CN104847814A - Wear-resisting type middle shell - Google Patents
Wear-resisting type middle shell Download PDFInfo
- Publication number
- CN104847814A CN104847814A CN201510243439.1A CN201510243439A CN104847814A CN 104847814 A CN104847814 A CN 104847814A CN 201510243439 A CN201510243439 A CN 201510243439A CN 104847814 A CN104847814 A CN 104847814A
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- China
- Prior art keywords
- thickness
- sintered copper
- wear
- copper powder
- middle shell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The invention discloses a wear-resisting type middle shell which is long in service life and low in manufacture cost. The wear-resisting type middle shell comprises a main body, wherein a guide hole is formed in the middle of the main body; a shaft sleeve is arranged at the middle of the guide hole and the shaft sleeve is a composite structure which is composed of a low carbon steel precision tube at the outer layer and a wear-resisting layer at the inner layer, the wear-resisting layer is composed of a steel plate and sintered copper powder layer and a polytetrafluoroethylene layer on the surface of the steel plate, the thickness of the sintered copper powder layer is 0.1-0.3mm, the thickness of the polytetrafluoroethylene layer is 0.1-0.3mm, gaps are formed in the surface of the sintered copper powder layer, and the porosity is 10-20%. The wear-resisting type middle shell is applied to the spring brake chamber.
Description
Technical field
The present invention relates to a kind of spring brake chamber, particularly relate to the middle shell on a kind of spring brake chamber.
Background technique
Spring brake chamber is for the vitals of in the brake system of car such as heavy-load automobile, extraordinary commercial vehicle, and the quality of its performance is directly connected to the Security of service brake.Spring brake chamber comprises middle shell, be provided with pilot hole in the middle of middle shell, pilot hole not only needs to have guide function, also needs to have sealing function, and O-ring seals common pilot hole is only equipped with, in push rod and the frequent contact process of pilot hole, seal ring easily produces wearing and tearing, distortion or distortion, thus affects seal ring working life, middle shell material is aluminum alloy simultaneously, and the material of push rod is steel, thus easily produce inordinate wear, thus impact guiding, sealability.In order to improve working life, some producers are provided with axle sleeve in pilot hole, but due to the friction ractor between push rod and axle sleeve comparatively large, thus still fail working life to reach satisfactory state.
Summary of the invention
The wear-resisting type middle shell that the technical problem to be solved in the present invention is to provide a kind of long service life, manufacture cost is economized.
In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:
The present invention includes body, be located at the middle pilot hole of body, being provided with axle sleeve described in axle sleeve in the middle of described pilot hole is composite structure, be made up of outer low carbon steel precision pipe and internal layer wearing layer, described wearing layer is made up of the sintered copper bisque on steel plate and surface thereof and polytetrafluoroethylene floor, the thickness of described sintered copper bisque is 0.1 ~ 0.3mm, the thickness of described polytetrafluoroethylene floor is 0.1 ~ 0.3mm, and described sintered copper bisque surface is provided with hole, and described porosity ratio is 10 ~ 20%.
As preferably, the thickness of described sintered copper bisque is 0.1mm, and the thickness of described polytetrafluoroethylene floor is 0.1mm, and described sintered copper bisque surface porosity factor is 10%.
As preferably, the thickness of described sintered copper bisque is 0.2mm, and the thickness of described polytetrafluoroethylene floor is 0.2mm, and described sintered copper bisque surface porosity factor is 15%.
As preferably, the thickness of described sintered copper bisque is 0.3mm, and the thickness of described polytetrafluoroethylene floor is 0.3mm, and described sintered copper bisque surface porosity factor is 20%.
The present invention compared with prior art, has following obvious advantage and beneficial effect:
1, long service life.Because the present invention has set up axle sleeve in the middle of pilot hole, improve the wear resistance at guiding position, thus effectively increase the service life.
2, manufacture cost is economized.Because the present invention adopts composite structure at pilot hole Intermediate shaft sleeve, save the precious metals such as Cuprum alloy, effectively can save manufacture cost.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structure for amplifying schematic diagram of Fig. 1 Intermediate shaft sleeve.
Embodiment
Below in conjunction with the drawings and the specific embodiments, the present invention is described in further detail:
As shown in Figure 1 and Figure 2: preferred embodiment one comprises body 1, is located at the middle pilot hole 2 of body 1, axle sleeve 3 is provided with in the middle of pilot hole 2, axle sleeve 3 is composite structure, be made up of the accurate pipe 5 of outer low carbon steel and internal layer wearing layer, wearing layer is made up of with polytetrafluoroethylene floor 8 the sintered copper bisque 7 on steel plate 6 and surface thereof, the thickness of sintered copper bisque 7 is 0.1mm, and the thickness of polytetrafluoroethylene floor 8 is 0.1mm, and sintered copper bisque 7 surface porosity factor is 10%.
