CN1095049C - Brake shoe capable of improving tread - Google Patents
Brake shoe capable of improving tread Download PDFInfo
- Publication number
- CN1095049C CN1095049C CN99118454A CN99118454A CN1095049C CN 1095049 C CN1095049 C CN 1095049C CN 99118454 A CN99118454 A CN 99118454A CN 99118454 A CN99118454 A CN 99118454A CN 1095049 C CN1095049 C CN 1095049C
- Authority
- CN
- China
- Prior art keywords
- brake shoe
- wheel face
- inserting member
- discontinuous
- 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
- 239000000463 material Substances 0.000 claims abstract description 41
- 239000003082 abrasive agent Substances 0.000 claims description 9
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical group S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 9
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 9
- 229910001018 Cast iron Inorganic materials 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 239000002783 friction material Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000009828 non-uniform distribution Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Braking Arrangements (AREA)
Abstract
The present invention a braking shoe suitable for being engaged with the wheel face of a track vehicle. The track vehicle can be supported on a track by the wheel face in a guide mode. The brake shoe comprises a back plate and a brake pad fixed on the back plate, wherein the brake pad is provided with a brake face which can be engaged with the wheel face. The brake shoe further comprises a first part and a second part, wherein the first part and the second part are positioned on both opposite sides of the midpoint of a key bridge connector of the back plate, a first material forms the first part and the second part, and a second material with a different abrasion speed with the first material is used as at least one discontinuous inserting piece to be positioned in the first material. The second material improves the wheel face pf the track vehicle, and thereby, a function to adhesive force between the wheel face and the tract is performed.
Description
The present invention relates to the brake shoe that track vehicle is used, particularly a kind of improved track vehicle brake shoe, it can change the adhesion between track vehicle wheel and the confession track of vehicle track running.
In history, railway locomotive and track vehicle are braked by wheel face.The engagement of brake shoe and wheel face produces friction, and consumes the kinetic energy of vehicle with form of heat.In order to make this braking effective, need wheel turns.When wheel is braked, the adhesion that produces because of friction between wheel face and the track will be kept this wheel turns.
Excessive wheel wearing and tearing and brake shoe can periodically frequently take place when having found in the winter time to be changed.A kind of explanation to this kind phenomenon is, is owing to make brake shoe produce significantly cleaning effect on wheel because the large quantity of moisture in winter contacts to small part.This cleaning effect trends towards increasing contact friction or the adhesion between wheel and the track, on wheel, produce the contact stress that increases, in the guiding and steering operation process of wheel set, particularly when running into the curved in tracks part, this contact stress will be high especially.
Produce and the braking force of combination is transformed into the contact stress of heat and wheel by the adhesion between the friction between brake shoe and the wheel surface and wheel and the track, and this usually makes wheel suffer damage.Know that high heat and contact stress can produce and peel off, thereby wheel face was slightly lost efficacy.
Another relevant issues that the track that need highly slow down is run into are slips of wheel, and this will cause the position, plane on wheel face.Position, this plane is owing to the height vibration and the noise of its generation are unfavorable for equipment, goods and passenger.Repair this impaired wheel and need unload wheel and wheel face is carried out machining, so that eliminate the position, plane.
The invention provides a kind of brake shoe that is fit to the wheel face engagement of track vehicle, track vehicle can support in orbit by this wheel face with being directed, improving this vehicle wheel, thereby the adhesion between this wheel face and the track is worked.This brake shoe comprises a back plate and is fixed on brake pad on this back plate.This brake pad have can with the braking surface of wheel face engagement, and further comprise first and second parts on the two opposite sides of the key bridge member mid point that places the back plate.A kind of first material this track vehicle wheel, that become to be grouped into by rubbing that is suitable for braking is arranged.First material forms first and second parts, and is different from second material of first material in addition.Second material places first material as at least one discontinuous inserting member, and this second material has improved the wheel face of track vehicle, thereby the adhesion between above-mentioned wheel face and the track is worked.Second material has the rate of wear that is different from first material.
Therefore, a main purpose of the present invention provides a kind of friction catch boots, and it can change the adhesion between track vehicle wheel and the track and can not influence brake operating.
Another object of the present invention is to add performance improving agent in the brake shoe friction material, to reduce the adhesion between wheel and the track.
A further object of the present invention is to add performance improving agent in the brake shoe friction material, to increase the adhesion between wheel and the track.
Another purpose of the present invention is the usage ratio of control brake boots performance improving agent relative orbit wheel face.
Except the of the present invention many purposes and advantage that particularly point out above, should be understood that, for the technician who is familiar with relevant railway brake technology, from following detailed description of the present invention, special when this detailed description is combined with accompanying drawing and appended claims, can more clearly understand many other important purpose and advantages of improved combination brake shoe.
Fig. 1 is a planimetric map, and it has shown the braking surface according to the brake slipper of one embodiment of the invention;
Fig. 2 is the sectional view along the 2-2 line among Fig. 1;
Fig. 3 is a planimetric map, and it has shown the braking surface according to the brake slipper of another embodiment of the present invention;
Fig. 4 is the sectional view along the 4-4 line among Fig. 3.
Before describing various embodiments of the present invention in detail, should illustrate that in order to be well understood to the present invention, the identical parts with identical function in the accompanying drawing in all views is represented with identical label.
Referring now to Fig. 1 and 2.They have shown a brake shoe 10, and this brake shoe comprises the back plate 12 with key bridge member 14, so as to utilize traditional device, such as brake shoe key (not shown) with brake shoe 10 be fixed on the braking (not shown) on.After being fixed on the plate 12 is molded brake slipper 16, and it is preferably cut apart, so that disconnected from each other along the center line of brake shoe bridge member.Molded brake slipper 16 is made by synthetic friction material, and is already used the sort of such as railway type brake shoe.This molded brake slipper 16 preferably when molded this friction catch piece 16 by being bonded and fixed on the plate 12 of back.
Be formed with groove 20 on each brake slipper 16, this groove is preferably cylindrical.This groove 20 can be used to admit one with the roughly the same inserting member 22 of groove 20 shapes.Inserting member 22 is to make with the material that is different from the synthetic friction material of making brake slipper 16.In one embodiment of the present of invention, this inserting member 22 is by the lubricator of making such as molybdenum disulfide.Though molybdenum disulfide is a kind of preferable lubricator at present, also can use other lubricator within the scope of the invention.
Because molybdenum disulfide is Powdered usually, it is contemplated that therefore this lubricator is combined with suitable resin and is hardened into the inserting member 22 corresponding with groove 20 shapes.Preferably, inserting member is formed by 95% molybdenum disulfide and 5% resin combination.According to one aspect of the present invention, inserting member 22 can combine with the synthetic friction material of brake slipper 16 in above-mentioned molding process, and like this, groove 20 can form according to the shape of inserting member 22, and makes inserting member be fixed on 20 li of grooves thus.According to another aspect of the present invention, inserting member 22 can be fixed for 20 li by being pressed into molded groove.Also available other method is fixed on 20 li of grooves with inserting member 22.
In addition, lubricator being combined to other method of going in the synthetic friction material of brake slipper 16 comprises, before molded, pulverous lubricator is mixed with synthetic friction material, like this, can realize substantially that in the process of molded brake slipper 16 molybdenum disulfide mixes with the even of synthetic friction material.Another kind method comprises makes bead with molybdenum disulfide, and before being molded as brake slipper 16 this bead is dispersed in the synthetic friction material, like this, when molding process is finished, realizes lubriation material non-uniform Distribution significantly.
Yet in all cases, the rate of wear of lubriation material is greater than the rate of wear of synthetic friction material, and like this, the latter has controlled the usage ratio of the lubriation material of relative wheel face.In addition, all surfaces of the inserting member 22 of this lubricated usefulness is long-pending general in 5% to 15% scope of brake slipper 16 surface areas.This scope is selected according to their rates of wear separately, like this, when brake shoe 10 contacts with the wheel face of track vehicle wheel, forms the lubricator of film shape on wheel face.After required lubricator film was provided in this way, the friction level between wheel face and the track can reduce significantly, thereby allowed to exist part to slide situation, particularly at the curved in tracks place, reduced the wheel/rail contact stress with this.By the usage ratio of control lubricator, the wheel stress that can obtain to reduce, but still provide this braking force of supporting needed wheel/rail adhesion level simultaneously, and this braking force is that the required decelerating effect of acquisition is necessary.
Referring now to Fig. 3 and 4,, they have shown a kind of brake shoe 10, and this brake shoe 10 has back plate 12, one key bridge members 14 and a molded synthetic friction catch piece 16.
Be formed with groove 21 on each brake slipper 16, this groove is rectangle preferably.This groove 21 can be used to admit one with the roughly the same inserting member 23 of groove 21 shapes.Inserting member 23 is to make with the material that is different from the synthetic friction material of making brake slipper 16.In this embodiment of the present invention, this inserting member 23 comprises the abrasive material such as cast iron.Though cast iron is a preferable example, it is an example, also can use other suitable abrasive material within the scope of the invention certainly.
Shown in Fig. 3 and 4, according to one aspect of the present invention, inserting member 23 (preferably cast iron) can combine with brake slipper 16 in the process of molded synthetic friction catch piece 16, like this, groove 21 can form according to the shape of inserting member 23, and thus inserting member is fixed therein.
In addition, abrasive material is combined to other method of going in the synthetic friction catch piece 16 comprises, suitable abrasive material is evenly distributed and make that abrasive material and synthetic friction material are non-homogeneous to be mixed.
In all cases, have nothing to do with using any abrasive material, the rate of wear of abrasive material is greater than the rate of wear of synthetic friction material.Rectangle inserting member 23 is laterally crossed over the major part of brake slipper 16 width, and like this, corresponding with the engagement of wheel face with brake slipper in the braking process 16, wheel face is worn.Have been found that cast iron can make the wheel face wearing and tearing be in desirable minor levels satisfactorily.In order to obtain desirable wheel surface wear, the surface area of this inserting member that abrasive material is made preferably accounts for 5% to 25% of brake slipper surface area.To realize and keep the adhesion of optimum level to this improvement of using continuous braking wheel face, prevent the rolling contact separation between wheel and the track.Like this, not only kept wheel turns, thereby guaranteed by can obtaining the decelerating effect of vehicle to the braking of wheel face, and this wheel turns has reduced the chance that produces the slip plane position on wheel face.
According to above-mentioned two aspects of the present invention, such wheel face improves the wheel life-span that remarkable increase will be provided, the maintenance expenses of reduction, and to track vehicle equipment, goods and passenger's very little vibration environment, and very low noise.
Though describe preferable and the embodiment who replaces of the present invention above in detail, but should be understood that, for being familiar with braking system, particularly being familiar with the synthetic friction catch boots those skilled in the art that rail vehicle uses, under the situation that does not exceed design of the present invention or appended claims scope, also can make many other variation and/or improvement to the present invention.
Claims (15)
1. brake shoe, its is fit to wheel face engagement with track vehicle, and by this wheel face, track vehicle can support in orbit with being directed, and described brake shoe comprises:
(1) one back plate; And
(2) be fixed on brake pad on the plate of described back, it have can with the braking surface of described wheel face engagement, described brake pad comprises:
1) places first and second parts on the two opposite sides of key bridge member mid point of described back plate;
2) be suitable for braking first material described track vehicle wheel, that become to be grouped into by rubbing, described first material is formed at described first and second parts, and at least one groove on the described braking surface that is formed at described first material is arranged; And
3) be different from second material of described first material, described second material places in described first material as at least one discontinuous inserting member, described second material improves described track vehicle wheel face, thereby influence the adhesion between described wheel face and the described track, described second material also has the rate of wear that is different from described first material.
2. brake shoe as claimed in claim 1 is characterized in that, described second material is a lubricator, and described track vehicle wheel face is enhanced, thereby reduces the adhesion between described wheel face and the described track.
3. brake shoe as claimed in claim 2 is characterized in that described lubricator is a molybdenum disulfide.
4. brake shoe as claimed in claim 1 is characterized in that, described second material is a kind of abrasive material, and described track vehicle wheel face is enhanced, thereby increases the adhesion between described wheel face and the described track.
5. brake shoe as claimed in claim 1 is characterized in that, described second material is the mixture that the hardening of resin by about 95% molybdenum disulfide and about 5% forms.
6. brake shoe as claimed in claim 5 is characterized in that, the described mixture that solidifies is corresponding with the shape of described at least one groove.
7. brake shoe as claimed in claim 1 is characterized in that, described at least one the discontinuous inserting member in described first material is cylindrical.
8. brake shoe as claimed in claim 7 is characterized in that, the gross area of described at least one the discontinuous inserting member in described first material the described braking surface gross area about 5% to 15% between scope in.
9. brake shoe as claimed in claim 7 is characterized in that, described columniform described at least one discontinuous inserting member is a molybdenum disulfide.
10. brake shoe as claimed in claim 1 is characterized in that, described at least one the discontinuous inserting member in described first material is rectangular.
11. brake shoe as claimed in claim 10 is characterized in that, the gross area of described at least one the discontinuous inserting member in described first material the described braking surface gross area about 5% to 25% between scope in.
12. brake shoe as claimed in claim 10 is characterized in that, described at least one discontinuous inserting member of described rectangle is a cast iron.
13. brake shoe as claimed in claim 1, it is characterized in that, described at least one discontinuous inserting member in described first material is prefabricated, and described at least one groove of described first material has the shape consistent with inserting member, thereby stationary fit is provided between them.
14. brake shoe as claimed in claim 1 is characterized in that, described at least one the discontinuous inserting member in described first material has two.
15. brake shoe as claimed in claim 14 is characterized in that, first inserting member in described two inserting members inserts in the described first portion of described first material, and second inserting member inserts in the described second portion of described first material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99118454A CN1095049C (en) | 1999-08-27 | 1999-08-27 | Brake shoe capable of improving tread |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99118454A CN1095049C (en) | 1999-08-27 | 1999-08-27 | Brake shoe capable of improving tread |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1286189A CN1286189A (en) | 2001-03-07 |
| CN1095049C true CN1095049C (en) | 2002-11-27 |
Family
ID=5280465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99118454A Expired - Fee Related CN1095049C (en) | 1999-08-27 | 1999-08-27 | Brake shoe capable of improving tread |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1095049C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101900176B (en) * | 2010-07-02 | 2012-09-26 | 北京瑞斯福科技有限公司 | Novel mosaic composition brake shoe and manufacturing method thereof |
| CN102155505B (en) * | 2011-04-12 | 2013-06-05 | 中国铁道科学研究院金属及化学研究所 | Brake plate of train speed reducer and manufacturing method thereof |
| CN109501831B (en) * | 2018-12-07 | 2024-04-26 | 中国铁道科学研究院集团有限公司 | Brake caliper track change device |
| CN113924427A (en) * | 2019-06-11 | 2022-01-11 | Rfpc控股公司 | Friction device with reduced volume |
| USD988215S1 (en) | 2021-03-19 | 2023-06-06 | Westinghouse Air Brake Technologies Corporation | Brake shoe with conditioning inserts |
| EP4060201A1 (en) | 2021-03-19 | 2022-09-21 | Westinghouse Air Brake Technologies Corporation | Brake systems having back plates with projecting inserts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5341904A (en) * | 1991-07-02 | 1994-08-30 | Amsted Industries Incorporated | Railroad brake shoe |
| JPH09118230A (en) * | 1995-10-26 | 1997-05-06 | East Japan Railway Co | Railroad vehicle tread brake attachment mechanism |
| US5657839A (en) * | 1993-02-01 | 1997-08-19 | Westinghouse Air Brake Company | Railway brake shoe |
| US5788027A (en) * | 1997-06-06 | 1998-08-04 | Westinghouse Air Brake Company | Trim shoe |
-
1999
- 1999-08-27 CN CN99118454A patent/CN1095049C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5341904A (en) * | 1991-07-02 | 1994-08-30 | Amsted Industries Incorporated | Railroad brake shoe |
| US5657839A (en) * | 1993-02-01 | 1997-08-19 | Westinghouse Air Brake Company | Railway brake shoe |
| JPH09118230A (en) * | 1995-10-26 | 1997-05-06 | East Japan Railway Co | Railroad vehicle tread brake attachment mechanism |
| US5788027A (en) * | 1997-06-06 | 1998-08-04 | Westinghouse Air Brake Company | Trim shoe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1286189A (en) | 2001-03-07 |
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| C14 | Grant of patent or utility model | ||
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