CN212225342U - Automobile engine valve seat ring - Google Patents

Abstract

The utility model provides an automobile engine valve seat circle belongs to engine valve seat circle technical field, this automobile engine valve seat circle, including the cylinder head, the upper end of cylinder head is dug there is the jack, the inner wall top-down of jack is equipped with the steel bushing in proper order, the seat circle is hit with bearing, the seat circle supports and leans on the steel bushing, seat circle and bearing hit fixed connection between the seat circle, the lower extreme of steel bushing is fixed with the bulge piece, the upper end of seat circle is dug the chisel have with bulge piece assorted recess, the bulge piece is located the recess, the jack internalization is pegged graft and is had valve guide, valve guide's upper surface is the arcwall face, the inner wall that bears the seat circle and hit is equipped with inside inclined plane, the arcwall face and the inclined plane phase-match that the seat circle inner wall was hit, make this device be difficult for leaking gas, the.

Description

Automobile engine valve seat ring

Technical Field

The utility model belongs to the technical field of the engine valve seat circle, concretely relates to automobile engine valve seat circle.

Background

The engine is the heart of the automobile and provides power for the walking of the automobile, and is related to the dynamic property, the economical efficiency and the environmental protection property of the automobile. The most basic principle of the engine is that the heat energy of gasoline (diesel oil) or natural gas is combusted in a sealed cylinder, so that the gas is expanded to drive a piston to do work, and then the gas is converted into mechanical energy required by the driving of an automobile. All structures of the engine serve for energy conversion, including valve seats mounted on the cylinder head. In the working process of the engine, the valve seat ring has the functions of sealing the valve and transferring the heat of the valve, and the design of the mounting structure of the valve seat ring can influence the power performance of the whole engine.

When the engine works, the valve guide pipe can impact the valve seat ring regularly, and the joint of the valve seat ring and the cylinder cover is easy to deform due to long-time impact, so that the air leakage of the valve is caused, and the power performance of the engine is greatly reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automobile engine valve seat circle aims at solving the engine during operation among the prior art, and the valve pipe can carry out the regularity striking to the valve seat circle, because long-time striking, the junction of valve seat circle and cylinder head takes place to warp easily to lead to the valve to leak gas, make the problem of the dynamic behavior greatly reduced of engine.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an automobile engine valve seat circle, includes the cylinder head, the upper end of cylinder head is dug there is the jack, the inner wall top-down of jack is equipped with steel bushing, connection seat circle and bearing and hits the seat circle in proper order, the connection seat circle supports and leans on the steel to sheathe in, fixed connection between connection seat circle and the bearing and hits the seat circle, the lower extreme of steel bushing is fixed with the bulge piece, the upper end of connection seat circle is dug have with bulge piece assorted recess, the bulge piece is located the recess, the valve pipe has been pegged graft in the jack activity, the upper surface of valve pipe is the arcwall face, the inner wall that bears and hits the seat circle is equipped with inside inclined plane, the arcwall face matches with the inclined plane that bears. The problem of during engine operation among the prior art, valve guide can carry out the regularity striking to the valve seat insert, because long-time striking, the junction of valve seat insert and cylinder head takes place to warp easily to lead to the valve to leak gas, make the dynamic property greatly reduced of engine is solved.

As an optimization of the utility model, the inner wall of the jack is all inlayed with the bearing and impacting seat ring to the connecting seat ring.

As an optimization of the present invention, the outer wall of the steel sleeve and the inner wall of the insertion hole are fused with each other.

As an optimization of the present invention, the inward inclined surface of the inner wall of the retainer ring is smoothly polished.

Preferably, the collision-bearing seat ring is sequentially composed of a graphite alloy carbide material layer and a QZ material layer from inside to outside.

As an optimization of the present invention, the bearing seat ring is located in the receptacle, and the lower surface of the bearing seat ring is lower than the lower surface of the cylinder head.

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

1. in this scheme, through the steel bushing that is provided with, when valve guide carries out the regularity striking repeatedly to connecting seat circle and bearing ring, connecting seat circle and bearing ring receive the effect of striking power and can extrude the jack, because the bearing ring supports and leans on the steel cover, the effectual original cylinder head that has replaced, the steel bushing has played the effect of bearing the striking power, simultaneously because the protrusion piece on the steel bushing is located the recess, the deformation that the cylinder head produced because of the extrusion with connecting seat circle and bearing ring junction has effectively been reduced, make the difficult gas leakage of this device, the seal of engine combustion chamber has been guaranteed, thereby the performance of engine has been improved.

2. Through the unsmooth inseparable cooperation that hits the seat circle of the bearing of valve guide pipe in this scheme for leakproofness in the engine combustion chamber is better, and simple structure, and the assembly precision is high.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a cross-sectional view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to the present invention;

fig. 3 is a schematic diagram of the working ring structure of the present invention.

In the figure: 1-a cylinder head; 2-a jack; 3-steel sleeve; 31-a protruding block; 4-a valve guide; 41-arc surface; 5-connecting the seat ring; 51-a groove; 6-a bearing race; a 7-graphite alloy carbide material layer; 8-QZ5 material layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, the present invention provides the following technical solutions:

the utility model provides an automobile engine valve seat circle, including cylinder head 1, the upper end of cylinder head 1 is opened and is dug jack 2, the inner wall top-down of jack 2 is equipped with steel bushing 3 in proper order, connecting seat circle 5 and bearing ring 6, connecting seat circle 5 supports and leans on steel bushing 3, connecting seat circle 5 and bearing ring 6 between fixed connection, the lower extreme of steel bushing 3 is fixed with protrusion piece 31, the upper end of connecting seat circle 5 is opened and is dug have with protrusion piece 31 assorted recess 51, protrusion piece 31 is located recess 51, jack 2 internalization is pegged graft there is valve guide 4, the upper surface of valve guide 4 is arcwall face 41, the inner wall that bears ring 6 is equipped with the interior inclined plane, arcwall face 41 and the inclined plane phase-match that bears ring 6 inner wall.

In the embodiment of the utility model, the cylinder cover 1 plays a role in sealing the cylinder to form a closed space, the steel sleeve 3 plays a role in supporting the connecting seat ring 5 and the bearing seat ring 6, the protruding block 31 and the groove 51 play a role in making the sealing performance of the jack 2 higher, when the valve guide 4 repeatedly and regularly impacts the connecting seat ring 5 and the bearing seat ring 6, the connecting seat ring 5 and the bearing seat ring 6 play a role in bearing the high-speed impact of the valve guide 4 and sealing the valve, the connecting seat ring 5 and the bearing seat ring 6 can extrude the jack 2 under the action of the impact force, because the bearing seat ring 6 is abutted against the steel sleeve 3, the original cylinder cover 1 is effectively replaced, the steel sleeve 3 plays a role in bearing the impact force, meanwhile, because the protruding block 31 on the steel sleeve 3 is positioned in the groove 51, the deformation of the connection part of the cylinder cover 1, the connecting seat ring 5 and the bearing seat ring 6 caused by extrusion is effectively reduced, the device is not easy to leak air, and the tightness of the combustion chamber of the engine is ensured, so that the performance of the engine is improved.

Specifically, referring to fig. 1, the connecting race 5 and the impact bearing race 6 are embedded in the inner wall of the insertion hole 2.

In this embodiment: so that the connecting race 5 and the retainer race 6 are easy to mount and dismount.

Specifically, the outer wall of the steel sleeve 3 is fused with the inner wall of the jack 2 (not shown).

In this embodiment: so that the steel sleeve 3 is fixed stably and is not easy to fall off.

Specifically, the surface of the inward inclined surface of the inner wall of the retainer 6 is subjected to a smooth grinding process (not shown).

In this embodiment: so that the valve guide 4 is more hermetically sealed when inserted into the insertion hole 2.

Specifically referring to fig. 3, the retainer 6 is composed of a graphite alloy carbide material layer 7 and a QZ5 material layer 8 from the inside to the outside.

In this embodiment: the heat conductivity of the bearing race 6 is good, and oil leakage is not easy to occur.

Specifically, the retainer 6 is located in the insertion hole 2, and a lower surface of the retainer 6 is lower than a lower surface (not shown) of the cylinder head 1.

In this embodiment: when the bearing seat ring 6 is impacted by the impact pressure, the acting force is dispersed on the inner wall of the jack 2 and the steel sleeve 3 and is not easy to extrude out of the jack 2.

The utility model discloses a theory of operation and use flow: this device is when valve guide 4 is to connecting seat circle 5 and the race 6 of running into the race that runs into the throne and is strikeed regularly when relapseing, connecting seat circle 5 and race 6 of running into the throne receive the effect of striking and can extrude 2 inner walls of jack, make cylinder head 1 damage easily, because race 6 of running into the throne supports and leans on steel bushing 3, make the striking distribute on 3 utmost point of steel bushing and 2 inner walls of jack, steel bushing 3 has played the effect of bearing the striking, simultaneously because the bulge 31 on the steel bushing 3 is located recess 51, effectively reduced cylinder head 1 and connecting seat circle 5 and the deformation that the 6 junctions of race of running into the throne produced because of the extrusion, make this device be difficult for leaking gas, the seal of engine combustion chamber has been guaranteed, thereby the performance of engine.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (6)

1. An automobile engine valve seat insert characterized in that: comprises a cylinder cover (1), the upper end of the cylinder cover (1) is provided with an insertion hole (2), the inner wall of the jack (2) is sequentially provided with a steel sleeve (3), a connecting seat ring (5) and a collision bearing seat ring (6) from top to bottom, the connecting seat ring (5) is abutted against the steel sleeve (3), the connecting seat ring (5) and the collision bearing seat ring (6) are fixedly connected, a convex block (31) is fixed at the lower end of the steel sleeve (3), a groove (51) matched with the convex block (31) is chiseled at the upper end of the connecting seat ring (5), the convex block (31) is positioned in the groove (51), the valve guide pipe (4) is movably inserted in the insertion hole (2), the upper surface of the valve guide pipe (4) is an arc surface (41), the inner wall of the bearing seat ring (6) is provided with an inward inclined surface, the arc-shaped surface (41) is matched with the inclined surface of the inner wall of the bearing seat ring (6).

2. An automotive engine valve seat insert as claimed in claim 1, characterized in that: the connecting seat ring (5) and the collision bearing seat ring (6) are embedded in the inner wall of the jack (2).

3. An automotive engine valve seat insert as claimed in claim 2, characterized in that: the outer wall of the steel sleeve (3) is fused with the inner wall of the jack (2).

4. An automotive engine valve seat insert according to claim 3, characterized in that: the surface of the inward inclined surface of the inner wall of the bearing seat ring (6) is subjected to smooth polishing treatment.

5. An automotive engine valve seat insert according to claim 4, characterized in that: the bearing race (6) is composed of a graphite alloy carbide material layer (7) and a QZ5 material layer (8) from inside to outside in sequence.

6. An automotive engine valve seat insert as claimed in claim 5, characterized in that: the bearing and collision seat ring (6) is positioned in the insertion hole (2), and the lower surface of the bearing and collision seat ring (6) is lower than the lower surface of the cylinder cover (1).

Images