structure in the delivery pump needs to rotate according to a preset rotation direction, so that the fluids can flow according to a preset path, the rotation direction of the driving structure cannot be changed, and otherwise, the problems that the fluids cannot be delivered or the fluids flow reversely can be caused.
For an independently driven delivery pump, the drive structure can maintain unidirectional rotation to meet fluid delivery requirements. In some occasions where the delivery pump is matched with other devices for use, the existing driving structure of other devices can be considered to drive the delivery pump to operate, so that the structure is simplified, and the cost is reduced. However, some devices may rotate forward or backward during operation, which may drive the driving structure in the conventional delivery pump to rotate forward or backward, thereby failing to achieve the fluid delivery requirement.
Therefore, the application range of the existing delivery pump is limited due to structural limitation, and the use requirements of the situations cannot be met.
disclosure of Invention
The invention provides a delivery pump, a gear box, a vehicle and a ship, which aim to improve the application range of the existing delivery pump.
In order to achieve the above object, according to one aspect of the present invention, there is provided a transfer pump comprising: the inner rotor can be arranged in a positive rotation or reverse rotation manner and is positioned in a cavity of the outer rotor, the rotating center line of the outer rotor is eccentrically arranged relative to the rotating center line of the inner rotor, the rotating center line of the outer rotor is provided with a first position and a second position which are arranged at intervals, and a low-pressure cavity and a high-pressure cavity are arranged between the outer rotor and the inner rotor so as to respectively absorb fluid and discharge the fluid; the conveying pump has a first operation state and a second operation state, and under the condition that the conveying pump is in the first operation state and the conveying pump is in the second operation state, fluid flows in the conveying pump along the same preset path; under the condition that the inner rotor positively rotates, the rotating center line of the outer rotor moves to a first position so as to switch the delivery pump to a first running state; in the case of reverse rotation of the inner rotor, the rotation center line of the outer rotor is moved to the second position to switch the delivery pump to the second operating state.
Further, the delivery pump further comprises: the eccentric ring is movably arranged, an accommodating cavity of the eccentric ring is eccentrically arranged relative to the rotating center line of the inner rotor, the outer rotor is arranged in the accommodating cavity, and the eccentric ring can drive the outer rotor to move so as to limit the rotating center line of the outer rotor to a first position or a second position.
further, the outer rotor can drive the eccentric ring to rotate within a preset angle range through friction force when rotating, wherein under the condition that the inner rotor rotates forwards, the outer rotor drives the eccentric ring to rotate to and keep at a first preset position, so that the rotating center line of the outer rotor is limited to the first position through the eccentric ring; under the condition that the inner rotor is reversely rotated, the outer rotor drives the eccentric ring to rotate to and keep at a second preset position, so that the rotation center line of the outer rotor is limited to the second position through the eccentric ring.
Furthermore, the eccentric ring is provided with an arc-shaped reversing groove, the delivery pump further comprises a limiting part which is fixedly arranged, one end of the limiting part is located in the reversing groove, and the limiting part is used for being matched with one end stop of the reversing groove to limit the eccentric ring at a first preset position or matched with the other end stop of the reversing groove to limit the eccentric ring at a second preset position.
Furthermore, the delivery pump also comprises a pump body, the pump body is provided with a suction inlet and a discharge outlet, the suction inlet is communicated with the low-pressure cavity, the discharge outlet is communicated with the high-pressure cavity, and the eccentric ring is rotatably arranged in the pump body.
Furthermore, a first gap is formed between the outer wall of the outer rotor and the inner wall of the eccentric ring, a second gap is formed between the outer wall of the eccentric ring and the inner wall of the pump body, and the size of the second gap is larger than that of the first gap.
The delivery pump further comprises a pressure plate and an intermediate plate, wherein the inner rotor, the outer rotor and the eccentric ring are all located between the pressure plate and the intermediate plate, the intermediate plate is provided with a first arc-shaped hole and a second arc-shaped hole, the first arc-shaped hole is communicated with the low-pressure cavity to absorb fluid, and the second arc-shaped hole is communicated with the high-pressure cavity to discharge the fluid.
