Threaded Rebar Connectors

Abstract

The threaded steel bar connector comprises an outer sleeve, a first inner lining tile, a second inner lining tile, a first nut and a second nut. The outer sleeve has a light hole and a threaded hole. One end of the outer sleeve has a shoulder. The inner surface of the first inner lining tile has a first transverse groove. The outer surface of the first inner lining tile has a cylindrical surface and an external thread. The inner surface of the second inner lining tile has a second transverse groove. The second inner lining tile has an external thread. A pair of first inner lining tiles and a pair of second inner lining tiles are respectively wrapped around one end of two threaded steel bars so that their transverse grooves match the transverse ribs on the threaded steel bars. Then the outer sleeve is combined with the pair of first inner lining tiles and the pair of second inner lining tiles. Then the first nut is connected to the external thread of the first inner lining tile, and the second nut is connected to the external thread of the second inner lining tile. Finally, the first nut and the second nut are respectively pressed against the two ends of the outer sleeve to complete the connection of the two threaded steel bars.

Description

Technical Field

[0001] The invention relates to a device for connecting two threaded steel bars in building construction. Background Art

[0002] In construction, it is often necessary to connect two threaded steel bars. Currently, there are two ways to connect threaded steel bars. One way is to connect the two threaded steel bars by welding on site, and the other way is to process the two ends of the two threaded steel bars into external threads on site, and then connect the two threaded steel bars with a sleeve with internal threads. The above two methods have the following disadvantages: on-site processing is labor-consuming and time-consuming; the production cost is relatively high. Summary of the invention

[0003] The object of the present invention is to provide a threaded steel bar connector, by which two threaded steel bars can be quickly butt-jointed at a construction site.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a threaded steel bar connector, which comprises an outer sleeve, a pair of first inner lining tiles, a pair of second inner lining tiles, a first nut and a second nut. The inner hole of the outer sleeve has a section of light hole and a section of threaded hole. The light hole is communicated with the threaded hole, and the diameter of the threaded hole is larger than the light hole. The end of the outer sleeve adjacent to the light hole has a shoulder. The inner surface of the first inner lining tile is provided with a plurality of first transverse grooves. The outer surface of the first inner lining tile has a section of smooth cylindrical surface and a section of external thread. The diameter of the external thread on the first inner lining tile is smaller than the diameter of its cylindrical surface. The inner surface of the second inner lining tile is provided with a plurality of second transverse grooves. The outer surface of the second inner lining tile has an external thread. The first transverse grooves and the second transverse grooves cooperate with the transverse ribs on the connected threaded steel bar. The cylindrical surface of the first inner lining tile cooperates with the gap between the light hole of the outer sleeve. The external thread of the second inner lining tile cooperates with the threaded hole of the outer sleeve. The first nut cooperates with the external thread of the first inner lining tile, and the second nut cooperates with the external thread of the second inner lining tile.

[0005] It can be seen from the above scheme that a pair of first lining tiles and a pair of second lining tiles are respectively wrapped around one end of the two threaded steel bars, so that the transverse grooves on their inner surfaces cooperate with the transverse ribs on the threaded steel bars, and then the outer sleeve is combined with the pair of first lining tiles and the pair of second lining tiles, and then the first nut is connected to the external thread of the first lining tile, and the second nut is connected to the external thread of the second lining tile, and finally the first nut and the second nut are respectively pressed against the two ends of the outer sleeve to complete the reliable connection of the two threaded steel bars.

[0006] The invention has a simple and reasonable structure and is easy to use. It can quickly and reliably connect two threaded steel bars on site, thereby improving operation efficiency and saving construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the structure and the use status of an embodiment of the present invention;

[0008] Figure 2 for Figure 1 A-A section view;

[0009] Figure 3 for Figure 1 B-B section view. DETAILED DESCRIPTION

[0010] The present invention is further described below with reference to the embodiments and the accompanying drawings.

[0011] See also Figure 1 , Figure 2 , Figure 3

[0012] The threaded steel bar connector provided by the present invention comprises an outer sleeve 4, a pair of first inner lining tiles 2, a pair of second inner lining tiles 7, a first nut 1 and a second nut 6. The inner hole of the outer sleeve 4 comprises a section of light hole 4c and a section of threaded hole 4b, the light hole 4c is connected with the threaded hole 4b, and the diameter of the threaded hole 4b is larger than the diameter of the light hole 4c, and the end of the outer sleeve 4 adjacent to the light hole comprises a shoulder 4a. A plurality of first transverse grooves 2c are arranged on the inner surface of the first inner lining tile 2, the outer surface of the first inner lining tile 2 comprises a section of smooth cylindrical surface and a section of external thread, the diameter of the external thread on the first inner lining tile 2 is smaller than the diameter of the cylindrical surface, and the outer surface of the first inner lining tile 2 comprises a first through groove 2a extending along the circumferential direction and penetrating the two sides thereof. A plurality of second transverse grooves 7c are arranged on the inner surface of the second inner lining tile 7, the outer surface of the second inner lining tile 7 comprises an external thread, and the outer surface of the second inner lining tile 7 comprises a second through groove 7a extending along the circumferential direction and penetrating the two sides thereof. The first transverse groove 2c cooperates with the transverse rib 9b on the connected threaded steel bar 9, the second transverse groove 7c cooperates with the transverse rib 8b on the connected threaded steel bar 8, the cylindrical surface of the first lining tile 2 cooperates with the light hole 4c of the outer sleeve 4, the external thread of the second lining tile 7 cooperates with the threaded hole 4b of the outer sleeve 4, the first nut 1 cooperates with the external thread of the first lining tile 2, and the second nut 6 cooperates with the external thread of the second lining tile 7.

[0013] The inner surfaces of the above-mentioned first lining tile 2 and second lining tile 7 are both cylindrical surfaces. The spacing between the first transverse grooves 2c on the first lining tile 2 corresponds to the spacing between the transverse ribs 9b on the connected threaded steel bar 9, and the spacing between the second transverse grooves 7c on the second lining tile 7 corresponds to the spacing between the transverse ribs 8b on the connected threaded steel bar 8, and the first transverse grooves 2c coincide with the contour of the transverse ribs 9b, and the second transverse grooves 7c coincide with the contour of the transverse ribs 8b.

[0014] See also Figure 2 , Figure 3

[0015] In this embodiment, first notches 2b extending in the longitudinal direction are respectively provided at the edges of both sides of the inner surface of the first lining tile 2, and the first notches 2b penetrate both ends of the first lining tile 2. Second notches 7b extending in the longitudinal direction are respectively provided at the edges of both sides of the inner surface of the second lining tile 7, and the second notches 7b penetrate both ends of the second lining tile 7. For the threaded steel bars 9 and 8 with longitudinal ribs, when the connector connects them, the longitudinal ribs 9a and 8a of the threaded steel bars 9 and 8 can be exactly located in the first notches 2b and the second notches 7b respectively.

[0016] Combination Figures 1 to 3 It can be seen that the connector can be used to connect two threaded steel bars according to the following operating steps: put the first nut 1 and the outer sleeve 4 on the threaded steel bar 9, so that a pair of first lining tiles 2 wrap one end of the threaded steel bar 9, and clamp the iron wire or steel wire 3 in the first through groove 2a. By bundling the iron wire or steel wire 3, the pair of first lining tiles 2 are tightly held on the threaded steel bar 9, and then the cylindrical surface of the pair of first lining tiles 2 is gap-matched with the light hole 4c of the outer sleeve 4; make a pair of second lining tiles 7 wrap one end of the threaded steel bar 8, clamp the iron wire or steel wire 5 in the first through groove, and clamp the pair of second lining tiles 7 on the threaded steel bar 8 by bundling the iron wire or steel wire 5, and then the external thread of the pair of second lining tiles 7 is matched with the threaded hole 4b of the outer sleeve 4; connect the first nut 1 with the external thread of the first lining tile 2, connect the second nut 6 with the external thread of the second lining tile 7, and finally press the first nut 1 and the second nut 6 to the two ends of the outer sleeve 4 respectively, and the connection of the two threaded steel bars is completed. In addition, since the cylindrical surface of the first lining tile 2 is gap-fitted with the light hole 4c of the outer sleeve 4, before the first nut 1 is pressed against one end of the outer sleeve 4, the threaded steel bar 9 together with the first lining tile 2 can rotate relative to the sleeve 4. Even if the longitudinal ribs of the two are not in the same straight line, it will not affect their reliable connection. Therefore, in the operation of connecting the two threaded steel bars 9 and 8, there is no need to consider whether the longitudinal ribs of the two are aligned, which can greatly facilitate the operation during connection.

Claims

1. Threaded steel bar connector, characterized in that: It comprises an outer sleeve, a pair of first inner lining tiles, a pair of second inner lining tiles, a first nut and a second nut. The inner hole of the outer sleeve comprises a section of light hole and a section of threaded hole. The light hole is communicated with the threaded hole, and the diameter of the threaded hole is larger than the light hole. The end of the outer sleeve adjacent to the light hole comprises a shoulder. The inner surface of the first inner lining tile is provided with a plurality of first transverse grooves. The outer surface of the first inner lining tile comprises a section of smooth cylindrical surface and a section of external thread. The diameter of the external thread on the first inner lining tile is smaller than the diameter of its cylindrical surface. The inner surface of the second inner lining tile is provided with a plurality of second transverse grooves. The outer surface of the second inner lining tile comprises an external thread. The first transverse groove and the second transverse groove are connected to the transverse groove on the threaded steel bar connected thereto. The ribs cooperate with each other, the cylindrical surface of the first lining tile cooperates with the gap of the light hole of the outer sleeve, the external thread of the second lining tile cooperates with the threaded hole of the outer sleeve, the first nut cooperates with the external thread of the first lining tile, and the second nut cooperates with the external thread of the second lining tile; the edges on both sides of the inner surface of the first lining tile are respectively provided with first notches extending along the longitudinal direction thereof, the first notches penetrate through both ends of the first lining tile, the edges on both sides of the inner surface of the second lining tile are respectively provided with second notches extending along the longitudinal direction thereof, the second notches penetrate through both ends of the second lining tile, the outer surface of the first lining tile is provided with a first through groove extending along the circumferential direction thereof and penetrating through both sides thereof, and the outer surface of the second lining tile is provided with a second through groove extending along the circumferential direction thereof and penetrating through both sides thereof.

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