CN209413999U - Novel steel pistons - Google Patents
Novel steel pistons Download PDFInfo
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- CN209413999U CN209413999U CN201821863154.3U CN201821863154U CN209413999U CN 209413999 U CN209413999 U CN 209413999U CN 201821863154 U CN201821863154 U CN 201821863154U CN 209413999 U CN209413999 U CN 209413999U
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- piston
- screw thread
- boss
- novel steel
- oil
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Abstract
The utility model provides a kind of novel steel pistons, it include: the piston only and piston boss being equipped with, the inner cavity of piston only is equipped with the first screw thread, the upper periphery face of piston boss is equipped with the second screw thread, first screw thread and the second screw thread cooperate, piston only is threadedly coupled by the first screw thread with second with piston boss, and closed inner-cooling oil recess is formed at the top of piston only and piston boss.Pass through the technical solution of the utility model, without welding, convenient processing and manufacture, high production efficiency, and inner-cooling oil recess is not easy to plug, the generation for phenomena such as the effective guarantee cooling effect of inner-cooling oil recess, inner-cooling oil recess are not easy carbon distribution, reduce piston Cracking Failure, and plunger designs freedom degree be limited it is small, piston overall weight can be relatively light, is conducive to the quality for promoting piston on the whole, and effectively improve the service life of piston.
Description
Technical field
The utility model relates to piston technical fields, in particular to a kind of novel steel pistons.
Background technique
With high power, the development trend of low oil consumption, low emission, diesel engine will bear more great outburst pressure, and then piston
The mechanical load and thermic load born is also higher and higher, and to the performance of piston, more stringent requirements are proposed.Traditional aluminium alloy
Piston has been difficult to meet reliability requirement, and steel pistons thermally expand small and be widely used and be in because having many advantages, such as intensity height
The impetus of existing high speed development.
In the related technology, the steel pistons structure used that can be used for installing mainly has integral type piston with forged steel structure, exist with
Lower technological deficiency:
Integral type piston with forged steel structure mainly utilizes steel disc closed inner-cooling oil recess or uses friction welding (FW), Laser Welding, pricker
Piston is welded into complete forging steel piston by the welding techniques such as weldering, easy to form winged in welding position by the steel pistons of welding
Side blocks inner-cooling oil recess, the cooling effect of inner-cooling oil recess is influenced, while after piston is using a period of time, in inner-cooling oil recess
It is easy to produce carbon distribution, and is not easy to be discharged, carbon distribution can have an impact heat transfer and cooling, be easy to cause piston high temperature, be more than steel
The fatigue limit of material, is easy to cause piston Cracking Failure occur；In addition, by the bad arrangement of the limited weld seam of structure, in order to give weld seam
Reserved space needs to sacrifice piston overall weight, and needs to consider the realizability of welding procedure, to plunger designs freedom degree
It limits larger.
Utility model content
The utility model aims to solve at least one of technical problems existing in the prior art or related technologies.
For this purpose, one of the utility model is designed to provide a kind of novel steel pistons.
To achieve the goals above, the technical solution of the utility model provides a kind of novel steel pistons, comprising: cooperation is set
The piston only and piston boss set, the inner cavity of piston only are equipped with the first screw thread, and the upper periphery face of piston boss is equipped with the
Two screw threads, the first screw thread and the second screw thread cooperate, and piston only and piston boss are connected by the first screw thread and the second screw thread
It connects, closed inner-cooling oil recess is formed at the top of piston only and piston boss.
In the present solution, being equipped with the first screw thread by the inner cavity of piston only, the upper periphery face of piston boss is equipped with second
Screw thread, the first screw thread and the second screw thread cooperate, and piston only is threadedly coupled by the first screw thread with second with piston boss,
To form closed inner-cooling oil recess, without welding, convenient processing and manufacture, high production efficiency, and inner-cooling oil recess is not easy to plug,
The generation for phenomena such as the effective guarantee cooling effect of inner-cooling oil recess, inner-cooling oil recess are not easy carbon distribution, reduce piston Cracking Failure,
And plunger designs freedom degree is limited small, and piston overall weight can be relatively light, be conducive to the quality for promoting piston on the whole.
