Tunnel side wall flatness detection device

Abstract

The utility model relates to the technical field of flatness detection, and discloses a tunnel side wall flatness detection device, which comprises a parallel plate, the outer surface of the parallel plate is provided with a detection mechanism, the back surface of the parallel plate is fixedly connected with a lug block, the interior of the lug block is slidably connected with an extension rod, one end of the extension rod is fixedly connected with a side wall sliding mechanism, and the other end of the extension rod is fixedly connected with a side wall sliding mechanism. A plurality of screw holes are formed in the outer surface of the extension rod, and the outer surfaces of the lug blocks are in threaded connection with locking rotary knobs. An operator holds the handle to push the device to move, so that the steel ball is attached to the side wall, if the side wall is flat, the displacement amount detected by the displacement sensor is normal, and the alarm lamp is not turned on, and if the side wall is concave-convex, the steel ball drives the measuring rod to stretch out and draw back, and the displacement sensor detects abnormal displacement change, and the alarm lamp is turned on. The flatness of the side wall of the tunnel is rapidly judged in a visual alarm mode, and the detection work efficiency and convenience are improved.

Description

Technical Field

[0001] This utility model relates to the field of flatness detection technology, specifically a device for detecting the flatness of tunnel sidewalls. Background Technology

[0002] Smoothness inspection of tunnel sidewalls is a crucial step in tunnel construction and operation. On one hand, smoothness directly affects the safety and durability of the tunnel lining structure; localized unevenness or cracks can lead to stress concentration, accelerate concrete deterioration, and even threaten the overall stability of the tunnel. On the other hand, substandard smoothness can hinder subsequent processes such as waterproofing layer installation and electromechanical equipment installation, increasing construction costs and time. Therefore, smoothness inspection technology is of great significance for ensuring the quality of tunnel engineering and long-term safe operation.

[0003] Currently, traditional methods for inspecting the smoothness of tunnel sidewalls mainly rely on manual measurement using a straightedge. During the measurement process, the straightedge is placed against the tunnel sidewall, and the presence of gaps between the straightedge and the sidewall is visually observed. Gaps indicate that the sidewall is not smooth enough, while the absence of gaps indicates smoothness. However, this method is overly dependent on the operator's experience, resulting in low inspection efficiency. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model provides a tunnel sidewall flatness detection device, which has the advantages of high detection efficiency and accurate detection, and solves the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tunnel sidewall flatness detection device, comprising a parallel plate, a detection mechanism installed on the outer surface of the parallel plate, and an ear block fixedly connected to the back of the parallel plate, an extension rod slidably connected inside the ear block, a sidewall sliding mechanism fixedly connected to one end of the extension rod, multiple screw holes opened on the outer surface of the extension rod, and a locking knob threadedly connected to the outer surface of the ear block;

[0006] The detection mechanism includes a displacement sensor, an alarm light is installed on the housing of the displacement sensor, a measuring rod is connected to one side of the displacement sensor, a spring is sleeved on the outer surface of the measuring rod, a hemispherical sleeve is fixedly connected to one end of the measuring rod, a ball ring is connected to the end face of the hemispherical sleeve by a screw, and a steel ball is rolled between the hemispherical sleeve and the ball ring.

[0007] The sidewall sliding mechanism includes a groove plate, and a connecting plate is bolted to the inner side of the groove plate. Pullers are rotatably connected to both ends of the connecting plate.

[0008] Preferably, two sets of parallel plates are provided, and four lugs are fixedly connected to the back of the parallel plates. Multiple screw holes are equally spaced on the outer surface of the extension rod, and the screw holes are threadedly engaged with the locking knob.

[0009] Preferably, the sidewall sliding mechanism is provided in three sets, wherein a C-shaped plate is fixedly connected to the outer surface of the groove plate of the bottom set of sidewall sliding structures, and a moving wheel is rotatably connected inside the C-shaped plate.

[0010] Preferably, the sidewall sliding mechanism is provided with two connecting plates, and two pulleys are rotatably connected between the two connecting plates.

[0011] Preferably, the displacement sensor is fixedly connected to the outer surface of the parallel plate, one end of the spring abuts against the hemispherical sleeve, and the other end of the spring abuts against the parallel plate.

[0012] Preferably, two handles are fixedly connected to the outer surface of the parallel plate.

