CN103807164B - A kind of side plate for reducing gear pump vibration noise - Google Patents
A kind of side plate for reducing gear pump vibration noise Download PDFInfo
- Publication number
- CN103807164B CN103807164B CN201410067557.7A CN201410067557A CN103807164B CN 103807164 B CN103807164 B CN 103807164B CN 201410067557 A CN201410067557 A CN 201410067557A CN 103807164 B CN103807164 B CN 103807164B
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- CN
- China
- Prior art keywords
- side plate
- back side
- damping
- damping slot
- gear
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- 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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Abstract
A kind of side plate for reducing gear pump vibration noise, relate to a kind of Hydraulic power units for vibration and noise reducing, comprise the front side plate and back side panel that are positioned at pump housing internal gear both sides, described front side plate and back side panel and tooth contact region evenly offer damping slot, gear and the pump housing and front and back side plate form between cog cavity volume one by one, and adjacent two between cog cavity volumes are communicated with the form of damping by each damping slot.Damping slot on this side plate eliminates pressure jump when gear pump works, and makes the more steady of gear pump work, reaches the object of vibration and noise reducing.Damping slot is respectively arranged on the side plate of front and back, can increase in fluid and let out path, let out damping in increase, vent flow in suppressing, and ensures volumetric efficiency.
Description
Technical field
The present invention relates to a kind of Hydraulic power units for vibration and noise reducing, specifically a kind of side plate for reducing gear pump vibration noise.
Background technique
Gear pump is after oil suction district completes oil suction, and the cavity volume that fluid is made up of the gear teeth, front and back side plate, the pump housing brings oil-discharging cavity into the rotation of gear.Because the high pressure of oil-discharging cavity and gear teeth tooth top and the pump housing exist gap, pressure is conducted to each between cog cavity volume with the trend of decay by gap by pressure oil.From fluid mechanics slit flow principle, the decay of pressure only in gap (between gear teeth tooth top and the pump housing) produce, and it is constant in the cavity volume internal pressure of wheel between cog, therefore along with the rotation of gear can produce pressure jump in the region whole to oil-discharging cavity by oil sucting cavity, the sudden change of pressure is the aggravation that can cause vibrating, and this is also that gear pump produces one of reason of noise.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of side plate for reducing gear pump vibration noise, this side plate can make gear pump become without pressure jump in the pressure distribution from oil sucting cavity to oil-discharging cavity, effectively improves the working life of gear pump.
The technical solution adopted in the present invention is: a kind of side plate for reducing gear pump vibration noise, comprise the front side plate and back side panel that are positioned at pump housing internal gear both sides, the region of described front side plate and back side panel and tooth contact evenly offers damping slot, gear and the pump housing and front and back side plate form between cog cavity volume one by one, and adjacent two between cog cavity volumes are communicated with the form of damping by each damping slot.
The present invention, the damping slot on described front side plate and back side panel, closest to the groove end of inlet port and oil drain out from the distance of inlet port and at least one gear teeth of oil drain out.
The present invention, the damping slot on described front side plate and back side panel is circumferentially spaced apart, and the radially direct radius of damping slot is between tooth contact district root circle and Outside radius.
The present invention, the interval circumferential lengths at the damping slot circumferential lengths on described front side plate and back side panel and adjacent two damping slots head and the tail two ends is its 1 to 2 gear teeth transverse tooth thickness corresponding to distribution radius.
The present invention, the damping slot on described front side plate and back side panel, its degree of depth and width are 0.3 ~ 0.5mm.
The invention has the beneficial effects as follows:
Damping slot on this side plate eliminates pressure jump when gear pump works, and makes the more steady of gear pump work, reaches the object of vibration and noise reducing.Damping slot is respectively arranged on the side plate of front and back, can increase in fluid and let out path, let out damping in increase, vent flow in suppressing, and ensures volumetric efficiency.
Accompanying drawing explanation
Fig. 1 is the structural representation of gear pump.
Fig. 2 is the structural representation of front side plate.
Fig. 3 is the structural representation of back side panel.
Fig. 4 is the pressure-plotting of gear pump from oil sucting cavity to oil-discharging cavity.
Mark in figure: 1, input shaft, 2, the pump housing, 3, front side plate, 4, driving gear, 5, back side panel, 6, damping slot, 7, inlet port, 8, oil drain out, 9, pressure distribution curve.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
As shown in the figure, a kind of side plate for reducing gear pump vibration noise, comprise the front side plate 3 and back side panel 5 that are positioned at the pump housing 2 internal gear both sides, described front side plate 3 and back side panel 5 evenly offer damping slot 6 with the region of tooth contact, such as, in side plate and driving gear 4, the contact area of the gear teeth, gear and the pump housing form between cog cavity volume one by one, and adjacent two between cog cavity volumes are communicated with the form of damping by each damping slot 6.
Driving gear 4 as described above is connected with input shaft 1.
The present invention, optimizes this programme further, the damping slot 6 on described front side plate 3 and back side panel 5, closest to the groove end of inlet port 7 and oil drain out 8 from the distance of inlet port 7 and at least one gear teeth of oil drain out 8.
The present invention, optimizes this programme further, and the damping slot 6 on described front side plate and back side panel is circumferentially spaced apart, and the radially direct radius of damping slot is between tooth contact district root circle and Outside radius.
The present invention, optimizes this programme further, and the interval circumferential lengths at damping slot 6 circumferential lengths on described front side plate and back side panel and adjacent two damping slots head and the tail two ends is its 1 to 2 gear teeth transverse tooth thickness corresponding to distribution radius.
The present invention, optimizes this programme further, and the damping slot 6 on described front side plate and back side panel, its degree of depth and width are 0.3 ~ 0.5mm.
The present invention, each between cog cavity volume is communicated with in the mode of damping by damping slot, the slow release of pressure when pressure jump, thus balances each between cog cavity volume oil pressure, to have " step " pressure distribution curve 9 become smooth, thus effectively reduce pressure pulsation.
Claims (2)
1. the side plate for reducing gear pump vibration noise, comprise the front side plate (3) and back side panel (5) that are positioned at the pump housing (2) internal gear both sides, it is characterized in that: described front side plate (3) and back side panel (5) evenly offer damping slot (6) with the region of tooth contact, gear and the pump housing and front and back side plate form between cog cavity volume one by one, and adjacent two between cog cavity volumes are communicated with the form of damping by each damping slot (6);
Damping slot (6) on described front side plate and back side panel, closest to the groove end of inlet port and oil drain out from the distance of inlet port and at least one gear teeth of oil drain out;
Damping slot (6) on described front side plate and back side panel is circumferentially spaced apart, and the radially direct radius of damping slot is between tooth contact district root circle and Outside radius;
The interval circumferential lengths at damping slot (6) circumferential lengths on described front side plate and back side panel and adjacent two damping slots head and the tail two ends is its 1 to 2 gear teeth transverse tooth thickness corresponding to distribution radius.
2. a kind of side plate for reducing gear pump vibration noise according to claim 1, is characterized in that: the damping slot (6) on described front side plate and back side panel, its degree of depth and width are 0.3-0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067557.7A CN103807164B (en) | 2014-02-27 | 2014-02-27 | A kind of side plate for reducing gear pump vibration noise |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410067557.7A CN103807164B (en) | 2014-02-27 | 2014-02-27 | A kind of side plate for reducing gear pump vibration noise |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103807164A CN103807164A (en) | 2014-05-21 |
| CN103807164B true CN103807164B (en) | 2015-12-16 |
Family
ID=50704432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410067557.7A Expired - Fee Related CN103807164B (en) | 2014-02-27 | 2014-02-27 | A kind of side plate for reducing gear pump vibration noise |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103807164B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2809592A (en) * | 1954-01-13 | 1957-10-15 | Cessna Aircraft Co | Rotary pump or motor |
| US2853952A (en) * | 1955-11-03 | 1958-09-30 | Thompson Prod Inc | Gear ring bushing |
| US3057303A (en) * | 1959-04-15 | 1962-10-09 | Clark Equipment Co | Pressure loaded gear pump |
| US3137238A (en) * | 1961-12-11 | 1964-06-16 | Clark Equipment Co | Pump or motor |
| CA950267A (en) * | 1970-11-12 | 1974-07-02 | Commercial Shearing And Stamping Company | Rotary pumps and motors |
| DE4124466A1 (en) * | 1991-07-24 | 1993-01-28 | Bosch Gmbh Robert | Gear pump or engine - has wearing plates with small grooves, facing bearing bodies, for gap-free contact |
| CN203702549U (en) * | 2014-02-27 | 2014-07-09 | 洛阳理工学院 | Side plate for reducing vibration and noises of gear pump |
-
2014
- 2014-02-27 CN CN201410067557.7A patent/CN103807164B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2809592A (en) * | 1954-01-13 | 1957-10-15 | Cessna Aircraft Co | Rotary pump or motor |
| US2853952A (en) * | 1955-11-03 | 1958-09-30 | Thompson Prod Inc | Gear ring bushing |
| US3057303A (en) * | 1959-04-15 | 1962-10-09 | Clark Equipment Co | Pressure loaded gear pump |
| US3137238A (en) * | 1961-12-11 | 1964-06-16 | Clark Equipment Co | Pump or motor |
| CA950267A (en) * | 1970-11-12 | 1974-07-02 | Commercial Shearing And Stamping Company | Rotary pumps and motors |
| DE4124466A1 (en) * | 1991-07-24 | 1993-01-28 | Bosch Gmbh Robert | Gear pump or engine - has wearing plates with small grooves, facing bearing bodies, for gap-free contact |
| CN203702549U (en) * | 2014-02-27 | 2014-07-09 | 洛阳理工学院 | Side plate for reducing vibration and noises of gear pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103807164A (en) | 2014-05-21 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20170227 |