RU2056498C1 - Silo tower - Google Patents

Abstract

FIELD: keeping free flowing materials. SUBSTANCE: silo tower for keeping free flowing materials includes multi-deck frame comprising vertical stands and ring frame supports, wall-type enclosure of sheets attached to the frame, horizontal joint of the sheets is placed in the area of ring frame supports. Upper edges of the sheets of wall-type enclosure are attached to ring frame supports rigidly. Lower edges of the sheets are attached through vertical ring gap using hold-down members. EFFECT: high technological efficiency. 9 dwg

Description

 The invention relates to the field of construction, specifically to the construction of containers for storing bulk products and materials, and can be used in the construction of granaries, for storing various granular products and materials, etc. goals.

 A repository of bulk materials is known, including wall barriers in the form of circular-shaped panels in plan with C-shaped profile elements forming vertical racks and rod elements of an annular bandage connecting vertical racks when they coincide.

 The disadvantage of this storage is the complexity of the design, requiring the manufacture of special support elements with threading in the core elements of the ring bandages. In addition, it is doubtful the operability of the structures of the indicated storage under the action of wind load with an unfilled structure due to the low bending stiffness in the annular direction.

 Also known is the silo design adopted for the prototype (US patent N 4202147, class 52-245), including wall elements in the form of sheets connected to vertical posts and horizontal ring-shaped elements of frames.

 The disadvantage of this design is the presence of a rigid connection of the ring frames with both abutting edges of the sheet elements, as a result of which the sheets of the wall fence, as well as the vertical posts, absorb the total vertical compressive load from all overlying tiers of the wall fence. This leads to the fact that the thickness of the sheets of the wall fence necessary for the perception of this load increases significantly depending on the depth from the top of the backfill, and the main factor determining the thickness of the sheets in this case, as a rule, is not the strength of the shell of the wall fence, but its stability.

 A silo is proposed, including a multi-tier frame, consisting of vertical racks and ring frames with a sheet wall guard attached to the frame, the horizontal joint of which is located in the zone of the ring frames, the upper edges of the wall fence sheets are rigidly attached to the ring frames and the lower edges are joined to the frames vertical annular clearance by means of clamping elements.

h_я

e^-λfZв^/p-e

, где h_я z_н z_в высота яруса;
z_н и z_в глубина засыпки на уровне низа и верха яруса соответственно.The rigid attachment to the ring frames of only the upper edges of the sheets of the wall fence and the movable abutment to the frames of the lower edges of these sheets with the clamping element, when the sheets are attached to the vertical posts, ensures independent operation of individual tiers of the sheets under the action of the load from the friction applied within the tier without transmission total effort on the underlying tiers of the sheet. In this case, the vertical compressive force for each tier is determined by the formula:
N _i = γp

h _i

e- ^λfZ in ^{/ p} -e

where h _i z _n z _{in the} height of the tier;
z _n and z _{in the} depth of the backfill at the level of the bottom and top of the tier, respectively.

P is the hydraulic radius of the cross section of the silo;
λ lateral pressure coefficient of bulk material;
f the coefficient of friction of the bulk material against the wall;
e is the base of the natural logarithm.

 Due to the proposed attachment of sheets to the frame elements, vertical compressive forces that determine the load-bearing capacity of the silo shell are perceived mainly by vertical struts. In this case, the sheath sheets work when the silo is filled for ring tension, and when empty, for ring compression and bending, together with frames. This makes it possible to use sheets of significantly smaller thickness in the silo shell than, for example, in known silo solutions with smooth sheet walls.

 In FIG. 1 shows a silo, a vertical section (right side of the drawing); in FIG. 2 the same, a horizontal section at the level of the ring frame; figure 3 section aa in figure 1; in Fig.4 node I in Fig.1; in Fig.5 section BB in Fig. 4; in FIG. 6 section BB in FIG. 2; in Fig.7 section GG in Fig.6; on Fig option node I in figure 1; Fig.9 installation method of the proposed silo.

 The silo for storage of bulk materials contains a multi-tier frame, consisting of vertical posts 1 and ring frames 2, attached to the frame of the wall fence of sheets 3, the horizontal joint of which is located in the area of the ring frames 2. At the same time, the upper edges of 4 sheets of the wall fence are attached to the ring frames rigidly, and their lower edges 5 are attached to the profiles of the frames 2 with a vertical annular gap 6 by means of clamping elements 7, rigidly attached to the ring frames.

 The vertical junction of the sheets of the wall fencing can be performed, for example, on bolts with flanges 8 of the abutting edges through gaskets 9 with double-sided plates 10, as shown in FIG. 3.

 The joint of the ring frames can be performed, for example, on bolts using linings 11, sheet gaskets 12 and ring gaskets 13 with a thickness of 0.1 mm greater than the thickness of the sheets 3 of the wall fence, the latter can be installed, for example, in oval holes on the lower edge 5 sheets of fencing to ensure vertical movements of the lower edge in the annular gap 6 (Fig.6 and 7).

 The joint of the vertical struts 1 of the frame can be performed, for example, on the flanges using bolts 14 (figure 4).

 It is possible to abut the upper edge of 4 sheets 3 of the wall fence to the frame both from the outside (Fig. 4) and from the inside of the lower inner shelf 15 of the frame (Fig. 8).

 To eliminate water leaks, sealed fasteners are used, as well as setting standard fasteners and butt pads using sealing mastics or gaskets (not shown in the drawings).

 Installation of the inventive silo for the storage of bulk materials is carried out, for example, as follows (see figure 9).

 In a special mounting jig 16 on the prepared foundation 17, the upper tier of the shell with the frame and the roof of the silo are mounted. Then, with the help of the elevator 18, the finished tier with the roof is raised to a height equal to the height of this tier, after which the next tier is mounted in the same way as the previous one, while simultaneously attaching the upper edge of the lower tier sheets to the lower frame of the upper tier. Repeat this cycle until the installation of the silo is completed, with the help of a hoist lower the finished silo onto the foundation; the mounting jig along with the elevator is moved to a new position and the entire cycle is repeated as many times as necessary to mount silos.

 The proposed silo for storing bulk products allows you to use thinner sheets as a wall fence due to the fact that the fence sheets work mainly on the perception of tensile ring forces from the internal pressure of the bulk material, and the compressive forces from the friction forces of the grain perceive vertical racks, while the compression ring forces when acting on an empty silo, for example, a wind load, are mainly perceived by ring frames. The described work of the designs of the inventive silo is ensured by the presence of an annular vertical gap in the abutment of the lower edge of the sheets of each tier to the ring frames.

Claims (1)

 SILOS FOR STORAGE OF BULK MATERIALS, including a multi-tier frame, consisting of vertical racks and ring frames, and a wall fencing of sheets attached to the frame, the upper edges of which are rigidly attached to the ring frames, characterized in that the lower edges of the sheets are attached to the annular ring frames clearance with clamping elements.

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