CN215614896U

CN215614896U - Reinforcing rib structure

Info

Publication number: CN215614896U
Application number: CN202121183501.XU
Authority: CN
Inventors: 杨广豪; 何化; 徐雪松
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-01-25
Anticipated expiration: 2031-05-28

Abstract

The application discloses strengthening rib structure for improve the intensity of system core body and reduce the condition of sticking sand when the drawing of patterns at the mould in-process, the integral part that constitutes the strengthening rib in this application includes: the top of the first connecting end and the top of the second connecting end are arc-shaped and gradually increase from the top of the first connecting end to the top of the second connecting end, the first connecting end and the second connecting end are respectively connected with the outer surface of a target piece, the target piece is formed by casting through a casting die, and the position of the second connecting end is lower than that of the first connecting end.

Description

Reinforcing rib structure

Technical Field

The application relates to the field of foundry industry, in particular to a reinforcing rib structure

Background

In the structural design process of the casting body, the condition that the overhanging surface of the structural body is too large or the span is too large can occur, in the condition that the load which can be born by the connecting surface of the structural body is limited, a reinforcing rib is added on the common vertical surface of the two combined bodies so as to increase the strength of the connecting surface.

In the casting, the ribs are generally placed on the non-contact surface and should extend in a direction that follows the maximum stress and maximum of the product and the length of the product, with both ends meeting the outer wall of the casting or occupying only part of the length of the casting, in order to locally increase the rigidity of some part of the casting.

The reinforcing rib of the casting part in the prior art is of a vertical or trapezoidal structure, the reinforcing rib is flat and narrow, the bottom chamfer angle is small, the whole occupied space is large, and if the sand core with the structure as the molded surface is low in strength, the defects that the stripping process of the casting part is difficult, sand sticking is large, sand holes are easily formed and the like are caused.

SUMMERY OF THE UTILITY MODEL

The application provides a strengthening rib structure, the whole part that constitutes the strengthening rib includes:

the top of the first connecting end and the top of the second connecting end are arc-shaped and gradually increase from the top of the first connecting end to the top of the second connecting end, the first connecting end and the second connecting end are respectively connected with the outer surface of a target piece, the target piece is formed by casting through a casting die, and the position of the second connecting end is lower than that of the first connecting end.

Optionally, a round angle is formed at the joint of the second connecting end and the target piece.

Optionally, the middle parts of the top ends of the first connecting end and the second connecting end are concave.

Optionally, the concave part at the top of the first connecting end and the second connecting end is a smooth surface.

Optionally, the reinforcing rib is a preset material, and the preset material is formed by mixing molding materials according to a certain proportion.

Optionally, the surface of the reinforcing rib is provided with a refractory coating.

Optionally, the outer surface of the reinforcing rib is smooth.

Optionally, the reinforcing bar is not detachable from the target part.

Optionally, the target part is a sand core.

According to the technical scheme, in the casting process of the target part, the tops of the two ends of the reinforcing ribs are arc-shaped, and the tops of the first connecting ends are gradually increased to the tops of the second connecting ends, so that the corresponding sand core strength of the molding surface is increased, and the condition that sand is easily adhered during stripping is reduced.

Drawings

FIG. 1 is a schematic structural view of an embodiment of a reinforced rib structure applied to a sand core of an engine block in the application;

FIG. 2 is an enlarged schematic view of a reinforcement rib structure in the engine block sand core;

FIG. 3 is a schematic partial cross-sectional view of an engine block sand core.

Detailed Description

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. 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 addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.

The technical solutions in the present application will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, not all 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 application.

The present casting part strengthening rib is vertical or trapezium structure to this kind of strengthening rib is flat and narrow, and the chamfer of bottom is little, and whole occupation space is big, if the psammitolite intensity of making the profile with this structure is low, causes casting part drawing of patterns process difficulty, the sand sticking is many, and based on this, this application embodiment provides a strengthening rib structure for improve the intensity of system core body and reduce the condition of sand sticking when the drawing of patterns at the mould in-process.

Referring to fig. 1 to 3, an embodiment of a reinforcement rib structure in the present application includes:

the connecting structure comprises a first connecting end 1, a second connecting end 2 and a connecting middle part 3, wherein the tops of the first connecting end 1 and the second connecting end 2 are arc-shaped, the tops of the first connecting end 1 and the second connecting end 2 are gradually increased from the top of the first connecting end 1 to the top of the second connecting end 2, the first connecting end 1 and the second connecting end 2 are respectively connected with the outer surface of a target piece, the target piece is formed by casting through a casting die, and the position of the second connecting end is lower than that of the first connecting end.

In the reinforced rib structure is applicable to the psammitolite structure of different casting parts in this application, for example the metal casting part that the profile requirements are high such as engine cylinder body psammitolite, engine cylinder lid psammitolite, gearbox psammitolite, for the convenience of further understanding the use of this strengthening rib, for example engine cylinder body psammitolite through the target piece in this application embodiment, exemplify the application of strengthening rib.

Because the engine has complicated inside and outside shape structure, and need highly accurate size, the casting degree of difficulty is big, consequently, in order to improve the manufacturing process of engine casting, in the embodiment of the application, improve the intensity of system core body through the strengthening rib structure, there is relative surface to be connected in the both ends of strengthening rib respectively with the engine cylinder body psammitolite, when engine cylinder body psammitolite is vertical to be placed, first link 1 is located upper portion, second link 2 is located the lower part, this kind of big-end-up's psammitolite structure can make difficult the sticky sand when drawing, the length and the various sizes of strengthening rib can set up according to the size of target piece in the practical application process, concrete here does not do the injecing.

Specifically, a fillet is formed at the joint of the second connecting end 2 and the target part; the reinforcing bar is not detachable from the target part.

In the embodiment of the application, the second connecting end 2 of the reinforcing rib and the surface of the connection part of the sand core of the engine cylinder body form a round angle, and the round angle is large, so that the sand hiding condition caused by the small round angle at the bottom can be avoided during stripping, and it needs to be explained that the reinforcing rib can be connected with a target part in a detachable connection mode in other core making processes, and the concrete position is not limited.

Specifically, the middle parts of the top ends of the first connecting end 1 and the second connecting end 2 are concave; the concave parts at the tops of the first connecting end 1 and the second connecting end 2 are smooth surfaces.

In order to make the strengthening rib support effect in the target piece better, the indent that the radian was predetermine in the top middle part at this strengthening rib both ends is equipped with is used for matcing the support engine cylinder body psammitolite, and its smooth surface energy makes laminating effect between them better.

Specifically, the reinforcing ribs are made of preset materials, and the preset materials are formed by mixing molding materials according to a certain proportion; the surface of the reinforcing rib is provided with a refractory coating; the outer surface of the reinforcing rib is smooth.

The sand core is generally formed by mixing casting sand, a binder, auxiliary materials and other molding materials according to a certain proportion, so that the reinforcing rib is consistent with the manufacturing material of a target part, in order to prolong the service life of the reinforcing rib, a refractory coating is arranged on the outer surface of the reinforcing rib, and the outer surface of the reinforcing rib needs to be smooth so as to meet the high requirement of the inner surface of a casting on the smoothness.

It should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.

Claims

1. A reinforcing bar structure, characterized in that an integral part constituting a reinforcing bar comprises: the top of the first connecting end and the top of the second connecting end are arc-shaped and gradually increase from the top of the first connecting end to the top of the second connecting end, the first connecting end and the second connecting end are respectively connected with the outer surface of a target piece, the target piece is formed by casting through a casting die, and the position of the second connecting end is lower than that of the first connecting end.

2. A reinforcing bar structure according to claim 1, wherein the junction of the second connecting end and the target member is radiused.

3. A reinforcing bar structure according to claim 1, wherein the top ends of the first and second connecting ends are recessed at their midpoints.

4. A reinforcing bar structure according to claim 3, wherein the concave depressions at the top of the first and second link ends are smooth surfaces.

5. A reinforcing bar structure according to claim 1, wherein the reinforcing bars are of a predetermined material which is formed by mixing a moulding material in a predetermined proportion.

6. A reinforcing bar structure according to claim 5, wherein the surface of the reinforcing bar is provided with a refractory coating.

7. A reinforcing bar structure according to any one of claims 1 to 6, wherein the outer surface of the reinforcing bar is smooth.

8. A reinforcing bar structure according to any one of claims 1 to 6, wherein the reinforcing bar is non-detachable from the target part.

9. The reinforcing bar structure according to any one of claims 1 to 6, wherein the target member is a sand core.