CN205779289U - Hay mover piston - Google Patents
Hay mover piston Download PDFInfo
- Publication number
- CN205779289U CN205779289U CN201620645133.9U CN201620645133U CN205779289U CN 205779289 U CN205779289 U CN 205779289U CN 201620645133 U CN201620645133 U CN 201620645133U CN 205779289 U CN205779289 U CN 205779289U
- Authority
- CN
- China
- Prior art keywords
- piston
- groove
- pin hole
- annular groove
- alignment pin
- 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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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses hay mover piston, including piston only, before and after piston only, side is arranged with piston pin hole, the cylindrical of piston only is provided with piston ring groove, it is characterized in that: piston ring groove is provided with upper and lower two, upper piston annular groove is fixed with upper alignment pin near the position of upside trough rim, and lower piston annular groove is fixed with lower alignment pin near the position of upside trough rim, and upper and lower alignment pin staggers setting in circumferential direction；It is symmetrically arranged on two with groove before and after the cylindrical of the piston only of position below lower piston annular groove, the face center position of groove is provided with boss, described piston pin hole passes through from boss central authorities, it is provided with circlip groove inside the opening of piston pin hole, the opening end face of piston pin hole is provided with and is partially recessed, and what the degree of depth being partially recessed exceeded circlip groove arranges the degree of depth.The piston ring that this utility model is installed in can preventing piston ring groove operationally produces circumferentially displaced and prevents piston pin from moving axially, it is ensured that the more reliable work of piston, improves service life.
Description
Technical field
This utility model relates to a kind of piston for hay mover.
Background technology
The piston used on existing hay mover, the piston ring installed in having the disadvantage that 1. piston ring grooves is operationally
Can produce circumferentially displaced, if producing at the Guan Bi of circumferentially displaced back piston ring recessed alignment the with piston cylinder endoporus hole wall, that
Piston ring is easy for being scratched to be taken away or heavy wear, works unreliable, affects service life；2. the work in piston pin hole
Plug pin easily moves axially, and makes piston pin produce CONTACT WITH FRICTION with piston cylinder endoporus hole wall, affects service life；3. piston pin hole
And tend not between piston pin obtain good lubrication and caused quick-wearing, affect service life；The most cylindrical piston is originally
Body, by becoming large-sized after high-temperature heat expansion and deforming during work, and has bigger friction between piston cylinder endoporus, impact uses
Life-span.
Summary of the invention
The problem existed in view of currently known technology, the purpose of this utility model is intended to provide one can prevent piston ring
The piston ring installed in groove operationally produces circumferentially displaced and prevents piston pin from moving axially, it is ensured that more reliable work, improves
The hay mover piston that the band piston ring in service life is circumferentially positioned.
This utility model has adopted the following technical scheme that:
Hay mover piston, including piston only, before and after piston only, side is arranged with piston pin hole, outside piston only
Circle is provided with piston ring groove, it is characterised in that: piston ring groove is provided with upper and lower two, and upper piston annular groove is solid near the position of upside trough rim
Surely being provided with alignment pin, the lower half cylindrical of upper alignment pin is positioned at upper piston annular groove groove, and lower piston annular groove is near upside trough rim
Position is fixed with lower alignment pin, and the lower half cylindrical of lower alignment pin is positioned at lower piston annular groove groove, and upper and lower alignment pin is in circumference side
Upwards stagger setting；Groove, the table of groove it is symmetrically arranged on two with before and after the cylindrical of the piston only of position below lower piston annular groove
Middle position, face is provided with boss, and described piston pin hole passes through from boss central authorities, is provided with circlip groove inside the opening of piston pin hole,
The opening end face of piston pin hole is provided with and is partially recessed, and what the degree of depth being partially recessed exceeded circlip groove arranges the degree of depth.
After using technique scheme, the Advantageous Effects that this utility model realizes is: 1. it is fixed to be provided with in piston ring groove
Position pin, at the Guan Bi of the piston ring that alignment pin is installed in just can being stuck in piston ring groove, has thus carried out week to piston ring
To spacing, thus thoroughly prevent piston ring operationally circumferentially displaced, it is ensured that pistons work is reliable, increases the service life；
2. it is provided with circlip groove inside the opening of piston pin hole, the axial of piston pin after placing back-up ring in circlip groove, can be limited from two ends
Mobile, it is to avoid piston pin and the CONTACT WITH FRICTION of piston cylinder endoporus hole wall, improve service life；3. the opening end of piston pin hole
Face is provided with and is partially recessed, and the degree of depth being partially recessed exceed circlip groove the degree of depth is set, so, can greatly facilitate back-up ring
Installing/dismounting.
As preferably, it is recessed that the inner side end of described piston pin hole is provided with triangle at bottom position.By above-mentioned design,
During pistons work, the oil within piston only can be recessed in piston pin hole by triangle so that piston pin hole with
Obtain good lubrication between piston pin, prevent from crossing quick-wearing owing to lubricating bad, improve service life.
As preferably, the cylindrical of the piston only below lower piston annular groove has the taper design that two broad in the middle is little, in
Between a diameter of Dmm, a diameter of D-0.05mm of top, a diameter of D-0.01mm of following.After above-mentioned design, cylindrical piston
Although body is operationally become big by size after high-temperature heat expansion but reserves deformation space, reduce rubbing between piston cylinder endoporus
Wipe, improve service life.
As preferably, the surface of described groove is arranged with left and right elongated hole, left and right elongated hole centered by piston pin hole
By through inside and outside piston only.The setting of elongated hole can improve piston only by the deformability after high-temperature heat expansion, reduction
And the friction between piston cylinder endoporus, improves service life.
Accompanying drawing explanation
This utility model has a drawings described below:
Fig. 1 is shape assumption diagram of the present utility model,
Fig. 2 is the axial sectional view of Fig. 1,
Fig. 3 is the A-A sectional view of Fig. 1,
Fig. 4 is the bottom direction view of Fig. 3.
Detailed description of the invention
As it can be seen, hay mover piston of the present utility model, including piston only 1, before and after piston only 1, side symmetry sets
Having piston pin hole 8, the cylindrical of piston only 1 to be provided with piston ring groove, piston ring groove is provided with upper and lower two, and upper piston annular groove 2 is close
The position of upside trough rim is fixed with alignment pin 4, and the lower half cylindrical of upper alignment pin 4 is positioned at upper piston annular groove 2 groove, lower piston
Annular groove 3 is fixed with lower alignment pin 5 near the position of upside trough rim, and the lower half cylindrical of lower alignment pin 5 is positioned at lower piston annular groove 3 groove
In, upper and lower alignment pin staggers setting in circumferential direction；Before and after the cylindrical of the piston only 1 of lower piston annular groove less than 3 position two
Side is arranged with groove 7, and the face center position of groove 7 is provided with boss 9, and described piston pin hole 8 passes through from boss 9 central authorities, lives
Being provided with circlip groove 12 inside the opening in plug pin hole 8, the opening end face of piston pin hole 8 is provided with and is partially recessed 10, is partially recessed
The degree of depth of 10 exceedes the degree of depth that arranges of circlip groove 12, and it is recessed that the inner side end of described piston pin hole 8 is provided with triangle at bottom position
Entering 11, the cylindrical of the piston only 1 of lower piston annular groove less than 3 has the taper design that two broad in the middle is little, and mid diameter is
Dmm, a diameter of D-0.05mm of top, a diameter of D-0.01mm of following, the surface of described groove 7 is right centered by piston pin hole 8
Claiming to be provided with left and right elongated hole 6, left and right elongated hole 6 is by through inside and outside piston only 1.
Claims (4)
1. hay mover piston, including piston only, before and after piston only, side is arranged with piston pin hole, the cylindrical of piston only
It is provided with piston ring groove, it is characterised in that: piston ring groove is provided with upper and lower two, and upper piston annular groove is fixed near the position of upside trough rim
Being provided with alignment pin, the lower half cylindrical of upper alignment pin is positioned at upper piston annular groove groove, and lower piston annular groove is near the position of upside trough rim
Putting and be fixed with lower alignment pin, the lower half cylindrical of lower alignment pin is positioned at lower piston annular groove groove, and upper and lower alignment pin is in circumferential direction
On stagger setting；Groove, the surface of groove it is symmetrically arranged on two with before and after the cylindrical of the piston only of position below lower piston annular groove
Middle position is provided with boss, and described piston pin hole passes through from boss central authorities, is provided with circlip groove inside the opening of piston pin hole, lives
The opening end face in plug pin hole is provided with and is partially recessed, and what the degree of depth being partially recessed exceeded circlip groove arranges the degree of depth.
2. hay mover piston as claimed in claim 1, it is characterised in that: the inner side end of described piston pin hole is at bottom position
It is provided with triangle recessed.
3. hay mover piston as claimed in claim 1, it is characterised in that: the cylindrical tool of the piston only below lower piston annular groove
Having the taper design that two broad in the middle is little, mid diameter is Dmm, a diameter of D-0.05mm of top, a diameter of D-0.01mm of following.
4. hay mover piston as claimed in claim 1, it is characterised in that: the surface of described groove is right centered by piston pin hole
Claiming to be provided with left and right elongated hole, left and right elongated hole is by through inside and outside piston only.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645133.9U CN205779289U (en) | 2016-06-27 | 2016-06-27 | Hay mover piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620645133.9U CN205779289U (en) | 2016-06-27 | 2016-06-27 | Hay mover piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205779289U true CN205779289U (en) | 2016-12-07 |
Family
ID=58130924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620645133.9U Expired - Fee Related CN205779289U (en) | 2016-06-27 | 2016-06-27 | Hay mover piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205779289U (en) |
-
2016
- 2016-06-27 CN CN201620645133.9U patent/CN205779289U/en not_active Expired - Fee Related
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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: 20161207 Termination date: 20170627 |