CN205744418U - A kind of hydraulic pump cylinder body copper sheathing fixed structure - Google Patents
A kind of hydraulic pump cylinder body copper sheathing fixed structure Download PDFInfo
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- CN205744418U CN205744418U CN201620445792.8U CN201620445792U CN205744418U CN 205744418 U CN205744418 U CN 205744418U CN 201620445792 U CN201620445792 U CN 201620445792U CN 205744418 U CN205744418 U CN 205744418U
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- copper sheathing
- chamfering
- cylinder body
- hydraulic pump
- fixed structure
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Abstract
This utility model relates to a kind of hydraulic pump cylinder body copper sheathing fixed structure, and including a cylinder body, the side of described cylinder body has a plunger hole being vertically distributed；One copper sheathing, described copper sheathing is embedded in the plunger hole on cylinder body, and described copper sheathing is hollow cylinder shape, the lower end of copper sheathing is provided with chamfering, described chamfering has two, is respectively chamfering A set gradually from top to bottom and has a vertical changeover portion between chamfering B, and chamfering A and chamfering B.The utility model has the advantage of: by arranging two chamferings in the lower end of copper sheathing, when utilizing press to be pressed in the plunger hole of cylinder body by copper sheathing, utilize chamfering A with chamfering B, copper sheathing to be guided, thus effectively avoid pressing the generation of inclined phenomenon, it is ensured that the normal of pump is suitable for.
Description
Technical field
This utility model relates to a kind of hydraulic pump, particularly to a kind of hydraulic pump cylinder body copper sheathing fixed structure.
Background technology
Hydraulic pump provides a kind of Hydraulic Elements of fluid under pressure for hydraulic drive, is the one of pump.Its function is dynamic
The mechanical energy of power machine (such as motor and internal combustion engine etc.) is converted into the pressure energy of liquid.Affect hydraulic pump service life factor very
Many, except pump self design, the factor that manufactures are outer and some selections with pump use related elements (such as shaft coupling, oil filter etc.),
Operations during trial run and run etc. also have relation.The operation principle of hydraulic pump is the change that motion brings pump chamber, thus
Compression fluid makes fluid have pressure energy.
Housing assembly is hydraulic planger pump and hydraulic motor important composition part, the design rationality of cylinder body and use longevity
Life directly influences the quality of hydraulic pressure series products.Stud with the cylinder bore of copper sheathing to coordinate with plunger and can reduce gap, improve volume
Efficiency, as it is shown in figure 1, cylinder body 2 and copper sheathing 1 are for taking interference fit, copper sheathing 1 press is pressed in cylinder body 2, and traditional copper sheathing
1 structure, as in figure 2 it is shown, its end-beveling is as it is shown on figure 3, use this copper sheathing 1 when being fixed, is easily caused copper sheathing 1 and presses partially,
It is easily caused coming off of copper sheathing 1 in the course of the work, eventually results in the damage of pump.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of hydraulic pump cylinder body copper sheathing fixed structure, and copper sheathing is by pressing
The phenomenon that copper sheathing pressure is inclined can be effectively avoided during machine press-in cylinder body.
For solving above-mentioned technical problem, the technical solution of the utility model is: a kind of hydraulic pump cylinder body copper sheathing fixed structure,
Its innovative point is: include
One cylinder body, the side of described cylinder body has a plunger hole being vertically distributed；
One copper sheathing, described copper sheathing is embedded in the plunger hole on cylinder body, and described copper sheathing is hollow cylinder shape, at copper sheathing
Lower end is provided with chamfering, and described chamfering has two, is respectively chamfering A that sets gradually from top to bottom and chamfering B, and chamfering A with
There is between chamfering B a vertical changeover portion.
Further, described chamfering A is 15 ° with the angle of inclination of chamfering B, and the size of vertical changeover portion is than the chi of plunger hole
Very little little 0.05-0.1mm, the ratio between length and the vertical length of chamfering B of described vertical changeover portion is 2:1.
The utility model has the advantage of: in this utility model, by arranging two chamferings in the lower end of copper sheathing, utilizing
When copper sheathing is pressed in the plunger hole of cylinder body by press, utilizes chamfering A with chamfering B, copper sheathing to be guided, thus effectively avoid
Press the generation of inclined phenomenon, it is ensured that the normal of pump is suitable for.
