CN219242058U

CN219242058U - High-strength piston for internal combustion engine

Info

Publication number: CN219242058U
Application number: CN202223386949.9U
Authority: CN
Inventors: 金湘翔; 金作宪
Original assignee: Jiangsu Kaihai Precision Piston Co ltd
Current assignee: Jiangsu Kaihai Precision Piston Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-06-23
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a high-strength internal combustion engine piston, in particular to the technical field of internal combustion engine pistons, which comprises an inner piston body, wherein an outer piston body is movably sleeved on the outer side of the inner piston body, a groove body is formed in the middle of the bottom end of the inner piston body, piston pins are movably arranged at the bottoms of the inner piston body and the outer piston body, and clamping sleeves are fixedly clamped at the middle of the top end of the inner piston body.

Description

High-strength piston for internal combustion engine

Technical Field

The utility model relates to the technical field of pistons of internal combustion engines, in particular to a high-strength piston of an internal combustion engine.

Background

An internal combustion engine is a power machine, which is a heat engine that directly converts heat energy emitted from fuel burned in the machine into power, and is called a piston type internal combustion engine. The piston type internal combustion engine is most commonly in a reciprocating piston type, the piston type internal combustion engine mixes fuel and air, the fuel and the air are combusted in a cylinder of the piston type internal combustion engine, the released heat energy enables high-temperature and high-pressure fuel gas to be generated in the cylinder, the fuel gas expands to push a piston to do work, and then mechanical work is output through a crank-link mechanism or other mechanisms to drive driven machinery to work;

the piston in the piston type internal combustion engine is an important part, the basic structure of the piston can be divided into a top part, a head part and a skirt part, wherein the top part of the piston is a main part forming a combustion chamber, the piston structure of the traditional internal combustion engine is mostly integrated, when the outer surface is worn, the piston needs to be scrapped and replaced integrally, the use cost of the piston is greatly increased, and the overall suitability of the piston is lower.

Disclosure of Invention

In order to solve the problems that most of the piston structures of the traditional internal combustion engine are integrated, when the outer surface is worn, the whole piston structure needs to be scrapped and replaced, and the use cost of the piston is greatly increased; the utility model aims to provide a high-strength piston for an internal combustion engine.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high strength internal-combustion engine piston, includes the piston inner body, the outside movable sleeve of body is equipped with the piston outer body in the piston, the piston inner body is magnesium aluminum alloy material with the piston outer body, the cell body has been seted up at the bottom middle part of body in the piston, the bottom activity of body in the piston, the piston outer body is equipped with the wrist pin, the top middle part fixing clip of body is equipped with the cutting ferrule in the piston, the interior lower wall middle part fixed mounting of the piston outer body has the interior screwed pipe that uses with the cutting ferrule cooperation, interior screwed pipe movable joint is in the cutting ferrule, the interior upper wall middle part of body is equipped with the gim peg in the piston, gim peg screw thread installation is in the screwed pipe.

Preferably, two clamping grooves which are symmetrically distributed are formed in the bottoms of the inner piston body and the outer piston body, and clamping sleeve heads are movably clamped between the corresponding clamping grooves in the inner piston body and the outer piston body; the outer sides of the clamping grooves in the outer body of the piston are respectively provided with a first sinking groove, and the head parts of the clamping sleeve heads are movably clamped in the corresponding first sinking grooves; the piston pin is movably clamped at the middle parts of the two clamping sleeve heads; the outer end of the clamping sleeve head is provided with a second sinking groove, and the head of the piston pin is movably clamped in the corresponding second sinking groove.

Preferably, the end part of the piston pin is provided with a fixed screw pin, the end part of the piston pin is provided with a thread groove matched with the fixed screw pin, and the end part of the fixed screw pin is installed in the thread groove in a thread way; the head of the fixed screw pin is movably clamped in the corresponding second sinking groove.

Preferably, the outer wall integrated into one piece of body has the location sand grip in the piston, the positioning groove that cooperates the use with the location sand grip is seted up to the inner wall of the outer body of piston, and the movable joint of location sand grip is in the positioning groove that corresponds.

Compared with the prior art, the utility model has the beneficial effects that:

1. the piston is divided into the inner piston body and the outer piston body, the outer piston body and the inner piston body are accurately sleeved through positioning, the outer piston body is convenient to detach, replace and overhaul independently, the whole maintenance is not needed, the use cost of the piston is effectively reduced, the outer piston body with the proper outer diameter can be selected according to the inner diameter of the piston cylinder body and is arranged on the outer side of the inner piston body, so that the piston cylinder bodies with different inner diameters can be used in a matching mode, and the overall suitability and the use effect of the piston are improved.

2. Through establishing body in the piston, the outer body of piston as magnadure material, effectively improved the bulk strength of piston, promoted the whole result of use of piston.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model.

Fig. 2 is a schematic diagram of the structural connection after the splitting of the present utility model.

Fig. 3 is an enlarged view of the utility model at a in fig. 2.

Fig. 4 is an enlarged view of the present utility model at B in fig. 2.

Fig. 5 is a schematic diagram of another structural connection after detachment of the present utility model.

In the figure: 1. a piston inner body; 2. a piston outer body; 3. a piston pin; 4. a cutting sleeve; 5. an inner coil; 6. a fixing bolt; 7. fixing the threaded pin; 701. a thread groove; 8. clamping and fixing the sleeve head; 9. positioning convex strips; 901. a positioning groove; 101. a clamping groove; 102. a first sink; 103. and a second sink.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples: as shown in fig. 1-5, the utility model provides a high-strength internal combustion engine piston, which comprises a piston inner body 1, wherein a piston outer body 2 is movably sleeved on the outer side of the piston inner body 1, the piston inner body 1 and the piston outer body 2 are made of magnesium aluminum alloy materials, and the overall strength of the piston is effectively improved and the overall use effect of the piston is improved by setting the piston inner body 1 and the piston outer body 2 to be made of magnesium aluminum alloy materials; the outer wall of the piston inner body 1 is integrally formed with the positioning convex strips 9, the inner wall of the piston outer body 2 is provided with the positioning grooves 901 matched with the positioning convex strips 9, the positioning convex strips 9 are movably clamped in the corresponding positioning grooves 901, the positioning grooves 901 are matched with the positioning convex strips 9, the positioning convex strips 9 are movably clamped in the corresponding positioning grooves 901, the piston outer body 2 and the piston inner body 1 are positioned and accurately sleeved, so that the piston outer body 2 is convenient to be detached, replaced and overhauled independently, the whole maintenance is not needed, the use cost of the piston is effectively reduced, and the piston outer body 2 with the proper outer diameter size can be selected according to the inner diameter size of a piston cylinder body so as to be installed on the outer side of the piston inner body 1 so as to be matched with the use of piston cylinder bodies with different inner diameters, and the overall suitability and use effect of the piston are improved;

the piston is characterized in that a groove body is formed in the middle of the bottom end of the piston inner body 1, a piston pin 3 is movably arranged at the bottoms of the piston inner body 1 and the piston outer body 2, the piston pin 3 is used for connecting a connecting rod with the piston inner body 1, a clamping sleeve 4 is fixedly clamped at the middle of the top end of the piston inner body 1, an inner screw 5 matched with the clamping sleeve 4 is fixedly arranged at the middle of the inner lower wall of the piston outer body 2, the inner screw 5 is movably clamped in the clamping sleeve 4, a fixing bolt 6 is arranged at the middle of the inner upper wall of the piston inner body 1, the fixing bolt 6 is arranged in the inner screw 5 in a threaded manner, when the piston outer body 2 is accurately sleeved on the outer side of the piston inner body 1, the inner screw 5 is movably clamped in the clamping sleeve 4, then the fixing bolt 6 is screwed in the inner screw 5 in a threaded manner, and the inner screw 5 is fixed, so that the outer piston body 2 and the piston inner body 1 are fixed.

Two clamping grooves 101 which are symmetrically distributed are formed in the bottoms of the inner piston body 1 and the outer piston body 2, clamping sleeve heads 8 are movably clamped between the corresponding clamping grooves 101 in the inner piston body 1 and the outer piston body 2, and the clamping sleeve heads 8 are movably clamped in the corresponding clamping grooves 101 to position the skirt portions of the inner piston body 1 and the outer piston body 2, so that the connection stability of the inner piston body 1 and the outer piston body 2 is improved.

The outer sides of the clamping grooves 101 in the outer piston body 2 are respectively provided with a first sinking groove 102, the head of the clamping sleeve head 8 is movably clamped in the corresponding first sinking groove 102, and the first sinking groove 102 is used for hiding the head of the clamping sleeve head 8.

The piston pin 3 is movably clamped at the middle parts of the two clamping sleeve heads 8.

The outer end of the clamping sleeve head 8 is provided with a second sinking groove 103, the head of the piston pin 3 is movably clamped in the corresponding second sinking groove 103, and the head of the piston pin 3 is hidden by the second sinking groove 103.

The end of the piston pin 3 is provided with a fixing screw pin 7, the end of the piston pin 3 is provided with a thread groove 701 matched with the fixing screw pin 7, the end of the fixing screw pin 7 is arranged in the thread groove 701 in a threaded manner, and the fixing screw pin 7 is arranged in the thread groove 701 in a threaded manner to fix the piston pin 3.

The head of the fixing screw pin 7 is movably clamped in the corresponding second sinking groove 103, and the second sinking groove 103 is used for hiding the head of the fixing screw pin 7.

Working principle: when the piston cylinder is used, the outer piston body 2 with a proper outer diameter is selected to be sleeved on the outer side of the inner piston body 1 according to the inner diameter of the piston cylinder, the positioning convex strips 9 are movably clamped in the corresponding positioning grooves 901, the outer piston body 2 and the inner piston body 1 are positioned and accurately sleeved, meanwhile, the inner screw tube 5 is movably clamped in the clamping sleeve 4, then the fixing bolt 6 is screwed and installed in the inner screw tube 5, and the inner screw tube 5 is fixed, so that the outer piston body 2 and the inner piston body 1 are fixed;

then, the clamping sleeve head 8 is movably clamped in the corresponding clamping groove 101, the head of the clamping sleeve head 8 is movably clamped in the corresponding first sinking groove 102, the head of the clamping sleeve head 8 is hidden, positioning is carried out on the skirt parts of the inner piston body 1 and the outer piston body 2, and the connection stability of the inner piston body 1 and the outer piston body 2 is improved;

then, the head of the connecting rod is placed in a groove body at the bottom end of the piston inner body 1, then, the piston pin 3 is movably clamped in the middle parts of the two clamping sleeve heads 8, the piston pin 3 simultaneously penetrates through the head of the connecting rod to connect the head of the connecting rod and the piston inner body 1, the head of the piston pin 3 is movably clamped in the corresponding second sinking groove 103 to conceal the head of the piston pin 3, then, the fixed screw pin 7 is arranged at the end part of the piston pin 3 in a threaded manner until the head of the fixed screw pin 7 is movably clamped in the corresponding second sinking groove 103 to conceal the head of the fixed screw pin 7;

the piston is divided into the inner piston body 1 and the outer piston body 2, the outer piston body 2 and the inner piston body 1 are accurately sleeved through positioning, the outer piston body 2 is convenient to detach, replace and overhaul independently, the whole maintenance is not needed, the use cost of the piston is effectively reduced, the outer piston body 2 with the proper outer diameter can be selected according to the inner diameter of the piston cylinder body, and the outer piston body 2 is arranged on the outer side of the inner piston body 1 so as to adapt to the use of the piston cylinders with different inner diameters, and therefore the overall suitability and the use effect of the piston are improved.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A high strength internal combustion engine piston comprising an inner piston body (1), characterized in that: the piston is characterized in that the piston outer body (2) is movably sleeved on the outer side of the piston inner body (1), the piston inner body (1) and the piston outer body (2) are made of magnesium aluminum alloy materials, a groove body is formed in the middle of the bottom end of the piston inner body (1), a piston pin (3) is movably arranged at the bottom of the piston inner body (1) and the bottom of the piston outer body (2), a clamping sleeve (4) is fixedly clamped at the middle of the top end of the piston inner body (1), an inner screw tube (5) matched with the clamping sleeve (4) is fixedly installed at the middle of the inner lower wall of the piston outer body (2), the inner screw tube (5) is movably clamped in the clamping sleeve (4), a fixing bolt (6) is arranged at the middle of the inner upper wall of the piston inner body (1), and the fixing bolt (6) is installed in the inner screw tube (5) in a threaded mode.

2. A high strength internal combustion engine piston as set forth in claim 1 wherein: two clamping grooves (101) which are symmetrically distributed are formed in the bottoms of the inner piston body (1) and the outer piston body (2), and clamping sleeve heads (8) are movably clamped between the corresponding clamping grooves (101) in the inner piston body (1) and the outer piston body (2).

3. A high strength internal combustion engine piston as set forth in claim 2 wherein: the outer sides of the clamping grooves (101) in the outer piston body (2) are respectively provided with a first sinking groove (102), and the heads of the clamping sleeve heads (8) are movably clamped in the corresponding first sinking grooves (102).

4. A high strength internal combustion engine piston according to claim 3, wherein: the piston pin (3) is movably clamped at the middle parts of the two clamping sleeve heads (8).

5. A high strength internal combustion engine piston as set forth in claim 4 wherein: the outer end of the clamping sleeve head (8) is provided with a second sinking groove (103), and the head of the piston pin (3) is movably clamped in the corresponding second sinking groove (103).

6. A high strength internal combustion engine piston as set forth in claim 5 wherein: the end part of the piston pin (3) is provided with a fixed screw pin (7), the end part of the piston pin (3) is provided with a thread groove (701) matched with the fixed screw pin (7), and the end part of the fixed screw pin (7) is installed in the thread groove (701) in a threaded manner.

7. A high strength internal combustion engine piston as set forth in claim 6 wherein: the head of the fixed screw pin (7) is movably clamped in the corresponding second sinking groove (103).

8. A high strength internal combustion engine piston as set forth in claim 1 wherein: the outer wall integrated into one piece of body (1) has location sand grip (9) in the piston, positioning groove (901) that uses with location sand grip (9) cooperation have been seted up to the inner wall of the outer body of piston (2), and location sand grip (9) activity joint is in corresponding positioning groove (901).