CN104265625A - Noise-reduction oil pump gear assembly - Google Patents
Noise-reduction oil pump gear assembly Download PDFInfo
- Publication number
- CN104265625A CN104265625A CN201410480382.2A CN201410480382A CN104265625A CN 104265625 A CN104265625 A CN 104265625A CN 201410480382 A CN201410480382 A CN 201410480382A CN 104265625 A CN104265625 A CN 104265625A
- Authority
- CN
- China
- Prior art keywords
- gear
- noise
- oil
- oil pump
- pump
- 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.)
- Pending
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/12—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C2/14—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C2/18—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with similar tooth forms
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rotary Pumps (AREA)
Abstract
The invention relates to the technical field of mechanical gears, and in particular relates to a noise-reduction oil pump gear assembly. The noise-reduction oil pump gear assembly comprises a pump body, a driving gear, a driven gear and gear shafts, wherein the driving gear and the driven gear are respectively fixed in the pump body through the two gear shafts and are meshed with each other; an oil pressing opening and an oil sucking opening are respectively formed in positions, which correspond to the driving gear and the driven gear, on two side surfaces of the pump body; grooves are formed in contact surfaces of the gear shafts and the driving and driven gears; sound absorption cotton is arranged in the grooves; 3-12 shock absorption slots are formed in the surfaces, which are close to the driving gear and the driven gear, in the pump body. According to the noise-reduction oil pump gear assembly, the oil pressing opening and the oil sucking opening are formed in the meshed positions of the gears, so that the abrasion is reduced when the gears at the oil pressing opening and the oil sucking opening are meshed, and the noise is reduced; shock absorption and sound insulation notches are formed in the inner surfaces of the gear shafts and the pump body, so that mechanical noise can be further effectively alleviated, abrasion to elements is reduced, and the service life of the gears of an oil pump is prolonged.
Description
Technical field
The present invention relates to mechanical gear technical field, especially a kind of noise abatement oil pump gear assembly.
Background technique
Gear pump is the critical component being used for carrying flowing medium in machinery hydraulic system, and it relies on the high speed rotary motion fed sheet of a media of a pair oil pump gear.When high speed engagement driving made by a pair oil pump gear in the pump housing, along with contact points change, in meshing zone, oil sucting cavity swept volume increases, and the pressure in space reduces and produces parital vacuum, oil in oil sump enters the inlet port in oil pump low pressure area under atmospheric pressure, produces oil suction effect; In pumping cavity, because the oil pump gear teeth progress into engagement, its swept volume reduces, and produces force feed effect to pressure piping.In prior art, the gear shaft of oil pump gear is cylindric, and oil pump gear comprises gear and gear shaft, and gear shaft is cylindric, and both sides adjacent with gear on gear shaft can running in bearings.Oil pump gear is the operation element of gear pump most critical, by gears meshing effect, and the certain pressure needed for gear pump could export and the medium of flow.Because oil pump gear requires different from general mechanical drive gear job specification, oil pump gear engagement time its sideshake and bottom clearance all very little, the pressure medium exported is higher again, its interact suffered by load very large, deflection deformation that gear shaft produces during work, pressure medium is higher, is out of shape larger.Because distortion causes gear shaft and bearing supporting place mated condition to worsen, impel gear pump component abrasion to aggravate, produce abnormal sound, dielectric leakage, pressure drop, utilization efficiency reduces, and shortens operating life.The simultaneously continuous rotation of gear, what the alternating stress of generation can continue acts on gear shaft, and long-term work can make material produce tired and cause axle journal to rupture to cause gear pump to be scrapped.
Summary of the invention
In order to overcome the deficiency of existing technology, the invention provides a kind of noise abatement oil pump gear assembly.
The technical solution adopted for the present invention to solve the technical problems is: a kind of noise abatement oil pump gear assembly, comprise the pump housing, driving gear, driven gear, gear shaft, driving gear, driven gear is fixed with respectively by two gear shafts in the pump housing, driving gear, driven gear are meshed, described pump housing bi-side, correspond to driving gear, driven gear engagement place is respectively equipped with force feed mouth and inlet port, described gear shaft and driving gear, driven gear surface of contact are provided with groove, are provided with acoustical cotton in groove.
According to another embodiment of the invention, comprise further, surface close with driving gear, driven gear in the described pump housing respectively has 3 ~ 12 damping troughs.
The invention has the beneficial effects as follows, force feed mouth and inlet port are located at gears meshing place by the present invention, and can make weares and teares during both gears meshing reduces, and reduces noise; Establish damping to subtract sound notch at gear shaft and pump housing internal surface, can help effectively to solve mechanical noise further, alleviate the wearing and tearing of element, extend oil pump gear operating life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is structural representation of the present invention.
