Carbon fiber cloth tensioning and positioning clamp for bridge crack repair

Abstract

The invention relates to the technical field of bridge maintenance and reinforcement, and discloses a carbon fiber cloth tensioning and positioning clamp for bridge crack repair, which comprises a mounting mechanism, a fixing plate and positioning plates symmetrically arranged on two sides of the fixing plate. Through cooperative cooperation of the pre-clamping assembly and the clamping assembly, prestress concentration during clamping can be effectively avoided, meanwhile, the clamping force can be adaptively changed along with the stretching length, carbon fiber cloth can be prevented from being damaged by excessive clamping, it is guaranteed that the cloth is stable and does not slide in the stretching process, and the positioning assembly and the fine adjustment assembly are matched with each other, so that the machining precision is improved. The tensioning position and tightness of the carbon fiber cloth can be accurately adjusted, stable installation and accurate positioning of the clamp can be achieved without drilling holes in the bottom of a bridge, flexible adjustment can be achieved even if tensioning looseness caused by material performance changes or construction errors occurs, the precision, efficiency and reliability of bridge crack repairing construction are remarkably improved, and the construction efficiency is improved. And the performance advantage of reinforcing the bridge by the carbon fiber cloth is fully exerted.

Description

Technical Field

[0001] The invention relates to the technical field of bridge repair and reinforcement, in particular to a carbon fiber cloth tensioning and positioning fixture for repairing bridge cracks. Background Art

[0002] As a key hub in the transportation network, bridges are subject to multiple factors such as vehicle loads, natural environmental erosion, and structural aging for a long time. They are prone to cracks, which seriously threaten the safety and durability of bridges. Carbon fiber cloth has become a commonly used material for bridge crack repair and structural reinforcement due to its excellent properties such as high strength, light weight, and corrosion resistance. During construction, by tensioning the carbon fiber cloth and fitting it tightly to the cracks, the expansion of cracks can be effectively limited and the bearing capacity of the bridge can be improved.

[0003] However, traditional structures often use a single mechanical compression method, which is prone to prestress concentration, affecting the use effect of the carbon fiber cloth. At the same time, the clamping force cannot be adaptively adjusted with the stretching length, and there is a risk of over-clamping, which damages the carbon fiber cloth. In addition, most clamps rely on drilling holes at the bottom of the bridge for fixation, which not only causes secondary damage to the bridge structure, but also has low positioning accuracy, making it difficult to accurately fit the cracks. In addition, the existing clamps lack flexible fine-tuning devices. When material properties change or construction errors cause the carbon fiber cloth to be tensioned and relaxed, subsequent adjustments cannot be made, making it difficult to meet the high precision, high efficiency and high reliability requirements of bridge crack repair projects. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned existing carbon fiber cloth tensioning and positioning fixture for repairing bridge cracks, the present invention is proposed.

[0005] Therefore, the object of the present invention is to provide a carbon fiber cloth tensioning and positioning fixture for repairing bridge cracks.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: comprising:

[0007] The mounting mechanism includes a fixing plate, positioning plates symmetrically arranged on both sides of the fixing plate, an inclined pressure plate arranged at the bottom of the positioning plate, a support member arranged on one side of the inclined pressure plate, and a mounting plate fixedly mounted on one side of the support member; and

[0008] The clamping mechanism includes a clamping component arranged in the inner cavity of the mounting mechanism, a pre-clamping component arranged inside the clamping component, a plurality of positioning components symmetrically arranged on both sides of the clamping component, and a fine-tuning component arranged on the top of the mounting plate.

[0009] As a preferred solution of the carbon fiber cloth tensioning and positioning fixture for bridge crack repairing described in the present invention, the support member includes a mounting seat fixedly installed on one end of the fixing plate, a pushing hole passing through the outer surface of the mounting seat, and a stretching port opened at the bottom of the pushing hole, and the stretching port is arranged at the bottom of the pushing hole.

[0010] As a preferred solution of the carbon fiber cloth tensioning and positioning clamp for bridge crack repairing described in the present invention, the clamping assembly includes a jack adapted to be installed on the outer surface of the mounting seat, a ramp pressure block fixedly connected to the output end of the jack, and a pressure slider in sliding contact with the inner wall of the fixed plate, the top of the ramp pressure block is in sliding contact with the inner wall of the ramp pressure plate, and the pressure slider is slidably connected to the inner wall of the fixed plate through a guide rail.

