Dock Leveler

Powered

Walking

Mannual

Riding


Pallet

No Stacking
one

Click on the descriptions below to read about the functionalty factors of Equipment

General Description
  • Dock levelers are fixed bridge that link the warehouse capacity to a truck for for loading and or unloading purpose
  • Dock leveler selection depends upon the the volume of traffic and the weight of the highest load to be handled
  • The dock leveler appropriateness is highly dependent upon the types of vehicles that they handle
  • Some standard size trucks and their bed heights are shown below:
Types of dock leveler
  • Dock levelers have two main variants namely, 1) mechanic dock leveler, and 2) hydraulic dock leveler
  • Mechanic dock levelers are usually spring actuated whereas hydraulic dock levelers are electro-hydraulic systems
  • Mechanic dock levelers are cheaper than their hydraulic counterpart. However, on a long run run hydraulic levelers are more cost effective
  • Hydraulic levelers require less maintenance than their mechanic counterpart
  • Both hydraulic and mechanic dock leveler work in above and below positions
Dock leveler capacity

The selection of dock leveler capacity is dependent on four factors namely 1) maximum gross weight (max. weight of the truck + maximum weight of load), 2) frequency of usage, 3) Gradability of the dock leveler (difference between dock height and truck, and 4) speed of the loading vehicle

  • While calculating maximum gross weight, the number of truck, their size and their wheel composition should be taken into consideration
  • For light or normal usage,the rated capacity should be 2 to 2.5 times the maximum gross weight
  • For heavy usage, the rated capacity should be 4 to 5 times the maximum gross weight
  • The Rated Dock leveler capacity is calculated under the conditions when the Gradability is between 4 degree to 7 degree, the speed of truck is between 8 km/h to 12 km/h and the frequency is around 6 to 8 trucks per day with 15 to 20 rollover per truck
  • Dock leveler height

    The dock height determines the Gradability from the door to the truck. The dock leveler selection criteria depend on the standard Gradability of the material handling trucks to be used for loading and unloading

    Higher grade percentage can cause over hang, damage to the bed and the material handling equipment and load spillage. For standard dock levelers, the height lies between 1200mm to 1350mm

    Gradability

    Gradability for dock levelers is the angle that is formed in between the surface of the base frame and the platform of the leveler. Gradability or the angle of incline/ decline is stated as percentage and is obtained by dividing the increase in height of slope per meter of slope/ platform base length

    Gradability = Height of slope/ Unit length of slope X 100%

    Platform length

    The length of platform allows increment and decrement in the necessary Gradability that is required

    Normally, the Gradability factor for some of the general equipment are as mentioned below

  • Manual pallet truck: 7 percent
  • Electric truck: 10 percent
  • Inetrnal Combustion Engine truck: 15 percent
  • Platform width

    A platform width enables the convenience of loading and unloading application. The platform width allows the maneuverability of truck and reduces the drop off area that is created due to lip tapering

    Usually the width of the dock levelers has three options namely 1800mm, 2000mm and 2150mm normally. Some manufacturers also offer customized length

    Parts of Dock leveler

    Maintenance props are safety measures used in the dock levelers that are used to hold levelers in open position during maintenance of the equipment

    Toe guards closes the sides of dock leveler. A full range toe guard eliminates the pinch points created on at the sides of the dock leveler when levelers are lowered for operation

    Full range toe guard are standard in hydraulic dock levelers and comes as options with mechanic dock levelers

    Lip is the extension part of the dock leveler that bridges the truck with the dock leveler

    During the loading and unloading activity, the the lip ensures the contact with truck’s internal bed. If the lip is small, the material handling trucks will hit the edge making the transfer rough and inefficient

    Some standard size of the lip is around 400mm which can be increased further to 500mm also. Increased lip helps counter bumper projections and substantial height difference

    The base frame is put in the pit to provide stability and rigidness to the dock leveler. The pit can generally be of two types namely, 1) performed pit, and 2) pour in place

    Performed pits are made in concrete docks beforehand. Performed pits are a little cheaper initially than pour in place pit but require more time and cost during dock leveler installation

    Pour in place pits are made by creating a notch in the foundation wall for dock leveler installation prior to the floor being poured. During installation, a concrete slab is set for support

    Lip is the extension part of the dock leveler that bridges the truck with the dock leveler

    During the loading and unloading activity, the the lip ensures the contact with truck’s internal bed. If the lip is small, the material handling trucks will hit the edge making the transfer rough and inefficient

    Some standard size of the lip is around 400mm which can be increased further to 500mm also. Increased lip helps counter bumper projections and substantial height difference