CN202746409U

CN202746409U - Modified polytetrafluoroethylene (PTFE) thrust bearing shell

Info

Publication number: CN202746409U
Application number: CN 201220408076
Authority: CN
Inventors: 何奎炜
Original assignee: ZHEJIANG WANLONG BEARING BUSH CO Ltd
Current assignee: ZHEJIANG WANLONG BEARING BUSH CO Ltd
Priority date: 2012-08-17
Filing date: 2012-08-17
Publication date: 2013-02-20
Anticipated expiration: 2022-08-17

Abstract

The utility model relates to a modified polytetrafluoroethylene (PTFE) thrust bearing shell which comprises a steel bearing shell body. A layer of modified PTFE board is adhered to the surface of the steel bearing shell body and is placed on the position of the top surface of the steel bearing shell body. A gap is formed on the rim of a top rim surface. Because the modified PTFE board is adhered on the surface of the steel bearing shell body through an adhesion method, manufacturing process is simplified. Sintering equipment and braze welding equipment and the like are not needed. Meanwhile, the modified PTFE board is capable of enabling the thrust bearing shell to be of good self-lubricating performance and enabling shell surface not easily to be out of shape and being good and stable in performance.

Description

A kind of modified Teflon thrust bearing shoe

Technical field

The utility model relates to a kind of thrust bearing shoe, particularly relates to a kind of modified Teflon thrust bearing shoe.

Background technique

At present, at the thrust position of the main equipments such as cement plant and ceramics factory, burning accident because the Environmental Conditions temperature is high, dust is large and insufficient lubrication, often occurs in the thrust bearing shoe that adopts Babbitt or bronze alloy material to make, and causes very large loss.

The thrust bearing shoe that also has adopts plastic material to make, and is comprised of polytetrafluoroethylplastic plastic tiling, elastic metal layer and metal tile matrix.Make elastic metal layer after the bronze spring is repressed, polytetrafluoroethylplastic plastic powder and elastic metal layer are made a watt body through behind the compacting sintering, adopt method for welding that a watt body is fixed on the metal tile matrix, make the elastomeric plastics thrust bearing shoe.Because the bronze spring hole in the elastic metal layer is inhomogeneous, so that the creep properties of polytetrafluoroethylplastic plastic tiling is very big, easily causes the transversion malposition of tiling and metal tile matrix, even the tiling be full of cracks occurs.And this processing technology is complicated, makes the tiling equipment investment large.Simultaneously, raw materials consumption is many, the waste resource, and cost is high.The soldering tiling need be heated, and energy waste is very big.On the other hand, must select the scolder soldering that contains zinc chloride during watt body soldering, it is also leaded, and is big for environment pollution.

The model utility content

Technical problem to be solved in the utility model is, the thrust bearing shoe that provides a kind of tiling to be made by modified teflon material had both reduced the creep shape of tiling, again so that thrust bearing shoe has good self-lubricating function.

The utility model is to realize like this, a kind of modified Teflon thrust bearing shoe, comprise steel bearing shell matrix, be bonded with one deck modified Teflon plate at described steel bearing shell matrix surface, described modified Teflon plate is positioned at the place, plane, top of steel bearing shell matrix, and its edge has the gap apart from the edge on plane, described top.

Further, described gap is 0.5 ~ 15 millimeter.

Compared with prior art, modified Teflon thrust bearing shoe of the present utility model owing to using adhesive bonding method that the modified Teflon plate is fitted on the steel bearing shell matrix surface, has been simplified manufacturing process, and need not the equipment such as sintering and soldering.Simultaneously, adopt the polyfluortetraethylene plate of modification, so that thrust bearing shoe had not only had good selflubricating ability but also had been difficult for occuring the creep shape of tiling, excellent performance is stable.

Description of drawings

Fig. 1 is the schematic perspective view of the utility model one preferred embodiment;

Fig. 2 is the A-A generalized section of Fig. 1.

Embodiment

In order to make the purpose of this utility model, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.

The modified Teflon thrust bearing shoe of a preferred embodiment of the present utility model is comprised of polylith thrust bearing shoe monomer 1 ordered arrangement as shown in Figure 1.Please together referring to shown in Figure 2, thrust bearing shoe monomer 1 comprises steel bearing shell matrix 11, bonding layer 12 and modified Teflon plate 13, and bonding layer 12 is fitted modified Teflon plate 13 and is fixed on the surface of steel bearing shell matrix 11.

Modified Teflon plate 13 is positioned at the place, plane, top of steel bearing shell matrix 11, and its edge has gap 14 far from the edge on the plane, top of steel bearing shell matrix 11.Gap 14 is 0.5 ~ 15 millimeter.The purpose that gap 14 is set is to simplify adhesion technique, does not need to carry out trim process after modified Teflon plate 13 and steel bearing shell matrix 11 are bonding and directly can use, and does not destroy adhesion stability between the two.Be appreciated that gap 14 is less, effective area of contact of modified Teflon plate 13 is just larger.

Modified Teflon plate 13 is to be mixed by pure polytetrafluoroethylmaterial material and a certain amount of bulking agent.Bulking agent can be polybenzoate, glass fibre, graphite, lead powder, two fluidisation molybdenums etc.Add bulking agent in polytetrafluoroethylmaterial material after, it is more excellent that some characteristic of the modified teflon material of making is compared pure polytetrafluoroethylmaterial material.The Applicable scope of modified teflon material is wider than pure polytetrafluoroethylmaterial material.

Modified Teflon plate 13 in the present embodiment is to be mixed by the polybenzoate of pure polytetrafluoroethylmaterial material and 5 ~ 30% and 3 ~ 5% graphite.Polytetrafluoroethylmaterial material itself has good antiseptic power and resistance to high temperature, and, have also that moisture absorption is low and expansion coefficient is low, dimensionally stable, and the characteristics such as self-lubricating property is good, wearability is strong.In polytetrafluoroethylmaterial material, add abrasion resistance properties and the resistance to high temperature that polybenzoate can further improve polytetrafluoroethylmaterial material, and in polytetrafluoroethylmaterial material, add the compression resistant croop property that powdered graphite can improve polytetrafluoroethylmaterial material.

In sum, the utlity model has: good stability of the dimension, corrosion resistance is strong, and is high temperature resistant and wear-resistant.Tiling can be inlayed and hide hard impurity, alleviates the wearing and tearing to axle, delays the generation of accident.Therefore, that the utility model can use is high in ambient temperature, dust large and be difficult in the lubricated place, and Applicable scope is wider.And preparation process is simple, energy-conserving and environment-protective.

The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. modified Teflon thrust bearing shoe, comprise steel bearing shell matrix, it is characterized in that, be bonded with one deck modified Teflon plate at described steel bearing shell matrix surface, described modified Teflon plate is positioned at the plane, top of steel bearing shell matrix, and its edge has the gap apart from the edge on plane, described top.

2. modified Teflon thrust bearing shoe as claimed in claim 1 is characterized in that, described gap is 0.5 ~ 15 millimeter.