CN207701305U - The return plate of diacytic type axial plunger pump - Google Patents
The return plate of diacytic type axial plunger pump Download PDFInfo
- Publication number
- CN207701305U CN207701305U CN201721920107.3U CN201721920107U CN207701305U CN 207701305 U CN207701305 U CN 207701305U CN 201721920107 U CN201721920107 U CN 201721920107U CN 207701305 U CN207701305 U CN 207701305U
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- CN
- China
- Prior art keywords
- crawler shoe
- ontology
- return plate
- notch
- mounting hole
- 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.)
- Expired - Fee Related
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- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model provides a kind of return plate of diacytic type axial plunger pump, belongs to field of mechanical technique.It solves the problems, such as that existing return plate causes pump radial dimension larger.The return plate of this diacytic type axial plunger pump includes in circular ontology, ontology is equipped with crawler shoe mounting hole, crawler shoe mounting hole has multiple and circumferential directions along ontology uniformly distributed, ontology axially penetrates through the notch for offering and being passed through for crawler shoe neck along the ontology, hole number is identical and face, each crawler shoe mounting hole are connected to by corresponding notch with the endoporus of ontology one by one for position for notch and crawler shoe installation.The return plate of this diacytic type axial plunger pump has the advantages that pump radial dimension can be reduced.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of return plate, especially a kind of diacytic type axial plunger pump
Return plate.
Background technology
Diacytic type axial plunger pump generally has a plunger return mechanism, and effect is plunger in oil-absorbing process from plunger
It carries and stretching in chamber, complete oil suction work, and ensure that crawler shoe has good be bonded with swash plate.
Fig. 1 is a kind of current primary structure of typical diacytic type axial plunger pump, including oil distribution casing 7, cylinder body 6, plunger
5, the spare parts such as crawler shoe 2, baffle ring 4, return plate 3, swash plate 1, transmission shaft 8.The head of plunger 5 is equipped with crawler shoe 2, and 2 face of crawler shoe is begun
Eventually close to 1 plane motion of swash plate, 2 back side of crawler shoe is attached on return plate 3.When cylinder body 6 drives plunger 5 to rotate, since swash plate 1 is flat
There are an inclination angle γ with oil plane for face opposing cylinder 6, and plunger 5 is forced to make straight reciprocating motion in 5 intracavitary of plunger of cylinder body 6.
If cylinder body 6 rotates in the directions n as shown in Figure 2, within the scope of 0 °~180 °, plunger 5 is continuous by bottom dead centre (corresponding 180 ° of positions)
It stretches out, plunger cavity volume constantly increases, until top dead-centre (corresponding 0 ° of position) is only.During this, plunger cavity just with oil
The oil suction window 7a of disk 7 is communicated, and fluid is inhaled into plunger cavity, this is oil-absorbing process.As cylinder body 6 continues to rotate, 180 °~
Within the scope of 360 °, plunger 5 constantly enters intracavitary under the constraint of swash plate 1 by top dead-centre, and plunger cavity volume constantly reduces, until
Bottom dead centre stops.During this, plunger cavity is just communicated with the oil extraction window 7b of oil distribution casing 7, and fluid is discharged by oil extraction window 7b, this
It is oil extraction process.If cylinder body 6 constantly rotates, just continuously oil suction and oil extraction is pumped.
Typical plunger sliding shoe structure and backhaul dish structure difference are as shown in Figure 3 and Figure 4, and 2 neck of crawler shoe is from return plate 3
It is passed through in crawler shoe mounting hole, 2 back side of crawler shoe is made to be bonded with return plate 3, therefore crawler shoe installation bore dia D has to be larger than plunger 5 directly
Diameter d1.To ensure that crawler shoe 2 will not be deviate from from the crawler shoe mounting hole of return plate 3,2 diameter d3 of crawler shoe has to be larger than D.And d3 is limited
Justify in 5 pore size distribution of plunger of cylinder body 6, to increase d3, then the plunger pore size distribution circle of cylinder body 6 must increase, but can cause to pump in this way
Volume increase.Therefore, 3 structure of existing return plate is unfavorable for reducing the radial dimension of pump.
Utility model content
The purpose of this utility model is the presence of the above problem in view of the prior art, it is proposed that a kind of diacytic type axial plunger
The technical issues of return plate of pump, solution is the radial dimension for how reducing pump and the functional reliability for improving crawler shoe.
The purpose of this utility model can be realized by following technical proposal：The return plate of diacytic type axial plunger pump, packet
Include in circular ontology, the ontology is equipped with crawler shoe mounting hole, crawler shoe mounting hole have it is multiple and along ontology it is circumferential
Cloth, which is characterized in that along the notch for offering and being passed through for crawler shoe neck that axially penetrates through of the ontology, described lacks the ontology
Mouthful and crawler shoe installation hole number is identical and position face one by one, it is each described in crawler shoe mounting hole by corresponding notch with it is upper
The endoporus for the ontology stated is connected to.
