CN203879736U - Hydraulic gear pump - Google Patents
Hydraulic gear pump Download PDFInfo
- Publication number
- CN203879736U CN203879736U CN201420270726.2U CN201420270726U CN203879736U CN 203879736 U CN203879736 U CN 203879736U CN 201420270726 U CN201420270726 U CN 201420270726U CN 203879736 U CN203879736 U CN 203879736U
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- Prior art keywords
- gear
- driven
- wheel body
- tooth wheel
- driving
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model discloses a hydraulic gear pump. The hydraulic gear pump comprises a pump body, wherein a first driving gear body, a first driven gear body, a second driving gear body and a second driven gear body are arranged in an inner cavity of the pump body; two ends of the pump body are covered by a front end cover and a rear end cover; an oil seal is arranged inside the front end cover; a floating shaft sleeve is arranged outside an end part gear of the first driving gear body and a head part gear of the second driving gear body; an axial clearance floating compensation device is formed among the end part gear, the head part gear and the floating shaft sleeve; a DU self-lubricating bearing is arranged outside the first driving gear body, the second driving gear body, the first driven gear body and the second driven gear body in a penetration mode; the exterior of the DU self-lubricating bearing is sleeved with a shaft sleeve. The hydraulic gear pump has the advantages of good abrasion resistance, low friction coefficient, long service life, high volumetric efficiency, low noise, strong shock resistance and the like.
Description
Technical field
The utility model relates to a kind of hydraulic gear pump.
Background technique
Hydraulic gear pump is to rely on two or more gears that are sealed in a housing, and the working space volume-variation producing in the intermeshing process of gear is carried the pump of liquid.
In the time that gear rotates, the volume in the space of the side that is out of gear is large from little change, forms vacuum, and liquid is sucked, and the volume in the space of gear engagement side is from diminishing greatly, and liquid is clamp-oned in pipeline and gone.Suction chamber and discharge side are to separate by the line of contact of two gears.The pressure of the exhaust port of hydraulic gear pump depends on the size that pumps place's resistance completely.Hydraulic gear pump relies on the swept volume forming between pumping cylinder and engaging gear change and move and carry liquid or make it supercharging.Outer gearing Double-gear pump structure is that a pair of pitch wheel and pumping cylinder separate suction chamber and discharge side.When gear rotates, the suction chamber side gear teeth mutually between cog volume of disengagement place increase gradually, pressure decreased, and liquid enters between cog under differential pressure action.Along with the rotation of gear, the liquid of between cog is taken to discharge side one by one.At this moment the between cog volume of discharge side side wheel tooth engagement place dwindles gradually, and liquid is discharged.Gear pump is applicable to carry containing solid particle, non-corrosiveness, lubricating liquid that range of viscosities is larger.
But the bearing in current hydraulic gear pump affords axial force, in the time that pump shaft rotates, this axial force backward will force wearing and tearing aggravation in pump, because gear pump inside is by gear face and end face of shaft bush gluing, sealing, in the time that its axial seal end wear is serious, the inner axial seal meeting of pump produces certain gap, and result causes high low pressure oil pocket to be linked up and oil sealing is gone out; Secondly, the radial force that hydraulic gear pump bears is too large, and the radial force that can make pump be subject to exceeds the limit of bearing of oil sealing, will cause oil sealing leakage of oil, meanwhile, also can cause the inner floating buss of pump to damage.Finally cause the features such as mekydro pump volumetric efficiency is low, noise is high, shock resistance is poor, the life-span is short.
Summary of the invention
The utility model is for the deficiencies in the prior art, a kind of hydraulic gear pump is provided, this hydraulic gear pump internal structure adopts axial clearance floating compensation technology, thereby can not cause high low pressure oil pocket to be linked up and make oil sealing leakage of oil, also can not cause the inner floating buss of pump to damage; Adopt DU self oiling bearing technology, thereby reach the effect of radial equilibrium, make hydraulic gear pump there is wear-resisting property good, friction factor is little, the advantages such as long service life, volumetric efficiency is high, noise is low, shock resistance is strong, this hydraulic gear pump is applied to the industries such as the engineering machinery such as fork truck, loader, excavator, hoist, road roller and mine, light industry, environmental sanitation, agricultural machinery.
