CN203962368U - A kind of oil hydraulic pump with oil sealing protective gear - Google Patents
A kind of oil hydraulic pump with oil sealing protective gear Download PDFInfo
- Publication number
- CN203962368U CN203962368U CN201420204961.XU CN201420204961U CN203962368U CN 203962368 U CN203962368 U CN 203962368U CN 201420204961 U CN201420204961 U CN 201420204961U CN 203962368 U CN203962368 U CN 203962368U
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- Prior art keywords
- oil
- main shaft
- oil sealing
- protective gear
- seal ring
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- 238000007789 sealing Methods 0.000 title claims abstract description 70
- 230000001681 protective effect Effects 0.000 title claims abstract description 52
- 230000000694 effects Effects 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 3
- 230000009993 protective function Effects 0.000 abstract description 6
- 239000003921 oil Substances 0.000 description 112
- 230000008901 benefit Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000012208 gear oil Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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- Details And Applications Of Rotary Liquid Pumps (AREA)
Abstract
The utility model relates to a kind of oil hydraulic pump with oil sealing protective gear, comprising: housing, bonnet, main shaft, swash plate, backhaul plate, ball bowl, plunger piston slippery boots pair, cylinder body, thrust plate, bearing cap, the bearing that is arranged at the oil sealing in bearing cap and arranges near bearing cap on the main shaft of housing inner chamber; Wherein, be also provided with oil sealing protective gear on the main shaft of housing inner chamber, oil sealing protective gear is between bearing and swash plate; Oil sealing protective gear comprises: oil seal ring and spring; Oil seal ring is sheathed on main shaft, and near swash plate, and its both side surface has gap respectively and between swash plate and housing; Spring is Compress Spring, is sheathed on main shaft, and its one end is tight against oil seal ring, and the other end is tight against the first back-up ring being arranged on main shaft for positioning bearing.The utility model can be realized the protective function to oil sealing by oil sealing protective gear is set, thereby improves the efficiency of direct shaft type plunger hydraulic pump, along working life of long straight shaft formula plunger hydraulic pump.
Description
Technical field
The utility model relates to a kind of oil hydraulic pump, particularly relates to a kind of direct shaft type plunger hydraulic pump with oil sealing protective gear.
Background technique
Pluger type hydraulic pump (referred to as plunger pump) is the to-and-fro motion that relies on plunger, and the volume in change plunger case sucks and get rid of the pump of liquid, is a kind of of volume-type hydraulic pump.Plunger pump is other volume-type hydraulic pumps relatively, as gear pump, vane pump, screw pump have that parameter is high, efficiency is high, the life-span is long, variable format is many, can use the advantage such as lightweight of different medium and specific power and be more and more widely used.
As shown in Figure 1, be the partial sectional view of existing direct shaft type plunger hydraulic pump.Existing direct shaft type plunger hydraulic pump mainly by housing 10, bonnet 20, main shaft 30, swash plate 40, backhaul plate 50, ball bowl 60, plunger piston slippery boots pair 70, cylinder body 80, thrust plate 90, bearing cap 100, be arranged at oil sealing 110 in bearing cap 100 and the bearing 130 that arranges near bearing cap 100 forms on the main shaft 30 of housing 10 inner chambers.Wherein, swash plate 40 and thrust plate 90 are fixing, and main shaft 30 drives cylinder body 80 to rotate together with plunger piston slippery boots pair 70, and plunger piston slippery boots pair 70 is pressed on swash plate 40 by backhaul plate 50 by spring.Rotation along with main shaft 30, when plunger piston slippery boots pair 70 is in a rotating half cycle along swash plate 40, plunger piston slippery boots pair 70 is stretched out gradually outside cylinder body 80, and the volume of pressurization working lumen in cylinder bore is constantly increased, produce parital vacuum, thereby the flow window of fluid on thrust plate 90 is inhaled into; When plunger piston slippery boots pair 70 is in the rotating another one half cycle along swash plate 40, plunger piston slippery boots pair 70 is pushed again gradually in cylinder body 80, the volume of pressurization working lumen in cylinder bore is constantly reduced, thereby the flow window of fluid from thrust plate 90 discharged, cylinder body 80 often circles, each plunger to-and-fro motion of plunger piston slippery boots pair 70 once, completes once suction, force feed action.By changing the inclination angle of swash plate 40, can change the Significant Change amount of pressurization working lumen volume, realize the variable of pump.
Due to plunger and cylinder bore, cylinder body 80 and thrust plate 90, between thrust plate 90 and bonnet 20, all there is matching gap, pluger type hydraulic pump is in real work, part hydraulic medium can leak into by these matching gaps the inner chamber of housing 10, especially when fitting surface serious wear, movement part rigging position skew or when the induced pressure of pump raises suddenly, the leakage rate of hydraulic medium can increase, cause the pressure of housing 10 inner chambers to raise suddenly, if the force value raising has surpassed the maximum pressure value that oil sealing 110 can bear, oil sealing 110 is just easy to destroyed, once oil sealing 110 is destroyed, oil hydraulic pump can not work on, this has not only directly affected the overall performance of oil hydraulic pump, and under a lot of operating modes, changing oil sealing 110 is a very loaded down with trivial details job.
As can be seen here, above-mentioned existing direct shaft type plunger hydraulic pump, in structure and use, obviously still has inconvenience and defect, and is urgently further improved.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but have no for a long time applicable design always, by development, completed, and common product does not have appropriate structure to address the above problem, this is obviously the problem that the anxious wish of relevant dealer solves.Therefore how to found a kind of oil hydraulic pump with oil sealing protective gear of new structure, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Because the defect that above-mentioned existing direct shaft type plunger hydraulic pump exists; the design people is based on being engaged in this type of product specification manufacture abundant practical experience and professional knowledge for many years; and the utilization of cooperation scientific principle; positive research and innovation in addition; to founding a kind of oil hydraulic pump with oil sealing protective gear of new structure; can improve general existing direct shaft type plunger hydraulic pump, and have more practicability.Through constantly research, design, and after repeatedly studying sample and improving, finally create the utility model having practical value.
Summary of the invention
The purpose of this utility model is; overcome the defect that existing direct shaft type plunger hydraulic pump exists; and provide a kind of oil hydraulic pump with oil sealing protective gear of new structure; technical problem to be solved is to make it by the inner chamber in direct shaft type plunger hydraulic pump case, arrange that processing is simple, the oil sealing protective gear of reliable performance can be realized the protective function to oil sealing, thereby improves the efficiency of direct shaft type plunger hydraulic pump, along working life of long straight shaft formula plunger hydraulic pump.
The purpose of this utility model and to solve its technical problem be to adopt following technological scheme to realize.According to a kind of oil hydraulic pump with oil sealing protective gear the utility model proposes, it comprises: housing, bonnet, main shaft, swash plate, backhaul plate, ball bowl, plunger piston slippery boots pair, cylinder body, thrust plate, bearing cap, the bearing that is arranged at the oil sealing in described bearing cap and arranges near described bearing cap on the described main shaft of described housing inner chamber; Wherein, on the described main shaft of described housing inner chamber, be also provided with oil sealing protective gear, described oil sealing protective gear is between described bearing and described swash plate; Described oil sealing protective gear comprises: oil seal ring and spring; Described oil seal ring is sheathed on described main shaft, and near described swash plate, and its both side surface has gap respectively and between described swash plate and described housing; Described spring is Compress Spring, is sheathed on described main shaft, and its one end is tight against described oil seal ring, and the other end is tight against and is arranged on described main shaft for locating the first back-up ring of described bearing.
The purpose of this utility model and solve its technical problem and can also be further achieved by the following technical measures.
The aforesaid oil hydraulic pump with oil sealing protective gear; wherein between the above oil seal ring of described main shaft and described swash plate, be provided with the second back-up ring; described oil seal ring is tight against described the second back-up ring under the effect of described spring, and described oil sealing protective gear is positioned between described the first back-up ring and described the second back-up ring.
The aforesaid oil hydraulic pump with oil sealing protective gear; wherein said oil seal ring can be along described motion of main shaft; depart from described the second back-up ring; and can coordinate with described housing the cavity that seals described bearing place, make the cavity at described bearing place and the cavity isolation at described swash plate, described backhaul plate, described ball bowl, described plunger piston slippery boots pair, described cylinder body and described thrust plate place.
The aforesaid oil hydraulic pump with oil sealing protective gear, is wherein provided with Baltimore groove radially at described oil seal ring on the surface near described swash plate one side.
The aforesaid oil hydraulic pump with oil sealing protective gear, is wherein provided with four described Baltimore grooves on the surface near described swash plate one side at described oil seal ring, four described Baltimore grooves are equally spaced being distributed on described surface.
The aforesaid oil hydraulic pump with oil sealing protective gear, wherein said oil seal ring has large end and a small end, and described small end is positioned on the surface of described large end one side, and described main shaft is through described small end and described large end; One end of described spring is to be tight against described small end, and described large end be provided with described small end one side surface and described small end and described housing between there is gap; When described oil seal ring seals the cavity at described bearing place along described motion of main shaft, be that described large end coordinates with described housing to be provided with the surface of described small end one side, now described small end is positioned at the cavity at described bearing place; The surface of described large end opposite side has gap all the time and between described swash plate.
The utility model compared with prior art has obvious advantage and beneficial effect.By technique scheme; a kind of oil hydraulic pump with oil sealing protective gear of the utility model at least has following advantages and beneficial effect: the utility model can be realized the protective function to direct shaft type plunger hydraulic pump oil sealing by oil sealing protective gear is set; thereby can improve the efficiency of direct shaft type plunger hydraulic pump, along working life of long straight shaft formula plunger hydraulic pump, its processing is simple, stable performance.The oil sealing protective gear that while the utility model is realized oil sealing protective function also has promotion medium circulation, the effect of assist medium cooling.
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.
Accompanying drawing explanation
Fig. 1 is the partial sectional view of existing direct shaft type plunger hydraulic pump.
Fig. 2 is the partial sectional view of the preferred embodiment of a kind of oil hydraulic pump with oil sealing protective gear of the utility model.
Fig. 3 is oil sealing protective gear oil seal ring partial enlarged drawing in open mode in oil hydraulic pump in Fig. 2.
Fig. 4 is oil sealing protective gear oil seal ring partial enlarged drawing in closed state in oil hydraulic pump in Fig. 2.
Fig. 5 A and Fig. 5 B are plan view and the sectional views of the preferred embodiment of oil seal ring of the present utility model.
1: oil seal ring, 2: spring
4: the second back-up rings of 3: the first back-up rings
5: Baltimore groove 6: large end
7: small end 10: housing
20: bonnet 30: main shaft
40: swash plate 50: backhaul plate
60: ball bowl 70: plunger piston slippery boots is secondary
80: cylinder body 90: thrust plate
100: bearing cap 110: oil sealing
120: oil sealing protective gear 130: bearing
Embodiment
For further setting forth the utility model, be to reach technological means and the effect that predetermined goal of the invention is taked; below in conjunction with accompanying drawing and preferred embodiment; its embodiment of a kind of oil hydraulic pump with oil sealing protective gear, structure, feature and effect thereof to according to the utility model proposes, be described in detail as follows.
Referring to shown in Fig. 2, is the partial sectional view of the preferred embodiment of a kind of oil hydraulic pump with oil sealing protective gear of the utility model.A kind of oil hydraulic pump with oil sealing protective gear of the utility model mainly by housing 10, bonnet 20, main shaft 30, swash plate 40, backhaul plate 50, ball bowl 60, plunger piston slippery boots pair 70, cylinder body 80, thrust plate 90, bearing cap 100, be arranged at oil sealing 110 in bearing cap 100 and the bearing 130 that arranges near bearing cap 100 forms on the main shaft 30 of housing 10 inner chambers.Wherein, on the main shaft 30 of housing 10 inner chambers, be also provided with oil sealing protective gear 120, oil sealing protective gear 120 is between bearing 130 and swash plate 40.
Refer to shown in Fig. 3 and Fig. 4, Fig. 3 is oil sealing protective gear oil seal ring partial enlarged drawing in open mode in oil hydraulic pump in Fig. 2, and Fig. 4 is oil sealing protective gear oil seal ring partial enlarged drawing in closed state in oil hydraulic pump in Fig. 2.Oil sealing protective gear 120 of the present utility model is mainly comprised of oil seal ring 1 and spring 2.Wherein, oil seal ring 1 is sheathed on main shaft 30, and near swash plate 40, and its both side surface has gap respectively and between swash plate 40 and housing 10.Spring 2 is Compress Spring, is sheathed on main shaft 30, and its one end is tight against oil seal ring 1, and the other end is tight against the first back-up ring 3 being arranged on main shaft 30 for positioning bearing 130.
