A structure crack width optical measuring scale for construction engineering detection

Abstract

The utility model relates to the field of engineering detection discloses a building engineering detects with structure crack width optical measuring scale, including main part, the inside slide connection of main part has reading head, the inside installation of main part has quick fixing assembly, both sides fixed mounting of main part have fixed frame, the inside installation of fixed frame has dustproof subassembly, the dustproof subassembly includes dust screen, one side fixed connection of dust screen has lock tongue, the inside of fixed frame is provided with recess, the inside slide connection of recess has two lock blocks, one side fixed connection of two lock blocks has the slide rod, the outside of slide rod is equipped with spring, in the utility model, dust screen can greatly reduce dust to enter, and the loading and unloading are realized through adjusting lever etc, and it is convenient to clean and replace to ensure the dustproof effect, and the reading head of selecting adaptation is wanted during measurement, and through T type base and T type groove quick installation, ensure the measurement accuracy simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of engineering inspection, and in particular to an optical measuring ruler for measuring the width of structural cracks in building engineering inspection. Background Technology

[0002] Structural crack width is a key indicator in building engineering inspection, directly reflecting the safety and stability of a building structure. Changes in crack width can indicate abnormal structural stress, material aging, or foundation settlement. Accurately measuring crack width provides important information for assessing the load-bearing capacity, service life, and repair and reinforcement plans of a building structure, and is a crucial step in ensuring the safe operation of a building.

[0003] Most existing optical rulers for measuring structural crack width are grating rulers. Their structure mainly includes a grating main scale, an indicating grating, a light source, an optical system, and a reading device. The grating main scale and the indicating grating form moiré fringes. The fringe signal is transmitted to the reading device through the optical system, enabling high-precision measurement of crack width. This method is widely used in structural inspection in building engineering.

[0004] However, in the complex environment of construction sites, dust and other pollutants can easily enter the optical system of existing optical measuring rulers, interfering with the formation and recognition of moiré fringes and leading to a decrease in measurement accuracy. To address this issue, an optical measuring ruler for structural crack width in construction engineering is proposed. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an optical measuring ruler for structural crack width in building engineering inspection, which aims to improve the problem in the prior art where external dust can easily enter the interior, thus affecting the measurement accuracy.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An optical measuring ruler for structural crack width in building engineering inspection includes a main body, a reading head slidably connected inside the main body, a quick-fixing component installed inside the main body, and fixing frames fixedly installed on both sides of the main body, with dustproof components installed inside the fixing frames.

[0008] The dustproof component includes a dustproof net, which is slidably connected inside the fixed frame. A locking tongue is fixedly connected to one side of the dustproof net. A groove is provided inside the fixed frame, and two locking blocks are slidably connected inside the groove. The locking tongue and the locking blocks are engaged with each other. A sliding rod is fixedly connected to one side of each of the two locking blocks, and a spring is sleeved on the outside of the sliding rod.

[0009] As a further description of the above technical solution:

[0010] The quick-fixing assembly includes a fixing groove and a T-slot. A T-shaped base is slidably connected inside the T-slot. The T-shaped base is fixedly connected to the bottom of the reading head. A screw is threaded inside the reading head. A nut is fixedly connected to one end of the screw. The screw is slidably connected inside the fixing groove.

[0011] As a further description of the above technical solution:

[0012] A handle is rotatably connected to one side of the dustproof net, and the handle is rotatably connected to one side of the dustproof net via a hinge;

[0013] As a further description of the above technical solution:

[0014] An adjusting rod is fixedly connected to the outside of the locking block, and a moving groove is provided on the outside of the fixed frame. The adjusting rod is slidably connected inside the moving groove.

