CN211522844U - Self-lubricating sliding rubber support - Google Patents

Abstract

The utility model relates to the technical field of sliding supports, in particular to a self-lubricating sliding rubber support, which comprises a rubber main body and a combined structure at least covering the friction surface of the rubber main body; the combined structure comprises a metal net and a modified polytetrafluoroethylene main body coated with the metal net. The utility model discloses in, for original holistic polytetrafluoroethylene structure, composite structure's setting has improved sliding support sliding friction part's wearability, has also played holistic reinforcing effect to the rubber subject who realizes the buffering simultaneously to improved whole sliding support to high-speed, high bearing, high coefficient of friction's bearing capacity, prolonged life, realized more reliable self-lubricating. After the metal mesh is processed, the modified polytetrafluoroethylene structure can be rolled by a rolling mill, and the rolled combined structure is sintered under the protection of nitrogen.

Description

Self-lubricating sliding rubber support

Technical Field

The utility model relates to a sliding support technical field, concretely relates to self-lubricating sliding rubber support.

Background

At present, Polytetrafluoroethylene (PTFE) is mostly adopted as a main structure of a sliding support which is conventionally used, and the bearing capacity of the PTFE is sharply reduced when the use temperature of the PTFE exceeds 30 ℃, and the PTFE can not be used any more when the use temperature of the PTFE is lower than-35 ℃. PTFE becomes powder after sliding for 10km under the test conditions of v =2mm/s and p =30N/mm2, so that the PTFE is only suitable for being used as a sliding material under the conditions of low speed, low bearing, low requirement on friction coefficient, no requirement on service life and oil lubrication.

In view of the above problems, the inventor of the present invention has made active research and innovation based on the practical experience and professional knowledge of engineering application of such products for many years, and together with the application of theory, to create a self-lubricating sliding rubber support, which is more practical.

SUMMERY OF THE UTILITY MODEL

The utility model discloses in provide a self-lubricating slip rubber support, the effectual problem of having overcome among the background art.

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

a self-lubricating sliding rubber bearing comprises a rubber main body and a combined structure at least covering a friction surface of the rubber main body;

wherein the composite structure comprises at least one layer of metal mesh and a modified polytetrafluoroethylene main body coated with the metal mesh.

Further, the metal net is of a copper net structure.

Further, the metal mesh is parallel to the rubbing face.

Further, the metal mesh completely covers the friction surface after being projected onto the friction surface.

Further, the metal mesh comprises only one layer, or is a multi-layer assembly.

Further, when the metal net is a multi-layer assembly, the layers are fixedly connected with each other, or only stacked in rows.

Further, the rubber main body comprises 3N friction surfaces, the friction surfaces are rectangular, every 3 friction surfaces are sequentially connected end to form a protruding structure, or sequentially connected end to form a recessed structure, and N is a positive integer.

Further, the cross section of the convex structure or the concave structure is rectangular, or the cross section is isosceles trapezoid.

Through the technical scheme, the beneficial effects of the utility model are that:

the utility model discloses in, for original holistic polytetrafluoroethylene structure, composite structure's setting has improved sliding support sliding friction part's wearability, whole reinforcing action has also been played to the rubber main part that realizes the buffering simultaneously, thereby improved whole sliding support to high-speed, high bearing, high coefficient of friction's bearing capacity, prolonged life, more reliable self-lubricating has been realized, the metal mesh is the processing completion back accessible rolling mill roll press modified polytetrafluoroethylene structure, the composite structure after accomplishing the roll press is sintered under the protection of nitrogen gas can.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic view of the combination of a rubber body and a composite structure;

FIG. 2 is a schematic view of the rubber body and the composite structure, and the composite structure itself, in isolation;

FIG. 3 is a schematic view showing that only one layer of metal mesh is provided for each layer of metal mesh, and a plurality of layers of metal meshes are provided;

FIG. 4 is a schematic view of multiple layers of metal nets arranged on each layer of metal net;

