RU220721U1 - SPACER FOR ANCHOR - Google Patents

Abstract

The utility model relates to spacer sleeves for an anchor, including a hollow body having spacer segments formed by longitudinal slots forming a first spacer zone, the body has a first row of transverse slots and a second row of transverse slots that divide the sleeve into two parts, the second row The transverse slots are located with rotation along the axis of symmetry of the sleeve relative to the first row and can be used for fastening heavy (metal) structures and equipment to various bases (concrete, stone, brick, hollow brick, foam concrete). According to the utility model, each slot has a U-shaped section, which is located at the far edge of the slot relative to the other row, and the distance between the rows of transverse slots is selected to ensure the possibility of forming a second spacer zone, which is formed due to additional deformation of the sleeve at the junction of its two parts when they moving towards each other while attaching the anchor. The achieved technical result is increasing the reliability of anchor fastening.

Description

The utility model relates to spacer sleeves for an anchor, including a hollow body having spacer segments formed by longitudinal slots forming a first spacer zone, the body has a first row of transverse slots and a second row of transverse slots that divide the sleeve into two parts, the second row The transverse slots are located with a rotation along the axis of symmetry of the sleeve relative to the first row and can be used for fastening heavy (metal) structures and equipment to various bases (concrete, stone, brick, hollow brick, foam concrete).

Currently, there are many types of metal anchors for fastening in solid foundations. All of them are divided according to their use in a specific base: either foam concrete, or concrete with cracks, or concrete without cracks, brick or solid or hollow.

A solution is known from the prior art, disclosed in the information source https://krepeg-optom.ru/catalog/ankery-metallicheskie/anker_fisher_vtulochnyy_s_gaykoy_fsa_b/ (D1).

According to information from the Internet Archive

http://web.archive.org/web/20211203135453/https://krepeg-optom.ru/catalog/ankery-metallicheskie/anker_fisher_vtulochnyy_s_gaykoy_fsa_b/

dated 12/03/2021, the above-mentioned information about the known technical solution was in the electronic environment, that is, until the priority date of the utility model - 05/19/2023. Consequently, this source of information can be considered as a publicly available source of information on the priority date, which can be opposed in relation to the utility model claim.

This device is the closest in technical essence to the declared utility model and is taken as a prototype for the proposed utility model.

It describes a spacer sleeve for an anchor, including a hollow body having spacer segments formed by longitudinal slots defining a first spacer zone, the body having a first row of transverse slots and a second row of transverse slots that divide the sleeve into two parts, the second row of transverse slots the slots are located with rotation along the axis of symmetry of the liner relative to the first row.

The disadvantage of this device is that although this sleeve has a number of transverse slots, it still has one spacer zone, which is not enough for attaching the anchor.

Disclosure of utility model

Based on this original observation, the present utility model primarily aims to provide a spacer sleeve for an anchor, including a hollow body having spacer segments formed by longitudinal slots defining a first spacer zone, the body having a first row of transverse slots and a second row of transverse slots , which divide the sleeve into two parts, and the second row of transverse slots is located with a rotation along the axis of symmetry of the sleeve relative to the first row, which makes it possible to at least smooth out the above-mentioned drawback, namely, to ensure increased reliability of anchor fastening, which is the technical task of this utility model .

To achieve this goal, each slot has a U-shaped section, which is located at the far edge of the slot relative to the other row, and the distance between the rows of transverse slots is selected to ensure the possibility of forming a second spacer zone, which is formed due to additional deformation of the sleeve at the junction of its two parts when their movement towards each other during anchor fastening.

Thanks to such advantageous characteristics, it becomes possible to additionally fasten the anchor due to the fact that when installing the anchor, additional deformation is formed, which secures the sleeve in a different place than the first. That is, if the reliability of fastening in the first spacer zone is violated, the second continues to ensure the reliability of fastening. These essential features were selected experimentally so that the additional deformation manifested itself most clearly. It was experimentally established that the U-shaped section changes the curvature of the surface of the sleeve when it is deformed in the desired way so that additional deformation of the sleeve is formed with the formation of a second spacer zone.

There is a possible embodiment of the utility model, in which each row of transverse slots includes three identical slots.

Thanks to this advantageous characteristic, it becomes possible to provide the simplest and most effective version of the utility model.

There is also a possible embodiment of the utility model, in which the distance between the rows of transverse slots is in the range of 20-40% of the sleeve diameter.

Thanks to this advantageous characteristic, it becomes possible to provide a specific distance between the rows. When the distance between the rows of transverse slots is less than 20% of the sleeve diameter, the effect of the formation of a second spacer zone becomes not clearly expressed. When the distance between the rows of transverse slots is more than 40% of the sleeve diameter, the effect of the formation of a second spacer zone also becomes not clearly expressed.

There is also a possible embodiment of the utility model, in which the second spacer zone is located at a distance that is no less than the length of the first spacer zone

Thanks to this advantageous characteristic, it becomes possible to ensure reliable fastening in a situation where, during expansion in soft foam concrete, the first zone destroys (deforms) the base, and the second zone does not destroy the same deformed base, but creates a new deformation.

The set of essential features of the proposed utility model is unknown from the prior art for devices of similar purposes, which allows us to conclude that it meets the “novelty” criterion for the utility model.

Brief description of drawings

Other distinctive features and advantages of the utility model clearly emerge from the description given below for illustrative purposes and not being limiting, with reference to the accompanying drawings, in which:

fig. 1 shows the device of a spacer sleeve for an anchor, according to the utility model,

fig. 2 shows the device of a spacer sleeve for an anchor in the embodiment with a bolt, according to the utility model,

fig. 3 shows the device of a spacer sleeve for an anchor in the embodiment with a nut, according to the utility model,

fig. 4 shows the appearance of the spacer sleeve for the anchor after installation in a state of deformation, according to the utility model,

fig. 5 shows the appearance of the spacer sleeve for the anchor before and after testing, according to the utility model,

fig. 6 shows the appearance of the spacer sleeve for the anchor, according to the third experimental comparative specimen,

fig. 7 shows the appearance of a spacer sleeve for an anchor, according to the prototype.

The figures indicate:

1 - hollow body,

2 - spacer segments,

3 - slots of the first spacer zone,

4 - first spacer zone,

5 - second spacer zone,

6 - first row of transverse slots of the second spacer zone,

7 - second row of transverse slots of the second spacer zone,

8 - cone nut,

9 - pin with cone,

10 - bolt,

11 - fixing protrusions,

12 - place of sleeve deformation in the second spacer zone.

According to FIG. 1-4, a spacer sleeve for an anchor includes a hollow body 1 having spacer segments 2 formed by longitudinal slots 3 forming a first spacer zone 4. The body has a first row of transverse slots 6 and a second row of transverse slots 7, which divide the sleeve into two parts , and the second row of transverse slots 7 is located with rotation along the axis of symmetry of the sleeve relative to the first row 6.

Each slot has a U-shaped section, which is located at the far edge of the slot relative to the other row, and the distance between the rows of transverse slots is selected to ensure the possibility of forming a second spacer zone, which is formed due to additional deformation of the sleeve at the junction of its two parts when they move in the direction to each other while attaching the anchor.

Advantageously, each row of transverse slots 6 and 7 includes three identical slots, and the distance between the rows of transverse slots is in the range of 20-40% of the sleeve diameter.

Advantageously, the second spacer zone 5 is located at a distance that is not less than the length of the first spacer zone 4.

The holes in the spacer zone 2 are made at a distance from the main spacer zone equal to the cell size of the hollow brick, which allows them to be fixed to the edges of the hollow brick for reliable fastening.

The sleeve has a round cross-section and fits tightly to the walls of the hole along the entire length of the anchor, which does not allow the connection to become loose under dynamic loads.

Implementation of a utility model

The spacer sleeve for the anchor is used as follows (An example of use for several elements at once, which does not limit the use of the utility model, is given).

To install the sleeve, bolts 10 are used together with a cone nut 8 or a stud with a cone 9 with nuts of various types. The spacer segments create an effective first spacer zone 4 of the sleeve. Due to the presence of the main transverse slots of the second spacer zone in the sleeve, a second spacer zone 5 is formed. The fixing protrusions 11 serve as a fixing element of the anchor in the hole before installation.

When tightening the bolt, the sleeve simultaneously moves apart the spacer segments 2 of the first spacer zone 4, and deforms the sleeve in the area of the second spacer zone 5.

Industrial applicability

The spacer sleeve for the anchor can be implemented by a specialist in practice and, when implemented, ensures the implementation of the stated purpose. The possibility of implementation in practice follows from the fact that for each feature included in the formula of a utility model based on the description, a material equivalent is known, which allows us to conclude that it meets the “industrial applicability” criterion for a utility model and the “completeness of disclosure” criterion for a utility model.

In accordance with the proposed solution, the applicants manufactured a prototype of a spacer sleeve for an anchor. A spacer sleeve with a diameter of 10 mm with an M8 conical pin and an M8 nut was used.

Comparative tests of the proposed utility model were carried out (see Fig. 5), as well as a prototype, indicated in the table as “Prototype” (see Fig. 7), and a third sample (see Fig. 6), indicated in the table as “ China f10". A concrete block mm 1200×1200×30 B20 (Table 1) and a metal pipe F10 (Table 2) were chosen as the base material.

Test results (pullout forces). Table 1

No. Sample Hole diameter, (mm) Hole depth, (mm) Anchoring depth, (mm) Tightening torque (Nm) Installation location Load limit value, (kN) Nature of destruction 1 Utility model 10 100 90 thirty Floor 20.26 Pull 2 China f10 10 100 90 thirty Floor 15.12 Pull 3 Prototype 10 100 90 thirty Floor 12.61 Pull

Test results (formation of the second thrust on the liner). Table 2

No. Sample Hole diameter, (mm) Tightening torque (Nm) Installation location Load limit value, (kN) Deformation 1 Utility model 10 thirty A tube 20.26 compression 2 China f10 10 thirty A tube 15.12 shift 3 Prototype 10 thirty A tube 12.61 No

Thus, tests of the prototype showed that:

due to the second spacer zone, the pullout force increases by 1.5 times,

due to the presence of two spacer zones, the sleeve in the anchor is used as a critical fastener (for high loads);

the design of the sleeve allows you to secure an object with access from one side (wall panel, beam or bracket);

the design of the sleeve allows it to be used as a universal fastener in all types of solid bases, including foam concrete and hollow brick;

The proposed sleeve allows it to be used as a spacer element for various types of anchors, which makes the use of the proposed sleeve universal.

All this ultimately ensures the achievement of the achieved technical result - increasing the reliability of anchor fastening.

Additional achieved technical result:

the versatility of its use in any dense base.

Claims (4)

1. A spacer sleeve for an anchor, including a hollow body having spacer segments formed by longitudinal slots forming a first spacer zone, the body having a first row of transverse slots and a second row of transverse slots that divide the sleeve into two parts, the second row of transverse slots located with rotation along the axis of symmetry of the liner relative to the first row, characterized in that each slot has a U-shaped section, which is located at the far edge of the slot relative to the other row, and the distance between the rows of transverse slots is selected to ensure the possibility of forming a second spacer zone, which is formed due to additional deformation of the sleeve at the junction of its two parts when they move in the direction to each other while attaching the anchor. 2. A spacer sleeve for an anchor according to claim 1, characterized in that each row of transverse slots includes three identical slots. 3. Spacer sleeve for an anchor according to claim 1, characterized in that the distance between the rows of transverse slots is in the range of 20-40% of the diameter of the sleeve. 4. The spacer sleeve for the anchor according to claim 1, characterized in that the second spacer zone is located at a distance that is not less than the length of the first spacer zone.