RU191711U1 - Wedge lock - Google Patents

Abstract

It is proposed a wedge lock, prefabricated, containing a wedge and grips in the form of a body and fork, forming a bracket in the working position. The body and plug has an I-beam with a variable cross-sectional area along its length. In this case, the first end narrow working surface of the wedge is made perpendicular to the flat longitudinal parts of the wedge and fork, the second end narrow working surface of the wedge, forming an acute angle with the first end narrow working surface of the wedge, is parallel to the corresponding contacting surfaces of the openings of the case and fork, and the flat surfaces of the wedge have recesses with the formation in the central part of the jumper. The housing has a longitudinal hole in the form of an I-beam, along which the fork moves, in cross section also having an I-profile. The housing in the flat longitudinal part on each side has recesses, with the formation of a bridge. EFFECT: increased reliability of a wedge lock. 5 ill.

Description

The proposed utility model relates to the field of construction, in particular to building structures and is intended for use in various formwork systems, structures of quickly erected structures and other systems. A wedge lock is used for horizontal and vertical connection of formwork panels.

The level of technology.

Known wedge lock see RF patent No. 143290 from 07/20/2014. This lock contains a wedge with a shock pad and grips, forming in the working position a bracket with a base of variable length and branches with ribs forming ribs. In this case, the outer element forming the base of variable length is made with a groove forming the ribs. The disadvantage of this lock is its low reliability, due to the poor rigidity of the engagement, due to the fact that the grips forming a bracket in the working position have a small contact spot during operation of the lock.

The closest technical solution is a wedge lock, described in Russian patent No. 2293829, dated 02.20.2007. This patent discloses a lock for connecting formwork elements comprising movable clamping cams and a wedge. Moreover, it is made in the form of a bracket consisting of two articulated half-brackets, made with the possibility of moving relative to each other, on which clamping cams are located, while in both half-brackets there are holes for placing a wedge, each half-brace consists of a base and a console, each console has a T-shaped or I-shaped profile with a variable cross-sectional area along the length of the console.

The disadvantage of this lock is its low reliability, due to the fact that the transmission of shock force from the wedge to the fork occurs along the line, and this, in turn, causes premature wear of the rubbing parts.

The technical result of the utility model is to increase the reliability of a wedge lock.

The technical result is achieved by the fact that the wedge lock, prefabricated, contains a wedge with a shock pad and grips in the form of a body and a fork, made with the possibility of movement relative to each other, and forming a bracket in the working position, while the holes and the wedge are made in the body and fork , the body and the plug has an I-beam with a variable cross-sectional area along its length. In addition, the first end narrow working surface of the wedge is made perpendicular to the flat longitudinal parts of the wedge and fork, the second end narrow working surface of the wedge, forming an acute angle with the first end narrow working surface of the wedge, is parallel to the corresponding contacting surfaces of the openings of the case and fork, and the flat longitudinal surfaces of the wedge have recesses with the formation in the central part of the bridge, the housing has a longitudinal hole in the form of an I-beam, along which the fork moves, in cross section having I-profile, the body in the plane of the longitudinal parts on each of its sides has two recesses to form bridges, and end portion of the plug, a member of the body are chamfered at an angle and contacts with the corresponding surface of the housing.

The essence of the claimed invention is illustrated by drawings Fig.1-5, where

figure 1 shows a drawing of the proposed wedge lock;

figure 2 shows a drawing of the proposed wedge lock side view and in section;

figure 3 shows the plug and wedge of the wedge lock,

figure 4 shows a cross section of a wedge lock,

figure 5 shows the wedge lock case.

In the figures, the positions indicate the following positions.

1 - housing

2 - plug

3 - wedge,

4 - contact surface of the wedge with the surfaces of the housing and plug,

5 - wedge jumper,

6 - wedge butt,

7 - contact surfaces of the plug,

8 - the cap of the housing in contact with the end part of the plug included in the housing,

9 - recesses in the flat longitudinal part of the housing,

10 - jumper in the flat longitudinal part of the body, formed by two recesses.

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The proposed castle shown in figures 1-5 are made of metal.

The wedge lock consists of the following parts:

- the case (pos. 1 of Fig. 1) with a longitudinal internal non-through hole of a curved section in the form of an I-beam;

- a fork (pos. 2 of Fig. 1) whose cross-section is mated with an opening in the housing 1 with a gap providing mobility of the latter;

- a wedge (pos. 3 of Fig. 1) with a reinforced central and final part.

In the proposed lock, the impact force from the wedge (see pos. 3) to the plug and partially to the body is transmitted over the surface (see pos. 4 of Fig. 2, Fig. 3), which increases the friction force at the point of contact, which in turn increases the reliability of jamming and prevents wedging of the lock under the influence of force on the jaws of the housing and forks with pressure on the prefabricated formwork panels. To do this, the contacting face of the hole in the plug and body is beveled at the same angle as the wedge.

A jumper is introduced into the design of the wedge (see pos. 5 of FIG. 2), which increases rigidity in the working area. The wedge butt (see pos. 6 of FIG. 2) is made radial (outward) with a variable cross-section for a better distribution of impact forces, while the reactions will be at one point that does not go beyond the wedge cross-section.

The engagement of the plug pos.2 and the housing pos.1 is made according to the slide pattern (see Figure 4). With this scheme, the contact spot increases during the operation of the lock due to the internal shelves (see pos. 7 of Figure 4), which in turn leads to greater gearing rigidity.

The figured guide hole in the form of an I-beam in the lock case is made with a plug (see pos. 8 of Figure 5) to increase rigidity under load on the half-arm. Along the flat part of the body there are external recesses that increase rigidity (see pos. 9 of Fig. 5). In the housing, at the pressure point of the wedge, there is a reinforcing bridge formed by recesses of pos. 9, which in turn adds rigidity to the entire structure (see pos. 10 of Fig. 5).

The castle is collected as follows, see figure 1.

The housing pos.1 is articulated with the plug pos.2 by introducing the protruding part of the plug, which in cross section has an I-shaped in the corresponding cavity of the housing pos.1. When combining the transverse holes, a wedge pos. 3 is inserted into them.

The castle operates as follows. To connect the formwork panels, their ends are combined with each other, after which the body and fork grips are placed in their recesses. Then, hitting the butt of the wedge pos.6, hammer it into the holes of the housing and forks, as a result of which the grips of the housing pos.1 and forks pos.2 converge, clamping the formwork elements.

Claims (7)

A wedge lock, prefabricated, comprising: a wedge with a strike pad and grips in the form of a body and a fork, made to move relative to each other, and forming a bracket in the working position, while holes in the wedge and the plug are made to accommodate the wedge, the body and fork have I-profile with a variable cross-sectional area along its length, characterized in that the first end narrow working surface of the wedge is made perpendicular to the flat longitudinal parts of the body and fork, the second end narrow working surface of the wedge, forming an acute angle with the first end narrow working surface of the wedge, parallel to the corresponding contacting surfaces of the openings of the housing and plug, and the flat longitudinal surfaces of the wedge have recesses with the formation in the central part of the bridge, the housing has a longitudinal hole in the form of an I-beam, along which the fork moves, in cross section also having an I-profile, the housing in a flat longitudinal part on each side has two recesses, with the formation of a bridge, and the end part of the plug entering the housing is angled bevelled and is in contact with the corresponding surface of the housing.

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