[0015] As a further description of the above technical solution:

[0016] One end of the sliding rod is slidably connected to a fixed circular block, the fixed circular block is fixedly connected inside the groove, and one end of the spring is fixedly connected to one side of the fixed circular block;

[0017] As a further description of the above technical solution:

[0018] A flexible pad is fixedly connected to the outside of the main body, and the flexible pad is located below the reading head;

[0019] As a further description of the above technical solution:

[0020] An anti-slip pad is fixedly connected to the bottom of the nut, and the anti-slip pad is located on the outside of the main body;

[0021] As a further description of the above technical solution:

[0022] The fixed frame has a sliding groove inside, and the dustproof net is slidably connected inside the sliding groove.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the dustproof net can significantly reduce the amount of dust entering the main body. By using an adjusting rod, locking block and spring, the dustproof net can be installed and disassembled, ensuring that the installation is firm and the disassembly is quick. After the dustproof net is disassembled, it can be cleaned or replaced to ensure that the dustproof net continues to play a good dustproof role.

[0025] 2. In this utility model, when making measurements, select a suitable reading head and install it quickly by matching the T-shaped base and T-slot. Selecting the appropriate reading head for different cracks can make the measurement more targeted and ensure the reliability of the data from the source. During the measurement process, after adjustment, be sure to tighten the nut to firmly fix the T-shaped base and prevent it from sliding accidentally during the measurement process, ensuring that every reading is accurate and reliable. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of an optical measuring ruler for structural crack width in building engineering inspection proposed in this utility model;

[0027] Figure 2 This is a schematic diagram of the T-slot of an optical measuring ruler for structural crack width in building engineering inspection, as proposed in this utility model.

[0028] Figure 3 An exploded view of the dustproof netting for an optical measuring ruler for structural crack width in building engineering inspection, as proposed in this utility model.

[0029] Figure 4 This is a cross-sectional view of the spring in an optical measuring ruler for structural crack width in building engineering inspection, as proposed in this utility model.

[0030] Figure 5 An exploded view of the screw of an optical measuring ruler for structural crack width in building engineering inspection proposed in this utility model;

[0031] Figure 6 This is a schematic diagram of the flexible pad for an optical measuring ruler for structural crack width in building engineering testing, as proposed in this utility model.

[0032] Legend:

[0033] 1. Main body; 2. Fixing groove; 3. Reading head; 4. Nut; 5. Anti-slip pad; 6. Screw; 7. T-shaped base; 8. T-shaped groove; 9. Flexible pad; 10. Fixing frame; 11. Dustproof net; 12. Handle; 13. Hinge; 14. Locking tongue; 15. Slide groove; 16. Moving groove; 17. Adjusting rod; 18. Groove; 19. Locking block; 20. Spring; 21. Sliding rod; 22. Fixing round block. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] Reference Figure 1 , Figure 3 and Figure 4 This utility model provides an embodiment of an optical measuring ruler for structural crack width in building engineering inspection, comprising a main body 1. The main body of the ruler includes a scale grating with grating stripes, a light source to provide detection light, a photoelectric element to convert light signals into electrical signals, a signal processing circuit to amplify and subdivide signals, a guide rail to ensure smooth movement, a sealed structure to prevent dust intrusion, and an interface to output measurement data, etc., which are existing technologies and will not be described in detail hereafter. A reading head 3 is slidably connected inside the main body 1. The reading head 3 is a key component for realizing optical measurement of crack width, which can accurately capture crack images and read data. A quick fixing component is installed inside the main body 1. This component can quickly and stably install and position the reading head 3, greatly improving the preparation efficiency before measurement. Fixing frames 10 are fixedly installed on both sides of the main body 1. The fixing frames 10 provide installation space and fixing structure for the dustproof component. The dustproof component is installed inside the fixing frames 10. The dustproof component can effectively block dust from the construction site and other environments from entering the interior of the main body 1, avoiding dust from affecting the accuracy of the measuring ruler.

