CN209800106U - Weight-reduction split piston with low maintenance cost - Google Patents
Weight-reduction split piston with low maintenance cost Download PDFInfo
- Publication number
- CN209800106U CN209800106U CN201920237923.7U CN201920237923U CN209800106U CN 209800106 U CN209800106 U CN 209800106U CN 201920237923 U CN201920237923 U CN 201920237923U CN 209800106 U CN209800106 U CN 209800106U
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- pin shaft
- weight
- shaft connecting
- connecting seats
- annular
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- Expired - Fee Related
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a weight reduction split piston with low maintenance cost, it includes: the cylindrical piston comprises a cylindrical piston body, a pin shaft and pin shaft connecting seats, wherein a circle of first annular lightening grooves are formed in the lower portion of an inner cavity of the cylindrical piston body, the pin shaft connecting seats are symmetrically arranged in the first annular lightening grooves, stepped holes are formed in the back faces of the pin shaft connecting seats in an inwards concave mode, the pin shaft is arranged between the two pin shaft connecting seats, the end portions of the pin shaft connecting seats extend into the stepped holes, snap springs for limiting the pin shaft are arranged in the stepped holes, a second annular lightening groove corresponding to the pin shaft connecting seats is formed in the lower portion of the outer circle of the cylindrical piston body, and screws connected with the pin shaft connecting seats are. Maintenance cost low subtracts heavy components of a whole that can function independently piston, set up first annular very much and subtract heavy groove and second annular and subtract heavy groove and subtract heavy, the dismouting is simple and convenient, has reduced the cost of maintaining, the structure is succinct, stability is high moreover.
Description
Technical Field
The utility model relates to a piston field especially relates to a weight reduction components of a whole that can function independently piston that maintenance cost is low.
Background
The piston is an indispensable important component of the engine. In recent years, the engine has been strengthened more and more, and the engine speed, the average effective pressure and the piston average speed have been improved more and more than before, so that the thermal load and the mechanical load of the engine have been increased. Due to the important function of the piston in the engine, the design and the manufacture of the piston are greatly changed and improved, so that the piston can meet the emission standard with high requirements in the real society.
A pin shaft seat for fixing a pin shaft is usually arranged in the piston, and the piston and the pin shaft seat are integrally cast with aluminum. The piston of the integrated cast aluminum overall structure is high in strength, but the pin shaft and the pin shaft seat cannot be detached for maintenance, the use cost in the later period is high, the structure of the split piston is usually complex, the dead weight is large, and the energy conservation and consumption reduction of an engine are not facilitated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a weight reduction components of a whole that can function independently piston that maintenance cost is low simplifies the components of a whole that can function independently structure, promotes the dismouting convenience to reduce the dead weight.
To achieve the purpose, the utility model adopts the following technical proposal:
A weight-reducing split piston with low maintenance cost, comprising: the cylindrical piston comprises a cylindrical piston body, a pin shaft and pin shaft connecting seats, wherein a circle of first annular lightening grooves are formed in the lower portion of an inner cavity of the cylindrical piston body, the pin shaft connecting seats are symmetrically arranged in the first annular lightening grooves, stepped holes are formed in the back faces of the pin shaft connecting seats in an inwards concave mode, the pin shaft is arranged between the two pin shaft connecting seats, the end portions of the pin shaft connecting seats extend into the stepped holes, snap springs for limiting the pin shaft are arranged in the stepped holes, a second annular lightening groove corresponding to the pin shaft connecting seats is formed in the lower portion of the outer circle of the cylindrical piston body, and screws connected with the pin shaft connecting seats are.
and the back of the pin shaft connecting seat is provided with an outward convex cambered surface corresponding to the first annular weight reduction groove.
Wherein, the front of the pin shaft connecting seat is provided with a conical slope surface for reducing weight.
And a clamping groove corresponding to the clamping spring is arranged on the pin shaft.
The number of the second annular weight-reducing grooves is two, and the second annular weight-reducing grooves are respectively positioned above and below the stepped hole.
The cylindrical piston base body is of a cast aluminum structure with an opening at the bottom.
Wherein, the excircle of the cylindrical piston base body is provided with a gas ring groove and an oil ring groove.
The utility model has the advantages that: a first annular weight reduction groove and a second annular weight reduction groove are particularly arranged for weight reduction, partial limitation of a pin shaft connecting seat is achieved through the first annular weight reduction groove, installation of a screw and hiding of the head of the screw are achieved through the second annular weight reduction groove, disassembly and assembly are simple and convenient, maintenance cost is reduced, axial limitation of a pin shaft is achieved through a clamp spring, the structure is simple, and stability is high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solution of the present invention is further explained by the specific embodiment with reference to fig. 1.
A weight-reducing split piston with low maintenance cost, comprising: the piston comprises a cylindrical piston base body 1, a pin shaft 6 and a pin shaft connecting seat 9, wherein the cylindrical piston base body 1 is of a cast aluminum structure with an opening at the bottom, and is light in dead weight and high in strength. And a circle of first annular weight-reducing grooves 7 are formed in the lower part of the inner cavity of the cylindrical piston base body 1, so that the self weight of the cylindrical piston base body 1 is reduced.
