SU1214842A1 - Rigging anchor - Google Patents

Description

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The invention relates to construction and relates to the construction of anchors for braces used to fasten various structures during front-mounting operations to the ground.

The purpose of the invention is to increase the carrying capacity of the anchor.

Figure 1 shows the proposed anchor, a side view (a variant for fastening a hinge to the hinges through metal bands and crossmembers; FIG. 2 is the same, top view on FIG. 3 and 4 is the same, variants for fastening the haul in the anchor.

The anchor consists of a thin plate 1, to which the longitudinal ribs 2 are welded facing upwards. Vertical earrings 4 are attached to the latter by means of cylindrical hinges 3,

The hinges 3 are trpzonal axes, pairing together the longitudinal ribs 2 in pairs. By means of other hinges 5, also made in the form of horizontal axes, the earrings A are connected to the ends of the inclined rods 6 and are pairwise connected to each other. The other ends of the rods 6 are welded to the strips 7 that fall into the folded edge 8 of the plates 1, and the edge 8 is welded to the return surfaces of the strips 8, the Plates 1 with the ribs 2, the earrings 4, the rods 6 and the hinges 3 and 5 constitute the support element, which It is mounted on a base, for example, a concrete platform, a floor, a foundation, and 1, and is attached to it across its entire bottom surface by gluing. A take off is attached to the support element and is tightened after it is fixed to the base.

The fastening of the pulling to the support element can be carried out through the hinges 5 (the latter encompass the metal tapes 9 attached to the crossbar 10 having an opening I for the pulling)

Similarly, the pulling may be fastened to fingers 12, a unit of 15 rod 6 in their intermediate part.

In the first case, the pulling force is transmitted to the hinges 5, to the earrings 4 and to the rods 6. Since the plate 1 is thin-walled and relatively non-rigid, the connection of the rods. 6 and

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the strip 7 with the plate 1 is close to the hinge. As a consequence of the efforts in the delay on the rod 6 are szhayuyutsche, and

5 earrings 4 - stretching efforts.

The forces from the earrings 4, directed perpendicularly to the plate t, are distributed evenly between the ribs 2 and cause tearing forces

0 plates 1 from the base. Due to the uniform distribution of the ribs 2 over the plate surface (the distances between the ribs 2 are chosen taking into account the rigidity of the plate 1 than

5 it is smaller, the closer the ribs are to one another, the uniform distribution of the tearing stresses over the entire surface of the plate 1 (with the exception of the surface section at the bent edge 8) is ensured.

The forces acting on the rods 6 are transmitted through the edge 8 to the plate 1, causing a shear stress from the horizontal talc component of these forces in the glue joint (these stresses are also uniformly distributed over the entire area of the glue line) and compressive stress from the vertical. operating component

0 within a limited area under the slats 7.

Such a distribution of efforts, namely, their high degree of uniformity over the entire area of the glue line without noticeable concentrations in any area, is favorable for the glue line, since it allows you to dispense with the minimum area of the plate 1 at its small thickness and thus

 reduce the size and weight of the entire anchor, ..

In addition, it allows to achieve

very large efforts of the anchor root and thus ensure a very reliable fastening of the heel to any

sturdy bearing surfaces like ba 5

current

The option of fastening the hem to the fingers 12 (FIG. 3J is characterized by a decrease in the effort in the earrings 4 behind).

This is due to a decrease in the moment from the effort P in the hitch relative to the support bars 7 and, consequently, to a lesser amount of effort to pull the anchor from the base. However, with this rod

5 6 on "1 to work on flex and require an increase in the cross-section. In addition, the axis of the finger 12 cannot be applied to the middle of the rod 6,

five

since at large angles of force P to the horizon, the direction of the vertical component of the force in the strips 7 changes, they begin to work for separation from plate 1.

The variant of the anchor (Fig. 4) is characterized by the arrangement of the earrings 4 directed downwards from the hinge 3 and the application of force P from the hinge to the hinges 5 located in the lower part of the earrings 4, and is most favorable from the point of view of the forces in the elements. The earrings 4 work in compression and the stresses in the ribs 2 decrease | due to a greater distance from the bars to the hinges 3 than to the hinges 5. The disadvantage of the variant is an increase in the sizes of the ribs 2, as their height increases by the size of the earrings 4, the length of which depends on the maximum possible angle between /

five

//

. 2

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do force P and horizontal. The number of ribs 2 is determined by the area of plate 1 and its rigidity, and with a small area and a large

5 stiffness can be limited

raimb with two ribs, as a result of which there is no need to use the belts 9 and the cross member 10, since the delay can be attached directly to the hinges 5 or to the fingers 12.

Conversely, for large sizes (and they depend on the force in the draw) and low rigidity of the plate 1, a more complex system of tapes 9 and crossbars 10 may be required to transfer the force from the draw. However, the distribution of forces in the glue line remains uniform, which guarantees the reliability of fastening the anchor to the base.

ig, 3

Editor T. Mitejko

Sos / gevitel G.Gavrihtsuk

Tehred M. Nadi Corrector E, Roshko

865/43 Circulation 642 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Z-ZZ, Raushsk nab., 4/5

Branch ShSh Patent, Uzhgorod, st. Project, 4

CO. if

Claims (1)

ANCHOR FOR A HOSE, including a support element mounted on a base and attached to it along the entire lower surface, and a device for attaching a guy, characterized in that, in order to increase the bearing capacity of the anchor, the support element is made in the form of a plate with facing upwards by longitudinal ribs in a transverse edge bent upwards, of inclined rods, _to plate ribs oriented parallel to the plane and connected by lower ends with its curved edge, and vertical earrings with hinges at the ends, each earring by means of corresponding hinges, one end is attached to the upper end of the rod and the other to the edge of the plate, and the device for fastening the guy is attached either to the hinges connecting the earrings to the rods, or to the rods. SU, „, 1214842 FIG. 1