Tippler Machines Overview
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Questions and Answers

What is the minimum thickness requirement for the clamp pad?

  • 60 mm
  • 50 mm (correct)
  • 40 mm
  • 30 mm

    • What is the maximum force that can be exerted by the top clamps per clamp pad?

  • 1.5t (correct)
  • 2.5t
  • 1.0t
  • 2.0t

    • Why is it important to check the level and alignment of the rail on the tippler table?

  • To enhance the aesthetic appearance
  • To ensure proper speed during operation
  • To prevent jerks during in-haul and out-haul (correct)
  • To avoid electrical failures

    • What should be checked for the wagon bogie spring relief mechanism?

    <p>Provision in top clamp locks</p> Signup and view all the answers

    What is the purpose of checking the gradient on the outhaul side?

    <p>To assure satisfactory working of stop movement</p> Signup and view all the answers

    What is the primary use of tippler machines?

    <p>Tippling of BOX ‘N’ wagons loaded with coal</p> Signup and view all the answers

    Which of the following types of tipplers are installed in private sidings?

    <p>Side discharge and Rotary type tipplers</p> Signup and view all the answers

    What should the top clamping pressure be designed to do?

    <p>Prevent any deformation of the wagon structure</p> Signup and view all the answers

    How should the side support beams of tipplers be designed?

    <p>Articulated to accommodate wagon stanchions</p> Signup and view all the answers

    What is the minimum width that side supports must contact the wagon?

    <p>1950 mm</p> Signup and view all the answers

    What is a key requirement for the design of components that contact the wagons?

    <p>They must not damage the wagons or its paint</p> Signup and view all the answers

    What is the height range for the side supports of tipplers above rail level?

    <p>1000 mm to 2950 mm</p> Signup and view all the answers

    What should be the type of contact between the side support beam and the side stanchions of the wagon?

    <p>Metal to metal contact</p> Signup and view all the answers

    What type of movement should the side support beam have?

    <p>Hydraulic arrangement</p> Signup and view all the answers

    What is the purpose of the pressure gauge on the side support's hydraulic arrangement?

    <p>To read the hydraulic pressure</p> Signup and view all the answers

    What mechanism should be in place to prevent spillage during material handling?

    <p>Design that avoids spillage</p> Signup and view all the answers

    Which safety measure ensures the secure holding of wagons in all operating positions?

    <p>Automatic holding devices</p> Signup and view all the answers

    How should the tippler be designed in relation to the angle of tippling?

    <p>Limited angle of tippling</p> Signup and view all the answers

    What feature is necessary to prevent the overrun of wagons in either direction?

    <p>Built-in devices</p> Signup and view all the answers

    What should happen to the side support beam at the end of the tippling cycle?

    <p>Return to home position</p> Signup and view all the answers

    Which of the following is not allowed with the side support beam's movement?

    <p>Using external counterweights</p> Signup and view all the answers

    What is the purpose of a device that prevents an empty wagon from being released until the tippler is back in its original position?

    <p>To ensure safety during the tipping process</p> Signup and view all the answers

    Which design feature is recommended to aid in maintenance and cleaning of equipment?

    <p>Accessibility of lubrication points without removing guards</p> Signup and view all the answers

    What type of drive unit is recommended for the side arm charger to avoid sudden jerks or slippages?

    <p>Rack &amp; pinion systems</p> Signup and view all the answers

    Why should sharp edges and corners be avoided in working spaces on tipplers?

    <p>To minimize the risk of accidents and injuries</p> Signup and view all the answers

    What is the function of the wheel grippers located on the tippler table?

    <p>To prevent inadvertent motion of wagons during tippling</p> Signup and view all the answers

    What type of technology should be used to achieve slow-speed movement of wagons for positioning on the tippler table?

    <p>Low speed hydraulic motors</p> Signup and view all the answers

    What is the primary function of the integrated controls provided for the wagon positioning system?

    <p>To interlock operations for safety</p> Signup and view all the answers

    For which aspect must the side arm charger have sufficient capacity?

    <p>For moving complete trains or some wagons</p> Signup and view all the answers

    Which of the following is NOT a benefit of designing equipment for maintenance and cleaning?

    <p>Greater downtime for repairs</p> Signup and view all the answers

    What should be ensured about the parts projecting into working spaces?

    <p>They should be kept to a minimum size</p> Signup and view all the answers

    What is a necessary feature of wheel grippers according to the requirements?

    <p>They should be free from serrations or similar provisions.</p> Signup and view all the answers

    What is the primary purpose of retractable wheel chocks?

    <p>To prevent accidental rolling of the wagons.</p> Signup and view all the answers

    During the six monthly joint inspection of tipplers, which item is specifically checked for defects?

    <p>The steel work of the end frame platform.</p> Signup and view all the answers

    What should be ensured about the shape of the wheel chock?

    <p>It should accommodate the wheel incline for line contact.</p> Signup and view all the answers

    What aspect of the drive gear should be checked for wear during the inspection?

    <p>The matching of the rack and pinion tooth.</p> Signup and view all the answers

    Which statement about the top hydraulic clamp is correct during inspection?

    <p>The level of the clamp pad needs to be checked.</p> Signup and view all the answers

    What should be avoided in the design of the wheel grippers?

    <p>Contact with the wheel flange.</p> Signup and view all the answers

    What occurs if a coupling gives a jerk during rotation?

    <p>It will likely result in operational problems.</p> Signup and view all the answers

    What must be evaluated between the side beam and wagon side stanchion?

    <p>The gap during tipping operations.</p> Signup and view all the answers

    How should the wheel chocks be designed with respect to the wheel?

    <p>To avoid contacting the flange while blocking the tread.</p> Signup and view all the answers

    Which condition must be checked to ensure safe operation of the clamp pads?

    <p>The thickness should not be less than 50 mm.</p> Signup and view all the answers

    What is essential for the wagons during the in-haul and out-haul processes?

    <p>The level of track on the tippler table and approach rails should be the same.</p> Signup and view all the answers

    What must be ensured regarding the indicators on the tippler table?

    <p>They must be present for all types of wagon stock likely to be tippled.</p> Signup and view all the answers

    What component should be checked to allow the release of bogie springs?

    <p>The top clamp locks.</p> Signup and view all the answers

    Which factor is vital for the proper functioning of the side arm charger?

    <p>The drive pinion and rack must align perfectly.</p> Signup and view all the answers

    What design characteristic must be ensured for the side support beams of tipplers?

    <p>The beams should be capable of accommodating various stanchion shapes.</p> Signup and view all the answers

    Which feature is crucial for ensuring the effective holding of wagons during operation?

    <p>Top clamping pressure that prevents deformation while holding wagons firmly.</p> Signup and view all the answers

    What must the clamps and supports be designed to ensure regarding manufacturing imperfections?

    <p>They should distribute clamping pressure uniformly, accommodating imperfections.</p> Signup and view all the answers

    During operation, what aspect must full-face contact between the side support beam and wagon stanchions achieve?

    <p>Prevent any gaps that could lead to instability.</p> Signup and view all the answers

    What is the critical height range for side supports concerning their rail level?

    <p>1000 mm to 2950 mm</p> Signup and view all the answers

    What must the design of the tippler ensure regarding contact with wagon equipment?

    <p>No damage is caused to the wagon equipment or its paint.</p> Signup and view all the answers

    Which of the following requirements must side supports fulfill?

    <p>They must ensure full-face contact with wagons of varying lengths.</p> Signup and view all the answers

    What is the main purpose of the moveable side support beam in the tippler design?

    <p>To allow for hydraulic movement without pressure on the wagon wall</p> Signup and view all the answers

    Which safety requirement is intended to prevent material spillage during operation?

    <p>Design optimization to avoid spillage</p> Signup and view all the answers

    What feature is crucial for limiting the angle of tippling during operations?

    <p>Means to limit the angle of tippling</p> Signup and view all the answers

    What is a requirement for the design of the side support beam regarding contact mechanisms?

    <p>Direct metal to metal contact with no alternate materials</p> Signup and view all the answers

    Why should the movement of the side support beam be controlled to a crawling speed just before contact?

    <p>To avoid applying excessive pressure on the wagon sidewall</p> Signup and view all the answers

    What design aspect is essential to ensure that the tippler holds wagons securely?

    <p>Automatic devices to hold the tippler in position</p> Signup and view all the answers

    What type of movement is prohibited with the side support beam?

    <p>Movement using external counterweights</p> Signup and view all the answers

    What type of maintenance or inspection is required every six months for tipplers?

    <p>Defect checking specifically for wheel grippers</p> Signup and view all the answers

    What must be ensured about the pressure gauge for the hydraulic arrangement?

    <p>It needs to be easily accessible for reading</p> Signup and view all the answers

    What is a key design feature of the wheel grippers for ensuring safety during operation?

    <p>They should allow for lateral movement.</p> Signup and view all the answers

    What should retractable wheel chocks be designed to avoid during operation?

    <p>Contact with the wheel's flange.</p> Signup and view all the answers

    During the six-monthly joint inspection, what is to be examined in the end frame platform?

    <p>Damage or defects in steel work.</p> Signup and view all the answers

    Why is it important for the top hydraulic clamp to sit properly during the inspection?

    <p>To ensure smooth operation without jerks.</p> Signup and view all the answers

    What is the ideal contact area design for wheel chocks?

    <p>Line contact that accommodates wheel incline.</p> Signup and view all the answers

    What type of measurement is essential to check between the side beam and the wagon side stanchion?

    <p>The gap during tipping operations.</p> Signup and view all the answers

    What should be avoided in the design of the gripper holding face?

    <p>Presence of any type of serration.</p> Signup and view all the answers

    What should the drive gear inspection focus on regarding the coupling?

    <p>Smooth operation without jerks.</p> Signup and view all the answers

    What can result from irregularities in the top hydraulic clamp's level during inspection?

    <p>Inability to clamp down effectively.</p> Signup and view all the answers

    Which item should be checked for tooth wear during the drive gear inspection?

    <p>The rack and pinion teeth.</p> Signup and view all the answers

    What is a critical function of the built-in devices for wagon tipping?

    <p>To coordinate conditions that allow safe wagon tipping.</p> Signup and view all the answers

    Which design feature is essential to prevent accidental wagon release?

    <p>A device that prevents release until the tippler is in original position.</p> Signup and view all the answers

    What technology is recommended for ensuring smooth slow-speed movement of wagons?

    <p>Variable frequency AC motors.</p> Signup and view all the answers

    Why should sharp edges and corners be avoided in the design of tipplers?

    <p>To reduce the risk of injury in working spaces.</p> Signup and view all the answers

    What type of pressure should wheel grippers apply according to their design?

    <p>Balanced pressure on both sides of the wheel rim.</p> Signup and view all the answers

    Which of the following is a requirement for the side arm charger’s design?

    <p>Needs to include a positive system for centering on the tippler.</p> Signup and view all the answers

    What maintenance feature should be included for frequently used lubrication points?

    <p>Lubrication points should be easily accessible without removing guards.</p> Signup and view all the answers

    How should components projecting into working spaces be designed?

    <p>To be minimized for safety and clearance.</p> Signup and view all the answers

    What is the recommended action for chargers before final wagon positioning?

    <p>Slow down to a creeping speed.</p> Signup and view all the answers

    What is a critical function of fully integrated controls in the wagon operation system?

    <p>To interlock components and prevent operational errors.</p> Signup and view all the answers

    Study Notes

    Tippler Machines

    • Used by private siding owners to unload coal wagons.
    • Wagons are loaded and placed on the tippling unit one by one.
    • Two types: Side discharge and Rotary type.

    General Requirements

    • Components of tipplers and handling equipment must not damage wagons or their paint.
    • Top clamping pressure must hold wagons firmly, preventing running gear dislodgement without deforming the wagon.
    • Adequate compensation for manufacturing imperfections in wagon top copings and side stanchions is needed to distribute the clamping pressure uniformly on the side and top of the wagon.
    • Side supports must be the length of the longest wagon to be tippled & continuous.
    • Side supports need articulation, allowing for tapered or parallel stanchions.
    • Full-face contact between side support beam and stanchions, from 1000mm to 2950mm height is required, ensuring a minimum width of 1950mm of contact.

    Safety Requirements (Construction Stage)

    • Tippler design should avoid material spillage.
    • Devices prevent wagons from running off the track.
    • Secure wagon holding in all operating positions is essential.
    • Automatic devices hold tipplers securely during power failure.
    • There must be limits for tippling angle.
    • Arrange safety to prevent feet being trapped.
    • Coordination of devices critical for wagon tipping.
    • Empty wagon release prevention until the tippler is back in position.
    • Preventing non-scheduled wagons from entering the tippler.
    • Working spaces should have minimal protruding parts.

    Positioning System

    • Side arm chargers are needed for proper wagon placement, proportional to train or wagon numbers.
    • A positive system for centering wagons is crucial.
    • Drive unit for chargers should be a positive type (like rack and pinion) avoiding jerks.
    • Slow-speed operation is advised for wagon placement. Low-speed hydraulic, variable frequency AC, or thyristor-controlled DC motors (with epicyclical reduction) could be used.
    • Chargers must be able to slow to a creeping speed for final positioning.

    Wagon and Train Holding Devices

    • Wheel grippers are necessary to prevent wagon movement during tippling.
    • They need balanced pressure on both sides of the wheel rim and adapt to wheel gauge variations.
    • No serrations or other significant features on the holding face.
    • Retractable wheel chocks are needed to prevent accidental rolling on the tipping table.

    Check Sheet for Joint Inspection

    • This schedule is for six-monthly inspections of tippler systems by designated personnel.
    • Inspections focus on various parts, including end frame platforms, drive gears, and top hydraulic clamps.
    • Items to be examined range from steel work and gap checks in side beams to coupling inspections, pad conditions, and indicators on the tippler table.
    • The inspections also include checks for the smooth movement of components and the proper functioning of limit switches.

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    Description

    This quiz covers the essential aspects of tippler machines used for unloading coal wagons. It includes information on types, general requirements, and safety considerations during construction. Test your knowledge on the design and operational safety of tipplers.

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