CN104595393A - Presplitting drum brake - Google Patents
Presplitting drum brake Download PDFInfo
- Publication number
- CN104595393A CN104595393A CN201510016496.6A CN201510016496A CN104595393A CN 104595393 A CN104595393 A CN 104595393A CN 201510016496 A CN201510016496 A CN 201510016496A CN 104595393 A CN104595393 A CN 104595393A
- Authority
- CN
- China
- Prior art keywords
- crack
- brake drum
- braking part
- transition connection
- connection portion
- 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.)
- Granted
Links
- 230000007704 transition Effects 0.000 claims abstract description 40
- 238000005266 casting Methods 0.000 claims abstract description 8
- 238000005516 engineering process Methods 0.000 claims description 12
- 238000004080 punching Methods 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 229920001971 elastomer Polymers 0.000 abstract description 3
- 239000000806 elastomer Substances 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract 2
- 239000010959 steel Substances 0.000 abstract 2
- 230000003139 buffering effect Effects 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 6
- 230000008961 swelling Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910001060 Gray iron Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention discloses a presplitting drum brake, which comprises a drum brake body which is molded by casting, wherein the drum brake body comprises a mounting part and a braking part; a transition connection part is arranged between the mounting part and the braking part; a crack which penetrates through the wall thickness of the braking part is arranged on the braking part; the crack extends from one end part which is far away from the transition connection part to the transition connection part; a plurality of steel hoops which are axially arrayed and are in interference fit with the braking part sleeve the periphery of the braking part. The drum brake body is presplit by the crack to form an elastomer, the stress effect is improved, and the resistance buffering impact force is enhanced; meanwhile, the drum brake body only bears the rotation friction braking force; when the drum brake body is heated and strong tension force acts, the crack is capable of eliminating the expansion stress in time, and the fracturing phenomenon is reduced. The brake tension force is borne by the steel hoops, and the strength of extension and the anti-deformation rigidity of the drum brake are enhanced. Due to the adoption of the drum brake, the structural intensity and the mechanical performance are improved, the service life of the drum brake is prolonged, the radiating performance is good, and the use safety is high.
Description
Technical field
The invention belongs to brake system of car technical field, particularly relate to presplitting formula brake drum.
Background technique
Braking system is one of important composition system of automobile, and at present, in truck field, widely used is adopt traditional cast inblock drum brake.
Present stage, typical drum brake comprises brake drum and brake shoe composition, and brake shoe can contact with the inner side surface of brake drum.Brake drum is in rotary state in vehicle traveling process, and when needs brake, brake shoe presses under the action of the braking force on brake drum, utilizes the surface friction drag between brake drum, thus makes car deceleration or the parking of traveling, to ensure traffic safety.
When automobile heavy-load, run at high speed time, especially when lower long slope or abrupt slope, owing to needing the braking of larger braking force and continuous several times to ensure that automobile is in controllable state, brake drum inner wall temperature is sharply raised, the internal-external temperature difference of brake drum strengthens, cause the mechanical behavior under high temperature forming brake drum material sharply to decline, fatigue strength reduces.Because traditional brake drum material is gray cast iron, gray cast iron has the typical characteristics that intensity is low, fragility is large, and in order to reduce the negative effect that these characteristics are brought, the wall thickness of brake drum must do very thick, to ensure that brake drum has higher structural strength.But the wall thickness of brake drum is larger, internal-external temperature difference during brake drum braking is larger, the temperature difference strengthens the temperature difference stress caused and adds that the mechanical behavior under high temperature of material worsens, simultaneously, the swelling stress produced during brake drum braking can not get timely elimination, and then cause brake drum inwall to develop into be full of cracks by longitudinal fine fisssure, so that last brake drum cracking.Therefore, traditional cast-in-block brake drum is shorter for working life.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of presplitting formula brake drum, realizes eliminating swelling stress in time, reduces the generation of crack performance, reaches the object improving working life.
For solving the problems of the technologies described above, the technological scheme of the embodiment of the present invention is: presplitting formula brake drum, comprise the brake drum body of casting, described brake drum body comprises the assembly department for being connected with wheel and the braking part for coordinating with brake shoe, is provided with transition connection portion between described assembly department and described braking part;
Described braking part is provided with the crack running through described braking part wall thickness, and described crack extends in described transition connection portion from the end, one end away from described transition connection portion;
The outer race of described braking part some axially-aligned are housed and with the stirrup of described braking part interference fit.
Improve as one, described crack circular array shows several; Described transition connection portion is provided with several through holes, and described through hole and described crack one_to_one corresponding arrange and be interconnected.
