CN104455107A - Novel drum brake - Google Patents
Novel drum brake Download PDFInfo
- Publication number
- CN104455107A CN104455107A CN201310437614.1A CN201310437614A CN104455107A CN 104455107 A CN104455107 A CN 104455107A CN 201310437614 A CN201310437614 A CN 201310437614A CN 104455107 A CN104455107 A CN 104455107A
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- China
- Prior art keywords
- brake
- return spring
- brake shoe
- spring
- braking
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Abstract
The invention provides a novel drum brake. According to the technical scheme, the novel drum brake comprises a return spring main body, a brake shoe retaining spring, a brake base plate, a left brake shoe and a right brake shoe, wherein the left brake shoe and the right brake shoe are symmetrically distributed on the brake base plate, and a brake camshaft penetrates through a shaft hole in the brake base plate to be in contact with idler wheels at one end of the left brake shoe and one end of the right brake shoe. The novel drum brake is characterized by further comprising a return spring auxiliary body, the two ends of the return spring auxiliary body are connected with the left brake shoe and the right brake shoe respectively, an opening groove is formed in the brake base plate, and the boundary dimension of the opening groove is matched with the boundary dimension of the return spring auxiliary body. According to the novel drum brake, on the premise that installation of other parts is not affected, brake return force is increased by additionally arranging the return spring auxiliary body between the two brake shoes, it is guaranteed that the brake returns to the original position rapidly after braking, dragging friction of the brake is greatly reduced, the reliability of a whole bridge is further improved, and the novel drum brake is advanced and practical to a certain degree and has great promotional and use value.
Description
Technical field
What the present invention relates to is break technical field, especially a kind of drum brake with higher braking returning place force.
Background technique
Drum brake is a kind of comparatively traditional break, and because it has low price, the advantages such as braking ability is good are still widely used.Traditional drum brake generally comprises braking bottom board, two panels brake shoe, brake camshaft and Returnning spring etc.; Roller is provided with in the end of brake shoe.Drum brake is when braking operation, and the roller being promoted brake shoe end by brake camshaft makes brake shoe expand outwardly, and compressing support is risen inside brake hub, the friction facing outside brake hub internal surface and brake shoe is produced and rubs, force wheel to stop operating.
The heavy-duty car drum brake of current use, there is the problems such as return spring returning place force is less than normal, in use can produce the phenomenons such as braking return is slow, braking is dawdled, and then cause wheel limit radiating effect poor, serious meeting has influence on the use of car load, even can produce security incident, this is the deficiency existing for prior art.
Summary of the invention
Technical problem to be solved by this invention, be exactly for the deficiency existing for prior art, and a kind of technological scheme of drum brake is provided, the program is under the prerequisite not changing original brake part rigging position, a pair return spring auxiliary spring is increased between two brake shoes, solve the problem that in prior art, after brake shoe braking, return is slow, can returning quickly after brake shoe braking in using process, significantly reduce break to dawdle the generation of phenomenon, effective reduction drum brake fever phenomenon, further increases the reliability of whole bridge.
This programme is achieved by the following technical measures: a kind of drum brake, comprise the main spring of return spring, brake shoe keep-spring, braking bottom board, be symmetrically distributed in left brake shoe on braking bottom board and right braking hoof, brake camshaft is through the roller contact of the axis hole on braking bottom board and left brake shoe and right braking hoof one end, the feature of this programme is: also comprise return spring auxiliary spring, the two ends of return spring auxiliary spring are connected with left brake shoe and right braking hoof respectively, described braking bottom board have the opening slot adapted with the boundary dimension of return spring auxiliary spring.
The feature of this programme also has, and the main spring of described return spring has one, and the two ends of the main spring of this return spring are hung in the upper end of described left brake shoe and right braking hoof; Described brake shoe keep-spring has one, and the two ends of this brake shoe keep-spring are hung in the lower end of described left brake shoe and right braking hoof; The main spring of described return spring is positioned at the bottom of described brake camshaft; Described left brake shoe is provided with two return spring auxiliary spring fixed holes, and described right braking hoof is provided with two return spring auxiliary spring fixed holes; Described return spring auxiliary spring has two and is parallel to each other, and is all horizontally through the upper area of described brake camshaft, and the two ends of described return spring auxiliary spring lay respectively in the return spring auxiliary spring fixed hole of left brake shoe and right braking hoof; Described opening slot is positioned at the top of the axis hole of described braking bottom board.
The beneficial effect of this programme can be learnt according to describing of such scheme, owing to comprising the main spring of return spring in this scenario, brake shoe keep-spring, braking bottom board, be symmetrically distributed in the left brake shoe on braking bottom board and right braking hoof, brake camshaft is through the roller contact of the axis hole on braking bottom board and left brake shoe and right braking hoof one end, also comprise return spring auxiliary spring, the two ends of return spring auxiliary spring are connected with left brake shoe and right braking hoof respectively, the returning place force of brake shoe can be significantly improved by increasing return spring auxiliary spring, the generation of the phenomenon and remarkable reduction break is dawdled of returning quickly after in use can realizing brake shoe braking, reduce the fever phenomenon of drum brake, described braking bottom board there is the opening slot adapted with the boundary dimension of return spring auxiliary spring, ensure that return spring auxiliary spring has enough spaces normally to work.Structural design advantages of simple of the present invention, simply, each return spring is easy for installation, good braking effect, has very large popularizing value for opening slot and return spring auxiliary spring fixed hole technique.As can be seen here, compared with prior art, have outstanding substantive distinguishing features and significant progress, its beneficial effect implemented also is apparent in the present invention.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment of the invention.
Fig. 2 is the plan view of Fig. 1.
Fig. 3 is the structural representation of braking bottom board.
Fig. 4 is the structural representation of brake shoe.
In figure, 1 is left brake shoe, and 2 is brake camshaft, and 3 is return spring auxiliary spring, and 4 is the main spring of return spring, and 5 is brake shoe keep-spring, and 6 is braking bottom board, and 7 is opening slot, and 8 is return spring auxiliary spring fixed hole, and 9 is axis hole, and 10 is right braking hoof, and 11 is roller.
Embodiment
For the technical characterstic of this programme can be clearly demonstrated, below by an embodiment, and in conjunction with its accompanying drawing, this programme is set forth.
Can be found out by accompanying drawing, a kind of drum brake of this programme, comprise braking bottom board 6, be symmetrically distributed in left brake shoe 1 on braking bottom board 6 and right braking hoof 10, brake camshaft 2 contacts with the roller 11 of left brake shoe 1 with right braking hoof 10 one end through the axis hole 9 on braking bottom board 6; Comprise a main spring 4 of return spring, the two ends of the main spring of this return spring 4 are hung in the upper end of described left brake shoe 1 and right braking hoof 10, and the main spring of return spring 4 is also positioned at the bottom of described brake camshaft 2; Comprise a brake shoe keep-spring 5, the two ends of this brake shoe keep-spring 5 are hung in the lower end of described left brake shoe 1 and right braking hoof 10; Also comprise two return spring auxiliary springs 3, two return spring auxiliary springs 3 are parallel to each other, all be horizontally through the upper area of described brake camshaft 2, described left brake shoe 1 is provided with two return spring auxiliary spring fixed holes 8, described right braking hoof 10 is provided with two return spring auxiliary spring fixed holes 8, the two ends of return spring auxiliary spring 3 lay respectively in the return spring auxiliary spring fixed hole 8 of left brake shoe 1 and right braking hoof 10, add the returning place force after the braking of left brake shoe 1 and right braking hoof 10.Described braking bottom board 6 has the opening slot 7 adapted with the boundary dimension of return spring auxiliary spring 3, described opening slot 7 is positioned at the top of the axis hole 9 of described braking bottom board 6, ensure that return spring auxiliary spring 3 has enough spaces normally to work.
The present invention is before the mounting point of design return spring auxiliary spring 3, should according to bulk calculation and check, determine position, hole and the pitch-row of return spring auxiliary spring 3, return spring auxiliary spring fixed hole 8 is processed again on brake shoe, the two ends of return spring auxiliary spring 3 are fixed in return spring auxiliary spring fixed hole 8, and design opening slot 7 in braking bottom board 6 relevant position.
