CN201991973U - Double-support adjustable-type brake shoe supporting device - Google Patents
Double-support adjustable-type brake shoe supporting device Download PDFInfo
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- CN201991973U CN201991973U CN201120029966XU CN201120029966U CN201991973U CN 201991973 U CN201991973 U CN 201991973U CN 201120029966X U CN201120029966X U CN 201120029966XU CN 201120029966 U CN201120029966 U CN 201120029966U CN 201991973 U CN201991973 U CN 201991973U
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- brake shoe
- eccentric
- hole
- brake
- hoof
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Abstract
The utility model discloses a double-support adjustable-type brake shoe supporting device, which is suitable for a drum-type brake of a middle-sized car and a heavy-duty car. An eccentric shaft which is formed by two concentric cylinders which are eccentric to a middle cylinder is adopted, one end of a brake shoe is shaft joined with a brake soleplate, when a friction plate which is arranged with the brake shoe is abraded during the application process, the two eccentric shoe shafts are respectively and manually rotated, so the middle cylinder of the eccentric shoe shaft drives the brake shoe to move relatively to a central circular hole of the brake soleplate, and an effect that an outer circular surface of the friction plate on the brake shoe is expanded outwards and contracted inwards can be realized. The brake shoe supporting device has an adjusting function that: the end of the friction plate, which is close to the eccentric shoe shaft, on the brake shoe can be expanded outwards and contracted inwards. Therefore, the abraded part of the friction plate which faces the scrappage after being abraded in the use can be continued to use normally after being appropriately compensated, and the service life of the friction plate is doubled.
Description
Technical field
The utility model relates to automobile drum brake, is the adjustable brake shoe bearing device of a kind of dual-supporting specifically.
Background technique
Drum brake medium-sized, heavy-duty car all has the brake shoe bearing device, and its existing typical structure is as follows: mainly be made up of brake shoe, braking bottom board, brake camshaft, reset tension spring, hoof axle and parts such as roller and friction plate.There is a circular hole in the center portion of its braking bottom board, a plurality of bolts hole that this circular hole periphery is uniform.Center hole is used for the wheel axle location with automobile, the uniform a plurality of bolts hole of its periphery cooperate with a plurality of bolts, braking bottom board is fastened on the wheel axle, make braking bottom board and wheel axle become a rigid body, also have the bearing hole of a brake camshaft and the bilateral symmetry position of relative brake camshaft bearing hole 180 degree directions to have on two axis, axially indulge on the braking bottom board across four diameters at braking bottom board two ends hoof axle bearing hole identical with the hoof axle, the shaft axis in its hole and brake camshaft bearing hole axis parallel, effect is by the shoeing axle.Two brake shoes respectively are being equipped with a roller by brake camshaft one end, a reset tension spring is arranged between two brake shoes, its pulling force impels the roller of two brake shoe terminations can abut against all the time on the cam circle cambered surface of brake camshaft, the other end of two brake shoes respectively has a cylindrical hole, the axis parallel of the shaft axis of cylindrical hole and the other end roller, aperture and hoof axle cunning are joined, this cylindrical hole is after the location on the braking bottom board is to pack into from the bearing hole of braking bottom board one side with the hoof axle of the measure-alike straight pin shape of the hoof axle bearing hole on external diameter and brake shoe cylindrical hole and the braking bottom board, ran through the opposite side bearing hole that the brake shoe cylindrical hole enters braking bottom board more again, and made brake shoe one end and braking bottom board obtain location and supporting.The working procedure of drum brake is as follows: when brake camshaft is counterclockwise rotated by the brake cylinder radial push, two cam circle cambered surfaces are exerted pressure laterally to the roller on two brake shoes on the brake camshaft, the pulling force that makes two rollers drive brake shoe overcome reset tension spring expands outwardly, the semicircular arc friction plate cylindrical that is fastened on the semicircle outer arced surface of two brake shoes is expanded outwardly simultaneously, until tightening together with tire, axially use the bearing positioning and fixing on same wheel axle, contact back, brake drum endoporus cylndrical surface with tire rotation synchronously produces friction force, make car deceleration or parking in travelling, when brake camshaft loses the brake cylinder radial thrust, the pulling force of reset tension spring inwardly shrinks two brake shoes and roller, force the brake camshaft clockwise direction to rotate, when making two cam circle cambered surfaces get back to the origin-location, brake shoe upper friction plate cylindrical is with after separate brake drum endoporus cylndrical surface, and braking force disappears immediately.In sum: in the overall process of break work, close this end of brake shoe bearing device that constitutes by the hoof axle of the hoof axle bearing hole on two brake shoe cylindrical holes and the braking bottom board and two straight pin shapes, when (being commonly called as " the quiet end of brake shoe ") outwards expanded by the active force of brake camshaft significantly at two brake shoe rollers of an end (being commonly called as " brake shoe moved end ") of close brake camshaft, expansion amount outside the friction plate outer radial of " the quiet end of brake shoe " is minimum, and there are the following problems in the long-term use of break:
1, because two hoof axles that are used to support brake shoe in the brake shoe bearing device of above structure is to sell shape directly to households, when the break application maintenance, the bearing device that " the quiet end of brake shoe " is one does not have can be for the function of adjusting by the outer an amount of expansion of " the quiet end of brake shoe " one section friction plate outer radial, prolongation along with the break operating time, weaken gradually by the friction plate of " the quiet end of brake shoe " the section back braking force of wearing and tearing gradually, directly influence running safety.
