How To Design Floor Type Goods Lift

           A lift, often known as a lift, is a type of vertical transportation system used to carry people or things between floors or levels of a building or structure. A standard lift is made out of a vehicle or platform hanging by steel cables or hydraulic pistons and operated by an electric motor or hydraulic pump.

            The lift vehicle is housed in a shaft or hoistway and moves between floors utilising a counterweight, cable, and pulley system. A control system, which is normally placed in the lift car or in a machine room at the top of the shaft, governs the lift's movement and allows people or products to enter and depart the car at the specified floor.

Type Of Lift

            Based on its design and functioning, lifts are categorised into several sorts. Some examples of frequent types of lifts are:

1. Passenger Lifts: These lifts are often employed in residential and commercial structures to transport passengers between levels.

2. Freight Lifts: These elevators are often used in warehouses, factories and other industrial settings to carry products and commodities between floors.

3. Service Lifts: These lifts are often smaller and slower than passenger lifts and are intended for usage by maintenance and service staff.

4. Dumbwaiters: These elevators are often employed in restaurants, hotels, and other business settings to transfer small objects.

Lifts are necessary in modern structures for providing safe and efficient vertical movement. To guarantee the safety of passengers and operators, they must be built and fitted in accordance with rigorous safety regulations.

How To Design Floor Type Goods Lift

            A floor lift's design entails a number of calculations to ensure that it is safe, efficient, and capable of meeting the demands of the building and its inhabitants. Following are some of the main calculations in lift design:

1.      Load capacity: The lift's load capacity must be estimated to ensure that it can safely transport the projected number of passengers as well as any equipment or products. The weight of the lift vehicle, plus the weight of the passengers and any additional load, is commonly used to compute the load capacity.

2.      Speed and travel time: The lift's speed is normally estimated depending on the building's height and the required travel time between floors. The trip time is often calculated using the average time it takes a person to go up or down a flight of stairs, which is around 15-18 seconds per level. The lift's speed is then changed to keep the trip duration within this range.

3.      Motor power: The lift's motor power is estimated depending on the load capacity and desired speed. The motor power must be adequate to lift and move the load at the specified speed while also accounting for friction and wind resistance.

4.      Energy consumption: The lift's energy consumption is determined using parameters such as motor power, lift speed, and number of trips per day. The goal is to design the elevator such that it uses as little energy as feasible while yet satisfying the demands of the building and its residents.

5.      Elevator shaft size: The elevator shaft's size must be estimated to allow the lift vehicle and any necessary clearances. The size of the shaft is usually decided by the size of the lift vehicle plus any extra space necessary for the counterweight and gear.

6.      Safety aspects: A variety of safety parameters, including as braking distance, acceleration rate, and weight distribution, must be calculated and integrated into the lift design.

A floor lift's design entails a number of sophisticated calculations to guarantee that it is safe, efficient, and capable of meeting the demands of the building and its inhabitants. These calculations are usually made by skilled lift engineers who take a variety of parameters into account to guarantee a successful lift design.

 

How To Calculate The Lift Motor And Gear Box (Chain / Rope Mechanism)

            The formula to calculate the motor torque for a lift depends on several factors such as the load, the radius of the pulley, the speed, and the efficiency of the lift system. However, here is the general formula to calculate motor torque:

Torque (in Nm) = Force (in N) x Radius (in meters)

            In this formula, Force is the force required to lift the load, and Radius is the radius of the pulley or the lift sheave. The torque is typically measured in newton-meters (Nm).

To calculate the force required to lift the load, the following formula can be used:

Force (in N) = Load (in kg) x Gravitational acceleration (9.81 m/s2)

            Load is the weight of the lift car and its occupants in this calculation, while acceleration due to gravity is a constant value of 9.81 metres per second squared.

            After calculating the force, multiply it by the radius of the pulley or lift sheave to find the motor torque necessary to raise the weight.

            You may also use the following formula to compute motor power with torque:

P = (2 * pi * N * T) / 60,000,

where

P denotes power in kilowatts (kW),

T denotes torque in newton-meters (Nm),

N is the motor's rotational speed in revolutions per minute (RPM),

 pi is a mathematical constant equal to 3.14.

The denominator factor of 60,000 is used to convert time units from seconds to minutes.

            Both of these formulae may be used to compute the needed motor power for a particular torque and rotational speed, which is useful when developing and choosing motors for diverse applications such as floor lifts, conveyor systems, and other machinery.