In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:
A kind of hydraulic gear pump, comprise the pump housing, described pump housing inner chamber is provided with the first driving tooth wheel body, the first driven tooth wheel body, the second driving tooth wheel body and the second driven tooth wheel body, described pump housing two ends are by front cover and rear end cover capping, described front cover inner side is provided with oil sealing, the head gear outside of the end gear of described the first driving tooth wheel body and the second driving tooth wheel body is provided with floating buss, described end gear, between head gear and floating buss, form axial clearance floating compensation device, described the first driving tooth wheel body, the second driving tooth wheel body, the first driven tooth wheel body, the external side of the second driven gear is equipped with DU self oiling bearing, described DU self oiling bearing outside is arranged with axle sleeve.
As further improvement of the utility model, the first active bearings end in described the first driving tooth wheel body is connected with end gear, described the first active bearings middle part is provided with the first driving wheel, described the first driving wheel coordinates by the first driven gear and the first driven tooth wheel body that engage with it, and described the first driven gear is arranged on the first driven bearing of the first driven tooth wheel body.
As further improvement of the utility model, the second active bearings head in described the second driving tooth wheel body is connected with head gear, described the second active bearings middle part is provided with the second driving wheel, described the second driving wheel coordinates by the second driven gear and the second driven tooth wheel body that engage with it, and described the second driven gear is arranged on the second driven bearing of the second driven tooth wheel body.
As further improvement of the utility model, between the head gear of the end gear of described the first driving tooth wheel body and the second driving tooth wheel body, be provided with back-up ring, described DU self oiling bearing is set in the first active bearings, the first driven bearing, the second active bearings, the second driven bearing outside.
As further improvement of the utility model, described the first driving wheel, the first driven gear, the second driving wheel, the second driven gear both sides are all provided with side plate.
As further improvement of the utility model, described pump housing two ends and front cover, rear end cover locate by locating stud after by screw capping.
Beneficial effect: compared with prior art, it has following beneficial effect to the utility model:
The utility model hydraulic gear pump internal structure adopts axial clearance floating compensation technology, thereby can not cause high low pressure oil pocket to be linked up and make oil sealing leakage of oil, also can not cause the inner floating buss of pump to damage; Adopt DU self oiling bearing technology, thereby reach the effect of radial equilibrium, make hydraulic gear pump there is wear-resisting property good, friction factor is little, the advantages such as long service life, volumetric efficiency is high, noise is low, shock resistance is strong, this hydraulic gear pump is applied to the industries such as the engineering machinery such as fork truck, loader, excavator, hoist, road roller and mine, light industry, environmental sanitation, agricultural machinery.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of specification, and for above and other object of the present utility model, feature and advantage can be become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Brief description of the drawings
Fig. 1 is hydraulic gear pump internal structure schematic diagram.
Fig. 2 is hydraulic gear pump front cover structural representation.
Fig. 3 is hydraulic gear pump rear end cover structure schematic diagram.
Embodiment
Consult Fig. 1～3, a kind of hydraulic gear pump, comprise the pump housing 10, the described pump housing 10 inner chambers are provided with the first driving tooth wheel body 20, the first driven tooth wheel body 80, the second driving tooth wheel body 30 and the second driven tooth wheel body 70, the described pump housing 10 two ends are by front cover 101 and rear end cover 102 cappings, described front cover 101 inner sides are provided with oil sealing 105, head gear 301 outsides of the end gear 201 of described the first driving tooth wheel body 20 and the second driving tooth wheel body 30 are provided with floating buss 40, described end gear 201, between head gear 301 and floating buss 40, form axial clearance floating compensation device, thereby can not cause high low pressure oil pocket to be linked up and make oil sealing 105 leakage of oils, can not cause the inner floating buss 40 of pump to damage yet.
