CN210946868U - Connector for threaded steel bar and prestressed tendon - Google Patents

Connector for threaded steel bar and prestressed tendon Download PDF

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Publication number
CN210946868U
CN210946868U CN201921484128.4U CN201921484128U CN210946868U CN 210946868 U CN210946868 U CN 210946868U CN 201921484128 U CN201921484128 U CN 201921484128U CN 210946868 U CN210946868 U CN 210946868U
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China
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hollow bolt
steel bar
connector
hole
columnar
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温朝臣
刘进
苏强
莫钒
朱元
经凤明
苏韩
左海宁
曾航宇
莫鲤木
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LIUZHOU CONSTRUCTION MACHINERY FACTORY GENERAL
Liuzhou OVM Machinery Co Ltd
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LIUZHOU CONSTRUCTION MACHINERY FACTORY GENERAL
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Abstract

A connector for a deformed steel bar and a prestressed tendon comprises connecting anchor plates, clamping pieces I and II, hollow bolts I and II and columnar elastic bodies I and II; two end faces of the connecting anchor plate are respectively provided with a taper hole I and a taper hole II for mounting the clamping piece I and the clamping piece II, and an internal thread hole I and an internal thread hole II for mounting the hollow bolt I and the hollow bolt II; the taper directions of the taper hole I and the taper hole II are opposite; the hollow bolt I and the hollow bolt II are of a through type and are provided with external threads; in the installation state, the prestressed tendons and the deformed steel bars respectively penetrate through inner holes of the hollow bolt I and the hollow bolt II; clamping piece I, clamping piece II are installed respectively in taper hole I and taper hole II of connecting the anchor slab, and column elastomer I and column elastomer II are installed respectively and are being stuck by the draw-in groove in hollow bolt I and hollow bolt II, and hollow bolt I and hollow bolt II screw in respectively connect in the internal thread hole I and the internal thread hole II of anchor slab, and this connector has the installation simply, efficient, the advantage that the anchor reliability is high.

Description

Connector for threaded steel bar and prestressed tendon
Technical Field
The utility model relates to a product suitable for prestressing force engineering field is assembled in prefabrication, especially one kind is used for connecting the connection between equidirectional prestressing force stick and the muscle, plays a prestressing force stick and prestressing force muscle connector of transitional coupling and transmission prestressing force effect.
Background
In some prestress projects similar to wind power tower drums, a main body consists of a foundation section, a precast concrete tower drum section and a steel tower drum section, and the three sections are reinforced by prestress after being assembled to prevent collapse; the foundation part is a lower structure, a rigid deformed steel bar is pre-embedded, the precast concrete tower cylinder sections and the steel tower cylinder sections are upper structures, flexible prestressed steel strands are adopted for connection, steel strands are installed in a penetrating mode after the precast tower cylinder sections are assembled, and the deformed steel bar and the steel strands are connected through a deformed steel bar and steel strand connector; when the prestress tensioning is carried out, the jack is used for tensioning the steel strand, the prestress is transmitted to the connector from the anchorage device at the tensioning end, then is transmitted to the deformed steel bar by the connector, and finally is transmitted to the foundation structure, and the steel strand is anchored after being tensioned to the designed tonnage.
A connector of a deformed steel bar and a steel strand wire in the prior art is shown in fig. 10-1-10-2 and comprises a connecting anchor plate 9a, a working clamping piece 3a and a hollow bolt 1a, wherein during installation, the connecting anchor plate 9a and the deformed steel bar pre-embedded in concrete are combined together in a knob mode, then the steel strand wire penetrates into a taper hole of the connecting anchor plate 9a, the working clamping piece 3a is installed, the working clamping piece 3a is knocked down by a tool, and finally the hollow bolt 1a is installed; the disadvantages of this connector are: (1) the installation process is multiple, and the construction efficiency is low; (2) the installation difficulty is large in a small space. The reason is that (a) because the screw-thread steel bar is fixed in the structure, the screw-thread steel bar and the anchor plate 9a can be connected only by connecting the knob with the anchor plate, and the space of the knob is required to be reserved in the process; (b) when the working clamping piece 3a is installed, a tool is required to knock the working clamping piece 3a tightly, and the process needs to reserve the moving space for knocking the working clamping piece 3a by the tool. In the above process, under the condition of small reserved space, the operation difficulty is very high, and sometimes even a connector cannot be installed; (3) because the connection anchor plate 9a and the deformed steel bar need to be connected in a knob mode, when the deformed steel bar is fixed, the acting objects of the knob can only be one-to-one and are not suitable for a plurality of objects, so that the structure is only suitable for connecting a single deformed steel bar when the deformed steel bar is fixed and cannot be simultaneously connected with a plurality of deformed steel bars; (4) just install after penetrating the steel strand wires work clamping piece 3a, because of the construction space is limited, it is extremely inconvenient to operate, often appears the condition that work clamping piece 3a knocks tightly, and the clamping piece also often falls downwards owing to the dead weight when using vertical prestressed beam, all can lead to the unable tight steel strand wires of clamp piece, leads to the smooth silk of stretch-draw in-process above.
Disclosure of Invention
The utility model provides a deformed steel bar and prestressed tendons connector improves through the centre gripping mode to the deformed steel bar in to prior art product, and this deformed steel bar has the installation simply, the installation effectiveness is high, be applicable to little space operating mode with the steel strand wires connector, can be connected simultaneously with many deformed steel bars, advantage that the anchor reliability is high to solve the above-mentioned problem that current connector exists.
The technical scheme for solving the problems is as follows: the utility model provides a screw-thread steel bar and prestressing tendons connector which characterized in that: the connector for the deformed steel bar and the prestressed tendon comprises a connecting anchor plate, a clamping piece I, a clamping piece II, a hollow bolt I, a hollow bolt II, a columnar elastic body I and a columnar elastic body II;
one end face of the connecting anchor plate is provided with m taper holes I for mounting the clamping pieces I and an internal thread hole I for mounting the hollow bolt I, and the taper holes I and the internal thread hole I are communicated;
the other end face of the connecting anchor plate is provided with n conical holes II for mounting the clamping pieces II and an internal threaded hole II for mounting the hollow bolt II, and the conical holes II and the internal threaded hole II are communicated;
the taper directions of the taper holes of the taper hole I and the taper hole II are opposite; the value ranges of m and n are as follows: m is an integer greater than or equal to 2, n is an integer greater than or equal to 1;
the hollow bolt I and the hollow bolt II are of a through type, are provided with external threads and are respectively screwed and matched with an internal thread hole I and an internal thread hole II of the connecting anchor plate; a clamping groove I and a clamping groove II are respectively arranged in the hollow bolt I and the hollow bolt II;
in the installation state, the prestressed tendons 4 and the deformed steel bars respectively penetrate through inner holes of the hollow bolt I and the hollow bolt II; the clamping piece I and the clamping piece II are respectively installed in a taper hole I and a taper hole II of the connecting anchor plate, the columnar elastic body I and the columnar elastic body II are respectively installed in the hollow bolt I and the hollow bolt II and are clamped by clamping grooves, the hollow bolt I and the hollow bolt II are respectively screwed into the inner thread hole I and the inner thread hole II of the connecting anchor plate, a flat position is designed on the excircle of the hollow bolt, and the columnar elastic body I and the columnar elastic body II are compressed in a mode of rotating the hollow bolt I and the hollow bolt II; the columnar elastic bodies I and II tightly prop the clamping pieces after the prestressed tendons and the threaded steel bars are installed in place.
The further technical scheme is as follows: the columnar elastic bodies I and II are compression springs or high-elasticity columnar rubber blocks or columnar elastic bodies made of high-elasticity media, the outer diameters of the columnar elastic bodies I and II are slightly smaller than the inner hole diameters of the hollow bolts I and II, and the inner diameters of the columnar elastic bodies I and II are larger than the outer diameters of the prestressed tendons and the threaded steel bars.
The tooth shape of the clamping piece II matched with the deformed steel bar is an internal thread matched with the external thread of the deformed steel bar.
And in the clamping piece II matched with the threaded steel rod, sharp teeth are arranged on the small diameter of the screw teeth, or sharp teeth are arranged on the large diameter of the screw teeth, or sharp teeth are arranged on the small diameter and the large diameter of the screw teeth.
The threaded steel bar of the threaded steel bar and prestressed tendon connector is a threaded steel bar or a threaded alloy steel bar, and the prestressed tendon connected with the threaded steel bar is a steel strand, a steel wire inhaul cable, a steel wire rope or the conventional prestressed tendons in various forms.
The connecting anchor plate is a cylindrical body, and the cross section of the cylindrical body is square, circular or polygonal.
Due to the structure, the utility model relates to a deformed steel bar and prestressing tendons connector have following beneficial effect:
firstly, the installation is simple, the installation efficiency of construction is high:
1. before use in engineering, the clamping piece I3, the clamping piece II 8, the columnar elastic body I2 and the columnar elastic body II 6 are firstly used
And the hollow bolt I1 and the hollow bolt II 5 are assembled with the connecting anchor plate 9 into a whole, so that the installation procedures during construction are reduced, and the construction efficiency is improved.
2. The prestressed tendon and the deformed steel bar simply, conveniently and quickly pass through the clamping pieces by utilizing the jacking action of the columnar elastic bodies I2 and II 6 on the large end surfaces of the clamping pieces I3 and II 8, so that the installation difficulty is reduced, and the construction efficiency is improved.
Secondly, the anchoring reliability is high:
1. before using in the engineering, earlier with clamping piece I3, clamping piece II 8, column elastomer I2 and column elastomer II 6 and hollow bolt I1, hollow bolt II 5 assembles an organic wholely with connecting the anchor slab, can avoid in the work progress because operating space is not enough or the construction is not standard makes the clamping piece can't be knocked down, leads to the prestressing tendons to take place in the condition of stretch-draw in-process smooth silk, has improved product anchoring reliability.
2. The connector structure is provided with a columnar elastic body I2 and a columnar elastic body II 6, when the connector is used, the prestressed tendons and the threaded steel bars penetrate into the taper holes to increase the stress of the columnar elastic body I2 and the columnar elastic body II 6 and continue to compress, so that the clamping pieces I3 and the clamping pieces II 8 are opened; after the prestressed tendons and the deformed steel bars penetrate through the prestressed steel bars, the columnar elastic bodies I2 and the columnar elastic bodies II 6 are reversely stressed and are reduced to rebound, the clamping pieces I3 and the clamping pieces II 8 are tightly propped into the anchor plate taper holes, the steel strands and the deformed steel bars are clamped, and the anchoring reliability of products is improved.
3. Through utilizing the internal thread that sets up in the II 8 structures of clamping piece and the sharp tooth that sets up on the internal thread, reach mutual screens between the screw thread and the dual anti-skidding effect that sharp tooth embedding screw-thread steel stick body made the frictional force increase, promote the clamping performance to the screw-thread steel stick, improved product anchor reliability.
The three-dimensional connecting device is suitable for small-space working conditions, can be simultaneously connected with a plurality of threaded steel rods, and enlarges the application range of products:
