Bridge detection device based on magnetic flux

Abstract

The utility model provides a bridge detection device based on magnetic flux, which relates to the technical field of bridge detection and comprises a frame, a coil wound outside the frame, a protective shell arranged outside the coil, a fastening nut arranged at the top of the frame, handles arranged on two sides of the fastening nut, and four fixing frames arranged in the middle of the fastening nut. The damping blocks are arranged at the tops of the four fixing frames, the anti-skid pads on the inner surfaces of the fixing frames can gather towards the center of the frame and abut against the cable, the frame is fixed to the cable through the four gathered anti-skid pads, the frame is prevented from falling off from the cable, and due to the fact that the anti-skid hooks are further arranged on the inner surfaces of the four fixing frames, the anti-skid effect is good. When the four fixing frames are gathered towards the central cable, the anti-skid hooks on the inner surfaces of the four fixing frames are also hung on the cable, and the frame is fixed on the cable through double fixation of the anti-skid pads and the anti-skid hooks, so that only the fastening nuts need to be rotated when the frame is mounted or dismounted, and the defect that the magnetic flux sensor cannot be quickly fixed is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge detection, in particular to a bridge detection device based on magnetic flux. Background Art

[0002] According to the Chinese publication (announcement) number CN107907249A, a magnetic flux sensor aviation plug interface protection device is disclosed, which relates to the field of magnetic flux monitoring industry and can be used as an auxiliary device to improve the protection of the magnetic flux sensor. This device includes two symmetrical semicircular inner hollow structures, which are fixed by fixing screws; the semicircular inner hollow structure of this device adopts an inner hollow design, and the sensor aviation plug on the magnetic flux sensor is placed in the inner cavity; the magnetic flux sensor and the two symmetrical semicircular inner hollow structures are annular concentric structures, and the cable body is located between the magnetic flux sensor and the two symmetrical semicircular inner hollow structures. The invented protection device, based on the structure of the traditional clamp, adds corresponding protection and fixing design, realizing the functions of clamp limitation and sensor aviation plug interface protection.

[0003] The cables of the above technology and the prior art require additional circular clamps for fixing during installation, and the circular clamps also require additional fixing bolts to fix them together, making the fixation more complicated and unable to be fixed quickly. This makes it more troublesome when the mobile detector detects other areas of the cable. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcoming in the prior art that the magnetic flux sensor cannot be quickly fixed, and to propose a bridge detection device based on magnetic flux.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a bridge detection device based on magnetic flux, comprising a frame, a coil wrapped around the outside of the frame, a protective shell provided on the outside of the coil, a fastening nut provided on the top of the frame, handles provided on both sides of the fastening nut, four fixing frames provided in the middle of the fastening nut, damping blocks provided on the tops of the four fixing frames, eight anti-slip hooks provided on the surfaces of the four fixing frames, and anti-slip pads provided on one side of the four fixing frames.

[0006] Preferably, the protective shell is fixed to the surface of the frame by four fixing bolts, and the coil is set up between the protective shell and the frame.

[0007] Preferably, the four fixing frames are arranged around the top surface of the frame, and the fixing frames and the frame are integrally formed.

[0008] Preferably, the four damping blocks are evenly fixed on the top surfaces of four fixing frames by two fixing bolts, and the outer surfaces of the four fixing frames are all provided with threads.

[0009] Preferably, the four fixing frames are integrally formed with the eight anti-slip hooks on the surface, and the eight anti-slip hooks are spaced at equal intervals.

[0010] Preferably, the fastening nut is mounted on the outer surface of the fixing frame, the two handles are integrally formed with the fastening nut, and the threads on the inner surface of the fastening nut are matched with the threads on the outer surfaces of the four fixing frames.

[0011] Preferably, the four anti-slip pads are all fixed to the inner surface of the fixing frame by two fixing bolts, and the four anti-slip pads are all set on the top of the anti-slip hook.

[0012] Beneficial effects

[0013] In the utility model, four fixing brackets are set up on the top surface of the frame, and a fastening nut is provided on the outside of the fixing bracket, two handles and the fastening nut are integrally formed, and anti-slip hooks are provided on the inner surfaces of the four fixing brackets, and the anti-slip pad on the top of the anti-slip hook is also fixed to the inner surface of the fixing bracket by two fixing bolts, and four damping blocks are fixed to the top surfaces of the four fixing brackets by two fixing bolts. When the frame passes through the cable, the fastening nut on the top of the frame can be rotated by the handle, and the fastening nut rotates and moves upward. Since the fixing bracket is in a conical shape with a small bottom and a large top, when the fastening nut rotates and moves upward, the four fixing brackets are Due to the structure, the four fixing frames gather toward the center of the frame, so that the anti-skid pads installed on the inner surfaces of the four fixing frames will also gather toward the center of the frame and press against the cable. The frame is fixed to the cable by the four gathered anti-skid pads to prevent the frame from falling from the cable. In addition, since anti-skid hooks are provided on the inner surfaces of the four fixing frames, when the four fixing frames gather toward the center cable, the anti-skid hooks on the inner surfaces of the four fixing frames will also be hung on the cable. The frame is fixed to the cable by the dual fixation of the anti-skid pads and the anti-skid hooks, so that when the frame is installed or removed, it only needs to turn the fastening nut, which solves the disadvantage that the magnetic flux sensor cannot be quickly fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an isometric drawing of the present utility model;

[0015] Figure 2 It is a top view of the utility model;

[0016] Figure 3 For the utility model Figure 2 Cross-sectional view at AA;

[0017] Figure 4 It is a partial three-dimensional diagram of the present utility model.

[0018] Legend:

[0019] 1. Frame; 2. Coil; 3. Casing; 4. Fastening nut; 5. Handle; 6. Fixing bracket; 7. Damping block; 8. Anti-slip pad; 9. Anti-slip hook. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific embodiments and drawings. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0021] The specific embodiments of the present utility model are described below with reference to the accompanying drawings. Specific embodiment one:

[0023] Reference Figure 1-4 A bridge detection device based on magnetic flux includes a frame 1, characterized in that: a coil 2 is wound around the outside of the frame 1, a protective shell 3 is provided on the outside of the coil 2, a fastening nut 4 is provided on the top of the frame 1, handles 5 are provided on both sides of the fastening nut 4, four fixing brackets 6 are provided in the middle of the fastening nut 4, damping blocks 7 are provided on the tops of the four fixing brackets 6, eight anti-slip hooks 9 are provided on the surfaces of the four fixing brackets 6, and anti-slip pads 8 are provided on one side of the four fixing brackets 6. The protective shell 3 is fixed to the surface of the frame 1 by four fixing bolts, and the coil 2 is set between the protective shell 3 and the frame 1, and the four fixing brackets 6 are set around the top of the frame 1. The surface of the fixing frame 6 is formed integrally with the frame 1, and the four damping blocks 7 are evenly fixed to the top surface of the four fixing frames 6 by two fixing bolts. The outer surfaces of the four fixing frames 6 are provided with threads. The four fixing frames 6 are integrally formed with the eight anti-slip hooks 9 on the surface, and the eight anti-slip hooks 9 are equally spaced. The fastening nut 4 is installed on the outer surface of the fixing frame 6, and the two handles 5 are integrally formed with the fastening nut 4. The thread on the inner surface of the fastening nut 4 fits with the thread on the outer surface of the four fixing frames 6. The four anti-slip pads 8 are fixed to the inner surface of the fixing frame 6 by two fixing bolts, and the four anti-slip pads 8 are set on the top of the anti-slip hooks 9.

