CN103010029A - Ground connection block of electric locomotive underpan and processing method thereof - Google Patents
Ground connection block of electric locomotive underpan and processing method thereof Download PDFInfo
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- CN103010029A CN103010029A CN2011102953963A CN201110295396A CN103010029A CN 103010029 A CN103010029 A CN 103010029A CN 2011102953963 A CN2011102953963 A CN 2011102953963A CN 201110295396 A CN201110295396 A CN 201110295396A CN 103010029 A CN103010029 A CN 103010029A
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- electric locomotive
- grounding block
- chassis grounding
- copper
- aluminium core
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Abstract
The invention discloses a ground connection block of an electric locomotive underpan and a processing method thereof. The ground connection block comprises an aluminum core (3), wherein a copper layer (2) is cladded outside the aluminum core; and a copper cladding layer at one side of at least one end of the ground connection block of the underpan is milled and exposes the aluminum core (3), so that the condition that the ground connection block is firmly welded with an aluminum vehicle body is guaranteed. The aluminum core of the ground connection block of the electric locomotive underpan and the copper cladding layer are in metallurgy combination to form a whole, so that the ground connection block has higher connection firmness and anti-deformation ability, and is not easy to corrode because the outer surface of the ground connection block is plated with tin, therefore the service life of the ground connection block is prolonged, and the electricity conduction property of the ground connection block is improved.
Description
Technical field
The invention belongs to aluminum alloy bodywork earthing block technical field, be specifically related to a kind of chassis grounding block for electric locomotive, particularly a kind of for light rail aluminum alloy car-body for metro chassis conductive earthing protection piece.
Background technology
The existing basic structure that is used for the conductive grounding device on the light rail aluminum alloy car-body for metro is: the copper connecting panel is fixed in aluminum alloy bodywork with bolt, on the copper connecting panel, use first again bolt captive joint L-type copper earth plate, 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 earthing block, and copper sheathing is connected rivet with aluminium block and connects, and period of service is slightly long, 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
Technical matters to be solved by this invention is to provide a kind of fastness height, non-deformability is strong, electric conductivity is good chassis grounding block for electric locomotive and job operation thereof of connecting, chassis grounding block of the present invention can firmly weld long service life with aluminium matter car body.
In order to solve these problems of the prior art, technical scheme provided by the invention is:
Chassis grounding block for electric locomotive comprises the aluminium core, it is characterized in that, at described aluminium core outer cladding one bronze medal layer, and the coated copper layer of a side of at least one end of described chassis grounding block milled and remove, and exposes described aluminium core.
Preferably, described chassis grounding block for electric locomotive is cuboid or approximate cuboid.
Preferably, the coated copper layer of the same side at the two ends of described chassis grounding block for electric locomotive is milled to be removed, and exposes described aluminium core, to guarantee earthing block and aluminium matter car body firm welding.
Preferably, described aluminium core and described coated copper layer form the Cu and Al combination face of metallurgical binding.
Preferably, be provided with a bolt mounting holes in the middle part of the described chassis grounding block for electric locomotive.
Preferably, described chassis grounding block for electric locomotive outermost layer also has a tin coating.
The job operation of above-mentioned a kind of chassis grounding block for electric locomotive may further comprise the steps:
(1) special-shaped aluminium bar surface treatment and special-shaped copper layer inwall are processed;
(2) poling: described aluminium bar and described copper pipe are set with, obtain the copper cover aluminum base substrate;
(3) high temperature rolling: be positioned at the aluminium core of internal layer and outer field copper layer and reach and fit tightly gapless;
(4) mechanical stretching moulding: described copper cover aluminum core bar is stretched, until the aluminium core at center and outer field copper layer inner face form metallurgical binding, obtain copper cover aluminum base substrate half-blank;
(5) bulk-breaking and surface treatment;
(6) milling head and punching: the coated copper layer of a side of at least one end of described chassis grounding block is milled to be removed, and exposes described 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 by 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 gapless;
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, advantage of the present invention is:
1. aluminium core and coated copper layer reach metallurgical binding, have formed an integral body, have very high connection fastness and non-deformability;
Chassis grounding block for electric locomotive mill the outer head that covers the copper layer can make things convenient for, securely with the welding of aluminium matter car body, and owing to the satisfactory electrical conductivity of copper, tin, guaranteed the sensitivity of ground protection;
3. the appearance of chassis grounding block for electric locomotive of the present invention is zinc-plated, because tin has strong decay resistance, makes earthing block not perishable, increases the service life
Description of drawings
The invention will be further described below in conjunction with drawings and Examples:
Fig. 1 is chassis grounding block for electric locomotive one example structure scheme drawing of the present invention;
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 is the coated copper layer, and 3 is the aluminium core, and 4 is bolt mounting holes, and 5 is the Cu and Al combination face.
