CN105422433A - Four-groove valve plate of hydrostatic transmission device - Google Patents
Four-groove valve plate of hydrostatic transmission device Download PDFInfo
- Publication number
- CN105422433A CN105422433A CN201510982090.3A CN201510982090A CN105422433A CN 105422433 A CN105422433 A CN 105422433A CN 201510982090 A CN201510982090 A CN 201510982090A CN 105422433 A CN105422433 A CN 105422433A
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- CN
- China
- Prior art keywords
- cavity
- oil sucting
- cavities
- pumping
- oil
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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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/001—Noise damping
Abstract
The invention relates to a valve plate, in particular to a four-groove valve plate of a hydrostatic transmission device, and belongs to the technical field of valve plates. The four-groove valve plate comprises a valve plate body, wherein waisted oil absorption cavities and pressure oil cavities are formed in the valve plate body; transition regions between the oil absorption cavities and the pressure oil cavities are closed regions; the oil absorption cavities include a first oil absorption cavity and two second oil absorption cavities distributed on two sides of the first oil absorption cavity; oil absorption cavity triangular grooves are formed in the ends, facing the closed regions, of the second oil absorption cavities; the pressure oil cavities include a first pressure oil cavity and two second pressure oil cavities distributed on two sides of the first pressure oil cavity; and pressure oil cavity triangular grooves are formed in the ends, facing the closed regions, of the second pressure oil cavities. The four-groove valve plate is simple, compact and reasonable in structure, can reduce a force unbalance phenomenon occurring between the valve plate of the hydrostatic transmission device and a cylinder body, and reduces vibration and noise caused by flowing of hydraulic oil.
Description
Technical field
The present invention relates to a kind of thrust plate, a kind of four groove thrust plates of hydrostatic transmission, belong to thrust plate technical field specifically.
Background technique
Along with the development of National agricultural machinery, increasing agricultural machinery uses hydraulic system, and hydrostatic transmission is the hydraulic product of a kind of main flow for the running gear of agricultural machinery.Hydrostatic transmission is pump and motor integrated products, and the variable moment required when hydrostatic transmission is in maximum pump discharge, loading is very large.Thrust plate belongs to core part in hydrostatic transmission, and it provides oil-distribution port for running up.Thrust plate and cylinder body are a pair important friction pairs in device, the normal operation of the direct influential system of its runnability.
The triangular groove that existing thrust plate is offered is mainly used in reducing noise and vibration.When two triangular grooves offered by thrust plate, occur that meta is unstable, cylinder body is when high-speed motion, and between thrust plate and cylinder body, motion produces unbalanced force, and show as and shake when car starts, handle does not surely live, and moves to huge discharge direction.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, thus a kind of hydrostatic transmission four groove thrust plate is provided, the generation occurring stressed energy imbalance between thrust plate and cylinder body can be reduced, reduce the vibration and noise that running of hydraulic power oil produces.
According to technological scheme provided by the invention, four groove thrust plates of hydrostatic transmission comprise flow disk body, it is characterized in that: flow disk body is provided with oil sucting cavity and the pumping cavity of kidney-shaped, and the transition region between oil sucting cavity and pumping cavity is choke-out region; Oil sucting cavity comprises the first oil sucting cavity and is distributed in two the second oil sucting cavities of the first oil sucting cavity both sides, and the first oil sucting cavity and two the second oil sucting cavities are distributed in circumferentially same; Described second oil sucting cavity is provided with oil sucting cavity triangular groove towards one end, choke-out region, and the width dimensions of oil sucting cavity triangular groove diminishes near the second oil sucting cavity gradually to away from the second oil sucting cavity direction; Pumping cavity comprises the first pumping cavity and is distributed in two the second pumping cavities of the second pumping cavity both sides, and the first pumping cavity and two the second pumping cavities are distributed in circumferentially same; Described second pumping cavity is provided with pumping cavity triangular groove towards one end, choke-out region, and the width dimensions of pumping cavity triangular groove diminishes near the second pumping cavity gradually to away from the second pumping cavity direction.
Further, flow disk body is circular.
Further, oil sucting cavity and pumping cavity are symmetrical up and down.
Further, the first oil sucting cavity and the second oil sucting cavity are kidney-shaped structure.
Further, the first pumping cavity and the second pumping cavity are kidney-shaped structure.
Further, the two ends up and down of flow disk body are provided with the positioning lug of protrusion, and positioning lug is provided with positioning hole.
Further, the symmetrical distribution of two the second oil sucting cavities.
