The present invention generally relates to container-like cases,
to tanks and the like built both according to international unified specifications,
and according to other criteria - shelter type - intended to the transport of
goods or to other uses, or even habitable, of the movable or emergency house type,
and more particularly it relates to a built-in system for the self-lifting of
such generic tanks that allows them to be easily mobilized (shifted) and spatially
positioned to a very high precision.
As is known, with the spreading of the use of such containers, especially
those having characteristics answering national and international unification
specifications, one has had to solve numerous problems connected, on a hand, with
the unification exigencies themselves and, on the other hand, with the effort to
exploit the actual and potential advantages, that the use of the same was able
to afford, at the best.
For example, such tanks have been endowed with as much unified corner
blocks or fittings and have the possibility to be mobilized, i.e. loaded, unloaded,
displaced, etc. only by means of great equipments external thereto, such as cranes,
loader bridges, great lifts and the like.
A first problem that has been encountered in the attempt to improve
such tank cases consists in the difficulty to apply mechanical or hydraulic legs,
the so-called "rams", remaining at the same time within the respective prescribed
The second problem the solution whereof has been hitherto missing
is that of the practical impossibility of the shifting, out of the dragging, which
requires high forces, or, anyhow, the employment of not handy contrivances, once
the case has been layed down and the necessity for arranging it into position or
anyhow to displace it presents itself.
Therefore, a first object that the present invention purposes is
to realize a tank case of the type mentioned above, incorporating a system of mechanical
or hydraulic legs to allow the self-lifting of the tank, independently of any
external apparatus, so as to facilitate the loading and unloading operations on
motor vehicles, railway flatcars and the like.
A further object of the invention is to realize a tank case as already
mentioned, in which the self-lifting legs also allow the shifting, or, at least,
the precision arrangement of the position of the tank itself with respect to the
rest surface, for example on the motor vehicle or on the railway flatcar, with
the force of one or two persons or, anyhow, with a manual force and without external
Further particularities and advantages of the present invention will
turn out to be apparent with the continuing of the disclosure with reference to
the annexed drawings in which the preferred embodiments are represented as a matter
of illustration and not of limitation.
In the drawings:
- Figure 1a shows a perspective schematic view of a tank prearranged according
to the present invention for the mounting of the corner self-lifting legs;
- Figure 1 shows a partial side vertical view of a tank according to the
present invention, taken in the sense of the arrow A of Figure
- Figure 1b shows an alternative way to realize the foot of the self-lifting
- Figure 2 shows a top view of the detail of one edge of the tank, taken
along the section line B-B of Figure 1;
- Figures 3a to 3e vertically show the subsequent stages of the
loading of a tank from the ground up to the loading platform on a motor vehicle;
- Figures 4a to 4c very schematically show, from above, various
operations of precision arrangement of a tank into position.
With reference now to the drawings and particularly to Figure
1a, it is seen that the container, tank or the like, 1, of the parallelepipedon
shape prescribed by the specifications, has four rooms 2 made in its longitudinal
walls, at the four vertical corners of the parallelepipedon, to accommodate, during
the transport, the piling, the stocking, etc., as many mechanical or hydraulic
legs (ram = jacks) 3 for the self-lifting.
With reference to Figures 1 and 2, it is seen that
the mechanical or hydraulic (oleodynamical) legs 3 are flagwise hinged on the axis
11 by means of at least two articulation arms 12 and 13, so
that the legs 3 are able to rotate from the recessed rest position, represented
with a solid line in Figures 1 and 2, to the extended or working
position represented with dashed lines in the same figures.
The axes 11 are connected with the four vertically arranged
pairs of corner fittings 4.
It is desired to precisely state that the legs 3 not necessarily
are to be four, arranged at the vertical edges of the tank, but that they can be
in a lower or in a higher number to fulfill particular exigencies: moreover, they
can also be removable.
With the reference numeral 5 suitable members are indicated
for locking the legs 3 to the tank case 1, when they are a permanent part thereof,
fit for maintaining the legs within the contours of the prescribed sizes, or for
fixing them in an external or deployed position.
At the lower extremities of the legs 3 support feet 6 of a suitable
shape and size (round, square, shaped, and the like) are provided, which can also
have the shape of rotatable rollers or wheels 6a, as in Figure
The axial articulated joint elements 7 that radius, by means
of two bearings, preferably ball bearings (not shown), the piston 8 of the
self-lifting legs 3 with the vertical axis 9 of the feet
6 or of the wheels 6a are very important to the ends of the present
invention. The bearings mentioned above are to be parallel and eccentric to each
As will be seen, such axial articulated joint elements
7 are essential,in combination with the flag (or brandishing) movements
of the self-lifting legs 3, to render the shifting of the tanks by the push
of a man possible and also handy.
A possible oleodynamical box 10 is provided which can also
be internal to the tank, or external to the same to serve more tanks.
With reference to Figures 3a to 3e, a tank according
to the present invention is seen in Figure 3a
in its ground resting position,
with the legs in their recessed position. In Figure 3b, in a second stage,
the legs are rotated in an external position, in a position of prearrangement
and self-lifting, for instance on a motor vehicle equipped for the transport of
unified containers. In Figure 3c, the tank is self-lifted. In the subsequent
stage, Figure 3d, the tank is easily centred by the push of a man, that
acts upon the corner fittings, upon the anchorage connections provided on the
motor vehicle, which inserts itself under the tank with its loading platform. Finally,
the tank anchored on the motor vehicle with its legs recessed in its external
shape, ready to be transported, is seen in Figure 3e.
With reference to Figures 4a to 4c the obviously repeatable
and combinable possibilities of horizontal shifting by the push of a man in the
360°, also on not leveled grounds, are observed.
It is desired to observe that the use of roller feet or wheels, in
addition to afford the possibility of an actual shifting on the ground, also imparts
a greater flexibility of position arrangement, also involving a lower stress of
the legs themselves.
As regards the positioning of the self-lifting legs, it is timely
to precisely state that at least two of such legs are to be arranged not on a front
side, but on the lateral ones, to allow the use of the relevant tank strictly
abutted to another analogous tank or abutted to the cab of the transport truck,
without leaving empty intermediate rooms.
As a final observation, it is finally desired to point out that the
axial articulated joints provided between the legs and the feet can also be inserted
into the arms of the flag hinges of the self-lifting legs.
The preferred embodiments have been disclosed and variants have been
suggested in the above, but it is to be understood that other variants and modifications
in the particulars, in the construction details and in the arrangements can be
made by those who are skilled in the art, without so departing from the scope of
protection of the present invention.