[0011] As a preferred solution of the carbon fiber cloth tensioning and positioning clamp for bridge crack repairing described in the present invention, the clamping assembly further includes a mounting groove opened at one end of the inclined pressure block, and positioning grooves symmetrically arranged on both sides of the inclined pressure block, the mounting groove simultaneously passes through the inclined pressure block and one end of the pressure sliding block, the positioning grooves are distributed in a linear array, one side of the positioning groove is opened on the outer surface of the inclined pressure block, and the other side is opened on the outer surface of the pressure sliding block.

[0012] As a preferred solution of the carbon fiber cloth tensioning and positioning clamp for bridge crack repairing described in the present invention, the pre-clamping component is provided on the lower clamping plate of the inner wall of the installation groove, the fixing openings are symmetrically opened on both sides of the lower clamping plate, the upper clamping plate is provided on the top of the lower clamping plate, the fixing bolt is provided on the top of the fixing opening, and the guide blocks are symmetrically provided on both sides of the installation groove, the fixing bolt is fixedly connected to the inner surface of the upper clamping plate, and the guide block is fixedly installed on the inner wall of the installation groove.

[0013] As a preferred solution of the carbon fiber cloth tensioning and positioning fixture for bridge crack repairing described in the present invention, the positioning assembly includes a positioning column arranged on the inner wall of the positioning groove, a movable groove opened at one end of the positioning column, and a limit rod in sliding contact with the inner surface of the movable groove, several of the limit rods are fixedly installed on the outer surface of the inclined pressure block, the top of the positioning column is in sliding contact with the inner wall of the inclined pressure block, and the bottom is fixedly connected to the inner wall of the pressure slider.

[0014] As a preferred solution of the carbon fiber cloth tensioning and positioning fixture for bridge crack repairing described in the present invention, the positioning component also includes a positioning inner hole opened at the bottom of the positioning column, and a positioning outer hole opened on the outer surface of the positioning plate. The positioning outer holes are distributed in a linear array on the outer surface of the positioning plate, and the centers of the positioning outer holes and the positioning inner holes are arranged on the same straight line.

[0015] As a preferred solution of the carbon fiber cloth tensioning and positioning fixture for bridge crack repairing described in the present invention, the fine-tuning component includes a fixed baffle rod laterally arranged on the inner side of the mounting plate, and support tubes symmetrically arranged on both sides of the mounting plate, the fixed baffle rod is fixedly connected to the outer surface of the mounting plate, the bottom of the support tube is rotatably connected to the inner wall of the mounting plate, and the inner wall of the support tube is provided with a thread.

[0016] As a preferred solution of the carbon fiber cloth tensioning and positioning fixture for bridge crack repairing according to the present invention, the fine-tuning assembly further includes a worm gear fixedly mounted on the outer surface of the support tube, a worm meshing with the worm gear, and a lifting column arranged on the inner side of the support tube, wherein the outer surface of the lifting column is threadedly connected to the inner surface of the support tube.

[0017] As a preferred solution of the carbon fiber cloth tensioning and positioning fixture for bridge crack repairing according to the present invention, the fine-tuning assembly further comprises a movable rod rotatably connected to the top of the lifting columns on both sides, and a transmission rod fixedly connected to the worm gears on both sides, the movable rod is arranged parallel to the fixed blocking rod, and the movable rod is rotatably connected to the inner surfaces of the lifting columns on both sides.

[0018] The beneficial effects of the present invention are as follows: through the coordinated cooperation of the pre-clamping component 202 and the clamping component 201, the concentration of prestress during clamping can be effectively avoided. At the same time, the clamping force can be adaptively changed with the stretching length, which can not only prevent excessive clamping from damaging the carbon fiber cloth, but also ensure that the cloth is stable and does not slip during the tensioning process. The positioning component 203 and the fine-tuning component 204 cooperate with each other to accurately adjust the tensioning position and tightness of the carbon fiber cloth. There is no need to drill holes at the bottom of the bridge to achieve stable installation and precise positioning of the clamp. Even if tensioning is relaxed due to changes in material properties or construction errors, it can be flexibly adjusted, which significantly improves the accuracy, efficiency and reliability of bridge crack repair construction and gives full play to the performance advantages of carbon fiber cloth in strengthening bridges. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0021] Figure 2 Schematic diagram of the support structure of the present invention.

