A device for measuring the width of a concrete crack in an inner wall of a culvert

Abstract

The application discloses a culvert inner wall concrete crack width measuring device and relates to the crack width measuring field.The device comprises a flat plate, vertical rods movably connected to the two sides of the flat plate, a side plate fixedly connected to one side of the vertical rod, and a tie fixedly connected to the side of the side plate away from the vertical rod.A quick-release locking structure composed of a connecting plug rod, a butt joint channel, a locking mechanism and a hexagonal column is integrated on the flat plate, and the elastic reset characteristics of the torsional spring shaft are utilized, so that the digital crack measuring instrument body can be quickly clamped and stably locked without tools, and the problem of low on-site use efficiency caused by the complicated installation and the non-detachable nature of the traditional device is effectively overcome.The user connects the digital crack measuring instrument body to the mounting plate through the damping hinge and wears the whole on the waist, and after turning over, the digital crack measuring instrument body can be stably hovered at any angle, so that the hands originally used for holding the host computer are released, and the user can focus on controlling the digital probe.

Description

Technical Field

[0001] This invention relates to crack width measurement technology, specifically to a device for measuring the width of cracks in the concrete inner wall of a culvert. Background Technology

[0002] As a key component of transportation and water conservancy infrastructure, culverts are susceptible to cracks in their inner concrete structures due to factors such as load, seepage, and environmental erosion during long-term service. If the crack width cannot be detected in a timely and accurate manner, it will be difficult to assess the structural safety status and take effective maintenance measures. Currently, on-site inspections generally use a split device consisting of a digital crack measuring instrument and an external digital probe. During operation, one hand must hold the main unit to observe the screen reading, while the other hand controls the probe to aim at the crack. However, in the narrow space, slippery inner walls, and poor lighting conditions inside culverts, holding the main unit with one hand for a long time can easily cause arm fatigue, leading to shaking of the main unit or deviation of the viewing angle. This not only increases the operational burden but also directly affects the crack location accuracy and the stability of the measurement data.

[0003] Existing devices for measuring the width of concrete cracks in culvert inner walls mostly use simple handheld supports or shoulder straps. While these can partially alleviate the load-bearing problem, they lack reliable main unit posture adjustment and hovering locking mechanisms, making it impossible to keep the measuring instrument stable in a position that is easy to observe after it is unfolded. More importantly, the main unit installation structure is often not quick to disassemble and assemble, requiring cumbersome fixing each time it is used. In actual inspections, operators urgently need a device that can securely attach the main unit to their body and achieve hovering at any angle through a damping hinge, thereby freeing up the hand that was originally used to hold the main unit, allowing them to focus on probe operation and improving work efficiency and measurement reliability in confined spaces.

[0004] To address this issue, the applicant proposes a device for measuring the width of concrete cracks in the inner wall of culverts. Summary of the Invention

[0005] The purpose of this invention is to provide a device for measuring the width of concrete cracks in the inner wall of culverts, in order to solve the problem that existing devices for measuring the width of concrete cracks in the inner wall of culverts mostly rely on handheld brackets or straps to fix the digital crack measuring instrument body, which makes it difficult to achieve stable hovering and quick assembly and disassembly, resulting in the need to hold the main unit with one hand during operation, affecting the probe control accuracy and work efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a device for measuring the width of concrete cracks in the inner wall of a culvert, comprising a plate, wherein vertical rods are movably connected to both sides of the plate, a side plate is fixedly connected to one side of the vertical rods, and a strap is fixedly connected to the side of the side plate away from the vertical rods;

[0007] A measuring mechanism is provided on one side of the plate. The measuring mechanism includes a digital crack measuring instrument body. A mounting plate is rotatably connected to one side of the digital crack measuring instrument body via a damping hinge. Two placement slots are symmetrically opened on one side of the mounting plate, and a connecting rod is rotatably connected to the inner cavity of the placement slot. Insertion holes are opened at the top and bottom of the connecting rod.