In figure 1, the pump housing, 2, driving gear, 3, driven gear, 4, gear shaft, 5, force feed mouth, 6, inlet port, 7, groove, 8, acoustical cotton, 9, damping trough.
Embodiment
If Fig. 1 is structural representation of the present invention, a kind of noise abatement oil pump gear assembly, comprise the pump housing 1, driving gear 2, driven gear 3, gear shaft 4, driving gear 2, driven gear 3 is fixed with respectively by two gear shafts 4 in the pump housing 1, driving gear 2, driven gear 3 are meshed, the described pump housing 1 bi-side, correspond to driving gear 2, driven gear 3 engagement place is respectively equipped with force feed mouth 5 and inlet port 6.Force feed mouth 5 and the just right engagement place of inlet port 6, can make the engagement place that the oily direct invasion Mechanical Contact of immersion is maximum, reduces its friction, reduce operating noise.Described gear shaft 4 is provided with groove 7 with driving gear 2, driven gear 3 surface of contact, is provided with acoustical cotton 8 in groove 7, Absorbable rod part mechanicalness noise.
Surface close with driving gear 2, driven gear 3 in the pump housing 1 respectively has 3 ~ 12 damping troughs 9, notch size and determining.The noise that the mechanical friction of this notch available buffer causes.
Force feed mouth and inlet port are located at gears meshing place by the present invention, and can make weares and teares during both gears meshing reduces, and reduces noise; Establish damping to subtract sound notch at gear shaft and pump housing internal surface, can help effectively to solve mechanical noise further, alleviate the wearing and tearing of element, extend oil pump gear operating life.
Claims (2)
1. a noise abatement oil pump gear assembly, comprise the pump housing (1), driving gear (2), driven gear (3), gear shaft (4), driving gear (2) is fixed with respectively by two gear shafts (4) in the pump housing (1), driven gear (3), driving gear (2), driven gear (3) is meshed, it is characterized in that, the described pump housing (1) bi-side, correspond to driving gear (2), driven gear (3) engagement place is respectively equipped with force feed mouth (5) and inlet port (6), described gear shaft (4) and driving gear (2), driven gear (3) surface of contact is provided with groove (7), acoustical cotton (8) is provided with in groove (7).
2. noise abatement oil pump gear assembly according to claim 1, is characterized in that, surface close with driving gear (2), driven gear (3) in the described pump housing (1) respectively has 3 ~ 12 damping troughs (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410480382.2A CN104265625A (en) | 2014-09-19 | 2014-09-19 | Noise-reduction oil pump gear assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410480382.2A CN104265625A (en) | 2014-09-19 | 2014-09-19 | Noise-reduction oil pump gear assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104265625A true CN104265625A (en) | 2015-01-07 |
Family
ID=52157181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410480382.2A Pending CN104265625A (en) | 2014-09-19 | 2014-09-19 | Noise-reduction oil pump gear assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104265625A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293453A (en) * | 1994-04-28 | 1995-11-07 | Sankyo Seiki Mfg Co Ltd | Gear pump |
| CN102141036A (en) * | 2011-04-13 | 2011-08-03 | 徐州科源液压有限公司 | High-pressure gear pump with rectangular oil inlet |
| CN103352845A (en) * | 2013-06-19 | 2013-10-16 | 合肥川源液压设备有限公司 | High-flow low-noise oil pump |
| CN103912669A (en) * | 2014-04-28 | 2014-07-09 | 苏州锻压厂有限责任公司 | Low-noise gear box |
| CN204126885U (en) * | 2014-09-19 | 2015-01-28 | 常州市武进金城齿轮有限公司 | Noise abatement oil pump gear assembly |
-
2014
- 2014-09-19 CN CN201410480382.2A patent/CN104265625A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293453A (en) * | 1994-04-28 | 1995-11-07 | Sankyo Seiki Mfg Co Ltd | Gear pump |
| CN102141036A (en) * | 2011-04-13 | 2011-08-03 | 徐州科源液压有限公司 | High-pressure gear pump with rectangular oil inlet |
| CN103352845A (en) * | 2013-06-19 | 2013-10-16 | 合肥川源液压设备有限公司 | High-flow low-noise oil pump |
| CN103912669A (en) * | 2014-04-28 | 2014-07-09 | 苏州锻压厂有限责任公司 | Low-noise gear box |
| CN204126885U (en) * | 2014-09-19 | 2015-01-28 | 常州市武进金城齿轮有限公司 | Noise abatement oil pump gear assembly |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150107 |