[0022] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention.

[0023] Figure 4 It is a schematic diagram of the partial structure of the clamping assembly of the present invention.

[0024] Figure 5 It is a schematic diagram of the local structure of the pre-clamping component of the present invention.

[0025] Figure 6 For the present invention Figure 4 Schematic diagram of the structure at point A in the middle.

[0026] Figure 7 It is a partial cross-sectional schematic diagram of the fine-tuning component of the present invention.

[0027] Figure 8 For the present invention Figure 7 Schematic diagram of the structure at point B in the middle.

[0028] In the figure: 100, mounting mechanism; 101, fixing plate; 102, positioning plate; 103, inclined pressure plate; 104, support member; 104a, support seat; 104b, push hole; 104c, stretching port; 105, mounting plate; 200, clamping mechanism; 201, clamping assembly; 201a, jack; 201b, inclined pressure block; 201c, pressure slider; 201d, mounting groove; 201e, positioning groove; 202, pre-clamping assembly; 202a, lower clamping plate; 2 02b, fixing mouth; 202c, upper splint; 202d, fixing bolt; 202e, guide block; 203, positioning assembly; 203a, positioning column; 203b, movable groove; 203c, limiting rod; 203d, positioning inner hole; 203e, positioning outer hole; 204, fine-tuning assembly; 204a, fixed stop rod; 204b, support tube; 204c, worm gear; 204d, worm; 204e, lifting column; 204f, movable rod; 204g, transmission rod. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive of other embodiments.

[0032] Furthermore, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, when describing the embodiments of the present invention, cross-sectional views illustrating device structures may be partially enlarged and not to scale. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, the three-dimensional dimensions of length, width, and depth should be included.

[0033] Example 1

[0034] Reference Figure 1-8 , which is the first embodiment of the present invention, provides a carbon fiber cloth tensioning and positioning fixture for bridge crack repair, the device comprising:

[0035] The mounting mechanism 100 includes a fixing plate 101, positioning plates 102 symmetrically arranged on both sides of the fixing plate 101, an inclined pressure plate 103 arranged at the bottom of the positioning plate 102, a support member 104 arranged on one side of the inclined pressure plate 103, and a mounting plate 105 fixedly mounted on one side of the support member 104; and

[0036] The clamping mechanism 200 includes a clamping assembly 201 arranged in the inner cavity of the mounting mechanism 100, a pre-clamping assembly 202 arranged inside the clamping assembly 201, a plurality of positioning assemblies 203 symmetrically arranged on both sides of the clamping assembly 201, and a fine-tuning assembly 204 arranged on the top of the mounting plate 105.

[0037] It should be noted that the fixing plate 101 is used to provide basic support for the entire clamp, the positioning plate 102 is used to limit the position of the clamping assembly 201, and during the process of tensioning the carbon fiber cloth by the clamping assembly 201, the inclined pressure plate 103 applies pressure to the inclined pressure block 201b by tilting the plate surface, the mounting plate 105 is used to install the fine-tuning assembly 204, the pre-clamping assembly 202 is used for preliminary fixation before clamping, the positioning assembly 203 is used to lock the horizontal position of the clamping assembly 201, and the fine-tuning assembly 204 is used to perform tensioning fine-tuning after the clamp is clamped.

[0038] Specifically, the support member 104 includes a mounting seat 104a fixedly mounted on one end of the fixing plate 101, a push hole 104b passing through the outer surface of the mounting seat 104a, and a stretching opening 104c opened at the bottom of the push hole 104b. The stretching opening 104c is set at the bottom of the push hole 104b.

[0039] It should be noted that the push hole 104b provides a channel for the movement of the output end of the jack 201a, and the stretching opening 104c allows the carbon fiber cloth to pass through it.

[0040] Furthermore, the clamping assembly 201 includes a jack 201a adapted to be mounted on the outer surface of the mounting seat 104a, a ramp block 201b fixedly connected to the output end of the jack 201a, and a pressure slider 201c in sliding contact with the inner wall of the fixed plate 101. The top of the ramp block 201b is in sliding contact with the inner wall of the ramp plate 103, and the pressure slider 201c is slidably connected to the inner wall of the fixed plate 101 through a guide rail.

