CN103343791A - Drum brake structure - Google Patents
Drum brake structure Download PDFInfo
- Publication number
- CN103343791A CN103343791A CN2013102998889A CN201310299888A CN103343791A CN 103343791 A CN103343791 A CN 103343791A CN 2013102998889 A CN2013102998889 A CN 2013102998889A CN 201310299888 A CN201310299888 A CN 201310299888A CN 103343791 A CN103343791 A CN 103343791A
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- Prior art keywords
- brake drum
- flange
- oral area
- drum
- thickness
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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 drum brake structure which comprises a flange portion, a bottom portion, a drum portion and an opening portion. The flange portion is connected with a flange plate of a hub and the bottom portion is connected with the flange portion and the drum portion. The drum brake structure is characterized in that a plurality of hollow portions are arranged on the flange portion, the wall thickness of each hollow portion is smaller than that of the flange portion, and the thickness of the opening portion is 1.7-2 times as much as the average thickness of the drum portion. The top of a drum brake is reinforced, the opening portion is of material stacking and moving design, the wall thickness of the region of stress concentration is enhanced through finite element analysis, hollow thickness-reduction design is conducted on the position near an installation region of a flush bolt at the top, and the drum body middle portion of the drum brake serves as a dynamic balance weight removing region. The weight of the drum brake is kept unchanged, the overall strength is increased and the structure is more reasonable.
Description
Technical field
The present invention relates to trailer semitrailer component technical field, specifically, relate to a kind of brake drum structure.
Background technique
Brake drum is one of automobile important spare part, it acts on the automobile antero posterior axis, is not only the braking ability that influences automobile, and affects the degree of balance of wheel, the structural design of brake drum and quality of processing, safe, comfortable, durable, the low noise levels of direct relation automobile.Structural Strength Design and dynamic balancing are the important performance index of brake drum, if uneven, will produce vibration in automobile running, and the steering wheel shake causes automobile to be difficult to control, and safety coefficient is low, influences vehicle safety.
Brake drum connects wheel hub, usually with six countersunk screws wheel hub is connected with brake drum, brake drum outside, wheel hub is interior, wheel hub and brake drum end face are contacted, and rotate with brake drum, when the long-term heavy service of automobile, when perhaps on the relatively poor road of the road conditions of being everlasting, travelling, brake drum can be caused damage even break.Brake shoe is strutted the inwall of brake drum during the brake drum braking, thereby nonstandard brake behavior, can cause brake drum hot crack or brake drum distortion as long-time braking, the capital causes the brake drum injury to need to change, therefore, except require to carry in accordance with regulations with sincere advice such as standard brake, the manufacturer of brake drum still need strengthen the mechanical property of brake drum.
Summary of the invention
The object of the present invention is to provide a kind of the maintenance to make improvements under the constant prerequisite of original weight, make its reasonable integral structure, guarantee to remove heavy brake drum structure in the middle part of the dynamic balancing.
Technological scheme of the present invention is: brake drum structure, comprise flange part, bottom, tympanic part and oral area, flange part is connected with the flange plate of wheel hub, bottom adpting flange portion and tympanic part, it is characterized in that: a plurality of hollow part are set on the described flange part, the wall thickness of hollow part is less than the flange part wall thickness, and the thickness of described oral area is 1.7-2 times of tympanic part average thickness.
The height of described oral area is 43-46mm.
Dynamic balancing goes to heavy central position from oral area exterior edge face 110mm, goes the heavy degree of depth less than 2mm.
The end face of described oral area keeps rough behind casting.
The present invention compared with prior art, its beneficial effect is:
The present invention strengthens at the top of brake drum, oral area material heap moves design, strengthen wall thickness through finite element analysis counter stress concentrated area, near the mounting zone of top countersunk screw, do the design of hollow out attenuate, and go to heavy zone at the bulging body middle part of brake drum as dynamic balancing.Brake drum weight is remained unchanged, but the bulk strength increase, structure is more reasonable.
By changing the locations of structures of casting die upper and lower mould mold joint, does not reprocess the oral area exterior edge face of brake drum foundry goods of the present invention, has changed the technology that former brake drum need cut the exterior edge face, improves brake drum oral area exterior edge face mechanical property.
By above improvement, brake drum wear limit of the present invention improves 20% than existing brake drum.
Description of drawings
Fig. 1 is brake drum structure schematic representation of the present invention.
Fig. 2 is brake drum structure sectional view of the present invention.
Embodiment
Below pass through embodiment, and the invention will be further described by reference to the accompanying drawings.
As shown in Figure 1 and Figure 2, brake drum 1 of the present invention comprises flange part 6, bottom 7, tympanic part 8 and oral area 4, flange part 6 is connected with the flange plate of wheel hub, bottom 7 adpting flange portions 6 and tympanic part 8, the joint is with arc transition, oral area 4 connects tympanic part 8, oral area 4 is openings of brake drum, brake drum is formed by casting manufacturing, therefore the upper and lower mould mold joint of existing brake drum casting die is located on the oral area,, for overall appearance, after blank processes, also need the outer surface cutting to oral area, end face is scabbled, thereby weakened the intensity of oral area.Given this, the present invention is located at the end face of oral area outer rim mouth at the upper and lower mould mold joint of brake drum rough-cast mould, and rough casting oral area outer surface is not processed, and keeps the external layer of casting density uniform and delicate, improves oral area intensity.
Maintain an equal level for the intensity that improves brake drum keeps gross weight and existing product simultaneously, the architecture advances of brake drum of the present invention is embodied in following a few part:
The local reinforcement designed.Brake drum of the present invention has been thickeied the thickness of flange part 6, bottom 7, flange part 6, bottom 7 thickness are had more than the 14.5mm, specifically the intersection in flange part 6 and bottom 7 is thickened area 5, the thickness of oral area 4 is 1.7-2 times of tympanic part 8 average thickness, the height of oral area 4 is 43-46mm, be brake drum height 1/6-1/7 between, dynamic balancing goes to heavy central position from oral area exterior edge face 110mm, goes the heavy degree of depth less than 2mm.
The interior edge face of brake drum 1 flange part 6 is connected with the wheel hub end face, evenly five equilibrium arranges a plurality of bolt mounting holes 3 on flange part 6, between adjacent bolt mounting holes 3, also be provided with hollow part 2, hollow part 2 is for wall thickness reduction designs, and the hollow out degree of depth is 4-5mm, is about half of flange part 6 thickness.At flange part hollow out attenuate, can reduce the brake drum overall weight, and through finite element analysis, pretightening force about 20 tons (T) owing to the countersunk screw of installing in flange part 6, therefore, the powerful combination force that ten countersunk screws produce is enough to make the flanged surface of brake drum and wheel hub to form an integral body, be intensity effect that brake drum 1 flange part 6 produces is added the flange plate of wheel hub by brake drum 1 flange part 6 thickness and the coefficient result of countersunk screw, therefore, in brake drum 1 flange part 6 hollow part 2 is set evenly and not only goes heavily, and the intensity at this position is enough.
Claims (4)
1. brake drum structure, comprise flange part, bottom, tympanic part and oral area, flange part is connected with the flange plate of wheel hub, bottom adpting flange portion and tympanic part, it is characterized in that: a plurality of hollow part are set on the described flange part, the wall thickness of hollow part is less than the flange part wall thickness, and the thickness of described oral area is 1.7-2 times of tympanic part average thickness.
2. brake drum structure according to claim 1, it is characterized in that: the height of described oral area is 43-46mm.
3. brake drum structure according to claim 1 is characterized in that: dynamic balancing goes to heavy central position from oral area exterior edge face 110mm, goes the heavy degree of depth less than 2mm.
