GB2379069A - A clamping device for attaching equipment to a single rail in a railway - Google Patents
A clamping device for attaching equipment to a single rail in a railway Download PDFInfo
- Publication number
- GB2379069A GB2379069A GB0215019A GB0215019A GB2379069A GB 2379069 A GB2379069 A GB 2379069A GB 0215019 A GB0215019 A GB 0215019A GB 0215019 A GB0215019 A GB 0215019A GB 2379069 A GB2379069 A GB 2379069A
- Authority
- GB
- United Kingdom
- Prior art keywords
- rail
- speed restriction
- track
- temporary speed
- clamp
- 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.)
- Granted
Links
- 239000011152 fibreglass Substances 0.000 claims abstract description 5
- 230000004907 flux Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 2
- 230000011664 signaling Effects 0.000 abstract 1
- 230000001681 protective effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 206010014405 Electrocution Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
- B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
- B61L3/121—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves using magnetic induction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L3/00—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal
- B61L3/02—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control
- B61L3/08—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically
- B61L3/12—Devices along the route for controlling devices on the vehicle or train, e.g. to release brake or to operate a warning signal at selected places along the route, e.g. intermittent control simultaneous mechanical and electrical control controlling electrically using magnetic or electrostatic induction; using radio waves
- B61L3/126—Constructional details
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B26/00—Tracks or track components not covered by any one of the preceding groups
- E01B26/005—Means for fixing posts, barriers, fences or the like to rails
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Train Traffic Observation, Control, And Security (AREA)
Abstract
A device for clamping a device or signalling equipment to a rail in a railway comprises a single clamp with a fixed portion 4 which carries the equipment and movable portion 3. The clamp device is located beneath the rail, with the rail being gripped between the pawls 2 and 3. The distal end pawl 3 may be spring loaded and biased to the closed or clamped position. The clamp may be provided with a locking mechanism 10, which holds the clamp shut around the rail. The equipment may be a speed restriction device or a track magnet and may be housed in a fibre glass housing or protected by rubber pads facing the oncoming traffic.
Description
<Desc/Clms Page number 1>
TEMPORARY SPEED RESTRICTION TRACK UNIT
The present invention relates to a temporary speed restriction track unit for use on railways.
Conventionally, a train driver is given published route information containing details of speed restrictions. However, sometimes due to urgent maintenance work or due to an incident or accident on the line, it is necessary to set up a temporary speed restriction ("TSR") on the track. This is done by placing a magnet on the track between the rails. The magnet interacts with a warning and optionally automatic braking system in the driver's cab. When the train passes over the magnet an audible and/or visual warning may be given to the driver in the cab. An emergency warning board may also be positioned along the track to give the driver advance visual warning.
A known temporary speed restriction track unit comprises a magnet which is positioned centrally between two rails. The temporary speed restriction track unit has two arms and each arm is secured to a rail. The known temporary speed restriction track unit is awkward to attach to the two rails and in order to place the unit the ballast by both rails must be excavated. It can take two engineers several hours to position and secure the known unit. Furthermore, since a power rail is often present, there is a danger of electrocution to the engineers since the rail adjacent the power rail must be excavated.
According to a first aspect of the present invention there is provided a temporary speed restriction track unit comprising a magnet and a single clamp for clamping to a rail of a railway line so that the unit is only attached to one rail of the railway line.
The temporary speed restriction track unit
<Desc/Clms Page number 2>
middle of two rails ; and means for locking the clamp to the rail.
A particularly preferred feature of the present invention is that the magnet may have a magnetic flux density greater than conventional track magnets which have a standard strength of 60 Gauss. Strengths of 220 Gauss may be used, particularly when the magnets are to be placed on track wherein trains may travel at speeds of 80-100 mph (128-160 km/h).
Various embodiments of the present invention will now be described, by way of example only, and with reference to the accompanying drawings in which:
Fig. l (a) shows a side view of a temporary speed restriction track unit according to an embodiment of the present invention and Fig. l (b) shows a plan view of the unit ; and
Fig. 2 (a) shows a side view of a particularly preferred temporary speed restriction track unit being located in position and Fig. 2 (b) shows a side view of the unit having been fixed in position.
A temporary speed restriction track unit 1 according to an embodiment of the present invention is shown in Fig. 1. The temporary speed restriction track unit 1 has a single arm 4 with a clamping mechanism at one end. The clamping mechanism comprises a fixed portion 2 and a movable portion 3. The movable portion 3 is preferably spring loaded and biased towards the fixed portion 2.