As further improvement, described crack is stamping forming lineal shape crack.
As further improving, have the technology groove of being convenient to carry out punching press with casting in the described braking part of described crack corresponding position and described transition connection portion, described technology groove is communicated with described through hole.
As further improvement, described crack is the shaping zigzag crevasse of Linear cut or waveform crack.
As further improving, described stirrup comprises the first hoop body of axially-aligned, away from the described braking part of described transition connection portion one end is being provided with the second hoop body between the first hoop body described in adjacent two; The outer ring of described first hoop body is provided with the annular groove consistent with described first hoop body bearing of trend.
As further improving again, the width of described first hoop body is greater than the width of described second hoop body; The external diameter of described first hoop body is less than the external diameter of described second hoop body.
As further improving again, the external diameter of described transition connection portion near described braking part one end is greater than the external diameter of described braking part, and described first hoop body leans in described transition connection portion.
As further improving again, in described transition connection portion, annular array has some stiffening ribs.
Owing to have employed technique scheme, the beneficial effect of the embodiment of the present invention is:
Because braking part is provided with the crack extending to transition connection portion from the end away from transition connection portion one end, that is: brake drum body is split in advance and form an elastomer, both improving stressed effect, in turn enhancing the characteristic of slow resistance impact force; Meanwhile, brake drum body no longer bears brake expanding force, only bears spin friction brake weight; And, compared with the brake drum of conventional construction, brake drum body (that is: braking part) be heated and powerful expanding force effect time, crack can eliminate swelling stress in time, in brake drum body, the axial crack performance of table reduces greatly, and be full of cracks does not exist unrestricted growth conditions; In addition, by crack to brake drum body brake time produce thermal stress conduction and release lay a good foundation.Due to the stirrup that the peripheral interference fit of braking part has, thus bear main large load (that is: brake expanding force) by stirrup; Meanwhile, enhance tensile strength and the resistance rigidity of this brake drum, make stressed and resistance become more reasonable.In sum, adopt this brake drum to improve structural strength and mechanical property, effectively extend the working life of brake drum, and thermal diffusivity is good, safe to use.
Because through hole and crack are interconnected, thus carry out the moment of peptizaiton at brake drum body cracking place by through hole, avoid stress concentrate and damage brake drum body.
Because crack is lineal shape crack, structure is simple, is convenient to processing.
Owing to having technology groove with casting in the braking part and transition connection portion of crack corresponding position, thus be convenient to carry out punching press crack by technology groove, ensure that the shaping linarity of punching precision and crack.
Because crack is zigzag crevasse, thus ensure that brake drum body place of splitting has good conformability by zigzag crevasse.
Because stirrup comprises the first hoop body and the second hoop body, and the first hoop body is provided with annular groove, thus substantially increases the radiating effect of this structure brake drum by the first hoop body, coordinates simultaneously improve structural strength and bearing capacity with the second hoop body.
Width due to the first hoop body is greater than the width of the second hoop body, thus further increases radiating effect; External diameter due to the first hoop body is less than the external diameter of the second hoop body, thus further increases structural strength and bearing capacity.
Because annular array in transition connection portion has some stiffening ribs, thus further increase the structural strength of brake drum body by stiffening rib.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention one;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the sectional view of A-A in Fig. 1;
Fig. 4 is the structural representation of the embodiment of the present invention two;
Fig. 5 is the left view of Fig. 4;
Fig. 6 is the sectional view of B-B in Fig. 4;
Fig. 7 is the structural representation of the embodiment of the present invention three;
Fig. 8 is the left view of Fig. 7;
Fig. 9 is the sectional view of C-C in Fig. 7;
In figure, 1-brake drum body; 101-assembly department; 102-transition connection portion; 103-braking part; 104-technology groove; 2-crack; 3-through hole; 4-first hoop body; 401-annular groove; 5-second hoop body; 6-stiffening rib.
Embodiment
In order to make object of the present invention, technological scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Embodiment one:
As Fig. 1 to Fig. 3 jointly shown in, presplitting formula brake drum comprises the brake drum body 1 of casting, and this brake drum body 1 comprises the assembly department 101 for being connected with wheel and the braking part 103 for coordinating with brake shoe, and this assembly department 101 is flange plate; Be provided with transition connection portion 102 between this assembly department 101 and braking part 103, the external diameter of this transition connection portion 102 near braking part 103 one end is greater than the external diameter of braking part 103;
In this braking part 103, annular array has several to run through the crack 2 of braking part 103 wall thickness, this crack 2 extends in transition connection portion 102 from the end, one end away from transition connection portion 102, be equipped with a through hole 3 with in the transition connection portion 102 of every crack 2 corresponding position, this through hole 3 is communicated with crack 2;
The outer race of this braking part 103 some axially-aligned are housed and with the stirrup of braking part 103 interference fit.
