RU2398073C1 - Lock for joining tongue-and-groove elements - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: technical solution relates to the field of erecting structures with application of metal groove, and more specifically - to design of locks used to join tongue-and-groove elements. In lock for connection of tongue-and-groove elements, including race and connecting cam brought into cavity of race, race is arranged from metal thick-walled pipe with longitudinal slot along generatrix, where strip is entered, which bears cam made of square or rectangular solid or hollow rolled section with provision of cam adjacency to inner wall of metal thick-walled pipe, at least with two faces, at the same time according metal strips are welded both to cam and race along longitudinal axis for the whole length of lock, besides ratio of strip b thickness to width of slot B is within the range from 0.65 to 0.9, and ratio of size of cam A side perpendicular to axis of welded strip, to width of slot B is in within the range from 1.7 to 2.6. At the same time in cross section it has angular shape formed by strip bent at the angle α, equal to 60-180 degrees along radius, which is not less than strip thickness.

EFFECT: increased strength, bearing capacity and reliability of lock, and also increased manufacturability in production together with reduction of its cost.

Description

The proposed technical solution relates to the field of construction of structures using metal sheet piling, and more specifically to the construction of locks for connecting sheet piling elements.

Known welded lock for connecting sheet pile elements (JP, No. 56-33523, class E02D 5/08, 1981), comprising a holder formed by an angular profile welded to the sheet pile element with the edge of one of the shelves, and the second shelf of this corner profile is made with broadening and is at the same time a connecting cam inserted into a second cage formed by the same angular profile welded to another tongue-and-groove element, and the free shelf of the second angular profile is also made with broadening and is simultaneously a connecting cam m, wound, respectively, in the clip of the first sheet pile element.

In this design of the lock, double engagement of the cams is carried out, which increases its metal consumption, and the use of a special shaped angle profile, intended only for the production of welded tongue, significantly increases its cost.

A known lock for connecting sheet pile elements (RU, No. 2103442 C1, IPC E02D 5/08, 01/27/98), comprising a clip formed by an angular profile welded to the sheet pile element with the edge of one of the shelves at an acute angle with an inclination towards the free edge of the console, and a connecting cam inserted into the cavity of the holder, welded to another sheet pile element.

The disadvantage of this lock is its low bearing capacity and low tensile strength.

The closest known is a tongue-and-groove lock (RU, No. 2185476 C1, 07.20.02), made welded from two channels, the shelves of which are facing towards each other and are located with the formation of gaps between them, and connected to one another by one or two stiffeners with the formation of a tongue and groove. The gaps between the shelves of the channels are designed to pass into the grooves of the closing T-shaped element welded to the connected parts of the tongue wall.

The disadvantage of this lock is the technological complexity and high complexity of welded joints, as well as low durability. Another drawback of the lock is that the angle of the shelves of the channel contributes to the “slip” of the locking element from the groove of the lock, which results in its low bearing capacity.

The technical task is to increase the strength, bearing capacity and reliability of the castle, as well as improving the manufacturability and reducing its cost.

This problem is solved by the fact that in the lock for connecting the tongue-and-groove elements, including the holder and the connecting cam brought into the cavity of the holder, the holder is made of a thick-walled metal pipe with a longitudinal groove along the generatrix, into which a strip carrying a cam made of square or rectangular solid or hollow rolling profile with the jaw adjacent to the inner wall of a metal thick-walled pipe with at least two faces, while to the cam and to the cage along the longitudinal axis throughout corresponding metal strips are welded to the length of the lock, and the ratio of the thickness of the strip b to the width of the groove B is in the range from 0.65 to 0.9, and the ratio of the size of the side of the cam A perpendicular to the axis of the welded strip to the width of the groove B is in the range from 1, 7 to 2.6. Moreover, in the cross section, it has an angular shape formed by a strip curved at an angle α equal to 60-180 degrees in radius, not less than the thickness of the strip.

The essence of the technical solution is illustrated by the drawing in figure 1, which shows the connection node of the tongue-and-groove elements by means of this lock.

The lock for connecting the tongue-and-groove elements consists of a cam (male element) 1 made of square or rectangular rolled steel and a holder (female element) 2 made of hot-rolled steel pipe. Metal strips 3 are welded to the cage and cam along the entire length along the axis, which can be bent at an angle α for the construction of sheet pile walls with rotation angles. The clip has a longitudinal groove 4 for strip 3. Weldability of the elements of the lock - without restrictions by any means.

The choice of the above parameters of the groove width and strip thickness is due to the need for jamming (to ensure sealing of the connection) of soil particles falling into the gap.

This design of the lock provides water-tightness and allows you to use it to connect any sheet pile elements in sheet pile walls, including in water-saturated soils, sheet piles and other sheet piles.

The proposed design of the castle allows you to significantly expand the range of its application, provides reliable engagement of the cage and cam, increases the strength characteristics of the castle and significantly reduces the cost of its manufacture. At the same time, the adopted ratios of the geometric parameters of the lock provide a free insertion of the cam into the cage and reliably prevent it from “slipping” out of it with significant loads on the lock.

The technical result of the invention consists in the development of an effective and reliable method of joining sheet pile elements with high strength properties of the locking joint at a low cost of its manufacture.

Claims (2)

1. A lock for connecting tongue-and-groove elements, comprising a cage and a connecting cam inserted into the cavity of the casing, characterized in that the cage is made of a metal thick-walled pipe with a longitudinal groove along the generatrix, into which a strip carrying a cam made of a square or rectangular solid or hollow rolling profile with the jaw adjacent to the inner wall of the metal thick-walled pipe, at least two faces, while the cam and the holder along the longitudinal axis along the entire length the corresponding metal strips are welded on the lock, and the ratio of the thickness of the strip b to the width of the groove B is in the range from 0.65 to 0.9, and the ratio of the size of the side of the cam A perpendicular to the axis of the welded strip to the width of the groove B is in the range from 1.7 up to 2.6. 2. The lock for connecting the tongue-and-groove elements according to claim 1, characterized in that in the cross section it has an angular shape formed by a strip bent at an angle α equal to 60-180 ° in radius, not less than the thickness of the strip.

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