4. brake drum structure according to claim 1, it is characterized in that: the end face of described oral area keeps rough behind casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102998889A CN103343791A (en) | 2013-07-17 | 2013-07-17 | Drum brake structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102998889A CN103343791A (en) | 2013-07-17 | 2013-07-17 | Drum brake structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103343791A true CN103343791A (en) | 2013-10-09 |
Family
ID=49278611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102998889A Pending CN103343791A (en) | 2013-07-17 | 2013-07-17 | Drum brake structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103343791A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257739A (en) * | 2015-10-29 | 2016-01-20 | 山东浩信机械有限公司 | Brake drum |
| CN105736609A (en) * | 2016-05-04 | 2016-07-06 | 山东浩信机械有限公司 | Brake drum |
| CN108412920A (en) * | 2018-03-30 | 2018-08-17 | 东风商用车有限公司 | Brake drum |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679418Y (en) * | 2004-03-22 | 2005-02-16 | 中国重型汽车集团有限公司 | Brake drum of heavy lorry |
| CN201293057Y (en) * | 2008-10-31 | 2009-08-19 | 青特集团有限公司 | Shaft support bridge brake drum |
| CN101600608A (en) * | 2006-09-11 | 2009-12-09 | 韦伯车轮产品有限公司 | The lightweight brake drum that has the line of centers squealer band |
| CN201362243Y (en) * | 2009-03-11 | 2009-12-16 | 刘开进 | Wheel brake of power-driven or man-power tricycle |
| CN201368161Y (en) * | 2009-02-18 | 2009-12-23 | 中国重汽集团济南动力有限公司 | Brake drum for driving axle of heavy automobile specially used for industrial and mining vehicles |
| CN201507584U (en) * | 2009-06-30 | 2010-06-16 | 刘其顺 | Parking brake drum |
| WO2011003863A1 (en) * | 2009-07-06 | 2011-01-13 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Brake drum implemented as a casting |
| CN202301602U (en) * | 2011-08-04 | 2012-07-04 | 诸城市义和车桥有限公司 | Plum-blossom-shaped flange front braking hub of commercial vehicle |
| CN203381610U (en) * | 2013-07-17 | 2014-01-08 | 广东富华工程机械制造有限公司 | Detachment prevention structure for hub brake drum |
-
2013
- 2013-07-17 CN CN2013102998889A patent/CN103343791A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2679418Y (en) * | 2004-03-22 | 2005-02-16 | 中国重型汽车集团有限公司 | Brake drum of heavy lorry |
| CN101600608A (en) * | 2006-09-11 | 2009-12-09 | 韦伯车轮产品有限公司 | The lightweight brake drum that has the line of centers squealer band |
| CN201293057Y (en) * | 2008-10-31 | 2009-08-19 | 青特集团有限公司 | Shaft support bridge brake drum |
| CN201368161Y (en) * | 2009-02-18 | 2009-12-23 | 中国重汽集团济南动力有限公司 | Brake drum for driving axle of heavy automobile specially used for industrial and mining vehicles |
| CN201362243Y (en) * | 2009-03-11 | 2009-12-16 | 刘开进 | Wheel brake of power-driven or man-power tricycle |
| CN201507584U (en) * | 2009-06-30 | 2010-06-16 | 刘其顺 | Parking brake drum |
| WO2011003863A1 (en) * | 2009-07-06 | 2011-01-13 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Brake drum implemented as a casting |
| CN202301602U (en) * | 2011-08-04 | 2012-07-04 | 诸城市义和车桥有限公司 | Plum-blossom-shaped flange front braking hub of commercial vehicle |
| CN203381610U (en) * | 2013-07-17 | 2014-01-08 | 广东富华工程机械制造有限公司 | Detachment prevention structure for hub brake drum |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105257739A (en) * | 2015-10-29 | 2016-01-20 | 山东浩信机械有限公司 | Brake drum |
| CN105736609A (en) * | 2016-05-04 | 2016-07-06 | 山东浩信机械有限公司 | Brake drum |
| CN108412920A (en) * | 2018-03-30 | 2018-08-17 | 东风商用车有限公司 | Brake drum |
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Application publication date: 20131009 |