[0008] The flat plate has four through slots on one side, and the two ends of the connecting rod are respectively inserted into the corresponding through slots. The flat plate also has two structural slots on one side, and a locking mechanism is provided in the inner cavity of each structural slot. The locking mechanism includes a toothed column, and toothed plates are provided on both sides of the toothed column. A horizontal plate is fixedly connected to one end of the toothed plate, and a locking rod is fixedly connected to one side of the horizontal plate. The end of the locking rod away from the corresponding horizontal plate extends through the side wall of the corresponding structural slot to the inner cavity of the corresponding through slot and is inserted into the corresponding insertion hole. One end of the toothed column is rotatably connected to the inner wall of the corresponding structural slot through a torsion spring shaft, and both toothed plates mesh with the toothed column.

[0009] Furthermore, the inner cavity of the structural groove is provided with a baffle plate, and the outer surface of the baffle plate is fixedly connected to the inner wall of the corresponding structural groove.

[0010] Furthermore, the end of the toothed column away from the torsion spring shaft is fixedly connected to a hexagonal column through a bushing penetrating the side wall of the corresponding baffle plate.

[0011] Furthermore, a tool groove is provided on one inner wall of the structural groove, and a limiting mechanism is provided in the inner cavity of the tool groove. The limiting mechanism includes a sleeve, and a sliding rod is slidably connected to the inner cavity of the sleeve. An internal hexagonal collar is fixedly connected to the end of the sliding rod away from the sleeve, and the internal hexagonal collar is sleeved on the outer surface of the corresponding hexagonal prism.

[0012] Furthermore, the top and bottom of the sleeve are rotatably connected to the inner wall of the corresponding tool slot via a torsion spring shaft.

[0013] Furthermore, two short blocks are fixedly connected to the outer walls of both sides of the plate, and the top and bottom of the vertical rod are rotatably connected to one side of the corresponding short block via a pivot.

[0014] Furthermore, one side of one of the straps is fixedly connected to a hook side of Velcro, and the other side of the strap is fixedly connected to a hook side of Velcro.

[0015] Furthermore, the side of the mounting plate furthest from the digital crack measuring instrument body abuts against the side of the flat plate.

[0016] Furthermore, the inner cavity of the structural groove is provided with two track rods, the two ends of which are fixedly connected to the inner wall of the corresponding structural groove, and the outer surface of the track rod is fitted with a sliding sleeve, one side of which is fixedly connected to one side of the corresponding toothed plate.

[0017] Furthermore, a storage mechanism is provided on one side of the side panel. The storage mechanism includes an outer frame. One side of the outer frame is fixedly connected to one side of the corresponding side panel. Several elastic ropes are fixedly connected to the other side of the outer frame and along the vertical direction of the outer frame. Winding posts are fixedly connected to both sides of the upper surface of the outer frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] This solution integrates a quick-release locking structure on a flat plate, consisting of a connecting rod, a docking slot, a locking mechanism, and a hexagonal post. Utilizing the elastic reset characteristics of a torsion spring shaft, the digital crack measuring instrument can be quickly clamped and securely locked without tools, effectively overcoming the low on-site efficiency caused by the complex installation and non-removable nature of traditional devices. The user connects the digital crack measuring instrument to the mounting plate via a damping hinge and wears it around their waist. After flipping, it can be stably suspended at any angle, freeing up the hands previously used to hold the main unit, allowing the user to focus on operating the digital probe. This significantly improves measurement accuracy and operational smoothness in wet and slippery environments. Simultaneously, a limiting mechanism within the tool slot, using an internal hexagonal collar to engage the hexagonal post, achieves rotational locking, preventing accidental unlocking. The storage mechanism on the side plate uses an outer frame, elastic cord, and winding post to reliably store and prevent the digital probe and its cable from detaching, ensuring the integrity of the equipment during transport and use.

[0020] By incorporating a mounting plate, placement slot, and connecting rod, the digital crack measuring instrument can be retracted into the placement slot when not in use, achieving a compact folding of the overall structure. When installation is required, the connecting rod can be rotated out and inserted into the docking slot on the plate, which, in conjunction with the locking mechanism, enables quick positioning and locking. This simplifies the assembly and disassembly process, avoids the risk of lost or exposed parts, and enhances the portability and operational safety of the equipment in complex environments such as culverts. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the groove provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the main structure of the digital crack measuring instrument provided in an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the through-slot structure provided in an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the tool slot structure provided in an embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the sleeve structure provided in an embodiment of the present invention;

[0028] Figure 7 This is a schematic diagram of a hexagonal prism structure provided in an embodiment of the present invention.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Flat plate; 2. Short block; 3. Vertical rod; 4. Side plate; 5. Storage mechanism; 501. Outer frame; 502. Elastic rope; 503. Winding post; 6. Tie; 7. Measuring mechanism; 701. Digital crack measuring instrument body; 702. Damping hinge; 703. Mounting plate; 704. Placement slot; 705. Connecting rod; 706. Insertion hole; 8. Docking through slot; 9. Structural slot; 10. Limiting mechanism; 1001. Sleeve; 1002. Sliding rod; 1003. Hexagonal collar; 11. Locking mechanism; 1101. Cover plate; 1102. Hexagonal post; 1103. Toothed plate; 1104. Horizontal plate; 1105. Track rod; 1106. Sliding sleeve; 1107. Locking rod; 1108. Toothed post; 12. Tool slot. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] As attached Figure 1 To be continued Figure 7 As shown:

[0033] Example 1:

[0034] The present invention provides a device for measuring the width of concrete cracks in the inner wall of a culvert, including a plate 1, with vertical rods 3 movably connected to both sides of the plate 1, a side plate 4 fixedly connected to one side of the vertical rods 3, and a strap 6 fixedly connected to the side of the side plate 4 away from the vertical rods 3.

[0035] A measuring mechanism 7 is provided on one side of the plate 1. The measuring mechanism 7 includes a digital crack measuring instrument body 701. A mounting plate 703 is rotatably connected to one side of the digital crack measuring instrument body 701 via a damping hinge 702. Two placement slots 704 are symmetrically opened on one side of the mounting plate 703. A connecting rod 705 is rotatably connected to the inner cavity of the placement slot 704. Insertion holes 706 are respectively opened at the top and bottom of the connecting rod 705.

[0036] Four through slots 8 are provided on one side of the plate 1. The two ends of the connecting rod 705 are respectively inserted into the corresponding through slots 8. Two structural slots 9 are provided on one side of the plate 1. A locking mechanism 11 is provided in the inner cavity of the structural slot 9. The locking mechanism 11 includes a toothed column 1108. Toothed plates 1103 are provided on both sides of the toothed column 1108. A horizontal plate 1104 is fixedly connected to one end of the toothed plate 1103. A locking rod 1107 is fixedly connected to one side of the horizontal plate 1104. The end of the locking rod 1107 away from the corresponding horizontal plate 1104 passes through the side wall of the corresponding structural slot 9 and extends to the inner cavity of the corresponding through slot 8 and is inserted into the corresponding insertion hole 706. One end of the toothed column 1108 is rotatably connected to the inner wall of the corresponding structural slot 9 through a torsion spring shaft. Both toothed plates 1103 are engaged with the toothed column 1108.

[0037] The inner cavity of the structural groove 9 is provided with a baffle plate 1101, and the outer surface of the baffle plate 1101 is fixedly connected to the inner wall of the corresponding structural groove 9.

