CN1490524A - Hydraulic gear pump - Google Patents
Hydraulic gear pump Download PDFInfo
- Publication number
- CN1490524A CN1490524A CNA021357196A CN02135719A CN1490524A CN 1490524 A CN1490524 A CN 1490524A CN A021357196 A CNA021357196 A CN A021357196A CN 02135719 A CN02135719 A CN 02135719A CN 1490524 A CN1490524 A CN 1490524A
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- China
- Prior art keywords
- axle center
- line
- driving gear
- housing
- gear
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
A hydraulic gear pump is composed of a casing with oil sucking inlet communicated to oil sucking cavity and oil discharging outlet communicated with oil discharging cavity, drive gear and its output shaft extended out of the casing, and drive gear. There are two side plates at both sides of drive and driven gears and on said side plates where are sealing rings. Said oil sucking cavity has a certain geometric relation to said drive and driven gears.
Description
Affiliated technical field:
What the present invention relates to is the pump class, especially a kind of outer gearing hydraulic gear pump.
Background technique:
In the prior art, the outer gearing hydraulic gear pump is symplex structure, be the split and the master of oil sucting cavity, the split of driven gear axis normal line is same plane, the gear pump of this structure is in operation, the radial force that driven gear bore is greater than the radial force that driving gear bears, that is to say, the radial force that bearing bore of driven gear both sides is greater than the radial force that driving gear two side bearings are born, therefore, the bearing of driven gear both sides damages in advance than the bearing of driving gear both sides, so the gear pump life-span of symplex structure will be depended on the life-span of driven gear two side bearings.
Summary of the invention:
Purpose of the present invention is exactly at the existing in prior technology deficiency, and a kind of hydraulic gear pump technological scheme is provided.
This programme is realized by following technical measures.Mainly include the driving gear in housing and the housing, driven gear and driving gear stretch out the outer driving gear shaft of housing, at driving gear, there are 8 font side plates the both sides of driven gear, in the behind of side plate the figure-three o-ring groove is arranged, the figure-three seal ring is housed in this groove and locatees sealing by sealing baffle, on housing, there is inlet port to connect oil sucting cavity and is connected oil-discharging cavity with oil drain out, the perpendicular bisector of vertical join line between the characteristics of this programme summit A that is described oil sucting cavity on the A-A of the pump section and the following summit B, and the perpendicular bisector of line is offset a segment distance e between driving gear axle center O1 and the driven gear axle center O2, the direction of skew is to rely on driving gear one side, promptly on the oil sucting cavity angle α between the line of summit A and driving gear axle center O1 and the two axle center line O1O2 greater than the line of summit B under the oil sucting cavity and driven gear axle center O2 and the angle β between the two axle center line O1O2.The concrete characteristics of this programme also have, the figure-three o-ring groove of described side plate, angle α 1 between the line of this groove upper end C and driving gear axis hole axle center O1 and the two axle center line O1O2 elongation lines is less than the line of top D under the groove and driven gear axis hole axle center O2 and the angle β 1 between the two axle center line O1O2 elongation lines.Fan-shaped concave edge of driving gear side on the described side plate and the fan-shaped concave edge of driven gear side, the fan-shaped concave edge of driving gear side is near an end E and the line of driving gear axis hole axle center O1 and the angle α 2 between the two axle center line O1O2 elongation lines of oil sucting cavity side, less than an end F and the line of driven gear axis hole axle center O2 and the angle β 2 two axle center line O1O2 elongation lines between of the fan-shaped concave edge of driven gear side near the oil sucting cavity side.In addition, described housing can be the pump housing and bonnet structural type, can be the structural type of the protecgulum and the pump housing, also can be the structural type of protecgulum, the pump housing and bonnet.
