This application claims priority to Chinese patent application No. 202011072164.7, filed on Oct. 9, 2020, which is incorporated herewith by reference.
The present invention relates generally to a rebar splicer, and more particularly, to a rebar splicer capable of enabling quick visual measuring of a predetermined torque value.
In construction and civil engineering, both reinforced concrete (RC) structures and steel reinforced concrete (SRC) structures require the use of steel rebar to construct the structures. In order to facilitate transportation and storage, the manufactured steel rebar will be cut into specific lengths at the steel rebar manufacturing site before being transported to the construction site for use. Because the height of each building is different, it is usually necessary to use a specific construction method to connect steel rebar to extend the length, and the strength of the connection must be considered. It is one of the common construction methods in the industry to use a steel splicer to connect two steel rebar.
There are two ways for rebar splicers to splice two rebars: The first type of rebar splicer includes a female splicer and two male splicers. One end of each male splicer is welded to the end of a steel rebar. The two male splicers respectively pass through the two ends of the female splicer and are fixed in the female splicer. The second type of rebar splicer includes a female splicer and a male splicer. One end of the female splicer is welded to the end of a steel rebar, and one end of the male splicer is welded to the end of another steel rebar. The other end of the male splicer passes through one end of the female splicer and is fixed in the female splicer.
Generally speaking, the inspector usually uses a torque wrench to tighten the rebar splicer. If the torque wrench shows that the actual torque value of the rebar splicer reaches a predetermined torque value, it means that the rebar splicer is fully locked. If the torque wrench shows that the actual torque value of the rebar splicer is lower than the predetermined torque value, it means that the rebar splicer has not been locked.
If the rebar splicer is not locked, the structural strength of the piece will be affected, and the earthquake resistance will also decrease. In the event of a strong earthquake, the rebar splicer will not be able to perform its due role. Therefore, all steel rebar splicer of the building must be locked to ensure that the building has a certain degree of earthquake resistance.
However, the number of rebar splicers used in construction and civil engineering is very large, and manual operations will inevitably be overlooked. When some rebar splicers may be partially or not locked, because it is impossible to visually judge whether the rebar splicer has reached the predetermined torque value by visual inspection, it is impossible to visually distinguish which rebar splicers are completely locked, partially locked or not locked by visual inspection only. The inspector needs to use a torque wrench to check one by one. The project is very large, time-consuming and laborious.
A primary objective of the present invention is to provide a rebar splicer enabling quick visual detecting of a predetermined torque value, which can enable the inspectors to quickly visually determine whether the rebar splicer reaches the predetermined torque value, thereby judging whether it is locked, eliminating complicated inspection procedures, and shortening labor Time, high efficiency.
For achieving the foregoing objective, the present invention provides a rebar splicer that can quickly and visually detect a predetermined torque value, which includes a female splicing piece and at least one male splicing piece; the female splicing piece comprising: a body, at least one end portion, and at least one connecting portion; the at least one connecting portion being disposed between at least one end of the body and the at least one end portion, and at least one groove being formed around outer side of the at least one connecting portion along a circumferential direction; the thickness of at least one connecting portion being smaller than the thickness of at least one end portion and the thickness of the body; the at least one male splicing piece passing through the at least one end portion and the at least one connecting portion and being fixed in the body.
Preferably, the at least one groove has a width in an axial direction, the width is tapered from the outside to the inside, and the deepest part of the at least one groove corresponds to the thinnest part of the at least one connecting portion.
Preferably, the female splicing piece is provided with at least one screw hole and at least one through hole, the at least one through hole communicates with the at least one screw hole, and a junction between the at least one through hole and the at least one screw hole is located on the same plane with the thinnest part of the at least one connecting portion; the at least one male splicing piece has a screw part, and the at least one screw part passes through the at least one through hole and is screwed and fixed in the at least one screw hole.
Preferably, the cross-sectional shape of the at least one groove is V-shaped.
Preferably, the at least one through hole is a round hole.
Preferably, the at least one end portion is polygonal.
Preferably, the female splicing piece comprises two end portions and two connecting portions, the two connecting portions are respectively disposed between the two ends of the body and the two end portions, and a groove is formed on outer side of each connecting part along a circumferential direction, so that the thickness of each connecting portion is less than the thickness of each end portion and the thickness of the body; and wherein, the rebar splicer comprises two male splicing pieces, the two male splicing pieces respectively pass through the two end portions and the two connecting portions and is fixed in the body.
The effect of the present invention is that the rebar splicer of the present invention can enable the inspectors to quickly visually check whether the rebar splicer has reached the predetermined torque value, thereby judging whether it is locked, avoiding complicated inspection procedures, shortening working hours, and achieving high efficiency.
The present invention will be apparent to those skilled in the art by reading the following detailed description of a preferred embodiment thereof, with reference to the attached drawings, in which:
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
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Because the two grooves 14 are formed on the outside of the two connecting portions 13 and the thickness of the two connecting portions 13 is less than the thickness of the two end portions 12 and the thickness of the body 11, the torque value that the two connecting parts 13 can withstand is equal to the predetermined torque value when the body 11 and the male splicing piece 20 are tightly locked.
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Thereby, when the inspector is locking the rebar splicer of the present invention, as long as the two connecting portions 13 are seen broken visually, they can immediately know that the actual torque value between the body 11 and the two male splicing pieces 20 is just equal to the predetermined torque value at the time of locking, the steel rebar splicer of the present invention has been completely locked. Therefore, there is no need to use a torque wrench to measure the actual torque value between the body 11 and the two male splicing pieces 20, and any type of wrench can be used to lock the rebar splicer of the present invention.
Because the number of rebar splicers used in construction and civil engineering is very large, erroneous oversight in manual work is virtually inevitable. There may be some rebar splicers that are only partially or not locked, so the inspectors need to be sent to inspect the rebar splicers one by one. The partial locking means that one connecting portion 13 is broken and the other connecting portion 13 is not broken, which means that the body 11 and one of the male splicing piece 20 are locked, and the body 11 and the other male splicing piece 20 are not locked. The “not locked” means that the two connecting portions 13 are not broken and are intact as before, which means that the body 11 and the two male splicing pieces 20 are not locked. In the process of inspecting one by one, as long as the inspectors see whether the two connecting portions 13 of all the female splicing pieces 10 are broken, the inspectors can distinguish which rebar splicers of the present invention are fully locked, partially locked or not locked. The fully locked rebar splicer of the present invention can be directly skipped. The inspector only needs to fully lock the rebar splicer of the present invention for the partially locked and not locked, which eliminates the need for conventional complicated inspection procedures, shortens working hours and achieves high efficiency.
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Generally speaking, the wrench usually engages a polygonal object. Therefore, as shown in
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In summary, the rebar splicer of the present invention can enable inspectors to quickly visually check whether the rebar splicer has reached a predetermined torque value, thereby judging whether it is locked, eliminating complicated inspection procedures, shortening working hours, and achieving high efficiency.
Although the present invention has been described with reference to the preferred embodiments thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims.
Number | Date | Country | Kind |
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202011072164.7 | Oct 2020 | CN | national |