Further, the symmetrical distribution of two the second pumping cavities.
Compared with the prior art the present invention has the following advantages:
Structure of the present invention is simple, compact, reasonable, can reduce the generation occurring stressed energy imbalance between the thrust plate of hydrostatic transmission and cylinder body, reduces the vibration and noise that running of hydraulic power oil produces.
Accompanying drawing explanation
Fig. 1 is plan view of the present invention.
Description of reference numerals: 1-flow disk body, 2-positioning lug, 3-positioning hole, 4-first oil sucting cavity, 5-second oil sucting cavity, 6-oil sucting cavity triangular groove, 7-first pumping cavity, 8-second pumping cavity, 9-pumping cavity triangular groove, 10-choke-out region.
Embodiment
Embodiment in is by reference to the accompanying drawings further described by the present invention below:
As shown in Figure 1, the present invention mainly comprises circular flow disk body 1, and flow disk body 1 is provided with oil sucting cavity and the pumping cavity of kidney-shaped, and oil sucting cavity and pumping cavity are symmetrical up and down, and oil sucting cavity and pumping cavity operationally act on can be changed mutually.Transition region between oil sucting cavity and pumping cavity is choke-out region 10.
Oil sucting cavity comprises the first oil sucting cavity 4 and is distributed in the symmetrical distribution of two the second oil sucting cavity 5, two the second oil sucting cavities 5 of the first oil sucting cavity 4 both sides.First oil sucting cavity 4 and two the second oil sucting cavities 5 are distributed in circumferentially same.First oil sucting cavity 4 and the second oil sucting cavity 5 are kidney-shaped structure.
Described second oil sucting cavity 5 is provided with oil sucting cavity triangular groove 6 towards one end, choke-out region 10, and the width dimensions of oil sucting cavity triangular groove 6 diminishes near the second oil sucting cavity 5 gradually to away from the second oil sucting cavity 5 direction.Oil sucting cavity triangular groove 6 makes to increase pre-loading and pre-decompression time between high pressure and low pressure, increases leakage rate, reduces cylinder body pressure reduction before and after choke-out region, makes cylinder body stress balance, reduces unbalance moment.
Pumping cavity comprises the first pumping cavity 7 and is distributed in the symmetrical distribution of two the second pumping cavity 8, two the second pumping cavities 8 of the second pumping cavity 8 both sides.First pumping cavity 7 and two the second pumping cavities 8 are distributed in circumferentially same.First pumping cavity 7 and the second pumping cavity 8 are kidney-shaped structure.
Described second pumping cavity 8 is provided with pumping cavity triangular groove 9 towards one end, choke-out region 10, and the width dimensions of pumping cavity triangular groove 9 diminishes near the second pumping cavity 8 gradually to away from the second pumping cavity 8 direction.Pumping cavity triangular groove 9 makes to increase pre-loading and pre-decompression time between high pressure and low pressure, increases leakage rate, reduces cylinder body pressure reduction before and after choke-out region, makes cylinder body stress balance, reduces unbalance moment.
The two ends up and down of described flow disk body 1 are provided with the positioning lug 2 of protrusion, and positioning lug 2 is provided with positioning hole 3, are realized the location and installation of flow disk body 1 by positioning hole 3.
Working principle of the present invention is: in use, and when cylinder bore enters oil suction and force feed intersection, triangular groove makes high pressure oil inside cylinder body have the connection of short time, and balance cylinder block is in the pressure difference through choke-out region.Thus the generation occurring stressed energy imbalance between thrust plate and cylinder body can be reduced, reduce the vibration and noise that running of hydraulic power oil produces.
Claims (8)
1. four groove thrust plates of hydrostatic transmission, comprise flow disk body (1), it is characterized in that: flow disk body (1) is provided with oil sucting cavity and the pumping cavity of kidney-shaped, and the transition region between oil sucting cavity and pumping cavity is choke-out region (10); Oil sucting cavity comprises the first oil sucting cavity (4) and is distributed in two the second oil sucting cavities (5) of the first oil sucting cavity (4) both sides, and the first oil sucting cavity (4) and two the second oil sucting cavities (5) are distributed in circumferentially same; Described second oil sucting cavity (5) is provided with oil sucting cavity triangular groove (6) towards choke-out region (10) one end, and the width dimensions of oil sucting cavity triangular groove (6) diminishes near the second oil sucting cavity (5) gradually to away from the second oil sucting cavity (5) direction; Pumping cavity comprises the first pumping cavity (7) and is distributed in two the second pumping cavities (8) of the second pumping cavity (8) both sides, and the first pumping cavity (7) and two the second pumping cavities (8) are distributed in circumferentially same; Described second pumping cavity (8) is provided with pumping cavity triangular groove (9) towards choke-out region (10) one end, and the width dimensions of pumping cavity triangular groove (9) diminishes near the second pumping cavity (8) gradually to away from the second pumping cavity (8) direction.
2. four groove thrust plates of hydrostatic transmission as claimed in claim 1, is characterized in that: described flow disk body (1) is for circular.
3. four groove thrust plates of hydrostatic transmission as claimed in claim 1, is characterized in that: described oil sucting cavity and pumping cavity are symmetrical up and down.
4. four groove thrust plates of hydrostatic transmission as claimed in claim 1, is characterized in that: described first oil sucting cavity (4) and the second oil sucting cavity (5) are kidney-shaped structure.
5. four groove thrust plates of hydrostatic transmission as claimed in claim 1, is characterized in that: described first pumping cavity (7) and the second pumping cavity (8) are kidney-shaped structure.
6. four groove thrust plates of hydrostatic transmission as claimed in claim 1, is characterized in that: the two ends up and down of described flow disk body (1) are provided with the positioning lug (2) of protrusion, and positioning lug (2) is provided with positioning hole (3).
7. four groove thrust plates of hydrostatic transmission as claimed in claim 1, is characterized in that: the symmetrical distribution of described two the second oil sucting cavities (5).
8. four groove thrust plates of hydrostatic transmission as claimed in claim 1, is characterized in that: the symmetrical distribution of described two the second pumping cavities (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510982090.3A CN105422433A (en) | 2015-12-23 | 2015-12-23 | Four-groove valve plate of hydrostatic transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510982090.3A CN105422433A (en) | 2015-12-23 | 2015-12-23 | Four-groove valve plate of hydrostatic transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105422433A true CN105422433A (en) | 2016-03-23 |
Family
ID=55500893
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510982090.3A Pending CN105422433A (en) | 2015-12-23 | 2015-12-23 | Four-groove valve plate of hydrostatic transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105422433A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3547900B2 (en) * | 1996-03-22 | 2004-07-28 | 日立建機株式会社 | Axial piston type hydraulic pump |
| CN201080901Y (en) * | 2007-07-30 | 2008-07-02 | 邵阳维克液压有限责任公司 | Axial plunger pump oil distributing disc |
| CN102155372A (en) * | 2011-04-11 | 2011-08-17 | 浙江大学 | Low-noise axial plunger pump based on average pressure |
| CN202360377U (en) * | 2011-11-28 | 2012-08-01 | 佛山市科达液压机械有限公司 | Assembling structure of valve plate and cylinder of hydraulic pump |
| CN103486016A (en) * | 2013-09-16 | 2014-01-01 | 同济大学 | Valve plate for low-noise anti-cavitation plunger pump |
| CN103939330A (en) * | 2014-04-29 | 2014-07-23 | 同济大学 | Damping noise reduction valve plate for plunger hydraulic pump |
| CN205349688U (en) * | 2015-12-23 | 2016-06-29 | 无锡威孚精密机械制造有限责任公司 | Hydrostatic transmission's four groove valve plates |
-
2015
- 2015-12-23 CN CN201510982090.3A patent/CN105422433A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3547900B2 (en) * | 1996-03-22 | 2004-07-28 | 日立建機株式会社 | Axial piston type hydraulic pump |
| CN201080901Y (en) * | 2007-07-30 | 2008-07-02 | 邵阳维克液压有限责任公司 | Axial plunger pump oil distributing disc |
| CN102155372A (en) * | 2011-04-11 | 2011-08-17 | 浙江大学 | Low-noise axial plunger pump based on average pressure |
| CN202360377U (en) * | 2011-11-28 | 2012-08-01 | 佛山市科达液压机械有限公司 | Assembling structure of valve plate and cylinder of hydraulic pump |
| CN103486016A (en) * | 2013-09-16 | 2014-01-01 | 同济大学 | Valve plate for low-noise anti-cavitation plunger pump |
| CN103939330A (en) * | 2014-04-29 | 2014-07-23 | 同济大学 | Damping noise reduction valve plate for plunger hydraulic pump |
| CN205349688U (en) * | 2015-12-23 | 2016-06-29 | 无锡威孚精密机械制造有限责任公司 | Hydrostatic transmission's four groove valve plates |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160323 |