Further, the conveying pump also comprises a pump shaft and a driving wheel, the inner rotor is arranged on the pump shaft, the driving wheel can be arranged in a forward rotation mode or a reverse rotation mode, and the driving wheel is in driving connection with the pump shaft to drive the pump shaft to rotate.
Further, the conveying pump further comprises a pump body, a second bearing and a third bearing, wherein the pump body comprises a first split body, a second split body and a third split body which are sequentially connected, the pump shaft sequentially penetrates into cavities of the first split body, the second split body and the third split body, the outer rotor is located in the cavity of the second split body, the second bearing is sleeved on the pump shaft and located in the cavity of the first split body, and the third bearing is sleeved on the pump shaft and located in the cavity of the third split body.
According to another aspect of the present invention, there is provided a gearbox comprising a housing and disposed therein a drive gear, a driven gear and a transfer pump, the transfer pump being as provided above, wherein the drive gear is in driving connection with the driven gear and the drive gear or the driven gear is in driving connection with the transfer pump.
According to another aspect of the present invention, there is provided a vehicle comprising a delivery pump, the delivery pump being the delivery pump provided above.
According to another aspect of the invention, there is provided a vessel comprising a transfer pump as provided above.
The technical scheme of the invention is applied, and the delivery pump comprises an inner rotor and an outer rotor, wherein the inner rotor can be arranged in a positive rotation or reverse rotation manner, the inner rotor is positioned in a cavity of the outer rotor, a rotation center line of the outer rotor is eccentrically arranged relative to the rotation center line of the inner rotor, the rotation center line of the outer rotor is provided with a first position and a second position which are arranged at intervals, and a low-pressure cavity and a high-pressure cavity are arranged between the outer rotor and the inner rotor to respectively absorb fluid and discharge the fluid; the conveying pump has a first operation state and a second operation state, and under the condition that the conveying pump is in the first operation state and the conveying pump is in the second operation state, fluid flows in the conveying pump along the same preset path; under the condition that the inner rotor positively rotates, the rotating center line of the outer rotor moves to a first position so as to switch the delivery pump to a first running state; in the case of reverse rotation of the inner rotor, the rotation center line of the outer rotor is moved to the second position to switch the delivery pump to the second operating state. Through the arrangement, no matter the inner rotor rotates forwards or reversely, the fluid can be conveyed along the same preset path through the matching of the inner rotor and the outer rotor, so that the application range of the conveying pump is improved. For example, the delivery pump is driven by other devices to operate, and the flowing direction of the fluid in the delivery pump is not influenced when the devices rotate forwards or backwards, so that the fluid delivery requirement can be met while the structure is simplified.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating the construction of a delivery pump provided by an embodiment of the present invention;
FIG. 2 shows a schematic view of the transfer pump of FIG. 1 in a first operating state;
FIG. 3 shows a schematic view of the transfer pump of FIG. 1 in a second operating state;
FIG. 4 shows a front view of the eccentric ring of FIG. 1;
FIG. 5 shows a perspective view of the eccentric ring of FIG. 4;
FIG. 6 shows a front view of the intermediate plate of FIG. 1;
FIG. 7 shows a cross-sectional view of the intermediate plate of FIG. 6;
Fig. 8 shows a partial enlarged view of a part of the structure in fig. 1.
Wherein the figures include the following reference numerals:
21. a first split body; 22. a pump shaft; 23. a second bearing; 24. a spacer ring; 25. pressing a plate; 26. a circlip; 27. a second body; 28. an eccentric ring; 29. an outer rotor; 30. an inner rotor; 31. a limiting member; 32. a third bearing; 33. a middle plate; 34. a cover plate; 35. a third split; 2-1, a first arc-shaped hole; 2-2, a second arc-shaped hole; 3-1, a suction inlet; 3-2, a discharge port; 4-1, a reversing groove.
Detailed Description
the technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in the drawings, embodiments of the present invention provide a transfer pump comprising: the fluid-absorbing and discharging device comprises an inner rotor 30 and an outer rotor 29, wherein the inner rotor 30 can be arranged in a forward rotation or reverse rotation manner, the inner rotor 30 is positioned in a cavity of the outer rotor 29, a rotation center line of the outer rotor 29 is eccentrically arranged relative to a rotation center line of the inner rotor 30, the rotation center line of the outer rotor 29 is provided with a first position and a second position which are arranged at intervals, and a low-pressure cavity and a high-pressure cavity are arranged between the outer rotor 29 and the inner rotor 30 to respectively absorb fluid and discharge the; the conveying pump has a first operation state and a second operation state, and under the condition that the conveying pump is in the first operation state and the conveying pump is in the second operation state, fluid flows in the conveying pump along the same preset path; wherein, in the case of normal rotation of the inner rotor 30, the rotation center line of the outer rotor 29 is moved to the first position to switch the feed pump to the first operating state; with the inner rotor 30 reversed, the center line of rotation of the outer rotor 29 is moved to the second position to switch the feed pump to the second operating state.
The technical scheme of the invention is applied, and a delivery pump is provided, which comprises an inner rotor 30 and an outer rotor 29, wherein the inner rotor 30 can be arranged in a positive rotation or negative rotation manner, the inner rotor 30 is positioned in a cavity of the outer rotor 29, the rotation center line of the outer rotor 29 is eccentrically arranged relative to the rotation center line of the inner rotor 30, the rotation center line of the outer rotor 29 is provided with a first position and a second position which are arranged at intervals, and a low-pressure cavity and a high-pressure cavity are arranged between the outer rotor 29 and the inner rotor 30 to respectively absorb fluid and discharge the fluid; the conveying pump has a first operation state and a second operation state, and under the condition that the conveying pump is in the first operation state and the conveying pump is in the second operation state, fluid flows in the conveying pump along the same preset path; wherein, in the case of normal rotation of the inner rotor 30, the rotation center line of the outer rotor 29 is moved to the first position to switch the feed pump to the first operating state; with the inner rotor 30 reversed, the center line of rotation of the outer rotor 29 is moved to the second position to switch the feed pump to the second operating state. Through the arrangement, no matter the inner rotor 30 rotates forwards or reversely, the fluid can be conveyed along the same preset path through the matching of the inner rotor 30 and the outer rotor 29, so that the application range of the conveying pump is improved. For example, the delivery pump is driven by other devices to operate, and the flowing direction of the fluid in the delivery pump is not influenced when the devices rotate forwards or backwards, so that the fluid delivery requirement can be met while the structure is simplified.
As shown in fig. 2, in the case of the forward rotation of the inner rotor 30, the delivery pump is in the first operating state, in which case the inner rotor 30 rotates clockwise and the outer rotor 29 rotates accordingly, so that the flow of the lubricating oil along the preset path is realized. In fig. 2, the rotation center line of the outer rotor 29 is located at a first position (to the left of the rotation center line of the inner rotor 30).
As shown in fig. 3, in the case where the inner rotor 30 is reversely rotated, the transfer pump is in the second operation state, in which case the inner rotor 30 is rotated counterclockwise and the outer rotor 29 is rotated accordingly, so that the flow of the lubricating oil along the preset path is realized. In fig. 3, the rotation center line of the outer rotor 29 is located at the second position (on the right side of the rotation center line of the inner rotor 30).
In this embodiment, the transfer pump further includes: and an eccentric ring 28 movably disposed, a receiving cavity of the eccentric ring 28 being eccentrically disposed with respect to a rotation center line of the inner rotor 30, and the outer rotor 29 being disposed in the receiving cavity, the eccentric ring 28 moving the outer rotor 29 to define the rotation center line of the outer rotor 29 to a first position or a second position. In this way, the position of the outer rotor 29 can be switched by the movement of the eccentric ring 28, so that the operating state of the delivery pump is switched.
further, the outer rotor 29 may rotate the eccentric ring 28 within a predetermined angle range by a friction force when rotating, wherein in case that the inner rotor 30 rotates forward, the outer rotor 29 rotates the eccentric ring 28 to and maintains the first predetermined position, so as to limit the rotation center line of the outer rotor 29 to the first position by the eccentric ring 28; in the case where the inner rotor 30 is reversely rotated, the outer rotor 29 rotates and holds the eccentric ring 28 at the second predetermined position to define the rotation center line of the outer rotor 29 to the second position by the eccentric ring 28. Since the eccentric ring 28 has a receiving cavity, and the outer rotor 29 is disposed in the receiving cavity, the axial length of the delivery pump can be reduced, so that the structure of the delivery pump is more compact, and the occupied space is reduced. Moreover, a proper gap is arranged between the outer wall of the outer rotor 29 and the inner wall of the eccentric ring 28, so that the outer rotor 29 can drive the eccentric ring 28 to rotate within a preset angle range through friction force when rotating, the automatic rotation of the eccentric ring 28 is realized, the running state of the delivery pump can be automatically switched, and the structure is simple and convenient to operate.
Through the arrangement, when the rotation direction of the driving gear 19 changes, the rotation direction of the outer rotor 29 also changes correspondingly, the outer rotor 29 drives the eccentric ring 28 to rotate and keep at the first preset position or the second preset position through friction force when rotating, so that the position of the eccentrically arranged accommodating cavity of the eccentric ring 28 changes, and as the outer rotor 29 is arranged in the accommodating cavity, the position of the outer rotor 29 changes along with the accommodating cavity of the eccentric ring 28, the position of the rotation center line of the outer rotor 29 is changed, and further the automatic switching of the operation state of the delivery pump is realized. In this embodiment, the eccentric ring 28 may be rotated 180 degrees. As shown in fig. 2, the eccentric ring 28 is located at a first predetermined position (the receiving cavity of the eccentric ring 28 is offset to the left with respect to the rotation center line of the inner rotor 30). As shown in fig. 3, the eccentric ring 28 is located at a second predetermined position (the receiving cavity of the eccentric ring 28 is offset to the right with respect to the rotation center line of the inner rotor 30).
furthermore, the eccentric ring 28 is provided with an arc-shaped reversing slot 4-1, the delivery pump further comprises a fixedly arranged limiting member 31, one end of the limiting member 31 is located in the reversing slot 4-1, and the limiting member 31 is used for being matched with a stop at one end of the reversing slot 4-1 to limit the eccentric ring 28 at a first preset position or matched with a stop at the other end of the reversing slot 4-1 to limit the eccentric ring 28 at a second preset position. Therefore, the rotation position of the eccentric ring 28 can be limited through the matching of the reversing slot 4-1 and the limiting piece 31, so that the eccentric ring 28 is limited to the first preset position or the second preset position.
In this embodiment, the transfer pump further comprises a pump body having a suction port 3-1 and a discharge port 3-2, the suction port 3-1 communicating with the low pressure chamber, the discharge port 3-2 communicating with the high pressure chamber, and an eccentric ring 28 rotatably disposed in the pump body. This serves to confine the eccentric ring 28 by the pump body and facilitates the formation of the fluid transfer channel.
In the present embodiment, a first gap is formed between the outer wall of the outer rotor 29 and the inner wall of the eccentric ring 28, and a second gap is formed between the outer wall of the eccentric ring 28 and the inner wall of the pump body, and the size of the second gap is larger than that of the first gap. The outer rotor 29 is rotatable with respect to the eccentric ring 28 due to a first clearance between the outer wall of the outer rotor 29 and the inner wall of the eccentric ring 28, and the eccentric ring 28 is rotatable with respect to the pump body due to a second clearance between the outer wall of the eccentric ring 28 and the inner wall of the pump body. And because the size of the second clearance is larger than that of the first clearance, the friction force between the outer wall of the outer rotor 29 and the inner wall of the eccentric ring 28 during rotation is larger than that between the outer wall of the eccentric ring 28 and the inner wall of the pump body, so that the outer rotor 29 can drive the eccentric ring 28 to rotate through the friction force during rotation. The automatic switching device is simple and ingenious in structure, and automatic switching of the running state of the delivery pump is achieved.
In this embodiment, the transfer pump further includes a pressure plate 25 and an intermediate plate 33, and the inner rotor 30, the outer rotor 29 and the eccentric ring 28 are located between the pressure plate 25 and the intermediate plate 33, wherein the intermediate plate 33 has a first arc-shaped hole 2-1 and a second arc-shaped hole 2-2, the first arc-shaped hole 2-1 is communicated with the low pressure chamber to absorb the fluid, and the second arc-shaped hole 2-2 is communicated with the high pressure chamber to discharge the fluid. Through the arrangement, the arrangement of the oil way is convenient, so that the lubricating oil moves according to the preset path. Moreover, because the first arc-shaped hole 2-1 and the second arc-shaped hole 2-2 are both arc-shaped structures and the sizes of the holes are larger, even if the eccentric position of the outer rotor 29 is changed, the first arc-shaped hole 2-1 can still be ensured to be communicated with the low pressure cavity, and the second arc-shaped hole 2-2 is communicated with the high pressure cavity.
Optionally, the limiting member 31 is a column structure, and the limiting member 31 is disposed on the middle plate 33. The limiting piece 31 is arranged on the middle plate 33, so that the conveying pump is compact in structure and small in size, and the occupied space of the conveying pump is reduced.
in this embodiment, the transfer pump further includes a pump shaft 22 and a drive wheel, the inner rotor 30 is disposed on the pump shaft 22, the drive wheel is disposed in a forward or reverse direction, and the drive wheel is drivingly coupled to the pump shaft 22 to drive the pump shaft 22 to rotate. This drives the pump shaft 22 to rotate via the drive wheel, which in turn drives the inner rotor 30 to rotate via the pump shaft 22.
When the rotation direction of the driving wheel is changed, the rotation direction of the pump shaft 22 is changed, the meshing rotation direction of the inner rotor 30 and the outer rotor 29 is changed, and the eccentric ring 28 rotates 180 degrees under the action of friction force because the eccentric ring 28 and the outer rotor 29 are in small clearance fit, until the other side end face of the reversing groove 4-1 contacts with the limiting piece 31 to stop. At this time, the rotation center line of the outer rotor 29 also rotates to the other side of the inner rotor 30. Because the offset positions of the inner rotor and the outer rotor and the rotation direction of the gear are changed simultaneously, the area of the first arc-shaped hole 2-1 still forms a low-pressure cavity, the area of the second arc-shaped hole 2-2 still forms a high-pressure cavity, and the flow direction of lubricating oil is kept unchanged.
In this embodiment, the transfer pump further includes a pump body, a second bearing 23 and a third bearing 32, wherein the pump body includes a first split body 21, a second split body 27 and a third split body 35 which are connected in sequence, the pump shaft 22 penetrates through the cavities of the first split body 21, the second split body 27 and the third split body 35 in sequence, the outer rotor 29 is located in the cavity of the second split body 27, the second bearing 23 is sleeved on the pump shaft 22 and located in the cavity of the first split body 21, and the third bearing 32 is sleeved on the pump shaft 22 and located in the cavity of the third split body 35. In the present embodiment, the pump body can be understood as a housing structure of the delivery pump.
Optionally, the third bearing 32 is a sliding bearing, a part of the sliding bearing is inserted into the middle plate 33, two second bearings 23 are provided, the two second bearings 23 are separated by the spacer ring 24, the oil suction port 3-1 is located on the third split 35, the oil outlet 3-2 is located on the second split 27, the pressure plate 25 is connected with the first split 21, one side of the second bearing 23 is limited by the elastic retainer ring 26 arranged on the pump shaft 22, and the arrangement can facilitate the arrangement of the structural components.
Optionally, the pump shaft 22 includes a first shaft section, a second shaft section, a third shaft section, a fourth shaft section, a fifth shaft section and a sixth shaft section, which are connected in sequence, wherein the first shaft section penetrates into the pump gear 4, the second shaft section is in limit fit with the end face of the pump gear 4, the third shaft section is in limit fit with the second bearing 23, the fourth shaft section is used for mounting the second bearing 23, the fifth shaft section is used for mounting the inner rotor 30, and the sixth shaft section is used for mounting the third bearing 32. Through the arrangement, the matching and the positioning of different structural parts can be realized. In this embodiment, the diameter of the first bearing is smaller than the diameter of the second shaft section, and the diameters of the second shaft section, the third shaft section, the fourth shaft section, the fifth shaft section and the sixth shaft section decrease in sequence. Optionally, the delivery pump further comprises a cover plate 34, and the cover plate 34 is connected with the third body 35 to seal off the cavity of the third body 35.
another embodiment of the invention provides a gear box, which comprises a box body, and a driving gear, a driven gear and a delivery pump which are arranged in the box body, wherein the delivery pump is the delivery pump provided above, the driving gear is in driving connection with the driven gear, and the driving gear or the driven gear is in driving connection with the delivery pump. Through the arrangement, the delivery pump is arranged in the box body, and the driven gear of the gear box can directly drive the delivery pump to rotate so as to realize the operation of the delivery pump, so that an additional oil pump driving device and a control device are not needed. Therefore, the technical scheme can simplify the structure of the existing gear box needing forced lubrication, reduce the whole size of the gear box and the weight of the gear box, thereby being beneficial to realizing light weight. Moreover, under the condition that the delivery pump in the gear box is in the first running state and the condition that the delivery pump is in the second running state, the fluid flows along the same preset path in the delivery pump, so that the flowing direction of the fluid cannot be changed no matter the driving gear rotates forwards or backwards during running of the gear box, and unidirectional delivery of the fluid is guaranteed.
Another embodiment of the invention provides a vehicle comprising a transfer pump, the transfer pump being the transfer pump provided above.
Another embodiment of the invention provides a ship comprising a transfer pump, the transfer pump being the transfer pump provided above.
of course, the delivery pump can be applied to other equipment according to the needs.
the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A delivery pump, comprising:
An inner rotor (30), an outer rotor (29), wherein the inner rotor (30) can be arranged in a forward rotation or reverse rotation manner, the inner rotor (30) is positioned in a cavity of the outer rotor (29), a rotation center line of the outer rotor (29) is eccentrically arranged relative to the rotation center line of the inner rotor (30), the rotation center line of the outer rotor (29) is provided with a first position and a second position which are arranged at intervals, and a low-pressure cavity and a high-pressure cavity are arranged between the outer rotor (29) and the inner rotor (30) to respectively absorb fluid and discharge fluid;
The conveying pump has a first operation state and a second operation state, and under the condition that the conveying pump is in the first operation state and the conveying pump is in the second operation state, the fluid flows along the same preset path in the conveying pump;
Wherein, in case of a positive rotation of the inner rotor (30), the centre line of rotation of the outer rotor (29) is moved to the first position to switch the delivery pump to the first operating state; in the event of a reversal of the inner rotor (30), the centre line of rotation of the outer rotor (29) is moved into the second position in order to switch the delivery pump into the second operating state.
2. the transfer pump of claim 1, further comprising:
An eccentric ring (28) movably disposed, a receiving cavity of the eccentric ring (28) is eccentrically disposed with respect to a rotation center line of the inner rotor (30), the outer rotor (29) is disposed in the receiving cavity, and the eccentric ring (28) can move the outer rotor (29) to define the rotation center line of the outer rotor (29) to the first position or the second position.
3. Delivery pump according to claim 2, characterized in that the outer rotor (29) can, when rotating, rotate the eccentric ring (28) through a predetermined angular range by means of friction, wherein,
Under the condition of forward rotation of the inner rotor (30), the outer rotor (29) drives the eccentric ring (28) to rotate to and keep at a first preset position, so that the rotation center line of the outer rotor (29) is limited to the first position through the eccentric ring (28);
Under the condition that the inner rotor (30) is reversely rotated, the outer rotor (29) drives the eccentric ring (28) to rotate to and keep at a second preset position, so that the rotation center line of the outer rotor (29) is limited to the second position through the eccentric ring (28).