The pin shaft connecting seats 9 are symmetrically arranged in the first annular weight reducing grooves 7, and the back surfaces of the pin shaft connecting seats 9 are provided with convex arc surfaces corresponding to the first annular weight reducing grooves 7, so that the joint degree is high, and the structural stability is good. The first annular weight reduction groove 7 is used for limiting the pin shaft connecting seat 9, a stepped hole 11 is formed in the back face of the pin shaft connecting seat 9 in a concave mode, and the stepped hole 11 can also reduce the dead weight of the pin shaft connecting seat 9. The front surface of the pin shaft connecting seat 9 is provided with a conical slope 10 to reduce weight, so that the dead weight of the pin shaft connecting seat 9 is further reduced, and the reduction of the energy consumption of an engine is facilitated.
The hinge pin 6 is arranged between the two hinge pin connecting seats 9, the end portion of the hinge pin extends into the stepped hole 11, the snap spring 8 for limiting the hinge pin 6 is arranged in the stepped hole 11, axial limiting of the hinge pin 6 is achieved, the hinge pin 6 is provided with the snap groove corresponding to the snap spring 8, installation and disassembly are convenient, maintenance and replacement can be carried out in a split mode, and maintenance cost is reduced.
The cylindrical piston is characterized in that a second annular weight-reducing groove 5 corresponding to the pin shaft connecting seat 9 is formed in the lower portion of the outer circle of the cylindrical piston base body 1, screws 4 connected with the pin shaft connecting seat 9 are arranged in the second annular weight-reducing groove 5, the pins of the pin shaft connecting seat 9 are fixed through the screws 4, the number of the second annular weight-reducing grooves 5 is two, the second annular weight-reducing grooves are respectively located above and below the stepped hole 11, the stepped hole 11 is prevented from influencing the installation of the screws 4, and weight reduction and the hiding of the head of the screws 4 can be achieved through the second annular weight-reducing groove.
The outer circle of the cylindrical piston base body 1 is provided with a gas ring groove 2 and an oil ring groove 3, and the gas ring and the oil ring are installed respectively to ensure the air tightness of the piston during movement.
During installation, the two pin shaft connecting seats 9 are oppositely sleeved on the pin shaft 6, then the clamp spring 8 is installed on the pin shaft 6 for limiting, then the pin shaft 6 is placed in the cylindrical piston base body 1, and after the sliding pin shaft connecting seats 9 enter the designated positions in the first annular weight reduction groove 7, the fixing is completed by the bolts 4, so that the operation is simple and convenient, and the disassembly is also convenient.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (7)
1. A weight-reducing split piston with low maintenance cost, comprising: the cylindrical piston comprises a cylindrical piston body, a pin shaft and pin shaft connecting seats, wherein a circle of first annular lightening grooves are formed in the lower portion of an inner cavity of the cylindrical piston body, the pin shaft connecting seats are symmetrically arranged in the first annular lightening grooves, stepped holes are formed in the back faces of the pin shaft connecting seats in an inwards concave mode, the pin shaft is arranged between the two pin shaft connecting seats, the end portions of the pin shaft connecting seats extend into the stepped holes, snap springs for limiting the pin shaft are arranged in the stepped holes, a second annular lightening groove corresponding to the pin shaft connecting seats is formed in the lower portion of the outer circle of the cylindrical piston body, and screws connected with the pin shaft connecting seats are.
2. A weight-reducing split piston with low maintenance cost as claimed in claim 1, wherein the back of said pin connecting seat is provided with an outward convex arc surface corresponding to the first annular weight-reducing groove.
3. A weight-reducing split piston with low maintenance cost as claimed in claim 1, wherein the pin connecting seat is provided with a tapered slope surface on the front surface to reduce weight.
4. A weight-reducing split piston with low maintenance cost as claimed in claim 1, wherein said pin is provided with a locking groove corresponding to the snap spring.
5. A low-maintenance weight-reduction split piston according to claim 1, wherein said second annular weight-reduction grooves are two in number and located above and below the stepped hole, respectively.
6. A low maintenance, weight reducing split piston as set forth in claim 1 wherein said barrel piston base is an open-bottomed cast aluminum construction.
7. A weight-reducing split piston with low maintenance cost as set forth in claim 1, wherein said cylindrical piston base body outer circle is provided with a gas ring groove and an oil ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920237923.7U CN209800106U (en) | 2019-02-26 | 2019-02-26 | Weight-reduction split piston with low maintenance cost |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920237923.7U CN209800106U (en) | 2019-02-26 | 2019-02-26 | Weight-reduction split piston with low maintenance cost |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209800106U true CN209800106U (en) | 2019-12-17 |
Family
ID=68822705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920237923.7U Expired - Fee Related CN209800106U (en) | 2019-02-26 | 2019-02-26 | Weight-reduction split piston with low maintenance cost |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209800106U (en) |
-
2019
- 2019-02-26 CN CN201920237923.7U patent/CN209800106U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191217 Termination date: 20210226 |