2, because two hoof axles for the brake shoe positioning support in the brake shoe bearing device of existing structure are to sell shape directly to households, so lacked can bowlder " the quiet end of brake shoe " expands outwardly outside the friction plate that will repair each time on the brake shoe function, make as long as can also continue the normal friction plate that uses by finishing scraps for no reason, waste greatly.
Summary of the invention
For solving the technical problem of above-mentioned this brake shoe bearing device disappearance regulatory function, the utility model provides a kind of dual-supporting adjustable brake shoe bearing device, comprises brake shoe, braking bottom board, friction plate, brake camshaft and reset tension spring; Comprise brake shoe, braking bottom board, friction plate, brake camshaft, reset tension spring, positioning plate and eccentric shaft hoof.
The brake shoe external diameter semicircular in shape of brake shoe and have certain thickness has semicircular arc and strengthens gusset in the inboard of brake shoe external diameter, an end of strengthening gusset is equipped with roller, and the other end has a cylindrical hole; The outside of brake shoe external diameter is equipped with friction plate; Braking bottom board one end has upper support hole and lower support hole, has the mounting hole that brake camshaft is installed with upper support hole, the relative end in lower support hole; It is characterized in that: also comprise positioning plate and eccentric hoof axle;
Go up cylindrical body in the described eccentric hoof axle, descend cylindrical body concentric, and all with middle cylindrical body off-centre, middle cylindrical body matches with the cylindrical hole of brake shoe, last cylindrical body matches with the lower support hole with the upper support hole of braking bottom board respectively with following cylindrical body, two eccentric hoof axles run through two cylindrical holes and upper support hole, lower support hole, the axis parallel of the shaft axis of two cylindrical holes and two rollers; The brake camshaft of installing on the other end of two brake shoes and the braking bottom board joins, and links to each other by reset tension spring; Have two positioning holes on the positioning plate, fixed hole is enclosed within on the spindle nose of two eccentric hoof axles, and fixes with braking bottom board.
The spindle nose of described eccentric hoof axle is polygon prismatic spindle nose, and the positioning hole on the positioning plate is the polygon rhombic hole that is complementary with eccentric hoof axle spindle nose.The spindle nose of described eccentric hoof axle is many five equilibriums splined shaft spindle nose, and the positioning hole on the positioning plate is the many five equilibriums splined hole that is complementary with eccentric hoof axle spindle nose.
Advantage of the present utility model is:
1, in the utility model brake shoe bearing device, the amount that friction plate can be worn by the friction plate cylindrical that rotates eccentric hoof axle and make " the quiet end of brake shoe " after wearing and tearing is in time compensated, and guarantees the break service behaviour, ensures ride safety of automobile.
2, the offset of two eccentric shaft hoof is bigger in the utility model brake shoe bearing device, in the time must implementing finishing to the friction plate cylindrical on the brake shoe at every turn, can be by rotation two eccentric hoof axles, make the friction plate external diameter of " the quiet end of brake shoe " a section obtain enlarging greatly, required light is cut surplus when satisfying finishing, and the friction plate after finishing can continue normal use, has prolonged the working life of friction plate greatly, saves the maintenance expenses of automobile.
Description of drawings
Fig. 1 is the plan view of the adjustable brake shoe bearing device of the utility model dual-supporting;
Fig. 2 looks sectional view for the left side of the adjustable brake shoe bearing device of the utility model dual-supporting;
Fig. 3 looks sectional view for the master of the adjustable brake shoe bearing device of the utility model dual-supporting;
Fig. 4 is a brake shoe structural representation in the adjustable brake shoe bearing device of the utility model dual-supporting;
Fig. 5 is a braking bottom board structure plan view in the adjustable brake shoe bearing device of the utility model dual-supporting;
Fig. 6 is a braking bottom board structure worm's eye view in the adjustable brake shoe bearing device of the utility model dual-supporting;
Fig. 7 is an eccentric hoof axle construction schematic representation in the adjustable brake shoe bearing device of the utility model dual-supporting;
Among the figure:
The eccentric hoof axle of 1-brake shoe 2-braking bottom board 3-friction plate 4-
5-brake camshaft 6-positioning plate 7-reset tension spring 101-brake shoe external diameter
102-strengthens gusset 103-roller 104-cylindrical hole 201-upper support hole
202-lower support hole 203-mounting hole 401-goes up cylindrical body under the cylindrical body 402-
Cylindrical body 404-spindle nose among the 403-
Embodiment
Below in conjunction with accompanying drawing the utility model is elaborated.
The adjustable brake shoe bearing device of a kind of dual-supporting of the utility model, after the hoof shape shaft that original direct selling is linked to each other with brake shoe one end is changed, random hand rotation eccentric shaft hoof, can drive the relative braking bottom board center hole of brake shoe the other end shaft axis and produce displacement, reach the purpose that the two brake shoe the other ends can be expanded outwardly or inwardly shrink.
As Fig. 1, Fig. 2, shown in Figure 3, the adjustable brake shoe bearing device of dual-supporting in a kind of automobile drum brake of the utility model mainly comprises brake shoe 1, braking bottom board 2, friction plate 3, eccentric hoof axle 4, brake camshaft 5, positioning plate 6, reset tension spring 7.
As shown in Figure 4, the structure of brake shoe 1 is: brake shoe external diameter 101 semicirculars in shape and have certain thickness, have the semicircular arc that is cast as one in the inboard of brake shoe external diameter 101 and strengthen gusset 102, an end of strengthening gusset 102 is equipped with roller 103, and the other end has a cylindrical hole 104.The outside of brake shoe external diameter 101 is equipped with friction plate 3.
As Fig. 5, shown in Figure 6, braking bottom board 2 one ends have upper support hole 201 and lower support hole 202, have the mounting hole 203 that brake camshaft 5 is installed with upper support hole 201, lower support hole 202 relative ends.
Pass through said structure, after the friction plate 3 that matches on the brake shoe 1 in use weares and teares, set screw is unclamped, extracts positioning plate 6, by manually rotating these two eccentric hoof axles 4 respectively, make the center hole of the mediate cylindrical drive brake shoe 1 relative braking bottom board 2 of this off-centre hoof axle 4 produce displacement movement, to reach the effect that brake shoe 1 upper friction plate 3 peripheries is expanded outwardly and inwardly shrink.Make the utility model brake shoe bearing device increase the regulatory function that the friction plate 3 on the brake shoe 1 can expand outwardly and inwardly shrink near eccentric hoof axle 4 one ends thus.Make this after using wearing and tearing, face the friction plate of scrapping 3, by rotating eccentric hoof axle 4, the periphery that can regulate friction plate 3 in right amount expands outwardly, and makes the amount of having worn and torn of friction plate 3 obtain continuing normal the use behind the adequate compensation, has prolonged the working life of friction plate 3 at double.
Claims (5)
1. the adjustable brake shoe bearing device of dual-supporting comprises brake shoe, braking bottom board, friction plate, brake camshaft and reset tension spring; The brake shoe external diameter semicircular in shape of brake shoe and have certain thickness has semicircular arc and strengthens gusset in the inboard of brake shoe external diameter, an end of strengthening gusset is equipped with roller, and the other end has a cylindrical hole; The outside of brake shoe external diameter is equipped with friction plate; Braking bottom board one end has upper support hole and lower support hole, has the mounting hole that brake camshaft is installed with upper support hole, the relative end in lower support hole; It is characterized in that: also comprise positioning plate and eccentric hoof axle;
Go up cylindrical body in the described eccentric hoof axle, descend cylindrical body concentric, and all with middle cylindrical body off-centre, middle cylindrical body matches with the cylindrical hole of brake shoe, last cylindrical body matches with the lower support hole with the upper support hole of braking bottom board respectively with following cylindrical body, two eccentric hoof axles run through two cylindrical holes and upper support hole, lower support hole, the axis parallel of the shaft axis of two cylindrical holes and two rollers; The brake camshaft of installing on the other end of two brake shoes and the braking bottom board joins, and links to each other by reset tension spring;
Have two positioning holes on the positioning plate, fixed hole is enclosed within on the spindle nose of two eccentric hoof axles, and fixes with braking bottom board.
2. the adjustable brake shoe bearing device of a kind of according to claim 1 dual-supporting, it is characterized in that: the spindle nose of described eccentric hoof axle is square spindle nose, the positioning hole on the positioning plate is the square hole that is complementary with eccentric hoof axle spindle nose.
3. the adjustable brake shoe bearing device of a kind of according to claim 1 dual-supporting is characterized in that: the spindle nose of described eccentric hoof axle is polygon prismatic spindle nose, and the positioning hole on the positioning plate is the polygon rhombic hole that is complementary with eccentric hoof axle spindle nose.
4. the adjustable brake shoe bearing device of a kind of according to claim 1 dual-supporting is characterized in that: the spindle nose of described eccentric hoof axle is many five equilibriums splined shaft spindle nose, and the positioning hole on the positioning plate is the many five equilibriums splined hole that is complementary with eccentric hoof axle spindle nose.
5. the adjustable brake shoe bearing device of a kind of according to claim 1 dual-supporting is characterized in that: cylindrical diameter is less than the cylinder diameter of centre under the described eccentric hoof axle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120029966XU CN201991973U (en) | 2011-01-28 | 2011-01-28 | Double-support adjustable-type brake shoe supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120029966XU CN201991973U (en) | 2011-01-28 | 2011-01-28 | Double-support adjustable-type brake shoe supporting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991973U true CN201991973U (en) | 2011-09-28 |
Family
ID=44668462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120029966XU Expired - Fee Related CN201991973U (en) | 2011-01-28 | 2011-01-28 | Double-support adjustable-type brake shoe supporting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991973U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537138A (en) * | 2011-12-14 | 2012-07-04 | 江苏长江机械有限公司 | Supporting device of double-support adjustable brake shoes |
| CN103883648A (en) * | 2014-04-21 | 2014-06-25 | 重庆市璧山宏向汽配有限公司 | Brake assembly with adjustable mechanical brake |
| CN103899689A (en) * | 2014-04-21 | 2014-07-02 | 重庆市璧山宏向汽配有限公司 | Adjustable brake assembly for tricycle |
| CN104948612A (en) * | 2015-06-23 | 2015-09-30 | 胡正林 | Deviation prevention drum brake |
| CN108035993A (en) * | 2018-01-12 | 2018-05-15 | 宜昌亿特利缓速器有限责任公司 | A kind of brake shoe assembly and the brake using the brake shoe assembly |
| US11454289B2 (en) | 2020-02-21 | 2022-09-27 | Bendix Commercial Vehicle Systems Llc | Unitary bracket for mounting a brake assembly and brake actuator |
-
2011
- 2011-01-28 CN CN201120029966XU patent/CN201991973U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102537138A (en) * | 2011-12-14 | 2012-07-04 | 江苏长江机械有限公司 | Supporting device of double-support adjustable brake shoes |
| CN103883648A (en) * | 2014-04-21 | 2014-06-25 | 重庆市璧山宏向汽配有限公司 | Brake assembly with adjustable mechanical brake |
| CN103899689A (en) * | 2014-04-21 | 2014-07-02 | 重庆市璧山宏向汽配有限公司 | Adjustable brake assembly for tricycle |
| CN104948612A (en) * | 2015-06-23 | 2015-09-30 | 胡正林 | Deviation prevention drum brake |
| CN104948612B (en) * | 2015-06-23 | 2017-11-03 | 胡正林 | A kind of anti-deviation drum brake |
| CN108035993A (en) * | 2018-01-12 | 2018-05-15 | 宜昌亿特利缓速器有限责任公司 | A kind of brake shoe assembly and the brake using the brake shoe assembly |
| US11454289B2 (en) | 2020-02-21 | 2022-09-27 | Bendix Commercial Vehicle Systems Llc | Unitary bracket for mounting a brake assembly and brake actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20120128 |