Lift
Modern lifts by type are divided into:
- Foot. They are capable of lifting heavy loads weighing up to 2 tons to a height of 8 meters.
- Telescopic. Their advantages include: low weight and compactness. These devices are capable of lifting loads to a working height of up to 150 kg.
They, in turn, are divided into:
- self-propelled;
- non-self-propelled.
When choosing a lift, it is worth considering several factors: their dimensions, load capacity, scope.
To make a lift on your own, prepare the materials and a preliminary drawing. For its construction we need:
- winch, which can be made from a drum and a cable;
- pipes;
- electric drive.
The advantages of construction hoists include:
- maneuverability;
- high load capacity;
- safety;
- convenience in operation.
Best Answers
Kainov Evgeny:
It has a self-elevation mechanism. Parts of the crane are only substituted, and it pushes itself up.
I am:
I can tell you a joke that happened in Ukraine, in which city I don’t know exactly. In general, they installed a crane and began building a house, what does the house have to be, how to say .... well, along the perimeter, and in the center it turns out such a closed children's playground, which can only be accessed directly from the house or from a helicopter))). So, what did these Ukrainians stir up. They built a house to build, but this same crane was just placed in the middle of this house.
PS: I don’t know what they, fools, did next, but I would like to.
mouse Tanya:
Come, we are building a new microdistrict, you can take a look...although lately I'm more interested in why they fall on neighboring houses
BorodaQ:
The crane is located in accordance with the established plan, which determines the areas of the crane. First, the site is leveled, the rails are installed with the help of a truck crane, the construction crane is delivered to the site using an autotractor on pneumatic wheels. The first (lowest) section is somewhat wider than all the others. With the help of its own winch, the second section inside the first rises almost to the top of the last and is fixed there. The third section is placed in the resulting free space and fastened with bolts to the bottom of the second and rises to its place. In this sequence, the entire crane is assembled. I was struck by the pitching during the operation of the crane. It was necessary to install an additional floodlight during the installation of formwork weighing more than 10 tons, the amplitude of oscillations exceeded 1 meter. Although from the outside it is almost imperceptible.
Viktor Biturin:
I can say that the length of the crane boom is chosen depending on the load capacity! The greater the load capacity, the smaller the boom reach!
Andrey Lozovoy:
Expert answers
N@desh@:
Vitaly:
Vertical
Ivanov Ivan:
A tower crane, even disassembled into parts - oversized cargo, is transported with flashing lights and cops escorting, slowing down the general movement ...
AIDS:
Dismantled and transported.
M.G.T.:
Dismantled and transported piece by piece
Bell A Morr:
the little ones go. large ones are partially dismantled and transported. huge ones are disassembled into parts and also transported. it's troublesome.
Iron Balls:
They are not transported in their entirety, they are disassembled and assembled at construction sites, but the machine is disassembled and assembled by a crane) then, as usual, they were taken to a truck. And some are taken directly to the metal collection point)))
User deleted:
disassemble the arrow, drive it onto the conveyor and forward
4. Construction and installation works Supply of goods to the openings of floors.
Directions.
Submission
cargo into openings (hatches) of floors and
coatings should be made according to
specially designed project. At
supply of cargo to the openings (hatches) of floors
and covers, it is necessary to lower the load and
raise the hook with slings at a minimum
speed without swinging.
Distance
between the edge of the opening (hatch) and the load (or
hook block if it is lowered
in the opening (hatch)) should provide
free movement of cargo (or hook
clips) through the opening and should not be
less
0.5 m
In exceptional
cases, it is allowed to reduce this
escort distance
through the opening (hatch) with the help of a guy line.
let down
to the opening (hatch) the load must be calmed
from rocking and only after that
lowered into the opening. When lifting the sling through
opening (hatch) all hooks must be hung
on the detachable link, and the sling should
be guided from below with a hemp
rope; hemp rope is unhooked from
sling after sling will
removed from the opening (hatch). Slinger
can approach the load (move away from the load),
when the load is lowered (raised) on
height no more
1 m from the level
surface (platform) where
slinger.
At
places of acceptance (or dispatch) of submitted
(or removed) through the opening (hatch) of goods,
as well as at the opening in the floor (covering)
should be equipped with lighting
alarm (luminous inscriptions),
warning about the presence of the cargo
above the opening (hatch), and about lowering
it through the opening (hatch), as well as inscriptions and
signs prohibiting the presence of people
under the transported load.
Light signaling
must be positioned so that
could be damaged by moving
load or lifting equipment.
Between the crane operator
and a slinger outside
visibility of the crane operator should be
radio connection established.
opening
(hatch) through which the supply is made
cargo, must be permanently guarded
height (distance from the level of the working
places to the lowest point
top
horizontal element) not less than
1200 mm with
with a solid board on the bottom on
height not less than
100 mm.
The fence must meet the requirements
GOST 12.4.059-89.
At
supply of cargo to the openings (hatches) through
inter-farm space or through
several overlaps when positioned
openings (hatches) directly to each other
above the other, a shaft with smooth
walls or lowering the load must
be made with the obligatory
escort. Examples of cargo delivery
through openings (hatches) are presented on
figure
28.
