GB869070A - Improvements in braking systems - Google Patents
Improvements in braking systemsInfo
- Publication number
- GB869070A GB869070A GB3282256A GB3282256A GB869070A GB 869070 A GB869070 A GB 869070A GB 3282256 A GB3282256 A GB 3282256A GB 3282256 A GB3282256 A GB 3282256A GB 869070 A GB869070 A GB 869070A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rail
- shoe
- pivot
- vehicle
- rod
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H7/00—Brakes with braking members co-operating with the track
- B61H7/02—Scotch blocks, skids, or like track-engaging shoes
- B61H7/04—Scotch blocks, skids, or like track-engaging shoes attached to railway vehicles
- B61H7/06—Skids
- B61H7/08—Skids electromagnetically operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/321—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration deceleration
- B60T8/3235—Systems specially adapted for rail vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Braking Arrangements (AREA)
Abstract
869,070. Railway vehicle brakes. DUNLOP RUBBER CO. Ltd. Oct. 21, 1957 [Oct. 27, 1956], No. 32822/56. Class 103 (1). In a braking system for railway vehicles the degree of application of the main brake is subjected to the variation in the amount of friction existing between the rail and a skid-shoe so as to prevent locking of the main brake under all load, speed and rail-wheel adhesion conditions. In the embodiment disclosed, assuming the vehicle to be travelling to the left, as shown in the drawing, when vacuum cylinder 12 is actuated to apply the vehicle brakes, the piston therein moves upwardly and piston-rod 11, bell-crank 1, rod 3, bellcrank 6 are actuated to cause roller 16 to press on arcuate surface 17 of the vertical member 18 carrying a cast-iron shoe 27 and force the latter into frictional engagement with rail 28 against the force of spring 23. This frictional engagement will cause the member 18 to pivot in a counter-clockwise direction about a pivot 20 to move the arm 30 to the left, causing the lever 31 to pivot in the same direction about its pivot 32 and pull the rod 48 to pull pincer arms 37, 38 together to press the frictionpads 43 against the opposite radial faces of the disc 35 with a force which is directly proportional to the coefficient of friction existing between the shoe 27 and the rail 28. The amount of this friction between the rail and the shoe will depend on the speed and weight of the vehicle, and the amount of verticallydownward pressure applied to the member 18 by the vacuum cylinder. This will, at the same time, be further subject to the frictional conditions existing between the shoe and the rail. If the vehicle is travelling to the right, contact of the shoe 27 with the rail 28 will rotate to the member 18 in a clockwise direction, pulling arm 30 and lever 31 to the right and causing the brake to operate in the manner disclosed above. Instead of vacuum operation, the apparatus may be adapted to operate by fluidpressure, electrical or mechanical means of known types. Specification 712,534 is . referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3282256A GB869070A (en) | 1956-10-27 | 1956-10-27 | Improvements in braking systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3282256A GB869070A (en) | 1956-10-27 | 1956-10-27 | Improvements in braking systems |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB869070A true GB869070A (en) | 1961-05-25 |
Family
ID=10344513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3282256A Expired GB869070A (en) | 1956-10-27 | 1956-10-27 | Improvements in braking systems |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB869070A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0457436A1 (en) * | 1990-04-13 | 1991-11-21 | Otis Elevator Company | Disc brake for elevator |
| CN111301476A (en) * | 2020-03-09 | 2020-06-19 | 中建八局轨道交通建设有限公司 | Automatic iron shoe placing system and using method thereof |
| CN113022636A (en) * | 2021-03-22 | 2021-06-25 | 上海机电工程研究所 | Novel mechanical braking device of track pulley and track pulley |
-
1956
- 1956-10-27 GB GB3282256A patent/GB869070A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0457436A1 (en) * | 1990-04-13 | 1991-11-21 | Otis Elevator Company | Disc brake for elevator |
| CN111301476A (en) * | 2020-03-09 | 2020-06-19 | 中建八局轨道交通建设有限公司 | Automatic iron shoe placing system and using method thereof |
| CN113022636A (en) * | 2021-03-22 | 2021-06-25 | 上海机电工程研究所 | Novel mechanical braking device of track pulley and track pulley |
| CN113022636B (en) * | 2021-03-22 | 2022-03-18 | 上海机电工程研究所 | Mechanical braking device of track pulley and track pulley |
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