GB1563514A - Track brake - Google Patents
Track brake Download PDFInfo
- Publication number
- GB1563514A GB1563514A GB5102876A GB5102876A GB1563514A GB 1563514 A GB1563514 A GB 1563514A GB 5102876 A GB5102876 A GB 5102876A GB 5102876 A GB5102876 A GB 5102876A GB 1563514 A GB1563514 A GB 1563514A
- Authority
- GB
- United Kingdom
- Prior art keywords
- track brake
- nickel
- friction elements
- friction
- 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
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 18
- 239000000956 alloy Substances 0.000 claims description 17
- 229910052748 manganese Inorganic materials 0.000 claims description 14
- 239000011572 manganese Substances 0.000 claims description 14
- 229910052759 nickel Inorganic materials 0.000 claims description 13
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010941 cobalt Substances 0.000 claims description 5
- 229910017052 cobalt Inorganic materials 0.000 claims description 5
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 5
- 239000011733 molybdenum Substances 0.000 claims description 5
- 229910052758 niobium Inorganic materials 0.000 claims description 5
- 239000010955 niobium Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 claims description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 239000010936 titanium Substances 0.000 claims description 2
- 229910052719 titanium Inorganic materials 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910000623 nickel–chromium alloy Inorganic materials 0.000 claims 2
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims 1
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 239000011651 chromium Substances 0.000 description 11
- 229910052804 chromium Inorganic materials 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 7
- 239000002184 metal Substances 0.000 description 7
- 229910000640 Fe alloy Inorganic materials 0.000 description 6
- 150000002739 metals Chemical class 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/027—Compositions based on metals or inorganic oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K7/00—Railway stops fixed to permanent way; Track brakes or retarding apparatus fixed to permanent way; Sand tracks or the like
- B61K7/02—Track brakes or retarding apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/002—Combination of different friction materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Braking Arrangements (AREA)
Description
(54) TRACK BRAKE
(71) We, CASTOLIN S.A., a Swiss
Body corporate, of St. Sulpice, Switzerland, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: The present invention relates to a track brake comprising å brake bar which is to be brought into contact, under pressure, with the wheel tyres of a railway carriage, the wheel tyres being made of plain or low-alloy steel.
In any friction brake, the kinetic energy of a moving part is converted through friction into heat, the friction being determined by the thrust applied to the friction members and by their surface characteristics. The use of metal friction members is essential for fields of application involving large mechanical forces, more particularly impact and shock-line stresses.
During braking in these cases this not only leads to very severe wear but more particularly to the generation of resonant vibrations in the audible and ultrasonic range, these being exceptionally undesirable and usually representing a health hazard because of their intensity.
The track braking systems in shunting yards represent a typical example of braking devices in which these disadvantages are particularly noticeable. In these systems the speed of the wagons which run through the system is reduced by brake bars which act on both sides on the wheel tyres. Due to irregularities which occur in the slip of the friction surfaces and lead to a succession of stick-slip conditions, mechanical vibrations are rapidly built up and these are radiated by the wheels and axles to cause a deafening noise.
The present invention provides a track brake comprising a brake bar which is to be brought into contact, under pressure, with the wheel tyres of a railway carriage, the wheel tyres being made of plain or low-alloy steel, the brake bar comprising a plurality of friction elements which are arranged in succession in the brake direction and are made of metals having sliding and wear properties different from those of the steel of the wheel tyres, wherein the successive friction elements of the brake bar consist of metals with different sliding and wear properties selected from the following alloys: stainless chromium-iron alloys, stainless chromium-nickel-iron alloys, alloys based on nickel, alloys based on cobalt, and alloys based on copper.
Conventional frictional surfaces of brake devices consist of identical or very similar materials having similar sliding and wear properties. It is to be noted that, for the slip properties, the frictional coefficient, with reference to the friction pairs and any lubricant that may be present, is important as well as the characteristics under high localized pressure, the characteristics in the absence of lubricants, and the characteristics at elevated temperatures, particularly in view of temperature peaks resulting from frictional processes (migration of material and fretting corrosion of the friction surfaces).
The invention will be explained further below by reference to several embodiments.
In friction devices in which one of the friction members consists of plain or lowalloy steel wheel tyres of railway carriage wheels, the friction elements of the other friction member, the brake bar of a track brake, are constructed of alloys selected from the following kinds:
(a) stainless chromium-iron alloys containing, for instance, 12 to 17 percent by weight of chromium;
(b) stainless chromium-nickel-iron alloys, for example containing the following proportions (in percent by weight):
either 18% chromium and 8 , nickel or
23% chromium and 12 S nickel;
(c) alloys of the above-mentioned kinds with the addition of at least one of the elements manganese, molybdenum, vanadium, niobium, cobalt, tungsten, silicon and titanium, the total quantity of these elements being less than 15 percent by weight; for example:
18@, Cr,@%NI, 6% Mn, remaninder Fe @ Cr, 12 @ @% Mn, 2% Mn,
remainder @ @, @@% @@ @@@@ @% Mn 1%
8 @@@@@
@ Cr @@@ @ @@@ @@ @@ Si, remainder Fe @ alloys @@td @@ nickel, where
particularly
5 to 20% Cr, 80 to 85% Ni
15 to 20% Cr, @@@@ Mb, remainder Ni
15 to 25% Cr, @ @%Mb, 5 to 10% Mn, @ to 10% Fe remainder Ni
@ to 20% Cr, 10 to 20% Mo @ to 6% V. np @ @ Fe remainder Ni @ Cr 3% Si, @% B, up to @% Fe, remainder Ni;
e) alloys based on cobalt, more
particularly
15 to 20% Cr, 5 to 10% Mo, 1 to 3%Si,@p to 5% Ni, up to 3% Fe, remainder Co;
f) alloys based on copper, more
particularly
8% Sn, remainder Cu
8 Al, remainder Cu
8% Al, 5% Ni, remainder Cu
8 Al, 12% Mn, remainder Cu
10% A 2% Fe 2% Co, remainder Cu.
To @ ee @oise with a maximum @icienr@, it has been found useful in some
case to construct succesive friction @@ems alternately of the alloy 8% Ak, 12%
Mn, remainder Cu and of a nickel-based
nickel chrome alloyl. Other combinations of @@@@ can also be used. For example. friction elements @ stainles feritic @@@@ @ chromium-nickel steel with the
addition of up to 10 percent by weight of
molybdenum and/or, manganese and/or silicon may alternate with friction elements
of either a nickel-based nickel-chrome alloy
with the addition of up to 10 percent by
weight of manganese and niobium and/or
molybdenum and/or up to 10 percent by weight of iron, or a cobalt-based alloy.
More particularly, the two following alloys can be used:
25% Cr, 11% Ni, 1% Mo, 1% Si, 1% Mn,
remainder Fe alternating with
18% Cr, 6% Mn, 5% Fe, 2% Nb,
remainder Ni,
The number of different kinds of metals
used successively can be not only equal to two but also to three, four, or even more.
The friction elements may advantageously be attached by welding to a metal carrier. Friction elements of the above-mentioned alloys may thus be welded on a steel carrier by means of manual welding electrodes, by continuous wire welding with inert or active gas, where appropriate by means of a filler wire. The friction elements can however also be produced by powder facing welding and by the use of the plasm process or similar welding
tehniques wich lead to metallurgier@ bonding of the friction elements to the
carrier.
Disk bars can ha@ lengh @ C @
meters, and it is advantageous to apl friction elements of 5 to 50 cm in ionz@@@ inte. @als of 1 to 5 cm in tire longituding direction. Instead of the above-mendene@ velding method, it is of course possible to use other conventional methods of mounting such as scrow fasteners or @@e@.
The shape of the friction surfaces of the friction elements can also be selected @ @@ special requiremets. For example rhomboidal shape can be used for these surfaces or a rectangular or square shape.
It has been found that the above
described arrangements and embodiments of the friction elements leads to a track brake in which noise during the braking operation is practically entirely prevented, a feature accompanied by low wear and therefore by a substantial increase in service life.
WHAT WECLAIM IS:
1. A track brake comprising a brake bar
which is to be brought into contact, under pressure, with the wheel tyres of a railway carriage, the wheel tyres being made of plain or low-alloy steel, the brake bar comprising a plurality of friction elements which are arranged in succession in the braking directiin and are made of metals having sliding and wear properties different from those of the steel of the wheel tyres
wherein the successive friction elements of the brake bar consist of metals with different sliding and wear properties selected from the following alloys: stainless chromium-iron alloys, stainless chromiumnickel-iron alloys, alloys based on nickel alloys based on cobalt, and alloys based on copper.
Claims (1)
- 2. A track brake as claimed in claim 1, in which the said stainless chromium-iron or chromium-nickel-iron alloy contains as an addition at least one of the elements manganese, molybdenum, vanadium, niobium, cobalt, tungsten, silicon, and titanium, the total quatity of the said elements amounting to less than 15 percent by weight of the alloy.3. A track brake as claimed in claim 1, in which friction elements consisting of stainless ferritic-austenitic chromium-nickel steel containing up to 10 percent by weight of mollibdenum and/or manganese and/or silicon alternate with friction elements consisting of a nickel-based nickelchromium alloy containig up to 10 percent by weight of manganese and/or niobium and/or molybdenum and/or up to 10 percent by weight of iron.4. A track brake as claimed in claim 1, in which friction elements consisting of an alloy having the composition: 8 wt % Al 12 wt% Mn. remainder Cu alternate with friction element consisting of a nickel based nickel-chromium alloy.5. A track brake as claimed in any preceding claim, in which the length of the friction elements in the braking direction amounts to 0.25 to 5% of the length of the brake bar6. A track brake as claimed in claim 5 in which succesive friction elements in the braking direction are spaced apart by a distance which is less than their length in the same direction @. A track brake as claimed in claim 5 or @ @ which @@ fr ction elements are @ m @id@.@ A track brake as claimed in any preceding claims in which the friction elements are formed on a @rier by welding.9. A track brake as claimed in claim 1, substantially as described herein.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1590775A CH606857A5 (en) | 1975-12-08 | 1975-12-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1563514A true GB1563514A (en) | 1980-03-26 |
Family
ID=4412931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB5102876A Expired GB1563514A (en) | 1975-12-08 | 1976-12-07 | Track brake |
Country Status (9)
| Country | Link |
|---|---|
| AT (1) | AT383554B (en) |
| BE (1) | BE849127A (en) |
| CH (1) | CH606857A5 (en) |
| DE (1) | DE2655695C2 (en) |
| ES (1) | ES454049A1 (en) |
| FR (1) | FR2334887A1 (en) |
| GB (1) | GB1563514A (en) |
| IT (1) | IT1072129B (en) |
| NL (1) | NL185236C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148424A (en) * | 1983-08-20 | 1985-05-30 | Tokico Ltd | Friction pad and its manufacture |
| GB2287451B (en) * | 1994-03-16 | 1998-03-04 | Hitachi Ltd | Emergency stop apparatus for elevator |
| WO2024103093A1 (en) * | 2022-11-16 | 2024-05-23 | Hascic Daniel | Brake element |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4278153A (en) * | 1978-11-24 | 1981-07-14 | Goodyear Aerospace Corporation | Brake friction material with reinforcement material |
| DE3209162A1 (en) * | 1982-03-13 | 1983-09-15 | Fa. Andreas Stihl, 7050 Waiblingen | BRAKE DEVICE |
| CN107914733B (en) * | 2017-11-11 | 2024-05-10 | 华强方特（芜湖）文化科技有限公司 | Treatment and maintenance method for universal hinged accumulated and cut nubs of railway vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7344474U (en) * | 1974-05-30 | Thyssen Huette A Ag | Brake bar for bar track brakes | |
| GB568409A (en) * | 1944-03-01 | 1945-04-04 | Self Changing Gear Company Ltd | Improvements in and relating to electro-magnetic clutches or brakes |
| FR1132609A (en) * | 1955-07-06 | 1957-03-13 | Ferodo Sa | Friction disc |
| US2999564A (en) * | 1959-08-26 | 1961-09-12 | American Brake Shoe Co | Friction couples |
| FR1533096A (en) * | 1966-08-04 | 1968-07-12 | Ferodo Sa | Railroad brake block |
| DE6908833U (en) * | 1969-03-05 | 1969-11-27 | Thyssen Huette Ag | BRAKE BAR FOR BAR TRACK BRAKES |
| US3791493A (en) * | 1970-12-05 | 1974-02-12 | Nippon Carbon Co Ltd | Friction elements for braking rotary bodies |
-
1975
- 1975-12-08 CH CH1590775A patent/CH606857A5/xx not_active IP Right Cessation
-
1976
- 1976-12-03 IT IT6990376A patent/IT1072129B/en active
- 1976-12-07 AT AT906676A patent/AT383554B/en not_active IP Right Cessation
- 1976-12-07 BE BE173018A patent/BE849127A/en not_active IP Right Cessation
- 1976-12-07 GB GB5102876A patent/GB1563514A/en not_active Expired
- 1976-12-07 ES ES454049A patent/ES454049A1/en not_active Expired
- 1976-12-08 FR FR7637012A patent/FR2334887A1/en active Granted
- 1976-12-08 NL NL7613667A patent/NL185236C/en not_active IP Right Cessation
- 1976-12-08 DE DE19762655695 patent/DE2655695C2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2148424A (en) * | 1983-08-20 | 1985-05-30 | Tokico Ltd | Friction pad and its manufacture |
| GB2287451B (en) * | 1994-03-16 | 1998-03-04 | Hitachi Ltd | Emergency stop apparatus for elevator |
| WO2024103093A1 (en) * | 2022-11-16 | 2024-05-23 | Hascic Daniel | Brake element |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2655695C2 (en) | 1986-04-03 |
| DE2655695A1 (en) | 1977-06-16 |
| FR2334887A1 (en) | 1977-07-08 |
| NL185236C (en) | 1990-02-16 |
| CH606857A5 (en) | 1978-11-15 |
| BE849127A (en) | 1977-04-01 |
| AT383554B (en) | 1987-07-27 |
| ATA906676A (en) | 1986-12-15 |
| ES454049A1 (en) | 1977-11-16 |
| NL185236B (en) | 1989-09-18 |
| FR2334887B1 (en) | 1982-11-05 |
| NL7613667A (en) | 1977-06-10 |
| IT1072129B (en) | 1985-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19921207 |