Have with casting in transition connection portion 102 technology groove 104 be communicated with through hole 3 with the braking part 103 of crack 2 corresponding position, this crack 2 is by stamping forming lineal shape crack in technology groove 104.
This stirrup comprises the first hoop body 4 of axially-aligned, the outer ring of this first hoop body 4 is provided with the annular groove 401 (that is: the sectional shape of first hoop body 4 be U-shaped) consistent with the first hoop body 4 bearing of trend, and the first hoop body 4 near transition connection portion 102 leans in transition connection portion 102; Away from the braking part 103 of transition connection portion 102 one end is provided with the second hoop body 5 between adjacent two first hoop bodies 4, be specially: from transition connection portion 102 place of leaning axially-aligned have three the first hoop bodies 4, be arranged with spaced three afterwards to the second hoop body 5 and the first hoop body 4, the second all hoop bodies 5 and the first hoop body 4 lean mutually.
The width of this first hoop body 4 is greater than the width of the second hoop body 5; The external diameter of this first hoop body 4 is less than the external diameter of the second hoop body 5; Wherein, the first hoop body 4 leaned with transition connection portion 102, the external diameter leaning side is less than the external diameter of opposite side.Thus under the condition meeting assembly technology, improve thermal diffusivity, and structural strength is high, bearing capacity is large.
In this transition connection portion 102, annular array has some stiffening ribs 6.
Embodiment two:
As Fig. 4 to Fig. 6 jointly shown in, the concrete structure of the present embodiment is identical with the structure of embodiment one, its difference is: do not arrange technology groove 104 with corresponding part, crack 2, this crack 2 is the shaping zigzag crevasse of Linear cut, the two ends of this zigzag crevasse extend respectively in a linear fashion, the end of braking part 103 is run through in one end, and the other end is communicated with through hole 3.
This crack 2 also can be waveform crack, or can realize as those skilled in the art and not affect the other forms of crack that this brake drum normally works.
Embodiment three:
As Fig. 7 to Fig. 9 jointly shown in, the concrete structure of the present embodiment is identical with the structure of embodiment two, and its difference is: do not arrange stiffening rib 6 in transition connection portion 102.
In like manner, the transition connection portion 102 in embodiment one being arranged stiffening rib 6 is the preferred of this programme, also can not arrange stiffening rib 6.
In actual applications, because braking part 103 is provided with the crack 2 extending to transition connection portion 102, that is: brake drum body 1 split in advance and form an elastomer, both improving stressed effect, in turn enhancing the characteristic of slow resistance impact force; Meanwhile, brake drum body 1 no longer bears brake expanding force, only bears spin friction brake weight; And, compared with the brake drum of conventional construction, brake drum body 1 (that is: braking part 103) be heated and powerful expanding force effect time, crack 2 can eliminate swelling stress in time, in brake drum body 1, the axial crack performance of table reduces greatly, and be full of cracks does not exist unrestricted growth conditions; In addition, the thermal stress produced when braking by 2 pairs, crack brake drum body 1 is conducted and release is laid a good foundation.Due to the stirrup that the peripheral interference fit of braking part 103 has, thus bear main large load (that is: brake expanding force) by stirrup; Meanwhile, enhance tensile strength and the resistance rigidity of this brake drum, make stressed and resistance become more reasonable.In sum, adopt this brake drum to improve structural strength and mechanical property, effectively extend the working life of brake drum, and thermal diffusivity is good, safe to use.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. presplitting formula brake drum, comprise the brake drum body of casting, it is characterized in that, described brake drum body comprises the assembly department for being connected with wheel and the braking part for coordinating with brake shoe, is provided with transition connection portion between described assembly department and described braking part;
Described braking part is provided with the crack running through described braking part wall thickness, and described crack extends in described transition connection portion from the end, one end away from described transition connection portion;
The outer race of described braking part some axially-aligned are housed and with the stirrup of described braking part interference fit.
2. presplitting formula brake drum according to claim 1, is characterized in that, described crack circular array shows several; Described transition connection portion is provided with several through holes, and described through hole and described crack one_to_one corresponding arrange and be interconnected.
3. presplitting formula brake drum according to claim 2, is characterized in that, described crack is stamping forming lineal shape crack.
4. presplitting formula brake drum according to claim 3, is characterized in that, have the technology groove of being convenient to carry out punching press with casting in the described braking part of described crack corresponding position and described transition connection portion, described technology groove is communicated with described through hole.
5. presplitting formula brake drum according to claim 2, is characterized in that, described crack is the shaping zigzag crevasse of Linear cut or waveform crack.
6. the presplitting formula brake drum according to the arbitrary claim of claim 1-5, it is characterized in that, described stirrup comprises the first hoop body of axially-aligned, away from the described braking part of described transition connection portion one end is being provided with the second hoop body between the first hoop body described in adjacent two; The outer ring of described first hoop body is provided with the annular groove consistent with described first hoop body bearing of trend.
7. presplitting formula brake drum according to claim 6, is characterized in that, the width of described first hoop body is greater than the width of described second hoop body; The external diameter of described first hoop body is less than the external diameter of described second hoop body.
8. presplitting formula brake drum according to claim 7, is characterized in that, the external diameter of described transition connection portion near described braking part one end is greater than the external diameter of described braking part, and described first hoop body leans in described transition connection portion.
9. presplitting formula brake drum according to claim 8, it is characterized in that, in described transition connection portion, annular array has some stiffening ribs.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016496.6A CN104595393B (en) | 2015-01-13 | 2015-01-13 | Presplitting formula brake drum |
| PCT/CN2015/078529 WO2016112604A1 (en) | 2015-01-13 | 2015-05-08 | Brake drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510016496.6A CN104595393B (en) | 2015-01-13 | 2015-01-13 | Presplitting formula brake drum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104595393A true CN104595393A (en) | 2015-05-06 |
| CN104595393B CN104595393B (en) | 2018-05-04 |
Family
ID=53121361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510016496.6A Active CN104595393B (en) | 2015-01-13 | 2015-01-13 | Presplitting formula brake drum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104595393B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105351403A (en) * | 2015-11-26 | 2016-02-24 | 成都九十度工业产品设计有限公司 | High heat dissipation type brake drum |
| WO2016033991A1 (en) * | 2014-09-01 | 2016-03-10 | 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 |
| WO2016112604A1 (en) * | 2015-01-13 | 2016-07-21 | 山东浩信机械有限公司 | Brake drum |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2820189A1 (en) * | 1978-05-09 | 1979-11-22 | Teves Gmbh Alfred | Thermally compensated brake drum - has inwardly inclined brake surface which deflects to bend outwardly on warming |
| CN201050565Y (en) * | 2007-06-12 | 2008-04-23 | 王华才 | Braking hub with outer tensile ring |
| CN204082997U (en) * | 2014-09-01 | 2015-01-07 | 山东浩信机械有限公司 | Annular groove steel loop brake drum |
| CN204082998U (en) * | 2014-09-12 | 2015-01-07 | 山东浩信机械有限公司 | Ring muscle brake drum |
| CN204458928U (en) * | 2015-01-13 | 2015-07-08 | 山东浩信机械有限公司 | Presplitting formula brake drum |
-
2015
- 2015-01-13 CN CN201510016496.6A patent/CN104595393B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016033991A1 (en) * | 2014-09-01 | 2016-03-10 | 山东浩信机械有限公司 | Brake drum |
| WO2016112604A1 (en) * | 2015-01-13 | 2016-07-21 | 山东浩信机械有限公司 | Brake drum |
| CN105351403A (en) * | 2015-11-26 | 2016-02-24 | 成都九十度工业产品设计有限公司 | High heat dissipation type brake drum |
| CN105351403B (en) * | 2015-11-26 | 2017-09-15 | 成都九十度工业产品设计有限公司 | A kind of heat dissipation type high brake drum |
| CN105736609A (en) * | 2016-05-04 | 2016-07-06 | 山东浩信机械有限公司 | Brake drum |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104595393B (en) | 2018-05-04 |
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Legal Events
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
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Denomination of invention: Presplitting brake drum Effective date of registration: 20211022 Granted publication date: 20180504 Pledgee: China Construction Bank Corporation Changyi sub branch Pledgor: SHANDONG HAOXIN MACHINERY Co.,Ltd. Registration number: Y2021980011149 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230103 Granted publication date: 20180504 Pledgee: China Construction Bank Corporation Changyi sub branch Pledgor: SHANDONG HAOXIN MACHINERY Co.,Ltd. Registration number: Y2021980011149 |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 261307 south head of Weizi Town, Changyi City, Weifang City, Shandong Province Patentee after: Shandong Haoxin Machinery Co.,Ltd. Country or region after: China Address before: 261307 Hao Xin Industrial Park, Weizi Town, Changyi City, Weifang, Shandong Patentee before: SHANDONG HAOXIN MACHINERY Co.,Ltd. Country or region before: China |