Preferably, further includes: locking device is used in the bottom of piston boss and the inner cavity of insertion piston only
Fixed piston key seat.
In the present solution, by the locking device in the bottom of piston boss and the inner cavity of insertion piston only, it can
Fixed piston key seat, locking device can bear the part reciprocal inertia force generated when piston motion, be conducive to promote piston
Service life.
Preferably, piston only includes: the annular oil cavity and conical cavity being equipped with；Combustion chamber is set to piston sheet
In the inside groove in body top center；Piston ring groove, on the periphery at the top of piston only, by the inside spill of periphery
At.
It, can be in the present solution, form the space of inner-cooling oil recess by the annular oil cavity that is equipped with and conical cavity
Realize that effective cooling, conical cavity reduce occupied space while realizing effective cooling, be conducive to reduce
Piston overall volume and weight are advantageously implemented fuel by being set to the inside groove inner combustion chamber in piston only top center
Active combustion, realize the function of piston, and convenient processing and manufacture, by be set to piston only at the top of periphery on, by
Periphery concaves the piston ring groove to be formed, and is conducive to strike off the lubricating oil on casing wall, reduces the loss of lubricating oil.
Preferably, piston boss includes: piston pin hole, and the central axis of piston pin hole and the central axes of novel steel pistons are hung down
Directly；Oilhole, on the Upper cylindrical face of piston boss, the central axis of oilhole and the central axis upright of piston pin hole, oil
Hole and inner-cooling oil recess penetrate through；Fuel feed hole, set on the side of piston pin hole, the central axis of fuel feed hole and the central axis of piston pin hole
Line is in angle, and fuel feed hole and annular oil cavity penetrate through；Oil outlet, set on the other side of piston pin hole, the centre bit set of oil outlet
In on the long axis of novel steel pistons, oil outlet and annular oil cavity are penetrated through.
In the present solution, by the oilhole on the Upper cylindrical face of piston boss, the central axis and piston pin of oilhole
The central axis upright in hole, oilhole and inner-cooling oil recess penetrate through, and parts of lubricating oil can be imported piston pin hole and play certain profit
Sliding effect, is conducive to the cooperative movement between piston pin hole and piston pin, further improves the whole service life of piston, leads to
The oil outlet of the fuel feed hole set on the side of piston pin hole and the other side set on piston pin hole is crossed, fuel feed hole, oil outlet are all
It is penetrated through with annular oil cavity, the oil inlet of the novel steel pistons of internal combustion engine and fuel-displaced is realized, in promotion piston whole compressive strength
Meanwhile effective operation of inner-cooling oil recess, cooling are ensured.
Preferably, piston pin hole is noncircular pin hole.
Preferably, piston ring groove includes twice compression oil ring groove with together with, and compression, compression ring are followed successively by under by top
Slot, oil ring groove.
In the present solution, including twice compression oil ring groove with together with by piston ring groove, compression ring is followed successively by under by top
Slot, compression, oil ring groove are conducive to strike off the lubricating oil on casing wall, reduce the loss of lubricating oil.
Preferably, piston only and piston boss are alloy steel piece.
In the present solution, be alloy steel piece by piston only and piston boss being alloy steel piece, so that piston is whole
Intensity it is high, thermally expand small, further improve compressive property, further improve the reliability of piston entirety and use the longevity
Life.
By above technical scheme, it is equipped with the first screw thread in the inner cavity of piston only, the upper periphery face of piston boss is set
There is the second screw thread, the first screw thread and the second screw thread cooperate, and piston only and piston boss pass through the first screw thread and the second spiral shell
Line connection, so that closed inner-cooling oil recess is formed, and setting locking device, without welding, convenient processing and manufacture, production efficiency
Height, and inner-cooling oil recess is not easy to plug, the effective guarantee cooling effect of inner-cooling oil recess, inner-cooling oil recess are not easy carbon distribution, reduce
The generation of phenomena such as piston Cracking Failure, and plunger designs freedom degree is limited small, and piston overall weight can be relatively light, whole
On be conducive to be promoted the quality of piston, and effectively improve the service life of piston.
The additional aspect and advantage of the utility model will provide in following description section, partially will be from following description
In become obvious, or recognized by the practice of the utility model.
Detailed description of the invention
The above-mentioned and/or additional aspect and advantage of the utility model from the description of the embodiment in conjunction with the following figures will
Become obvious and be readily appreciated that, in which:
Fig. 1 shows the structural schematic diagram of the novel steel pistons of one embodiment according to the present utility model；
Fig. 2 shows the structural schematic diagrams of the novel steel pistons of one embodiment according to the present utility model；
Fig. 3 shows the schematic top plan view of the novel steel pistons of one embodiment according to the present utility model,
Wherein, corresponding relationship of the Fig. 1 into Fig. 3 between appended drawing reference and component are as follows:
10 piston onlies, 102 first screw threads, 104 annular oil cavities, 106 conical cavities, 108 combustion chambers, 110 piston rings
Slot, 20 piston bosses, 202 second screw threads, 204 piston pin holes, 206 oilholes, 208 fuel feed holes, 210 oil outlets, 30 locking devices.
Specific embodiment
In order to be more clearly understood that the above objects, features, and advantages of the utility model, with reference to the accompanying drawing and have
The utility model is further described in detail in body embodiment.It should be noted that in the absence of conflict, this Shen
The feature in embodiment and embodiment please can be combined with each other.
Many details are explained in the following description in order to fully understand the utility model, still, this is practical
Novel to be implemented using other than the one described here other modes, therefore, the protection scope of the utility model is simultaneously
It is not limited by the specific embodiments disclosed below.
It is specifically described below with reference to novel steel pistons of the Fig. 1 to Fig. 3 to embodiment according to the present utility model.
As shown in Figure 1 to Figure 3, the novel steel pistons of embodiment according to the present utility model, comprising: the piston being equipped with
The inner cavity of ontology 10 and piston boss 20, piston only 10 is equipped with the first screw thread 102, and the upper periphery face of piston boss 20 is set
There is the second screw thread 202, the first screw thread 102 and the second screw thread 202 cooperate, and piston only 10 and piston boss 20 pass through first
Screw thread 102 is connect with the second screw thread 202, and closed inner-cooling oil recess is formed at the top of piston only 10 and piston boss 20.
In the present embodiment, the first screw thread 102, the upper periphery of piston boss 20 are equipped with by the inner cavity of piston only 10
Face is equipped with the second screw thread 202, and the first screw thread 102 and the second screw thread 202 cooperate, and piston only 10 passes through with piston boss 20
First screw thread 102 is connect with the second screw thread 202, to form closed inner-cooling oil recess, without welding, convenient processing and manufacture is raw
Produce high-efficient, and inner-cooling oil recess is not easy to plug, and the effective guarantee cooling effect of inner-cooling oil recess, inner-cooling oil recess are not easy carbon distribution,
The generation for phenomena such as reducing piston Cracking Failure, and plunger designs freedom degree is limited small, and piston overall weight can be relatively
Gently, be conducive to be promoted the quality of piston on the whole.
As shown in Fig. 2, novel steel pistons further include: locking device 30, bottom and insertion piston set on piston boss 20
In the inner cavity of ontology 10, it to be used for fixed piston key seat 20.
In the present embodiment, pass through the locking device being set in the bottom of piston boss 20 and the inner cavity of insertion piston only 10
30, it is capable of fixing piston boss 20, locking device 30 can bear the part reciprocal inertia force generated when piston motion, be conducive to
Promote the service life of piston.
As depicted in figs. 1 and 2, piston only 10 includes: the annular oil cavity 104 and conical cavity 106 being equipped with；Combustion
Room 108 is burnt, in the groove inside set on 10 top center of piston only；Piston ring groove 110, set on the outer of 10 top of piston only
On disc, is concaved and formed by periphery.
In the present embodiment, the sky of inner-cooling oil recess is formd by the annular oil cavity 104 and conical cavity 106 that are equipped with
Between, effective cooling may be implemented, conical cavity 106 reduces occupied space while realizing effective cooling,
Be conducive to reduce piston overall volume and weight, by being set to the inside groove inner combustion chamber 108 in 10 top center of piston only,
It is advantageously implemented the active combustion of fuel, realizes the function of piston, and convenient processing and manufacture, is pushed up by being set to piston only 10
On the periphery in portion, concaved the piston ring groove 110 formed by periphery, is conducive to strike off the lubricating oil on casing wall, reduces profit
The loss of lubricating oil.
As shown in Figures 2 and 3, piston boss 20 includes: piston pin hole 204, the central axis of piston pin hole 204 and new
The central axes of fashioned iron piston are vertical；Oilhole 206, on the Upper cylindrical face of piston boss 20, the central axis of oilhole 206 with
The central axis upright of piston pin hole 204, oilhole 206 and inner-cooling oil recess penetrate through；Fuel feed hole 208, set on piston pin hole 204
Side, the central axis of fuel feed hole 208 and the central axis of piston pin hole 204 are in angle, fuel feed hole 208 and annular oil cavity 104
Perforation；Oil outlet 210, set on the other side of piston pin hole 204, the center of oil outlet 210 is located at the length of novel steel pistons
On axis, oil outlet 210 and annular oil cavity 104 are penetrated through.
In the present embodiment, pass through the oilhole 206 on the Upper cylindrical face of piston boss 20, the central axis of oilhole 206
The central axis upright of line and piston pin hole 204, oilhole 206 and inner-cooling oil recess penetrate through, and parts of lubricating oil can be imported piston
Pin hole 204 plays certain lubricating action, is conducive to the cooperative movement between piston pin hole 204 and piston pin, is further promoted
The whole service life of piston, by being set to the fuel feed hole 208 of the side of piston pin hole 204 and being set to piston pin hole 204
The other side oil outlet 210, fuel feed hole 208, oil outlet 210 all penetrate through with annular oil cavity 104, realizes internal combustion engine with novel
The oil inlet of steel pistons and fuel-displaced, while promoting piston whole compressive strength, has ensured effective operation of inner-cooling oil recess, radiates
It is cooling.
Piston pin hole 204 is noncircular pin hole.
Piston ring groove 110 include twice compression oil ring groove with together with, be followed successively by by top under compression, compression,
Oil ring groove.
In the present embodiment, includes twice compression oil ring groove with together with by piston ring groove 110, be followed successively by by top under
Compression, compression, oil ring groove are conducive to strike off the lubricating oil on casing wall, reduce the loss of lubricating oil.
Piston only 10 and piston boss 20 are alloy steel piece.
It is alloy steel piece by piston only 10 and piston boss 20 is alloy steel piece in the present embodiment, so that living
It is high to fill in whole intensity, thermal expansion is small, further improves compressive property, further improves the reliability of piston entirety and makes
Use the service life.
The technical solution of the utility model is had been described in detail above with reference to the accompanying drawings, the utility model proposes a kind of Novel steels
Piston, by being equipped with the first screw thread in the inner cavity of piston only, the upper periphery face of piston boss is equipped with the second screw thread, the first spiral shell
Line and the second screw thread cooperate, and piston only is threadedly coupled by the first screw thread with second with piston boss, to form envelope
The inner-cooling oil recess closed, and setting locking device, without welding, convenient processing and manufacture, high production efficiency, and inner-cooling oil recess is not
Phenomena such as easily blocking, the effective guarantee cooling effect of inner-cooling oil recess, inner-cooling oil recess are not easy carbon distribution, reduce piston Cracking Failure
Generation, and plunger designs freedom degree is limited small, and piston overall weight can be relatively light, be conducive to promote piston on the whole
Quality, and effectively improve the service life of piston.
