It is no secret that any construction activity involves lifting / moving weights. This is also true in relation not only to assembly / disassembly work, but also to the functioning of warehouses, to various production operations, and in general to the performance of many other tasks. Naturally, it is not always possible to get by with the muscular strength of a person alone, because he is clearly unable to work with massive and large-sized objects. To invest in human labor, special devices and mechanisms have been developed that simplify the process of moving goods.
Due to the fact that the area of use of lifting equipment is quite extensive, many devices have been developed that differ from each other in their design parameters and features.To solve a specific problem related to the movement of a certain type of objects, it is necessary to select a special mechanism that is most suitable for this.
Content
The main purpose of this suspension equipment is the lifting and transportation of goods. There are two types of hoists: electrical and mechanical. The latter work by means of manual control and are divided into lever and gear. Gear devices are hung on a hook to a support and the operator controls them from the ground, being in close proximity to the object being moved.Lever samples are also suspended on a support, but the object is lifted by a lever mounted on the hoist body, i.e. the operator must be directly at the machine and near the support.
For electric models, lifting is carried out due to the operation of the electric motor. Usually, electric hoists are mobile (in rare cases, their stationary installation is used, because then it does not allow using the entire production capacity of the device). Electric hoists are mounted on an overhead track made of rails, along which goods are transported not only horizontally, but also vertically.
The main advantages of mechanical hoists include:
The main advantages of electric hoists are:
The disadvantages of mechanical models can be identified:
Electric hoists are also not without certain disadvantages:
They are designed to move large objects on horizontal and inclined planes. These devices are mechanical with exclusively manual control.To transport goods in a horizontal direction, the mechanism is fixed on a vertically mounted support and the load is moved by means of a handle on the body. The carrying capacity of such a device ranges from 0.8 to 5.4 tons, with the entire rope length of 20 meters.
The undoubted advantages of the mounting-traction mechanism include:
Its negative qualities can be called:
These devices are used for vertical lifting of loads. Structurally, they are divided into mechanical and electrical. The former work from the muscular efforts of the operator, their carrying capacity can be from 0.25 to 3 tons, with a working rope length of 10 to 60 meters.
IMPORTANT! By installing additional blocks in the overall working scheme of the mechanism, the load capacity can be increased.
In electric samples, objects are lifted by the operation of an electric motor. Their carrying capacity starts from 200 kilograms, with a maximum working rope length of up to 250 meters.
The advantages of mechanical models include:
The advantages of electrical samples are:
The disadvantages of mechanical winches are:
Electric models have their drawbacks:
These devices are designed exclusively for lifting objects. Their peculiarity lies in the fact that they are always located under the bottom of the load being lifted, and not on top. Jacking devices are divided into bottle (they are also hydraulic) and rack and pinion. In bottle jacks, the object is lifted by extending the piston under oil pressure, which is pumped either by mechanical pumping of a special handle by the operator (for small masses), or through the operation of an electric oil module (for large masses). These devices are capable of lifting objects ranging from 1 to 200 tons. They are used, for the most part, in the field of construction, mechanical engineering, or as part of a hydraulic pipe bender.
Rack models are a rack with teeth, along which the support heel moves with the help of a gear, which is set in motion by rotation of the handle by the operator. The carrying capacity of these samples varies from 3 to 25 tons. The scope of use is very wide - installation / dismantling in construction, car service work, railway construction.
The positive qualities of bottle samples include:
For rack models, the advantages will be:
The disadvantages of bottle jacks include:
For rack jacks, the minuses will be:
Crane equipment is boom, hydraulic and so-called "window cranes". Hydraulic cranes are commonly referred to as "geese". The principle of their operation is that the boom, equipped with a hook, is raised / lowered by means of a hydraulic cylinder driven by the handle. Most often, such models are used at car service stations for the purpose of mounting / dismantling the engine from the engine compartment of the car.
Jib cranes consist of a support base with a wheeled chassis, a swivel boom, a winch equipped with a rope and a hook. The boom provides reach and the ability to move the load some distance from the main base of the crane. This condition is obligatory for unloading / loading on-board vehicles, lifting objects along the facade of various structures, if the crane is installed on the roof.
IMPORTANT! If you lengthen the reach of the boom, then the carrying capacity of the mechanism will decrease.
In order to facilitate the transportation of the crane itself, the boom has a collapsible design and can be decomposed into two separate parts. Thus, the jib crane can be transported by truck.
"Crane in the window" is designed to lift cargo to a given floor along the facade of the building. It is a small-sized design capable of working with objects of small mass. Can be used in construction and manufacturing.
The undoubted advantages of hydraulic models include:
The boom models are characterized by the following advantages:
The faucet-to-window models have the following advantages:
The disadvantages of the considered models of cranes include:
These devices are designed to lift people and goods. It is from the objects being lifted that the distinction among these devices will depend. Lifts can be mast and they are used to lift loads, but platforms are used to lift people (they are correctly called facade lifts or cradles). It is worth noting that the principle of operation for both devices is almost 90% similar.
Mast models are used in production, in construction, when performing repair work. The principle of their operation is to move the bearing base vertically along the support mast. The mast, in turn, is fixed on the facade of the building, its wall or a special support on the industrial site, which provides the entire structure with the appropriate degree of rigidity. Lifting height can be from 3 to 100 meters, with a total load capacity of 500 to 2000 kilograms.
IMPORTANT! Mast models can also be converted to transport people, but this will require their technical modification plus obtaining permits from the competent supervisory authorities.
Working platforms (cradles) are used in the decoration / repair of building facades. Consoles are mounted on the roof of the building and cables are lowered along which the cradle moves vertically. The working cradle is mainly designed to lift the working personnel, therefore it has protective railings. Based on work tasks, the platform can be 2, 4 or 6 meters long. The control panel is located directly in the cradle itself, which adds to the efficiency of control. The load capacity can be up to 630 kilograms, with a lifting height of up to 100 meters.
The main positive qualities of lifts can be called:
Platforms will benefit from:
There are practically no cons of these models.
From the regulatory and technical legislation in force in Russia, the production and operation of the devices in question is regulated by:
On the technical side, the following mandatory requirements are imposed on lifting devices:
Lifting equipment should be properly selected, paying attention to the following main criteria:
This manually operated chain hoist does not need to be connected to a power source, which makes it possible to use it completely autonomously. The load capacity of the unit is 1000 kilograms, therefore it is suitable for use in both household and construction and industrial sectors. The sample is equipped with a locking system, which makes it possible to stop the load during descent / ascent during emergency situations. The recommended cost for retail chains is 8960 rubles.
This hand hoist is made of very durable materials, which allows you to lift objects with a total weight of up to 3000 kilograms. The device is powered by the muscular strength of the operator, the use of third-party power sources is not required. There is a special locking mechanism with which you can quickly and easily fix the load at the desired height. The recommended cost for retail chains is 9300 rubles.
A similar electric hoist sample is supplied without a trolley, however, it is a convenient tool for lifting objects weighing up to 1000 kilograms. A special ballast guarantees a full vertical position of the hook for quick pickup of the transported load. The motor has a power of 1600 W, which allows you to lift the load at a speed of up to 10 meters per minute. As the weight being transported increases, the lifting speed will decrease. The recommended cost for retail chains is 19,800 rubles.
This winch is an easy-to-operate device capable of both vertical and horizontal transportation of goods.The body of the device is made of high-strength aluminum, which effectively protects the working mechanism from damage. It has small dimensions, has a small weight, which guarantees ease of movement and storage. This device is used during installation, repair and construction work. The recommended cost for retail chains is 20,700 rubles.
This electric version of the winch is used for moving/lifting objects weighing up to 250 kilograms. The handle at the grip point has a special coating, which makes it easy to carry. The hook suspension is equipped with a special carabiner, which makes it possible to attach the load with particular reliability. The rope winding speed is 0.08 meters per second. The steel cable is particularly reliable, which eliminates the need for additional extensions. The recommended cost for retail chains is 20,900 rubles.
This electric winch has a specific application purpose and is designed to pull heavy-duty vehicles (ATVs, swamps, all-terrain vehicles) from bogs and swamps.This model will be an excellent choice, because it has all the properties of durability and reliability. The device is characterized by easy operation, does not require very complex maintenance. There is a possibility of work from the battery – 650ССА. The recommended cost for retail chains is 21,500 rubles.
This scissor lift is capable of lifting 2 people up to a height of 6 meters along with a working tool (and other accessories). The total lifting weight is 500 kilograms. The lifting mechanism is based on a hydraulic system. The model is of high build quality, and all elements are made of reinforced metal. The control is carried out by means of a remote control, which is very convenient when working at height. The recommended cost for retail chains is 363,000 rubles.
This telescopic lift can accommodate up to two people and lift them to a height of up to 8 meters along with working accessories.The work is carried out by means of a hydraulic drive, and the two-mast design made it possible to increase the load capacity to 700 kilograms. There is an emergency descent and shutdown function, which provides for safe operation. The wheels have a black molded rubber tread, and they allow you to withstand heavy loads while ensuring safe movement of the platform. The recommended cost for retail chains is 383,000 rubles.
This self-propelled scissor lift will be very convenient in the implementation of repair, finishing and construction work. The lifting system is very simple and based on hydraulics. The design is reliable, the presence of a large platform, and allows you to work at height without any problems. It is possible to move independently when folded, which qualitatively simplifies work on large areas. It has strong sides and outriggers for stability. The recommended cost for retail chains is 860,000 rubles.
The analysis of the market of the devices under consideration found that the price of devices, even from the budget segment, is extremely expensive. Therefore, most professionals recommend purchasing this equipment only in trusted stores, while simultaneously requiring a certificate from the seller for the goods. This condition is necessary because lifts are classified by Russian legislation as objects of increased danger.