[0041] It should be noted that the inner surfaces of the inclined pressure block 201b and the pressure slider 201c are both provided with rubber anti-slip pads. The inner surface of the inclined pressure block 201b is designed as an inclined surface. The inclined pressure plate 103 slides in contact with the inclined surface of the inclined pressure block 201b. The contact surface is also designed as an inclined surface at the same angle. The jack 201a is provided on one side of the mounting seat 104a as a power source to drive the inclined pressure block 201b to move. When the inclined pressure block 201b moves, it drives the pressure slider 201 through a number of positioning components 203 provided on both sides. c moves synchronously, and a track for the sliding and guiding of the compressed slider 201c is provided between the compressed slider 201c and the fixed plate 101. The inclined pressure block 201b and the compressed slider 201c can only move along the track direction when moving. During movement, the inner inclined surface of the inclined pressure plate 103 presses the bottom of the inclined pressure block 201b, so that the inclined pressure block 201b and the compressed slider 201c are clamped, and the carbon fiber cloth is stretched and clamped at the same time. The friction force generated by the clamping is sufficient to clamp the carbon fiber cloth.

[0042] Furthermore, the clamping assembly 201 also includes an installation groove 201d opened at one end of the inclined pressure block 201b, and positioning grooves 201e symmetrically arranged on both sides of the inclined pressure block 201b. The installation groove 201d passes through the inclined pressure block 201b and one end of the pressure slider 201c at the same time. The positioning grooves 201e are distributed in a linear array. One side of the positioning groove 201e is opened on the outer surface of the inclined pressure block 201b, and the other side is opened on the outer surface of the pressure slider 201c.

[0043] It should be noted that the installation groove 201d is used to place the pre-clamping component 202, and its size is adapted to the size of the pre-clamping component 202. When the clamping component 201 is clamped, the inner wall of the installation groove 201d will press and clamp the outer surface of the pre-clamping component 202, and the positioning groove 201e is used to provide an installation position for the positioning component 203.

[0044] Among them, the pre-clamping component 202 is arranged on the lower clamping plate 202a of the inner wall of the installation groove 201d, the fixing openings 202b are symmetrically opened on both sides of the lower clamping plate 202a, the upper clamping plate 202c is arranged on the top of the lower clamping plate 202a, the fixing bolt 202d is arranged on the top of the fixing opening 202b, and the guide blocks 202e are symmetrically arranged on both sides of the installation groove 201d, the fixing bolt 202d is fixedly connected to the inner surface of the upper clamping plate 202c, and the guide block 202e is fixedly installed on the inner wall of the installation groove 201d.

[0045] It should be noted that the fixing bolt 202d and the fixing port 202b have a slight interference fit, and the contact surfaces of the lower clamping plate 202a and the upper clamping plate 202c are provided with anti-slip grooves. The carbon fiber cloth is placed between the lower clamping plate 202a and the upper clamping plate 202c, and the carbon fiber cloth can be initially clamped by pressing hard. This process can be completed before the entire fixture is installed to achieve quick installation. The inner side of the guide block 202e is provided with an inclined guide slope, which is used to quickly install the pre-clamping component 202 in the inner cavity of the installation groove 201d.

[0046] Preferably, the positioning assembly 203 includes a positioning column 203a arranged on the inner wall of the positioning groove 201e, a movable groove 203b opened at one end of the positioning column 203a, and a limiting rod 203c in sliding contact with the inner surface of the movable groove 203b. Several limiting rods 203c are fixedly installed on the outer surface of the inclined pressure block 201b, the top of the positioning column 203a is in sliding contact with the inner wall of the inclined pressure block 201b, and the bottom is fixedly connected to the inner wall of the pressure slider 201c.

[0047] It should be noted that the positioning column 203a is used for the synchronous movement of the inclined pressure block 201b and the pressure slider 201c in the horizontal direction. When the inclined pressure block 201b squeezes the pressure slider 201c downward, the inclined pressure block 201b slides in contact with the positioning groove 201e. When the inclined pressure block 201b and the pressure slider 201c move away from each other, the limit rod 203c slides upward along the movable groove 203b to prevent the inclined pressure block 201b and the pressure slider 201c from falling out.