FIG. 5 is a schematic view of a self-lubricating sliding rubber mount being a plate-type sliding mount;

FIG. 6 is a schematic view of a self-lubricating sliding rubber bearing as a sliding bearing for an expansion joint;

FIGS. 7 and 8 are schematic views showing the use of the sliding rubber mount of FIG. 6;

FIG. 9 is another schematic view of the self-lubricating sliding rubber bearing as a sliding bearing for an expansion joint;

FIG. 10 is a schematic view of the use of the sliding rubber mount of FIG. 9;

FIG. 11 is a schematic cross-sectional view of the sliding rubber mount when the cross-section of the protrusion structure is rectangular and N is 2;

FIG. 12 is a schematic sectional view of the sliding rubber mount in which the recessed structure has a rectangular cross section and N is 2;

FIG. 13 is a schematic cross-sectional view of the sliding rubber support with the cross-section of the convex structure being an isosceles trapezoid and N being 1;

FIG. 14 is a schematic cross-sectional view of the sliding rubber support with the recessed structure having an isosceles trapezoid cross-section and N being 1;

reference numerals: rubber body 1, friction surface 11, composite structure 2, metal mesh 21, wear-resisting body 22, roof beam body 3.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are the directions or positional relationships indicated on the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may include, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. This embodiment is written in a progressive manner.

A self-lubricating sliding rubber bearing comprises a rubber main body 1 and a combined structure 2 at least covering a friction surface 11 of the rubber main body 1; wherein, the composite structure 2 comprises at least one layer of metal mesh 21 and a modified polytetrafluoroethylene main body 22 coated with the metal mesh.

As shown in fig. 1 and 2, the utility model discloses in, for original holistic polytetrafluoroethylene structure, composite structure 2's setting has improved sliding support sliding friction part's wearability, has also played holistic reinforcing effect to the rubber main part 1 that realizes the buffering simultaneously to improved whole sliding support to high-speed, high bearing, high coefficient of friction's bearing capacity, prolonged life, realized more reliable self-lubricating. After the metal mesh 21 is processed, the modified polytetrafluoroethylene main body 22 can be rolled by a rolling mill, and the rolled composite structure 2 is sintered under the protection of nitrogen.

Wherein, the preferred copper mesh structure of expanded metal 21, because it has high heat conductivity, corrosion resistance and workable shaping, can make the integrated configuration 2 that the shaping was accomplished laminate in rubber subject 1 surface more conveniently, wherein, fixed connection is realized to the mode that accessible bonds between the two, and this kind of mode can reduce integrated configuration 2's thickness as far as, of course, if the mode of connecting through the connecting piece is also in the protection range of the utility model.

With continued reference to fig. 1 and 2, it is preferred that the metal mesh 21 be disposed parallel to the friction surface 11, so that the metal mesh 21 can be more compliant to the forces to which the shoe is subjected, and by extending the metal mesh in compliance with the friction surface 11, the heat transfer can be accelerated, and the uniform contact between the modified ptfe body 22 and the structure to which it is supported can be improved, thereby prolonging the service life.

As a preference of the above embodiment, the metal mesh 21 completely covers the friction surface 11 after being projected onto the friction surface 11, so as to ensure that the reinforcing effect of the whole friction surface 11 is equal, and avoid that the service life of the whole friction surface is affected by the formation of a breaking point due to local weakness.

The metal mesh 21 includes only one layer, or is a multi-layer assembly, and when the metal mesh 21 is a multi-layer copper mesh assembly, the layers are fixedly connected with each other, or are stacked in rows. Specifically, the number of the expanded metal 21 may be determined according to a specific friction condition and the size of the cross section of the metal wire constituting the expanded metal, wherein, when the expanded metal 21 is a combination of a plurality of layers, the layers may be first connected by rolling, or only the layers may be stacked together in a row to be rolled with the modified polytetrafluoroethylene main body 22. As shown in fig. 3, the multi-layer metal net 21 is shown and disposed, and each layer of metal net 21 only includes one layer, as shown in fig. 4, the multi-layer metal net 21 is shown and disposed, and each layer of metal net 21 includes three layers, and the above and other combinations are all within the protection scope of the present invention.

