CN113756981A - Double-sided guide piston - Google Patents

Double-sided guide piston Download PDF

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Publication number
CN113756981A
CN113756981A CN202111152085.1A CN202111152085A CN113756981A CN 113756981 A CN113756981 A CN 113756981A CN 202111152085 A CN202111152085 A CN 202111152085A CN 113756981 A CN113756981 A CN 113756981A
Authority
CN
China
Prior art keywords
piston
piston head
head
cooling oil
double
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.)
Pending
Application number
CN202111152085.1A
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Chinese (zh)
Inventor
覃壮革
沈捷
黄豪
蓝宇翔
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangxi Yuchai Machinery Co Ltd
Original Assignee
Guangxi Yuchai Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Guangxi Yuchai Machinery Co Ltd filed Critical Guangxi Yuchai Machinery Co Ltd
Priority to CN202111152085.1A priority Critical patent/CN113756981A/en
Publication of CN113756981A publication Critical patent/CN113756981A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/16—Pistons  having cooling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F3/00—Pistons 
    • F02F3/28—Other pistons with specially-shaped head

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

The application provides a two-sided direction piston belongs to piston technical field. The double-sided guide piston comprises a piston body and a cooling oil cavity cover. Piston body includes piston head and piston skirt portion, the piston head is fixed in piston skirt portion top, the piston head with piston skirt portion corresponds the setting, the inside casting of piston head has the cooling oil pocket, the piston head outside is provided with the piston ring groove, the inside shrinkage pool that is provided with of cooling oil pocket, the shrinkage pool with the cooling oil pocket corresponds the setting, cooling oil chamber lid with the piston head bottom is fixed, through the shrinkage pool that sets up, conveniently reduces piston head material volume, is convenient for reduce piston head quality to reduce the load of engine bearing, improve engine bearing life.