[0013] Compared with the prior art, this utility model provides a tunnel sidewall flatness detection device, which has the following beneficial effects:

[0014] This invention utilizes three sets of sidewall sliding mechanisms with pulleys that conform to the tunnel sidewall, providing support and guidance for the device's movement. Bottom-end moving wheels, in conjunction with the pulleys, enhance movement flexibility and reduce resistance. The operator grips the handle and pushes the device to move the steel balls against the sidewall. If the sidewall is flat, the displacement sensor detects normal displacement, and the alarm light remains off. If the sidewall is uneven, the steel balls cause the measuring rod to extend or retract, the displacement sensor detects abnormal displacement changes, and the alarm light illuminates. This intuitive alarm method allows for quick assessment of the tunnel sidewall's flatness, improving the efficiency and convenience of the inspection process. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of the structure of this utility model from a first-view perspective;

[0016] Figure 2 This is a three-dimensional schematic diagram of the structure of this utility model from a second perspective;

[0017] Figure 3 This is an exploded view of the detection mechanism in the structure of this utility model.

[0018] The components are as follows: 1. Parallel plate; 2. Detection mechanism; 21. Displacement sensor; 22. Alarm light; 23. Measuring rod; 24. Spring; 25. Hemispherical sleeve; 26. Ball ring; 27. Steel ball; 3. Ear block; 4. Extension rod; 5. Side wall sliding mechanism; 51. Groove plate; 52. Connecting plate; 53. Pulley; 6. Screw hole; 7. Locking knob; 8. C-shaped plate; 9. Moving wheel; 10. Handle. Detailed Implementation

[0019] 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.

[0020] Please see Figures 1-3 A tunnel sidewall flatness detection device includes a parallel plate 1, a detection mechanism 2 installed on the outer surface of the parallel plate 1, and an ear block 3 fixedly connected to the back of the parallel plate 1. An extension rod 4 is slidably connected inside the ear block 3. A sidewall sliding mechanism 5 is fixedly connected to one end of the extension rod 4. Multiple screw holes 6 are opened on the outer surface of the extension rod 4, and a locking knob 7 is threadedly connected to the outer surface of the ear block 3.

[0021] The detection mechanism 2 includes a displacement sensor 21, an alarm light 22 is installed on the housing of the displacement sensor 21, and a measuring rod 23 is connected to one side of the displacement sensor 21. A spring 24 is sleeved on the outer surface of the measuring rod 23, and a hemispherical sleeve 25 is fixedly connected to one end of the measuring rod 23. A ball ring 26 is connected to the end face of the hemispherical sleeve 25 by screws, and a steel ball 27 is rolled between the hemispherical sleeve 25 and the ball ring 26.

[0022] The sidewall sliding mechanism 5 includes a groove plate 51, and a connecting plate 52 is bolted to the inner side of the groove plate 51. Pulleys 53 are rotatably connected to both ends of the connecting plate 52.

[0023] Specifically, there are two sets of parallel plates 1, and four lugs 3 are fixedly connected to the back of the parallel plates 1. Multiple screw holes 6 are equally spaced on the outer surface of the extension rod 4, and the screw holes 6 are threadedly engaged with the locking knob 7.

[0024] Specifically, the side wall sliding mechanism 5 is provided in three sets. The outer surface of the groove plate 51 of the bottom set of the side wall sliding mechanism 5 is fixedly connected to a C-shaped plate 8, and the inside of the C-shaped plate 8 is rotatably connected to a moving wheel 9.

[0025] The advantage is that by loosening the locking knob 7, it can be removed from the ear block 3, allowing the extension rod 4 to slide within the ear block 3. This adjusts the distance between the sidewall sliding mechanism 5 and the parallel plate 1. By reinserting the locking knob 7 into the through hole of the ear block 3 and connecting it to a selected screw hole 6, the position of the extension rod 4 can be fixed. This allows the distance between the three sets of sidewall sliding mechanisms 5 and the two parallel plates 1 to be adjusted, thus allowing the height of the entire detection device to be adjusted according to the height of the tunnel sidewall to be inspected.

[0026] Specifically, the sidewall sliding mechanism 5 is provided with two connecting plates 52, and two pulleys 53 are rotatably connected between the two connecting plates 52.

[0027] The advantage is that by attaching the pulley 53 of the sidewall sliding mechanism 5 to the sidewall, the steel ball 27 is also attached to the sidewall. By pushing the entire device, the steel ball 27 is made to adhere to the tunnel sidewall. As the device moves, if the sidewall is flat, the steel ball 27 moves smoothly, the measuring rod 23 is relatively stable, the displacement detected by the displacement sensor 21 is within the normal range, and the alarm light 22 does not light up. If there are unevenness in the sidewall, the steel ball 27 will move due to the unevenness, causing the measuring rod 23 to extend and retract under the action of the spring 24. The displacement sensor 21 detects the displacement change that exceeds the set range, triggering the alarm light 22 to light up, thereby judging the flatness of the tunnel sidewall.

[0028] Specifically, the displacement sensor 21 is fixedly connected to the outer surface of the parallel plate 1, one end of the spring 24 abuts against the hemispherical sleeve 25, and the other end of the spring 24 abuts against the parallel plate 1.

