CN203516099U - Flow distribution device for internal-curve planet gear pump - Google Patents
Flow distribution device for internal-curve planet gear pump Download PDFInfo
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- CN203516099U CN203516099U CN201320597639.3U CN201320597639U CN203516099U CN 203516099 U CN203516099 U CN 203516099U CN 201320597639 U CN201320597639 U CN 201320597639U CN 203516099 U CN203516099 U CN 203516099U
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- end cap
- flow distribution
- thrust plate
- semicircle
- right end
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Abstract
The utility model discloses a flow distribution device for an internal-curve planet gear pump. The device consists of a left end cover, a left flow distribution plate, a right end cover and a right flow distribution plate. According to the device, the end covers are combined with the flow distribution plates for use, an annular groove with a semicircular section is formed in the surface, contacted with the flow distribution plates, of each of the left and right end covers, the left and right flow distribution plates are embedded into the left and right end covers respectively to form an annular passage after the two annular grooves are butted, flow distribution windows are formed in specific positions of the flow distribution plates, and oil can flow in and out of the flow distribution plates through the flow distribution windows to realize the oil feeding and discharging of the pump.
Description
Technical field
The utility model relates to a kind of inner curve planetary gear pump flow distribution apparatus, belongs to hydraulic transmission field.
Background technique
Inner curve gear planetary gear pump is a kind of capacity hydraulic pressure installation with non-circular gear drive, its working principle as shown in Figure 1, mainly central gear (15), planet wheel (14) and inner curve gear ring (10), consist of, the closed containing cavity volume-variation that it utilizes central gear, planet wheel and inner curve gear ring to form is carried out oil suction and oil extraction.More than one of the closed containing cavity forming due to central gear, planet wheel, inner curve gear ring, therefore, its flow distribution apparatus must meet makes each cavity volume of pump after reaching volume minimum, can start oil suction respectively, and after volume maximum, oil suction finishes, and starts oil extraction.In order to simplify flow distribution apparatus, designed a kind of special-purpose inner curve planetary gear pump flow distribution apparatus, by end cap and thrust plate, be used in combination, on the face contacting at left and right end cap and thrust plate, respectively drive the circular groove that a cross section is semicircle, after the docking of two semicircular circular groove, form an annular pass, special position on thrust plate is opened flow window can, by flow window into and out of thrust plate, realize oil-feed and the oil extraction of pump by fluid.
Summary of the invention
In order to realize inner curve planetary gear pump oil suction and oil extraction, the utility model proposes a kind of flow distribution apparatus that is specifically designed to inner curve planetary gear pump, can meet the flow requirement of each cavity volume.
The technological scheme that the utility model solution Assignment Problem adopts is: inner curve planetary gear pump flow distribution apparatus mainly comprises left end cap, left thrust plate, right end cap, right thrust plate, left thrust plate is embedded in left end cap, right thrust plate is embedded in right end cap, utilizes bolt that left end cap, inner curve gear ring and right end cap are linked up.(1) oil-feed process: left thrust plate is embedded in left end cap, left end cap and left thrust plate combination, on the face contacting with left thrust plate at left end cap, respectively drive the circular groove that a cross section is semicircle, left end cap and left thrust plate are combined, and two semicircle circular grooves are combined to form an annular pass; On left end cap, open a radial hole and annular pass and connect, by this radial hole, be connected with oil inlet pipe; Special position at the semicircle circular groove of left thrust plate is offered several flow windows, leads to each oil sucting cavity of pump; The fluid that oil inlet pipe provides enters annular pass, each oil sucting cavity fuel feeding by the flow window on left thrust plate to pump.(2) oil extraction process: right thrust plate is embedded in right end cap, respectively drives the circular groove that a cross section is semicircle on the face that right oil distribution casing contacts with right end cap, right end cap and right thrust plate are combined, two semicircle circular grooves are combined to form an annular pass; On right end cap, open a radial hole and annular pass and connect, by this radial hole oil extraction; Special position at the semicircle circular groove of right thrust plate is offered several flow windows, leads to each oil-discharging cavity of pump, and the hydraulic oil in each oil-discharging cavity enters annular pass by flow window, then through radial hole, carries out oil extraction by annular pass.(3) sealing: there is respectively O shape circle in inner side and outside in annular pass for preventing the oil liquid leakage between end cap and thrust plate; Front end at left end cap is equipped with a small end cover in addition, for rigid bearing; Seal ring is equipped with in inside at small end cover, prevents axial leakage of oil.
Accompanying drawing explanation
Fig. 1 is inner curve planetary gear pump schematic diagram.
Fig. 2 is the utility model inner curve planetary gear pump flow distribution apparatus structural representation.
Fig. 3 is left end cap structural drawing in Fig. 2.