Description

Double-sided guide piston
Technical Field
The application relates to the technical field of pistons, in particular to a double-faced guide piston.
Background
The piston is the core component of the piston reciprocating internal combustion engine, and is combined with a crankshaft and a connecting rod to play a role in converting linear reciprocating motion into rotary motion or reversing the function.
At present, the steel piston structure is too heavy, because four surfaces of the piston are connected into a whole, the material consumption is large, the weight of the piston is naturally increased, and thus when the piston reciprocates, the inertia force can be additionally applied to an engine, the load of an engine bearing is increased, and the service life of the engine bearing is influenced.
Disclosure of Invention
In order to remedy the above deficiencies, the present application provides a double-sided pilot piston, aiming at improving the above mentioned problems.
The embodiment of the application provides a double-sided guide piston which comprises a piston body and a cooling oil cavity cover.
The piston body includes piston head and piston skirt portion, the piston head is fixed in piston skirt portion top, the piston head with piston skirt portion corresponds the setting, the inside casting of piston head has the cooling oil pocket, the piston head outside is provided with the piston ring groove, the inside shrinkage pool that is provided with of cooling oil pocket, the shrinkage pool with the cooling oil pocket corresponds the setting, cooling oil chamber lid with the piston head bottom is fixed.
In the implementation process, the cooling oil cavity cover is fixed to the bottom of the piston head, and through the arranged concave hole, the quantity of the material at the head of the piston head is conveniently reduced, the quality of the head of the piston head is conveniently reduced, so that the load of an engine bearing is reduced, and the service life of the engine bearing is prolonged.
In a particular embodiment, the piston head is provided as a ring, with a cross-sectional area at one end of the piston head being greater than a cross-sectional area at an end of the piston head.
In the implementation process, the piston head is arranged as a ring body, the section area of one end of the piston head is larger than that of one end of the piston head, and the two ends of the piston head are arranged differently, so that the piston head and the skirt portion of the piston can be conveniently installed.
In a particular embodiment, the top of the skirt is provided with a cavity and the head is secured to the top of the cavity.
In the implementation process, the top of the piston skirt is provided with a cavity, the piston head is fixed to the top of the cavity, and the piston head and the top of the piston skirt are conveniently fixed through the arranged cavity.
In a specific embodiment, the number of the piston ring grooves is arranged in a plurality, and the piston ring grooves are distributed on the surface of the piston head at intervals.
In the implementation process, the piston ring grooves are arranged to be a plurality of, and the external piston rings are conveniently positioned and installed through the arranged piston ring grooves.
In a particular embodiment, the piston head is provided with a combustion chamber at one end, the combustion chamber being disposed between the ring grooves.
In the implementation process, one end of the piston head is provided with the combustion chamber, the combustion chamber is arranged between the piston ring grooves, and fuel can be combusted inside the combustion chamber when the piston head is convenient to use through the arranged combustion chamber.
In a particular embodiment, the piston head has a first weld interruption provided internally at one end thereof, said first weld interruption being provided in correspondence with the skirt of the piston.
In the implementation process, a first welding fracture is arranged inside one end of the piston head and corresponds to the skirt portion of the piston, and the bottom of the piston head and the top of the skirt portion of the piston are conveniently positioned and fixed through the arranged first welding fracture.
In a specific embodiment, the contact portion of the piston head and the cooling oil cavity cover is provided with a weight-removing hole.
In the implementation process, the contact part of the piston head and the cooling oil cavity cover is provided with the weight removing hole, and the total amount of materials used for the piston is conveniently reduced and the piston quality is reduced through the weight removing hole.
In a specific embodiment, the surface of the cooling oil cavity cover is provided with an oil inlet hole and an oil return hole.
In the implementation process, the oil inlet hole and the oil return hole are arranged, so that the oil can be conveniently cooled circularly.
In a specific embodiment, the piston skirt surface is provided with a piston pin seat, the piston skirt top is provided with a second welding fracture, and the second welding fracture is arranged corresponding to the first welding fracture.
In the implementation process, the surface of the piston skirt portion is provided with the piston pin boss, the top of the piston skirt portion is provided with the second welding fracture, the second welding fracture is arranged corresponding to the first welding fracture, and the piston head and the piston skirt portion are fixed in a positioning welding mode through the first welding fracture which is arranged in a matched mode.
Drawings
In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a double-sided guide piston provided in an embodiment of the present application;
FIG. 2 is a schematic structural view of a first weld fracture section provided in an embodiment of the present application;
FIG. 3 is a schematic diagram of a portion of an oil inlet hole according to an embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a second weld fracture section provided in accordance with an embodiment of the present disclosure;
FIG. 5 is a schematic view of a piston ring groove portion configuration provided by an embodiment of the present application;
fig. 6 is a schematic structural diagram of a deduplication hole portion provided in an embodiment of the present application.
In the figure: 100-a piston body; 110-a piston head; 111-cooling oil cavity; 112-concave holes; 120-a first weld fracture; 130-a piston skirt; 131-a cavity; 133-piston pin boss; 134-second weld fracture; 140-a combustion chamber; 150-piston ring groove; 200-cooling oil cavity cover; 210-a deduplication hole; 220-oil return hole; 230-oil inlet hole.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1-5, the present application provides a double-sided pilot piston, which includes a piston body 100 and a cooling oil cavity cover 200.
The piston body 100 comprises a piston head 110 and a piston skirt 130, the piston head 110 is fixed at the top of the piston skirt 130, the piston head 110 and the piston skirt 130 are arranged correspondingly, a cooling oil cavity 111 is cast inside the piston head 110, a piston ring groove 150 is arranged outside the piston head 110, a concave hole 112 is arranged inside the cooling oil cavity 111, the concave hole 112 and the cooling oil cavity 111 are arranged correspondingly, a cooling oil cavity cover 200 is fixed at the bottom of the piston head 110, the quantity of the head part material of the piston head 110 is reduced conveniently through the arranged concave hole 112, the mass of the head part of the piston head 110 is reduced conveniently, the load of an engine bearing is reduced, and the service life of the engine bearing is prolonged.
In some embodiments, piston head 110 is configured as a ring, the cross-sectional area of one end of piston head 110 is greater than the cross-sectional area of the other end of piston head 110, and the two ends of piston head 110 are configured differently to facilitate mounting with skirt 130.
In some embodiments, a cavity 131 is formed at the top of the piston skirt 130, and the piston head 110 is fixed at the top of the cavity 131, so that the fixing of the piston head 110 to the top of the piston skirt 130 is facilitated by the formed cavity 131.
In some embodiments, the number of the piston ring grooves 150 is several, and several piston ring grooves 150 are spaced on the surface of the piston head 110, so that the external piston ring can be conveniently positioned and installed by the several piston ring grooves 150.
In some embodiments, the combustion chamber 140 is disposed at one end of the piston head 110, the combustion chamber 140 is disposed between the ring grooves 150, and the combustion chamber 140 is disposed to facilitate combustion of fuel within the combustion chamber 140 during use of the piston head 110.
In some specific embodiments, a first weld separation 120 is provided in one end of the piston head 110, the first weld separation 120 is provided corresponding to the piston skirt 130, and the positioning and fixing of the bottom of the piston head 110 and the top of the piston skirt 130 are facilitated by the provision of the first weld separation 120.
In some specific embodiments, the contact portion of the piston head 110 and the cooling oil cavity cover 200 is provided with a weight-removing hole 210, and the weight-removing hole 210 is arranged to facilitate the reduction of the total amount of the piston material and the reduction of the piston mass.
In some specific embodiments, the surface of the cooling oil chamber cover 200 is provided with an oil inlet hole 230 and an oil return hole 220, and the oil is conveniently circulated and cooled by the oil inlet hole 230 and the oil return hole 220.
In some specific embodiments, a piston pin boss 133 is disposed on the surface of the piston skirt 130, a second welding fracture 134 is disposed at the top of the piston skirt 130, and the second welding fracture 134 is disposed corresponding to the first welding fracture 120, wherein the second welding fracture 134 is fixed to the first welding fracture 120 by welding, and the second welding fracture 134 is disposed to facilitate matching with the first welding fracture 120 to fix the piston head 110 to the piston skirt 130 by welding.
The working principle of the double-sided guide piston is as follows: when the piston is used, the piston body 100 comprises the piston head 110 and the piston skirt 130, the piston head 110 is fixed at the top of the piston skirt 130, the piston head 110 and the piston skirt 130 are arranged correspondingly, the cooling oil cavity 111 is cast inside the piston head 110, the piston ring groove 150 is arranged outside the piston head 110, the concave hole 112 is arranged inside the cooling oil cavity 111, the concave hole 112 and the cooling oil cavity 111 are arranged correspondingly, the cooling oil cavity cover 200 is fixed at the bottom of the piston head 110, through the arranged cooling oil cavity 111, the quantity of the head part material of the piston head 110 is reduced conveniently, the mass of the head part of the piston head 110 is reduced conveniently, the load of an engine bearing is reduced, and the service life of the engine bearing is prolonged.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (10)

