CN202646473U - Brake shoe shaft - Google Patents
Brake shoe shaft Download PDFInfo
- Publication number
- CN202646473U CN202646473U CN 201220187289 CN201220187289U CN202646473U CN 202646473 U CN202646473 U CN 202646473U CN 201220187289 CN201220187289 CN 201220187289 CN 201220187289 U CN201220187289 U CN 201220187289U CN 202646473 U CN202646473 U CN 202646473U
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- CN
- China
- Prior art keywords
- shoe
- locking plate
- brake shoe
- shaft
- 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
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Abstract
The utility model provides a brake shoe shaft, which is characterized in that the circumferential surface of the top end part of the brake shoe shaft is provided with an annular groove which is used for being matched with a fixed locking plate, wherein the fixed locking plate is of a 3 shape. Due to adopting the brake shoe shaft, the mechanical failure is reduced, the repairing cost is saved, the vehicle dispatch rate is improved, the process is simple, and the improved effect is obvious.
Description
Technical field
The utility model relates to a kind of brake shoe bobbin, in particular for the brake shoe bobbin in the automotive brake.
Background technique
At present, the trailing wheel brake shoe bobbin of the most of passenger vehicles more than five tons or lorry all is the pin formula usually, and an end wherein is fixed end, generally fix with locking plate, have radially keyway on the pin, adopt a locking plate to be inserted in the middle of two skewed slots of two shoe shafts, and fixing at break in order to bolt.The advantage that adopts this mode is that processing is simple, installs simply, simultaneously easy-to-operat.
But in actual use, one following problem can appear: automobile in braking since shoe plate with shoe shaft with center rotating, and because locking plate fixing, shoe shaft can not rotate with shoe plate, has produced thus relative soft impact.Because increasing of braking number of times will produce shoe shaft to the infringement of the impact of locking plate, to the lock function of shoe shaft its shoe shaft is slowly ejected and cause locking plate to lose along axis.If to the brake drum direction, the fixing bolt of the brake drum of will grinding away so causes the brake drum set screw nut by shoe plate pin scratching situation; If to other direction, will deviate from so, make shoe plate not have fixed end and in drum, lose Braking efficiency.This situation all occurred on a lot of vehicles, can only change drum bolt assembly, shoe shaft and locking plate after the appearance.If the manufactured size precision of locking plate can not reach transition fit, the cycle of damaging so can be shorter, thereby cause cost of material, the raising of artificial maintenance cost, and the reduction of the bus dispatching rate of vehicle.
Even if there is not the generation of above-mentioned situation, because shoe shaft is under the fixation of locking plate and can not to brake the pin-and-hole transfer moving again, the lopsided wear of the shoe shaft that causes under the ringing of shoe plate braking makes shoe shaft lose effect to the shoe plate axially locating.In addition, of long duration because shoe shaft fixes, if maintain not prompt enoughly, be easy to cause rust dead, cause the shoe plate can not return and braking drag.In maintenance, get like that the difficulty that the dead shoe shaft of rust causes again new maintenance.
Once proposed fixing shoe shaft is carried out following improvement.Comprising method one, at the punching two ends of shoe plate pin and be processed into tapped hole, its two ends are fixed with large pad; Method two, according to front wheel brake fixedly the shoe plate pin fixation method the brake shoe pin hold hole one side perforating cross the button and on the shoe plate pin, stamp cone shape hole and fix with bolt.Method three, increasing locking plate thickness.But the effect of said method is not very desirable.
Therefore it is necessary providing a kind of improved brake shoe bobbin.
The model utility content
The purpose of this utility model provides a kind of improved brake shoe bobbin, and shoe shaft damages the problems such as fixing bolt of the brake drum of grinding away to the impact of locking plate in the prior art to solve.
For addressing the above problem, the utility model provides following technological scheme.
A kind of brake shoe bobbin, wherein this shoe shaft is column, is provided with annular groove at its tip portion side face, in order to cooperating with fixing locking plate, this fixedly locking plate be figure-three.
Preferably, this annular groove adopts turning to form.
A kind of break, it comprises brake shoe, the brake shoe bobbin fixedly holds the hole, shoe shaft is locking plate fixedly, the locking plate fixing bolt, and above-mentioned brake shoe bobbin, wherein said fixedly locking plate and described brake shoe bobbin fixedly hold the hole and are used for fixing described shoe shaft, and described locking plate fixing bolt is used for fixing described fixedly locking plate.
Description of drawings
Fig. 1 is the structural representation of break of the prior art;
Fig. 2 is the sectional view of shoe shaft of the prior art;
Fig. 3 is the sectional view of the shoe shaft in the utility model;
Fig. 4 is the structural representation of the locking plate in the utility model.
Among the figure: 1 brake shoe, 2 brake shoe anchor bolts fixedly hold the hole, 3 brake shoe anchor bolts (being shoe shaft), 4 shoe shafts are locking plate fixedly, 5 locking plate fixing bolts, 6 annular grooves
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.
As shown in Figure 1, break of the prior art comprises with lower member: when the automobile in travelling is taked brake measure, can make brake shoe under the effect of brake cam so that brake shoe rotates around shoe shaft, thereby make it be adjacent to the brake shoe 1 that on brake drum, produces braking action; Be used for when automobile brake, making brake shoe under the effect of brake cam, to make brake shoe around the brake shoe anchor bolt (shoe shaft) 3 that supports Fixed-point Motion of A; The brake shoe anchor bolt that is used for fixing brake shoe anchor bolt 3 (being shoe shaft) fixedly holds hole 2 (being that shoe shaft fixedly holds the hole); Be used for fixing shoe shaft, make fixedly locking plate 4 of shoe shaft that shoe shaft can not produce axial float; And the locking plate fixing bolt 5 that is used for fixing this locking plate 4.
Referring to attached Fig. 1 and 2, shoe shaft of the prior art is pin-shaped, is provided with skewed slot on it, and the utility model is changed into the skewed slot of shoe shaft at its side face circular annular groove 6 is set, as shown in Figure 3.Thereby the rotation that does not limit the shoe plate pin only removes to limit the axial float of shoe plate pin, has reduced the eccentric wear of shoe plate pin, can reduce again the moving resistance of brake shoe.Simultaneously with shoe shaft fixedly locking plate make figure-three into, as shown in Figure 4, fixing just passable with fixing bolt.
Adopt technique scheme can reach following technique effect.
1, shoe shaft can freely rotate fixedly holding in the hole trace, like this owing to the rotation of shoe shaft so that the wearing and tearing of shoe shaft become very even, thereby greatly prolonged working life of shoe shaft.
2, because the rotation of shoe shaft and so that automobile has reduced the rotational resistance of shoe plate when braking, so that braking-force ratio adopts the braking of prior art shoe shaft more reliable.
3, fixedly locking plate has reduced soft impact, and its area of contact with shoe shaft has also increased than in the past more than 4 times in addition, thereby has greatly increased antiwear property, and has greatly prolonged working life.
4, owing to be annular groove, do not have the direction restriction, therefore install simply, just directly install can, do not need to adjust again the correspondence direction of grooving and key.
After improving, reduced the generation of mechanical failure, saved maintenance cost, improved the vehicle bus dispatching rate.The method technique is simple, and improvement effect is obvious.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (2)
1. brake shoe bobbin, wherein this shoe shaft is column, is provided with annular groove at its tip portion side face, in order to cooperating with fixing locking plate, this fixedly locking plate be figure-three.
2. brake shoe bobbin according to claim 1, wherein this annular groove adopts turning to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187289 CN202646473U (en) | 2012-04-24 | 2012-04-24 | Brake shoe shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187289 CN202646473U (en) | 2012-04-24 | 2012-04-24 | Brake shoe shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646473U true CN202646473U (en) | 2013-01-02 |
Family
ID=47415584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220187289 Expired - Fee Related CN202646473U (en) | 2012-04-24 | 2012-04-24 | Brake shoe shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202646473U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050992A (en) * | 2016-08-15 | 2016-10-26 | 合肥万向钱潮汽车零部件有限公司 | Shoe shaft for automobile brake bottom plate |
-
2012
- 2012-04-24 CN CN 201220187289 patent/CN202646473U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050992A (en) * | 2016-08-15 | 2016-10-26 | 合肥万向钱潮汽车零部件有限公司 | Shoe shaft for automobile brake bottom plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20130424 |