The self-lubricating sliding rubber bearing in the above embodiment can be used as a plate-type sliding bearing, as shown in fig. 5, wherein the combined structure 2 can cover the rubber main body 1 according to actual needs, and of course, the combined form can also be used for a sliding bearing structure sliding in an expansion joint relative to the beam body 3, and in this application, the structure of the rubber main body 1 has the following optimized form:

the rubber main body 1 comprises 3N friction surfaces 11, the friction surfaces 11 are all rectangular, and every 3 friction surfaces 11 are sequentially connected end to form a convex structure, or sequentially connected end to form a concave structure, wherein N is a positive integer. The optimization mode in this embodiment mainly aims at the sliding support structure sliding relative to the beam body 3 in the expansion joint, so the connection form with the beam body 3 is considered, as shown in fig. 6, when three friction surfaces 11 are sequentially connected end to form a convex structure, the convex structure is embedded into a concave area in the beam body 3, so that the linearity of the relative sliding between the two friction surfaces can be ensured, wherein fig. 7 and 8 show two structural forms of the rubber body 1, one is completely embedded into the beam body 3, and the other is partially embedded into the beam body 3, and it should be noted that the combined structure 2 only covers the friction surface 11 of the rubber body 1, and this form can effectively reduce the cost.

In fig. 9 and 10, it is shown that when three friction surfaces 11 are connected end to form a concave structure, the periphery of the beam 3 is partially covered, so that the relative sliding between the two can ensure linearity, and similarly, the combined structure 2 only covers the friction surface 11 of the rubber main body 1. The utility model discloses in do not explain friction surface 11 to the curved surface form, because it is in the in-process of production and processing, the production degree of difficulty is very big.

Preferably, in the above embodiment, the cross section of the convex structure or the concave structure is rectangular, or the cross section is isosceles trapezoid.

As shown in fig. 11 to 14, the rectangular cross section makes the sliding support easy to process, and the isosceles trapezoid cross section makes the sliding support have better linear sliding performance relative to the beam 3, and can avoid the falling off between the two. In which fig. 11 and 12 show the case where N is 2, and fig. 13 and 14 show the case where N is 1.

It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A self-lubricating sliding rubber mount, characterized by comprising a rubber body (1) and a composite structure (2) covering at least a friction surface (11) of the rubber body (1);

wherein the composite structure (2) comprises at least one layer of metal mesh (21) and a modified polytetrafluoroethylene body (22) coated therewith.

2. Self-lubricating sliding rubber mount according to claim 1, characterized in that the metal mesh (21) is of copper mesh construction.

3. Self-lubricating sliding rubber mount according to claim 1, characterized in that the metal mesh (21) is parallel to the friction surface (11).

4. Self-lubricating sliding rubber mount according to claim 1, characterized in that the metal mesh (21) completely covers the friction surface (11) after projection onto the friction surface (11).

5. Self-lubricating sliding rubber mount according to claim 1, characterized in that the metal mesh (21) comprises only one layer or, alternatively, is a combination of layers.

6. Self-lubricating sliding rubber mount according to claim 5, characterized in that when the metal mesh (21) is a multi-layer assembly, the layers are fixedly connected to each other or are merely stacked in rows.

7. The self-lubricating sliding rubber support according to any one of claims 1 to 6, wherein the rubber main body (1) comprises 3N friction surfaces (11), the friction surfaces (11) are all rectangular, and every 3 friction surfaces (11) are sequentially connected end to form a convex structure or sequentially connected end to form a concave structure, wherein N is a positive integer.

8. The self-lubricating sliding rubber mount of claim 7, wherein the cross section of the convex structure or the concave structure is rectangular, or the cross section is isosceles trapezoid.

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