[0048] Specifically, the positioning component 203 also includes a positioning inner hole 203d opened at the bottom of the positioning column 203a, and a positioning outer hole 203e opened on the outer surface of the positioning plate 102. The positioning outer holes 203e are distributed in a linear array on the outer surface of the positioning plate 102, and the centers of the positioning outer holes 203e and the positioning inner holes 203d are set on the same straight line.

[0049] It should be noted that when the clamping assembly 201 moves to a suitable position, the outer positioning hole 203e and the inner positioning hole 203d are tightened with bolts to fix the clamping assembly 201.

[0050] Furthermore, the fine-tuning assembly 204 includes a fixed baffle 204a laterally arranged on the inner side of the mounting plate 105, and a support tube 204b symmetrically arranged on both sides of the mounting plate 105. The fixed baffle 204a is fixedly connected to the outer surface of the mounting plate 105, and the bottom of the support tube 204b is rotatably connected to the inner wall of the mounting plate 105, and the inner wall of the support tube 204b is provided with a thread.

[0051] It should be noted that the fixed blocking rod 204a is used to guide the carbon fiber cloth to a position closer to the bottom of the bridge, so as to facilitate its adhesion and fixation to the crack, and a circular track is provided at the bottom of the support tube 204b to facilitate its rotation.

[0052] Furthermore, the fine-tuning assembly 204 also includes a worm gear 204c fixedly mounted on the outer surface of the support tube 204b, a worm 204d meshing with the worm gear 204c, and a lifting column 204e arranged on the inner side of the support tube 204b, wherein the outer surface of the lifting column 204e is threadedly connected to the inner surface of the support tube 204b.

[0053] Preferably, the fine-tuning assembly 204 also includes a movable rod 204f rotatably connected to the top of the lifting columns 204e on both sides, and a transmission rod 204g fixedly connected to the worm gear 204d on both sides. The movable rod 204f is arranged parallel to the fixed blocking rod 204a, and the movable rod 204f is rotatably connected to the inner surface of the lifting columns 204e on both sides.

[0054] It should be noted that the movable rod 204f is used to fine-tune the tensioning tightness of the carbon fiber cloth. The lifting columns 204e on both sides limit their own rotation through the movable rod 204f. An output shaft for driving the entire component is provided on one side of the fine-tuning component 204. When the worm 204d is rotated, the worm wheel 204c engaged with it is driven to rotate, causing the support tube 204b to rotate, and then driving the lifting columns 204e threadedly connected to its inner surface to rise and fall. The transmission rod 204g synchronizes the rotation of the worm 204d on both sides, realizing the synchronous lifting and lowering of the lifting columns 204e on both sides, and ensuring the level of the movable rod 204f during adjustment.

[0055] During use, the fixing plate 101 is firmly fixed to the bridge using expansion bolts during installation, and then the other components of the device except the pre-clamping assembly 202 are installed in sequence, the carbon fiber cloth is placed flat on the clamping surface of the lower clamping plate 202a, and the position is adjusted so that it is aligned with the lower clamping plate 202a, and the upper clamping plate 202c is used to press the lower clamping plate 202a through the fixing bolt 202d and the fixing port 202b, so that the carbon fiber cloth is pre-clamped between the lower clamping plate 202a and the upper clamping plate 202c, completing the preliminary clamping of the carbon fiber cloth. Fix the pre-clamping assembly 202 assembled in the mounting groove 201d, pull the carbon fiber cloth through the gap between the clamping assemblies 201, through the stretching port 104c, and fix the end to complete the installation. Then install the jack 201a on the outer surface of the mounting seat 104a, and fix the inclined pressure block 201b to the output end of the jack 201a to ensure the reliability of the connection. Install the pressure slider 201c on the guide rail on the inner wall of the fixed plate 101 so that it can slide smoothly.

