Connecting structure of self-sensing CFRP inhaul cable

Abstract

The utility model relates to a connecting structure of a self-sensing CFRP (carbon fiber reinforced plastic) inhaul cable, and aims to solve the technical problem that the accuracy and the efficiency of inhaul cable test data are affected as the CFRP inhaul cable cannot enter a tension test state quickly at the initial stage of the tension test because the CFRP inhaul cable cannot be tensioned preliminarily after being fixed due to the fact that a clamping piece is matched with a fixing seat in the current inhaul cable. Comprising a pull-bearing plate, a through hole is formed in the center of one side of the pull-bearing plate, an internal thread shaft barrel for allowing the adjusting assembly to be installed in a meshed mode is fixedly installed in the through hole, and the adjusting assembly is installed in the internal thread shaft barrel in a meshed mode. A plurality of mounting grooves are formed in one side of the tension bearing plate in an annular array mode, the CFRP inhaul cable tensioning device can tension an inhaul cable body after being fixed, so that the CFRP inhaul cable can rapidly enter a tensioning test state in the initial stage of the tensioning test, and the accuracy and efficiency of inhaul cable test data are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of debugging equipment, in particular to a connection structure of a self-sensing CFRP cable. Background Art

[0002] CFRP is divided into two categories: PAN-based CFRP and asphalt-based CFRP. The CFRP currently used in engineering is obtained by extruding and drawing multiple strands of continuous fibers bonded with resin. CFRP is widely used in engineering, such as bridge reinforcement, maintenance, and maintenance of various civil engineering projects. The structure in the project accumulates over time and suffers structural damage. The method of using carbon fiber structure reinforcement and maintenance is a common method in modern engineering technology. CFRP is also widely used in military, aviation, sports goods, racing and other fields.

[0003] When the current CFRP cables are being tensioned and debugged, it is often necessary to apply tension to the CFRP cables from both ends through a tensioning machine. When the CFRP cables are under tension, in order to prevent the CFRP cables from slipping, the ends of the CFRP cables are often fixed through a connecting structure.

[0004] However, in the existing technology, the cable is mostly fixed by using a clip in conjunction with a fixing seat. After fixation, the initial tensioning of the CFRP cable cannot be completed, so that the CFRP cable cannot quickly enter the tensioning test state at the initial stage of the tensioning test, affecting the accuracy and efficiency of the cable test data. In view of this, we propose a self-sensing CFRP cable connection structure. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a self-sensing CFRP cable connection structure to solve the technical problem that the current cable adopts a clip and a fixing seat, and the initial tensioning of the CFRP cable cannot be completed after fixation, so that the CFRP cable cannot quickly enter the tensioning test state at the initial stage of the tensioning test, affecting the accuracy and efficiency of the cable test data.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a connection structure of a self-sensing CFRP cable, including a cable fixing component for fixing the ends of multiple cable bodies and an adjustment component engaged and installed in the cable fixing component;

[0007] The cable fixing assembly comprises a tension plate, a through hole is provided at the center of one side of the tension plate, and an inner thread shaft cylinder for the adjustment assembly to be engaged and installed is fixedly installed in the through hole, a plurality of installation grooves are provided in a circular array on one side of the tension plate, and a locking assembly is fixedly installed in the installation groove, a plurality of groups of through holes are unlocked in a circular array on one side of the tension plate, and a group of the through holes is distributed on both sides of the installation groove, and the cable body is C-shaped and passes through the two through holes and the locking assembly;

[0008] The adjusting assembly comprises a screw rod, which is threadably mounted in the inner thread shaft tube, and one end of the screw rod is rotatably mounted with a fixing seat for connecting with the telescopic end of the tensioning machine.

[0009] Preferably, the locking assembly includes a U-shaped fixing piece fixedly arranged in the mounting groove, a locking movable seat and a locking fixed seat are movably arranged on both sides of the U-shaped fixing piece, and both ends of the U-shaped fixing piece are threadedly fitted with fastening nuts abutting against one side of the locking fixed seat.

[0010] Preferably, a locking groove is centrally provided at the center of one side of the locking fixed seat, and a locking key inserted into the locking groove is centrally configured at the center of one side of the locking movable seat, and an anti-slip sheet is fixedly installed at one side of the locking groove away from the locking key.

[0011] Preferably, the locking key and the anti-slip sheet have matching surfaces at the facing ends thereof for fitting against the outer surface of the cable body, and a locking cavity for clamping and fixing the cable body is formed between the locking key and the anti-slip sheet.

[0012] Preferably, two positioning keys are symmetrically constructed on one side of the locking movable seat, and two positioning grooves for correspondingly inserting the positioning keys are symmetrically opened on one side of the locking fixed seat.

[0013] Preferably, the locking movable seat and the two positioning keys are provided with a U-shaped groove for the U-shaped fixing member to pass through on one side away from the locking fixed seat, and a through hole is centrally provided on one side of the two positioning grooves for the corresponding U-shaped fixing member to pass through.

[0014] Preferably, a handwheel is fixedly mounted on one end of the screw rod, and a locking nut abutting against one side of the inner thread shaft tube is threadedly mounted on the outer edge surface of the screw rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The utility model fixes multiple cable bodies through a cable fixing assembly in cooperation with an adjusting assembly, and realizes tensioning test of the cable bodies with the help of a tensioning machine. When fixing the ends of the cable bodies, one end of the cable bodies needs to be passed through two through holes and a locking assembly in a C shape, thereby completing the fixation of the cable bodies by operating the locking assembly, and when the fixation is completed, the screw rod can be rotated to push the inner thread shaft cylinder meshing with the screw rod to drive the tension plate to slide along the screw rod, thereby completing the tensioning of the cable bodies, so that the CFRP cable can quickly enter the tensioning test state at the initial stage of the tensioning test, thereby improving the accuracy and efficiency of the cable test data.

[0017] 2. The utility model completes the fastening of the cable body through the locking assembly in cooperation with the tension plate. When fixing the end of the cable body, one end of the cable body needs to be passed through the two through holes and the locking cavity in a C shape, and then the two fastening nuts are tightened to pull the locking movable seat toward the locking fixed seat through the U-shaped fixing piece, thereby driving the locking key to cooperate with the anti-slip sheet to complete the clamping of the end of the cable body from both sides, and cooperate with the two positioning keys that gradually enter the two positioning grooves as the locking movable seat moves, thereby improving the stability of the cooperation between the locking movable seat and the locking fixed seat, and in combination with the anti-slip sheet and the locking key with matching surfaces, the end of the cable body is effectively clamped and fixed, and the cable body is bent and passed through the two through holes and the locking cavity, and the fixed method improves the friction after fixation, thereby improving the fastening effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model in a matching state with the cable;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the structure of the cable fixing assembly in the utility model in a disassembled state;

[0021] Figure 4 It is a plan view schematic diagram for showing the locking cavity on the locking assembly in the utility model;

[0022] Figure 5 It is a disassembled schematic diagram of the locking assembly in the utility model.

[0023] In the figure: 1. Cable fixing assembly; 101. Tension plate; 102. Inner thread shaft cylinder; 103. Mounting groove; 104. Through hole; 2. Cable body; 3. Adjustment assembly; 301. Screw rod; 302. Hand wheel; 303. Locking nut; 304. Fixed seat; 4. Locking assembly; 401. U-shaped fixing piece; 402. Locking movable seat; 403. Locking fixed seat; 404. Fastening nut; 405. Locking groove; 406. Locking key; 407. Anti-slip sheet; 408. Locking cavity; 409. U-shaped groove; 410. Positioning key; 411. Positioning groove. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0025] Example 1: A self-sensing CFRP cable connection structure, see Figure 1 , comprising a cable fixing assembly 1 for fixing the ends of a plurality of cable bodies 2 and an adjusting assembly 3 engaged and installed in the cable fixing assembly 1;

[0026] Furthermore, in order to enable the CFRP cable to quickly enter the tension test state at the initial stage of the tension test to improve the accuracy and efficiency of the cable test data, see Figure 1 , Figure 2 , Figure 3The cable fixing assembly 1 includes a tension plate 101, a through hole is provided at the center of one side of the tension plate 101, and an inner thread shaft cylinder 102 for engagement and installation of the adjustment assembly 3 is fixedly installed in the through hole, a plurality of installation grooves 103 are provided in a circular array on one side of the tension plate 101, and a locking assembly 4 is fixedly arranged in the installation groove 103, a plurality of groups of through holes 104 are unlocked in a circular array on one side of the tension plate 101, and a group of the through holes 104 are distributed on both sides of the installation groove 103, the cable body 2 is C-shaped and passes through the two through holes 104 and the locking assembly 4, the adjustment assembly 3 includes a screw rod 301, the screw rod 301 is threadedly installed in the inner thread shaft cylinder 102, and one end of the screw rod 301 is rotatably installed with a fixing seat 304 for connecting with the telescopic end of the tensioning machine, and one end of the screw rod 301 is fixedly installed A handwheel 302 is provided, and a locking nut 303 is threadedly mounted on the outer edge surface of the screw rod 301 and abuts against one side of the inner wire shaft tube 102. The cable fixing assembly 1 cooperates with the adjusting assembly 3 to fix multiple cable bodies 2, and the tensioning test of the cable body 2 is realized with the help of the tensioning machine. When fixing the end of the cable body 2, one end of the cable body 2 needs to be passed through the two through holes 104 and the locking assembly 4 in a C shape, so that the cable body 2 is fixed by operating the locking assembly 4, and when the fixation is completed, the screw rod 301 can be rotated to push the inner wire shaft tube 102 meshing with the screw rod 301 to drive the tension plate 101 to slide along the screw rod 301, thereby completing the tensioning of the cable body 2, so that the CFRP cable can quickly enter the tensioning test state at the initial stage of the tensioning test, thereby improving the accuracy and efficiency of the cable test data.

[0027] Furthermore, in order to increase the friction after fixing and improve the fastening effect, see Figure 1 , Figure 3 , Figure 4 , Figure 5The locking assembly 4 includes a U-shaped fixing piece 401 fixedly arranged in the installation groove 103, and a locking movable seat 402 and a locking fixed seat 403 are movably arranged on both sides of the U-shaped fixing piece 401, and both ends of the U-shaped fixing piece 401 are threadedly fitted with a fastening nut 404 that abuts against one side of the locking fixed seat 403. A locking groove 405 is centrally provided on one side of the locking fixed seat 403, and a locking key 406 inserted into the locking groove 405 is centrally configured on one side of the locking movable seat 402, and an anti-slip sheet 407 is fixedly installed on one side of the locking groove 405 away from the locking key 406. The locking key 406 and the anti-slip sheet 407 are provided at the facing ends thereof with a mating surface for fitting the outer surface of the cable body 2, and a locking cavity 408 for clamping and fixing the cable body 2 is formed between the locking key 406 and the anti-slip sheet 407. One side of the locking seat 402 is symmetrically constructed with two positioning keys 410, and one side of the locking seat 403 is symmetrically provided with two positioning grooves 411 for inserting the corresponding positioning keys 410. The locking seat 402 and the two positioning keys 410 are away from the locking seat 403 on one side thereof by providing a U-shaped groove 409 for the U-shaped fixing member 401 to pass through, and the two One side of the positioning groove 411 is centrally provided with a through hole for the corresponding U-shaped fixing piece 401 to pass through. The cable body 2 is fastened by the locking assembly 4 in cooperation with the tension plate 101. When fixing the end of the cable body 2, one end of the cable body 2 needs to be passed through the two through holes 104 and the locking cavity 408 in a C shape, and then the two fastening nuts 404 are tightened to pull the locking movable seat 402 toward the locking fixed seat 403 through the U-shaped fixing piece 401, thereby driving the locking key 406 to cooperate with the anti-slip sheet 407 to clamp the end of the cable body 2 from both sides, and cooperate with the two locking movable seats 402 to gradually enter the two fixed seats respectively as the locking movable seat 402 moves. The two positioning keys 410 in the positioning groove 411 improve the stability of the cooperation between the locking movable seat 402 and the locking fixed seat 403, and are combined with the anti-slip sheet 407 with matching surfaces and the locking key 406 to realize effective clamping and fixation of the end of the cable body 2, and cooperate with the cable body 2 to be bent through the two through holes 104 and the locking cavity 408, and fix to improve the friction after fixation, thereby improving the tightening effect. It is worth noting that the shape of the locking cavity 408 is affected by the distance between the locking key 406 with matching surfaces and the anti-slip sheet 407, and the locking cavities 408 of different shapes are consistent with the deformation at the compressed part of the cable body 2, and are always close to the surface of the cable body 2.

[0028] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A self-sensing CFRP cable connection structure, characterized in that: It comprises a cable fixing assembly (1) for fixing the ends of a plurality of cable bodies (2) and an adjustment assembly (3) engaged and installed in the cable fixing assembly (1); The cable fixing assembly (1) comprises a tension plate (101), a through hole is provided at the center of one side of the tension plate (101), and an inner thread shaft cylinder (102) for engagement and installation of the adjustment assembly (3) is fixedly installed in the through hole, a plurality of installation grooves (103) are provided in an annular array on one side of the tension plate (101), and a locking assembly (4) is fixedly installed in the installation groove (103), a plurality of groups of through holes (104) are unlocked in an annular array on one side of the tension plate (101), and a group of the through holes (104) is distributed on both sides of the installation groove (103), and the cable body (2) is C-shaped and passes through the two through holes (104) and the locking assembly (4); The adjustment assembly (3) comprises a screw rod (301), the screw rod (301) being threadably mounted in the inner thread shaft tube (102), and a fixing seat (304) for connecting to the telescopic end of the tensioning machine is rotatably mounted on one end of the screw rod (301).

2. The self-sensing CFRP cable connection structure according to claim 1, characterized in that: The locking assembly (4) comprises a U-shaped fixing member (401) fixedly arranged in the installation groove (103), a locking movable seat (402) and a locking fixed seat (403) being movably arranged on both sides of the U-shaped fixing member (401), and a fastening nut (404) abutting against one side of the locking fixed seat (403) being threadedly mounted on both ends of the U-shaped fixing member (401).

3. The connection structure of the self-sensing CFRP cable according to claim 2, characterized in that: A locking groove (405) is centrally provided on one side of the locking fixed seat (403), and a locking key (406) inserted into the locking groove (405) is centrally provided on one side of the locking movable seat (402), and an anti-slip sheet (407) is fixedly installed on one side of the locking groove (405) away from the locking key (406).

4. The self-sensing CFRP cable connection structure according to claim 3, characterized in that: The facing ends of the locking key (406) and the anti-slip sheet (407) are provided with matching surfaces for fitting against the outer surface of the cable body (2), and a locking cavity (408) for clamping and fixing the cable body (2) is formed between the locking key (406) and the anti-slip sheet (407).

5. The connection structure of the self-sensing CFRP cable according to claim 4, characterized in that: One side of the locking movable seat (402) is symmetrically structured with two positioning keys (410), and one side of the locking fixed seat (403) is symmetrically provided with two positioning grooves (411) for corresponding insertion of the positioning keys (410).

6. The connection structure of the self-sensing CFRP cable according to claim 5, characterized in that: A U-shaped groove (409) is provided on one side of the locking movable seat (402) and the two positioning keys (410) away from the locking fixed seat (403) for the U-shaped fixing member (401) to pass through, and a through hole is provided in the center of one side of the two positioning grooves (411) for the corresponding U-shaped fixing member (401) to pass through.

7. The self-sensing CFRP cable connection structure according to claim 1, characterized in that: A hand wheel (302) is fixedly mounted on one end of the screw rod (301), and a locking nut (303) is threadedly mounted on the outer edge surface of the screw rod (301) and abuts against one side of the inner thread shaft tube (102).

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