The specific embodiment
Below in conjunction with specific embodiment such scheme is described further.Should be understood that these embodiment are not limited to limit the scope of the invention for explanation the present invention.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, chassis grounding block for electric locomotive, comprise aluminium core 3, at described aluminium core 3 outer claddings one bronze medal layer 2, and the coated copper layer of a side of described chassis grounding block one end is milled to be removed, expose described aluminium core 3, in a preferred embodiment of the present invention, described chassis grounding block for electric locomotive outermost layer also has tin coating 1.In a preferred embodiment, the copper layer 2 of the same side at the two ends of described chassis grounding block for electric locomotive is milled to be removed, and exposes described aluminium core 3, and described aluminium core 3 and described copper layer 2 form the Cu and Al combination face 5 of metallurgical binding.
In a preferred embodiment, chassis grounding block for electric locomotive is for being cuboid or approximate cuboid.Certainly, not violating under the mental condition of the present invention, can also be other shape that it may occur to persons skilled in the art that.
A kind of embodiment of job operation of chassis grounding block for electric locomotive comprises the steps:
(1) special-shaped aluminium bar surface treatment and specially shaped copper tube inwall are processed:
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 set with, obtain the copper cover aluminum base substrate;
(3) high temperature rolling:
After being heated to described copper cover aluminum base substrate about 300 ℃, rolling by 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 gapless;
Annealing: described copper cover aluminum base substrate is heated to 350～450 ℃, and is incubated 1.5～2.5 hours, in most preferred embodiment of the present invention, 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, until the aluminium bar at center and outer field copper layer inner face 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 process, the setting drawing, the clad type copper clad aluminum wire of surface-brightening is made in finishing, and then the dimensional characteristic according to earthing block cuts into piece;
(6) milling head and punching: milling head and punching: the coated copper layer of a side of at least one end of described chassis grounding block is milled to be removed, and exposes described aluminium core;
(7) zinc-plated.
Above-mentioned example only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the people who is familiar with technique can understand content of the present invention and according to this enforcement, can not limit protection scope of the present invention with this.All equivalent transformations that Spirit Essence is done according to the present invention or modification all should be encompassed within protection scope of the present invention.
Claims (9)
1.
Chassis grounding block for electric locomotive comprises aluminium core (3), it is characterized in that, at described aluminium core outer cladding one bronze medal layer (2), and the coated copper layer of a side of at least one end of described chassis grounding block milled and remove, and exposes described aluminium core (3).
2.
Chassis grounding block for electric locomotive according to claim 1 is characterized in that, described chassis grounding block for electric locomotive is cuboid or approximate cuboid.
3.
Chassis grounding block for electric locomotive according to claim 1 is characterized in that, the coated copper layer (2) of the same side at the two ends of described chassis grounding block for electric locomotive is milled to be removed, and exposes described aluminium core (3).
4.
Chassis grounding block for electric locomotive according to claim 1 is characterized in that, described aluminium core (3) and described coated copper layer (2) form the Cu and Al combination face (5) of metallurgical binding.
5.
Chassis grounding block for electric locomotive according to claim 1 is characterized in that, described chassis grounding block for electric locomotive middle part is provided with a bolt mounting holes (4).
6.
According to claim 1, each described chassis grounding block for electric locomotive is characterized in that-5, and described chassis grounding block for electric locomotive outermost layer also has a tin coating (1).
7.
A kind of job operation of chassis grounding block for electric locomotive is characterized in that, comprises the steps:
(1) special-shaped aluminium bar surface treatment and specially shaped copper tube inwall are processed;
(2) poling: described aluminium bar and described copper pipe are set with, obtain the copper cover aluminum base substrate;
(3) high temperature rolling: be positioned at the aluminium core of internal layer and outer field copper layer and reach and fit tightly gapless;
(4) mechanical stretching moulding: described copper cover aluminum core bar is stretched, until the aluminium core at center and outer field copper layer inner face form metallurgical binding, obtain copper cover aluminum base substrate half-blank;
(5) bulk-breaking and surface treatment;
(6) milling head and punching: the coated copper layer of the same side at described chassis grounding block two ends is milled to be removed, and exposes described aluminium core;
(7) zinc-plated.
8.
Chassis grounding block for electric locomotive job operation according to claim 7 is characterized in that, described step (3) high temperature rolling specifically comprises the steps:
After being heated to described copper cover aluminum base substrate about 300 ℃, rolling by 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 gapless;
Annealing: described copper cover aluminum base substrate is heated to 350～450 ℃, and is incubated 1.5～2.5 hours.
9.
Chassis grounding block for electric locomotive job operation according to claim 8 is characterized in that, the heating-up temperature of the annealing of described step (3) high temperature rolling is 380 ℃, is incubated 2 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102953963A CN103010029A (en) | 2011-09-28 | 2011-09-28 | Ground connection block of electric locomotive underpan and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102953963A CN103010029A (en) | 2011-09-28 | 2011-09-28 | Ground connection block of electric locomotive underpan and processing method thereof |
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| CN103010029A true CN103010029A (en) | 2013-04-03 |
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| CN2011102953963A Pending CN103010029A (en) | 2011-09-28 | 2011-09-28 | Ground connection block of electric locomotive underpan and processing method thereof |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698637Y (en) * | 2004-04-29 | 2005-05-11 | 刘树仁 | Aluminum alloy grounding block for light car |
| CN201046675Y (en) * | 2007-06-22 | 2008-04-16 | 大同市东方机车配件有限公司 | Electric locomotive earthing device |
| CN101241778A (en) * | 2008-02-04 | 2008-08-13 | 北京科技大学 | A high-performance cooper-coated aluminum rectangle section compound conductive bus bar and its making technology |
| CN201160012Y (en) * | 2008-01-25 | 2008-12-03 | 鲁春雷 | Aluminum coated copper term bus |
| CN101478092A (en) * | 2008-09-28 | 2009-07-08 | 崔纪康 | Conductive bus and manufacturing method thereof |
| US20110094099A1 (en) * | 2005-04-28 | 2011-04-28 | Xishan Yang | Method for manufacturing copper clad aluminium bus bar |
| CN202333153U (en) * | 2011-09-28 | 2012-07-11 | 苏州市南方欣达双金属材料有限公司 | Chassis grounding block for electric locomotive |
-
2011
- 2011-09-28 CN CN2011102953963A patent/CN103010029A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2698637Y (en) * | 2004-04-29 | 2005-05-11 | 刘树仁 | Aluminum alloy grounding block for light car |
| US20110094099A1 (en) * | 2005-04-28 | 2011-04-28 | Xishan Yang | Method for manufacturing copper clad aluminium bus bar |
| CN201046675Y (en) * | 2007-06-22 | 2008-04-16 | 大同市东方机车配件有限公司 | Electric locomotive earthing device |
| CN201160012Y (en) * | 2008-01-25 | 2008-12-03 | 鲁春雷 | Aluminum coated copper term bus |
| CN101241778A (en) * | 2008-02-04 | 2008-08-13 | 北京科技大学 | A high-performance cooper-coated aluminum rectangle section compound conductive bus bar and its making technology |
| CN101478092A (en) * | 2008-09-28 | 2009-07-08 | 崔纪康 | Conductive bus and manufacturing method thereof |
| CN202333153U (en) * | 2011-09-28 | 2012-07-11 | 苏州市南方欣达双金属材料有限公司 | Chassis grounding block for electric locomotive |
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Application publication date: 20130403 |