CN1369655A - Automatic reglation arm for braking gap - Google Patents
Automatic reglation arm for braking gap Download PDFInfo
- Publication number
- CN1369655A CN1369655A CN 02116502 CN02116502A CN1369655A CN 1369655 A CN1369655 A CN 1369655A CN 02116502 CN02116502 CN 02116502 CN 02116502 A CN02116502 A CN 02116502A CN 1369655 A CN1369655 A CN 1369655A
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- China
- Prior art keywords
- ratchet
- arm
- tooth
- braking gap
- brake
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Abstract
An autoamtic regulating arm for brake space includes shell, turbine, vortex rod transmissino pair and autoamtic regulating arm as one end connected with pneumatic link rod of brake and the other end connected with brake cam through integral key in turbine for linkage. The automatic regulating arm has one end being connected with coupling sheath by pin shaft and the coupling sheath has one end being connected with pneuamtic pushing rod and another end being connected with spiral tooth ratchet wheel of ratchet wheel mechanism by connecting rod for synchronus rotation of vortex rod as well as the pawl and the ratchet wheel set on the shell will carry out engagement cooperatively.
Description
Technical field
The invention belongs to the brake of motor-driven vehicle device, be specifically related to a kind of automatic reglation arm for braking gap.
Background technique
The drag friction pair is the main wearout parts in the middle of the motor-driven vehicle going, and along with the increase of using frequency and the prolongation of time, drag friction subtask face will increase the reservation standard clearance between the rubbing surface because of wearing and tearing.And because the various factors influence, with the gap that increases because of wearing and tearing between each wheel brake friction pair of car and not quite identical.The gap such as the untimely adjustment that increase will cause a hidden trouble to traffic safety.In the present Motor Vehicle equipment, adopt manually usually and adjust.The adjustment process effort is time-consuming, and can not adjust at any time at random, is unfavorable for traffic safety.From known document, for example CN2414958, CN2425804 disclosed " automobile brake brake wearing piece wear automatic-compensation device " and " arm for adjusting automobile brake clearance automatically " technological scheme, adopt gear, tooth bar and Clutch Control, structure is comparatively complicated, and rate of breakdown is corresponding might to be increased.
Summary of the invention
The purpose of this invention is to provide a kind of simple in structurely, reliable operation can be adjusted the compensation Motor Vehicle at random at any time because of the braking gap that frequently braking increases, and makes and remains the automatic reglation arm for braking gap that conforms with the operating mode standard clearance between the drag friction pair.
The present invention takes following technological scheme.
Automatic reglation arm for braking gap includes housing, and worm gear, worm transmission pair are adjusted arm one end automatically and linked with the pneumatic link rod of brake, and the other end is through worm gear internal spline and brake camshaft interlock.Automatically adjust arm one end and connect coupling sleeve with bearing pin.Coupling sleeve one end and air-leg link, and the other end is with the ratchet of connecting rod connection ratchet mechanism, and ratchet cooperates connection with internal spline with worm screw, be arranged on ratchet and ratchet fit engagement on the housing.The ratchet of ratchet is uniform in the shape of a spiral.The pitch angle alpha will of ratchet ratchet
1Be 15-40 °.The pitch angle alpha will of ratchet ratchet
1Be preferably 35 °; The relative ratchet shaft of the back of tooth of ratchet ratchet radially be 0 °, the angle α of the flank of tooth and the back of tooth
2Be 30-70 °.The angle α of the flank of tooth and the back of tooth
2Be preferably 55 °.
The present invention has tangible technique effect compared to existing technology.Real train test, braking gap can be adjusted automatically, reliable operation.Country's car quality supervision and test center check: " gap is transferred to 2mm, and after the adjustment arm assembly was braked 80 times continuously, the gap was 0.55mm (standard is 0.4-0.7mm) "; Life test " after 500,000 tests, parts are not seen any damage, and working properly "
Description of drawings
Accompanying drawing 1 is the automatic reglation arm for braking gap structural drawing
Accompanying drawing 2 is for being automatic reglation arm for braking gap A-A sectional view
Accompanying drawing 3 is automatic reglation arm for braking gap helical tooth ratchet, ratchet meshing engagement structure figure
Accompanying drawing 4 is automatic reglation arm for braking gap helical tooth ratchet, ratchet meshing engagement structure left view
Accompanying drawing 5 is automatic reglation arm for braking gap helical tooth ratchet, ratchet profile of tooth engagement figure
Embodiment:
Below in conjunction with accompanying drawing the present invention is described in detail.Automatic reglation arm for braking gap includes housing (6), worm gear, worm transmission pair (7), (10).Automatically adjust arm one end and link with the pneumatic link rod of brake, the other end is through worm gear (7) internal spline and brake camshaft interlock.Coupling sleeve (1) one end and air-leg link, and the other end is with connecting rod (2) link block (9), and pushing tow ratchet (3) is through the synchronous rotary worm of internal spline (10) of ratchet (3).Be arranged on ratchet (4) and ratchet (3) fit engagement on the housing (6).The ratchet of ratchet (3) is uniform in the shape of a spiral.The pitch angle alpha will that the helical tooth trajectory of ratchet (3) forms to the axis with ratchet (3)
1It is 35 °.The relative ratchet shaft of the back of tooth of the ratchet of helical tooth ratchet (3) radially be 0 °, the angle α of the flank of tooth and the back of tooth
2It is 55 °.