1. A double-sided guide piston is characterized by comprising
The piston comprises a piston body (100), wherein the piston body (100) comprises a piston head (110) and a piston skirt portion (130), the piston head (110) is fixed at the top of the piston skirt portion (130), the piston head (110) and the piston skirt portion (130) are arranged correspondingly, a cooling oil cavity (111) is cast inside the piston head (110), a piston ring groove (150) is arranged outside the piston head (110), a concave hole (112) is arranged inside the cooling oil cavity (111), and the concave hole (112) and the cooling oil cavity (111) are arranged correspondingly;
the cooling oil cavity cover (200), the cooling oil cavity cover (200) is fixed with the bottom of the piston head (110).
2. A double-sided pilot piston according to claim 1, characterized in that the piston head (110) is provided as a ring, the cross-sectional area of one end of the piston head (110) being larger than the cross-sectional area of one end of the piston head (110).
3. A double-sided pilot piston according to claim 2, characterized in that the top of the skirt (130) is provided with a cavity (131), and the head (110) is fixed to the top of the cavity (131).
4. A double-sided pilot piston according to claim 3, wherein the plurality of piston ring grooves (150) are arranged, and the plurality of piston ring grooves (150) are distributed on the surface of the piston head (110) at intervals.
5. A double-sided pilot piston according to claim 4, characterized in that the piston head (110) is provided with combustion chambers (140) at one end, the combustion chambers (140) being provided between the ring grooves (150).
6. A double-sided pilot piston according to claim 5, characterized in that the piston head (110) is internally provided with a first weld interruption (120) at one end, the first weld interruption (120) being arranged in correspondence with the piston skirt (130).
7. A double-sided guide piston according to claim 6, characterized in that the contact area of the piston head (110) and the cooling oil cavity cover (200) is provided with a weight-reducing hole (210).
8. The double-sided guide piston of claim 7, wherein the surface of the cooling oil chamber cover (200) is provided with an oil inlet hole (230) and an oil return hole (220).
9. A double-sided pilot piston according to claim 8, characterized in that the piston skirt (130) is provided with guide surfaces (132) on its surface, the guide surfaces (132) being provided on both sides of the piston skirt (130), respectively.
10. A double-sided pilot piston according to claim 9, characterized in that the piston skirt (130) is provided with piston pin bosses (133) on its surface, and the top of the piston skirt (130) is provided with a second weld interruption (134), the second weld interruption (134) being arranged in correspondence with the first weld interruption (120).
CN202111152085.1A 2021-09-29 2021-09-29 Double-sided guide piston Pending CN113756981A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111152085.1A CN113756981A (en) 2021-09-29 2021-09-29 Double-sided guide piston

