Rod connection device for FRP composite materials

Abstract

The rod connecting device of FRP composite material includes an FRP rod, an end nut, an outer sleeve, an outer locking sleeve, an inner locking sleeve, an inner sleeve, a clamping wedge, a length adjusting screw, a length adjusting nut, and a length adjusting rod; one end of the FRP rod is provided with an opening along the radial direction, and the clamping wedge is installed in the opening; one end of the FRP rod where the clamping wedge is installed is connected to one end of the length adjusting screw, and the other end of the length adjusting screw is connected to the length adjusting rod through the length adjusting nut; an outer sleeve is arranged outside the FRP rod; an end nut, an outer sleeve, an outer locking sleeve, an inner locking sleeve, and an inner sleeve are sequentially arranged between the outer sleeve and the FRP rod from left to right; the connection of the FRP composite material rod is completed by the mutual combination of the end nut, the outer sleeve, the outer locking sleeve, the inner locking sleeve, the inner sleeve, and the clamping wedge; the length adjustment after connection is completed by the length adjusting rod, the length adjusting sleeve, and the length adjusting rod; it has the characteristics of reliable connection and adjustable length.

Description

Technical Field

[0001] The present invention belongs to the technical field of FRP composite material connection, and in particular relates to a rod connection device of FRP composite material, and in particular to a rod connection method of FRP composite material. Background Art

[0002] The connection method of FRP composite materials is a key issue in the design of composite material structures. Due to the special characteristics of FRP composite materials, it has never been well solved, which has greatly hindered the widespread use of FRP composite materials in various fields. Therefore, how to solve the connection method of FRP composite materials and ensure its safety and reliability is an important issue that needs to be solved urgently in the field of FRP composite materials. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention aims to provide an FRP composite rod connection device that does not damage the cross-sectional area of the FRP composite rod and ensures safe and reliable connection of the FRP composite rod. The device can be widely used in various applications of connecting FRP composite rods, and features reliable connection, wide applicability, and easy length adjustment.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a rod connection device of FRP composite material, including an FRP rod, an end nut, an outer sleeve, an outer locking sleeve, an inner locking sleeve, an inner sleeve, a clamping wedge, a length adjustment screw, a length adjustment nut, and a length adjustment rod; an opening is provided in the radial direction at one end of the FRP rod, and a clamping wedge is installed in the opening; one end of the FRP rod on which the clamping wedge is installed is connected to one end of the length adjustment screw, and the other end of the length adjustment screw is connected to the length adjustment rod through the length adjustment nut; an outer sleeve is provided on the outside of the FRP rod; an end nut, an outer sleeve, an outer locking sleeve, an inner locking sleeve, and an inner sleeve are arranged in sequence from left to right between the outer sleeve and the FRP rod.

[0005] The end nut blocks the left port of the outer sleeve.

[0006] Compared with the prior art, the present invention has the following beneficial effects:

[0007] 1) The connection method of this FRP composite material is a combined connection, which uses the end nut, outer sleeve, outer locking sleeve, inner locking sleeve, inner sleeve and clamping wedge to complete the connection of the FRP composite material rod, and uses the length adjustment rod, length adjustment sleeve and length adjustment rod to complete the length adjustment after connection.

[0008] 2) The end nut is combined with the outer sleeve to form a complete system, ensuring that other components interact with each other to complete the locking of the FRP composite rod.

[0009] 3) The outer locking sleeve and the inner locking sleeve are both wedge-shaped in the axial section (their radial dimensions are variable). The two interact through the locking of the end nut to produce radial changes, and can complete the partial radial locking of the FRP composite rod to generate axial tension. This is used to compensate for the minimal cross-sectional loss of the rod caused by the insertion of the clamping wedge.

[0010] 4) After the clamping wedge is inserted into the FRP composite rod, the outer diameter of the end of the FRP composite rod gradually expands in a gradient manner. The form and size of the outer diameter expansion match the form and size of the inner diameter of the inner sleeve. Thus, the radial locking of the FRP composite rod is further completed to generate axial tension.

[0011] 5) The connection of the overall FRP composite rod is completed under the combined action of the two locking parts.

[0012] 6) The length adjustment rod, length adjustment sleeve, and length adjustment rod jointly complete the connection length adjustment to ensure the accuracy of the connection length. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the present invention.

[0014] In the figure: 1 - FRP rod, 2 - end nut, 3 - outer sleeve, 4 - outer locking sleeve, 5 - inner locking sleeve, 6 - inner sleeve, 7 - clamping wedge, 8 - length adjustment screw, 9 - length adjustment nut, 10 - length adjustment rod. DETAILED DESCRIPTION OF THE INVENTION

[0015] The present invention will be further described in detail below in conjunction with specific embodiments and the drawings.

[0016] Refer to Figure 1 , the rod connection device for FRP composite materials, including FRP rod 1, end nut 2, outer sleeve 3, outer locking sleeve 4, inner locking sleeve 5, inner sleeve 6, clamping wedge 7, length adjustment screw 8, length adjustment nut 9, length adjustment rod 10; one end of the FRP rod 1 is provided with an opening in the radial direction, and the clamping wedge 7 is installed in the opening; one end of the FRP rod 1 where the clamping wedge 7 is installed is connected to one end of the length adjustment screw 8, and the other end of the length adjustment screw 8 is connected to the length adjustment rod 10 through the length adjustment nut 9; the outer side of the FRP rod 1 is provided with an outer sleeve 3; between the outer sleeve 3 and the FRP rod 1, the end nut 2, outer sleeve 3, outer locking sleeve 4, inner locking sleeve 5, and inner sleeve 6 are arranged in sequence from left to right; the end nut 2 seals the left port of the outer sleeve 3.

[0017] The working principle of the present invention is:

[0018] The connection method of this FRP composite material is a combined connection. The end nut 2, outer sleeve 3, outer locking sleeve 4, inner locking sleeve 5, inner sleeve 6 and clamping wedge 7 are combined with each other to complete the connection of the FRP composite material rod; the length adjustment rod, length adjustment sleeve and length adjustment rod are used to complete the length adjustment after connection.

[0019] The tooling procedure of this device is as follows:

[0020] 1) Open one end of the FRP rod 1 radially, and its axial length is the same as the length of the clamping wedge 7;

[0021] 2) Install the end nut 2, outer locking sleeve 4, inner locking sleeve 5, and inner sleeve 6 into the outer sleeve 3 in sequence (the end nut 2 is screwed in by half);

[0022] 3) Install the clamping wedge 7 into one end of the FRP rod 1, and insert it into the outer sleeve 3 together from the end where the clamping wedge 7 is not installed;

[0023] 4) After the FRP rod 1 and the clamping wedge 7 are pulled in by the puller, lock the end nut 2. The entire connection process is completed.

Claims

1. The fixture program for the rod connection device of FRP composite materials, characterized in that, The rod connecting device includes an FRP rod (1), an end nut (2), an outer sleeve (3), an outer locking sleeve (4), an inner locking sleeve (5), an inner sleeve (6), a clamping wedge (7), a length adjusting screw (8), a length adjusting nut (9), and a length adjusting rod (10); one end of the FRP rod (1) is provided with an opening in the radial direction, and the clamping wedge (7) is installed in the opening; one end of the FRP rod (1) where the clamping wedge (7) is installed is connected to one end of the length adjusting screw (8), and the other end of the length adjusting screw (8) is connected to the length adjusting rod (10) through the length adjusting nut (9); an outer sleeve (3) is arranged outside the FRP rod (1); an end nut (2), an outer locking sleeve (4), an inner locking sleeve (5), and an inner sleeve (6) are sequentially arranged between the outer sleeve (3) and the FRP rod (1) from left to right; The end nut (2) seals the left port of the outer sleeve (3); The tooling procedure of the rod connecting device is as follows: 1) Open one end of the FRP rod (1) radially, and its axial length is the same as the length of the clamping wedge (7); 2) Install the end nut (2), the outer locking sleeve (4), the inner locking sleeve (5), and the inner sleeve (6) into the outer sleeve (3) in sequence; 3) Install the clamping wedge (7) into one end of the FRP rod (1), and insert it into the outer sleeve (3) together from the end where the clamping wedge (7) is not installed; 4) After the FRP rod (1) and the clamping wedge (7) are pulled in by a puller, lock the end nut (2) to complete the entire connection process.

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