CN2695718Y - Bi-metal brake drum - Google Patents
Bi-metal brake drum Download PDFInfo
- Publication number
- CN2695718Y CN2695718Y CN 200420040148 CN200420040148U CN2695718Y CN 2695718 Y CN2695718 Y CN 2695718Y CN 200420040148 CN200420040148 CN 200420040148 CN 200420040148 U CN200420040148 U CN 200420040148U CN 2695718 Y CN2695718 Y CN 2695718Y
- Authority
- CN
- China
- Prior art keywords
- outer ring
- brake drum
- drum
- liner
- inner liner
- 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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- Braking Arrangements (AREA)
Abstract
The utility model relates to a braking device for trucks, in particular to a bi-metal brake drum which is composed of a drum, an outer ring and an inner liner. The outer ring and the inner liner are designed as a cylinder body with composite casting and the outer ring of the cylinder body cast by the composite casting is welded with the drum as an integrated part. The outer ring can also be provided with a dabber. The utility model has the advantages that the bi-metal brake drum can not only reduce the difference in temperature between the inside and the outside and the wall thickness of the brake drum, but also can prevent the sliding of the outer ring corresponding to the inner liner and the stress concentration of the inner liner at the bolt or the riveting point, which has the advantages of ameliorating the braking condition, reducing the cost, prolonging the service life of the brake drum, etc.
Description
One. technical field
The utility model relates to a kind of truck braking device, especially a kind of bimetal brake drum.
Two. background technique
Extensive use drum brake on truck, this break mainly is made up of brake drum and brake shoe, utilizes surface friction drag to make the kinetic energy of motor racing be converted into heat energy, thereby traveling automobile is slowed down or parking, to guarantee traffic safety.When the automobile heavy duty, when running at high speed, especially when lower long slope or abrupt slope, because braking force is big, and the continuous several times braking, make the brake drum inner wall temperature sharply raise, its internal-external temperature difference strengthens simultaneously, and the mechanical behavior under high temperature of brake drum material also sharply descends.The brake drum wall thickness is big more, and internal-external temperature difference is big more.Temperature difference stress adds that the mechanical behavior under high temperature of material worsens, and often causes the brake drum inwall to develop into be full of cracks by vertical fine fisssure, so that last brake drum cracking.
For addressing the above problem, normally under the prerequisite that keeps mechanical property, reduce brake drum wall thickness and internal-external temperature difference, Chinese patent CN2507723Y discloses a kind of " combined type brake drum ", it is to be inserted in an integrated type brake drum outer ring by a liner, with being assembled after the fastener bores such as screw or rivet, can play a role to reducing cracking blocked up because of the brake drum wall, that excessive temperature differentials causes.But because it is that outer ring by brake drum is to the drum carry-over moment, the moment of torsion that outer ring and interliner face transmit is bigger, easily cause the cracking that the slip of the relative liner in outer ring and liner are concentrated at the stress of screw or rivet connection place, influence braking effect and minimizing brake drum working life.
Three. summary of the invention
Task of the present utility model provides a kind of improved brake drum, it can reduce brake drum wall thickness and internal-external temperature difference, can prevent that again the slip of the relative liner in outer ring and liner from concentrating at the stress of screw or rivet connection place, thereby improve braking condition, prolong brake drum working life.
For finishing this task, the utility model carries out in the following way:
It comprises that drum, outer ring and liner form, and outer ring and liner is designed to the cylindrical body of composite casting.
The outer ring and the drum of the cylindrical body of described composite casting is integrally welded.
The utility model is because only need be designed to outer ring and liner the cylindrical body of composite casting, direct transmission braking moment, do not need with fastening pieces such as screw or rivet assembling brake drum outer ring and liner, so can prevent the slip of the relative liner in outer ring and liner concentrates at the stress of screw or rivet connection place, reduce cost, prolong brake drum working life; Owing to do not change the thin walled structures combination of intrinsic drum, liner and outer ring,, improve braking condition simultaneously so can reduce the cracking blocked up because of the brake drum wall, that excessive temperature differentials causes.
