CN2211506Y - Improved two linkage gear pump - Google Patents
Improved two linkage gear pump Download PDFInfo
- Publication number
- CN2211506Y CN2211506Y CN 94235718 CN94235718U CN2211506Y CN 2211506 Y CN2211506 Y CN 2211506Y CN 94235718 CN94235718 CN 94235718 CN 94235718 U CN94235718 U CN 94235718U CN 2211506 Y CN2211506 Y CN 2211506Y
- Authority
- CN
- China
- Prior art keywords
- pump
- axle
- driving gear
- gear
- oil
- Prior art date
- 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.)
- Expired - Fee Related
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- Rotary Pumps (AREA)
Abstract
The utility model discloses an improved duplex high pressure gear pump, comprising a front pump cover 3, a front pump body 4, an intermediate body 5, a sealing ring 6, a shaft sleeve 7, the back cover 8 of a rear pump, a rear pump body 14, the driving gear shafts 2 and 9 of a front pump and the rear pump, an external spline 11 behind the driving gear shafts, an internal spline 10 matched with the driving gear shafts, the driven gear shaft 17 of the front pump and the driven gear shaft 13 of the rear pump. Both sides of each pair of gears are respectively provided with a side plate 12. The improved duplex high pressure gear pump is characterized in that both sides of the intermediate body 5 are respectively provided with an oil slot 27 and a return chute 22 communicated with the positioning hole 21 and the driven shaft hole 23 of the driving shaft. The improved duplex high pressure gear pump has the advantage that the improved duplex high pressure gear pump is positioned by the positioning hole 21 of the intermediate body, and trapped oil is eliminated by the square return chute 22.
Description
The utility model relates to gear oil pump, particularly the high pressure duplex gear pump.
In existing construction machinery hydraulic system, particularly big-and-middle-sized loader has steering hydraulic system, equipment hydraulic system and power-shift transmission hydraulic system.These systems are independent separately, and compartment also is independent separately as the oil pump of each system, compartment.Mainly have the following disadvantages: each hydraulic system heating, the diesel engine power loss is more, circuit design complexity, difficult arrangement.The purpose of this utility model has been proposed in view of the foregoing.
The purpose of this utility model is for improving above deficiency, designing a kind of improved high pressure duplex gear pump.
The purpose of this utility model realizes according to structure described below.Pump outer identical just as common duplex pump has front pump cover, the preceding pump housing, intermediate, axle sleeve and back pump postoperculum, the back pump housing, front pump driving gear axle and subsequent external splines, the internal spline that rear pump driven gear axle and external splines anterior and on the front pump driving gear axle thereof cooperate.The front pump driven gear axle, the rear pump driving gear axle.There is a side plate both sides of every pair of gear, pump driven gear between centers has a hole in front and back, at the driving gear between centers hole is arranged also, have an inlet port and an oil drain out on each pump housing, front pump and front pump cover, front and back pump and intermediate are located by seam, are one by screw, and " mouth " shape oil-return groove of an annular oil groove and a connection driving shaft positioning hole and driven axis hole (also being two holes) is respectively arranged in the both sides of intermediate.
The axle sleeve of the axle sleeve of front pump driving gear axle and rear pump driven gear axle is located by the positioning hole on the intermediate.
Above structure has promptly realized the purpose of this utility model.The utility model has the advantages that: by the axle sleeve location of the positioning hole on the intermediate to two driving shafts of front and back pump, blowback is changeed with one heart before and after having guaranteed.And eliminated the entrap phenomenon of high pressure by " mouth " shape oil-return groove.Pump housing side at the front and back pump has fan-shaped oil duct, makes oil-feed more unimpeded.The layout of pipeline and design are simple more, convenient.And have low noise, characteristics that technology capability is good.The power consumpiton of diesel engine also decreases.
The following drawings explanation.Accompanying drawing one is a longitudinal sectional drawing of the present utility model, and figure two is the sectional drawings of the A-A among the figure one, and figure three is the B-B sectional drawings among the figure one, and figure four is the C-C sectional drawings among the figure two.Each component serial number name in the accompanying drawings is called: 1 flat key, 2 front pump driving gear axles, 3 front pump covers, the 4 preceding pump housings, 5 intermediates, 6 seal rings, 7 axle sleeves, 8 back pump postoperculums, 9 rear pump driven gear axles, 10 internal splines, 11 external spliness, 12 side plates, 13 rear pump driving gear axles, the 14 back pump housings, 15 driven shaft holes, 16 driving gear shaft holes, 17 front pump driven gear axles, 18 seams, the 19, the 24th, inlet port, 20,25 oil drain outs, 21 driving shaft positioning holes, 22 spill ports, 26 screws, 27 oil grooves.
Embodiment below in conjunction with accompanying drawing describes the utility model in detail.With reference to accompanying drawing, this duplex pump has front pump cover 2, the preceding pump housing 4, intermediate 5, the back pump housing 14, back pump postoperculum 8.Before and after the inner chamber of the pump housing be figure of eight structure, inner have four split axle sleeves 7 and two blocks of integrated type side plates 12 respectively initiatively and the both sides of driven gear.There are front pump driving gear axle 2 and driven gear shaft 17 in front pump inside, and there are rear pump driven gear axle 9 and driven gear shaft 13 in back pump inside, and front pump is by 18 location of the inner stopper on the front pump cover 3, and the front and back pump is also by 21 location of the endoporus on the intermediate 5.The hydraulic oil that leaks in the middle of the pump of front and back enters driven shaft hole 15 through hole 16 through spill port 22, gets back to the oil-feed side of pump then through oil groove 27.The front and back pump tightens together by four screws 26.There is an external splines 11 at the rear portion of front pump driving gear axle 2, and rear pump driven gear axle 9 has an internal spline 10 that cooperates with external splines 11 on the front pump driving gear axle 2.Have an inlet port 19 and an oil drain out 20 on the preceding pump housing, have an inlet port 24 and an oil drain out 25 on the back pump housing, before and after pump be fixed as one by screw 26, the oil-return groove 22 of an oil groove 27 and connection driving shaft positioning hole 21 and driven axis hole 23 is respectively arranged in the both sides of intermediate 5.
The axle sleeve of the axle sleeve of front pump driving gear axle 2 and rear pump driven gear axle 9 is by 21 location of the positioning hole on the intermediate 5.
When pump work, under the driving of power source (diesel engine), by flat key 1(or spline) connect, pass to front pump driving gear axle 2, drive the driving and driven high-speed gear revolution of front pump, front pump is from inlet port 19 oil suctions, through gear engagement, extruding and from oil drain out 20 head pressure oil, supplies with hydraulic system.Back pump cooperates connection by the internal spline 10 of rear pump driven gear axle 9 with the rear portion shaft extension external splines 11 of front pump driving gear axle 2, accepts the moment of torsion that the front pump transmission comes, and drives back pump main driven gear axle 9 and 13 high speed rotating.Back pump sucks fluid from inlet port 24, through gear engagement, extruding, from oil outlet 25 head pressure oil, supplies with corresponding hydraulic system.Because the front and back pump connects by positioning hole 21 location of intermediate 5, the interference of pump makes stable working before and after having eliminated, and flow is even.
Claims (2)
1, a kind of improved duplex high-pressure gear pump, comprise front pump cover 3, the preceding pump housing 4 intermediates 5, seal ring 6, axle sleeve 7, back pump postoperculum 8, the back pump housing 14, front pump driving gear axle 2 and subsequent external splines 11, the internal spline 10 that rear pump driven gear axle 9 and external splines 11 anterior and on the front pump driving gear axle 2 thereof cooperate, front pump driven gear axle 17, rear pump driving gear axle 13, the hole 15 of the side plate 12 of the both sides of every pair of gear and front and back pump driven gear between centers and the hole 16 of driving gear between centers, have an inlet port and an oil drain out on each pump housing, front pump is by inner stopper 18 location of front pump cover, and the front and back pump is by 21 location of the positioning hole on the intermediate 5, be fixed as one by screw 26, it is characterized in that respectively having the oil-return groove 22 of an oil groove 27 and connection driving shaft positioning hole 21 and driven axis hole 23 in the both sides of intermediate 5.
2, according to the described duplex high-pressure gear pump of claim 1, the axle sleeve that it is characterized in that the axle sleeve of said front pump driving gear axle 2 and rear pump driven gear axle 9 is by 21 location of the positioning hole on the intermediate 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235718 CN2211506Y (en) | 1994-11-10 | 1994-11-10 | Improved two linkage gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94235718 CN2211506Y (en) | 1994-11-10 | 1994-11-10 | Improved two linkage gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2211506Y true CN2211506Y (en) | 1995-11-01 |
Family
ID=33843910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94235718 Expired - Fee Related CN2211506Y (en) | 1994-11-10 | 1994-11-10 | Improved two linkage gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2211506Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128165A (en) * | 2011-03-27 | 2011-07-20 | 长治液压有限公司 | Dual-oil inlet hydraulic gear pump |
| CN101565011B (en) * | 2008-04-22 | 2011-07-27 | 富士重工业株式会社 | Work vehicle |
| CN102155401A (en) * | 2011-03-26 | 2011-08-17 | 长治液压有限公司 | High-pressure large-flow dual-united gear pump |
| CN102155402A (en) * | 2011-03-26 | 2011-08-17 | 长治液压有限公司 | Double-oil-outlet speed variable gear pump |
| CN102562583A (en) * | 2012-02-10 | 2012-07-11 | 长治液压有限公司 | Triple gear pump |
| CN102575669A (en) * | 2009-10-12 | 2012-07-11 | 罗伯特·博世有限公司 | Double internal gear pump |
| CN104913038A (en) * | 2015-06-20 | 2015-09-16 | 阜新德尔汽车部件股份有限公司 | Oil conveying device of vehicle automatic transmission |
| CN106996371A (en) * | 2017-04-13 | 2017-08-01 | 天津市汇晶丰精密机械有限公司 | A kind of synchronous gear pump of discharge capacity |
| CN113482912A (en) * | 2021-08-06 | 2021-10-08 | 山东世***压设备有限公司 | Large-discharge-capacity arc spiral gear pump without axial force |
-
1994
- 1994-11-10 CN CN 94235718 patent/CN2211506Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565011B (en) * | 2008-04-22 | 2011-07-27 | 富士重工业株式会社 | Work vehicle |
| CN102575669A (en) * | 2009-10-12 | 2012-07-11 | 罗伯特·博世有限公司 | Double internal gear pump |
| CN102155401A (en) * | 2011-03-26 | 2011-08-17 | 长治液压有限公司 | High-pressure large-flow dual-united gear pump |
| CN102155402A (en) * | 2011-03-26 | 2011-08-17 | 长治液压有限公司 | Double-oil-outlet speed variable gear pump |
| CN102128165A (en) * | 2011-03-27 | 2011-07-20 | 长治液压有限公司 | Dual-oil inlet hydraulic gear pump |
| CN102562583A (en) * | 2012-02-10 | 2012-07-11 | 长治液压有限公司 | Triple gear pump |
| CN104913038A (en) * | 2015-06-20 | 2015-09-16 | 阜新德尔汽车部件股份有限公司 | Oil conveying device of vehicle automatic transmission |
| CN106996371A (en) * | 2017-04-13 | 2017-08-01 | 天津市汇晶丰精密机械有限公司 | A kind of synchronous gear pump of discharge capacity |
| CN113482912A (en) * | 2021-08-06 | 2021-10-08 | 山东世***压设备有限公司 | Large-discharge-capacity arc spiral gear pump without axial force |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |