CN102840255A - Brake shoe, arrester and engineering vehicle - Google Patents

Brake shoe, arrester and engineering vehicle Download PDF

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Publication number
CN102840255A
CN102840255A CN2012103514826A CN201210351482A CN102840255A CN 102840255 A CN102840255 A CN 102840255A CN 2012103514826 A CN2012103514826 A CN 2012103514826A CN 201210351482 A CN201210351482 A CN 201210351482A CN 102840255 A CN102840255 A CN 102840255A
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CN
China
Prior art keywords
friction
brake shoe
friction plate
break
installing zone
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Application number
CN2012103514826A
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Chinese (zh)
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CN102840255B (en
Inventor
谈智辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUNAN ZHONGLIAN ZHONGKE AXLE CO Ltd
Hunan Zoomlion Special Vehicle Co Ltd
Original Assignee
HUNAN ZHONGLIAN ZHONGKE AXLE CO Ltd
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Application filed by HUNAN ZHONGLIAN ZHONGKE AXLE CO Ltd filed Critical HUNAN ZHONGLIAN ZHONGKE AXLE CO Ltd
Priority to CN201210351482.6A priority Critical patent/CN102840255B/en
Publication of CN102840255A publication Critical patent/CN102840255A/en
Application granted granted Critical
Publication of CN102840255B publication Critical patent/CN102840255B/en
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Abstract

The invention provides a brake shoe, an arrester and an engineering vehicle. The brake shoe comprises a horseshoe and a plurality of friction discs, wherein the horseshoe comprises a plurality of friction disc installation regions, and the a plurality of friction disc installation regions are subjected to different pressures; a plurality of friction discs and a plurality of friction disc installation regions are arranged in a one-to-one correspondence manner, and along with the increase of the pressure to which the friction disc installation regions are subjected, the friction factors of the friction discs arranged in the friction disc installation regions are reduced, and/or the hardness is lowered, and/or the elastic modulus is increased. The brake shoe provided by the invention has the advantages that the friction discs with different properties are arranged on different regions with stress, each region can generate corresponding friction force, and the disadvantages that the greater friction force generated by a high pressure region in the prior art is overcome; and the auxiliary friction force generated by a low pressure region is overcome, the arrester can fully display the brake efficiency, and the service life of the friction discs is prolonged.

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 pressure break of the prior art adopts S tappet roller formula structure more, on a break, is furnished with two 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 to lead hoof 11 or, two friction plates are installed all on its shoes from hoof 12.The material prescription of these two friction plates, friction factor, hardness, Young's modulus, rates of thermal expansion are all just the same.Lead hoof 11 and be connected pivotly with base through hoof pin 20 from hoof 12.
As shown in Figure 1, neck hoof 11 is consistent with the sense of rotation of brake drum, and the effect with growth trend is opposite with the sense of rotation of brake drum from hoof 12, the effect with negative growth trend.Yet because the braking force that each point provides on the monoblock brake shoe is inhomogeneous, the wearing and tearing of its friction plate are asynchronous.Like this, make the Braking efficiency of whole brake shoe be 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, and is inhomogeneous to solve the braking force that each point provides on the brake shoe in the existing technology, 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, a kind of brake shoe is provided, comprising: shoes, shoes comprise a plurality of friction plate installing zones, a plurality of friction plate installing zones receive different pressure; A plurality of friction plates; A plurality of friction plates and a plurality of friction plate installing zone are provided with correspondingly; And along with increasing of the suffered pressure of friction plate installing zone, the friction factor of the friction plate of installing in this friction plate installing zone reduces and/or hardness reduces and/or Young's modulus increases.
Further; Shoes is curved; A plurality of friction plate installing zones comprise first installing zone, second installing zone and the 3rd installing zone that sets gradually along the bearing of trend of arc, and wherein, the suffered pressure of second installing zone is greater than first installing zone and the suffered pressure of the 3rd installing zone.
Further, friction plate is connected with shoes through riveted joint.
According to a second aspect of the invention, a kind of break is provided, has comprised brake shoe, this brake shoe is above-mentioned brake shoe.
Further, break comprises along the neck hoof that circumferentially is provided with from hoof, and brake shoe is a neck hoof and/or from hoof.
Further, break has S tappet roller formula structure.
According to a third aspect of the present invention, a kind of engineering vehicle is provided, has comprised break, this break is above-mentioned break.
The stressed different zone of each of brake shoe among the present invention is equipped with the friction plate of different performance; Thereby; Each zone all can produce corresponding frictional force, has overcome to have only the high pressure district to produce big frictional force in the existing technology, and low pressure zone produces the shortcoming of auxiliary frictional force; Make break of the present invention can give full play to its Braking efficiency, prolonged the working life of friction plate.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 has schematically shown the structural representation of break of the prior art; And
Fig. 2 has schematically shown the structural representation of the break among the present invention.
Reference character among the figure: 11, neck hoof; 12, from hoof; 20, hoof pin; 30, friction plate; A, first installing zone; B, second installing zone; C, the 3rd installing zone.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, 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 of the prior art 11 has self-servo action because the same with the brake drum sense of rotation, because in the opposite direction with brake drum, has the self-servo action of " bear " from hoof 12, thereby leads hoof 11 and the friction disc wear from hoof 12 different.And with regard to neck hoof 11; Because friction plate is the same with brake drum gap in a circumferential direction during design; When brake shoe rotates around hoof pin 20; The distance of each point on its friction plate and hoof pin 20 is different, thereby the displacement that produces is also different, and this just makes on the friction plate each point and brake drum, 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, a little less than the wearing and tearing.The intermediate section of brake shoe is because displacement is big, and its radial pressure is also big, and the frictional force of generation is also corresponding wants big, the wearing and tearing aggravation.Above-mentioned this phenomenon makes and leads hoof 11 and all different from the frictional force of hoof 12 upper friction plate each points and brake drum generation that the wear extent of each point is also different.
As first aspect of the present invention, a kind of brake shoe is provided.As shown in Figure 2, this brake shoe comprises: shoes, shoes comprise a plurality of friction plate installing zones, and a plurality of friction plate installing zones receive different pressure (especially, this pressure is the pressure from brake drum); A plurality of friction plates 30; A plurality of friction plates 30 are provided with a plurality of friction plate installing zones correspondingly; And along with increasing of the suffered pressure of friction plate installing zone, the friction factor of the friction plate of installing in this friction plate installing zone 30 reduces and/or hardness reduces and/or Young's modulus increases.Preferably, friction plate 30 is connected with shoes through riveted joint.
Please refer to Fig. 2; Shoes is curved; A plurality of friction plate installing zones comprise the first installing zone A, the second installing zone B and the 3rd installing zone C that sets gradually along the bearing of trend of arc, and wherein, the suffered pressure of the second installing zone B is greater than the first installing zone A and the suffered pressure of the 3rd installing zone C.
Working principle according to break; Open in the process at brake shoe; The second installing zone B and brake drum contacts earlier, the friction plate 30 of the second installing zone B receive higher pressure, thereby can select that friction factor is moderate, hardness is lower, be prone to the friction plate of generation resiliently deformable.After second installing zone B contact; The friction plate 30 of the first installing zone A and the second installing zone C also correspondingly contacts with brake drum; At this moment; The resiliently deformable that friction plate 30 in the second installing zone B produces is enough to make the first installing zone A contact with brake drum fully with friction plate 30 in the 3rd installing zone C, and therefore, the first installing zone A and the 3rd installing zone C can select that friction factor is higher, hardness is higher, be difficult for the friction plate of generation resiliently deformable.Like this, though the suffered pressure of the first installing zone A and the second installing zone C is lower,, also enough frictional force can be provided owing to use friction factor higher friction sheet.It is thus clear that the present invention can make the stressed different interior friction plate of each friction plate installing zone on the same brake shoe, all corresponding frictional force can be provided, and the braking force of break is brought into play fully, the life-span of friction plate prolongs.
As second aspect of the present invention, a kind of break is provided, comprise brake shoe, this brake shoe is above-mentioned brake shoe.Preferably, break comprises along the neck hoof 11 that circumferentially is provided with from hoof 12, and brake shoe is a neck hoof 11 and/or from hoof 12.Preferably, break has S tappet roller formula structure.
As the third aspect of the invention, a kind of engineering vehicle is provided, comprise break, this break is above-mentioned break.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to 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, said shoes comprise a plurality of friction plate installing zones, and said a plurality of friction plate installing zones receive different pressure;
A plurality of friction plates (30); Said a plurality of friction plate (30) is provided with said a plurality of friction plate installing zones correspondingly; And along with increasing of the suffered pressure of said friction plate (30) installing zone, the friction factor of the said friction plate of installing in this said friction plate installing zone (30) reduces and/or hardness reduces and/or Young's modulus increases.
2. brake shoe according to claim 1; It is characterized in that; Said shoes is curved; Said a plurality of friction plate installing zone comprises first installing zone (A), second installing zone (B) and the 3rd installing zone (C) that the bearing of trend along said arc sets gradually, and wherein, the suffered pressure of said second installing zone (B) is greater than said first installing zone (A) and the suffered pressure of said the 3rd installing zone (C).
3. brake shoe according to claim 1 is characterized in that, said friction plate (30) is connected with said shoes through riveted joint.
4. a break comprises brake shoe, it is characterized in that, said brake shoe is each described brake shoe in the claim 1 to 3.
5. break according to claim 4, said it is characterized in that, said break comprises along the neck hoof (11) that circumferentially is provided with from hoof (12), said brake shoe is a neck hoof (11) and/or from hoof (12).
6. break according to claim 4, said it is characterized in that, said break has S tappet roller formula structure.
7. an engineering vehicle comprises break, it is characterized in that, said break is each described break in the 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

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

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Cited By (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
CN111425535A (en) * 2020-04-08 2020-07-17 桂林电子科技大学 Hierarchical formula drum brake

Citations (6)

* 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
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
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

Patent Citations (6)

* 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
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
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

Cited By (3)

* 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
CN111425535A (en) * 2020-04-08 2020-07-17 桂林电子科技大学 Hierarchical formula drum brake
CN111425535B (en) * 2020-04-08 2021-06-04 桂林电子科技大学 Hierarchical formula drum brake

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