CN104500623B - Clearance adjuster of pneumatic disc brake - Google Patents
Clearance adjuster of pneumatic disc brake Download PDFInfo
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- CN104500623B CN104500623B CN201410777070.8A CN201410777070A CN104500623B CN 104500623 B CN104500623 B CN 104500623B CN 201410777070 A CN201410777070 A CN 201410777070A CN 104500623 B CN104500623 B CN 104500623B
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- mandrel
- offset
- sleeve
- spring
- disc brake
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- 230000005540 biological transmission Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000368 destabilizing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Abstract
The invention discloses a clearance adjuster of a pneumatic disc brake. The clearance adjuster of the pneumatic disc brake comprises a locating pin, a double-thread screw, a mandrel, a mandrel washer, a core seat, a spring washer, an axis check ring, a shifting sleeve, a ball, a lining, a spring, a one-way needle bearing, a lock sheet, a snap spring and an internally splined sleeve; hemispheric grooves are respectively formed in the shifting sleeve and the lining; the ball is arranged in the hemispheric grooves; the one-way needle bearing is matched with the excircle of the internally splined sleeve; the internal spline of the internally splined sleeve is matched with the external spline of the mandrel; the outer ring of the one-way needle bearing is in interference fit with the lining; the shifting sleeve and the mandrel in clearance fit; the lining and the mandrel are in the clearance fit; one end of the spring is abutted against the lining, and the other end of the spring is abutted against the lock sheet; the snap spring is clamped in the mandrel groove of the mandrel, and one end of the snap spring is abutted against the lock sheet; the mandrel has internal threads; the double-thread screw has external threads, and the internal threads and the external threads are matched. The clearance adjuster disclosed by the invention has the advantages that a brake clearance between a friction plate and a brake disc can be automatically adjusted, the structure is simple, and the performance is reliable.
Description
Technical field
The present invention relates to the gap of a kind of air-pressure disc brake, especially 17.5 inches of heavy truck air-pressure disc brakes is adjusted
Whole device.
Background technology
Flourishing with heavy truck market, requires more and more higher to its brake used, air-pressure disc brake with
Its excellent performance is just progressively replacing drum brake and is entering heavy truck market.As the key components and parts of air-pressure disc brake,
The performance of slack adjuster has obtained more concerns.And the existing gap being applied to 17.5 inches of air-pressure disc brakes is adjusted
Whole device relies primarily on the relative friction forces transmission moment of friction pair, and reliability is not high.In the braking procedure of hundreds of thousands time once
Friction inefficacy adjuster loses gap adjustment function.
Content of the invention
It is an object of the invention to provide one kind can adjust automatically friction plate and brake disc braking gap, structure is simple,
The air-pressure disc brake slack adjuster of dependable performance.
In order to achieve the above object, the technical scheme is that：A kind of air-pressure disc brake slack adjuster, including
Alignment pin, double threaded screw, mandrel, spindle gasket, core body seat, elastomeric pad, shaft block ring, pulling sleeve, ball, bushing, spring, list
To needle bearing, stay, jump ring and inner spline sleeve, described pulling sleeve and bushing have semi-spherical grooves, and described ball is put
In semi-spherical grooves, cylindrical cooperation, the internal spline of inner spline sleeve and the mandrel of described unidirectional needle bearing and inner spline sleeve
External splines cooperation, the outer ring of unidirectional needle bearing and bushing interference fit, described pulling sleeve is coordinated with mandrel gap, described bushing
Coordinate with mandrel gap, described spring one end and bushing offset, and the other end is offseted with stay, and described jump ring is clamped in mandrel
In mandrel groove, one end is offseted with stay, and described mandrel carries internal thread, and double threaded screw carries external screw thread, and both screw threads are joined
Close.
One end of described spindle gasket and mandrel offset, and the other end is offseted with core body seat.
One end of described elastomeric pad and core body seat offset, and the other end is offseted with one end of shaft block ring, described axle gear
The other end of circle is offseted with pulling sleeve and mandrel.
Described alignment pin is fixedly connected with double threaded screw.
After said structure, the gap that the present invention can be in self-adjusting brake between brake disc and friction plate, its
Moment loading, threaded adjusting gap are transmitted by ball, unidirectional needle bearing and interior external splines, it is to avoid friction transmission moment band
The destabilizing factor come, structure is simple, reliable.
Brief description
The present invention is further detailed explanation for the embodiment being given below in conjunction with accompanying drawing.
Fig. 1 is the structural front view of the air-pressure disc brake slack adjuster of the present invention；
Fig. 2 is the sectional view along line A-A for the Fig. 1；
Fig. 3 is the perspective view of the air-pressure disc brake slack adjuster of the present invention.