The unit 1 is attached to the foot of a running rail and positioned squarely in the middle of the two rails forming the railway track. The unit 1 may be locked in position with a key and/or padlock.
The unit 1 comprises a magnet assembly 5 which is arranged to be positioned in use in between the two rails. The magnet assembly 5 may be protected in the direction of travel of the train by rubber blocks 6 on each side of the magnet assembly 5 as shown in Fig.
1 (b).
<Desc/Clms Page number 3>
invention, there is provided a method of installing a warning device on to a railway line, comprising: clamping a temporary speed restriction track unit comprising a magnet and a single clamp to a rail of a railway line.
According to a fourth aspect of the present invention, there is provided a temporary speed restriction track unit wherein the temporary speed restriction track unit is only attached to one rail of a railway line.
According to a fifth aspect of the present invention, there is provided a track magnet having a body portion and a single arm portion for attachment to a single rail of a railway line.
According to a sixth aspect of the present invention, there is provided a track magnet assembly for interacting with a warning system in a train driver's cab, the track magnet assembly having only one clamp means for clamping the track magnet assembly to a rail of a railway line.
Preferably, the clamp means comprises a telescopic arm, further preferably comprising a fixed portion and a movable portion, the movable portion preferably sliding within the fixed portion or on the fixed portion. The movable portion is preferably spring biased.
The temporary speed restriction track unit is preferably locked or secured by a bolt which prevents further movement of a telescopic arm which forms one part of the clamp mechanism.
According to a seventh aspect of the present invention, there is provided a temporary speed restriction track unit for interacting with a warning system in a train, the temporary speed restriction track unit comprising : a fibre glass housing having a magnet assembly therein; a single clamp for securing the housing to just one rail and for positioning the magnet assembly in the
<Desc/Clms Page number 4>
Claims 1. A temporary speed restriction track unit comprising a magnet and a single clamp for clamping to a rail of a railway line so that the unit is only attached to one rail of the railway line.
2. A temporary speed restriction track unit as claimed in claim 1, wherein said magnet is arranged to be positioned approximately centrally between two rails.
3. A temporary speed restriction track unit as claimed in claim 1 or 2, wherein said single clamp comprises a fixed portion and a movable portion.
4. A temporary speed restriction track unit as claimed in claim 3, wherein said movable portion is sprung loaded.
5. A temporary speed restriction track unit as claimed in claim 4, wherein said movable portion is biased towards said fixed portion.
6. A temporary speed restriction track unit as claimed in any preceding claim, further comprising a locking mechanism for locking said clamp to said rail.
7. A temporary speed restriction track unit as claimed in any preceding claim, wherein said magnet has a magnetic flux density selected from the group consisting of: (i) 70 Gauss; (ii) 100 Gauss; (iii) 150 Gauss; (iv) 200 Gauss; and (v) 220 Gauss.
8. A temporary speed restriction track unit as claimed in any preceding claim, wherein said magnet is housed in a protective fibre glass housing.
<Desc/Clms Page number 5>
The unit 1 is approximately 950 mm long x 189 mm high and weighs approximately 25 kg. The movable clamp portion 3 is approximately 100 mm wide.
A particularly preferred embodiment is shown in Fig. 2. According to this embodiment, a magnet assembly 7 is provided within a fibre glass protective housing 8.
The housing 8 extends to a clamping mechanism which is preferably either similar to or identical with the clamping mechanism 2,3 shown in Fig. 1. A latch 9 may be used to release and/or extend movable portion 3 so that the clamping mechanism can engage with the underside of a rail 8. Once in place, the track unit 1 may be secured to the rail 8 by the latch 9 and/or a locking bar 10.
As will be readily apparent, the track unit 1 is stronger, easier to install and safer to install than known temporary speed restriction track units.
Although the present invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made without departing from the scope of the invention as set forth in the accompanying claims.
Claims (1)
17. A track magnet assembly as claimed in claim 16, wherein said clamp means comprises a telescopic arm.
18. A track magnet assembly as claimed in claim 17, wherein said telescopic arm comprises a fixed portion and a movable portion, said movable portion sliding within said fixed portion or on said fixed portion.
19. A track magnet assembly as claimed in claim 18, wherein said movable portion is spring biased.
20. A temporary speed restriction track unit for interacting with a warning system in a train, said temporary speed restriction track unit comprising: a fibre glass housing having a magnet assembly therein; a single clamp for securing said housing to just one rail and for positioning said magnet assembly in the middle of two rails; and means for locking said clamp to said rail.
<Desc/Clms Page number 7>
9. A temporary speed restriction track unit as claimed in any preceding claim, wherein one or more rubber blocks are used to protect said magnet.
10. A railway warning system comprising: a housing having a body portion housing a magnet and a single arm attached to said body portion at a proximal end and having a spring loaded clamp mechanism at the distal end for attachment to the rail of a railway line.
11. A railway warning system as claimed in claim 10, further comprising a locking means for locking or otherwise securing the clamp mechanism to said rail.
12. A railway warning system as claimed in claim 10 or 11, wherein said magnet has a magnetic flux density 200 Gauss.
13. A method of installing a warning device on to a railway line, comprising: clamping a temporary speed restriction track unit as claimed in any of claims 1-9 to a rail of a railway line.
14. A temporary speed restriction track unit wherein said temporary speed restriction track unit is only attached to one rail of a railway line.
15. A track magnet having a body portion and a single arm portion for attachment to a single rail of a railway line.
16. A track magnet assembly for interacting with a warning system in a train driver's cab, said track magnet assembly having only one clamp means for clamping said track magnet assembly to a rail of a railway line.
<Desc/Clms Page number 8>
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0319942A GB2390721B (en) | 2001-06-28 | 2002-06-28 | Temporary speed restriction track unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0115786A GB0115786D0 (en) | 2001-06-28 | 2001-06-28 | Temporary speed restriction track |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0215019D0 GB0215019D0 (en) | 2002-08-07 |
| GB2379069A true GB2379069A (en) | 2003-02-26 |
| GB2379069B GB2379069B (en) | 2003-12-17 |
Family
ID=9917508
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0115786A Ceased GB0115786D0 (en) | 2001-06-28 | 2001-06-28 | Temporary speed restriction track |
| GB0215019A Expired - Fee Related GB2379069B (en) | 2001-06-28 | 2002-06-28 | Temporary speed restriction track unit |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0115786A Ceased GB0115786D0 (en) | 2001-06-28 | 2001-06-28 | Temporary speed restriction track |
Country Status (2)
| Country | Link |
|---|---|
| GB (2) | GB0115786D0 (en) |
| IE (2) | IE20020536A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2712365A1 (en) * | 1977-03-22 | 1978-09-28 | Pintsch Bamag Ag | Quick-release clamp for track mounted sensors - has claw block operated by spring-loaded plunger and lever system |
| GB2147350A (en) * | 1983-10-03 | 1985-05-09 | Servo Corp Of America | Rail clamp for railway equipment |
| EP0374697A1 (en) * | 1988-12-14 | 1990-06-27 | ING. JOSEF FRAUSCHER Hydraulik und Sensortechnik | Device for attaching switching and measuring devices |
| SU1615008A1 (en) * | 1988-12-27 | 1990-12-23 | А.Э.Штанке | Arrangement for securing track sensor to rail |
| JPH08119105A (en) * | 1994-10-27 | 1996-05-14 | Sanritsu Koden Kk | Detector support device |
-
2001
- 2001-06-28 GB GB0115786A patent/GB0115786D0/en not_active Ceased
-
2002
- 2002-06-28 IE IE20020536A patent/IE20020536A1/en not_active IP Right Cessation
- 2002-06-28 GB GB0215019A patent/GB2379069B/en not_active Expired - Fee Related
- 2002-06-28 IE IE20040081A patent/IE20040081A1/en not_active Application Discontinuation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2712365A1 (en) * | 1977-03-22 | 1978-09-28 | Pintsch Bamag Ag | Quick-release clamp for track mounted sensors - has claw block operated by spring-loaded plunger and lever system |
| GB2147350A (en) * | 1983-10-03 | 1985-05-09 | Servo Corp Of America | Rail clamp for railway equipment |
| EP0374697A1 (en) * | 1988-12-14 | 1990-06-27 | ING. JOSEF FRAUSCHER Hydraulik und Sensortechnik | Device for attaching switching and measuring devices |
| SU1615008A1 (en) * | 1988-12-27 | 1990-12-23 | А.Э.Штанке | Arrangement for securing track sensor to rail |
| JPH08119105A (en) * | 1994-10-27 | 1996-05-14 | Sanritsu Koden Kk | Detector support device |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2379069B (en) | 2003-12-17 |
| GB0215019D0 (en) | 2002-08-07 |
| IE20040081A1 (en) | 2004-03-24 |
| IE20020536A1 (en) | 2003-04-30 |
| GB0115786D0 (en) | 2001-08-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20100628 |