CN202690820U - Cam drum type brake with single supporting pin - Google Patents
Cam drum type brake with single supporting pin Download PDFInfo
- Publication number
- CN202690820U CN202690820U CN 201220363019 CN201220363019U CN202690820U CN 202690820 U CN202690820 U CN 202690820U CN 201220363019 CN201220363019 CN 201220363019 CN 201220363019 U CN201220363019 U CN 201220363019U CN 202690820 U CN202690820 U CN 202690820U
- Authority
- CN
- China
- Prior art keywords
- brake
- drum type
- cam
- supporting pin
- pin
- 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
Links
Images
Landscapes
- Braking Arrangements (AREA)
Abstract
The utility model discloses a cam drum type brake with a single supporting pin. The supporting pin is fixed on a bottom plate; the center of the supporting pin is positioned on an extension line of a connection line of the center of a cam shaft and the center of the brake bottom plate; supporting ends of brake shoes have structures of double subplate horse-riding type single support pin holes; the semi-circle gap in each end of each brake shoe is supported on the supporting pin; two brake shoes share one supporting pin; rollers are arranged at the other ends of brake shoes; a cam shaft is arranged on the bottom plate positioned between the two rollers; a cam is fixed on the cam shaft; the cam is in contact with the rollers; reset springs and fixed springs are arranged between the two brake shoes; and two friction linings are fixed on the outer circle of each brake shoe. The cam drum type brake has the advantages that because the position of the supporting pin is changed, the efficiency factors of the brake are improved; and two brake shoes share one supporting pin, so that the quantity of components is reduced, the weight of materials of the brake bottom plate and the brake shoes is reduced, the processing technology of the brake bottom is simplified, and the production cost of the brake can be reduced.
Description
Technical field
The utility model relates to auto parts and components, i.e. single-anchor pin cam drum type brake.
Background technique
The widely used cam drum type brake of Present Domestic is comprised of component such as brake backing plate, brake shoe, friction facing, brake shoe rest pin, return spring, camshaft, dust-proof cover, and two brake shoes respectively have a rest pin to be fixed on the brake backing plate.Much variations do not occur in this break for many years structure, and structure is complicated, and fabricating cost is higher.
Summary of the invention
In order to overcome traditional two baroque shortcomings of rest pin of break design, the utility model proposes the new technological scheme of single-anchor pin cam drum type brake.
This single-anchor pin cam drum type brake, main base plate by break, two brake shoes, dust-proof cover, return spring, fixing spring, rest pin and camshaft form, it is characterized in that, be fixed with a rest pin on the base plate, rest pin is centered close on the elongation line of camshaft center and the braking bottom board line of centres, the supported end of brake shoe adopts double-auxiliary-plate horseback riding type single-anchor pin hole structure, one end half round cut of brake shoe is bearing on the rest pin, two brake shoes share a rest pin, the other end of brake shoe is equipped with roller, on the base plate of two roller centres camshaft is housed, be fixed with cam on the camshaft, cam contacts with roller, is equipped with return spring and fixing spring between two brake shoes, is fixed with two friction facings at each brake shoe cylindrical.
When cam rotated, cam curved surface promoted roller two brake shoes is opened, and the friction facing on the brake shoe contacts with the brake drum inner cylindrical surface that is turning, and produces frictional resistance moment, implements braking.
Friction facing is the cylinder sheet, and its external cylindrical surface unfolded drawing is the wedge angle rhombus, two ends wedge angle equal and opposite in direction, and its external cylindrical surface unfolded drawing or be parallelogram, its external cylindrical surface unfolded drawing two ends also can be circular arc, and the circular arc at two ends is symmetrical.
The chamfering of friction facing starting point is 70 °～75 °, and the intersection abate of chamfering inclined-plane and friction facing external cylindrical surface is without significantly intersecting profile line.
The utility model has the advantages that: because the change of rest pin position, improved braking efficiency factor, change into and reduced number of spare parts after two hoof share a rest pin, reduced the material weight of brake backing plate and brake shoe, simplified the processing technology of brake backing plate, reduced process time, this can reduce the cost of production of break, optimized in addition the shape of friction facing, the Line of contact that makes friction facing and brake drum inner cylindrical surface is cylindrical helix, more steady during brake, be difficult for sideslip.
Description of drawings
Fig. 1 is the utility model internal structure schematic representation
Fig. 2 is friction facing external cylindrical surface unfolded drawing (wedge angle rhombus)
Fig. 3 is friction facing external cylindrical surface unfolded drawing (parallelogram)
Fig. 4 is friction facing external cylindrical surface unfolded drawing (two ends is circular arc)
Among the figure: 1, base plate, 2, brake shoe, 3, dust-proof cover, 4, return spring, 5, fixing spring, 6, rest pin, 7, camshaft, 8, friction facing.
Embodiment
Be described in detail as follows below in conjunction with the embodiment of accompanying drawing to model utility:
In Fig. 1, break of the present utility model comprises circular bottom plate 1, be fixed on dust-proof cover 3 and brake shoe 2 are arranged on base plate 1 circumference, brake shoe 2 has two, be semicircle, be arranged symmetrically with, be fixed with a rest pin 6 at base plate 1, brake shoe 2 one ends have semicircle breach, breach is on rest pin 6, and two brake shoes 2 share a rest pin 6, the other end of brake shoe 2, it is movable end, be fixed with roller by pin-and-hole, on the base plate 1 in the middle of the roller, be fixed with camshaft 7, be fixed with cam on the camshaft 7, cam contacts with roller, is equipped with return spring 4 and fixing spring 5 between two brake shoes 2, on the cylindrical of each brake shoe 2, be fixed with two friction facings 8, the chamfering of the starting point of friction facing 8 is 73 °, and the intersection abate of the external cylindrical surface of chamfering inclined-plane and friction facing 8 is without significantly intersecting profile line.
Fig. 2 is the external cylindrical surface unfolded drawing of friction facing 8, is the wedge angle rhombus, two ends wedge angle equal and opposite in direction.
Fig. 3 is the external cylindrical surface unfolded drawing of friction facing 8, is parallelogram.
Fig. 4 is the external cylindrical surface unfolded drawing of friction facing 8, and two ends are circular arc, and the circular arc at two ends is symmetrical.
Claims (5)
1. single-anchor pin cam drum type brake, main base plate by break, two brake shoes, dust-proof cover, return spring, fixing spring, rest pin and camshaft form, it is characterized in that, be fixed with a rest pin on the base plate, rest pin is centered close on the elongation line of camshaft center and the braking bottom board line of centres, the supported end of brake shoe adopts double-auxiliary-plate horseback riding type single-anchor pin hole structure, one end half round cut of brake shoe is bearing on the rest pin, two brake shoes share a rest pin, the other end of brake shoe is equipped with roller, on the base plate of two roller centres camshaft is housed, be fixed with cam on the camshaft, cam contacts with roller, is equipped with return spring and fixing spring between two brake shoes, is fixed with two friction facings at each brake shoe cylindrical.
2. single-anchor pin cam drum type brake according to claim 1 is characterized in that, friction facing is the cylinder sheet, and its external cylindrical surface unfolded drawing is the wedge angle rhombus, two ends wedge angle equal and opposite in direction.
3. single-anchor pin cam drum type brake according to claim 1 is characterized in that, friction facing is the cylinder sheet, and its external cylindrical surface unfolded drawing is parallelogram.
4. single-anchor pin cam drum type brake according to claim 1 is characterized in that, friction facing is the cylinder sheet, and its external cylindrical surface unfolded drawing two ends are circular arc, and the circular arc at two ends is symmetrical.
5. single-anchor pin cam drum type brake according to claim 1 is characterized in that, the chamfering of friction facing starting point is 70 °～75 °, and the intersection abate of chamfering inclined-plane and friction facing external cylindrical surface is without significantly intersecting profile line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363019 CN202690820U (en) | 2012-07-26 | 2012-07-26 | Cam drum type brake with single supporting pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363019 CN202690820U (en) | 2012-07-26 | 2012-07-26 | Cam drum type brake with single supporting pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202690820U true CN202690820U (en) | 2013-01-23 |
Family
ID=47546446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220363019 Expired - Fee Related CN202690820U (en) | 2012-07-26 | 2012-07-26 | Cam drum type brake with single supporting pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202690820U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228473A (en) * | 2020-11-28 | 2021-01-15 | 河南凤宝重工科技有限公司 | Self-aligning brake |
-
2012
- 2012-07-26 CN CN 201220363019 patent/CN202690820U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112228473A (en) * | 2020-11-28 | 2021-01-15 | 河南凤宝重工科技有限公司 | Self-aligning brake |
| CN112228473B (en) * | 2020-11-28 | 2022-06-21 | 河南凤宝重工科技有限公司 | Self-aligning brake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101493124A (en) | Single-anchor pin cam drum type brake | |
| CN201982512U (en) | Retainer of non-standard thin-walled angular contact ball bearing | |
| CN203926371U (en) | Tilted-pad Journal Bearing | |
| CN202690820U (en) | Cam drum type brake with single supporting pin | |
| WO2007081715A3 (en) | Precision location and low force repositioning of powder metal components | |
| CN204673302U (en) | A kind of bearing shell shape-setting clamp | |
| CN205736491U (en) | A kind of type matrix supporting construction of smart card stamp device | |
| CN203189573U (en) | Light brake bottom plate | |
| CN103343772A (en) | Roller | |
| CN203730563U (en) | Oil separator for hydrodynamic thrust bearing | |
| CN203214629U (en) | Bearing outer ring | |
| CN201487029U (en) | Rotating shaft structure capable of improving blocking strength | |
| CN204253618U (en) | A kind of low frictional torque bearing | |
| CN205331205U (en) | Take damped cylinder | |
| CN205298602U (en) | Metal seal piston valve's valve rod and connection structure of plunger | |
| CN202208078U (en) | Bottom supporting structure for pitched roof of die | |
| CN202482573U (en) | Needle cylinder device of hosiery machine | |
| CN204474960U (en) | Expanding roller | |
| CN201531525U (en) | Cylinder roller bearing | |
| CN202326747U (en) | Cylindrical roller bearing | |
| CN203189574U (en) | Light shoe | |
| CN203281579U (en) | Jig for cleaning of valve body | |
| CN203009567U (en) | Single-raw angular contact ball bearing | |
| CN203453265U (en) | Novel crankshaft assembly in radial plunger motor | |
| CN202542651U (en) | Secondary rope sheave |
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: HUNAN YUNDA ELECTROMECHANICAL SCIENCE + TECHNOLOGY Free format text: FORMER NAME: HUNAN YUNDA MACHINERY MANUFACTURING CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 415500 No. 98 South Road, Lixian Economic Development Zone, Changde, Hunan Patentee after: Hunan Yunda Electromechanical Science & Technology Co., Ltd. Address before: 415500 Lixian Li Township of Changde city in Hunan province to protect the city to city neighborhood Patentee before: Hunan Yunda Machinery Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20160726 |