Automatic reglation arm for braking gap is with the center of circle of worm gear (7), the contact points of worm gear, worm transmission pair, and the tie-point of coupling sleeve (1) and connecting rod (2) and housing (6) support arm is that fulcrum forms one and overlaps " four-bar linkage " mechanism.Under standard braking gap state, brake cylinder push rod pushing tow coupling sleeve (1) drives adjusts the arm body rotation, and connecting rod (2) overcomes the reservation backlash of slide block (9), and ratchet (3) does not rotate.Adjust arm body drive worm gear (7) rotating cam axle spline and act on the secondary proper functioning of drag friction.
When braking gap increases, the corresponding increase of pivot angle of worm gear (7) rotating cam axle spline, driving the pivot angle of adjusting arm body increases, because the interlock effect of " four-bar linkage " mechanism, connecting rod (2) will overcome the reservation backlash of slide block (9), promote ratchet (3) jumping tooth and cross the corresponding number of teeth that orientation is fixed on the ratchet (4) on the housing, when the adjustment arm resets, ratchet (3) relatively rotates with ratchet (4), drive worm screw (10), rotate worm gear (7) rotation respective angles, overcome the backlash gap of causing because of wearing and tearing between the friction pair.5 is the Returnning spring of ratchet (4) among the figure, and 8 is the coupling pin of slide block (9) and connecting rod (2).
Simultaneously, orientation is fixed on ratchet (4) on the housing by profile of tooth engagement, also can prevent because of mechanical backlash causes worm screw can not self-locking, cause the situation of brake failure.
Claims (6)
1, a kind of automatic reglation arm for braking gap, include housing (6), worm gear, worm transmission pair (7), (10), automatically adjusting arm one end links with the pneumatic link rod of brake, the other end is through worm gear (7) internal spline and brake camshaft interlock, it is characterized in that adjusting automatically arm one end and coupling sleeve (1) connects, coupling sleeve (1) one end and air-leg link, the other end connects the ratchet (3) of ratchet mechanism with connecting rod (2), ratchet (3) cooperates connection with internal spline with worm screw (10), is arranged on ratchet (4) and ratchet (3) fit engagement on the housing (6).
2, a kind of automatic reglation arm for braking gap as claimed in claim 1 is characterized in that the ratchet of ratchet (3) is uniform in the shape of a spiral.
3, a kind of automatic reglation arm for braking gap as claimed in claim 2 is characterized in that the pitch angle alpha will of ratchet (3) ratchet
1Be 15-40 °.
4, a kind of automatic reglation arm for braking gap as claimed in claim 3 is characterized in that the pitch angle alpha will of ratchet (3) ratchet
1It is 35 °.
5, a kind of automatic reglation arm for braking gap as claimed in claim 2, it is characterized in that ratchet (3) ratchet the relative ratchet shaft of the back of tooth radially be 0 °, the angle α of the flank of tooth and the back of tooth
2Be 30-70 °.
6, a kind of automatic reglation arm for braking gap as claimed in claim 5, it is characterized in that ratchet (3) ratchet the relative ratchet shaft of the back of tooth radially be 0 °, the angle α of the flank of tooth and the back of tooth
2It is 55 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02116502 CN1369655A (en) | 2002-03-27 | 2002-03-27 | Automatic reglation arm for braking gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02116502 CN1369655A (en) | 2002-03-27 | 2002-03-27 | Automatic reglation arm for braking gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1369655A true CN1369655A (en) | 2002-09-18 |
Family
ID=4744128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02116502 Pending CN1369655A (en) | 2002-03-27 | 2002-03-27 | Automatic reglation arm for braking gap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1369655A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100535472C (en) * | 2006-06-07 | 2009-09-02 | 韩兆瑞 | Automatic regulating arm for automobile braking |
| CN101614259B (en) * | 2009-08-04 | 2012-05-23 | 浙江路杰机械有限公司 | Pawl and guide hole for automatic automobile braking clearance adjusting arm |
| CN109780096A (en) * | 2019-03-28 | 2019-05-21 | 山西峰润众盛汽车配件制造有限公司 | A kind of self-regulated arm increase prompting changing liner device |
-
2002
- 2002-03-27 CN CN 02116502 patent/CN1369655A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100535472C (en) * | 2006-06-07 | 2009-09-02 | 韩兆瑞 | Automatic regulating arm for automobile braking |
| CN101614259B (en) * | 2009-08-04 | 2012-05-23 | 浙江路杰机械有限公司 | Pawl and guide hole for automatic automobile braking clearance adjusting arm |
| CN109780096A (en) * | 2019-03-28 | 2019-05-21 | 山西峰润众盛汽车配件制造有限公司 | A kind of self-regulated arm increase prompting changing liner device |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |