Mesh-shaped multi-point probe adaptive to crack width gauge

Abstract

A net-shaped multipoint probe adaptive to a crack width gauge belongs to the technical field of urban physical examination tools, a plurality of hanging probes are detachably connected to a stretching net sheet, each hanging probe comprises a hanging part and a single probe, the hanging part comprises a main positioning plate, a penetrating plate and a movable clamping plate, and the main positioning plate and the single probe are arranged on the stretching net sheet. A penetrating plate is horizontally arranged on the side, facing the stretching mesh, of the main positioning plate, one end of the penetrating plate is fixedly connected with the main positioning plate, a movable clamping plate is arranged at the other end of the penetrating plate, and the penetrating plate penetrates through meshes of the stretching mesh. A clamping gap matched with the stretching mesh is defined by the side, facing the stretching mesh, of the main positioning plate, the bottom face of the penetrating plate and the inner wall of the movable clamping plate, and a single probe is arranged on the other side of the main positioning plate. Deviation of measurement data is caused by inaccurate test point positions, and the device is specially used for measuring a plurality of radial or adjacent cracks.

Description

Technical Field

[0001] The utility model relates to the technical field of crack testing, in particular to a mesh multi-point probe adapted for a crack width measuring instrument. Background Art

[0002] The crack width gauge is used to measure the crack width of bridges, tunnels, walls, concrete pavements, metal surfaces, etc. The way staff measure cracks on the wall is mostly to use a handheld probe to test the width of different positions along the length of the crack. When the cracks on the wall are multiple radial crack groups, that is, crack groups that diverge from one point to multiple places, the staff needs to use a handheld probe to detect multiple cracks one by one, so as to facilitate the subsequent classification, repair and reinforcement of the wall. Due to the diversity of the shape and direction of the crack group, the number of test points is increased. During the detection process, the staff is prone to misremembering and misremembering multiple test points due to the lack of position marks. The staff's hand position is difficult to find in time, which will eventually lead to inaccurate statistical results of the measurement data due to the mismatch of the test point data. The large number of measuring point locations and the lack of regularity will also cause missed measurements and wrong measurements. In short, there is a lack of relevant auxiliary tools specifically for measuring multiple radial or adjacent cracks. Summary of the invention

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a mesh multi-point probe adapted to a crack width measuring instrument.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A mesh multi-point probe adapted for a crack width gauge comprises a stretch mesh, to which a plurality of hanging probes are detachably connected, each hanging probe comprising a hanging portion and a single probe, the hanging portion comprising a main positioning plate, a penetration plate and a movable splint, the main positioning plate being vertically arranged, a penetration plate being horizontally arranged on the side of the main positioning plate facing the stretch mesh, one end of the penetration plate being fixedly connected to the main positioning plate, a movable splint being arranged on the other end of the penetration plate, the penetration plate being arranged at the mesh holes of the stretch mesh, a clamping gap matching the stretch mesh is formed between the side of the main positioning plate facing the stretch mesh, the bottom surface of the penetration plate and the inner wall of the movable splint, and a single probe is arranged on the other side of the main positioning plate.

[0006] As a preferred solution: the single probe is connected to the main positioning plate via a mounting rod, one end of the mounting rod is arranged on the main positioning plate, and the other end of the mounting rod is connected to the single probe.

[0007] As a preferred solution: a slide groove is horizontally opened at the bottom of the penetration plate along the length direction, a slider is installed on the top of the movable splint, the bottom of the slider is fixedly connected to the top of the movable splint, the slider is arranged in the slide groove, and the slider drives the movable splint to slide back and forth along the length direction of the slide groove. When the slider drives the movable splint to move toward the main positioning plate, the width of the clamping gap is in a gradually narrowing state. When the slider drives the movable splint to move away from the main positioning plate, the width of the clamping gap is in a gradually widening state.

[0008] As a preferred solution: a threaded rod is rotatably installed on the inner end wall of the slide groove close to the main positioning plate, and one end of the threaded rod away from the main positioning plate can movably penetrate the end wall of the penetration plate and extend to the outside of the slide groove; a threaded groove is penetrated on the slider, the threaded rod passes through the threaded groove, and the threaded rod is threadedly connected to the threaded groove.

[0009] As a preferred solution: a connecting rod is installed at one end of the mounting rod away from the main positioning plate, a fixing block is installed at one end of the single probe close to the connecting rod, a first slot is opened at one end of the fixing block close to the connecting rod, and the connecting rod can be inserted and installed inside the first slot.

[0010] As a preferred solution: a spherical clamping block is movably installed on the top of the connecting rod, a spherical groove is opened on the top of the inner wall of the first slot, and the spherical clamping block can be clamped and installed inside the spherical groove.

[0011] As a preferred solution: a second slot is provided on the top of the connecting rod, a movable block is slidably installed inside the second slot, the bottom of the spherical clamping block is connected to the top of the movable block, and an elastic member is connected between the bottom of the movable block and the bottom end of the inner wall of the second slot.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model realizes the relevant measurement of complex cracks or radial cracks through the cooperation between the stretching mesh, the main positioning plate and the single probe. When detecting cracks on the wall, when the cracks on the wall spread from one point to multiple places, the stretching mesh is stretched to cover the cracks on the wall, and then the main positioning plate is installed at the corresponding position on the stretching mesh according to the specific direction of the crack. At this time, the single probe connected to the main positioning plate can detect the crack. Detection in this way can avoid the deviation of measurement data caused by inaccurate test points when the staff holds the probe for detection. The utility model can be used specifically for measuring multiple radial or adjacent cracks at the same time to avoid the occurrence of missed measurements and wrong measurements by the staff.

[0014] 2. The utility model is provided with a spherical clamping block, a threaded rod and a movable clamping plate. The movable clamping plate can be moved by twisting the threaded rod, thereby realizing rapid disassembly and assembly between the main positioning plate and the stretch mesh, which is convenient for the utility model to transfer the position of the single probe according to multiple test points. The spherical clamping block is clamped into the spherical groove to realize rapid disassembly and assembly of the single probe. When the utility model is not in use, the single probe can be conveniently removed for storage and protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the main structure of the connection relationship between the stretch mesh and multiple hanging probes, and only part of the stretch mesh is shown in the figure;

[0016] Figure 2 It is a schematic diagram of the main structure of the stretched mesh in a stretched state;

[0017] Figure 3 A first three-dimensional structural schematic diagram of the connection relationship between the main positioning plate, the penetration plate, the movable splint and the single probe;

[0018] Figure 4 A second three-dimensional structural schematic diagram of the connection relationship between the main positioning plate, the penetration plate, the movable splint and the single probe;

[0019] Figure 5 A third three-dimensional structural schematic diagram of the connection relationship between the main positioning plate, the penetration plate, the movable clamping plate and the single probe, the movable clamping plate moves toward the main positioning plate, and the clamping gap becomes smaller;

[0020] Figure 6 A three-dimensional structural schematic diagram of the connection relationship between the fixed block and the single probe;

[0021] Figure 7 is a schematic diagram of the three-dimensional structure of the connecting rod, in which the connecting rod is in a longitudinally cut state;

[0022] Figure 8 A three-dimensional structural diagram showing the connection relationship between the main positioning plate, the penetration plate and the movable splint;

[0023] Fig. 9 It is a schematic diagram of the structure of the penetration plate when viewed from above;

[0024] Fig.10 It is a schematic diagram of the three-dimensional structure of the movable splint;

[0025] Fig.11 It is a schematic diagram of the main structure of the stretched mesh in another stretched state.

[0026] In the figure: 1. stretch mesh; 2. main positioning plate; 3. single probe; 4. penetration plate; 5. movable splint; 6. mounting rod; 7. fixing block; 8. connecting rod; 9. spherical clamping block; 10. threaded rod; 11. first slot; 12. spherical slot; 13. second slot; 14. elastic member; 15. movable block; 16. slide slot; 17. slider; 18. threaded slot. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Combination Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, in the present embodiment, a mesh multi-point probe adapted for a crack width gauge comprises a stretch mesh 1, on which a plurality of hanging probes are detachably connected, each hanging probe comprising a hanging portion and a single probe 3, the hanging portion comprising a main positioning plate 2, a penetration plate 4 and a movable splint 5, the main positioning plate 2 is vertically arranged, a penetration plate 4 is horizontally arranged on the side of the main positioning plate 2 facing the stretch mesh 1, one end of the penetration plate 4 is fixedly connected to the main positioning plate 2, and a movable splint 5 is arranged on the other end of the penetration plate 4, the penetration plate 4 is penetrated at the mesh holes of the stretch mesh 1, a clamping gap matching the stretch mesh 1 is formed between the side of the main positioning plate 2 facing the stretch mesh 1, the bottom surface of the penetration plate 4 and the inner wall of the movable splint 5, and a single probe 3 is arranged on the other side of the main positioning plate 2.

[0029] In this embodiment, the single probe 3 is connected to the main positioning plate 2 via a mounting rod 6 , one end of the mounting rod 6 is disposed on the main positioning plate 2 , and the other end of the mounting rod 6 is connected to the single probe 3 .

[0030] In this embodiment, a slide groove 16 is horizontally opened at the bottom of the penetration plate 4 along the length direction, and a slider 17 is installed on the top of the movable splint 5. The bottom of the slider 17 is fixedly connected to the top of the movable splint 5. The slider 17 is arranged in the slide groove 16. The slider 17 drives the movable splint 5 to slide back and forth along the length direction of the slide groove 16. When the slider 17 drives the movable splint 5 to move toward the main positioning plate 2, the width of the clamping gap is in a gradually narrowing state. When the slider 17 drives the movable splint 5 to move away from the main positioning plate 2, the width of the clamping gap is in a gradually widening state.

[0031] The stretch mesh 1 in this embodiment is formed by multiple steel wires respectively enclosing multiple square elastic steel rings and connecting them in sequence. Each steel wire passes through the square elastic steel rings enclosed by other steel wires and then encloses itself to form a square elastic steel ring. Each square elastic steel ring is fitted with the ends of other adjacent square elastic steel rings. The stretch mesh 1 is deformed by the change in the connection angle position of the contacting ends of the multiple square elastic steel rings after being pulled by an external force. The ends of the adjacent square elastic steel rings are welded or connected in a circle-by-circle manner. The deformation principle is the existing principle.

[0032] In this embodiment, the stretch mesh 1 can also be an existing elastic mesh, and a plurality of main positioning plates 2 are evenly and detachably mounted on one side of the stretch mesh 1, and a mounting rod 6 is mounted on the side of the main positioning plate 2 away from the stretch mesh 1, and a single probe 3 is detachably mounted on the side of the mounting rod 6 away from the main positioning plate 2. The stretch mesh 1 can be fixed on the wall, and the single probe 3 can be mounted on the stretch mesh 1, so as to realize multi-point detection of cracks on the wall.

[0033] In this embodiment, a penetration plate 4 is installed on the top of the main positioning plate 2 close to the stretching mesh 1, and a movable clamping plate 5 is movably installed on the bottom of the penetration plate 4 away from the main positioning plate 2. The main positioning plate 2 can be installed on the stretching mesh 1 through the movable clamping plate 5.

[0034] In this embodiment, a slide groove 16 is horizontally opened at the bottom of the penetration plate 4 along the length direction, and a slider 17 is installed on the top of the movable clamping plate 5. The slider 17 is slidably installed inside the slide groove 16. By sliding the slider 17 in the slide groove 16, the movable clamping plate 5 can be moved.

[0035] In this embodiment, a threaded rod 10 is rotatably mounted on the inner end wall of the slide 16 near the main positioning plate 2. The end of the threaded rod 10 away from the main positioning plate 2 is movable through the end wall of the penetration plate 4 and extends to the outside of the slide 16. A threaded groove 18 is penetrated on the slider 17. The threaded rod 10 passes through the threaded groove 18, and the threaded rod 10 is threadedly connected with the threaded groove 18. The staff rotates the threaded rod 10 by hand. Since the slider 17 is threadedly connected with the threaded rod 10, the slider 17 can slide in the slide 16 during the rotation of the threaded rod 10. At this time, the movable splint 5 moves close to the main positioning plate 2. When the movable splint 5 and the main positioning plate 2 are both against the steel wire on the stretching mesh 1, the installation of the monomer probe 3 is completed by clamping and fixing the movable splint 5 and the main positioning plate 2. The installation method of clamping and fixing can also make the installation of the monomer probe 3 more stable, avoiding the failure of the detection caused by unstable installation during the detection process, and increasing the operation stability of the utility model.

[0036] In this embodiment, the working principle of the threaded rod 10, the slide groove 16, the slider 17 and the threaded groove 18 in cooperation with each other is the same as the working principle of driving the slider to and fro in the existing linear slide.

[0037] In this embodiment, a connecting rod 8 is installed at one end of the mounting rod 6 away from the main positioning plate 2, and a fixing block 7 is installed at one end of the single probe 3 close to the connecting rod 8. A first slot 11 is provided at one end of the fixing block 7 close to the connecting rod 8, and the connecting rod 8 can be inserted and installed inside the first slot 11. By inserting the connecting rod 8 into the first slot 11, the single probe 3 can be quickly disassembled and assembled, which is convenient for removing the single probe 3 for storage after the use of the utility model.

[0038] In this embodiment, a spherical clamping block 9 is movably mounted on the top of the connecting rod 8, a spherical groove 12 is formed on the top of the inner wall of the first slot 11, and the spherical clamping block 9 can be clamped and mounted inside the spherical groove 12. The way in which the spherical clamping block 9 is clamped inside the spherical groove 12 can make the connection between the connecting rod 8 and the single probe 3 more stable.

[0039] In this embodiment, a second slot 13 is provided at the top of the connecting rod 8, a movable block 15 is slidably installed inside the second slot 13, the bottom of the spherical clamping block 9 is connected to the top of the movable block 15, and an elastic member 14 is connected between the bottom of the movable block 15 and the bottom end of the inner wall of the second slot 13, and the elastic member 14 is a spring. When the spherical clamping block 9 moves to the spherical groove 12, under the elastic force of the elastic member 14, the spherical clamping block 9 is clamped into the inside of the spherical groove 12, and the connection process between the main positioning plate 2 and the single probe 3 is completed.

[0040] Combination Figure 1 , Figure 2 and Fig.11 As shown, the stretch mesh 1 in the present invention can be stretched and deformed as needed. When the present invention is in use, the area covered by the stretch mesh 1 after stretching and deformation is ensured to be concentrated in the concentrated area where multiple cracks are located.

[0041] The single probe 3 in the utility model is an existing probe structure, which is a probe with a cylindrical or square shell, and is used in conjunction with the host of the existing crack width gauge. The single probe 3 and the host of the crack width gauge are connected by wire or wirelessly, and the working process of the cooperation between the host of the crack width gauge and the single probe 3 is the same as the working process of the cooperation between the host and the probe of the existing crack width gauge.

[0042] In the utility model, the single probe 3 is used as a data acquisition end of a mesh multi-point probe adapted to a crack width gauge. When the single probe 3 is connected to a mesh multi-point probe host adapted to a crack width gauge through wireless technology, the staff can read the specific data of the crack measured by the single probe 3 by checking the display screen of the host in the crack width gauge. An independent power supply is provided on the single probe 3 to provide power support for the single probe 3. The stretching mesh 1 is woven from multiple steel wires or other silk strips of elastic and flexible materials. The stretching mesh 1 can be stretched in the horizontal and vertical directions or at any inclination angle. The main positioning plate 2 is fixed by means of a movable splint 5 clamped on the steel wire strips on the grid of the stretching mesh 1. There are multiple main positioning plates 2 and single probes 3. When using the utility model, the staff can decide the number of main positioning plates 2 and single probes 3 to be used according to actual on-site usage needs.

[0043] When it is necessary to measure the cracks on the wall, the staff judges the number, concentrated position and direction of the main cracks on the wall, and manually pulls the stretch mesh 1 so that the stretch mesh 1 can fully cover or cover the concentrated area of ​​multiple cracks. A preset distance is left between the stretch mesh 1 and the wall. Then the staff uses expansion bolts or nails that can be wedged into the inside of the wall to fix the four corners of the stretch mesh 1 on the wall of the measured cracks. According to the direction of the wall cracks, the staff takes out the corresponding number of main positioning plates 2 and single probes 3. Then the staff aligns the connecting rod 8 with the first slot 11 and inserts the connecting rod 8 into the inside of the first slot 11. During the insertion of the connecting rod 8, the spherical clamping block 9 is squeezed into the inside of the second slot 13 and squeezes the elastic member 14. When the spherical clamping block 9 moves to the spherical slot 12, under the elastic force of the elastic member 14, the spherical clamping block 9 is clamped into the inside of the spherical slot 12. At this time, the connection between the main positioning plate 2 and the single probe 3 is completed.

[0044] After that, the staff will take the assembled main positioning plate 2 and the single probe 3 to the stretch mesh 1 fixed on the wall, and then install the main positioning plate 2 in the way that the single probe 3 faces the wall. The main positioning plate 2 is installed in the way that the single probe 3 faces the wall. The main positioning plate 2 is installed in the way that the movable clamping plate 5 passes through the grid of the stretch mesh 1. Then the staff makes the threaded rod 10 rotate by hand-tightening the threaded rod 10. Since the slider 17 is threadedly connected to the threaded rod 10, during the rotation of the threaded rod 10, the slider 17 slides in the slide groove 16 along the length direction of the slide groove 16. At this time, the movable clamping plate 5 moves close to the main positioning plate 2. When the movable clamping plate 5 and the main positioning plate 2 both abut against the steel wire on the stretch mesh 1, the installation of the single probe 3 is completed by clamping and fixing the movable clamping plate 5 and the main positioning plate 2. The installation of the single probe 3 can also be made more stable through the clamping and fixing installation method, thereby avoiding the failure of the detection caused by unstable installation during the detection process, thereby increasing the operation stability of the utility model.

[0045] After the staff has installed multiple single probes 3, the staff will start the crack detector host to control the single probe 3 to collect width data. The crack detector host will then analyze the crack width data, and can simultaneously complete the centralized and accurate acquisition of relevant width data for multiple cracks appearing at multiple locations on the wall.

[0046] After the use of the utility model is completed, the staff can remove the main positioning plate 2 from the stretch mesh 1 by twisting the threaded rod 10, then pull out the single probe 3 from the mounting rod 6, pack the single probe 3 for protection, and then remove the stretch mesh 1 and store it with the main positioning plate 2.

Claims

1. A mesh multi-point probe adapted for a crack width gauge, characterized in that: The invention comprises a stretch mesh (1), wherein a plurality of hanging probes are detachably connected to the stretch mesh (1), each hanging probe comprising a hanging portion and a single probe (3), the hanging portion comprising a main positioning plate (2), a penetration plate (4) and a movable clamping plate (5), the main positioning plate (2) being arranged vertically, a penetration plate (4) being arranged horizontally on a side of the main positioning plate (2) facing the stretch mesh (1), one end of the penetration plate (4) being fixedly connected to the main positioning plate (2), a movable clamping plate (5) being arranged on the other end of the penetration plate (4), the penetration plate (4) being penetrated at a mesh of the stretch mesh (1), a clamping gap matching the stretch mesh (1) being formed between a side of the main positioning plate (2) facing the stretch mesh (1), a bottom surface of the penetration plate (4) and an inner wall of the movable clamping plate (5), and a single probe (3) being arranged on the other side of the main positioning plate (2).

2. A mesh multi-point probe adapted for a crack width measuring instrument according to claim 1, characterized in that: The single probe (3) is connected to the main positioning plate (2) via a mounting rod (6); one end of the mounting rod (6) is arranged on the main positioning plate (2), and the other end of the mounting rod (6) is connected to the single probe (3).

3. A mesh multi-point probe adapted for a crack width measuring instrument according to claim 1 or 2, characterized in that: A slide groove (16) is horizontally provided at the bottom of the penetration plate (4) along the length direction, and a slider (17) is installed at the top of the movable splint (5). The bottom of the slider (17) is fixedly connected to the top of the movable splint (5), and the slider (17) is arranged in the slide groove (16). The slider (17) drives the movable splint (5) to slide back and forth along the length direction of the slide groove (16). When the slider (17) drives the movable splint (5) to move toward the main positioning plate (2), the width of the clamping gap is in a state of gradually narrowing. When the slider (17) drives the movable splint (5) to move away from the main positioning plate (2), the width of the clamping gap is in a state of gradually widening.

4. A mesh multi-point probe adapted for a crack width measuring instrument according to claim 3, characterized in that: A threaded rod (10) is rotatably mounted on the inner end wall of the slide groove (16) close to the main positioning plate (2); one end of the threaded rod (10) away from the main positioning plate (2) movably penetrates the end wall of the penetration plate (4) and extends to the outside of the slide groove (16); a threaded groove (18) is penetrated by the slider (17); the threaded rod (10) passes through the threaded groove (18), and the threaded rod (10) is threadedly connected to the threaded groove (18).

5. A mesh multi-point probe adapted for a crack width measuring instrument according to claim 2, characterized in that: A connecting rod (8) is installed at one end of the mounting rod (6) away from the main positioning plate (2), a fixing block (7) is installed at one end of the single probe (3) close to the connecting rod (8), a first slot (11) is provided at one end of the fixing block (7) close to the connecting rod (8), and the connecting rod (8) can be plugged into the inside of the first slot (11).

6. A mesh multi-point probe adapted for a crack width measuring instrument according to claim 5, characterized in that: A spherical clamping block (9) is movably mounted on the top of the connecting rod (8), a spherical groove (12) is formed on the top of the inner wall of the first slot (11), and the spherical clamping block (9) can be clamped and mounted inside the spherical groove (12).

7. A mesh multi-point probe adapted for a crack width measuring instrument according to claim 6, characterized in that: A second slot (13) is formed at the top of the connecting rod (8), a movable block (15) is slidably mounted inside the second slot (13), the bottom of the spherical clamping block (9) is connected to the top of the movable block (15), and an elastic member (14) is connected between the bottom of the movable block (15) and the bottom end of the inner wall of the second slot (13).

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