[0036] The dustproof assembly includes a dustproof net 11, which efficiently filters dust particles from the air. The dustproof net 11 is slidably connected inside the fixed frame 10, facilitating its disassembly, cleaning, and replacement. A locking tongue 14 is fixedly connected to one side of the dustproof net 11, providing a crucial locking structure for its fixation. A groove 18 is provided inside the fixed frame 10, providing installation and movement space for components such as locking blocks 19. Two locking blocks 19 are slidably connected inside the groove 18, symmetrically distributed, and can lock the locking tongue 14 from both sides. The locking tongue 14 and locking blocks 19 interlock, firmly fixing the dustproof net 11 within the fixed frame 10 and preventing it from loosening or slipping during measurement. A sliding rod 21 is fixedly connected to one side of each locking block 19, providing guidance for the movement of the locking blocks 19 and ensuring smooth sliding within the groove 18. A spring 20 is sleeved on the outer side of the sliding rod 21, which provides a restoring force for the locking block 19. An adjusting rod 17 is fixedly connected to the outer side of the locking block 19, extending to the outside of the fixed frame 10, providing a convenient operating component for the operator. By moving the adjusting rod 17, the locking block 19 can be slid within the groove 18. A moving groove 16 is provided on the outer side of the fixed frame 10, and the adjusting rod 17 is slidably connected inside the moving groove 16. A fixed round block 22 is slidably connected to one end of the sliding rod 21, which guides and limits the movement of the sliding rod 21. The fixed round block 22 is fixedly connected inside the groove 18, and one end of the spring 20 is fixedly connected to one side of the fixed round block 22. A sliding groove 15 is provided inside the fixed frame 10, the size of which matches the edge of the dustproof net 11, providing precise guidance for the sliding of the dustproof net 11. The dustproof net 11 is slidably connected inside the sliding groove 15.

[0037] Reference Figure 1 , Figure 2 and Figure 5The quick-fixing assembly includes a fixing groove 2 and a T-slot 8. The fixing groove 2 is opened along the length of the main body 1, providing a path for the sliding of the screw 6 and also limiting the range of movement of the screw 6. A T-shaped base 7 is slidably connected inside the T-slot 8. The shapes of the T-slot 8 and the T-shaped base 7 match each other, preventing vertical or horizontal offset and ensuring the stability of the reading head 3's movement. The T-shaped base 7 is fixedly connected to the bottom of the reading head 3, realizing a sliding connection between the reading head 3 and the main body 1, allowing the reading head 3 to move flexibly on the main body 1. The internal threaded connection includes a screw 6, one end of which is fixedly connected to a nut 4. The screw 6 is slidably connected inside the fixing groove 2. When the reading head 3 moves, the screw 6 will slide synchronously within the fixing groove 2. When the reading head 3 is adjusted to the appropriate position, the nut 4 is tightened, and the screw 6 will press down on the main body 1, thereby fixing the reading head 3 in the current position and preventing it from moving during the measurement process. An anti-slip pad 5 is fixedly connected to the bottom of the nut 4. The anti-slip pad 5 is made of rubber or other anti-slip materials, which can increase the friction between the nut 4 and the main body 1. The anti-slip pad 5 is located on the outside of the main body 1.

[0038] Reference Figure 1 , Figure 2 , Figure 4 and Figure 6 A handle 12 is rotatably connected to one side of the dustproof net 11. The handle 12 provides a convenient gripping structure for operators to disassemble and install the dustproof net 11. By pulling the handle 12, the dustproof net 11 can be easily pulled out or pushed in from the fixed frame 10. The handle 12 is rotatably connected to one side of the dustproof net 11 via a hinge 13. The hinge 13 allows the handle 12 to rotate flexibly. When the handle 12 is not in use, it can be flipped to a horizontal position and pressed against the surface of the dustproof net 11. This reduces the storage space of the measuring ruler and prevents the handle 12 from obstructing the operator's view or operation during measurement. A flexible pad 9 is fixedly connected to the outside of the main body 1. The flexible pad 9 is made of rubber or other materials with a certain degree of elasticity and softness. It can keep the measuring ruler in a horizontal position on uneven walls and improve the measurement accuracy. The flexible pad 9 is located below the reading head 3.

[0039] Working principle: First, when taking measurements, a suitable reading head 3 needs to be selected. The T-shaped base 7 at the bottom of the reading head 3 is pushed into the T-shaped groove 8 on the side to achieve quick installation. After installation, the fixing frame 10 is installed. For different cracks, a suitable reading head 3 should be selected. In addition, during the measurement process, after adjustment, the nut 4 needs to be tightened to prevent the T-shaped base 7 from sliding accidentally and avoid the problem of reduced accuracy.

[0040] Secondly, construction sites are often dusty, and the dustproof net 11 can effectively prevent dust from entering the interior of the main body 1. After long-term operation, a large amount of dust will accumulate on the surface of the dustproof net 11. At this time, slide the adjusting rod 17 to both sides to move the locking block 19 to both sides. The spring 20 will be compressed under force, allowing the locking tongue 14 to disengage from the locking block 19. Then, the dustproof net 11 can be pulled out through the handle 12 to clean and replace it, ensuring that it continues to work normally. In addition, the handle 12 can be flipped to a horizontal position when not in use, which can reduce the storage space and prevent it from obstructing the measurement.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An optical measuring ruler for structural crack width in building engineering inspection, comprising a main body (1), characterized in that: The main body (1) is slidably connected to a reading head (3), a quick-fixing component is installed inside the main body (1), and a fixing frame (10) is fixedly installed on both sides of the main body (1). A dustproof component is installed inside the fixing frame (10). The dustproof assembly includes a dustproof net (11), which is slidably connected inside the fixed frame (10). A locking tongue (14) is fixedly connected to one side of the dustproof net (11). A groove (18) is provided inside the fixed frame (10). Two locking blocks (19) are slidably connected inside the groove (18). The locking tongue (14) and the locking blocks (19) are engaged with each other. A sliding rod (21) is fixedly connected to one side of each of the two locking blocks (19). A spring (20) is sleeved on the outside of the sliding rod (21).

2. The optical measuring ruler for structural crack width in building engineering inspection according to claim 1, characterized in that: The quick-fixing assembly includes a fixing groove (2) and a T-slot (8). A T-shaped base (7) is slidably connected inside the T-slot (8). The T-shaped base (7) is fixedly connected to the bottom of the reading head (3). A screw (6) is threadedly connected inside the reading head (3). A nut (4) is fixedly connected to one end of the screw (6). The screw (6) is slidably connected inside the fixing groove (2).

3. The optical measuring ruler for structural crack width in building engineering inspection according to claim 1, characterized in that: A handle (12) is rotatably connected to one side of the dustproof net (11), and the handle (12) is rotatably connected to one side of the dustproof net (11) via a hinge (13).

4. The optical measuring ruler for structural crack width in building engineering inspection according to claim 1, characterized in that: An adjusting rod (17) is fixedly connected to the outside of the locking block (19), and a moving groove (16) is provided on the outside of the fixed frame (10). The adjusting rod (17) is slidably connected inside the moving groove (16).

5. The optical measuring ruler for structural crack width in building engineering inspection according to claim 1, characterized in that: One end of the sliding rod (21) is slidably connected to a fixed circular block (22), the fixed circular block (22) is fixedly connected inside the groove (18), and one end of the spring (20) is fixedly connected to one side of the fixed circular block (22).

6. The optical measuring ruler for structural crack width in building engineering inspection according to claim 1, characterized in that: A flexible pad (9) is fixedly connected to the outside of the main body (1), and the flexible pad (9) is located below the reading head (3).

7. The optical measuring ruler for structural crack width in building engineering inspection according to claim 2, characterized in that: The bottom of the nut (4) is fixedly connected to an anti-slip pad (5), which is located on the outside of the main body (1).

8. The optical measuring ruler for structural crack width in building engineering inspection according to claim 1, characterized in that: The fixed frame (10) has a groove (15) inside, and the dustproof net (11) is slidably connected inside the groove (15).

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