Specific embodiment
As shown in Figure 1, 2, 3, the air-pressure disc brake slack adjuster of the present invention, a kind of air-pressure disc brake gap
Adjuster, including alignment pin 1, double threaded screw 2, mandrel 3, spindle gasket 4, core body seat 5, elastomeric pad 6, shaft block ring 7, pulling sleeve
8th, ball 9, bushing 10, spring 11, unidirectional needle bearing 12, stay 13, jump ring 14 and inner spline sleeve 15, described pulling sleeve 8
Have semi-spherical grooves 8-1,10-1 with bushing 10, described ball 9 is placed in semi-spherical grooves 8-1,10-1, described unidirectional needle roller
Bearing 12 and the cylindrical cooperation of inner spline sleeve 15, the internal spline of inner spline sleeve 15 is coordinated with the external splines 3-3 of mandrel 3, single
To outer ring and bushing 10 interference fit of needle bearing 12, described pulling sleeve 8 and the cooperation of mandrel 3 gap, described bushing 10 and mandrel 3
Gap coordinates, and described spring 11 one end is offseted with bushing 10, and the other end is offseted with stay 13, and described jump ring 14 is clamped in mandrel
In 3 mandrel groove 3-2, one end is offseted with stay 13, and described mandrel 3 carries internal thread 3-1, and double threaded screw 2 carries external screw thread
2-1, and both screw thread cooperations.
As shown in Figure 1, 2, one end of described spindle gasket 4 and mandrel 3 offset, and the other end is offseted with core body seat 5.
As shown in Figure 1, 2, one end of described elastomeric pad 6 and core body seat 5 offset, one end of the other end and shaft block ring 7
Offset, the other end of described shaft block ring 7 is offseted with pulling sleeve 8 and mandrel 3.
As shown in Figure 1,3, described alignment pin 1 is fixedly connected with double threaded screw 2.
As shown in Figure 1, 2, 3, to realize process as follows for concrete function of the present invention：There is gap when between friction plate and brake disc
When, rocking arm drives pulling sleeve 8 to rotate, and transmits moment by ball 9, bushing 10 rotates with pulling sleeve 8 between pulling sleeve 8 and bushing 10；Unidirectional
Needle bearing 12 outer ring and bushing 10 interference fit, spline fitted inside and outside inner ring and mandrel 3, mandrel 3 is subject to the power of bushing 10 transmission
Square acts on；Mandrel 3 and the cooperation of double threaded screw 2 screw thread, both relative movements, thus double threaded screw 2 stretches out reduction friction plate and system
Gap between Moving plate；As long as there is gap between friction plate and brake disc, said process will be carried out, until gap disappears, gap is adjusted
Section process completes.As shown in Fig. 2 moment loading can be transmitted, if other direction is subject in unidirectional needle bearing 12 only one of which direction
To moment loading, then cannot be transferred to mandrel 3.As shown in Figure 1, 2, 3, spring 11 acts the effect of the power limiting transmission, if power mistake
Greatly, then bushing 10 and unidirectional needle bearing 12 can be to spring 11 side shiftings, thus skidding at ball 9, the moment of pulling sleeve 8 cannot
It is transferred to bushing 10.
Claims (4)
1. a kind of air-pressure disc brake slack adjuster, including alignment pin（1）, double threaded screw（2）, mandrel（3）, spindle gasket
（4）, core body seat（5）, elastomeric pad（6）, shaft block ring（7）, pulling sleeve（8）, ball（9）, bushing（10）, spring（11）, unidirectional
Needle bearing（12）, stay（13）, jump ring（14）And inner spline sleeve（15）It is characterised in that：Described pulling sleeve（8）With lining
Set（10）Have semi-spherical grooves（8-1、10-1）, described ball（9）It is placed in semi-spherical grooves（8-1、10-1）Interior, described unidirectional
Needle bearing（12）With inner spline sleeve（15）Cylindrical cooperation, inner spline sleeve（15）Internal spline and mandrel（3）Outer flower
Key（3-3）Cooperation, unidirectional needle bearing（12）Outer ring and bushing（10）Interference fit, described pulling sleeve（8）With mandrel（3）Gap
Cooperation, described bushing（10）With mandrel（3）Gap coordinates, described spring（11）One end and bushing（10）Offset, the other end and lock
Tight piece（13）Offset, described jump ring（14）It is clamped in mandrel（3）Mandrel groove（3-2）Interior, one end and stay（13）Offset, institute
State mandrel（3）With internal thread（3-1）, double threaded screw（2）With external screw thread（2-1）, and both screw thread cooperations.
2. air-pressure disc brake slack adjuster according to claim 1 it is characterised in that：Described spindle gasket（4）
One end and mandrel（3）Offset, the other end and core body seat（5）Offset.
3. air-pressure disc brake slack adjuster according to claim 1 it is characterised in that：Described elastomeric pad（6）
One end and core body seat（5）Offset, the other end and shaft block ring（7）One end offset, described shaft block ring（7）The other end with
Pulling sleeve（8）And mandrel（3）Offset.
4. air-pressure disc brake slack adjuster according to claim 1 it is characterised in that：Described alignment pin（1）With
Double threaded screw（2）It is fixedly connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777070.8A CN104500623B (en) | 2014-12-17 | 2014-12-17 | Clearance adjuster of pneumatic disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410777070.8A CN104500623B (en) | 2014-12-17 | 2014-12-17 | Clearance adjuster of pneumatic disc brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104500623A CN104500623A (en) | 2015-04-08 |
| CN104500623B true CN104500623B (en) | 2017-02-22 |
Family
ID=52942055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410777070.8A Active CN104500623B (en) | 2014-12-17 | 2014-12-17 | Clearance adjuster of pneumatic disc brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104500623B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1356226A (en) * | 1971-08-28 | 1974-06-12 | Honda Motor Co Ltd | Disc brakes |
| DE2507012A1 (en) * | 1974-02-19 | 1975-08-21 | Girling Ltd | INDEPENDENT ADJUSTMENT DEVICE FOR A VEHICLE BRAKE |
| DE3405027A1 (en) * | 1984-02-13 | 1985-08-14 | Alfred Teves Gmbh, 6000 Frankfurt | Actuating device for a friction brake |
| JP2001159436A (en) * | 1999-11-30 | 2001-06-12 | Tokico Ltd | Initial adjusting method and device for pad clearance of electrical disc brake |
| CN1402821A (en) * | 1999-12-02 | 2003-03-12 | 哈尔德克斯制动产品股份公司 | Disc brake |
| CN102112771A (en) * | 2008-08-01 | 2011-06-29 | 克诺尔商用车制动***有限公司 | Adjusting device for disk brake |
| CN103115094A (en) * | 2011-07-06 | 2013-05-22 | 隆中控股集团有限公司 | Regulator of clearance self-regulating mechanism in automobile disc brake |
| CN103629279A (en) * | 2013-12-16 | 2014-03-12 | 南车戚墅堰机车车辆工艺研究所有限公司 | Gap adjusting mechanism for air pressure disc brake |
| CN204387171U (en) * | 2014-12-17 | 2015-06-10 | 南车戚墅堰机车车辆工艺研究所有限公司 | A kind of air-pressure disc brake slack adjuster |
-
2014
- 2014-12-17 CN CN201410777070.8A patent/CN104500623B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1356226A (en) * | 1971-08-28 | 1974-06-12 | Honda Motor Co Ltd | Disc brakes |
| DE2507012A1 (en) * | 1974-02-19 | 1975-08-21 | Girling Ltd | INDEPENDENT ADJUSTMENT DEVICE FOR A VEHICLE BRAKE |
| DE3405027A1 (en) * | 1984-02-13 | 1985-08-14 | Alfred Teves Gmbh, 6000 Frankfurt | Actuating device for a friction brake |
| JP2001159436A (en) * | 1999-11-30 | 2001-06-12 | Tokico Ltd | Initial adjusting method and device for pad clearance of electrical disc brake |
| CN1402821A (en) * | 1999-12-02 | 2003-03-12 | 哈尔德克斯制动产品股份公司 | Disc brake |
| CN102112771A (en) * | 2008-08-01 | 2011-06-29 | 克诺尔商用车制动***有限公司 | Adjusting device for disk brake |
| CN103115094A (en) * | 2011-07-06 | 2013-05-22 | 隆中控股集团有限公司 | Regulator of clearance self-regulating mechanism in automobile disc brake |
| CN103629279A (en) * | 2013-12-16 | 2014-03-12 | 南车戚墅堰机车车辆工艺研究所有限公司 | Gap adjusting mechanism for air pressure disc brake |
| CN204387171U (en) * | 2014-12-17 | 2015-06-10 | 南车戚墅堰机车车辆工艺研究所有限公司 | A kind of air-pressure disc brake slack adjuster |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104500623A (en) | 2015-04-08 |
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Address after: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee before: CSR QISHUYAN INSTITUTE Co.,Ltd. |
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Address after: 213011 Wuyi Road, Jiangsu, Changzhou, No. 258 Patentee after: CRRC QISHUYAN INSTITUTE Co.,Ltd. Address before: 213011 Wuyi Road, Qishuyan District, Jiangsu, China, No. 258, No. Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |
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Address after: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Country or region after: China Address before: 213011 258 Wuyi Road, Changzhou, Jiangsu Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. Country or region before: China |