Described the first driving tooth wheel body 20, the second driving tooth wheel body 30, the first driven tooth wheel body 80, the second driven tooth wheel body 70 outsides are equipped with DU self oiling bearing 50, and described DU self oiling bearing 50 outsides are arranged with axle sleeve 60.The benefit of doing is like this to make hydraulic gear pump reach the effect of radial equilibrium in working order, makes hydraulic gear pump have wear-resisting property good, and friction factor is little, long service life.
The first active bearings 202 ends in described the first driving tooth wheel body 20 are connected with end gear 201, described the first active bearings 202 middle parts are provided with the first driving wheel 203, described the first driving wheel 203 coordinates by the first driven gear 801 and the first driven tooth wheel body 80 that engage with it, and described the first driven gear 801 is arranged on the first driven bearing 802 of the first driven tooth wheel body 80.When the first driving tooth wheel body 20 is in the time working, the first active bearings 202 in the first driving tooth wheel body 20 is rotated, and drive the first driving wheel 203 and end gear 201 to rotate, by engaging of the first driving wheel 203 and the first driven gear 801, the first driven bearing 802 also starts to rotate, thereby the first driven tooth wheel body 80 is worked.
As preferably, the second active bearings 302 heads in described the second driving tooth wheel body 30 are connected with head gear 301, described the second active bearings 302 middle parts are provided with the second driving wheel 303, described the second driving wheel 303 coordinates by the second driven gear 701 and the second driven tooth wheel body 70 that engage with it, and described the second driven gear 701 is arranged on the second driven bearing 702 of the second driven tooth wheel body 70.When the second driving tooth wheel body 30 is in the time working, the second active bearings 302 in the second driving tooth wheel body 30 is rotated, and drive the second driving wheel 303 and head gear 301 to rotate, by engaging of the second driving wheel 303 and the second driven gear 701, the second driven bearing 702 also starts to rotate, thereby the second driven tooth wheel body 70 is worked.
Between the head gear 301 of the end gear 201 of described the first driving tooth wheel body 20 and the second driving tooth wheel body 30, be provided with back-up ring 100; can protect better like this first active bearings 202 and the second active bearings 302, described DU self oiling bearing 50 is set in the first active bearings 202, the first driven bearing 802, the second active bearings 302, the second driven bearing 702 outsides.Hydraulic gear pump can reach the effect of radial equilibrium in working order better like this, makes hydraulic gear pump have wear-resisting property good, and friction factor is little, long service life.
Described the first driving wheel 203, the first driven gear 801, the second driving wheel 303, the second driven gear 701 both sides are all provided with side plate 90.The benefit of doing is like this protection the first driving wheel 203, the first driven gear 801, the second driving wheel 303, the second driven gear 701.Thereby effectively protect hydraulic gear pump.
The described pump housing 10 two ends and front cover 101, rear end cover 102 by locating stud 104 location after by screw 103 cappings.The benefit of doing is like this convenient for maintaining and changes hydraulic gear pump inner components.
In sum, the utility model hydraulic gear pump internal structure adopts axial clearance floating compensation technology, thereby can not cause high low pressure oil pocket to be linked up and make oil sealing leakage of oil, also can not cause the inner floating buss of pump to damage; Adopt DU self oiling bearing technology, thereby reach the effect of radial equilibrium, make hydraulic gear pump there is wear-resisting property good, friction factor is little, the advantages such as long service life, volumetric efficiency is high, noise is low, shock resistance is strong, this hydraulic gear pump is applied to the industries such as the engineering machinery such as fork truck, loader, excavator, hoist, road roller and mine, light industry, environmental sanitation, agricultural machinery.
Embodiment recited above is described preferred implementation of the present utility model, not design of the present utility model and scope is limited.Do not departing under the prerequisite of the utility model design concept; various modification and improvement that related domain ordinary person makes the technical solution of the utility model; all should drop into protection domain of the present utility model; the technology contents of the utility model request protection, has all been documented in claims.
Claims (6)
1. a hydraulic gear pump, comprise the pump housing (10), the described pump housing (10) inner chamber is provided with the first driving tooth wheel body (20), the first driven tooth wheel body (80), the second driving tooth wheel body (30) and the second driven tooth wheel body (70), the described pump housing (10) two ends are by front cover (101) and rear end cover (102) capping, described front cover (101) inner side is provided with oil sealing (105), it is characterized in that, head gear (301) outside of the end gear (201) of described the first driving tooth wheel body (20) and the second driving tooth wheel body (30) is provided with floating buss (40), described end gear (201), between head gear (301) and floating buss (40), form axial clearance floating compensation device, described the first driving tooth wheel body (20), the second driving tooth wheel body (30), the first driven tooth wheel body (80), the second driven tooth wheel body (70) outside is equipped with DU self oiling bearing (50), described DU self oiling bearing (50) outside is arranged with axle sleeve (60).
2. hydraulic gear pump according to claim 1, it is characterized in that, the first active bearings (202) end in described the first driving tooth wheel body (20) is connected with end gear (201), described the first active bearings (202) middle part is provided with the first driving wheel (203), described the first driving wheel (203) coordinates by the first driven gear (801) and the first driven tooth wheel body (80) that engage with it, and described the first driven gear (801) is arranged on the first driven bearing (802) of the first driven tooth wheel body (80).
3. hydraulic gear pump according to claim 1, it is characterized in that, the second active bearings (302) head in described the second driving tooth wheel body (30) is connected with head gear (301), described the second active bearings (302) middle part is provided with the second driving wheel (303), described the second driving wheel (303) coordinates by the second driven gear (701) and the second driven tooth wheel body (70) that engage with it, and described the second driven gear (701) is arranged on the second driven bearing (702) of the second driven tooth wheel body (70).
4. hydraulic gear pump according to claim 1, it is characterized in that, between the head gear (301) of the end gear (201) of described the first driving tooth wheel body (20) and the second driving tooth wheel body (30), be provided with back-up ring (100), described DU self oiling bearing (50) is set in the first active bearings (202), the first driven bearing (802), the second active bearings (302), the second driven bearing (702) outside.
5. hydraulic gear pump according to claim 2, is characterized in that, described the first driving wheel (203), the first driven gear (801), the second driving wheel (303), the second driven gear (701) both sides are all provided with side plate (90).
6. according to the hydraulic gear pump described in claim 1～5 any one, it is characterized in that, the described pump housing (10) two ends and front cover (101), rear end cover (102) by locating stud (104) location after by screw (103) capping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270726.2U CN203879736U (en) | 2014-05-26 | 2014-05-26 | Hydraulic gear pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270726.2U CN203879736U (en) | 2014-05-26 | 2014-05-26 | Hydraulic gear pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879736U true CN203879736U (en) | 2014-10-15 |
Family
ID=51680239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420270726.2U Expired - Fee Related CN203879736U (en) | 2014-05-26 | 2014-05-26 | Hydraulic gear pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879736U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625101A (en) * | 2014-12-12 | 2015-05-20 | 上海大学 | Double-end output electric main shaft with axial thermal deformation influence eliminating function |
| CN107489611A (en) * | 2017-08-17 | 2017-12-19 | 合肥力威汽车油泵有限公司 | A kind of small impact gear-type oil pump |
-
2014
- 2014-05-26 CN CN201420270726.2U patent/CN203879736U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625101A (en) * | 2014-12-12 | 2015-05-20 | 上海大学 | Double-end output electric main shaft with axial thermal deformation influence eliminating function |
| CN104625101B (en) * | 2014-12-12 | 2017-06-23 | 上海大学 | Electro spindle is exported with the double end for eliminating axial influence of thermal deformation |
| CN107489611A (en) * | 2017-08-17 | 2017-12-19 | 合肥力威汽车油泵有限公司 | A kind of small impact gear-type oil pump |
| CN107489611B (en) * | 2017-08-17 | 2023-04-25 | 合肥力威汽车油泵有限公司 | Small impact gear type oil pump |
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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: 20141015 Termination date: 20150526 |
|
| EXPY | Termination of patent right or utility model |