CN102840255B - Brake shoe, break and engineering vehicle - Google Patents

Brake shoe, break and engineering vehicle Download PDF

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Publication number
CN102840255B
CN102840255B CN201210351482.6A CN201210351482A CN102840255B CN 102840255 B CN102840255 B CN 102840255B CN 201210351482 A CN201210351482 A CN 201210351482A CN 102840255 B CN102840255 B CN 102840255B
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China
Prior art keywords
friction plate
installing zone
break
brake shoe
hoof
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CN201210351482.6A
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CN102840255A (en
Inventor
谈智辉
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HUNAN ZHONGLIAN ZHONGKE AXLE CO Ltd
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HUNAN ZHONGLIAN ZHONGKE AXLE CO Ltd
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Publication of CN102840255A publication Critical patent/CN102840255A/en
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Abstract

The invention provides a kind of brake shoe, break and engineering vehicle.Brake shoe comprises: shoes, and shoes comprises multiple friction plate installing zone, and multiple friction plate installing zone is subject to different pressure; Multiple friction plate, multiple friction plate and multiple friction plate installing zone are arranged correspondingly, and increasing along with the pressure suffered by friction plate installing zone, the friction factor of the friction plate installed in this friction plate installing zone reduces and/or hardness reduces and/or Young's modulus increases.The each stressed different region of the brake shoe in the present invention is provided with the friction plate of different performance, thus, each region all can produce corresponding frictional force, overcome in prior art and only have high pressure district to produce larger frictional force, low pressure zone produces the shortcoming of auxiliary friction power, make break of the present invention can give full play to its Braking efficiency, extend the working life of friction plate.

Description

Brake shoe, break and engineering vehicle
Technical field
The present invention relates to vehicular field, more specifically, relate to a kind of brake shoe, break and engineering vehicle.
Background technique
Fig. 1 shows the structural representation of break of the prior art.As shown in Figure 1, automobile pneumatic braking system device of the prior art many employings S tappet roller formula structure, a break is furnished with two pieces of brake shoes, according to brake shoe whether open direction consistent with vehicle traveling direction, be respectively neck hoof 11 and from hoof 12.No matter be lead hoof 11 or from hoof 12, its shoes is all provided with two panels friction plate.The material prescription of this two panels friction plate, friction factor, hardness, Young's modulus, rates of thermal expansion are all just the same.Neck hoof 11 is connected with base by hoof pin 20 pivotly with from hoof 12.
As shown in Figure 1, neck hoof 11 is consistent with the sense of rotation of brake drum, has the effect of growth trend, contrary with the sense of rotation of brake drum from hoof 12, has the effect of negative growth trend.But the braking force provided due to each point on monoblock brake shoe is uneven, the wearing and tearing of its friction plate are asynchronous.Like this, the Braking efficiency of whole brake shoe is restricted, and the life-span of friction plate is shorter.
Summary of the invention
The present invention aims to provide a kind of brake shoe, break and engineering vehicle, uneven to solve the braking force that in prior art, on brake shoe, each point provides, the nonsynchronous problem of its friction disc wear.
For solving the problems of the technologies described above, according to a first aspect of the invention, providing a kind of brake shoe, comprising: shoes, shoes comprises multiple friction plate installing zone, and multiple friction plate installing zone is subject to different pressure; Multiple friction plate, multiple friction plate and multiple friction plate installing zone are arranged correspondingly, and increasing along with the pressure suffered by friction plate installing zone, the friction factor of the friction plate installed in this friction plate installing zone reduces and/or hardness reduces and/or Young's modulus increases.
Further, shoes is curved, the first installing zone that multiple friction plate installing zone bearing of trend comprised arcuately sets gradually, the second installing zone and the 3rd installing zone, wherein, the pressure suffered by the second installing zone is greater than the first installing zone and the pressure suffered by the 3rd installing zone.
Further, friction plate is connected with shoes by riveted joint.
According to a second aspect of the invention, provide a kind of break, comprise brake shoe, this brake shoe is above-mentioned brake shoe.
Further, break comprises the neck hoof that circumferentially arranges and from hoof, and brake shoe is neck hoof and/or from hoof.
Further, break has S tappet roller formula structure.
According to a third aspect of the present invention, provide a kind of engineering vehicle, comprise break, this break is above-mentioned break.
The each stressed different region of the brake shoe in the present invention is provided with the friction plate of different performance, thus, each region all can produce corresponding frictional force, overcome in prior art and only have high pressure district to produce larger frictional force, low pressure zone produces the shortcoming of auxiliary friction power, make break of the present invention can give full play to its Braking efficiency, extend the working life of friction plate.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 diagrammatically illustrates the structural representation of break of the prior art; And
Fig. 2 diagrammatically illustrates the structural representation of the break in the present invention.
Reference character in figure: 11, lead hoof; 12, from hoof; 20, hoof pin; 30, friction plate; A, the first installing zone; B, the second installing zone; C, the 3rd installing zone.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Please refer to Fig. 1, neck hoof 11 of the prior art, due to the same with brake drum sense of rotation, has self-servo action, from hoof 12 due to contrary with brake drum direction, has the self-servo action of " bearing ", thus leads hoof 11 and different from the friction disc wear hoof 12.And with regard to neck hoof 11, because friction plate during design is the same with brake drum gap in a circumferential direction, brake shoe is when hoof pin 20 rotates, the distance of each point on its friction plate and hoof pin 20 is different, thus the displacement produced is also different, and this just makes each point and brake drum on friction plate, and radial pressure is also different in a circumferential direction.Wherein, the displacement at brake shoe two ends is little, and its radial pressure is also little, and the frictional force of generation is also corresponding little, weares and teares more weak.The intermediate section of brake shoe due to displacement large, its radial pressure is also large, and the frictional force of generation is also corresponding wants large, wearing and tearing aggravation.Above-mentioned this phenomenon, make to lead hoof 11 and the frictional force that produces from hoof 12 upper friction plate each point and brake drum all different, the wear extent of each point is also different.
As a first aspect of the present invention, provide a kind of brake shoe.As shown in Figure 2, this brake shoe comprises: shoes, and shoes comprises multiple friction plate installing zone, and multiple friction plate installing zone is subject to different pressure (especially, this pressure is the pressure from brake drum); Multiple friction plate 30, multiple friction plate 30 is arranged correspondingly with multiple friction plate installing zone, and increasing along with the pressure suffered by friction plate installing zone, the friction factor of the friction plate 30 installed in this friction plate installing zone reduces and/or hardness reduces and/or Young's modulus increases.Preferably, friction plate 30 is connected with shoes by riveted joint.
Please refer to Fig. 2, shoes is curved, the first installing zone A that multiple friction plate installing zone bearing of trend comprised arcuately sets gradually, the second installing zone B and the 3rd installing zone C, wherein, the pressure suffered by the second installing zone B is greater than the first installing zone A and the pressure suffered by the 3rd installing zone C.
According to the working principle of break, open in process at brake shoe, second installing zone B first contacts with brake drum, the friction plate 30 of the second installing zone B be subject to higher pressure, thus can select that friction factor is moderate, hardness is lower, not easily produce the friction plate of resiliently deformable.After the second installing zone B contacts, first installing zone A also correspondingly contacts with brake drum with the friction plate 30 of the second installing zone C, now, the resiliently deformable that friction plate 30 in second installing zone B produces is enough to the first installing zone A is contacted with brake drum fully with the friction plate 30 in the 3rd installing zone C, therefore, the first installing zone A and the 3rd installing zone C can select that friction factor is higher, hardness is higher, the friction plate of easy generation resiliently deformable.Like this, although the first installing zone A and the pressure suffered by the second installing zone C lower, owing to using the higher friction plate of friction factor, also can provide enough frictional force.Visible, the present invention can make the friction plate on same brake shoe in stressed different each friction plate installing zone, all can provide corresponding frictional force, the braking force of break be played fully, the life of friction plate.
As a second aspect of the present invention, provide a kind of break, comprise brake shoe, this brake shoe is above-mentioned brake shoe.Preferably, break comprises the neck hoof 11 that circumferentially arranges and from hoof 12, and brake shoe is neck hoof 11 and/or from hoof 12.Preferably, break has S tappet roller formula structure.
As a third aspect of the present invention, provide a kind of engineering vehicle, comprise break, this break is above-mentioned break.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (7)

1. a brake shoe, is characterized in that, comprising:
Shoes, described shoes comprises multiple friction plate installing zone, and described multiple friction plate installing zone is subject to different pressure;
Multiple friction plate (30), described multiple friction plate (30) and described multiple friction plate installing zone are arranged correspondingly, and increasing along with the pressure suffered by described friction plate (30) installing zone, the friction factor of the described friction plate (30) installed in friction plate installing zone described in this reduces and/or hardness reduces and/or Young's modulus reduces.
2. brake shoe according to claim 1, it is characterized in that, described shoes is curved, described multiple friction plate installing zone comprises the first installing zone (A), the second installing zone (B) and the 3rd installing zone (C) that the bearing of trend along described arc sets gradually, wherein, the pressure suffered by described second installing zone (B) is greater than described first installing zone (A) and the pressure suffered by described 3rd installing zone (C).
3. brake shoe according to claim 1, is characterized in that, described friction plate (30) is connected with described shoes by riveted joint.
4. a break, comprises brake shoe, it is characterized in that, described brake shoe is the brake shoe according to any one of claims 1 to 3.
5. break according to claim 4, described in it is characterized in that, described break comprises the neck hoof (11) that circumferentially arranges and from hoof (12), and described brake shoe is neck hoof (11) and/or from hoof (12).
6. break according to claim 4, described in it is characterized in that, described break has S tappet roller formula structure.
7. an engineering vehicle, comprises break, it is characterized in that, described break is the break according to any one of claim 4 to 6.
CN201210351482.6A 2012-09-20 2012-09-20 Brake shoe, break and engineering vehicle Active CN102840255B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210351482.6A CN102840255B (en) 2012-09-20 2012-09-20 Brake shoe, break and engineering vehicle

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Application Number Priority Date Filing Date Title
CN201210351482.6A CN102840255B (en) 2012-09-20 2012-09-20 Brake shoe, break and engineering vehicle

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CN102840255A CN102840255A (en) 2012-12-26
CN102840255B true CN102840255B (en) 2015-09-16

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105972123A (en) * 2016-07-28 2016-09-28 肇庆高新区凯盈顺汽车设计有限公司 Drum brake
CN111425535B (en) * 2020-04-08 2021-06-04 桂林电子科技大学 Hierarchical formula drum brake

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1007804A (en) * 1963-10-11 1965-10-22 Rockwell Standard Co Improvements in or relating to internal shoe-drum brakes
CN201779195U (en) * 2010-07-12 2011-03-30 杨群英 Friction liner of brake shoe
CN201875027U (en) * 2010-10-26 2011-06-22 湖南中联重科车桥有限公司 Brake shoe and drum brake
CN202073962U (en) * 2011-06-10 2011-12-14 重庆交通大学 Split friction-disc type brake

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52112070A (en) * 1976-03-17 1977-09-20 Japanese National Railways<Jnr> Automotive brake system
JP2009299831A (en) * 2008-06-16 2009-12-24 Hitachi Automotive Systems Ltd Disc brake

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1007804A (en) * 1963-10-11 1965-10-22 Rockwell Standard Co Improvements in or relating to internal shoe-drum brakes
CN201779195U (en) * 2010-07-12 2011-03-30 杨群英 Friction liner of brake shoe
CN201875027U (en) * 2010-10-26 2011-06-22 湖南中联重科车桥有限公司 Brake shoe and drum brake
CN202073962U (en) * 2011-06-10 2011-12-14 重庆交通大学 Split friction-disc type brake

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