[0056] During clamping, the jack 201a is started, and the output end of the jack 201a pushes the inclined pressure block 201b to slide upward along the inner wall of the inclined pressure plate 103. During the sliding process, the inclined pressure block 201b drives the pressure slider 201c to slide along the guide rail through the positioning component 203. During the sliding process, the inner wall of the inclined pressure plate 103 continuously squeezes the inclined pressure block 201b, so that the pressure between the inclined pressure block 201b and the pressure slider 201c continuously increases, forming a clamping of the carbon fiber cloth. When the inclined pressure block 201b and the pressure slider 201c clamp the carbon fiber cloth, they squeeze the pre-pressing component 202. The pre-pressing components 202 are clamped tightly, and the two work together to tension the carbon fiber cloth. When the designed tensioning force is reached, the clamping component 201 is pushed to align the positioning inner hole 203d at the bottom of the positioning column 203a with the positioning outer hole 203e on the outer surface of the positioning plate 102. The positioning bolt is inserted through the positioning inner hole 203d and the positioning outer hole 203e to fix the positioning column 203a to the positioning plate 102, thereby completing the positioning of the clamping mechanism 200 on the mounting mechanism 100 and ensuring the stability of the clamp during the tensioning process.

[0057] When fine adjustments to the prestress are needed after tensioning, the output shaft drives the transmission rod 204g to rotate, and the transmission rod 204g drives the worms 204d on both sides to rotate synchronously. The worm 204d engages with the worm wheel 204c, driving the worm wheel 204c to rotate, thereby driving the support tube 204b to rotate. Since the inner wall of the support tube 204b is threadedly connected to the outer surface of the lifting column 204e, the lifting column 204e is driven to rise and fall when the support tube 204b rotates, and finally drives the movable rod 204f to rise and fall, and fine-tune the tension of the carbon fiber cloth to ensure that the carbon fiber cloth can effectively repair the cracks in the bridge and achieve the best reinforcement effect.

[0058] In summary, the installation mechanism 100 provides basic support and installation positioning for the entire clamp, while effectively preventing the clamping mechanism 200 from being corroded by the environment. The inclined pressure plate 103 cooperates with the inclined pressure block 201b and the jack 201a to provide clamping pressure for the clamping assembly 201. In the clamping mechanism 200, the pre-clamping assembly 202 realizes the initial fixation of the carbon fiber cloth, which is convenient for quick installation. The anti-slip texture and light interference fit design of the pre-clamping assembly 202 effectively improve the pre-clamping effect. The clamping assembly 201 drives the inclined pressure block 201b and the pressure slider 201c through the jack 201a, and realizes the tensioning and clamping of the carbon fiber cloth under the action of the inclined pressure plate 103, avoiding the situation of prestress concentration. At the same time, the clamping force can be changed with the stretching length to prevent excessive clamping of the carbon fiber cloth. The positioning component 203 ensures the locking of the horizontal position of the clamping component 201, and there is no need to drill holes for fixing the bottom of the bridge. The fine-tuning component 204 uses the transmission of the worm gear 204c and the worm 204d and the thread transmission to realize the synchronous lifting of the lifting columns 204e on both sides through the transmission rod 204g, driving the movable rod 204f to accurately fine-tune the tensioning position and tightness of the carbon fiber cloth. If the carbon fiber cloth is subsequently relaxed due to material weakness or other conditions, it can also be adjusted through the fine-tuning component to ensure that the clamp accurately and efficiently completes the tensioning and positioning of the carbon fiber cloth during bridge crack repair.

[0059] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, directional changes, etc.) without departing substantially from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also equivalent structures. Other replacements, modifications, changes, and omissions may be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present invention. Therefore, the invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0060] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0061] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. Carbon fiber cloth tensioning and positioning fixture for bridge crack repair, characterized by: include, The mounting mechanism (100) comprises a fixing plate (101), positioning plates (102) symmetrically arranged on both sides of the fixing plate (101), an inclined pressure plate (103) arranged at the bottom of the positioning plate (102), a support member (104) arranged on one side of the inclined pressure plate (103), and a mounting plate (105) fixedly mounted on one side of the support member (104); and, The clamping mechanism (200) comprises a clamping assembly (201) arranged in the inner cavity of the mounting mechanism (100), a pre-clamping assembly (202) arranged inside the clamping assembly (201), a plurality of positioning assemblies (203) symmetrically arranged on both sides of the clamping assembly (201), and a fine-tuning assembly (204) arranged on the top of the mounting plate (105).

2. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 1, characterized in that: The support member (104) comprises a mounting seat (104a) fixedly mounted on one end of the fixing plate (101), a push hole (104b) penetrating the outer surface of the mounting seat (104a), and a stretching opening (104c) opened at the bottom of the push hole (104b), wherein the stretching opening (104c) is arranged at the bottom of the push hole (104b).

3. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 2, characterized in that: The clamping assembly (201) comprises a jack (201a) adapted to be mounted on the outer surface of the mounting seat (104a), an inclined pressure block (201b) fixedly connected to the output end of the jack (201a), and a pressure slider (201c) in sliding contact with the inner wall of the fixed plate (101), wherein the top of the inclined pressure block (201b) is in sliding contact with the inner wall of the inclined pressure plate (103), and the pressure slider (201c) is in sliding connection with the inner wall of the fixed plate (101) via a guide rail.

4. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 3, characterized in that: The clamping assembly (201) further comprises a mounting groove (201d) provided at one end of the inclined pressure block (201b), and positioning grooves (201e) symmetrically arranged on both sides of the inclined pressure block (201b); the mounting groove (201d) simultaneously passes through the inclined pressure block (201b) and one end of the pressure sliding block (201c); the positioning grooves (201e) are distributed in a linear array; one side of the positioning grooves (201e) is provided on the outer surface of the inclined pressure block (201b), and the other side is provided on the outer surface of the pressure sliding block (201c).

5. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 4, characterized in that: The pre-clamping assembly (202) comprises a lower clamping plate (202a) provided on the inner wall of the installation groove (201d), fixing openings (202b) symmetrically provided on both sides of the lower clamping plate (202a), an upper clamping plate (202c) provided on the top of the lower clamping plate (202a), a fixing bolt (202d) provided on the top of the fixing opening (202b), and guide blocks (202e) symmetrically provided on both sides of the installation groove (201d), wherein the fixing bolt (202d) is fixedly connected to the inner surface of the upper clamping plate (202c), and the guide block (202e) is fixedly installed on the inner wall of the installation groove (201d).

6. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 5, characterized in that: The positioning assembly (203) comprises a positioning column (203a) arranged on the inner wall of the positioning groove (201e), a movable groove (203b) opened at one end of the positioning column (203a), and a limiting rod (203c) in sliding contact with the inner surface of the movable groove (203b), and a plurality of the limiting rods (203c) are fixedly mounted on the outer surface of the inclined pressure block (201b), the top of the positioning column (203a) is in sliding contact with the inner wall of the inclined pressure block (201b), and the bottom is fixedly connected to the inner wall of the pressure sliding block (201c).

7. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 6, characterized in that: The positioning assembly (203) further includes a positioning inner hole (203d) opened at the bottom of the positioning column (203a), and a positioning outer hole (203e) opened on the outer surface of the positioning plate (102). The positioning outer holes (203e) are distributed in a linear array on the outer surface of the positioning plate (102), and the centers of the positioning outer holes (203e) and the positioning inner holes (203d) are arranged on the same straight line.

8. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 7, characterized in that: The fine-tuning assembly (204) comprises a fixed blocking rod (204a) laterally arranged on the inner side of the mounting plate (105), and a support tube (204b) symmetrically arranged on both sides of the mounting plate (105), wherein the fixed blocking rod (204a) is fixedly connected to the outer surface of the mounting plate (105), and the bottom of the support tube (204b) is rotatably connected to the inner wall of the mounting plate (105), and the inner wall of the support tube (204b) is provided with a thread.

9. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 8, characterized in that: The fine-tuning assembly (204) further comprises a worm gear (204c) fixedly sleeved on the outer surface of the support tube (204b), a worm (204d) meshing with the worm gear (204c), and a lifting column (204e) arranged on the inner side of the support tube (204b), wherein the outer surface of the lifting column (204e) is threadedly connected to the inner surface of the support tube (204b).

10. The carbon fiber cloth tensioning and positioning fixture for bridge crack repair according to claim 9, characterized in that: The fine-tuning assembly (204) further includes a movable rod (204f) rotatably connected to the tops of the lifting columns (204e) on both sides, and a transmission rod (204g) fixedly connected to the worm gears (204d) on both sides. The movable rod (204f) is arranged parallel to the fixed blocking rod (204a), and the movable rod (204f) is rotatably connected to the inner surfaces of the lifting columns (204e) on both sides.

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