CN201982546U - Reinforcing drum brake assembly - Google Patents
Reinforcing drum brake assembly Download PDFInfo
- Publication number
- CN201982546U CN201982546U CN2011200079439U CN201120007943U CN201982546U CN 201982546 U CN201982546 U CN 201982546U CN 2011200079439 U CN2011200079439 U CN 2011200079439U CN 201120007943 U CN201120007943 U CN 201120007943U CN 201982546 U CN201982546 U CN 201982546U
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- China
- Prior art keywords
- brake
- drum
- brake shoe
- shoe
- braking
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- Expired - Lifetime
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Abstract
The utility model relates to a reinforcing drum brake assembly, which comprises a brake drum, a left brake shoe, a right brake shoe and a brake bottom plate which has a fixing effect and a supporting effect. The brake bottom plate is provided with a cam shaft used for driving the left brake shoe and the right brake shoe to move, a brake lining is arranged respectively on the left brake shoe and the right brake shoe. The reinforcing drum brake assembly is characterized in that the left brake shoe and the right brake shoe are connected rotationally with the brake bottom plate through two fulcrum pins respectively. The reinforcing drum brake assembly changes a snap fit mode depending on a return spring and used in the existing brake assembly, guarantees stability of the brake shoes in working and avoids a separation of the brake shoes and the fulcrum pins. By increasing an inner diameter of the brake drum, the width of the brake shoes and the width of the brake lining, the drum brake assembly is enabled to have larger brake torque, the temperature ring speed of the brake drum is reduced, and the abrasion of the brake lining is reduced.
Description
Technical field
The utility model relates to a kind of reinforced drum brake assembly, in particular, relates in particular to the reinforced drum brake assembly that a kind of brake shoe is rotationally connected by backing pin and braking bottom board.
Background technique
The heavy truck overwhelming majority still adopts the air pressure cam drum type brake at present, and main structure is stuck on the braking bottom board backing pin by return spring for the brake shoe supported end is a U type opening; Or the brake shoe supported end when being circular hole backing pin be fixed on the braking floor by resilient key after passing brake shoe and braking bottom board.This two classes break is less in the work schedule braking torque, can not satisfy the braking ability requirement of mining car, and brake shoe has the trend that breaks away from backing pin when having braking; Need destroy resilient key when changing brake shoe, repair demolition is not too convenient; Brake shoe assembly and brake drum friction width only is L=180～220mm in the heavy truck, brake drum, the about 410～420mm of brake shoe assembly diameter, in bad working environments with need under the situation such as big braking moment, cause easily that brake drum temperature is higher, brake pad wear is very fast.
Summary of the invention
The utility model is in order to overcome the shortcoming of above-mentioned technical problem, the reinforced drum brake assembly that provides a kind of brake shoe to be rotationally connected by backing pin and braking bottom board.
Reinforced drum brake assembly of the present utility model, comprise brake drum, left brake shoe, right braking hoof and the braking bottom board that plays fixing and supporting effect, described braking bottom board is provided with the camshaft that is used to drive left brake shoe and right braking hoof motion, be provided with brake lining on described left brake shoe and the right braking hoof, its specialization is: described left brake shoe and right braking hoof are rotationally connected by two backing pins and braking bottom board respectively.A left side brake shoe and right braking hoof are rotationally connected by backing pin and rotary bottom plate respectively, have changed the means of fixation that the elastic force that in the past relies on return spring carries out clamping, have increased the stability of whole brake assembly.
Reinforced drum brake assembly of the present utility model, described left brake shoe and right braking hoof include the roller that matches with camshaft, and described roller is fixed on the corresponding brake shoe by roller shaft.Roller is connected with brake shoe by roller shaft, makes roller more firm, difficult drop-off.
Reinforced drum brake assembly of the present utility model, described left brake shoe is connected by return spring with right braking hoof, and this return spring is near camshaft one side.
Reinforced drum brake assembly of the present utility model, the internal diameter of described brake drum are 490～510mm, and the width of described left brake shoe, right braking hoof and brake lining is 230～240mm.The internal diameter of brake drum is set to 490～510mm, just has been equivalent to increase the internal diameter of brake drum, has increased the braking moment of drum brake assembly of the present utility model effectively, makes it be suitable for more working in the rugged environment operating mode.
Reinforced drum brake assembly of the present utility model, described backing pin is connected with braking bottom board by fixing bolt.Adopt the fixing bolt backing pin is fixed on the braking bottom board, guaranteed the soundness that is connected between backing pin and the braking bottom board effectively.
The beneficial effects of the utility model are: reinforced drum brake assembly of the present utility model, left side brake shoe and right braking hoof are rotationally connected by backing pin and braking bottom board, changed the clamping form of existing dependence return spring, guarantee the stability of brake shoe when work, avoided the disengaging of brake shoe and backing pin; The utility model makes this drum brake assembly have bigger braking moment by internal diameter that increases brake drum and the width that increases brake shoe and brake lining, and has reduced the warming velocity and the wearing and tearing that reduced brake lining of brake drum.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of brake shoe of the present utility model.
Among the figure: 1 left brake shoe, 2 brake lining, 3 roller shafts, 4 camshafts, 5 rollers, 6 return springs, 7 right braking hoofs, 8 dust-proof cover, 9 braking bottom boards, 10 brake drums, 11 fixing bolts, 12 backing pins, 13 peg wires.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and embodiment.
As depicted in figs. 1 and 2, provided the structural representation of reinforced drum brake assembly of the present utility model and the structural representation of brake shoe respectively, brake assembly comprises left brake shoe 1, brake lining 2, roller shaft 3, camshaft 4, roller 5, return spring 6, right braking hoof 7, dust-proof cover 8, braking bottom board 9, brake drum 10, fixing bolt 11, backing pin 12, peg wire 13; The internal diameter of brake drum 10 is 490～510mm, adopts the brake drum 10 of large-size to increase braking moment and the temperature rise that has reduced brake drum 10 effectively.Shown left brake shoe 1 and right braking hoof 7 are symmetrical structure, left side brake shoe 1 and right braking hoof 7 one ends have the circular hole that matches with backing pin 12, backing pin 12 fixes in order to make convenient disassembly fixing bolt 11 can adopt hexagon head head eye bolt by fixing bolt 11 and braking bottom board 9, a left side brake shoe 1 and right braking hoof 7 realize with matching of backing pin 12 by the circular hole on it and being rotationally connected of fixing bottom-plate 9 that circular hole on the brake shoe and backing pin adopt little Spielpassung; By this Connecting format, increased the soundness that left brake shoe 1 and right braking hoof 7 are connected with braking bottom board 9 effectively.The shown left brake shoe 1 and the other end of right braking hoof 7 roller 5 for matching with camshaft 4, roller 5 is by being connected with brake shoe with its roller shaft that matches 3, so both guaranteed freely rotating of roller, guaranteed also that roller was connected with the firm of brake shoe.
Brake lining 2 fixes by rivet and left brake shoe 1 and right braking hoof 7, in order to guarantee that brake assembly of the present utility model has braking ability preferably, the width of left side brake shoe 1, right braking hoof 7 and brake lining 2 is 230～240mm, so that enough big braking moment is provided, reduces brake drum temperature speed and reduce the brake pad wear rate.In order to make the utility model have anti-dust performance preferably on the whole, also be provided with the dust-proof cover 8 of fixedlying connected with braking bottom board 9.The utility model by the rotation of camshaft 4, can drive left brake shoe 1 and right braking hoof 7 and move, so that the brake lining 2 on the brake shoe outer surface contacts with the internal surface of brake drum 10, so that reach the braking purpose in the process of using.
Claims (5)
1. reinforced drum brake assembly, comprise brake drum (10), left brake shoe (1), right braking hoof (7) and the braking bottom board (9) that plays fixing and supporting effect, described braking bottom board is provided with the camshaft (4) that is used to drive left brake shoe and right braking hoof motion, be provided with brake lining (2) on described left brake shoe and the right braking hoof, it is characterized in that: described left brake shoe and right braking hoof are rotationally connected by two backing pins (12) and braking bottom board respectively.
2. reinforced drum brake assembly according to claim 1, it is characterized in that: described left brake shoe (1) and right braking hoof (7) include the roller (5) that matches with camshaft (4), and described roller (5) is fixed on the corresponding brake shoe by roller shaft (3).
3. reinforced drum brake assembly according to claim 1 and 2 is characterized in that: described left brake shoe (1) is connected by return spring (6) with right braking hoof (7), and this return spring is near camshaft one side.
4. reinforced drum brake assembly according to claim 1 and 2 is characterized in that: the internal diameter of described brake drum (10) is 490～510mm, and the width of described left brake shoe (1), right braking hoof (7) and brake lining (2) is 230～240mm.
5. reinforced drum brake assembly according to claim 1 and 2 is characterized in that: described backing pin (12) is connected with braking bottom board (9) by fixing bolt (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200079439U CN201982546U (en) | 2011-01-12 | 2011-01-12 | Reinforcing drum brake assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200079439U CN201982546U (en) | 2011-01-12 | 2011-01-12 | Reinforcing drum brake assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201982546U true CN201982546U (en) | 2011-09-21 |
Family
ID=44610008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200079439U Expired - Lifetime CN201982546U (en) | 2011-01-12 | 2011-01-12 | Reinforcing drum brake assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201982546U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967976A (en) * | 2013-01-24 | 2014-08-06 | 塞夫霍兰德有限公司 | Brake Shoe For A Drum Brake |
| CN105247237A (en) * | 2013-05-29 | 2016-01-13 | 本迪克斯·斯派塞基金会布雷克有限公司 | Hinged table brake shoe |
| CN105465249A (en) * | 2016-02-14 | 2016-04-06 | 中国重汽集团济南动力有限公司 | Brake drum with radiating rib structure |
| CN106641034A (en) * | 2017-01-13 | 2017-05-10 | 江苏恒力制动器制造有限公司 | Drum brake with lubricating mechanism |
-
2011
- 2011-01-12 CN CN2011200079439U patent/CN201982546U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103967976A (en) * | 2013-01-24 | 2014-08-06 | 塞夫霍兰德有限公司 | Brake Shoe For A Drum Brake |
| US9869358B2 (en) | 2013-01-24 | 2018-01-16 | Saf-Holland Gmbh | Brake shoe for a drum brake |
| CN105247237A (en) * | 2013-05-29 | 2016-01-13 | 本迪克斯·斯派塞基金会布雷克有限公司 | Hinged table brake shoe |
| CN105247237B (en) * | 2013-05-29 | 2017-12-19 | 本迪克斯·斯派塞基金会布雷克有限公司 | It is hinged desk-top brake-shoe |
| CN105465249A (en) * | 2016-02-14 | 2016-04-06 | 中国重汽集团济南动力有限公司 | Brake drum with radiating rib structure |
| CN106641034A (en) * | 2017-01-13 | 2017-05-10 | 江苏恒力制动器制造有限公司 | Drum brake with lubricating mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110921 |