Fig. 4 is Fig. 2 middle left and right port plate structure figure.
Fig. 5 is right end cap structural drawing in Fig. 2.
1. seal rings in figure, 2. screw, 3. small end cover, 4. bearing, 5. left end cap, 6. left thrust plate, 7. bolt, 8. packing ring, 9. nut, 10. inner curve gear ring, 11. right end caps, 12. right thrust plates, 13.O shape circle, 14. planet wheels, 15 central gears, 16. bearings.
Embodiment
In Fig. 2, the utility model mainly comprises left end cap (5), left thrust plate (6), right end cap (11), right thrust plate (12), left thrust plate (6) is embedded in left end cap (5), right thrust plate (12) is embedded in right end cap (11), utilize bolt by left end cap (5), inner curve gear ring (10) and right end cap (11) link up, central gear (15) is gear shaft, its left side is supported on left end cap (5) by bearing (4), the right is supported on right end cap (11) by bearing (16), between central gear (15) and inner curve gear ring (10), there is several rows star-wheel (14), planet wheel (14) and central gear (15), inner curve gear ring (10) is meshed, the front end of left end cap (5) is equipped with a small end cover (3), for rigid bearing (4), in the inside of small end cover (3), seal ring (1) is housed, and prevents axial leakage of oil.On the face contacting with left thrust plate (6) at left end cap (5), respectively drive the circular groove that a cross section is semicircle, left end cap (5) and left thrust plate (6) are combined, and two semicircle circular grooves are combined to form an annular pass; On left end cap (5), open a radial hole and annular pass and connect, by this radial hole, be connected with oil inlet pipe; Special position at the semicircle circular groove of left thrust plate (6) is offered several flow windows, leads to each oil sucting cavity of pump; The fluid that oil inlet pipe provides enters annular pass, each oil sucting cavity fuel feeding by the flow window on left thrust plate (6) to pump; On the face contacting with right end cap (11) at right oil distribution casing (12), respectively drive the circular groove that a cross section is semicircle, right end cap (11) and right thrust plate (12) are combined, and two semicircle circular grooves are combined to form an annular pass; On right end cap (11), open a radial hole and annular pass and connect, by this radial hole oil extraction; Special position at the semicircle circular groove of right thrust plate (12) is offered several flow windows, leads to each oil-discharging cavity of pump, and the hydraulic oil in each oil-discharging cavity enters annular pass by flow window, then through radial hole, carries out oil extraction by annular pass.
Claims (4)
1. an inner curve planetary gear pump flow distribution apparatus, mainly comprise left end cap (5), left thrust plate (6), right end cap (11), right thrust plate (12), left thrust plate (6) is embedded in left end cap (5), right thrust plate (12) is embedded in right end cap (11), utilizes bolt that left end cap (5), inner curve gear ring (10) and right end cap (11) are linked up.
2. inner curve planetary gear pump flow distribution apparatus according to claim 1, it is characterized in that: on the face that left end cap (5) contacts with left thrust plate (6), respectively drive the circular groove that a cross section is semicircle, left end cap (5) and left thrust plate (6) are combined, two semicircle circular grooves are combined to form an annular pass, on left end cap (5), open a radial hole and annular pass and connect, the special position of the semicircle annular pass of left thrust plate (6) is offered several flow windows.
3. inner curve planetary gear pump flow distribution apparatus according to claim 1, it is characterized in that: on the face that right oil distribution casing (12) contacts with right end cap (11), respectively drive the circular groove that a cross section is semicircle, right end cap (11) and right thrust plate (12) are combined, two semicircle circular grooves are combined to form an annular pass, on right end cap (11), open a radial hole and annular pass and connect, the special position of the semicircle annular pass of right thrust plate (12) is offered several flow windows.
4. inner curve planetary gear pump flow distribution apparatus according to claim 1, it is characterized in that: central gear (15) is gear shaft, its left side is supported on left end cap (5) by bearing (4), the right is supported on right end cap (11) by bearing (16), the front end of left end cap (5) is equipped with a small end cover (3), and seal ring (1) is equipped with in the inside of small end cover (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597639.3U CN203516099U (en) | 2013-09-26 | 2013-09-26 | Flow distribution device for internal-curve planet gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597639.3U CN203516099U (en) | 2013-09-26 | 2013-09-26 | Flow distribution device for internal-curve planet gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203516099U true CN203516099U (en) | 2014-04-02 |
Family
ID=50375037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320597639.3U Expired - Fee Related CN203516099U (en) | 2013-09-26 | 2013-09-26 | Flow distribution device for internal-curve planet gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203516099U (en) |
-
2013
- 2013-09-26 CN CN201320597639.3U patent/CN203516099U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20140926 |
|
| EXPY | Termination of patent right or utility model |