CN205859008U - Drum brake - Google Patents
Drum brake Download PDFInfo
- Publication number
- CN205859008U CN205859008U CN201620856659.1U CN201620856659U CN205859008U CN 205859008 U CN205859008 U CN 205859008U CN 201620856659 U CN201620856659 U CN 201620856659U CN 205859008 U CN205859008 U CN 205859008U
- Authority
- CN
- China
- Prior art keywords
- brake
- shoe
- drag ring
- drum
- plate
- 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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- Braking Arrangements (AREA)
Abstract
The utility model discloses a kind of drum brake, including back-plate and brake drum, two brake-shoes it are symmetrically installed with on described back-plate, the fixing end of brake-shoe described in two is rotatably assorted with described back-plate by pivot pin respectively, is provided with brake between the movable end of brake-shoe described in two；It is respectively arranged with return spring between the corresponding fixing end of brake-shoe described in two and between respective activity end；The inner circumferential side of described brake drum is circumferentially arranged drag ring, and some louvre is distributed on described drag ring, and the inner peripheral surface of described drag ring constitutes friction pair braking surface with the outer surface of described brake-shoe.This utility model makes the abrasion reduction of drag ring during braking, not only extends the service life of drag ring, and adds frictional damping effect；The heat produced during frictional damping passes to brake drum hardly, thus avoids the thermal deformation of brake drum, improves the serviceability of brake.
Description
Technical field
This utility model relates to Brake for vehicle technical field, is specifically related to a kind of drum brake.
Background technology
Brake is to have the device making moving component deceleration, stopping or keeping the functions such as halted state, is to make in machinery
Movement parts stop or slow down machine components.Brake for vehicle mainly has drum brake and disk brake two kind at present
Type.
The brake-shoe of drum brake is positioned at inside brake drum, and during brake, brake-shoe is flared out, friction brake drum interior
Side and the purpose that reaches to brake, can assemble substantial amounts of heat, brake-shoe and brake drum under the influence of high temperature easily in braking procedure
Produce extremely complex deformation, easily produce fading of brake and chattering phenomenon, cause retardation efficiency to decline.Traditional drum brake
The friction plate of device is all mounted on brake-shoe, and meeting preferential wear friction plate in braking procedure, this results in the use of friction plate
Life-span is the shortest, also wears out brake drum, affect the use of brake drum while friction plate self abrasion.
Utility model content
Technical problem to be solved in the utility model is to provide the service life of a kind of beneficially prolongation friction plate, improves system
The drum brake of the serviceability of dynamic device.
For solving above-mentioned technical problem, the technical solution of the utility model is: drum brake, including back-plate and system
Dynamic drum, described back-plate is symmetrically installed with two brake-shoes, and the fixing end of brake-shoe described in two is respectively by pivot pin and institute
State back-plate to be rotatably assorted, between the movable end of brake-shoe described in two, be provided with brake；Brake-shoe described in two
It is respectively arranged with return spring between corresponding fixing end and between respective activity end；The inner circumferential side of described brake drum circumferentially sets
It is equipped with drag ring, the appearance of some louvre, the inner peripheral surface of described drag ring and described brake-shoe on described drag ring, is distributed
Face constitutes friction pair braking surface.
As preferred technical scheme, described brake includes being installed at the bottom of described braking by cam axle
Driving cam on plate, the movable end of brake-shoe described in two is fixedly installed the driven rolling matched with described driving cam respectively
Wheel.
As preferred technical scheme, the outer surface of described brake-shoe is provided with brake(-holder) block；The inner circumferential of described drag ring
Face constitutes friction pair braking surface with the outer surface of described brake(-holder) block.
As preferred technical scheme, described drag ring includes the friction plate of more than three, two adjacent friction plates it
Between be provided with gap.
Owing to have employed technique scheme, this utility model has the advantages that the inner circumferential side of described brake drum
Circumferentially arranged have drag ring so that drag ring be all surrounded brake-shoe and there is not absent region, due to drag ring area increase
Greatly so that during braking, the abrasion of drag ring reduces, not only extend the service life of drag ring, and add frictional damping effect
Really；Simultaneously because drag ring material itself has certain thermal insulation, during frictional damping produce heat taken away by louvre and
Pass to brake drum hardly, thus avoid the thermal deformation of brake drum, improve the serviceability of brake.
Accompanying drawing explanation
The following drawings is only intended to, in schematically illustrating this utility model and explaining, not limit model of the present utility model
Enclose.Wherein:
Fig. 1 is the structural representation of this utility model embodiment；
Fig. 2 is the structural representation of friction plate.
In figure: 1-back-plate；2-brake drum；3-brake-shoe；4-pivot pin；5-return spring；6-drag ring；7-dispels the heat
Hole；8-camshaft；9-drives cam；10-return idler；11-brake(-holder) block；12-friction plate；13-gap.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, this utility model is expanded on further.In the following detailed description, only by saying
Bright mode describes some one exemplary embodiment of the present utility model.Undoubtedly, those of ordinary skill in the art is permissible
Recognize, in the case of without departing from spirit and scope of the present utility model, can be by various different modes to described
Embodiment is modified.Therefore, accompanying drawing and description are inherently protection that is the most illustrative rather than that be used for limiting claim
Scope.
As depicted in figs. 1 and 2, drum brake, including back-plate 1 and brake drum 2, symmetrical on described back-plate 1
Being provided with two brake-shoes 3, the fixing end of brake-shoe 3 described in two is rotatably assorted with described back-plate 1 by pivot pin 4 respectively,
It is provided with brake between the movable end of brake-shoe 3 described in two；Between the corresponding fixing end of brake-shoe 3 described in two and
Return spring 5 it is respectively arranged with between respective activity end；The inner circumferential side of described brake drum 2 is circumferentially arranged drag ring 6, described
Some louvre 7 is distributed on drag ring 6, and the inner peripheral surface of described drag ring 6 constitutes friction pair with the outer surface of described brake-shoe 3
Braking surface.So, drag ring be all surrounded brake-shoe and there is not absent region, due to drag ring area increase so that
During braking, the abrasion of drag ring reduces, and not only extends the service life of drag ring, and adds frictional damping effect；Simultaneously
Owing to drag ring material itself has certain thermal insulation, during frictional damping produce heat taken away by louvre 7 and hardly
Brake drum 2 can be passed to, thus avoid the thermal deformation of brake drum 2, improve the serviceability of brake.
In the present embodiment, described brake includes being rotated by camshaft 8 being installed on described back-plate 1
Driving cam 9, the movable end of brake-shoe 3 described in two is fixedly installed the return idler matched with described driving cam 9 respectively
10.It is of course also possible to use the driving means of other forms, such as wheel cylinder etc..
In order to reduce the abrasion of brake-shoe, improve its service life, the outer surface of described brake-shoe 3 is preferably provided braking
Sheet 11；Now, the inner peripheral surface of described drag ring 6 constitutes friction pair braking surface with the outer surface of described brake(-holder) block 11.
It addition, described drag ring 6 is preferably made up of the friction plate 12 of more than three, in the present embodiment as a example by 4, and phase
It is provided with gap 13 between two adjacent friction plates 12, is so more convenient for changing, and can change one by one, safeguard into reduce
This.
The foregoing is only the schematic detailed description of the invention of this utility model, be not limited to model of the present utility model
Enclose.Any those skilled in the art, equivalent done on the premise of without departing from design of the present utility model and principle becomes
Change and amendment, the scope of this utility model protection all should be belonged to.
Claims (4)
1. drum brake, including back-plate and brake drum, described back-plate is symmetrically installed with two brake-shoes, and it is special
Levy and be: the fixing end of brake-shoe described in two is rotatably assorted with described back-plate by pivot pin respectively, brake-shoe described in two
Brake it is provided with between movable end；Divide between the corresponding fixing end of brake-shoe described in two and between respective activity end
It is not provided with return spring；The inner circumferential side of described brake drum is circumferentially arranged drag ring, is distributed some on described drag ring
Louvre, the inner peripheral surface of described drag ring constitutes friction pair braking surface with the outer surface of described brake-shoe.
2. drum brake as claimed in claim 1, it is characterised in that: described brake includes being turned by camshaft
The dynamic driving cam being installed on described back-plate, the movable end of brake-shoe described in two is fixedly installed and described driving respectively
The return idler that cam matches.
3. drum brake as claimed in claim 1, it is characterised in that: it is provided with braking on the outer surface of described brake-shoe
Sheet；The inner peripheral surface of described drag ring constitutes friction pair braking surface with the outer surface of described brake(-holder) block.
4. the drum brake as described in claim 1,2 or 3, it is characterised in that: described drag ring includes more than three rub
Pad, is provided with gap between two adjacent friction plates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620856659.1U CN205859008U (en) | 2016-08-09 | 2016-08-09 | Drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620856659.1U CN205859008U (en) | 2016-08-09 | 2016-08-09 | Drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205859008U true CN205859008U (en) | 2017-01-04 |
Family
ID=57657257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620856659.1U Expired - Fee Related CN205859008U (en) | 2016-08-09 | 2016-08-09 | Drum brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205859008U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859697A (en) * | 2017-07-13 | 2018-03-30 | 周广如 | Automobile using arrestment mechanism and the wheel hub being used cooperatively with the arrestment mechanism |
| CN112627592A (en) * | 2020-12-22 | 2021-04-09 | 天津砼天建筑工程有限公司 | Structure braced system encorbelments |
| CN115430072A (en) * | 2021-06-03 | 2022-12-06 | 贝加工业有限公司 | Drum brake falling protector |
| CN117267285A (en) * | 2023-11-21 | 2023-12-22 | 山西汤荣机械制造股份有限公司 | Brake drum convenient to heat dissipation and casting device thereof |
-
2016
- 2016-08-09 CN CN201620856659.1U patent/CN205859008U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107859697A (en) * | 2017-07-13 | 2018-03-30 | 周广如 | Automobile using arrestment mechanism and the wheel hub being used cooperatively with the arrestment mechanism |
| CN112627592A (en) * | 2020-12-22 | 2021-04-09 | 天津砼天建筑工程有限公司 | Structure braced system encorbelments |
| CN115430072A (en) * | 2021-06-03 | 2022-12-06 | 贝加工业有限公司 | Drum brake falling protector |
| CN117267285A (en) * | 2023-11-21 | 2023-12-22 | 山西汤荣机械制造股份有限公司 | Brake drum convenient to heat dissipation and casting device thereof |
| CN117267285B (en) * | 2023-11-21 | 2024-02-02 | 山西汤荣机械制造股份有限公司 | Brake drum convenient to heat dissipation and casting device thereof |
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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: 20170104 Termination date: 20190809 |