[0038] Working principle: First, the operator attaches the two straps 6 together using the hook and loop sides of the Velcro tape, securing the plate 1 firmly around the waist. Then, the digital probe is removed from the inner cavity of the outer frame 501, and the connecting wire is unwound from the winding post 503. When installing the digital crack measuring instrument body 701, the operator rotates and unfolds the two connecting rods 705 from the placement slots 704. Next, the hexagonal post 1102 is rotated, causing the toothed post 1108 to rotate against the spring force of the torsion spring shaft. This causes the two toothed plates 1103 meshing with it to slide towards or away from each other along the track rod 1105, thereby causing the horizontal plate 1104 and the locking rod 1107 to exit the inner cavity of the docking slot 8. At this point, the two ends of the connecting rod 705 are inserted into the corresponding... In the connecting slot 8, after the hexagonal post 1102 is released, the torsion spring shaft drives the toothed post 1108 to reset, and the locking rod 1107 is reinserted into the insertion hole 706 on the connecting rod 705, completing the quick locking of the measuring mechanism 7; then the digital crack measuring instrument body 701 is flipped over, and under the action of the damping hinge 702, it can be suspended at any observation angle without being held by hand; to prevent accidental contact, the personnel flip the limiting mechanism 10 out of the tool slot 12, pull the sliding rod 1002 to make the inner hexagonal collar 1003 extend and tighten the hexagonal post 1102 to achieve rotational locking; after the measurement is completed, the digital probe is removed and placed back into the inner cavity of the outer frame 501, and is pressed and fixed by the elastic rope 502, and the wire is rewound on the winding post 503 to complete the storage;

[0039] This solution, through the configuration of a flat plate 1, connecting rod 705, connecting slot 8, locking mechanism 11, and hexagonal column 1102, combined with the automatic reset function of the torsion spring shaft, achieves tool-free rapid installation and reliable locking of the digital crack measuring instrument body 701. This solves the problem of low on-site deployment efficiency caused by the non-removable structure or cumbersome fastening of traditional devices. Addressing the technical pain points of limited working space inside culverts and the tendency for shaking when holding the main unit with one hand, this solution connects the digital crack measuring instrument body 701 to the mounting plate 703 via a damping hinge 702 and fixes it to the waist, allowing it to be stably suspended in a position convenient for observation after being flipped over, effectively freeing up the space originally used for holding the main unit. The single hand allows the operator to focus on the precise control of the digital probe, improving measurement stability and operational continuity in confined and slippery environments. To further prevent accidental unlocking of the locking mechanism 11, a flip-out limiting mechanism 10 is installed in the tool slot 12, using an inner hexagonal collar 1003 to physically limit the hexagonal post 1102, completely avoiding the risk of the connecting rod 705 becoming loose due to accidental contact. At the same time, the storage mechanism 5 integrated on the side plate 4, through the synergistic action of the outer frame 501, elastic rope 502, and winding post 503, achieves orderly storage and anti-drop protection for the digital probe and its connecting wires, ensuring the integrity and convenience of the equipment during movement and use.

[0040] Example 2:

[0041] This embodiment is basically the same as the previous embodiment, except that the end of the toothed column 1108 away from the torsion spring shaft is fixedly connected to a hexagonal column 1102 through a bushing through the side wall of the corresponding baffle plate 1101.

[0042] A tool groove 12 is provided on one side of the inner wall of the structural groove 9. A limiting mechanism 10 is provided in the inner cavity of the tool groove 12. The limiting mechanism 10 includes a sleeve 1001. A sliding rod 1002 is slidably connected to the inner cavity of the sleeve 1001. An internal hexagonal collar 1003 is fixedly connected to the end of the sliding rod 1002 away from the sleeve 1001. The internal hexagonal collar 1003 is sleeved on the outer surface of the corresponding hexagonal column 1102.

[0043] The top and bottom of the sleeve 1001 are rotatably connected to the inner wall of the corresponding tool slot 12 via a torsion spring shaft.

[0044] Two short blocks 2 are fixedly connected to the outer walls of the two sides of the plate 1, and the top and bottom of the vertical rod 3 are rotatably connected to one side of the corresponding short block 2 through a rotating shaft.

[0045] One of the straps 6 has a Velcro side fixedly connected to one side, and the other strap 6 has a Velcro hook side fixedly connected to one side.

[0046] Working principle: The baffle plate 1101, fixed to the inner wall of the structural groove 9, provides a closed protection for the internal locking mechanism 11, preventing dust, moisture, or foreign objects from entering the structural groove 9 and interfering with the meshing motion of the gear column 1108 and the gear plate 1103. The hexagonal column 1102, passing through the baffle plate 1101 via a bushing, is coaxially fixed to the gear column 1108. The operator can directly rotate the hexagonal column 1102 to drive the gear column 1108 to rotate, thus providing a standardized external force input interface and facilitating precise manual control of the locking mechanism 11 for unlocking and locking. With the setting of the limiting mechanism 10, the inner hexagonal collar 1003 can slide out and be sleeved on the outer surface of the hexagonal column 1102, thereby restricting its rotational freedom. This achieves the effect of preventing the hexagonal column 1102 from turning accidentally due to accidental contact during normal operation of the equipment, which could lead to the loosening of the connecting rod 705. With the sleeve 1001 connected to the inner wall of the tool slot 12 by a torsion spring shaft, the limiting mechanism 10 can automatically fold back into the inner cavity of the tool slot 12 when not in use, and can be flipped out for operation when in use. This achieves the effect of balancing operation convenience and structural compactness, and avoiding the limiting mechanism 10 from being exposed, hooked, or damaged.

[0047] Example 3:

[0048] This embodiment is basically the same as the previous embodiment, except that the side of the mounting plate 703 away from the digital crack measuring instrument body 701 abuts against the side of the plate 1.

[0049] The inner cavity of the structural groove 9 is provided with two track rods 1105. The two ends of the track rods 1105 are fixedly connected to the inner wall of the corresponding structural groove 9. The outer surface of the track rods 1105 is fitted with a sliding sleeve 1106. One side of the sliding sleeve 1106 is fixedly connected to one side of the corresponding toothed plate 1103.

[0050] A storage mechanism 5 is provided on one side of the side panel 4. The storage mechanism 5 includes an outer frame 501. One side of the outer frame 501 is fixedly connected to one side of the corresponding side panel 4. Several elastic ropes 502 are fixedly connected to the other side of the outer frame 501 along the vertical direction of the outer frame 501. Winding posts 503 are fixedly connected to both sides of the upper surface of the outer frame 501.

[0051] Working principle: One strap 6 has a hook side with Velcro, and the other strap 6 has a hook side with Velcro. The two straps 6 are glued together to secure the waist, achieving quick, adjustable, and stable wear without the need for additional fasteners. The mounting plate 703, with its side away from the digital crack measuring instrument body 701, abuts against the plate 1. In the locked state, the mounting plate 703 is tightly against the plate 1, forming a stable support contact surface. This enhances the overall rigidity of the measuring mechanism 7, reduces cantilever vibration, and improves observation stability. The track rod 1105 and the sliding sleeve 1... With the setting of 106, the sliding sleeve 1106 slides along the track rod 1105 and drives the toothed plate 1103 to translate, so that the toothed plate 1103 always keeps engaged with the toothed column 1108, which achieves the effect of constraining the movement trajectory of the toothed plate 1103, preventing it from deviating and dislodging, and ensuring the reliable execution of the locking action. Through the setting of the storage mechanism 5, which includes an outer frame 501, an elastic rope 502 and a winding post 503, the digital probe is placed in the outer frame 501 and pressed and fixed by the elastic rope 502. The connecting wire is wound on the winding post 503, which achieves the effect of centralized, orderly and anti-drop-off storage of the digital probe and its cable.

[0052] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for measuring the width of concrete cracks in the inner wall of a culvert, comprising a flat plate (1), characterized in that, Vertical rods (3) are movably connected to both sides of the flat plate (1). A side plate (4) is fixedly connected to one side of the vertical rod (3). A strap (6) is fixedly connected to the side of the side plate (4) away from the vertical rod (3). A measuring mechanism (7) is provided on one side of the plate (1). The measuring mechanism (7) includes a digital crack measuring instrument body (701). A mounting plate (703) is rotatably connected to one side of the digital crack measuring instrument body (701) via a damping hinge (702). Two placement slots (704) are symmetrically opened on one side of the mounting plate (703), and a connecting rod (705) is rotatably connected to the inner cavity of the placement slot (704). Insertion holes (706) are respectively opened at the top and bottom of the connecting rod (705). The plate (1) has four through slots (8) on one side. The two ends of the connecting rod (705) are respectively inserted into the corresponding through slots (8). The plate (1) has two structural slots (9) on one side. The inner cavity of the structural slot (9) is provided with a locking mechanism (11). The locking mechanism (11) includes a toothed column (1108). The toothed column (1108) has toothed plates (1103) on both sides. One end of the toothed plate (1103) is fixedly connected to a horizontal crossbar. A locking rod (1107) is fixedly connected to one side of the plate (1104). The end of the locking rod (1107) away from the corresponding horizontal plate (1104) extends through the side wall of the corresponding structural groove (9) to the inner cavity of the corresponding connecting groove (8) and is inserted into the corresponding insertion hole (706). One end of the toothed column (1108) is rotatably connected to the inner wall of the corresponding structural groove (9) through a torsion spring shaft. Both toothed plates (1103) are engaged with the toothed column (1108).

2. The device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 1, characterized in that, The inner cavity of the structural groove (9) is provided with a baffle plate (1101), and the outer surface of the baffle plate (1101) is fixedly connected to the inner wall of the corresponding structural groove (9).

3. The device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 2, characterized in that, The toothed column (1108) is fixedly connected to a hexagonal column (1102) through a bushing at the end away from the torsion spring shaft and passing through the side wall of the corresponding baffle plate (1101).

4. The device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 3, characterized in that, A tool groove (12) is provided on one side of the inner wall of the structural groove (9). A limiting mechanism (10) is provided in the inner cavity of the tool groove (12). The limiting mechanism (10) includes a sleeve (1001). A sliding rod (1002) is slidably connected to the inner cavity of the sleeve (1001). An internal hexagonal collar (1003) is fixedly connected to one end of the sliding rod (1002) away from the sleeve (1001). The internal hexagonal collar (1003) is sleeved on the outer surface of the corresponding hexagonal column (1102).

5. The device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 4, characterized in that, The top and bottom of the sleeve (1001) are rotatably connected to the inner wall of the corresponding tool slot (12) via a torsion spring shaft.

6. The device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 1, characterized in that, Two short blocks (2) are fixedly connected to the outer walls of the two sides of the plate (1), and the top and bottom of the vertical rod (3) are rotatably connected to one side of the corresponding short block (2) through a rotating shaft.

7. The device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 1, characterized in that, One of the straps (6) has a hook side fixedly connected to one side, and the other strap (6) has a hook side fixedly connected to one side.

8. The device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 1, characterized in that, The side of the mounting plate (703) away from the digital crack measuring instrument body (701) abuts against the side of the plate (1).

9. A device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 1, characterized in that, The inner cavity of the structural groove (9) is provided with two track rods (1105). The two ends of the track rods (1105) are respectively fixedly connected to the inner wall of the corresponding structural groove (9). The outer surface of the track rods (1105) is fitted with a sliding sleeve (1106). One side of the sliding sleeve (1106) is fixedly connected to one side of the corresponding toothed plate (1103).

10. A device for measuring the width of concrete cracks in the inner wall of a culvert according to claim 9, characterized in that, A storage mechanism (5) is provided on one side of the side plate (4). The storage mechanism (5) includes an outer frame (501). One side of the outer frame (501) is fixedly connected to one side of the corresponding side plate (4). Several elastic ropes (502) are fixedly connected to the other side of the outer frame (501) and along the vertical direction of the outer frame (501). Winding posts (503) are fixedly connected to both sides of the upper surface of the outer frame (501).

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