4. The delivery pump according to claim 3, wherein the eccentric ring (28) has an arc-shaped reversing slot (4-1), and the delivery pump further comprises a fixedly arranged limiting member (31), one end of the limiting member (31) is located in the reversing slot (4-1), and the limiting member (31) is used for being matched with one end stop of the reversing slot (4-1) to limit the eccentric ring (28) at the first preset position or matched with the other end stop of the reversing slot (4-1) to limit the eccentric ring (28) at the second preset position.
5. The delivery pump according to claim 2, further comprising a pump body having a suction inlet (3-1) and a discharge outlet (3-2), the suction inlet (3-1) communicating with the low pressure chamber and the discharge outlet (3-2) communicating with the high pressure chamber, the eccentric ring (28) being rotatably disposed within the pump body.
6. delivery pump according to claim 5, characterized in that there is a first clearance between the outer wall of the outer rotor (29) and the inner wall of the eccentric ring (28), and a second clearance between the outer wall of the eccentric ring (28) and the inner wall of the pump body, the size of the second clearance being greater than the size of the first clearance.
7. The delivery pump according to claim 2, further comprising a pressure plate (25) and an intermediate plate (33), the inner rotor (30), the outer rotor (29) and the eccentric ring (28) being located between the pressure plate (25) and the intermediate plate (33), wherein the intermediate plate (33) has a first arc-shaped hole (2-1) and a second arc-shaped hole (2-2), the first arc-shaped hole (2-1) communicating with the low pressure chamber to absorb fluid, the second arc-shaped hole (2-2) communicating with the high pressure chamber to discharge fluid.
8. The delivery pump according to claim 1, further comprising a pump shaft (22) and a drive wheel, the inner rotor (30) being disposed on the pump shaft (22), the drive wheel being disposed in a forward or reverse direction, the drive wheel being drivingly connected to the pump shaft (22) for driving the pump shaft (22) in rotation.
9. The delivery pump according to claim 8, further comprising a pump body, a second bearing (23) and a third bearing (32), wherein the pump body comprises a first split body (21), a second split body (27) and a third split body (35) which are connected in sequence, the pump shaft (22) penetrates into the cavities of the first split body (21), the second split body (27) and the third split body (35) in sequence, the outer rotor (29) is located in the cavity of the second split body (27), the second bearing (23) is sleeved on the pump shaft (22) and located in the cavity of the first split body (21), and the third bearing (32) is sleeved on the pump shaft (22) and located in the cavity of the third split body (35).
10. A gearbox comprising a housing and a drive gear, a driven gear and a transfer pump disposed within the housing, the transfer pump being as claimed in any one of claims 1 to 9, wherein the drive gear is in driving connection with the driven gear and the drive gear or the driven gear is in driving connection with the transfer pump.
11. A vehicle, characterized in that the vehicle comprises a delivery pump, which is a delivery pump according to any one of claims 1 to 9.
12. A ship, characterized in that it comprises a transfer pump according to any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911002631.6A CN110578685A (en) | 2019-10-21 | 2019-10-21 | Transfer pump, gear box, vehicle and ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911002631.6A CN110578685A (en) | 2019-10-21 | 2019-10-21 | Transfer pump, gear box, vehicle and ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110578685A true CN110578685A (en) | 2019-12-17 |
Family
ID=68815233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911002631.6A Pending CN110578685A (en) | 2019-10-21 | 2019-10-21 | Transfer pump, gear box, vehicle and ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110578685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116241458A (en) * | 2021-12-07 | 2023-06-09 | 安徽威灵汽车部件有限公司 | Pump assembly and vehicle |
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| CN116241458A (en) * | 2021-12-07 | 2023-06-09 | 安徽威灵汽车部件有限公司 | Pump assembly and vehicle |
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