[0029] Specifically, two handles 10 are fixedly connected to the outer surface of the parallel plate 1.

[0030] The advantages are that, in the three sets of sidewall sliding mechanisms 5, the pulleys 53 of each mechanism can fit against the tunnel sidewall, providing support and guidance for the entire device to move along the sidewall, making the inspection process more stable and smooth; the moving wheels 9 on the bottom sidewall sliding mechanism 5 can contact the ground, and together with the pulleys 53, further enhance the flexibility of the device to move along the sidewall and reduce the resistance to movement. In addition, the distance between the sidewall sliding mechanism 5 and the parallel plate 1 can be adjusted by the extension rod 4 to adapt to tunnel sidewalls of different heights, and the two handles 10 on the outer surface of the parallel plate 1 make it convenient for operators to hold and push the device along the tunnel sidewall, reducing the burden of operation, making the inspection work more efficient and convenient, and improving the overall experience of the inspection operation.

[0031] In use, first, according to the height of the tunnel sidewall to be inspected, loosen the locking knob 7 to remove it from the lug 3, pull the extension rod 4 to slide it inside the lug 3 to adjust the distance between the sidewall sliding mechanism 5 and the parallel plate 1, then reinsert the locking knob 7 into the through hole of the lug 3 and select a screw hole 6 to connect and fix the position of the extension rod 4; then, place the pulley 53 of the sidewall sliding mechanism 5 against the sidewall, at which point the steel ball 27 also adheres to the sidewall; next, the operator holds the two sides of the outer surface of the parallel plate 1. A handle 10 is used to push the entire device, causing the steel ball 27 to move against the tunnel sidewall. If the sidewall is flat, the steel ball 27 moves smoothly, the measuring rod 23 is relatively stable, the displacement sensor 21 detects the displacement within the normal range, and the alarm light 22 does not illuminate. If the sidewall has unevenness, the steel ball 27 will move due to the unevenness, causing the measuring rod 23 to extend and retract under the action of the spring 24. The displacement sensor 21 detects the displacement change exceeding the set range, triggering the alarm light 22 to illuminate, thereby judging the flatness of the tunnel sidewall.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tunnel sidewall flatness detection device, comprising a parallel plate (1), characterized in that: The outer surface of the parallel plate (1) is equipped with a detection mechanism (2), and the back of the parallel plate (1) is fixedly connected with an ear block (3). An extension rod (4) is slidably connected inside the ear block (3). One end of the extension rod (4) is fixedly connected with a side wall sliding mechanism (5). Multiple screw holes (6) are opened on the outer surface of the extension rod (4). A locking knob (7) is threadedly connected to the outer surface of the ear block (3). The detection mechanism (2) includes a displacement sensor (21), an alarm light (22) is installed on the outer shell of the displacement sensor (21), and a measuring rod (23) is connected to one side of the displacement sensor (21). A spring (24) is sleeved on the outer surface of the measuring rod (23), and a hemispherical sleeve (25) is fixedly connected to one end of the measuring rod (23). A ball ring (26) is connected to the end face of the hemispherical sleeve (25) by screws. A steel ball (27) is rolled between the hemispherical sleeve (25) and the ball ring (26). The sidewall sliding mechanism (5) includes a groove plate (51), and a connecting plate (52) is bolted to the inner side of the groove plate (51). Pulleys (53) are rotatably connected to both ends of the connecting plate (52).

2. The tunnel sidewall flatness detection device according to claim 1, characterized in that: The parallel plate (1) is provided in two sets, and four ear blocks (3) are fixedly connected to the back of the parallel plate (1). The outer surface of the extension rod (4) is provided with multiple screw holes (6) at equal intervals. The screw holes (6) are threadedly engaged with the locking knob (7).

3. The tunnel sidewall flatness detection device according to claim 1, characterized in that: The sidewall sliding mechanism (5) is provided in three sets. The outer surface of the groove plate (51) of the sidewall sliding mechanism (5) located at the bottom is fixedly connected to a C-shaped plate (8), and the C-shaped plate (8) is rotatably connected to a moving wheel (9).

4. The tunnel sidewall flatness detection device according to claim 1, characterized in that: The sidewall sliding mechanism (5) is provided with two connecting plates (52), and two pulleys (53) are rotatably connected between the two connecting plates (52).

5. The tunnel sidewall flatness detection device according to claim 1, characterized in that: The displacement sensor (21) is fixedly connected to the outer surface of the parallel plate (1), one end of the spring (24) abuts against the hemispherical sleeve (25), and the other end of the spring (24) abuts against the parallel plate (1).

6. The tunnel sidewall flatness detection device according to claim 1, characterized in that: Two handles (10) are fixedly connected to the outer surface of the parallel plate (1).

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