GB1135572A - Hydraulic devices for retarding of wheeled vehicles - Google Patents
Hydraulic devices for retarding of wheeled vehiclesInfo
- Publication number
- GB1135572A GB1135572A GB3268465A GB3268465A GB1135572A GB 1135572 A GB1135572 A GB 1135572A GB 3268465 A GB3268465 A GB 3268465A GB 3268465 A GB3268465 A GB 3268465A GB 1135572 A GB1135572 A GB 1135572A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- piston
- chamber
- pressure
- outlet
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
1,135,572. Track brakes. DOWTY MINING EQUIPMENT Ltd. 22 July, 1966 [30 July, 1965], No. 32684/65. Heading F2E. In a telescopic hydraulic retarder device for fixing adjacent a track including a piston 12, which is depressible by the wheels of a passing rail vehicle into a fixed cylinder 11 and forms a variable volume hydraulic chamber 14 therewith, and a pressure responsive valve 24 dis posed between said chamber and a lower pressure outlet 15, which valve re mains open when the pis ton is depressed by vehides running at low speeds but closes under the pressure differential developed across it when the piston is depressed by vehicles exceeding a predetermined speed whereupon flow takes place through a high pressure valve 31, said valve 24 comprises a valve housing formed by larger and smaller coaxial bores 17 and 18 in the piston walls and a movable annular valve member 24, which is urged to the open position shown by a spring 34 and has a flange 25 engageable with the smaller bore to close communication between the chamber 14 and fluid outlet 15. A high pressure piston relief valve 31 is contained by the annular valve member and is spring-urged with the latter against a stop 37. On depression of the piston by a vehicle wheel moving below a predetermined speed, flow from chamber 14 takes place past flange 25 and ports 23 to outlet 15. On depression of the piston by a vehicle wheel moving in excess of said predetermined speed, the pressure drop across the valve causes the flange 25 to move into the bore 18 to close off chamber 14 from the outlet. Further discharge of fluid may then take place through piston valve 31 which is lifted by fluid pressure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3268465A GB1135572A (en) | 1965-07-30 | 1965-07-30 | Hydraulic devices for retarding of wheeled vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3268465A GB1135572A (en) | 1965-07-30 | 1965-07-30 | Hydraulic devices for retarding of wheeled vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1135572A true GB1135572A (en) | 1968-12-04 |
Family
ID=10342457
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3268465A Expired GB1135572A (en) | 1965-07-30 | 1965-07-30 | Hydraulic devices for retarding of wheeled vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1135572A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4474271A (en) * | 1981-05-20 | 1984-10-02 | Stabilus Gmbh | Shock absorber unit |
CN110001706A (en) * | 2019-05-14 | 2019-07-12 | 西南交通大学 | A kind of goods train deceleration top based on ball screw framework |
-
1965
- 1965-07-30 GB GB3268465A patent/GB1135572A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4474271A (en) * | 1981-05-20 | 1984-10-02 | Stabilus Gmbh | Shock absorber unit |
AT391530B (en) * | 1981-05-20 | 1990-10-25 | Stabilus Gmbh | SHOCK ABSORBER UNIT |
CN110001706A (en) * | 2019-05-14 | 2019-07-12 | 西南交通大学 | A kind of goods train deceleration top based on ball screw framework |
CN110001706B (en) * | 2019-05-14 | 2023-09-29 | 西南交通大学 | Freight train retarder based on ball screw mechanism |
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