The beneficial effect of this programme can be learnt according to the narration to such scheme, because at the perpendicular bisector of vertical join line between summit A and the following summit B on the A-A of the pump section of oil sucting cavity described in this scheme, and the perpendicular bisector of line is offset a segment distance e between driving gear axle center O1 and the driven gear axle center O2, and the direction of skew is to rely on driving gear one side.This structure illustrates that the oil sucting cavity of housing is partial to driving gear one side, has formed a kind of asymmetrical structural type, and at this moment, the suffered radial pressure of driving gear is greater than the suffered radial pressure of driven gear; Because driving gear is subjected to the reaction force of driven gear when driving driven gear, therefore, make the suffered radial force trend of driving gear and driven gear equate again.This just makes the suffered radial force of the bearing of winner, driven gear both sides basic identical, has reduced the load of driven gear two bearings, has mentioned the working life of bearing, corresponding working life of improving gear pump.This shows that the present invention compared with prior art has outstanding substantive distinguishing features and obvious improvement, its implementation result also is conspicuous.
Description of drawings:
Fig. 1 is the structural representation of the specific embodiment of the invention.
Fig. 2 is the A-A sectional structure schematic representation of Fig. 1.
Fig. 3 is the structural representation at Fig. 1 latus inframedium back side.
Fig. 4 is the structural representation in Fig. 1 latus inframedium front.
1 is the driving gear shaft among the figure, and 2 is driving gear, and 3 is housing, 4 is side plate, and 5 is sealing baffle, and 6 is the figure-three seal ring, 7 is driven gear, and 8 is inlet port, and 9 is oil sucting cavity, 10 is oil-discharging cavity, and 11 is oil drain out, and 12 is the figure-three o-ring groove, 13 is the driving gear axis hole, 14 is the driven gear axis hole, and 15 is the fan-shaped concave edge of driving gear side, and 16 is the fan-shaped concave edge of driven gear side.
Embodiment:
For clearly demonstrating the technical characterstic of this programme, this programme is illustrated below by an embodiment.
By accompanying drawing as can be seen, the hydraulic gear pump of this programme, mainly include the driving gear (2) in housing (3) and the housing (3), driven gear (7) and driving gear (2) stretch out the outer driving gear shaft (1) of housing, in driving gear (2), there are 8 font side plates (4) both sides of driven gear (7), in the behind of side plate (4) figure-three o-ring groove (12) is arranged, figure-three seal ring (6) is housed in this groove (12) and locatees sealing by sealing baffle (5), on housing (3), there is inlet port (8) to connect oil sucting cavity (9) and is connected oil-discharging cavity (10) with oil drain out (11), the described oil sucting cavity of this programme (9) perpendicular bisector of vertical join line between summit A and the following summit B on the A-A of the pump section, and the perpendicular bisector of line is offset a segment distance e between driving gear axle center O1 and the driven gear axle center O2, the size of e will depend on the master, the number of teeth of passive two gears and modulus, the direction of e skew is to rely on driving gear (2) one sides, be that oil sucting cavity (9) is gone up summit A and the line of driving gear axle center O1 and the angle α between the two axle center line O1O2, greater than summit B under the oil sucting cavity (9) and the line of driven gear axle center O2 and the angle β between the two axle center line O1O2, this has just formed a kind of asymmetrical structural type.The figure-three o-ring groove (12) of described side plate (4), angle α 1 between the line of this groove (12) upper end C and driving gear axis hole (13) axle center O1 and the two axle center line O1O2 elongation lines is less than top D under the groove (12) and the line of driven gear axis hole (14) axle center O2 and the angle β 1 between the two axle center line O1O2 elongation lines; Fan-shaped concave edge of driving gear side (15) on the described side plate (4) and the fan-shaped concave edge of driven gear side (16), the fan-shaped concave edge of driving gear side (15) is near an end E and the line of driving gear axis hole (13) axle center O1 and the angle α 2 between the two axle center line O1O2 elongation lines of oil sucting cavity (9) side, less than an end F and the line of driven gear axis hole (14) axle center O2 and the angle β 2 two axle center line O1O2 elongation lines between of the fan-shaped concave edge of driven gear side (16) near oil sucting cavity (9) side, the structural change of side plate (4) is in order to adapt to asymmetrical structural type, and guarantees the axial seal of gear pump and realize that axial hydraulic compensates automatically.In addition, described housing (3) goes for the structural type of the pump housing and bonnet, also goes for the structural type of the protecgulum and the pump housing, or the structural type of protecgulum, the pump housing and bonnet.
Claims (6)
1. hydraulic gear pump, mainly include the driving gear in housing and the housing, driven gear and driving gear stretch out the outer driving gear shaft of housing, at driving gear, there are 8 font side plates the both sides of driven gear, in the behind of side plate the figure-three o-ring groove is arranged, the figure-three seal ring is housed in this groove and locatees sealing by sealing baffle, on housing, there is inlet port to connect oil sucting cavity and is connected oil-discharging cavity with oil drain out, it is characterized in that: described oil sucting cavity perpendicular bisector of vertical join line between summit A and the following summit B on the A-A of the pump section, and the perpendicular bisector of line is offset a segment distance e between driving gear axle center O1 and the driven gear axle center O2, the direction of skew is to rely on driving gear one side, be summit A and the line of driving gear axle center O1 and the angle α between the two axle center line O1O2 on the oil sucting cavity, greater than the line of summit B under the oil sucting cavity and driven gear axle center O2 and the angle β between the two axle center line O1O2.
2. hydraulic gear pump according to claim 1, it is characterized in that: the figure-three o-ring groove of described side plate, angle α 1 between the line of groove upper end C and driving gear axis hole axle center O1 and the two axle center line O1O2 elongation lines is less than the line of top D under the groove and driven gear axis hole axle center O2 and the angle β 1 between the two axle center line O1O2 elongation lines.
3. hydraulic gear pump according to claim 1 and 2, it is characterized in that: fan-shaped concave edge of driving gear side on the described side plate and the fan-shaped concave edge of driven gear side, the fan-shaped concave edge of driving gear side is near an end E and the line of driving gear axis hole axle center O1 and the angle α 2 between the two axle center line O1O2 elongation lines of oil sucting cavity side, less than an end F and the line of driven gear axis hole axle center O2 and the angle β 2 two axle center line O1O2 elongation lines between of the fan-shaped concave edge of driven gear side near the oil sucting cavity side.
4. hydraulic gear pump according to claim 3 is characterized in that: described housing can be the structural type of the pump housing and bonnet.
5. hydraulic gear pump according to claim 3 is characterized in that: described housing can be the structural type of the protecgulum and the pump housing.
6. hydraulic gear pump according to claim 3 is characterized in that: described housing can be the structural type of protecgulum, the pump housing and bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02135719 CN1246589C (en) | 2002-10-14 | 2002-10-14 | Hydraulic gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02135719 CN1246589C (en) | 2002-10-14 | 2002-10-14 | Hydraulic gear pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1490524A true CN1490524A (en) | 2004-04-21 |
| CN1246589C CN1246589C (en) | 2006-03-22 |
Family
ID=34146247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02135719 Expired - Fee Related CN1246589C (en) | 2002-10-14 | 2002-10-14 | Hydraulic gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1246589C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213216A (en) * | 2011-04-13 | 2011-10-12 | 徐州科源液压有限公司 | High-pressure gear pump having rectangular oil outlet |
| CN103802299B (en) * | 2012-11-02 | 2017-07-18 | 住友橡胶工业株式会社 | The manufacture method of gear pump extruder and the extrusion gear used in the extruder |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102141036A (en) * | 2011-04-13 | 2011-08-03 | 徐州科源液压有限公司 | High-pressure gear pump with rectangular oil inlet |
-
2002
- 2002-10-14 CN CN 02135719 patent/CN1246589C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213216A (en) * | 2011-04-13 | 2011-10-12 | 徐州科源液压有限公司 | High-pressure gear pump having rectangular oil outlet |
| CN102213216B (en) * | 2011-04-13 | 2013-05-22 | 徐州科源液压有限公司 | High-pressure gear pump having rectangular oil outlet |
| CN103802299B (en) * | 2012-11-02 | 2017-07-18 | 住友橡胶工业株式会社 | The manufacture method of gear pump extruder and the extrusion gear used in the extruder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1246589C (en) | 2006-03-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060322 Termination date: 20171014 |