By reference to the accompanying drawings the embodiment of invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technological scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (7)
1. a drum brake, comprise the main spring of return spring, brake shoe keep-spring, braking bottom board, be symmetrically distributed in left brake shoe on braking bottom board and right braking hoof, brake camshaft is through the roller contact of the axis hole on braking bottom board and left brake shoe and right braking hoof one end, it is characterized in that: also comprise return spring auxiliary spring, the two ends of return spring auxiliary spring are connected with left brake shoe and right braking hoof respectively, described braking bottom board have the opening slot adapted with the boundary dimension of return spring auxiliary spring.
2. drum brake according to claim 1, is characterized in that: the main spring of described return spring has one, and the two ends of the main spring of this return spring are hung in the upper end of described left brake shoe and right braking hoof.
3. drum brake according to claim 1, is characterized in that: described brake shoe keep-spring has one, and the two ends of this brake shoe keep-spring are hung in the lower end of described left brake shoe and right braking hoof.
4. drum brake according to claim 1 and 2, is characterized in that: the main spring of described return spring is positioned at the bottom of described brake camshaft.
5. drum brake according to claim 1, is characterized in that: described left brake shoe is provided with two return spring auxiliary spring fixed holes, and described right braking hoof is provided with two return spring auxiliary spring fixed holes.
6. drum brake according to claim 1 or 5, it is characterized in that: described return spring auxiliary spring has two and is parallel to each other, all be horizontally through the upper area of described brake camshaft, the two ends of described return spring auxiliary spring lay respectively in the return spring auxiliary spring fixed hole of left brake shoe and right braking hoof.
7. drum brake according to claim 1, is characterized in that: described opening slot is positioned at the top of the axis hole of described braking bottom board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437614.1A CN104455107A (en) | 2013-09-24 | 2013-09-24 | Novel drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310437614.1A CN104455107A (en) | 2013-09-24 | 2013-09-24 | Novel drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104455107A true CN104455107A (en) | 2015-03-25 |
Family
ID=52901665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310437614.1A Pending CN104455107A (en) | 2013-09-24 | 2013-09-24 | Novel drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104455107A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02120532A (en) * | 1988-09-22 | 1990-05-08 | Eaton Corp | Drum brake and brake shoe guide apparatus used for said drum brake |
| JPH09196091A (en) * | 1996-01-24 | 1997-07-29 | Toyota Motor Corp | Duo-servo type parking brake device |
| US6119833A (en) * | 1998-04-30 | 2000-09-19 | Akebono Brake Industry Co., Ltd. | Drum brake device having leading/trailing mode and duo servo mode |
| CN201377531Y (en) * | 2009-03-25 | 2010-01-06 | 杨群英 | Full-floating type high-efficiency drum brake |
| CN102829103A (en) * | 2011-06-17 | 2012-12-19 | 泰州神力车桥有限公司 | Left brake assembly for engineering vehicle |
| CN203463525U (en) * | 2013-09-24 | 2014-03-05 | 中国重汽集团济南动力有限公司 | Novel drum brake |
-
2013
- 2013-09-24 CN CN201310437614.1A patent/CN104455107A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02120532A (en) * | 1988-09-22 | 1990-05-08 | Eaton Corp | Drum brake and brake shoe guide apparatus used for said drum brake |
| JPH09196091A (en) * | 1996-01-24 | 1997-07-29 | Toyota Motor Corp | Duo-servo type parking brake device |
| US6119833A (en) * | 1998-04-30 | 2000-09-19 | Akebono Brake Industry Co., Ltd. | Drum brake device having leading/trailing mode and duo servo mode |
| CN201377531Y (en) * | 2009-03-25 | 2010-01-06 | 杨群英 | Full-floating type high-efficiency drum brake |
| CN102829103A (en) * | 2011-06-17 | 2012-12-19 | 泰州神力车桥有限公司 | Left brake assembly for engineering vehicle |
| CN203463525U (en) * | 2013-09-24 | 2014-03-05 | 中国重汽集团济南动力有限公司 | Novel drum brake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |
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| RJ01 | Rejection of invention patent application after publication |