CN202333153U - Chassis grounding block for electric locomotive - Google Patents
Chassis grounding block for electric locomotive Download PDFInfo
- Publication number
- CN202333153U CN202333153U CN2011203723998U CN201120372399U CN202333153U CN 202333153 U CN202333153 U CN 202333153U CN 2011203723998 U CN2011203723998 U CN 2011203723998U CN 201120372399 U CN201120372399 U CN 201120372399U CN 202333153 U CN202333153 U CN 202333153U
- Authority
- CN
- China
- Prior art keywords
- electric locomotive
- aluminium core
- chassis earth
- earth piece
- aluminium
- 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
Links
Abstract
The utility model discloses a chassis grounding block for an electric locomotive, comprising an aluminium core (3), wherein a copper layer (2) is coated outside the aluminium core, and the coated copper layers on the same side surface of the both ends of the chassis grounding block are milled away to expose the aluminium core (3). The aluminium core and the coated copper layers of the chassis grounding block for an electric locomotive disclosed by the utility model achieve metallurgical bonding, so as to form an integer which is greatly high in connection fastness and deformation-resisting capability; moreover, tin is plated on the outer surface of the integer, so that the grounding block is not easy to corrode, thus prolonging the service life; and the good electrical conductivity of tin ensures the sensitivity of grounding protection.
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 chassis earth piece, particularly a kind of light rail subway aluminum alloy bodywork chassis conductive earthing protection piece that is used for.
Background technology
The existing basic structure that is used for the conductive grounding device on the light rail subway aluminum alloy bodywork is: with the copper connecting plate with bolt in aluminum alloy bodywork; On the copper connecting plate, connect L type copper earth plate with bolt earlier again; Again copper connecting plate and L type copper earth plate are welded, be drilled with circular hole on the non-solder side of L type copper earth plate.The existing obvious problem of this earthing device 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 service time is long slightly; Then form oxide layer 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 problem to be solved is to provide a kind of fastness height, non-deformability is strong, electric conductivity is good electric locomotive chassis earth piece of connecting, and the chassis earth 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 chassis earth piece comprises the aluminium core, it is characterized in that, outside said aluminium core, coats a bronze medal layer, and the coating copper layer of a side of at least one end of said chassis earth piece milled and remove, and exposes said aluminium core.
Preferably, said electric locomotive chassis earth piece is cuboid or approximate cuboid.
Preferably, the coating copper layer of the same side at the two ends of said electric locomotive chassis earth piece is milled to be removed, and exposes said aluminium core, to guarantee ground connection piece and aluminium matter car body firm welding.
Preferably, said aluminium core and said coating copper layer form the copper aluminium faying face of metallurgical binding.
Preferably, be provided with a bolt mounting holes in the middle part of the said electric locomotive chassis earth piece.
Preferably, said electric locomotive chassis earth piece outermost layer also has a tin coating.
The processing method of above-mentioned a kind of electric locomotive chassis earth piece may further comprise the steps:
(1) special-shaped aluminium bar surface treatment and special-shaped copper layer 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 semi-finished product;
(5) bulk-breaking and surface treatment;
(6) milling head and punching: the coating copper layer of a side of at least one end of said chassis earth piece is milled to be removed, and exposes said aluminium core;
(7) zinc-plated.
Preferably, described step (3) high temperature rolling specifically comprises the steps:
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 section, 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;
2. the head that covers the copper layer outside electric locomotive chassis earth piece mills can make things convenient for, weld with aluminium matter car body securely, and because the satisfactory electrical conductivity of copper, tin has guaranteed the sensitivity of ground protection;
3. the appearance of the electric locomotive chassis earth piece of the utility model is zinc-plated, because tin has strong decay resistance, makes the ground connection piece not perishable, increases the 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 chassis earth piece one example structure sketch map;
Fig. 2 is the A-A direction one embodiment cutaway view of Fig. 1;
Fig. 3 is the B-B direction one embodiment cutaway view of Fig. 1.
Wherein: 1 is the tin layer, and 2 for coating the copper layer, and 3 is the aluminium core, and 4 is bolt mounting holes, and 5 is copper aluminium faying face.
Embodiment
Below in conjunction with specific embodiment such scheme is further specified.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
Shown in Fig. 1～3; Electric locomotive chassis earth piece comprises aluminium core 1, is a coating copper layer 2 outside said aluminium core 3; And the coating copper layer of a side of said chassis earth piece one end is milled to be removed; Expose said aluminium core 3, in a preferred embodiment of the utility model, said electric locomotive chassis earth piece outermost layer also has tin coating 1.In a preferred embodiment, the coating copper layer 2 of the same side at the two ends of said electric locomotive chassis earth piece is milled to be removed, and exposes said aluminium core 3, the copper aluminium faying face 5 of said aluminium core 3 and said coating copper layer 2 formation metallurgical binding.
In a preferred embodiment, electric locomotive chassis earth piece is for being 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 embodiment of processing method of electric locomotive chassis earth 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 section 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 section, 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 copper cover aluminum base substrate 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 semi-finished product;
(5) bulk-breaking and surface treatment: the copper cover aluminum semi-finished product are 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 requirement according to the ground connection piece cuts into piece then;
(6) milling head and punching: milling head and punching: the coating copper layer of a side of at least one end of said chassis earth piece is milled to be removed, and exposes said aluminium core;
(7) zinc-plated.
Above-mentioned instance only is the technical conceive and the characteristics of explanation the utility model, and 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 range 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 range of the utility model.
The utility model discloses a kind of electric locomotive chassis earth piece, comprise aluminium core (3), outside said aluminium core, coat a bronze medal layer (2), and the coating copper layer of the same side at said chassis earth piece two ends milled and removed, exposed said aluminium core (3).The aluminium core of the utility model electric locomotive chassis earth piece reaches metallurgical binding with coating copper layer; Formed an integral body, have very high connection fastness and non-deformability, and appearance has been zinc-plated; Make the ground connection piece not perishable; Prolonged useful life, the satisfactory electrical conductivity of tin has guaranteed the sensitivity of ground protection.
Claims (6)
1. electric locomotive chassis earth piece comprises aluminium core (3), it is characterized in that, outside said aluminium core, coats a bronze medal layer (2), and the coating copper layer of a side of at least one end of said chassis earth piece milled and remove, and exposes said aluminium core (3).
2. electric locomotive chassis earth piece according to claim 1 is characterized in that, said electric locomotive chassis earth piece is a cuboid.
3. electric locomotive chassis earth piece according to claim 1 is characterized in that, the coating copper layer (2) of the same side at the two ends of said electric locomotive chassis earth piece is milled to be removed, and exposes said aluminium core (3).
4. electric locomotive chassis earth 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 chassis earth piece according to claim 1 is characterized in that, said electric locomotive chassis earth piece middle part is provided with a bolt mounting holes (4).
6. according to each described electric locomotive chassis earth piece of claim 1-5, it is characterized in that said electric locomotive chassis earth piece outermost layer also has a tin coating (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723998U CN202333153U (en) | 2011-09-28 | 2011-09-28 | Chassis grounding block for electric locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203723998U CN202333153U (en) | 2011-09-28 | 2011-09-28 | Chassis grounding block for electric locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202333153U true CN202333153U (en) | 2012-07-11 |
Family
ID=46445120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203723998U Expired - Fee Related CN202333153U (en) | 2011-09-28 | 2011-09-28 | Chassis grounding block for electric locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202333153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010029A (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 underpan and processing method thereof |
-
2011
- 2011-09-28 CN CN2011203723998U patent/CN202333153U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103010029A (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 underpan 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 |
Granted publication date: 20120711 Termination date: 20160928 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |