CN202811347U - Double gear pump for engineering machinery - Google Patents
Double gear pump for engineering machinery Download PDFInfo
- Publication number
- CN202811347U CN202811347U CN 201220493041 CN201220493041U CN202811347U CN 202811347 U CN202811347 U CN 202811347U CN 201220493041 CN201220493041 CN 201220493041 CN 201220493041 U CN201220493041 U CN 201220493041U CN 202811347 U CN202811347 U CN 202811347U
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- oil
- pump
- engineering machinery
- seat
- gear pump
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Abstract
The utility model relates to a hydraulic oil pump, and particularly relates to a double gear pump for engineering machinery. The utility model mainly solves the technical problems that in the prior art, if multiple oil ways are required, more than two gear pumps are required to be adopted, therefore, a hydraulic system is relatively complicated in structure, and the connection of pipes is more complicated, and the like. The double gear pump disclosed by the utility model comprises an oil pump seat, the oil pump seat is sequentially connected with an intermediate and a pump cover, a driving shaft passes through the oil pump seat, the intermediate and the pump cover, the driving shaft is respectively connected with two driven gears through two driving gears, a driven shaft passes through the insides of the two driven gears, the two driving gears and the two driven gears divide the inner cavity of the gear pump into an oil compressing cavity A, an oil compressing cavity B and two oil absorption cavities, the two oil absorption cavities are mutually communicated, the oil compressing cavity A and the oil compressing cavity B are respectively communicated with an oil outlet A and an oil outlet B, and the oil absorption cavities are communicated with an oil inlet.
Description
Technical field
The utility model relates to a kind of hydraulic-pressure pump, especially relates to a kind of engineering machinery duplex gear pump.
Background technique
China loader field is to be in the high speed development stage at present, and product is to high technology level, high quality, high reliability future development.Particularly accelerating to the speed of the future developments such as efficient, energy-conservation, safety, environmental protection and variable full hydraulic system, microelectronic technology, double dynamical pattern.Product variety is to large-scale, small-sized, particularly large-scale and multipurpose, tailored version future development.Product performance are drawn close to international most advanced level, and product has begun to enter the developed country markets such as European Union, North America.Aspect manufacturing technology to " becoming more meticulous " future development.Simultaneously, each main main frame manufacturing enterprise and main auxiliary equipment enterprise all are devoted to develop the main foundation spares such as the driving component, hydraulic parts, electric elements of high technology level more, and the development of China's loader has entered a new stage.
Gear pump is as the core of loader gearbox hydraulic system, very huge effect is arranged, development along with technology, industry is just rapidly progressive towards the high technology substantially horizontal, corresponding traditional low cost, the low technical gear pump can not satisfy growing technical need, and therefore a kind of loader of urgent invention solves the hydraulicdriven demand of novel loader with the driving cog wheel pump.And if when at present needing the multichannel oil circuit, must adopt plural gear pump, therefore can cause comparatively complexity of hydraulic system structure, the connection of pipeline is comparatively numerous and diverse.
The model utility content
The utility model provides a kind of engineering machinery duplex gear pump, if it mainly is to solve when prior art is existing to need the multichannel oil circuit, must adopt plural gear pump, therefore can cause hydraulic system structure comparatively complicated, the technical problem of the comparatively numerous and diverse grade of the connection of pipeline.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
Engineering machinery duplex gear pump of the present utility model, comprise the oil pump seat, described oil pump seat is connected with intermediate, pump cover in turn, cross-under has driving shaft in oil pump seat, intermediate, the pump cover, driving shaft connects respectively two driven gears by two driving gears, two inner cross-under driven shafts of driven gear, two driving gears and two driven gears are separated into pumping cavity A, pumping cavity B and two oil sucting cavities with the gear pump inner chamber, two oil sucting cavities interconnect, pumping cavity A, pumping cavity B are communicated with respectively oil outlet A, oil outlet B, and oil sucting cavity is communicated with filler opening.This gear pump mainly contains oil pump seat, intermediate, pump cover, bearing cap, female splined shaft, driven shaft, driving gear, driven gear and other such as composite bearing, elastic washer, and the standard piece such as seal ring form.Mainly by flower countershaft in the driven by motor, driven gear is secondary again in the rotation of this gear pump, by filler opening, and oil outlet, oil outlet, and oil duct is finished.The utlity model has 1 filler opening, 2 oil outlets.The advantage of this design to need only to be a pump just can reach the effect of two pumps, thereby make hydraulic system structure compact, the pipeline connection that has reduced.Adopt 1 axle to drive the principle (namely 2 pumps are combined into 1 pump) that 2 sleeve gear pairs are moved simultaneously in the oil pump design of the present utility model, this design advantage is to guarantee 2 synchronisms that oil outlet is fuel-displaced.The design that driven shaft drills through in the middle of adopting, its Main Function is to connect with pump cover by driven shaft, and pump cover is connected with female splined shaft, and female splined shaft and oil pump seated connection are logical, and the method that oil pump seat and driven shaft are connected reaches the effect of oil return.Oil pump seat and bearing cap are separately made, and connect fastening with socket head screw, elastic washer.
