CN102094812A - Power takeoff gear pump - Google Patents
Power takeoff gear pump Download PDFInfo
- Publication number
- CN102094812A CN102094812A CN2009101552588A CN200910155258A CN102094812A CN 102094812 A CN102094812 A CN 102094812A CN 2009101552588 A CN2009101552588 A CN 2009101552588A CN 200910155258 A CN200910155258 A CN 200910155258A CN 102094812 A CN102094812 A CN 102094812A
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- China
- Prior art keywords
- gear
- driving shaft
- front cover
- pump housing
- driving
- 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.)
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- General Details Of Gearings (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to a power takeoff gear pump which is mainly characterized in that a driving connection mechanism comprises a coaxial coupling sleeve and a hollow connecting flange, wherein the connecting flange is fixedly arranged on a front end cover through a fastening device, the coaxial coupling sleeve is arranged in the hollow cavity of the connecting flange and sheathed on a driving shaft so as to enable a power takeoff and a gear pump to be connected into a whole, thus the power takeoff gear pump has the advantages of more reliable strength safety, smaller volume, lighter weight and higher coaxial precision and more stable rotation; and the service life is prolonged by 2 times.
Description
One, technical field:
The present invention relates to a kind of power take-off gear pump, the power take-off gear pump of hydraulic systems such as a kind of specifically dump truck to domestic and international application, crab, excavator connects the transmission critical piece.
Two, background technique:
The power take-off gear pump drive mechanism of present domestic and international application, adopt Cardan shaft, flexible joint to connect transmission, its shortcoming is: complex structure, volume is big, cost is high, coaxial low precision, flexible rotation cause gear pump radial force inequality, the generation pulsating is moving, thorax is swept in the monolateral pressure pump housing and the top heavy wear of gear during high pressure, vibration noise is big, volumetric efficiency is low, working life is short, is power take-off gear pump problem to be solved.
Three, summary of the invention:
Purpose of the present invention will overcome above-mentioned defective exactly, provide a kind of alternative Cardan shaft flexible joint to connect the kind of drive, and precision height simple in structure, coaxial, the connection driving mechanism that volume is little, in light weight, intensity is high, cost is low, performance is safe and reliable the invention provides following technological scheme for this reason:
The power take-off gear pump; comprise front cover; rear end cover; the splayed shape pump housing and transmission connecting mechanism; front cover and rear end cover are arranged on splayed shape pump housing two ends; rear end cover is provided with filler opening; high pressure oil outlet and reduction valve; reduction valve is arranged on the high pressure oil outlet; and be connected with filler opening; the amount of opening according to the variation automatic regulating valve core of pressure and flow; realize the voltage-stabilizing protection effect; be provided with driving shaft in the splayed shape pump housing; driving gear and driven gear; driving gear is installed on the driving shaft; driven gear is by axle; bearing is placed in the splayed shape pump housing; driving gear and driven gear engagement; driving gear and driven gear both sides are provided with Eight characters wearing plate; can prevent gear wear; driving shaft is placed in the splayed shape pump housing by bearing and stretches out front cover; the driving shaft of front cover stretches out the hole and is provided with oil sealing; prevent that oil spill from going out; it is characterized in that: described transmission connecting mechanism comprises the adpting flange of coaxial shaft joint cover and hollow; adpting flange is fixedly mounted on the described front cover by securing means; coaxial shaft joint is set in the hollow cavity of adpting flange and is set in driving shaft and is in transmission connection with driving shaft formation, and power take-off and gear pump are connected as a single entity.
As the further of technique scheme improved and replenish, the present invention also comprises following additional technical feature:
Described bearing is the DU self oiling bearing.
All be provided with W shape oil clearance groove on described front cover and the rear end cover, make Eight characters wearing plate axial pressure difference clearance automatic compensation.
Use the present invention can reach following beneficial effect: by coaxial shaft joint cover and adpting flange are set, replaced having now with device and connected with the universal transmission shaft flexible joint that connects, make that power take-off gear pump Strength Safety is more reliable, volume is littler, weight is lighter, coaxial precision is higher, rotation is more steady, and improved 2 times working life.
Four, description of drawings:
Fig. 1 is a sectional drawing of the present invention.
Fig. 2 is the plan view of front cover of the present invention.
Fig. 3 is the sectional drawing of coaxial shaft joint cover of the present invention.
Fig. 4 is the stereogram of adpting flange of the present invention.
Among the figure: 1, filler opening; 2, high pressure oil outlet; 3, reduction valve; 4, rear end cover; 5, driven gear; 6, driving gear; 7, the splayed shape pump housing; 8, DU self oiling bearing; 9, Eight characters wearing plate; 10, oil sealing; 11, front cover; 12, driving shaft; 13, coaxial shaft joint cover; 14, adpting flange; 15, W shape oil clearance groove.
