CN202294323U - Electric locomotive body grounding block - Google Patents
Electric locomotive body grounding block Download PDFInfo
- Publication number
- CN202294323U CN202294323U CN2011203711365U CN201120371136U CN202294323U CN 202294323 U CN202294323 U CN 202294323U CN 2011203711365 U CN2011203711365 U CN 2011203711365U CN 201120371136 U CN201120371136 U CN 201120371136U CN 202294323 U CN202294323 U CN 202294323U
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- CN
- China
- Prior art keywords
- electric locomotive
- ground connection
- car body
- connection piece
- body ground
- Prior art date
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses an electric locomotive body grounding block, which comprises an aluminum core (3). The outside of the aluminum core (3) is coated with a copper layer (2). The copper layer (2) coated on a head part on one end of the electric locomotive body grounding block is milled to be removed so as to expose the aluminum core (3), so that the grounding block is firmly welded with the aluminum locomotive body. According to the utility model, the metallurgical bonding of the aluminum core and the coated copper layer of the electric locomotive body grounding block is performed to form an integral body. Therefore, the grounding block is very high in connection fastness and deformation resistance. Meanwhile, the outside of the grounding block is tin-plated, so that the grounding block is not easily corroded. The service life of the grounding block is prolonged, while the conductive performance of the grounding block is increased.
Description
Technical field
the utility model belongs to aluminum alloy bodywork ground connection piece technical field, is specifically related to a kind of electric locomotive car body ground connection piece, particularly a kind of light rail subway aluminum alloy bodywork conductive earthing protection piece that is used for.
Background technology
existing basic structure that is used for the conductive grounding device on the light rail subway aluminum alloy bodywork is: with the copper connecting panel with bolt in aluminum alloy bodywork; On the copper connecting panel, connect L type copper earth plate with bolt earlier again; Again copper connecting panel and L type copper earth plate are welded, be drilled with circular hole on the non-face of weld of L type copper earth plate.The existing obvious problem of this earth system is: the fastness of two kinds of metal solder difficulties of copper and aluminium, device is poor and corroded easily and be out of shape.Chinese patent (application) CN200420040313.1 discloses a kind of ground connection piece, and copper sheathing is connected through rivet with aluminium block, and period of service is long slightly; Then form oxide coating between copper sheathing and aluminium block; Cause conduction bad, the easy loose or dislocation of rivet equally also exists to connect unstable problem.
Summary of the invention
the utility model technical matters to be solved is to provide a kind of fastness height, non-deformability is strong, electric conductivity is good electric locomotive car body ground connection piece of connecting; The car body ground connection piece of the utility model can firmly weld long service life with aluminium matter car body.
In order to solve these problems of the prior art, the technical scheme that the utility model provides is:
electric locomotive car body ground connection piece comprises the aluminium core, it is characterized in that; Outside said aluminium core, coat a bronze medal layer; And the coating copper layer of at least one termination of said electric locomotive car body ground connection piece portion is milled to be removed, and exposes said aluminium core, in order to guarantee ground connection piece and aluminium matter car body firm welding.
are preferred, and said electric locomotive car body ground connection piece is cuboid or approximate cuboid.
are preferred, and the coating copper layer of said electric locomotive car body ground connection piece opposite end head is milled to be removed, and exposes said aluminium core, in order to guarantee ground connection piece and aluminium matter car body firm welding.
are preferred, and said aluminium core and said coating copper layer form the copper aluminium faying face of metallurgical binding.
are preferred, and said electric locomotive car body ground connection piece middle part is provided with a bolt mounting holes.
are preferred, and said electric locomotive car body ground connection piece outermost layer also has a tin coating.
The job operation of above-mentioned electric locomotive car body ground connection piece may further comprise the steps:
(1) special-shaped aluminium bar surface treatment and specially shaped copper tube inwall are handled;
(2) poling: described aluminium bar and described copper pipe are carried out suit, obtain the copper cover aluminum base substrate;
(3) high temperature rolling: the aluminium core and the outer field copper layer that are positioned at internal layer reach and fit tightly no gap;
(4) mechanical stretching moulding: described copper cover aluminum core bar is stretched, and aluminium core and outer field copper layer inner face up to the center form metallurgical binding, obtain copper cover aluminum base substrate half-blank;
(5) bulk-breaking and surface treatment;
(6) milling head and punching: the coating copper layer of at least one termination of said car body ground connection piece portion is milled to be removed, and exposes said aluminium core;
(7) are zinc-plated.
Preferably, described step (3) high temperature rolling specifically comprises as follows:
After being heated to described copper cover aluminum base substrate about 300 ℃, rolling through the multiple tracks roll immediately, it is rectangle that the copper cover aluminum base substrate is rolled into cross-sectional plane, and the aluminium core that is positioned at internal layer and outer field copper layer is reached fit tightly no gap;
annealing: described copper cover aluminum base substrate is heated to 350～450 ℃, and is incubated 1.5～2.5 hours.
preferably, the heating-up temperature of the annealing of described step (3) high temperature rolling is 380 ℃, is incubated 2 hours.
Than solution of the prior art, the utility model advantage is:
1. the aluminium core reaches metallurgical binding with coating copper layer, has formed an integral body, has very high connection fastness and non-deformability;
Electric locomotive car body ground connection piece mill the outer head that covers the copper layer can make things convenient for, securely with the welding of aluminium matter car body, and because the satisfactory electrical conductivity of copper, tin, guaranteed the sensitivity of ground protection;
3. the appearance of the electric locomotive car body ground connection piece of the utility model are zinc-plated, because tin has strong decay resistance, make the ground connection piece not perishable, prolonged service life.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
Fig. 1 is the utility model electric locomotive car body ground connection piece one example structure scheme drawing;
Fig. 2 is the A-A direction one embodiment generalized section of Fig. 1;
Fig. 3 is the B-B direction one embodiment section intention of Fig. 1.
wherein: 1 is the tin layer; 2 for coating the copper layer; 3 is the aluminium core; 4 is bolt mounting holes, and 5 is copper aluminium faying face.
The specific embodiment
further specify such scheme below in conjunction with specific embodiment.Should be understood that these embodiment are used to the utility model is described and the scope that is not limited to limit the utility model.The implementation condition that adopts among the embodiment can be done further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in the normal experiment.
Embodiment
are shown in Fig. 1～3; Electric locomotive car body ground connection piece comprises the aluminium core 3 that is positioned at the middle part, outside said aluminium core 3, coats a bronze medal layer 2; And the coating copper layer 2 of said car body ground connection piece one termination portion is milled to be removed; Expose aluminium core 3, in a preferred embodiment of the utility model, said electric locomotive car body ground connection piece also has outermost tin coating 1.In a preferred embodiment, the coating copper layer 2 of the two ends head of said electric locomotive car body ground connection piece is milled to be removed, and exposes aluminium core 3.Said aluminium core and said copper layer form the copper aluminium faying face 5 of metallurgical binding.
in a preferred embodiment kind, electric locomotive car body ground connection piece is cuboid or approximate cuboid.Certainly, not violating under the utility model mental condition, can also be other shape that it may occur to persons skilled in the art that.
A kind of job operation of electric locomotive car body ground connection piece comprises the steps:
(1) special-shaped aluminium bar surface treatment and specially shaped copper tube inwall are handled:
Select fine aluminium rod and T2 copper pipe, be heated to about 300 ℃, described aluminium bar and described copper pipe all are processed into cross-sectional plane for oval shape, be beneficial to follow-up rolling mill practice, oil stain and oxide skin are removed in aluminium bar outside and copper pipe inner face;
(2) poling: described aluminium bar and described copper pipe are carried out suit, obtain the copper cover aluminum base substrate;
(3) high temperature rolling:
After being heated to described copper cover aluminum base substrate about 300 ℃, rolling through the multiple tracks roll immediately, it is rectangle that the copper cover aluminum base substrate is rolled into cross-sectional plane, and the aluminium core that is positioned at internal layer and outer field copper layer is reached fit tightly no gap;
Annealing: described copper cover aluminum base substrate is heated to 350～450 ℃, and is incubated 1.5～2.5 hours, in the most preferred embodiment of the utility model, heating-up temperature is 380 ℃, is incubated 2 hours, eliminates the internal stress of described copper cover aluminum base substrate;
(4) mechanical stretching moulding: described bad body of copper cover aluminum is carried out mechanical stretching, and aluminium bar and outer field copper layer inner face up to the center form metallurgical binding, obtain copper cover aluminum base substrate half-blank;
(5) bulk-breaking and surface treatment: the copper cover aluminum half-blank is carried out the surface remove oxide skin and handle, the setting drawing, the clad type copper clad aluminum wire of surface-brightening is processed in finishing, and the dimensional characteristic according to the ground connection piece cuts into piece then;
(6) milling head and punching: the coating copper layer of said car body ground connection piece one termination portion is milled to be removed, and exposes said aluminium core,
(7) are zinc-plated.
above-mentioned instance is only for explaining the technical conceive and the characteristics of the utility model; Its purpose is to let the people who is familiar with this technology can understand content of the utility model and enforcement according to this, can not limit the protection domain of the utility model with this.All equivalent transformation or modifications of being done according to the utility model spirit all should be encompassed within the protection domain of the utility model.
Claims (6)
1. electric locomotive car body ground connection piece comprises aluminium core (3), it is characterized in that, outside said aluminium core (3), coats a bronze medal layer (2), and the coating copper layer (2) of at least one termination of said electric locomotive car body ground connection piece portion milled and remove, and exposes said aluminium core (3).
2. electric locomotive car body ground connection piece according to claim 1 is characterized in that, it is characterized in that, said electric locomotive car body ground connection piece is cuboid or approximate cuboid.
3. electric locomotive car body ground connection piece according to claim 1 is characterized in that, the coating copper layer (2) of the opposite end head of said electric locomotive car body ground connection piece is milled to be removed, and exposes said aluminium core (3).
4. electric locomotive car body ground connection piece according to claim 1 is characterized in that, said aluminium core (3) and said coating copper layer (2) form the copper aluminium faying face (5) of metallurgical binding.
5. electric locomotive car body ground connection piece according to claim 1 is characterized in that, said electric locomotive car body ground connection piece middle part is provided with a bolt mounting holes (4).
6. according to each described electric locomotive car body ground connection piece of claim 1-5, it is characterized in that said electric locomotive car body ground connection piece outermost layer also has a tin coating (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203711365U CN202294323U (en) | 2011-09-28 | 2011-09-28 | Electric locomotive body grounding block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203711365U CN202294323U (en) | 2011-09-28 | 2011-09-28 | Electric locomotive body grounding block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202294323U true CN202294323U (en) | 2012-07-04 |
Family
ID=46363282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203711365U Expired - Fee Related CN202294323U (en) | 2011-09-28 | 2011-09-28 | Electric locomotive body grounding block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202294323U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010030A (en) * | 2011-09-28 | 2013-04-03 | 苏州市南方欣达双金属材料有限公司 | Ground connection block of electric locomotive body and processing method thereof |
-
2011
- 2011-09-28 CN CN2011203711365U patent/CN202294323U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010030A (en) * | 2011-09-28 | 2013-04-03 | 苏州市南方欣达双金属材料有限公司 | Ground connection block of electric locomotive body and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20160928 |