CN203201793U - Hydraulic gear pump side plate with improved structure - Google Patents
Hydraulic gear pump side plate with improved structure Download PDFInfo
- Publication number
- CN203201793U CN203201793U CN 201320200312 CN201320200312U CN203201793U CN 203201793 U CN203201793 U CN 203201793U CN 201320200312 CN201320200312 CN 201320200312 CN 201320200312 U CN201320200312 U CN 201320200312U CN 203201793 U CN203201793 U CN 203201793U
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- side plate
- gear pump
- depth
- balance groove
- hydraulic
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Abstract
The utility model discloses a hydraulic gear pump side plate with an improved structure. The side plate (1) is provided with a drive gear side balance groove (2) and a driven gear side balance groove (3). The hydraulic gear pump side plate is characterized in that the depth of the drive gear side balance groove is more than that of the driven gear side balance groove. The hydraulic gear pump side plate has the advantages that because the two balance grooves of the floating side plate are different in depth, the resultant force difference of a drive gear shaft and a driven gear shaft can be effectively reduced, and the functions of balancing a radial force and reducing the upsetting moment of the side plate are achieved. Through improving the structure of the side plate, the service life of a hydraulic gear pump can be prolonged by 15-20 percent.
Description
Technical field
The utility model relates to a kind of component of hydraulic gear pump, and definite saying is a kind of hydraulic gear pump lateral plate that improves structure.
Background technique
At present, according to actual production checking and theory analysis, making a concerted effort of the hydraulic radial power that the driving and driven gear of hydraulic gear pump inside is suffered and engaging force is unequal, and driven gear is greater than driving gear.By the working principle of gear pump as can be known, the driven gear shaft force in radial is greater than the driving gear shaft force in radial.The difference of radial force causes the offset of driven gear shaft greater than the offset of driving gear shaft, and this causes the radial clearance of the radial clearance of driven gear tooth top and the pump housing and driving gear tooth top and the pump housing unequal.Because it mainly is to be determined by end clearance and radial clearance that the gear pump internal pressure distributes, and the end clearance is mainly determined by the physical dimension of gear pump, the end clearance at driving and driven gear place is identical, so the difference of radial clearance causes driving gear different from the field pattern of driven gear internal pressure.Will cause impacting force not overlap with the line of action of reaction thrust, cause floating side plate to produce tilting moment.If the side plate compensating groove is designed to same depth according to symmetry principle, side plate will produce a tilting moment so.Hydraulic gear pump is worked existing under irrational lateral plate structure condition of this tilting moment, can cause the side plate premature wear serious, and the position that serious wear occurs is mainly in the end of balanced radial force groove, causes gear pump greatly to shorten working life.In order to address this problem, inventor of the present utility model has done in earnest research, has proposed goal of the invention of the present utility model.
The model utility content
Goal of the invention of the present utility model is to produce premature wear for the identical tilting moment that causes of groove depth that overcomes above-mentioned compensating groove owing to side plate exists, thereby the deficiency that causes the gear pump life-span greatly to reduce puts forward.A kind of hydraulic gear pump lateral plate that improves structure namely is provided.
Technical solution of the present utility model is to realize like this, this improves the hydraulic gear pump lateral plate of structure, have driving gear lateral balance groove (2) and driven gear lateral balance groove (3) at side plate (1), it is characterized in that the degree of depth of driving gear lateral balance groove is greater than the degree of depth of driven gear lateral balance groove.
Useful technique effect of the present utility model is: the two compensating groove degree of depth of floating side plate are different, can effectively reduce the poor with joint efforts of driving and driven gear shaft because the compensating groove degree of depth is different, play the effect of balance radial force and reduction side plate tilting moment.By improving the structure of side plate, can improve 15-20% the working life of hydraulic gear pump.
Description of drawings
Accompanying drawing 1 is the positive schematic diagram of the working surface of side plate, accompanying drawing 2 be A-A section in the accompanying drawing 1 through postrotational schematic diagram, accompanying drawing 3 is that B-B section in the accompanying drawing 1 is through postrotational schematic diagram.In the accompanying drawings: 1, side plate, 2, driving gear lateral balance groove, 3, driven gear lateral balance groove.
Embodiment
Below in conjunction with the embodiment who provides in the accompanying drawing, structure of the present utility model and use are elaborated.With reference to accompanying drawing, this kind improves the hydraulic gear pump lateral plate of structure, has driving gear lateral balance groove (2) and driven gear lateral balance groove (3) at side plate (1), it is characterized in that the degree of depth of driving gear lateral balance groove is greater than the degree of depth of driven gear lateral balance groove.
Calculate and actual detection validation the dark 0.2-0.8 millimeter of the degree of depth of the depth ratio driven gear lateral balance groove (3) of said driving gear lateral balance groove (2) according to theory.
Further optimize after the above-mentioned data the dark 0.3-0.5 millimeter of the degree of depth of the depth ratio driven gear lateral balance groove (3) of said driving gear lateral balance groove (2).Such depth difference relatively meets radial force and engaging force and because the opposition of rollover moment that hydraulic pressure leakage and other various errors produce of delivery pressure on the side plate of the mekydro of 10-35 MPa.Thereby improved the wear-resisting property of side plate, namely improved the inter deterioration of gear, improved working life and the maintenance period of gear pump, general nominal pressure grade 20 MPas are with interior hydraulic gear pump, and can improve 15-20% working life.
The use of side plate use of the present utility model and original not improved side plate is identical.Do not changing under the integrally-built prerequisite of side plate, only changing just energy active balance radial force of the compensating groove degree of depth, reaching and reduce the side plate tilting moment, reducing the effect of side plate premature wear.
Equally, in the situation that do not change the hydraulic gear pump general structure, only change the side plate compensating groove degree of depth, just can reduce the wearing and tearing of side plate, thereby increase substantially the Acceptable life of hydraulic gear pump.
Claims (3)
1. a hydraulic gear pump lateral plate that improves structure has driving gear lateral balance groove (2) and driven gear lateral balance groove (3) at side plate (1), it is characterized in that the degree of depth of driving gear lateral balance groove is greater than the degree of depth of driven gear lateral balance groove.
2. according to a kind of hydraulic gear pump lateral plate that improves structure claimed in claim 1, it is characterized in that the dark 0.2-0.8 millimeter of the degree of depth of the depth ratio driven gear lateral balance groove (3) of said driving gear lateral balance groove (2).
3. according to claim 1 or 2 described a kind of hydraulic gear pump lateral plates that improve structure, it is characterized in that the dark 0.3-0.5 millimeter of the degree of depth of the depth ratio driven gear lateral balance groove (3) of said driving gear lateral balance groove (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320200312 CN203201793U (en) | 2013-04-19 | 2013-04-19 | Hydraulic gear pump side plate with improved structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320200312 CN203201793U (en) | 2013-04-19 | 2013-04-19 | Hydraulic gear pump side plate with improved structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203201793U true CN203201793U (en) | 2013-09-18 |
Family
ID=49145906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320200312 Expired - Fee Related CN203201793U (en) | 2013-04-19 | 2013-04-19 | Hydraulic gear pump side plate with improved structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203201793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374686A (en) * | 2021-07-12 | 2021-09-10 | 江南大学 | Thrust plate of high-pressure gear pump and design method of compensation oil groove of thrust plate |
-
2013
- 2013-04-19 CN CN 201320200312 patent/CN203201793U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374686A (en) * | 2021-07-12 | 2021-09-10 | 江南大学 | Thrust plate of high-pressure gear pump and design method of compensation oil groove of thrust plate |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130918 Termination date: 20200419 |