Hoisting mechanisms perfected over the centuries, undergoing changes in contraction and the increasing power potential.Today, advanced developers manage to create a compact and simple design of the device.The most common system is the winch, but its working principle imposes some restrictions on use.In turn, electric hoist as the upgraded version of the winch mechanism has a higher capacity and reliability.Although a complicated structure with the presence of hoists also implies compliance with a number of specifications when installing such equipment has virtually no alternative in terms of performance and ease of use.
design
In overview, electric hoist - a drum machine, equipped with a motor brake (electromagnetic or drum), lifting cable and arrangements for the movement (the rails).If more detail to consider features of some models, it is necessary to note the presence of a lifting gear, hook suspension system and electronic engine control.The last element is optional or, or bundled.
main component of the design is the trolley, on which the movement is carried out with a load hoist.The electric motor is responsible for the lifting gear and controlled by remote control.Have hoist allows not only to diversify the ways of recovery in certain circumstances premises, but also to more complex lifting scheme, which also involves the console and overhead cranes.
operating parameters
Key performance hoist any load is released, the maximum distance of action and the trolley speeds.The range of weight of cargo is permitted to rise, ranging from 250 to 10 thousand. Kg.This refers to the most popular electric hoist 1 ton, which is the best option for speed and lifting capacity.The maximum distance may rise more than 30 meters, and a minimum of 5-6 m. As can be seen, the technical capabilities of the electrical units in the order of superior hand mechanisms that are difficult to control at high altitudes.
average speed for vertical lifting hoist is 8 m per minute and the same operation in the horizontal direction is 20 m per minute.Again, this averages, and the market can meet the modification working on mikroskorostyah.For example, the 0.5 ton electric hoist capable of low speed to perform a large number of responsible and accurate lifting operations - heavy-duty models such problems can not cope.
Applications
hoist Areas of use include construction, manufacturing, industry and private households.Wherever you want to work with the load, you can use this machine.However, the introduction of high-tech construction hoists and motors caused and technical requirements for the operation and installation.That is, in a small room, even a modest technical specifications electric hoist 1 ton can cause problems in the plant.On the other hand, the possibility of working at different speeds, a variety of performance and lifting rail system allows the movement to introduce such mechanisms in complex production lines and warehouses that require precision lifting operations and stability in their performance.
The principle of
Despite the introduction of a number of additions to the design compared with the classic device winch, hoist retained the simple working principle.To begin, it is installed and connected to the network.Next, the operator touches an object on a cargo hook, fixes it with a special carbine and includes the lifting mechanism through the control panel.Since then, the electric hoist drum spins and the winding rope (or chain).When the load rises to the desired level, the user presses "stop".The brake system captures the lifting wire in the current position, allowing further operations with the cargo.
Modern electric hoists have specific recommendations on operating conditions.This applies to direct recovery intervals and rest.Following the instructions, you can eliminate the risks of overloading the electric motor and other disturbances in the functions of the individual elements.
Differences chain hoist from the cable
The fact that major industries are more commonly used model chain, certainly in their favor.The advantages enjoyed by electric chain hoists are the following:
- reliability.
- High maintainability (enough to replace the damaged item).
- durability.
- high yield capacity.
Rope counterparts, due to the characteristics of the material are not able to compete on a number of criteria with the units, equipped with metal chains.Nevertheless, they have advantages.For example, electric hoist cable has a smaller and less expensive.Such equipment should be used in small warehouses and production facilities.
Mobile and stationary
Almost all current models of electric hoists for vertical lifting can be set to move.For this purpose an additional step installation provided with slide rails on which the movement is carried out.It is not necessary to use a mechanism for horizontal lifting.Mobility, which is endowed with electric hoist, often used for operations in different parts of the room.
Stationary models are designed for vertical lift at one point.Usually it focuses on the preparation of the cargo to move to the next place of logistics procedures.Mounting in this case it is provided with high-strength metal straps or other fixing elements.
Additional equipment
Secondary optsional typically includes security features.A typical representative of such systems is to protect against overheating - when the electric motor is included in peak working phase, the device automatically turns off the power supply to prevent damage.Of course, with this equipment, and assumes a higher amount at which the realized electric hoist.The price may reach 50-60 thousand. On the model in the general assembly.For comparison, the standard counterparts, lacking performance and additional options are available for 10-15 thousand. In addition, the hoist can be equipped with a limit switch for automatic locking cable and emergency button for unplanned stop lifting - in the event of failure to prevent cargo and other hazardous situations.