In the present invention, term " first ", " second ", " third " are only used for the purpose of description, and should not be understood as
Indication or suggestion relative importance；Term " multiple " then refers to two or more, unless otherwise restricted clearly.Term " peace
Dress ", " connected ", " connection ", the terms such as " fixation " shall be understood in a broad sense, can also be with for example, " connection " may be a fixed connection
It is to be detachably connected, or be integrally connected；" connected " can be directly connected, can also be indirectly connected through an intermediary.It is right
For those skilled in the art, can understand as the case may be above-mentioned term in the present invention specifically contain
Justice.
In the description of the utility model, it is to be understood that term " on ", "lower", "left", "right", "front", "rear" etc. refer to
The orientation or positional relationship shown be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description the utility model and
Simplify description, rather than the device or unit of indication or suggestion meaning there must be specific direction, with specific orientation construction
And operation, it is thus impossible to be construed as a limitation of the present invention.
In the description of this specification, the description of term " one embodiment ", " some embodiments ", " specific embodiment " etc.
Mean that particular features, structures, materials, or characteristics described in conjunction with this embodiment or example are contained at least the one of the utility model
In a embodiment or example.In the present specification, schematic expression of the above terms are not necessarily referring to identical embodiment
Or example.Moreover, the particular features, structures, materials, or characteristics of description can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (6)
1. a kind of novel steel pistons characterized by comprising
The inner cavity of the piston only and piston boss being equipped with, the piston only is equipped with the first screw thread, the piston boss
Upper periphery face be equipped with the second screw thread, first screw thread and second screw thread cooperate, the piston only and institute
It states piston boss to be threadedly coupled by first screw thread with described second, the top of the piston only and the piston boss
Form closed inner-cooling oil recess.
2. novel steel pistons according to claim 1, which is characterized in that further include:
Locking device, in the bottom of the piston boss and the inner cavity of the insertion piston only, for fixing the work
Plug pin seat.
3. novel steel pistons according to claim 2, which is characterized in that the piston only includes:
The annular oil cavity and conical cavity being equipped with；
Combustion chamber, in the groove inside set on the piston only top center；
Piston ring groove is concaved by the periphery and is formed on the periphery at the top of the piston only.
4. novel steel pistons according to claim 3, which is characterized in that the piston boss includes:
Piston pin hole, the central axis of the piston pin hole are vertical with the central axes of the novel steel pistons；
Oilhole, on the Upper cylindrical face of the piston boss, in the central axis of the oilhole and the piston pin hole
Mandrel line is vertical, and the oilhole and the inner-cooling oil recess penetrate through；
Fuel feed hole, set on the side of the piston pin hole, the central axis of the central axis of the fuel feed hole and the piston pin hole
Line is in angle, and the fuel feed hole and the annular oil cavity penetrate through；
Oil outlet, set on the other side of the piston pin hole, the center of the oil outlet is located at the novel steel pistons
On long axis, the oil outlet and the annular oil cavity are penetrated through.
5. novel steel pistons according to claim 4, which is characterized in that
The piston ring groove includes twice compression oil ring groove with together with, and compression, compression, oil ring are followed successively by under by top
Slot.
6. novel steel pistons according to claim 5, which is characterized in that
The piston only and the piston boss are alloy steel piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821863154.3U CN209413999U (en) | 2018-11-13 | 2018-11-13 | Novel steel pistons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821863154.3U CN209413999U (en) | 2018-11-13 | 2018-11-13 | Novel steel pistons |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209413999U true CN209413999U (en) | 2019-09-20 |
Family
ID=67933838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821863154.3U Withdrawn - After Issue CN209413999U (en) | 2018-11-13 | 2018-11-13 | Novel steel pistons |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209413999U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184937A (en) * | 2018-11-13 | 2019-01-11 | 滨州渤海活塞有限公司 | Novel steel pistons |
-
2018
- 2018-11-13 CN CN201821863154.3U patent/CN209413999U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109184937A (en) * | 2018-11-13 | 2019-01-11 | 滨州渤海活塞有限公司 | Novel steel pistons |
| CN109184937B (en) * | 2018-11-13 | 2021-02-12 | 滨州渤海活塞有限公司 | Steel piston |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190920 Effective date of abandoning: 20210212 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190920 Effective date of abandoning: 20210212 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |