CN203796822U - Clearance adjusting device of arm pull brake - Google Patents
Clearance adjusting device of arm pull brake Download PDFInfo
- Publication number
- CN203796822U CN203796822U CN201420200369.2U CN201420200369U CN203796822U CN 203796822 U CN203796822 U CN 203796822U CN 201420200369 U CN201420200369 U CN 201420200369U CN 203796822 U CN203796822 U CN 203796822U
- Authority
- CN
- China
- Prior art keywords
- support
- fixture block
- supports
- self
- brake
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a clearance adjusting device of an arm pull brake, which comprises a first support fixture block (6), a support light hole sleeve (7), a self-adjusting ratchet belt screw shaft (8), a support screw sleeve (9) and a second support fixture block (10), wherein the left end head of the first support fixture block (6) is provided with a left brake hoof snap notch (6a); the right end head of the second support fixture block (10) is provided with a right brake hoof and arm pull snap notch (10a); the right end of the first support fixture block (6) is fixedly connected to the support light hole sleeve (7); the self-adjusting ratchet belt screw shaft (8) is constituted of a light rod (8a), a ratchet (8c) and a screw shaft (8b) that are connected in order from left to right; the light rod (8a) extends into the support light hole sleeve (7); the screw shaft (8b) is threadingly cooperated with the support screw sleeve (9); and the right end of the support screw sleeve (9) is fixedly connected with the second support fixture block (10). When a friction sheet is worn out, the clearance between the friction sheet and a brake drum can be automatically adjusted to a best state.
Description
Technical field
The utility model relates to Brake for vehicle system, belongs to mechanical brake brake assembly technical field, is 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, through adjusting and friction plate could be used to the limit for several times, bother very much; 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.
Model utility content
The utility model aims to provide a kind of slack adjuster of draw-arm break, after friction disc wear, can automatically adjust and brake drum between gap to the optimum state.
For this reason, the technological scheme that the utility model adopts 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: 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 realized the object in automatic adjustment friction plate and brake drum gap.When the gap of friction plate and brake drum increases, when brake shoe released amount surpasses certain limit, stay cord is moved self-regulated plate to position with the next indented joint of ratchet, 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 beneficial effects of the utility model are: 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 utility model.
Fig. 2 is the structural representation of self-regulated ratchet band screw axis.
Fig. 3 is the scheme of installation of the utility model 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 utility model is described in further detail:
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 consists 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 comprised 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, for stay cord, pass through, 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, by right braking hoof and torque arm clamping breach 10a, is stuck in right braking hoof and parking torque arm 4.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, makes brake shoe assembly 3 displacements, 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, 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 |
|---|---|---|---|
| CN201420200369.2U CN203796822U (en) | 2014-04-22 | 2014-04-22 | Clearance adjusting device of arm pull brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420200369.2U CN203796822U (en) | 2014-04-22 | 2014-04-22 | Clearance adjusting device of arm pull brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203796822U true CN203796822U (en) | 2014-08-27 |
Family
ID=51379034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420200369.2U Expired - Fee Related CN203796822U (en) | 2014-04-22 | 2014-04-22 | Clearance adjusting device of arm pull brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203796822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899691A (en) * | 2014-04-22 | 2014-07-02 | 重庆市璧山宏向汽配有限公司 | Gap adjustment device of draw-arm-type brake |
-
2014
- 2014-04-22 CN CN201420200369.2U patent/CN203796822U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899691A (en) * | 2014-04-22 | 2014-07-02 | 重庆市璧山宏向汽配有限公司 | Gap adjustment device of draw-arm-type brake |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106321689B (en) | A kind of self-regulated manually driven drum brake | |
| CN203796821U (en) | Pull arm type brake with automatic gap adjustment device | |
| CN104386069B (en) | A kind of overhead manned equipment and press rope wheel device thereof | |
| CN203796824U (en) | Drag arm type brake with clearance self-adjusting function | |
| CN203796822U (en) | Clearance adjusting device of arm pull brake | |
| CN203796819U (en) | Pull arm type brake with automaticgap adjusting function | |
| CN203796820U (en) | Gap regulating mechanism suitable for draw arm type brake | |
| CN205855750U (en) | For escalator or the extra brake devices of the driving means of footpath | |
| CN203796825U (en) | Gap self-adjusting component dedicated to pull arm type brake | |
| CN103899688A (en) | Dragging arm type brake with interval self-adjustment device | |
| CN103899686A (en) | Arm-pulling type gap self-regulating brake | |
| CN103899687A (en) | Dragging arm type brake with interval self-adjustment function | |
| CN103899690A (en) | Pull-arm-type brake with gap self-adjusting function | |
| CN202579735U (en) | Parking brake for engineering vehicles | |
| CN203516530U (en) | Wedge block type brake for vehicle | |
| CN104071718B (en) | A kind of steel wire rope takes up device in advance | |
| CN206206440U (en) | A kind of automatic continuous adjustable drum brake in gap | |
| CN101793297A (en) | Brake | |
| CN103899685A (en) | Self-gap-adjusting assembly of draw-arm-type brake | |
| CN103899691A (en) | Gap adjustment device of draw-arm-type brake | |
| CN103899684A (en) | Gap adjusting mechanism applicable to pull arm type brake | |
| CN103899692A (en) | Special gap self-regulating assembly for arm-pulling type brake | |
| CN204958078U (en) | But hauler in quick adjustment stopper clearance | |
| CN106641026B (en) | A kind of automatic continuous adjustable drum brake in gap | |
| CN202912612U (en) | Rope holding wheel with adjustable height |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20160422 |