Functions of Fish Plates are : a) To join the rail ends to maintain the line and level of the top table and gauge face of the rail ends and to resist the impact and prevent the deflection of the rail joint with the help of closely spaced sleeper support b) To transfer the load of the wheels from one rail to the other
Why are fish bolts and fish plates used rails?
Brief Description Fish Bolts and Nuts are used to fasten the Fish plates Fish Plates are used for holding two rails in horizontal as well as in vertical planes at equal height At each rail joint, a pair of fish plates is used
How do fish plates work?
The fishplate is intended to provide sliding support to the rail Overtightening the bolts beyond the correct torque will restrict the sliding action leading to potential misalignment Track fastenings and Lubricant
What is used for connecting fish plate?
In rail terminology, a fishplate, splice bar or joint bar is a metal bar that is bolted to the ends of two rails to join them together in a track
How important is fish bolt to railway track?
As an indispensable part of railway system, railway fish bolt plays an important role In high-speed railway lines, the speeding trains pass through the rails so fast, so we should guarantee the quality of railway components, including railway fish bolts
What is fish bolt used for?
Fish bolt is used for connecting the rail ends with the help of rail joints Each rail joint needs at least two fish bolts according to the rail standard, and the bolt should be in proper size and suitable place Rail bolt is usually used with spring washer and nut to fasten the rail tightly
What is a fish plate in construction?
A fishplate is a flat metal plate used to join two wood or metal members by means of a number of bolts or nails passing through both the member and plate Fishplates impart a sturdy mechanical joint which requires little or no profile modification of the members they join
How many types of fish plates are there?
Fishplate also known as rail joint bar has 4 major types: Standard Fishplate, Joggled Fishplate, Special Fishplate, Combination/Compromised fishplate
What is the size of fish plate?
The fish plate is a specialized plate about 8 to 9 inches in diameter It is not made as part of a dinnerware set, but is recognizable by ornamentation in a fish pattern
How are rails joined?
Joining rails The traditional method of joining the rails is to bolt them together using metal fishplates (jointbars in the US), producing jointed track For more modern usage, particularly where higher speeds are required, the lengths of rail may be welded together to form continuous welded rail (CWR)
What is Railway drag theory?
3Drag Theory According to drag theory, the backward thrust of the driving wheels of a locomotive has the tendency to push the rail backwards, while the thrust of the other wheels of the locomotive pushes the rail in the direction in which the locomotive is moving
What is dog Spike in railway?
Dog Spike A dog spike, also called cut track spike, is often used to fasten T-shaped railway track to wooden sleepers, to secure a rail and tie plate to the ties in track, which has a pointed penetrating head with square shank, and the underside of the spike head is sloped to compromise the top of the rail base
What is the length and diameter of fish plate?
The size of billet for manufacturing fish plate bars shall be minimum 125mm X 125mm in normalized heat treated condition
What is a fish bolt?
Definition of fishbolt British : a bolt for securing a fishplate specifically : a bolt joining two opposite fishplates
Which method is used in joint of railway tracks?
The flash butt welding method is the standard method of welding of rails on Indian Railways Most railways have one or more flash butt welding plants where rails are welded together
What is tongue rail?
Tongue rail – It is a tapered moveable rail connected at its thick end to lead rail The tapered end is called as Toe and thick end is called a Heel Stock rail – It is a running rail against which tongue rail functions Point – A pair of tongue rails with their stock rails is termed as a point
What is used to tighten or loose fish bolts?
Rail/Weld Failures These are gripping tools used to tighten or loosen fasteners like nuts and bolts They are used for the tighter grip they provide Typically, spanners are made from steel alloys, such as chrome vanadium steel
What is the length of fish plate in MM?
Table Details of Standard Fishplates Rail section Drawing number Total length of fish plate [mm (in)] 52kg 090M 610(24) 90R 071M 610(24) 90R 059M 460(18) 75R 060M 420(165)
At what angle should a railway line cross a road?
906 (1) All roads should preferably cross the railway line at right angles In special cases, when modification is required to suit the road approaches the angle of crossing should not be less than 45° (2) At all level crossings the gate posts shall be fixed square to the road
What is creep in railway?
Creep in rail is defined as the longitudinal movement of the rails in the track in the direction of motion of locomotives Creep is common to all railways and its value varies from almost nothing to about 6 inches or 16cm
What is Railway chair?
CHAIRS : They are used to hold the double headed and bull headed rails in required position They are made of cast iron having two jaws and a rail seat In order to fix the double headed or bull headed rail to a chair, the rail is placed between the two jaws of the chair
Which crockery is used for fish course?
Different types of crockery & their sizes Sno Name Uses 2 Half Plate Used to serve starters, pasta, dessert, fish etc 3 Full Plate Used to serve the main course 4 Soup bowl Used to serve soup, breakfast cereals 5 Soup cup Used to serve thin soup
What is plate used for?
A plate is a broad, concave, but mainly flat vessel on which food can be served A plate can also be used for ceremonial or decorative purposes Most plates are circular, but they may be any shape, or made of any water-resistant material
What is service plate?
Definition of service plate : a large elaborate plate used to indicate a place at table and to serve as an under plate during the first courses