1. firstly, a clamping piece I3, a clamping piece II 8, a columnar elastic body I2, a columnar elastic body II 6 and a hollow bolt I1 are assembled into a whole with a connecting anchor plate, then engineering application is carried out, the installation mode of the same threaded steel bar is changed from a knob type to an axial direct insertion type, the installation is convenient, and the installation is suitable for installation under the condition of small space.
2. After the installation mode is changed from a knob type to an axial direct insertion type, under the condition that the threaded steel rod is fixed, the connection quantity with the threaded steel rod can be increased from an original single hole to a plurality of holes, the application load of the product is improved, and the application range of the product is expanded.
The technical features of a screw-thread steel bar and tendon connector according to the present invention will be further described with reference to the accompanying drawings and embodiments.
Drawings
Fig. 1-2 are schematic diagrams of the overall structure of one of the twisted steel bar and steel wire connector of the embodiment of the present invention:
FIG. 1: front sectional view, fig. 2: FIG. 1 is a top view;
fig. 3 to 4 are schematic structural diagrams of a hollow bolt i and a hollow bolt ii of a threaded steel rod and steel strand connector according to an embodiment:
FIG. 3: front sectional view, fig. 4: the left side view of FIG. 3;
5-1 ~ 5-5 are the structure sketch map of the clamping piece II that is used for centre gripping screw-thread steel stick of a screw-thread steel stick and steel strand connector of embodiment:
FIG. 5-1: a front cross-sectional view of the device,
figure 5-2 is one of the enlarged schematic views of section a of figure 5-1,
FIG. 5-3 is a second enlarged view of portion A of FIG. 5-1,
figure 5-4 is a third enlarged schematic view of section a of figure 5-1,
FIG. 5-5 is a fourth enlarged view of portion A of FIG. 5-1;
FIGS. 6-1-9-2 are schematic views illustrating the structure of the connection anchor plate of the threaded steel rod and steel strand connector according to the embodiment;
6-1-6-2 are schematic structural views of the connecting anchor plate with rectangular cross section;
FIG. 6-1: front view, fig. 6-2: a left side cross-sectional view;
the cross section of each of the connection anchor plate shown in the figures 7-1 to 7-2 is square:
FIG. 7-1: front view, fig. 7-2: FIG. 7-1, cross-sectional view B-B;
the cross section of each of the connection anchor plate in the figures 8-1 to 8-2 is circular:
FIG. 8-1: front view, fig. 8-2: FIG. 8-1 is a cross-sectional view C-C;
the cross section of each of the connection anchor plate in the figures 9-1 to 9-2 is a regular hexagon, and the structure is as follows:
FIG. 9-1: front view, fig. 9-2: FIG. 9-1, cross-sectional view D-D;
FIGS. 10-1-10-2 are schematic views of the overall structure of a twisted steel bar and steel wire connector in the prior art;
FIG. 10-1: front sectional view, fig. 10-2: fig. 10-1 is a top view.
In FIGS. 1 to 9-2:
1-hollow bolt I, 11-clamping groove I, 2-columnar elastic body I, 3-clamping piece I; 4-stress tendon, 5-hollow bolt II, 51-clamping groove II, 6-columnar elastomer II;
7-a screw-thread steel bar and 8-a clamping piece II;
9-connecting anchor plate, 91-connecting anchor plate with rectangular cross section, 92-connecting anchor plate with square cross section, 93-connecting anchor plate with circular cross section and 94-connecting anchor plate with regular hexagon cross section;
911-taper hole I, 912-internal thread hole I;
921-taper hole II, 922-internal thread hole II;
in FIGS. 10-1 to 10-2:
1 a-hollow bolt, 3 a-working clamping piece; 9 a-connecting anchor plate.
Detailed Description
The first embodiment is as follows:
a connector of a deformed steel bar and a prestressed tendon:
as shown in fig. 1 and 2, the connector for the deformed steel bar and the prestressed tendon comprises a connecting anchor plate 9, a clamping piece I3, a clamping piece II 8, a hollow bolt I1, a hollow bolt II 5, a columnar elastic body I2 and a columnar elastic body II 6;
the connecting anchor plate 9 is used for realizing the connection between the prestressed tendon and the threaded steel bar, the connecting anchor plate 9 is a columnar body, the cross section of the columnar body is rectangular, one end face of the connecting anchor plate 9 is provided with 2 conical holes I911 for installing clamping pieces I3 and an internal threaded hole I912 for installing a hollow bolt I1, and the conical holes I911 and the internal threaded hole I912 are communicated;
the other end face of the connecting anchor plate 9 is provided with 1 conical hole II 921 for mounting the clamping piece II 8 and an internal threaded hole II 922 for mounting the hollow bolt II 5, and the conical hole II 921 and the internal threaded hole II 922 are communicated;
the taper directions of the taper holes of the taper hole I911 and the taper hole II 921 are opposite;
the clamping piece I3 is used for clamping the prestressed tendon; the clamping piece II 8 is used for clamping the threaded steel bar;
the hollow bolt I1 and the hollow bolt II 5 are of a through type, are provided with external threads (see figures 3 and 4), and are respectively screwed and matched with an internal thread hole I912 and an internal thread hole II 922 of the connecting anchor plate 9; the hollow bolt I1 and the hollow bolt II 5 are internally provided with a clamping groove I11 and a clamping groove II 51 respectively and used for realizing the installation of the columnar elastic body I2 and the columnar elastic body II 6;
in the installation state, the prestressed tendons 4 and the deformed steel bars 7 respectively penetrate through inner holes of the hollow bolt I1 and the hollow bolt II 5; the clamping piece I3 and the clamping piece II 8 are respectively installed in a taper hole I911 and a taper hole II 921 of the connecting anchor plate 9, the columnar elastic body I2 and the columnar elastic body II 6 are respectively installed in the hollow bolt I1 and the hollow bolt II 5 and are clamped by clamping grooves, the hollow bolt I1 and the hollow bolt II 5 are respectively screwed into an internal thread hole I912 and an internal thread hole II 922 of the connecting anchor plate, a flat position is designed on the excircle of the hollow bolt, the columnar elastic body I2 and the columnar elastic body II 6 are tightly pressed in a mode of rotating the hollow bolt I1 and the hollow bolt II 5, and the columnar elastic body has enough elasticity to tightly support the clamping piece after the prestressed tendon and the threaded steel bar are installed in place; the clamping piece is tightened after displacement; thereby clamping the prestressed tendons and the deformed steel bars and connecting the deformed steel bars and the prestressed tendons into a whole.
The columnar elastic bodies I2 and II 6 are elastic media in the connector, are used for jacking the clamping pieces in the use process, and in order to prevent the sliding of the prestress tension, the outer diameters of the columnar elastic bodies I2 and II 6 are slightly smaller than the inner hole diameters of the hollow bolt I1 and II 5, and the inner diameters of the columnar elastic bodies I2 and II 6 are larger than the outer diameters of the prestressed tendon and the threaded steel bar, so that the installation of the prestressed tendon and the threaded steel bar is not interfered.
In this embodiment, the columnar elastic bodies i 2 and ii 6 are compression springs i 2 and ii 6 (see fig. 1), and as a variation of the first embodiment of the present invention, the compression springs i 2 and ii 6 may also be replaced by high-elasticity columnar rubber blocks or columnar elastic bodies i 2 and ii 6 made of high-elasticity media.
In the embodiment of the present invention, as shown in fig. 5-2, the tooth shape of the clip ii 8 used with the deformed steel bar is an internal thread capable of matching with the external thread of the deformed steel bar.
As a variation of the embodiment of the present invention, the clamping piece ii 8 used in cooperation with the deformed steel bar may have other structures to further enhance the clamping force on the deformed steel bar; for example:
sharp teeth can be arranged on the small diameter of the screw teeth (see fig. 5-3); or sharp teeth are arranged on the major diameter of the screw teeth (see fig. 5-4); or sharp teeth are arranged on the small diameter and the large diameter of the screw teeth (see fig. 5-5).
Through utilizing the internal thread that sets up in the II 8 structures of clamping piece and the sharp tooth that sets up on the internal thread, reach mutual screens between the screw thread and the dual anti-skidding effect that sharp tooth embedding screw-thread steel stick body made the frictional force increase, promote the clamping performance to the screw-thread steel stick.
The threaded steel bar of the threaded steel bar and prestressed tendon connector can be a threaded steel bar or a threaded alloy steel bar, and the prestressed tendon connected with the threaded steel bar is a steel strand, a steel wire inhaul cable, a steel wire rope or the conventional prestressed tendons in various forms.
As a variation of the embodiment of the present invention, the shape of the connection anchor plate 9 can also be individually designed into other shapes according to the notch structure, for example: the cross section of the columnar body of the connection anchor plate 91 is rectangular (see fig. 6-1-6-2), the cross section of the columnar body of the connection anchor plate 92 is square (see fig. 7-1-7-2), the cross section of the columnar body of the connection anchor plate 93 is circular (see fig. 8-1-8-2), and the cross section of the columnar body of the connection anchor plate 93 is regular hexagon (see fig. 9-1-9-2); and the device can also be any other polygon, and is personalized according to the notch structure.
The number and the positions of the taper holes I911 and the taper holes II 921 which are arranged on the two end surfaces of the connecting anchor plate 91/92/93/94 are determined according to construction requirements, and the taper holes I911 and the taper holes II 921 can be arranged in a single row (see figure 6-1), a double row (see figure 7-1 and figure 9-1), a plurality of rows and a circumference (see figure 8-1).
One end face of the connecting anchor plate 91/92/93/94 is provided with m tapered holes I911 for installing clamping pieces I3 and an internal threaded hole I912 for installing a hollow bolt I1, and the tapered holes I911 and the internal threaded hole I912 are communicated;
the other end face of the connecting anchor plate 91/92/93/94 is provided with n conical holes II 921 for mounting the clips II 8 and an internal threaded hole II 922 for mounting the hollow bolt II 5, and the conical holes II 921 and the internal threaded hole II 922 are communicated;
the taper directions of the taper hole I911 and the taper hole II 921 are opposite;
the value ranges of m and n are as follows: m is an integer of 2 or more, and n is an integer of 1 or more.

Claims (6)

1. The utility model provides a screw-thread steel bar and prestressing tendons connector which characterized in that: the connector for the deformed steel bar and the prestressed tendon comprises a connecting anchor plate (9), a clamping piece I (3), a clamping piece II (8), a hollow bolt I (1), a hollow bolt II (5), a columnar elastic body I (2) and a columnar elastic body II (6);
one end face of the connecting anchor plate (9) is provided with m taper holes I (911) for mounting the clamping pieces I (3) and an internal thread hole I (912) for mounting the hollow bolt I (1), and the taper holes I (911) and the internal thread hole I (912) are communicated;
the other end face of the connecting anchor plate (9) is provided with n conical holes II (921) for mounting the clamping pieces II (8) and an internal threaded hole II (922) for mounting the hollow bolt II (5), and the conical holes II (921) and the internal threaded hole II (922) are communicated;
the taper directions of the taper holes of the taper hole I (911) and the taper hole II (921) are opposite; the value ranges of m and n are as follows: m is an integer greater than or equal to 2, n is an integer greater than or equal to 1;
the hollow bolt I (1) and the hollow bolt II (5) are of a through type, are provided with external threads and are respectively screwed and matched with an internal thread hole I (912) and an internal thread hole II (922) of a connecting anchor plate (9); a clamping groove I (11) and a clamping groove II (51) are respectively arranged in the hollow bolt I (1) and the hollow bolt II (5);
in the installation state, the prestressed tendons (4) and the deformed steel bars (7) respectively penetrate through inner holes of the hollow bolt I (1) and the hollow bolt II (5); the clamping piece I (3) and the clamping piece II (8) are respectively installed in a taper hole I (911) and a taper hole II (921) of a connecting anchor plate (9), the columnar elastic body I (2) and the columnar elastic body II (6) are respectively installed in the hollow bolt I (1) and the hollow bolt II (5) and are clamped by a clamping groove, the hollow bolt I (1) and the hollow bolt II (5) are respectively screwed into an internal thread hole I (912) and an internal thread hole II (922) of the connecting anchor plate, a flat position is designed on the excircle of the hollow bolt, and the columnar elastic body I (2) and the columnar elastic body II (6) are tightly pressed in a mode of rotating the hollow bolt I (1) and the hollow bolt II (5); the columnar elastic bodies I (2) and II (6) tightly support the clamping pieces after the prestressed tendons and the threaded steel bars are installed in place.
2. The connector of claim 1, wherein: columnar elastomer I (2), columnar elastomer II (6) are compression spring or high elastic column rubber block or the columnar elastomer of making with high elastic medium, the external diameter of columnar elastomer I (2), columnar elastomer II (6) slightly is less than hollow bolt I (1) and hollow bolt II (5) hole aperture, and columnar elastomer I (2), columnar elastomer II (6) internal diameter are greater than prestressing tendons and screw-thread steel bar external diameter.
3. The connector of claim 1, wherein: the tooth shape of the clamping piece II (8) matched with the deformed steel bar is an internal thread matched with the external thread of the deformed steel bar.
4. A threaded steel rod and tendon connector as claimed in claim 3 wherein: in the clamping piece II (8) matched with the deformed steel bar for use, sharp teeth are arranged on the small diameter of the screw teeth, or sharp teeth are arranged on the large diameter of the screw teeth, or sharp teeth are arranged on the small diameter and the large diameter of the screw teeth.
5. The connector of claim 1, wherein: the threaded steel bar of the threaded steel bar and prestressed tendon connector is a threaded steel bar or a threaded alloy steel bar, and the prestressed tendon connected with the threaded steel bar is a steel strand or a steel wire inhaul cable or a steel wire rope.
6. The connector of claim 1, wherein: the connecting anchor plate (9) is a cylindrical body, and the cross section of the cylindrical body is circular or polygonal.
CN201921484128.4U 2019-09-06 2019-09-06 Connector for threaded steel bar and prestressed tendon Active CN210946868U (en)

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CN201921484128.4U CN210946868U (en) 2019-09-06 2019-09-06 Connector for threaded steel bar and prestressed tendon

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Application Number Priority Date Filing Date Title
CN201921484128.4U CN210946868U (en) 2019-09-06 2019-09-06 Connector for threaded steel bar and prestressed tendon

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485457A (en) * 2019-09-06 2019-11-22 柳州欧维姆机械股份有限公司 A kind of screw thread rod iron and presstressed reinforcing steel connector and its construction method for connection

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110485457A (en) * 2019-09-06 2019-11-22 柳州欧维姆机械股份有限公司 A kind of screw thread rod iron and presstressed reinforcing steel connector and its construction method for connection

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