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111152085.1A CN113756981A (en) 2021-09-29 2021-09-29 Double-sided guide piston

Publications (1)

Publication Number Publication Date
CN113756981A true CN113756981A (en) 2021-12-07

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ID=78798319

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111152085.1A Pending CN113756981A (en) 2021-09-29 2021-09-29 Double-sided guide piston

Country Status (1)

Country Link
CN (1) CN113756981A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104832315A (en) * 2014-07-21 2015-08-12 北汽福田汽车股份有限公司 Engine piston and engine comprising same
CN206816381U (en) * 2017-04-27 2017-12-29 湖南江滨机器（集团）有限责任公司 A kind of internal combustion engine and its piston
CN107771245A (en) * 2015-04-20 2018-03-06 费德罗-莫格尔有限责任公司 Combustion chamber with complex shape and the piston of cooling chamber and its building method
CN109595092A (en) * 2018-12-27 2019-04-09 滨州东海龙活塞有限公司 A kind of method for supporting of piston and piston ring groove
CN209743057U (en) * 2019-01-18 2019-12-06 山东进化者新材料有限公司 Welded steel piston structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104832315A (en) * 2014-07-21 2015-08-12 北汽福田汽车股份有限公司 Engine piston and engine comprising same
CN107771245A (en) * 2015-04-20 2018-03-06 费德罗-莫格尔有限责任公司 Combustion chamber with complex shape and the piston of cooling chamber and its building method
CN206816381U (en) * 2017-04-27 2017-12-29 湖南江滨机器（集团）有限责任公司 A kind of internal combustion engine and its piston
CN109595092A (en) * 2018-12-27 2019-04-09 滨州东海龙活塞有限公司 A kind of method for supporting of piston and piston ring groove
CN209743057U (en) * 2019-01-18 2019-12-06 山东进化者新材料有限公司 Welded steel piston structure

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Application publication date: 20211207

RJ01 Rejection of invention patent application after publication