Four. description of drawings
The concrete structure of model utility is provided by the following drawings.
Fig. 1 is according to the bimetal brake drum complete section plan view that the utility model proposes.
Each sign expression in the accompanying drawing:
1. drum 2. outer rings 3. liners, 4. stiffening ribs
Five. embodiment
With reference to Fig. 1, the bimetal brake drum, it comprises drum 1, outer ring 2 and liner 3 compositions, and outer ring 2 is the cylindrical body of composite casting with liner 3, and the cylindrical body of composite casting can be a bimetal centrifugal casting.The outer ring 2 of the cylindrical body of composite casting is integrally welded with drum 1, and outer ring 2 can be that drum 1 surrounds peripheral fillet welding with the welding of drum 1.Outer ring 2 is provided with a stiffening rib 4, to increase the intensity of outer ring 2.
The cylindrical body of composite casting also can be to cast out liner 3 or Castingother method in the outer ring 2 that steel plate is made.Outer ring 2 also can be butt welding with the welding of drum 1.Also can not establish stiffening rib 4 on the outer ring 2.Though these modes are different, and are also in full force and effect.
Claims (3)
1. bimetal brake drum, it comprises: drum (1), outer ring (2) and liner (3) are formed, and it is characterized in that outer ring (2) and liner (3) are the cylindrical body of composite casting.
2. bimetal brake drum according to claim 1 is characterized in that the outer ring (2) of the cylindrical body of described composite casting and drum (1) are integrally welded.
3. bimetal brake drum according to claim 1 and 2 is characterized in that described outer ring (2) is provided with a stiffening rib (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420040148 CN2695718Y (en) | 2004-04-20 | 2004-04-20 | Bi-metal brake drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420040148 CN2695718Y (en) | 2004-04-20 | 2004-04-20 | Bi-metal brake drum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2695718Y true CN2695718Y (en) | 2005-04-27 |
Family
ID=34774190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420040148 Expired - Fee Related CN2695718Y (en) | 2004-04-20 | 2004-04-20 | Bi-metal brake drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2695718Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102472340A (en) * | 2009-07-06 | 2012-05-23 | 克诺尔商用车制动系统有限公司 | Brake drum implemented as a casting |
| CN102678792A (en) * | 2011-03-07 | 2012-09-19 | 帝伯爱尔株式会社 | Brake drum |
| CN101634348B (en) * | 2008-07-24 | 2013-03-06 | 通用汽车环球科技运作公司 | Friction damped brake drum |
-
2004
- 2004-04-20 CN CN 200420040148 patent/CN2695718Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101634348B (en) * | 2008-07-24 | 2013-03-06 | 通用汽车环球科技运作公司 | Friction damped brake drum |
| CN102472340A (en) * | 2009-07-06 | 2012-05-23 | 克诺尔商用车制动系统有限公司 | Brake drum implemented as a casting |
| US8833530B2 (en) | 2009-07-06 | 2014-09-16 | Knorr-Bremse Systeme Fuer Nutzfahrzeuge Gmbh | Brake drum implemented as a casting and method of making same |
| CN102472340B (en) * | 2009-07-06 | 2014-12-03 | 克诺尔商用车制动系统有限公司 | Brake drum implemented as a casting |
| CN102678792A (en) * | 2011-03-07 | 2012-09-19 | 帝伯爱尔株式会社 | Brake drum |
| CN102678792B (en) * | 2011-03-07 | 2016-08-17 | 帝伯爱尔株式会社 | Brake drum |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: FUJIAN CHANGFENG CAR BRIDGES MANUFACTURING CO., LT Free format text: FORMER NAME OR ADDRESS: LONGYAN CHEONG FUNG MACHINERY MANUFACTURING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Longyan Economic Development Zone, Fujian Province, China: 364000 Patentee after: Fujian Changfeng Axle Manufacturing Co., Ltd. Address before: Zip Dong Xiao town in Fujian province Longyan city Xinluo District Huang Bangshan Longyan economic and Technological Development Zone, 364000 Patentee before: Longyan Changfeng Machinery Manufacturing Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050427 Termination date: 20130420 |