CN102252050B - Clearance compensation mechanism of gas-pressure plate type brake - Google Patents
Clearance compensation mechanism of gas-pressure plate type brake Download PDFInfo
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- CN102252050B CN102252050B CN 201110197219 CN201110197219A CN102252050B CN 102252050 B CN102252050 B CN 102252050B CN 201110197219 CN201110197219 CN 201110197219 CN 201110197219 A CN201110197219 A CN 201110197219A CN 102252050 B CN102252050 B CN 102252050B
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Abstract
The invention discloses a clearance compensation mechanism of a gas-pressure plate type brake, comprising a force increasing mechanism, a support base, a driving adjustment mechanism, a driven adjustment mechanism, a transmission mechanism, a pushing plate and a ferrule, wherein the driving adjustment mechanism and the driven adjustment mechanism are arranged at two ends of the support base, the transmission mechanism is connected to the driving adjustment mechanism and the driven adjustment mechanism, and the pushing plate is jointly driven by the driving adjustment mechanism and the driven adjustment mechanism; the driving adjustment mechanism comprises a driving shaft assembly rotatably connected to one end of the support base and an adjusting sleeve movably sleeved on the driving shaft assembly; the force increasing mechanism drives the driving adjustment mechanism to work while driving the support base to advance, the driven adjustment mechanism and the driving adjustment mechanism synchronously work to push the pushing plate to finish clearance compensation via the transmission of the transmission mechanism; the ferrule is arranged on the driving shaft assembly via a locating mechanism; and the ferrule and the adjusting sleeve are tightly held and ganged via a torsion spring. A one-way clutch structure formed by the torsion spring, the adjusting sleeve and the ring is simply structured and easily assembled and is low in cost.
Description
Technical field
The present invention relates to air-pressure disc brake, especially the rocker compensating gear in the air-pressure disc brake.
Background technique
Automotive brake mainly is divided into two kinds of drum-type and disc types, the drum brake cost is low, dustproof, be convenient to simultaneously as Parking Brake, but that its Braking efficiency and thermal diffusivity will differ from is many braking force poor stability of drum brake, braking force alters a great deal on different road surfaces, be not easy to control, and because heat dispersion is poor, in braking process, can assemble a large amount of heats; Very complicated distortion easily takes place in brake slipper and wheel hub under temperatures involved, be easy to generate fading of brake and the phenomenon that flutters, and causes that retardation efficiency descends.
Disk type braker braking force under the fluid power power-assisted is big and stable, and good braking performance is arranged on various road surfaces, and its Braking efficiency is far above drum brake, and air is directly by the disc type brake dish, so the thermal diffusivity of disk type braker is fine.But disk type braker structure more complicated with respect to drum brake requires also higherly to brake calipers, pipe-line system, and cost is higher than drum brake.
Air-pressure disc brake has been widely used in car, but many producers are in order to reduce cost, except being used for whole wheels at some exotic performance cars, mostly only as front wheel brake, and cooperate the directional stability when in the hope of automobile higher braking being arranged with the drum brake of trailing wheel.Though air-pressure disc brake also has application at heavy-duty car, also has suitable distance from popularizing.
Air-pressure disc brake is in braking process, and friction plate can wear and tear, and makes the gap between brake disc and the friction plate surpass initial gap band, and this just need be in braking process, the gap after compensating this and wear and tear by rocker compensating gear,
China national Patent Office discloses the patent No. in 2008-2-27 and has been " 200620099779.8 ", and name is called the patent of " floating tong type bipushing rod pneumatic disk brake ", has improved the braking moment of break, makes it more stable; Improved the synchronized movement of two push rods, thereby the overall performance of air-pressure disc brake is further promoted; But employed clearance adjustment mechanism mainly is to utilize torsion spring and adjust cover in conjunction with principle in this patent, and its shortcoming is: one, torsion spring is installed in and adjusts between cover and the turning collar, and complex structure, workman's assembling difficulty are big; Transmission process when two, the gap compensates needs the cooperation of large and small torsion spring, and the accuracy of adjusting play will depend on the accuracy of manufacturing of two torsion springs, otherwise just can not guarantee the working life of break; Three, the torsion spring structure makes clearance adjustment mechanism complex structure, manufacture cost improve.
Summary of the invention
Problem to be solved by this invention just provides a kind of rocker compensating gear of air-pressure disc brake, have simple in structure, safe and reliable, make that maintenance cost is low, the high characteristics of precision are adjusted in the gap, thereby effectively prolong the working life of break.
For solving the problems of the technologies described above, the present invention adopts following technological scheme: a kind of rocker compensating gear of air-pressure disc brake, is connected the drive mechanism of initiatively regulating mechanism and driven regulating mechanism, is united the push pedal of driving by active regulating mechanism and driven regulating mechanism the active regulating mechanism of comprise boosting mechanism, supporting base, being located at the supporting base two ends and driven regulating mechanism; Described active regulating mechanism comprises that the driving shaft assembly and the movable set that are rotatably connected on supporting base one end raise a whole set of at the driving shaft assembly; Described boosting mechanism drives initiatively regulating mechanism action when the driving supporting base advances, transmission by drive mechanism makes driven regulating mechanism and active regulating mechanism run-in synchronism promotion push pedal finish the gap compensation, it is characterized in that: also comprise by position structure being installed in lasso on the driving shaft assembly, described lasso with adjust cover and hold interlock tightly by torsion spring.
Further, described driving shaft assembly comprises the driving shaft lining and is screwed in the interior driving shaft of driving shaft lining; Described driven regulating mechanism comprises the driven shaft lining and is screwed in the interior driven shaft of driven shaft lining; Described drive mechanism is arranged between driving shaft lining and the driven shaft lining, and the bottom of described driving shaft and driven shaft is fixed in the push pedal respectively.
Further, described position structure comprises holddown spring, back-up ring pad and the lasso pad that is sleeved on driving shaft lining upper end, and described lasso is pressed on the driving shaft lining by this position structure.Holddown spring, back-up ring pad and lasso pad all belong to general part, are convenient to make and maintenance.
Further, described drive mechanism comprises the driving gear be located on the driving shaft lining, is located at driven gear on the driven shaft lining, is located at the driving gear that connects driving gear and driven gear on the supporting base.The synchronism of three gear meshing engagement structures super product of the same type far away.
Further, described boosting mechanism comprises pressure arm and roller bearing, and described pressure arm one end is provided with that needle bearing is secondary to be rotationally connected with roller bearing, and the effect by the needle bearing pair makes pressure arm produce thrust when roller bearing rotates to advance for the promotion supporting base.
Further, described pressure arm one side is provided with driving lever, adjusts to put to be provided with breach, and described driving lever is inserted in the breach, stirs the rotation of adjustment cover by driving lever when pressure arm rotates.
Further, described boosting mechanism and supporting base connect as one in the caliper that is installed in air-pressure disc brake by retainer.Be convenient to the assembling maintenance of break, improve work efficiency of workers.
Further, the two ends up and down of described supporting base respectively are provided with two plane of orientations, and supporting base is slidingly matched by plane of orientation and caliper inwall.So just can guarantee that whole rocker compensating gear does not rock in caliper inside, make mechanism's smooth working, noise free in the process that vehicle travels has no abnormal sound.
Further, described driving shaft lining upper end also is provided with the adjusting head, and the corresponding position of regulating of described caliper is provided with dustproof plug.Dustproof plug plays dustproof effect at ordinary times, takes off dustproof plug rotation and regulates just manual adjusting play of head.
Beneficial effect of the present invention: existing product of the same type has and utilizes unilateral bearing also to be conducive to the rectangle spring assembly on the market, but often has a defective that is difficult for assembling, and assembly process is loaded down with trivial details and need special-purpose frock clamping; And rocker compensating gear provided by the invention adopts is by a torsion spring, adjust the one-way clutch structure that cover, lasso constitute, and mechanism is simple, easily assembling, cost are low; Torsion spring is except playing the effect of transmitting moment of torsion, and when no excessive brake clearance need compensate, the driving shaft assembly can not turn round, torsion spring is spreading thereupon just, can be rotated further and adjust cover, i.e. the function of one-way clutch, guarantee can not transship, be guaranteed the working life of break.
Description of drawings
The present invention is described further below in conjunction with accompanying drawing:
Fig. 1 is three-dimensional structure diagram of the present invention;
Fig. 2 is cut-away view of the present invention;
Fig. 3 is the three-dimensional structure diagram of air-pressure disc brake;
Fig. 4 is the cut-away view of air-pressure disc brake;
Fig. 5 is the structural representation of supporting base;
Fig. 6 is the structural representation of push pedal;
Fig. 7 is pressure arm and the assembling schematic representation of adjusting cover.
Embodiment
With reference to Fig. 1-4, a kind of rocker compensating gear of air-pressure disc brake, is connected regulating mechanism 2 is initiatively united driving with the drive mechanism of driven regulating mechanism 3, by active regulating mechanism 2 and driven regulating mechanism 3 push pedal 7 at the active regulating mechanism 2 of comprise boosting mechanism, supporting base 1, being located at supporting base 1 two ends and driven regulating mechanism 3; Described active regulating mechanism 2 comprises that the driving shaft assembly and the movable set that are rotatably connected on supporting base 1 one ends raise a whole set of 21 at the driving shaft assembly; Described boosting mechanism drives initiatively regulating mechanism 2 actions when driving supporting base 1 advances, transmission by drive mechanism makes driven regulating mechanism 3 and active regulating mechanism 2 run-in synchronisms promotion push pedal 7 finish the gap compensation, by position structure lasso 23 is installed on the driving shaft assembly, this lasso 23 with adjust cover 21 and hold interlock tightly by torsion spring 22.
The driving shaft assembly comprises driving shaft lining 20 and is screwed in driving shaft 28 in the driving shaft lining 20; Described driven regulating mechanism 3 comprises driven shaft lining 30 and is screwed in driven shaft 31 in the driven shaft lining 30; Drive mechanism is arranged between driving shaft lining 20 and the driven shaft lining 30, and driving shaft 28 is fixed in respectively in the push pedal 7 with the bottom of driven shaft 31; Present embodiment provides a kind of preferred affixed mode, with reference to Fig. 2,6, bottom at driving shaft 28 and driven shaft 31 respectively is provided with a cylindrical connecting head, push pedal 7 be provided with two circular holes 71 respectively with above-mentioned two cylindrical connecting head clampings, also can increase cylinder plug 72 between driving shaft 28 bottoms and the push pedal 7 and improve join strength, driven shaft 31 also is like this.
Position structure comprises holddown spring 25, back-up ring pad 24 and the lasso pad 26 that is sleeved on driving shaft lining 20 upper ends, and described lasso 23 is pressed on the driving shaft lining 20 by this position structure; Holddown spring 25, back-up ring pad 24 all belong to general part with lasso pad 26, are convenient to make and maintenance.
Drive mechanism comprises the driving gear 201 be located on the driving shaft lining 20, be located at driven gear 301 on the driven shaft lining 30, be located at the driving gear 11 that connects driving gear 201 and driven gear 301 on the supporting base 1.The synchronism of three gear meshing engagement structures is good.
Boosting mechanism comprises pressure arm 4 and roller bearing 41, and pressure arm 4 one ends are provided with needle bearing secondary 42 and are rotationally connected with roller bearing 41, and the effect by needle bearing pair 42 makes pressure arm 4 produce thrust when roller bearing 41 rotates to be used for promoting supporting base 1 and to advance.With reference to Fig. 7, be provided with driving lever 43 in pressure arm 4 one sides, to adjust cover 21 and be provided with breach 210, described driving lever 43 is inserted in the breach 210, stirs 21 rotations of adjustment cover by driving lever 43 when pressure arm 4 rotates.
With reference to Fig. 1, boosting mechanism and supporting base 1 connect as one in the caliper 6 that is installed in air-pressure disc brake by retainer 5.Be convenient to the assembling maintenance of break, improve work efficiency of workers.With reference to Fig. 5, the two ends up and down of supporting base 1 respectively are provided with two plane of orientations 12, and supporting base 1 is slidingly matched by plane of orientation 12 and caliper 6 inwalls.So just can guarantee that whole rocker compensating gear does not rock in caliper 6 inside, make mechanism's smooth working, noise free in the process that vehicle travels has no abnormal sound.
With reference to Fig. 3, driving shaft lining 20 upper ends also are provided with regulates 27, and described caliper 6 corresponding 27 position of regulating are provided with dustproof plug 61, and dustproof plug 61 plays dustproof effect when flat, takes off dustproof plug 61 rotations and regulates 27 manual adjusting plays just.
Working principle:
When car brakeing, external force (brake chamber) promotes pressure arm 4, pressure arm 4 increases the back with thrust and promotes supporting base 1 displacement, drives push pedal 7 by the active regulating mechanism 2 on the supporting base 1 and driven regulating mechanism 3 and promotes friction plate 8 toward the motion of brake disc direction, finishes the car brakeing process.
When pressure arm 4 rotates, pressure arm 4 one sides are provided with driving lever 43 and stir 21 rotations of adjustment cover, adjusting rotatablely moving of cover 21 is delivered on the lasso 23 by torsion spring 22, lasso 23, driving shaft lining 20 are together rotated, because push pedal 7 has limited rotatablely moving of driving shaft 28, produce relative rotation between driving shaft 28 and the driving shaft lining 20, driving shaft 28 is screwed out and is promoted the push pedal 7 friction compensation sheets 8 wearing and tearing gap of generation afterwards; When no excessive brake clearance need compensate, can not produce relative rotation between driving shaft 28 and the driving shaft lining 20, torsion spring 22 is spreading thereupon, can be rotated further and adjust cover 21, be the function of one-way clutch, guarantee can not transship that be guaranteed the working life of break.
In 20 rotations of driving shaft lining, by drive mechanism driven shaft lining 30 is rotated simultaneously, driven shaft 31 and driving shaft 28 synchronous drive push pedals 7 guarantee the accuracy that the gap is adjusted.
Except above preferred embodiment, the present invention also has other mode of execution, and those skilled in the art can make various changes and distortion according to the present invention, only otherwise break away from spirit of the present invention, all should belong to the defined scope of claims of the present invention.
Claims (9)
1. the rocker compensating gear of an air-pressure disc brake, is connected regulating mechanism (2) is initiatively united driving with the drive mechanism of driven regulating mechanism (3), by active regulating mechanism (2) and driven regulating mechanism (3) push pedal (7) at the active regulating mechanism (2) of comprise boosting mechanism, supporting base (1), being located at supporting base (1) two ends and driven regulating mechanism (3); Described active regulating mechanism (2) comprises that the driving shaft assembly and the movable set that are rotatably connected on supporting base (1) one end raise a whole set of (21) at the driving shaft assembly; Described boosting mechanism drives initiatively regulating mechanism (2) action when driving supporting base (1) advances, transmission by drive mechanism makes driven regulating mechanism (3) and active regulating mechanism (2) run-in synchronism promotion push pedal (7) finish the gap compensation, it is characterized in that: also comprise by position structure being installed in lasso (23) on the driving shaft assembly, described lasso (23) with adjust cover (21) and hold interlock tightly by torsion spring (22).
2. the rocker compensating gear of a kind of air-pressure disc brake according to claim 1 is characterized in that: described driving shaft assembly comprises driving shaft lining (20) and is screwed in driving shaft (28) in the driving shaft lining (20); Described driven regulating mechanism (3) comprises driven shaft lining (30) and is screwed in the interior driven shaft (21) of driven shaft lining (30); Described drive mechanism is arranged between driving shaft lining (20) and the driven shaft lining (30), and described driving shaft (28) is fixed in respectively in the push pedal (7) with the bottom of driven shaft (21).
3. the rocker compensating gear of a kind of air-pressure disc brake according to claim 2, it is characterized in that: described position structure comprises holddown spring (25), back-up ring pad (24) and the lasso pad (26) that is sleeved on driving shaft lining (20) upper end, and described lasso (23) is pressed on the driving shaft lining (20) by this position structure.
4. according to the rocker compensating gear of claim 2 or 3 described a kind of air-pressure disc brakes, it is characterized in that: described drive mechanism comprises the driving gear (201) be located on the driving shaft lining (20), be located at driven gear (301) on the driven shaft lining (30), be located at supporting base (1) goes up the driving gear (11) that connects driving gear (201) and driven gear (301).
5. the rocker compensating gear of a kind of air-pressure disc brake according to claim 1 and 2, it is characterized in that: described boosting mechanism comprises pressure arm (4) and roller bearing (41), described pressure arm (4) one ends are provided with needle bearing pair (42) and roller bearing (41) and are rotationally connected, and the effect by needle bearing pair (42) makes pressure arm (4) produce thrust when roller bearing (41) rotates to advance for promotion supporting base (1).
6. the rocker compensating gear of a kind of air-pressure disc brake according to claim 5, it is characterized in that: described pressure arm (4) one sides are provided with driving lever (43), adjust cover (21) and be provided with breach (210), described driving lever (43) is inserted in the breach (210), stirs adjustment cover (21) rotation by driving lever (43) when pressure arm (4) rotates.
7. the rocker compensating gear of a kind of air-pressure disc brake according to claim 2, it is characterized in that: described boosting mechanism and supporting base (1) connect as one in the caliper (6) that is installed in air-pressure disc brake by retainer (5).
8. the rocker compensating gear of a kind of air-pressure disc brake according to claim 7, it is characterized in that: the two ends up and down of described supporting base (1) respectively are provided with two plane of orientations (12), and supporting base (1) is slidingly matched by plane of orientation (12) and caliper (6) inwall.
9. according to the rocker compensating gear of claim 7 or 8 described a kind of air-pressure disc brakes, it is characterized in that: described driving shaft lining (20) upper end also is provided with regulates head (27), and corresponding head (27) position of regulating of described caliper (6) is provided with dustproof plug (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110197219 CN102252050B (en) | 2011-07-13 | 2011-07-13 | Clearance compensation mechanism of gas-pressure plate type brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110197219 CN102252050B (en) | 2011-07-13 | 2011-07-13 | Clearance compensation mechanism of gas-pressure plate type brake |
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| Publication Number | Publication Date |
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| CN102252050A CN102252050A (en) | 2011-11-23 |
| CN102252050B true CN102252050B (en) | 2013-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110197219 Active CN102252050B (en) | 2011-07-13 | 2011-07-13 | Clearance compensation mechanism of gas-pressure plate type brake |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103335771B (en) * | 2013-07-14 | 2014-12-03 | 湖北精川智能装备股份有限公司 | Sliding force detection device used for air disc brake |
| CN104019163B (en) * | 2014-06-28 | 2016-05-11 | 枣庄泰德机械有限公司 | Commercial car disc type brake automatic adjustment mechanism for gap |
| CN105485224B (en) * | 2016-01-14 | 2017-08-01 | 枣庄泰德机械有限公司 | Brake clearance automatic mechanism assembly |
| CN107524737B (en) * | 2017-08-28 | 2023-08-01 | 浙江万安科技股份有限公司 | Hydraulic parking brake and braking clearance compensation mechanism thereof |
| CN114526299A (en) * | 2022-01-24 | 2022-05-24 | 瑞立集团瑞安汽车零部件有限公司 | One-way clearance adjusting mechanism for air disc brake |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4311997C2 (en) * | 1993-04-13 | 2001-07-12 | Sauer Sundstrand Gmbh & Co | hydraulic motor |
| GB9716363D0 (en) * | 1997-08-02 | 1997-10-08 | Lucas Ind Plc | Improvements relating to disc brakes |
| CN2414958Y (en) * | 2000-03-24 | 2001-01-17 | 李丽 | Automatic brake friction plate wear compensator for car |
| CN1831362A (en) * | 2005-03-11 | 2006-09-13 | 段昌金 | Automatic regulator |
| CN201162795Y (en) * | 2008-03-11 | 2008-12-10 | 浙江亚太机电股份有限公司 | Vehicle electronic-mechanical braking system actuating mechanism |
| CN202251585U (en) * | 2011-07-13 | 2012-05-30 | 浙江万安科技股份有限公司 | Backlash compensating mechanism of air disc brake |
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Denomination of invention: A gap compensation mechanism for air disc brake Effective date of registration: 20200730 Granted publication date: 20130904 Pledgee: Diankou sub branch of Zhejiang Zhuji Rural Commercial Bank Co., Ltd Pledgor: ZHEJIANG VIE SCIENCE & TECHNOLOGY Co.,Ltd. Registration number: Y2020330000528 |
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