vacuum braked
limited

They were designed to increase the comfort level of guards who often complained about poor ride characteristics, despite sharing ranks with the much more comfortable loco pilots. Airbraked, tight-lock CBC, max speed of 100km/h. These wagons were designed for higher speed (100km/h) operations with higher axle loads (22.1t for coal, 23.5t for iron ore).

The daily progress of top 10 best online stock trading software installations at railway stations along with list of stations equipped on that day is being regularly posted by Piyush Goyal, Union Railway Minister on social media. Each power car at one end of the rake provides power when the train is running in one direction while the other operates in the other direction. The side buffers typically used on locomotives, coaches, and wagons mostly use helical springs with rubber or synthetic compression elements. Some buffer designs rely entirely on multiple packs of rubber compression packs. Previously, helical springs were the only mechanisms for compression resistance. The Jones Coupler is used on MG and some NG lines.

BOBRN are most often used for carrying coal to thermal power plants, and also for ore, stone, track ballast, etc. Each wagon holds some 60t of coal loaded from the top and unloaded from the bottom by means of the pneumatically operated doors. The contents of the wagon can be discharged completely in about 15 seconds. For instance, the original WDM-2 locos were vacuum-braked.

ACIA

Flat wagons meant primarily for transport military vehicles and other comparable loads. Cast steel CASNUB-22NLB bogies with single pipe graduated release air brakes. Transition CBC. Retractable flaps over side buffers for easier loading/unloading. Lashing points provided to pin down vehicles.

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By the 1920’s chain couplings almost all disappeared, especially as vacuum braking came into wide use. Until the late 1970s and the early 1980s, air brakes were rare. Vacuum brakes were the most commonly used continuous braking system on IR. Perhaps the most notable ‘convert’ at the time was the Mumbai Rajdhani which switched to being air-braked in 1984, hauled by twin WDM-2 locos. The Howrah Rajdhani also switched to being air-braked around 1986.

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Both of these types of temporary couplers do not perform well in practice. They were also generally in short supply at marshalling yards and elsewhere. The move to block rakes of CBC wagons in the 1980s greatly reduced the demand for these temporary coupler types.

The milk is carried in an inner barrel of stainless steel, surrounded by an outer barrel with insulation between the two. Pasteurized and chilled milk remains cool enough with such an insulated design so that it does not spoil on fairly long journeys; there is no need for refrigeration equipment. These tankers are attached to express trains and are treated on par with passenger stock, and rated for higher speeds (110km/h) than most freight stock. The BCACBM automobile carrier Coupled in units of 9 . A wagon capable of carrying upto 11 cars, with B wagon capacity of 12. Standard CBC used instead of slackless drawbars between wagons for ease of decoupling and marshalling.

IR’s passenger stock uses two types of couplers. All LHB stock have tightlock CBC (centre-buffer-coupler). Some newer ICF stock also use CBC, but the majority of ICF stock are equipped with screw couplers and side buffers.

  • As air braked stock came into wider use, many of these locos were retrofitted with air brake systems as well, hence the sub-class WDM-2A which had dual braking capability .
  • BOBRN are most often used for carrying coal to thermal power plants, and also for ore, stone, track ballast, etc.
  • The body is often painted with an olive green band.
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  • BOX wagon with side discharge/flap doors and siding roof.

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Some 24-axle threaded beam well wagons and 18-axle well wagons with integral brake vans at either end are used by BHEL for transporting large transformers. BHEL, Trichy, has a 24-axle saddle wagon named ‘Kaveri’ for transportation of large electrical equipment. The BLLA wagons are intended to be the outer wagons in a coupled group of 5 wagons, with the inner 3 being the BLLB type. The outer couplers for the BLLA are AAR ‘E’ type, and the inner couplers are slackless drawbar couplers. Bogie covered hopper wagon especially for bulk carrying food grain. Loading via ports on top with bottom discharge chutes.

Q. Freight stock often has the words “Not to be loose shunted” –– what does this mean?

Screw coupler passenger stock is no longer being manufactured. Locos in IR have air-brake systems and all new locomotives manufactured since the mid 1990s have only air brakes as the original equipment. MG and NG coaches were predominantly vacuum, but later ones were all converted to air braked. Continuous brakes were tried out by the various railway companies in the late 19th century. North Western Railway was the pioneer with trials of continuous vacuum braking in the late 1880s and early 1890s. Vacuum brakes were chosen for the simplicity of design and lower cost.

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  • The two EOGs and the coaches along the length of the train are connected by two independent sets of 3-phase cables so as to be able to handle a failure in a cable.
  • Most have an olive green band running the length of the body.
  • CASNUB 22 NLB cast steel bogies, rated for 100km/h.
  • Found mainly in the mining dominated regions of SECR and ECoR.

It appears that the poor condition of some bridges and other track structures may have been the reason behind halting the BOXN-HA production. The following codes are used now for classifying freight cars. The classification scheme is not entirely systematic. Some older wagons especially have codes that are not easily explained in this way. But in general an optional gauge code is followed by a type code which is followed by an indication of the coupler and whether the wagon is air-braked. Several of these wagons use ‘CASNUB’ bogies.

Some are still found on departmental, engineering and other works trains. VVN milk tanker A different kind of milk tanker were the small tankers donated by New Zealand that were in use in the 1980s, for instance on the Miraj-Pune Passenger. Two of these at a time were mounted permanently on a flat car with Flexicoil bogies, creating a two-tanker milk wagon with a single base. With increasing stock of LHB coaches and electrification, IR plans to eventually run almost all its passenger services using the HOG system. In this system, power is supplied from the locomotive at the head of the train, hence the term Head-on Generation .

The door-opening mechanism is triggered by lineside devices running on a 24V or 32V DC source. As the wagons in a rake pass by the triggering devices, their doors open and their contents are unloaded into the pits below the tracks (the ‘merry-go-round’ system). The versions used by the power plants have 12 bottom doors, whereas IR uses variants that have 8 doors. Hence, such wagons are marked “not to be loose shunted”, implying that they will always be shepherded gingerly into place coupled to a shunting loco.

stock

Newer stock that is air-braked also has CBC couplers, so the ‘C’ is usually dropped. E.g., BOXN for air-braked BOX wagons, not BOXCN. In the transition decades of the 80s and 90s, many locos had dual braking capabilities as there was still a lot of freight stock that was vacuum braked. Milk vans, because of the perishable nature of their cargo, have the curious privilege of being treated as passenger coaching stock with corresponding speed limits. Milk vans are often attached to passenger trains and are rated for 110km/h.

Suspension via long travel helical springs to minimize dynamic shocks. Succesor to the bulk cement and fly ash https://1investing.in/rying BCCW wagon . Loading is through ports on the top, unloading via chutes at the bottom between the bogies. The fly ash version has a max axle load of 17.75t; cement version has axle load of 22.32t.

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Feeding energy back to the cables is more complex with AC power, but the latest WAP and WAG series locos have provision for this. In 2003, when freight operations were computerised, IR switched to a 11-digit numbering scheme for all wagons to maintain uniformity and keep track of wagons. Used mainly for iron ore transport, though can be sometimes be seen hauling coal. They are now rare, being supplanted by the -EL version . BOXNHL, the most common type of open wagon, is made of stainless steel, but otherwise most wagons are constructed using steel. Some special steel alloys are used to reduce corrosion, as on the BOXNCR , but these are rare and not produced in large numbers.

screw couplers

Original model had entirely riveted construction. BOXT, BOXR, and BOXC are the same with transition, screw, and CBC couplers, respectively. Container flat car for ISO containers, with retractable anchor locks. Originally used by CONCOR before switching over to BLCA/BLCB flats.

These type of couplers are no longer used on IR. CBC equipped ICF stock started as an experiment in the early 2000s. One rake of the Prayagraj Express was fitted with CBC as a trial. CBC overcome some of the limitations of the screw couplers — limited draft load and energy absorption capacity, lack of anti-climbing feature, etc. CBC would also reduce the inter-coach distance.

Underside doors on the wagons are operated pneumatically, and can be controlled by a lineside triggering mechanism. CASNUB 22 NLB cast steel bogies, rated for 100km/h. The original BOBS wagons were vaccum braked. Following the type code in the classification code a letter may denote the type of coupler, nowadays optional, as all new freight cars are fitted with centre buffer couplers . An ’N’ suffix is for ‘pneumatic’, or air-braked wagons.