Each crawler shoe mounting hole is connected to by notch with the endoporus of ontology, and when in use, crawler shoe neck passes through notch
Ontology is slid into, in actual design, can reduce the diameter of crawler shoe mounting hole in this way and it is made to be less than diameter of plunger, to subtract
The radial dimension of small plunger pump；Meanwhile in the case of diameter of plunger and constant crawler shoe diameter, reduce the crawler shoe installation of return plate
Bore dia can increase the contact area of the crawler shoe back side and return plate, to make crawler shoe be not likely to produce eccentric wear, improve crawler shoe
Functional reliability.
In the return plate of above-mentioned diacytic type axial plunger pump, above-mentioned notch is rectangular, and notch is by position face
Two side composition.
In the return plate of above-mentioned diacytic type axial plunger pump, the two side walls of notch are plane.
In the return plate of above-mentioned diacytic type axial plunger pump, the crawler shoe mounting hole is rounded, and the two of notch
Vertical range between a side wall is less than the aperture of crawler shoe mounting hole.
Compared with prior art, the return plate of this diacytic type axial plunger pump has the following advantages：
1, each crawler shoe mounting hole is connected to by notch with the endoporus of ontology, and when in use, and crawler shoe neck is by lacking
Mouth slides into ontology, in actual design, can reduce the diameter of crawler shoe mounting hole in this way and it is made to be less than diameter of plunger, to
Reduce the radial dimension of plunger pump.
2, in the case of diameter of plunger and constant crawler shoe diameter, reducing the crawler shoe installation bore dia of return plate can increase
The contact area at the crawler shoe back side and return plate improves the functional reliability of crawler shoe to make crawler shoe be not likely to produce eccentric wear.
Description of the drawings
Fig. 1 is the structural schematic diagram of existing diacytic type axial plunger pump.
Fig. 2 is the structural schematic diagram of oil distribution casing.
Fig. 3 is existing plunger sliding shoe structure.
Fig. 4 is existing backhaul dish structure.
Fig. 5 is the dimensional structure diagram of this return plate.
Fig. 6 is the overlooking structure diagram of this return plate.
In figure, 1, swash plate；2, crawler shoe；3, return plate；4, baffle ring；5, plunger；6, cylinder body；7, oil distribution casing；7a, oil suction window；
7b, oil extraction window；8, transmission shaft；9, ontology；9a, crawler shoe mounting hole；9b, notch.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 5 and Figure 6, the return plate of this diacytic type axial plunger pump includes in circular ontology 9, on ontology 9
There is multiple and circumferential directions along ontology 9 equipped with the crawler shoe mounting hole 9a for axially penetrating through setting along ontology 9, crawler shoe mounting hole 9a
Cloth.In the present embodiment, crawler shoe mounting hole 9a has 9 and rounded.
Ontology 9 axially penetrates through the notch 9b for offering and being passed through for 1 neck of crawler shoe, the i.e. bore of notch 9b along the ontology 9
More than the diameter of 1 neck of crawler shoe.Notch 9b is identical with crawler shoe mounting hole 9a quantity and position face one by one, each crawler shoe mounting hole
9a is connected to by corresponding notch 9b with the endoporus of ontology 9.It further illustrates, notch 9b is rectangular, and notch 9b is by position
The two side of face forms.The two side walls of notch 9b are plane, and the vertical range between the two side walls of notch 9b is small
In the aperture of crawler shoe mounting hole 9a.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Claims (4)
1. the return plate of diacytic type axial plunger pump includes in circular ontology (9), the ontology (9) is equipped with crawler shoe
Mounting hole (9a), crawler shoe mounting hole (9a) have multiple and uniformly distributed along the circumferential direction of ontology (9), which is characterized in that the ontology (9)
Along the notch (9b) for offering and being passed through for crawler shoe (2) neck that axially penetrates through of the ontology (9), the notch (9b) and crawler shoe peace
Fill that hole (9a) quantity is identical and position face one by one, each crawler shoe mounting hole (9a) by corresponding notch (9b) with
The endoporus of above-mentioned ontology (9) is connected to.
2. the return plate of diacytic type axial plunger pump according to claim 1, which is characterized in that above-mentioned notch (9b) is in
Rectangle, and notch (9b) is made of the two side of position face.
3. the return plate of diacytic type axial plunger pump according to claim 2, which is characterized in that two sides of notch (9b)
Wall is plane.
4. the return plate of diacytic type axial plunger pump according to claim 3, which is characterized in that the crawler shoe mounting hole
(9a) is rounded, and the vertical range between the two side walls of notch (9b) is less than the aperture of crawler shoe mounting hole (9a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721920107.3U CN207701305U (en) | 2017-12-29 | 2017-12-29 | The return plate of diacytic type axial plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721920107.3U CN207701305U (en) | 2017-12-29 | 2017-12-29 | The return plate of diacytic type axial plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701305U true CN207701305U (en) | 2018-08-07 |
Family
ID=63030781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721920107.3U Expired - Fee Related CN207701305U (en) | 2017-12-29 | 2017-12-29 | The return plate of diacytic type axial plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701305U (en) |
-
2017
- 2017-12-29 CN CN201721920107.3U patent/CN207701305U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 Termination date: 20201229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |