Tunnel fireproof coating thickness tester

Abstract

The utility model discloses a tunnel fireproof coating thickness tester which comprises a bottom plate, a fixing block arranged on the bottom plate, a scale arranged on the fixing block, a guide pipe arranged on one side of the scale, a measuring needle arranged in the guide pipe in a penetrating mode, and a fixing seat arranged on one side of the guide pipe and fixedly connected with the fixing block. An adjusting mechanism used for driving the measuring needle to move along the guide pipe in a guiding mode is arranged on the fixing seat, a vertically-through first guide hole is formed in the fixing block, a vertically-through second guide hole is formed in the bottom plate, and the first guide hole, the second guide hole and the guide pipe are vertically communicated. A threaded adjusting hole horizontally communicated with the first guide hole is formed in the side wall of the fixing block, an adjusting screw is arranged in the threaded adjusting hole, an inserting groove is formed in the fixing block, the lower end of the ruler is partially embedded into the inserting groove to be fixed, a vertical guide sliding groove is formed in the side wall of the guide pipe, and a guide block fixedly connected with the measuring needle is arranged in the guide sliding groove. The device is convenient to carry, high in detection speed, capable of realizing nondestructive detection and high in detection precision.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel fireproof coating thickness testing equipment, and in particular to a tunnel fireproof coating thickness measuring instrument. Background Technology

[0002] With the acceleration of urbanization, tunnels, as a crucial component of urban transportation, are receiving increasing attention for their safety and stability. Fire-retardant coatings, as an important protective material, are increasingly widely used in tunnel construction. The application of fire-retardant coatings in tunnel construction is of great significance. Their excellent fire resistance, environmental friendliness, good adhesion, and ease of application make them an ideal choice for tunnel fire protection. Through the proper application of fire-retardant coatings, the overall fire resistance rating of tunnels can be effectively improved, tunnel structures can be protected, evacuation and rescue efficiency can be enhanced, and a strong guarantee can be provided for the safe and stable operation of tunnels.

[0003] Currently, after the application of fireproof coatings in tunnels is completed, it is necessary to test the thickness of the fireproof coating. This is usually done by drilling holes in the tunnel wall and measuring the thickness with a steel ruler. This process damages the applied fireproof coating, and the thickness readings are inaccurate, resulting in low testing efficiency. Alternatively, there are more intelligent tunnel fireproof coating thickness testing devices, which are more efficient, but they are expensive and inconvenient to carry. Utility Model Content

[0004] This invention provides a tunnel fireproof coating thickness measuring instrument, which solves the problems of traditional tunnel fireproof coating thickness measuring equipment causing significant damage to the completed fireproof coating, low detection accuracy, low detection efficiency, and inconvenience in carrying.

[0005] This utility model provides a tunnel fireproof coating thickness measuring instrument, including a base plate, a fixed block on the base plate, a scale on the fixed block, a guide tube on one side of the scale, a measuring needle passing through the guide tube, a fixed seat fixedly connected to the fixed block on one side of the guide tube, and an adjustment mechanism for driving the measuring needle to move along the guide tube.

[0006] In the above technical solution, the base plate is provided with a vertically penetrating first guide hole, and the fixing block is provided with a vertically penetrating second guide hole, and the first guide hole, the second guide hole, and the guide tube are vertically connected.

[0007] In the above technical solution, a threaded adjustment hole is further provided on the side wall of the fixing block, which is horizontally connected to the second guide hole, and an adjustment screw is provided in the threaded adjustment hole.

[0008] In the above technical solution, a slot is further provided on the fixing block, and the lower part of the ruler is embedded in the slot for fixation.

[0009] In the above technical solution, a vertical guide groove is further provided on the side wall of the guide tube, a guide block fixedly connected to the measuring needle is provided in the guide groove, a vertical guide adjustment hole is provided on the guide block, an adjustment screw passes through the guide adjustment hole, a spring seat is provided on the fixed block below the guide block, a tension spring is provided between the spring seat and the guide block, the lower end of the tension spring is elastically fixedly connected to the spring seat, and the upper end is elastically fixedly connected to the lower end of the adjustment screw, and the upper end of the adjustment screw is fixedly connected to the guide block through an adjustment nut.

[0010] In the above technical solution, the adjustment mechanism further includes an adjustment gear, a mounting shaft, and a handwheel. The mounting shaft is rotatably mounted on the upper end of the fixed base. The adjustment gear is coaxially mounted on one end of the mounting shaft, and the handwheel is mounted on the other end. The side wall of the measuring needle is provided with a strip-shaped external tooth along the length direction that can mesh with the adjustment gear for transmission.

[0011] As can be seen from the above technical solutions, this utility model provides a tunnel fireproof coating thickness measuring instrument.

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

[0013] 1. By attaching the bottom surface of the base plate to the side wall of the tunnel fireproof coating, the measuring needle is driven vertically through the fixed block and the base plate and inserted into the interior of the tunnel fireproof coating through the adjustment mechanism until it touches the cement wall and stops piercing. The thickness of the tunnel fireproof coating is measured by reading the distance the measuring needle moves relative to the scale. The measurement process will not damage the finished tunnel fireproof coating over a large area. The detection speed is fast, the detection accuracy is high, and the measuring instrument is small, lightweight and easy to carry.

[0014] 2. By adjusting the screw threaded connection to the threaded adjustment hole and pressing against the measuring needle, the measuring needle is firmly connected to the inner wall of the second guide hole, so that the measuring needle can maintain its relative position after displacement relative to the scale, making it convenient for the operator to accurately read the measurement results. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the implementation examples will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of a tunnel fireproof coating thickness measuring instrument proposed in this utility model;

[0017] Figure 2 This is a partial structural schematic diagram of a tunnel fireproof coating thickness measuring instrument proposed in this utility model;

[0018] Figure 3 This is a partial structural cross-sectional schematic diagram of a tunnel fireproof coating thickness measuring instrument proposed in this utility model.

[0019] In the picture:

[0020] 1-Base plate; 11-First guide hole;

[0021] 2-Fixing block; 21-Second guide hole; 22-Threaded adjustment hole; 23-Adjusting screw; 24-Slot;

[0022] 3-Scale;

[0023] 4-Guide tube; 41-Guide groove; 42-Guide block; 44-Adjusting screw; 45-Spring seat; 46-Tension spring; 47-Adjusting nut;

[0024] 5-Measuring needle; 51-External teeth;

[0025] 6-Fixed base;

[0026] 7-Adjusting mechanism; 71-Adjusting gear; 72-Mounting shaft; 73-Handwheel. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0028] Example 1:

[0029] See also Figure 1-3A tunnel fireproof coating thickness measuring instrument includes a base plate 1, which is rectangular in shape with dimensions of 10cm x 10cm x 0.5cm. A fixing block 2, 1cm thick, is fixedly mounted on the center of the base plate 1. A scale 3 is vertically mounted on the fixing block 2. Dimensional graduations are provided on both sides of the front side of the scale 3 along its length. The graduations on the scale 3 gradually increase from top to bottom for easy reading. The scale 3 is 20cm long and has a measuring range of 20cm. A guide tube 4 is vertically mounted on the fixing block 2 on the front side of the scale 3. The guide tube 4 is fixedly connected to the fixing block 2. A measuring needle 5, 20.5cm long, passes through the guide tube 4, with its upper end flush with the upper end of the scale 3. The measuring needle 5 has a pointed tip at its lower end, which is used to insert into the fireproof coating to test the thickness of the fireproof coating. A fixed seat 6 is set on one side of the guide tube 4 and fixedly connected to the fixed block 2. An adjustment mechanism 7 is set on the upper end of the fixed seat 6 to drive the measuring needle 5 to move along the guide tube 4. By attaching the bottom surface of the base plate 1 to the side wall of the tunnel fireproof coating, the measuring needle 5 is driven to vertically pass through the fixed block 2 and the base plate 1 and pierce into the interior of the tunnel fireproof coating through the adjustment mechanism 7 until it touches the cement wall and stops piercing. The thickness of the tunnel fireproof coating is measured by reading the distance that the measuring needle 5 moves relative to the scale 3. The measurement process will not damage the finished tunnel fireproof coating over a large area. The detection speed is fast, the detection accuracy is high, and the measuring instrument is small in size, light in weight, and easy to carry.

[0030] In this embodiment, see Figure 3 The base plate 1 is provided with a vertically penetrating first guide hole 11, and the fixing block 2 is provided with a vertically penetrating second guide hole 21. The first guide hole 11, the second guide hole 21, and the guide tube 4 are vertically connected. When the measuring needle 5 passes through the second guide hole 21 and the first guide hole 11 in sequence to penetrate into the tunnel fireproof coating, the moving direction of the measuring needle 5 is positioned and guided.

[0031] In this embodiment, see Figure 2 A threaded adjustment hole 22 is provided on the side wall of the fixing block 2, which is horizontally connected to the second guide hole 21. An adjustment screw 23 is provided in the threaded adjustment hole 22. When the measuring needle 5 is inserted into the tunnel fireproof coating, the threaded adjustment hole 22 is connected by the adjustment screw 23, and the measuring needle 5 is pressed against the inner wall of the second guide hole 21 to securely connect the measuring needle 5 to the inner wall of the second guide hole 21. This allows the measuring needle 5 to maintain its relative position after displacement relative to the scale 3, making it convenient to read the measurement results.

[0032] In this embodiment, see Figure 2A slot 24 is provided on the fixing block 2. The shape of the slot 24 is the same as the cross-sectional shape of the scale 3. The depth of the slot 24 is the same as the thickness of the fixing block 2. The lower part of the scale 3 is embedded in the slot 24 and fixed. The insertion depth is 1cm. After the measuring needle 5 is displaced relative to the scale 3, it can be directly converted into the thickness of the tunnel fireproof coating.

[0033] In this embodiment, see Figure 2 A vertical guide groove 41 is provided on the front side wall of the guide tube 4, and the guide groove 41 communicates with the inner cavity of the guide tube 4. A guide block 42, which is fixedly connected to the measuring needle 5, is provided in the guide groove 41. The two sides of the guide block 42 are limited and guided by the guide groove 41. A vertical guide adjustment hole is provided on the top of the guide block 42, and an adjustment screw 44 passes through the guide adjustment hole. A spring seat 45 is provided on the fixing block 2 below the guide block 42. A tension spring 46 is provided between the spring seat 45 and the guide block 42. The lower end of the spring 46 is elastically fixedly connected to the spring seat 45, and the upper end is elastically fixedly connected to the lower end of the adjusting screw 44. The upper end of the adjusting screw 44 is fixedly connected to the guide block 42 through the adjusting nut 47. The adjusting screw 44 is moved upward by the adjusting nut 47, which tightens the tension spring 46, giving the tension spring 46 an initial preload. The tension spring 46 with the initial preload drives the measuring needle 5 to pierce the tunnel fireproof coating, saving manual labor intensity, providing stable piercing force, and quickly penetrating the tunnel fireproof coating.

[0034] In this embodiment, see Figure 2 The adjustment mechanism 7 includes an adjustment gear 71, a mounting shaft 72, and a handwheel 73. The mounting shaft 72 is rotatably mounted on the upper end of the fixed base 6. The adjustment gear 71 is coaxially mounted on one end of the mounting shaft 72, and the handwheel 73 is mounted on the other end. The side wall of the measuring needle 5 is provided with a strip-shaped external tooth 51 along the length direction, which can mesh with the adjustment gear 71 for transmission. When the operator rotates the handwheel 73 counterclockwise, it drives the mounting shaft 72 to rotate. The rotation of the mounting shaft 72 drives the adjustment gear 71 to rotate counterclockwise. The rotation of the adjustment gear 71 meshes with the strip-shaped external tooth 51 on the measuring needle 5, driving the measuring needle 5 to move upward in a directional direction. The measuring needle 5 does not require manual positioning, saving time and effort.

[0035] As can be seen from the above technical solution, during use, the operator places the base plate 1 vertically, then applies pressure to the base plate 1 from one side to make it adhere and fix it to the position to be tested on the side wall of the tunnel fireproof coating. By tightening the adjusting nut 47, the adjusting screw 44 moves upward, pulling the tension spring 46 and giving the tension spring 46 an initial preload. By rotating the handwheel 73 counterclockwise, the operator drives the mounting shaft 72 to rotate. The rotation of the mounting shaft 72 drives the adjusting gear 71 to rotate counterclockwise. The rotation of the adjusting gear 71 meshes with the strip external teeth 51 on the measuring needle 5, driving the measuring needle 5 to move outward in a directional direction. Through the tension spring 46 with its initial preload, the tension spring 46... During the recovery process, the measuring needle 5 is driven to pierce the surface of the tunnel fireproof coating. The piercing stops after touching the cement wall. Then, the adjusting screw 23 is screwed into the threaded adjusting hole 22 and presses against the measuring needle 5 to firmly connect the measuring needle 5 to the inner wall of the second guide hole 21. This allows the measuring needle 5 to maintain its relative position after displacement relative to the scale 3. The thickness of the tunnel fireproof coating can be measured by reading the distance the measuring needle 5 moves relative to the scale 3. The measurement process will not damage the completed tunnel fireproof coating. The detection speed is fast, the detection accuracy is high, and the measuring instrument is small, lightweight, and easy to carry.

[0036] Other embodiments of the present invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. The present invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of the invention is indicated by the claims.

[0037] It should be understood that this utility model is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model.

Claims

1. A tunnel fireproof coating thickness measuring instrument, characterized in that: Includes a base plate (1), a fixing block (2) is provided on the base plate (1), a scale (3) is provided on the fixing block (2), a guide tube (4) is provided on one side of the scale (3), a measuring needle (5) is inserted through the guide tube (4), a fixing seat (6) is provided on one side of the guide tube (4) and fixedly connected to the fixing block (2), and an adjustment mechanism (7) is provided on the fixing seat (6) for driving the measuring needle (5) to move along the guide tube (4).

2. The tunnel fireproof coating thickness measuring instrument according to claim 1, characterized in that, The base plate (1) is provided with a vertically penetrating first guide hole (11), and the fixing block (2) is provided with a vertically penetrating second guide hole (21). The first guide hole (11), the second guide hole (21), and the guide tube (4) are vertically connected.

3. The tunnel fireproof coating thickness measuring instrument according to claim 2, characterized in that, The side wall of the fixing block (2) is provided with a threaded adjustment hole (22) that is horizontally connected to the second guide hole (21), and an adjustment screw (23) is provided in the threaded adjustment hole (22).

4. The tunnel fireproof coating thickness measuring instrument according to claim 1, characterized in that, The fixing block (2) is provided with a slot (24), and the lower part of the scale (3) is embedded in the slot (24) for fixation.

5. The tunnel fireproof coating thickness measuring instrument according to claim 1, characterized in that, A vertical guide groove (41) is provided on the side wall of the guide tube (4). A guide block (42) fixedly connected to the measuring needle (5) is provided in the guide groove (41). A vertical guide adjustment hole is provided on the guide block (42). An adjustment screw (44) passes through the guide adjustment hole. A spring seat (45) is provided on the fixed block (2) below the guide block (42). A tension spring (46) is provided between the spring seat (45) and the guide block (42). The lower end of the tension spring (46) is elastically fixedly connected to the spring seat (45), and the upper end is elastically fixedly connected to the lower end of the adjustment screw (44). The upper end of the adjustment screw (44) is fixedly connected to the guide block (42) through an adjustment nut (47).

6. The tunnel fireproof coating thickness measuring instrument according to claim 1, characterized in that, The adjustment mechanism (7) includes an adjustment gear (71), a mounting shaft (72), and a handwheel (73). The mounting shaft (72) is rotatably mounted on the upper end of the fixed base (6). The adjustment gear (71) is coaxially mounted on one end of the mounting shaft (72), and the handwheel (73) is mounted on the other end. The measuring needle (5) has a strip-shaped external tooth (51) along its length direction that can mesh with the adjustment gear (71) for transmission.

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