As preferably, described driving shaft is female splined shaft.The design concept of female splined shaft is that the present invention is that one side connects external power supply, and one side connects other oil pumps, adopts the drive method of spline, is characterized in guaranteeing that higher coaxality, driving torque are large, link can be realized larger moving axially.
As preferably, described driving gear and driving shaft adopt a flat key to link together.Can not only reach like this demand of transmission, and cost is lower.Adopt the mode of flat key to drive the driven shaft rotation by 1 driven gear, other adopts circlip for shaft that driven shaft and another driven gear are fixed, the method is with not only with the driven shaft axial restraint, make it axially not to be subjected to displacement, and driven shaft is rotated, reduced because of the passing of time and got rusty, the generation of the phenomenon such as stuck.
As preferably, be fixed together by hexagon socket head cap screw, hollow pin between described oil pump seat, intermediate, the pump cover.Can reduce processing cost like this, only need just can reach the location and be connected fastening effect in a hole.
As preferably, an end of described driving shaft is provided with rolling bearing, and rolling bearing is provided with bearing cap outward.
As preferably, between described driving shaft and oil pump seat, intermediate, the pump cover, and all be provided with composite bearing between driven shaft and oil pump seat, intermediate, the pump cover.Composite bearing can make oil pump under the bad working environments without oil or few oil, guarantees the working life of oil pump.
As preferably, between described oil pump seat and the intermediate, all be provided with the O RunddichtringO between intermediate and the pump cover.Can guarantee that like this oil leakage phenomenon does not occur oil pump.
As preferably, be equipped with identical compensating groove in described oil pump seat, intermediate, the pump cover.Compensating groove can solve the entrap phenomenon that oil pump may occur, and reduces noise, the working life that has strengthened oil pump.
Therefore, the utility model utilizes 1 filler opening and 2 oil outlets, so that only need a pump just can reach the effect of two pumps, thereby make hydraulic system structure compact, and the pipeline connection that has reduced is simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model;
Accompanying drawing 2 is working principle schematic representation of the present utility model;
Accompanying drawing 3 is A-A cross-sectional view of Fig. 2.
Component, position and numbering among the figure: oil pump seat 1, intermediate 2, pump cover 3, driving shaft 4, driving gear 5, driven gear 6, driven shaft 7, pumping cavity A8, pumping cavity B9, oil sucting cavity 10, oil outlet A11, oil outlet B12, filler opening 13, flat key 14, hexagon socket head cap screw 15, hollow pin 16, rolling bearing 17, bearing cap 18, composite bearing 19, O RunddichtringO 20.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the engineering machinery duplex gear pump that this is routine, such as Fig. 1, Fig. 2, Fig. 3, an oil pump seat 1 is arranged, the oil pump seat is connected with intermediate 2, pump cover 3 in turn by hexagon socket head cap screw 15, hollow pin 16, cross-under has driving shaft 4 in oil pump seat, intermediate, the pump cover, driving shaft is female splined shaft, and an end of driving shaft is provided with rolling bearing 17, and rolling bearing is provided with bearing cap 18 outward.Driving shaft connects respectively two driven gears 6 by two driving gears 5, and driving gear and driving shaft adopt a flat key 14 to link together.Two inner cross-under driven shafts 7 of driven gear, two driving gears and two driven gears are separated into pumping cavity A8, pumping cavity B9 and two oil sucting cavities 10 with the gear pump inner chamber, two oil sucting cavities interconnect, pumping cavity A, pumping cavity B are communicated with respectively oil outlet A11, oil outlet B12, and oil sucting cavity is communicated with filler opening 13.Between driving shaft and oil pump seat, intermediate, the pump cover, and all be provided with composite bearing 19 between driven shaft and oil pump seat, intermediate, the pump cover.Between oil pump seat and the intermediate, all be provided with O RunddichtringO 20 between intermediate and the pump cover.Be equipped with identical compensating groove in oil pump seat, intermediate, the pump cover.
During use, such as Fig. 2, at first power source drives driving shaft 4 by as shown in the figure direction rotation, driving driving gear 5 by flat key 14 rotates, driving gear 5 drives driven gear 6 and rotates, and the gear teeth that meshing in the oil sucting cavity 10 this moment are thrown off gradually and increased sealed volume, forms parital vacuum, fluid enters oil sucting cavity 10 through fuel sucking pipe under the effect of atmospheric pressure; The gear teeth mesh in succession, when the gear teeth enter between cog, and volume reducing, the fluid that brings to pumping cavity B9 and pumping cavity A8 from oil sucting cavity 10 is forced out outside the pump from oil outlet B12, oil outlet A11 respectively.
The above only is specific embodiment of the utility model, but structure characteristic of the present utility model is not limited to this, any those skilled in the art is in field of the present utility model, and the variation of doing or modification all are encompassed among the claim of the present utility model.
Claims (8)
1. engineering machinery duplex gear pump, comprise oil pump seat (1), it is characterized in that described oil pump seat (1) is connected with intermediate (2) in turn, pump cover (3), the oil pump seat, intermediate, cross-under has driving shaft (4) in the pump cover, driving shaft connects respectively two driven gears (6) by two driving gears (5), two inner cross-under driven shafts (7) of driven gear, two driving gears and two driven gears are separated into pumping cavity A(8 with the gear pump inner chamber), pumping cavity B(9) with two oil sucting cavity (10), two oil sucting cavities interconnect, pumping cavity A, pumping cavity B is communicated with respectively oil outlet A(11), oil outlet B(12), oil sucting cavity is communicated with filler opening (13).
2. engineering machinery duplex gear pump according to claim 1 is characterized in that described driving shaft (4) is female splined shaft.
3. engineering machinery duplex gear pump according to claim 1 and 2 is characterized in that described driving gear (5) and driving shaft (4) adopt a flat key (14) to link together.
4. engineering machinery duplex gear pump according to claim 1 and 2 is characterized in that being fixed together by hexagon socket head cap screw (15), hollow pin (16) between described oil pump seat (1), intermediate (2), the pump cover (3).
5. engineering machinery duplex gear pump according to claim 1 and 2 is characterized in that an end of described driving shaft (4) is provided with rolling bearing (17), and rolling bearing is provided with bearing cap (18) outward.
6. engineering machinery duplex gear pump according to claim 1 and 2, it is characterized in that between described driving shaft (4) and oil pump seat (1), intermediate (2), the pump cover (3), and all be provided with composite bearing (19) between driven shaft (7) and oil pump seat (1), intermediate (2), the pump cover (3).
7. engineering machinery duplex gear pump according to claim 1 and 2 is characterized in that between described oil pump seat (1) and the intermediate (2), all is provided with O RunddichtringO (20) between intermediate and the pump cover (3).
8. engineering machinery duplex gear pump according to claim 1 and 2 is characterized in that described oil pump seat (1), intermediate (2), pump cover are equipped with identical compensating groove in (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493041 CN202811347U (en) | 2012-09-26 | 2012-09-26 | Double gear pump for engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220493041 CN202811347U (en) | 2012-09-26 | 2012-09-26 | Double gear pump for engineering machinery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811347U true CN202811347U (en) | 2013-03-20 |
Family
ID=47870230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220493041 Expired - Lifetime CN202811347U (en) | 2012-09-26 | 2012-09-26 | Double gear pump for engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811347U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975474A (en) * | 2018-01-05 | 2018-05-01 | 湖南机油泵股份有限公司 | A kind of three-level lubricating oil pump |
-
2012
- 2012-09-26 CN CN 201220493041 patent/CN202811347U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107975474A (en) * | 2018-01-05 | 2018-05-01 | 湖南机油泵股份有限公司 | A kind of three-level lubricating oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |