CN113710859A

CN113710859A - Apparatus for positioning and retaining tensile members within the contours of vertical cast formwork panels

Info

Publication number: CN113710859A
Application number: CN202080026376.3A
Authority: CN
Inventors: 基亚拉·发瑞进; 卢西亚·发瑞进
Original assignee: Faruijin Template Co ltd
Current assignee: Faruijin Template Co ltd; Faresin Formwork SpA
Priority date: 2019-04-04
Filing date: 2020-03-11
Publication date: 2021-11-26
Also published as: EP3947854A1; MX2021012123A; AU2020250980A1; EP3947854B1; WO2020201857A1; MA55485A; US20220205258A1; CA3132194A1; ES2946693T3

Abstract

A device (10) for locating and retaining a tensile member within a profile (11) of a formwork panel. The device comprises a first tubular body (12) adapted to be inserted into a through hole (13) provided on the profile (11) of the formwork panel, the first body (12) having a wider abutment portion (14) arranged at one of its ends, the wider portion being adapted to be in contact with the surface of the formwork panel directed towards the outside of the formwork.

Description

Apparatus for positioning and retaining tensile members within the contours of vertical cast formwork panels

The present invention relates to a device for locating and retaining a tensile member within the profile of a vertical casting for work panel.

Typically, for vertical casting, a formwork is used which comprises a plurality of panels extending mainly vertically so as to form the shape in which the casting is performed.

The opposing panels of the form are typically connected and held in place at a predetermined mutual distance by two or more tensile members extending between the forms.

Typically, the face plate of the form includes a perimeter profile having a through-hole adapted to be inserted by one of the tensile members.

In order to be able to fix the tension member to the panel, retaining means are used, which are essentially constituted by threaded washers, also known as wing nuts (wing nuts), into which the tension member is screwed, said tension member in turn being constituted by a threaded rod, usually made of steel.

These retaining means each have a threaded hole through which the tensile member slides to the predefined extension.

To provide the formwork, the panels (usually modular) are joined in a mirror-symmetrical manner and are fixed to one another by these tensile members.

The tensile member is in turn locked in contact with the outer surface of the panel by these retaining means.

During the pouring step, concrete is applied to the walls of the formwork constituted by the panels, the thrust forces being balanced by the tensile members.

The retention device resists movement of the panels of the form along the tensile member.

These known methods have some drawbacks.

Currently known retaining devices generally have a shape and a threaded hole suitable to be associated with:

-a tensile member having a substantially cylindrical end portion,

or a tensile member having end portions of substantially frustum shape.

Additionally, tensile members are currently commercially known having different dimensions.

Accordingly, retention devices are typically dedicated to one type or the other of tensile members.

This results in the disadvantage that the type of template having retaining means adapted to the tensile member with cylindrical ends cannot be used for tensile members with frustum-shaped ends and vice versa.

Thus, depending on the type of tensile member, it may be necessary to have one or the other retention means available.

It is an object of the present invention to provide a means for locating and retaining a tensile member within the profile of a vertical cast formwork panel that can improve upon the background art in one or more of the above mentioned respects.

Within this aim, an object of the invention is to provide a device for positioning and retaining a tensile member within the profile of a vertical cast formwork panel, which can be used both for tensile members with cylindrical ends and for tensile members with ends having the shape of a frustum.

It is another object of the present invention to provide a means for locating and retaining a tensile member within the contours of a vertical cast formwork panel that may be used with any type of tensile member regardless of the size of the tensile member.

It is another object of the present invention to provide a means for locating and retaining a tensile member within the contours of a form panel that is highly reliable, relatively easy to provide, and cost competitive.

This aim and these and other objects, which will become better apparent hereinafter, are achieved by a device for positioning and retaining a tensile member within the outline of a formwork panel, characterized in that it comprises a first tubular body adapted to be inserted into a through hole provided on said outline of said formwork panel, said first body having a wider abutment portion arranged at one of its ends, said wider portion being adapted to come into contact with a surface of said formwork panel directed towards the outside of said formwork.

Further characteristics and advantages of the invention will become more apparent from the description of a preferred but not exclusive embodiment of a device for positioning and retaining a tensile member within the profile of a formwork panel according to the invention, illustrated by way of non-limiting example in the accompanying drawings, in which:

figure 1 is a view of a device for positioning and retaining a tensile member within the contours of a formwork panel in a first embodiment in accordance with a first application of the present invention;

FIG. 2 is an exploded view of the application of FIG. 1;

figures 3a and 3b are two different views of a first component of an apparatus for positioning and retaining a tensile member within the contours of a formwork panel in a first embodiment;

FIG. 4 is a view of a device for positioning and retaining a tensile member within the contours of a form panel in a second embodiment in a second application in accordance with the present invention;

FIG. 5 is an exploded view of the application of FIG. 4;

figures 6a and 6b are two different views of a first component of an apparatus for positioning and retaining a tensile member within a contour of a formwork panel in accordance with a second embodiment of the present invention;

FIG. 7 is a cross-sectional view of the means for positioning and retaining the tensile member within the contours of the template panel in the application of FIG. 4;

FIG. 8 is a view of a device for positioning and retaining a tensile member within the contours of a form panel in a third embodiment in a third application in accordance with the present invention;

FIG. 9 is an exploded view of the application of FIG. 8;

FIG. 10a is a perspective view of the device of FIG. 8;

FIG. 10b is an exploded view of the device of FIG. 10 a;

FIG. 11 is a cross-sectional view of the device of FIG. 10 a;

FIG. 12 is a general view of a detail of the device of FIGS. 8-11;

figure 13 is a view of a fourth embodiment of an apparatus for positioning and retaining a tensile member within the contours of a template panel in a fourth application according to the present invention;

fig. 14 is an exploded view of the application of fig. 13.

Referring to the drawings, an apparatus for positioning and retaining a tensile member within the contours of a formwork panel in accordance with the present invention is generally indicated by reference numeral 10.

In view of fig. 1, 2, 4, 5 and 7, the device 10 is inserted into a through hole, not shown in the figures, indicated by reference numeral 13 in fig. 2, on the profile 11 of a formwork panel for vertical casting.

In a first embodiment, shown in fig. 1 to 3b, the device 10 comprises a first tubular body 12.

The first tubular body 12 is preferably, but not exclusively, made of metal material and is suitable for being inserted in a through hole 13 present on the profile 11 of the formwork panel.

The external perimeter of the first tubular body 12 is substantially equal to the internal perimeter of the hole 13 of the profile 11.

The first tubular body 12 is adapted for insertion of the substantially cylindrical end of the tensile member into the through hole 16 of the first tubular body 12, not shown in the figures.

The first tubular body 12 has a wider abutment portion 14 at one of its ends.

The aperture 16 of the first body 12 has a frustum-like shape, wherein the section with the smallest circumference is located at the end of the wider portion 14 directed towards the outside of the formwork.

The wider portion 14 is adapted to be in contact with the surface of the profile 11 of the formwork panel directed towards the outside of the formwork to ensure retention between the panel and the tensile member.

An interference is caused between the boundary of the wider portion 14 and the edge of the hole 13 of the profile 11, which produces an interference and a correlation between the two.

This portion 14 has a D-shaped peripheral edge profile, the straight part of which is adapted to come into contact with the projection 15 of the profile 11 in order to hinder the rotation of the device 10 during the insertion/screwing of the tensile member.

As is evident from fig. 3a and 3b, the portion 14 has a stepped shape, considered in the direction of the extension axis of the first body 12.

In a second embodiment shown in fig. 4 to 7, the device 10 comprises a first tubular body 12 (such as the one described above) and a second tubular body 17, the second tubular body 17 being adapted to be at least partially inserted into the first body 12.

In the embodiment shown in the figures, the second body 17 is completely inserted in the first body 12 and the two bodies (the first body 12 and the second body 17) have the same length.

The second body 17 is externally tapered and has a frustum-shaped aperture 18.

The second body 17 has two

wider end portions

19a and 19b and a plurality of annular projections 20 between the two

end portions

19a and 19b, the two

wider end portions

19a and 19b and the plurality of annular projections 20 forming the cone.

The second tubular body 17 is adapted such that the substantially frustum-shaped end of the tensile member is inserted into a through hole 18 of the second tubular body 17, not shown in the figures.

The second tubular body 17 is adapted to be inserted into a tensile member having a frustum-shaped end, which may be threaded or unthreaded.

The aperture 18 of the second body 17 has a frustum-like shape, wherein the section with the smallest circumference is located at the end of the wider portion 14 directed towards the outside of the formwork.

The second body 17 is preferably, but not exclusively, made of a plastic material.

The second body 17 is inserted inside the first body 12, the second body 17 being stably associated with the first body 12.

As is evident from fig. 7, the annular protrusion 20 is adapted to create an interlock between the first body 12 and the second body 17.

If the tensile member has a substantially cylindrical end, the device 10 is constructed only from the first body 12 and is used as shown in figures 1 and 2.

If the tensile member has ends that are substantially frustum-shaped, device 10 is constructed from an association between first body 12 and second body 17, and the method of use is illustrated in figures 4, 5, and 7.

Figures 8 to 12 show means for locating and retaining a tensile member within the profile of a vertical cast formwork panel in a third embodiment according to the present invention.

In a third embodiment according to the present invention, the device is generally indicated by reference numeral 110.

In view of fig. 8 and 9, the device 110 is inserted in a through hole, not shown in the figures, indicated by reference numeral 113 in fig. 9, which is located on the outline 111 of the formwork panel.

The apparatus 110 comprises:

a first tubular body 112, the first tubular body 112 being adapted to be inserted in the hole 113,

a second body 117, the second body 117 having a substantially annular profile inserted inside the first tubular body 112.

The first tubular body 112 is preferably, but not exclusively, made of a metallic material.

The outer perimeter of the first tubular body 112 is substantially equal to the inner perimeter of the aperture 113 of the profile 111.

The first tubular body 112 is adapted for insertion of one end of a tensile member into a through hole 116 of the first tubular body 112, not shown in the figures.

The aperture 116 of the first body 112 has a frustum-like shape with a cross-section having a smaller perimeter located near the end 118.

By virtue of this frustum-like shape, various types of tensile members can be used, which, along their extension, have both a constant cross section and a variable cross section, making it possible to adapt to various commercially available tensile members.

In the configuration of use of the device 110, the first tubular body 112 has a wider abutment portion 114, the abutment portion 114 being arranged at one end 118 of the first tubular body 112 projecting from the profile 111.

The wider portion 114 is adapted to contact the surface of the profile 111 of the formwork panel directed towards the outside of the formwork to ensure tightness between the panel and the tensile member.

A geometrical overlap is created between the boundary of the wider portion 114 and the edge of the aperture 113 of the profile 111, which creates an interference and correlation between the two.

This portion 114 has a D-shaped peripheral edge profile, the straight part of which is adapted to come into contact with a projection 115 of the profile 111 in order to hinder the rotation of the device 110 during the insertion/screwing of the tensile member.

As is apparent from fig. 10a and 10b, the portion 114 has a stepped shape, considered in the direction of the extension axis of the first body 112.

The second body 117 is made of plastic material and is adapted to pass at least a portion of the end of the tensile member within the through hole 119 of the second body 117.

The through hole 119 of the second body 117 is coaxial with the hole 116 of the first body 112.

The plastic material comprising the second body 117 has a structure that allows the size and shape of the aperture 119 to be adapted to the size and shape of the tensile member with minimal effort.

Such a plastic material is for example polyester or rubber.

In this manner, it is possible to use device 110 regardless of the type of tensile member used.

In particular, the second body 117 is arranged at/near the end 118 of the first body 112 protruding from the profile 111, and thus at the wider portion 114 of the first body 112.

The second body 117 has, in the following order, as considered from the axis of extension of the hole 119 of the second body 117:

a first substantially disc-shaped portion 120, the first substantially disc-shaped portion 120 being adapted to be flush with the end 18 of the first body 112,

a second annular portion 121, the outer diameter of the second annular portion 121 being greater than the outer diameter of the first portion 120,

a third annular portion 122, the third annular portion 122 in turn having:

an outer diameter smaller than the outer diameter of the second portion 121 and substantially equal to the outer diameter of the first portion 120,

an internal diameter substantially equal to the internal diameter of the second portion 121 and therefore creating a surface uniformly flush with the peripheral wall of the hole 116 of the second body 112.

The first body 112 has an annular seat 123 for housing the second portion 121 of the second body 117 near the end 118 of the first body 112.

When the second body 117 is inserted into the first body 112, the second body 117 is stably associated with the first body 112, interlocking the first body 112 with the second portion 121 of the second body 117 in the annular seat 123.

Figures 13 and 14 illustrate a fourth embodiment of a means for positioning and retaining a tensile member within the contours of a template panel, generally indicated by reference numeral 210, in accordance with the present invention.

The device 210 is inserted into a through hole, indicated by reference numeral 213 in fig. 14, on the profile 211 of a formwork panel (not shown in the figures) for vertical casting.

In a manner similar to the previous embodiment, the apparatus 210 comprises:

a first tubular body 212, the first tubular body 212 being adapted to be inserted into the hole 213,

a second body 217, the second body 217 having a substantially annular profile and being inserted inside the first tubular body 212.

The first tubular body 212 is preferably, but not exclusively, made of a metallic material.

The outer perimeter of the first tubular body 212 is substantially equal to the inner perimeter of the aperture 213 of the profile 211.

The first body 212 has a portion 214 of narrower cross section arranged at one end 218 of the first body 212, which portion 214 protrudes from the profile 211 in the configuration of use of the device 210.

The perimeter of such a portion 214 with narrower cross section is substantially equal to the perimeter of the hole of the panel, not shown in the figures, fixed to the profile 211 and suitable for being crossed by the device 210.

This hole of the panel corresponds to the hole 213 of the contour 211.

In this way, in the configuration of use, the device 210 protrudes with a portion 214 having a narrower cross section through the hole of the panel and is retained within the profile 111 due to the interference between the edge of the first body 212 and the edge of the hole of the panel.

The inner sides of the first body 212 and the second body 217 are similar to the inner sides of the devices described in the previous embodiments.

The second body 217 is inserted in the first body 212 in a manner completely analogous to that which occurs for the first embodiment of the device described.

Also in this embodiment, the use of the second body 217 in the first body 212 allows the device 210 to be used with tensile members of any shape and size.

In practice it has been found that the invention achieves the intended aim and objects, providing a device for positioning and retaining a tensile member within the profile of a vertical cast formwork panel, which can be used both for tensile members having cylindrical ends and for tensile members having frustum-shaped ends.

In addition, the present invention provides a means for positioning and retaining the tensile member within the profile of the vertical cast formwork panel that may be used with tensile members of any size.

Thus, it is contemplated that the present invention may be practiced with many modifications and alterations, all of which are within the scope of the appended claims; all the details may further be replaced with other technically equivalent elements.

In practice, the materials used, as well as the contingent shapes and dimensions, may be any according to requirements and to the state of the art, provided they are compatible with the specific use.

The disclosures in italian patent applications No. 102019000005054 and No. 102020000001861, from which this application claims priority, are incorporated herein by reference.

Where technical features mentioned in any claim are followed by reference signs, those reference signs have been included for the sole purpose of increasing the intelligibility of the claims and accordingly such reference signs do not have any limiting effect on the interpretation of each element identified by way of example by such reference signs.

Claims

1. A device (10) for positioning and retaining a tensile member within a contour (11) of a formwork panel, characterized in that it comprises a first tubular body (12), said first tubular body (12) being adapted to be inserted into a through hole (13) provided on said contour (11) of said formwork panel, said first body (12) having a wider abutment portion (14) arranged at one of its ends, said wider portion (14) being adapted to be in contact with a surface of said formwork panel directed towards the outside of said formwork.

2. The device (10) of claim 1, wherein the wider portion (14) has a D-shaped peripheral edge profile.

3. Device (10) according to one or more of the preceding claims, characterized by the fact that said wider portion (14) has a stepped shape, considered in the direction of the axis of extension of said first body (12).

4. Device (10) according to one or more of the preceding claims, characterized by the fact that said first tubular body (12) is preferably made of metallic material.

5. The device (10) according to one or more of the preceding claims, characterized in that said device (10) comprises a second tubular body (17), said second tubular body (17) being suitable to be at least partially inserted in said first body (12).

6. Device (10) according to one or more of the preceding claims, characterized by the fact that said second body (17) is externally tapered and has a through hole (18).

7. Device (10) according to one or more of the preceding claims, characterized by the fact that said hole (18) of said second body (17) has a frustum-like shape, wherein the cross section with smaller circumference is arranged at the end of said wider portion (14) directed towards the outside of said template.

8. Device (10) according to one or more of the preceding claims, characterized by the fact that said second body (17) has two wider end portions (19a, 19b) and a plurality of annular projections (20) between said two wider end portions (19a, 19 b).

9. Device (10) according to one or more of the preceding claims, characterized by the fact that said second body (17) is preferably made of plastic material.

10. Device (10) according to one or more of the preceding claims, characterized by the fact that said second body (17) is completely inserted in said first body (12) and said second body (17) have the same length.

11. An apparatus (110, 210) for positioning and retaining a tensile member within a contour (111, 211) of a formwork panel, the apparatus (110, 210) comprising:

-a first tubular body (112, 212), said first tubular body (112, 212) being adapted to be inserted into a through hole (113, 213) provided in said contour (111, 211) of said template panel,

-a second body (117, 217), the second body (117, 217) having a substantially annular profile inserted inside the first tubular body (112, 212).

12. The device (110, 210) according to claim 11, wherein the first body (112, 212) has a bore (116, 216) coaxial with the bore (119) of the second body (117, 217).

13. Device (110, 210) according to one or more of claims 11 and 12, characterized in that said second body (117, 217) is made of plastic material.

14. Device (110, 210) according to one or more of claims 11 to 13, characterized in that, in the configuration of use of the device (110, 210), said second body (117, 217) is arranged at/near an end (118, 218) of said first body (112, 212) projecting from said profile (111, 211).

15. Device (110, 210) according to one or more of claims 11 to 14, characterized in that said second body (117, 217) has, considered from the axis of extension of the hole (119) of said second body (117, 217), in the following order:

-a first substantially disc-shaped portion (120), said first substantially disc-shaped portion (120) being adapted to be uniformly flush with said end portion (118, 218) of said first body (112, 212),

-a second annular portion (121), the outer diameter of the second annular portion (121) being larger than the outer diameter of the first portion (120),

-a third annular portion (122), said third annular portion (122) in turn having:

-an outer diameter smaller than the outer diameter of the second portion (121) and substantially equal to the outer diameter of the first portion (120),

-an inner diameter substantially equal to the inner diameter of the second portion (121) and thus creating a surface that is uniformly flush with the peripheral wall of the hole (116, 216) of the first body (112, 212).

16. Device (110, 210) according to one or more of claims 11 to 15, characterized in that said first body (112, 212) has an annular seat (123), said annular seat (123) being intended to house said second portion (121) of said second body (117) in proximity of said end (118).

17. The device (110, 210) according to one or more of claims 11 to 16, characterized in that said aperture (116, 216) of said first body (112, 212) has a frustum-like shape, wherein a cross section with a smaller circumference is located in proximity of said end (118, 218).

18. The device (110) according to one or more of claims 11 to 17, characterized in that said first tubular body (112) has a wider portion (114) arranged at said end (118).

19. The device (110) according to claim 18, wherein the wider portion (114) has a D-shaped peripheral edge profile and a stepped shape, considered in the direction of the extension axis of the first body (112).

20. The device (210) according to one or more of claims 11 to 17, characterized in that said first body (212) has a portion (214) of reduced cross section arranged at said end (218).