Five, embodiment:
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in detail.
As Fig. 1～shown in Figure 4, the present invention includes front cover 11, rear end cover 4, the splayed shape pump housing 7 and transmission connecting mechanism, front cover 11 and rear end cover 4 are arranged on the two ends of the splayed shape pump housing 7, front cover is provided with W shape oil clearance groove 15, rear end cover 4 is provided with filler opening 1, high pressure oil outlet 2, reduction valve 3 and W shape oil clearance groove, reduction valve 3 is arranged on the high pressure oil outlet 2, and be connected with filler opening 1, be provided with driving shaft 12 in the splayed shape pump housing 7, driving gear 6 and driven gear 5, driving gear 6 is installed on the driving shaft 12, driven gear 5 is by axle, DU self oiling bearing 8 is placed in the splayed shape pump housing 7, driving gear 6 and driven gear 5 engagements, driving gear 6 and driven gear 5 both sides are provided with Eight characters wearing plate 9, driving shaft 12 is placed in the splayed shape pump housing 7 by DU self oiling bearing 8 and stretches out front cover 11, the driving shaft of front cover 11 stretches out the hole and is provided with oil sealing 10, transmission connecting mechanism comprises the adpting flange 14 of coaxial shaft joint cover 13 and hollow, adpting flange 14 is fixedly mounted on the front cover 11 by securing means, and coaxial shaft joint cover 13 is arranged in the hollow cavity of adpting flange 14 and is set in driving shaft 12 and forms with driving shaft 12 and be in transmission connection.
Claims (3)
1. power take-off gear pump, comprise front cover (11), rear end cover (4), the splayed shape pump housing (7) and transmission connecting mechanism, front cover (11) and rear end cover (4) are arranged on the splayed shape pump housing (7) two ends, rear end cover (4) is provided with filler opening (1), high pressure oil outlet (2) and reduction valve (3), reduction valve (3) is arranged on the high pressure oil outlet (2), and be connected with filler opening (1), be provided with driving shaft (12) in the splayed shape pump housing (7), driving gear (6) and driven gear (5), driving gear (6) is installed on the driving shaft (12), driven gear (5) is by axle, bearing is placed in the splayed shape pump housing (7), driving gear (12) and driven gear (5) engagement, driving gear (12) and driven gear (5) both sides are provided with Eight characters wearing plate (9), driving shaft (12) is placed in the splayed shape pump housing (7) by bearing and stretches out front cover (11), the driving shaft of front cover (11) stretches out the hole and is provided with oil sealing (10), it is characterized in that: described transmission connecting mechanism comprises the adpting flange (14) of coaxial shaft joint cover (13) and hollow, adpting flange (14) is fixedly mounted on the described front cover (11) by securing means, and coaxial shaft joint cover (13) is arranged in the hollow cavity of adpting flange (14) and is set in driving shaft (12) and forms with driving shaft (12) and be in transmission connection.
2. power take-off gear pump as claimed in claim 1 is characterized in that: described bearing (8) is the DU self oiling bearing.
3. power take-off gear pump as claimed in claim 1 is characterized in that: described front cover (11) and rear end cover (4) are provided with W shape oil clearance groove (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101552588A CN102094812A (en) | 2009-12-10 | 2009-12-10 | Power takeoff gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101552588A CN102094812A (en) | 2009-12-10 | 2009-12-10 | Power takeoff gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102094812A true CN102094812A (en) | 2011-06-15 |
Family
ID=44128035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101552588A Pending CN102094812A (en) | 2009-12-10 | 2009-12-10 | Power takeoff gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102094812A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410217A (en) * | 2011-11-10 | 2012-04-11 | 青州市天润液压科技有限公司 | Directly-connected oil pump for dump truck |
| CN104100591A (en) * | 2013-04-01 | 2014-10-15 | 重庆航宇实业有限公司 | Engineering vehicle hydraulic pump valve integrated system |
| CN105917119A (en) * | 2013-11-26 | 2016-08-31 | 伍德沃德有限公司 | Gear pump bearing dam |
-
2009
- 2009-12-10 CN CN2009101552588A patent/CN102094812A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410217A (en) * | 2011-11-10 | 2012-04-11 | 青州市天润液压科技有限公司 | Directly-connected oil pump for dump truck |
| CN104100591A (en) * | 2013-04-01 | 2014-10-15 | 重庆航宇实业有限公司 | Engineering vehicle hydraulic pump valve integrated system |
| CN105917119A (en) * | 2013-11-26 | 2016-08-31 | 伍德沃德有限公司 | Gear pump bearing dam |
| US9932980B2 (en) | 2013-11-26 | 2018-04-03 | Woodward, Inc. | Gear pump bearing dam |
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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 | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110615 |