Its basic structure of preferred embodiment two is identical with preferred embodiment one, and difference is the thickness of sintered copper bisque 7 is 0.2mm, and the thickness of polytetrafluoroethylene floor 8 is 0.2mm, and sintered copper bisque 7 surface porosity factor is 15%.
Its basic structure of preferred embodiment three is identical with preferred embodiment one, and the thickness of difference sintered copper bisque 7 is 0.3mm, and the thickness of polytetrafluoroethylene floor 8 is 0.3mm, and sintered copper bisque 7 surface porosity factor is 20%.
Claims (4)
1. a wear-resisting type middle shell, comprise body, be located at the middle pilot hole of body, axle sleeve is provided with in the middle of described pilot hole, it is characterized in that described axle sleeve is composite structure, be made up of outer low carbon steel precision pipe and internal layer wearing layer, described wearing layer is made up of the sintered copper powder on steel plate and surface thereof and polytetrafluoroethylene floor, the thickness of described sintered copper powder is 0.1 ~ 0.3mm, the thickness of described polytetrafluoroethylene floor is 0.1 ~ 0.3mm, described sintered copper powder surface is provided with hole, and described porosity ratio is 10 ~ 20%.
2. wear-resisting type middle shell according to claim 1, is characterized in that the thickness of described sintered copper powder is 0.1mm, and the thickness of described polytetrafluoroethylene floor is 0.1mm, and described sintered copper powder surface porosity factor is 10%.
3. wear-resisting type middle shell according to claim 1, is characterized in that the thickness of described sintered copper powder is 0.2mm, and the thickness of described polytetrafluoroethylene floor is 0.2mm, and described sintered copper powder surface porosity factor is 15%.
4. wear-resisting type middle shell according to claim 1, is characterized in that the thickness of described sintered copper powder is 0.3mm, and the thickness of described polytetrafluoroethylene floor is 0.3mm, and described sintered copper powder surface porosity factor is 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510243439.1A CN104847814A (en) | 2015-05-10 | 2015-05-10 | Wear-resisting type middle shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510243439.1A CN104847814A (en) | 2015-05-10 | 2015-05-10 | Wear-resisting type middle shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104847814A true CN104847814A (en) | 2015-08-19 |
Family
ID=53847697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510243439.1A Pending CN104847814A (en) | 2015-05-10 | 2015-05-10 | Wear-resisting type middle shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104847814A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815558A (en) * | 2019-12-21 | 2020-02-21 | 江苏阜光工程新技术有限公司 | Concrete working table |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4215279A1 (en) * | 1992-05-09 | 1993-11-11 | Teves Gmbh Alfred | Disc brake with operating piston displaceable with wear on brake blocks - has brake operating cylinder running into cooling fluid storage chamber which is enclosed by cooling ribs |
| CN202811914U (en) * | 2012-05-08 | 2013-03-20 | 浙江派普汽配有限公司 | Casing in brake air chamber |
| US20130098716A1 (en) * | 2010-06-17 | 2013-04-25 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Disc Brake of Hydraulic Self-Energizing Design with Adjusting Device |
| CN103982552A (en) * | 2014-05-18 | 2014-08-13 | 金迪荣 | Equalizer bearing for automobiles |
| CN104061242A (en) * | 2014-05-18 | 2014-09-24 | 金迪荣 | Multi-layered composite wear resistant balancing bearing and manufacturing technique thereof |
| CN204004102U (en) * | 2014-07-28 | 2014-12-10 | 浙江派普汽配有限公司 | Spring brake chamber middle shell |
-
2015
- 2015-05-10 CN CN201510243439.1A patent/CN104847814A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4215279A1 (en) * | 1992-05-09 | 1993-11-11 | Teves Gmbh Alfred | Disc brake with operating piston displaceable with wear on brake blocks - has brake operating cylinder running into cooling fluid storage chamber which is enclosed by cooling ribs |
| US20130098716A1 (en) * | 2010-06-17 | 2013-04-25 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Disc Brake of Hydraulic Self-Energizing Design with Adjusting Device |
| CN202811914U (en) * | 2012-05-08 | 2013-03-20 | 浙江派普汽配有限公司 | Casing in brake air chamber |
| CN103982552A (en) * | 2014-05-18 | 2014-08-13 | 金迪荣 | Equalizer bearing for automobiles |
| CN104061242A (en) * | 2014-05-18 | 2014-09-24 | 金迪荣 | Multi-layered composite wear resistant balancing bearing and manufacturing technique thereof |
| CN204004102U (en) * | 2014-07-28 | 2014-12-10 | 浙江派普汽配有限公司 | Spring brake chamber middle shell |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110815558A (en) * | 2019-12-21 | 2020-02-21 | 江苏阜光工程新技术有限公司 | Concrete working table |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150819 |