[0024] The present application is a closed-loop magnetic flux sensor connected to an external power supply. It is composed of a frame 1, a coil 2 and a protective shell 3. The coil 2 is wound on the frame 1, and the protective shell 3 is put on the frame 1. The protective shell 3 is then tightly fixed to the frame 1 with four fixing bolts. The internal magnetic core and magnetic coil 2 are protected by the protective shell 3. The closed-loop magnetic flux sensor is inserted into the cable when the cable is installed. The four fixing frames 6 of the frame are evenly set up on the top surface of the frame 1 around the through hole in the center of the frame 1. The frame 1 and the four fixing frames 6 are integrally formed. The fixing frames 6 are all conical structures with a larger upper part and a smaller lower part. The fastening nuts 4 are sleeved on the outside of the four fixing frames 6. The screw thread on the inner surface of the fastening nut 4 is matched with the screw thread on the outer surface of the four fixing brackets 6, so that the fastening nut 4 can be moved upward or downward in a straight line when the fastening nut 4 is rotated. When the fastening nut 4 moves upward, since the fixing bracket 6 is a tapered structure with a larger upper portion and a smaller lower portion, the fastening nut 4 moving upward will squeeze the four fixing brackets 6, so that the four fixing brackets 6 are squeezed toward the center cable and tightly pressed against the cable, thereby fixing the frame 1 on the cable. The two handles 5 are integrally formed with the fastening nut 4, and the fastening nut 4 can be rotated by the handle 5, making the rotation of the fastening nut 4 more labor-saving and convenient. Anti-skid hooks 9 are provided, and the anti-skid pads 8 on the top of the four groups of anti-skid hooks 9 are fixed to the inner surface of the fixing frame 6 by two fixing bolts. When the fixing frame 6 is squeezed toward the center and pressed against the cable, the frame 1 is tightly fixed to the cable by the dual anti-skid structure of the anti-skid hooks 9 and the anti-skid pads 8. The anti-skid hooks 9 will hook the protrusions of the cable when in use. The four damping blocks 7 are fixed to the top surfaces of the four fixing frames 6 by two fixing bolts to prevent the fastening nuts 4 from being detached and falling due to excessive rotation. When it is necessary to detect other areas of the cable, the fastening nuts 4 on the top of the frame 1 can be rotated by the handle 5. The fastening nut 4 is rotated and moved downward, so that the four fixing brackets 6 loosen the cable. At this time, the frame 1 can be moved. When it is moved to the area that needs to be inspected, the fastening nut 4 on the top of the frame 1 is rotated again by the handle 5 to rotate the fastening nut 4 upward. Since the fixing bracket 6 is a conical shape with a small bottom and a large top, when the fastening nut 4 is rotated upward, the four fixing brackets 6 are squeezed toward the center of the frame 1 due to structural reasons, so that the four fixing brackets 6 are tightly against the cable, and the double anti-slip structure of the anti-slip hook 9 and the anti-slip pad 8 is used to fix the frame 1 tightly on the cable to prevent the frame 1 from falling from the cable.

[0025] The magnetic flux sensor is made based on the principle of magnetoelastic effect of ferromagnetic materials. That is, when ferromagnetic materials are subjected to mechanical forces, strain is generated inside them, thereby generating stress, and the internal magnetization intensity (magnetic permeability) changes. The magnetic core and coil are energized to generate a magnetic field. When ferromagnetic materials are placed in a magnetic field environment, they will be magnetized. From the typical hysteresis curve of iron materials, it can be seen that magnetic permeability is the ratio of magnetic flux density to magnetic field intensity after magnetization of ferromagnetic materials. By measuring the change in magnetic permeability of components made of ferromagnetic materials, the internal force of the components can be determined. It can effectively measure the stress of cables and prestressed tendons. Specific embodiment two:

[0027] Reference Figure 1-4 , a bridge detection device based on magnetic flux, further based on the basic structure in the specific embodiment one, can increase or decrease the thickness of the top of the conical fixing frame 6. Since the conical fixing frame 6 is a structure with a larger top and a smaller bottom, the fastening nut 4 is rotated and the fastening nut 4 moves upward through the thread. Since the fixing frame 6 is a conical structure, when the fastening nut 4 moves upward, the four fixing frames 6 are squeezed toward the center by the fastening nut 4. When the thickness of the top of the conical fixing frame 6 is increased, the four fixing frames 6 will gather toward the center of the frame 1, so as to adapt to smaller cables passing through fixing frames 6 of different thicknesses.

[0028] In summary:

[0029] 1. Four fixing brackets 6 are set up on the top surface of the frame 1, and a fastening nut 4 is provided on the outside of the fixing bracket 6. Two handles 5 are integrally formed with the fastening nut 4. Anti-slip hooks 9 are provided on the inner surfaces of the four fixing brackets 6, and the anti-slip pad 8 on the top of the anti-slip hook 9 is also fixed to the inner surface of the fixing bracket 6 by two fixing bolts, and four damping blocks 7 are fixed to the top surface of the four fixing brackets 6 by two fixing bolts. When the frame 1 passes through the cable, the fastening nut 4 on the top of the frame 1 can be rotated by the handle 5, and the fastening nut 4 rotates and moves upward. Since the fixing bracket 6 is in a conical shape with a small bottom and a large top, when the fastening nut 4 rotates and moves upward, the four fixing brackets 6 are Due to structural reasons, they gather toward the center of the frame 1, so that the anti-slip pads 8 installed on the inner surfaces of the four fixing frames 6 will also gather toward the center of the frame 1 and press against the cable. The frame 1 is fixed to the cable by the four gathered anti-slip pads 8 to prevent the frame 1 from falling from the cable. In addition, since anti-slip hooks 9 are also provided on the inner surfaces of the four fixing frames 6, when the four fixing frames 6 gather toward the center cable, the anti-slip hooks 9 on the inner surfaces of the four fixing frames 6 will also be hung on the cable. The frame 1 is fixed to the cable through the dual fixation of the anti-slip pads 8 and the anti-slip hooks 9, so that when the frame 1 is installed or removed, it is only necessary to rotate the fastening nut 4, which solves the disadvantage that the magnetic flux sensor cannot be quickly fixed.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A bridge detection device based on magnetic flux, comprising a frame (1), characterized in that: A coil (2) is wound around the outside of the frame (1), a protective shell (3) is provided on the outside of the coil (2), a fastening nut (4) is provided on the top of the frame (1), handles (5) are provided on both sides of the fastening nut (4), four fixing frames (6) are provided in the middle of the fastening nut (4), damping blocks (7) are provided on the tops of the four fixing frames (6), eight anti-slip hooks (9) are provided on the surfaces of the four fixing frames (6), and anti-slip pads (8) are provided on one side of the four fixing frames (6).

2. The bridge detection device based on magnetic flux according to claim 1, characterized in that: The protective shell (3) is fixed to the surface of the frame (1) by four fixing bolts, and the coil (2) is set up between the protective shell (3) and the frame (1).

3. The bridge detection device based on magnetic flux according to claim 1, characterized in that: The four fixing frames (6) are arranged around the top surface of the frame (1), and the fixing frames (6) and the frame (1) are integrally formed.

4. The bridge detection device based on magnetic flux according to claim 1, characterized in that: The four damping blocks (7) are evenly fixed on the top surfaces of four fixing frames (6) by two fixing bolts, and the outer surfaces of the four fixing frames (6) are all provided with threads.

5. The bridge detection device based on magnetic flux according to claim 1, characterized in that: The four fixing frames (6) are all formed integrally with the eight anti-slip hooks (9) on the surface, and the eight anti-slip hooks (9) are spaced at equal intervals.

6. The bridge detection device based on magnetic flux according to claim 1, characterized in that: The fastening nut (4) is mounted on the outer surface of the fixing frame (6), the two handles (5) and the fastening nut (4) are integrally formed, and the threads on the inner surface of the fastening nut (4) are matched with the threads on the outer surfaces of the four fixing frames (6).

7. The bridge detection device based on magnetic flux according to claim 1, characterized in that: The four anti-skid pads (8) are all fixed to the inner surface of the fixing frame (6) by two fixing bolts, and the four anti-skid pads (8) are all set on the top of the anti-skid hook (9).

Images