CN103899691A - Gap adjustment device of draw-arm-type brake - Google Patents
Gap adjustment device of draw-arm-type brake Download PDFInfo
- Publication number
- CN103899691A CN103899691A CN201410163071.3A CN201410163071A CN103899691A CN 103899691 A CN103899691 A CN 103899691A CN 201410163071 A CN201410163071 A CN 201410163071A CN 103899691 A CN103899691 A CN 103899691A
- Authority
- CN
- China
- Prior art keywords
- supporting
- fixture block
- supports
- support
- self
- 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.)
- Pending
Links
Images
Landscapes
- Braking Arrangements (AREA)
Abstract
The invention discloses a gap adjustment device of a draw-arm-type brake. The gap adjustment device comprises a first supporting clamping block (6), a supporting unthreaded hole sleeve (7), a self-adjustment ratchet wheel and screw shaft (8), a supporting threaded sleeve (9) and a second supporting clamping block (10). A left brake shoe clamping notch (6a) is formed in the left end of the first supporting clamping block (6), a right brake shoe and draw arm clamping notch (10a) is formed in the right end of the second supporting clamping block (10), and the right end of the first supporting clamping block (6) is fixedly connected with the supporting unthreaded hole sleeve (7). The self-adjustment ratchet wheel and screw shaft (8) is composed of an unthreaded rod (8a), a ratchet wheel (8c) and a threaded shaft (8b), wherein the unthreaded rod (8a), the ratchet wheel (8c) and the threaded shaft (8b) are connected from left to right in sequence, the unthreaded rod (8a) stretches into the supporting unthreaded hole sleeve (7), the threaded shaft (8b) is matched with the supporting threaded sleeve (9) in a threaded mode, and the right end of the supporting threaded sleeve (9) is fixedly connected with the second supporting clamping block (10). When a friction pierce abrades, the gap between the friction piece and a brake drum can be adjusted to achieve the best state.
Description
Technical field
The present invention relates to Brake for vehicle system, belong to mechanical brake brake assembly technical field, be specifically related to a kind of slack adjuster of draw-arm break.
Background technique
Braking system is the critical component that is related to safety of person vehicle, break belongs to most important safety, critical component in all moving vehicles, the braking system of automobile is divided into various structures form according to the requirement such as reliable, laborsaving, and draw-arm break is a kind of structure conventional in mechanical brake break.
In order to keep good retardation efficiency, between the friction plate in brake shoe assembly and brake drum, to there is a best clearance value.Along with friction disc wear, the gap between brake shoe assembly and brake drum increases, and need to have the device of an adjusting play.
Existing non-self-regulated draw-arm break, its slack adjuster comprises self-regulated plate and the ratchet cover plate, by stirring self-regulated plate, slide block is combined with the next tooth of the ratchet cover plate.This structure needs artificial moving tooth adjusting play, could meet safety traffic needs, often will be through adjusting and friction plate could be used to the limit for several times, and very trouble; The gap that veteran old driver adjusts may be more reasonable, and the gap that young driver recalls is probably not fully up to expectations.Institute's adjust the play is too small or at all very close to each other, and the consequence causing is to drag to stop, and moment of torsion, the oil consumption of meaningless increase vehicle are high, friction plate consumption fast, shorten the adverse effects such as vehicle service life; If the excesssive gap of adjusting, will increase brake petal and parking hand lever distance, likely cannot meet parking in action radius, there is potential safety hazard.
Summary of the invention
The present invention aims to provide a kind of slack adjuster of draw-arm break, and when after friction disc wear, the optimum state is arrived in the gap that can automatically adjust between brake drum.
For this reason, the technical solution adopted in the present invention is: a kind of slack adjuster of draw-arm break, comprise the first support fixture block (6), support unthreaded hole cover (7), self-regulated ratchet band screw axis (8), support swivel nut (9) and second and support fixture block (10), the described first left end head that supports fixture block (6) is provided with left brake shoe clamping breach (6a), the second right-hand member head that supports fixture block (10) is provided with right braking hoof and torque arm clamping breach (10a), the first right-hand member that supports fixture block (6) is fixed together with support unthreaded hole cover (7), described self-regulated ratchet band screw axis (8) is by the polished rod being from left to right connected successively (8a), ratchet (8c) and screw axis (8b) form, polished rod (8a) stretches into and supports in unthreaded hole cover (7), screw axis (8b) and support swivel nut (9) screw-thread fit, the right-hand member and second that supports swivel nut (9) supports fixture block (10) and is connected.
The working principle that said structure is installed to after draw-arm break is such: when after friction disc wear, while needing parking, parking torque arm is rotated around torque arm pin under the effect of wire-pulling force, self-regulated plate and parking torque arm connect in aggregates by spring, and then rotate, the hook portion of self-regulated plate is mated with the ratchet at self-regulated ratchet band screw axis middle part, self-regulated plate drives ratchet to rotate, thereby drive the second support fixture block to move right, second supports fixture block promotion right braking hoof moves right, thus the length that has extended whole slack adjuster; Because the two ends of slack adjuster is by clamping breach and left and right brake shoe clamping, thereby realize the object in automatic adjustment friction plate and brake drum gap.In the time that the gap of friction plate and brake drum increases, when brake shoe released amount exceedes certain limit, stay cord is moved self-regulated plate and the position of the next indented joint of ratchet to, drive the rotation of self-regulated ratchet screw axis, thereby increase the length of slack adjuster, brake shoe position is moved, recover normal clearance.
Be preferably, described first supports fixture block (6) and supports unthreaded hole cover (7) welding, supports swivel nut (9) and second and supports fixture block (10) welding.
The invention has the beneficial effects as follows: avoided because of gap between brake shoe assembly and brake drum is too small or at all very close to each other caused dragging stop, the series of problems such as the vehicle torque of stopping brought increases, oil consumption is high, friction plate consumption fast because dragging, vehicle service life shortening; And the brake petal bringing because of excesssive gap and parking hand lever are apart from increase, guarantee vehicle parking in action radius, have improved driving safety.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of self-regulated ratchet band screw axis.
Fig. 3 is the scheme of installation of the present invention on draw-arm break.
Fig. 4 is the sectional view of Fig. 3.
Embodiment
Below by embodiment also by reference to the accompanying drawings, the invention will be further described:
As shown in Figure 1, slack adjuster is supported fixture block 10 and is formed by the first support fixture block 6, support unthreaded hole cover 7, self-regulated ratchet band screw axis 8, support swivel nut 9 and second.Support unthreaded hole cover 7, self-regulated ratchet band screw axis 8, support swivel nut 9 coaxially arrange.The first left end head that supports fixture block 6 is provided with left brake shoe clamping breach 6a, and the second right-hand member head that supports fixture block 10 is provided with right braking hoof and torque arm clamping breach 10a.
The first right-hand member that supports fixture block 6 is fixed together with support unthreaded hole cover 7.Shown in Fig. 2, self-regulated ratchet band screw axis 8 is made up of the polished rod 8a being from left to right connected successively, ratchet 8c and screw axis 8b.Polished rod 8a stretches into and supports in unthreaded hole cover 7, and screw axis 8b supports fixture block 10 and is connected with support swivel nut 9 screw-thread fit, the right-hand member and second that supports swivel nut 9.
In conjunction with Fig. 1---shown in Fig. 4, draw-arm break is made up of brake drum 1, brake pump 2, brake shoe assembly 3, parking torque arm 4, self-regulated plate 5, slack adjuster, shoe spring 11, torque arm pin 12 and stay cord guide pad 13 etc.Brake shoe assembly 3 comprises left brake shoe, right braking hoof, and the arranged outside of each brake shoe has friction plate.Left and right brake shoe is strained by shoe spring 11.On stay cord guide pad 13, be provided with stay cord via hole 13a, pass through for stay cord, stay cord is fixed on the lower end of parking torque arm 4 through stay cord guide pad 13.Parking torque arm 4 is hinged on torque arm pin 12 with self-regulated plate 5, and parking torque arm 4 is solidly fixed with self-regulated plate 5, and self-regulated plate 5 is rotated with parking torque arm 4, in addition, also comprises self-regulated plate return spring.Torque arm pin 12 is fixed on brake shoe assembly 3.Totally two of shoe springs 11, between the upper and lower every setting, the shoe spring 11 that is positioned at top is enclosed within outside slack adjuster.
Slack adjuster is stuck on left brake shoe by left brake shoe clamping breach 6a, is stuck in right braking hoof and parking torque arm 4 by right braking hoof and torque arm clamping breach 10a.The ratchet 8c that stirs self-regulated ratchet band screw axis 8 by self-regulated plate 5 rotates, thereby increases the length of slack adjuster, and the two ends of slack adjuster are stuck on brake shoe assembly 3, and brake shoe assembly 3 is shifted, with friction compensation pad wear gap.
Claims (2)
1. the slack adjuster of a draw-arm break, it is characterized in that: comprise the first support fixture block (6), support unthreaded hole cover (7), self-regulated ratchet band screw axis (8), support swivel nut (9) and second and support fixture block (10), the described first left end head that supports fixture block (6) is provided with left brake shoe clamping breach (6a), the second right-hand member head that supports fixture block (10) is provided with right braking hoof and torque arm clamping breach (10a), the first right-hand member that supports fixture block (6) is fixed together with support unthreaded hole cover (7), described self-regulated ratchet band screw axis (8) is by the polished rod being from left to right connected successively (8a), ratchet (8c) and screw axis (8b) form, polished rod (8a) stretches into and supports in unthreaded hole cover (7), screw axis (8b) and support swivel nut (9) screw-thread fit, the right-hand member and second that supports swivel nut (9) supports fixture block (10) and is connected.
2. the slack adjuster of draw-arm break according to claim 1, it is characterized in that: described first supports fixture block (6) and support unthreaded hole cover (7) welding, supports swivel nut (9) and second and supports fixture block (10) welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163071.3A CN103899691A (en) | 2014-04-22 | 2014-04-22 | Gap adjustment device of draw-arm-type brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410163071.3A CN103899691A (en) | 2014-04-22 | 2014-04-22 | Gap adjustment device of draw-arm-type brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103899691A true CN103899691A (en) | 2014-07-02 |
Family
ID=50991204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410163071.3A Pending CN103899691A (en) | 2014-04-22 | 2014-04-22 | Gap adjustment device of draw-arm-type brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103899691A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2226610A (en) * | 1988-12-15 | 1990-07-04 | Automotive Products Plc | Automatic adjuster for drum brake |
| CN2694046Y (en) * | 2003-09-28 | 2005-04-20 | 重庆红宇精密工业有限责任公司 | Drum brake with self-adjusting function when parking |
| CN201159255Y (en) * | 2008-02-22 | 2008-12-03 | 浙江亚太机电股份有限公司 | Automatic regulating apparatus for clearance between drum brake shoes |
| CN201329859Y (en) * | 2008-11-25 | 2009-10-21 | 辽宁曙光汽车集团股份有限公司 | Hydraulic drum type brake with upper-lower double push rod halt vehicle mechanism |
| EP2626589A1 (en) * | 2012-02-07 | 2013-08-14 | Daico Automotive Products S.p.a. | Automatic play adjustment device for a drum brake |
| CN203796822U (en) * | 2014-04-22 | 2014-08-27 | 重庆市璧山宏向汽配有限公司 | Clearance adjusting device of arm pull brake |
-
2014
- 2014-04-22 CN CN201410163071.3A patent/CN103899691A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2226610A (en) * | 1988-12-15 | 1990-07-04 | Automotive Products Plc | Automatic adjuster for drum brake |
| CN2694046Y (en) * | 2003-09-28 | 2005-04-20 | 重庆红宇精密工业有限责任公司 | Drum brake with self-adjusting function when parking |
| CN201159255Y (en) * | 2008-02-22 | 2008-12-03 | 浙江亚太机电股份有限公司 | Automatic regulating apparatus for clearance between drum brake shoes |
| CN201329859Y (en) * | 2008-11-25 | 2009-10-21 | 辽宁曙光汽车集团股份有限公司 | Hydraulic drum type brake with upper-lower double push rod halt vehicle mechanism |
| EP2626589A1 (en) * | 2012-02-07 | 2013-08-14 | Daico Automotive Products S.p.a. | Automatic play adjustment device for a drum brake |
| CN203796822U (en) * | 2014-04-22 | 2014-08-27 | 重庆市璧山宏向汽配有限公司 | Clearance adjusting device of arm pull brake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106321689B (en) | A kind of self-regulated manually driven drum brake | |
| CN102112772B (en) | Adjusting device for disk brake | |
| CN109630574A (en) | It is bonded drum type braking device step by step | |
| CN203796821U (en) | Pull arm type brake with automatic gap adjustment device | |
| CN203796819U (en) | Pull arm type brake with automaticgap adjusting function | |
| CN203796824U (en) | Drag arm type brake with clearance self-adjusting function | |
| CN205855750U (en) | For escalator or the extra brake devices of the driving means of footpath | |
| CN103899688A (en) | Dragging arm type brake with interval self-adjustment device | |
| CN103899687A (en) | Dragging arm type brake with interval self-adjustment function | |
| CN103899690A (en) | Pull-arm-type brake with gap self-adjusting function | |
| CN103899686A (en) | Arm-pulling type gap self-regulating brake | |
| CN203796822U (en) | Clearance adjusting device of arm pull brake | |
| CN203796820U (en) | Gap regulating mechanism suitable for draw arm type brake | |
| CN203796825U (en) | Gap self-adjusting component dedicated to pull arm type brake | |
| CN103899685A (en) | Self-gap-adjusting assembly of draw-arm-type brake | |
| CN104071718B (en) | A kind of steel wire rope takes up device in advance | |
| CN202579735U (en) | Parking brake for engineering vehicles | |
| CN103899691A (en) | Gap adjustment device of draw-arm-type brake | |
| CN103899684A (en) | Gap adjusting mechanism applicable to pull arm type brake | |
| CN101793297A (en) | Brake | |
| CN103899692A (en) | Special gap self-regulating assembly for arm-pulling type brake | |
| CN204643687U (en) | A kind of car hosit elevator case rope processing device | |
| CN107970617A (en) | A kind of wheeled tractor transfer of taper | |
| CN204979095U (en) | Area enlarges adjusting device's electronic nave boss floodgate | |
| CN206190772U (en) | Self -modulation manpower drive's drum brake |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140702 |