As shown in Figure 3, be also provided with the second back-up ring 4 on main shaft 30 between oil seal ring 1 and swash plate 40, oil seal ring 1 is tight against the second back-up ring 4 under the effect of spring 2, and oil sealing protective gear 120 is positioned between the first back-up ring 3 and the second back-up ring 4.
As shown in Figure 4; the oil seal ring 1 of oil sealing protective gear 120 of the present utility model can also move along main shaft 30; depart from the second back-up ring 4; and can coordinate with housing 10 cavity that seals bearing 130 places, make the cavity at bearing 130 places and the isolation of the cavity at swash plate 40, backhaul plate 50, ball bowl 60, plunger piston slippery boots pair 70, cylinder body 80 and thrust plate 90 places.
Referring to shown in Fig. 5 A and Fig. 5 B, is plan view and the sectional view of the preferred embodiment of oil seal ring of the present utility model.Oil seal ring 1 of the present utility model can be provided with Baltimore groove 5 radially near on the surface of swash plate 40 1 sides.Under the drive of main shaft 30, oil seal ring 1 can rotate thereupon, Baltimore groove 5 is except having agitaion the medium of housing 10 inner chambers, the medium entering in Baltimore groove 5 also can outwards be thrown away under the effect of centrifugal force, thereby promote the circulation of housing 10 inner chamber media, the cooling of medium is played to booster action.In one embodiment, oil seal ring 1 of the present utility model can arrange four Baltimore grooves 5 radially near on the surface of swash plate 40 1 sides, and these four Baltimore grooves 5 are equally spaced being distributed on the surface of oil seal ring 1 near a side of swash plate 40.
In a preferred embodiment, oil seal ring 1 of the present utility model can have large end 6 and a small end 7, and small end 7 is to be positioned on the surface of large end 6 one sides (as shown in Figure 5 B), and main shaft 30 is through small end 7 and large end 6.Wherein, one end of spring 2 is to be tight against small end 7, and large end 6 is provided with between the surface of small end 7 one sides and small end 7 and housing 10 and has gap (as shown in Figure 3).Oil seal ring 1 along main shaft 30 move sealing bearing 130 places cavity time, be that large end 6 coordinates with housing 10 to be provided with the surface of small end 7 one sides, now small end 7 is positioned at the cavity (as shown in Figure 4) at bearing 130 places.The surface of large end 6 opposite sides has gap all the time and between swash plate 40.
Shown in Fig. 3 and Fig. 4; oil sealing protective gear 120 of the present utility model; when the pressure of housing 10 inner chambers is relatively steadily time; oil seal ring 1 left and right pressure is suitable; active force due to spring 2; oil seal ring 1 is in open mode (as shown in Figure 3), and the medium of oil seal ring 1 arranged on left and right sides can circulate by the backlash freedom between oil seal ring 1 and housing 10.When the leakage rate of oil hydraulic pump increases suddenly; the instantaneous rising of pressure meeting on oil seal ring 1 right side; the active force that acts on oil seal ring 1 right side can be greater than suddenly active force and the spring 2 active force sums that act on oil seal ring 1 left side; thereby promoting oil seal ring 1 is moved to the left along main shaft 30; make oil seal ring 1 coordinate the cavity that seals bearing 130 places with housing 10; oil seal ring 1 is in closed state (as shown in Figure 4); so just cut off oil seal ring 1 impact of right side pressure medium fluctuation on left side medium, realized the protection to left side oil sealing 110.When the pressure of housing 10 inner chambers reaches relatively steadily again, under the active force of spring 2, oil seal ring 1 comes back to the open mode (as shown in Figure 3) when initial.
Therefore; the utility model with the oil hydraulic pump of oil sealing protective gear by the protective function that can realize oil sealing 110 that arranges of oil sealing protective gear 120; the oil seal ring 1 of simultaneously realizing oil sealing protective function also has promotion medium circulation, the effect of assist medium cooling.
The above, it is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any those skilled in the art are not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (6)
1. with an oil hydraulic pump for oil sealing protective gear, it comprises: housing (10), bonnet (20), main shaft (30), swash plate (40), backhaul plate (50), ball bowl (60), plunger piston slippery boots secondary (70), cylinder body (80), thrust plate (90), bearing cap (100), be arranged at oil sealing (110) in described bearing cap (100) and at the upper bearing (130) arranging near described bearing cap (100) of described main shaft (30) of described housing (10) inner chamber;
It is characterized in that:
On the described main shaft (30) of described housing (10) inner chamber, be provided with oil sealing protective gear (120), described oil sealing protective gear (120) is positioned between described bearing (130) and described swash plate (40);
Described oil sealing protective gear (120) comprising: oil seal ring (1) and spring (2); It is upper that described oil seal ring (1) is sheathed on described main shaft (30), and near described swash plate (40), and its both side surface has gap respectively and between described swash plate (40) and described housing (10); Described spring (2) is Compress Spring, be sheathed on described main shaft (30), its one end is tight against described oil seal ring (1), and the other end is tight against and is arranged at described main shaft (30) above for locating first back-up ring (3) of described bearing (130).
2. the oil hydraulic pump with oil sealing protective gear according to claim 1; it is characterized in that wherein between the above oil seal ring of described main shaft (30) (1) and described swash plate (40), being provided with the second back-up ring (4); described oil seal ring (1) is tight against described the second back-up ring (4) under the effect of described spring (2), and described oil sealing protective gear (120) is positioned between described the first back-up ring (3) and described the second back-up ring (4).
3. the oil hydraulic pump with oil sealing protective gear according to claim 2; it is characterized in that wherein said oil seal ring (1) can move along described main shaft (30); depart from described the second back-up ring (4); and can coordinate with described housing (10) cavity that seals described bearing (130) place, make the cavity at described bearing (130) place and the cavity isolation at described swash plate (40), described backhaul plate (50), described ball bowl (60), described plunger piston slippery boots secondary (70), described cylinder body (80) and described thrust plate (90) place.
4. the oil hydraulic pump with oil sealing protective gear according to claim 3, is characterized in that wherein at described oil seal ring (1), near on the surface of described swash plate (40) one sides, being provided with Baltimore groove (5) radially.
5. the oil hydraulic pump with oil sealing protective gear according to claim 4; it is characterized in that wherein at described oil seal ring (1), near on the surface of described swash plate (40) one sides, being provided with four described Baltimore grooves (5), four described Baltimore grooves (5) are equally spaced being distributed on described surface.
6. according to the oil hydraulic pump with oil sealing protective gear described in arbitrary claim in claim 1 to 5, it is characterized in that wherein said oil seal ring (1) has a large end (6) and a small end (7), described small end (7) is positioned on the surface of described large end (6) one sides, and described main shaft (30) is through described small end (7) and described large end (6); One end of described spring (2) is to be tight against described small end (7), and described large end (6) be provided with described small end (7) one sides surface and described small end (7) and described housing (10) between there is gap; When described oil seal ring (1) seals the cavity at described bearing (130) place along described main shaft (30) motion, be that described large end (6) coordinates with described housing (10) to be provided with the surface of described small end (7) one sides, now described small end (7) is positioned at the cavity at described bearing (130) place; The surface of described large end (6) opposite side has gap all the time and between described swash plate (40).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204961.XU CN203962368U (en) | 2014-04-24 | 2014-04-24 | A kind of oil hydraulic pump with oil sealing protective gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420204961.XU CN203962368U (en) | 2014-04-24 | 2014-04-24 | A kind of oil hydraulic pump with oil sealing protective gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203962368U true CN203962368U (en) | 2014-11-26 |
Family
ID=51922962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420204961.XU Expired - Lifetime CN203962368U (en) | 2014-04-24 | 2014-04-24 | A kind of oil hydraulic pump with oil sealing protective gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203962368U (en) |
-
2014
- 2014-04-24 CN CN201420204961.XU patent/CN203962368U/en not_active Expired - Lifetime
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| 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: 20141126 |