CN215521081U

CN215521081U - Piston

Info

Publication number: CN215521081U
Application number: CN202122108301.4U
Authority: CN
Inventors: 王立杰; 肖伟芳
Original assignee: Shandong Neymar Power Co ltd
Current assignee: Shandong Neymar Power Co ltd
Priority date: 2021-09-02
Filing date: 2021-09-02
Publication date: 2022-01-14
Anticipated expiration: 2031-09-02

Abstract

The utility model discloses a piston, which comprises a piston head, a piston top, piston ring grooves, oil return holes, a piston skirt, a piston pin seat, a piston cavity and a piston pin hole, wherein the piston skirt is arranged below the bottom of the piston head; the piston has the advantages that by improving the structure of the combustion chamber, the high compression ratio realizes lower oil consumption, better emission and better starting performance; moreover, on the basis of ensuring the strength, the structure is simpler, and the reliability is better; meanwhile, the cooling mode of the piston is optimized, and the cooling effect is better.

Description

Piston

Technical Field

The utility model relates to the technical field of pistons, in particular to a piston.

Background

The piston is a machine part which reciprocates in the cylinder body; the piston is mainly applied to an oil cylinder and a cylinder movement execution component and is a movement component with frequent movement and high technical requirement; the main function of the piston is to bear the combustion pressure in the cylinder and transmit the force to the crankshaft through the piston pin and the connecting rod, and the piston, the cylinder cover and the cylinder wall jointly form a combustion chamber.

In the piston in the prior art, when the piston works, the compression height of part of the piston is not satisfactory, the heat dissipation effect of the piston is poor, and the situation that the piston sticks to a cylinder occasionally occurs, so that the piston is necessary to design.

SUMMERY OF THE UTILITY MODEL

The utility model solves the problem of providing a piston, which has lower oil consumption, better discharge and better starting performance by improving the structure of a combustion chamber and realizing high compression ratio; moreover, on the basis of ensuring the strength, the structure is simpler, and the reliability is better; meanwhile, the cooling mode of the piston is optimized, and the cooling effect is better.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a piston, includes piston head, piston crown, piston ring groove, oil gallery, piston skirt, piston pin seat, piston cavity and piston pin hole, the bottom below of piston head is provided with the piston skirt, the piston cavity has been seted up to the inside central authorities of piston head and piston skirt, the piston crown has been seted up to the top end face of piston head, three piston ring groove has been seted up to the bottom outer wall of piston head, and keeps away from the terminal surface both sides of piston head piston ring groove and all seted up two oil galleries, the inner wall both sides of piston skirt all are provided with the piston pin seat, the oil groove has been seted up to the inside of piston skirt.

As a further scheme of the utility model: the piston is an aluminum material member, and the heat treatment hardness is HB 95-130.

As a further scheme of the utility model: and one end of the outside of the oil return hole penetrates through the piston skirt, and one end of the inside of the oil return hole is communicated with the inner cavity of the piston.

As a further scheme of the utility model: the included angle between the oil return holes is 180 degrees.

As a further scheme of the utility model: and a piston ring is sleeved and mounted in the end face of the piston ring groove.

As a further scheme of the utility model: and a piston pin hole is formed in the center of the end face of the piston pin seat, and two ends of the piston pin hole penetrate through the piston skirt.

The utility model has the beneficial effects that: according to the piston, proper aluminum is selected as a processing material, so that on the basis of ensuring the strength, the structure is simpler, the reliability is better, and the requirement of high cylinder diameter compression is effectively met; when the combustion chamber is used, the structure of the combustion chamber is more compact through the piston top at the top of the piston head, the piston top has a good heat dissipation area, heat is conveniently transferred to the piston head, and then the heat is transferred to the cylinder through the piston head to dissipate the heat, the structure of the combustion chamber is improved through the piston top, the oil consumption is lower due to high compression ratio, the emission is better, the starting performance is better, the cooling mode of the piston is optimized, and the cooling effect is better; the piston ring is sleeved and mounted on the outer side of the piston ring groove, so that the sealing effect can be improved, and engine oil can be prevented from entering a combustion chamber; oil can flow back to the inner part of the piston cavity through the oil return hole formed in the piston ring groove, so that oil return is facilitated; the piston shaft is convenient to install through the piston pin seat and the piston pin hole inside the piston inner cavity, so that the piston skirt is connected with the crankshaft, transmission is convenient, oil is convenient to flow through the oil guide groove formed inside the piston skirt, the combustion condition is effectively improved, and the effects of energy conservation and emission reduction are achieved.

Drawings

FIG. 1 is an overall front view of the present invention;

FIG. 2 is an overall side view of the present invention;

FIG. 3 is an overall front cross-sectional view of the present invention;

FIG. 4 is an overall side cross-sectional view of the present invention;

illustration of the drawings: 1. a piston head; 2. a piston top; 3. a piston ring groove; 4. an oil return hole; 5. a piston skirt; 6. a piston pin boss; 7. a piston inner cavity; 8. a piston pin bore.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Specific examples are given below.

Referring to fig. 1-4, a piston comprises a piston head 1, a piston top 2, a piston ring groove 3, an oil return hole 4, a piston skirt 5, a piston pin boss 6, a piston inner cavity 7 and a piston pin hole 8, wherein the piston is an aluminum material member, the heat treatment hardness is HB95-130, and on the basis of ensuring the strength, the structure is simpler and the reliability is better; the weight is light, and the wear-resistant use effect is good; a piston skirt 5 is arranged below the bottom of a piston head 1, piston inner cavities 7 are formed in the piston head 1 and the inner center of the piston skirt 5, a piston top 2 is formed in the top end face of the piston head 1, three piston ring grooves 3 are formed in the outer wall of the bottom of the piston head 1, two oil return holes 4 are formed in two sides of the end face, far away from the piston head 1, of each piston ring groove 3, one outer end of each oil return hole 4 penetrates through the piston skirt 5, one inner end of each oil return hole 4 is communicated with the piston inner cavity 7, oil can flow back to the inner portion of the piston inner cavity 7 through the oil return holes 4, the included angle between the oil return holes 4 is 180 degrees, and oil return is facilitated; a piston ring is sleeved and mounted in the end face of the piston ring groove 3, so that a good sealing effect is achieved; preventing high-temperature and high-pressure gas from channeling into a crankcase; piston pin seat 6 has all been provided with in the inner wall both sides of piston skirt 5, and piston pin hole 8 has been seted up to piston pin seat 6's terminal surface central authorities, and piston skirt 5 is run through at the both ends of piston pin hole 8, is convenient for connect the piston pin and installs in piston skirt 5's inside, and piston skirt 5's inside has been seted up and has been led the oil groove.

The working principle of the utility model is as follows: when the combustion chamber is used, the structure of the combustion chamber is more compact through the piston top 2 at the top of the piston head 1, and the piston top 2 has a good heat dissipation area, so that heat can be conveniently transferred to the piston head 1 and then transferred to the cylinder through the piston head 1 for heat dissipation; the piston ring is sleeved and mounted on the outer side of the piston ring groove 3, so that the sealing effect can be improved, and engine oil can be prevented from entering a combustion chamber; oil can flow back to the inner part of the piston inner cavity 7 through the oil return hole 4 formed in the piston ring groove 3, so that oil return is facilitated; piston pin seat 6 and piston pin hole 8 through piston inner chamber 7 inside are convenient for install the piston shaft to make piston skirt 5 be connected with the bent axle, conveniently transmit, through the oil groove of leading of 5 inside setups of piston skirt, make things convenient for fluid to flow.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a piston, its characterized in that, includes piston head (1), piston crown (2), piston ring groove (3), oil gallery (4), piston skirt (5), piston pin seat (6), piston cavity (7) and piston pin hole (8), the bottom below of piston head (1) is provided with piston skirt (5), piston cavity (7) have been seted up to the inside central authorities of piston head (1) and piston skirt (5), piston crown (2) have been seted up to the top end face of piston head (1), three piston ring groove (3) have been seted up to the bottom outer wall of piston head (1), and keep away from the terminal surface both sides of piston head (1) piston ring groove (3) and all seted up two oil gallery (4), the inner wall both sides of piston skirt (5) all are provided with piston pin seat (6), the oil groove has been seted up to the inside of piston skirt (5).

2. The piston of claim 1 wherein said piston is an aluminum material member.

3. The piston according to claim 1, characterized in that the outer end of the oil return hole (4) penetrates the piston skirt (5), and the inner end of the oil return hole (4) is communicated with the piston inner cavity (7).

4. Piston according to claim 1, characterized in that the angle between the oil return holes (4) is 180 °.

5. Piston according to claim 1, characterized in that the piston ring is mounted with a piston ring on the inside of the end face of the piston ring groove (3).

6. The piston of claim 1, characterized in that the piston pin hole (8) is formed in the center of the end surface of the piston pin boss (6), and both ends of the piston pin hole (8) penetrate through the piston skirt (5).