By chamfering A is closed with the angle of inclination of chamfering B and the data such as the size of vertical changeover portion and length
The design of reason, ensure that when being pressed into and plays good guide effect.
Accompanying drawing explanation
With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the connection diagram of cylinder body and copper sheathing.
Fig. 2 is the structural representation of traditional copper sheathing.
Fig. 3 is the I portion enlarged diagram of Fig. 2.
Fig. 4 is the schematic diagram of copper sheathing in hydraulic pump cylinder body copper sheathing fixed structure of the present utility model.
Fig. 5 is the J portion enlarged diagram of Fig. 4.
Fig. 6 is the schematic diagram of hydraulic pump cylinder body copper sheathing fixed structure of the present utility model.
Detailed description of the invention
The following examples can make professional and technical personnel that this utility model is more fully understood, but the most therefore will
This utility model is limited among described scope of embodiments.
A kind of hydraulic pump cylinder body copper sheathing fixed structure as Figure 4-Figure 6, including cylinder body 4 and copper sheathing 3.
Side at cylinder body 4 is provided with a plunger hole being vertically distributed, and this plunger hole is cylindrical shape.
As shown in Figure 4, copper sheathing 3 is embedded in the plunger hole on cylinder body 4, and copper sheathing 3 is in hollow cylinder shape, at copper sheathing 3
Lower end is provided with chamfering.
As it is shown in figure 5, chamfering has two, be respectively chamfering A5 that sets gradually from top to bottom and chamfering B7, chamfering A5 with
Angle between chamfering B7 and perpendicular is 15 °, and has a vertical changeover portion 6, vertical mistake between chamfering A5 and chamfering B7
The size 0.05-0.1mm less than the size of plunger hole of the section of crossing 6, and vertically length and chamfering B7 of changeover portion 6 vertical length it
Between ratio be 2:1.
By arranging two chamferings in the lower end of copper sheathing, chamfering A5 and chamfering B7, utilizing press, copper sheathing 3 is pressed into cylinder body
Time in the plunger hole of 4, utilize chamfering A5 with chamfering B7, copper sheathing 3 to be guided, thus effectively avoid pressing the generation of inclined phenomenon,
Ensure that the normal of pump is suitable for.
Skilled person will appreciate that of the industry, this utility model is not restricted to the described embodiments, above-described embodiment and
Described in description, principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope,
This utility model also has various changes and modifications, and these changes and improvements both fall within claimed this utility model scope
In.This utility model claims scope and is defined by appending claims and equivalent thereof.
Claims (2)
1. a hydraulic pump cylinder body copper sheathing fixed structure, it is characterised in that: include
One cylinder body, the side of described cylinder body has a plunger hole being vertically distributed；
One copper sheathing, described copper sheathing is embedded in the plunger hole on cylinder body, and described copper sheathing is hollow cylinder shape, in the lower end of copper sheathing
Being provided with chamfering, described chamfering has two, is respectively chamfering A that sets gradually from top to bottom and chamfering B, and chamfering A and chamfering B
Between there is a vertical changeover portion.
Hydraulic pump cylinder body copper sheathing fixed structure the most according to claim 1, it is characterised in that: described chamfering A and chamfering B
Angle of inclination is 15 °, the size 0.05-0.1mm less than the size of plunger hole of vertical changeover portion, the length of described vertical changeover portion
And the ratio between the vertical length of chamfering B is 2:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445792.8U CN205744418U (en) | 2016-05-17 | 2016-05-17 | A kind of hydraulic pump cylinder body copper sheathing fixed structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620445792.8U CN205744418U (en) | 2016-05-17 | 2016-05-17 | A kind of hydraulic pump cylinder body copper sheathing fixed structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205744418U true CN205744418U (en) | 2016-11-30 |
Family
ID=57363486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620445792.8U Active CN205744418U (en) | 2016-05-17 | 2016-05-17 | A kind of hydraulic pump cylinder body copper sheathing fixed structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205744418U (en) |
-
2016
- 2016-05-17 CN CN201620445792.8U patent/CN205744418U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |